WO2004058625A1 - 自走式作業機械 - Google Patents
自走式作業機械 Download PDFInfo
- Publication number
- WO2004058625A1 WO2004058625A1 PCT/JP2003/016269 JP0316269W WO2004058625A1 WO 2004058625 A1 WO2004058625 A1 WO 2004058625A1 JP 0316269 W JP0316269 W JP 0316269W WO 2004058625 A1 WO2004058625 A1 WO 2004058625A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boom
- cylinder
- self
- vehicle body
- ground
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/24—Safety devices, e.g. for preventing overload
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
- B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
-
- 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
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/283—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis
- E02F3/286—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis telescopic or slidable
Definitions
- the present invention relates to a self-propelled work machine including a self-propelled body such as a lift truck.
- lift trucks are known as self-propelled working machines used for carrying cargo (loading work) from the ground to a high place.
- the lift truck includes a self-propelled vehicle body provided with left and right front wheels and left and right rear wheels, a boom provided on the vehicle body so as to be able to undulate, and a boom of the boom. It is composed of a work implement such as a cargo implement rotatably provided at the distal end side, and a work implement cylinder provided between the cargo implement and the boom for rotating the cargo implement relative to the boom.
- a work implement such as a cargo implement rotatably provided at the distal end side
- a work implement cylinder provided between the cargo implement and the boom for rotating the cargo implement relative to the boom.
- the lift truck for example, loads cargo on a fork of cargo handling equipment with the boom lying down on the ground side, and then raises the loaded cargo by raising the boom. It is transported to the place.
- the work implement cylinder provided between the boom and the work implement rotates the cargo implement in accordance with the boom undulation angle, so that the fork of the cargo implement has a substantially horizontal posture. It is designed to transport the stored luggage in a stable state.
- the working tool cylinder used for the above-mentioned lift truck is usually mounted on the pot side with a boom.
- the tip of the rod of the work implement cylinder protrudes downward from the underside of the vehicle to the ground.
- another self-propelled work machine includes a bucket for excavating earth and sand and a hydraulic cylinder for driving the bucket, and a lock projecting from a tube of the hydraulic cylinder.
- a hydraulic shovel having a structure in which a cover is covered with a tubular (tubular) cover (for example, Japanese Patent Application Laid-Open No. 2000-82414).
- the cover according to the related art is formed in a cylindrical shape having a larger diameter than the tube of the hydraulic cylinder, and one end in the length direction is attached to a tip end of a rod protruding from the tube. Thereby, the outer peripheral side of the rod can be always covered with the cover, and it is possible to prevent the sand from colliding with the rod.
- the force bar of the hydraulic cylinder used in other conventional technologies has a configuration in which one end in the length direction is attached to the tip end of the rod. For this reason, when earth and sand collide with the cover, the impact of this is transmitted to the mouth through the force par. As a result, there is a problem that the rod is deformed or damaged.
- the present invention has been made in view of the above-mentioned problems of the related art, and can protect a work implement cylinder from obstacles, and can smoothly operate the work implement cylinder for a long period of time.
- the aim is to provide a self-propelled work machine that is capable of performing the following tasks.
- the present invention provides a self-propelled vehicle body provided with left and right front wheels and left and right rear wheels, a boom provided on the vehicle body so as to be able to move up and down, A work implement rotatably provided at the tip of the boom, and one end in the axial direction is mounted between the work implement and the boom, and the other end is attached to the work implement and work on the boom Applied to a self-propelled work machine equipped with a work tool cylinder for rotating tools.
- the configuration adopted by the present invention is characterized in that a boom mounting member having a boom connecting portion rotatably connected to the end of the boom is provided on the back side of the working tool located on the vehicle body side. And a cylinder mounting member having a cylinder connecting portion to which the other end of the mounting cylinder is rotatably connected.
- the cylinder mounting member has a boom that protrudes from the rear side of the working tool toward the vehicle body.
- the height of the protection projection from the ground when the boom is lying down on the ground side is set to be smaller than the height from the ground to the lower surface of the vehicle body.
- the height of an obstacle that may collide with the work implement cylinder when the vehicle moves backward with the boom prone on the ground side is the height dimension from the ground to the lower surface of the vehicle body.
- the protection projection is not unnecessarily enlarged without increasing the protection projection. The projections can reliably protect the implement cylinder from obstacles on the ground.
- the protection projection is configured to be bent obliquely upward from the cylinder connecting portion of the cylinder mounting member toward the working tool cylinder.
- the protection projection is configured as an arc-shaped projection that bends in an arc shape and extends toward the work tool cylinder side around the boom connecting portion of the boom attachment member that constitutes the work tool.
- the protection projection is Since the rotation is performed so as to draw an arc toward the work tool cylinder, it is possible to suppress the protection projection from interfering with the work tool cylinder.
- the protective projection is formed by a member separate from the cylinder mounting member, and is configured to be detachably mounted on the cylinder mounting member.
- the protective projection is constituted by a pair of left and right plate-like members that sandwich the other end of the working tool cylinder from the left and right directions.
- the other end of the work implement cylinder can be sandwiched by the pair of plate-shaped protection protrusions.
- a work implement cylinder comprising: a tube having one end in an axial direction connected to a boom; ⁇ Consists of a fitted piston and a rod having one end in the axial direction attached to the piston and the other end protruding from the tube and connected to the cylinder connecting portion of the cylinder mounting member.
- the protection projection is configured to protect the other end of the rod.
- a boom having a cylindrical outer boom whose base end is mounted on a vehicle body so as to be able to be raised and lowered, and an inner boom provided with a cylinder mounting portion at a distal end side so as to be retractably accommodated in the outer boom.
- a boom cylinder having a proximal end attached to the outer boom and a distal end attached to a cylinder attaching portion of the inner boom is provided outside the outer boom, and a distal end of the outer boom is provided.
- an opening for storing the cylinder mounting portion at a position retracted from the tip end of the outer boom can be provided.
- the outer boom is constituted by a cylindrical body for accommodating the inner boom, and a frame fixed to the distal end side of the cylindrical body, and the inner boom of the frame has a cylindrical structure.
- the opening is provided at a position corresponding to the solder mounting part.
- FIG. 1 is a front view showing a lift truck to which the first embodiment of the present invention is applied.
- FIG. 2 is an enlarged front view showing the main parts of the boom, the cargo handling equipment, the fork cylinder, the protection projection, and the like in FIG.
- FIG. 3 is a left side view of the boom, cargo handling equipment, fork cylinder, and the like, as viewed from the direction of arrows III-III in FIG.
- FIG. 4 is a perspective view showing the cargo handling device according to the first embodiment by itself.
- Fig. 5 is a vertical cross-sectional view of the boom head, cargo handling equipment, fork cylinder, protective protrusions, etc., taken from the direction indicated by the arrows V-V in Fig. 3, showing the fork cylinder rod extended. is there.
- FIG. 6 is a vertical sectional view similar to FIG. 5 showing a boom head, a cargo handling device, a fork cylinder, a protection protrusion, and the like in a state where a rod of the fork cylinder is reduced.
- FIG. 7 is an exploded perspective view showing a cargo implement and a protection plate according to the second embodiment.
- FIG. 8 shows the working device used in the third embodiment as a boom. It is a front view which shows in the state which reduced.
- FIG. 9 is a vertical cross-sectional view showing a main part of a working device applied to the third embodiment as a cross section.
- FIG. 10 is a perspective view showing the distal end side of the first stage boom.
- FIG. 11 is a front view showing a working device applied to the third embodiment with the boom extended.
- FIG. 12 is a longitudinal sectional view similar to FIG. 5 showing a boom head, a cargo implement, a fork cylinder, a protection protrusion, and the like according to the fourth embodiment.
- FIG. 13 is a perspective view showing a cargo handling device according to the fourth embodiment.
- FIG. 14 is a longitudinal sectional view similar to FIG. 5, showing a modification of the protective projection.
- FIGS. 1 to 6 show a first embodiment of the present invention.
- reference numeral 1 denotes a lift truck
- the lift truck 1 is roughly composed of a self-propelled wheel-type vehicle body 2 and a working device 11 described later. I have.
- the lift truck 1 configured as described above performs a cargo handling operation of transporting the luggage from the ground to a high place using the working device 11 while running the vehicle body 2.
- the vehicle body 2 includes a frame 3 formed of a thick steel plate or the like and extending forward and backward, and a driving source (an engine, a hydraulic pump, a hydraulic motor, and the like) mounted on the frame 3. (Both are not shown) and a cabin 6 described later. Have been.
- the front of frame 3 is provided with left and right front wheels 4 (only the left side is shown), and the rear of frame 3 is provided with left and right rear wheels 5 (only the left side is shown). I have.
- the left and right front wheels 4 and the left and right rear wheels 5 are simultaneously driven to rotate by a traveling hydraulic motor (not shown), so that the vehicle body 2 is in a four-wheel drive state. Perform forward travel in the direction of arrow F or reverse travel in the direction of arrow R.
- the height from the ground to the lower surface 2A of the vehicle body 2 (the lower surface 3A of the frame 3) is set to the height dimension H
- the vehicle body 2 is a stone having a height lower than the height dimension H. It can pass over obstacle A.
- Numeral 6 designates a cab located between the front wheels 4 and the rear wheels 5 on the left side and in front of and behind the frame 3 at the center thereof, and the cab 6 defines a cab.
- a driver's seat on which the operator sits, a steering device for steering the front wheels 4 and the rear wheels 5, an operation lever for operating a working device 11 described later, and the like (both not shown) are provided in the cabinet 6. It is provided.
- left and right outriggers 7 are provided in front of the front wheel 4.
- the outrigger 7 is configured to separate the grounding plate 7A from the ground when the vehicle body 2 is traveling, and to ground the grounding plate 7A to the ground during loading and unloading using the working device 11 so that the unloading work can be performed. It ensures the stability of the vehicle body 2 at the time.
- Reference numeral 11 denotes a working device for loading and unloading work provided on the vehicle body 2 so as to be able to undulate.
- the working device 11 includes a boom 12, a boom undulating cylinder 18, a first-stage boom cylinder 19, Consists of cargo handling tools 21 and fork cylinders 27, etc. It is a cargo handling work that transports the load loaded on tool 21 from the ground to a high place.
- the 1 2 is a telescopic boom that constitutes the working device 11, and the boom 1 2 is a first-stage boom 13 having a rectangular tubular shape and can be extended and retracted into the first-stage boom 13.
- a second-stage boom 14 having a square tubular shape fitted into the second stage boom;
- a third-stage boom 15 having a square tubular shape fitted into the second-stage boom 14 so as to be able to expand and contract;
- a boom head 16 fixedly provided on the distal end side of the step boom 15.
- the base end of the first-stage boom 13 is configured to be able to be raised and lowered using pins 17 at the rear end of the frame 3 constituting the vehicle body 2.
- the boom head 16 is, as shown in Figs. 3 and 5, a hollow surrounded by a front plate 16A, a rear plate 16B, and left and right side plates 16C and 16C. It has a simple box structure and extends obliquely downward from the third stage boom 15.
- a cylindrical boss 16 D for mounting a boom mounting plate 24 of the cargo handling device 21, which will be described later.
- a bracket 16E is provided inside the boom head 16.
- the rear plate 16B of the boom head 16 has an opening 16F for allowing a rod 27C of a fork cylinder 27 described later to protrude to the outside of the boom head 16. Is formed.
- Reference numeral 18 denotes a boom undulating cylinder provided between the first-stage boom 13 and the frame 3 of the vehicle body 2.
- the boom undulating cylinder 18 has a bottom end pin-connected to the frame 3.
- the rod 18B is fixedly connected to the first stage boom 13 and the rod 18B is pin-coupled to an intermediate portion in the length direction of the first stage boom 13.
- the boom undulating cylinder 18 extends and retracts the rod 18B with respect to the tube 18A, thereby lowering the boom 12 on the ground side with the pin 17 as a center. It raises and lowers between a position (the position shown by the solid line in Fig. 1) and the standing position rising from the ground (the position shown by the two-dot chain line in Fig. 1).
- Reference numeral 19 denotes a first-stage boom cylinder provided between the first-stage boom 13 and the second-stage boom 14, and the first-stage boom cylinder 19 has a bottom-side first-stage boom 13.
- a tube 19A pin-connected to the rear end of the tube, a piston (not shown) slidably fitted into the tube 19A, and a base end fixed to the piston.
- the distal end is constituted by a rod 19B pin-connected to the distal end of the second stage boom 14.
- the first-stage boom cylinder 19 expands and contracts the rod 19B with respect to the tube 19A, thereby forming the second-stage boom 14 with respect to the first-stage boom 13. It expands and contracts.
- a second-stage boom cylinder (not shown) is provided between the second-stage boom 14 and the third-stage boom 15.
- the second stage boom cylinder is synchronized with the first stage boom cylinder 19 when the second stage boom 14 expands and contracts with respect to the first stage boom 13.
- the third-stage boom 15 is extended and contracted with respect to the boom 14. For this reason, the second stage boom cylinder supplies and discharges the pressurized oil simultaneously with the first stage boom cylinder 19.
- the cargo handling equipment 21 is a cargo handling device as a working tool usually called an attachment, and the cargo handling device 21 is a tip of the boom 12 (boom). It is attached to the head 16) so that it can rotate up and down around a pin 25 described later.
- the cargo handling equipment 21 is composed of a frame 22, a fork 23, a boom mounting plate 24, a cylinder mounting bracket 26, and the like, which will be described later. Have been.
- Reference numeral 22 denotes a rectangular frame that forms the base of the cargo handling equipment 21.
- the frame 22 is formed of left and right side plates 22A and 22A facing each other in the left and right directions.
- Reference numerals 23 and 23 denote left and right forks provided on the front side of the frame 22.
- Each of the forks 23 is formed by bending a thick steel plate or the like into an L shape. Is formed.
- Each of the forks 23 has its upper end fixed to the intermediate beam 22D of the frame 22 and its lower end abutted or fixed to the lower beam 22C of the frame 22.
- the lower end of each of the forks 23 is formed as a receiving surface 23A protruding forward from the lower beam 22C of the frame 22, and the load is received on the receiving surface 23A. It is configured to be loaded.
- each of the boom mounting plates 24 is provided on the rear side of the frame 22 on the vehicle body 2 side. I have.
- each boom mounting plate 24 is formed in a substantially triangular shape using, for example, a thick steel plate material, and the upper end is fixed to the upper beam 22B of the frame 22 and the lower end is the lower beam. Fixed to 22C.
- each boom mounting plate 24 The intermediate portion is a projecting portion 24 A projecting toward the vehicle body 2.
- the overhanging portion 24A has a pin ⁇ through hole 24 as a boom connecting portion rotatably connected to the tip of the boom head 16 via a pin 25 described later. B is formed.
- the boss 16 b of the boom head 16 is located between the overhangs 24 A of the left and right boom mounting plates 24.
- the pin 25 is passed through the post portion 16D and the pin hole 24B of each of the pum mounting plates 24.
- the cargo handling device 21 is attached to the tip end of the boom 12 around the pin 25 so as to be pivotable upward and downward. Therefore, the pin 25 constitutes a connecting means between the pin through hole 24 B of the boom mounting plate 24 and the boss 16 D of the boom head 16 constituting the cargo handling tool 21.
- each of the cylinder mounting brackets 26 is located between the left and right boom mounting plates 24 and has a frame body. It is provided on the back side of 22.
- each of the cylinder mounting brackets 26 is formed in a substantially J-shape using, for example, a thick steel plate material, and the upper end side is fixed to the upper beam 22B of the frame 22.
- the lower end side is fixed to the lower beam 22C, and the vertical plate portion 26A extending upward and downward, and the pin bout hole 24b of the boom mounting plate 24 described above are located below the hole 24b.
- An overhang portion 26B that extends substantially horizontally from the lower end side of the vertical plate portion 26A toward the vehicle body 2, and a pin hole 2 as a cylinder connecting portion provided at the overhang portion 26B. 6C.
- the pin through hole 26 C is located below the pin through hole 24 B of the bumper mounting plate 24 in the overhang portion 26 B. And it is provided at a position closer to the vehicle body 2 than the pin hole 24B.
- the other end of the working tool cylinder 27 is rotatably connected to the pin through hole 26C via a pin 29 described later.
- a protection projection 26D which will be described later, is formed at the tip of the overhang portion 26B beyond the pin hole 26C.
- Reference numeral 27 denotes a fork cylinder as a working tool cylinder provided between the frame 22 of the cargo handling equipment 21 and the boom head 16 of the boom 12.
- Numeral 7 is for rotating the cargo handling equipment 21 up and down with respect to the boom 12.
- the fork cylinder 27 has a tube 27A disposed in the boom head 16 and a biston slidably fitted in the tube 27A. 27 B, and a mouth 27 C having one end in the axial direction attached to the piston 27 B and the other end protruding from the tube 27 A.
- the rod 27C which is the other end in the axial direction of the fork cylinder 27, protrudes outside the boom head 16 through the opening 16F, and the mounting boss 27 D is provided.
- the mounting boss 27 D is inserted into the pin through hole 26 C while being sandwiched between the projecting portions 26 B of the left and right cylinder mounting brackets 26. It is mounted on each cylinder mounting bracket 26 using 9.
- pin 29 is A connection means is formed between the pin hole 26 C of the cylinder mounting bracket 26 constituting 21 and the rod 27 C of the fork cylinder 27.
- the cargo handling device 21 is moved to the boom 12 (boom head 16) as shown in FIGS. 5 and 6.
- the boom 12 can rotate up and down around pin 25. Therefore, when the boom 12 is moved from the prone position shown by the solid line in FIG. 1 to the upright position shown by the two-dot chain line, the cargo handling device 21 is rotated according to the up / down angle of the boom 12.
- the load receiving surface 23A of each fork 23 can be maintained at a substantially horizontal position at all times, and the load loaded on the load receiving surface 23A can be stably maintained from above the ground. It can be transported to
- 26 D and 26 D are left and right cylinder mounting brackets 2
- each of the protection projections 26D is located below the pin hole 24b of the boom mounting plate 24 of the cylinder mounting bracket 26. It is formed integrally with the tip of the overhanging part 26B.
- each protection projection 26 D is formed as a pair of left and right plate-like members sandwiching the tip side of the rod 27 C of the fork cylinder 27 from the left and right directions.
- 6 B pin through hole 2 6. It is bent obliquely upward toward the fork cylinder 27 from, and protrudes toward the vehicle body 2. Then, as shown in FIGS.
- the protective projections 26 D move backward in the direction indicated by the arrow R with the boom 12 prone to the ground, and the lower surface of the body 2
- 2 A passes over obstacle A on the ground, it collides with obstacle A before rod 27 C of fork cylinder 27, causing rod 2 to crash.
- 7 C It protects against harmful substance A.
- the height h from the ground when the boom 12 is turned down on the ground side is defined as the height h from the ground to the lower surface 2 A of the vehicle body 2.
- an obstacle A that may collide with the rod 27C of the fork cylinder 27 is moved from the ground to the vehicle body. It is considered that it is lower than the height dimension H up to 2 A of the lower surface of 2. Therefore, by setting the height dimension h of the protection projection 26 D from the ground to be lower than the height dimension H from the ground to the lower surface 2 A of the vehicle body 2, the protection projection 26 D is formed.
- the configuration is such that it can be prevented from becoming unnecessarily large.
- the protection projection 26 D is fork-mounted around the pin 25 passed through the pin through-hole 24 B of the boom mounting plate 24 constituting the cargo handling tool '21. It is configured as an arc-shaped projection that bends in an arc shape and extends to the rod 27 C side of the cylinder 27.
- the rod 27 C of the fork cylinder 27 is reduced into the tube 27 A, and the cargo handling device 21 is moved upward with the pin 25 as a center.
- the protection protrusion 26D is rotated downward, the protection protrusion 26D rotates so as to draw an arc around the pin 25 toward the rod 27C side.
- the structure is such that 26 D does not interfere with the tube 27 A of the fork cylinder 27.
- the lift truck 1 according to the present embodiment has the above-described configuration, and its operation will be described below.
- the operator in the cab 6 operates the operating lever (not shown) for the working device 11, whereby the boom raising / lowering cylinder 18, the first stage boom cylinder 19, and the second Supply and discharge pressure oil from a hydraulic pump (not shown) to a step cylinder (not shown).
- the boom 12 is moved from the prone position (the position shown by the solid line in FIG. 1) to the upright position (the position shown by the two-dot chain line in FIG. 1) by the boom undulating cylinder 18.
- the first-stage boom cylinder 19 and the second-stage boom cylinder extend the first-stage boom 13 of the boom 12 to the second-stage boom 14 and the third-stage boom 15.
- the fork cylinder 27 operates in conjunction with the boom hoist cylinder 18, and the fork cylinder 27 moves the cargo handling device 21 to the boom head 1 according to the hoisting angle of the boom 12. Rotate up and down with respect to 6. This allows the load receiving surface 23A of each fork 23 to be kept in a substantially horizontal position at all times according to the up-and-down angle of the boom 12, and the fork 23 is loaded on the load receiving surface 23A. Baggage can be transported from the ground to a high place in a stable state.
- the rod 27 C of the fork cylinder 27 has the tip end side lower than the lower surface 2 A of the vehicle body 2. Also protrude downward toward the ground. Therefore, in this state, when the vehicle body 2 moves backward and the lower surface 2 A of the vehicle body 2 passes over the obstacle A on the ground, the obstacle A is moved to the fork cylinder 27. There is a risk of crashing into the rod 27 C of
- each cylinder mounting bracket 26 of the cargo handling device 21 is provided with a protective projection 26D.
- the protection protrusion 26 D is located at the tip side of the projecting portion 26 B located below the through hole 24 B of the boom mounting plate 24, and is provided with a pin through hole 2 D. It is provided so as to protrude further toward the vehicle body 2 than 6C. For this reason, even when the lower surface 2A of the vehicle body 2 passes through the obstacle A on the ground when the vehicle body 2 moves backward, the protection projection 26D is more than the rod 27C of the fork cylinder 27. It collides with obstacle A first. This makes it possible to reliably prevent the obstacle A from directly colliding with the rod 27 C of the fork cylinder 27 by the protection projection 26 D. 7 C can be protected.
- the protection projection 26 D is provided on each of the cylinder mounting brackets 26 of the cargo handling tool 21, the impact when the obstacle A collides with the protection projection 26 D is used. 1 Can be received by the whole. Therefore, the impact when the obstacle A collides with the protection projection 26 D is directly applied to the fork cylinder 27, as compared with a structure in which the cover is attached to the cylinder rod as in the conventional technology, for example. This prevents the fork cylinder 27 from being damaged by this impact, so that the reliability of the fork cylinder 27 can be improved.
- the pair of protective projections 26D sandwich the distal end of the rod 27C from the left and right directions. Therefore, compared with the case of using a cylindrical force bar for covering the outer peripheral side of the rod as in the prior art, for example, sediment and the like accumulate between each protection projection 26D and the rod 27C. There is nothing to do The cylinder 27 can be operated smoothly over a long period of time.
- the obstacle A which may collide with the rod 27 C of the fork cylinder 27 is smaller than the height H from the ground to the lower surface 2 A of the vehicle body 2.
- the height h of the protective projection 26D from the ground is set to be smaller by Ah than the height H described above.
- each protection projection 26 D is provided with a pin through hole 24 B of a boom mounting plate 24 constituting a cargo handling device 21 and a boss portion 1 of a boom head 16.
- the fork cylinder 27 is formed as an arc-shaped projection that bends and extends in an arc shape toward the rod 27C side of the fork cylinder 27 around a pin 25 serving as a connecting means with 6D.
- each protection projection 26D may interfere with the tube 27A of the fork cylinder 27. There is no. Therefore, even when the protection projection 26 D is provided, the cargo handling device 21 can be smoothly rotated with respect to the boom head 16, and the load receiving surface portion of each fork 23 provided on the cargo handling device 21. 23 A can be kept in a horizontal position at all times according to the up-and-down angle of the boom 12.
- FIG. 7 shows a second embodiment of the present invention.
- the protective projection is formed by a member separate from the fork cylinder mounting member.
- the configuration is such that it is detachably attached to the holder attachment member. Note that, in this embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- reference numeral 31 denotes a cargo handling tool as a working tool used in this embodiment instead of the cargo handling tool 21 according to the first embodiment described above. It is mounted on the boom head 16) so that it can rotate up and down.
- the cargo handling device 31 has a frame 22, a fork 23, a boom mounting plate 24, a cylinder mounting bracket 32, which will be described later, and a protection device, in substantially the same manner as in the first embodiment. It is composed of plates 33 and the like.
- the cargo handling device 31 according to the second embodiment is different in that the shape of the cylinder mounting bracket 32 and the protection plate 33 are formed of a member different from the cylinder mounting bracket 32. This is different from the cargo handling equipment 21 according to the first embodiment.
- Reference numerals 32 and 32 denote cylinder mounting brackets as left and right cylinder mounting members provided between the left and right boom mounting plates 24 and provided on the rear side of the frame 22.
- Each of the cylinder mounting brackets 32 is used in this embodiment in place of each of the cylinder mounting brackets 26 according to the first embodiment.
- the cylinder mounting bracket 32 is formed in a substantially L-shape using, for example, a thick steel plate material.
- the vertical plate part 32 A whose side is fixed to the upper beam 22 B of the frame 22 and the lower end side is fixed to the lower beam 22 C, and the pin ⁇ through hole 24 B of the beam mounting plate 24 And a projecting portion 32B extending substantially horizontally from the lower end of the vertical plate portion 32A toward the vehicle body 2 side, and a silencing portion provided on the projecting portion 32B.
- a pin connection hole 32 C is provided as a solder connecting portion.
- the pin through hole 32C is located below the pin through hole 24B of the boom mounting plate 24 of the overhanging portion 32B and the pin through hole 2 4 B is provided closer to the vehicle body 2 than B, and the other end of the work implement cylinder 27 is rotatably connected to the pin through hole 32 C via a pin 29.
- a pin 29 has been.
- two female screw holes 32D and 32D are screwed on the tip side of the pin hole 32C to screw a port 34 described later. .
- Reference numerals 33, 33 denote protective plates as protective projections formed separately from the cylinder mounting bracket 32, and each of the protective plates 33 constitutes a cylinder mounting bracket 32 on the base end side.
- the distal end is formed in an arc shape that overlaps the distal end of the overhang portion 3 ′ 2B and extends obliquely upward from the overhang portion 32B toward the vehicle body 2.
- two port through holes 33A are formed at positions corresponding to the female screw holes 32D of the cylinder mounting bracket 32. .
- Each protective plate 33 is formed by screwing a port 34 passing through a port through hole 33A into a female screw hole 32D of a cylinder mounting bracket 32. It is fixed to the projecting part 32B of the soldering bracket 32.
- the lift truck according to the second embodiment has the cargo handling device 31 as described above, and its basic operation is not particularly different from that according to the above-described first embodiment.
- each protection plate 33 is formed of a separate member from the cylinder mounting bracket 32 of the cargo handling equipment 31, and the cylinder is formed using the port 34. It is configured so that it can be attached to and detached from the mounting bracket 32.
- FIGS. 8 to 11 show a third embodiment of the present invention.
- the feature of this embodiment is that a protection projection is provided on a cylinder mounting member constituting a work implement, and a boom is provided.
- An opening for accommodating the cylinder mounting portion provided on the distal end side of the inner boom is provided on the distal end side of the outer boom constituting the above.
- reference numeral 41 denotes a working device used in the present embodiment instead of the working device 11 according to the first embodiment.
- 1 includes a boom 42, a boom undulating cylinder 18, a first-stage boom cylinder 19, a second-stage boom cylinder 52, a cargo handling device 21, a fork cylinder 27, and the like, which will be described later. ing.
- Reference numeral 42 denotes a telescopic boom.
- the boom 42 is provided by a first-stage boom 43, a second-stage boom 49, a third-stage boom 57, a boom head 16 described later, and the like. It is configured.
- Reference numeral 43 denotes a first-stage boom as an outer boom.
- the first-stage boom 43 has a square tubular shape having a rectangular cross section extending in the front and rear directions, and accommodates a second-stage boom 49 and the like inside. It is composed of a rectangular cylinder 44 and a frame 45 fixed to the distal end of the rectangular cylinder 44.
- a vehicle body mounting portion 44A and a cylinder mounting portion 44B are protruded from the upper surface at the base end (rear end side) of the rectangular cylindrical body 44. I have.
- the vehicle body mounting portion 44 A is rotatably mounted on the vehicle body 2 via a pin 17, and the cylinder mounting portion 44 B is mounted on the second stage boom with respect to the first stage vehicle 43.
- the bottom side of the first stage cylinder 19 that expands and contracts 49 is installed.
- the frame body 45 has a rectangular frame-like flange plate 45 A fixed to the tip of the rectangular cylinder body 44 by welding or the like, and the flange plate 45 A.
- the lower plate 45B which is fixed to the lower surface plate 45B, and which is substantially flush with the lower surface of the rectangular cylinder 44, is fixed to the lower plate 45B and the flange plate 45A. It consists of left and right side plates 45 C and 45 C facing each other in the direction.
- the upper surface between the left and right side plates 45C is open upward and downward.
- the upper ends of the left and right side plates 45 C are notches cut diagonally downward from the flange plate 45 A toward the front.
- An opening 46 described later is formed between the cutouts 45D.
- Reference numeral 46 denotes an opening provided at the tip end of the first-stage boom 43.
- the opening 46 is provided in the left and right side plates 45C and 45C constituting the frame body 45.
- the upper surface is open between the notches 45D and 45D.
- the opening 46 opens upward at a position corresponding to the cylinder mounting portion 50A of the second-stage boom 49 described later.
- the opening 46 is formed in the cylinder mounting portion of the second-stage boom 49. 50 A to the base end side of the first stage boom 43 (frame body 45) from the front end position (square tubular body).
- Reference numeral 48 denotes a horizontal slide pad attached to each side plate 45 C of the frame body 45.
- the horizontal slide pad 48 is a left and right side surface of the second stage boom 49. Are in sliding contact.
- Reference numeral 49 denotes a second-stage boom as an inner boom accommodated in the first-stage boom 43 so as to be extendable and retractable.
- the second-stage boom 49 moves forward and backward as shown in FIG.
- a rectangular tubular body 50 having a rectangular tubular shape having a quadrangular cross section extending therein and accommodating the third-stage boom 57 and the like therein, and a frame body 51 fixed to the distal end side of the rectangular tubular body 50. It is composed of
- the cylinder mounting part is provided on the top surface of the tip of the rectangular cylinder 50.
- the cylinder mounting portion 50 A is protruded, and the cylinder mounting portion 50 A is for mounting the rod side of the first stage boom cylinder 19. You. Then, as shown in FIGS. 8 and 9, when the second-stage boom 49 is reduced into the first-stage boom 43, the cylinder mounting portion 50A is connected to the first-stage boom 43. It is configured to be stored in the opening 46 provided in the frame 45. Further, a cylinder mounting portion 50B protrudes from the base end side in the rectangular cylindrical body 50, and the cylinder mounting portion 50B has a third step relative to the second step boom 49. The bottom side of the second stage boom cylinder 52 that extends and contracts the boom 57 is installed.
- the frame body 51 includes a rectangular frame-shaped flange plate 51 A fixed to the tip of the rectangular cylinder body 50 by welding or the like, and the flange plate 51.
- the lower slide pad 53 is attached to the lower surface of the base end of the rectangular cylindrical body 50, and the upper slide pad 54 is mounted to the upper surface of the base end of the rectangular cylindrical body 50. .
- the lower slide pad 53 and the upper slide pad 54 are in sliding contact with the inner peripheral surface of the rectangular cylindrical body 44 constituting the first stage boom 43.
- a lower slide pad 55 is mounted on the lower surface plate 51B of the frame 51, and the lower slide pad 55 is attached to the third stage boom 5 housed in the second stage boom 49.
- the lower surface of 7 comes into sliding contact.
- a horizontal slide pad 56 is attached to each side plate 51C of the frame 51, and the horizontal slide pad 56 slides on the left and right sides of the third stage boom 57. Touching.
- the third-stage boom 57 is formed of a rectangular cylinder having a rectangular cross section extending in the forward and rearward directions, and has a second stage boom cylinder 52 inside the inside thereof.
- the cylinder mounting part 57 A to which the head side is mounted protrudes.
- a boom head 16 is fixedly provided at the tip of the third stage boom 57, and a cargo handling device 21 is rotatably attached to the tip of the boom head 16. Have been.
- a lower slide pad 58 is attached to the lower surface of the base end of the third stage boom 57
- an upper slide pad 59 is attached to the upper surface of the base end of the third stage boom 57.
- the lower slide pad 58 and the upper slide pad 59 are in sliding contact with the inner peripheral surface of the rectangular cylindrical body 50 constituting the second stage boom 49.
- the lift truck according to the third embodiment is provided with the working device 41 as described above, and is provided with a protective projection 26 D on the cylinder mounting bracket 26 of the cargo handling device 21.
- the protection projection 26D protects the rod 27C of the fork cylinder 27 from obstacles on the ground. This is a special difference from the working device 11 according to the first embodiment. There is no.
- the working device 41 includes a cylinder mounting portion provided on the distal end side of the second stage boom 49 of the frame body 45 constituting the distal end side of the first stage boom 43.
- An opening 46 whose upper surface is open is provided at a position corresponding to 50 A.
- the distance L between the distal end of the first stage boom 43 and the distal end of the second stage boom 49 can be reduced, and the second stage boom 49 can be minimized accordingly. Since the overall length of the boom 42 when it is reduced can be reduced, safety when the lift truck travels can be improved.
- the lower slide pad 47 slidingly contacting the lower surface of the second stage boom 49 is in contact with the lower surface plate 45 B of the frame 45 constituting the first stage boom 43. Is provided.
- the upper slide provided on the upper surface of the base end of the second-stage boom 49 is formed. A large gap S can be secured between the pad 54 and the lower slide pad 47.
- FIGS. 12 and 13 show a fourth embodiment of the present invention.
- This embodiment is characterized in that a work mounting member and a cylinder mounting member are provided on the back side of the working tool.
- An integrated mounting member is provided, and a protective projection is provided on the mounting member. Note that, in the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- reference numeral 61 denotes a cargo handling tool as a working tool used in this embodiment instead of the cargo handling tool 21 according to the first embodiment described above. It is mounted on the boom head 16) so that it can rotate up and down.
- the cargo handling device 61 is composed of a frame 62, a fork 63, a mounting plate 64, and the like, which will be described later.
- the 6 2 is a rectangular frame forming the base of the cargo handling equipment 6 1.
- the frame 62 is formed of left and right side plates 62 A, 62 A, an upper beam 62 B, and a lower beam 6. 2 C and intermediate beam 6 2 D It is more roughly configured.
- Reference numerals 63 and 63 denote left and right L-shaped forks provided on the front side of the frame 62, and the upper end of each fork 63 is fixed to the intermediate beam 62D of the frame 62.
- the lower end side is a load receiving surface part 6 3 A that projects forward from the lower beam 62 C.
- Each of the mounting plates 64 is an integrated boom mounting member and a cylinder mounting member. It combines both functions.
- each mounting plate 64 is formed in a substantially J-shape using, for example, a thick steel plate, and the upper end is fixed to the upper beam 62B and the lower end is fixed to the lower beam 62C. It has a vertical plate portion 64 A extending upward and downward, and a projecting portion 64 B extending substantially horizontally from the lower end of the vertical plate portion 64 A toward the vehicle body.
- a pin through hole 64C as a boom connecting portion is formed, and the pin through hole of the overhang portion 64B is formed.
- a pin hole 64D is formed as a cylinder connecting portion.
- a protection projection 64E which will be described later, is formed on the tip end side of the overhang portion 64B with respect to the pin hole 64D.
- the pin-through holes 64C and the pin-through holes 64D are arranged such that the centers of the holes are horizontally aligned. Therefore, the height from the ground to the center of the pin ⁇ through hole 64 C and the height from the ground to the pin ⁇ through hole 64 D And the height to the center of the hole are equal.
- the pin 25 is passed through the boss 16 D and the pin hole 64 C of each mounting plate 64.
- the cargo handling device 61 is attached to the front end side of the boom head 16 so as to be rotatable upward and downward. Further, by passing the pin 29 through the pin hole 64 D of each mounting plate 64 and the mounting boss 27 D of the fork cylinder 27, the fork cylinder 27 is locked.
- the door 27C is rotatably mounted on the cargo handling equipment 61 with the pin 29 as a center.
- each protection projection 6 4 E and 6 4 E are protection projections provided on the left and right mounting plates 6 4, respectively, and each protection projection 6 4 E is a pin 6 through-hole 6 4 B of the extension 6 4 B of the mounting plate 6 4. It is integrally formed on the tip side with respect to 4D.
- each protection projection 64 E is inclined upward toward the fork cylinder 27 with the tip side of the rod 27 C of the fork cylinder 27 sandwiched from the left and right directions. It protrudes toward the vehicle body while bending to protect the rod 27 C of the fork cylinder 27 from obstacles on the ground.
- the lift truck according to the fourth embodiment has the cargo handling device 61 as described above, and its basic operation is not particularly different from that according to the first embodiment described above.
- the left and right mounting plates 6 4 in which the boom mounting member and the cylinder mounting member are integrated are provided on the back side of the frame 62 constituting the cargo handling device 61. Since the boom mounting member and the cylinder mounting member, which are separate members, are provided on the rear side of the frame body 62, the configuration of the cargo handling device 61 is simplified. Can be.
- the protection projection 26 D provided on the cylinder mounting bracket 26 of the cargo handling device 21 is attached to the boom head 16 and the boom mounting plate 2 of the cargo handling device 21. 4 with An example is shown in which the projections are formed as arc-shaped projections that bend in an arc shape toward the fork cylinder 27 with the pin 25 connecting the centers as the center.
- the present invention is not limited to this.
- an oblique direction from the pin through hole 26 C of the cylinder mounting bracket 26 to the fork cylinder 27 is It may be formed as a protection protrusion 26 D ′ extending linearly upward.
- one fork cylinder 27 is provided between the cargo handling device 21 and the boom 12, and the rod 27 C of the fork cylinder 27 is The case where the protection is provided by a protection projection 26D provided on each cylinder mounting bracket 26 of the cargo handling device 21 is illustrated.
- the present invention is not limited to this.
- a plurality of fork cylinders are provided between the cargo handling equipment 21 and the boom 12, and the rods of the fork cylinders are respectively provided on the protection projections. Therefore, the protection may be provided. This is the same for the second embodiment.
- the bottom side of the tube 27 A of the fork cylinder 27 is attached to the bracket 16 E of the boom head 16, and the opening 27 C of the fork cylinder 27 is attached.
- (Mounting boss part 27D) is attached to the cylinder mounting bracket 26 of the cargo handling equipment 21 and the rod 27C is secured by the protection projection 26D provided on the cylinder mounting bracket 26.
- the case of protection is illustrated.
- the present invention is not limited to this.
- the rod 27 C of the fork cylinder 27 is attached to the bracket 16 E of the boom head 16, and the bottom side of the tube 27 A is used as the cargo implement 2. It may be configured to be mounted on the cylinder mounting bracket 26 of 1.
- the protection projection 26 D of the cylinder mounting bracket 26 The tube 27A can be protected, and the tube 27A can be prevented from being deformed or damaged by colliding with an obstacle.
- the boom 12 is a three-stage boom including a first-stage boom 13, a second-stage boom 14, and a third-stage boom 15.
- This is an example of a case in which the configuration is made up.
- the present invention is not limited to this, and may be configured as, for example, a one-stage boom, a two-stage boom, or a multi-stage boom having four or more stages.
- the lift truck including the cargo handling equipment 21 (31) for the cargo handling work is described as an example of the working implement.
- the present invention is not limited to this, and can be widely applied to other self-propelled work machines such as a wheel loader having a loader bucket as a work tool.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002374838A JP2004203553A (ja) | 2002-12-25 | 2002-12-25 | 自走式作業機械 |
KR1020057000468A KR100583025B1 (ko) | 2002-12-25 | 2003-12-18 | 자주식 작업 기계 |
US10/518,509 US7112032B2 (en) | 2002-12-25 | 2003-12-18 | Self-propelled working machine |
CNA2003801005731A CN1692069A (zh) | 2002-12-25 | 2003-12-18 | 自行式作业机械 |
EP03780901A EP1577256A4 (en) | 2002-12-25 | 2003-12-18 | AUTOPROPULSE WORKING MACHINE |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002374838A JP2004203553A (ja) | 2002-12-25 | 2002-12-25 | 自走式作業機械 |
JP2002-374838 | 2002-12-25 | ||
JP2003-011355 | 2003-01-20 | ||
JP2003011355A JP2004224458A (ja) | 2002-12-25 | 2003-01-20 | 自走式作業機械 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004058625A1 true WO2004058625A1 (ja) | 2004-07-15 |
Family
ID=32684237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/016269 WO2004058625A1 (ja) | 2002-12-25 | 2003-12-18 | 自走式作業機械 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7112032B2 (ja) |
EP (1) | EP1577256A4 (ja) |
JP (2) | JP2004203553A (ja) |
KR (1) | KR100583025B1 (ja) |
CN (1) | CN1692069A (ja) |
WO (1) | WO2004058625A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US8070213B2 (en) * | 2008-06-06 | 2011-12-06 | Caterpillar Inc. | Machine having trim piece assembly with reduced discordance and method |
IT1399521B1 (it) * | 2010-03-30 | 2013-04-19 | C M C S R L Societa Unipersonale | Attacco rapido di sicurezza per il fissaggio di un utensile ad una macchina operatrice |
KR101347865B1 (ko) * | 2013-04-02 | 2014-01-07 | 주식회사 진우에스엠씨 | 고소 리프팅 작업차 |
DE102013021607A1 (de) * | 2013-09-27 | 2015-04-02 | Liebherr-Components Biberach Gmbh | Selbstfahrende Arbeitsmaschine sowie Verfahren zum Abbremsen einer solchen Arbeitsmaschine |
CN103726518B (zh) * | 2014-01-10 | 2015-11-04 | 徐工集团工程机械股份有限公司道路机械分公司 | 一种多功能全地形步履式液压挖掘机 |
CN105805265B (zh) * | 2014-12-30 | 2019-09-17 | 中核武汉核电运行技术股份有限公司 | 一种多级精密传动伸缩机构 |
USD778022S1 (en) * | 2015-02-12 | 2017-01-31 | Haulotte Group | Aerial lift |
USD785273S1 (en) * | 2015-08-05 | 2017-04-25 | Haulotte Group | Aerial lift cover |
USD783924S1 (en) * | 2015-08-05 | 2017-04-11 | Haulotte Group | Aerial lift cover |
CA170432S (fr) * | 2016-04-06 | 2017-11-23 | Manitou Bf | Chariot élévateur |
CN106986285B (zh) * | 2017-04-30 | 2022-07-26 | 安徽好运机械有限公司 | 一种用于伸缩臂越野车的倾翻机构 |
KR101893134B1 (ko) * | 2017-05-23 | 2018-08-30 | 유오성 | 데릭실린더와 슬레이브실린더를 통한 붐의 단부에 장착되는 보조장치의 수평 자동레벨링 시스템 |
CN108751043B (zh) * | 2018-05-09 | 2020-04-28 | 王历鑫 | 装货机升降装置及装货机 |
US10662046B1 (en) * | 2018-12-21 | 2020-05-26 | Altec Industries, Inc. | Boom-mountable material handler |
KR102174518B1 (ko) * | 2019-11-29 | 2020-11-04 | 고재필 | 구난 소방용 고소작업차의 작업대 중량 감지 구조 |
KR102341613B1 (ko) * | 2020-07-23 | 2021-12-22 | 대호 (주) | 작업 차량의 텔레스코픽 마스터에 구비되는 포크리프터 구조 |
CN112177067A (zh) * | 2020-10-20 | 2021-01-05 | 广州基俊机械科技有限公司 | 一种用于道路抢修的救援机械手设备 |
EP4015440A1 (en) * | 2020-12-21 | 2022-06-22 | Manitou Italia S.r.l. | Attachment device for a telehandler |
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WO1989000972A1 (en) * | 1987-07-27 | 1989-02-09 | Merlo S.P.A. Industria Metalmeccanica | A lifting truck with a telescopic lifting arm |
JP2000128495A (ja) * | 1998-10-29 | 2000-05-09 | Tcm Corp | 扱物反転装置 |
JP2001082414A (ja) * | 1999-09-13 | 2001-03-27 | Susumu Nakazono | 油圧ショベルの油圧シリンダーロッドカバー |
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US4545720A (en) * | 1984-05-17 | 1985-10-08 | J. I. Case Company | Quick coupler assembly |
US4759452A (en) * | 1987-02-20 | 1988-07-26 | Faint Richard C | Articulated load bearing wear pad assembly |
IT1224381B (it) * | 1988-06-10 | 1990-10-04 | Manitou Costruz Ind Srl | Elevatore, in particolare per carichi palettizzati |
-
2002
- 2002-12-25 JP JP2002374838A patent/JP2004203553A/ja active Pending
-
2003
- 2003-01-20 JP JP2003011355A patent/JP2004224458A/ja not_active Withdrawn
- 2003-12-18 EP EP03780901A patent/EP1577256A4/en not_active Withdrawn
- 2003-12-18 WO PCT/JP2003/016269 patent/WO2004058625A1/ja not_active Application Discontinuation
- 2003-12-18 KR KR1020057000468A patent/KR100583025B1/ko not_active IP Right Cessation
- 2003-12-18 CN CNA2003801005731A patent/CN1692069A/zh active Pending
- 2003-12-18 US US10/518,509 patent/US7112032B2/en not_active Expired - Fee Related
Patent Citations (3)
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WO1989000972A1 (en) * | 1987-07-27 | 1989-02-09 | Merlo S.P.A. Industria Metalmeccanica | A lifting truck with a telescopic lifting arm |
JP2000128495A (ja) * | 1998-10-29 | 2000-05-09 | Tcm Corp | 扱物反転装置 |
JP2001082414A (ja) * | 1999-09-13 | 2001-03-27 | Susumu Nakazono | 油圧ショベルの油圧シリンダーロッドカバー |
Non-Patent Citations (1)
Title |
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See also references of EP1577256A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004224458A (ja) | 2004-08-12 |
EP1577256A4 (en) | 2007-01-17 |
JP2004203553A (ja) | 2004-07-22 |
KR100583025B1 (ko) | 2006-05-23 |
CN1692069A (zh) | 2005-11-02 |
US20050254931A1 (en) | 2005-11-17 |
US7112032B2 (en) | 2006-09-26 |
EP1577256A1 (en) | 2005-09-21 |
KR20050018980A (ko) | 2005-02-28 |
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