WO1995023111A1 - Procede et dispositif de deploiement et de rangement automatique du bras articule d'une fleche de grue telescopique - Google Patents
Procede et dispositif de deploiement et de rangement automatique du bras articule d'une fleche de grue telescopique Download PDFInfo
- Publication number
- WO1995023111A1 WO1995023111A1 PCT/JP1995/000252 JP9500252W WO9523111A1 WO 1995023111 A1 WO1995023111 A1 WO 1995023111A1 JP 9500252 W JP9500252 W JP 9500252W WO 9523111 A1 WO9523111 A1 WO 9523111A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boom
- jib
- catch
- rotating
- crane
- Prior art date
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Classifications
-
- 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
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- 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
- B66C23/84—Slewing gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
Definitions
- the present invention relates to a method for extending and storing a jib of a boom device in a vehicle-mounted crane, a storage method, and a storage device.
- the conventional vehicle-mounted crane (rough terrain lane) has an upper revolving superstructure 2 equipped with a driver's cab 3 on the body 1 of the vehicle.
- the upper revolving superstructure 2 has a boom 4 that can be extended and retracted in multiple stages, and is mounted so as to be able to move up and down.
- the auxiliary jib 6 attached to the tip of the top boom 5 of the boom 4 is stored in parallel on the side surface of the boom 4.
- the catch jib 6 is extended to the tip of the top boom 5 and the boom 4 is arbitrarily expanded and contracted to perform the work.
- Japanese Patent Publication No. 4-66640 is known for the method of extending and storing the above-mentioned auxiliary jib.
- the procedure for extending the stored catch jib is as follows: First, pull out the storage pin, then swing out the auxiliary jib, insert the fulcrum pin, and then extend the extension set bin. And the boom is set to the specified angle of elevation, the auxiliary jib is tilted to a position almost parallel to the axis of the fulcrum pin, the auxiliary jib is rotated by the auxiliary winding inch, and the connecting pin is inserted. The overhanging work is finished.
- the present invention has been made in order to solve the problems of the prior art, and has a small number of preparations, a small number of manual operations, and can easily, reliably, safely, and quickly extend the catch jib.
- the purpose of the present invention is to provide a method and a device for automatically extending and storing a crane catch jib that can be stored.
- the first invention of the method for automatically extending and storing the auxiliary jib for the crane according to the present invention is as follows.
- the catch jib is swung to a predetermined position by a force between the boom and the auxiliary jib.
- the side of the boom near the tip of the boom at the time of juxtaposition is engaged with the catch jib, and then the rotating bracket is extended to the front of the boom by the swiveling force on the boom, and the boom at the time of juxtaposition
- the distal end side and the catch jib are engaged with each other.
- the second invention of the method for automatically extending and storing the catch jib for the crane is to separate the catch jib from the far side of the boom tip at the time of juxtaposition when the catch jib is retracted, and then stretch the catch boom forward.
- the protruding rotary bracket is rotated by the swiveling force on the boom, and after turning to a predetermined position, the side of the boom near the tip of the boom at the time of juxtaposition is separated from the catching jib.
- the auxiliary jib is laterally swung by the force between the two and stored in a predetermined position.
- the third invention of the method for automatically extending and retracting the auxiliary jib for the crane is that when the auxiliary jib is extended, the auxiliary jib is raised by a predetermined amount, and then the auxiliary jib is moved to a predetermined position by a force between the boom and the catch jib. To the side of the boom near the tip of the boom at the time of side-by-side engagement with the catch jib, then tilt the auxiliary jib downward, and furthermore, the swiveling force on the boom Thus, the rotating bracket is extended forward of the boom to engage the auxiliary jib with the far side of the boom tip in the side-by-side arrangement.
- the fourth invention of the method for automatically extending and storing the crane auxiliary jib is provided when the catch jib is stored. Then, after raising the boom by a predetermined amount, the auxiliary jib is tilted downward, then the remote side of the distal end of the boom at the time of juxtaposition is separated from the auxiliary jib, and after the separation, it protrudes forward of the boom.
- the rotating bracket is rotated by the swiveling force with respect to the boom, and after rotating to a predetermined position, the auxiliary jib is returned to the position parallel to the boom. After detaching, the auxiliary jib is laterally swung by the force between the boom and the catching jib after the detachment, and is stored in a predetermined position.
- the fifth invention of the method for automatically extending and storing the crane auxiliary jib is as follows. (1) When the catching jib is extended, (1) the detection means detects that the top boom of the boom is at a predetermined shortened position. Swivel the jib in the horizontal direction to create a groove on one side in the left and right direction at the rear end of the rotating bracket attached to the base end of the catch jib, and one side in the left and right direction at the tip of the top boom (2) After the detecting means detects that the groove of the rotating bracket and the top boom pin are engaged, the rotating bracket and the top boom pin are connected to each other.
- the top boom is extended, and (4) the top boom reaches a predetermined length. Expanded (5) After the detecting means detects that the rotating bracket has rotated to a predetermined position, the rotating bracket is protruded. And the other side in the left and right direction of the rear end of the rotating bracket portion is locked by a pin.
- the sixth invention of the method of automatically extending and storing the crane auxiliary jib is as follows. (1) When the catching jib is stored, (1) after the detecting means detects that the top boom of the boom has reached a predetermined length, (2) Release the hook of the 2nd hook device that hooks the other side in the left and right direction of the top end of the top boom and the other side in the left and right direction of the rear end of the rotating bracket with a pin. After the detecting means detects that the unlocking of the second lock device is completed, the rotating bracket is stored, and (3) the rotating bracket is detected to have rotated to a predetermined position. (4) After the detecting means detects that the top boom has been shortened to a predetermined position, the top boom is shortened.
- the lock of the first locking device that engages the top boom pin fixed to one side in the left and right direction at the tip of the top boom and engages with the one side groove in the left and right direction at the rear end of the rotating bracket. And (5) starting the storage of the catch jib after the detection means detects that the unlocking of the first locking device has been completed.
- a method of automatically extending and storing the crane catching jib according to the first to sixth aspects of the present invention will be described.
- the first locking device is operated by mouth.
- the rotating bracket portion protrudes and rotates, and then the second locking device performs the opening operation.
- the second locking device is unlocked, and then the rotating bracket portion is stored and rotated.
- the first locking device is unlocked, and the catching jib is retracted. Many of these operations are performed automatically.
- a first aspect of the present invention for an automatic extension and storage device of the crane catching jib is to detach or connect the lateral holding device for swinging the catching jib in the lateral direction, and the auxiliary jib and the top boom of the boom.
- the first locking device includes a first locking device that locks the groove by engaging a groove provided on one side in the left-right direction of the rotating bracket portion with a top boom pin fixed to one side in the left-right direction of the top boom.
- the second locking device may be a second locking device that locks the other side in the left-right direction of the rotating bracket portion and the other side in the left-right direction of the top boom with a pin.
- the lateral holding device includes a lever having a groove engaged with a pin fixed to one position of the catch jib and swingably mounted at one position of the boom, and a lateral connecting the boom and the lever.
- the rotating bracket portion includes a groove on a left and right side of a rear end side, which is engaged with a top boom pin vertically fixed to one of the left and right sides of a top end of the top boom.
- On the other side there is a pin hole that connects to the other side on the left and right sides of the top boom tip with vertical connecting pins, on the front end side, there is a pin hole for mounting the auxiliary jib on the up and down,
- a rotating cylinder mounting pin for rotating the rotating bracket with respect to the boom may be provided.
- the first hook device is mounted on the rotary bracket so as to be swingable, and has a lock link for holding the top boom pin together with the groove of the rotary bracket, and a lock link mounted on the rotary bracket.
- the rotation device includes a first lever having one end rotatably mounted on a pin fixed to an upper surface of a rear end of the rotation bracket, and one end rotatably mounted on the other end of the first lever.
- a second lever having a groove at the other end for engaging a rotation support pin fixed to the top boom, and a rotation cylinder connecting the first lever to the rotation bracket portion.
- the second lock device includes two upper and lower connecting pins for connecting the top boom and the rotary bracket portion, a lever having a central portion pivotally mounted on the rotary bracket portion, a lever, and a rotary bracket portion. And a second lock cylinder connecting the two ends of the lever and the two connection pins, respectively.
- Detecting means for detecting the position of the boom and the top boom; detecting means for detecting the position of the horizontal holding device; detecting means for detecting the detachment or connection of the rotating bracket; a first locking device and a second locking device; And a rotation position detecting means for detecting a rotation position of the rotating device.
- a display means for displaying a detection result of each of the detection means may be provided in a cab provided in a vehicle.
- the position of the center of gravity of the catching jib is approximately the center of the rotation axis of the rotating bracket when the boom is raised to a predetermined angle, the catching jib is tilted to a predetermined position, and the rotating bracket is rotated.
- the extension and storage device for the crane auxiliary jib includes a rotating bracket portion, a horizontal holding device that is operated by a hydraulic device to swing the auxiliary jib in a lateral direction, a top boom, and a rotating bracket.
- first and second locking devices for locking the bracket unit and a rotating device for the rotating bracket unit.
- a detection means for example, a limit switch
- a display means for indicating the operation detection result provided in the cab are provided.
- the auxiliary jib when the auxiliary jib is tilted by erecting the boom at a predetermined angle, the center of gravity of the catching jib is almost aligned with a vertical line passing through the center of the rotating shaft of the rotating bracket.
- the rotating torque of the rotating bracket is small.
- the boom since the boom can be automatically extended while standing at a predetermined angle, it can be easily and safely extended on narrow roads.
- the second invention of the crane jib automatic extension and storage device includes a tilt lever for raising and lowering the jib, a direction switching valve operated by the tilt lever, a tilt operation circuit, and a lateral holding operation.
- a first solenoid-operated switching valve for switching between circuits, a solenoid operated valve for a horizontal holding cylinder, a circuit including a first locking cylinder, a second locking cylinder, and a rotating cylinder;
- a second solenoid-operated directional control valve that switches between the tilt operation circuit, a first lock cylinder solenoid-operated valve, a second lock cylinder solenoid-operated valve, and a rotary cylinder solenoid-operated valve It is characterized by having.
- One of the circuits connecting the directional control valve and the solenoid operated valve for the side-holding cylinder includes one circuit of the circuit connecting the directional control valve and the solenoid operated valve for the second lock cylinder. May be provided with a one-way valve.
- the solenoid operated valve for the first lock cylinder, the solenoid operated valve for the rotary cylinder, the solenoid operated valve for the second lock cylinder, and the second solenoid operated directional control valve can be mounted on the rotary bracket. Good.
- the first lock cylinder solenoid operated valve, the rotary cylinder solenoid operated valve, the second lock cylinder solenoid operated valve, and the second solenoid operated switching valve may be connected by a series circuit.
- the disconnection between the hydraulic circuit for tilt and the hydraulic circuit for overhang storage operation is performed.
- An electromagnetic switching valve for performing the switching is provided.
- the hydraulic circuit for the extension and storage operation is connected to the solenoid operated valve for each hydraulic cylinder, and the auxiliary jib is extended and stored by switching sequentially.
- the operator operates the switching switch and the tilt lever in the operator's cab, so that the operation of extending and retracting is automatically performed.
- the tilt lever can be operated in one direction to extend and retract, increasing operational safety.
- the solenoid valves of the rotating device the first and second locking devices are mounted on the rotating bracket at the tip of the boom and the rotating bracket, the hydraulic hose has only two reels. Hydraulic piping in the rotating bracket is reduced.
- FIG. 1 is a plan view of a crane vehicle equipped with a catching jib overhang and storage device according to an embodiment of the present invention
- FIG. 2 is a plan view showing a disengaged state between the horizontal holding device of the embodiment and the catch jib,
- FIG. 3 is a plan view showing a state where the auxiliary jib is swung out of the horizontal holding device of the embodiment
- FIG. 4 is a plan view showing the storage state of the catching jib of the horizontal holding device of the embodiment
- FIG. 5 is a plan view of a rotating bracket portion showing a completed state of the catching jib overhang rotation of the rotating device of the embodiment
- FIG. 6 is a side view seen from the arrow A in FIG. 5, and is a side view showing a state in which the first locking device is fully opened.
- FIG. 7 is a view of the other side as viewed from the arrow B in FIG. 5, and is a side view showing a state in which the second locking device is fully closed.
- FIG. 8 is a perspective view showing the configuration of the rotating bracket section of the embodiment.
- FIG. 9 is a perspective view showing the configuration of the rotating device of the embodiment.
- FIG. 10 is a perspective view showing the configuration of the first mouthpiece device of the embodiment.
- FIG. 11 is a plan view showing a completed state of releasing the first mouthpiece device of the embodiment
- FIG. 12 is a plan view showing a completed state of the first mouthpiece device of the embodiment
- FIG. 13 is a plan view showing the completed rotation state of the rotating device of the embodiment.
- FIGS. 14A and 14B are diagrams showing the completed storage state of the catch jib of the rotating device of the embodiment. Is a top plan view of the top boom side
- FIG. 14B is a top plan view of the rotating bracket side.
- Fig. 15 is a side view of the second hooking device of the embodiment showing the state where the hook release is completed
- Fig. 16 is the hydraulic circuit diagram of the automatic extension of the jib of the embodiment, the storage device
- Figure 17 is an electrical diagram of the auxiliary jib overhang and storage device of the embodiment.
- FIG. 18 is a perspective view showing an example of mounting the limit switch of the embodiment.
- FIG. 19 is an exploded configuration diagram showing an example of another portion of the limit switch mounting of the embodiment.
- FIG. 20 is a flow chart of the method of extending the auxiliary jib of the embodiment.
- Fig. 21 is a flowchart of the method of storing the jib of the embodiment.
- FIG. 22 is an explanatory view of the case where the boom is raised and the catch jib is tilted during the rotation work of the rotating bracket portion according to the embodiment,
- Figure 23 is a side view of the running posture of the vehicle-mounted crane according to the prior art.
- Fig. 24 is a plan view of the running posture of a vehicle-mounted cleaner according to the prior art.
- Fig. 25 is a side view showing the working posture of the vehicle-mounted crane according to the prior art.
- FIG. 1 shows a vehicle-mounted cleaner using the automatic extension and storage device 10 according to the present embodiment.
- the upper revolving superstructure 2 having the operator's cab 3 is rotatably mounted on the vehicle body 1 and has a telescopic multistage boom 4 mounted thereon so as to be able to move up and down.
- This figure shows the running state. In the running posture viewed from the side, the boom 4 is almost horizontal or slightly inclined forward.
- the automatic extension and storage device 10 is actuated by a rotating bracket 30 for detaching or connecting the catch jib 6 and the top boom 5 and a hydraulic device (not shown) to swing the catch jib laterally.
- Holding device 20, top boom 5 and rotating bra It comprises a first locking device 40 and a second locking device 60 for locking the bracket 30 and a rotating device 50 for rotating the rotating bracket 30 with respect to the boom. I have.
- the auxiliary jib 6 attached to the tip of the top boom 5 of the boom 4 via the rotating bracket 30 is stored side by side with the boom 4 in the running state and fixed to the boom 4 by the storage pin 7. Have been. At the time of storage, it is supported by the horizontal holding device 20 and held by the bracket 4 a fixed to the boom 4.
- the bracket 4a is preferably provided with rollers, bearings, and the like (not shown) for reducing sliding resistance so that overhang can be easily performed.
- the auxiliary jib 6 is swung in the horizontal direction (W direction in the drawing) by the horizontal holding device 20 as shown by the two-dot chain line. In other words, it starts to shake.
- FIG. 2 the catching jib 6 is swung out as shown by the two-dot chain line in FIG. 1, the top boom 5 is extended by a predetermined length, and an engagement portion between the boom 4 and the supplementary jib 6, which will be described later, is released.
- the case where the catch jib 6 is made rotatable together with the bracket portion 30 is shown.
- the swinging is performed by contraction of a hydraulic cylinder 25 of the horizontal holding device 20 which will be described later.
- a bracket 14 having a groove 15 is fixed to one position (the “upper side” in the figure) of the boom 4, and the bottom side of the hydraulic horizontal holding cylinder 25 is mounted on the bracket 14. I have.
- the bracket 14 has a lever 2 having a groove 23 at one end for engaging a locking pin 21 fixed to one position of the catch jib 6, and the center 2 can be swung by the pin 24. It is attached to.
- the other end 22 a of the lever 22 is attached to the rod side of the horizontal holding cylinder 25, and connects the lever 22 and the boom 4 with the horizontal holding cylinder 25.
- a bracket 16 having a groove 17 is fixed to another position (the “lower side” in the figure) of the boom 4.
- a hook 27 engaging with the locking pin 26 is mounted on the bracket 16 so as to be swingable by the pin 16a.
- the other end 22 a of the lever 2 and the hook 27 are connected by a rod 28.
- the auxiliary jib 6 has grooves 31 a and 3 lb, which will be described later, of the rotating bracket 30 and the first lock device.
- -1 o-It is engaged with and held by the top boom pin 11 of position 40 (see Fig. 5).
- FIGS. 5 to 7 show a state in which the auxiliary jib 6 is projected forward of the top boom 5.
- a top boom pin 11 and a rotation support pin 12 are fixed to one side in the left-right direction of the tip of the top boom 5, that is, to the far side of the boom tip when the catching jib and the boom are juxtaposed.
- pin holes 13a and 13b are formed vertically on the other side, that is, on the side surface near the boom tip when the auxiliary jib and the boom are juxtaposed.
- the rotating bracket part 30 has a first locking device 40 (FIG. 6) on one side surface (the side surface near the boom tip when the auxiliary jib and the boom are juxtaposed), and a rotating device 5 on the upper surface. 0 (Fig. 5), and a second locking device 60 (Fig. 7) is mounted on the other side (the far side of the boom tip when the auxiliary jib and boom are installed side by side).
- FIGS. 8 to 10 are perspective views of the rotating bracket unit 30, the rotating device 50, and the first mouth device 40, respectively. The details of each device will be described below.
- the rotating bracket portion 30 has grooves 31a and 31b on one side in the left and right direction on the rear end side for engaging with the top boom pin 11 (see Fig.
- the bracket part 3.0 has a supplementary jib 6 mounted on the tip side so as to be able to undulate by pins 30a, and a bracket 30b is provided at the lower part.
- a tilt cylinder 8 for operating the auxiliary jib 6 so as to be able to move up and down is mounted on the pin 30 c mounted on the bracket 30 b.
- a pin 34 for mounting a rotating cylinder 55 (FIG. 9) is provided on an upper portion (FIG. 8) of the rotating bracket portion 30. The rotating cylinder 55 causes the rotating bracket portion 30 to rotate with respect to the boom 4 about the top boom pin 11 (see FIG. 6).
- the first lock device 40 will be described with reference to FIGS. 6, 10, and 12, focusing on FIG.
- the bracket 32 fixed to one side surface of the rotating bracket portion 30 at the rear end side has a lock link 41 having a concave portion 42 engaging with the top boom pin 11, and a pin 4 3. It is pivoted around the center. 1st lock cylinder
- Reference numeral 44 denotes a mouth portion connected to the mouth link 41, and a bottom portion connected to the rotary bracket portion 30.
- the lock link 41 is connected to the rotating bracket section 30 by a first lock cylinder 44.
- the rotating device 50 is attached to a pin 33 fixed near one side of the rear end of the rotating bracket portion 30.
- One end 51a of the first lever 51 is rotatably mounted on the shaft.
- the other end 5 1 b of the first lever 51 is connected to the second lever
- One end 5 2 a of 52 is rotatably mounted on the shaft.
- the other end of the second lever 52 is provided with a groove 53 for engaging with the rotation support pin 12 fixed to the top beam 5.
- the first lever 51 and the second lever 52 are connected by a spring 54.
- the top boom 5 is provided with a retaining plate 5j so that the groove 53 of the second lever 52 does not come off from the pin 12 except at a predetermined position during turning.
- Pin 3 fixed to rotating bracket 30 4 and the center of the first lever 51 are connected by a rotating cylinder 55. By expanding and contracting the rotary cylinder 55, the rotary bracket 30 rotates around the top boom pin 11.
- FIG. 5 shows a state in which the rotating cylinder 55 has been extended to complete the overhang rotation
- FIG. 13 shows a state in which the rotating cylinder 55 has been shortened and the retracting rotation has been completed.
- the second locking device 60 has the pin holes 32 a and 32 b of the rotating bracket portion 30 and the pin holes 13 a and 13 b of the top boom 5. Are connected (locked) by connecting pins 61a and 61b.
- the rotating bracket part 30 has a lever 62 force ⁇ , and is rotatably mounted on a center pin 62a.
- the lever 62 has one end 62b with the connecting pin 61a via the link 63a, and the other end 62c with the connecting pin 61b via the link 63b, respectively. Connected.
- the end 62 d of the other end of the lever 62 and the rotating bracket 30 are connected by a second lock cylinder 64.
- the lever 62 rotates around the center pin 62a to be in a locked state, while shortening.
- the connecting pins 61 a and 61 b are released from the pin holes 13 a and 13 b of the top boom 5, and the lock is released.
- a lock pin 65 is provided near the other end of the lever 62, and as shown in FIG. 7, the lock pin 65 is inserted to stop the rotation of the lever 62, and the connection pin is connected.
- reference numeral 70 denotes a tilt lever provided in the cultivation room 3
- 71 denotes a directional control valve operated by a tilt lever by the tilt lever 70
- 72 denotes a hydraulic switch.
- the pump, 73 and 74 are reels
- 8 is a tilt cylinder of the undulation of the jib 6.
- the first solenoid switching valve 77, the reel 74, and the second solenoid switching valve are sequentially arranged on one of the tilt operation circuits 75.
- a counter balance valve 86 are provided on the other tilt operation circuit 76.
- a reel 73 and a pilot operation check valve 87 are sequentially arranged.
- the first electromagnetic switching valve 77 switches the pressure oil from the hydraulic pump 72 to a tilt operation circuit or a horizontal holding operation circuit. This pressure oil flows to the next reel 74 in the tilt operation circuit, and to the horizontal cylinder 25 via the electromagnetic operation valve 78 that switches the expansion and contraction of the horizontal cylinder 25 in the horizontal operation circuit. Flows.
- the solenoid operated valve 78 and the other tilt operation circuit 76 are connected by a return circuit 80, and a one-way valve 81 is interposed in the circuit 80. As a result, the return oil from the horizontal holding cylinder 25 returns to the evening ink 88 via the return circuit 80 and the other tilt operation circuit 76.
- the second solenoid-operated directional control valve 82 supplies the hydraulic oil from the hydraulic pump 72 to the tilt operation circuit, or the first lock device 40, the rotation device 50, and the second lock device 60. Switch to the circuit of. In the tilt operation circuit, the hydraulic oil flows to the next counterbalance valve 86, and in the other circuits, the electromagnetic operation valve 85 for the first lock cylinder 44 of the first lock device 40 is sequentially operated.
- the solenoid operation valve 84 for the rotary cylinder 55 of the rotation device 50 and the solenoid operation valve 83 for the second lock cylinder 64 of the second opening device 60 are serially turned. Flow on the road. Further, the solenoid operated valve 83 and the other tilt operation circuit 76 are connected by a circuit 89, and the circuit 89 is provided with a one-way valve 81a.
- the first and second solenoid switching valves 77, 82 are interposed on the tilt operation circuit 75, and a one-way valve is provided on the connection circuit 80 between the tilt operation circuit 76 and the electromagnetic operation valve 78.
- the tilt lever 70 is operated and the directional control valve 71 is switched because of the interposition of 8 1
- the tilt cylinder 8 expands and contracts, and the auxiliary jib 6 is raised and lowered.
- Fig. 17 is an electrical system diagram.
- the operator's cab 3 is provided with a switching switch 90 for switching between overhanging and storage.
- Position 90a is the position during overhanging work, and position 90b. Is the position at the time of the storing operation.
- Reference numerals 9a and 9b denote limit switches for detecting the position of the top boom 5 with respect to the boom 4 during the overhanging operation, for detecting the telescopic position of the top boom 5.
- 91 a detects that the top boom 5 shown in FIG. 2 has been extended by a predetermined amount
- 91 b detects that the top boom 5 shown in FIG. 3 has been reduced by a predetermined amount.
- 9a and 9b are limiters for detecting the extension position of the top boom 5 to detect the amount of the pins 21 and 26 pulled out at the position of the top boom 5 with respect to the boom 4 during the storing operation. It is a switch.
- 9 2a indicates that the top boom 5 shown in FIG.
- the detection 92b detects that the top boom 5 shown in FIG. 3 has been reduced by a predetermined amount.
- 93 a and 93 b are limit switches for detecting the swing-out position of the auxiliary jib 6 by the horizontal holding device 20.
- 9 3a detects the swing-out completed state shown in Fig. 4, that is, the release of the engagement between the top boom pin 11 and the grooves 31a and 31b shown in Figs. 14A and 14B. I do.
- 93b detects the storage completed state shown in FIG. 3, that is, the engagement of the top boom pin 11 shown in FIG. 13 with the grooves 31a and 31b.
- 94a and 94b are limit switches for detecting the lock and unlock position of the second lock device 60, and 94a has been fully closed as shown in Fig. 7.
- 94b detects that the release of the mouth is completed as shown in FIGS. 14A and 14B.
- Reference numerals 95a and 95b denote limit switches for detecting the rotating position of the rotating device 50 and the rotation of the rotating device 50.
- 95a detects that the overhang rotation shown in Fig. 5 has been completed
- 95b detects that the retracted rotation shown in Fig. 13 has been completed.
- Reference numerals 96a and 96b denote limit switches for detecting the lock of the first opening device 40 and the unlock position.
- 96a detects that the lock shown in FIG. 12 has been completed
- 96b detects that the unlocking shown in FIG. 11 has been completed.
- the pilot lamp 97a, 97 b, 97 c and 97 d are pilot lamps provided as a detection result display means provided in the cab 3.
- the pilot lamp 97a is lit when the top boom 5 has been shortened, the horizontal holding device 20 has completed swinging out, and the first hook device 40 has finished sucking when the auxiliary jib is overhanging.
- the pilot lamp 97 b lights up when the auxiliary boom is extended, the top boom 5 has been extended, the rotating bracket 30 has extended, and the rotation has been completed, and the second locking device 60 has been locked. .
- the pilot lamp 97c When the auxiliary jib is stored, the pilot lamp 97c is lit when the top boom 5 is completely extended, the second locking device 60 is completely unlocked, and the rotating bracket is completely stored and rotated. At the time of storing the auxiliary jib, the pilot lamp 97 d shortens the top boom 5, completes the unlocking of the first lock device 40, and completes the storage of the horizontal holding device 20. Lights up. 9 8 is a diode.
- FIG. 18 and FIG. 19 show an example of the installation of the above-mentioned limit switch, in which the position of the top boom 5 with respect to the boom 4 is detected, and the extension and storage of the auxiliary jib 6 are detected. .
- Other limit switches are similarly located near the relevant control members.
- the limit switches 91 a and 92 a for detecting the extension position of the top boom 5 are attached to the boom 4 to detect the position of the bracket 5 m of the top boom 5. Detects that top boom 5 has extended to the specified position.
- the limit switches 91a and 92a may be mounted on the top boom 5 and the bracket 5m may be mounted on the boom 4.
- the limit switches 91b and 92b for detecting the reduced position of the top boom 5 are mounted on a bracket 16 (shown in FIG. 2) fixed to the boom 4. The position of the lock pin 26 is detected. Also, a limit switch 93b for detecting the end of the storage of the auxiliary jib 6 and a switch for detecting the start of the auxiliary jib 6 for detecting the end of the movement of the auxiliary jib 6 from the horizontal holding to the overhang.
- the mit switch 93 a is attached to a bracket 14 fixed to the boom 4 and detects the moving position of the mouth 8. In this case, the movement position of the horizontal holding cylinder 25 may be detected.
- the limit switch is used for position detection. However, a cylinder with position detection, such as a sensor having a position detection sensor in the cylinder rod, may be used.
- the double-enclosed portion is a portion that operates automatically.
- step 101 the operator removes the storage pin 7 (shown in Fig. 1).
- step 102 the operator switches the changeover switch 90 (shown in FIG. 17) to the overhang position 90a.
- step 103 the operator operates the tilt lever 70 (shown in Fig. 16) to switch the directional control valve 71 to the position 71a.
- step 104 the limit switch 91b detects that the top boom 5 is at the shortened position.
- the first solenoid-operated switching valve 77 switches to the position 77 b
- the solenoid-operated valve 78 switches to the position 78 a
- the horizontal holding cylinder 25 of the horizontal holding device 10 operates. Swing out the catch jib 6 (W direction in Fig. 1).
- the top boom pin 11 engages with the grooves 31 a and 31 b of the rotating bracket 30, and the rotation supporting pin 12 of the top boom 5 and the second lever 5 of the rotating device 50 are engaged.
- the two grooves 53 engage.
- step 105 the limit switch 93a detects that the catch jib 6 has been swung out, sets the first solenoid-operated directional control valve 77 to the position 77a, Return the valve 78 to the position 78 b and stop the horizontal holding cylinder 25. Also, by switching the second solenoid-operated switching valve 82 to the position 82b and the solenoid-operated valve 85 to the position 85a, the first lock cylinder 44 of the first locking device 40 is switched. To lock the top boom pin 11.
- step 106 the limit switch 96a detects that the first locking device 40 has been locked, and returns the solenoid operated valve 85 to the position 85b. First, turn on the pie mouth lamp 97a.
- step 107 the operator confirms that the pilot lamp 97a is lit, and switches the boom valve (not shown) until the lock pin 21 comes out of the groove 23 of the lever 22. Extend the top boom 5 by the specified amount. At this time, the pilot lamp 97a goes off once, and turns on again when it reaches the predetermined position.
- step 108 the limit switch 91a detects that the top boom 5 has been extended, switches the solenoid operated valve 84 to the position 84a, and rotates the rotating device 50.
- the rotating cylinder 55 is operated, and the rotating bracket section 30 is extended and rotated.
- step 109 the limit switch 95a detects that the rotating bracket portion 30 has extended and completed rotation, and switches the solenoid operated valve 83 to switch the second locking device. Activate the second lock cylinder 64 of 60, insert the connecting pins 61a and 6lb into the pin holes 13a and 13b, respectively, and connect the top boom 5 and the rotating bracket 30. Lock. .
- step 110 the limit switch # 94a detects that the second lock device 60 has been completely closed, and turns on the pilot lamp 97b.
- step 1 the operator confirms that the pilot lamp 97 b is lit, returns the tilt lever 70, and locks the lock pin 65 of the second locking device 60 (see FIG. (Shown in 7).
- the limit switch 91b detects that the top boom 5 is at the shortened position, and swings the supplementary jib 6 by extending the horizontal holding cylinder 25 so that the top boom pin 11 and The grooves 31a and 31b of the rotating bracket 30 are engaged with each other, but the present invention is not limited to this.
- the catch jib 6 is swung by the overhanging cylinder 25.
- the top boom 5 may be extended again by a predetermined amount to a position where the locking pin 21 comes out of the groove 23 of the lever 22 again.
- the engagement position becomes accurate and the engagement is ensured.
- the top boom 5 is extended by a predetermined amount from the groove 23 of the lever 22 to the position where the locking pin 21 comes out, but the top boom 5 is stopped at that position.
- the catch may be released by sliding or swinging the lever 1 2 2 side.
- the horizontal holding cylinder 25 between the boom 4 and the catching jib 6 The auxiliary jib 6 is swung laterally to a predetermined position to protrude, and after this protruding, when the auxiliary jib 6 and the boom 4 are juxtaposed, the side surface near the distal end of the boom 4 and the catch jib 6 Engage with locking device 40.
- the rotating bracket portion 30 projects to the front of the boom 4 by the turning force of the rotating cylinder 55 of the rotating device 50 with respect to the boom 4.
- step 201 the operator removes the lock pin 65 of the second locking device 60.
- step 202 the operator switches the switching switch 90 (shown in FIG. 17) to the storage position 90b.
- step 203 the operator operates the tilt lever 70 (shown in Fig. 16) in the same direction as the extension to switch the directional control valve 71 to the position 71a.
- step 204 the limit switch 92a confirms that the top boom 5 is in the extended position, and moves the second electromagnetic switching valve 82 and the solenoid operated valve 83 to the position 82b. Then, the position is switched to the position 83c, and the second lock cylinder 64 of the second lock device 60 is operated to contract. As a result, the connecting pins 61a, 61b of the top boom 5 and the rotating bracket 30 are pulled out from the pin holes 13a, 13b, and the lock is released.
- step 205 the limit switch 92b detects that the second locking device 60 has been released, and switches the solenoid operated valve 84 to the position 84c.
- the rotating cylinder 55 of the rotating device 50 is contracted and the rotating bracket 30 is retracted and rotated.
- step 206 the limit switch 95b detects that the storage rotation is completed, and turns on the pilot lamp 97c.
- step 207 the operator confirms that the pilot lamp 97c is lit, and switches a boom switching valve (not shown) to shorten the top boom 5 by a predetermined amount. At this time, the pilot lamp 97c turns off once, and turns on again when it reaches a predetermined position.
- step 208 the limit switch 92b detects that the top boom 5 has been shortened, switches the solenoid operated valve 85 to the position 85c, and locks the first lock.
- the first lock cylinder 44 of the device 40 is reduced and the top boom pin 11 is unlocked.
- step 209 the limit switch 96b detects that the first lock release has been completed, and moves the first solenoid operated switching valve 77 and the solenoid operated valve 78 to the position 7 7b. And switch to the position 78c, extend the horizontal holding cylinder 25 of the horizontal holding device 20, and store the auxiliary jib 6.
- step 210 the limit switch 93b detects that the trap jib 6 has been completely stored, and turns on the pilot lamp 97d.
- step 2 1 the operator confirms that the pilot lamp 97 d is lit, returns the tilt lever 70, and attaches the storage pin 7 (shown in Fig. 1).
- the storage method of the supplementary jib first, when the boom 4 and the catch jib 6 are arranged side by side, the distal side of the boom 4 and the catch jib 6 are connected to the lock pin of the second lock device 60. 6 Detach by removing 5. Next, the rotating bracket portion 30 projecting forward of the boom 4 is rotated with respect to the boom 4 by the turning force of the rotating cylinder 55.
- the first lock cylinder 44 After pivoting to the predetermined position, the first lock cylinder 44 is contracted and the opening between the auxiliary jib 6 and the side near the distal end of the boom 4 when the auxiliary jib 6 and the boom 4 are juxtaposed. Release and let go. After disengagement, the auxiliary jib 6 is laterally swung by the force of the horizontal holding cylinder 25 between the boom 4 and the auxiliary jib 6 and stored in a predetermined position.
- the operation of extending or retracting the catch jib is automatically performed simply by the operator performing the switching switch operation, the boom operation, and the tilt lever operation while checking the display device in the cab. Done. Therefore, the number of preparation steps is small, the fatigue is easy, in a short time, and there is little risk of interference between the parts due to erroneous operation.
- the turning radius of the catch jib 6 can be sufficiently obtained on flat ground, but when the auxiliary jib 6 is extended or stored in a narrow place, as shown in FIG. May be raised, and the rotating bracket 30 may be rotated with the catch jib 6 tilted.
- the upright angle ⁇ of the boom 4 is 24 ° to 26 °, and if the tilt cylinder 8 is made the shortest in this state, the catch jib 6 tilts in the direction of the arrow from the position of the two-dot chain line. And move to the position indicated by the solid line.
- the position G of the center of gravity of the catch jib 6 is substantially the center position of the top boom pin 11 which is the rotation axis of the rotating bracket 30.
- the rotating torque can be reduced.
- the auxiliary jib 6 is laterally swung to a predetermined position by a horizontal holding cylinder 25 between the boom 4 and the auxiliary jib 6 so as to project. Due to this overhang, when the auxiliary jib and the boom are juxtaposed, the side surface near the distal end of the boom 4 is engaged with the auxiliary jib 6 by the force ⁇ and the first locking device 40.
- the catch jib 6 is tilted downward by the contraction of the tilt cylinder 8, and the rotating bracket portion 30 is extended forward by the rotating force of the rotating cylinder 55 to the front of the boom 4.
- the distal end side surface of the boom 4 and the auxiliary jib 6 are engaged by the second locking device 60.
- the auxiliary jib 6 and the boom 4 are juxtaposed, the side surface near the tip of the boom 4 and the catching jib 6 are moved by the contraction operation of the first lock cylinder 44 of the first lock device 40. Let go. After the detachment, the auxiliary jib 6 is laterally swung by the force of the horizontal holding cylinder 25 between the boom 4 and the catch jib 6 and stored in a predetermined position.
- the crane since the overhanging and retracting operations are automatically performed by the switching switch operation, the boom operation, and the tilt lever operation, the crane can be operated in a short time, easily, and with little risk of interference due to an erroneous operation. It is useful as a method and an apparatus for automatically extending and storing the auxiliary jib.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95909954A EP0747315A4 (en) | 1994-02-25 | 1995-02-22 | METHOD AND DEVICE FOR AUTOMATICALLY STRETCHING AND FOLDING UP THE MOVING JACK OF A TELESCOPIC CRANE |
KR1019960704490A KR970701150A (ko) | 1994-02-25 | 1995-02-22 | 크레인용 보조지브의 자동 장출, 격납방법 및 장치(method and device for automatically stretching and storing a sub-jib for acrane) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06052734A JP3090393B2 (ja) | 1994-02-25 | 1994-02-25 | クレーン用補ジブの自動張り出し、格納方法および装置 |
JP6/52734 | 1994-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995023111A1 true WO1995023111A1 (fr) | 1995-08-31 |
Family
ID=12923167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/000252 WO1995023111A1 (fr) | 1994-02-25 | 1995-02-22 | Procede et dispositif de deploiement et de rangement automatique du bras articule d'une fleche de grue telescopique |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0747315A4 (ja) |
JP (1) | JP3090393B2 (ja) |
KR (1) | KR970701150A (ja) |
CN (1) | CN1143353A (ja) |
TW (1) | TW345195U (ja) |
WO (1) | WO1995023111A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3652437B2 (ja) * | 1996-05-09 | 2005-05-25 | 株式会社加藤製作所 | 自走式クレーンのブームヘッド格納機構 |
JPH11199177A (ja) * | 1998-01-09 | 1999-07-27 | Kobe Steel Ltd | クレーンのジブ張出し、格納方法および同装置 |
CN102701087B (zh) * | 2012-06-12 | 2014-05-21 | 北京市三一重机有限公司 | 一种臂架及工程机械 |
JP6962425B2 (ja) * | 2015-11-20 | 2021-11-05 | 株式会社タダノ | アダプタ |
JP2017095221A (ja) * | 2015-11-20 | 2017-06-01 | 株式会社タダノ | アダプタ |
DE102016009038B4 (de) * | 2016-07-25 | 2018-02-08 | Liebherr-Werk Ehingen Gmbh | Klappspitzen-Anlenkstück und Verfahren zum Montieren einer Klappspitze |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52137469U (ja) * | 1976-04-13 | 1977-10-19 | ||
JPS62103595U (ja) * | 1985-12-19 | 1987-07-01 | ||
JPH046640B2 (ja) * | 1986-07-21 | 1992-02-06 | Tadano Kk | |
JPH06239582A (ja) * | 1993-02-18 | 1994-08-30 | Kobe Steel Ltd | ホイール式クレーン |
JPH0676283U (ja) * | 1993-04-02 | 1994-10-28 | 住友建機株式会社 | クレ−ンにおけるジブの振出・格納装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538119Y2 (ja) * | 1972-12-20 | 1978-03-02 | ||
JPS5431489Y2 (ja) * | 1974-08-09 | 1979-10-02 | ||
JPS55106991A (en) * | 1979-02-05 | 1980-08-16 | Shin Meiwa Ind Co Ltd | Structure of connected portion of folded boom |
JPS58144590U (ja) * | 1982-03-25 | 1983-09-29 | 日本車輌製造株式会社 | クレ−ンの荷重演算装置の表示盤 |
FR2661665B1 (fr) * | 1990-05-03 | 1992-09-04 | Ppm Sa | Fleche de manutention comprenant une fleche principale et une fleche complementaire. |
JP2552159Y2 (ja) * | 1992-05-29 | 1997-10-27 | 株式会社タダノ | ジブ付クレーンのジブ回動装置 |
-
1994
- 1994-02-25 JP JP06052734A patent/JP3090393B2/ja not_active Expired - Fee Related
-
1995
- 1995-02-16 TW TW085215623U patent/TW345195U/zh unknown
- 1995-02-22 CN CN95191934A patent/CN1143353A/zh active Pending
- 1995-02-22 EP EP95909954A patent/EP0747315A4/en not_active Withdrawn
- 1995-02-22 WO PCT/JP1995/000252 patent/WO1995023111A1/ja not_active Application Discontinuation
- 1995-02-22 KR KR1019960704490A patent/KR970701150A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52137469U (ja) * | 1976-04-13 | 1977-10-19 | ||
JPS62103595U (ja) * | 1985-12-19 | 1987-07-01 | ||
JPH046640B2 (ja) * | 1986-07-21 | 1992-02-06 | Tadano Kk | |
JPH06239582A (ja) * | 1993-02-18 | 1994-08-30 | Kobe Steel Ltd | ホイール式クレーン |
JPH0676283U (ja) * | 1993-04-02 | 1994-10-28 | 住友建機株式会社 | クレ−ンにおけるジブの振出・格納装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0747315A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0747315A1 (en) | 1996-12-11 |
CN1143353A (zh) | 1997-02-19 |
EP0747315A4 (en) | 1997-06-04 |
JPH07237888A (ja) | 1995-09-12 |
TW345195U (en) | 1998-11-11 |
KR970701150A (ko) | 1997-03-17 |
JP3090393B2 (ja) | 2000-09-18 |
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