US2223734A

US2223734A - Gang vibrator construction

Info

Publication number: US2223734A
Application number: US201761A
Authority: US
Inventors: Mall Arthur William
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-04-13
Filing date: 1938-04-13
Publication date: 1940-12-03
Anticipated expiration: 1957-12-03

Description

Dec. 3, 1940. v w M 2,223,734

GANG VIBRATOR CONSTRUCTION Filed April 13, 1938 4 Sheets-Sheet 1 lilfcrw Qr/iZI/W 7/42 Dec. 3, 1940. A. w. MALL GANG VIBRATOR CONSTRUCTION Filed April 13, 1938 4 Sheets-Sheet 2 [Weill '01 aria/i (all/aw M fly Dec. 3, 194@. w L 2,223,734

GANG VIBRATOR CONSTRUCTION Filed April 15, 1958 4 Sheets-Sheet 4 Patented Dec. 3, 1940 UNITED STATES PATENT OFFICE GANG VIBRATOR oons'rnucrrlon Arthur William MalL'chicago, in. Application April 1a, 1938, Serial no. 201,761 I 12 Claims. (01. 94-48 My invention relates to gang vibrator mechanisms and like devices. U

My invention relates more particularly to vibrator mechanisms of this type capable of being attached to screed handling machines or other road machinery for use in compacting unset cement or other road building material.

The principal object of the present invention is to provide a gang vibrator capable of being attached to road building or similar machinery.

A further object of the invention is to provide such a mechanism capable of being operated from the road machine and capable of lateral movement upon the same.

A further object of the invention is to provide a plurality of vibrators adapted to be moved about and controlled as a single unit by an operator from a platform on the road building machine to which the mechanism is attached.

A further object of the present invention is to provide a gang vibratorunit including a plurality of vibratory elements adapted to be driven from a single source'of power.-

A further object of the invention is to provide an improved construction of gang vibrators for operating a plurality of individual vibrator units with a single line shaft and a single source of power mounted pon the end of a screed or other road building machine.

. The improved gang vibrator which forms the subject matter of this application may generally consist of a platform movable back and forth on the end of a screed supporting machine or other road building machine. The platform is adapted to support a pivotally mounted super-structure upon which a gasoline engine is positioned. The super-structure may also include a line shaft extending from side to side of the same and provided with a plurality of transmission members for operating individual vibrator units. The super-structure must necessarily be pivotally mounted so that the vibrators can be raised and lowered into the unset concrete when desired by the operator of the finishing machine. With an arrangement like this it will be apparent that the entire slab of' the road from one side to the other will be thoroughly vibrated internally with a minimum of power and in a minimum amount of time. i

Other objects and advantages will be more apparent from the following description, wherein reference is had to the accompanying four sheets of drawings, upon which v I Fig. 1 is a front elevational viewof a'road 'fied form of transmission showing the use of have chosen toillustrate, I have shown a porbujlding machine with my improved gang vibrator mounted thereon;

Fig. 2 is a plan View of the same;

Fig. 3 is a'vertical sectional view of a portion of the road machine and the gang vibrator taken generally on the lines 3-3 of Fig. 1 with parts broken away in section to more clearly show other parts;

' Fig. 4 is a similar vertical sectional view with the carriage for the gang vibrator in a changed position upon the road machine and with the end of the super-structure carrying the individualvibrators tilted upwardly;

Fig. 5 is an enlarged sectional View through the transmission and portion of the flexible shaft of an individual vibrator taken generally on the line 55 of Fig. 1;

Fig. 6 is a cross-sectional view through a modiindividual shafts between each vibrator unit; and f I a Fig. 7 is a side elevational view of the same with the shaft broken in section.

' In theembodiment of the invention which I adjacent the end of the same.

The gang vibrator may be provided with a frame or carriage 22 positioned between the previously described channel members and provided with downwardly extending side wall portions 24 andZG. The rollers 28 and Marc journalled in the side Walls 24 and and engage the channel members l8 and 20. Thus the frame 22 may be rolled back and forth between the positions shown in Figs. 3 and 4 of the drawings and ride in the'tracks formed by the

channel members

18 and 20. 1 ,The'frame of the gang. vibrator may be provided with a bearing portion 32 which carries a horizontally disposed shaft 34. The super-structure 36 may be formed with the

end walls

38 and 40 and be pivotally mounted upon the shaft 34. The structure may be formed with a rear platform 42 .to support a source of power such as the 50 gasoline engine 44. The

side walls

38 and 40 may extend forward and be rigidly connected to a horizontal channel member 46 which is adapted to extendacross the front of the screed to a point adiacent'both sides of the same. The channel 46 .the ball bearing member 56.

may support a plurality of transmission housings 48 which are all connected, as will be later described, to a horizontally disposed drive shaft 50. The shaft 50 is provided with a pulley 52 which is in driving engagement with the drive Wheel 54 of the engine 44 by means of the V-belt members 56.

A worm wheel 52' may be provided in each of the transmission housings keyed to the shaft 50 and in driving relation to a worm wheel 54 vertically disposed in the housing 48 and mounted in The hub of the worm wheel-54 may have a screw threaded portion 58 mounted in the tapped opening 60 of r a hollow stub shaft 62. A flexible shaft 64 provided with a screw threaded tip 66 may engage the 7 lower end of the tapped opening 6'8 of the shaft 62. A suitable coupler member 10 may connect it the flexible shaft housing 12 to a stationary collar 14 in the lower end of the transmission housing 48. A look nut 16 may hold the same in a fixed position. 1

The flexible shaft 64 may extend downwardly and be connected in driving relation toan offbalance weight in a vibrator casing 89 suspended below the transmission housing 48. The vibrator which includes the casing and the unbalanced weight may be of the usual type shown and described in my Patent No. 2,073,393 dated March 9, 1937. Since that patent gives a complete description of the construction of the same, further details will not be given herein. It is sufiicient to state that'the lower end of the flexible shaft is in driving engagement with an offset weight mounted in suitable bearings in the upper and lower, end of the shell of the housing of the vibrator.

With the apparatus thus described, it will be apparent that a single source of power such as the engine 44 may drive the line shaft 50 and impart vibratory motion to a plurality of vibrator units 80. Because of the fact that it is necessary to raise and lower the vibrators into and out of the unset concrete, the super-structure which supports the engine and the gang of vibrators, has been pivotally mounted upon. the support shaft 34 in the frame of the unit. It will also be obvious that the entire gang vibrator maybe moved back and forth between the parallel rails 16 -and3ll upon the

rollers

28 and 20. .In order to swing the vibrators about as indicated by the dotted line in Fig. 3, itl is only necessary to start rocking the super-structure upon the supporting shaft 32.

In Figs. 6 and 7, I have shown a modified form of construction wherein I employ a plurality of individual shaft members 63connected to suitable driving means in the transmission housings 48 The housings may be supported by'a hanger mounting 65 secured by suitable bolt members 61 to the front channel member 46. It will be noted that "I have provided elongated bolt holes 69 in the channel members 46 so that the exact location of, the vibrator unit may be shifted sideways some distance, if desired. I

, Theftransmission housing 48 may be provided with a pair of splined drive units H and 12 mounted in suitable ballbearing mountings 13 and 'l5 inside chambers 11 and T9 of the transmission housing. Iprovide a spiral bevel gear'8l securely fastened to the splined driving members 72 and H. The spiral bevel gear maymesh with asimila'rlyformed pinion 86 provide'dwith a stub shaft65' mounted in a pair of'ballbearing members 81 and 89 in a downwardly disposed portion 9| of the transmission housing.

A collar member 93 may be sorew-threadedly secured in the lower end of the housing 9|, being held in position by a lock nut 95. The lower end 91 of the collar 93 is screw-threaded and adapted to engage in a tapped opening 99 in the flexible shaft collar 10' similar to that previously described. In a similar manner the flexible shaft 64 may have its tip 66 engage in a tubular stub shaft 62 that isscrew-threadedly connected to the portion 58 of the stub shaft 85.

It will be noted that the splined driving members II and 12 are securely connected together by the extension 1| which provides in the transmission housing in effect a pair of oppositely directed 'splined driving means. Suitable collars I03 and may be secured to the stub shafts 63 and enclose the open ends of the transmission housing. Suitable dust .eliminators and washers may be provided to effectively seal the opening so that no "dirt or dust may enter the transmission housing 48.

With the above construction, it will be seen that the individual vibrators and transmission housings may be shifted to the right or to the left and by the use of the elongated slots 69 in the supporting channel 46, and the comparatively long splined driving units 11 and 12, that a considerable movement of the transmission housings one way or another may be made without in any way disturbing the efiicient drive from the source of power to the vibrators.

In the form which 'I have illustrated, I have provided a pulley 52 on one of the stub shafts which is adapted to be driven at approximately 2300 R. P. M. With a 3 to' 1 ratio between the bevel gear 8| and the pinion 83, it will thus be seen that the vibrator attains a speed of approximately '7000 R. P. M.

From the above and foregoing description, it will be apparent to those skilled in the art that changes and modifications may be made in theopposite side of said frame, said driveshaft and engine connected together in -driving relation, a pluralityv of bevel gearsion said line shaft, anda plurality of vibrator units suspended ,below said gear housings in driving connection with said bevel gears;

,2. :Apparatus of the. class describedadapted to be mounted upona road building machine, including :a ;pair;of spaced parallel channel .members mounted on said road building machine, a truck, .a frame, mounted for back and forth movementbetween said channel membersra secondframe-pi-votally mounted adjacent one endof said truck, an engine mounted upon said second frame, av horizontal driveshaft mounted at an oppositesideof said frame, said driveshaft and engineconnected together -;in; driving relation, 1a

plurality of bevel gears qon-said :line shaft, and

a plurality of vibratorunits suspended belowsaid gear housings in driving connection with said bevel gears, each of said vibrator units including a flexible shaft, a tubular casing and an unbalanced weight mounted in said casing and driven by said motor through said flexible shaft.

3. Apparatus of the class described capable of being supported upon a road building machine, including a pair of spaced parallel channel members disposed on said road building machine, a truck mounted for back and forth movement between said channel members, a. pivotally mounted frame carried by said truck, an engine disposed upon one side of aid frame, a plurality of transmission housings disposed upon another part of said frame, stub shafts in driving connection with all of said transmissions, and a plurality of vertically suspended vibrator units driven by said engine through all of said stub shafts and said transmissions.

4. An apparatus of the class described comprising a frame, a source of power means mounted thereon, a plurality of transmission housings spaced from each other and mounted on the frame, vibrator units extending from said housings, a shaft journalled in said housings and adapted to be rotated by said power means, and means for adjusting the transmission housings and vibrator units longitudinally of said shaft.

5. A highway vibrating apparatus for compacting concrete comprising a frame, a source of power means mounted thereon, a plurality of transmission housings spaced from each other and mounted on the frame, vibrator units extending from said housings, a shaft member journalled in said housings and adapted to be rotated as a single drive shaft by said power means, said shaft member comprising a plurality of separate sections operatively connected together within the transmission housings, said vibrator units being driven by said shaft member, and means for adjusting the transmission housings and vibrator units longitudinally of said shaft member.

6. A highway vibrating apparatus for compacting concrete comprising a frame, a source of power means mounted thereon, a plurality of transmission housings spaced from each other and mounted on the frame, vibratory members extending from said housings, a shaft member journalled in said housings driven'by said power means and operatively connected to said vibratory members, said shaft member comprising a plurality of sections, certain of said sections having openings therein and adapted to slidably reby the frame and driven by the power means,

means for adjusting each vibratory member longitudinally of the drive shaft and independently of the other vibratory members.

8. A vibrating apparatus for compacting concrete in highway construction, comprising a frame, a source of power means mounted thereon, a plurality of transmission housings spaced from each other and mounted on the frame, vibratory members extending from said housings, a shaft member journalled in said housings, driven by said power means and operatively connected to said vibrating members, said shaft member comprising a plurality of sections, certain of said sections having openings and being disposed interiorl of the transmission housings, said sections with openings being adapted. to slidably receive corresponding adjacent shaft sections, whereby adjustment of the transmission housings and vibratory members longitudinally of the shaft member may be obtained Without interfering with the operation of said shaft member.

9. A vibrating device for compacting concrete in road construction comprising a frame having supporting members adapted to ride upon the forms containing the concrete, a carriage member movably mounted on the frame, a second carriage member pivotally secured to the first carriage member, a plurality of vibratory units supported by the second carriage member, said vibratory units capable of being raised or lowered relative to the concrete by moving the second carriage member about its pivotal connection with the first carriage member, and said vibratory units being capable of horizontal adjustment relative to the frame by moving the first carriage member relative to the frame.

10. An apparatus as defined by claim 9 wherein the raising and lowering of the vibratory units relative to the concrete is facilitated by means of a counter-balancing inertia weight carried by the second carriage member.

11. An apparatus as defined by claim 9 wherein an inertia weight is mounted on the second carriage member on the side of the pivotal connection opposite the vibratory units, whereby the raising and lowering of the vibratory units relative to the concrete is facilitated.

12. A vibrating device for compacting concrete in road construction comprising a frame having supporting members adapted to ride upon the forms containing the concrete, a carriage member movably mounted on the frame, a second carriage member secured to the first carriage member by means of a pivotal connection located in the intermediate region of the second carriage member, a plurality of vibratory units supported by the second carriage member, said vibratory units capable of being raised or lowered relative to the concrete by moving the second carriage member about its pivotal connection with the first carriage member, and said vibratory units being capable of horizontal adjustment relative to the frame by moving the first Carriage member relative to the frame.

ARTHUR WILLIAM MALL.