US3311193A - Multiple boom apparatus - Google Patents

Multiple boom apparatus Download PDF

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Publication number
US3311193A
US3311193A US488688A US48868865A US3311193A US 3311193 A US3311193 A US 3311193A US 488688 A US488688 A US 488688A US 48868865 A US48868865 A US 48868865A US 3311193 A US3311193 A US 3311193A
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boom
platform
structures
lifting
lifting equipments
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US488688A
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Jay M Eitel
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TELSTA CORP
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TELSTA CORP
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • Another object of the invention is to provide a multiple boom apparatus of the above character which is mounted on a single self-propelled vehicle.
  • Another object of the invention is to provide a multiple boom apparatus of the above character which can be utilized for lifting elongate elements such as pipe or conduit and positioning them in a horizontal position.
  • Another object of the invention is to provide a multiple boo-m apparatus of the above character which can be utliized for supporting a catwalk or scaffolding upon which workmen may walk and which can be controlled by the workmen on the catwalk.
  • Another object of the invention is to provide a multiple boom apparatus of the above character in which the booms can be stowed in an out-of-theway position so that the apparatus can travel down a highway.
  • Another object of the invention is to provide a multiple boom apparatus of the above character which can be readily placed in operation.
  • FIGURE 1 is a perspective view of a multiple boom apparatus incorporating the present invention showing the booms in use.
  • FIGURE 2 is a top plan view of the multiple boom apparatus incorporating the present invention with the boom structures stowed in an out-of-the-way position but with individual workmans platforms.
  • FIGURE 3 is a side elevational view of the apparatus shown in FIGURE 2.
  • the present invention consists of a mobile platform.
  • Two separate lifting equipments are mounted upon the platform.
  • Each of the lifting equipments in cludes an elongate boom structure in which the outer end of the boom structure can be raised and lowered about a horizontal axis, rotated about a vertical axis and extended and retracted.
  • the boom structures can be positioned in such a manner so that a workmans platform or scaffold can be connected between the outer ends of the boom structures to provide a supporting surface for workmen.
  • the multiple boom apparatus consists of a self-propelled vehicle 11 having front and rear wheels 12 and 13, and a chassis (not shown) upon which a platform 14 is mounted.
  • a cab 16 is mounted on the front end of the chassis and contains means (not shown) for supplying motive power to the wheels 12 and 13 for advancing the vehicle.
  • Each of the lifting equipments 18 and 19 can be of any suitable type such as one with a extensible boom structure shown in the drawings, or alternatively, it can be a boom structure of the articulated type.
  • the lifting equipments 18 and 19 provided in the drawings are substantially identical.
  • Each lifting equipment is provided with a load supporting structure or turret 21 which is mounted upon the platform 14 in a manner as shown in United States Letters Patent No. 2,841,404.
  • the load supporting structure 21 is mounted for rotation about a vertical axis.
  • An extensible boom structure 22 is mounted upon the load supporting structure 21 for movement about a horizontal axis formed by the pivot shaft 23.
  • the extensible boom structure 22 is provided with an outer boom section 26 and an inner telescoping boom section 27.
  • Means is provided which includes a chain 28 for raising and lowering the outer end of the boom structure 22 about the horizontal axis formed by the shaft 23 and is generally of the type disclosed in United States Letters Patents No. 3,055,459 and No. 2,996,141.
  • Means is also provided for extending and retracting inner telescoping boom section 27 with respect to the outer boom section 26 and includes a drive motor 29 which is generally of the type disclosed in United States Letters Patent No. 2,896,750.
  • each of the lifts can be readily provided with controls which are accessible to an operator on the platform 19 for controlling the movement of the outer ends of the boom structures 22 and, if necessary, to operate the boom structures in unison.
  • the boom structures can be readily used for lifting elongate elements such as pipe, conduit and the like and keep them in a horizontal position while they are being raised and actually position them horizontally if such is required at the time they are released from the boom structures.
  • a large scaffold or platform 31 can consist of a horizontal bottom walkway 32.
  • Rigid structural end members 33 are mounted upon the walkway 32 and extend therefrom in a vertical direction.
  • the cross brace 34 interconnects the vertical members 33.
  • the platform 31 can be connected to the outer ends of the boom structures 22 in any suitable manner.
  • the end structures 33 are releasably connected to the end of the boom structures by pins or bolts (not shown).
  • Means is provided for damping movement of the platform so that workmen will not he accidentally spilled therefrom and consists of damping devices 36 connected between the outer end of the boom structure and the end structures 33 of the platform.
  • the platform 31 can pivot with respect to the outer ends of the boom structures 22 so that the walkway 32 will always remain in a horizontal position as the outer ends of the boom structures are raised and lowered.
  • the platform is stabilized by the damping devices 36 so that workmen will not be accidentally spilled therefrom. If necessary, and if the work is particularly hazardous, additional braces, such as braces 34, can be provided on the other side of the platform to prevent workmen from accidentally falling therefrom.
  • control device 41 has been provided for each of the lift equipments. These are mounted on opposite ends of the platform 31 as shown in FIGURE 1 of the drawings.
  • the control mechanisms 41 are of a type described in United States Letters Patent No. 2,841,404.
  • Hydraulically controlled Outriggers 46 of a type well known to those skilled in the art are mounted on the platform 14 and are provided for stabilizing the platform 14 during use of the boom structures 22 if such is required.
  • the apparatus can be utilized for a large number of construction and maintenance jobs. For example, it can be readily used by painters to eliminate the use of ladders, rope-lowered scaffolds and the like. To use the same, it is only necessary for the painters on the walkway 32 to operate the control mechanisms 41 in unison so that boom structures would be raised and lowered, extended and retracted, and rotated at substantially the same time so that the platform will always remain on a relatively stable horizontal plane to prevent workmen from being accidentally spilled therefrom.
  • the appratus also can be utilized with a platform inside plants for changing lamps within a plant and doing other maintenance and construction operations which must be carried out at a substantial elevation.
  • the platform When is it no longer desired to use the elongate platform 31 on the multiple boom structures 22, the platform can be removed therefrom and stowed in a suitable location.
  • the lifting equipments on the vehicle can then be utilized for other types of lifting operations.
  • the two boom structures could be utilized as cranes for raising very long lengths of conduit and pipe and maintaining them in a horizontal position and then placing them in a horizontal position. This can be accomplished by the use of conventional rigging secured to the end of the boom structures and tied to the pipe or other elongate elements.
  • the boom structures then can be controlled by an operator on the platform 14 who causes movement of the boom structures in synchronism as hereinbefore described to accomplish the desired task.
  • the boom structures can be provided with conventional workmans baskets 51, each of which has a control mechanism 52 mounted therein for controlling the lift.
  • the baskets 51 are carried by a pair of arms 53 secured to the outer end of the inner boom section 27, as shown in FIGURES 2 and 3.
  • the boom structures 22 can be stored in positions similar to those indicated in FIGURES 2 and 3 so that the vehicle can travel down the highway.
  • the boom structures can readily be positioned in the desired locations and, if necessary, the elongate platform 31 connected thereto and the entire apparatus placed in operation.
  • FIGURES 2 and 3 can be utilized with the separate and individual workmans baskets 51 shown therein if so desired.
  • a platform mounted upon the platform and spaced from each other, each of said lifting equipments having an elongate boom structure with its outer end adapted to be raised and lowered about a horizontal axis, rotated about a vertical axis and extended and retracted, controls for controlling the movement of the outer end of the boom structure and a horizontal walkway connected to the outer ends of the boom structures of the first and second lifting equipments.
  • a self-propelled vehicle having a platform, first and second lifting equipments mounted upon the platform in spaced relationship, each of said lifting equipments including a boom structure in which the outer end of the boom structure can be raised and lowered with respect to a horizontal axis, rotated with respect to a vertical axis, and extended and retracted toward and away from the platform, and a workmans platform removably connected between the outer ends of the boom structures and movable with the outer ends of the boom structures.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

J. M. EITEL March 28, 1967 MULTIPLE BOOM APPARATUS 2 Sheets-Sheet 1 Filed Sept. 20, 1965 INVENTOR. Jay M. Eiiel /71% @MQZQ Aiiorneys March 28, 1967 ElTEL MULTIPLE BOOM APPARATUS 2 Sheets-Sheet 2 Filed Sept. 20, 1965 Aflorneys United States Patent Cfilice 3,3lll,l3 Patented Mar. 28, 1967 3,311,193 MULTEPLE BQQM APPARATUS Jay M. Eitel, Los Altos, Calif., assignor to Telsta Corporation, San Carlos, Calif., a corporation of California Filed Sept. 20, 1965, Ser. No. 488,683 Claims. (Cl. 182-148) This invention relates to a multiple boom apparatus and more particularly to a multiple boom apparatus mounted on a selfpropelled vehicle.
'In construction and maintenance jobs, there are often requirements for lifting long pieces of pipe, conduit or other pieces of material and placing them in a horizontal position. In addition, there is often a requirement for scaffolds or catwalks for workmen to carry out maintenance inside and outside of plants, and other types of operations. The equipment heretofore available for such purposes has not been particularly suitable. There is, therefore, a need for equipment which can be utilized for such purposes.
in general, it is an object of the present invention to provide a multiple boom apparatus which can be utilized for a variety of functions.
Another object of the invention is to provide a multiple boom apparatus of the above character which is mounted on a single self-propelled vehicle.
Another object of the invention is to provide a multiple boom apparatus of the above character which can be utilized for lifting elongate elements such as pipe or conduit and positioning them in a horizontal position.
Another object of the invention is to provide a multiple boo-m apparatus of the above character which can be utliized for supporting a catwalk or scaffolding upon which workmen may walk and which can be controlled by the workmen on the catwalk.
Another object of the invention is to provide a multiple boom apparatus of the above character in which the booms can be stowed in an out-of-theway position so that the apparatus can travel down a highway.
Another object of the invention is to provide a multiple boom apparatus of the above character which can be readily placed in operation.
Additional features and advantages of the invention will appear from the following escription in which the preferred embodiment is set forth in detail in conjunction with the accompanying drawings.
Referring to the drawings:
FIGURE 1 is a perspective view of a multiple boom apparatus incorporating the present invention showing the booms in use.
FIGURE 2 is a top plan view of the multiple boom apparatus incorporating the present invention with the boom structures stowed in an out-of-the-way position but with individual workmans platforms.
FIGURE 3 is a side elevational view of the apparatus shown in FIGURE 2.
In general, the present invention consists of a mobile platform. Two separate lifting equipments are mounted upon the platform. Each of the lifting equipments in cludes an elongate boom structure in which the outer end of the boom structure can be raised and lowered about a horizontal axis, rotated about a vertical axis and extended and retracted. The boom structures can be positioned in such a manner so that a workmans platform or scaffold can be connected between the outer ends of the boom structures to provide a supporting surface for workmen.
As shown in the drawings, the multiple boom apparatus consists of a self-propelled vehicle 11 having front and rear wheels 12 and 13, and a chassis (not shown) upon which a platform 14 is mounted. A cab 16 is mounted on the front end of the chassis and contains means (not shown) for supplying motive power to the wheels 12 and 13 for advancing the vehicle.
At least two separate lifting equipments are mounted upon the platform 14. Each of the lifting equipments 18 and 19 can be of any suitable type such as one with a extensible boom structure shown in the drawings, or alternatively, it can be a boom structure of the articulated type. The lifting equipments 18 and 19 provided in the drawings are substantially identical.
Each lifting equipment is provided with a load supporting structure or turret 21 which is mounted upon the platform 14 in a manner as shown in United States Letters Patent No. 2,841,404. As disclosed in that patent, the load supporting structure 21 is mounted for rotation about a vertical axis. An extensible boom structure 22 is mounted upon the load supporting structure 21 for movement about a horizontal axis formed by the pivot shaft 23. The extensible boom structure 22 is provided with an outer boom section 26 and an inner telescoping boom section 27. Means is provided which includes a chain 28 for raising and lowering the outer end of the boom structure 22 about the horizontal axis formed by the shaft 23 and is generally of the type disclosed in United States Letters Patents No. 3,055,459 and No. 2,996,141. Means is also provided for extending and retracting inner telescoping boom section 27 with respect to the outer boom section 26 and includes a drive motor 29 which is generally of the type disclosed in United States Letters Patent No. 2,896,750.
As disclosed in United States Letters Patent No. 2,627,560 each of the lifts can be readily provided with controls which are accessible to an operator on the platform 19 for controlling the movement of the outer ends of the boom structures 22 and, if necessary, to operate the boom structures in unison. With such controls, it can be seen that the boom structures can be readily used for lifting elongate elements such as pipe, conduit and the like and keep them in a horizontal position while they are being raised and actually position them horizontally if such is required at the time they are released from the boom structures.
When it is desired to utilize the multiple boom apparatus for supporting workmen and the like, it is merely necessary to place a large scaffold or platform 31 between the outer ends of the boom structures 22. As shown in the drawings, such a large platform or scaffold 31 can consist of a horizontal bottom walkway 32. Rigid structural end members 33 are mounted upon the walkway 32 and extend therefrom in a vertical direction. The cross brace 34 interconnects the vertical members 33. The platform 31 can be connected to the outer ends of the boom structures 22 in any suitable manner. Thus, for example, the end structures 33 are releasably connected to the end of the boom structures by pins or bolts (not shown).
Means is provided for damping movement of the platform so that workmen will not he accidentally spilled therefrom and consists of damping devices 36 connected between the outer end of the boom structure and the end structures 33 of the platform. Thus, with the arrangement shown, it can be seen that the platform 31 can pivot with respect to the outer ends of the boom structures 22 so that the walkway 32 will always remain in a horizontal position as the outer ends of the boom structures are raised and lowered. In addition, it can be seen that the platform is stabilized by the damping devices 36 so that workmen will not be accidentally spilled therefrom. If necessary, and if the work is particularly hazardous, additional braces, such as braces 34, can be provided on the other side of the platform to prevent workmen from accidentally falling therefrom.
Normally, it is desirable that the workmen on the platform be able to control the positions of the boom structures 22. For that reason, a control device 41 has been provided for each of the lift equipments. These are mounted on opposite ends of the platform 31 as shown in FIGURE 1 of the drawings. The control mechanisms 41 are of a type described in United States Letters Patent No. 2,841,404.
Hydraulically controlled Outriggers 46 of a type well known to those skilled in the art are mounted on the platform 14 and are provided for stabilizing the platform 14 during use of the boom structures 22 if such is required.
The operation and use of the multiple boom apparatus may now be briefly described as follows. With the scaffolding 31 connected between the outer ends of the booms, the apparatus can be utilized for a large number of construction and maintenance jobs. For example, it can be readily used by painters to eliminate the use of ladders, rope-lowered scaffolds and the like. To use the same, it is only necessary for the painters on the walkway 32 to operate the control mechanisms 41 in unison so that boom structures would be raised and lowered, extended and retracted, and rotated at substantially the same time so that the platform will always remain on a relatively stable horizontal plane to prevent workmen from being accidentally spilled therefrom.
The appratus also can be utilized with a platform inside plants for changing lamps within a plant and doing other maintenance and construction operations which must be carried out at a substantial elevation.
When is it no longer desired to use the elongate platform 31 on the multiple boom structures 22, the platform can be removed therefrom and stowed in a suitable location.
The lifting equipments on the vehicle can then be utilized for other types of lifting operations. For example, the two boom structures could be utilized as cranes for raising very long lengths of conduit and pipe and maintaining them in a horizontal position and then placing them in a horizontal position. This can be accomplished by the use of conventional rigging secured to the end of the boom structures and tied to the pipe or other elongate elements. The boom structures then can be controlled by an operator on the platform 14 who causes movement of the boom structures in synchronism as hereinbefore described to accomplish the desired task.
Also, when an elongate workmans platform 31 is not being used, the boom structures can be provided with conventional workmans baskets 51, each of which has a control mechanism 52 mounted therein for controlling the lift. In such case, the baskets 51 are carried by a pair of arms 53 secured to the outer end of the inner boom section 27, as shown in FIGURES 2 and 3. After the large elongate platform 31 has been removed from the boom structures 22, the boom structures 22 can be stored in positions similar to those indicated in FIGURES 2 and 3 so that the vehicle can travel down the highway. When the vehicle has arrived at the desired location, the boom structures can readily be positioned in the desired locations and, if necessary, the elongate platform 31 connected thereto and the entire apparatus placed in operation.
The apparatus shown in FIGURES 2 and 3 can be utilized with the separate and individual workmans baskets 51 shown therein if so desired.
It is apparent from the foregoing that there has been provided a new and improved multiple boom apparatus which has many advantageous features for use on a variety of maintenance and in construction chores. It also is a type of apparatus which can be utilized by relatively unskilled personnel.
I claim:
1. In a multiple boom apparatus, a platform, first and second lifting equipments mounted upon the platform and spaced from each other, each of said lifting equipments having an elongate boom structure with its outer end adapted to be raised and lowered about a horizontal axis, rotated about a vertical axis and extended and retracted, controls for controlling the movement of the outer end of the boom structure and a horizontal walkway connected to the outer ends of the boom structures of the first and second lifting equipments.
2. Apparatus as in claim 1 wherein said controls for each of the lifting equipments are accessible from the walkway.
3. In a multiple boom apparatus, a self-propelled vehicle having a platform, first and second lifting equipments mounted upon the platform in spaced relationship, each of said lifting equipments including a boom structure in which the outer end of the boom structure can be raised and lowered with respect to a horizontal axis, rotated with respect to a vertical axis, and extended and retracted toward and away from the platform, and a workmans platform removably connected between the outer ends of the boom structures and movable with the outer ends of the boom structures.
4. Apparatus as in claim 3 wherein a control mechanism accessible from the platform is provided for each of the lifting equipments.
5. Apparatus as in claim 3 wherein said boom structures are of the extensible type, said lifting equipments being mounted on substantially opposite ends of the platform, said boom structures when said workmans platform is removed therefrom being movable into generally parallel horizontal and vertical planes extending longitudinally of the platform.
References Cited by the Examiner UNITED STATES PATENTS FOREIGN PATENTS 3/1960 Germany. 7/1904 Great Britain.
REINALDO P. MACHADO, Primary Examiner.

Claims (1)

1. IN A MULTIPLE BOOM APPARATUS, A PLATFORM, FIRST AND SECOND LIFTING EQUIPMENTS MOUNTED UPON THE PLATFORM AND SPACED FROM EACH OTHER, EACH OF SAID LIFTING EQUIPMENTS HAVING AN ELONGATE BOOM STRUCTURE WITH ITS OUTER END ADAPTED TO BE RAISED AND LOWERED ABOUT A HORIZONTAL AXIS, ROTATED ABOUT A VERTICAL AXIS AND EXTENDED AND RETRACTED, CONTROLS FOR CONTROLLING THE MOVEMENT OF THE OUTER END
US488688A 1965-09-20 1965-09-20 Multiple boom apparatus Expired - Lifetime US3311193A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161388A1 (en) * 1984-02-21 1985-11-21 Peter Gasparini Work platform
FR2703673A1 (en) * 1993-04-08 1994-10-14 Duarib Ets Lifting device with gondola (basket)
US10287150B1 (en) * 2018-01-06 2019-05-14 Ford Miller Holding Company, LLC Mobile platform carrying system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190416357A (en) * 1904-07-25 1905-06-15 Michael Mausshardt Outlet Swinging and Fixed Escape Galleries and Roller-floors, for Theatres, Public Halls, and the like.
US2616768A (en) * 1948-02-10 1952-11-04 Irwin G Stemm Crane supported movable selfleveling scaffold
DE1077856B (en) * 1957-05-20 1960-03-17 Emil Domes Mobile hanging frame for outside work on high-rise buildings
US3191716A (en) * 1962-12-10 1965-06-29 Telsta Corp Mobile lifting equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190416357A (en) * 1904-07-25 1905-06-15 Michael Mausshardt Outlet Swinging and Fixed Escape Galleries and Roller-floors, for Theatres, Public Halls, and the like.
US2616768A (en) * 1948-02-10 1952-11-04 Irwin G Stemm Crane supported movable selfleveling scaffold
DE1077856B (en) * 1957-05-20 1960-03-17 Emil Domes Mobile hanging frame for outside work on high-rise buildings
US3191716A (en) * 1962-12-10 1965-06-29 Telsta Corp Mobile lifting equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161388A1 (en) * 1984-02-21 1985-11-21 Peter Gasparini Work platform
FR2703673A1 (en) * 1993-04-08 1994-10-14 Duarib Ets Lifting device with gondola (basket)
US10287150B1 (en) * 2018-01-06 2019-05-14 Ford Miller Holding Company, LLC Mobile platform carrying system

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