US3274907A - Vibrating and tamping devices - Google Patents

Vibrating and tamping devices Download PDF

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Publication number
US3274907A
US3274907A US301151A US30115163A US3274907A US 3274907 A US3274907 A US 3274907A US 301151 A US301151 A US 301151A US 30115163 A US30115163 A US 30115163A US 3274907 A US3274907 A US 3274907A
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United States
Prior art keywords
crank
pair
rotation
crank pins
mass
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Expired - Lifetime
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US301151A
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English (en)
Inventor
Haage Konrad
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HEUSSER DELMAG AG
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HEUSSER DELMAG AG
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators

Definitions

  • the present invention relates to vibrating and tamping devices used for compacting masses such as earth used for building foundations, roadways, said, concrete, etc.
  • the objects of the invention include the provision of a device of relativelysimple and inexpensive construction which will be able to operate with a relatively high number of beats per minute while at the same time reliably making contact with the mass which is worked on once during each revolution of the crank shafts of the device.
  • FIG. 1 is a partly schematic, partly sectional side view of one possible construction of a vibrating and tamping device according to the present invention
  • FIG. 2 is a transverse sectional view taken along line 2-2 of FIG. 1 in the direction of the arrows but omitting the driving engine which is located at the upper part of the plane in which the section of FIG. 2 is taken;
  • FIG. 3 is a diagrammatic illustration of the manner in which the structure of the invention operates.
  • the entire assembly which forms the device of the invention includes essentially only three moving weights or masses.
  • One of these moving weights or masses is formed by the working plate means 2 which has the form of an open-top container, this working plate rneans 2 having a bottom wall which engages the mass which is to be compacted and having a continuous side wall extending upwardly from the periphery of the bottom wall.
  • the continuous side wall of the working plate means 2 has a pair of opposed parallel side wall portions which respectively receive crank pins of a pair of crank means of the invention.
  • the structure includes a pair of crank means 4a and 4b, and the crack means 4a has a pair of outer coaxial crank pins 41a which are respectively received in mating openings in the pair of opposed parallel side wall portions of the working plate means 2, while the other crank means 4b, which is identical with the crank means 4a, has a pair of outer coaxial crank pins 41b which are respectively received in mating openings in the opposed parallel side wall portions of the working plate means 2.
  • the working plate means 2 is located at the lowest part of the apparatus and has a continuous bottom wall which forms the only part of the apparatus which engages the mass which is to he compacted.
  • Each crank means 4a and 4b includes a pair of spaced coaxial discs 42a, 42b respectively, rotatably mounted in openings formed in a pair of opposed parallel side walls of a first support means 1, a pair of outer or first laterally projecting offset crank pins 41a, 41b, respectively, and a body portion, namely, a second or inner crank pin 43a, 43b, respectively, connecting each pair of discs.
  • the axis a of the outer or first crank pins is offset a distance r from the axis of rotation b of the crank discs which constitutes also the axis of rotation of the respective crank means.
  • crank means 4a includes a pair of coaxial crank discs 42a which have their common axis coinciding with the axis of rotation of the crank means 4a, and the pair of outer or first crank pins 4111 respectively have their common axis located at a distance r from the common axis of the crank discs 42a.
  • crank means 4b which is identical with the crank means 4a has a pair of coaxial crank discs 42!) which have a common axis 11 forming the central axis of rotation of the crank means 412, and the common axis a of the pair of outer or first crank pins 41b are also spaced from the common axis b of the crank discs 42b by the distance r as is shown most clearly in FIG. 2.
  • crank discs 42a and 421 are respectively supported for rotary movement in mating openings formed in a pair of opposed parallel side walls of an elongated channel member 1 which has a top wall from opposite sides of which the side wall of the channel member extend downwardly, so that the cross section of the channel member 1 has the configuration of an inverted U, and this channel member 1 forms a first support means for the structure of the invention, this first support means forming the second of the three principal masses of the vibrating and tamping devices of the invention.
  • the channel member or first support means 1 extends downwardly into and is received within the elongated open-top container which forms the working plate means 2 and which latter constitutes second support means for supporting said first support means.
  • crank discs 42a are interconnected by way of an inner or second crank pin 43a which extends between and is fixed at its ends to the pair of crank discs 42a, and in the same way the pair of crank discs 42b are fixed to each other by a crank pin 4% identical with the crank pin 43a and extending between and fixed to the pair of discs 42b, shown most clearly in FIGS. 1 and 2, and each of the pins 43a and 43b constituting a second crank pin and having with respect to the axis 11 of its crank means an axis c which is spaced therefrom by a distance r (FIG.
  • the third principal mass of the device of the invention is formed by a balancing plate means 3 in the form of an elongated block of metal, for example, which is formed with a pair of parallel bores in the region of the respective ends thereof and through which the crank pins 43a and 43b respectively extend with a snug sliding fit. It will be noted that the balancing plate means 3 is situated in the space enclosed within the channel member or support means 1.
  • crank discs 42a and 42] which are supported for rotation by one of the walls of the channel member or first support means 1 (the left wall as viewed in FIG. 2) respectively fixedly carry a pair of ring gears 5a and 5b which are fixed coaxially to these crank discs, and these ring gears 5a and 5b mesh with an intermediate gear 6 which is supported for rotation by the same side wall of the channel member 1, so that in this way the several gears form a transmission means which is also accommodated in the space within the channel member 1 and which interconnects the pair of crank means in such a way that they are compelled to rotate in synchronism.
  • the structure includes a pair of crank means 4a and 4b which are identical and which have at any given instant the same positions relative to the first support means 1, so that the pair of crank pins 41a and 41b at one side of the assembly will at any given instant have the same positions relative to the axes of the pair of crank means while the pair of crank pins 43a and 43b will also have at any given instant the same relative positions with respect to the axes of the pair of crank means, but the positions of the axes of the crank pins 43a and 43b will always be displaced by with respect to the positions of the crank pins 41a and 41b.
  • These latter pins are connected to the working plate means while the crank pins 43a and 43b are connected to the balancing plate means 3, and of course the entire structure is supported by the second
  • the first support means 1 carries at its upper surface a driving motor in the form of an internal combustion engine 8, in the illustrated example, and this motor or engine 8 is supported by way of springs 13 on a plate which is in turn separated by additional springs 13 from the member 1, so that in this way the driving motor 8 is insulated from the remainder of the structure in such a way that the motor 8 is protected against shocks.
  • a transmission shaft 9 is connected through universal joints on the one hand to the output or drive shaft of the drive motor 8 and on the other hand to the input of a reversible transmission assembly 7 the output gear 10 of which meshes with the ring gear 5a which of course has its rotation transmitted through the gear 6 to the other ring gear 5b. It is pointed out that this arrangement is illustrated only by way of example and the output gear of the transmission could just as well mesh with the ring gear 511 or indeed the intermediate gear 6.
  • One end of the support means 1 is provided with a pair of eyes 11 carrying a pivot pin on which one end of a guiding pole 12 is supported, and the operator by engaging the pole 12 can guide the direction in which the device of the invention moves.
  • the working plate means 2 Interconnects the pair of crank means in much the same way that a pair of wheels of a locomotive are interconnected by a connecting rod which is pivotally connected at its ends to such a pair of wheels with these ends of the connecting rod going around the axes of the pair of wheels while the connecting rod itself moves around and around these axes.
  • a substantially similar connectlon of the working plate means 2 to the pair of crank means 4a and 4b is provided with the structure of the invention.
  • the balancing plate means 3 is connected by way of the crank pins 43a and 43b to the pair of crank means 4a and 412 so that each part of the balanc ng plate means 3 will move along a circular path during rotation of the pair of crank pins 43a and 43b, and these circular paths of every part of the balancing plate means 3 will correspond to the circles along which the crank pins 43a and 43b turn respectively around the pair of axes of the pair of crank means 4a and 412.
  • the balancing plate means 3 is connected to the pair of crank means in a manner similar to the working plate means 2.
  • the balancing plate means 3 is capable of eliminating any free inertia forces which of course would be highly undesirable.
  • the bodies 2 and 3 are shaped in such a way that they can have unobstructed movement relative to the support means 1.
  • the movement of the bodies 1 and 2 with respect to each other is relatively small so that sealing of the 'bodies 1 and 2 relative to each other so as to prevent dust or dirt from entering into the structure of the invention, by the use of suitable rubber rings, sealing sleeves, or the like, is easily possible.
  • each crank means and the speed of rotation thereof are chosen in such a way that the device jumps up away from the mass 14 and again contacts the mass 14 after falling down when the outer crank pins 41a and 41b have angular positions a in advance of their bottom dead center positions, as indicated in FIG. 3.
  • the working plate means 2 will engage the mass 14 when the outer crank pins are in advance of their bottom dead center positions by an angle of less than 90, and as a result of this operation there is provided a horizontal component W for the device and a predetermined vertical component W
  • the size of the radius r and the speed of rotation 11 of the crank means will determine the magnitude of the vector W shown in FIG. 3, and thus the vertical component W will be equal to W sin a while the horizontal component W will be equal to W- cos a, as is apparent from FIG. 3.
  • the magnitude of the angle a automatically adjusts itself according to the yieldability of the mass 14 which is worked on, and when a change in the yieldability of this mass 14 is encountered the angle a will change until equilibrium is reached during which the angle at will remain the same throughout the operation until the nature of the mass 14 again changes. Assuming, for example, that the structure operates with a predetermined angle a and that the mass 14 changes in such a way that it becomes softer or more yieldable. As a result the extent to which the device jumps up from the mass 14 diminishes because the working plate means 2 will press further into the more yieldable mass when engaging the latter.
  • the device of the invention can never jump so high from the mass on which it is working that the working plate means 2 does not again engage the mass 14 during each revolution.
  • the reversible transmission 10 makes it possible to reverse the direction of rotation of the crank means so that the device can be moved forwardly or rearwardly.
  • a further advantage of the structure of the invention as compared to those structures which include rotary unbalanced weights is that the device of the invention advances along the mass which is being worked on with a uniform speed.
  • the extent to which the device of the invention jumps up from the mass on which it is working increases according to the square of l/n, wherein n is the speed of rotation of each crank means, as the speed of rotation of each crank means diminishes and as the crank radius r increases, so that at relatively low speeds of operation, which is to say speeds of rotation of each crank means, the vibrating device operates very eifectively as a tamping device, and thus is highly suitable for the compacting of cohesive, non-particulate masses.
  • first support means for compacting a mass located beneath the device, in combination, first support means; a pair of rotary crank means, each of said rotary crank means including means for supporting the respective crank means on said first support means; for rotation about a predetermined axis of rotation and first and second crank pins .angularly displaced from each other by about said axis of rotation and the axes of said first and second crank pins being respectively parallel to said axis of rotation, said pair of rotary crank means having at any given instant the same angular positions relative to said support means, during operation of the device, so that at any given instant the angular position of said first crank pins with reference to the axes of rotation of the pair of crank means are identical and said second crank pins of said pair of crank means also have respectively with respect to said axes of rotation identical angular positions displaced by 180 about said axes of rotation with respect to the positions of said first crank pins; working plate means operatively connected to said first crank pins for movement therewith and
  • said working plate means being in the form of an open-top container having a bottom, mass-engaging wall and a continuous side wall extending upwardly from the periphery of said bottom wall
  • said first support means being in the form of an elongated channel member having a top wall and a pair of side walls extending downwardly from said top wall into the interior of said working plate means, said side walls of said first support means supporting said pair of rotary crank means for rotation
  • said balancing plate means being located between said side walls of said first support means as well as between said top wall of said first support means and said bottom wall of said working plate means.
  • transmission means extending between and operatively connected to said pair of crank means for maintaining the latter in synchronous rotation with respect to each other, said transmission means also being accommodated within the space between said side walls of said first support means.
  • said pair of crank means, said working plate means, and said balancing plate means having with respect to each other a relationship which provides these elements with a common center of gravity which remains stationary with respect to said first support means during operation of the device.
  • first support means a pair of rotary crank means, each of said rotary crank means including means for supporting the respective crank means on said first support means for rotation about a predetermined axis of rotation and first and second crank pins angularly displaced from each other by 180 about said axis of rotation and the axes of said first and second crank pins being respectively parallel to said axis of rotation, said pair of rotary crank means having at any given instant the same angular positions relative to said support means, during operation of' the device, so that at any given instant the angular position of said first crank pins with reference to the axes of rotation of the pair of crank means are identical and said second crank pins of said pair of crank means also have respectively with respect to said axes identical angular positions displaced by 180 about said axes of rotation with respect to the positions of said first crank pins; working plate means operatively connected to said first crank pins for movement therewith and located
  • first support means a pair of rotary crank means, each of said rotary crank means including means for supporting the respective crank means on said first support means for rotation first about a predetermined axis of rotation and first and second crank pins angularly displaced from each other by 180 about said axis of rotation and the axes of said first and second crank pins being respectively parallel to said axis of rotation, said pair of rotary crank means having at any given instant the same angular positions relative to said support means, during operation of the device, so that at any given instant the angular position of said first crank pins with reference to the axes of rotation of the pair of crank means are identical and said second crank pins of said pair of crank means also have respectively with respect to said axes of rotation identical angular positions displaced by 180 about said axes of rotation with respect to the positions of said first crank pins; working plate means operatively connected to said first crank pins for movement therewith and
  • a vibrating and tamping device for compacting a mass located beneath the device, comprising, in combination, first support means; a pair of rotary crank means, each of said rotary crank means including means for supporting the respective crank means on said first support means for rotation about a predetermined axis of rotation and first and second crank pins angularly displaced from each other by about said axis of rotation and the axes of said first and second crank pins being respectively parallel to said axis of rotation; means coacting with said pair of crank means for maintaining them respectively at the same angular positions and for rotating them synchronously, so that at any given instant the angular position of said first crank pins with reference to the axes of rotation of the pair of crank means are identical and said second crank pins of said pair of crank means also respectively have at any given instant with respect to said axes of rotation identical angular positions displaced by 180 about said axes of rotation with respect to the positions of said first crank pins; working plate means operatively connected to said first crank pins for movement there
  • a vibrating and tamping device for compacting a mass located beneath the device, comprising, in combination, first support means; a pair of rotary crank means, each of said rotary crank means including means for supporting the respective crank means on said first support means for rotation about a predetermined axis of rotation and first and second crank pins angularly displaced from each other by 180 about said axis of rotation and the axes of said first and second crank pins being respectively parallel to said axis of rotation; drive means carried by said support means and operatively connected to said pair of rotary crank means for rotating the latter while maintaining them respectively at the same angular positions relative to said support means, so that at any given inst-ant the angular position of said first crank pins with reference to the axes of rotation of the pair of crank means are identical and said second crank pins of said pair of crank means also have with respect to said axes of rotation at any given instant identical angular positions respectively displaced by 180 about said axes of rotation with respect to the positions of said first crank pins
  • an elongated channel member having a top wall and a pair of parallel side walls extending downwardly from said top wall; a first pair of coaxial, identical crank discs supported for rotation by said pair of side walls; a first inner crank pin extending between said side walls and fixed to said first pair of crank discs, the axis of said first inner crank pin being located at a given radial distance from the common axis of said first crank discs; a second pair of rotary crank discs coaxial with each other and identical with said first pair of crank discs, said second pair of crank discs also being supported for rotation by said pair of side walls and having their common axis parallel to the common axis of said first pair of discs; a second inner crank pin extending between said side Walls and fixed to said second inner pair of crank discs, the axis of said second crank pin being located from the common axis of said pair of second discs by the same distance that the
  • drive means carried by said channel member and operatively connected to at least one of said crank discs for rotating the latter.
  • transmission means interconnecting the pair of rotary crank discs which are carried by one of said side walls for compelling said crank discs to rotate synchronously.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Architecture (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Supercharger (AREA)
  • Road Paving Machines (AREA)
US301151A 1962-08-16 1963-08-09 Vibrating and tamping devices Expired - Lifetime US3274907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0039630 1962-08-16

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US3274907A true US3274907A (en) 1966-09-27

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US (1) US3274907A (de)
AT (1) AT245026B (de)
CH (1) CH409796A (de)
DE (1) DE1484439A1 (de)
GB (1) GB1028580A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603224A (en) * 1969-02-18 1971-09-07 Ingersoll Rand Co Plate-type vibrator compactor
US3817646A (en) * 1973-04-30 1974-06-18 Wacker Corp Vibration generator
US3871788A (en) * 1972-02-04 1975-03-18 Marshall Fowler Ltd Vibrating roller
US4412757A (en) * 1980-09-05 1983-11-01 Delmag-Maschinenfabrik Reinhold Dornfeld Gmbh & Co. Vibration machine for compacting materials, in particular an earth compacting machine
CN113322749A (zh) * 2021-07-12 2021-08-31 吉林建筑大学 一种建筑施工用打夯机
CN117904942A (zh) * 2024-03-20 2024-04-19 山东泰和城建发展有限公司 公路养护修补设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB446169A (en) * 1933-09-23 1936-04-24 Georg Heinrich Schieferstein Improvements in or relating to ramming and the like machines
US2084983A (en) * 1933-09-05 1937-06-29 Baily Robert William Apparatus for kneading and working plastic material
DE700972C (de) * 1935-02-05 1941-01-06 Robert Wacker Fa Ruettelvorrichtung
US2908206A (en) * 1956-09-27 1959-10-13 Robert C Melanson Multiple tamping machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084983A (en) * 1933-09-05 1937-06-29 Baily Robert William Apparatus for kneading and working plastic material
GB446169A (en) * 1933-09-23 1936-04-24 Georg Heinrich Schieferstein Improvements in or relating to ramming and the like machines
DE700972C (de) * 1935-02-05 1941-01-06 Robert Wacker Fa Ruettelvorrichtung
US2908206A (en) * 1956-09-27 1959-10-13 Robert C Melanson Multiple tamping machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603224A (en) * 1969-02-18 1971-09-07 Ingersoll Rand Co Plate-type vibrator compactor
US3871788A (en) * 1972-02-04 1975-03-18 Marshall Fowler Ltd Vibrating roller
US3817646A (en) * 1973-04-30 1974-06-18 Wacker Corp Vibration generator
US4412757A (en) * 1980-09-05 1983-11-01 Delmag-Maschinenfabrik Reinhold Dornfeld Gmbh & Co. Vibration machine for compacting materials, in particular an earth compacting machine
CN113322749A (zh) * 2021-07-12 2021-08-31 吉林建筑大学 一种建筑施工用打夯机
CN117904942A (zh) * 2024-03-20 2024-04-19 山东泰和城建发展有限公司 公路养护修补设备
CN117904942B (zh) * 2024-03-20 2024-05-14 山东泰和城建发展有限公司 公路养护修补设备

Also Published As

Publication number Publication date
GB1028580A (en) 1966-05-04
AT245026B (de) 1966-02-10
DE1484439A1 (de) 1969-03-13
CH409796A (de) 1966-03-15

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