JP2520780B2 - Landing platform and elevated protection for construction sites - Google Patents

Description

TECHNICAL FIELD The present invention relates to a loading platform and a waste chute used in building construction, in particular in the construction of tall buildings.

BACKGROUND ART In the construction of high-rise buildings, loading platforms are used for feeding and unloading material from each floor under construction. These loading platforms are used in connection with cranes, which have lift cables to deliver material to and out of the landing platform.

Known landing platforms consist of a pair of parallel beams in the same plane. The beam extends outward from the floor of the building under construction. The inner ends of the beam are engaged by struts to secure the beam in place. There is a floor between the beams and there are safety rails around the front edge of the platform.

Landing platforms have been used in connection with cranes that are remote with respect to the landing platform. This is especially necessary where the landing platforms are vertically aligned and the crane must approach each forward end of the platforms.

These landing platforms have the disadvantage of being difficult to install due to their size and weight. Landing platforms also occupy a considerable volume and are therefore expensive to transport. Yet another disadvantage is that it requires a landing platform of some size. Therefore, it is necessary to manufacture and store several sizes.

Traditionally, the beam of a landing platform is clamped in place by "posts" that extend between the beam and the elevated structure. These struts are difficult and time consuming to install.

Another disadvantage of known landing platforms is the limitation on the load that the landing platforms will experience.

When a crane is used on a building construction site, there is always the danger of debris and other items falling from above. This is particularly relevant for the safety of the driver of the vehicle being loaded or unloaded by the crane and of the vehicle itself.

In rain or at high temperatures, the above cranes may remain unworked because the vehicle being loaded and unloaded and / or loaded holds or removes items from the crane cable. Because he goes out with the person.

In addition to the landing platform, waste is removed from the floor under construction through a waste chute.
These shoots are separate from other needs and are usually located outside the building or in cut-outs on the floor. This hinders the final finish of the building and is more costly.

OBJECT OF THE INVENTION The object of the invention is to overcome or substantially improve the abovementioned disadvantages.

DISCLOSURE OF THE INVENTION The present invention includes a pair of parallel beams in the same plane; a plurality of brace members extending between and fixed to the beams; a floor panel supported on the brace members; and A foldable, comprising two side panels pivotable to the beam, movable from an overall upright position extending generally vertically to the floor panel and a folder carrying position located near the floor panel; Disclose landing platform.

The invention includes a pair of parallel beams on the same plane; a platform portion supported on the beam near its ends; a pair of beams extending from the beam to an elevated structure to secure the beam in place. An elongated strut member; and a pivot means for pivotally supporting each strut member with an associated one of the beams, the pivot means moving the strut member from a position spaced laterally of the beam to a position spaced above the beam. The strut member includes a pivoting means which allows pivotal movement of the support member about a generally horizontal axis extending transversely of the associated beam and associated beam to enable the strut member to generally move into the beam. A landing platform comprising pivot means adapted to be pivotable from a parallel position to a position extending upwardly therefrom.

The invention is also a plurality of pairs of parallel beams in the same plane, each pair extending horizontally outwardly from an individual floor of the building; supported on each pair of beams. A floor movable from an outward position with respect to it to an inward position with respect to the building; a vertically extending beam supporting the outward ends of a horizontal beam; and supported on a vertical beam Landing platform assembly including: a crane means operable to carry a load from a position outwardly spaced from the vertical beam to a position above the floor when positioned outwardly with respect to the building; Disclose the body.

The invention also relates to a support frame; a generally horizontal seat member supported on the frame, under which the vehicle or an operator may be located and protected by the seat member, wherein the cable A sheet member having an opening therethrough; and a cover extending over the opening, the cover having a slot extending inwardly from an edge of the cover, through which a crane cable can pass. Discloses an elevated protector for use with a crane including a cover movably supported to follow the movement of the cable.

The invention also relates to a pair of beams which are adapted to be attached to a building so as to extend outward from the building and are parallel in the same plane; a plurality of beams extending between the beams and fixed to the beams. A brace member; a floor panel including a hole through which waste material is fed and supported on the brace; supported by one of the beams, located on the side of the landing platform and extending downwardly therefrom A vertically extending duct; and a feed chute extending from the hole to the duct, such that waste material sent to the hole is advanced along the feed chute so as to be sent inside the duct. Disclosed is a combination of a landing platform including a feeding chute; and a waste chute.

The invention further includes a pair of parallel beams in the same plane; track means supported on each beam and extending longitudinally of each beam; and between the beams extending on the track means. A floor panel movably supported and adapted to move horizontally in a longitudinal direction parallel to the beam from an outward position to an inward position with respect to the building that will support the landing platform; Disclose landing platform.

DESCRIPTION OF THE PREFERRED EMBODIMENT In Figures 1-14 of the accompanying drawings, a foldable landing platform 10 having a roof assembly 11 is schematically illustrated.

Landing platform 10 consists of a pair of parallel "I" beams 12 in the same plane. Each beam 12
Consists of upper and lower tubular members 13 connected by a web 14. A brace 15 mounted on the member 13 and fixed by bolts 16 extends between the beams 12. A floor panel 17 is mounted on the brace 15. A side panel 18 is fixed to the beam 12, and the side panel 18 can be pivoted from an upright working position extending generally perpendicular to the floor panel 17 to a folding and carrying position located near the floor panel 17. In this particular example, the side panel 18
Are attached directly to the beam 12, and more specifically to the web 14. However, it should be appreciated that the side panel 18 can be secured to the beam 12 by being pivotally attached to the floor panel 17.

Side panel 18 as best shown in FIG.
Is composed of a panel member 19 fixed to a frame 20. The frame 20 includes an eyelet 21 that engages an eyelet 22 fixed to the beam 12. Bolts 24 extend through side panel 18 to engage member 13 to maintain panel 18 in an upright position. Pivot pin 23 is panel 19
Note that it is separated from the general aspect of.

The front end of each side panel 18 has a hinge assembly 25 to receive a pivot pin 26, which pivotally mounts a door 27 to the side panel 18.

A kick board 28 extends between the front ends of the beams 12, which prevents material from falling from the front end of the platform 10.

The side panel 18 has eyelets that engage the pins 30 of the roof assembly 11 to secure the roof assembly 11 in place.
29 are provided. The roof assembly 11 includes side panels 31 and roof panels 32. The side panel 31 is pivotally attached to the roof panel 32 so that it can be folded into the transport position as best seen in FIG. Roof panel 32
It has a reinforced slot 33 that allows a crane cable to pass through the roof panel 32.

The beam 12 is provided with hooks or eyelets 34 that can be used to raise the landing platform into position.

It should be appreciated that various length braces 15 and floor panels 17 can be used to vary the width of the landing platform 10. In such a case, different length kick panels 28 as well as different length doors 27 are required. Further, the beam 12 may vary in length and size to accommodate differences in actual requirements such as expected weight to be received on the landing platform 10.

A landing platform 30 is schematically illustrated in Figures 16-26 of the accompanying drawings.

The landing platform 30 comprises a pair of "I" beams 32 that are generally parallel, coextensive, and transversely spaced. Each beam 32 comprises an upper and lower flange 33 connected by a web 34. A brace 35 mounted on the flange 13 and fixed by bolts extends between the beams 32. A floor panel 37, preferably made of sheet metal, rests on the brace 35.

A side panel 38 is fixed to the beam 32, and the side panel 38 can be pivoted from an upright working position that extends generally perpendicular to the floor panel 37 to a folding and carrying position located near the floor panel 37. In this particular embodiment, the side panel 38 is attached directly to the beam 32, and more specifically to the web 34 by the pivot 16.
However, it should be appreciated that the side panel 38 can be secured to the beam 32 by being pivotally attached to the floor panel 37.

Side panel 38, as best shown in FIG.
Consists of a panel member 39 fixed to a frame 40. Brace 41 Beam through fixed bottom flange 42
A brace 41 bolted to 32 is fixed to the rear of panel 39.

The front end of each side panel 38 has a hinge assembly to receive the pivot pin, which is the side panel.
The door 47 is pivotally attached to the 38.

A pair of strut members 43 and 44 are fixed to each beam 32, and the strut members 43 and 44 extend generally upward and are positioned between the web 33 from an upright position perpendicular to the beams 32. Can be pivoted to a folded shape. In the extended work up position, the strut members 43 and 44 engage the adjustable jack 45 which causes the jack 45 to engage the landing platform 30.
Engage with the floor or structure above. The adjustable jack has a strut member 43 to secure the beam 32 in place.
Apply compressive force to and 44.

The strut members 43 and 44 are pivotally attached to the associated beam 32 by means of pivot assemblies 46 and 48. Each pivot assembly 46 and 48 has a sleeve 49 through which the pivot pin 50 extends. The other end of the pin 50, one end of which serves as a stop 51, has a flange 52 extending in the radial direction,
It is attached to the associated strut members 43 and 44. Each strut member 43 and 44 is a bottom flange through which the bolt 54 passes.
The column members 43 and 44 are fixed to the flange 33 by including 53.
The pin 50 associated with the strut member 43 is located lower than the pin 50 associated with the strut member 44. This allows the strut members 43 and 44 to be folded into a position such that they are located above the strut member 44 in the retracted position. To move the strut members 43 and 44 between their folded and upright configurations requires the strut members 43 and 44 to move in a direction parallel to the pins 50. The strut members 43 and 44 can then pivot between a general horizontal orientation and a general vertical orientation.

The side panel 38 is fixed to the column member 44 by means of bolts. This then allows the side panel 38 to act on the beam 32 as a stiffener. This increases the load holding capacity of the landing platform 30.

The above-described preferred embodiment of the present invention is platform 30
Has the advantage that it can be folded into a generally flat shape. This facilitates stacking and transporting the platforms 30. A pillar member pivotally attached to the beam 32
Having 43 and 44 and cypanel 38 allows the platform 30 to be raised relatively quickly and easily.

It is also convenient to provide the flange 33 with "male" and "female" couplings that facilitate stacking.

27-31 schematically show a landing platform 60 which is a modification of the platform 30 of FIGS. 16-26. In this particular example, the side panel
38 is pivotally attached to the floor panel 37 (Figs. 27 to 31).
Also in this particular embodiment, floor panel 37 is beam 32
It is attached to a pair of supports 61 that are pivotally attached to. Thus, the assembly of door 47, side panel 38, floor panel 37 and support 61 can be pivoted to a position that extends generally perpendicular to beam 32. This particular position is number 29
And Figure 31. In this particular position, the platform 60 prepares the crane to deliver the article to the platform 30.

As an alternative to the embodiment shown in FIGS. 27-31, floor panel 37 may be mounted to frame 62 as best seen in FIGS. In this particular embodiment, a frame 62 is mounted on the wheels to allow movement in the direction of arrow 63. Therefore, the floor panel 37 can be moved to the retracted position again, allowing the crane to move the article. In this particular embodiment, side panel 38 and door 47 may remain attached to beam 32. Wheels or rollers engage the nails secured to each of the beams 32.

The embodiment of Figures 27-33 has the advantage that a series of landing platforms can be vertically aligned.

34 to 38, the elevated protective body 70 is schematically shown. Elevated guards consist of a series of coplanar beams 71
Is included. The column member 72 extends upward from the beam 71 and fixes the beam at a predetermined position. A floor panel 73 extends between the beams 70, and an inclined edge panel 74 is provided at the front end of the elevated protection body 70. The edge panel 74 is supported by an angled panel 75 fixed to the web 76 of the beam 71. This particular overpass guard 70 is strong enough to support the scaffold 77 directly supporting it.

In FIG. 38, the landing platform 80 is shown schematically. Landing platform 80 includes a narrow portion 81 and an enlarged portion 82. Narrow part 81
Is sized to pass between the vertical portions 83 of the scaffold assembly 84. Landing platform 80 is side panel 85
have.

The embodiment of Figure 39 has the advantage of providing a large landing platform that is conventionally available.

A landing platform assembly 90 is schematically illustrated in Figures 40-43 of the accompanying drawings. The assembly 90 is adapted for use in constructing or repairing a building 91 having a floor 92. The floor has an outer edge 93.

Landing platform assembly 90 includes a plurality of vertically aligned landing platforms 93, each landing platform
93 consists of a pair of parallel "I" beams 94 in the same plane. The beam 94 has its inner end supported on the floor 92 and may be held in place by "posts" if desired.

A moveable floor 95 movably supported by each pair of beams 94 is moveable between an inwardly retracted position with respect to the building and an outwardly outwardly spaced position of floor 92. .

Horizontal beam 91 is supported by vertical beam 96 so that the landing platform is free standing.

An additional horizontal beam 97 that extends across the upper end of the vertical beam 96 includes a horizontal rail 97 and a hoist 100.
It supports a monorail crane assembly 98 consisting of.

Hoist 100 may be used to convey building material via material receiving tray 101. Alternatively,
The hoist 100 may be combined with the lift compartment 103. Compartment 103 engages a vertical member 96 or a rail fixed to it, thereby governing its vertical movement.

Beam 94 with side panel 104 together with chute assembly 105
Attached to. The chute assembly 105 includes a chute portion 106 that is vertically stacked and in communication with a lower chute portion 107 through which material is delivered to a bin 108. Each shoot part 106
Has a feed chute portion 109 communicating with an opening formed in the floor 105. The opening can be closed via a pivotally attached door panel.

Once the material has been delivered to one of the floors 94, the floor above it may be retracted and the crane may move inwardly with respect to the building to place the material above the floor located in its outward position.

The preferred embodiment described above offers the advantage of not requiring a mobile crane. Using a crane 98 with a moveable floor 95 overcomes the need for a mobile crane.

In Figures 44-48 of the accompanying drawings, an elevated guard 110 is schematically illustrated. Elevated guard 110 includes a sheet member 111 that is preferably formed from a rope. Sheet member 1
11 protects the workers and vehicles located under the protection pair 110. Protect Vs 110 is a generally rectangular side frame 1
Contains 12

The seat member 11 is formed with an opening 113 through which a crane cable 114 extends to engage or disengage an object 115 to be lifted by the crane. The opening 113 extends inward from the edge of the sheet member 11.

A cover 116 movably attached to the seat member 111.
Covers the opening 113. If desired, it may be ensured that a guide or track limits the movement of the cover 116 and extends to cover the opening 113. Slot 1 in cover 116
A cable 114 extends through the slot 117 provided with 17. The slot 117 extends inwardly from the edge of the cover 116. Slot 117 has an enlarged entrance portion 118 to facilitate the location of cable 114 within slot 17.

If the object 115 is to mate with or disengage from the cable 114, the operator moves the cable from a remote location into the slot 117. The object 115 is then engaged or disengaged and the cable 114 is again moved from within the slot 117 to a remote position where the cable 114 can be raised without entanglement with the elevated protection 110.

In FIG. 46, an elevated protector 110 is fixed on a plurality of horizontal beams 119 which are fixed in position by means of columns 120. As can be seen, the protector 110 is located at a height sufficient to avoid the vehicle 121.

In FIG. 48, the protector 110 is supported by the frame 122 including the vertical member 123 and the horizontal member 124. Element
123 supports protector 110 at a position that causes vehicle 125 to be positioned below protector 110.

The combined landing platform 130 and waste chute 131 is shown schematically in Figures 49-52 of the accompanying drawings. Landing platform 130
It includes a pair of parallel, generally coextensive, and horizontally extending I-beams 132, which are either attached to the building or extend outwardly therefrom. A support member 133 and a floor panel 134 extend between the beams 132. The floor panel 134 has a ramp portion 135.

A hole 136 is formed in the floor panel 134 which is covered by a removable or pivotally attached cover plate 137. A removable and / or pivotally attached grid 138 extends across hole 136.

A side panel 139 and a front gate 140 are supported on the beam 132.

The chute 131 supported by the beam 132 includes a vertically extending waste duct 141 having a first pair of upper hooks 142 that engage on the side panels 139. Duct 141
Has a second pair of hooks 143 that may have protrusions that engage into recesses formed in beam 142. Duct 1
A feed chute 144 extends laterally outwardly from 41 to the hole 16 so that waste material fed through the hole 136 is fed into the duct 141 via the feed chute 144.

Duct 141 has upper and lower flanges 145 and 145.
And the flange 146 is adapted to securely engage a tapered duct portion 147 leading to the next duct 141 mounted on the landing platform 130 immediately below. This is best seen in Figure 51.

The preferred embodiment described above has the advantage that the waste duct 131 does not require its own support structure and is simply attached to the landing platform 130. Furthermore, since the waste chute 131 is located outside the building, it allows the final finishing of the building without interrupting normal construction work.

When installing a landing platform as described above, the ends of the beam (12 in Figure 1) pass along the concrete floor that will support the platform. This has the effect of impacting the crane and damaging the concrete floor. To alleviate this problem, the ends of the beam are provided with rollers or curved plates. As shown in FIG. 52, a flange that rotatably supports the roller 151 is provided at an end portion of the beam 12 that is away from the door 27. Roller 151 beam 12
Are only positioned to engage the concrete floor when tilted. During installation, beam 12 is roller 151
And is sloped to maintain contact between the concrete floor.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a landing platform provided with a roof assembly. 2 is a schematic perspective view of the landing platform of FIG. 3 is a schematic perspective view of the folding platform of FIG. 1 in a partially folded configuration. FIG. 4 is a schematic end view of the platform of FIG. 5 is a schematic end view of the placket foam of FIG. 1 in a folded configuration. FIG. 6 is a schematic perspective view of a roof assembly used with the platform of FIG. FIG. 7 is a schematic perspective view of the roof assembly of FIG. 6 in a partially folded configuration. 8 is a schematic end view of the roof assembly of FIG. 6 in a folded configuration. FIG. 9 is a schematic plan view of the landing platform of FIG. FIG. 10 is a schematic side view of the landing platform of FIG. 11 is a schematic enlarged end view of a portion of the landing platform of FIG. FIG. 12 is a schematic partial exploded view of the landing platform of FIG. FIG. 13 is a schematic plan view of the roof assembly of FIG. FIG. 14 is a schematic side view of the roof assembly of FIG. Figure 15 is a schematic end view of the roof assembly seen in Figure 14. FIG. 16 is a schematic perspective view of the landing platform. FIG. 17 is a schematic perspective view of the landing platform of FIG. FIG. 18 is a schematic perspective view of the landing platform of FIG. 16 in a partially removed configuration. 19 is a schematic perspective view of the landing platform of FIG. 16 with fixed stanchions fixed in place. 20 is a schematic side view of the upper end of the column of FIG. FIG. 21 is a schematic side view of the lower end of the column of FIG. FIG. 22 is a schematic end view of a pivot assembly for use with the struts shown in FIG. 23 is a schematic side view of the support beam of the landing platform of FIG. 16 with the fixed struts folded. FIG. 24 is a schematic cross-sectional view of the pivot assembly of FIG. 25 is a schematic perspective view of the pivot assembly of FIG. 24. FIG. 26 is a schematic side view of the respective lower portion of the struts associated with the respective support beams of the landing platform. Figure 27 is a schematic perspective view of a modification of the platform of Figure 16. Figure 28 is a schematic perspective view of the platform of Figure 27 in a partially folded configuration. FIG. 29 is a schematic perspective view of the platform of FIG. 27 in a working configuration. FIG. 30 is a schematic side view of the platform shown in FIG. 27. FIG. 31 is a schematic side view of the landing platform shown in FIG. 29. 32 is a schematic perspective view of another modification of the landing platform of FIG. 16. FIG. 33 is a schematic perspective view of the landing platform of FIG. 32 in another working task. FIG. 34 is a schematic perspective view of an elevated protector. FIG. 35 is a schematic perspective view of the elevated protector of FIG. 34 to which a scaffold is applied. FIG. 36 is a schematic side view of the scaffold and protector of FIG. 35. FIG. 37 is a schematic side view of an end portion of the elevated protection body. 38 is a schematic partially exploded perspective view of the end portion of FIG. 37. FIG. FIG. 39 is a schematic perspective view of an enlarged landing platform. FIG. 40 is a schematic perspective view of the landing platform before standing up. FIG. 41 is a schematic perspective view of a modification of the landing platform of FIG. 40. 42 is a schematic side view of a landing platform as shown in FIG. 40. FIG. 43 is a schematic side view of a landing platform as shown in FIG. 41. FIG. 44 is a schematic perspective view of an elevated protector and a crane cable used therewith. FIG. 45 is a schematic perspective view of the protector of FIG. 44. FIG. 46 is a schematic perspective view of a construction site using the elevated protection body of FIG. 44. FIG. 47 is a schematic perspective view of another support for the elevated guard of FIG. 44. FIG. 48 is a schematic end view of the elevated protector of FIG. 47. FIG. 49 is a schematic perspective view of a landing platform and a waste chute attached to it. 50 is another schematic perspective view of the landing platform and waste chute of FIG. 49. FIG. 51 is a schematic perspective view of a series of landing platforms and a waste chute. 52 is a schematic perspective view of the landing platform and waste chute of FIG. 49. FIG. 53 is a schematic perspective view of one end of a beam used in the landing platform described above. 10 …… Landing platform, 11 …… Roof assembly, 12 …… Beam, 13 …… Tubular member, 15 …… Brace,
17 …… floor panel, 18 …… side panel, 19 …… panel member, 20 …… frame, 21 …… eyelet, 22 …… eyelet, 23 …… pivot pin, 25 …… hinge assembly,
26 …… door, 28 …… kickboard, 31 …… side panel, 32 …… roof panel, 30 …… landing platform.

 ─────────────────────────────────────────────────── --Continued from the front page (31) Priority claim number PJ 8047 (32) Priority date December 29, 1989 (33) Priority claiming country Australia (AU)

Claims (14)

(57) [Claims] 1. A pair of beams 12 parallel to each other on the same plane; a plurality of brace members 15 extending between the beams 12 and fixed to the beams 12; and a floor panel supported on the brace members 15. 17;
And pivotally attached to the beam 12 movable from an overall upright position extending generally vertically to the floor panel 17 and a folder carrying position located near the floor panel 17
Foldable landing platform 10 including two side panels; 2. A landing platform according to claim 1, wherein the side panel 18 is positioned so as not to project above the beam 12 when positioned for transportation.
Ten. 3. The landing platform 10 of claim 2 wherein said side panel 18 can be rotated and raised about a bracket mounted along said beam 12. 4. Each beam has an "I" cross section so as to have upper and lower flanges 13 connected by a vertical web 14, the side panels 18 being pivoted near the lower portion of the upper flange 14. A landing platform (10) according to claim 3 mounted and fixed to the upper flange (13) when in the upright position. 5. The landing platform 10 of claim 4 wherein the pivot axis of each side panel 18 is spaced from the general surface of panel 18. 6. The floor panel is stretched so as to completely close the space between the beams 12, and one end of the beam is a side panel.
The landing platform 10 of claim 4 having a gate 27 extending between 18. 7. A pair of parallel beams 34 on the same plane; a platform portion 37 supported on the beam 42 near its ends; extending from the beam to an elevated structure to secure the beam 42 in place. A pair of elongated strut members 44; and a pivot means 48 for pivotally supporting each strut member 44 with an associated one of the beams 42, the pivot means 48 above the beam 42 from a position laterally spaced from the beam 42. A lateral motion support 50 that allows movement of the strut members 44 in spaced apart positions and allows pivoting of the support members 44 about a generally horizontal axis extending transversely of the associated beam 42. A landing platform 30 including pivot means 48; which includes pivot means 49 to allow the strut member 44 to pivot from a position generally parallel to the beam 42 to a position extending upwardly therefrom. 8. An "I" such that each of the beams 42 has an upper and lower flange 33 connected by a web 34.
8. The landing platform 30 of claim 7 having a cross section and resting on the upper flange 33 when the strut member 44 is in the upwardly extending position. 9. Each beam 42 has a pair of strut members 43 and 44, the strut members 43 and 44 being spaced apart along their associated beams 42 and vertically spaced apart axes. A landing platform 30 according to claim 8 pivoting about. 10. A plurality of parallel paired beams 94 on the same plane, each pair 94 being an individual floor of a building.
Beam 94 extending horizontally outwardly from 92; Floor 95 supported on each pair of beams 94 and movable relative to it from an outward position to an inward position with respect to the building; horizontal beam 94 A vertically extending beam 96 that supports the outward ends of the vertical beam 96; and a load that is supported on the vertical beam 96 and that is spaced outward from the vertical beam 96, and that At least one of the floors 95 when located
Landing platform assembly 90 including crane means 98; operable to be transported to two upper positions. 11. A landing platform assembly 9 in accordance with claim 10 wherein each floor 95 is supported on beam 42 for horizontal movement parallel to beam 42.
0. 12. A support frame 119; a generally horizontal seat member 111 supported on the frame, under which a vehicle or an operator may be located and protected by the seat member 111. , Cable 1
A sheet member 111 having an opening 113 through which 14 can penetrate; and a cover 116 extending above the opening 113, the slot 113 extending inward from the edge of the cover 116.
An overhead guard 11 for use with a crane including a cover 116 having a slot 117 through which a crane cable 114 can pass and the cover 116 being movably supported to follow the movement of the cable 114.
0. 13. A pair of beams 132 which are adapted to be attached to a building so as to extend outward from the building and are parallel to each other in the same plane; Extending between the beams 132 and being fixed to the beams 132 A plurality of brace members 133; a brace 133 including a hole 136 through which waste is introduced.
A floor panel 114 supported above; a vertically extending duct 141 supported by one of the beams 132, located between the landing platforms 130 and extending downwardly therefrom; and the hole Feed chute 14 extending from 136 to the duct 141
4, a landing platform 130 and a waste chute including a feed chute 144 adapted to travel along the feed chute 144 so that the waste sent to the hole 136 is fed into the duct 141. Combination with 131. 14. A pair of parallel beams 32 in the same plane; track means supported on each beam 32 and extending in the longitudinal direction of each beam 32; and a track extending between the beams 32. A floor movably supported on the means adapted to move horizontally in a longitudinal direction parallel to the beam from an outward position to an inward position with respect to the building that will support the landing platform. Landing platform 60 including panels;