CA1049494A - Transportable trailer with selectively positionable wheels - Google Patents
Transportable trailer with selectively positionable wheelsInfo
- Publication number
- CA1049494A CA1049494A CA312,759A CA312759A CA1049494A CA 1049494 A CA1049494 A CA 1049494A CA 312759 A CA312759 A CA 312759A CA 1049494 A CA1049494 A CA 1049494A
- Authority
- CA
- Canada
- Prior art keywords
- support structure
- trailer
- frame
- drum
- wheel support
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/1825—Mixers of the tilted-drum type, e.g. mixers pivotable about an axis perpendicular to the axis of rotation for emptying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
ABSTRACT
In a transportable concrete, mortar or plaster mixer of the trailer type having a mixing drum which is tiltable about a longitudinal axis for discharging its contents to one side, the trailer wheels are mounted on support structure pivotally connected to the underside of the trailer adjacent to its rear end. The support structure can be swung about its pivot to bring the wheels from a normal transporting position to a rearward position at which they are well clear of the drum so as not to interfere with discharge of the contents. The support structure can be locked in each of its operative positions.
In a transportable concrete, mortar or plaster mixer of the trailer type having a mixing drum which is tiltable about a longitudinal axis for discharging its contents to one side, the trailer wheels are mounted on support structure pivotally connected to the underside of the trailer adjacent to its rear end. The support structure can be swung about its pivot to bring the wheels from a normal transporting position to a rearward position at which they are well clear of the drum so as not to interfere with discharge of the contents. The support structure can be locked in each of its operative positions.
Description
~L~4949~L
This invention relates to transportable mixers of the trailer type such as, for example, concrete, mortar and plaster mixers. The invention is particularly concerned with transportable mixers of the type comprising a two-wheeled trailer having a longitudinally extending frame having front and rear ends, a mixing drum carried by the frame and pivotal support means for the drum defining a longitudinal pivotal axis about which the drum is tiltable for discharging the contents of the drum to one side of the trailer. In the case of a concrete mixer the mixing drum is rotatably mounted and is typically carried by a U-shaped support cradle partially embracing the drum.
One problem with this type of mixer is that the road wheels of the trailer, to facilitate towing of the trailer, have to be placed at a position at which they are inconveniently near to the drum and tend to interfere with discharging from the drum to one side of the trailer. On the other hand, if the wheels are positioned clear of the drum so as not to interfere with discharging operations, the weight distribution of the trailer is necessarily such as to make towing difficult or unsafe.
According to the present invention these difficulties ~ -are overcome without unduly complicating the trailer construction by mounting the road wheels of the trailer on an axle carried by the free end of support structure which is pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, the support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer, such that the road wheels are suitably positioned for transportation, and ' ~494~4 second position at which the wheel axle extends rearwardly of the rear end of the trailer, such that the road whe~ls are well clear of the mixing drum. First and second locking means are provided for lockiny the wheel support structure in each of its first and second operative positions.
One embodiment of the invention, as applied to a transportable concrete mixer of the type re~Eerred to, will now be described by way of example with reference to the accompanying drawings. In the drawings, Figure 1 is a perspective view of the mixer;
Figure 2 is a side elevational view showing the mixer in its towing position; and Figure 3 is a side elevational view showing the mixer set up at a site and ready for use.
Referring to the drawings, the transportable concrete mixer comprises a trailer having a longitudinally extending frame 10. At the forward end of the trailer frame is a hitch member 11 for coupling to a tractor, and extending from the rear end of the trailer frame is a shelf 12 on which is mounted a motor 13 for driving a mixing drum 14.
The mixing drum 14 is of the conventional type, being rotatable about its axis and having a frusto-conical dis-charge section 15 with a central discharge opening 16. The mixing drum 14 is encircled by a ring gear 17 by which drive is imparted for rotating the drum about its axis. The drum is supported by, and rotatably mounted upon, a substantially U-shaped cradle 18 which partially embraces the drum. The upper ends of the legs of U-shaped cradle are journalled on respective coaxial stub axles 19, 20l as illustrated at 21 and 22. These stub axles extend from respective bearing blocks 23, 2~ at the upper ends of vertical frames 25, 26 on the trailer frame 10. Thus the stub axles 19, 20 define a horizontal, longitudinal axis about which the U-shaped ~9494 cradle 18 may be tilted to bring the mixing drum 14 from the upright position shown to a dumping position. The motor 13 is coupled to the stub axle 19 by a belt and pulley drive 27, the stub axle carrying at its inner end a bevel gear 28 which is in engagement with the ring gear 17. The motor 13, being mounted on the trailer, is thus operatively coupled to the mixing drum for rotating the drum.
The trailer has a pair of road wheels 29, 30 mounted on a transverse wheel axle 31 carried by a wheel support structure 32. The wheel support structure 32 is pivotally connected at 33 to the underside of the trailer frame 10 adjacent to the rear end of the trailer frame. The arrangement is such that the wheel support structure can be swung between two operative positions, namely the normal towing position shown in Figure 2 and the normal "in use on site" position shown in Figure 3. It will be seen from the drawings that, when the wheel support structure 32 is swung to the latter position, the road wheels 29, 30 are moved rearwardly so as to clear the drum and thereby fac-ilitate dumping, and in addition the trailer is raised tobring the drum to a convenient working height. In this connection it should be mentioned that, for road transportation, the centre oE gravity of the assembly should be as low as possible, whereas it is desirable that the mixing drum be raised for working on site.
The wheel support structure can be ~ocked in each o its two operative positions. For this purpose front and rear keeper members 34, 35 are provided on the trailer frame 10, these keeper members having holes 36, 37 which align with respective suitably positioned holes 38, 39 in the wheel support structure in each of its two operative positions. A locking pin 40, engageable with the aligned sets of holes, is provided to secure the wheel support structure 1~49494 as required.
The front vertical frame member 26 includes a stanchion which extends below the trailer frame 10 and has a foot 41 at its bottom end. As illustrated in Figure 3, the front end of the mixer is supported when in use on site by the foot 41, which has a wide base enabling it to rest on any suitably improvised support, such as a set of blocks 42~
_ 4 _ : . . . ' ' :. -. :
This invention relates to transportable mixers of the trailer type such as, for example, concrete, mortar and plaster mixers. The invention is particularly concerned with transportable mixers of the type comprising a two-wheeled trailer having a longitudinally extending frame having front and rear ends, a mixing drum carried by the frame and pivotal support means for the drum defining a longitudinal pivotal axis about which the drum is tiltable for discharging the contents of the drum to one side of the trailer. In the case of a concrete mixer the mixing drum is rotatably mounted and is typically carried by a U-shaped support cradle partially embracing the drum.
One problem with this type of mixer is that the road wheels of the trailer, to facilitate towing of the trailer, have to be placed at a position at which they are inconveniently near to the drum and tend to interfere with discharging from the drum to one side of the trailer. On the other hand, if the wheels are positioned clear of the drum so as not to interfere with discharging operations, the weight distribution of the trailer is necessarily such as to make towing difficult or unsafe.
According to the present invention these difficulties ~ -are overcome without unduly complicating the trailer construction by mounting the road wheels of the trailer on an axle carried by the free end of support structure which is pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, the support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer, such that the road wheels are suitably positioned for transportation, and ' ~494~4 second position at which the wheel axle extends rearwardly of the rear end of the trailer, such that the road whe~ls are well clear of the mixing drum. First and second locking means are provided for lockiny the wheel support structure in each of its first and second operative positions.
One embodiment of the invention, as applied to a transportable concrete mixer of the type re~Eerred to, will now be described by way of example with reference to the accompanying drawings. In the drawings, Figure 1 is a perspective view of the mixer;
Figure 2 is a side elevational view showing the mixer in its towing position; and Figure 3 is a side elevational view showing the mixer set up at a site and ready for use.
Referring to the drawings, the transportable concrete mixer comprises a trailer having a longitudinally extending frame 10. At the forward end of the trailer frame is a hitch member 11 for coupling to a tractor, and extending from the rear end of the trailer frame is a shelf 12 on which is mounted a motor 13 for driving a mixing drum 14.
The mixing drum 14 is of the conventional type, being rotatable about its axis and having a frusto-conical dis-charge section 15 with a central discharge opening 16. The mixing drum 14 is encircled by a ring gear 17 by which drive is imparted for rotating the drum about its axis. The drum is supported by, and rotatably mounted upon, a substantially U-shaped cradle 18 which partially embraces the drum. The upper ends of the legs of U-shaped cradle are journalled on respective coaxial stub axles 19, 20l as illustrated at 21 and 22. These stub axles extend from respective bearing blocks 23, 2~ at the upper ends of vertical frames 25, 26 on the trailer frame 10. Thus the stub axles 19, 20 define a horizontal, longitudinal axis about which the U-shaped ~9494 cradle 18 may be tilted to bring the mixing drum 14 from the upright position shown to a dumping position. The motor 13 is coupled to the stub axle 19 by a belt and pulley drive 27, the stub axle carrying at its inner end a bevel gear 28 which is in engagement with the ring gear 17. The motor 13, being mounted on the trailer, is thus operatively coupled to the mixing drum for rotating the drum.
The trailer has a pair of road wheels 29, 30 mounted on a transverse wheel axle 31 carried by a wheel support structure 32. The wheel support structure 32 is pivotally connected at 33 to the underside of the trailer frame 10 adjacent to the rear end of the trailer frame. The arrangement is such that the wheel support structure can be swung between two operative positions, namely the normal towing position shown in Figure 2 and the normal "in use on site" position shown in Figure 3. It will be seen from the drawings that, when the wheel support structure 32 is swung to the latter position, the road wheels 29, 30 are moved rearwardly so as to clear the drum and thereby fac-ilitate dumping, and in addition the trailer is raised tobring the drum to a convenient working height. In this connection it should be mentioned that, for road transportation, the centre oE gravity of the assembly should be as low as possible, whereas it is desirable that the mixing drum be raised for working on site.
The wheel support structure can be ~ocked in each o its two operative positions. For this purpose front and rear keeper members 34, 35 are provided on the trailer frame 10, these keeper members having holes 36, 37 which align with respective suitably positioned holes 38, 39 in the wheel support structure in each of its two operative positions. A locking pin 40, engageable with the aligned sets of holes, is provided to secure the wheel support structure 1~49494 as required.
The front vertical frame member 26 includes a stanchion which extends below the trailer frame 10 and has a foot 41 at its bottom end. As illustrated in Figure 3, the front end of the mixer is supported when in use on site by the foot 41, which has a wide base enabling it to rest on any suitably improvised support, such as a set of blocks 42~
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Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a transportable mixer of the type comprising a two-wheeled trailer having a longitudinally extending frame having front and rear ends, a rotary mixing drum having a frusto-conical discharge section with a restricted opening therein through which the contents of the drum may be discharged, a support cradle upon which the drum is rotatably mounted, pivotal support means on said frame defining a longitudinal axis, the support cradle being supported by said pivotal support means and tiltable about said long-itudinal axis for discharging the contents of the drum to one side of the trailer, and drive means mounted on the trailer and operatively coupled to the mixing drum for rotating the drum, the improvement comprising:
a wheel support structure pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, an axle carried by the free end of said wheel support structure, a pair of road wheels mounted on the axle, the support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer and a second position at which the wheel axle extends rearwardly of said rear end, first means for locking the support structure in its first position, and second means for locking the support structure in its second position.
a wheel support structure pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, an axle carried by the free end of said wheel support structure, a pair of road wheels mounted on the axle, the support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer and a second position at which the wheel axle extends rearwardly of said rear end, first means for locking the support structure in its first position, and second means for locking the support structure in its second position.
2. A transportable mixer as claimed in claim 1, the support cradle comprising a substantially U-shaped member partially embracing the mixing drum and providing a pair of cradle arms connected to said pivotal support means.
3. A transportable mixer as claimed in claim 1, wherein the first and second locking means comprise a pair of longitudinally spaced apertured keeper members mounted on said frame, the wheel support structure having an aperture therein which is registrable with the apertures of the keeper members in the first and second positions of the wheel support structure, respectively, and a locking pin engageable with the registering apertures for securing the wheel support structure in each of said first and second positions.
4. A transportable mixer as claimed in claim 3, wherein the wheel support structure is pivoted to the trailer frame at a position nearer to the rearward one of said keeper members than to the forward keeper member, whereby the trailer frame is raised as the wheel support structure is moved from the first to the second position.
5. A transportable mixer as claimed in claim 4, wherein the frame provides stanchion means at its front end for supporting said front end of the frame from the ground when the trailer is detached from a towing vehicle.
6. In a transportable mixer of the type comprising a two-wheeled trailer having a longitudinally extending frame having front and rear ends, a mixing drum carried by the frame and pivotal support means for the drum defining a longitudinal pivotal axis about which the drum is tiltable for discharging the contents of the drum to one side of the trailer, the improvement comprising:
a wheel support structure pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, an axle carried by the free end of said wheel support structure, a pair of road wheels mounted on the axle, he support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer and a second position at which the wheel axle extends rearwardly of said rear end, first means for locking the support structure in its first position,and second means for locking the support structure in its second position.
a wheel support structure pivotally connected to the underside of the trailer frame adjacent its rear end for pivotal movement about a transverse axis, an axle carried by the free end of said wheel support structure, a pair of road wheels mounted on the axle, he support structure being pivotally movable between a first position at which the wheel axle extends beneath a mid-region of the trailer and a second position at which the wheel axle extends rearwardly of said rear end, first means for locking the support structure in its first position,and second means for locking the support structure in its second position.
7. A transportable mixer as claimed in claim 6, wherein the first and second locking means comprise a pair of longitudinally spaced apertured keeper members mounted on said frame, the wheel support structure having an aperture therein which is registrable with the apertures of the keeper members in the first and second positions of the wheel support structure, respectively, and a locking pin engageable with the registering apertures for securing the wheel support structure in each of said first and second positions.
8. A transportable mixer as claimed in claim 7, wherein the wheel support structure is pivoted to the trailer frame at a position nearer to the rearward one of said keeper members than to the forward keeper member, whereby the trailer frame is raised as the wheel support structure is moved from the first to the second position.
9. A transportable mixer as claimed in claim 8, wherein the frame provides stanchion means at its front end for supporting said front end of the frame from the ground when the trailer is detached from a towing vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA312,759A CA1049494A (en) | 1978-10-05 | 1978-10-05 | Transportable trailer with selectively positionable wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA312,759A CA1049494A (en) | 1978-10-05 | 1978-10-05 | Transportable trailer with selectively positionable wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049494A true CA1049494A (en) | 1979-02-27 |
Family
ID=4112536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA312,759A Expired CA1049494A (en) | 1978-10-05 | 1978-10-05 | Transportable trailer with selectively positionable wheels |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1049494A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0847841A1 (en) * | 1996-12-12 | 1998-06-17 | Etablissements Guy Noel | Stackable concrete mixer |
-
1978
- 1978-10-05 CA CA312,759A patent/CA1049494A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0847841A1 (en) * | 1996-12-12 | 1998-06-17 | Etablissements Guy Noel | Stackable concrete mixer |
| FR2757100A1 (en) * | 1996-12-12 | 1998-06-19 | Guy Noel Ets | BETONNIERE GERBABLE |
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