CA2117128A1 - Wheel replacement dolly for heavy vehicles - Google Patents
Wheel replacement dolly for heavy vehiclesInfo
- Publication number
- CA2117128A1 CA2117128A1 CA002117128A CA2117128A CA2117128A1 CA 2117128 A1 CA2117128 A1 CA 2117128A1 CA 002117128 A CA002117128 A CA 002117128A CA 2117128 A CA2117128 A CA 2117128A CA 2117128 A1 CA2117128 A1 CA 2117128A1
- Authority
- CA
- Canada
- Prior art keywords
- frame
- dolly
- wheels
- wheel
- flange
- 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
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B11/00—Units comprising multiple wheels arranged side by side; Wheels having more than one rim or capable of carrying more than one tyre
- B60B11/10—Emergency wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/10—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by supports specially adapted to objects of definite shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2202/00—Indexing codes relating to type or characteristics of transported articles
- B62B2202/90—Vehicles
Abstract
A wheel replacement dolly for heavy vehicle includes a frame having a top and a bottom. There is an annular flange at the top of the frame which has a plurality of circumferentially spaced-apart bolt holes. A plurality of wheels are rotatably mounted on the bottom of the frame. Preferably the frame is triangular, having a bottom with two ends. The wheels are then mounted at the ends of the bottom. The frame may have two sides with a stub axle extending from each side of the frame at each end thereof. Four wheels are mounted on the stub axles.
Description
W~ ;L REPLACEMENT DOLLY FOR HEAVY VEH~CLES
BACKGROUND OF THE INVENTION
5 This invention relates to dollies for replacing seized wheels, typically on heavy vehicles.
Wheel seizure on a vehicle can occur when a rear axle becomes locked, for example due to wheel bearing failure, a locked diLlerenlial or because of an accident. Towing 10 is not always possible, particularly for rear a~des because of the difficulty of lifting certain vehicles from the rear. This is particularly true for artic~lating buses which cannot be picked up from either the front or the rear due to the turntable mechanism located near the center of the bus. Most large vehicles with one or more rear axles conventionally must be loaded onto flat bed vehicles for transport to a repair garage.
It would be desirable to provide some means for easily towing such vehicles to arepair location or allowing them to be driven under their own power despite a seized wheel.
20 Devices for this general purpose have been suggested in the past, such as in United States Patent No. 1,650,031 to Nash. This patent discloses a combination dolly and jack. The dolly has two wheels and is attached to the axle of the vehicle and fits under the tire.
United States Patent No. 1,681,665 to Haynes shows an emergency wheel for vehicles.
A smaller wheel takes some of the weight off a damaged wheel instead of replacing it.
United States Patent No. 4,629,388 to Riemer shows a towing aid for vehicles. This device is intended for use on rail bound vehicles.
However, such earlier devices are often not well adapted for replacing seized wheels on heavy vehicles such as buses, particularly artir~ ting buses. In some instances
BACKGROUND OF THE INVENTION
5 This invention relates to dollies for replacing seized wheels, typically on heavy vehicles.
Wheel seizure on a vehicle can occur when a rear axle becomes locked, for example due to wheel bearing failure, a locked diLlerenlial or because of an accident. Towing 10 is not always possible, particularly for rear a~des because of the difficulty of lifting certain vehicles from the rear. This is particularly true for artic~lating buses which cannot be picked up from either the front or the rear due to the turntable mechanism located near the center of the bus. Most large vehicles with one or more rear axles conventionally must be loaded onto flat bed vehicles for transport to a repair garage.
It would be desirable to provide some means for easily towing such vehicles to arepair location or allowing them to be driven under their own power despite a seized wheel.
20 Devices for this general purpose have been suggested in the past, such as in United States Patent No. 1,650,031 to Nash. This patent discloses a combination dolly and jack. The dolly has two wheels and is attached to the axle of the vehicle and fits under the tire.
United States Patent No. 1,681,665 to Haynes shows an emergency wheel for vehicles.
A smaller wheel takes some of the weight off a damaged wheel instead of replacing it.
United States Patent No. 4,629,388 to Riemer shows a towing aid for vehicles. This device is intended for use on rail bound vehicles.
However, such earlier devices are often not well adapted for replacing seized wheels on heavy vehicles such as buses, particularly artir~ ting buses. In some instances
2 2117128 they are too difficult to install. In other cases they are not sturdy enough, or would not provide enough stability, to be driven relatively long distances in place of the conventional wheel.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an i"lprov~d for easily driving or towing a heavy vehicle, such as a bus, to a repair location with a seized wheel.
10 It is also an object of the invention to provide an h~ ovt;d device for allowing heavy vehicles with seized wheels to be towed or driven which is simple and rugged in construction.
It is another object of the invention to provide an illlploved wheel replacement dolly 15 which is easy to install using only conventional tools such as wrenches and jacks.
It is a further object of the invention to provide an improved wheel replacement dolly for heavy vehicles which provides enough support and stability so the vehicle can be driven for significant distances to a repair location.
It is a still further object of the invention to provide an improved wheel replacement dolly which supports a seized axle the same distance above the ground as the conventional wheel and tire.
25 It is a still further object of the invention to provide an hllpLov~;d wheel replacement dolly which does not extend further from the side of the vehicle than the wheel well.
In accordance with these objects, there is provided a wheel replacement dolly for heavy vehicles which includes a flame having a top and a bottom. There is annular 30 flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes. A plurality of wheels are rotatably mounted on the bottom of the frame.
211~ t28
SUMMARY OF THE INVENTION
It is an object of the invention to provide an i"lprov~d for easily driving or towing a heavy vehicle, such as a bus, to a repair location with a seized wheel.
10 It is also an object of the invention to provide an h~ ovt;d device for allowing heavy vehicles with seized wheels to be towed or driven which is simple and rugged in construction.
It is another object of the invention to provide an illlploved wheel replacement dolly 15 which is easy to install using only conventional tools such as wrenches and jacks.
It is a further object of the invention to provide an improved wheel replacement dolly for heavy vehicles which provides enough support and stability so the vehicle can be driven for significant distances to a repair location.
It is a still further object of the invention to provide an improved wheel replacement dolly which supports a seized axle the same distance above the ground as the conventional wheel and tire.
25 It is a still further object of the invention to provide an hllpLov~;d wheel replacement dolly which does not extend further from the side of the vehicle than the wheel well.
In accordance with these objects, there is provided a wheel replacement dolly for heavy vehicles which includes a flame having a top and a bottom. There is annular 30 flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes. A plurality of wheels are rotatably mounted on the bottom of the frame.
211~ t28
- 3 -Preferably the frame is triangular, having a bottom with two ends. The wheels are mounted at the ends of the bottom. For example, there may be four wheels, two ateach end of the bottom of the frame. There may be a stub axle extending from each side of the frame at each end thereof. The wheels are mounted on the stub axles.
There may be an adapter flange connected to the ~nn~ r flange. The adapter flange has ch.;ulllferentially spaced-apart, radially elongated slots.
Compared to some earlier devices of this general type, the invention offer .~ignifit~.~nt 10 advantages. For one thing, it can be installed on one side of a disabled vehicle which can then be driven under its own power. The device can also be installed on bothsides of a vehicle. The vehicle must be towed if the device is on both ends of the drive axle.
15 Wheel replacement dollies according to the invention can be easily installed in place of the conventional wheel on the existing wheel hub. It can be mounted on the front of the vehicle as well as the rear.
The invention allows disabled vehicles to be driven safely even up to highway speeds 20 of 80 km/h.
BRIEF OF DESCRIPTION OF THE DRAWINGS
In drawings which illustrate embodiments of the invention:
Fig. 1 is a perspective view of a wheel replacement dolly according to an embodiment of the invention shown installed on the wheel hub of a vehicle, the vehicle being shown in fragment;
Fig. 2 is a sectional view taken along line 2-2 of Fig. 1;
Fig. 3 is a front view of the ~nn~ r flange and adapter flange for adapting the 21171~8
There may be an adapter flange connected to the ~nn~ r flange. The adapter flange has ch.;ulllferentially spaced-apart, radially elongated slots.
Compared to some earlier devices of this general type, the invention offer .~ignifit~.~nt 10 advantages. For one thing, it can be installed on one side of a disabled vehicle which can then be driven under its own power. The device can also be installed on bothsides of a vehicle. The vehicle must be towed if the device is on both ends of the drive axle.
15 Wheel replacement dollies according to the invention can be easily installed in place of the conventional wheel on the existing wheel hub. It can be mounted on the front of the vehicle as well as the rear.
The invention allows disabled vehicles to be driven safely even up to highway speeds 20 of 80 km/h.
BRIEF OF DESCRIPTION OF THE DRAWINGS
In drawings which illustrate embodiments of the invention:
Fig. 1 is a perspective view of a wheel replacement dolly according to an embodiment of the invention shown installed on the wheel hub of a vehicle, the vehicle being shown in fragment;
Fig. 2 is a sectional view taken along line 2-2 of Fig. 1;
Fig. 3 is a front view of the ~nn~ r flange and adapter flange for adapting the 21171~8
- 4 -replacement dolly for different size wheels; and Fig. 4 is a perspective view of a brake drum and a brake drum cradle ~tt~hment for the dolly.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings, and first to Fig. 1, these show a replacement dolly generally at 10 which is intended for use on a heavy vehicle 12 such as a bus. The vehicle is conventional and has at least four wheels, each being provided with a wheel hub 14 which is conventional in design, having a plurality of spaced-apart threaded studs 16, normally used to secure the wheel rim to the hub. Each wheel is located in this example in a wheel well 18, again according to the conventional arrangement.
However, Fig. 1 shows the dolly 10 installed in place of the usual rim equipped with a rubber tire. The dolly has a triangular frame 20 having a top 24 and a bottom 26 as shown in Fig. 1, and a first side 28 and a second side 30 shown in Fig. 2. There is a bottom member 22 extending along the bottom 26. In this embodiment the bottom member is a box section, having a first end 32 and a second end 34.
The frame also has two side members 36 and 38 which extend upwardly from the ends of the bottom member lowards the top 24 of the frame. These members are also box sections in this embodiment.
An annular flange 40, shown in Fig. 1 and Fig. 3, is connected to the top of the frame and is supported thereby. The flange includes an outer cylindrical band 42 and an ~nn~ r disk 44 inside the band and connected thereto. A plurality of gussets 46 are spaced-apart circu-llrerentially about the inside of the band and the outer periphery of the disk and are connected to both. The disk has a plurality of spaced-apart bolt holes 47 arranged in a circle as shown in Fig. 3. An adapter flange 48 is connected to the flange 40 by a plurality of nuts and bolts 49 extending through the bolt holes 47 and corresponding holes in the adapter flange. The adapter flange is fitted against 2~1712g
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings, and first to Fig. 1, these show a replacement dolly generally at 10 which is intended for use on a heavy vehicle 12 such as a bus. The vehicle is conventional and has at least four wheels, each being provided with a wheel hub 14 which is conventional in design, having a plurality of spaced-apart threaded studs 16, normally used to secure the wheel rim to the hub. Each wheel is located in this example in a wheel well 18, again according to the conventional arrangement.
However, Fig. 1 shows the dolly 10 installed in place of the usual rim equipped with a rubber tire. The dolly has a triangular frame 20 having a top 24 and a bottom 26 as shown in Fig. 1, and a first side 28 and a second side 30 shown in Fig. 2. There is a bottom member 22 extending along the bottom 26. In this embodiment the bottom member is a box section, having a first end 32 and a second end 34.
The frame also has two side members 36 and 38 which extend upwardly from the ends of the bottom member lowards the top 24 of the frame. These members are also box sections in this embodiment.
An annular flange 40, shown in Fig. 1 and Fig. 3, is connected to the top of the frame and is supported thereby. The flange includes an outer cylindrical band 42 and an ~nn~ r disk 44 inside the band and connected thereto. A plurality of gussets 46 are spaced-apart circu-llrerentially about the inside of the band and the outer periphery of the disk and are connected to both. The disk has a plurality of spaced-apart bolt holes 47 arranged in a circle as shown in Fig. 3. An adapter flange 48 is connected to the flange 40 by a plurality of nuts and bolts 49 extending through the bolt holes 47 and corresponding holes in the adapter flange. The adapter flange is fitted against 2~1712g
- 5 -the annular flange from behind the latter from the point of view of Fig. 1 and 3. The adapter flange has radially elongated bolt apertures 51, which are spaced apart circumferentially thereabout, and a large central aperture 53 for receiving wheel hub 14 as shown in Fig. 3. The studs 16 of the hub extend through the apertures 15.
Nuts 17 are fitted on the studs, only one of which is shown in Fig. 1. The elongated apertures 51 allow the dolly to fit a variety of wheels having diLrerelll diameters between the wheels studs.
The frame 20 of this embodiment also includes a vertical support member 50 whichextends between the bottom of the ~nn~ r flange 40 and the top of the bottom member 22 as seen in Fig. 1. This member helps di~ ule the load over the entire member 22.
There are short box sections 54 and 56 at the ends 32 and 34 of the bottom member 22 respectively. These members extend perpendicularly with respect to the bottommember to each side 28 and 30 of the frame. Plates 58 and 60 are connected to the ends of box section 54. These plates are round in this embodiment. Similar plates 62 and 64 are connected to the ends of box section 56.
A stub axle 66 is connected to each of the plates as illustrated for plate 58. There is an aperture 68 in each of the plates for receiving the stub a~e. In this embodiment all of the connections between the frame members, the ~nm~ r flange and components thereof and the stub a~es are welded. However it should be understoodthat other conventional connections could be subsliluled including various fasteners.
Furthermore, the shape of the frame and the types of components used are not critical and could be altered by someone skilled in the art.
The dolly 10 has four wheels including two outside wheels 70 and 72 and two inside wheels 74 and 76, all of which are shown in Fig. 1. The wheels are all the same and include a rim 78 and a hub 80 as shown for wheel 70 in Fig. 1 and 2. As seen in Fig.
2, each wheel hub has interior roller bearings 82 and 84 and are conventional indesign. The roller bearings serve as means for rotatably mounting the wheels on the 211~128
Nuts 17 are fitted on the studs, only one of which is shown in Fig. 1. The elongated apertures 51 allow the dolly to fit a variety of wheels having diLrerelll diameters between the wheels studs.
The frame 20 of this embodiment also includes a vertical support member 50 whichextends between the bottom of the ~nn~ r flange 40 and the top of the bottom member 22 as seen in Fig. 1. This member helps di~ ule the load over the entire member 22.
There are short box sections 54 and 56 at the ends 32 and 34 of the bottom member 22 respectively. These members extend perpendicularly with respect to the bottommember to each side 28 and 30 of the frame. Plates 58 and 60 are connected to the ends of box section 54. These plates are round in this embodiment. Similar plates 62 and 64 are connected to the ends of box section 56.
A stub axle 66 is connected to each of the plates as illustrated for plate 58. There is an aperture 68 in each of the plates for receiving the stub a~e. In this embodiment all of the connections between the frame members, the ~nm~ r flange and components thereof and the stub a~es are welded. However it should be understoodthat other conventional connections could be subsliluled including various fasteners.
Furthermore, the shape of the frame and the types of components used are not critical and could be altered by someone skilled in the art.
The dolly 10 has four wheels including two outside wheels 70 and 72 and two inside wheels 74 and 76, all of which are shown in Fig. 1. The wheels are all the same and include a rim 78 and a hub 80 as shown for wheel 70 in Fig. 1 and 2. As seen in Fig.
2, each wheel hub has interior roller bearings 82 and 84 and are conventional indesign. The roller bearings serve as means for rotatably mounting the wheels on the 211~128
- 6 -stub a~es 66. The outer wheels 70 and 72 are positioned so they extend outwardlyfrom the vehicle the same distance as the conventional wheel and within the wheel well 18 in this example.
5 In an alternative embodiment the adapter flange 48 is deleted. The :~nn~ r flange 40 and its bolt holes 47 are then dimensioned to fit a particular wheel.
An operation, if some problem is encountered which prevents normal rotation of awheel on the vehicle 12, the axle of the vehicle is jacked up to raise the wheel off the 10 ground. The wheel is then removed in the conventional manner by unthreading the nuts received on stud 16 and pulling off the wheel. The dolly can easily be slipped in position over the hub 14 and the nuts put back in place to secure the dolly in position. In many cases the vehicle can then be driven back to a repair location, even if the disabled wheel is a drive wheel. If so, the dirrerenlial allows the wheel on the 15 opposite side of the vehicle to power it back to the repair location.
In some instances, for example if the studs 16 are sheared, it may not be possible to bolt the wheel to the dolly as described above. In this instance a brake drum cradle 90, shown in Fig. 4, is utilized. The cradle is a hollow semi-cylinder with a semi-20 circular flange 91 at one end. The flange has a plurality of bolt holes 93 which areused to connect the cradle to the dolly by means of its bolt ape-lures 51. The cradle has a channel 94. Brake drum 92 of a vehicle is lowered onto the cradle so its flange 96 rests in the channel.
25 It should be understood that many of the details provided above are by way ofexample only and can be altered or deleted without departing from the scope of the invention which is to be inlellJreted with lererellce to the following claims.
5 In an alternative embodiment the adapter flange 48 is deleted. The :~nn~ r flange 40 and its bolt holes 47 are then dimensioned to fit a particular wheel.
An operation, if some problem is encountered which prevents normal rotation of awheel on the vehicle 12, the axle of the vehicle is jacked up to raise the wheel off the 10 ground. The wheel is then removed in the conventional manner by unthreading the nuts received on stud 16 and pulling off the wheel. The dolly can easily be slipped in position over the hub 14 and the nuts put back in place to secure the dolly in position. In many cases the vehicle can then be driven back to a repair location, even if the disabled wheel is a drive wheel. If so, the dirrerenlial allows the wheel on the 15 opposite side of the vehicle to power it back to the repair location.
In some instances, for example if the studs 16 are sheared, it may not be possible to bolt the wheel to the dolly as described above. In this instance a brake drum cradle 90, shown in Fig. 4, is utilized. The cradle is a hollow semi-cylinder with a semi-20 circular flange 91 at one end. The flange has a plurality of bolt holes 93 which areused to connect the cradle to the dolly by means of its bolt ape-lures 51. The cradle has a channel 94. Brake drum 92 of a vehicle is lowered onto the cradle so its flange 96 rests in the channel.
25 It should be understood that many of the details provided above are by way ofexample only and can be altered or deleted without departing from the scope of the invention which is to be inlellJreted with lererellce to the following claims.
Claims (10)
1. A wheel replacement dolly for heavy vehicles, comprising:
a frame having a top and a bottom;
an annular flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes; and a plurality of wheels rotatably mounted on the bottom of the frame.
a frame having a top and a bottom;
an annular flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes; and a plurality of wheels rotatably mounted on the bottom of the frame.
2. A dolly as claimed in claim 1, wherein the frame is triangular, having a bottom with two ends, the wheels being mounted at the ends of the bottom.
3. A dolly as claimed in claim 2, wherein there are four said wheels, two said wheels at each end of the bottom of the frame.
4. A dolly as claimed in claim 3, wherein the frame has two sides and there is astub axle extending from each said side of the frame at each said end thereof, the wheels being mounted on the stub axles.
5. A dolly as claimed in claim 2, wherein the frame has two side members extending between the ends of the bottom and the flange.
6. A dolly as claimed in claim 1, wherein the bolt holes are radially elongated slots.
7. A dolly as claimed in claim 1, wherein an adapter flange is connected to saidannular flange, said adapter flange having circumferentially spaced-apart, radially elongated slots.
8. A dolly as claimed in claim 1, having a semi-cylindrical hollow cradle connected to the flange configured to receive a brake drum of a vehicle.
9. A vehicle having a plurality of wheels, each said wheel having a hub with a plurality of circumferentially spaced-apart bolts, at least one said wheel beingfitted with a replacement dolly including a frame having a top and a bottom, an annular flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes, the bolts of the one wheel extending through the bolt holes, and a plurality of wheels rotatably mounted on the bottom of the frame.
10. A wheel replacement dolly for heavy vehicles, comprising:
a triangular frame having two sides, a bottom with two ends and two sides;
an annular flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes;
four stub axles connected to the bottom of the frame, one said stub axle extending from each said side of the frame at each said end thereof; and four wheels, each said wheel being rotatably received on one of the stub axles.
a triangular frame having two sides, a bottom with two ends and two sides;
an annular flange at the top of the frame having a plurality of circumferentially spaced-apart bolt holes;
four stub axles connected to the bottom of the frame, one said stub axle extending from each said side of the frame at each said end thereof; and four wheels, each said wheel being rotatably received on one of the stub axles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002117128A CA2117128A1 (en) | 1994-03-07 | 1994-03-07 | Wheel replacement dolly for heavy vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002117128A CA2117128A1 (en) | 1994-03-07 | 1994-03-07 | Wheel replacement dolly for heavy vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2117128A1 true CA2117128A1 (en) | 1995-09-08 |
Family
ID=4153038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002117128A Abandoned CA2117128A1 (en) | 1994-03-07 | 1994-03-07 | Wheel replacement dolly for heavy vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2117128A1 (en) |
-
1994
- 1994-03-07 CA CA002117128A patent/CA2117128A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |