Tail end braking system for tower crane slewing
A braking system and slewing braking technology, applied to cranes and other directions, can solve problems such as tripping, safety threats to two tower cranes, voltage fluctuations, etc.
Pending Publication Date: 2021-07-20
YUNNAN FOURTH BRANCH OF THE 14TH METALLURGICAL CONSTR
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Problems solved by technology
However, there are many emergencies on the construction site. For example, when large and medium-sized equipment tower cranes and pile drivers are operating at the same time, voltage fluctuations are common, and tripping due to voltage instability occurs frequently.
The harm caused by sudden power failure is that the hanging objects on the hook of the tower crane cannot be unloaded in time. If there are people or obstacles within the rotation range of the object, it will definitely cause a safety accident
Especially when the construction site is densely populated with towers, the deflection of the hanging object will be entangled and pulled by the hoisting steel ropes of other tower cranes, which poses a huge threat to the safety of the two tower cranes, and the consequences will be serious if they are not handled in time
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[0017] In order to make the present invention be further understood, the present invention will be further described below with reference to accompanying drawing and specific embodiment of description:
[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower" and "horizontal" are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, "first", "second", "third", and "fourth" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.
[0019] In the descripti...
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The invention discloses a tail end braking system for tower crane slewing, and relates to the technical field of safety control of building construction hoisting equipment. The braking system comprises a power supply line A and a power supply line C which are used for being connected with a positive electrode end and a negative electrode end of a tower crane slewing braking circuit, and a rechargeable accumulator connected with the tower crane slewing braking circuit in parallel, wherein a normally-open relay K1 and a switch S1 are connected with the power supply line A in series, a normally-closed relay KM is connected between a static contact of the normally-open relay K1 and a positive electrode end of the rechargeable accumulator, a negative electrode end of the rechargeable accumulator is connected with the power supply line C, the switch S1 is arranged between the static contact of the normally-open relay K1 and a positive electrode of the tower crane slewing braking circuit, and the rechargeable accumulator is connected with a charging circuit. According to the tail end braking system for tower crane slewing, when a tower crane is powered off and cannot stop slewing, a tail end braking switch can be turned on, a slewing brake can be made to act to brake the slewing tower crane, and the tail end braking switch can be automatically turned off in a strong wind environment, so that a tower crane jib is prevented from being damaged by wind power.
Description
technical field [0001] The invention relates to the technical field of safety control of building construction hoisting equipment, in particular to a braking system at the end of a slew of a tower crane. Background technique [0002] Tower cranes usually have two sets of the same rotary mechanical transmission system, which are arranged symmetrically and are composed of motors, hydraulic couplings, disc brakes, planetary gear reducers, rotary pinion gears, rotary large ring gears and other components in sequence. A slewing tower body concentric with the ring gear is connected to the support of the slewing large ring gear, and the slewing tower body is connected with a boom, and the length of the boom is usually more than 50 meters. The hanging object is hung on the hoisting wire and runs along the boom. According to the manufacturer's design principle of "power failure and braking", the function of the disc brake of the slewing mechanism is mainly used to fix the tower arm ...
Claims
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IPC IPC(8): B66C23/88B66C23/62
CPCB66C23/62B66C23/88
Inventor 陈汝宝罗成海赵超段博雄
Owner YUNNAN FOURTH BRANCH OF THE 14TH METALLURGICAL CONSTR