WO2004089804A1 - クレーンの転倒防止装置 - Google Patents
クレーンの転倒防止装置 Download PDFInfo
- Publication number
- WO2004089804A1 WO2004089804A1 PCT/JP2004/004910 JP2004004910W WO2004089804A1 WO 2004089804 A1 WO2004089804 A1 WO 2004089804A1 JP 2004004910 W JP2004004910 W JP 2004004910W WO 2004089804 A1 WO2004089804 A1 WO 2004089804A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- crane
- detector
- prevention device
- reference value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
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- 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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
-
- 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
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
Definitions
- the present invention relates to a crane overturn prevention device for preventing a crane from overturning during operation.
- a crawler crane 1 equipped with a traveling body running by a crawler under the frame 11 has a front end and a rear end of the frame 11 in order to ensure stability during work.
- a pair of left and right (a total of four) outriggers A, B, C, and D are provided at the ends, respectively (see Japanese Patent Application Laid-Open No. 2002-31772).
- a moment limiter device using a microcomputer a flexure structure interposed between the outrigger body and the grounding board, and the amount of flexure
- a fall prevention device equipped with a detection means for detecting, and a control means for issuing an alarm when the amount of deflection exceeds a predetermined set value or shutting off the hydraulic circuit (see Japanese Utility Model Laid-Open No. 6-635777). ).
- the fall prevention device detects the ground reaction force of each outrigger with a load detector, and determines the minimum of the sum of the ground reaction forces of the two ground triggers adjacent to each other in front, rear, left and right, and all ground triggers.
- a predetermined fall prevention measure is executed by calculating the ratio of the ratio of the ground reaction force to the total sum of the ground reaction forces and comparing this ratio value (safety level) with a predetermined safety standard value (Japanese Patent Laid-Open No. See Japanese Patent Publication No. 18787).
- This fall prevention device performs the following processing to prevent the fall.
- the safety level R is compared with a predetermined safety standard value R0,
- this fall prevention device When it becomes R ⁇ R0, determine that there is a danger of falling and activate the warning lamp.
- this fall prevention device has the following problems.
- the relationship between the safety level R and the safety standard value R0 is R ⁇ R0,
- the minimum value Smin of the sum of the ground reaction forces of the two adjacent outriggers at the time of the alarm generation decreases, and the reaction force criterion for outputting the crane falling alarm is reduced. It will fall and approach zero.
- the value of the minimum value of the sum of the ground reaction forces of the two adjacent key triggers when the Smin alarm is close to 0 means that there is little room from the time of the alarm to the fall.
- the inertia applied to the suspended load or boom will cause the safety level R to be safe.
- the key trigger may be in a floating state and fall down.
- each of the outriggers A, B, C, and D of the crawler crane 1 has a mounting member 1 rotatably supported by a frame 11 on a rotating shaft 12 in a horizontal direction. 3, a base arm 15 supported on the mounting member 13 by an undulating shaft 14 so as to be able to undulate, and an intermediate arm 17 supported on the base arm 15 by an undulating shaft 16 so as to be able to undulate.
- a distal arm 18 slidably inserted into the intermediate arm 17, a grounding portion 19 slidably connected to the distal end of the distal arm 18, a mounting member 13 and a base arm
- a trigger cylinder 20 that is provided between the cylinder and the base arm 15 to raise and lower the base arm 15.
- the load detector is generally provided between the tip arm 18 and the grounding portion 19.
- the electric wiring from the load detector to the operation unit of the fall prevention device must be connected between the distal arm 18 and the intermediate arm 17, and between the intermediate arm 7 and the base arm 15. Since it must be laid through each rotating part between the base arm 15 and the mounting member 13 and between the mounting member 13 and the frame 11, not only is the electrical wiring troublesome, but also there is a risk of disconnection. There are many.
- the crawler crane 1 must be compact so as not to widen the mouth opening due to the demand for transportation by transport vehicles. For this reason, the size of the outriggers 8, B, C, and D must be as small as possible, and the external dimensions of the load detector 2 are restricted, and the installation position cannot be freely selected.
- the present invention solves the above-described problem in the crane tipping prevention device, can prevent a decrease in safety due to a change in working radius, and can reduce the external dimensions of the load detector to enable high load detection.
- An object of the present invention is to provide a crane overturn prevention device that can eliminate a risk of disconnection of electric wiring due to provision of a load detector between a tip arm of an outrigger and a ground portion.
- the crane tipping prevention device of the present invention has a frame In a crawler crane equipped with at least three ground triggers, a load detector that detects the ground reaction force of each ground trigger and the sum of the ground reaction force detection values of two adjacent ground triggers Is calculated and the minimum value is calculated. The obtained minimum value is compared with a preset advance reference value and a limit reference value.If the minimum value falls below the advance reference value, an advance warning signal is output and the limit reference value is calculated. An alarm output unit that outputs a limit alarm signal when the temperature falls below the threshold is provided.
- the alarm output unit calculates the sum of the detected values of the ground reaction forces of two outriggers adjacent to each other based on the detected values of the load detector, and determines the minimum value. The obtained minimum value is compared with a preset notice reference value and limit reference value. If the notice value falls below the notice reference value, an advance warning signal is output.If the notice value falls below the limit reference value, a limit alarm signal is output. I do.
- the value of the minimum value of the sum of the detected values of the ground reaction forces of the two outriggers adjacent to each other does not decrease when an alarm occurs, and the safety due to the change in the working radius does not decrease. Can be prevented from decreasing.
- the load detector can be downsized and high load detection is possible.
- the force received by the load detector is compared with the ground reaction force received by the grounding part. There is no problem even if it becomes larger, and the installation position can be freely selected.
- the load detector is provided at the base end of the outrigger cylinder or the base end of the base arm, there is no danger of disconnection of the electric wiring due to the provision of the load detection device at the end of the boom.
- Provision of a setting switching means that can switch between the notice reference value and the limit reference value in accordance with the overhang distance of the trigger will provide an appropriate setting even if the crane is used with different overhang distances of the crane. Alarm output is possible.
- a crawler crane is provided with an operation switching means that switches between the inactive mode and the operation mode according to the switching between the traveling mode and the crane mode
- the crane overturn prevention device is provided. Can be activated in the crane mode of the crawler crane, and deactivated in the traveling mode in which operation is unnecessary.
- the crane overturn prevention device includes a boom length detector that detects the boom length, a boom angle detector that detects the boom angle, a load detector that detects the lifting load, and a boom length. Based on the detection values of the detector and the boom angle detector, the limit load for preventing damage corresponding to the working radius is calculated, and the obtained limit load is compared with the detection value of the load detector to determine the load load. If a damage prevention device consisting of an arithmetic control unit that outputs a damage prevention signal when the detected value of the load reaches the limit load is provided, the lifting load becomes excessive and the crawler crane is damaged. In addition, the crawler crane can be prevented from being damaged by stopping the operation of the crawler crane or alerting the worker by issuing an alarm. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a configuration diagram of a crane overturn prevention device according to an embodiment of the present invention.
- FIG. 2 is a side view showing a state of the crawler lane during operation.
- FIG. 3 is a side view of the key trigger showing the maximum overhang state.
- FIG. 4 is a side view of the key trigger showing the minimum overhang state.
- FIG. 5 is a side view of the load detector.
- FIG. 6 is a sectional view taken along line EE of FIG.
- FIG. 7 is an explanatory diagram of the operation of the overturn prevention device.
- FIG. 8 is an explanatory diagram of the operation of the overturn prevention device.
- FIG. 9 is a side view of the key trigger showing a state where the load detector is attached to the base end of the base arm.
- FIG. 10 is a side view of a crawler crane provided with a damage prevention device.
- FIG. 11 is a block diagram showing the configuration of the damage prevention device.
- FIG. 12 is a diagram showing the relationship between the limit load with respect to the working radius and the crane strength limit load.
- FIG. 13 is a plan view of a conventional crawler crane.
- FIG. 14 is a side view of an arc trigger of a conventional crawler crane. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a configuration diagram of a crane overturn prevention device according to an embodiment of the present invention
- FIG. 2 is a side view showing a state of a crawler crane during operation
- FIG. Fig. 4 is a side view of the key trigger showing the minimum overhang state
- Fig. 5 is a side view of the load detector
- Fig. 6 is a sectional view taken along line E-E of Fig. 5, and Figs.
- FIG. 4 is an explanatory diagram of the operation of the device.
- the crawler crane 1 includes an alarm output unit 4, a boom 5 capable of turning, raising and lowering, and a telescopic boom 5 on a frame 11 and a traveling body 6 traveling by a crawler below the frame 11.
- a pair of left and right outriggers A, B, C, and D are provided at the front end and rear end of the frame 11 respectively.
- each of the outriggers A, B, C, and D of the crawler crane 1 includes a mounting member 13 supported on a frame 11 by a rotating shaft 12 so as to be rotatable in a horizontal direction.
- a trigger cylinder 20 for raising and lowering the base arm 15.
- the angle fixing holes (not shown) of the part are inserted into the maximum extension fixing hole 31, the minimum extension fixing hole 32, or the storage fixing hole 33, and the fixing pin 34 is inserted. The angle with respect to the base arm 15 can be changed and fixed.
- a maximum telescopic hole 35 is provided at the base end of the distal arm 18, and a minimum telescopic hole 36 is provided at the distal end of the distal arm 18. Fit the maximum expansion hole 3 5 or the minimum expansion hole 3 6 When the outriggers 38 are inserted, the lengths of the intermediate arm 17 and the tip arm 18 can be changed and fixed so that the outrigger extension distance La becomes maximum or minimum.
- a load detector 2 is attached to the base end of the outrigger cylinder 20 of A, B, C, or D with an attachment pin 21.
- the load detector 2 includes a load cell 23 in an upper cell case 22 having a pin hole 29 through which the mounting pin 21 is inserted.
- a plurality of disc springs 27 are provided as an elastic member between the lower cell case 25 and the lower cell case 26. The elastic force of the disc springs 27 causes the upper cell case 22 and the lower cell case 2 to have elasticity. 6 is held such that a gap G is formed between them.
- Half of the plurality of disc springs 27 are overlapped with each other in the opposite direction, and the shaft 24 is passed through the hole of the disc spring 27. Since the spring retainer 25 has a machined round shape, the so-called R portion 28, the outer edge of the disc spring 27 has a spring retainer 2 so that the inner edge of the disc spring 27 does not interfere with the R portion 28. 5 is arranged to be in contact with. Since the shaft 24 is small and must be rigid to receive the load, stainless steel is used as the material.
- the disc spring 27 When a load is applied to the load detector 2, the disc spring 27 is bent, and a load detection signal is output from the load cell 23. When the load exceeds the set load, the upper cell case 22 and the lower cell case 26 are joined to protect the load cell 23 from overload. Further, by changing the number of stacked disc springs 27, it is possible to cope with a change in the measurement load range of the mouth cell 23.
- the link output unit 4 includes an adding unit 41, a comparing unit 42, and a controller 43.
- the notice reference value F ⁇ in the outrigger maximum overhang state is set to 180 O O N
- the limit reference value F u is set to 500 N
- the outrigger minimum overhang state is set.
- the notice reference value Fn in the state is set to 550 ON
- the limit reference value Fu is set to 2000 ON.
- the set values of the notice reference value Fn and the limit reference value Fu are switched by the maximum / minimum switching switch 44 according to whether the outriggers A, B, C, and D are in the maximum extended state or the minimum extended state.
- the power supply 45 of the overturn prevention device is automatically turned on.
- the maximum trigger overstretched state setting is selected by default. No action required.
- Each of the outriggers A, B, C, and D is horizontally rotated from the storage position on the frame 11 in the four extending directions as shown in FIG. Lift the arm 17 and align the angle fixing hole with the maximum overhang fixing hole 31 to insert the fixing pin 34. Further, the fixing pin 38 is pulled out of the telescopic fixing hole 37, the tip arm is pulled out, the maximum telescopic hole 35 and the telescopic fixing hole 37 are aligned, and the fixing pin 38 is inserted and fixed. The installation is completed when the outrigger cylinder 20 is extended, the grounding portion 19 is grounded, and the traveling body 6 is raised as shown in FIG.
- the ground reaction forces Pa, Pb, Pc, and Pd of the outriggers A, B, C, and D are provided at the base end of the outrigger cylinder 20 of each of the outriggers A, B, C, and D.
- Load cells 23 A, 23 B, 23 C and 23 D of the load detector 2 are detected as load values F a, F b, F c and F d, and sent to the notification output unit 4.
- the load detector 2 is provided at the base end of the arm trigger cylinder 20, and the undulating shaft 14 at the base end of the base arm 15 is coupled with the moment due to the ground reaction force.
- the product of the ground reaction force P received by the ground contact part 19 and the outrigger extension L a, the force F received by the load detector 2, the undulating shaft 14 and the outrigger cylinder 20 It is equal to the product of the distance Lb between the pins 21. That is,
- the outrigger extension distance L a is 1.5 m, the undulation axis 14 and the outrigger If the distance Lb between the mounting pins 21 of the solder 20 is 0.3 m, the detection value F of the load detector 2 is five times the actual ground reaction force P.
- the adding means 41 of the alarm output unit 4 the sum of the detection values of the load cells 23 of the two triggers adjacent to each other in front, rear, left and right,
- the comparison means 42 compares the sums S1, S2, S3, and S4 of the respective detected values to determine the minimum value Smin.
- the controller 43 is activated. Outputs an advance warning signal.
- the controller 43 outputs a limit alarm signal and outputs a stop signal to output the crawler crane 1. Activate the ⁇ -ode valve (not shown) of this and shut down the clock lane 1.
- the maximum lifting load is 9800 N.
- the maximum and minimum overstretched switch settings are selected by default when the power is turned on. 4 Operate 4 to switch to the set value of the I can.
- Each of the outriggers A, B, C, and D is horizontally rotated from the storage position on the frame 11 in the four directions of extension, pull out the fixing pin 34 from the storage fixing hole 33, and lift the intermediate arm 17 to minimize it. Align the angle fixing hole with the extension fixing hole 32 and insert the fixing pin 34.
- the distal arm 18 does not extend from the intermediate arm 17. The installation is completed when the outrigger cylinder 20 is extended, the grounding portion 19 is grounded, and the traveling body 6 is raised.
- the ground reaction forces Pa, Pb, Pc, and Pd of the outriggers A, B, C, and D are provided at the base end of the outrigger cylinder 20 of each of the outriggers A, B, C, and D.
- the load cells 23 A, 23 B, 23 C, and 23 D of the load detector 2 are detected as load values F a, F b, F c, and F d and sent to the alarm output unit 4.
- the load detector 2 is provided at the base end of the arm trigger cylinder 20, and the undulation axis 14 at the base end of the base end arm 15 is used to determine the moment due to the ground reaction force.
- the product of the ground reaction force P received by the ground contact part 19 and the outrigger extension distance La, the force received by the load detector 2, the undulating shaft 14 and the mounting pin of the outrigger cylinder 20 It is equal to the product of the distance L b between 2 1. That is,
- the load detector 2 The detected value F is 2.5 times the actual ground reaction force P.
- the comparison means 42 compares the sums S1, S2, S3, and S4 of the respective detected values to determine the minimum value Smin.
- the controller 4 3 outputs an advance warning signal.
- the controller 43 outputs a limit alarm signal and outputs a stop signal to output the crawler lane 1 Activate the unloading valve (not shown) to stop the crawler crane 1.
- the load detector 2 may be provided not at the base end of the outrigger cylinder 20 but at the base end of the base arm 15 as shown in FIG.
- FIG. 10 is a side view of a crawler crane provided with a damage prevention device according to another embodiment of the present invention
- FIG. 11 is a block diagram showing a configuration of the damage prevention device
- FIG. 12 is a limit load with respect to a working radius.
- FIG. 4 is a diagram showing a relationship between the load and a crane strength limit load.
- the crawler crane 1 shown in FIG. 10 has a retractable boom 5 pivotally supported by a column 7 that rotates on the frame 11, and is hooked by a wire port 9 of a winch (not shown). 10 is suspended from the tip of the boom 5.
- the crawler crane 1 includes a crane overturn prevention device provided with a damage prevention device. That is, the boom 5 includes a boom length detector 51, a boom angle detector 52, and a load detector 54 that detects a lifting load by detecting tension acting on the wire rope 9.
- the alarm output unit 4 is provided with an arithmetic control unit 55 for preventing damage.
- Crane operation stop means 5 6 is provided on frame 11 Has been.
- a load cell is used as the load detector 54, but other types such as detecting a lifting load based on a difference in internal pressure of an up-and-down cylinder of the boom 5 can also be used.
- the sum ⁇ P i of the ground reaction forces of all outriggers A, B, C, and D is equal to the sum of the lifting load W and the weight (constant) of the aircraft. Can be used for load detection.
- the calculation control unit 55 includes a work radius calculation unit 57, a limit load calculation unit 58, and a comparison unit 59.
- the boom 5 is extended and retracted, and the suspended load is hung on the hook 10 and wound up and down by ⁇ inch.
- the boom length detector 51 detects the boom length Lc
- the boom angle detector 52 detects the boom angle ⁇ , and sends the detected values to the working radius calculator 57.
- the load detector 54 detects the lifting load W and sends the detected value to the comparison unit 59.
- the work radius calculation unit 57 obtains a work radius r from the boom length Lc and the boom angle ⁇ , and sends the value to the limit load calculation unit 58.
- the limit load calculation unit 58 has a crane strength limit load that will damage the crawler crane 1 and a limit load WL for preventing damage, which is smaller than WB, corresponding to the working radius r.
- the limit load calculating section 58 obtains a corresponding limit load WL from the working radius r sent from the working radius calculating section 57, and sends the value to the comparing section 59.
- the comparison unit 59 compares the limit load WL obtained by the limit load calculation unit 58 with the lift load W sent from the load detector 54, and when the lift load W reaches the limit load WL, sags. A stop signal is sent to the blade operation stopping means 56 to stop the operation of the crawler crane 1.
- the crane operation stopping means 56 for example, an electromagnetic valve for unloading the unload valve of the operation circuit of the hydraulic actuator of the crawler crane 1 is used.
- An alarm generating means 60 is provided in place of the crane operation stopping means 56, and when the lifting load W reaches the limit load WL, an alarm signal is sent from the comparison section 59, and an alarm is issued to the worker. You can also encourage it.
- the crane tipping prevention device of the present invention if the outrigger overhang distance is constant, the notice reference value and the limit reference value do not decrease even when the working radius is large. Therefore, it is possible to prevent a decrease in safety due to a change in working radius.
- the calculation of the sum of the ground reaction forces of all outriggers and the ratio of the minimum sum of the ground reaction forces of the two adjacent key triggers to the sum of the ground reaction forces of all the earth triggers There is no need to exercise this, and arithmetic processing is simplified.
- the external dimensions can be reduced and high loads can be detected.There is no problem even if the force received by the load detector is greater than the ground reaction force received by the grounding part.
- the installation position can be freely selected.
- the crane overturn prevention device includes a boom length detector that detects the boom length, a boom angle detector that detects the boom angle, a load detector that detects the lifting load, and a boom length. Based on the detection values of the detector and the boom angle detector, the limit load for preventing damage corresponding to the working radius is calculated, and the obtained limit load is compared with the detection value of the load detector to determine the load load. If a damage prevention device consisting of an arithmetic control unit that outputs a damage prevention signal when the detected value of the load reaches the limit load is provided, the lifting load becomes excessive and the crawler crane is damaged. In addition, the crawler crane can be prevented from being damaged by stopping the operation of the crawler crane or alerting the worker by issuing an alarm.
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Abstract
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Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/552,787 US7364044B2 (en) | 2003-04-10 | 2004-04-05 | Safety device against overturning crane |
| AU2004228541A AU2004228541B2 (en) | 2003-04-10 | 2004-04-05 | Safety device against overturning of crane |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003105997A JP3683571B2 (ja) | 2003-04-10 | 2003-04-10 | クレーンの転倒防止装置 |
| JP2003-105997 | 2003-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004089804A1 true WO2004089804A1 (ja) | 2004-10-21 |
Family
ID=33156898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/004910 Ceased WO2004089804A1 (ja) | 2003-04-10 | 2004-04-05 | クレーンの転倒防止装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7364044B2 (ja) |
| JP (1) | JP3683571B2 (ja) |
| AU (1) | AU2004228541B2 (ja) |
| WO (1) | WO2004089804A1 (ja) |
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| US7677861B1 (en) * | 2005-06-08 | 2010-03-16 | Fehringer Joseph V | Slat replacement machine |
| WO2014059457A1 (de) * | 2012-10-19 | 2014-04-24 | Palfinger Ag | Sicherheitseinrichtung für einen kran |
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| AT413120B (de) * | 2003-05-07 | 2005-11-15 | Josef Konrad | Geländegängiges fahrzeug mit schreitgliedern |
| JP4841877B2 (ja) * | 2005-06-29 | 2011-12-21 | 株式会社前田製作所 | 自走式クレーン |
| IT1398962B1 (it) * | 2010-02-18 | 2013-03-28 | C M C S R L Societa Unipersonale | Dispositivo stabilizzatore per macchina operatrice |
| CA2732170C (en) * | 2010-04-16 | 2014-03-25 | Henry Friesen | Portable silo with adjustable legs |
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| IT1403343B1 (it) * | 2011-01-17 | 2013-10-17 | C M C S R L Societa Unipersonale | Dispositivo stabilizzatore per macchine operatrici |
| US9327946B2 (en) * | 2012-07-16 | 2016-05-03 | Altec Industries, Inc. | Hydraulic side load braking system |
| CN103879911B (zh) * | 2012-12-20 | 2016-06-08 | 北汽福田汽车股份有限公司 | 一种工程机械支腿及具有该支腿的起重机 |
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| JP6626334B2 (ja) * | 2015-12-11 | 2019-12-25 | 古河ユニック株式会社 | アウトリガ装置、これを備えるクローラクレーン、アウトリガ装置用の接地部材、アウトリガ装置用の緩衝部 |
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| CN110312674A (zh) * | 2017-02-09 | 2019-10-08 | 株式会社前田制作所 | 移动式起重机的安全装置 |
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| WO2020013320A1 (ja) * | 2018-07-13 | 2020-01-16 | コベルコ建機株式会社 | 移動式クレーン |
| JP7467836B2 (ja) * | 2019-07-12 | 2024-04-16 | コベルコ建機株式会社 | 移動式クレーン |
| JP7189491B2 (ja) * | 2018-07-13 | 2022-12-14 | コベルコ建機株式会社 | 移動式クレーン |
| JP7137121B2 (ja) * | 2018-07-13 | 2022-09-14 | コベルコ建機株式会社 | 移動式クレーン |
| JP7467835B2 (ja) * | 2019-07-12 | 2024-04-16 | コベルコ建機株式会社 | 移動式クレーン |
| JP7132821B2 (ja) * | 2018-10-31 | 2022-09-07 | 株式会社アイチコーポレーション | 作業車の安全装置 |
| DE102019133069B4 (de) * | 2019-12-04 | 2025-02-20 | MULAG FAHRZEUGWERK Heinz Wössner GmbH & Co. KG | Ausleger-Arbeitsgerät, selbstfahrende Arbeitsmaschine mit einem solchen Ausleger-Arbeitsgerät sowie ein Verfahren zum Detektieren der auf den Ausleger einwirkenden Belastungen |
| CN112938777B (zh) * | 2021-02-03 | 2022-12-20 | 交通运输部公路科学研究所 | 一种折臂式随车起重机重复作业系统及方法 |
| US20240359954A1 (en) * | 2021-08-19 | 2024-10-31 | Tadano Ltd. | Loading type truck crane |
| EP4238926A1 (en) | 2022-03-01 | 2023-09-06 | Hiab AB | A crane assembly, and a method in relation thereto |
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| US7677861B1 (en) * | 2005-06-08 | 2010-03-16 | Fehringer Joseph V | Slat replacement machine |
| WO2014059457A1 (de) * | 2012-10-19 | 2014-04-24 | Palfinger Ag | Sicherheitseinrichtung für einen kran |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004307188A (ja) | 2004-11-04 |
| US7364044B2 (en) | 2008-04-29 |
| JP3683571B2 (ja) | 2005-08-17 |
| US20070012641A1 (en) | 2007-01-18 |
| AU2004228541A1 (en) | 2004-10-21 |
| AU2004228541B2 (en) | 2008-04-10 |
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