GB1568995A

GB1568995A - Materialshandling machines

Info

Publication number: GB1568995A
Application number: GB4095376A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1977-09-30
Filing date: 1977-09-30
Publication date: 1980-06-11

Description

(54) IMPROVEMENTS IN OR RELATING TO MATERIALS HANDLING MACHINES (71) 1, JOHN PATRICK GODDARD, a British Subject, of 9 Roundhay Road, Rowley Fields, Leicester, (formerly of 2 Brecon Road, Woodley, Reading, Berkshire), do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to materials handling machines and, more particularly, to such machines as are used in crushing and screening rocks and stones. The invention also relates to plant incorporating such machines.

According to one aspect the invention provides a materials handling machine, wherein said machine is mounted on one or more skids which serve as a base for supporting the machine on the ground and which are associated with a plurality of jacking points by means of which the machine can be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location.

The machine may comprise two spaced skids disposed along opposite sides of the machine and the jacking points may comprise recesses or holes for receiving lifting members associated with the jacks. In a preferred construction, two skids are spaced apart by hdllow struts having open ends which form the jacking points.

According to another aspect, the invention provides a crushing and screening plant, particularly for rocks and stones, comprising a feeder, a crusher or breaker, and a screen, each being mounted on one or more skids which serves as a base for supporting the associated machine on the ground and which are associated with a plurality of jacking points by means of which the machines can be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location, said machines being interconnected by conveyors thereby to provide an arrangement which allows the plant to be operated in a desired manner.

The invention will now be further described, by way of example, with reference to the accompanying drawings, in which: Figs. 1 to 3 show different embodiments of machines according to the invention, namely a feeder, a crusher and a screen, respectively, for use in crushing and screening rocks and stones, and Fig. 4 is a diagrammatic view showing one crushing and screening plant arrangement.

Referring to Fig. 1, a machine for feeding rocks and stones and indicated generally at 1 comprises a tray feeder 2, having a grid 3 positioned over a hopper 4. The hopper is mounted on a base 5 supported by a pair of skids 6 disposed respectively along opposite sides of the base. Each skid comprises a vertical web 7 surrounded by a peripheral strip or flange 8 projecting from both faces of the web, and the lower part 8a of which engages the ground. The two skids are disposed parallel to each other and are interconnected by hollow box section struts 9 which support the base 5.The open ends 10 of the struts project through the webs 7 and serve as jacking points by means of which the feeder can be raised or lowered with the aid of externally applied jacks (as shown in Fig. 3) Figure 2 shows a stone crusher 11 of the impact breaker type mounted on a pair of skids similar to those described with reference to Figure 1, except that in this embodiment the skids are also secured together by diagonal bracing members 12.

Figure 3 shows a four-deck screen 13, which again is mounted on a pair of skids similar to those described with reference to Figure 1.

However, in this embodiment, the screen is shown raised off the ground by hand-operated externally applied jacks 14. A pair of jacks is associated with each pair of aligned jacking points 10 in the skids and a supporting beam 15 is passed through each hollow strut 9 with its ends projecting from the jacking points and connected with the associated jacks 14. Thus, when the jacks are operated, the screen is raised or lowered whilst being supported on the beams 15. It will be apparent that the feeder 1 and crusher 11 can be raised and lowered in the same manner.

The machines described are driven by electric motors and generally operate in a manner well-known to those skilled in the art to produce crushed and screened rocks and stones.

Referring now to Figure 4, there is illustrated one layout for a crushing and screening plant for rocks and stones, comprising a feeder 1, a crusher 11 and screen 13 which are interconnected by various conveyors to provide an arrangement which allows the plant to operate in a desired manner. The plant may, for example, be sited in a quarry.

The feeder 1 supplies a main feed conveyor 16 which in turn conveys rocks and stones to the inlet of the four-deck screen 13 which has four outlets for different sized screened rocks and stones. These outlets feed associated stock-piling conveyors 16a, 16b, 16c and 16d, which lead to stock-piles 17a, 17b, 17c and 1 7d respectively. Oversized rocks and stones are passed from the screen 13 via conveyor 18 to the crusher 11 where they are crushed and returned via conveyor 19 to the main feed conveyor 16, down-stream of the feeder 1, and are again fed to the screen 13 for rescreening.

It will be appreciated that by mounting the machines on skids provided with jacking points, they may be readily transported from place to place on a low-loader vehicle and can be set-up at a desired location to form any desired working arrangement without the necessity to use a crane. Moreover, the skids provide a firm base for supporting the machine on level stable ground without the necessity of constructing costly foundations.

Accordingly, the invention enables the advantages of a permanent installation to be obtained, whilst allowing the machines to be transported to another location, when desired. Also, any machine in an installation can readily be replaced by a different machine if desired, for example when one machine breaks down or when a mchine which performs to a different specification is required.

Whilst particular embodiments have been described, various modifications may be made without departing from the scope of the invention as set forth in the appended claims.

Thus, the invention may be applied to other types of materials handling machine besides those specifically described.

WHAT I CLAIM IS:- 1. A materials handling machine, wherein said machine is mounted on one or more skids which serve as a base for supporting the machine on the ground and which are associated with a plurality of jacking points by means of which the machine cn be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location.

2. A machine as claimed in claim 1, in which the jacking points comprise recesses or holes for receiving lifting members associated with the jacks.

3. A machine as claimed in claim 1 or 2, in which the machine comprises two spaced skids.

4. A machine as claimed in claim 3, in which the two spaced skids are disposed along opposite sides of the machine.

5. A machine as claimed in claim 3 or 4, in which the two skids are spaced apart by hollow struts having open ends which form the jacking points.

6. A machine as claimed in any of the preceding claims, in which the or each skid comprises a web surrounded by a peripheral flange projecting from one face of the web, part of which flange is for engaging the ground 7. A crushing and screening plant, particularly for rocks and stones, comprising a feeder, a crusher or breaker, and a screen, each being mounted on one or more skids which serves as a base for supporting the associated machine on the ground and which are associated with a plurality of jacking points by means of which the machines can be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location, said machines being interconnected by conveyors thereby to provide an arrangement which allows the plant to be operated in a desired manner.

8. A plant as claimed in claim 7, in which each machine is a machine as claimed in any of claims 2 to 6.

9. A plant as claimed in claim 7 or 8, including a first conveyor connecting an outlet of the feeder to an inlet of the screen, a second conveyor connecting an outlet of the screen for oversized rocks or stones to an inlet of the crusher or breaker, and a third conveyor connecting an outlet of the crusher or breaker to the first conveyor.

10. A plant as claimed in claim 9, in separating different sized rocks or stone, and which the screen is a multi-outlet screen for wherein said outlets of the screen are each connected to a conveyor for conveying rocks and stones from the associated outlet to form a stock pile of the rocks and stones.

11. A materials handling machine substantially as hereinbefore described with reference to Fig. 1, Fig. 2 or Fig. 3 of the accompanying drawings.

12. A crushing and screening plant substantially as hereinbefore described with reference to Fig. 4 of the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. The machines described are driven by electric motors and generally operate in a manner well-known to those skilled in the art to produce crushed and screened rocks and stones. Referring now to Figure 4, there is illustrated one layout for a crushing and screening plant for rocks and stones, comprising a feeder 1, a crusher 11 and screen 13 which are interconnected by various conveyors to provide an arrangement which allows the plant to operate in a desired manner. The plant may, for example, be sited in a quarry. The feeder 1 supplies a main feed conveyor 16 which in turn conveys rocks and stones to the inlet of the four-deck screen 13 which has four outlets for different sized screened rocks and stones. These outlets feed associated stock-piling conveyors 16a, 16b, 16c and 16d, which lead to stock-piles 17a, 17b, 17c and 1 7d respectively. Oversized rocks and stones are passed from the screen 13 via conveyor 18 to the crusher 11 where they are crushed and returned via conveyor 19 to the main feed conveyor 16, down-stream of the feeder 1, and are again fed to the screen 13 for rescreening. It will be appreciated that by mounting the machines on skids provided with jacking points, they may be readily transported from place to place on a low-loader vehicle and can be set-up at a desired location to form any desired working arrangement without the necessity to use a crane. Moreover, the skids provide a firm base for supporting the machine on level stable ground without the necessity of constructing costly foundations. Accordingly, the invention enables the advantages of a permanent installation to be obtained, whilst allowing the machines to be transported to another location, when desired. Also, any machine in an installation can readily be replaced by a different machine if desired, for example when one machine breaks down or when a mchine which performs to a different specification is required. Whilst particular embodiments have been described, various modifications may be made without departing from the scope of the invention as set forth in the appended claims. Thus, the invention may be applied to other types of materials handling machine besides those specifically described. WHAT I CLAIM IS:-

1. A materials handling machine, wherein said machine is mounted on one or more skids which serve as a base for supporting the machine on the ground and which are associated with a plurality of jacking points by means of which the machine cn be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location.

6. A machine as claimed in any of the preceding claims, in which the or each skid comprises a web surrounded by a peripheral flange projecting from one face of the web, part of which flange is for engaging the ground

7. A crushing and screening plant, particularly for rocks and stones, comprising a feeder, a crusher or breaker, and a screen, each being mounted on one or more skids which serves as a base for supporting the associated machine on the ground and which are associated with a plurality of jacking points by means of which the machines can be raised and lowered with the aid of externally applied jacks so as to facilitate transportation and positioning at a desired location, said machines being interconnected by conveyors thereby to provide an arrangement which allows the plant to be operated in a desired manner.