CN216737332U

CN216737332U - Intelligent alarm system for preventing tower crane lifting hook from rushing to top

Info

Publication number: CN216737332U
Application number: CN202123016188.3U
Authority: CN
Inventors: 郑爱伟; 李光如
Original assignee: Shanghai Jinyu Machinery Co ltd
Current assignee: Shanghai Jinyu Machinery Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-06-14
Anticipated expiration: 2031-11-30

Abstract

The utility model provides an intelligent alarm system for preventing a tower crane hook from rushing to top, which relates to the control field of preventing the tower crane hook from rushing to top, and comprises an encoder and a host; the encoder is connected with the height limiter and fixed on the height limiter, and the encoder is electrically connected with the host; the host is electrically connected with the lifting control loop. The utility model has the advantages of reasonable structure, simple to operate, simple to use have increased the safeguard measure that one prevention tower crane lifting hook dashes the top, have solved the problem that is unperceived after traditional high stopper became invalid, and this system still has and cuts off the lifting hook and plays to rise control circuit function, guarantees when high stopper became invalid that the lifting hook stops rising, effectively avoids taking place the tower crane lifting hook and dashes the accident of pushing up.

Description

Intelligent alarm system for preventing tower crane lifting hook from rushing to top

Technical Field

The utility model relates to a prevention tower crane lifting hook dashes control field on top, especially relates to an intelligent alarm system that prevention tower crane lifting hook dashes top.

Background

In the hoisting process of the tower crane in the construction site, a lifting hook is frequently subjected to a top impact accident, a steel wire rope is damaged if the lifting hook is light, the steel wire rope is broken if the lifting hook is heavy, and the lifting hook falls from the high altitude, so that casualties and property loss are caused.

At present, the device for preventing the lifting hook from rushing to the top in a tower crane production plant is mainly a height limiter, and the working principle of the height limiter is that a lifting control loop is disconnected through a travel switch, so that a lifting loop of a winch is disconnected, the winch brakes immediately, and the lifting hook stops rising, thereby realizing the function of preventing the lifting hook from rushing to the top. The height limiter is connected with a steel wire rope winding drum mechanism of the winch through a transmission shaft; the height limiter drives a plastic gear set inside the height limiter to move through a transmission shaft, the gear set controls a cam shaft, a plastic cam is fixed on the cam shaft and rotates along with the cam shaft, an upper limit switch for controlling the lifting of the lifting hook is arranged inside the height limiter, the upper limit switch is normally closed and is connected in series with a lifting control loop, a plastic wheel is arranged at the head of the upper limit switch and presses on the cam shaft, and the cam shaft, the cam and the upper limit switch form a travel switch of the height limiter together.

The motion direction and the height of the lifting hook correspond to the rotation direction and the angle of a cam shaft of the height limiter, the height limiter needs to be calibrated after the hoisting tower is installed, when the lifting hook is lifted to a set height, a cam pushes open a wheel of an upper limit switch, the upper limit switch is disconnected with a lifting control loop, a winch lifting loop is disconnected, the winch is immediately braked, and the lifting hook stops lifting.

The existing height limiter has the following defects:

1. the mounting position has large vibration and high vibration frequency, and the joint is easy to loosen and lose efficacy;

2. plastic parts such as gears and cams are prone to aging and failure, and the plastic parts cannot be found in time after failure.

In addition, the equipment that the lifting hook of tower crane manufacturing plant prevention was dashed the top still measures the distance between lifting hook and the jib loading boom through laser radar sensor to show the lifting hook distance, realize the function that the prevention lifting hook dashed the top.

The existing laser radar sensor has the following defects:

1. the laser radar sensor is powered by a lithium battery, and the tower crane trolley needs to be retracted to a fixed position for charging in the absence of electricity.

2. The cost is higher relatively, and laser radar sensor fixed bolster needs the corresponding structure preparation according to the tower crane, and different tower crane structure needs the different fixed bolster of preparation.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a prevention tower crane lifting hook is towards intelligent alarm system on top has solved the problem that traditional high stopper became invalid and can not in time discover, has also solved the sensor power supply that laser radar sensor exists not enough, the cost is higher relatively and the loaded down with trivial details problem of fixed bolster preparation.

In order to achieve the above objects and other related objects, the present invention provides an intelligent alarm system for preventing a tower crane hook from lifting, wherein the intelligent alarm system comprises an encoder and a host; the encoder is connected with the height limiter and fixed on the height limiter, and the encoder is electrically connected with the host; the host is electrically connected with the lifting control loop.

In an embodiment of the present invention, the host is disposed in the cab.

In an embodiment of the present invention, the encoder includes a connection sleeve, an encoder fixing bracket, and an encoder cable; the encoder is connected with the height limiter through a connecting sleeve and fixed on the height limiter through an encoder fixing support, and the encoder is electrically connected with the host through an encoder cable.

In an embodiment of the utility model, the host computer includes the shell, sets up in the outside touch display screen of shell and speaker, sets up in the inside mainboard and the power module of shell, be provided with encoder signal processing circuit and control circuit on the mainboard.

In an embodiment of the present invention, the control circuit is electrically connected to the lifting control circuit through the control cable.

In an embodiment of the present invention, a storage unit is disposed on the main board, and the storage unit is electrically connected to the encoder signal processing circuit.

As above, the utility model discloses a prevention tower crane lifting hook dashes intelligent alarm system who pushes up has following beneficial effect:

1. a lifting hook anti-top-collision protection measure is added;

2. the tower crane has a fault alarm function, and tower crane equipment is guaranteed to be repaired in time;

3. the voice early warning function is achieved, and a tower crane driver can take preventive measures in time;

4. a lifting control loop of the lifting hook can be cut off, and the danger of top rushing caused by the carelessness of a driver is avoided;

5. the structure is simple, and the installation and maintenance are convenient;

6. possess the data storage function, the lifting hook operating condition can all be known at any time to the relevant person of being responsible.

Drawings

Fig. 1 shows that the embodiment of the utility model provides an in the intelligent alarm system's that prevention tower crane lifting hook dashes top hardware installation schematic diagram.

Fig. 2 shows that the embodiment of the utility model provides an in the intelligent alarm system of the prevention tower crane lifting hook towards top host computer and the hardware connection schematic diagram of encoder.

Fig. 3 shows as the embodiment of the utility model provides an in the embodiment disclosed prevent tower crane lifting hook towards the hardware architecture schematic diagram of host computer among the intelligent alarm system of top.

Description of the element reference

1-a hook; 2-a crane boom; 3-a cab; 4-a host; 5-an encoder; 6-a transmission shaft; 7-a height limiter; 8-a wire rope drum mechanism; 12-a loudspeaker; 13-a power line; 14-a control cable; 15-an encoder cable; 16-a connection sleeve; 21-a housing; 22-touch display screen; 23-a main board; 24-a power supply module; 25-encoder signal processing circuitry; 26-a control circuit; 27-memory cell.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 3. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example one

The utility model provides an intelligent alarm system for preventing a tower crane hook from rushing to the top, please refer to fig. 1-3, and the intelligent alarm system comprises an encoder 5 and a host 4; the encoder 5 is connected with the height limiter 7 and fixed on the height limiter 7, and the encoder 5 is electrically connected with the host 4; the main machine 4 is electrically connected with a lifting control loop.

Specifically, the encoder 5 comprises a connecting sleeve 16, an encoder fixing bracket and an encoder cable 15; the encoder 4 is connected with the encoder shaft and the transmission shaft 6 of the height limiter 7 through the connecting sleeve 16 and fixed on the height limiter 7 through the encoder fixing support, the encoder 5 is electrically connected with the host machine 4 through the encoder cable 15, the host machine 4 is arranged in the cab 3, and the height limiter 7 is arranged at the position of the steel wire rope winding drum mechanism 8 of the winch.

Specifically, the host 4 includes a housing 21, a touch display screen 22 and a speaker 12 disposed outside the housing 21, and a motherboard 23 and a power module 24 disposed inside the housing 21, wherein the motherboard 23 is provided with an encoder signal processing circuit 25, a control circuit 26, and a storage unit 27; the control circuit 26 is electrically connected with the lifting control loop through the control cable 14; the encoder signal processing circuit 25 may be a logic control element such as a PLC controller or a single chip microcomputer, and the control single path 26 may be an electronic switch; the touch display screen 22 is used for displaying the current distance of the lifting hook 1, the height of the tower crane, an early warning state, an alarming state, a fault state, a parameter setting entry button, clock display and the like; the loudspeaker 12 is used for sending out a corresponding alarm voice prompt; the control circuit 26 is normally closed and is open when alarming.

The utility model discloses a work flow as follows:

s1: the encoder 5 outputs the signal collected by the height limiter 7 to the host 4;

s2: the host 4 receives the signal, performs alarm operation and alarm judgment on the signal through the encoder signal processing circuit 25, generates an alarm control instruction, and outputs corresponding alarm data to the touch display screen 22, the loudspeaker 12, the control circuit 26 and the storage unit 27;

s3: the corresponding data is stored by the storage unit 27.

Specifically, after the encoder signal processing circuit 25 processes the signal, the corresponding alarm data is output to the touch display screen 22, the loudspeaker 12 and the control circuit 26, the alarm data is displayed through the touch display screen 22, the alarm is reminded through the loudspeaker 12, and the lifting control loop is controlled through the control circuit 26.

In specific use, it is assumed that a lifting hook 1 of one tower crane is 2 meters away from the lower edge of a crane boom 2 at an upper limit (stop position), and when the lifting hook 1 is lowered to the ground, the distance between the lifting hook 1 and the crane boom 2 is 40 meters. The installer receives 1 supreme spacingly with the lifting hook of tower crane, fix host computer 4 in 3 driver left side place ahead positions in driver's cabin, be connected encoder 5 with adapter sleeve 16 and the transmission shaft 6 of height limiter 7 and fix, encoder cable 15 arranges to host computer 4 and inserts the aviation plug that corresponds along tower crane balance arm edge, the main control switch of electrical box in the disconnection driver's cabin 3, guarantee the electrical box outage, 14 series connection access play-up control circuit with the control cable on the

host computer

4, 220V circuit in the electrical box is connected to power cord 13, check that the circuit is correct and the ligature is fixed back main control switch that closes. After the host 4 is powered on, the touch display screen 22 displays a corresponding interface, a 'set parameter' button on the screen is clicked, a 6-bit debugging password is input, and a setting interface is entered. Changing the numerical value of the early warning value to 8 meters and the numerical value of the alarm value to 2 meters; in the column "AD 1", click the "read encoder" button to change the corresponding distance column value to 2 (meters), the current encoder value being associated with a distance of 2 meters; lowering the lifting hook 1 to the ground, clicking a button of a reading encoder in the column AD2, changing the value of the corresponding distance column into 40 meters, and associating the current value of the encoder with the distance of 40 meters; clicking the ok button, the parameter set is successful and returns to the touch screen 22 home interface. The touch screen display 22 displays a main interface top "current hook distance" of 40 meters. Lifting the lifting hook 1, when the display value of the current lifting hook distance is gradually reduced from 40 to 8 meters, the bottom color of the numerical value 8 is changed into yellow, and meanwhile, the loudspeaker 12 broadcasts a lifting hook top rushing warning; and the lifting hook 1 continues to be lifted, when the value 8 is gradually reduced to 2 meters, the bottom color of the value 2 is changed into red, meanwhile, the loudspeaker 12 broadcasts 'top rushing alarm', the control circuit 26 is changed from a normally closed circuit into an open circuit, a lifting control loop is cut off, and the lifting hook 1 stops lifting. Slowly descending the lifting hook 1, wherein when the display value of the current lifting hook distance is larger than 2, the numerical bottom color is changed from red to yellow, when the display value is larger than 8, the numerical bottom color is changed from yellow to normal, when the lifting hook 1 is descended to the ground, the current lifting hook distance is displayed to be 40 meters, and the parameter setting is successful if the parameter is correct.

The utility model discloses an intelligent alarm system that prevention tower crane lifting hook dashes top, the system is reasonable, the structure is succinct, easy operation, the installation of being convenient for is maintained, has increased lifting hook scour protection top safeguard measure one, has solved the not hard up inconspicuous problem of becoming flexible became invalid of high stopper 7, avoids driver's carelessness to take place to dash top danger.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a prevention tower crane lifting hook dashes intelligent alarm system on top which characterized in that: the intelligent alarm system comprises an encoder and a host; the encoder is connected with the height limiter and fixed on the height limiter, and the encoder is electrically connected with the host; the host is electrically connected with the lifting control loop.

2. The intelligent alarm system of claim 1 for preventing the tower crane hook from rushing to the top, characterized in that: the host is arranged in the cab.

3. The intelligent alarm system of claim 1 for preventing tower crane lifting hook from rushing to top, characterized in that: the encoder comprises a connecting sleeve, an encoder fixing bracket and an encoder cable; the encoder is connected with the height limiter through a connecting sleeve and fixed on the height limiter through an encoder fixing support, and the encoder is electrically connected with the host through an encoder cable.

4. The intelligent alarm system of claim 1 for preventing tower crane lifting hook from rushing to top, characterized in that: the host computer includes the shell, sets up in the outside touch display screen and the speaker of shell, sets up in inside mainboard and the power module of shell, be provided with encoder signal processing circuit and control circuit on the mainboard.

5. The intelligent alarm system of claim 4 for preventing tower crane lifting hook from rushing to top, characterized in that: and the control circuit is electrically connected with the lifting control loop through a control cable.

6. The intelligent alarm system of claim 4 for preventing tower crane lifting hook from rushing to top, characterized in that: the main board is provided with a storage unit which is electrically connected with the encoder signal processing circuit.