CA1308141C - Wheel clamp - Google Patents
Wheel clampInfo
- Publication number
- CA1308141C CA1308141C CA000592904A CA592904A CA1308141C CA 1308141 C CA1308141 C CA 1308141C CA 000592904 A CA000592904 A CA 000592904A CA 592904 A CA592904 A CA 592904A CA 1308141 C CA1308141 C CA 1308141C
- Authority
- CA
- Canada
- Prior art keywords
- jaw
- wheel
- jaw means
- engaging
- boom
- 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 - Lifetime
Links
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 230000009977 dual effect Effects 0.000 description 2
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus for lifting a large tractor wheel includes a frame defined by feet and a post, which carries a bracket for rotation around the longitudinal axis of the post;
a boom pivotally connected at one end to the bracket for rotation around a horizontal axis; a plate on the bracket for supporting a jack in engagement with the boom so that the latter can be raised and lowered; and a clamp suspended from the outer free end of the boom for raising and lowering a wheel, the clamp being defined by (i) a pair of scissor jaws with bearings on the bottom opposing ends thereof for engaging the opposite sides of a wheel rim or (ii) a fixed C-shaped jaw with bearings on the bottom and side thereof for engaging one side and rim of a wheel, and an inverted L-shaped jaw adjustably connected to the top arm of the fixed jaw for straddling the top of a tire, with a bearing on the bottom free end thereof for engaging the other side of the tire and holding the wheel in the C-shaped jaw.
An apparatus for lifting a large tractor wheel includes a frame defined by feet and a post, which carries a bracket for rotation around the longitudinal axis of the post;
a boom pivotally connected at one end to the bracket for rotation around a horizontal axis; a plate on the bracket for supporting a jack in engagement with the boom so that the latter can be raised and lowered; and a clamp suspended from the outer free end of the boom for raising and lowering a wheel, the clamp being defined by (i) a pair of scissor jaws with bearings on the bottom opposing ends thereof for engaging the opposite sides of a wheel rim or (ii) a fixed C-shaped jaw with bearings on the bottom and side thereof for engaging one side and rim of a wheel, and an inverted L-shaped jaw adjustably connected to the top arm of the fixed jaw for straddling the top of a tire, with a bearing on the bottom free end thereof for engaging the other side of the tire and holding the wheel in the C-shaped jaw.
Description
~ This invention relates to a wheel lifting apparatus, and in particular to an apparatus for lifting large wheels of the type used on dual wheel vehicles.
The changing of tires or wheels on large tractors or S other vehicles is usually a time consuming and difficult job.
Because the wheels are large and cumbersome, removal of the ~ wheels from the vehicle axles is not easily accomplished.
- ~ ~. f~ The object of the present invention is to offer a solution to the above defined problem by providing a relatively simple, lightweight apparatus for lifting such wheels.
Accordingly, the present invention relates to an apparatus for lifting a largè tractor wheel or the like comprising first jaw means; second jaw means connected to said first jaw means for straddling the tire portion of the wheel;
first bearing means on said first jaw means for engaging the ' rim of the wheel on one side of the wheel; second bearing means on sald second jaw means for engaging the other side of -~ ~ the wheel7 and chain means connected to a top end of at least ~ 20 one said first and second jaw means for lifting both said jaw.,~- ~
means.
The lnvention will be described in greater detail ~-l~ with reference to the accompanying drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a perspective vlew of a wheel lifting ._ ~ apparatus in accordance with the present invention;
::
,~ 1 ~'.' 7F
,',,',~ ' .
'~ .' .
,, .... , . , : , ' ~ ' '~ ' -: ` ~ 13081 41 Figure 2 is an exploded, perspective view of a wheel lifting apparatus similar to that shown in Fig. 2 with parts omitted;
Figure 3 is a perspective view from below of a wheel clamp used in the apparatus of Figs. 1 and 2;
. . ~ .
~- Figure 4 is an exploded, perspective view of the ;~ clamp of Fig~ 3;
h Figure S is a perspective view from above of a second form of wheel clamp for use with the apparatus of Figs.
~ 1 and 2; and : ~ .
Figure 6 is an exploded, perspective view of the clamp of Fig. 5;
It will be noted that the apparatus of Figs. l and 2 ' 15 are identical, except that a ramp on one is in another position on the second apparatus.
Referring to the drawings, the lifting apparatus of the present invention includes a frame generally indicated at 1 which is defined by a pair of elongated feet 2 and 3 defining a right angle for spreading a load over a large area, i.e. for stability. The inner ends of the feet 2 and 3 are interconnected by a top plate 4, and by a gusset 6 and plate 7 i (Fig. 2). The gusset 6 and the plate 7 are interconne~ted by bolts 8. A wheel support ramp lO is provided on the outer end of one foot 2. The ramp 10 is defined by a pair of short arms ll perpendicular and connected to the foot 2. The arms ll , , .
., ~, ~ . - ., : .
. . .
.: . : . -.
extend outwardly in a direction oppo~ite to the foot 3.
Plates 13 (Fig. 2) on the arms 11 receive pads 14, which form the top surface of the ramp 10.
An elongated, tubular, cylindrical post 16 is mounted on the foot 3 a sholt di6tance from the inner end thereof.
~-- ~t' ' ~ The post 16 is attached to a shorter bottom tube 17 by a -bolt 18, and i6 supeorted by inclined braces 20 extending - between lugs 21 on the feet 2 and 3, and lug6 22 on the po6t 16 near the upper end thereof.
An elongated arm or boom 24 i6 rotatably mounted on the top end of the po6t 16. The boom 24 can be rotated `~ around the longitudinal axi6 of the post 16 and pivoted t around a horizontal axi6 during lifting. For 6uch purpo~e, the inner end of the boom 24 i6 pivotally connected to a pair of vertical top plates 26 on a bracket 27 by a pin Z8, The bracket 27 iB rotatably mounted on the upper end of the post 16. The bracket 27 include6 vertical and horizontal arms 30 and 31, respectively reinforced by a . diagonal brace 32, and bottom and top mounting plate6 34 ; ~ 20 and 35, respectively. The bottom plate 35 extend6 , outwardly from the junction of the arms 30 and 31. Bolt6 36 extending through the outer free end of the plate 35 carry bearings 38 for riding on the post 16. A pin 39 extends downwardly from the top plate 34 into a bearing 40 in the post 16. Thus, the bracket 27 can be rotated around longitudinal axi6 of the po~t 16.
., ~,.
' , 1 308 1 ~ 1 A rectangular jack ledge 42 with a flange 43 on the outer end thereof is mounted on the outer end of the arm 31 of the bracket 27 by means of a bolt 45 extending through lugs 46 : on the bottom of the ledge 42. During use, the ledge 42 r~;
'`'.~ J 5 supports a small manually operated hydraulic jack 47, the post 49 of which engages a pin 50 extending between the arms of a clevis 52 on the bottom of the boom 24. Thus, extension or retraction of the jack post 49 causes corresponding vertical movement of the boom 24 during pivoting thereof around the pin - 10 28.
A plate 53 with a plurality of holes 54 therein is provided on the bottom of the outer free end of the boom 24 for receiving a swivel hook 55, which supports a tire clamping ~~ device generally indicated at 56 (Figs. 3 and 4). The device 56 includes a pair of identical, elongated, generally C-shaped _ jaws 57 including inclined top arms 58, which are pivotally lnterconnected by a bolt 60 near the upper ends thereof so that the jaws 57 can be operated scissor-fashion to straddle a tire 61 and engage the rim 62 of a wheel 63. The upper ends of the arms 58 are connected to the ends of a chain 64 by clevi~es 65, and the chain is carried by the swivel hook 55 during use. The lower, horizontal arms 66 of the jaws 57 are defined by inverted T-shaped rods carrying bearings 67 at right angles to each other. The bearings are held on the arms ,~"~., 66 by locking collars 68.
" .
, ., ~: , "
`` 130~141 , With reference to Figs. 4 and 5, in a second - embodiment the jaws include one thin, generally C-shaped, planar jaw 70 for straddling the tire 61 from one side thereof (Fig. 5), and an L-shaped rod 72 defining a second jaw for ~ 5 extending over the top of the tire 61. The chain 64 is -~ connected to the horizontal top arm 73 of the jaw 70 by clevises 64 and bolts 75. The rod 72 is slidably mounted in a sleeve 76 welded to one side of the arm 73. A screw 78 with a ~-, handle 79 on the outer end thereof extends through a nut 80 on the sleeve 76 and an aligned hole (not shown) in engagement with the rod 72 for securing the rod in one position. A
bearing 82 and locking collar 83 are provided on the bottom free end of the rod 72 for engaging the other side of the tire 61.
A second bearing 85 and locking collar 86 are ~- mounted on a lug 87 on the vertical arm 88 of the jaw 70.
Third and fourth bearings 90 and 91, respectively are adjustably mounted on the bottom, horizontal arm 93 of the jaw 70 for engaging the interior of the rim 62. The bearings 90 and 91 are mounted on spaced apart support arms 95, which are connected to the arm 93 by bolts (not shown) extending through holes 96 in the arm 93. Bolts 98 in the top ends of the arms 95 carry the bearings 90 and 91.
~ In use, in order to replace a wheel or tire on a ; 25 tractor of the type including wheels in pairs, the tractor is driven onto the frame, i.e. one wheel of a pair of wheels is ~, . ..
:, --~ po6itioned on the ramp 10 to stabilize the frame 1. A6 be6t 6hown in Fig. 1, with the embodiment of clamping device of Fig6. 3 and 4, the jaw6 57 of a clamping device 56 are ~anually po6itioned to 6traddle the tire 61 of the outer wheel 63 of the pair of wheel6. The bearing6 67 are ,~
a placed again6t the rim 62 of the wheel 63, with the outermost of each pair of bearings 67 against the beaded outer periphery of the rim. When the device of Figs. 5 and 6 i6 used, the 6crew 78 i6 loosened, and the device is placed on a wheel 60 that the bearing6 90 and 91 engage the rim on one 6ide of the wheel and the bearing 82 presses against the opposite side of the tire. A jack 47 i6 placed on the ledge 42 with the post 49 of the jack in engagement with the pin 50. By manually operating the jack 47, the boom 24 i6 caused to rise. Thus, the chain 64 is pulled upwardly with the jaws 57 or 70 and 72 and the wheel 63.
Because of the scissors action of the jaws 57, lifting of the device 56 of Figs. 3 and 4 tend6 to force the bottom end~ of the 3aws 57 together, preventing 3aw ~eparation and ao unintentional dropping of a wheel 63. The rod 72 defining ~- ~ the gecond jaw of the second embodiment of clamping device performs the same function.
It will be appreciated that while the lifting : ,~
~ apparatug described herein is primarily intended for use ; ~Po. 25 with dual wheel vehicles, by holding the frame 1 down, the apparatus could be used with single wheel vehicles, i.e.
,~, ~ G
. .
., , :
..... .
The changing of tires or wheels on large tractors or S other vehicles is usually a time consuming and difficult job.
Because the wheels are large and cumbersome, removal of the ~ wheels from the vehicle axles is not easily accomplished.
- ~ ~. f~ The object of the present invention is to offer a solution to the above defined problem by providing a relatively simple, lightweight apparatus for lifting such wheels.
Accordingly, the present invention relates to an apparatus for lifting a largè tractor wheel or the like comprising first jaw means; second jaw means connected to said first jaw means for straddling the tire portion of the wheel;
first bearing means on said first jaw means for engaging the ' rim of the wheel on one side of the wheel; second bearing means on sald second jaw means for engaging the other side of -~ ~ the wheel7 and chain means connected to a top end of at least ~ 20 one said first and second jaw means for lifting both said jaw.,~- ~
means.
The lnvention will be described in greater detail ~-l~ with reference to the accompanying drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a perspective vlew of a wheel lifting ._ ~ apparatus in accordance with the present invention;
::
,~ 1 ~'.' 7F
,',,',~ ' .
'~ .' .
,, .... , . , : , ' ~ ' '~ ' -: ` ~ 13081 41 Figure 2 is an exploded, perspective view of a wheel lifting apparatus similar to that shown in Fig. 2 with parts omitted;
Figure 3 is a perspective view from below of a wheel clamp used in the apparatus of Figs. 1 and 2;
. . ~ .
~- Figure 4 is an exploded, perspective view of the ;~ clamp of Fig~ 3;
h Figure S is a perspective view from above of a second form of wheel clamp for use with the apparatus of Figs.
~ 1 and 2; and : ~ .
Figure 6 is an exploded, perspective view of the clamp of Fig. 5;
It will be noted that the apparatus of Figs. l and 2 ' 15 are identical, except that a ramp on one is in another position on the second apparatus.
Referring to the drawings, the lifting apparatus of the present invention includes a frame generally indicated at 1 which is defined by a pair of elongated feet 2 and 3 defining a right angle for spreading a load over a large area, i.e. for stability. The inner ends of the feet 2 and 3 are interconnected by a top plate 4, and by a gusset 6 and plate 7 i (Fig. 2). The gusset 6 and the plate 7 are interconne~ted by bolts 8. A wheel support ramp lO is provided on the outer end of one foot 2. The ramp 10 is defined by a pair of short arms ll perpendicular and connected to the foot 2. The arms ll , , .
., ~, ~ . - ., : .
. . .
.: . : . -.
extend outwardly in a direction oppo~ite to the foot 3.
Plates 13 (Fig. 2) on the arms 11 receive pads 14, which form the top surface of the ramp 10.
An elongated, tubular, cylindrical post 16 is mounted on the foot 3 a sholt di6tance from the inner end thereof.
~-- ~t' ' ~ The post 16 is attached to a shorter bottom tube 17 by a -bolt 18, and i6 supeorted by inclined braces 20 extending - between lugs 21 on the feet 2 and 3, and lug6 22 on the po6t 16 near the upper end thereof.
An elongated arm or boom 24 i6 rotatably mounted on the top end of the po6t 16. The boom 24 can be rotated `~ around the longitudinal axi6 of the post 16 and pivoted t around a horizontal axi6 during lifting. For 6uch purpo~e, the inner end of the boom 24 i6 pivotally connected to a pair of vertical top plates 26 on a bracket 27 by a pin Z8, The bracket 27 iB rotatably mounted on the upper end of the post 16. The bracket 27 include6 vertical and horizontal arms 30 and 31, respectively reinforced by a . diagonal brace 32, and bottom and top mounting plate6 34 ; ~ 20 and 35, respectively. The bottom plate 35 extend6 , outwardly from the junction of the arms 30 and 31. Bolt6 36 extending through the outer free end of the plate 35 carry bearings 38 for riding on the post 16. A pin 39 extends downwardly from the top plate 34 into a bearing 40 in the post 16. Thus, the bracket 27 can be rotated around longitudinal axi6 of the po~t 16.
., ~,.
' , 1 308 1 ~ 1 A rectangular jack ledge 42 with a flange 43 on the outer end thereof is mounted on the outer end of the arm 31 of the bracket 27 by means of a bolt 45 extending through lugs 46 : on the bottom of the ledge 42. During use, the ledge 42 r~;
'`'.~ J 5 supports a small manually operated hydraulic jack 47, the post 49 of which engages a pin 50 extending between the arms of a clevis 52 on the bottom of the boom 24. Thus, extension or retraction of the jack post 49 causes corresponding vertical movement of the boom 24 during pivoting thereof around the pin - 10 28.
A plate 53 with a plurality of holes 54 therein is provided on the bottom of the outer free end of the boom 24 for receiving a swivel hook 55, which supports a tire clamping ~~ device generally indicated at 56 (Figs. 3 and 4). The device 56 includes a pair of identical, elongated, generally C-shaped _ jaws 57 including inclined top arms 58, which are pivotally lnterconnected by a bolt 60 near the upper ends thereof so that the jaws 57 can be operated scissor-fashion to straddle a tire 61 and engage the rim 62 of a wheel 63. The upper ends of the arms 58 are connected to the ends of a chain 64 by clevi~es 65, and the chain is carried by the swivel hook 55 during use. The lower, horizontal arms 66 of the jaws 57 are defined by inverted T-shaped rods carrying bearings 67 at right angles to each other. The bearings are held on the arms ,~"~., 66 by locking collars 68.
" .
, ., ~: , "
`` 130~141 , With reference to Figs. 4 and 5, in a second - embodiment the jaws include one thin, generally C-shaped, planar jaw 70 for straddling the tire 61 from one side thereof (Fig. 5), and an L-shaped rod 72 defining a second jaw for ~ 5 extending over the top of the tire 61. The chain 64 is -~ connected to the horizontal top arm 73 of the jaw 70 by clevises 64 and bolts 75. The rod 72 is slidably mounted in a sleeve 76 welded to one side of the arm 73. A screw 78 with a ~-, handle 79 on the outer end thereof extends through a nut 80 on the sleeve 76 and an aligned hole (not shown) in engagement with the rod 72 for securing the rod in one position. A
bearing 82 and locking collar 83 are provided on the bottom free end of the rod 72 for engaging the other side of the tire 61.
A second bearing 85 and locking collar 86 are ~- mounted on a lug 87 on the vertical arm 88 of the jaw 70.
Third and fourth bearings 90 and 91, respectively are adjustably mounted on the bottom, horizontal arm 93 of the jaw 70 for engaging the interior of the rim 62. The bearings 90 and 91 are mounted on spaced apart support arms 95, which are connected to the arm 93 by bolts (not shown) extending through holes 96 in the arm 93. Bolts 98 in the top ends of the arms 95 carry the bearings 90 and 91.
~ In use, in order to replace a wheel or tire on a ; 25 tractor of the type including wheels in pairs, the tractor is driven onto the frame, i.e. one wheel of a pair of wheels is ~, . ..
:, --~ po6itioned on the ramp 10 to stabilize the frame 1. A6 be6t 6hown in Fig. 1, with the embodiment of clamping device of Fig6. 3 and 4, the jaw6 57 of a clamping device 56 are ~anually po6itioned to 6traddle the tire 61 of the outer wheel 63 of the pair of wheel6. The bearing6 67 are ,~
a placed again6t the rim 62 of the wheel 63, with the outermost of each pair of bearings 67 against the beaded outer periphery of the rim. When the device of Figs. 5 and 6 i6 used, the 6crew 78 i6 loosened, and the device is placed on a wheel 60 that the bearing6 90 and 91 engage the rim on one 6ide of the wheel and the bearing 82 presses against the opposite side of the tire. A jack 47 i6 placed on the ledge 42 with the post 49 of the jack in engagement with the pin 50. By manually operating the jack 47, the boom 24 i6 caused to rise. Thus, the chain 64 is pulled upwardly with the jaws 57 or 70 and 72 and the wheel 63.
Because of the scissors action of the jaws 57, lifting of the device 56 of Figs. 3 and 4 tend6 to force the bottom end~ of the 3aws 57 together, preventing 3aw ~eparation and ao unintentional dropping of a wheel 63. The rod 72 defining ~- ~ the gecond jaw of the second embodiment of clamping device performs the same function.
It will be appreciated that while the lifting : ,~
~ apparatug described herein is primarily intended for use ; ~Po. 25 with dual wheel vehicles, by holding the frame 1 down, the apparatus could be used with single wheel vehicles, i.e.
,~, ~ G
. .
., , :
..... .
Claims (10)
1. An apparatus for lifting a large tractor wheel or the like comprising first jaw means; second jaw means connected to said first jaw means for straddling the tire portion of the wheel; first bearing means on said first jaw means for engaging the rim of the wheel on one side of the wheel; second bearing means on said second jaw means for engaging the other side of the wheel; and chain means connected to a top end of at least one said first and second jaw means for lifting both said jaw means.
2. An apparatus according to claim 1, including frame means for carrying said chain means, and consequently said first and second jaw means in an elevated position, and for raising and lowering a wheel grasped by said first and second jaw means.
3. An apparatus according to claim 2, including ramp means on said frame means for receiving one of a pair of wheels for stabilizing the frame means while the other wheel of said pair of wheels is raised or lowered.
4. An apparatus according to claim 2, wherein said frame means includes elongated foot means, post means extending upwardly from said foot means; and boom means carrying said chain means pivotally mounted on said post means for rotation around a horizontal axis for raising and lowering a wheel.
5. An apparatus according to claim 4, including bracket means on said frame means carrying said boom means for rotation around said horizontal axis, said bracket means being rotatably mounted on said post means for rotation around the longitudinal axis thereof.
6. An apparatus according to claim 5, including pad means on said bracket means for supporting a jack in contact with said boom means.
7. An apparatus according to claim 1, including pivot means pivotally connecting said first jaw means to said second jaw means, whereby said first and second jaw means can be operated scissors fashion.
8. An apparatus according to claim 7, wherein said first and second jaw means are generally C-shaped, and said bearing means are mounted on the bottom arms of their respective jaw means.
9. An apparatus according to claim 1, wherein said first jaw means is generally C-shaped, said first bearing means being mounted on the vertical and bottom arms thereof for engaging the rim and one side of a wheel, and said second jaw means is an inverted L-shape, said second jaw means being connected to the top arm of said first jaw means for straddling the top of a wheel; and said second bearing means is mounted on the bottom free end of said second jaw means for engaging the other side of the wheel.
10. An apparatus according to claim 1, including sleeve means on said first jaw means for slidably receiving one end of said second jaw means; and clamp means on said sleeve means for securing said second jaw means fixed with respect to said first jaw means in a wheel engaging position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000592904A CA1308141C (en) | 1989-02-27 | 1989-02-27 | Wheel clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000592904A CA1308141C (en) | 1989-02-27 | 1989-02-27 | Wheel clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1308141C true CA1308141C (en) | 1992-09-29 |
Family
ID=4139730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000592904A Expired - Lifetime CA1308141C (en) | 1989-02-27 | 1989-02-27 | Wheel clamp |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1308141C (en) |
-
1989
- 1989-02-27 CA CA000592904A patent/CA1308141C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |