CA2728003A1 - Winch and cable lifting apparatus - Google Patents
Winch and cable lifting apparatus Download PDFInfo
- Publication number
- CA2728003A1 CA2728003A1 CA 2728003 CA2728003A CA2728003A1 CA 2728003 A1 CA2728003 A1 CA 2728003A1 CA 2728003 CA2728003 CA 2728003 CA 2728003 A CA2728003 A CA 2728003A CA 2728003 A1 CA2728003 A1 CA 2728003A1
- Authority
- CA
- Canada
- Prior art keywords
- vertical member
- bearing roller
- bearing surface
- travelling
- lift
- 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
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/18—Load gripping or retaining means
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A lifting apparatus has a vertical member supported in a vertical orientation.
A
travelling lift moves up and down the vertical member. A winch and cable system provides a lifting force to raise the travelling lift up the vertical member. An engagement is provided between the travelling lift and the vertical member which includes a single upper bearing roller mounted to the travelling lift for rotation about a substantially horizontal first rotational axis and engaging a first bearing surface of the vertical member. A single lower bearing roller is similarly mounted to the travelling lift for rotation about a substantially horizontal second rotational axis. The lower bearing roller is positioned lower on the vertical member than the upper bearing roller and engages a second bearing surface of the vertical member, opposed to the first bearing surface. The described engagement is simple, inexpensive and is self-aligning to eliminate binding.
A
travelling lift moves up and down the vertical member. A winch and cable system provides a lifting force to raise the travelling lift up the vertical member. An engagement is provided between the travelling lift and the vertical member which includes a single upper bearing roller mounted to the travelling lift for rotation about a substantially horizontal first rotational axis and engaging a first bearing surface of the vertical member. A single lower bearing roller is similarly mounted to the travelling lift for rotation about a substantially horizontal second rotational axis. The lower bearing roller is positioned lower on the vertical member than the upper bearing roller and engages a second bearing surface of the vertical member, opposed to the first bearing surface. The described engagement is simple, inexpensive and is self-aligning to eliminate binding.
Description
TITLE
[001] Winch and Cable Lifting Apparatus FIELD
[001] Winch and Cable Lifting Apparatus FIELD
[002] There is described a winch and cable lifting apparatus which was developed for use in handling `'car boys" used by wine makers, but which has application to lifting apparatus generally.
BACKGROUND
BACKGROUND
[003] United States Patent 5,406,996 (Wagner et al) entitled "Bottled water lifting apparatus" discloses a winch and cable lifting apparatus for lifting water bottles onto water coolers. With all liflng apparatus that use a winch and cable to move a travelling lifting arm up and down a vertical member, there are concerns about binding. What is required is a cost effective configuration that will maintain alignment and be less prone to binding.
SUMMARY
SUMMARY
[004] There is provided a lifting apparatus, which includes a support with at least one vertical member supported in a vertical orientation by the support. The at least one vertical member has a first baring surface and a second bearing surface opposed to the first bearing surface. At least one travelling lift moves up and down the vertical member.
The travelling lift has a load attachment portion extending in cantilever fashion past the second bearing surface. A winch and cable system provide a lifting force to the load attachment portion to raise the travelling lift up the at least one vertical member; the travelling lift descending by force of gravity with a braking force being applied by the winch and cable system. An engagement is provid d between the travelling lift and the at least one vertical member which includes a single ur dIrr bearing roller mounted to the travelling lift for rotation about a substantially ho izc:..ta _irst rotational axis. The upper bearing roller engages the first bearing surface of the at least cr i vertical member. A single lower bearing roller is mounted to the travelling lift for rotation about a substantially horizontal second rotational axis. The lower bearing roller is positioned lower on the at least one vertical member than the upper bearing roller, with the lower bearing roller engaging the second bearing surface of the vertical member.
The travelling lift has a load attachment portion extending in cantilever fashion past the second bearing surface. A winch and cable system provide a lifting force to the load attachment portion to raise the travelling lift up the at least one vertical member; the travelling lift descending by force of gravity with a braking force being applied by the winch and cable system. An engagement is provid d between the travelling lift and the at least one vertical member which includes a single ur dIrr bearing roller mounted to the travelling lift for rotation about a substantially ho izc:..ta _irst rotational axis. The upper bearing roller engages the first bearing surface of the at least cr i vertical member. A single lower bearing roller is mounted to the travelling lift for rotation about a substantially horizontal second rotational axis. The lower bearing roller is positioned lower on the at least one vertical member than the upper bearing roller, with the lower bearing roller engaging the second bearing surface of the vertical member.
[005] The lifting apparatus. as described above, is self aligning. Without a load, the load attachment portion is capable of being manually moved up and down like a teeter totter.
When a load is actin; upon the load attachment portion, the travelling lift tends to rotate downwardly about the first rotational axis until such movement is stopped by the lower bearing roller engaging the second bearing surface and the upper bearing roller engaging the first bearing surface. When a lifting force is exerted upon the load attachment portion by the winch and cable system, the travelling lift is rotated upwardly about the first rotational axis.
Binding does not occur as the positioning and spacing of the upper bearing roller and the lower bearing roller allows a limited degre: of freedom of movement; referred to above as the teeter totter move: oent. With such movement, there is also a lessening of the engagement between the lover baring roller and the second bearing surface as the travelling lift ascends the vertical member.
BRIEF DESCRIPTION OF THE DRAWINGS
When a load is actin; upon the load attachment portion, the travelling lift tends to rotate downwardly about the first rotational axis until such movement is stopped by the lower bearing roller engaging the second bearing surface and the upper bearing roller engaging the first bearing surface. When a lifting force is exerted upon the load attachment portion by the winch and cable system, the travelling lift is rotated upwardly about the first rotational axis.
Binding does not occur as the positioning and spacing of the upper bearing roller and the lower bearing roller allows a limited degre: of freedom of movement; referred to above as the teeter totter move: oent. With such movement, there is also a lessening of the engagement between the lover baring roller and the second bearing surface as the travelling lift ascends the vertical member.
BRIEF DESCRIPTION OF THE DRAWINGS
[006] These and other features will become more apparent from the following description in v.whicF. _eference is made to the appended drawings, the drawings are for the purpose of illustratis'' only and are not intended to be in any way limiting, wherein:
[007] FIG. 1 is s side elevation view of a lifting apparatus.
[008] FIG. 2 is a top plan view, in section, of the lifting apparatus of FIG.
1.
1.
[009] FIG. 3 is a detailed side elevation view, in section, of the rollers of the lifting apparatus of FIG. 1, ccs the travelling lift descends.
[0010] FIG. 4 is a detailed side elevation view, in section, of the rollers of the lifting apparatus of FIG. 1, ~,s die travelling lift ascends.
[0011] FIG. 5 is a, detailed side view of the rollers and side plates.
DETAILED DESCRIPTION
DETAILED DESCRIPTION
[0012] A lifting app ratus generally identified by reference numeral 10, will now be described with refer :-.ce to FIG. 1 through 5.
Structure and I; :lati ::ship of Parts:
Structure and I; :lati ::ship of Parts:
[0013] Referring to FIG. 1, there is illustrated a lifting apparatus 10, which includes a support 12. A vertical member 14 is supported in a vertical orientation by support 12.
Vertical member 14 has a first bearing surface 16 and a second bearing surface 18 that is opposed to the first bearing surface 16. A travelling lift generally referenced by numeral 20 is provided that moves up and down vertical member 14. Travelling lift 20 has a load attachment portion 22 that extends in cantilever fashion past second bearing surface 18. It is preferred that vertical member: 14 be square in cross-section. When a circular cross-section is used, there is a da_z 4er of lateral movement. When grooves are created to limit lateral movement. the:e is a anger of binding. It has been determined that a square or rectangular cross-section works best, with the first bearing surface 16 and the second bearing surface 18 being flat.
Vertical member 14 has a first bearing surface 16 and a second bearing surface 18 that is opposed to the first bearing surface 16. A travelling lift generally referenced by numeral 20 is provided that moves up and down vertical member 14. Travelling lift 20 has a load attachment portion 22 that extends in cantilever fashion past second bearing surface 18. It is preferred that vertical member: 14 be square in cross-section. When a circular cross-section is used, there is a da_z 4er of lateral movement. When grooves are created to limit lateral movement. the:e is a anger of binding. It has been determined that a square or rectangular cross-section works best, with the first bearing surface 16 and the second bearing surface 18 being flat.
[0014] Referring to FIG 1, a w--inch and cable system generally referenced by numeral 24 is illustrated which iociudes a winch 26 with a handle 28, that is mounted to support 12, and a cable 30 that extcn 'can v inch 26 over vertical member to travelling lift 20.
Manual rotational of hz:ndl~e ~h causes winch and cable system 24 to provide a lifting force to load attachment portion to raise travelling li,~;t 20 up vertical member 14.
Travelling lift 20 descends by force of gravity with a braking force being applied by winch and cable system 24.
Manual rotational of hz:ndl~e ~h causes winch and cable system 24 to provide a lifting force to load attachment portion to raise travelling li,~;t 20 up vertical member 14.
Travelling lift 20 descends by force of gravity with a braking force being applied by winch and cable system 24.
[0015] Referring L'o FIG 3 and 4, an engagement 32 between travelling lift 20 and vertical member 14 inciad; l <: single upper bearing roller 34 mounted to travelling lift 20 for rotation about a substar._ia' , !i~ri:-om.al first rotatio.c.al axis 36. Upper bearing roller 34 engages first bearing 16 surface aer~ic.:rl rnernber 14. A single lower bearing roller 38 is mounted to travelling lift 20 for rotation E bout a substantially horizontal second rotational axis 40.
Lower bearing roller 38 is positioned lower on vertical member 14 than upper bearing roller 34. Lower bearing roller 38 engages second bearing surface 18 of vertical member 14. It is preferred that b >th up f c; bearing roller 34 and lower bearing roller 38 have side plates 39 of high density p!at i . such as is sold under the Trademark name DELRIN. Side plates 39 provide a bearing Su:.'-C- thr.t facilitate fr.: rf Cation of the rollers and ensure that undue friction is not .-use_ L a .gat 42. which prevnts the rollers from coming off axles that define their respecti , e rotational axes 36 argil 40. Referring to FIG 5, upper bearing roller 34 is illustrated with side plates 39 with securing nut 42 and bolt 44 extending there through.
The same arrangement is provided with lower bearing roller 38 illustrated in FIG 4.
Lower bearing roller 38 is positioned lower on vertical member 14 than upper bearing roller 34. Lower bearing roller 38 engages second bearing surface 18 of vertical member 14. It is preferred that b >th up f c; bearing roller 34 and lower bearing roller 38 have side plates 39 of high density p!at i . such as is sold under the Trademark name DELRIN. Side plates 39 provide a bearing Su:.'-C- thr.t facilitate fr.: rf Cation of the rollers and ensure that undue friction is not .-use_ L a .gat 42. which prevnts the rollers from coming off axles that define their respecti , e rotational axes 36 argil 40. Referring to FIG 5, upper bearing roller 34 is illustrated with side plates 39 with securing nut 42 and bolt 44 extending there through.
The same arrangement is provided with lower bearing roller 38 illustrated in FIG 4.
[0016] Referring to FIG 1 and FIG 2, support 12 can be outfitted with castors 42 as shown to facilitate movement of lifting apparatus 10. Support 12 is telescopically extendible to provide additional stability as required.
Operation:
Operation:
[0017] Referring to FIGS. 1 through 5. the use and operation of lifting apparatus 10 will now be described. Referring to FIG. 1, lifting apparatus 10 can be used to lift loads, such as a car boy 44. Lifting apparatus 10, as described above, is self-aligning.
Referring to FIG 4, without a load 44, load attachment portion 22 is capable of rocking like a teeter-totter.
Referring to FIG 3. w''.cn load 44 is acting upon load attachment portion 22, travelling lift 20 tends to rotate downwardly about first rotational axis 36 until such movement is stopped by lower bearing roller 38 engaging second bearing surface 18 and upper bearing roller 34 engaging first Lear; ig s_ rface 16. Referring *o FIG 4, when a lifting force is exerted upon load attachment por?_on 22 by winch and cable system 24, travelling lift 20 is rotated upwardly about firs: -.o:ational axis 36. Binding does not occur as the positioning and spacing of upper bca -na roller 34 and lower bearing roller 38 allows a limited degree of freedom of movc:rncnt. ref.--red to above as the teeter-totter movement. With such movement, there is also a lessening of the engagement between lower bearing roller 38 and second bearing surface 18 as travelling lift 20 ascends vertical member 14.
Referring to FIG 4, without a load 44, load attachment portion 22 is capable of rocking like a teeter-totter.
Referring to FIG 3. w''.cn load 44 is acting upon load attachment portion 22, travelling lift 20 tends to rotate downwardly about first rotational axis 36 until such movement is stopped by lower bearing roller 38 engaging second bearing surface 18 and upper bearing roller 34 engaging first Lear; ig s_ rface 16. Referring *o FIG 4, when a lifting force is exerted upon load attachment por?_on 22 by winch and cable system 24, travelling lift 20 is rotated upwardly about firs: -.o:ational axis 36. Binding does not occur as the positioning and spacing of upper bca -na roller 34 and lower bearing roller 38 allows a limited degree of freedom of movc:rncnt. ref.--red to above as the teeter-totter movement. With such movement, there is also a lessening of the engagement between lower bearing roller 38 and second bearing surface 18 as travelling lift 20 ascends vertical member 14.
[0018] In this patent Jocumen . the word "_ cmprising" is used in its non-limiting sense to mean that items folk . ring the word are includedd, but items not specifically mentioned are not excluded. A referee- ce to s. element by the indefinite article "a" does not exclude the possibility that more than or,c of the element is present, unless the context clearly requires that there be one anJ only one ofthe elemeM.s.
[0019] The following claims are to be understood to include what is specifically illustrated and described above, what is conceptually equivalent, and what can be obviously substituted. Those skilled in the art will appreciate that various adaptations and modifications of the described embodiments can be configured without departing from the scope of the claims. The illustrated embodiments have been set forth only as examples and should not be taken as limiting the invention. It is to be understood that, within the scope of the following claims, the invention may be practiced other than as specifically illustrated and described.
Claims
1. A lifting apparatus, comprising:
a support at least one vertical member supported in a vertical orientation by the support, the at least one vertical member having a first bearing surface and a second bearing surface opposed to the first bearing surface;
a travelling lift that moves up and down the at least one vertical member, the travelling lift having a load attachment portion extending in cantilever fashion past the second bearing surface;
a winch and cable system providing a lifting force to the load attachment portion to raise the travelling lift up the at least one vertical member, the travelling lift descending by force of gravity with a braking force being applied by the winch and cable system;
an engagement between the travelling lift and the at least one vertical member comprising:
a single upper bearing roller mounted to the travelling lift for rotation about a substantially horizontal first rotational axis, the upper bearing roller engaging the first bearing surface of the at least one vertical member;
a single lower bearing roller mounted to the travelling lift for rotation about a substantially horizontal second rotational axis, the lower bearing roller being positioned lower on the at least one vertical member than the upper bearing roller, the lower bearing roller engaging the second bearing surface of the at least one vertical member.
a support at least one vertical member supported in a vertical orientation by the support, the at least one vertical member having a first bearing surface and a second bearing surface opposed to the first bearing surface;
a travelling lift that moves up and down the at least one vertical member, the travelling lift having a load attachment portion extending in cantilever fashion past the second bearing surface;
a winch and cable system providing a lifting force to the load attachment portion to raise the travelling lift up the at least one vertical member, the travelling lift descending by force of gravity with a braking force being applied by the winch and cable system;
an engagement between the travelling lift and the at least one vertical member comprising:
a single upper bearing roller mounted to the travelling lift for rotation about a substantially horizontal first rotational axis, the upper bearing roller engaging the first bearing surface of the at least one vertical member;
a single lower bearing roller mounted to the travelling lift for rotation about a substantially horizontal second rotational axis, the lower bearing roller being positioned lower on the at least one vertical member than the upper bearing roller, the lower bearing roller engaging the second bearing surface of the at least one vertical member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2728003 CA2728003A1 (en) | 2011-01-17 | 2011-01-17 | Winch and cable lifting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2728003 CA2728003A1 (en) | 2011-01-17 | 2011-01-17 | Winch and cable lifting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2728003A1 true CA2728003A1 (en) | 2012-07-17 |
Family
ID=46514907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2728003 Abandoned CA2728003A1 (en) | 2011-01-17 | 2011-01-17 | Winch and cable lifting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2728003A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773807A (en) * | 2018-08-06 | 2018-11-09 | 肥东万安工程机械有限公司 | A kind of forklift door frame of stabilization |
-
2011
- 2011-01-17 CA CA 2728003 patent/CA2728003A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773807A (en) * | 2018-08-06 | 2018-11-09 | 肥东万安工程机械有限公司 | A kind of forklift door frame of stabilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20170118 |