WO2010016292A1 - ドーザ装置 - Google Patents
ドーザ装置 Download PDFInfo
- Publication number
- WO2010016292A1 WO2010016292A1 PCT/JP2009/054402 JP2009054402W WO2010016292A1 WO 2010016292 A1 WO2010016292 A1 WO 2010016292A1 JP 2009054402 W JP2009054402 W JP 2009054402W WO 2010016292 A1 WO2010016292 A1 WO 2010016292A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- guide member
- cylinder
- support
- dozer
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7622—Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers
- E02F3/7627—Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers with the scraper blade adjustable relative to the frame about a vertical axis
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7622—Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers
- E02F3/7631—Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers with the scraper blade adjustable relative to the frame about a horizontal axis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
Definitions
- the present invention relates to a tilter / angle swingable dozer device mounted on a work machine such as a backhoe.
- a dozer frame that moves up and down via a dozer cylinder is pivotally supported on a traveling machine body via a horizontal axis, and the dozer frame swings back and forth via an angle cylinder.
- a support is pivotally supported via a vertical axis, and a blade that swings up and down via a tilt cylinder is pivotally supported by the support via a longitudinal axis.
- the longitudinal axis is disposed through the longitudinal center of the longitudinal axis.
- Patent Document 2 the front and rear shafts are arranged at a position lower than the blade, the front end of the front and rear shaft passes through the vertical axis attached to the blade, and a tilt cylinder is provided on the upper side of the blade.
- JP 2001-164597 A Japanese Patent Application Laid-Open No. 61-162639
- Patent Documents 1 and 2 since the vertical axis passes through the front and rear axes, the total length of the front and rear axes is increased, and it is difficult to ensure the shaft strength. 1, the distance from the longitudinal axis to the tilt cylinder is short, and it is difficult to efficiently transmit the acting force of the tilt cylinder. In Patent Document 2, the tilt cylinder is located above the blade and the height is increased. And the visibility of the front of the blade is worsened. SUMMARY OF THE INVENTION An object of the present invention is to provide a dozer device that can solve such problems of the prior art.
- the present invention supports the front and rear shafts in front of the lower part of the vertical axis, and arranges a tilt cylinder in front of the upper part of the vertical axis and above the front and rear axes, while shortening the total length of the front and rear axes and securing the shaft strength. It is an object of the present invention to provide a dozer device that can be configured to have a compact structure on the back side of a blade.
- the dozer device of the present invention has the following features. That is, the dozer device of the present invention is supported by a traveling machine body around a horizontal axis, and is moved up and down by a dozer cylinder, and a support body pivoted around the vertical axis by the dozer frame and swinging back and forth by an angle cylinder. And a blade pivoted about the front-rear axis by the support and swinging up and down by a tilt cylinder, the support supports the front-rear axis in front of a lower part of the vertical axis, and an upper front of the vertical axis And a tilt cylinder is disposed above the front-rear axis.
- the support body has an arm portion that protrudes outward in the left-right direction, and a sliding portion that is provided at a tip of the arm portion and faces the blade, and the sliding portion is disposed on the back surface of the blade. It is preferable that a guide member for restricting the forward separation of the blade while allowing a relative vertical swing between the front and rear shafts is provided, and the axis of the front and rear shafts is set lower than the vertical center of the sliding portion. .
- the guide member includes an outer peripheral guide member that engages with an outer peripheral side of the sliding portion in a radial direction of the front and rear shafts, and an inner peripheral guide member that engages with the inner peripheral side of the sliding portion.
- the inner circumferential guide member is disposed at a position where the tilt cylinder is removed with respect to the blade and is exposed from the support body in a state where the blade is swung up and down around the front-rear axis. It is preferable that
- the tip of the cylinder rod of the tilt cylinder is connected to the upper portion of the blade, and the bottom of the cylinder tube is connected to the upper surface of the arm portion of the support, and is connected to the cylinder tube of the tilt cylinder.
- a hydraulic hose is passed over the vertical axis and extends on the side of the dozer frame opposite to the arrangement of the cylinder tube in the left-right direction.
- the blade includes a back body supported by the front and rear shafts, and a blade body fixed to the front surface of the back body and having an upper portion covering an upper edge of the back body,
- the tilt cylinder is disposed below the upper end of the blade body between the support body and a cover member that covers the tilt cylinder from above is attached to the back body, and the front edge of the cover member is attached to the blade body. It is suitable to arrange below the upper part.
- a slide plate slidably contacting the sliding portion of the support is provided on the back surface of the blade so as to be detachable from the guide member.
- an outer peripheral guide member that engages with an inner peripheral side of the sliding portion, and the outer peripheral guide member and the inner peripheral guide member are fixed to the blade with the slide plate interposed therebetween. Is preferred.
- a lubricating oil passage is formed in the slide plate, a first oiling tool for supplying oil to the lubricating oil passage is provided in the arm portion of the support body, and oil is supplied between the guide member and the arm portion. It is preferable that two oil fillers are provided on the guide member.
- the support swings back and forth (angle swing) around the vertical axis
- the tilt cylinder S3 when the tilt cylinder S3 is operated, the blade swings up and down (tilt swing) around the front and rear axis Z. Move). Since the longitudinal axis for pivotally supporting the support and the longitudinal axis for pivotally supporting the blade are formed separately, and the longitudinal axis is located in front of the lower part of the longitudinal axis, it is possible to shorten the axial length and ensure the axial strength. it can.
- the tilt cylinder in front of the upper part of the vertical axis and above the front and rear axes, the vertical dimension from the front and rear axes to the tilt cylinder can be shortened, and the structure on the back side of the blade can be made compact.
- the tilt cylinder is disposed below the substantially upper end of the blade, the field of view ahead of the blade is further improved.
- the sliding part at the tip of the left and right arm portions of the support body engages with the guide member while allowing the blade to swing up and down, thereby restricting the forward separation of the blade. it can. Since the axial center ZP of the longitudinal axis Z is lower than the center of the sliding part 4B in the vertical direction, the load when the blade 5 is grounded is the surface contact between the guide member 6 above the longitudinal axis Z and the sliding part 4B. It is supported, and the contact per side is reduced to the contact per surface, so that settling (or uneven wear) can be reduced.
- the left and right sliding portions 4B are used not only on the outer peripheral side but also on the inner peripheral side in the radial direction of the front-rear axis Z.
- the outer peripheral side engages with an outer peripheral guide member 6A provided on the back surface of the blade 5,
- the side 4 engages with the inner circumferential guide member 6B, and the support 4 is applied to the acting force (force that moves the blade 5 forward from the support 4) applied when the blade 5 is grounded or when it is grounded and moved backward.
- the blade 5 is sufficiently supported at two radial positions of the front and rear axis Z.
- An outer peripheral guide member 6A and an inner peripheral guide member 6B are detachably fixed to a substrate 7 fixed to the back surface of the blade 5 via a spacer 12, and the outer peripheral guide member 6A and the inner peripheral guide member 6B are respectively left and right.
- the structure on the back side of the blade compact by shortening the vertical dimension from the longitudinal axis to the tilt cylinder while shortening the overall length of the longitudinal axis and the longitudinal axis and ensuring the axial strength.
- FIG. 1 is an overall plan view showing an embodiment of the present invention.
- FIG. It is a rear view of a blade. It is an enlarged plan view of the principal part. It is an enlarged rear view of the principal part.
- FIG. It is an exploded side view. It is the whole perspective view seen from back upper. It is the whole perspective view which removed the covers and was seen from the back upper part. It is the perspective view which looked at the braid
- reference numeral 1 denotes a dozer device called a tilt / angle dozer device, which is attached to the front portion of a traveling machine body 2 such as a backhoe.
- the dozer device 1 pivotally supports a dozer frame 3 on a traveling machine body 2 via a horizontal axis X, and rotates around the horizontal axis X by a dozer cylinder S1 so that the dozer frame 3 can be raised and lowered.
- the support 4 is pivotally supported via a vertical axis Y (angle fulcrum shaft), and is rotated about the vertical axis Y by an angle cylinder S2 so that the support 4 can swing back and forth (angle swing).
- the blade 5 is pivotally supported via a front-rear axis Z (tilt fulcrum shaft), and is rotated about the front-rear axis Z by a tilt cylinder S3 so that the blade 5 can swing up and down (tilt swing). .
- the dozer frame 3 has a front member 16 that connects the front ends of a pair of left and right main members 15 that are long in the front-rear direction. Are connected to each other by connecting members 18, and cylinder rods of the dozer cylinder S1 are connected to this connecting member 18, and one of the pair of left and right main members 15 (right main member) is connected.
- a bracket 19 is fixed, and the cylinder tube of the angle cylinder S2 is pin-connected to the bracket 19.
- the main member 15 is a rectangular tube
- the connecting member 18 is a cylindrical body
- the front member 16 is formed in a U-shaped cross section
- the vertical bearing member 17 is disposed in front of the main member 15 and the front member 16 in front.
- a face plate 17a is fixed, a pair of upper and lower plane-view substantially triangular plates 17b are fixed to the front surface of the front plate 17a, and a cylindrical body 17c through which the vertical axis Y is inserted is fixed to the top of the triangular plate 17b. It is configured.
- An angle cylinder S2 pivotally supported by the bracket 19 is disposed on the outer side of one (right main member) of the main member 15, whereas the tilt cylinder S3 is connected on the upper side of the other (left main member).
- a hydraulic hose 9 and a side hose cover 10S that covers the hydraulic hose 9 are disposed, and a fitting 20 is provided for positioning the hydraulic hose 9 and attaching the side hose cover 10S.
- the support 4 connects an upper plate 4u and a lower plate 4d by a vertical plate-like front plate 4f and a rear plate 4r, and a vertical axis Y is inserted into each rear protrusion of the upper plate 4u and the lower plate 4d.
- the upper and lower boss members 4a are fixed, and the front and rear bearing members 21 for pivotally supporting the front and rear axis Z are fixed to the lower plate 4d, the front plate 4f, and the rear plate 4r.
- the front / rear bearing member 21 is located on the front side of the lower boss member 4a, and therefore the front / rear axis Z is located on the front side of the vertical axis Y.
- the axis Z of the axis Z is located on a common vertical plane.
- the axis ZP of the longitudinal axis Z is located below the vertical center of the vertical axis Y or the vertical center H of the cylindrical body 17c of the vertical bearing member 17, and the longitudinal axis Z is close to the lower part of the vertical axis Y. Opposite. In FIGS.
- the support body 4 has left and right arm portions 4A projecting from the center in the left-right direction where the boss member 4a and the front and rear bearing members 21 are disposed, and the front surfaces of the outer ends of the left and right arm portions 4A are directed forward. It protrudes and the sliding part 4B is formed in this protrusion end.
- Each of the left and right sliding portions 4B is formed by fixing a flat plate to the front projecting end of the arm portion 4A.
- the front surface of the sliding portion 4B faces the back surface of the blade 5, and the radial direction from the front and rear axis Z
- the outer peripheral edge 4Ba and the inner peripheral edge 4Bb that are located apart from each other are formed in an arc shape centered on the front-rear axis Z.
- the outer end of the left and right (right) arm portion 4A protrudes rearward, and an angle pin 22 to which the cylinder rod S2a of the angle cylinder S2 is connected is attached.
- a rod cover 23 is connected to the cylinder rod S2a of the angle cylinder S2, and is fitted to the cylinder tube S2b so as to be slidable in the longitudinal direction.
- the cylinder tube S2b and the hydraulic hose connected thereto are protected by a tube cover 24 provided on the main member 15.
- the angle cylinder S2 is pivotally supported at the front-rear center or rear side of the dozer frame 3 and is disposed at the side of the dozer frame 3, so that the angle pin 22 can be used even if a cylinder having a necessary and sufficient stroke is used. Can be arranged close to the longitudinal position of the vertical axis Y, and the longitudinal dimension of the support 4 can be shortened. In addition, the angle of the angle cylinder S2 with respect to the center line connecting the vertical axis Y and the angle pin 22 is made close to a right angle, so that the expansion / contraction force of the angle cylinder S2 can be transmitted to the support 4 efficiently.
- the support 4 is provided with a cylinder support 28 on the upper surface of the outer end of one of the left and right (right) arms 4A.
- the bottom of the cylinder tube S3b of the tilt cylinder S3 is pivotally supported on the cylinder support 28 via a base shaft 29.
- the tip of the cylinder rod S3a of the tilt cylinder S3 is pivotally connected to a rod support 30 fixed to the back surface of the blade 5 via a connecting pin 31.
- the tilt cylinder S3 is shifted from the left and right center of the support 4 to one side (right side), and the rod support 30 is shifted from the left and right center to the opposite side of the tilt cylinder S3 at the upper part of the back surface of the blade 5.
- the cylinder rod S3a is located directly above the front-rear axis Z.
- the tilt angle L between the tilt cylinder S3 and the center line K is smaller than a right angle, but the front and rear axis Z is below the vertical center of the blade 5, so the sandwich angle L is larger than when it is above and Since the horizontal distance from the axis YP of the shaft Y to the connecting pin 31 is shorter than that of the base shaft 29, the included angle L can be made closer to a right angle, the rotation angle around the base shaft 29 can be reduced, and the tilt cylinder S3 The expansion / contraction force can be efficiently transmitted to the blade 5. Further, when the included angle L is made close to a right angle, the vertical swing of the tilt cylinder S3 during tilt swing is reduced, and the movement of the hydraulic hose 9 can be reduced.
- the hydraulic hose 9 connected to the cylinder tube S3b of the tilt cylinder S3 passes above the vertical axis Y and is opposite to the arrangement (right side) of the cylinder tube S3b in the left-right direction.
- the hydraulic hose 9 can be gently bent by being extended on the side portion (the left main member 15) of the dozer frame 3 and having a distance from the side portion of the dozer frame 3 to the cylinder tube S3b.
- the blade 5 has a back body 5A supported by the longitudinal axis Z, and a blade body 5B fixed to the front surface of the back body 5A and having an upper portion covering the upper edge of the back body 5A.
- the back body 5A and the blade body 5B include a middle reinforcing member 5C having a U-shaped cross section that reinforces the connection therebetween, and a lower reinforcing member that connects and reinforces the lower ends of the back body 5A and the blade body 5B.
- 5D and an upper reinforcing material 5E for connecting and reinforcing the upper ends of the back body 5A and the middle reinforcing material 5C.
- a blade edge 33 is detachably mounted on the lower front surface of the blade body 5B.
- the blade edge 33 is divided into a plurality of right and left parts (two parts), each of which is detachably fixed by a fastener such as a bolt or a countersunk screw penetrating the lower part of the blade body 5B and the lower reinforcing member 5D.
- the blade edge 33 can be used by replacing the other side edge by turning upside down when worn by using one side edge as the lower edge.
- the blade edge 33 has a lower edge protruding downward from the lower edge of the blade body 5B, and is a member that contacts the ground and scrapes off the soil.
- the lower reinforcing member 5D is provided with a plurality of ribs 5Db on the back surface of a plate member 5Da having a cross-sectionally U-shape (substantially L-shaped cross section) at intervals in the left-right direction.
- additional ribs are provided on the rib 5Db. 5Dc is fixed.
- the additional rib 5Dc of FIG. 2 protrudes downward from the lower edge of the plate material 5Da and the blade body 5B, and is in contact with the back surface of the blade edge 33.
- the lower edge of the blade edge 33 is the blade body 5B. Even if it protrudes downward from the lower edge, the lower end of the additional rib 5Dc is backed up.
- the additional rib 5Dc may be welded to the rib 5Db or may be bolted. By backing up the additional rib 5Dc, the blade edge 33 may protrude largely downward from the lower edge of the blade body 5B. It becomes possible.
- the rib 5Db may extend downward at its lower portion like the additional rib 5Dc and back up the lower end of the blade edge 33 at its lower end.
- the front surface of the blade body 5B is formed as an arc concave surface with the horizontal axis as the center of curvature, and the upper portion is formed with an upper portion 5Bb that is horizontal via a rounded portion 5Ba.
- the overlap is arranged so as to cover the upper portion 5Aa of the posture.
- a seat plate 34 is fixed to the lower portion of the back body 5A of the blade 5 in the left-right direction, and through holes 34a are respectively formed in the seat plate 34 and the back body 5A. And support holes 5Ab are formed.
- the front and rear shaft Z is provided with a mounting flange Za on the front side.
- the mounting flange Za is bolted to the seat plate 34, and the front end of the front and rear shaft Z passes through the through hole 34a and is supported by the support shaft Za. It is supported by the hole 5Ab. Therefore, the front / rear axis Z is fixed to the rear body 5A so as to protrude rearward, and is rotatably supported by the front / rear bearing member 21 of the support 4.
- the rod support 30 that connects the tip of the cylinder rod S3a of the tilt cylinder S3 is fixed to the upper portion 5Aa of the back tilting posture of the back surface 5A. It protrudes rearward, and can be arranged so that the cylinder rod S3a and the front-rear axis Z intersect each other in plan view.
- a cover member 8 that covers the upper side of the tilt cylinder S3 is attached to the upper part 5Aa of the back body 5A.
- the central cover portion 8A of the cover member 8 has a mountain shape in side view with raised front and rear intermediate portions, and is bolted to the upper portion 5Aa via stays 35 provided at both ends.
- the cover member 8 includes a central cover portion 8A that covers the tilt cylinder S3, and an extended cover portion 8B that extends from the central cover portion 8A and covers the left and right sliding portions 4B and the left and right inner and outer guide members 6 described later from above. And have.
- the front edge 8a of the cover member 8 is disposed behind the upper part 5Aa and below the horizontal upper part 5Bb of the blade body 5B.
- the upper part 5Aa is provided with a receiving member 25 for receiving the front edge 8a.
- the receiving member 25 is formed by forming a strip with a V-shaped cross section and is longer than the length of the left and right guide members 6, and prevents the earth and sand from dropping from the front edge 8a to the guide member 6 side. At the same time, deformation of the cover member 8 is also prevented.
- the cover member 8 is protected by the horizontal upper part 5Bb of the blade body 5B so that the obstacle does not collide with the front edge 8a even if there is an obstacle over the upper end of the blade body 5B. Even if the cover member 8 collides with an intermediate mountain part, the damage is less than when it collides with the front edge 8a.
- a central cover portion 8A of the cover member 8 projects rearward to the vicinity of the vertical axis Y, and a front hose cover 10F that covers the hydraulic hose 9 is attached to the front member 16 of the dozer frame 3 so as to face the central cover portion 8A.
- the front hose cover 10F includes a central portion 10Fa covering the upper side of the vertical axis Y, and a side portion 10Fb extending from the central portion 10Fa to the side and connected to the side hose cover 10S.
- a rising marker 40 is provided at the front end of the center portion 10Fa of the front hose cover 10F, and a pointer marker 41 is provided at the center of the center cover portion 8A of the cover member 8 so as to face the rising marker 40.
- the corner indicator 11 is constituted by the marker 40 and the pointer marker 41.
- the central cover portion 8A is positioned higher than the central portion 10Fa so that it does not collide even if it is operated at an angle.
- the angle indicator 11 is disposed on a plane that substantially passes through both the longitudinal axes YP and ZP of the longitudinal axis Y and the longitudinal axis Z, and the rising marker 40 is parallel to the longitudinal axis YP of the longitudinal axis Y and has the longitudinal axis Y. Projecting upward, the pointer marker 41 is positioned in front of the rising marker 40 and parallel to the axis YP of the vertical axis Y, and an inclined portion 41b inclined forward and upward from the upper end of the vertical portion 41a. have.
- the angle indicator 11 swings the inclined portion 41b of the pointer marker 41 around the rising marker 40, and the swing angle thereof in plan view.
- the vertical portion 41a and the inclined portion 41b of the pointer marker 41 swings so as to fall from the rising marker 40, and is viewed from the back.
- the tilt angle can be detected from the swing angle (as viewed from the traveling machine body 2 side).
- the pointer marker 41 is formed of only the vertical portion 41a, only the angle angle can be detected, and if only the inclined portion 41b or this portion is formed horizontally, only the tilt angle can be detected.
- the rising marker 40 and the pointer marker 41 of the corner display 11 are colored with each other or with a color different from that of the cover member 8 and the front hose cover 10F so as to be easily recognized.
- a pair of substrates 7 are fixed to the rear surface of the blade 5 on the left and right with the front-rear axis Z as a center, a slide plate 43 is disposed on the surface of each of the left and right substrates 7, and an arm portion 4A.
- a guide member 6 is provided for restricting the forward separation of the blade 5 while allowing relative vertical swinging with the sliding portion 4B at the tip.
- the slide plate 43 is sandwiched between the substrate 7 and the guide member 6 and is fastened together with the guide member 6.
- the slide plate 43 is in contact with the sliding portion 4B to back up and push the blade 5 forward. introduce.
- the guide member 6 is engaged with each of the substrates 7 in an outer peripheral guide member 6A that engages with the outer peripheral edge 4Ba of the sliding portion 4B in the radial direction of the longitudinal axis Z, and with the inner peripheral edge 4Bb of the sliding portion 4B.
- a circumferential guide member 6B is provided.
- the outer peripheral guide member 6A and the inner peripheral guide member 6B are detachably fixed by bolts (fasteners) 36 through spacers 12 having substantially the same thickness as the sliding portion 4B.
- the inner peripheral side protrudes radially inward from the spacer 12
- the outer peripheral side of the inner peripheral guide member 6B protrudes radially outward from the spacer 12
- each protruding portion is slidably engaged with the sliding portion 4B. Regulate the advance away.
- the inner and outer peripheral portions of the sliding portion 4B, the outer peripheral guide member 6A and the inner peripheral side of the spacer 12, the inner peripheral guide member 6B and the outer peripheral side of the spacer 12 have an arc shape with the longitudinal axis Z as the center of curvature, Further, the vertical centers of the sliding portion 4B and the outer circumferential guide member 6A are positioned higher than the axis ZP of the front-rear axis Z.
- the backhoe dozer apparatus 1 collides with the guide member 6 when the excavation operation is performed using the outrigger rather than the tilt swing.
- the guide member 6 is inclined back and forth with respect to the sliding portion 4B due to rattling or the like when the blade 5 is grounded.
- the upper and lower ends of the moving part 4B will come into contact with each other, and the upper and lower ends of the guide member 6 may be locally set (or worn), resulting in a decrease in durability.
- the guide member 6 with respect to the sliding portion 4B when the blade 5 is grounded is set.
- the contact is in the same direction at the part above the longitudinal axis Z, and the contact of the sliding portion 4B, the outer peripheral guide member 6A and the inner peripheral guide member 6B approaches the entire surface, and the one-contact (or uneven wear) is reduced, resulting in durability. Can be improved.
- the longitudinal axis Z at a low position in front of the longitudinal axis Y, the vertical height of the support 4 can be lowered, and the tilt cylinder S3 can be disposed above it, whereby the longitudinal axis Z It is possible to make the support 4 and the tilt cylinder S3 substantially fit within the range of the vertical dimension of the blade 5 while making it possible to efficiently transmit the acting force of the tilt cylinder S3 by increasing the distance from the connecting pin 31 to the connecting pin 31.
- the blade 5 or the work situation in front of it can be easily seen from the traveling machine body 2 side.
- the left and right inner circumferential guide members 6B are not symmetrically arranged, and the side (left side) on which the rod support 30 is arranged is arranged higher than the opposite side (right side), and the upper end of the left inner circumferential guide member 6B is on the left side.
- the upper end of the right outer peripheral guide member 6A is positioned lower than the upper end of the right outer peripheral guide member 6A.
- the blade 5 and the inner peripheral guide member 6B are attached to and detached from the support body 4 with the tilt cylinder S3 removed and the front and rear axis Z being pivotally deposited on the support body 4. As shown in FIGS.
- the slide plate 43 is a metal plate having a shape substantially similar to the substrate 7, and a lubricating oil passage M is formed on the center side of the surface in sliding contact with the sliding portion 4B.
- a plurality of bolt holes 43a through which the bolts 36 pass are formed on both the inner peripheral side and the outer peripheral side.
- the bolt hole 43a in the middle in the vertical direction on the inner peripheral side is formed as a long hole so that a dimensional error with the bolt 36 can be absorbed when the left and right slide plates 43 are attached to the left and right.
- the lubricating oil passage M includes a horizontal groove Ma having a length that extends substantially in the left-right direction in the middle in the vertical direction, and a cross groove Mb that intersects the horizontal groove Ma.
- the first oiling tool 44 is a grease nipple and is provided in the sliding portion 4B of the support body 4 in correspondence with the cross groove Mb. Even if the blade 5 tilts with respect to the support body 4, Lubricating oil (grease) is supplied from the cross groove Mb to the horizontal groove Ma so that the entire surface of the slide plate 43 can be lubricated.
- the crossing groove Mb is formed in a linear groove having a width wider than that of the horizontal groove Ma.
- the crossing groove Mb may be formed in an arc-shaped groove having substantially the same width or a narrow width as the horizontal groove Ma and centering on the front and rear axis Z. .
- the guide member 6 is provided with a second oiling tool 45 that supplies oil between the outer peripheral guide member 6A and the outer periphery of the sliding portion 4B.
- the second oil filler 45 is also a grease nipple, and a lubricating oil passage is formed on the inner surface of the outer peripheral guide member 6A that is in sliding contact with the sliding portion 4B, so that the sliding portion 4B Lubricating oil (grease) can be made to flow on the sliding contact surface.
- the second oil filler 45 is provided only on the outer peripheral guide member 6A, it may be provided on the inner peripheral guide member 6B to supply oil between the inner periphery of the sliding portion 4B.
- the slide plate 43 is mounted on the left and right sides of the blade 5 with the same shape upside down.
- the slide plate 43 is formed symmetrically on the front and back surfaces of the slide plate 43.
- the lubricating oil path M can be formed on the front and back of the slide plate 43 at once by penetrating the plate.
- the front and back surfaces are reversed and attached to the left and right of the blade 5 in the opposite direction, and the other unused surface can be used. Yes.
- the blade 5 is swung around the longitudinal axis Z with respect to the support 4 to be in an inclined posture.
- the inner peripheral guide member 6B is disengaged from the sliding portion 4B, and the blade 5 can be attached to and detached from the support body 4.
- the inner peripheral guide member 6 ⁇ / b> B (right side) that is separated from the lower side of the sliding portion 4 ⁇ / b> B and exposed from the support body 4
- the inner peripheral guide member 6B (left side) that can be arranged at the upper and lower centers but is separated from the upper side of the sliding portion 4B is not exposed from the support 4 unless it is arranged above the upper and lower centers of the substrate 7.
- a pair of left and right slide plates 43, an outer peripheral guide member 6A and an inner peripheral guide member 6B are mounted in advance on the back surface of the blade 5, and the front and rear shafts Z are connected to engage with the sliding portion 4B of the support 4.
- the inner peripheral guide member 6B (left side) may not be exposed from the support body 4, but in order to replace the inner peripheral guide member 6B with the front and rear shaft Z connected to the support body 4, the inner peripheral guide member 6B is changed. Since the bolt 36 to be fastened cannot be attached or detached unless it is visible from the rear, the inner peripheral guide member 6B is exposed from the support 4 in a state where the blade 5 is swung around the longitudinal axis Z with respect to the support 4 in an inclined posture. Need to be.
- the left and right outer peripheral guide members 6A and the inner peripheral guide member 6B can be used upside down at their mounting positions, and can be replaced by changing their positions to the left and right. Even if it hits and wears unevenly, each can be used four times.
- the substrate 7 has a position setting unit for setting the front and rear positions of the sliding portion 4B of the support 4 with respect to the substrate 7 when the support 4 is swung from the support 4 until the inner peripheral guide member 6B is exposed. 7a is provided.
- the rod support 30 is offset from the left and right center of the back body 5A to the side opposite to the cylinder tube S3b arrangement side (left side), and this rod support 30 protrudes above the support 4, so that the blade 5 is supported.
- the body 4 cannot swing toward the offset side (counterclockwise in FIG. 11), and cannot swing at a large angle unless it swings to the counter-offset side (clockwise in FIG. 11). Further, the rod support 30 is arranged so as to be shifted from the left and right center of the back body 5A to one side (left side) so that the blade 5 can be largely tilted.
- the sliding portion 4B is detached from the substrate 7 and the slide plate 43.
- the substrate 7 slide plate 43 moves backward, and the substrate 7 and the slide plate 43 collide with the sliding portion 4B when tilting.
- the sliding portion 4 B is provided. Removal from the substrate 7 and the slide plate 43 is prevented.
- the support 4 swings back and forth (angle swing) around the longitudinal axis Y, and when the tilt cylinder S3 is operated, the blade 5 moves around the front and rear axis Z. Swings up and down (tilt swing).
- the tilt cylinder S3 is provided between the back body 5A of the blade 5 and the support body 4, a cover member 8 that covers the tilt cylinder S3 from above is provided on the back body 5A, and the upper part of the blade body 5B is located on the back body 5A.
- the front edge 8a of the cover member 8 is disposed below the upper part 5Ba of the blade body 5B, and the collision object collides with the upper part 5Ba of the blade body 5B. However, it does not collide with the front edge 8a of the cover member 8.
- the cover member 8 has an extended cover portion 8B extending from the central cover portion 8A, covers the sliding portion 4B and the left and right guide members 6 from the upper side, and prevents the earth and sand from falling onto the engaging portion. Further, a receiving member 25 for receiving the front edge 8a of the cover member 8 is provided on the upper part 5Ab on the back surface of the blade 5, so that deformation of the cover member 8 is also prevented.
- the cover member 8 protrudes backward to the vicinity of the vertical axis Y, and a hose cover 10 is provided in the vicinity of the vertical axis Y of the dozer frame 3 to cover the hydraulic hose 9 reaching the tilt cylinder S3.
- the hose cover 10 and the cover member Since the angle display 11 is provided between the blade 8 and the angle indicator 8, the angle angle and / or the tilt angle of the blade 5 can be displayed. By arranging the angle display 11 on a plane that substantially passes through both the longitudinal axes Y and Z, the angle angle and / or the tilt angle can be displayed more accurately. Therefore, damage to the cover member for the tilt cylinder can be easily prevented with the blade.
- the support 4 swings back and forth (angle swing) about the longitudinal axis Y
- the tilt cylinder S3 is operated, the blade 5 swings up and down (tilt swing) about the front and rear axis Z.
- the tip of the cylinder rod S3a is connected to the blade 5 above the longitudinal axis Z, and the bottom of the cylinder tube S3b is further away from the longitudinal axis Z than the cylinder rod S3a.
- the front-rear axis Z is located immediately before the lower part of the vertical axis Y, the tilt cylinder S3 is located immediately above the front-rear axis Z, and the front-rear axis Z, the vertical axis Y, and the tilt cylinder S3 are compactly arranged in the front-rear direction and the vertical direction.
- the cylinder expansion / contraction force for tilting and swinging the blade 5 around the longitudinal axis Z can be transmitted efficiently.
- the cylinder tube S3b of the tilt cylinder S3 can be pulled away from the longitudinal axis Z, and the tip of the cylinder rod S3a can be disposed close to the longitudinal axis Z.
- the support 4 swings back and forth (angle swing) about the longitudinal axis Y, and when the tilt cylinder S3 is operated, the blade 5 swings up and down (tilt swing) about the front and rear axis Z. )
- the sliding portion 4B at the tip of the left and right arm portions 4A of the support 4 is engaged with the guide member 6 while allowing the blade 5 to swing relative to the vertical direction.
- the sliding portion 4B is used not only on the outer peripheral side but also on the inner peripheral side in the radial direction of the longitudinal axis Z.
- the outer peripheral side engages with an outer peripheral guide member 6A provided on the back surface of the blade 5, and the inner peripheral side is
- the support 4 engages with the inner periphery guide member 6B and acts on the blade 5 against the action force applied when the blade 5 is grounded or reversely moved after grounding (the force that moves the blade 5 forward from the support 4). Is sufficiently supported at two radial positions of the longitudinal axis Z.
- the arm portion 4A and the sliding portion 4B of the support 4 and the outer peripheral guide member 6A and the inner peripheral guide member 6B of the blade 5 are provided on the left and right sides of the front and rear axis Z, and the support 4 balances the blade 5 with left and right balance.
- the outer peripheral guide member 6A is located on the outer peripheral side of the sliding portion 4B, it is not hidden by the arm portion 4A of the support 4, but the inner peripheral guide member 6B overlaps with the arm portion 4A and is hidden by the arm portion 4A. Is in a position.
- the inner peripheral guide member 6B is disposed at a position exposed from the support 4 in a state where the tilt cylinder S3 is removed and the blade 5 is swung up and down around the longitudinal axis Z. Even in the supported state, the inner circumferential guide member 6B can be attached and detached from the back side of the blade 5.
- An outer peripheral guide member 6A and an inner peripheral guide member 6B are detachably fixed to a fixed substrate 7 on the back surface of the blade 5, and a position setting portion 7a is provided on the substrate 7. Even if the support body 4 is swung until the guide member 6B is exposed, the front and rear positions of the sliding portion 4B of the support body 4 with respect to the substrate 7 can be prevented.
- the blade 5 swings up and down (tilt swing) around the longitudinal axis Z.
- tilt swing the sliding portion 4B at the tip of the left and right arm portions 4A of the support 4 is engaged with the guide member 6 while allowing the blade 5 to swing relative to the vertical direction.
- the sliding portion 4B is used not only on the outer peripheral side but also on the inner peripheral side in the radial direction of the longitudinal axis Z.
- the outer peripheral side engages with an outer peripheral guide member 6A provided on the back surface of the blade 5, and the inner peripheral side is
- the support 4 engages with the inner periphery guide member 6B and acts on the blade 5 against the action force applied when the blade 5 is grounded or reversely moved after grounding (the force that moves the blade 5 forward from the support 4). Is sufficiently supported at two radial positions of the longitudinal axis Z.
- the arm portion 4A and the sliding portion 4B of the support 4 and the outer peripheral guide member 6A and the inner peripheral guide member 6B of the blade 5 are provided on the left and right sides of the front and rear axis Z, and the support 4 balances the blade 5 with left and right balance. To support.
- a slide plate 43 slidably in contact with the sliding portion 4B of the support 4 is provided on the fixed substrate 7 on the back surface of the blade 5, and the sliding resistance between the support 4 and the blade 5 can be reduced.
- the plate 43 is detachably fixed together with the guide member 6, that is, the bolt 36 for fastening the outer peripheral guide member 6A and the inner peripheral guide member 6B.
- the slide plate 43 is worn by sliding contact with the sliding portion 4B. Even if it removes with the guide member 6, it can replace and repair easily.
- the first oil filler 44 can be used from the side, and the oil supply between the guide member 6 and the arm portion 4A can be performed from the guide member 6 side via the second oil supplier 45.
- the arm portion 4A of the support 4 and the slide plate 43 and the guide member 6 of the blade 5 are provided on the left and right sides of the front and rear axis Z, and the slide plate 43 is formed so that the left and right mounting can be changed by reversing the front and rear surfaces.
- the front and back can be reversed and the back side can be used on the opposite side, and the cost can be reduced by using both the front and back sides.
- the present invention is best configured as shown in FIGS. 1 to 13 with respect to the shape of each member and the positional relationship between the front, back, left, and right in the above embodiment.
- a member, a structure can be variously deformed, and a combination can also be changed.
- the dozer device 1 may be a tilt dozer device that does not include the vertical axis Y and the angle cylinder S2.
- angle cylinders S2 may be provided on the left and right sides of the dozer frame 3, and the support 4 may be pivoted at a pair of left and right.
- the arm portion 4A and the sliding portion 4B of the support body 4 and the guide member 6 of the blade 5 may be only one of the left and right sides, but a pair of left and right is preferable because of a left-right balance.
- the angle cylinders S2 may be provided on the left and right sides of the dozer frame 3 so that the support body 4 is angle-swinged by a pair of left and right.
- the connecting pin 31 of the cylinder rod S3a may be arranged farther from the longitudinal axis Z than the base axis 29 of the cylinder tube S3b.
- the rod support 30 may be disposed at the center in the left-right direction of the blade 5 and the tip of the cylinder rod S3a of the tilt cylinder S3 may be disposed directly above the front-rear axis Z.
- the slide plates 43 are provided on the surfaces of the left and right substrates 7 as an example. However, the slide plates 43 are not necessarily provided.
- the present invention can be used as a work machine dozer device.
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Abstract
Description
また、特許文献2においては、ブレードに対して低い位置に前後軸を配置し、この前後軸の前端にブレードに取り付けられた縦軸を貫通し、ブレードに対して上部にチルトシリンダを設けている。
本発明は、このような従来技術の問題点を解決できるようにしたドーザ装置を提供することを目的とする。
即ち、本発明のドーザ装置は、走行機体に横軸廻りに枢支され、ドーザシリンダにより昇降するドーザフレームと、前記ドーザフレームに縦軸廻りに枢止され、アングルシリンダにより前後揺動する支持体と、前記支持体に前後軸廻りに枢止され、チルトシリンダにより上下揺動するブレードとを備え、前記支持体は前記縦軸の下部前方で前記前後軸を支持し、前記縦軸の上部前方でかつ前記前後軸の上方にチルトシリンダが配置されている点を特徴とする。
前記支持体を枢支する縦軸とブレードを枢支する前後軸とが別個に形成され、縦軸の下部前方に前後軸が位置するので、軸長を短くしかつ軸強度を確保することができる。
また、縦軸の上部前方でかつ前後軸の上方にチルトシリンダを配置することにより、前後軸からチルトシリンダまでの上下寸法を短くしてブレードの背面側の構造をコンパクトに構成できる。特に、前記チルトシリンダをブレードの略上端より下方に配置すると、ブレードの前方の視界が更に良好になる。
前記摺動部4Bの上下方向の中心より前後軸Zの軸心ZPが低いことにより、ブレード5を接地したときの荷重が前後軸Zより上のガイド部材6と摺動部4Bの面接触で支えられ、片当たりを減少して面当たりとなり、ヘタリ(又は偏摩耗)を減少できる。
前記左右各摺動部4Bは前後軸Zの径方向で外周側だけでなく内周側も使用されており、外周側はブレード5の背面に設けた外周ガイド部材6Aと係合し、内周側は内周ガイド部材6Bと係合し、ブレード5を接地したときまたは接地して後進するときに加わる作用力(支持体4からブレード5を前離れさせる力)に対して、支持体4はブレード5を前後軸Zの径方向遠近2位置で十分に支持する。
以下、本発明の実施の形態を図面に基づいて説明する。
図1~11において、符号1はチルト・アングルドーザ装置と称されるドーザ装置を示しており、バックホー等の走行機体2の前部に装着される。
前記ドーザ装置1は、走行機体2にドーザフレーム3を横軸Xを介して枢支し、ドーザシリンダS1で横軸X廻りに回動してドーザフレーム3を昇降自在にし、このドーザフレーム3に支持体4を縦軸Y(アングル支点軸)を介して枢支し、アングルシリンダS2で縦軸Y廻りに回動して支持体4を前後揺動(アングル揺動)自在にし、この支持体4にブレード5を前後軸Z(チルト支点軸)を介して枢支し、チルトシリンダS3で前後軸Z廻りに回動してブレード5を上下揺動(チルト揺動)自在に構成している。
前記主部材15は角筒体で、連結材18は円筒体で、前部材16は断面コ字形状体でそれぞれ形成され、前記縦軸受材17は、主部材15及び前部材16の前面に前面板17aを固着し、この前面板17aの前面に上下一対の平面視略三角形の板17bを固着し、この三角形の板17bの頂部に縦軸Yが挿通される円筒体17cを貫通固着して構成されている。
前記支持体4は、上板4uと下板4dとを縦板状の前板4fと後板4rとで連結し、前記上板4uと下板4dの各後方突出部に縦軸Yが挿通される上下ボス部材4aを固着し、前記下板4dと前板4fと後板4rとに前後軸Zを枢支するための前後軸受材21を固着して構成されている。
図1~9において、前記支持体4は前記ボス部材4a及び前後軸受材21を配置した左右方向中央部から左右にアーム部4Aが突出され、この左右各アーム部4Aの外端前面は前方に突出していて、この突出端に摺動部4Bが形成されている。
左右一方(右側)のアーム部4Aの外側端は後方に突出していて、アングルシリンダS2のシリンダロッドS2aが連結されるアングルピン22が取り付けられている。このアングルシリンダS2のシリンダロッドS2aにはロッドカバー23が連結されていて、シリンダチューブS2bに長手方向摺動自在に嵌合している。アングルシリンダS2は更に、主部材15に設けたチューブカバー24によってシリンダチューブS2b及びそれに接続された油圧ホースが保護されている。
また、縦軸Yとアングルピン22とを結ぶ中心線に対するアングルシリンダS2の挟角を直角に近づけて、アングルシリンダS2の伸縮力を効率良く支持体4に伝達することができるようになる。
前記チルトシリンダS3は支持体4の左右中央から一方(右側)にずれて配置され、ロッド支持体30はブレード5の背面の上部で左右中央よりチルトシリンダS3配置側と反対側にずれて配置されており、シリンダロッドS3aは前後軸Zの真上に位置する。
図1~11において、前記ブレード5は、前後軸Zに支持される背面体5Aと、この背面体5Aの前面に固定されていて上部が背面体5Aの上縁を覆うブレード本体5Bとを有する。前記背面体5Aとブレード本体5Bとは、それらの間でそれらの連結を補強する断面コ字形状の中補強材5Cと、前記背面体5Aとブレード本体5Bの下端同士を連結補強する下補強材5Dと、前記背面体5Aと中補強材5Cの上端同士を連結補強する上補強材5Eとによって補強されており、これら背面体5A、ブレード本体5B、中補強材5C、下補強材5D及び上補強材5Eの左右側端に側板5Fが固着されている。
ブレードエッジ33は下縁がブレード本体5Bの下縁より下方へ突出していて、接地して土を掻き取る部材となっている。前記下補強材5Dは断面くの字形状(断面略L字形状)の板材5Daの背面にリブ5Dbを左右方向間隔をおいて複数設けられており、図2においては、前記リブ5Dbに追加リブ5Dcを固定している。
前記追加リブ5Dcはリブ5Dbに溶着してもボルト締結してもよく、この追加リブ5Dcがバックアップすることにより、ブレードエッジ33は下縁をブレード本体5Bの下縁から下方へ大きく突出することが可能になる。
前記ブレード本体5Bは前面が水平軸線を曲率中心とする円弧凹面に形成され、上部はアール部5Baを介して水平状になった上部5Bbが形成され、この水平上部5Bbは背面体5Aの前傾姿勢の上部5Aaを覆うようにオーバラップ配置されている。
前記ブレード5の背面体5Aの左右方向中央の下部には、図2、7、9、10に示すように座板34が固着され、この座板34と背面体5Aとにはそれぞれ貫通孔34aと支持孔5Abとが形成されている。
従って、前後軸Zは背面体5Aに後方突出状に固定されていて、前記支持体4の前後軸受材21に回動自在に支持されている。
前記チルトシリンダS3のシリンダロッドS3aの先端を連結しているロッド支持体30は、背面体5Aの前傾姿勢の上部5Aaに固定されており、前記前後軸Zと略同量だけ背面体5Aから後方に突出しており、シリンダロッドS3aと前後軸Zとを平面視で交差するように配置可能にしている。
前記カバー部材8は、チルトシリンダS3を覆う中央カバー部8Aと、この中央カバー部8Aから延設されていて、後述する左右摺動部4B及び左右内外ガイド部材6を上側から覆う延長カバー部8Bとを有する。
前記カバー部材8は、ブレード本体5Bの上端を乗り越えてくる障害物があっても、ブレード本体5Bの水平上部5Bbで保護されて、その障害物が前縁8aと衝突しないようになっている。カバー部材8は中途の山部に障害物が衝突しても、前縁8aに衝突するよりも損傷は少ない。
前ホースカバー10Fの中央部10Faの前端には立ち上がりマーカ40が設けられ、この立ち上がりマーカ40に対向してカバー部材8の中央カバー部8Aの左右中央に指針マーカ41が設けられており、これら立ち上がりマーカ40及び指針マーカ41によって角表示具11が構成されている。前記中央カバー部8Aは中央部10Faより上位に位置し、アングル動作しても衝突しないようになっている。
前記角表示具11は、ブレード5が縦軸Y廻りに左右揺動(アングル揺動)すると、指針マーカ41の傾斜部41bが立ち上がりマーカ40を中心に揺動し、平面視においてその揺動角によりアングル角が検出でき、ブレード5が前後軸Z廻りに上下揺動(チルト揺動)すると、指針マーカ41の垂直部41a及び傾斜部41bが立ち上がりマーカ40から倒れるように揺動し、背面視(走行機体2側から見て)においてその揺動角によりチルト角が検出できる。
図1~13において、前記ブレード5の背面には、前記前後軸Zを中心として左右に一対の基板7が固着され、左右各基板7の表面にスライドプレート43が配置されるとともに、アーム部4A先端の摺動部4Bとの間の相対上下揺動を許容しながらブレード5の前離れを規制するガイド部材6が設けられている。
前記ガイド部材6は、それぞれの基板7に、前後軸Zの径方向で摺動部4Bの外周縁4Baと係合する外周ガイド部材6Aと、摺動部4Bの内周縁4Bbと係合する内周ガイド部材6Bとが設けられている。
前記外周ガイド部材6A及び内周ガイド部材6Bは、前記摺動部4Bと略同一肉厚のスペーサ12を介してボルト(締結具)36で着脱自在に固定されており、前記外周ガイド部材6Aの内周側はスペーサ12より径内側に突出し、内周ガイド部材6Bの外周側はスペーサ12より径外側に突出し、それぞれの突出部分が摺動部4Bと摺動可能に係合し、ブレード5の前離れを規制する。
バックホー用のドーザ装置1は、チルト揺動したときよりもアウトリガとして使用して掘削作業をするときに、摺動部4Bがガイド部材6と衝突する。ガイド部材6の上下方向の中心が前後軸Zと略同一高さにあると、ブレード5が接地することにより、ガタ等により摺動部4Bに対してガイド部材6が前後に傾斜するので、摺動部4Bの上下部で片当たりすることになり、ガイド部材6の上下端が局部的にヘタリ(又は摩耗)を生じ、耐久性が低下することがある。
また、前後軸Zを縦軸Yの前方で低位置に配置することにより、支持体4の上下高さを低くして、その上方にチルトシリンダS3を配置することができ、これにより前後軸Zから連結ピン31までの距離を長くとってチルトシリンダS3の作用力を効率よく伝達できるようにした上で、支持体4及びチルトシリンダS3をブレード5の上下寸法の範囲内に略納めることができ、走行機体2側からブレード5又はその前方の作業状況が見え易くなる。
前記支持体4に対するブレード5の着脱及び内周ガイド部材6Bの着脱は、チルトシリンダS3を外し、かつ前後軸Zを支持体4に回動自在に預けた状態で行われる。
図3、5、10~13に示すように、前記スライドプレート43は基板7と略相似形状の金属板であり、摺動部4Bと摺接する面の中央側に潤滑油路Mが形成され、内周側及び外周側の両側にそれぞれボルト36が貫通するボルト孔43aが複数形成されている。
前記潤滑油路Mは、上下方向中途部で左右方向略全幅に亘る長さの水平溝Maと、この水平溝Maと交叉している交叉溝Mbとを有し、第1給油具44から給油を受ける。
この第1給油具44はグリスニップルであり、前記支持体4の摺動部4Bに交叉溝Mbと対応して設けられており、前記支持体4に対してブレード5がチルト揺動しても交叉溝Mbから給油して水平溝Maに潤滑油(グリス)を流し、スライドプレート43の全面を潤滑できるようにしている。
前記ガイド部材6には、外周ガイド部材6Aと摺動部4B外周との間に給油する第2給油具45が設けられている。この第2給油具45もグリスニップルであり、摺動部4Bと摺接する外周ガイド部材6Aの内面に潤滑油路を形成しておいて、ブレード5がチルト揺動しても摺動部4Bとの摺接面に潤滑油(グリス)を流すことができるようになっている。
前記スライドプレート43は同一形状のものを表裏逆にしてブレード5の左右に取り付けられており、潤滑油路Mは浅溝に形成する場合は、スライドプレート43の表裏面に表裏対称形状に形成しなければならないが、プレートを貫通させれば潤滑油路Mをスライドプレート43の表裏に一度に形成できる。
前記スライドプレート43は、一面が摩耗すると、前後面を反転してブレード5の左右に反対勝手に取り付けて、未使用の他面を使用することができ、取り付け変更により表裏両面を使用可能にしている。
前後軸Zは支持体4の上下方向中央より下方に位置しているので、摺動部4Bの下部側で離脱して支持体4から露出する内周ガイド部材6B(右側)は、基板7の上下中央に配置できるが、摺動部4Bの上部側で離脱する内周ガイド部材6B(左側)は基板7の上下中央より上側に配置しなくては支持体4から露出しない。
前記基板7には、前記支持体4から内周ガイド部材6Bを露出するまで支持体4を揺動したときに、基板7に対する支持体4の摺動部4Bの前後位置を設定する位置設定部7aが設けられている。
ロッド支持体30は背面体5Aの左右中央からシリンダチューブS3b配置側と反対側(左側)にオフセットされており、このロッド支持体30は支持体4の上方まで突出しているので、ブレード5は支持体4に対して前記オフセット側(図11反時計方向)へは揺動できなく、反オフセット側(図11時計方向)へ揺動しなければ大きな角度の揺動はできない。また、ブレード5を大きく傾動できるように、ロッド支持体30を背面体5Aの左右中央から一方(左側)へずらして配置している。
前記チルトシリンダS3がブレード5の背面体5Aと支持体4との間に設けられ、チルトシリンダS3を上から覆うカバー部材8が背面体5Aに設けられ、ブレード本体5Bの上部は背面体5Aの上縁を覆う形状であって、その形状を利用して、カバー部材8の前縁8aをブレード本体5Bの上部5Baより下側に配置して、衝突物がブレード本体5Bの上部5Baに衝突してもカバー部材8の前縁8aと衝突しないようになっている。
カバー部材8は中央カバー部8Aから延設された延長カバー部8Bを有し、前記摺動部4B及び左右ガイド部材6を上側から覆い、係合部分への土砂の落下を防止する。
また、ブレード5の背面の上部5Abにはカバー部材8の前縁8aを受持する受け部材25が設けられていて、カバー部材8の変形も防止する。
この角表示具11を縦軸Y及び前後軸Zの両軸心を略通る面上に配置することにより、アングル角及び/又はチルト角をより正確に表示できる。
従って、チルトシリンダ用のカバー部材の破損をブレードで簡単に防止できる。
前記チルトシリンダS3はシリンダロッドS3aの先端が前後軸Zの上方でブレード5に連結され、シリンダチューブS3bのボトムがシリンダロッドS3aよりも前後軸Zから離れていて前記支持体4の左右方向外方へ突出したアーム部4Aに連結されており、前後軸ZとシリンダロッドS3aの先端の連結点とを結ぶ中心線に対してアングルシリンダS2の軸心がなす挟角は、シリンダロッドS3aがシリンダチューブS3bのボトムよりも前後軸Zから離れている場合よりも大きくなり、アングルシリンダS2の伸縮力を効率よく作用させることができる。
シリンダチューブS3bの配置と反対側のドーザフレーム3の側部上に油圧ホース9を延設することにより、油圧ホース9の弯曲を大きくでき、チルトシリンダS3作動時の油圧ホース9の動きを小さくできる。
前記摺動部4Bは前後軸Zの径方向で外周側だけでなく内周側も使用されており、外周側はブレード5の背面に設けた外周ガイド部材6Aと係合し、内周側は内周ガイド部材6Bと係合し、ブレード5を接地したときまたは接地して後進するときに加わる作用力(支持体4からブレード5を前離れさせる力)に対して、支持体4はブレード5を前後軸Zの径方向遠近2位置で十分に支持する。
前記外周ガイド部材6Aは摺動部4Bの外周側に位置するので支持体4のアーム部4Aによって隠れることはないが、内周ガイド部材6Bはアーム部4Aとオーバラップしてアーム部4Aによって隠される位置にある。この内周ガイド部材6Bを、チルトシリンダS3を外して前後軸Z廻りにブレード5を上下揺動した状態で前記支持体4から露出する位置に配置することにより、ブレード5を支持体4に枢支した状態でも内周ガイド部材6Bの着脱がブレード5の背面側から可能になる。
前記支持体4のアーム部4A及び摺動部4B並びに前記ブレード5の外周ガイド部材6A及び内周ガイド部材6Bは前後軸Zの左右に一対設けてあり、支持体4はブレード5を左右バランスよく支持する。
前記スライドプレート43に潤滑油路Mを形成しておくことにより、支持体4の摺動部4Bとの摺接が円滑になり、潤滑油路Mへの給油を支持体4の摺動部4B側から第1給油具44を介して行うことができ、また、ガイド部材6とアーム部4Aとの間への給油はガイド部材6側から第2給油具45を介して行うことができる。
チルト・アングルドーザ装置の場合は、アングルシリンダS2をドーザフレーム3の左右に設けて、左右一対で支持体4をアングル揺動させてもよい。
支持体4のアーム部4A及び摺動部4B並びにブレード5のガイド部材6は左右一方のみであってもよいが、左右一対ある方が左右バランスがとれて好ましい。
例えば、アングルシリンダS2はドーザフレーム3の左右に設けて、左右一対で支持体4をアングル揺動させてもよい。
前記チルトシリンダS3は、シリンダロッドS3aの連結ピン31をシリンダチューブS3bの基軸29よりも前後軸Zから遠くに離して配置してもよい。
ガイド部材6の内周ガイド部材6Bを割愛して外周ガイド部材6Aのみを設けると、支持体4に対してブレード5を装着したまま外周ガイド部材6Aの着脱ができ、内周ガイド部材6Bの着脱が不要になるので、ロッド支持体30をブレード5の左右方向中央に配置し、チルトシリンダS3のシリンダロッドS3aの先端を前後軸Zの真上に配置してもよい。
また、上述の実施形態では、左右各基板7の表面にスライドプレート43を設ける場合を例に説明したが、スライドプレート43は必ずしも設けなくてもよい。
本発明は、作業機のドーザ装置として利用可能である。
Claims (7)
- 走行機体に横軸廻りに枢支され、ドーザシリンダにより昇降するドーザフレームと、
前記ドーザフレームに縦軸廻りに枢止され、アングルシリンダにより前後揺動する支持体と、
前記支持体に前後軸廻りに枢止され、チルトシリンダにより上下揺動するブレードとを備え、
前記支持体は前記縦軸の下部前方で前記前後軸を支持し、前記縦軸の上部前方でかつ前記前後軸の上方にチルトシリンダが配置されているドーザ装置。 - 前記支持体は左右方向外方へ突出するアーム部と当該アーム部の先端に設けられ前記ブレードに対面する摺動部とを有し、前記ブレードの背面に前記摺動部との間の相対上下揺動を許容しながらブレードの前離れを規制するガイド部材が設けられ、前記摺動部の上下方向の中心より前記前後軸の軸心を低く設定している請求項1に記載のドーザ装置。
- 前記ガイド部材が、前記前後軸の径方向で摺動部の外周側と係合する外周ガイド部材と、前記摺動部の内周側と係合する内周ガイド部材とを有し、前記内周ガイド部材は前記ブレードに対して、前記チルトシリンダを外して前記前後軸廻りにブレードを上下揺動した状態で前記支持体から露出して着脱可能になる位置に配置されている請求項2に記載のドーザ装置。
- 前記チルトシリンダのシリンダロッドの先端をブレードの上部に連結し、シリンダチューブのボトムを前記支持体のアーム部の上面に連結しており、
前記チルトシリンダのシリンダチューブに接続された油圧ホースを、前記縦軸の上方を通過させて、左右方向において前記シリンダチューブの配置と反対側のドーザフレームの側部上に延設している請求項1に記載のドーザ装置。 - 前記ブレードは前記前後軸に支持される背面体と、この背面体の前面に固定されていて上部が前記背面体の上縁を覆うブレード本体とを有し、前記背面体と前記支持体との間で前記ブレード本体の上端よりも下方に前記チルトシリンダを配置し、前記背面体にチルトシリンダを上から覆うカバー部材を取り付けており、前記カバー部材の前縁をブレード本体の上部より下側に配置している請求項1に記載のドーザ装置。
- 前記ブレードの背面に前記支持体の摺動部と摺接するスライドプレートを前記ガイド部材と着脱自在に設け、前記ガイド部材は前後軸の径方向で摺動部の外周側と係合する外周ガイド部材と、摺動部の内周側と係合する内周ガイド部材とを有し、前記外周ガイド部材及び内周ガイド部材を前記スライドプレートを挟んでブレードに固定している請求項2に記載のドーザ装置。
- 前記スライドプレートに潤滑油路を形成し、この潤滑油路に給油する第1給油具を前記支持体のアーム部に設け、前記ガイド部材とアーム部との間に給油する第2給油具を前記ガイド部材に設けている請求項6に記載のドーザ装置。
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KR1020117002586A KR101303527B1 (ko) | 2008-08-04 | 2009-03-09 | 도저 장치 |
EP09804779.8A EP2319994A4 (en) | 2008-08-04 | 2009-03-09 | DOOR DEVICE |
CN200980130789XA CN102112686B (zh) | 2008-08-04 | 2009-03-09 | 推土机装置 |
US12/922,916 US8678103B2 (en) | 2008-08-04 | 2009-03-09 | Dozer apparatus |
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JP2008-200832 | 2008-08-04 | ||
JP2008200835A JP5285992B2 (ja) | 2008-08-04 | 2008-08-04 | ドーザ装置 |
JP2008200833A JP5285990B2 (ja) | 2008-08-04 | 2008-08-04 | ドーザ装置 |
JP2008-200833 | 2008-08-04 | ||
JP2008200832A JP5124385B2 (ja) | 2008-08-04 | 2008-08-04 | ドーザ装置 |
JP2008-200834 | 2008-08-04 | ||
JP2008-200835 | 2008-08-04 | ||
JP2008200834A JP5285991B2 (ja) | 2008-08-04 | 2008-08-04 | ドーザ装置 |
JP2008-315609 | 2008-12-11 | ||
JP2008315609A JP5286059B2 (ja) | 2008-12-11 | 2008-12-11 | ドーザ装置 |
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WO2010016292A1 true WO2010016292A1 (ja) | 2010-02-11 |
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PCT/JP2009/054402 WO2010016292A1 (ja) | 2008-08-04 | 2009-03-09 | ドーザ装置 |
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US (1) | US8678103B2 (ja) |
EP (1) | EP2319994A4 (ja) |
KR (1) | KR101303527B1 (ja) |
CN (1) | CN102112686B (ja) |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009215698A (ja) * | 2008-03-06 | 2009-09-24 | Yanmar Co Ltd | 作業車の排土装置 |
US10267015B2 (en) * | 2013-09-26 | 2019-04-23 | 9277-9347 Quebec Inc. | Surface-forming equipment and motorized surface-forming equipment |
US9765492B2 (en) * | 2014-04-28 | 2017-09-19 | Robert L. Beaird, Iii | Snowplow apparatus for a motor vehicle |
FR3037344B1 (fr) * | 2015-06-11 | 2019-06-14 | Abgralll Conception | Godet pour un vehicule destine a charger, deplacer, transporter, deverser et epandre un materiau en vrac |
WO2018179007A1 (en) * | 2017-03-29 | 2018-10-04 | Mahindra & Mahindra Ltd. | Motor grader mould board and variable length blade. |
CN109372045B (zh) * | 2018-12-13 | 2023-09-08 | 江苏徐工工程机械研究院有限公司 | 推土铲装置和推土机 |
US11913191B2 (en) * | 2019-11-06 | 2024-02-27 | 2376016 Alberta Inc. | Floating earth levelling blade assembly with shoes |
KR102510286B1 (ko) * | 2022-12-26 | 2023-03-24 | 주식회사 금아하이드파워 | 도저 블레이드 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61162639A (ja) | 1985-01-10 | 1986-07-23 | Caterpillar Mitsubishi Ltd | ブレ−ドを含む作業装置を備えた土工車輛 |
JPH07268909A (ja) * | 1994-03-30 | 1995-10-17 | Shin Caterpillar Mitsubishi Ltd | 作業用走行車におけるチルト型ドーザ |
JP2001164597A (ja) | 1999-12-06 | 2001-06-19 | Kubota Corp | 支点ピン構造体およびチルト・アングルドーザ装置 |
JP2006233641A (ja) * | 2005-02-25 | 2006-09-07 | Hitachi Constr Mach Co Ltd | 建設機械の排土装置 |
Family Cites Families (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2224725A (en) * | 1939-01-19 | 1940-12-10 | Jr George H Felt | Bulldozer blade tilting device |
US2308535A (en) * | 1941-09-04 | 1943-01-19 | Bucyrus Erie Co | Bulldozer |
US2749630A (en) * | 1951-04-19 | 1956-06-12 | Sherlock E Nave | Bulldozer blade |
US2753638A (en) * | 1951-11-05 | 1956-07-10 | Bucyrus Erie Co | Adjustable bulldozer |
US2950550A (en) * | 1959-05-26 | 1960-08-30 | Deere & Co | Bulldozer |
US3083480A (en) * | 1960-10-28 | 1963-04-02 | Int Harvester Co | Tilt and pitch dozer construction |
US3084461A (en) * | 1960-11-23 | 1963-04-09 | Eimco Corp | Material handling machine |
US3246406A (en) * | 1963-06-27 | 1966-04-19 | M R S Mfg Company | Bulldozer having a universal blade mounting |
US3670825A (en) * | 1969-10-09 | 1972-06-20 | Caterpillar Tractor Co | Power angling bulldozer |
US3648782A (en) * | 1969-11-19 | 1972-03-14 | Gen Motors Corp | Multipurpose bulldozer assembly |
US3773116A (en) * | 1971-03-01 | 1973-11-20 | J Coontz | Bulldozer means with a pivotable blade |
US3795280A (en) * | 1972-06-23 | 1974-03-05 | Caterpillar Tractor Co | Three-way lever control for hydraulic control circuit |
US3822751A (en) * | 1973-06-12 | 1974-07-09 | Valley Engineering | Mounting assembly for attaching a material treating blade to a vehicle |
US3926263A (en) * | 1974-06-06 | 1975-12-16 | Case Co J I | Power tilt dozer and reel carrier |
DE2559040C3 (de) * | 1975-01-06 | 1979-01-18 | Mitsubishi Jukogyo K.K., Tokio | Planierfahrzeug mit einem Planierschild |
US4083414A (en) * | 1975-12-30 | 1978-04-11 | Kabushiki Kaisha Komatsu Seisakusho | Combination angling-tilting bulldozer |
US4249323A (en) * | 1978-06-19 | 1981-02-10 | De Lorean Manufacturing Company | Variable wing plow blade and mounting structure therefor |
US4337837A (en) * | 1978-10-12 | 1982-07-06 | J. I. Case Company | Mounting mechanism for angle dozer blade |
US4281721A (en) * | 1978-12-12 | 1981-08-04 | Beales Steel Products Ltd. | Bulldozer blade mounting assembly |
US4221267A (en) * | 1979-01-29 | 1980-09-09 | Caterpillar Tractor Co. | Angle and tilt implement assembly |
USRE31642E (en) * | 1979-01-29 | 1984-08-07 | Caterpillar Tractor Co. | Angle and tilt implement assembly |
US4364439A (en) * | 1981-04-27 | 1982-12-21 | Caterpillar Tractor Co. | Implement assembly with pivot connection |
US4424871A (en) * | 1982-05-17 | 1984-01-10 | Deere & Company | Tilting and angling mechanism for dozer blade |
US4848483A (en) * | 1987-04-13 | 1989-07-18 | Rockland, Inc. | Tool attachment means for tractors |
US4828044A (en) * | 1987-08-07 | 1989-05-09 | J. I. Case Company | Dozer blade mounting assembly |
US4893683A (en) * | 1987-08-07 | 1990-01-16 | J. I. Case Company | Dozer blade mounting assembly |
US4828045A (en) * | 1987-11-09 | 1989-05-09 | J. I. Case Company | Dozer blade visual tilt indicator |
US5447204A (en) * | 1993-09-24 | 1995-09-05 | Caterpillar Inc. | Bulldozer assembly with angle, tilt and pitch control |
US5562398A (en) * | 1995-01-05 | 1996-10-08 | Knutson; Kenneth | Skid steer loader tiltable attachment |
US5938399A (en) * | 1997-06-26 | 1999-08-17 | Knutson; Ken | Skid steer loader rotatable attachment |
US6360459B1 (en) * | 2000-05-12 | 2002-03-26 | Caterpillar Inc. | Tiltable bucket assembly |
US6668471B1 (en) * | 2000-09-01 | 2003-12-30 | Excavation Technology Corporation | Towable earth digging apparatus |
US7013983B2 (en) * | 2003-06-18 | 2006-03-21 | Komatsu Ltd. | Blade mounting structure of bulldozer |
CN1253634C (zh) * | 2004-01-02 | 2006-04-26 | 三一重工股份有限公司 | 全液压推土机 |
-
2009
- 2009-03-09 EP EP09804779.8A patent/EP2319994A4/en not_active Withdrawn
- 2009-03-09 KR KR1020117002586A patent/KR101303527B1/ko not_active IP Right Cessation
- 2009-03-09 US US12/922,916 patent/US8678103B2/en active Active
- 2009-03-09 CN CN200980130789XA patent/CN102112686B/zh not_active Expired - Fee Related
- 2009-03-09 WO PCT/JP2009/054402 patent/WO2010016292A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61162639A (ja) | 1985-01-10 | 1986-07-23 | Caterpillar Mitsubishi Ltd | ブレ−ドを含む作業装置を備えた土工車輛 |
JPH07268909A (ja) * | 1994-03-30 | 1995-10-17 | Shin Caterpillar Mitsubishi Ltd | 作業用走行車におけるチルト型ドーザ |
JP2001164597A (ja) | 1999-12-06 | 2001-06-19 | Kubota Corp | 支点ピン構造体およびチルト・アングルドーザ装置 |
JP2006233641A (ja) * | 2005-02-25 | 2006-09-07 | Hitachi Constr Mach Co Ltd | 建設機械の排土装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2319994A4 * |
Also Published As
Publication number | Publication date |
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EP2319994A1 (en) | 2011-05-11 |
CN102112686A (zh) | 2011-06-29 |
KR20110038099A (ko) | 2011-04-13 |
US20110067892A1 (en) | 2011-03-24 |
CN102112686B (zh) | 2013-08-28 |
US8678103B2 (en) | 2014-03-25 |
KR101303527B1 (ko) | 2013-09-03 |
EP2319994A4 (en) | 2013-12-25 |
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