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

Definitions

• the present invention relates to a mobile refill work lane, and more particularly, to a mobile refill work lane having improved versatility as a crane. Background technology
• a crane car with a telescopic second boom provided at the end of the telescopic first boom has the first boom almost upright, and the second boom can be extended and retracted. And work as a work lane.
• the present invention has been made in order to solve the disadvantages of the related art, and has a main hook and a catch hook so that normal crane work and work as a work lane can be performed.
• the purpose is to provide a highly versatile mobile reacher work lane whose turning speed can be changed according to the work.
• the mobile reacher work lane according to the present invention is characterized in that a main hook is provided on a base boom of a second boom, and a catch hook is provided on a tip boom of the second boom. Further, the controller has a work mode selection switch, and the work mode selection switch fixes the first boom and the second boom in a straight line so that the main hook or the catcher is fixed. Work mode B in which the first boom is almost upright and the second boom can be freely extended and retracted to work with the catch hook. It is possible to select, and for each of the selected work modes, the starting angle limit, length limit, rated load, and boom swing speed limit of the first and second booms may be set.
• the boom swing speed limit setting of the work mode A may be a set value that is slower than the boom swing speed limit setting of the work mode B.
• the controller outputs a stop signal to the automatic stop mechanism to automatically stop the work operation when the erection angle, boom length, hanging load, and boom swing speed during work exceed the set values. It may be.
• the work using the main hook and the auxiliary hook which are the ordinary crane operations, and the tower crane operation can be performed, so that the versatility is improved.
• the starting angle limit, boom length limit, rated load, boom swing speed, etc. can be set for each work mode. Since the operation is stopped, work can be performed safely without worrying about the operation mode.
• FIG. 1 is a side view of a mobile reach tower crane in a working mode B according to an embodiment of the present invention.
• Fig. 2 is a side view of the mobile reach tower crane in the working mode A according to the embodiment.
• Fig. 3 is a hydraulic circuit diagram of a main part in which a boom swing speed can be selected for each working mode according to the embodiment.
• FIG. 4 is a block diagram showing a control system of the mobile reacher work lane according to the embodiment
• FIG. 5 is a flowchart showing the operation of the mobile reacher crane according to the embodiment
• FIG. In the meantime, the partial hydraulic circuit diagram when replacing the pump in section Y with a variable pump in Fig. 3
• FIG. 7 relates to the embodiment, and the pilot pressure control of the main control valve in section Z in Fig. 3
• FIG. 4 is a partial hydraulic circuit diagram when control is replaced with another control.
• a body 1 movable by wheels 2 is provided with a revolving body 3 that is revolvably provided.
• the revolving body 3 is provided with a first boom 4 and a driver's cab 5.
• the first boom 4 is composed of a multi-stage boom that expands and contracts in a plurality of stages.
• the base end of the first boom 4 is pivotally connected to the revolving unit 3, and can be freely raised by the boom cylinder 23.
• the base end of the second boom 6 is pivotally connected to the front end of the first boom 4.
• the second boom 6 is also composed of a multistage boom that expands and contracts in a plurality of stages.
• the end of the second boom 6 can be freely raised by a boom cylinder 7.
• the wires 8 are respectively hung, and a main hook 21 and a catch hook 22 are respectively attached to the ends of the wires 8.
• the proximal end of the wire 8 extends along the second boom 6 and the first boom 4, and is wound by a winch 24 installed on the upper end of the first boom 4.
• the turning speed can be limited. That is, when the tower crane work mode is selected, the switching valve 31 sends the amount of oil discharged from the pump 32 to the swing motor 34 via the flow rate limiting valve 33. Thereby, the revolving speed of the revolving superstructure 3 can be restricted.
• the pump 32 shown at Y in FIG. 3 is replaced with the possible pump 35 shown in FIG.
• the flow rate of the pilot line may be controlled by the electromagnetic switching valve 36.
• the part indicated as Z in Fig. 3 is replaced as shown in Fig. 7, and the pilot pressure of the main control valve is separately controlled by the pilot operation valve 38 and the control valve 37. It may be controlled.
• the control system for controlling the expansion / contraction of the first boom 4 and the second boom 6 has a controller 10.
• the length and angle of the first boom 4 are input to the controller 10 from the first boom length sensor 12 and the first boom angle sensor 13 provided on the first boom 4.
• the controller 10 receives the length and angle of the second boom 6 from the second boom length sensor 14 and the second boom angle sensor 15 and a pressure sensor 16 for detecting a load. And a signal from the swing speed sensor 19 are input.
• an automatic stop mechanism 17 is connected to the output side of the controller 10.
• Work mode A and work mode B are set in the control system.
• This work mode A is a mode in which the first boom 4 is almost upright, and the second boom 6 is extended and retracted so that the work can be freely performed as an evening work lane.
• the work mode B is a work mode in which the first crane 4 and the second boom 6 are strong and are almost in a straight line, and normal crane work is performed.
• These work modes A and B can be selected by the work mode selection switch 18 (see Fig. 5). More specifically, in the operation mode A, the speed of the boom swing by the revolving unit 3 can be set slower than that in the operation mode B by controlling the hydraulic circuit (see FIG. 3) described above. ing. As a result, the swinging speed of the suspended load is controlled, and work safety is improved.
• the elevation angle limit of the first boom 4 is set, for example, to 83 ° to 75 °, and the elevation angle limit of the second boom 6 prohibits the ground angle from becoming negative. It is set as follows.
• the rated load table is set to, for example, 1.4 tons or less. Then, after holding the first boom 4 in an almost upright state, as shown in FIG. By extending the boom 6 in the lateral direction, it is possible to work using the catch hook 22.
• the controller 10 grasps the work posture, the actual suspension load, the turning speed, and the like based on the signals input from the sensors 12 to 16 and 19. Then, the actual hanging load and the like are compared with the parameters set in the operation mode A and determined. If any one exceeds the set value, an automatic stop signal is output to the automatic stop mechanism 17 to stop the operation, and the operation can be performed safely.
• the work mode B is selected by the work mode selection switch 18.
• the angle of the second boom 6 is limited to the maximum raised angle soil. It also prohibits negative ground angles.
• ⁇ ° is preferably a small angle, for example, about several degrees.
• the length limit of the second boom 6 is set to, for example, 5.5 m or less, and the rated load table is set to, for example, 4.9 tons or less. If the actual suspended load during work exceeds any of the above parameters, a stop signal is output to the automatic stop mechanism 17 to stop the operation, and safe work is possible.
• the present invention can perform normal crane work and task work lane work with one mobile reacher work lane. This greatly increases versatility as the work area is expanded compared to conventional mobile task lanes. In addition, it is possible to set predetermined limits such as the boom undulation angle for each work mode, and work is performed while being compared with the measured values during work, thus ensuring safety.
• the work range is expanded, the versatility is greatly improved, and the work is performed by setting various restrictions for each work mode. It is useful as a mobile re-worker lane that can ensure safety at the time.

Landscapes

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

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=18107642

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (18)

Citations (4)

Family Cites Families (4)

• 1993
  • 1993-11-26 JP JP5319210A patent/JPH07144884A/ja active Pending
• 1994
  • 1994-11-18 KR KR1019960702693A patent/KR960705733A/ko active IP Right Grant
  • 1994-11-18 CN CN94194275A patent/CN1037425C/zh not_active Expired - Fee Related
  • 1994-11-18 EP EP95900915A patent/EP0731054A4/en not_active Withdrawn
  • 1994-11-18 WO PCT/JP1994/001948 patent/WO1995014632A1/ja not_active Application Discontinuation
  • 1994-11-19 TW TW085213735U patent/TW302016U/zh unknown

Patent Citations (4)

Non-Patent Citations (1)

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