CA2354112A1 - Lifting frame - Google Patents
Lifting frame Download PDFInfo
- Publication number
- CA2354112A1 CA2354112A1 CA 2354112 CA2354112A CA2354112A1 CA 2354112 A1 CA2354112 A1 CA 2354112A1 CA 2354112 CA2354112 CA 2354112 CA 2354112 A CA2354112 A CA 2354112A CA 2354112 A1 CA2354112 A1 CA 2354112A1
- Authority
- CA
- Canada
- Prior art keywords
- frame
- hydraulic cylinder
- pinned
- legs
- truck
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/48—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using pivoted arms raisable above load-transporting element
- B60P1/483—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using pivoted arms raisable above load-transporting element using pivoted arms shifting the load-transporting element in a fore or aft direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/54—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading
- B60P1/5404—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading with a fixed base
- B60P1/5423—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading with a fixed base attached to the loading platform or similar
- B60P1/5428—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading with a fixed base attached to the loading platform or similar and having the first pivot on a horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Handcart (AREA)
Abstract
A pivoting rigid frame (constructed of two legs and a cross member) is used to transfer material from one platform to another. The frame, legs being pinned to the base allow the frame to rotate or pivot about the pins. The resulting motion allows the pivoting frame to move or transfer material from one location to another. (The maximum distance being twice the length of the frame leg). Rotation of this frame can be accomplished through a variety of methods. One such method involves the utilization of two hydraulic cylinders. The rod end of each cylinder is connected to the frame leg pins. The head of each hydraulic cylinder is connected to the frame and to the base through a double linkage set-up. The length and location of the links can vary to optimise the performance of the lifting frame. A winch can be added to the cross member of the frame to aid in the flexibility of the device and allow positioning of the load to become easier.
Description
LIFTING FRAME
The present invention relates to a device for lifting and transferring material from one position to another. In this particular embodiment the device is used to handle small cargo (under 3 Ton) and is mounted on a mobile platform such as a truck and is utilised to lift and transfer material onto the truck platform.
Various types of equipment are available that are mounted to a mobile platform and are capable of transferring material to that platform. One such device is a simple boom type device that can be mounted on a truck frame. These devices can be very bulky and expensive requiring a large truck as the platform. The smaller booms that can be mounted on smaller truck are cumbersome and can detract from the cargo capacity of the truck.
Another type of device is mounted on the rear of the truck and replaces the tail gate. This device which is essentially a platform can be lowered to the ground where the material is positioned on the platform. The platform and cargo can then be raised to the level of the truck bed. This type of device requires that the material being lifted has wheels to allow the it to be transferred to the truck bed.
Yet another type of device incorporates a winch mounted at the front of a tiltable bed. As the bed tilts itself into position the winch pulls the load onto the bed. Again this type of device requires that the material has wheels to allow it to be pulled onto the truck bed.
It is desirable to have a relatively inexpensive material transfer device that can be mounted on the back of a small truck that can provide a reasonable lifting capacity while maintaing the original cargo space. The material transfer device is to be simple in operation and is inconspicuous when not being used.
The present invention consists of a rigid hinged frame with each leg being pinned (hinged) to a base. The frame is free to rotate or pivot 180 degrees. Parallel and concurrent to each leg of the frame is a hydraulic cylinder whose rod shares (and rotates about) the same pin as the corresponding leg. The hydraulic cylinder is free to rotate about the same axis as the frame. The hydraulic cylinder rotates independent of the frame. one end of a lower link is pinned to the head of the hydraulic cylinder and while the other end is pinned to the base. The orientation of the lower link, in this embodiment, is substantially vertical when the hydraulic cylinder is at 45 degrees. An upper link ,Identical in shape to the lower link, has one end pinned to the head of the hydraulic cylinder while the other end is pinned to the arm. The orientation of the upper link in this embodiment is horizontal when the hydraulic cylinder is at 45 degrees. The resulting position of the frame is vertical when the hydraulic cylinder is at 45 degrees . The location of the pins and length of the linkages determine the capacity and range of motion of the device. A winch mounted on the horizontal member of the rigid frame allows further flexibility for load positioning as the load can be raised and lowered as required by the operator.
In another aspect of the invention a threaded rod of sufficient size and strength replaces the hydraulic cylinder. The links are pinned to a trunnion block instead of the head of the hydraulic cylinder. The block moves up and down the threaded rod as the rod is rotated by a hydraulic motor.
In another aspect of the invention a combination hydraulic motor and worm gear rotate the arm directly thus eliminating the need for the linkage.
The invention as exemplified by a preferred embodiment, is described with reference to the drawings in which.
The present invention relates to a device for lifting and transferring material from one position to another. In this particular embodiment the device is used to handle small cargo (under 3 Ton) and is mounted on a mobile platform such as a truck and is utilised to lift and transfer material onto the truck platform.
Various types of equipment are available that are mounted to a mobile platform and are capable of transferring material to that platform. One such device is a simple boom type device that can be mounted on a truck frame. These devices can be very bulky and expensive requiring a large truck as the platform. The smaller booms that can be mounted on smaller truck are cumbersome and can detract from the cargo capacity of the truck.
Another type of device is mounted on the rear of the truck and replaces the tail gate. This device which is essentially a platform can be lowered to the ground where the material is positioned on the platform. The platform and cargo can then be raised to the level of the truck bed. This type of device requires that the material being lifted has wheels to allow the it to be transferred to the truck bed.
Yet another type of device incorporates a winch mounted at the front of a tiltable bed. As the bed tilts itself into position the winch pulls the load onto the bed. Again this type of device requires that the material has wheels to allow it to be pulled onto the truck bed.
It is desirable to have a relatively inexpensive material transfer device that can be mounted on the back of a small truck that can provide a reasonable lifting capacity while maintaing the original cargo space. The material transfer device is to be simple in operation and is inconspicuous when not being used.
The present invention consists of a rigid hinged frame with each leg being pinned (hinged) to a base. The frame is free to rotate or pivot 180 degrees. Parallel and concurrent to each leg of the frame is a hydraulic cylinder whose rod shares (and rotates about) the same pin as the corresponding leg. The hydraulic cylinder is free to rotate about the same axis as the frame. The hydraulic cylinder rotates independent of the frame. one end of a lower link is pinned to the head of the hydraulic cylinder and while the other end is pinned to the base. The orientation of the lower link, in this embodiment, is substantially vertical when the hydraulic cylinder is at 45 degrees. An upper link ,Identical in shape to the lower link, has one end pinned to the head of the hydraulic cylinder while the other end is pinned to the arm. The orientation of the upper link in this embodiment is horizontal when the hydraulic cylinder is at 45 degrees. The resulting position of the frame is vertical when the hydraulic cylinder is at 45 degrees . The location of the pins and length of the linkages determine the capacity and range of motion of the device. A winch mounted on the horizontal member of the rigid frame allows further flexibility for load positioning as the load can be raised and lowered as required by the operator.
In another aspect of the invention a threaded rod of sufficient size and strength replaces the hydraulic cylinder. The links are pinned to a trunnion block instead of the head of the hydraulic cylinder. The block moves up and down the threaded rod as the rod is rotated by a hydraulic motor.
In another aspect of the invention a combination hydraulic motor and worm gear rotate the arm directly thus eliminating the need for the linkage.
The invention as exemplified by a preferred embodiment, is described with reference to the drawings in which.
Figure 1 is a side view of an embodiment.
Figure 2 is a perspective view of the lifting device Referring to the drawings, the embodiment of the invention shown, a lifting device comprises a lifting arm 1 a hydraulic cylinder 2, An upper link 3 and a lower link 4 and a mounting frame or base 5. The arm is connected to the mounting frame using a pin 6 allowing the arm free rotation. The hydraulic cylinder is concurrent with the arm and is also connected through pin 6 and is also allowed to rotate however independent of the arm. One end of the lower link is attached to the mounting frame using pin 7 while the other end is pinned to the head of the hydraulic cylinder using pin 8 the upper link is connected to the hydraulic cylinder through pin 9 while the other end is pinned to the arm using pin 10. Two of these structures mounted side by side and connected through a horizontal member 11 at the ends of the arms, provides a means to lift materials ( when suspended from the horizontal member) from one position to another. To further enhance the capability of this device a winch 12 is mounted on the horizontal member of the ridged frame. The winch allows the load to be raised and lowered to allow precise positioning of the load as it is placed in the back of the mobile platform. A feature of this set-up and due to the linkage arrangement is it's ability to potentially rotate 180 degrees. When mounted on the back of a mobile platform i.e. truck bed. The device has the ability to lift and transfer material from behind the truck up and onto the truck bed. And vice versa.
Although only a single embodiment of the present invention has been described and illustrated, the present invention is not limited to the features of this embodiment, but includes all variations and modifications with
Figure 2 is a perspective view of the lifting device Referring to the drawings, the embodiment of the invention shown, a lifting device comprises a lifting arm 1 a hydraulic cylinder 2, An upper link 3 and a lower link 4 and a mounting frame or base 5. The arm is connected to the mounting frame using a pin 6 allowing the arm free rotation. The hydraulic cylinder is concurrent with the arm and is also connected through pin 6 and is also allowed to rotate however independent of the arm. One end of the lower link is attached to the mounting frame using pin 7 while the other end is pinned to the head of the hydraulic cylinder using pin 8 the upper link is connected to the hydraulic cylinder through pin 9 while the other end is pinned to the arm using pin 10. Two of these structures mounted side by side and connected through a horizontal member 11 at the ends of the arms, provides a means to lift materials ( when suspended from the horizontal member) from one position to another. To further enhance the capability of this device a winch 12 is mounted on the horizontal member of the ridged frame. The winch allows the load to be raised and lowered to allow precise positioning of the load as it is placed in the back of the mobile platform. A feature of this set-up and due to the linkage arrangement is it's ability to potentially rotate 180 degrees. When mounted on the back of a mobile platform i.e. truck bed. The device has the ability to lift and transfer material from behind the truck up and onto the truck bed. And vice versa.
Although only a single embodiment of the present invention has been described and illustrated, the present invention is not limited to the features of this embodiment, but includes all variations and modifications with
Claims (3)
1. A lifting frame composed of two legs connected together with a cross-member.
2. A frame claimed in claim 1 wherein the legs are pinned to a base.
3. A frame claimed in claim 1 the frame can rotate or pivot
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2354112 CA2354112A1 (en) | 2001-07-10 | 2001-07-10 | Lifting frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2354112 CA2354112A1 (en) | 2001-07-10 | 2001-07-10 | Lifting frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2354112A1 true CA2354112A1 (en) | 2003-01-10 |
Family
ID=4169582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2354112 Abandoned CA2354112A1 (en) | 2001-07-10 | 2001-07-10 | Lifting frame |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2354112A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2490147C1 (en) * | 2012-01-27 | 2013-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) | Technological unit |
| GB2581302A (en) * | 2014-05-30 | 2020-08-12 | Brig Ayd Controls Ltd | Disability vehicle hoist |
-
2001
- 2001-07-10 CA CA 2354112 patent/CA2354112A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2490147C1 (en) * | 2012-01-27 | 2013-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) | Technological unit |
| GB2581302A (en) * | 2014-05-30 | 2020-08-12 | Brig Ayd Controls Ltd | Disability vehicle hoist |
| GB2581302B (en) * | 2014-05-30 | 2020-12-02 | Brig Ayd Controls Ltd | Disability vehicle hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |