Method and apparatus for excavating a soil containing mass

Abstract

A method and apparatus for digging and removing excavated material from a selected site provides a mobile device having a chassis that is movable or self-propelled. The mobile device has an elongated, preferably articulated boom with a free end portion having a digging implement that can include a digging tool, excavating tool or jetting tool. The boom preferably comprises at least three sections. The boom sections are foldable to a storage position on the chassis wherein one boom section stacks upon or is aligned with another boom section. The vacuum line is supported upon the boom wherein the vacuum line extends between the free end portion of the boom and the chassis. The boom attaches to the chassis at a base that can include a rotary or pivotal connection. The vacuum line supported by the boom extends along the boom and above the earth's surface. A selected material is excavated with the excavating implement (e.g., jetting tool or digging tool). The excavated material is vacuumed with the vacuum line into a collection vessel or tank that can be a part of a wheeled vehicle thus enabling transport to a disposal site. A separate vacuum truck can provide a vacuum to a selected collection tank.

Claims

1. A method of excavating a mass of selected material, comprising the steps of: a) providing a primary mobile device having a primary chassis that is movable or self-propelled; b) mounting on the primary mobile device an elongated articulated boom with a boom lower end section mounted on said primary chassis and a boom free end section, said boom comprising at least three sections and wherein said sections are foldable to a storage position on said primary chassis, wherein in said storage position, one boom section stacks next to another boom section; c) wherein the boom sections include said boom lower end section, said boom free end section and one or more middle boom sections in between the said boom lower end section and said boom free end section; d) wherein during use the boom sections form an arch; e) supporting a primary vacuum line upon said boom wherein the primary vacuum line extends between said free end section and the primary chassis, the primary vacuum line supported by the boom and extending along the boom and above the earth's surface; f) excavating soil containing material with one or more digging implements at a selected location near the primary chassis and boom; g) vacuuming the excavated soil containing material of step f with the primary vacuum line, wherein the excavated soil containing material travels via the primary vacuum line to the primary chassis and vacuum source; h) transferring the vacuumed soil containing material of step g to one or more separate collection vessels via one or more secondary flow lines; and i) wherein each said separate collection vessel is able to travel to or from the primary mobile device as when disposing of excavated soil containing material of step g.

2. The method of excavating a mass of material of claim 1 further comprising breaking up soil-containing material near the boom free end with a digging implement that is supported by the boom.

3. The method of excavating a mass of material containing material of claim 1 wherein the boom comprises at least four boom sections connected end to end.

4. The method of excavating a mass of material containing material of claim 1 wherein each boom section is connected to another boom section at a boom joint and wherein one of said boom joints defines a boom apex.

5. The method of excavating a mass of material containing material of claim 4 wherein said vacuum line extends to the boom apex.

6. The method of excavating a mass of material of claim 1 wherein the boom connects to the primary chassis at a rotary connection.

7. The method of excavating a mass of material of claim 1 wherein the mobile device supports a vacuum source that connects to the primary vacuum line.

8. The method of excavating a mass of material of claim 1 wherein the primary vacuum line is attached to the articulated boom and also tracks an arch shape.

9. The method of claim 1 wherein one or more of the collection vessels is a vehicle.

10. An excavation system comprising: a) a primary mobile device having a chassis that is movable or self-propelled; b) the primary mobile device having an elongated articulated boom that includes a lower chassis boom section and at least three boom sections connected end to end at boom joints; c) wherein the boom sections include said boom lower chassis section mounted on said chassis, a boom free end section and one or more middle boom sections in between the lower chassis boom section and the boom free end section; d) wherein during use the boom sections form an arch; e) wherein said boom is foldable to a storage position on said primary mobile device chassis, said boom having a free end portion and a base end portion at said base; f) a digging implement for excavating a selected material to be removed; g) a primary vacuum line supported upon said boom wherein the primary vacuum line extends between the free end portion of the boom and the lower end portion, the primary vacuum line supported by the boom and extending along the boom and above the earth's surface; h) a vacuum source on said chassis and in communication with the primary vacuum line for enabling a vacuuming of excavated material that is excavated with the digging implement; i) one or more secondary vacuum lines; j) one or more separate mobile collection vessels; k) wherein each secondary vacuum line enables a transmission of said excavated material to a said separate collection vessel via said secondary vacuum line; and l) wherein said one or more separate collection vessels are mobile and able to travel independently of the primary mobile device.

11. The excavation system of claim 10 wherein the articulating boom comprises multiple boom sections connected together end to end, said boom having an apex.

12. The excavation system of claim 11 wherein the articulating boom comprises multiple boom sections connected together end to end, each boom section connected to another boom section at a boom joint, one of said boom joints defining said apex.

13. The excavation system of claim 11 wherein the vacuum line extends to said apex.

14. The excavation system of claim 10 wherein the vacuum line has one end portion that connects to said digging implement, another end portion at said chassis and a middle section connected to the articulating boom at multiple positions along said articulating boom.

15. The excavation system of claim 10, wherein the boom has an end, and the end of the boom is extendable between about 5 and 200 feet from the chassis.

16. The excavation system of claim 10, wherein the boom has an end, and the end of the boom is extendable at least 30 feet from the chassis.

17. A job site excavation system comprising: a) a primary mobile device having a chassis that is movable or self-propelled; b) the primary mobile device having a boom that includes a lower end portion proximal to the mobile device chassis and a boom free end portion distal from the mobile device when in use; c) a digging implement for excavating a selected material to be removed from the job site; d) a primary vacuum line supported by said boom wherein the primary vacuum line extends between the boom free end portion and the proximal boom lower end portion, the primary vacuum line extending along the boom and above the earth's surface; e) said primary mobile device having a vacuum source in communication with the primary vacuum line for enabling a vacuuming of material that is excavated with the digging implement; f) one or more secondary vacuum lines; g) one or more separate secondary mobile devices, each having a collection vessel; h) said one or more secondary vacuum lines enabling a transmission of the said material excavated to said secondary mobile device collection vessel via a secondary vacuum line; and i) wherein each said secondary mobile device is mobile so that it can travel to or from the job site independently of said primary mobile device.

18. The excavation system of claim 17 wherein the collection vessel is on said chassis.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) For a further understanding of the nature, objects, and advantages of the present invention, reference should be had to the following detailed description, read in conjunction with the following drawings, wherein like reference numerals denote like elements and wherein:

(2) FIG. 1 is a perspective view of a preferred embodiment of the apparatus of the present invention;

(3) FIG. 2 is a schematic diagram of the method and apparatus of the present invention; and

(4) FIG. 3 is a fragmentary view of a preferred embodiment of the apparatus of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(5) FIGS. 1-3 show a preferred embodiment of the apparatus of the present invention designated generally by the numeral 10. Excavating apparatus 10 provides a chassis 11 that supports articulating boom 14. Chassis 11 can be wheeled, providing a plurality of wheels 12 for supporting the weight of the boom 14. Chassis 11 can also have outriggers 50 to help support the weight of the boom 14, water tank 36, and pressure washer pump and engine combination 37.

(6) Articulating boom 14 is preferably a multi-section arch shaped boom that is mounted to the chassis 11 at base 13 which can include a pivotal or rotary connection. In a preferred embodiment, the articulating boom 14 can provide three, four or five boom sections 15, 16, 17, 18, 19 that form an arch as seen in FIG. 1. The middle boom sections 16, 17, 18 are thus elevated and spaced away from the truck/chassis. The boom section 15 is a chassis boom section. The boom section 19 is a boom free end section. Each boom section 15-19 connects to another boom section with a boom joint. For example, the boom section 15 connects to the boom section 16 at boom joint 20. Similarly, there are boom joints at 21, 22 and 23. The five boom sections 15-19 connect end to end as shown with the boom apex 49 typically being at joint 20 or 21 (but it could be in between). These five boom sections can total about 60-120 feet long (or longer), for example. Apex 49 can be between about 30 and 100 feet high, for example.

(7) The apparatus 10 of the present invention is used to excavate material from a selected site such as the trench or excavation 24 shown in FIG. 1. Articulating boom 14 provides a boom free end portion 25 that can be part of the boom section 19 that is farthest away from chassis 11. Boom free end section 19 and boom free end portion 25 can support a digging implement 27 (e.g., jetting pipe or lance) which can include a jetting nozzle or nozzles 28 that receive water flow via jetting line 29 from water tank 36 and pressure washer pump and engine 37. For example, a four to six-foot (4-6) jetting pipe or lance can be supported at the end of the boom on boom free end section 19. A separate power jetting unit (e.g., engine and water pump) would supply high pressure fluid to the jetting pipe via a high-pressure hose. The jetting pipe could be fitted with a jetting nozzle at its lower end. Alternatively, a jetting line 29 could track along boom 14 and be supported by boom 14. In such a case, an engine and pump could be mounted on chassis 11. Vacuum line 26 preferably extends between digging implement 27 and chassis 11. A vacuum source 31 can be part of a separate vacuum truck 30 which is used to pull a vacuum on line 38. Such vacuum trucks 30 are commercially available, such as sold under the name/mark Rival Hydrovac.

(8) One or more valves on chassis 11 can be used to direct cuttings from trench or excavation 24 to a selected collection truck 32 or 33 via line 26 and lines 39, 40. Each truck 32, 33 provides a collection tank. The first collection truck 32 provides a collection tank 34. The second collection truck 33 provides a collection tank 35. Vacuum piping is provided that enables flow of cuttings or excavated material to travel via vacuum line 26 to a selected collection tank 34 or 35 via a vacuum line 39 or 40. Vacuum lines 39, 40 are provided that extend between chassis 11 and collection trucks 32, 33 respectively. Vacuum line 38 can be selectively attached to either collection truck 32 or collection truck 33. In FIG. 3, arrow 46 schematically illustrates a vacuum pulled on tank 34 of truck 32 with line 38 that connects to vacuum truck 30. Arrows 47 schematically represent flow of cuttings or excavated material 48 to tank 34 via vacuum line 39.

(9) As part of the method of the present invention, pressure washers 41, 42 can be provided in addition to the pressure washing digging implement 27. Each of the pressure washers 41, 42 provides a jetting wand or tool with a nozzle. Pressure washer 41 provides jetting tool wand with nozzle 43 while a jetting wand tool with a nozzle 44 is provided with pressure washer 42. Such pressure washers 41, 42 are commercially available and sold under the marks Pressure Pro, Yamaha, Simpson, Generac, Hot2Go, as examples (e.g., see www.pressurewashersdirect.com). Pressure washers are available in a wide range of pressure ratings (e.g., 1000-7000 psi). Some generate steam and/or hot water.

(10) The inside diameter of vacuum hoses 26, 38, 39, 40 can be about 2-10 inches. The length of vacuum hose 26 can be about 65-125 feet. Hoses 26, 38, 39, 40 are commercially available. The suction of the vacuum can be about 0-948 mbar, using for example a vacuum source commercially available from Super Products LLC (https://www.superproductsllc.com/). The pressure washers 41, 42 can be, for example, 3,500-7,000 PSI washers with 5-25 HP pumps. Pressure washing digging implement 27 can be connected to a pressure washer pump/engine (or a pressure washer) 37 on truck chassis 11 similar to pressure washers 41, 42. Pressure washer 37 can be, for example, a 3,500-7,000 PSI washer with a 5-25 HP engines (e.g., Honda, Kawasaki, Briggs and Stratton) powering a water pump. The pressure washer hoses can be about 0.5-1 inch in diameter and able to withstand 3,500-7,000 PSI of pressure. Such hoses are commercially available. Truck chassis 11 is preferably of a size that it can be transported without escort; typically, in most states that is not larger than 45 feet long by 8.5 feet wide.

(11) The boom 14 can be operated by an operator in the cab of the truck 11 or elsewhere with a remote control.

(12) Additional digging tools can be attached to the end of the vacuum line distal from the boom truckthere are such tools commercially available from Super Products

(13) LLC (https://www.superproductsllc.com/).

(14) The following is a list of parts and materials suitable for use in the present invention:

(15) TABLE-US-00001 PARTS LIST: PART NUMBER DESCRIPTION 10 excavating apparatus 11 chassis/truck 12 wheel 13 base/rotary connection/pivoting connection 14 articulating boom 15 boom section/chassis boom section 16 boom section 17 boom section 18 boom section 19 boom section/boom free end section 20 boom joint 21 boom joint 22 boom joint 23 boom joint 24 trench, excavation 25 boom free end portion 26 vacuum line/vacuum hose 27 digging implement 28 jetting nozzle 29 jetting line 30 vacuum truck 31 vacuum source 32 first collection truck 33 second collection truck 34 collection tank 35 collection tank 36 water tank 37 pressure washer pump/engine 38 vacuum line/vacuum hose 39 vacuum line/vacuum hose 40 vacuum line/vacuum hose 41 pressure washer 42 pressure washer 43 jetting wand/tool with nozzle 44 jetting wand/tool with nozzle 46 arrow 47 arrow 48 excavated material 49 apex 50 outrigger

(16) All measurements disclosed herein are at standard temperature and pressure, at sea level on Earth, unless indicated otherwise.

(17) The foregoing embodiments are presented by way of example only; the scope of the present invention is to be limited only by the following claims.