US20030188461A1 - Cylinder mounting assembly for truck mounted scraper blade - Google Patents
Cylinder mounting assembly for truck mounted scraper blade Download PDFInfo
- Publication number
- US20030188461A1 US20030188461A1 US10/282,858 US28285802A US2003188461A1 US 20030188461 A1 US20030188461 A1 US 20030188461A1 US 28285802 A US28285802 A US 28285802A US 2003188461 A1 US2003188461 A1 US 2003188461A1
- Authority
- US
- United States
- Prior art keywords
- spring
- housing
- cylinder
- external thread
- hydraulic cylinder
- 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.)
- Granted
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/16—Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature
- Y10T403/1633—Utilizing fluid pressure
Definitions
- This invention relates to an improved hydraulic cylinder construction and, more particularly, to a cylinder construction for use on a snow scraper blade mounting for trucks and a service kit therefor.
- This invention arose out of a need to minimize the down time involved in repairing a hydraulic cylinder mounted on a truck for use in controlling the elevation of a snow scraper blade.
- a typical hydraulic cylinder mounting is disclosed in U.S. Pat. No. 3,086,303. The subject matter of this patent is to be incorporated herein by reference.
- the difficulty in gaining access to the hydraulic cylinder after it, along with the spring housing, has been removed from the truck is to effect a compressing of the spring in order to facilitate removal of the nuts and bolts limiting the downward travel of the hydraulic cylinder within the spring housing. Since the spring is large and the spring force is also large, there is a risk of injury if the spring compression activity is not carefully controlled while the travel limiting nuts and bolts are removed.
- the objects and purposes of the invention are met by providing a hydraulic cylinder and a service kit therefor for facilitating removal of the hydraulic cylinder from the spring housing.
- the service kit is usable in association with a hydraulic cylinder having a cylinder housing, and an elongate piston rod reciprocal in the cylindrical housing and a spring abutment collar adjacent a first end from which projects the piston rod.
- the hydraulic cylinder is mounted in a spring housing which is open at opposite ends while simultaneously providing a spring abutment at a second and remote from a third end whereat the piston rod projects from the spring housing.
- a stop ring encircles the hydraulic cylinder adjacent the first end and is secured to the spring housing adjacent the third end.
- a spring is oriented in a compressed state between and engaging the spring abutment collar and the spring abutment to continually urge the cylinder housing and the spring abutment collar thereon toward the stop ring.
- the cylinder housing has a fluid connection at a fourth end remote from the first end.
- the hydraulic cylinder additionally includes an opening having a first internal thread therein.
- the service kin includes a coupling member having a first external thread at one end and an enlarged head at the other end. The first external thread is configured to threadedly couple directly to the first internal thread.
- the service kit also includes an abutment member which has a hole therethrough configured to loosely receive therethrough the first external thread but preventing the enlarged head from passing therethrough.
- FIG. 1 is a side elevational view of a highway truck with a snow scraper blade mounted in operative position thereon by means of mounting connections;
- FIG. 2 is an enlarged side view of a conventional support mechanism for the spring housing
- FIG. 3 is a cross sectional view through the longitudinal center of the inventive hydraulic cylinder and spring housing mount therefor;
- FIG. 4 is an exploded isometric view of the hydraulic cylinder and spring housing assembly
- FIG. 5 is a top of view of a fragment of the hydraulic cylinder housing adjacent the end from which the piston rod extends;
- FIG. 6 is a side view of FIG. 5;
- FIG. 7 is a sectional view taken along the line 7 - 7 of FIG. 6.
- FIG. 1 illustrates a conventional highway maintenance truck having a frame 1 , rear driving wheels 2 and front wheels 3 with the usual operator's cab 4 and bed 5 .
- An elongate snow scraper blade 6 having a wearing edge plate 7 is mounted obliquely across the underside of the frame 1 by means of a pair of upright mounting posts 8 and 9 secured to the side frame members by identical brackets 10 .
- the posts 8 and 9 rigidly support a hinge shaft 11 from which the scraper blade is pivotally supported by means of knuckle plates 12 secured to the back side of the blade at the upper edge thereof.
- An adjusting cylinder support bracket 13 of a channel shaped cross section is provided with a sleeve 14 on its forward end supported upon the hinge shaft 11 so that the bracket projects perpendicularly to the hinge shaft and obliquely to the frame of the truck.
- a transverse slot 15 Spaced rightwardly (FIG. 2) from the sleeve 14 the web of the channel bracket 13 defines a transverse slot 15 adjustably receiving a clamp screw 16 which clamps the lower end of a third cylindrical support post 17 to the bracket 13 .
- the post 17 projects upwardly and is fixedly secured in a third mounting bracket 18 secured to the side frame member 1 of the truck.
- the third mounting bracket 18 may be identical to the previously described brackets 10 .
- the side flanges 23 of the channel shaped bracket have upwardly and rearwardly inclined trunnion plates 24 secured thereto with inwardly projecting male trunnion bearings 25 near their upper ends.
- the bearings 25 coact with and pivotally support the female trunnion bearings 26 projecting transversely from a cylindrical spring housing 27 .
- the lower left end 28 of the spring housing 27 is open and is axially slotted as at 29 (FIG. 3) on its upper side.
- the upper right end 31 of the spring housing 27 defines a center hole 32 for a fluid connection surrounded by an annular spring abutment 33 .
- a short length of angle iron 34 is welded over the slot 29 to protect the slot and restore the strength of the cylinder housing 27 .
- an inner hydraulic cylinder 36 substantially smaller than the spring housing 27 and having an annular abutment 37 projecting outwardly adjacent its lower left end.
- An ear 38 on the annular abutment 37 projects into the slot 29 to prevent rotation of the hydraulic cylinder while permitting axial movement of the hydraulic cylinder.
- a split ring stop 39 is received in the lower end 28 of the spring housing 27 and is secured thereto by a plurality of bolts 41 (FIG. 4) received in tapped holes 40 .
- a heavy compression spring 42 is positioned within the spring housing 27 and bears between the abutments 33 and 37 .
- the hydraulic cylinder 36 includes a cylindrical body 43 having at its upper right end 44 a relatively thick end plate 46 (FIG. 3) closing off the upper end of the cylindrical body 43 .
- the end plate 46 has an internally threaded opening 47 extending therethrough.
- a bolt 48 having an enlarged head 49 at one end and an external thread 50 at the other upper right end configured so that the external thread 50 is threadedly received directly into the internally threaded opening 47 .
- a lock washer 45 can be provided if desired.
- the bolt 48 has a central passageway 51 therethrough with the upper right end of the passageway 51 located within the enlarged head of the bolt 48 being internally threaded as at 54 and configured to receive a fluid connection member 55 (FIG. 1) therein.
- a piston to 52 is reciprocally mounted within the cylindrical body 43 .
- a cylinder rod 53 is fixedly secured to the piston 52 and is movable therewith.
- the distal end of the piston rod at 52 is configured to be secured to the snow scraper blade 6 in a conventional manner as depicted in FIG. 2.
- the cylindrical body 43 additionally has a fluid inlet port 59 adjacent the lower left end thereof.
- the inlet port 59 is configured for connection to a fluid supply as at 61 (FIG. 1).
- the ear 38 has a wear piece 57 fastened thereto by a screw 58 .
- the wear piece 57 is configured to slidably engage the angle iron 34 and protect the ear 38 from wear as well as assure alignment of the inlet port 59 with the slot 29 .
- a service kit 60 consisting of an elongate bolt 62 (FIG. 4) in combination with a disk or plate 63 is provided, the plate 63 having a central hole 64 therethrough the diameter of which is smaller than the enlarged head 66 on the bolt 62 .
- the external thread 67 on the bolt 62 is configured to directly threadedly engage the internally threaded opening 47 .
- the bolt 48 must be removed from the internally threaded opening 47 . This will also necessitate the removal of all of the fluid connection lines that are coupled to the hydraulic cylinder 36 .
- the bolt 62 is oriented so that the threaded end 67 thereof is inserted through the central hole 64 in the plate 63 .
- the threaded end 67 of the bolt 62 is then inserted into the internally threaded opening 47 .
- the length of the bolt 62 is sufficiently long that several turns thereof are required before the head end 66 engages the plate 63 .
- the bolts 41 can be removed so that the split ring 39 can be removed from the spring housing 27 .
- the bolt 62 can be rotated in the opposite direction so that the end plate 46 and the hydraulic cylinder 36 are driven away from the plate 63 and annular spring 33 .
- the bolt 62 is sufficiently long to facilitate a total relaxation of the spring 42 before the thread 67 thereof disengages from the thread 47 .
- the hydraulic cylinder 36 can be drawn out of the spring housing 27 at the left end of the spring housing 27 for replacement and/or servicing.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
Abstract
Description
- This invention relates to an improved hydraulic cylinder construction and, more particularly, to a cylinder construction for use on a snow scraper blade mounting for trucks and a service kit therefor.
- This invention arose out of a need to minimize the down time involved in repairing a hydraulic cylinder mounted on a truck for use in controlling the elevation of a snow scraper blade. A typical hydraulic cylinder mounting is disclosed in U.S. Pat. No. 3,086,303. The subject matter of this patent is to be incorporated herein by reference. The difficulty in gaining access to the hydraulic cylinder after it, along with the spring housing, has been removed from the truck is to effect a compressing of the spring in order to facilitate removal of the nuts and bolts limiting the downward travel of the hydraulic cylinder within the spring housing. Since the spring is large and the spring force is also large, there is a risk of injury if the spring compression activity is not carefully controlled while the travel limiting nuts and bolts are removed.
- Accordingly, it is an object of this invention to provide a hydraulic cylinder mounting assembly which can be easily assembled and disassembled from a truck as well as easily accessing the hydraulic cylinder to facilitate a repair thereto or replacement thereof.
- It is a further object of the invention to provide a service kit for facilitating removal of the hydraulic cylinder from the spring housing.
- It is a further object of the invention to provide a service kit, as aforesaid, wherein the force of the spring is overcome to enable the hydraulic cylinder to be removed from the spring housing.
- It is a further object of the invention to provide a service kit, as aforesaid, which is easy to use and is not dangerous to the user while it is in use.
- The objects and purposes of the invention are met by providing a hydraulic cylinder and a service kit therefor for facilitating removal of the hydraulic cylinder from the spring housing. The service kit is usable in association with a hydraulic cylinder having a cylinder housing, and an elongate piston rod reciprocal in the cylindrical housing and a spring abutment collar adjacent a first end from which projects the piston rod. The hydraulic cylinder is mounted in a spring housing which is open at opposite ends while simultaneously providing a spring abutment at a second and remote from a third end whereat the piston rod projects from the spring housing. A stop ring encircles the hydraulic cylinder adjacent the first end and is secured to the spring housing adjacent the third end. A spring is oriented in a compressed state between and engaging the spring abutment collar and the spring abutment to continually urge the cylinder housing and the spring abutment collar thereon toward the stop ring. The cylinder housing has a fluid connection at a fourth end remote from the first end. The hydraulic cylinder additionally includes an opening having a first internal thread therein. The service kin includes a coupling member having a first external thread at one end and an enlarged head at the other end. The first external thread is configured to threadedly couple directly to the first internal thread. The service kit also includes an abutment member which has a hole therethrough configured to loosely receive therethrough the first external thread but preventing the enlarged head from passing therethrough.
- FIG. 1 is a side elevational view of a highway truck with a snow scraper blade mounted in operative position thereon by means of mounting connections;
- FIG. 2 is an enlarged side view of a conventional support mechanism for the spring housing;
- FIG. 3 is a cross sectional view through the longitudinal center of the inventive hydraulic cylinder and spring housing mount therefor;
- FIG. 4 is an exploded isometric view of the hydraulic cylinder and spring housing assembly;
- FIG. 5 is a top of view of a fragment of the hydraulic cylinder housing adjacent the end from which the piston rod extends;
- FIG. 6 is a side view of FIG. 5; and
- FIG. 7 is a sectional view taken along the line7-7 of FIG. 6.
- FIG. 1 illustrates a conventional highway maintenance truck having a
frame 1,rear driving wheels 2 and front wheels 3 with the usual operator's cab 4 andbed 5. An elongate snow scraper blade 6 having a wearingedge plate 7 is mounted obliquely across the underside of theframe 1 by means of a pair ofupright mounting posts 8 and 9 secured to the side frame members byidentical brackets 10. Theposts 8 and 9 rigidly support ahinge shaft 11 from which the scraper blade is pivotally supported by means ofknuckle plates 12 secured to the back side of the blade at the upper edge thereof. - An adjusting
cylinder support bracket 13 of a channel shaped cross section is provided with asleeve 14 on its forward end supported upon thehinge shaft 11 so that the bracket projects perpendicularly to the hinge shaft and obliquely to the frame of the truck. Spaced rightwardly (FIG. 2) from thesleeve 14 the web of thechannel bracket 13 defines atransverse slot 15 adjustably receiving aclamp screw 16 which clamps the lower end of a thirdcylindrical support post 17 to thebracket 13. The post 17 projects upwardly and is fixedly secured in athird mounting bracket 18 secured to theside frame member 1 of the truck. Thethird mounting bracket 18 may be identical to the previously describedbrackets 10. - Toward the rear end of the
mounting bracket 13, theside flanges 23 of the channel shaped bracket have upwardly and rearwardlyinclined trunnion plates 24 secured thereto with inwardly projecting male trunnion bearings 25 near their upper ends. The bearings 25 coact with and pivotally support thefemale trunnion bearings 26 projecting transversely from acylindrical spring housing 27. The lowerleft end 28 of thespring housing 27 is open and is axially slotted as at 29 (FIG. 3) on its upper side. The upperright end 31 of thespring housing 27 defines acenter hole 32 for a fluid connection surrounded by anannular spring abutment 33. A short length ofangle iron 34 is welded over theslot 29 to protect the slot and restore the strength of thecylinder housing 27. - Centrally and reciprocally within the
spring housing 27 is an innerhydraulic cylinder 36 substantially smaller than thespring housing 27 and having anannular abutment 37 projecting outwardly adjacent its lower left end. Anear 38 on theannular abutment 37 projects into theslot 29 to prevent rotation of the hydraulic cylinder while permitting axial movement of the hydraulic cylinder. Asplit ring stop 39 is received in thelower end 28 of thespring housing 27 and is secured thereto by a plurality of bolts 41 (FIG. 4) received in tappedholes 40. Aheavy compression spring 42 is positioned within thespring housing 27 and bears between theabutments - The
hydraulic cylinder 36 includes acylindrical body 43 having at its upper right end 44 a relatively thick end plate 46 (FIG. 3) closing off the upper end of thecylindrical body 43. Theend plate 46 has an internally threadedopening 47 extending therethrough. Abolt 48 having an enlargedhead 49 at one end and anexternal thread 50 at the other upper right end configured so that theexternal thread 50 is threadedly received directly into the internally threadedopening 47. A lock washer 45 can be provided if desired. Thebolt 48 has acentral passageway 51 therethrough with the upper right end of thepassageway 51 located within the enlarged head of thebolt 48 being internally threaded as at 54 and configured to receive a fluid connection member 55 (FIG. 1) therein. - A piston to52 is reciprocally mounted within the
cylindrical body 43. Acylinder rod 53 is fixedly secured to thepiston 52 and is movable therewith. The distal end of the piston rod at 52 is configured to be secured to the snow scraper blade 6 in a conventional manner as depicted in FIG. 2. - The
cylindrical body 43 additionally has afluid inlet port 59 adjacent the lower left end thereof. Theinlet port 59 is configured for connection to a fluid supply as at 61 (FIG. 1). - In this particular embodiment, the
ear 38 has awear piece 57 fastened thereto by ascrew 58. Thewear piece 57 is configured to slidably engage theangle iron 34 and protect theear 38 from wear as well as assure alignment of theinlet port 59 with theslot 29. - In order to disassemble the assembly illustrated in FIG. 3, a
service kit 60 consisting of an elongate bolt 62 (FIG. 4) in combination with a disk orplate 63 is provided, theplate 63 having acentral hole 64 therethrough the diameter of which is smaller than the enlargedhead 66 on thebolt 62. Theexternal thread 67 on thebolt 62 is configured to directly threadedly engage the internally threadedopening 47. First, however, thebolt 48 must be removed from the internally threadedopening 47. This will also necessitate the removal of all of the fluid connection lines that are coupled to thehydraulic cylinder 36. Thereafter, thebolt 62 is oriented so that the threadedend 67 thereof is inserted through thecentral hole 64 in theplate 63. The threadedend 67 of thebolt 62 is then inserted into the internally threadedopening 47. The length of thebolt 62 is sufficiently long that several turns thereof are required before thehead end 66 engages theplate 63. Once thehead end 66 engages theplate 63, continued rotation thereof is to occur and theend plate 46 will be drawn toward theplate 63 to compress thespring 42 and draw the annularspring abutment collar 37 away from thesplit ring 39. Thereafter, thebolts 41 can be removed so that thesplit ring 39 can be removed from thespring housing 27. At this time, thebolt 62 can be rotated in the opposite direction so that theend plate 46 and thehydraulic cylinder 36 are driven away from theplate 63 andannular spring 33. Thebolt 62 is sufficiently long to facilitate a total relaxation of thespring 42 before thethread 67 thereof disengages from thethread 47. After thebolt 62 has exited from the internally threadedopening 47, thehydraulic cylinder 36 can be drawn out of thespring housing 27 at the left end of thespring housing 27 for replacement and/or servicing. - In order to install a repaired or new
hydraulic cylinder 36 into thespring housing 27, one need only reverse the procedure described above. - Although a particular preferred embodiment of the invention has been disclosed in detail for illustrative purposes, it will be recognized that variations or modifications of the disclosed apparatus, including the rearrangement of parts, lie within the scope of the present invention.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/282,858 US6634122B1 (en) | 2002-04-04 | 2002-10-29 | Cylinder mounting assembly for truck mounted scraper blade |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36991002P | 2002-04-04 | 2002-04-04 | |
US10/282,858 US6634122B1 (en) | 2002-04-04 | 2002-10-29 | Cylinder mounting assembly for truck mounted scraper blade |
Publications (2)
Publication Number | Publication Date |
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US20030188461A1 true US20030188461A1 (en) | 2003-10-09 |
US6634122B1 US6634122B1 (en) | 2003-10-21 |
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ID=28678080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/282,858 Expired - Fee Related US6634122B1 (en) | 2002-04-04 | 2002-10-29 | Cylinder mounting assembly for truck mounted scraper blade |
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US (1) | US6634122B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3530808A1 (en) * | 2018-02-22 | 2019-08-28 | Martti Tiainen | Suspension arrangement of underbody grader used in a vehicle, work machine or similar, as well as vehicle, work machine or similar |
CN110452720A (en) * | 2019-08-29 | 2019-11-15 | 济钢集团国际工程技术有限公司 | Dry coke quenching automatic station-keeping system executing agency is locking and stroke calibrating installation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3086303A (en) | 1962-05-25 | 1963-04-23 | Root Spring Scraper Co | Scraper blade mountings for trucks |
-
2002
- 2002-10-29 US US10/282,858 patent/US6634122B1/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3530808A1 (en) * | 2018-02-22 | 2019-08-28 | Martti Tiainen | Suspension arrangement of underbody grader used in a vehicle, work machine or similar, as well as vehicle, work machine or similar |
CN110452720A (en) * | 2019-08-29 | 2019-11-15 | 济钢集团国际工程技术有限公司 | Dry coke quenching automatic station-keeping system executing agency is locking and stroke calibrating installation |
Also Published As
Publication number | Publication date |
---|---|
US6634122B1 (en) | 2003-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ROOT SPRING SCRAPER CO., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BARA TECHNOLOGIES, INC.;REEL/FRAME:013437/0952 Effective date: 20021014 |
|
AS | Assignment |
Owner name: ROOT SPRING SCRAPER CO., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VERMEULEN, DAVID M.;REEL/FRAME:013437/0960 Effective date: 20021014 |
|
AS | Assignment |
Owner name: BARA TECHNOLOGIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HELDER, BRUCE A.;REEL/FRAME:013439/0034 Effective date: 20021014 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20071021 |