US2846206A

US2846206A - Railway roadbed scarifying apparatus

Info

Publication number: US2846206A
Application number: US552177A
Authority: US
Inventors: Kershaw Royce
Original assignee: Kershaw Manufacturing Co Inc
Current assignee: Kershaw Manufacturing Co Inc
Priority date: 1955-12-09
Filing date: 1955-12-09
Publication date: 1958-08-05
Anticipated expiration: 1975-08-05

Description

R. KERSHAW RAILWAY ROADBED SCARIFYING APPARATUS Aug. 5, 1958 3 Sheets-Sheet 1 Filed Dec. 9, 1955 INVENTORQI ROYCE KERSHAW M 6m mum 58 R. KERSHAW 2,846,206

RAILWAY ROADBED SCARIFYING APPARATUS 'Filed Dec. 9, 1955 Y 3 Sheets-Sheet 2 INVENTOR; Rovcs KEILsHAW M AfTTOIQLNEyS operation requiring considerable time.

United States Patent i RAILWAY ROADBED SCARIFYING APPARATUS Royce Kershaw, Montgomery, Ala., assignor to Kershaw Manufacturing Company, Incorporated, a corporation of Alabama Application December 9, 1955, Serial No. 552,177

4 Claims. (Cl. 262-8) This invention relates to apparatus for scarifying or loosening the roadbed of a railroad track, particularly when removing and replacing cross ties and has for an object the provision of apparatus of the character designated which shall be simple of design, economical of manufacture and reliable in operation.

A more specific object of my invention is to provide scarifying apparatus which shall include tools for loosening the roadbed which reciprocate between the cross ties and which may be raised clear of the track and the apparatus advanced under its own power from location to location and the tools lowered to working position as the work proceeds. v

A further object of my invention is the provision of self propelled railway roadbed scarifying apparatus including tools which are adapted to reciprocate between cross ties and which shall include improved means for raising and lowering the tools and for controlling movement of the apparatus along the railway track.

As is well known in the art to which my invention relates the earth and ballast underneath railway cross ties becomes packed down hard due to the impact of passing loads, and to tamping of the earth and ballast under the ties when leveling and lining up the track. Also, as cross ties become worn the rails sink down into the ties and tamping the ballast under the ties to level the track creates a hard compact ridge under each tie which must be removed and before a new cross tie can be put in place. To remove this ridge and loosen the road bed with manual labor is a laborious, expensive It is accordingly the prime object of my invention to provide apparatus which shall be effective to loosen a railway road bed efficiently and in a minimum of time.

Briefly my invention embodies a railway vehicle and pivotally mounted on one end of the vehicle and extending forwardly to overhang the opposite end is a frame which includes transverse guide members in its forward overhanging end. Mounted in the guide members to reciprocate from the middle of track outwardly and from the outside of the rails outwardly are scarifying tools which are adapted to enter and loosen the roadbed as they are reciprocated. A prime mover is mount ed on the vehicle and is employed to develop hydraulic pressure which is employed, through suitable hydraulic devices, to propel the vehicle, raise and lower the frame with its scarifying tools, and to reciprocate the tools.

Apparatus embodying features of my invention is illustrated in the accompanying drawings forming a part of this application in which:

Fig. 1 is a side elevational view;

Fig. 2 is an end elevation showing the railway rails in section;

Fig. 3 is a detail sectional view taken along the line III-III of Fig. 1;

Fig. 4 is a detail sectional view taken along the line IVIV of Fig. 2;

Patented Aug. 5, 1958 Fig. 5 is a detail sectional view taken along the line VV of Fig. 2;

Fig. 6 is a detail sectional view taken along the line VI-VI of Fig. 5; and,

Fig. 7 is a piping diagram of the hydraulic system.

Referring to the drawings for a better understanding of my invention and particularly to Figs. 1 and 2 I show a vehicle frame 10 having supporting pairs of wheels 11 and 12 which are adapted to run on rails 13 supported in the usual way by cross ties 14. Mounted on the vehicle frame 10 is an internal combustion engine 16 which includes means for developing hydraulic pressure (not shown) such units being well known in the art and requiring no detailed description. At 17 is shown a reservoir for the hydraulic fluid which is employed to operate the various hydraulic devices hereinafter described.

Pivotally mounted at 18 to the rear of the vehicle frame 10 is a second frame embodying

longitudinal members

19 and 21 which extend forwardly over the main frame and overhang the forward end thereof as shown in Fig. 1. Mounted on the forward end of each of the

frame members

19 and 21 are depending

members

22 and 23 which hang down in front of the vehicle frame 10. Extending transversely of the vehicle frame 10 and supported by the depending

members

22 and 23 is a tool carriage frame embodying guideways 20 formed, as shown, by structural members indicated generally by the

numerals

24 and 26. Mounted to reciprocate in the guideways 20 are

tool carrying members

27 and 28. Each of the

tool carrying members

27 and 28 is comprised of

longitudinal channels

29 and 31 joined at top and bottom by

plates

32 and 33. Each of the members is provided with a pair of axles 34 on which are mounted rollers 36 which are adapted to travel in the guideways 20. Mounted on the underside of each of the tool carrying members and extending downwardly therefrom are

tool holders

37 and 38. The tool holder 37, as shown in Fig. 2 of the drawing, is so disposed, when the tool carrying member is at its inward position, to extend downwardly into the roadbed just outside the rails while the tool holder 38, when the tool carrying member is at its inner position, extends downwardly into the roadbed adjacent the center of the roadbed. It will thus be seen that if the

tool carrying member

27 or 28 be forced outwardly, from the position shown in Fig. 2 of the drawing, the roadbed will be loosened, or scarified, from the center outwardly to the rail.

Removable bits

39 and 41 are attached to the

tool holders

37 and 38 as shown in the drawing.

Mounted on the

guideway members

24 and 26, centrally thereof is a bracket 42 to which are pivotally connected two

hydraulic cylinders

43 and 44 which extend outwardly therefrom toward the sides of the track. Mounted on the upper plate 32 of each of the

tool carrying members

27 and 28 is a bracket 46. The

pistons

47 and 48 of the

hydraulic cylinders

43 and 44 respectively are connected to the brackets 46. Fluid for operating the pistons is intro duced selectively into the ends of cylinders as shown at 49 and 51 in Fig. 3 of the drawing. It will thus be seen that as fluid is admitted alternately to the opposite ends of the

cylinders

43 and 44, the tool carrying-members will be reciprocated and the

scarifying tools

39 and 41 will be moved back and forth through the roadbed, indicated at 52 in Fig. 3 of the drawing. Mounted on the guide way

members

24 and 26 and extending upwardly therefrom are

vertical members

53 and 54 which are braced by

diagonal members

56 and 57, whach latter are joined at their upper ends respectively to the

vertical members

53 and 54 and which are joined at their lower ends to the forward side of theguideway member 20. Mounted on the upper ends of the

vertical members

53 and 54 are brackets 58 and '59 to which are connected hydraulic cylinders59a and 61. See Fig. 7. Mounted on the vehicle frame 10 underneath each of the hydraulic cylinders 59a and 61 is abracket 62, only one of which being shown in the drawing. The piston 63 of each of the cylinders 59a and 61 is connected to-the bracket 62 whereby when hydraulic fluid under pressure is admitted to the upper ends of the cylinders, the

frame members

19 and 21 together with the guideways,

tool carrying members

27 and 28 and tools, are raised clear of the roadbed and ties. When fluid is admitted to the lower ends of the cylinders the

frame members

19 and 21 are lowered to gether with the

tool carrying members

27 and 28 forcing the

tools

39 and 41 down into the roadbed.

In order to counteract the lateral forces created by the

hydraulic cylinders

43 and 44 in the operation of the scarifying tools, I provide arms 66 and 67 which are pivotally mounted on the front guideway members 20 by means of a clevis 68 and pin 69. See Figs. and 6. The arms extend forwardly and rest on the rails when the machine is in operation, ashown in Figs. 5 and 6 and are provided with downwardly extending portions 70 and. 71 which bear against the inside of the rail. The arms 66 and 67 thus serve to hold the vehicle on the track when the apparatus is in operation.

The hydraulic system employed in the operation of my improved apparatus is best illustrated diagrammatically in Fig. 7 of the drawing. The prime mover 16 Withdrawshydraulic fluid from the supply tank 17 by means of a hydraulic pump 72 from whence it passes through a conduit 73 to operating valves 74, 76, 77 and 78. The valves 74 and 76 may be operated by

foot pedals

79 and 81 and the valves 77 and 78 by hand levers 82 and 83. See Fig. 2. The valve 74 controls the flow of hydraulic fluid to a hydraulic motor 84 which drives a shaft 86 having a sprocket 87 mounted thereon which latter drives a gear reducing unit 88 and sprocket 89. The latter through a .sprocket chain 91 and sprocket 92, mounted on the axle 93 of the wheel 12, is employed to move the apparatus from one location to another.

From the foregoing description, the operation of my improved apparatus 'will' be readily understood. Assuming-aasection of railway track in which a number of cross ties have failed and are to be removed, the rails are jacked up adjacent the tie to be removed and it is detachedv and pulled out from under the rails. The vehicle then moves to place the scarifying

tool holders

27 and 28 over the location where the tie has been removed. The

tools

39 and 41 are then lowered by means of the hydraulic cylinders 59a and 61 until they are engaged with the roadbed 52 as indicated in Figs. 2 and 3 of the drawing. The tools are then reciprocated by means of the

hydraulic cylinders

43 and 44. It requires only a few reciprocations of the tools to loosen the roadbed sufficiently for a new crosstie to be put in place. The tools are then raised by means of the cylinders 59a and 61 out of the way, and the apparatus is moved to a new location. During the reciprocation of the scarifying tools, the apparatus is held against lateral movements relative to the track by means of the

counteracting holding elements

70 and 71.

From the foregoing it will be apparent that I have devised improved apparatus for scarifying the roadbed of a railway track which is particularly useful when removing and replacing cross ties.

While I have show' my invention in but one form, it

will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications. without departing from the spirit thereof, and I-desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in-the append'edclaims.

What I claim is:

1. In apparatus for, scarifying a railway roadbed, a vehicle adapted to run on the rails, a frame pivotally mounted on one end of the vehicle and extending over the vehicle with a portion thereof overhanging the opposite end of said vehicle, guideways mounted on the overhanging portion and extending transversely of the roadbed, a pair of carrying members mounted in the guideways to reciprocate outwardly and inwardly from the center of the roadbed, first and second scarifying tools mounted on each carrying member in position to extend downwardly in engagement with the roadbed, said first scarifying tool being mounted at the inner end of each carrying member and adapted when the carrying member is at its inner position to engage the roadbed adjacent the center thereof, and said second scarifying tool being adapted to engage the roadbed adjacent the outer side of the rail when the carrying member is at its inner position, power means to reciprocate the tools, and other power means to raise and lower the frame and the tools thereon relative to the roadbed.

2. In apparatus for scarifying a railway roadbed when cross ties are being removed and replaced, a vehicle frame having supporting wheels adapted to run on the rails, a power unit mounted on the vehicle frame including a prime mover and means driven by the prime mover to develop hydraulic pressure, a second frame pivoted to the rear of the vehicle and including longitudinal members extending forwardly over and overhanging the front of the vehicle frame, a tool carriage frame mounted on overhanging ends of the longitudinal members and extending transversely in front of the vehicle frame, a pair of tool carrying members mounted in the tool carriage frame to reciprocate outwardly and inwardly from the center of the roadbed, a pair of scarifying tools mounted on each tool carrying member and being disposed to extend downwardly below the rails into the roadbed, one of said pair engaging the roadbed from the center thereof outwardly to the adjacent rail and the other of said pair engaging the roadbed from the outer side of the rail to the outer ends of the cross ties, hydraulic cylinders operatively interposed between the tool carriage frame and the. tool carrying members to reciprocate the scarifying tools, other hydraulic cylinders cooperating between the forward end of the vehicle frame and the second frame to raise the tool carriage frame with its tools clear of the roadbed, and snubbing members pivotally mounted on the front of the tool carriage frame.

3. In apparatus for scarifying a railway roadbed between existing cross ties on which roadbed previously supported cross ties have been removed, a vehicle adapted to run on the rails, a frame pivotally mounted on the vehicle and having a portion thereof overhanging an end of said vehicle, a tool carriage frame mounted on the overhanging portion and extending transversely of the roadbed, a pair of tool carrying members mounted in the tool carriage frame to reciprocate outwardly andinwardly from a position intermediate the rails, scarifying tools mounted on each of said tool carrying members and adapted to engage the roadbed between the rails and from the outer sides of the rails to the outer ends of the cross ties, power means to reciprocate the scarifying tools, and other power means to raise the scarifying tools from engagement with the roadbed.

4. In apparatus for scarifying a railway roadbed between existing cross ties on which roadbed previously supported cross ties have been removed, a vehicle adapted to run on the rails, a frame pivotally mounted on the vehicle and having a portion thereof overhanging an end of said vehicle, a tool carriage frame mounted on the overhanging portion and extending transversely of the roadbed, a pair of tool carrying members extending transversely of said roadbed and mounted in the tool carriage frame to reciprocate outwardly and inwardly from a position intermediate the rails, scarifying tools mounted on each of said tool carrying members and adapted to engage the roadbed between existing cross ties, the scarifying tools on each of said tool carrying members engaging theroadbed from said intermediate position outwardly to the adjacent rail and from the outside of the rail to the outer ends of the cross ties, power means to reciprocate the tool carrying members and scarifying tools thereon, and other power means to raise said tool carrying frame with its tools thereon from engagement with the roadbed.

References Cited in the file of this patent UNITED STATES PATENTS Herr et a1. July 26, 1898 Jackson Mar. 17, 1925 Overmier June 15, 1926 Vaughn June 10, 1930 Robb July 15, 1930 M'cWilliams et a1 Dec. 24, 1935