CA2423429C - Plate low ground pressure transport system - Google Patents
Plate low ground pressure transport system Download PDFInfo
- Publication number
- CA2423429C CA2423429C CA002423429A CA2423429A CA2423429C CA 2423429 C CA2423429 C CA 2423429C CA 002423429 A CA002423429 A CA 002423429A CA 2423429 A CA2423429 A CA 2423429A CA 2423429 C CA2423429 C CA 2423429C
- Authority
- CA
- Canada
- Prior art keywords
- plate
- frame
- grabber
- plates
- pair
- 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 - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/52—Apparatus for laying individual preformed surfacing elements, e.g. kerbstones
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/08—Temporary pavings
- E01C9/083—Temporary pavings made of metal, e.g. plates, network
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
Abstract
A system for reducing ground pressure for heavy equipment comprising ground covering plates, and a plate grabber for handling the plates. Each ground covering plate has a grabber receiving opening. The plate grabber comprises a frame for pivotal connection with a transporting vehicle, a pair of slide plates slidably attached to the frame each of the slide plates includes a tongue adapted to slide under the plate at the plate opening, actuator means for moving the slide plates outwardly to secure to the frame for subsequent transport and positioning.
Description
FIELD OF THE IlvIVENTION
This invention relates to a system for reducing ground pressure for heavy equipment.
BACKGROUND OF TIRE INVENTION
For transfernng materials by powered load c,~rrying equipment on rubber tires, the surface of the ground is often unable to repeatedly bear the l;round pressure of the machine. This can result when the ground is thawing out, from precipitation, soils classified as coarse-grained sand with few fines, such as Filter Media Sand, or on un~~ompacted soils (i.e.
landscaped areas and lawns). For certain operations materials need to be transferred over ground pressure sensitive soils like sewage system leaching beds, golf courses, asphalt or interlock paved driveways or patios, or in close proximity to building foundations.
Prior methods for reduce ground pressure involved the use of planks or mats placed on the ground in order to increase the ground contacting area. However, prior methods are not entirely satisfactory in terms of convenience for han~3ling and placing of the pressure reducing elements.
One proposed system involves an apparatus :for handling ground covering mats which has 2 0 claws that grip the outer edges of the mats. However, having the claws grip the outside of the mat limits the proximity to buildings or other obstacles that such a system can operate. Also, if not gripped centrally, the mats are difficult to maintain level and may slide out from the claws.
SUMMARY OF THI; INVENTION
An object of the present invention is to provide an improved system for reducing ground pressure for heavy equipment.
A specifzc object is to provide a system including ground covering plates and an apparatus for handling the plates.
The present invention provides a system for reducing ground pressure for heavy equipment, comprising ground covering plates and a plate grabber for handling the ground covering plates, each ground covering plate having a grabber receiving opening, the plate grabber comprising a frame for pivotal connection with a plate transporting vehicle, a pair of slide plates slidably attached to the frame, each of the slide plates having a tongue spaced downwardly from the frame, actuator means for moving the slide plates in opposite directions such that when the frame is placed over the ground covering plate opening the tongue slides under the plate adjacent to the opening thereby securing the plate to the frame..
BRIEF DESCRIPTION OF THE DRAWINGS
Fig 1 is a perspective schematic view of the .alate grabber of the present invention attached to a plate transporting vehicle and shown transporting a ground covering plate over a series of previously positioned plates.
Fig. 2 is a plan view of one embodiment of a ground covering plate.
Fig. 3 is an end view of the plate shown in F lg. 2.
Fig. 4 is a plan view of another embodiment of a ground covering plate.
Fig. 5 is an end view of the plate shown in Fig.4.
Fig. 6 is a side view of the plate grabber sep~~rated from a vehicle.
2 0 Fig. 7 is a top view of the plate grabber sepaJ-ated from a vehicle.
Fig. 8 is sectional view taken at A-A of Figs. 6 or 7.
DESCRIPTION OF THE PREFIERRED EMBODIMENTS
2 5 With reference to Fig. 1, the present invention comprises a system comprising ground covering plates 1, and a plate grabber 2, which is shown attached to a suitable plate transporting vehicle 20. As shown, a series of the plates 1 are pl;iced one after the other to create a solid surface on which the wheels of heavy equipment can travel.
Each ground covering platel includes an opening, or openings 3, adapted for attachment to the plate grabber 2. The openings 3 can also serve to reduce the weight of the plate. The plate can be made of any suitably strong and rigid material such as steel, aluminum or plastics.
In the embodiment of Figs.2 and 3 the plate 11 has a pair of running surfaces 4 for the wheels of heavy equipment. The running surfaces are interconnected by interconnecting members 14, for example by welding. This leaves openings 13 between the running surfaces 4 that allows the plate grabber 2 to interface and attach itself to the platel l, as will be described hereinafter.
As shown, the openings 13 for receiving the grabber lie on a center line parallel with the running surfaces 4, to facilitate balanced handling.
The plate 11 as shown has a plurality of cleats 5 attached to the bottom. The cleats may be composed of any suitable rigid material, such as metal, and connected, such as my welding.
The cleats serve to reinforce the plate and raise the underside of the plate from the ground or another plate in a storage location, to facilitate attaclllnent by the plate grabber through the opening means, as will be described. As shown in Figs. 2 and 3, one of the cleats may extend beyond the end of the plate surface, providing mutuh support for an adjacent plate.
The plate grabber 2 comprises a frame 9, a p;~ir of slide plates 6, and a mounting plate 23, for mounting to a suitable plate transporting vehicle 20.
With reference to Figs. 6, 7 and 8, the slide f~lates 6 are slidably supported by the frame 9.
Each slide plate 6 includes a tongue 16 that is spaced downwardly from the bottom of the frame 9 a distance sufficient to receive the thickness of the plate 1. The slide plates 6 are selectively moved outwardly or inwardly with actuator 7. When activated for grabbing a plate, the actuator 7 moves the tonguesl6 outwardly in opposite directions under the bottom of the plate 1 adjacent to the opening 3 thereby securing the plate to the plate grabber.
The outward of travel of the slide plates 6 is constrained by a linkage mechanism comprising a pair of links 8 each with slots 18 that receive a common restraining pin 17 (see Fig.
8). Upon activation of the actuator 7 the slide plates 6, and attached tongues 16, are pushed in opposite directions until the pin 17 engages the edge of the slot.18. This also serves to equalize the travel and thereby maintain the slide plates 6 equidistant from the center of the frame 9 thereby providing balanced positioning of the plate.
The frame 9, in which the slide plates are herd, is mounted on a pivot support 10 at an upper region of the frame to allow the frame to pivot freely about a horizontal axis to facilitate interfacing with the plate, particularly on uneven terrain.
The pivot support 10 is mounted on the mounting plate 23 by a hinge 12 that allows the pivot support to swing laterally left or right of centw about a vertical axis.
Pivoting is shown controlled by actuator 22.
The mounting plate 23 attaches to the plate transporting vehicle 20 by suitable means, such as a known type of quick attach system. The rf~quired vertical movements for the plate grabber can be provided by the vehicle 20.
In the embodiment of Figs. 4 and 5 the plate 21 has a unitary structure and includes a pair of centrally located openings 4 each adapted to receive one of the tongues. It will be appreciated that the opening means may also be in the form of a single larger opening.
In operation, with reference to Fig.l, the plate grabber 2 is attached, via the mounting plate 23, to a suitable transporting vehicle 20 that provides a power supply for the grabber actuators.
Now with reference to Figs. 6, 7 and 8, initially, to pick up a ground cover plate, the slide 2 5 plates 6, and attached tongues 16, of the plate grabber 2 will be retracted inward by means of actuator 7. Positioning and lowering of the frame 9 over the opening of a plate allows the tongues 16 to pass through the opening of the plate. With the tongues 16 positioned below the bottom of the plate 11, activation of the actuator 7 moves the tonguesl6 outwardly in opposite directions under the bottom of the plate thereby securing the plate to the bottom of the plate grabber 2. As described above, the outward motion of the slide plates 6 is constrained by the linkage mechanism comprising links 8 with elongat~:d openings 18, and restraining pinl7.
After the plate is transported and positioned by the plate grabber 2 to the desired location, the plate is released by retraction of the slide plates/tongues, or essentially the reverse of the above procedure.
With reference to Fig.l, to create an extende3 surface, a series of plates 1 are sequentially picked up by the plate grabber 2, transported, and placed on the ground one after the other to create a solid surface on which the wheels of heavy equipment can travel.
The plate grabber transporting vehicle can be any suitable vehicle, for example, various construction equipment (ie skid-steer loader, loader-backhoe ), tractors, fork lifts, trucks and similar machines that includes means for raising ancL lowering the plate grabber. The vehicle will preferably also be used to provide the necessary power for the actuators, which, for example, may include hydraulic, electrical, or pneumatic.
It should be noted that by providing attachment at a central location of the ground plate, i.e. along a center line parallel with the running surf ices, allows the plate to be placed close to buildings, or other fixed structures. The attachment ~:o such central opening also ensures that the 2 0 plate is balanced and securely attached, i.e. the plate cannot slide out.
It was found that the present system can reduce ground pressure similar to that of a 80 kg.
man in work boots. Depending on the configuration lower ground pressures can be achieved. The system has proved successful in avoiding damage to interlocking patios, asphalt driveways, lawn 2 5 surfaces, buried utilities, and foundations. It can provide access under most soil conditions (including peat, but not of the consistency of quick sand). In one test a skidsteer loader loaded with approximately 600 kg of soil repeatedly travelled over a lawn that was saturated by rain water. Upon removal of the system there was no apfarent ground compression or damage.
This invention relates to a system for reducing ground pressure for heavy equipment.
BACKGROUND OF TIRE INVENTION
For transfernng materials by powered load c,~rrying equipment on rubber tires, the surface of the ground is often unable to repeatedly bear the l;round pressure of the machine. This can result when the ground is thawing out, from precipitation, soils classified as coarse-grained sand with few fines, such as Filter Media Sand, or on un~~ompacted soils (i.e.
landscaped areas and lawns). For certain operations materials need to be transferred over ground pressure sensitive soils like sewage system leaching beds, golf courses, asphalt or interlock paved driveways or patios, or in close proximity to building foundations.
Prior methods for reduce ground pressure involved the use of planks or mats placed on the ground in order to increase the ground contacting area. However, prior methods are not entirely satisfactory in terms of convenience for han~3ling and placing of the pressure reducing elements.
One proposed system involves an apparatus :for handling ground covering mats which has 2 0 claws that grip the outer edges of the mats. However, having the claws grip the outside of the mat limits the proximity to buildings or other obstacles that such a system can operate. Also, if not gripped centrally, the mats are difficult to maintain level and may slide out from the claws.
SUMMARY OF THI; INVENTION
An object of the present invention is to provide an improved system for reducing ground pressure for heavy equipment.
A specifzc object is to provide a system including ground covering plates and an apparatus for handling the plates.
The present invention provides a system for reducing ground pressure for heavy equipment, comprising ground covering plates and a plate grabber for handling the ground covering plates, each ground covering plate having a grabber receiving opening, the plate grabber comprising a frame for pivotal connection with a plate transporting vehicle, a pair of slide plates slidably attached to the frame, each of the slide plates having a tongue spaced downwardly from the frame, actuator means for moving the slide plates in opposite directions such that when the frame is placed over the ground covering plate opening the tongue slides under the plate adjacent to the opening thereby securing the plate to the frame..
BRIEF DESCRIPTION OF THE DRAWINGS
Fig 1 is a perspective schematic view of the .alate grabber of the present invention attached to a plate transporting vehicle and shown transporting a ground covering plate over a series of previously positioned plates.
Fig. 2 is a plan view of one embodiment of a ground covering plate.
Fig. 3 is an end view of the plate shown in F lg. 2.
Fig. 4 is a plan view of another embodiment of a ground covering plate.
Fig. 5 is an end view of the plate shown in Fig.4.
Fig. 6 is a side view of the plate grabber sep~~rated from a vehicle.
2 0 Fig. 7 is a top view of the plate grabber sepaJ-ated from a vehicle.
Fig. 8 is sectional view taken at A-A of Figs. 6 or 7.
DESCRIPTION OF THE PREFIERRED EMBODIMENTS
2 5 With reference to Fig. 1, the present invention comprises a system comprising ground covering plates 1, and a plate grabber 2, which is shown attached to a suitable plate transporting vehicle 20. As shown, a series of the plates 1 are pl;iced one after the other to create a solid surface on which the wheels of heavy equipment can travel.
Each ground covering platel includes an opening, or openings 3, adapted for attachment to the plate grabber 2. The openings 3 can also serve to reduce the weight of the plate. The plate can be made of any suitably strong and rigid material such as steel, aluminum or plastics.
In the embodiment of Figs.2 and 3 the plate 11 has a pair of running surfaces 4 for the wheels of heavy equipment. The running surfaces are interconnected by interconnecting members 14, for example by welding. This leaves openings 13 between the running surfaces 4 that allows the plate grabber 2 to interface and attach itself to the platel l, as will be described hereinafter.
As shown, the openings 13 for receiving the grabber lie on a center line parallel with the running surfaces 4, to facilitate balanced handling.
The plate 11 as shown has a plurality of cleats 5 attached to the bottom. The cleats may be composed of any suitable rigid material, such as metal, and connected, such as my welding.
The cleats serve to reinforce the plate and raise the underside of the plate from the ground or another plate in a storage location, to facilitate attaclllnent by the plate grabber through the opening means, as will be described. As shown in Figs. 2 and 3, one of the cleats may extend beyond the end of the plate surface, providing mutuh support for an adjacent plate.
The plate grabber 2 comprises a frame 9, a p;~ir of slide plates 6, and a mounting plate 23, for mounting to a suitable plate transporting vehicle 20.
With reference to Figs. 6, 7 and 8, the slide f~lates 6 are slidably supported by the frame 9.
Each slide plate 6 includes a tongue 16 that is spaced downwardly from the bottom of the frame 9 a distance sufficient to receive the thickness of the plate 1. The slide plates 6 are selectively moved outwardly or inwardly with actuator 7. When activated for grabbing a plate, the actuator 7 moves the tonguesl6 outwardly in opposite directions under the bottom of the plate 1 adjacent to the opening 3 thereby securing the plate to the plate grabber.
The outward of travel of the slide plates 6 is constrained by a linkage mechanism comprising a pair of links 8 each with slots 18 that receive a common restraining pin 17 (see Fig.
8). Upon activation of the actuator 7 the slide plates 6, and attached tongues 16, are pushed in opposite directions until the pin 17 engages the edge of the slot.18. This also serves to equalize the travel and thereby maintain the slide plates 6 equidistant from the center of the frame 9 thereby providing balanced positioning of the plate.
The frame 9, in which the slide plates are herd, is mounted on a pivot support 10 at an upper region of the frame to allow the frame to pivot freely about a horizontal axis to facilitate interfacing with the plate, particularly on uneven terrain.
The pivot support 10 is mounted on the mounting plate 23 by a hinge 12 that allows the pivot support to swing laterally left or right of centw about a vertical axis.
Pivoting is shown controlled by actuator 22.
The mounting plate 23 attaches to the plate transporting vehicle 20 by suitable means, such as a known type of quick attach system. The rf~quired vertical movements for the plate grabber can be provided by the vehicle 20.
In the embodiment of Figs. 4 and 5 the plate 21 has a unitary structure and includes a pair of centrally located openings 4 each adapted to receive one of the tongues. It will be appreciated that the opening means may also be in the form of a single larger opening.
In operation, with reference to Fig.l, the plate grabber 2 is attached, via the mounting plate 23, to a suitable transporting vehicle 20 that provides a power supply for the grabber actuators.
Now with reference to Figs. 6, 7 and 8, initially, to pick up a ground cover plate, the slide 2 5 plates 6, and attached tongues 16, of the plate grabber 2 will be retracted inward by means of actuator 7. Positioning and lowering of the frame 9 over the opening of a plate allows the tongues 16 to pass through the opening of the plate. With the tongues 16 positioned below the bottom of the plate 11, activation of the actuator 7 moves the tonguesl6 outwardly in opposite directions under the bottom of the plate thereby securing the plate to the bottom of the plate grabber 2. As described above, the outward motion of the slide plates 6 is constrained by the linkage mechanism comprising links 8 with elongat~:d openings 18, and restraining pinl7.
After the plate is transported and positioned by the plate grabber 2 to the desired location, the plate is released by retraction of the slide plates/tongues, or essentially the reverse of the above procedure.
With reference to Fig.l, to create an extende3 surface, a series of plates 1 are sequentially picked up by the plate grabber 2, transported, and placed on the ground one after the other to create a solid surface on which the wheels of heavy equipment can travel.
The plate grabber transporting vehicle can be any suitable vehicle, for example, various construction equipment (ie skid-steer loader, loader-backhoe ), tractors, fork lifts, trucks and similar machines that includes means for raising ancL lowering the plate grabber. The vehicle will preferably also be used to provide the necessary power for the actuators, which, for example, may include hydraulic, electrical, or pneumatic.
It should be noted that by providing attachment at a central location of the ground plate, i.e. along a center line parallel with the running surf ices, allows the plate to be placed close to buildings, or other fixed structures. The attachment ~:o such central opening also ensures that the 2 0 plate is balanced and securely attached, i.e. the plate cannot slide out.
It was found that the present system can reduce ground pressure similar to that of a 80 kg.
man in work boots. Depending on the configuration lower ground pressures can be achieved. The system has proved successful in avoiding damage to interlocking patios, asphalt driveways, lawn 2 5 surfaces, buried utilities, and foundations. It can provide access under most soil conditions (including peat, but not of the consistency of quick sand). In one test a skidsteer loader loaded with approximately 600 kg of soil repeatedly travelled over a lawn that was saturated by rain water. Upon removal of the system there was no apfarent ground compression or damage.
Claims (6)
1. A system for reducing ground pressure for heavy equipment comprising ground covering plates and a plate grabber for handling the ground covering plates;
each ground covering plate having a grabber receiving opening;
said plate grabber comprising a frame for pivotal connection with a transporting vehicle, a pair of slide plates slidably attached to the frame; each of the slide plates having a tongue spaced downwardly from the frame, actuator means for moving the slide plates in opposite directions such that when the frame is placed over the grabber receiving opening of one of the ground covering plates, the tongues slide under the plate adjacent to the opening thereby securing the plate to the frame.
each ground covering plate having a grabber receiving opening;
said plate grabber comprising a frame for pivotal connection with a transporting vehicle, a pair of slide plates slidably attached to the frame; each of the slide plates having a tongue spaced downwardly from the frame, actuator means for moving the slide plates in opposite directions such that when the frame is placed over the grabber receiving opening of one of the ground covering plates, the tongues slide under the plate adjacent to the opening thereby securing the plate to the frame.
2. The system of Claim 1 wherein the ground covering plates comprise a pair of spaced parallel running surfaces interconnected by interconnecting members such that the running surfaces and interconnecting members define an opening for receiving the tongues of said slide plates, and wherein the opening lion on a center lane parallel with the running surfaces..
3. The system of Claim 1 wherein the ground covering plates include a plurality of cleats attached to the bottom of the plate.
4. The system of Claim 1 wherein the plate grabber includes a pivot support disposed at an upper region of the frame to allow the frame to pivot freely about a horizontal axis to facilitate interfacing with the plate.
5. The system of Claim 1 wherein the plate grabber includes a hinge allowing pivoting of the frame about a vertical axis, and an actuator for providing lateral movement of the frame with respect to the vehicle.
6. The system of Claim 1 further including a linkage mechanism for interconnecting the slide plates, said linkage mechanism comprising a pair of links wherein one end of one of the pair of links is connected with one of the pair of slide plates, and one and of the other of the pair of links is connected to the other of the pair of slide plates; each of the pair of links having an elongated opening for receiving a common restraining pin for constraining the travel of the slide plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002423429A CA2423429C (en) | 2003-03-21 | 2003-03-21 | Plate low ground pressure transport system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002423429A CA2423429C (en) | 2003-03-21 | 2003-03-21 | Plate low ground pressure transport system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2423429A1 CA2423429A1 (en) | 2004-09-21 |
| CA2423429C true CA2423429C (en) | 2006-01-31 |
Family
ID=32968301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002423429A Expired - Fee Related CA2423429C (en) | 2003-03-21 | 2003-03-21 | Plate low ground pressure transport system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2423429C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1027169C2 (en) * | 2004-10-04 | 2006-04-06 | Martens En Van Oord Groep B V | Semi-permanent roadway. |
| CN106087673B (en) * | 2016-06-23 | 2018-05-01 | 江西东亚环境工程有限公司 | A kind of Municipal sidewalk ground tile paving robot |
| CN106087675B (en) * | 2016-06-23 | 2018-05-04 | 南通江海港建设工程有限公司 | A kind of high ferro station square floor tile builds automation integrated machine |
| CN108468266A (en) * | 2016-06-23 | 2018-08-31 | 蒋盘君 | Using robot progress road surface the construction method of brick masonry operation |
| CN106049239B (en) * | 2016-06-23 | 2018-05-11 | 泉州耐博进出口贸易有限公司 | A kind of Municipal sidewalk ground tile paving robot suction means |
| CN106049240B (en) * | 2016-06-23 | 2018-05-04 | 江西东亚环境工程有限公司 | A kind of afforestation floor tile builds smart machine |
| CN106120522B (en) * | 2016-06-23 | 2018-05-15 | 张玲红 | A kind of road surface brick masonry Work robot with building device by laying bricks or stones |
| CN108808540B (en) * | 2018-06-25 | 2022-05-24 | 成都市市政工程（集团）有限责任公司 | Integrated covering machine for cable cover plate of viaduct |
| CN112030661A (en) * | 2020-09-02 | 2020-12-04 | 汪美霞 | Construction method for paving grass planting bricks in landscape gardens |
-
2003
- 2003-03-21 CA CA002423429A patent/CA2423429C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2423429A1 (en) | 2004-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20220301 |
|
| MKLA | Lapsed |
Effective date: 20200831 |