GB2229698A

GB2229698A - Skip with reinforced drop-down door

Info

Publication number: GB2229698A
Application number: GB8906961A
Authority: GB
Inventors: Dennis Alan Marshall
Original assignee: MARSHALL COOKE Ltd
Current assignee: MARSHALL COOKE Ltd
Priority date: 1989-03-28
Filing date: 1989-03-28
Publication date: 1990-10-03
Also published as: GB8906961D0

Abstract

A waste collection skip having a drop-own door (14) at one end, wherein the door comprises a steel sheet (24) cut to a required size and reinforced at or adjacent its top, bottom and side edges, and also along the top to bottom contra line, with members (26, 28, 30, 32, 34) of rolled hollow box section pre-cut to length and welded to said steel sheet. Hinge pins welded to the door fit cleats 40; locking pins may be fitted to the top of the door. <IMAGE>

Description

Improvements relating to Skips This invention relates to a waste collection skip.

Waste collection skips are nowadays in such commonplace everyday use that low cost production of these skips is required in high volume. It is a general aim of this invention to provide an improved construction of skip of the type having a drop-down door at one end, and the invention is more especially concerned with the construction of this door and its associated fittings.

According to the invention, there is provided a skip having a drop-down door at one end, wherein the door comprises a steel sheet cut to a required size and reinforced at or adjacent its top, bottom and side edges,'and also along the top to bottom centre line, with members. of rolled hollow box section pre-cut to length and welded to said steel sheet.

Conventionally, in the manufacture of such. a skip door, reinforcement is by means of channel section made from sheet steel which has to be first cut and then folded.

The use of rolled hollow box section (RHS) instead of channel section for reinforcement offers economy in production labour costs, whilst at the same time enabling a stronger door to be achieved when steel of equivalent gauge and dimensions is employed.

A preferred skip door has upper and lower horizontal RHS reinforcement members extending the full width of the door, and three top-to-bottom RHS reinforcement members extending between the two horizontal RHS reinforcement members.

Three mm gauge sheet steel is preferred, reinforced by sixty by forty mm RHS horizontal reinforcement members and forty by forty mm RHS vertical reinforcement members.

Along the bottom of the door, the full width RHS reinforcement is preferably welded in a position at a small spacing from the edge of the steel sheet, and on each side of the door a pivot rod is welded in position in the angle between the outside of the said RHS reinforcement and the projecting edge of steel sheet. These pivot rods are located in cleats welded in position to the end wall of the strip on opposite sides of the bottom of the door opening, thereby to define a horizontal axis for drop-down hinging of the door.

At the top of the door, the open ends of the full width RHS reinforcement member are able to receive sliding bolts slidably retained in further cleats welded in position to the end wall of the skip on opposite sides of the top of the door opening.

The skip door is preferably laterally central in the end wall, and preferably has dimensions of the order of two thirds of the full width of the skip, and extends downwardly from the top of the end wall of the skip for about three quarters of the height of said wall, which, as is conventional, slopes outwardly from the base of the skip towards the open top of the skip. Below the drop-down door, the end wall ofthe skip is preferably provided with a tip bar assembly extending across the end wall, symmetrically on opposite sides of the top to bottom centre line thereof, for a distance slightly less than the width of the door.

A preferred skip incorporating the door has vertical side walls, sloping end walls of lesser vertical height than the side walls, external reinforcement along horizontal main portions of the tops of the side walls and the horizontal tops of the end walls (except where the door is provided), and folded steel reinforcement members of tapering cross section extending along sloping end portions of the side walls to provide continuous reinforcement (except for the door) around the top edge of the skip.

However, the invention is also applicable to a skip having side walls and end walls of uniform height.

Pre-manufactured lift boss assemblies are welded to the side walls of the skip immediately beneaththe top edge reinforcement.

The invention is exemplified with reference to the accompanying drawings, in which: Figure 1 is a side view of a waste collection skip; Figure 2 is an end view, vertically split to show a half of one plain end wall and half of one end wall having a drop-down door; Figure 3 shows the construction of the drop-down door; and Figure 4 shows details of the skip fittings associated with the door.

Referring to Figure 1, a skip has side walls 10, sloping end walls 12 of lesser height, one having a drop-down door 14, reinforcement 16 along the top edges of the walls (except for the door), included folded members 18 of tapering cross section interconnecting the side wall reinforcement with the end wall reinforcement, premanufactured lift boss assemblies 20 welded to the side walls, and tip bar assemblies 22 adjacent the bottom edges of the end walls.

The drop-down door 14 at one end of the skip appears in Figure 2, and its construction is shown in detail in Figure 3. It comprises a steel sheet 24 of 3 mm gauge externally reinforced by top and bottom horizontal rolled hollow box section (RHS) members 26, 28 and three top to bottom rolled hollow box section members 30, 32, 34 (two at opposite side edges) extending between the two horizontal RHS reinforcement members. The RHS members 26, 28 are of 2 - 5 mm gauge and 60 by 40 mm cross section, whilst the RHS members 30, 32, 34 are of 2 - 5 mm gauge and 40 by 40 mm cross section. The RHS members are welded to the steel sheet 24, with the RHS member 28, in particular, slightly spaced from the bottom edge of the steel sheet to enable hinge pins 36 (see Figure 2) to be welded in the angle between the RHS member and the projecting edge of the steel sheet. As also shown in Figure 2, the open ends of the upper horizontal RHS reinforcement member 26 are able to receive L-shaped securing bolts 38 for holding the door closed.

Thus, referring to Figure 2 and to Figure 4, lower cleats 40 in the form of V-strips are welded to the skip end wall 12 to locate the hinge pins 36 welded to the door, and upper cleats 42 in the form of V-strips, together with associated stop plates 44 for limiting withdrawal of the bolts 38 and locking plates 46 for holding the bolts closed are also welded to the skip end wall.

Various modifications of the above-described and illustrated arrangement are possible within the scope of the invention hereinbefore defined.

Claims

1. A waste collection skip having a drop-down door at one end, wherein the door comprises a steel sheet cut to a required size and reinforced at or adjacent its top, bottom and side edges, and also along the top to bottom centre line, with members of rolled hollow box section pre-cut to length and welded to said steel sheet.

2. A skip according to claim 1, wherein the door has upper and lower horizontal RHS reinforcement members extending the full width of the door, and three top-to-bottom RHS (rolled hollow steel) reinforcement members extending between the two horizontal RHS reinforcement members.

3. A skip according to claim 2, made of three mm gauge sheet steel reinforced by sixty by forty mm RHS horizontal reinforcement members and forty by forty mm RHS vertical reinforcement members.

4. A skip according to claim 1 or claim 2 or claim 3, wherein, along the bottom of the door, the full width RHS reinforcement is welded in a position at a small spacing from the edge of the steel sheet, and on each side of the door a pivot rod is welded in position in the angle between the outside of the said RHS reinforcement and the projecting edge of steel sheet.

5. A skip according to claim 4, wherein the pivot rods are located in cleats welded in position to the end wall of the strip-on opposite sides of the bottom of the door opening, thereby to define a horizontal axis for drop-down hinging of the door.

6. A skip according to any of claims 1 to 5, wherein, at the top of the door, the open ends of the full width RHS reinforcement member are able to receive sliding bolts slidably retained in further cleats welded in position to the end wall of the skip on opposite sides of the top of the door opening.

7. A skip according to any of claims 1 to 6, wherein the skip door is laterally central in the end wall, and has dimensions of the order of two thirds of the full width of the skip, and extends downwardly from the top of the end wall of the skip for about three quarters of the height of said wall, which slopes outwardly from the base of the skip towards the open top of the skip.

8. A skip according to claim 7, wherein, below the dropdown door, the end wall of the skip is provided with a tip bar assembly extending across the end wall, symmetrically on opposite sides of the top to bottom centre line thereof, for a distance slightly less than the width of the door.

9. A skip according to any of claims 1 to 8, which has vertical side walls, sloping end walls of lesser vertical height than the side walls, external reinforcement along horizontal main portions of the tops-of the side walls and the horizontal tops of the end walls (except where the door is provided), and folded steel reinforcement members of tapering cross section extending along sloping end portions of the side walls to provide continuous reinforcement (except for the door) around the top edge of the skip.

10. A skip according to any of claims 1 to 9, wherein pre-manufactured lift boss assemblies are welded to the side walls of the skip immediately beneath the top edge reinforcement.

11. A waste collection skip substantially as hereinbefore described with reference to the accompanying drawings.