Safety system for load-lifting machine

FIELD: hoisting and transportation machinery, particularly to control and protect hoisting machines against overload.

SUBSTANCE: system comprises the first control means group installed on support structure or on equipment parts not to be separated from structure. The first control means group includes digital data processing unit 2 having output connected to executive and signaling device 4, 5 units, the first data input-output unit 3 linked to digital data processing unit with two-directional data exchange channel, crane 6 parameter sensors and power supply unit 1. Power supply unit 1 has one clamp connected to load-lifting machine body and another clamp secured to power supply system bus. The second control means group is supported by movable structure or equipment to be demounted and includes crane parameter sensors 10. The first and the second control means groups are linked one to another through two-directional radioline. The first control means group is provided with the first receiving/transmitting radio station, independent power source 15 and switchboard 16.

EFFECT: increased safety system reliability, simplified assemblage and installation thereof on load-lifting machine.

1 dwg

 

The invention relates to hoisting and transport machinery and can be used in control systems and protection from overload and damage to the lifting machinery, in particular jib cranes with telescopic boom.

You know the security device of the crane boom type containing the sensor length and boom angle, the angle of rotation of the platform, the height of the lifting hook and the electromagnetic field and the control unit, thereby protecting the valve from collisions with obstacles, including power lines (see RF patent №2070162, VS 23/90, 10.12.1996). The disadvantage of this device that implements the protection of the crane on the position of the crane equipment is the complexity of the transmission signal on the movable (retractable) section boom. Even more difficult to provide reliable protection occur on lifting machines with interchangeable equipment, which is located several blocks (mainly sensors)included in the device.

Also known safety system lifting crane with a telescopic boom that contains separate modules security representing electronic components and sensors on newidiadau and raised the boom sections, connected by a cable drum (see RF patent №2232709, VS 13/18, 23/88, 0.07.2004). The use of this system multiplex communication lines for information exchange between the individual modules of the system can significantly reduce the number of connecting wires between the modules of the system and improve the reliability of the whole system. However, for transmitting signals between the blocks that are on newidiadau and raised parts of the design, still requires the use of a rotating collector devices and special cables that does not resolve fully failures due to loss of contact in the collector devices and the need to use expensive materials.

Closest to the claimed invention, the essential features is the security of the hoisting machine, containing the first group of tools and control, installed on a supporting structure or on adamantium parts of the equipment, including a digital data processing unit, the output of which is connected blocks of the Executive and signal devices, the first block I / o information, coupled with the digital data processing unit two-way channel of communication, sensors parameters of the crane and the power supply, one terminal of which is connected to the housing of the lifting machine, and the other terminal - bus power system, and a second set of controls and the Board installed on the movable structure or replaceable (removable) equipment, including sensors parameters of the crane, and a wired communication line between these groups (see the patent for useful model №38747, VS 23/90, 05.04.2004). In the known system, the relationship between groups of controls and control is carried out using a multiplex channel of communication connecting the information input digital data processing unit with the second sensor module parameters of the crane mounted on the raised section of the jib. The application in this system, a multiplex channel of data exchange also reduces the number of interconnections between the blocks of the system. However, this security system has the same drawbacks as described above.

Task to be solved by the claimed invention is directed, is to develop a security hoisting machine, which would provide increased reliability of the transmission of commands to the devices that are installed on movable or removable parts of equipment, and receive from them information signals without the use of expensive cables and current collector.

A technical problem is achieved by the fact that security hoisting machine containing the first group of tools and control installed on the reference design is the construction or adamantium parts of the equipment, includes a digital data processing unit, the output of which is connected blocks of the Executive and signal devices, the first block I / o information, coupled with the digital data processing unit two-way channel of communication, sensors parameters of the crane and the power supply, one terminal of which is connected to the housing of the lifting machine, and the other terminal - bus power system, the second group of controls and control installed on the movable structure or replaceable (removable) equipment, including sensors parameters of the crane, and the line of communication between these groups, according to the invention the first and the second group of funds control and management are interconnected via two-way radio while the first group is equipped with the first radio transceiver, and the second group have a second block I / o information, the second receiving-transmitting station, a standalone power source and the switch in the first group the transmitter input and receiver output of the first radio stations respectively connected to the speaker output and the speaker input of the first block I / o information to the information input of which is connected sensors parameters of the crane, and in the second group the transmitter input and receiver output second radio connection is HN respectively to the speaker output and the speaker input of the second unit I / o information to the information input of which is connected the output of the second sensor unit parameters of the crane, outputs a standalone power source connected to the power bus of the second block I / o information of the receiver of the second transceiver switch, one of the outputs of the switch is connected to the power bus of the second transmitter station, and the other outputs of the switch connected to the control inputs of the second sensor module parameters of the crane.

Equipment security system of the receiving / transmitting stations and Autonomous power supply provides a wireless, two-way communication between the group means and control installed on the supporting structure of the lifting machine, such as the platform of the crane, or adamantium parts of the equipment, and a group of tools that are installed on the movable structure, for example, put forward section of the boom, or replaceable (removable) equipment, which increases the reliability of this system and facilitates its mounting on the lifting machine and the equipment system switch and the second block I / o information extends the life of the auxiliary power supply and reduces the cost of system maintenance security as a stand-alone power source permanently connected only to the receiver of the second radio station and the second block I / o the information and the power of the second transmitter comes only in command for switching the switch in the form of a coded sequence of pulses from the digital data processing unit.

The drawing shows a functional diagram of the proposed system security hoisting machines.

Security system hoisting machine, in particular crane boom type with telescopic boom, contains the first group of tools and control installed on the platform of the crane, and the second group of controls and control installed on the raised section of the boom.

The first group controls and management is established on the platform of the crane are the unit 1 power supply, digital block 2 data, the first block 3 I / o information, block 4 actuators, block 5 output devices, the group of sensors 6 parameters of the crane and the first transmitting and receiving station comprising a first transmitter 7, the first antenna unit 8 and the first receiver 9.

The second group of controls and control installed on the raised section of the boom includes a second group of sensors 10 parameters of the crane, the second block 11 I / o information, the second transmitting and receiving station including a second transmitter 12, the second antenna unit 13 and the second receiver 14, avtonomna the second power source 15 and the switch 16.

In the first group of control means and the first control unit 3 I / o information connected two-way channel for the exchange of digital data block 2 data to outputs of which are connected to the inputs of block 4 actuators and block 5 alarm devices. The input of the first transmitter 7 of the first station is connected to the speaker output of the first block 3 I / o information, and the output to the input of the first antenna unit 8. The input of the first receiver 9 of the first station is connected to the output of the first antenna unit 8, and the output to the speaker input of the first block 3 I / o information to the information input of which is connected to the outputs of the sensors 6 parameters of the crane. One terminal block, 1 power supply connected to the valve body and the other with the power bus system.

The second group controls and the control input of the second receiver 14 of the second radio station is connected to the output of the second antenna unit 13 and the output to the speaker input of the second unit 11 I / o information to the information input of which is connected to the outputs of the sensors 10 parameters of the crane. The input of the second transmitter 12 second station connected to the speaker output of the second unit 11 of the input-output information and the output to the input of the second antenna unit 13.

To provide the second control means and is driven by the I system is equipped with independent source 15 power in the form of a battery or accumulator. Outputs a standalone power source connected to the power bus of the second unit 11 I / o information of the second receiver 14 and the switch 16. One of the outputs of the switch is connected to the power bus of the second transmitter 12 of the second radio station, and other outputs of the switch connected to the control inputs of the sensors 10 parameters of the crane. This allows to minimize the energy consumption, as an Autonomous power supply is permanently connected only to the second receiver 14 and the block 11 I / o information. Control inputs of the sensors 10 parameters of the crane can be individual power bus or special inputs sensor connection.

In the proposed system, the blocks are made as follows.

Digital block 2 data represents a PIC processor with a standard set of elements, which includes analog-to-digital Converter (ADC), a multiplexer, a random access memory (RAM), programmable permanent memory (EPROM, parallel and serial ports.

Blocks 3 and 11 input-output data are means for the reception, conversion information of the sensor parameters of the crane and information transmission in sequential code.

The antenna units 8 and 13 may contain amplifiers and are active antenna. Transmitting and receiving station which may be in the form of radio, representing FSK transceiver (e.g., integrated single-chip transceiver GE)providing a bi-directional half-duplex communication with fast frequency hopping and NRZ encoding.

The switch 16 is a shift register.

The sensor parameters of the crane contain the sensor length of the boom, the sensor boom angle, force sensor (or pressure) in the lifting mechanism of the boom, the angle sensor platforms, sensor elevation of the hook, etc. Sensors can be both analog and digital. When using analog sensors they are connected to the analog-to-digital converters.

The system works as follows.

Digital block 2 data produces sensors 6, locking their readings in RAM, then through the block 3 I / o information sends a coded sequence of pulses in the transmitter 7, modulating electrical oscillations emitted by the first antenna unit 8.

Electromagnetic waves radiated by the first antenna unit 8, accepted the second antenna unit 13, causing the second receiver 14 is allocated sent a sequence of pulses, which is the second block 11 I / o information easy to be interpreted as a command for switching the switch 16, the connection of the second transmitter 12 and determine the i.i.d. sensor 10, receiving information of the second sensor unit 11 I / o data and transmission by the second transmitter 12 and the second antenna unit 13 of the information by radio communication at the first antenna unit 8 and then into the RAM of the digital block 2 data.

This is followed by similar similar operations to survey the rest of the sensors 10, then at the time of survey sensors 6 and processing the sensor 10 and the second transmitter 12 is transferred to the standby mode (off, energy consumption).

The proposed security system hoisting machine can be manufactured industrially by the instrument-making enterprise with the use of modern electronic components and technology. To implement digital transmitter, you can use the MSP430F149 microprocessor firm Texas Instruments (USA) or other microprocessors of this type. As sensors for registration of parameters of the crane may be used commercially available products Arzamas instrument plant, such as analog sensors movements of LLLI. 401221.004, LLLI. 401221.006, LLLI. 401221.008 and their execution, or new development of digital sensors, in particular the force sensor digital DOC LLLI. 404176.013, and similar equipment other instrument factories.

Specialist in the art should be obvious that this is the invention there are a variety of modifications and changes. Accordingly, it is assumed that the present invention covers these modifications and changes, and equivalents without departure from the essence and scope of the invention disclosed in the accompanying claims.

Security system hoisting machine containing the first group of tools and control, installed on a supporting structure or on a non-removable parts of equipment, including a digital data processing unit, the output of which is connected blocks of the Executive and signal devices, the first block I / o information, coupled with the digital data processing unit two-way channel of communication, sensors parameters of the crane and the power supply, one terminal of which is connected to the housing of the lifting machine, and the other terminal - bus power system, the second group of controls and control installed on the movable structure or dismantled equipment, includes sensors parameters of the crane, and the line of communication between these groups, characterized in that the first and second groups of controls and management are interconnected by means of two-way radio while the first group is equipped with the first receiving-transmitting station, and the second group have a second block I / o information, the second receiving-pen is giving a radio station, Autonomous power source and the switch in the first group the transmitter input and receiver output of the first radio stations respectively connected to the speaker output and the speaker input of the first block I / o information to the information input of which is connected sensors parameters of the crane, and in the second group the transmitter input and receiver output second stations respectively connected to the speaker output and the speaker input of the second block I / o information to the information input of which is connected the output of the second sensor unit parameters of the crane, outputs a standalone power source connected to the power bus of the second block I / o information of the receiver of the second transceiver switch, one of the outputs of the switch is connected to the power bus of the second transmitter station, and the other outputs of the switch connected to the control inputs of the second sensor module parameters of the crane.



 

Same patents:

FIELD: mechanical engineering; lifting and transportation equipment.

SUBSTANCE: invention relates to protection devices for load-lifting machines used in construction engineering. According to proposed method, by successive polling of signals of first complex of pickups by data processing base unit and by transmitting of commands through drum with current carrying ring to controller of extendable part for connection of technical devices and receiving information from second complex of pickups, drives of load-lifting machine mechanisms are switched off when actual characteristics exceed tolerable values. Provision is made for connecting current-carrying ring of drum through marker light switch of one terminal of supply source whose second terminal is connected with metal structure of load-lifting machine.

EFFECT: enlarged functional capabilities of load-lifting machine, provision of convenient and reliable transmission of commands for selective connection of devices arranged on extendable part and reception of information from pickups arranged on said part.

7 cl, 2 dwg

FIELD: mechanical engineering.

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FIELD: mechanical engineering; tower cranes.

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EFFECT: reduced duration and cost of adjustment of overload safeguards.

11 cl, 2 dwg

FIELD: mechanical engineering; load-lifting machinery; safeguards.

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FIELD: materials handling facilities.

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15 cl, 1 dwg

FIELD: equipment for controlling and protection of load-lifting mechanisms from overloads and damage.

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The invention relates to a lifting-transport equipment

The invention relates to a lifting-transport equipment

FIELD: mechanical engineering.

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16 cl, 2 dwg

FIELD: mechanical engineering; materials handling facilities.

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2 dwg

FIELD: mechanical engineering: materials handling facilities.

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8 cl, 4 dwg

FIELD: mechanical engineering; load-lifting and transporting facilities.

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EFFECT: improved reliability.

4 cl, 1 dwg

FIELD: mechanical engineering; load-lifting cranes.

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EFFECT: simplified servicing, improved reliability, provision of serviceability of safety system at cut off supply.

23 cl, 1 dwg

FIELD: materials handling equipment; load-lifting cranes.

SUBSTANCE: invention is designed to automatically control load-lifting crane and protect crane and load from collision with obstacles at preset capacity. According to proposed method, starting and stopping of drives of mechanisms providing movement of crane equipment is done by action onto crane controls, and disconnection of mechanism drives is carried out by processing of signals from pickups to limit motion or preclude over-load. To reduced level of load swinging, wire rope length pickup and tackle block ratio selector pickup are installed additionally whose signals are used to determine height of load hanging and period of swinging of suspended load. Moments to switch off and switch on crane drive mechanisms are calculated by signals from pickups checking position of crane movable equipment, inertia indices of equipment, actual speeds and accelerations of equipment and starting and disconnection of drives. Crane mechanism drives control mode is created at which killing of oscillations of load both at beginning and stopping of load movement is provided. Device contains travel motion control unit, amplified unit, pickups, load limiting unit, travel limiting unit, load hanging height check unit, suspended load swinging period check unit and crane actuators.

EFFECT: improved reliability of crane in operation.

3 cl, 1 dwg

FIELD: materials handling facilities; crane safeguards.

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EFFECT: simplified mounting and servicing of safeguards on crane, improved accuracy of realization of protection functions.

18 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed system contains parameters recorder of load-lifting machine, computer and portable readout device with non-volatile memory. Parameters recorder includes load-lifting machine parameters transducers, digital calculator and memory connected to digital calculator, load-lifting machine operating parameters transducers being connected to digital calculator. Portable readout device is made in form of video camera or smartphone or cellular telephone with built-in video camera which is furnished with non-volatile memory and is made for connection to digital calculator of load-lifting machine parameters recorder and to computer. Computer is made for reading data of parameters recorder from portable readout device and subsequent processing of data, and for entering into non-volatile memory image of position of mechanisms of load-lifting machine, and/or its working zone, and/or for transmission of data of load-lifting machine parameters recorder into computer along cellular communication circuit.

EFFECT: enlarged functional capabilities of recording of load-lifting machine parameters, facilitated serving of machine, increased reliability and dependability of recording of load-lifting machine parameters.

20 cl, 1 dwg

FIELD: mechanical engineering; load-lifting cranes.

SUBSTANCE: invention relates to overload and damage protection of load-lifting cranes. According to proposed method, to prevent emergencies preliminarily determined are tolerable values of parameters characterizing load, and/or spatial position of crane boom and/or load gripping member which are memorized and, in process of operation of crane, one of said parameters is measured and compared with tolerable value, and signals are formed to control crane actuators aimed at preventing excess of tolerable value by measured parameter. Determination of parameters characterizing spatial position of boom, load-gripping member, supports, construction members of other crane or any obstacle in height is based on measuring values of barometric pressure in corresponding points and subsequent calculation of heights. Construction is simplifier, and effective protection of spatial position pickups of crane from mechanical damages if provided. Safety of load-lifting crane in operation is improved owing to accurate and effective measuring of distance between crane and obstacles and prevention of emergencies caused by tilting of fixed platform or portal of crane from horizontal position and in case of approaching thunderstorm.

EFFECT: improved safety of load-lifting crane.

25 cl, 1 dwg

FIELD: materials loading machinery.

SUBSTANCE: invention relates to load-lifting crane protection and control devices and to method of crane control after interlocking of crane motion by protection system. proposed method consists n determining tolerable values of parameters characterizing load and/or spatial position of crane boom-or load-gripping member, and/or distance to transmission line, recording the parameters and measuring in process of operation of load-lifting crane by direct or indirect method of at least of one of said parameters and comparing measured value with tolerable one and subsequent forming of control signals by at least one of operating devices of load-lifting crane designed to preclude excess of tolerable value by said parameter. Additionally, by analyzing values and/or changes of parameters of operation of load-lifting crane, prehistory of operation of load-lifting crane is revealed and recorded which leads to forming of said control signals aimed at precluding excess of tolerable value by said parameter, and order of formation of control signals after prevention of said excess is set depending on indicated prehistory.

EFFECT: improved safety of operation of load-lifting crane and provision of convenience in operation.

16 cl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to safety and control systems of load lifting cranes. Proposed method of supply of measuring and control component part of safety and control system arranged on boom or tackle block of load-lifting crane comes to use of self-contained supply source with automatic charging the source from generator - converter of mechanical energy of moving load or boom wire rope of load-lifting crane or block directing or supporting the wire, rope, into electric energy. According to invention, said component part of safety and control system of crane provides measuring of at least one operating parameter and control of loads, particularly, marker light and/or headlight. To charge self-contained supply source, in additional of wire rope motion energy, use can be made of energy of external mechanical actions, solar energy or heat energy of surrounding medium. Transmission of data between component parts of system can be provided by wireless data exchange channel.

EFFECT: facilitated maintenance, increased reliability, provision of serviceability of safety and control system of crane.

16 cl, 2 dwg

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