CN208883327U - A kind of hoisting machinery operation real-time acquisition system of limit state - Google Patents

Abstract

The utility model discloses a kind of hoisting machineries to run the real-time acquisition system of limit state.This acquisition system can collect the limit state of crane in real time.When crane driver operates crane, if hoisting machinery touches any one limit switch, the state of the limit switch can be acquired in real time and be converted into digital signal by system, real-time record storage is carried out for the security monitoring system of hoister of rear end, limit switch for needing warning reminding provides alarm signal output, reminds crane driver concern.

Description

A kind of hoisting machinery operation real-time acquisition system of limit state

Technical field

The utility model relates to a kind of hoisting machineries to run the real-time acquisition system of limit state, belong to engineering monitoring technology neck Domain.

Background technique

In recent years, along with science and technology be constantly progressive and the needs of China's economic development, the infrastructure of various regions Construction is in the stage of rapid development, the carrying of a large amount of materials and handling person --- and hoisting machinery plays extremely heavy wherein The role wanted.Hoisting machinery is wide in variety, type is miscellaneous, using wide, and the occasion used is also complicated, relatively more severe, deposits in use process In various security risks.Large quantities of hoisting machinery active times are longer, and equipment ageing phenomenon is serious, more to hoisting machinery Safe operation has an adverse effect, and safe and healthy performance is faced with huge challenge.

With the continuous popularization of security monitoring system of hoister, crane safety monitor the problem of will gradually be resolved. However during system is realized, the monitoring for limiting state is an important project, if limit status monitoring is not Reliably, the safe condition of hoisting machinery cannot be ensured effectively.It is limited in previous hoisting machinery safety monitoring system The acquisition mode of status signal keeps limiting with former as far as possible often by a set of new limit switch of new clothes at former limit switch Bit switch position is corresponding.When hoisting machinery runs to limit-switch positions, limit safety ruler can touch former limit switch and new The limit switch that installation security monitoring uses makes its trigger action simultaneously.However in actual use, the limit of these new clothes is opened It closes since installation site inaccuracy, welding lead to deformation, tends not to effectively play a role, the limit of What is more new clothes Bit switch will affect the normal operation of former limit switch, is easy to cause safety accident, has biggish security risk.Therefore how More safely and efficiently acquisition crane limits status data, is development the only way which must be passed of security monitoring system of hoister.

Summary of the invention

Technical problems to be solved: it needs to monitor the limit state of crane for security monitoring system of hoister, and shows Some limits what status monitoring was realized often by the scheme for refilling a set of limit switch, has many security risks, this reality It is proposed a kind of hoisting machinery operation limit state for being acquired work using former limit switch system with novel and is acquired in real time System

In order to solve the above technical problems, the utility model uses following technology: in the former limit control circuit of crane In, an intermediate relay is installed, former limit switch signal line is accessed in intermediate relay, then is connected and is believed by intermediate relay Number to crane control system, while drawing on the contact of intermediate relay switch of the signal wire access with digital communication function It measures in data collecting card, the acquisition of crane limit status signal can be realized.

The beneficial effects of the utility model are: not needing to install any part at the former limit switch of crane, installation Workload is small, and less component also can be reduced the security risk of system, and can monitor the limit of hoisting machinery effectively in real time Position state, so that the hoisting machinery safety monitoring system of rear end be made to be read out and the operations such as storage limit status signal.

Detailed description of the invention

Fig. 1 is the connection schematic diagram of this system.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

It mainly include limit switch, the intermediate relay of new clothes, original on former crane in conjunction with Fig. 1, in the utility model Crane control system, switch acquisition card on crane.

In the present invention, just there is relevant limit switch, such as advance limit switch retreats limit on former crane Switch, move to left limit switch etc., these limit switches are directly accessed crane control system on crane, participate in control system Operation.When touching these limit switches in crane operation, the contact movement of limit switch can make crane control system The circuit of system generates corresponding change, and control crane does not continue to run to dangerous direction.The utility model will be originally from limit The electrical connection for switching crane control system disconnects, and limit switch is electrically connected in one intermediate relay of access, limit Bit switch controls intermediate relay movement.One auxiliary contact of intermediate relay is electrically connected to former crane control system, it is real Now function identical with preceding crane control system is transformed.Another auxiliary contact of intermediate relay is connected to switch acquisition Card, switch acquisition card can be obtained the actuation of corresponding intermediate relay or unclamp signal, to be limited accordingly indirectly Switch whether information in place.And crane control system still can receive the control information that limit switch transmits, and realize not While influencing crane control system, the purpose of limit switch signal is collected.

Claims (4)

1. hoisting machinery runs the real-time acquisition system of limit state, it is characterised in that: the system includes limit switch, intermediate relay Device, crane control system, switch acquisition card, limit switch pass through cable connection intermediate relay, make on intermediate relay Crane control system and switch acquisition card are respectively connected to cable.

2. hoisting machinery according to claim 1 runs the real-time acquisition system of limit state, it is characterised in that: the limit Switch directly controls intermediate relay movement by electrical connection access intermediate relay, limit switch.

3. hoisting machinery according to claim 1 runs the real-time acquisition system of limit state, it is characterised in that: the centre A wherein auxiliary contact for relay is electrically connected to crane control system, realizes the function of control system.

4. hoisting machinery according to claim 1 runs the real-time acquisition system of limit state, it is characterised in that: the centre Another auxiliary contact of relay is electrically connected the acquisition that limit switch signal is realized to switch acquisition card.