Counterweight shifting mechanism and crane
A technology of displacement mechanism and positioning mechanism, applied in cranes and other directions, can solve the problems of large external force, insufficient stability of supporting force, and inability to ensure the stability of the whole machine hoisting, and achieve the effect of ensuring the stability of hoisting and improving the stability.
Active Publication Date: 2022-05-31
SANY AUTOMOBILE HOISTING MACHINERY
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Problems solved by technology
[0006] However, in the process of counterweighting, the sliding friction of the guide rail type is relatively large, so the external force required is relatively large, and the guide rail needs to be regularly lubricated for maintenance; while the working principle of the link type counterweight is a four-link structure, the relative stability of its supporting force is insufficient, and the hoisting stability of the whole machine cannot be guaranteed
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[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0039] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...
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The invention relates to the technical field of crane accessories, in particular to a counterweight displacement mechanism and a crane. The counterweight shifting mechanism is used to drive the counterweight to move, including the main frame, the shifting frame, the telescopic mechanism and the first positioning mechanism; the main frame is used to connect with the turntable, and the shifting frame is set on the main frame through the first positioning mechanism; One end of the telescopic mechanism is connected with the shifting frame, and the other end is connected with the turntable; the telescopic mechanism is used to drive the shifting frame to move linearly towards or away from the turntable. The beneficial effect of the embodiment of the present invention is: through the expansion and contraction of the telescopic mechanism, the variable frame is driven to move on the main frame, so as to realize the movement of the counterweight, and the positioning of the variable frame is limited by the first positioning mechanism, so as to improve the stability of the variable frame The stability ensures the hoisting stability of the whole machine.
Description
technical field [0001] The invention relates to the technical field of crane accessories, in particular to a counterweight displacement mechanism and a crane. Background technique [0002] Due to the rapid development of light weight at present, the layout of the whole vehicle is becoming more and more compact, and customers pay more and more attention to the performance and stability of the whole vehicle. However, due to the limitation of the weight of the whole vehicle and the bridge load, the fixed counterweight of the small and medium tonnage products The design of the vehicle is restricted to some extent, and the quality of the on-board counterweight seriously restricts the stability of the whole machine, and the cost of using additional vehicles to transport the combined counterweight is too high, so increasing the distance between the center of gravity of the counterweight and the center of gyration is crucial The stable performance of the whole machine is very import...
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IPC IPC(8): B66C23/76
CPCB66C23/76
Inventor 张敏关文文李博
Owner SANY AUTOMOBILE HOISTING MACHINERY