CA1164652A - Snow plow attachment - Google Patents
Snow plow attachmentInfo
- Publication number
- CA1164652A CA1164652A CA000425733A CA425733A CA1164652A CA 1164652 A CA1164652 A CA 1164652A CA 000425733 A CA000425733 A CA 000425733A CA 425733 A CA425733 A CA 425733A CA 1164652 A CA1164652 A CA 1164652A
- Authority
- CA
- Canada
- Prior art keywords
- wing plow
- secured
- vehicle
- plow
- attachment
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
- E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
- E01H5/067—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by side-wing snow-plough blades
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
- E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
- E01H5/065—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories
- E01H5/066—Snow-plough blade accessories, e.g. deflector plates, skid shoes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A wing plow attachment for a vehicle. The attachment comprises a wing plow with a forward hinge connection securing a front end of the wing plow to a forward side of the vehicle. Coupling rods is secured to the wing plow adjacent a rear end thereof. A coupler is secured to a free end of the coupling rods. A wing plow attachment member is secured to the vehicle and has a hooking arm for engagement of the coupler member to locate same in the attachment member at a predetermined position for positive engagement therewith.
A wing plow attachment for a vehicle. The attachment comprises a wing plow with a forward hinge connection securing a front end of the wing plow to a forward side of the vehicle. Coupling rods is secured to the wing plow adjacent a rear end thereof. A coupler is secured to a free end of the coupling rods. A wing plow attachment member is secured to the vehicle and has a hooking arm for engagement of the coupler member to locate same in the attachment member at a predetermined position for positive engagement therewith.
Description
BACKGROUND OF INVENTION
_ _ _ _ . _ (a) Field o~ the Invention The present invention relates to a snow plow attachment for a vehicle and more particularly, but no~
exclusively, to an attachment for a front plow and wing plow combination and wherein most of the plow support frame is quickly attached and detached from the vehicle and displaceable to permit a forwardly hinged hood of a vehicle to be opened.
(b) Description of Prior Art Various types of snow plow attachments to detachably secure snow plows to a vehicle are known.
However, these have various disadvantages such as requir-ing a bul~y attachment frame to be permanently secured to the vehicle thus creating encumberance to the vehicle when the snow plow is not attached thereto and adding to the weight of the vehicle thereby increasing its fuel consumption. Further, damage is caused to such frames due to its permanent attachment to the vehicle. Another disadvantage of such permanently attached support frames is that often these require to be dismantled in part when certain repairs are required to the vehicle front end and in many cases require partial dismantling when it is necessary to lift the hood of the vehicle which is of common occurrence. A still further disadvantage of snow plow attachment frames heretofore known is that it is time consuming to attach the snow plow thereto and normally requires the assistance of at least two men to perform the installation. Also, often the installation requires the assistance of other vehicles such as fork-lift trucks whereby to lift the support frame to couple it to the vehicle and often such coupling must be done indoors.
_ _ _ _ . _ (a) Field o~ the Invention The present invention relates to a snow plow attachment for a vehicle and more particularly, but no~
exclusively, to an attachment for a front plow and wing plow combination and wherein most of the plow support frame is quickly attached and detached from the vehicle and displaceable to permit a forwardly hinged hood of a vehicle to be opened.
(b) Description of Prior Art Various types of snow plow attachments to detachably secure snow plows to a vehicle are known.
However, these have various disadvantages such as requir-ing a bul~y attachment frame to be permanently secured to the vehicle thus creating encumberance to the vehicle when the snow plow is not attached thereto and adding to the weight of the vehicle thereby increasing its fuel consumption. Further, damage is caused to such frames due to its permanent attachment to the vehicle. Another disadvantage of such permanently attached support frames is that often these require to be dismantled in part when certain repairs are required to the vehicle front end and in many cases require partial dismantling when it is necessary to lift the hood of the vehicle which is of common occurrence. A still further disadvantage of snow plow attachment frames heretofore known is that it is time consuming to attach the snow plow thereto and normally requires the assistance of at least two men to perform the installation. Also, often the installation requires the assistance of other vehicles such as fork-lift trucks whereby to lift the support frame to couple it to the vehicle and often such coupling must be done indoors.
- 2 -s~
Because of the difficulty in attaching and detaching snow plows to vehicle support frames, often these snow plows, or at least the wing plows, will remain attached to the vehicle throughout the winter months.
As stated hereinabove, this adds to the weight of the vehicle and thus makes it more expensive to operate due to the added fuel consumption. Usually a front plow will weigh approximately 2,500 pounds and a wing plow 1,200 pounds, thus adding considerably to the weight of the vehicle. Another disadvantage in leaving the plows attached to the vehicle is that fewer vehicles can be stored indoors as they occupy more space. A still further disadvantage in leaving plow attachment frames and the plows attached to the vehicle is that such frames usually impairs t'ne vision of the operator thus making the vehicle less safe on the road. A reason for maintain-ing the snow plows attached to vehlcles is that severity of snow storms are often unpredictable and due to the time consuming task of installing these plows it would be very difficult to equip a large fleet of trucks with plows on short notice. It often takes half an hour for two men to lnstall a front plow and an additional twenty minutes to install a wing plow. Thus, it could take an entire day for two men to install plows on a fleet of ten trucks.
SUMMARY OF INVENTIO~
It is a feature of the present invention to provide a snow plow attachment which suhstantially over-comes all of the above-mentioned disadvantages.
Another feature of the present invention is to provide a snow plow attachment for a vehicle wherein the majority of the snow plow support frame remains at-tached to the snow plow and is detachably securable to the vehicle in a very short time with the help of a single person.
Another feature of the present invention is to provide a snow plow attachment for a vehicle wherein much of the framework is detached from the vehicle and when secured thereto is hingeable forwardly whereby to permit a forwardly hinged hood of a vehicle to be opened for access to the engine area under the hood.
Another feature of the present invention is to provide a snow plow attachment for detachably securing a front plow and a wing plow to a vehicle and wherein the plow combination and support frame is easily and quickly de-tachable from the vehicle.
According to the above features, from a broad aspect, the present invention provides a wing plow attachment for a vehicle. The attachment comprises a wing plow with a forward hinge connection securing a front end of the wing plow to a forward side of the vehicle. Coupling rods is secured to the wing plow adjacent a rear end thereof. A coupler is secured to a free end of the coupling rods. A wing plow attachment member is secured to the vehicle and has a hooking arm for engagement of the coupler member to locate same in the attachment member at a predetermined position for positive engagement therewith.
Z
BRIEF_DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the example thereof as illustrated in the accompanying drawings in which:
FIGURE 1 is a side view of the front plow support frame and the vehicle coupling mechanism for attaching a front plow to a vehicle;
FIGURE 2 is a side view, the same as Figure 1, but with the coupling mechanism connected to the front plow support frame and showing its tilted position with the hood of the vehicle open;
FIGIJRE 3 is a fragmented top view showing part of the front plow support mechanism with a wing plow secured thereto and additionally showing the wing plow coupling to a vehicle, FIGURE 4a is a front view of the pivot plate of the coupling mechanism showing the locking mechanism, FIGURE 4b is a rear view of the coupling mechanism pivot plate showing a further locking mechanism, FIGURE 5 is a fragmented perspective view of the coupling securing the wing plow to a vehicle, and FIGURE 6 is a side view of the wing plow coupler member secured to the attachment member.
DESCRIPTION OF PREFERRED E:MBODIME~TS
.. . . . _ Referring now to the drawings and more particu-larly to Figures 1 and 2, there is shown the snow plow attachment of the present invention whereby to secure 5~
a front plow 10 and a wing plow 11 to a vehicle 12~
The attachment comprises a coupling mechanism 13 which is connected to a lower front frame 14 of the vehicle 12. The coupling mechanism has a plow engaginy displace-able frame or pivot plate 15 and a stationary frame 16to which the displaceable frame 15 is hingedly connected at a pivot connection 17 in its lower end. A piston 1~
constitutes a means to displace the displaceable frame 15 to swing outwardly downward as shown in Figure 1.
The displaceable frame 15 is constituted by a pivot plate having a hook engaging means l9 in a top edge thereof for engagement with a pair of coupling plates 20 extending rearwardly of a front plow support frame 21.
The coupling plates 20 are provided with a downwardly extending hook groove 22 whereby the top edge 19 of the pivot plate can be positioned therein and by retracting the pivot plate rearwardly to a vertical position causing the support frame 21 to lift upwardly and be engaged with the coupling mechanism 13.
The engagement of the front plow support frame 21 is effected by a first locking means 23 and a second locking means 24 as shown in Figures 4a and 4b, respect-ively. Both of the locking means 23 and 24 are consti-tuted by dual action piston cylinders 23' and 24' respect-ively with the first piston cylinder 23' being secured on the front wall 25 of the pivot plate 15. The cylinder is provided with pistons ther*in to actuate opposed locking piston rods 23" for displacement across opposed lock holes 26 provided in a pair of locking flanges 27.
The coupling plates 20 are each positioned between a respective pair of these coupling flanges wherein a lock hole 28 provided in each coupling plates 20 are positioned in alignment with the lock holes 26. By actuating the locking piston rods 23" outwardly the coupling plates are engaged to the pivot plate 15.
In order to immovably secure the pivot plate 15 to the stationary frame 16 it is firstly necessary to retract the pivot plate 15 to its vertical position and by doing so causing a pair of locking flanges 29 having a lock hole therein to locate themselves in alignment with a lock hole 30 provided in a pair of arms 16' of the stationary frame. By actuating the locking bolt 24" of the cylinder 24' the flange 29 is secured to the stationary arm 16' of the stationary frame 16. Thus, the front plow support frame 21 is immovably secured to the stationary frame of the vehicle 12.
As shown in Figure 1 the front plow support frame 21 is supported on a ground surface 31 by support means constituted by a pair of telescopic legs 32.
These legs are adjusted in height whereby the hook groove 22 of the coupling plates 20 are maintained at a desired height relative to the stationary frame 16 of a vehicle 12 associated with the support frame 21.
By providing adjustment via the telescopic legs 32 the snow plow and its support frames are stored in readiness to be engaged by a designated vehicle without the requirement of manual labor or added vehicles to lift the plow support frame for enyagement by the vehicle.
Simply, the pivot plate 15 is hinged outwardly and the vehicle is advanced until the top edge lg of the plate engages the hook grooves 22 as aforementioned. Once the frame is engaged the telescopic leg is retracted into the support frame, as shown in Figure 2. Also, as shown in Figure 2, in order to make clearance for the opening of the hood 33 of the vehicle, it is necessary to actuate the second piston cylinder 24 to unlock the pivot plate 15 from the stationary frame 16 and then to actuate the plate positioning piston 18 to cause the pivot plate 15 to tilt forwardly downward to displace the front plow support frame 21. Thus there is sufficient clearance for the hood 33 to hinge forwardly for access to the engine area under the hood.
In order to permit this tilting,the front plow support frame 21 is hingedly secured to a front plow frame 34 in any manner well known in the art and not shown herein. Also, the manner in which the plow is lifted is well known in the art and as herein shown a flexible connection 35 is secured to the front plow thus permitting the support frame 21 to be tilted forwardly as shown in Figure 2 whilst also permitting the plow to be lifted off the ground surface 31 by the actuation of a control piston 36 secured to a lever arm 37 supporting the flexible coupling 35.
Referring now additionally to Figures 3, 5 and 6, it can be seen that a wing plow 11 may also be secured to the front plow support frame. For this securement there is provided a wing plow attachment boom 40 which is connected at a side edge of the front plow support frame 21 and extending vertically thereto. The boom 40 is provided with a lifting cylinder 41 in a top portion thereof with the front end of the wing plow ll having a hinge coupling 43 which is secured to a piston rod 42 associated with the cylinder 41. By retracting this piston rod 42 the front end of the wing plow 11 is lifted off the ground.
As shown more clearly in Figures 3, 5 and 6, a pair of coupling rods 44 is secured in a parallel spaced apart manner to a support bracket 45 secured adjacent the rear end of the wing plow 11 via universal joint couplings 46- The other ends of the coupling rod 44 are hingedly connected to a coupler member 47. The hinge connection 48 connecting the coupler member to the couping rods also permits horizontal and vertical displace-ment of the rod with respect to the coupler member 47.
A wing plow attachment member 49 is secured to the vehicle at a convenient location rearwardly of the cabin area 50 thereof. The wing plow at-tachment member is provided with a hooking arm 51 for engaging the coupler member 47 to secure it into the attachment member 49 whereby to attach the rear end of the wing plow to the vehicle.
The coupler member 47 is constituted by a pair of spaced apart vertical plates 47' with a space defined therebetween for the passage of the hooking arm 51. An engaging pin 52 is secured transversely intermediate the vertical plate 47' for engagement by the hook end 51' of the hook arm 51. The attachment member 49 is provided with a coupler member receiving slot 53 into which the coupler member 47 is located by the actuation o~ the ;s~
hooking arm 51. A hook arm actuatiny piston 54 retracts the hooking arm 51 into the slot 53 and precisely locates a pair of holes 55 provided in the vertical plates 47' in alignment with a pair of holes 56 located in the side walls 57 of the attachment member 49~ Lock pins are then inserted through the holes 56 and 55 to lock the coupler member 47 to the attachment member 49. Figure 6 illustrates the position of the coupler member when secured to the attachMent member.
Although not shown in the drawings, hydraulic connections are provided for the operation of all pistons to displace the front plow 10, the wing plow 11 and other pistons associated with the coupling mechanisms. These hydraulic connections are conveniently located behind the coupling mechanism connected to the lower front frame and the attachment member for securing the end rear of the wing plow.
Other mechanical framework and couplings normally associated with a front plow and wing plow, not forming part of this invention, have not been disclosed but are obvious to those skilled in the art. For example, the wing plow is provided with a lifting cylinder 60 as shown in Figure 5 to lift the wing plow upwardly towards the vehicle, as is well known in the art. It is, however, pointed out that it is within the scope of the present invention to cover any obvious modifications of the snow plow attach-ments herein described provided such modifications fall within the scope of the appended claims.
This is a divisional application of Canadian patent application serial no. 413,172 filed October 8, 1982.
Because of the difficulty in attaching and detaching snow plows to vehicle support frames, often these snow plows, or at least the wing plows, will remain attached to the vehicle throughout the winter months.
As stated hereinabove, this adds to the weight of the vehicle and thus makes it more expensive to operate due to the added fuel consumption. Usually a front plow will weigh approximately 2,500 pounds and a wing plow 1,200 pounds, thus adding considerably to the weight of the vehicle. Another disadvantage in leaving the plows attached to the vehicle is that fewer vehicles can be stored indoors as they occupy more space. A still further disadvantage in leaving plow attachment frames and the plows attached to the vehicle is that such frames usually impairs t'ne vision of the operator thus making the vehicle less safe on the road. A reason for maintain-ing the snow plows attached to vehlcles is that severity of snow storms are often unpredictable and due to the time consuming task of installing these plows it would be very difficult to equip a large fleet of trucks with plows on short notice. It often takes half an hour for two men to lnstall a front plow and an additional twenty minutes to install a wing plow. Thus, it could take an entire day for two men to install plows on a fleet of ten trucks.
SUMMARY OF INVENTIO~
It is a feature of the present invention to provide a snow plow attachment which suhstantially over-comes all of the above-mentioned disadvantages.
Another feature of the present invention is to provide a snow plow attachment for a vehicle wherein the majority of the snow plow support frame remains at-tached to the snow plow and is detachably securable to the vehicle in a very short time with the help of a single person.
Another feature of the present invention is to provide a snow plow attachment for a vehicle wherein much of the framework is detached from the vehicle and when secured thereto is hingeable forwardly whereby to permit a forwardly hinged hood of a vehicle to be opened for access to the engine area under the hood.
Another feature of the present invention is to provide a snow plow attachment for detachably securing a front plow and a wing plow to a vehicle and wherein the plow combination and support frame is easily and quickly de-tachable from the vehicle.
According to the above features, from a broad aspect, the present invention provides a wing plow attachment for a vehicle. The attachment comprises a wing plow with a forward hinge connection securing a front end of the wing plow to a forward side of the vehicle. Coupling rods is secured to the wing plow adjacent a rear end thereof. A coupler is secured to a free end of the coupling rods. A wing plow attachment member is secured to the vehicle and has a hooking arm for engagement of the coupler member to locate same in the attachment member at a predetermined position for positive engagement therewith.
Z
BRIEF_DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the example thereof as illustrated in the accompanying drawings in which:
FIGURE 1 is a side view of the front plow support frame and the vehicle coupling mechanism for attaching a front plow to a vehicle;
FIGURE 2 is a side view, the same as Figure 1, but with the coupling mechanism connected to the front plow support frame and showing its tilted position with the hood of the vehicle open;
FIGIJRE 3 is a fragmented top view showing part of the front plow support mechanism with a wing plow secured thereto and additionally showing the wing plow coupling to a vehicle, FIGURE 4a is a front view of the pivot plate of the coupling mechanism showing the locking mechanism, FIGURE 4b is a rear view of the coupling mechanism pivot plate showing a further locking mechanism, FIGURE 5 is a fragmented perspective view of the coupling securing the wing plow to a vehicle, and FIGURE 6 is a side view of the wing plow coupler member secured to the attachment member.
DESCRIPTION OF PREFERRED E:MBODIME~TS
.. . . . _ Referring now to the drawings and more particu-larly to Figures 1 and 2, there is shown the snow plow attachment of the present invention whereby to secure 5~
a front plow 10 and a wing plow 11 to a vehicle 12~
The attachment comprises a coupling mechanism 13 which is connected to a lower front frame 14 of the vehicle 12. The coupling mechanism has a plow engaginy displace-able frame or pivot plate 15 and a stationary frame 16to which the displaceable frame 15 is hingedly connected at a pivot connection 17 in its lower end. A piston 1~
constitutes a means to displace the displaceable frame 15 to swing outwardly downward as shown in Figure 1.
The displaceable frame 15 is constituted by a pivot plate having a hook engaging means l9 in a top edge thereof for engagement with a pair of coupling plates 20 extending rearwardly of a front plow support frame 21.
The coupling plates 20 are provided with a downwardly extending hook groove 22 whereby the top edge 19 of the pivot plate can be positioned therein and by retracting the pivot plate rearwardly to a vertical position causing the support frame 21 to lift upwardly and be engaged with the coupling mechanism 13.
The engagement of the front plow support frame 21 is effected by a first locking means 23 and a second locking means 24 as shown in Figures 4a and 4b, respect-ively. Both of the locking means 23 and 24 are consti-tuted by dual action piston cylinders 23' and 24' respect-ively with the first piston cylinder 23' being secured on the front wall 25 of the pivot plate 15. The cylinder is provided with pistons ther*in to actuate opposed locking piston rods 23" for displacement across opposed lock holes 26 provided in a pair of locking flanges 27.
The coupling plates 20 are each positioned between a respective pair of these coupling flanges wherein a lock hole 28 provided in each coupling plates 20 are positioned in alignment with the lock holes 26. By actuating the locking piston rods 23" outwardly the coupling plates are engaged to the pivot plate 15.
In order to immovably secure the pivot plate 15 to the stationary frame 16 it is firstly necessary to retract the pivot plate 15 to its vertical position and by doing so causing a pair of locking flanges 29 having a lock hole therein to locate themselves in alignment with a lock hole 30 provided in a pair of arms 16' of the stationary frame. By actuating the locking bolt 24" of the cylinder 24' the flange 29 is secured to the stationary arm 16' of the stationary frame 16. Thus, the front plow support frame 21 is immovably secured to the stationary frame of the vehicle 12.
As shown in Figure 1 the front plow support frame 21 is supported on a ground surface 31 by support means constituted by a pair of telescopic legs 32.
These legs are adjusted in height whereby the hook groove 22 of the coupling plates 20 are maintained at a desired height relative to the stationary frame 16 of a vehicle 12 associated with the support frame 21.
By providing adjustment via the telescopic legs 32 the snow plow and its support frames are stored in readiness to be engaged by a designated vehicle without the requirement of manual labor or added vehicles to lift the plow support frame for enyagement by the vehicle.
Simply, the pivot plate 15 is hinged outwardly and the vehicle is advanced until the top edge lg of the plate engages the hook grooves 22 as aforementioned. Once the frame is engaged the telescopic leg is retracted into the support frame, as shown in Figure 2. Also, as shown in Figure 2, in order to make clearance for the opening of the hood 33 of the vehicle, it is necessary to actuate the second piston cylinder 24 to unlock the pivot plate 15 from the stationary frame 16 and then to actuate the plate positioning piston 18 to cause the pivot plate 15 to tilt forwardly downward to displace the front plow support frame 21. Thus there is sufficient clearance for the hood 33 to hinge forwardly for access to the engine area under the hood.
In order to permit this tilting,the front plow support frame 21 is hingedly secured to a front plow frame 34 in any manner well known in the art and not shown herein. Also, the manner in which the plow is lifted is well known in the art and as herein shown a flexible connection 35 is secured to the front plow thus permitting the support frame 21 to be tilted forwardly as shown in Figure 2 whilst also permitting the plow to be lifted off the ground surface 31 by the actuation of a control piston 36 secured to a lever arm 37 supporting the flexible coupling 35.
Referring now additionally to Figures 3, 5 and 6, it can be seen that a wing plow 11 may also be secured to the front plow support frame. For this securement there is provided a wing plow attachment boom 40 which is connected at a side edge of the front plow support frame 21 and extending vertically thereto. The boom 40 is provided with a lifting cylinder 41 in a top portion thereof with the front end of the wing plow ll having a hinge coupling 43 which is secured to a piston rod 42 associated with the cylinder 41. By retracting this piston rod 42 the front end of the wing plow 11 is lifted off the ground.
As shown more clearly in Figures 3, 5 and 6, a pair of coupling rods 44 is secured in a parallel spaced apart manner to a support bracket 45 secured adjacent the rear end of the wing plow 11 via universal joint couplings 46- The other ends of the coupling rod 44 are hingedly connected to a coupler member 47. The hinge connection 48 connecting the coupler member to the couping rods also permits horizontal and vertical displace-ment of the rod with respect to the coupler member 47.
A wing plow attachment member 49 is secured to the vehicle at a convenient location rearwardly of the cabin area 50 thereof. The wing plow at-tachment member is provided with a hooking arm 51 for engaging the coupler member 47 to secure it into the attachment member 49 whereby to attach the rear end of the wing plow to the vehicle.
The coupler member 47 is constituted by a pair of spaced apart vertical plates 47' with a space defined therebetween for the passage of the hooking arm 51. An engaging pin 52 is secured transversely intermediate the vertical plate 47' for engagement by the hook end 51' of the hook arm 51. The attachment member 49 is provided with a coupler member receiving slot 53 into which the coupler member 47 is located by the actuation o~ the ;s~
hooking arm 51. A hook arm actuatiny piston 54 retracts the hooking arm 51 into the slot 53 and precisely locates a pair of holes 55 provided in the vertical plates 47' in alignment with a pair of holes 56 located in the side walls 57 of the attachment member 49~ Lock pins are then inserted through the holes 56 and 55 to lock the coupler member 47 to the attachment member 49. Figure 6 illustrates the position of the coupler member when secured to the attachMent member.
Although not shown in the drawings, hydraulic connections are provided for the operation of all pistons to displace the front plow 10, the wing plow 11 and other pistons associated with the coupling mechanisms. These hydraulic connections are conveniently located behind the coupling mechanism connected to the lower front frame and the attachment member for securing the end rear of the wing plow.
Other mechanical framework and couplings normally associated with a front plow and wing plow, not forming part of this invention, have not been disclosed but are obvious to those skilled in the art. For example, the wing plow is provided with a lifting cylinder 60 as shown in Figure 5 to lift the wing plow upwardly towards the vehicle, as is well known in the art. It is, however, pointed out that it is within the scope of the present invention to cover any obvious modifications of the snow plow attach-ments herein described provided such modifications fall within the scope of the appended claims.
This is a divisional application of Canadian patent application serial no. 413,172 filed October 8, 1982.
Claims (6)
1. A wing plow attachment for a vehicle comprising a wing plow, a forward hinge connection securing a front end of said wing plow to a forward side of said vehicle, coupling rods secured to said wing plow adjacent a rear end thereof, a coupler member secured to a free end of said coupling rods, a wing plow attachment member secured to said vehicle and having a hooking arm for engagement of said coupler member to locate same in said attachment member at a predetermined position for positive engagement therewith.
2. A wing plow attachment as claimed in claim 1 wherein said coupler member is provided by a pair of spaced apart vertical plates being secured at a top and bottom end to a respective one of a pair of said coupling rods, an engaging pin transversely disposed intermediate said vertical plates for engagement by said hooking arm.
3. A wing plow attachment as claimed in claim 2 wherein said wing plow attachment member is provided with a coupler member receiving slot, said hooking arm being aligned with said slot to displace said coupler member therein, a hook arm actuating piston secured to said hooking arm for displacement thereof, and locking means to immovably secure said coupler member in said slot.
4. A wing plow attachment as claimed in claim 3 wherein said locking means is one or more lock pins extending across holes in opposed walls of said slot and aligned lock holes in said vertical plates of said coupler member.
5. A wing plow attachment as claimed in claim 4 wherein said coupling rods are pivotally connected between said wing plow and said coupler member to permit horizontal and vertical displacement of said wing plow.
6. A wing plow attachment as claimed in claim 1 wherein said forward hinge connection is constituted by a vertical boom, a lifting piston cylinder secured to said boom and having a piston rod end secured to a forward hinge connection of said wing plow whereby to lift said wing plow above a ground surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000425733A CA1164652A (en) | 1983-04-12 | 1983-04-12 | Snow plow attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000425733A CA1164652A (en) | 1983-04-12 | 1983-04-12 | Snow plow attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1164652A true CA1164652A (en) | 1984-04-03 |
Family
ID=4124997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000425733A Expired CA1164652A (en) | 1983-04-12 | 1983-04-12 | Snow plow attachment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1164652A (en) |
-
1983
- 1983-04-12 CA CA000425733A patent/CA1164652A/en not_active Expired
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