Anti-collision limiting device

Abstract

The invention discloses an anti-collision limiting device. The device comprises a contact switch and a buffer, wherein the contact switch is installed on a bottom plate, and the contact switch is provided with a swing part used for triggering the contact switch and enabling the contact switch to generate a contact signal; and the buffer comprises a contact rod, the contact rod is installed on the bottom plate in a sliding mode, the contact rod is connected with an elastic piece used for buffering impact force borne by the contact rod, the contact rod is further connected with a driving piece, the driving piece is provided with a driving face parallel to the sliding direction of the contact rod, one end, close to the swing part, of the driving face is provided with an inverted inclined face smoothly connected with the driving face, after the contact rod is impacted by a moving machine, the contact rod drives the driving part to move synchronously, the driving part extrudes the swing part sequentially through the inverted inclined face and the driving face, and the contact switch generates the contact signal for braking the machine. According to the device, a protection mode of combining the mechanical contact switch and a bumper is adopted, so that the use cost is low, and safety and reliability are realized.

Description

technical field [0001] The invention relates to the technical field of limit devices, in particular to an anti-collision limit device. Background technique [0002] Cranes are the main large-scale lifting equipment on the market at present, and safety protection measures during their operation are essential. The safety protection measures for crane cranes that are common in the market are mainly divided into two levels: the first level of safety protection It is a control switch. The second level of safety protection is the buffer installed at both ends of the crane rail beam; if the first level of safety protection fails, the crane will collide with the buffer with all its strength, which is very prone to production accidents. In order to solve the above problems , those skilled in the art combine the buffer with the control switch in the second level of safety protection to form a closed-loop signal feedback, that is, when the buffer is compressed by an external force, the...

AI Technical Summary

Problems solved by technology

[0002] Cranes are the main large-scale lifting equipment on the market at present, and safety protection measures during their operation are essential. The safety protection measures for crane cranes that are common in the market are mainly divided into two levels: the first level of safety protection It is a control switch. The second level of safety protection is the buffer installed at both ends of the crane rail beam; if the first level of safety protection fails, the crane will collide with the buffer with all its strength, which is very prone to production accidents. In order to solve the above problems , those skilled in the art combine the buffer with the control switch in the second level of safety protection to form a closed-loop signal feedback, that is, when the buffer is compressed by an external force, the control switch will be triggered immediately, and the control switch will generate a contact signal and then feed back to the movement and control its brakes to decelerate to stop, reduce the impact force, facilitate the protection of corresponding equipment, and play a protective role. However, the two structural forms commonly used in the prior art are: the first, buffer and non-contact The photoelectric switch is combined, the circuit control of the photoelectric switch is more complicated, the use cost is high, and the use stability is average, and the safety hazard is relatively large; the second type, the combination of the buffer and the mechanical contact switch, for some emergencies Or when the machine moves faster, the contact switch has been crushed and damaged before the signal generated by the contact switch can be fed back to the moving machine, or the contact signal generated by the contact switch has disappeared before it can be fed back to the moving machine , causing the moving machine to fail to receive the feedback signal so that it hits the buffer with all its strength, which is very easy to damage the buffer and even cause serious production accidents; Hit limit device

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