CA2139622E - A system for use in fabricating, transporting and placing a prefabricated building unit at its placement site - Google Patents
A system for use in fabricating, transporting and placing a prefabricated building unit at its placement siteInfo
- Publication number
- CA2139622E CA2139622E CA 2139622 CA2139622A CA2139622E CA 2139622 E CA2139622 E CA 2139622E CA 2139622 CA2139622 CA 2139622 CA 2139622 A CA2139622 A CA 2139622A CA 2139622 E CA2139622 E CA 2139622E
- Authority
- CA
- Canada
- Prior art keywords
- building unit
- flatbed
- lifting
- base member
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/161—Handling units comprising at least considerable parts of two sides of a room or like enclosed space
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
There is described a method and system for fabricating, transporting and placing building units at a site. A production line is located at the site for fabrication of the building units, each unit is transported from the assembly line to a preselected foundation, and the unit is placed on the foundation. Each unit is fabricated on a flatbed and slid onto a flatbed truck. Each unit is constructed on a base member to which a lifting device is attachable to transpose the unit from the truck to the foundation.
Description
TITLE OF THE INVENTION
A SYSTEM FOR USE IN FABRICATING, TRANSPORTING AND PLACING A
PREFABRICATED BUILDING UNIT AT ITS PLACEMENT SITE.
BACKGROUND OF THE INVENTION
It is well known to fabricate a building under mass production assembly line conditions, thereafter to transport the prefabricated building unit to its building site and to lift the prefabricating building unit into place on a prepared foundation at the site.
Examples of assembly line techniques for prefabricating building units such as house structure are to be seen in United States Patent Nos. 3,805,365, 3,820,216 and 3,994,060.
Specialized units for transporting the building unit through the assembly line during fabrication are to be seen, for example, in United States Patent Nos. 3,962,773 and 4,450,617.
An example of transporting modular home sections from the fabricating assembly line to the placement site, by means of flatbed trucks, is to be seen in United States Patent No.
4,512,120.
Finally, lifting devices for use with cranes to lift the prefabricated unit and place it in its final place are to be seen, for example in United States Patent Nos. 3,800,493 and 4,501,098.
Such systems suffer from the disadvantage that the assembly line is located remote from the building site. These previous arrangements have also suffered drawbacks in that the building unit during fabrication has required a great deal of handling on the assembly :line and the systems for moving the units being fabricated though the assembly line have been complex, or (YRS/ne) 90718-2 suffered from handl ina =::9rawbac, when moving the prefabricated structure on to a truck to transport it to the building site.
Also the devices for lifting the prefabricated building units into position have been complex and somewhat difficult to use.
SUMMARY OF THE INVENTION
The present invention seeks to mitigate the drawbacks of the prior art by providing a method and system for use in fabricating, transporting and placing the building units on foundations, all. being effected on site.
According to the present invent ion there is provided a system of fabricating, transporting and placing a building unit at a site, comprising: at least one production line for fabricating a building unit having an input end and an output end and including a transport device having a flatbed, said transport device being movable from the input end to the output end of the production line through a series of workstations, said building unit being fabricated on an upper surface of said flatbt=d, said flatbed having an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit relative to said transport device; a first transport means to transport said building unit from the output end of said product: ion line to a preselected foundation, said first transport means having a flatbed with an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit thereon; a means to slide the building unit from the flatbed of said transport device when said transport device is at the = (KRS/ne) 90718-2 output: end of said production line to the flatbed of said first transport means; second transport means to transfer the transported building unit from the flatbed of said first transport means to said preselected foundation of said site.
According to a preferred feature, the system includes a base membe, upon which said building unit is erected, said base member comprising a rectangular metal frame at least two opposing sides of which are L-section, inwardly directed to provide, on said opposing sides, a marginal shelf and a marginal outer wall upstanding from said marginal shelf;
aligned cross-beam receiving brackets inwardly directed from said opposing sides; cross-beam members received in said brackets and secured to said frame; and building unit lifting lugs attached to, and projecti.m outwardly from, said rectangular frame.
Preferably the device of the system for transporting the base member during fabrication of the building unit comprises a flatbed for support Ii ng the base member; rail engaging wheels beneath the flatbed, and an anti-friction surface on the f :l at bed (such as a roller conveyor) to permit the fabricated building unit to be slid off the flatbed after completion of fabrication.
According to still a further feature of the invention, a prefabr_icalc'd hrn ....ing unit 1_i_ft ing frame is provided for attachment to the base member and preferably the lifting frame comprises a rectangular structure, crane hook attaching elements on the structure, and a plurality of building unit lifting c.:.rd, straps, or Me members on the structure, the cord or like members - 4 - 90718-1/LEH/fs having lifting lug engaging attachments. According to one preferred feature of the invention the lifting cords or like members may be of unitary configuration.
DESCRIPTION OF THE DRAWINGS
The following is a description by way of example of one preferred embodiment of the invention reference being had to the accompanying drawings in which:
Figure 1 is plan view of an assembly line for assembling prefabricated building units;
Figure 2 is a perspective sketch of the transportation device which carries the building unit through the assembly line during its fabrication;
Figure 3 is a perspective sketch of the device for transporting the prefabricated structure to the building site and the means for lifting the prefabricated unit into place on its foundations;
Figure 4 is a detail, to an enlarged scale, of the system shown in Figure 3;
Figures 5, 6, and 7 are details, to an enlarged scale, of the items circled and numbered 5, 6, and 7, in Figure 4; and Figure 8 is a schematic view of a subdivision building plan.
DESCRIPTION OF PREFERRED EMBODIMENT
Turning now to the drawings. in Figures 1 and 2 a fabricating production line 10 is a factory-like facility in which two parallel production lines, 1.1 and 12, are placed side by side.
- 5 - 90718-1/LEH/fs The production lines each include its own railway track 14, 15 extending through the assembly facility past a basic construction area 16 and then past.. a plurality of bays 18 providing storage space for light construction and finishing materials such as window frames and doors, plumbing and electrical supplies.
Running on the tracks 14 and 15 are a plurality of transporting devices 20 each comprising a flatbed 21 (see Figure 2) having a series of railway track engaging wheels 22 therebeneath and anti-friction surfaces, such as roller conveyors 24, on the upper surfaces of the flatbed.
As the devices 20 proceed from left to right, as seen in Figure 1, the building unit 30 is erected on the base member of the system, which base member will be described in more detail hereinafter with reference to Figures 4, 5 and 6. Fabrication of the building unit 30 continues throughout the production line until finally it is rolled out to a loading bay 25 on the right hand side of Figure 1. Here a means to transport the prefabricating building unit to the building site is provided in the form of a flatbed truck 26 which is dimensioned so that the building unit 30 can be slid off the roller conveyors 24 on the flatbed 21, onto the flatbed 27 of the truck 26 which itself has an anti-friction surface on top of its flatbed, which anti-friction surface may be a roller conveyor 28 similar to the roller conveyor 24.
The prefabricated unit 30 is then conveyed to the building site by the truck 26 where it is lifted into position by means of a crane 32 (see Figure 3) onto the building foundation 33. In order to provide a means by which the crane 32 can lift - 6 - 9C)718-1/LEH/fs the unit 30 and set it into place, the system of the present invention provides a lifting frame 35 (see also Figure 4). The lifting frame 35 is a rectangular structure 36 provided at its corners with crane hook attaching elements, such as eye bolts 37 which receive crane cables 34. Attached to, and depending from opposite sides of the rectangular structure 36 are a series of building unit lifting cord members 39. Lifting cord members 39 may be of any suitable configuration such as cables, or straps, or the like and the cord members terminate in lifting attachments 40 which will be described more fully hereinafter. The lifting cord members 39 are shown in Figure 4 as of unitary configuration, that is to say they are a single unit from their point of attachment to the rectangular structure 36 to the attachment elements 40, passing through prefabricated slots 41 in the roof 42 of the building unit 30. However, it is to be understood that in some forms of construction it may be desirable to split the cords above their slots 41 such as at point 45 in Figure 4, the upper part of the cord 39a being disconnectably connected at the point 45 to the lower end of the cord 39b. By having the cords 39 detachably attached in this fashion it is possible to leave the lower part of the cord 39b in place after the building unit 30 has been arranged on its placement site., Turning now to Figures 4, 5 and 6, these Figures show in more detail the base member 50 which provides the uniting feature of the system and on which the building unit 30 is assembled. The base member 50 comprises a rectangular steel frame 51 at least two opposing sides 52 of which are of inwardly directed L-section to provide on opposite sides a marginal shelf 54 and a marginal outer - 7 - 90718-1/LEFT/fs wall 55 upstanding from the shelf. Preferably all four sides of the rectangular frame are of similar inwardly directed L-section.
Lugs 56, only one of which is shown in Figure 5, upstand from the shelves 54 to receive a cross-beam 60, preferably of I-section wood. Spacer members, seen here as two plank-like wooden elements 62, rest on the shelves 54 at opposite sides of the rectangular metal frame inside the marginal outer walls 55 and carry aligned cross-member- receiving brackets 65. The cross-members 60 are positioned firmly in the brackets 65 and span the rectangular steel frame 51, as seen in Figures 5, 6 and 7. The ends of the cross-beams 60 are received in the receiving brackets 65 and a bolt 67 is passed through the lugs 56 and through holes in a pair of filler blocks 69 :Located one on each side of the I-beam 60. A
nut 68 engages the bolt 67 and is tightened to clamp the cross-beam 60 to the frame 51 in the brackets 65.
It will be understood that in Figure 5 although the frame 50 appears to be in place on the foundation with the bolt 67 and nut 68 disconnected, this is for the purposes of illustration only. Obviously the cross-beams 60 will be well secured as an early step in fabrication of the base member 50 and before the rest of the building unit 30 is assembled on the base member 50.
Building unit lifting lugs 70 are provided on the opposite sides of the rectangular metal frame 51. These lugs receive lifting lug attachment elements 40 at the ends of the straps 39.
It will be noted that when the elements 40 are hooked onto the lugs 70 the entire building unit can be lifted on its own base frame 50.
- 8 - 90718-1/LEH/fs In order to decrease any tendency for the rectangular frame 51 of the base :member 50 to be warped during assembly and transportation of the building unit, a plurality of tensioned members 72 (see Figures 4 and 7) are detachably attached by suitable means such as hooks 74 to eyes 76 fixed to the opposing sides of the frame. The members 72 extend parallel to the cross-beams 60 and are preferably provided with turnbuckles '78, or the like, whereby the tension in the member 72 can be controlled.
When the building unit 30 has been arranged on its placement site and bolted to its foundation 33, the turnbuckles 72 can be slackened and the members 70 removed for reuse.
It will be understood that although the lugs 70 have been shown of U-shape with the attachment elements 40 of hook configuration, different shapes of lug and hook could be provided to accommodate different situations.
Thus the base member 50 provides a jig upon which the fabrication of the unit 30 takes place, provides for cooperation with the transporting device 20 for ease of movement through the assembly line and transfer onto the flatbed truck 26, and provides the means whereby the lifting frame 35 can lift the building unit from the truck and deposit it on its foundation 33, thereby achieving a smooth unitary flow from fabrication through transportation, to final placement.
The plan of Figure 8 shows a land subdivision or site 80 25 parcelled into indiv:.dual building lots 82 and including a parkland area 84. Prefabricated units 30 are located each on a lot 82 which has a foundation,33. Production line 10 is erected on parkland area 84 and the service roads 86 of subdivision 80 are - 9 - 90718-1/LEH/fs used to transport each building unit 30 from the production line to a preselected lot ;92 and foundation 33. When the placement of building units 30 on lots 82 has been completed, production line 30 may be dismantled and parkland area 84 converted to its true use.
It will be seen from the layout of Figure 8 that by locating production line 10 on site 80 the time and cost problems associated with transporting the building units 30 to foundations 33 are avoided.
A SYSTEM FOR USE IN FABRICATING, TRANSPORTING AND PLACING A
PREFABRICATED BUILDING UNIT AT ITS PLACEMENT SITE.
BACKGROUND OF THE INVENTION
It is well known to fabricate a building under mass production assembly line conditions, thereafter to transport the prefabricated building unit to its building site and to lift the prefabricating building unit into place on a prepared foundation at the site.
Examples of assembly line techniques for prefabricating building units such as house structure are to be seen in United States Patent Nos. 3,805,365, 3,820,216 and 3,994,060.
Specialized units for transporting the building unit through the assembly line during fabrication are to be seen, for example, in United States Patent Nos. 3,962,773 and 4,450,617.
An example of transporting modular home sections from the fabricating assembly line to the placement site, by means of flatbed trucks, is to be seen in United States Patent No.
4,512,120.
Finally, lifting devices for use with cranes to lift the prefabricated unit and place it in its final place are to be seen, for example in United States Patent Nos. 3,800,493 and 4,501,098.
Such systems suffer from the disadvantage that the assembly line is located remote from the building site. These previous arrangements have also suffered drawbacks in that the building unit during fabrication has required a great deal of handling on the assembly :line and the systems for moving the units being fabricated though the assembly line have been complex, or (YRS/ne) 90718-2 suffered from handl ina =::9rawbac, when moving the prefabricated structure on to a truck to transport it to the building site.
Also the devices for lifting the prefabricated building units into position have been complex and somewhat difficult to use.
SUMMARY OF THE INVENTION
The present invention seeks to mitigate the drawbacks of the prior art by providing a method and system for use in fabricating, transporting and placing the building units on foundations, all. being effected on site.
According to the present invent ion there is provided a system of fabricating, transporting and placing a building unit at a site, comprising: at least one production line for fabricating a building unit having an input end and an output end and including a transport device having a flatbed, said transport device being movable from the input end to the output end of the production line through a series of workstations, said building unit being fabricated on an upper surface of said flatbt=d, said flatbed having an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit relative to said transport device; a first transport means to transport said building unit from the output end of said product: ion line to a preselected foundation, said first transport means having a flatbed with an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit thereon; a means to slide the building unit from the flatbed of said transport device when said transport device is at the = (KRS/ne) 90718-2 output: end of said production line to the flatbed of said first transport means; second transport means to transfer the transported building unit from the flatbed of said first transport means to said preselected foundation of said site.
According to a preferred feature, the system includes a base membe, upon which said building unit is erected, said base member comprising a rectangular metal frame at least two opposing sides of which are L-section, inwardly directed to provide, on said opposing sides, a marginal shelf and a marginal outer wall upstanding from said marginal shelf;
aligned cross-beam receiving brackets inwardly directed from said opposing sides; cross-beam members received in said brackets and secured to said frame; and building unit lifting lugs attached to, and projecti.m outwardly from, said rectangular frame.
Preferably the device of the system for transporting the base member during fabrication of the building unit comprises a flatbed for support Ii ng the base member; rail engaging wheels beneath the flatbed, and an anti-friction surface on the f :l at bed (such as a roller conveyor) to permit the fabricated building unit to be slid off the flatbed after completion of fabrication.
According to still a further feature of the invention, a prefabr_icalc'd hrn ....ing unit 1_i_ft ing frame is provided for attachment to the base member and preferably the lifting frame comprises a rectangular structure, crane hook attaching elements on the structure, and a plurality of building unit lifting c.:.rd, straps, or Me members on the structure, the cord or like members - 4 - 90718-1/LEH/fs having lifting lug engaging attachments. According to one preferred feature of the invention the lifting cords or like members may be of unitary configuration.
DESCRIPTION OF THE DRAWINGS
The following is a description by way of example of one preferred embodiment of the invention reference being had to the accompanying drawings in which:
Figure 1 is plan view of an assembly line for assembling prefabricated building units;
Figure 2 is a perspective sketch of the transportation device which carries the building unit through the assembly line during its fabrication;
Figure 3 is a perspective sketch of the device for transporting the prefabricated structure to the building site and the means for lifting the prefabricated unit into place on its foundations;
Figure 4 is a detail, to an enlarged scale, of the system shown in Figure 3;
Figures 5, 6, and 7 are details, to an enlarged scale, of the items circled and numbered 5, 6, and 7, in Figure 4; and Figure 8 is a schematic view of a subdivision building plan.
DESCRIPTION OF PREFERRED EMBODIMENT
Turning now to the drawings. in Figures 1 and 2 a fabricating production line 10 is a factory-like facility in which two parallel production lines, 1.1 and 12, are placed side by side.
- 5 - 90718-1/LEH/fs The production lines each include its own railway track 14, 15 extending through the assembly facility past a basic construction area 16 and then past.. a plurality of bays 18 providing storage space for light construction and finishing materials such as window frames and doors, plumbing and electrical supplies.
Running on the tracks 14 and 15 are a plurality of transporting devices 20 each comprising a flatbed 21 (see Figure 2) having a series of railway track engaging wheels 22 therebeneath and anti-friction surfaces, such as roller conveyors 24, on the upper surfaces of the flatbed.
As the devices 20 proceed from left to right, as seen in Figure 1, the building unit 30 is erected on the base member of the system, which base member will be described in more detail hereinafter with reference to Figures 4, 5 and 6. Fabrication of the building unit 30 continues throughout the production line until finally it is rolled out to a loading bay 25 on the right hand side of Figure 1. Here a means to transport the prefabricating building unit to the building site is provided in the form of a flatbed truck 26 which is dimensioned so that the building unit 30 can be slid off the roller conveyors 24 on the flatbed 21, onto the flatbed 27 of the truck 26 which itself has an anti-friction surface on top of its flatbed, which anti-friction surface may be a roller conveyor 28 similar to the roller conveyor 24.
The prefabricated unit 30 is then conveyed to the building site by the truck 26 where it is lifted into position by means of a crane 32 (see Figure 3) onto the building foundation 33. In order to provide a means by which the crane 32 can lift - 6 - 9C)718-1/LEH/fs the unit 30 and set it into place, the system of the present invention provides a lifting frame 35 (see also Figure 4). The lifting frame 35 is a rectangular structure 36 provided at its corners with crane hook attaching elements, such as eye bolts 37 which receive crane cables 34. Attached to, and depending from opposite sides of the rectangular structure 36 are a series of building unit lifting cord members 39. Lifting cord members 39 may be of any suitable configuration such as cables, or straps, or the like and the cord members terminate in lifting attachments 40 which will be described more fully hereinafter. The lifting cord members 39 are shown in Figure 4 as of unitary configuration, that is to say they are a single unit from their point of attachment to the rectangular structure 36 to the attachment elements 40, passing through prefabricated slots 41 in the roof 42 of the building unit 30. However, it is to be understood that in some forms of construction it may be desirable to split the cords above their slots 41 such as at point 45 in Figure 4, the upper part of the cord 39a being disconnectably connected at the point 45 to the lower end of the cord 39b. By having the cords 39 detachably attached in this fashion it is possible to leave the lower part of the cord 39b in place after the building unit 30 has been arranged on its placement site., Turning now to Figures 4, 5 and 6, these Figures show in more detail the base member 50 which provides the uniting feature of the system and on which the building unit 30 is assembled. The base member 50 comprises a rectangular steel frame 51 at least two opposing sides 52 of which are of inwardly directed L-section to provide on opposite sides a marginal shelf 54 and a marginal outer - 7 - 90718-1/LEFT/fs wall 55 upstanding from the shelf. Preferably all four sides of the rectangular frame are of similar inwardly directed L-section.
Lugs 56, only one of which is shown in Figure 5, upstand from the shelves 54 to receive a cross-beam 60, preferably of I-section wood. Spacer members, seen here as two plank-like wooden elements 62, rest on the shelves 54 at opposite sides of the rectangular metal frame inside the marginal outer walls 55 and carry aligned cross-member- receiving brackets 65. The cross-members 60 are positioned firmly in the brackets 65 and span the rectangular steel frame 51, as seen in Figures 5, 6 and 7. The ends of the cross-beams 60 are received in the receiving brackets 65 and a bolt 67 is passed through the lugs 56 and through holes in a pair of filler blocks 69 :Located one on each side of the I-beam 60. A
nut 68 engages the bolt 67 and is tightened to clamp the cross-beam 60 to the frame 51 in the brackets 65.
It will be understood that in Figure 5 although the frame 50 appears to be in place on the foundation with the bolt 67 and nut 68 disconnected, this is for the purposes of illustration only. Obviously the cross-beams 60 will be well secured as an early step in fabrication of the base member 50 and before the rest of the building unit 30 is assembled on the base member 50.
Building unit lifting lugs 70 are provided on the opposite sides of the rectangular metal frame 51. These lugs receive lifting lug attachment elements 40 at the ends of the straps 39.
It will be noted that when the elements 40 are hooked onto the lugs 70 the entire building unit can be lifted on its own base frame 50.
- 8 - 90718-1/LEH/fs In order to decrease any tendency for the rectangular frame 51 of the base :member 50 to be warped during assembly and transportation of the building unit, a plurality of tensioned members 72 (see Figures 4 and 7) are detachably attached by suitable means such as hooks 74 to eyes 76 fixed to the opposing sides of the frame. The members 72 extend parallel to the cross-beams 60 and are preferably provided with turnbuckles '78, or the like, whereby the tension in the member 72 can be controlled.
When the building unit 30 has been arranged on its placement site and bolted to its foundation 33, the turnbuckles 72 can be slackened and the members 70 removed for reuse.
It will be understood that although the lugs 70 have been shown of U-shape with the attachment elements 40 of hook configuration, different shapes of lug and hook could be provided to accommodate different situations.
Thus the base member 50 provides a jig upon which the fabrication of the unit 30 takes place, provides for cooperation with the transporting device 20 for ease of movement through the assembly line and transfer onto the flatbed truck 26, and provides the means whereby the lifting frame 35 can lift the building unit from the truck and deposit it on its foundation 33, thereby achieving a smooth unitary flow from fabrication through transportation, to final placement.
The plan of Figure 8 shows a land subdivision or site 80 25 parcelled into indiv:.dual building lots 82 and including a parkland area 84. Prefabricated units 30 are located each on a lot 82 which has a foundation,33. Production line 10 is erected on parkland area 84 and the service roads 86 of subdivision 80 are - 9 - 90718-1/LEH/fs used to transport each building unit 30 from the production line to a preselected lot ;92 and foundation 33. When the placement of building units 30 on lots 82 has been completed, production line 30 may be dismantled and parkland area 84 converted to its true use.
It will be seen from the layout of Figure 8 that by locating production line 10 on site 80 the time and cost problems associated with transporting the building units 30 to foundations 33 are avoided.
Claims (39)
1. A system of fabricating, transporting, and placing a building unit at a site, comprising:
at least one production line for fabricating a building unit having an input end and an output end and including a transport device having a flatbed, said transport device being movable from the input end to the output end of the production line through a series of workstations, said building unit being fabricated on an upper surface of said flatbed, said flatbed having an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit relative to said transport device;
a first transport means to transport said building unit from the output end of said production line to a preselected foundation, said first transport means having a flatbed with an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit thereon;
a means to slide the building unit from the flatbed of said transport device when said transport device is at the output end of said production line to the flatbed of said first transport means;
a second transport means to transfer the transported building unit from the flatbed of said first transport means to said preselected foundation of said site.
at least one production line for fabricating a building unit having an input end and an output end and including a transport device having a flatbed, said transport device being movable from the input end to the output end of the production line through a series of workstations, said building unit being fabricated on an upper surface of said flatbed, said flatbed having an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit relative to said transport device;
a first transport means to transport said building unit from the output end of said production line to a preselected foundation, said first transport means having a flatbed with an anti-friction surface on the upper surface thereof for permitting sliding movement of said building unit thereon;
a means to slide the building unit from the flatbed of said transport device when said transport device is at the output end of said production line to the flatbed of said first transport means;
a second transport means to transfer the transported building unit from the flatbed of said first transport means to said preselected foundation of said site.
2. A system as claimed in claim 1 wherein said transport device has wheels engaging and movable along a track positioned and running from said input end to said output end.
3. A system as claimed in claim 1 wherein said anti-friction surface on the upper surface of the flatbed of said first transport means comprises a plurality of roller conveyors.
4. A system as claimed in claim 1 wherein said production line is located at a site.
5. A system as claimed in claim 1 wherein said production line may be readily dismantled.
6. A system as claimed in claim 1 comprising a pair of production lines orientated generally parallel to one another.
7. A system as claimed in claim 1 wherein said first transport means comprises a road transport device.
8. A system as claimed in claim 1 which system includes a base member upon which said building unit is erected, said base member comprising a rectangular metal frame at least two opposing sides of which are L-section, inwardly directed to provide, on said opposing sides, a marginal shelf and a marginal outer wall upstanding from said marginal shelf;
aligned cross-beam receiving brackets inwardly directed from said opposing sides; cross-beam members received in said brackets and secured to said frame and building unit lifting lugs attached to, and projecting outwardly from, said rectangular frame.
aligned cross-beam receiving brackets inwardly directed from said opposing sides; cross-beam members received in said brackets and secured to said frame and building unit lifting lugs attached to, and projecting outwardly from, said rectangular frame.
9. A system as claimed in claim 8 in which all four sides of said rectangular metal frame are of inwardly directed L-section.
10. A system as claimed in claim 8 in which tensioned members extend parallel to said cross-beam members and are detachably attached to said opposing sides of said frame.
11. A system as claimed in claim 10 in which said tensioned members are provided with turnbuckles to control the tension in said tensioned members.
12. A system as claimed in claim 8 in which spacer members are positioned along said marginal shelves within said marginal outer walls and carry said cross-beam receiving brackets.
13. A system as claimed in claim 12 in which said cross-beams are secured to said marginal shelves.
14. A system as claimed in claim 13 in which said marginal shelves have attachment lugs upstanding therefrom to receive securing bolts for said cross-beams.
15. A system as claimed in claim 14 in which said cross-beams are I-section beams.
16. A system as claimed in claim 7 including a transport device for transporting said base member during fabrication of said building unit, said transport device having a flatbed for supporting said base member; rail engaging wheels beneath said flatbed, and an anti-friction surface on said flatbed to permit the fabricated building unit to be slid off said flatbed after completion.
17. A system as claimed in claim 15 in which said anti-friction surface is a roller conveyor.
18. A system further including means to transport said prefabricated building unit as claimed in claim 16, comprising a flatbed truck provided with an anti-friction surface and dimensioned to receive said building unit when slid off said transport device.
19. A system as claimed in claim 8 including a prefabricated building unit lifting frame for attachment to said base member which lifting frame comprises a rectangular structure, crane hook attaching elements on said structure and a plurality of building unit lifting cord members depending from said structure, said cord members having attachments for engaging said lifting lugs.
20. A system as claimed in claim 19 in which said lifting cord members are of unitary configuration.
21. A method of fabricating, transporting and placing building units at a site, comprising the steps of:
locating a production line at the site for the fabrication of the building units;
fabricating each building unit integrally with a base member, said base member having a plurality of outwardly extending projections;
transporting each building unit from the assembly line to a preselected foundation; and lifting the transported building unit onto the foundation by applying a lifting force at said projections.
locating a production line at the site for the fabrication of the building units;
fabricating each building unit integrally with a base member, said base member having a plurality of outwardly extending projections;
transporting each building unit from the assembly line to a preselected foundation; and lifting the transported building unit onto the foundation by applying a lifting force at said projections.
22. A method as claimed in claim 21 in which each building unit is fabricated on a movable flatbed and slidable therefrom at the output end of the assembly line onto road transportation means.
23. A system of fabricating, transporting and placing building units at a site, comprising:
a production line constructed at the site for fabricating the building units, said production line including a plurality of movable flatbeds, the building unit being fabricated one on each of the flatbeds;
each building unit including a base member fabricated integrally therewith, said base member having a plurality of outwardly extending projections;
means to transport each building unit from the assembly line to a preselected foundation; and a lifter for applying a lifting force to projections of said base frame of said building unit to lift the transported unit onto the foundation.
a production line constructed at the site for fabricating the building units, said production line including a plurality of movable flatbeds, the building unit being fabricated one on each of the flatbeds;
each building unit including a base member fabricated integrally therewith, said base member having a plurality of outwardly extending projections;
means to transport each building unit from the assembly line to a preselected foundation; and a lifter for applying a lifting force to projections of said base frame of said building unit to lift the transported unit onto the foundation.
24. A system as claimed in claim 23 in which the movable flatbeds have rollers on their upper surface so that building units are slidable therefrom at the output end of the assembly line onto said means to transport.
25. A system as claimed in claim 24 in which the means to transport comprises a truck having a flatbed with a plurality of roller conveyors mounted on the upper surface thereof.
26. A system for use in fabricating, transporting and placing a building unit at a site for said building unit which system includes a base member for integral fabrication into the building unit, said base member comprising a rectangular metal frame and building unit lifting lugs attached to, and projecting outwardly from, said rectangular frame, said lifting lugs for use in lifting the building unit onto a foundation by applying a lifting force at said lugs.
27. The system of claim 26 wherein at least two opposing sides of said rectangular frame are L-section, inwardly directed to provide, on said opposing sides, a marginal shelf and a marginal outer wall upstanding therefrom and wherein said base further comprises aligned cross-beam receiving brackets inwardly directed from said opposing sides and cross-beams received in said brackets and secured to said frame.
28. The system as claimed in claim 27 in which all four sides of said rectangular metal frame are of inwardly directed L-section.
29. The system as claimed in claim 27 in which tensioned members extend parallel to said cross-beam members and are detachably attached to said opposing sides of said frame.
30. The system as claimed in claim 29 in which said tensioned members are provided with turnbuckles to control the tension in said tensioned members.
31. The system as claimed in claim 27 in which spacer members are positioned along said marginal shelves within said marginal outer walls and carry said cross-beam receiving brackets.
32. The system as claimed in claim 31 in which said cross-beams are secured to said marginal shelves.
33. The system as claimed in claim 32 in which said marginal shelves have attachment lugs upstanding therefrom to receive securing bolts for said cross-beams.
34. The system as claimed in claim 33 in which said cross-beams are I-section beams.
35. A system as claimed in claim 26 including a device for transporting said base member during fabrication of said building unit comprising a flatbed for supporting said base member; rail engaging wheels beneath said flatbed, and an anti-friction surface on said flatbed to permit the fabricated building unit to be slid off said flatbed after completion.
36. A system as claimed in claim 35 in which said anti-friction surface is a roller conveyor.
37. A system as claimed in claim 35, comprising a flatbed truck provided with an anti-friction surface and dimensioned to receive said building unit when slid off said device.
38. A system as claimed in claim 26 including a prefabricated building unit lifting frame for attachment to said base member which lifting frame comprises a rectangular structure, crane hook attaching elements on said structure and a plurality of building unit lifting cord members depending from said structure, said cord members having attachments for engaging said lifting lugs.
39. A system as claimed in claim 38 in which said lifting cord members are of unitary configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2139622 CA2139622E (en) | 1995-01-05 | 1995-01-05 | A system for use in fabricating, transporting and placing a prefabricated building unit at its placement site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2139622 CA2139622E (en) | 1995-01-05 | 1995-01-05 | A system for use in fabricating, transporting and placing a prefabricated building unit at its placement site |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| CA2139622A1 CA2139622A1 (en) | 1996-07-06 |
| CA2139622C CA2139622C (en) | 1999-05-25 |
| CA2139622E true CA2139622E (en) | 2011-12-20 |
Family
ID=4154985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2139622 Expired - Lifetime CA2139622E (en) | 1995-01-05 | 1995-01-05 | A system for use in fabricating, transporting and placing a prefabricated building unit at its placement site |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2139622E (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7832087B2 (en) | 2006-10-11 | 2010-11-16 | The Mattamy Corporation | Housing manufacturing system |
| CN113738132A (en) * | 2021-08-17 | 2021-12-03 | 中国建筑第二工程局有限公司 | Building prefabricated slab positioning device and using method |
-
1995
- 1995-01-05 CA CA 2139622 patent/CA2139622E/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2139622A1 (en) | 1996-07-06 |
| CA2139622C (en) | 1999-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| NARE | Reissued | ||
| MKEX | Expiry |
Effective date: 20150105 |