CN1037425C - Mobile reach tower crane - Google Patents

Mobile reach tower crane Download PDF

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Publication number
CN1037425C
CN1037425C CN94194275A CN94194275A CN1037425C CN 1037425 C CN1037425 C CN 1037425C CN 94194275 A CN94194275 A CN 94194275A CN 94194275 A CN94194275 A CN 94194275A CN 1037425 C CN1037425 C CN 1037425C
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CN
China
Prior art keywords
mentioned
mode
crane
arm
crane arm
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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.)
Expired - Fee Related
Application number
CN94194275A
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Chinese (zh)
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CN1136304A (en
Inventor
泽辺浩之
太田伸一
潮田武士
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corporation Looses Mike Small
Komatsu Ltd
Original Assignee
Corporation Looses Mike Small
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corporation Looses Mike Small, Komatsu Ltd filed Critical Corporation Looses Mike Small
Publication of CN1136304A publication Critical patent/CN1136304A/en
Application granted granted Critical
Publication of CN1037425C publication Critical patent/CN1037425C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • 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
    • 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
    • B66C23/86—Slewing gear 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
    • 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
    • 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
    • B66C23/94—Safety gear for limiting slewing movements
    • 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
    • B66C2700/0364—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks with a slewing arm

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

A mobile reach tower crane which can perform a tower crane operation as well as a normal crane operation to thereby provide versatility and which can secure the safety during operation by setting various limits for respective operation modes. To this end, a main hook (21) is provided on the base boom (61) of a second boom (6), and an auxiliary hook (22) is provided on the distal boom of the second boom (6). In addition, it is possible to select between an operation mode B in which the main hook (21) is used and an operation mode A in which the auxiliary hook (22) is used, and boom hoising angle limit, length limit, rated load and boom slewing speed limit may be set for respective operation modes.

Description

Mobile reach tower crane
The present invention relates to mobile reach tower crane, particularly relate to the mobile reach tower crane of the commonality raising that makes hoisting crane.
Existing crane-car is that the front end at the first weighing arm that can freely stretch is provided with second crane arm that can freely stretch, and under the first weighing arm almost became upright state, fluctuating second crane arm that freely stretches thus, carried out work as tower crane.
But above-mentioned existing crane-car is as the specialized equipment of tower crane use and design-calculated.Therefore, only be provided with a suspension hook, so there is following problem, promptly scope of work, load-bearing capacity are restricted, and for example can not carry out main suspension hook, two kinds of operations of secondary suspension hook.In addition, rotative speed also slow (being suitable for tower crane) etc. are so there are shortcomings such as commonality difference.
The present invention succeeds in developing in order to solve the existing in prior technology shortcoming, the purpose of this invention is to provide the high mobile reach tower crane of a kind of commonality, this hoisting crane is provided with main suspension hook and secondary suspension hook, so that can carry out common crane job and as the operation of tower crane, rotative speed also can change according to different operations.
Mobile reach tower crane of the present invention, its characteristics are, on the cardinal extremity crane arm of second crane arm main suspension hook are set, and on the front end crane arm of second crane arm secondary suspension hook are set.Simultaneously on controller, be provided with the mode of operation select switch,, can select any one mode of operation among mode of operation B and the mode of operation A with this mode of operation select switch.Mode of operation B fixes the first weighing arm and second crane arm shape that is in line, the mode of carrying out operation with main suspension hook or secondary suspension hook.Mode of operation A makes the first weighing arm almost be erectility, and second crane arm that rises and falls that freely stretches, the mode of carrying out operation with secondary suspension hook.For selecteed each mode of operation, also can set fluctuating angle limits value, boom length limits value, rated load and the crane arm rotative speed limits value of the first weighing arm and second crane arm respectively.In addition, the crane arm rotative speed limits value of above-mentioned mode of operation A is set lower for good than the crane arm rotative speed limits value of operation mode B.And, fluctuating angle, the boom length when operation, hanging any one value in thing weight and the crane arm rotative speed when surpassing setting value, controller just to auto-stop mechanism output danger signal, can make operation turn round and stop automatically.
Adopt the hoisting crane of this structure, can make the first weighing arm and second crane arm become a linear state and carry out common crane job, and make the first weighing arm almost become erectility and make second crane arm become horizontality and carry out the tower crane operation.And, can on the operation seat, operate with control lever, operation is very easy.In addition, owing to be provided with secondary suspension hook and main suspension hook in the front and base end side portion of second crane arm, so, can select as required, improved commonality.Also owing to can select mode of operation with switch (this switch is located at the position of operating personal easy operating), therefore, conversion process mode A and B continually.By selecting mode of operation, can set fluctuating angle limits value, boom length limits value, rated load and crane arm rotative speed limits value to each mode of operation, when surpassing this setting value, stop operation automatically.Therefore, no matter adopt any mode of operation, can both carry out operation safely.
Brief description of drawings:
Fig. 1 is the lateral plan of mobile reach tower crane of the mode of operation B of the embodiment of the invention;
Fig. 2 is the lateral plan of mobile reach tower crane of the mode of operation A of embodiment;
Fig. 3 is the pith oil hydraulic circuit figure that selects the crane arm rotative speed corresponding to the various mode of operation of embodiment;
Fig. 4 is the block scheme of control system of the mobile reach tower crane of expression embodiment;
Fig. 5 is the diagram of circuit of effect of the mobile reach tower crane of expression embodiment;
Fig. 6 is the part oil hydraulic circuit figure when in an embodiment the pump of Fig. 3 Y portion being replaced as changeable pump;
Fig. 7 is the part oil hydraulic circuit figure when in an embodiment the control of the control presssure of Fig. 3 Z part main control valve being replaced as other control.
Below, with reference to the accompanying drawings, the embodiment of mobile reach tower crane of the present invention is described in detail.
In Fig. 1,, on this swivel 3, be provided with the first weighing arm 4 and operator's compartment 5 etc. by being provided with swivel 3 on the wheel 2 transportable car bodies 1 with rotating freely.In addition, also can car body 1 be moved by crawler belt.Above-mentioned the first weighing arm 4 is made of the telescopic crane arm of multistage, and its base end part is connected on the swivel 3, utilizes crane arm oil hydraulic cylinder 23 that it is is freely risen and fallen.The base end part of second crane arm 6 is connected on the leading section of the first weighing arm 4.
In Fig. 2, second crane arm 6 also is made of the telescopic crane arm of multistage, utilize crane arm oil hydraulic cylinder 7, the front end of this second crane arm 6 is is freely risen and fallen, from the cardinal extremity crane arm 61 of this second crane arm 6 and front end crane arm 62 steel rope 8 that hangs down respectively, load onto main suspension hook 21 and secondary suspension hook 22 respectively at the front end of steel rope 8.And the base end part of steel rope 8 extends and is batched by the capstan winch 24 that is located at the first weighing arm 4 cardinal extremity tops along second crane arm 6 and the first weighing arm 4.
Below, be illustrated for the tower crane mode of operation that carries out operation with secondary suspension hook according to Fig. 3.When carrying out the mode of operation of this tower crane, compare with the mode of operation that carries out the common hoisting crane of operation with main suspension hook, if do not set the crane arm rotative speed lower, the circumferential velocity that plays weight when then rotating can produce danger greatly.Therefore, can limit rotative speed in the present embodiment.That is, when selecting the tower crane mode of operation, by transfer valve 31, the oil mass process delivery limiting valve 33 that pump 32 is discharged is sent into rotation motor 34.Like this, just, the rotative speed of may command swivel 3.
In addition, also the pump 32 of Y part among Fig. 3 can be replaced as changeable pump shown in Figure 6 35, utilize 36 pairs of control paths of electromagnetic change-over valve to carry out flow control.Perhaps, also Z among Fig. 3 partly can be replaced as shown in Figure 7, carry out another kind of flow control with the control presssure of control operation valve 38,37 pairs of main control valves of control cock.
On the other hand, as shown in Figure 4, the control system flexible and that rise and fall of the control the first weighing arm 4 and second crane arm 6 is provided with controller 10.In be located at the first weighing arm linear transducer 12 on the first weighing arm 4 and the first weighing arm angular transducer 13 length and angle value to these controller 10 input the first weighing arms 4.In addition, by length and the angle value of the second boom length sensor, 14 second crane arm angular transducers 15 to controller 10 input second crane arm 6, load signal that spreads out of by the pressure sensor 16 of detection load to controller 10 inputs and the signal that spreads out of by rotation speed sensor 19 simultaneously.In addition, the outgoing side of controller 10 is connected with auto-stop mechanism 17.
In control system, be provided with mode of operation A and mode of operation B.This mode of operation A makes the first weighing arm 4 almost be erectility, and make second crane arm 6 freely flexible, rise and fall and the mode of carrying out operation as tower crane.Mode of operation B makes the first weighing arm 4 and the second crane arm 6 shape ground that almost is in line carry out the mode of operation of common crane job.With mode of operation select switch 18 (with reference to Fig. 5), can select mode of operation A, B respectively.More particularly, when carrying out mode of operation A, by controlling above-mentioned oil hydraulic circuit (with reference to Fig. 3), can be low when setting than operation mode B by the rotative speed of the crane arm of swivel 3 decisions.Like this, control the rotation moving velocity of heavy load, can carry out operation safely.
Below, with reference to the diagram of circuit of Fig. 5, the effect of present embodiment is illustrated.When carrying out the tower crane operation,, select mode of operation A with mode of operation select switch 18.When carrying out mode of operation A, the fluctuating angle limits value of the first weighing arm 4 is set at for example 83 ℃～75 ℃, with the fluctuating angle limits value of second crane arm 6 be set at ground-surface angle can not be less than zero degree.And rated load is set at for example less than 1.4 tons.Then, the first weighing arm almost is kept upright behind the state, as shown in Figure 2, makes second crane arm 6, like this, just can use secondary suspension hook 22 to carry out operation to laterally stretching out.After the beginning operation, controller 10 is grasped operation attitude and actual heavy load, the rotative speed etc. of rising according to the signal by each sensor 12～16,19 input.And, these actual heavy loads etc. of rising are compared judgement with the parameter that mode of operation A sets.If one of them surpasses setting value, then, running is stopped to the automatic danger signal of auto-stop mechanism 17 outputs, can carry out operation safely.
In addition, when carrying out common crane job, select mode of operation B by mode of operation select switch 18.When carrying out mode of operation B, the fluctuating angle limits value of second crane arm 6 is maximum upright angle ± α °, and second crane arm 6 can not be less than zero degree with ground-surface angle.At this, α ° is preferably smaller angle, for example about several years.The limitation of length value of second crane arm for example is set at less than 5.5 meters, and rated load is set at for example less than 4.9 tons.Even in operation process actual rise heavy load etc. one of them when surpassing above-mentioned parameter, then to auto-stop mechanism 17 output danger signals and shut down, therefore, can carry out operation safely.
As mentioned above, the present invention can carry out common crane job and tower crane operation with a mobile reach tower crane.Therefore, compare with existing traveling tower crane, scope of work enlarges, and can increase substantially practicality.And, for each mode of operation, can set limits values such as crane arm fluctuating angle, and can the limit measured value during with setting value and operation compare, the limit carries out operation.So, can guarantee safety.
Because the present invention can carry out common crane job and tower crane operation with a mobile reach tower crane, therefore, scope of work enlarges, and increase substantially practicality, and, because each mode of operation has been set various limits values, so, the safety in the time of can guaranteeing operation.The present invention is of great use as mobile reach tower crane.

Claims (4)

1, a kind of mobile reach tower crane, comprise: the front end of the first weighing arm that stretches, freely rises and falls at multistage, can the second flexible crane arm of multistage be set free rough ground, and control with controller, it is characterized in that: on the cardinal extremity crane arm of above-mentioned second crane arm, main suspension hook is set, and, on the front end crane arm of above-mentioned second crane arm, secondary suspension hook is set, on above-mentioned controller, be provided with the mode of operation select switch simultaneously; Utilize this mode of operation select switch, can select any one mode of operation among mode of operation B and the mode of operation A, mode of operation B fixes above-mentioned the first weighing arm and above-mentioned second crane arm shape that is in line, and the mode of carrying out operation with above-mentioned main suspension hook or above-mentioned secondary suspension hook; Mode of operation A makes above-mentioned the first weighing arm almost be erectility, and above-mentioned second crane arm that freely stretches, rises and falls, the mode of carrying out operation with above-mentioned secondary suspension hook.
2, mobile reach tower crane as claimed in claim 1, it is characterized in that, for above-mentioned selected each mode of operation, set fluctuating angle limits value, boom length limits value, rated load and the crane arm rotative speed limits value of above-mentioned the first weighing arm and above-mentioned second crane arm respectively.
3, mobile reach tower crane as claimed in claim 2 is characterized in that, above-mentioned mode of operation A is that crane arm rotative speed limits value is set lowlyer than the crane arm rotative speed limits value of above-mentioned mode of operation B.
4, mobile reach tower crane as claimed in claim 2, it is characterized in that, this hoisting crane has the fluctuating angle that is used to detect the above-mentioned the first weighing arm and second crane arm, boom length, play each sensor of weight weight and crane arm rotative speed, value during operation that above-mentioned controller goes out above-mentioned each sensor and the fluctuating angle limits value of above-mentioned setting, the boom length limits value, rated load and crane arm rotative speed limits value correspondence respectively compare, when the value when one of them above-mentioned detected operation surpasses pairing above-mentioned setting value, above-mentioned controller is exported danger signal to auto-stop mechanism, and the operation running is stopped automatically.
CN94194275A 1993-11-26 1994-11-18 Mobile reach tower crane Expired - Fee Related CN1037425C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP319210/93 1993-11-26
JP5319210A JPH07144884A (en) 1993-11-26 1993-11-26 Mobile reach tower crane

Publications (2)

Publication Number Publication Date
CN1136304A CN1136304A (en) 1996-11-20
CN1037425C true CN1037425C (en) 1998-02-18

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ID=18107642

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94194275A Expired - Fee Related CN1037425C (en) 1993-11-26 1994-11-18 Mobile reach tower crane

Country Status (6)

Country Link
EP (1) EP0731054A4 (en)
JP (1) JPH07144884A (en)
KR (1) KR960705733A (en)
CN (1) CN1037425C (en)
TW (1) TW302016U (en)
WO (1) WO1995014632A1 (en)

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CN110642164A (en) * 2019-07-31 2020-01-03 武汉船用机械有限责任公司 Folding arm telescopic crane

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CN102897674B (en) * 2012-10-11 2014-09-24 中联重科股份有限公司 Method and device for determining hoisting path
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CN105800485B (en) * 2014-12-29 2017-11-21 中联重科股份有限公司 Method, device and system for controlling rotation speed of arm support and engineering machinery
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CN106219422B (en) * 2016-08-09 2018-09-25 太原重型机械集团工程技术研发有限公司 telescopic arm crane
JP6808828B2 (en) * 2016-10-14 2021-01-06 パルフィンガー アクチエンゲゼルシャフトＰａｌｆｉｎｇｅｒ Ａｇ A method for determining the load and a control device for a hydraulic lifting device to carry out such a method.
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Publication number Priority date Publication date Assignee Title
CN110642164A (en) * 2019-07-31 2020-01-03 武汉船用机械有限责任公司 Folding arm telescopic crane
CN110642164B (en) * 2019-07-31 2021-08-10 武汉船用机械有限责任公司 Folding arm telescopic crane

Also Published As

Publication number Publication date
TW302016U (en) 1997-04-01
EP0731054A1 (en) 1996-09-11
CN1136304A (en) 1996-11-20
KR960705733A (en) 1996-11-08
EP0731054A4 (en) 1997-05-28
JPH07144884A (en) 1995-06-06
WO1995014632A1 (en) 1995-06-01

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