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Locking mechanism, crane boom and autocrane

A technology of locking mechanism and boom, which is applied in the direction of cranes, etc., can solve the problems of the big boom, the extension, the damage of the pulley at the tip of the boom, etc., and achieve the effect of wide industrial value

Active Publication Date: 2020-09-22
SANY AUTOMOBILE HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when a truck crane stops suddenly while driving, due to the inertial effect of the telescopic arm and / or the inertial force on the telescopic arm is greater than the resistance between the telescopic arm and the basic arm and between the oil cylinder, the expansion and contraction will occur. The phenomenon that the joint arm moves forward relative to the basic arm is commonly known as "swinging arm"; especially in the case of emergency high-speed braking, the forward extension will increase, which will cause the auxiliary hook rope wedge to hit the top arm tip pulley and damage the arm tip pulley
If the customer misuses and does not add a hook head to the front end, in severe cases, the boom will jump out and hit the vehicle or obstacle in front, resulting in a safety accident

Method used

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  • Locking mechanism, crane boom and autocrane
  • Locking mechanism, crane boom and autocrane
  • Locking mechanism, crane boom and autocrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 , the locking mechanism of this embodiment is applied to the boom of a truck crane, and includes a mounting base 100 , a connection assembly 200 and an electromagnetic drive assembly 300 .

[0047] The mounting base 100 is welded on the basic arm of the boom; the connecting assembly 200 is rotatably connected with the mounting base 100 through a pin shaft, and the electromagnetic drive assembly 300 drives the connecting assembly 200 to rotate relative to the mounting base 100 through electromagnetic, so as to be connected with the lifting arm The joint arm is connected or disconnected.

[0048] When the jib is in the horizontal position and the truck crane needs to fix the joint arm relative to the basic arm during the travel, the electromagnetic drive assembly 300 drives the connection assembly 200 to rotate to connect with the joint arm, so that the connection assembly 200 is connected The joint arm is fixed relative to the basic arm, and the joint arm i...

Embodiment 2

[0058] This embodiment provides a lifting arm, including the locking mechanism provided in the first embodiment, a basic arm and a plurality of joint arms, and the locking mechanism provided in the first embodiment is installed on the basic arm. The mounting base 100 is welded on the basic arm of the boom; the connecting assembly 200 is rotatably connected with the mounting base 100 through a pin shaft, and the electromagnet 320 is installed on the basic arm of the lifting arm, and the electromagnetic connection base of the connecting assembly 200 is connected through the electromagnetic 230, the stopper 400 is installed on the jib of the boom, and the stopper 400 is connected to or disengaged from the locking part 210 of the connection assembly 200.

[0059] It works as follows:

[0060] When the truck crane is not needed for lifting operations, the hydraulic system of the truck crane is controlled so that the whole boom is in a retracted state and extends along the horizonta...

Embodiment 3

[0063] This embodiment provides a truck crane, including a car body and the jib provided in the second embodiment, and the jib provided in the second embodiment is installed on the car body. The electromagnetic drive assembly 300 is connected with the power supply device of the truck crane.

[0064] During the traveling process of the truck crane, the joint arm is locked to prevent the joint arm from leaping up to ensure the safety of the truck crane; when the boom is working, the joint arm can be unlocked for easy use.

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Abstract

The invention provides a locking mechanism, a crane boom and a autocrane, and relates to the field of autocranes. The locking mechanism comprises an installation seat, a connecting assembly and a electromagnet driving assembly; the installation seat is fixedly installed on a base boom of the crane boom; and the connecting assembly is rotatably connected with the installation seat and the electromagnet driving assembly drives the connecting assembly to rotate relative to the installation seat through electromagnetism to realize connection or removal of the connecting assembly with or from the crane boom. The locking mechanism is arranged on the crane boom, and the crane boom is installed on the autocrane. In the advancing processing of the autocrane, section arms are locked and are prevented from moving, and therefore safety of the autocrane is protected. When the crane boom works, the section arms can be unlocked, so use is convenient.

Description

technical field [0001] The invention relates to the technical field of truck cranes, in particular to a locking mechanism, a lifting arm and a truck crane. Background technique [0002] A truck crane refers to a multi-action truck hoisting machine that lifts vertically and carries heavy objects horizontally within a certain range. The truck crane has a turntable and a jib. When the truck crane is not performing lifting operations, the hydraulic system is controlled to make the boom as a whole shrink and extend in the horizontal direction; when the truck crane is required for lifting operations, the hydraulic system of the truck crane is controlled to make the boom rotate relative to the turntable The lifting arm is lifted to the working position as a whole, and the telescopic arm can be stretched during the lifting process or after being lifted to the working position. [0003] Road driving safety is an important indicator to measure the driving performance of truck cranes....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/88B66C23/687
CPCB66C23/708B66C23/88
Inventor 李鹏举喻露游浩杰
Owner SANY AUTOMOBILE HOISTING MACHINERY
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