CN210340121U - Suspension arm height limit control device - Google Patents

Abstract

The utility model discloses a suspension arm height limiting control device, which comprises a receiver for acquiring the height of the suspension arm to the ground and a control piece connected with a driving device of the suspension arm; the receiver is installed in the crane, and a processor used for sending a control signal to the control element according to the height of the suspension arm to the ground is arranged in the receiver, so that the control element prevents the suspension arm from moving upwards when the suspension arm exceeds a limit height. When the height of the suspension arm to the ground exceeds the limit height, the suspension arm height limit control device can prevent the suspension arm from being further lifted, the height of the suspension arm to the ground is controlled within a safety range, the phenomenon that the suspension arm is overhigh due to negligence or error of crane operators, personal safety of other personnel in an operation area is threatened is avoided, and damage to existing facilities in the operation area is avoided.

Description

Suspension arm height limit control device

Technical Field

The utility model relates to a crane machinery especially relates to a davit limit for height controlling means.

Background

When the crane works in a limited space, the height and the telescopic range of the suspension arm are often required to be controlled so as to ensure the operation safety. For example, when the crane works in the protection area of the high-voltage transmission line, if the crane arm is lifted too high carelessly, the safety distance between the crane arm and the lead is insufficient, the line is subjected to discharge tripping, the personal safety of operators is endangered, other nearby personnel are injured, and the safety operation of the high-voltage line is also influenced.

In summary, how to avoid the boom from being too high becomes a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a davit limit for height controlling means can prevent the davit lifting automatically when the davit exceedes the limit for height, avoids causing the incident because of artificial careless.

In order to achieve the above object, the present invention provides a suspension arm height limiting control device, which includes a receiver for obtaining the height of the suspension arm with respect to the ground and a control element connected to a driving device of the suspension arm; the receiver is mounted on the crane, and a processor used for sending a control signal to the control element according to the height of the suspension arm to the ground is arranged in the receiver, so that the control element prevents the suspension arm from moving upwards when the suspension arm exceeds a limit height.

Preferably, the processor is connected with the control member through a cable; the shell of the receiver is provided with a mounting hole for the cable to pass through.

Preferably, the control part is a relay switch, and the relay switch is connected with a main control circuit for driving the suspension arm to move;

when the suspension arm exceeds the limit height, the processor sends a first control signal to the relay switch through the cable and is used for disconnecting the main control circuit to stop the suspension arm.

Preferably, the control member is an electric control valve which is connected with a hydraulic circuit for driving the boom to move;

when the boom arm exceeds the limit height, the processor sends a first control signal to the electric control valve through the cable, and the first control signal is used for disconnecting the hydraulic circuit to stop the boom arm or reversely driving the hydraulic circuit to enable the boom arm to automatically descend.

Preferably, an audible and visual alarm device which is connected with the processor and used for sending an alarm signal when the suspension arm exceeds the limit height is further arranged in the receiver.

Preferably, a nixie tube display connected with the processor and used for displaying the height of the lifting arm relative to the ground is further arranged in the receiver.

Preferably, a power module which is connected with the processor, the sound and light alarm device and the nixie tube display and used for providing electric energy for the processor, the sound and light alarm device and the nixie tube display is arranged in the receiver.

Preferably, the height detector is connected with the receiver and is used for being connected with the suspension arm to detect the height of the suspension arm relative to the ground.

Preferably, the height detector is a radar detector for periodically detecting the height of the suspension arm to the ground; the receiver also comprises a buzzer which is connected with the processor and is used for starting when the processor does not receive the detection signal in one period of the radar detector.

Preferably, the processor is a single chip microcomputer.

Compared with the prior art, the utility model provides a davit limit for height controlling means is including being used for acquireing the davit to the receiver of ground height and being used for the control that links to each other with the drive arrangement of davit. The receiver is arranged in the crane, and a processor used for sending a control signal to the control element according to the height of the boom to the ground is arranged in the receiver, so that the control element prevents the boom from moving upwards when the height of the boom exceeds a limit height, and further, the safety accident of the crane caused by the fact that the height of the boom to the ground exceeds a safety range is avoided.

The height limiting control device for the suspension arm can automatically adjust the motion state of the suspension arm when the suspension arm exceeds the height limit, so that the height of the suspension arm to the ground is limited within a safe operation range, and the situation that the suspension arm is overhigh due to the error of crane operators, and further existing facilities in an operation area are damaged, the personal safety of the operators is endangered, and other personnel nearby the crane are injured is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a receiver of a suspension arm height limiting control device according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1

FIG. 4 is a left side view of FIG. 1;

the device comprises a shell, a processor, a 3-nixie tube display, a 4-buzzer, a 5-battery compartment, a 6-data conversion module, a 7-power module, an 8-relay, a 9-sound and light alarm device, a 10-LED indicator light, a 11-wireless transmission module and a 12-power switch, wherein the shell is arranged on the shell, the processor is arranged on the 2-processor, the 3-nixie tube display is arranged on the shell, the buzzer is arranged on the.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a receiver of a suspension arm height limiting control device according to an embodiment of the present invention; FIG. 2 is a front view of FIG. 1; FIG. 3 is a top view of FIG. 1; fig. 4 is a left side view of fig. 1.

The utility model provides a suspension arm height limiting control device, which comprises a receiver and a control element, wherein the receiver is arranged on a crane and is used for acquiring the ground height of a suspension arm; the control part is connected with a driving device of the suspension arm; the receiver is internally provided with a processor 2 which is used for sending a control signal to the control piece according to the height of the lifting arm to the ground.

When the receiver acquires that the height of the boom above the ground level exceeds the limit height, a processor 2 in the receiver sends a control signal to the control element so that the control element prevents the boom from continuing to move upwards. Wherein the control preventing the boom from continuing to move upward comprises shutting down a drive of the boom and reversing the drive to operate the boom.

The specific manner in which the height of the boom relative to the ground is obtained for the receiver may depend on the function of the receiver. For example, when the receiver is a distance measurement product component such as an infrared detection device with a height detection function, a radar detection device and the like, the receiver detects in real time to acquire the height of the boom to the ground, and converts the acquired data into a control signal through a processor 2 in the receiver to send the control component; when the receiver is a product part only having the functions of receiving and processing signals, the product part is required to be combined with a ranging product part having a height detection function for simultaneous use, the ranging product part having the height detection function detects the height of the lifting arm to the ground in real time, and sends detection data to the receiver; the receiver receives the aforementioned detection data to obtain the boom height to ground and converts the obtained data into a control signal via a processor 2 in the receiver to be sent to the control. The processor 2 may be any logic processor having functions of calculating, receiving/storing commands, processing data, and the like in the prior art.

The control mode of the control part to the suspension arm is determined by combining the actual arrangement form of the driving device of the suspension arm. For example, when the boom is driven by a motor, the control member may shut down the boom by breaking a circuit between the motor and the boom, or operate the motor to reverse to automatically lower the boom; when the boom is hydraulically driven, the control member may be provided as a control valve for blocking the hydraulic circuit to shut down the boom or for reversing the hydraulic circuit to automatically lower the boom.

The suspension arm height limiting control device can prevent the suspension arm from being further lifted when the height of the suspension arm to the ground exceeds the height limit, the height of the suspension arm to the ground is controlled within a safety range, the phenomenon that the suspension arm is overhigh due to negligence or error of crane operators is avoided, personal safety of other personnel in an operation area is threatened, and damage to existing facilities in the operation area is avoided.

The suspension arm height limiting control device provided by the present invention will be further described with reference to the accompanying drawings and embodiments.

In order to simplify the arrangement form of the suspension arm height limiting control device and improve the reliability of signal transmission, the processor 2 is connected with the control part through a cable. When the height of the boom to the ground exceeds the limit height, the processor 2 sends an electric signal to the control part according to the height of the boom to the ground, the electric signal is transmitted to the control part through the cable, and the control part is operated to adjust the driving device of the boom so as to stop the boom or drive the boom to descend.

In this embodiment, the housing 1 of the receiver is provided with mounting holes; a mounting hole may be provided at a side of the disposer 2 adjacent to the housing 1, with one end of a cable connected to the disposer 2 and the other end of the cable extending outwardly through the mounting hole and connected to the control member.

It should be noted that the lengths of the cables used for the receivers having different functions are different. When the receiver has only the function of receiving and processing signals, the receiver is used with another product component having a height detection function, and the position of the receiver does not need to be changed along with the height change of the boom, so that the position of the receiver relative to the main body part of the crane is fixed, the distance between the receiver and the control element is fixed, and the length of the cable corresponds to the inherent distance between the receiver and the control element. When the receiver has the functions of receiving and processing signals and also has the height detection function, the receiver is installed on the suspension arm, the height of the receiver changes along with the height change of the suspension arm, the distance between the receiver and the control piece is changed continuously, the minimum length of the cable is not less than the maximum distance between the receiver and the control piece, and the cable is prevented from being broken due to the stretching of the receiver and the control piece.

Two specific embodiments are given below for the specific structure of the control member.

In a specific embodiment of the first control element, the control element is a relay switch, the relay switch is connected with a main control circuit for driving the suspension arm to move, and the relay switch has two states of switching on the main control circuit and switching off the main control circuit.

When the suspension arm exceeds the limit height, namely the height of the suspension arm to the ground exceeds the maximum safe working value, the processor 2 sends a first control signal to the relay switch, so that the relay switch disconnects the main control circuit to stop the suspension arm, and when the suspension arm is continuously controlled to move upwards under the condition that a crane operator does not realize that the suspension arm is ultrahigh, the suspension arm cannot be connected with the power unit due to the disconnection of the main control circuit, so that the suspension arm is in a static state.

Of course, in order to facilitate the subsequent descending of the suspension arm, the relay switch is also connected with a control panel in the crane cab. When the crane operator sends an action signal for controlling the boom to descend, the processor 2 sends a second control signal to the relay switch, and the relay switch automatically switches on the main control circuit so that the main control circuit drives the boom to descend.

In a specific embodiment of the second control element, the control element is an electrically controlled valve, which is connected to a hydraulic circuit for driving the boom to move, and the electrically controlled valve at least comprises a closing state and a switching state, and the electrically controlled valve can be set to be a normally open type solenoid valve. When the suspension arm is in a normal working range, the electric control valve is in a normally open state, the hydraulic circuit is always connected, and the suspension arm is driven to move upwards or downwards according to the state of an electromagnetic directional valve used for adjusting the direction of the circuit in the hydraulic circuit; when the suspension arm is over high, the electric control valve is in a closed state, the hydraulic circuit is interrupted, and the suspension arm stops moving.

The electric control valve can also adopt a two-position five-way electromagnetic valve which is used for closing the hydraulic circuit and adjusting the direction of the hydraulic circuit; the direction of the hydraulic circuit specifically comprises the steps of keeping the hydraulic circuit in forward communication to drive the suspension arm to move upwards and keeping the hydraulic circuit in reverse communication to drive the suspension arm to move downwards. In this embodiment, when the height of the boom to the ground exceeds the limit height, the processor 2 sends a first control signal to the electric control valve, the electric control valve closes the hydraulic circuit to stop the boom, or the processor 2 sends a third control signal to the electric control valve, the electric control valve changes the reverse circulation of the hydraulic circuit to drive the boom to move downwards, and the automatic descending of the boom is realized.

Similar to the first control embodiment, the electrical control valve is also connected to a control panel in the cab of the crane, and when the crane operator signals the operation of maneuvering the boom down, the processor 2 sends a second control signal to the electrical control valve, which then re-opens the hydraulic circuit so that the hydraulic circuit actuates the boom down.

Of course, the control member may also adopt other ways of restoring the driving device of the boom so that the crane operator operates the driving device of the boom to drive the boom to descend.

The control piece can prevent the davit from moving upwards automatically after the davit is superelevation, but the crane operation personnel still probably do not realize this state of davit superelevation this moment, bring inconvenience for follow-up operation, for this reason, on the basis of the above-mentioned embodiment, the utility model provides a davit limit for height controlling means still includes the audible and visual alarm device 9 that sets up in the receiver. The audible and visual alarm device 9 is connected with the processor 2, specifically, the processor 2 analyzes the height of the suspension arm to the ground acquired by the receiver, once the suspension arm is ultrahigh, the processor 2 is connected with the relay 8 in the receiver, and the audible and visual alarm device 9 is opened through the relay 8, so that audible and visual signals are sent out to warn crane operators.

Further, a nixie tube display 3 connected with the processor 2 and used for displaying the height of the lifting arm relative to the ground is arranged in the receiver. The nixie tube display 3 can display the height of the boom to the ground acquired by the receiver as image digital information under the control of the processor 2 so that a crane operator can acquire the height of the boom to the ground in real time during operation, thereby consciously avoiding the crane from being overhigh.

A data conversion module 6 can be arranged between the nixie tube display 3 and the processor 2 and is used for converting the electric signal of the processor 2 into image digital information displayed in the interface of the nixie tube display 3.

In the specific arrangement of the above embodiment, the receiver is disposed in the visible range of the crane cab, and may be fixed to the control panel or the cab window, so that the crane operator can observe the image and digital information of the nixie tube display 3 at any time.

Further, a power module 7 is arranged in the receiver and used for providing electric energy for electrical elements such as the processor 2, the sound-light alarm device 9, the digital tube display 3 and the like. The power module 7 may include a battery, a battery compartment 5 for accommodating the battery to connect the battery to a circuit, an electric wire, a power switch 12, and other configurations of the power module 7 may be configured with reference to a power supply of an electronic product in the prior art, which will not be described herein too much.

The receiver can be further internally provided with an LED indicator light 10, the LED indicator light 10 is arranged on one side of the nixie tube displayer 3, the LED indicator light 10 is electrically connected with the processor 2, and when the processor 2 is powered on and works normally, the LED indicator light 10 is lightened.

Because the power supplies of the processor 2, the audible and visual alarm device 9, the digital tube display 3 and other electrical components in the receiver are independent of the circuit system of the crane, the suspension arm height limiting control device can be arranged as an integrated component and is used for being detachably arranged on cranes of various types. In use, the receiver is secured within the cab of the crane and the control member and cable are connected to the drive means of the crane.

In a specific embodiment, the receiver has only the function of receiving and processing signals, and for this purpose, the boom height limit control device further comprises a height detector connected with the receiver and used for detecting the height of the boom relative to the ground. The height detector is connected with the suspension arm and used for detecting the ground height of the suspension arm in real time in the motion process of the suspension arm and sending the detected data to the receiver.

According to the connection mode of the height detector and the receiver, the height detector can send an electric signal to the receiver through a cable and can also send a wireless signal to the receiver through a wireless device; correspondingly, when the height detector is connected with the receiver through a cable, a through hole for the cable to pass through is formed in the shell 1 of the receiver; when the height detector sends a wireless signal to the receiver, a wireless transmission module 11 is arranged in the shell 1 of the receiver, and the wireless transmission module 11 is used for receiving detection data sent by the height detector.

Further, height detector is preferably the radar detecter that adopts the periodic detection to ground height, the utility model provides a davit limit for height controlling means still includes and links to each other with treater 2, is used for the buzzer 4 that opens when treater 2 does not receive the detected signal in a period of radar detecter. When the LED indicator light 10 is turned on, the receiver does not receive the detection signal transmitted by the height detector within 5s, and the buzzer 4 buzzes every 2s until the receiver receives the detection signal transmitted by the height detector. Of these, 5s and 2s are only specific examples of the present embodiment, and the blast pattern and cycle of the buzzer 4 are not limited to the foregoing examples.

The processor 2 in any of the above embodiments may be a single chip.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above the utility model provides a davit limit for height controlling means has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A suspension arm height limiting control device is characterized by comprising a receiver used for acquiring the height of a suspension arm relative to the ground and a control piece connected with a driving device of the suspension arm; the receiver is mounted on a crane, and a processor (2) used for sending a control signal to the control element according to the height of the suspension arm to the ground is arranged in the receiver, so that the control element prevents the suspension arm from moving upwards when the suspension arm exceeds a limit height.

2. The boom height limit control of claim 1, characterized in that the processor (2) is connected with the control by a cable; the shell (1) of the receiver is provided with a mounting hole for the cable to pass through.

3. The boom height limit control device of claim 2, wherein the control element is a relay switch, and the relay switch is connected with a main control circuit for driving the boom to move;

when the suspension arm exceeds the limit height, the processor (2) sends a first control signal to the relay switch through the cable, and the first control signal is used for disconnecting the main control circuit to stop the suspension arm.

4. The boom height limiting control device of claim 2, characterized in that the control is embodied as an electrically controlled valve connected to a hydraulic circuit for driving the boom movement;

when the boom exceeds a limit height, the processor (2) sends a first control signal to the electric control valve through the cable, for disconnecting the hydraulic circuit to shut down the boom or for driving the hydraulic circuit in reverse to automatically lower the boom.

5. A boom height limiting control device according to claim 3 or 4, characterized in that an audible and visual alarm device (9) connected with the processor (2) and used for giving an alarm signal when the boom exceeds the height limit is arranged in the receiver.

6. The boom height limiting control device of claim 5, characterized in that a nixie tube display (3) connected with the processor (2) and used for displaying the height of the boom to the ground is further arranged in the receiver.

7. The suspension arm height-limiting control device of claim 6, wherein a power module (7) is arranged in the receiver and is connected with the processor (2), the acousto-optic alarm device (9) and the nixie tube display (3) and used for supplying electric energy to the processor (2), the acousto-optic alarm device (9) and the nixie tube display (3).

8. The boom height limit control apparatus of claim 7, further comprising a height detector coupled to the receiver for coupling to the boom to detect a height of the boom relative to the ground.

9. The boom height limit control device of claim 8, wherein the height detector is a radar detector for periodically detecting the height of the boom relative to the ground; the receiver further comprises a buzzer (4) connected to the processor (2) for being turned on when the processor (2) does not receive a detection signal within one period of the radar detector.

10. The boom height limit control device of claim 5, characterized in that the processor (2) is a single chip microcomputer.

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