CN106744552B - The amplitude of the good insulation aerial work platform of safety limits system - Google Patents

Abstract

The present invention provides a kind of amplitude limitation system of the good insulation aerial work platform of safety, including insulation aerial work platform, and insulation aerial work platform includes telescopic arm, insulating folds arm and Telescopic support leg；It is structurally characterized in that：Further include amplitude oil cylinder, first pressure sensor, balanced valve, reversal valve, flowmeter, second pressure sensor and controller；Amplitude oil cylinder is mounted between telescopic arm and insulation folding arm；Amplitude oil cylinder is equipped with oil pressure chamber；First pressure sensor is connected with the oil pressure chamber of amplitude oil cylinder and is electrically connected with controller signals；Balanced valve is arranged in amplitude oil cylinder；Reversal valve is connected with balanced valve；Flowmeter is serially connected between reversal valve and balanced valve and is electrically connected with controller signals；Second pressure sensor is located on Telescopic support leg and is electrically connected with controller signals.The present invention solves the problems, such as that hybrid insulation aerial work platform can not be limited into line amplitude, improves the safety of working at height.

Description

Amplitude Limiting System of Insulated Aerial Work Platform with Good Safety

This application is a divisional application of the invention patent application with the application number 201510141996.2 and the application date is March 27, 2015, and the invention name is "Amplitude Limiting System for Insulated Aerial Work Platform".

technical field

The invention relates to the technical field of control of high-altitude work platforms, in particular to an amplitude limiting system of an insulating high-altitude work platform.

Background technique

With the development of economy and society, people's requirements for power supply continue to increase, and the demand for live work is increasing. Various insulated aerial work platforms have emerged and have been widely used. Insulated aerial work platforms usually adopt a hybrid boom form in order to improve operational performance and operational safety, that is, the lower part adopts a folding arm with an auxiliary insulating end, and the upper part adopts a telescopic arm with a main insulating end at the end. Because the lower folding arm has an insulating end, it is difficult to install electronic sensors on the upper telescopic arm to monitor the operating status of the boom in real time, and then realize the function of amplitude control. Therefore, the current hybrid arm type insulated aerial work platforms have no amplitude. The restriction function, which can only rely on manual control to limit the operating range, has potential safety hazards.

Contents of the invention

The purpose of the present invention is: to solve the problems of the prior art, to provide an insulating high-altitude working platform with good safety that does not need to arrange electrical components on the telescopic arm of the insulating high-altitude work platform, and can realize the precise amplitude limitation function during use to ensure the safety of high-altitude operations. The width limiting system of the working platform.

The technical solution of the present invention is: the amplitude limiting system of the insulated high-altitude work platform with good safety of the present invention includes an insulated high-altitude work platform, and the insulated high-altitude work platform includes a telescopic arm, an insulating folding arm and a telescopic support leg; its structural characteristics are: : It also includes a luffing oil cylinder, a first pressure sensor, a balance valve, a reversing valve, a flow meter, a second pressure sensor and a controller;

The above-mentioned luffing oil cylinder is installed between the telescopic arm and the insulating folding arm; the luffing oil cylinder is provided with an oil pressure chamber;

The first pressure sensor is connected to the oil pressure chamber of the luffing cylinder by an insulated hydraulic pipeline passing through the insulating folding arm from bottom to top; the first pressure sensor is electrically connected to the controller signal through a cable; the balance valve is set at the luffing On the oil cylinder; the reversing valve is connected to the balance valve by two hydraulic pipelines passing through the insulating folding arm from bottom to top; the flowmeter is connected in series to one hydraulic pipe of the two hydraulic pipelines connecting the reversing valve and the balance valve On the road; the flowmeter is electrically connected to the controller signal through a cable;

The above-mentioned second pressure sensor is arranged on the telescopic support legs of the insulating aerial work platform, and each telescopic support leg is respectively provided with one; each second pressure sensor is electrically connected with the controller signal;

The above-mentioned first pressure sensor detects the pressure on the oil pressure chamber in real time and transmits it to the controller; the flowmeter detects the amount of liquid flowing into or out of the luffing oil cylinder in real time and transmits the detection information to the controller; the flow rate detected by the flowmeter in the controller Correspondingly calculate the expansion and contraction amount of the telescopic arm and the angle relative to the ground; if the pressure detected by the controller exceeds the maximum pressure allowed at the corresponding angle, the controller will send a signal to prohibit the telescopic arm from continuing to extend or move downward. movement;

The above-mentioned second pressure sensors respectively transmit the pressure signals detected by them to the controller; the controller sums the data reported by the second pressure sensors and correspondingly obtains the sum of the weight of the entire insulating aerial work platform and the platform load, When the weight detected by the controller is greater than the sum of the weight of the insulating aerial work platform and the maximum load allowed by the platform, the controller judges that overload occurs and sends a signal to cut off all actions.

The present invention has positive effects: compared with the prior art, the amplitude limiting system of the insulating high-altitude operation platform with good safety in the present invention can monitor the hydraulic pressure of the luffing oil cylinder remotely and monitor the liquid flow in the luffing oil cylinder The expansion and contraction of the telescopic arm and the angle relative to the ground are determined, so as to realize the detection and control of the working range of the aerial work platform, and solve the problem that the range of the hybrid insulating aerial work platform cannot be limited in the past; The pressure sensor on the legs realizes the monitoring of the load condition of the platform, prevents the platform from overloading, and further improves the safety of high-altitude operations.

Description of drawings

Fig. 1 is the schematic diagram of the application example of the present invention;

Fig. 2 is a hydraulic principle diagram of the present invention.

The reference signs in the above-mentioned accompanying drawings are as follows:

Insulated aerial work platform 1, telescopic arm 11, insulating folding arm 12, telescopic support leg 13,

luffing cylinder 2, oil pressure chamber 21,

first pressure sensor 3,

balance valve 4,

reversing valve 5,

flow meter 6,

second pressure sensor 7,

controller8.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

(example)

See Figure 1 and Figure 2, the amplitude limiting system of the insulated aerial work platform with good safety in this embodiment is mainly composed of an insulating aerial work platform 1, a luffing cylinder 2, a first pressure sensor 3, a balance valve 4, and a reversing valve 5. The flow meter 6, the second pressure sensor 7 and the controller 8 are composed.

The insulated aerial work platform 1 is an insulated aerial work platform with a hybrid boom structure. The insulated aerial work platform 1 has a telescopic arm 11 , an insulating folding arm 12 and a telescopic support leg 13 .

The luffing cylinder 2 is installed between the telescopic arm 11 and the insulating folding arm 12, and the telescopic arm 11 is driven by the luffing cylinder 2 to realize the luffing action. The luffing oil cylinder 2 is provided with an oil pressure chamber 21 , and the pressure on the oil pressure chamber 21 is the pressure on the luffing oil cylinder 2 .

The first pressure sensor 3 is connected with the oil pressure chamber 21 of the luffing cylinder 2 by an insulated hydraulic pipeline passing through the insulating folding arm 12 from bottom to top; The pressure in the pressure chamber 21 realizes remote monitoring; the first pressure sensor 3 is electrically connected with the controller 8 through a cable.

The balance valve 4 is set on the luffing cylinder 2. When in use, the balance valve 4 can provide back pressure for the luffing cylinder 2 when it is moving, improving the movement stability of the luffing cylinder 2; at the same time, when the pipeline fails The luffing oil cylinder 2 can be locked to prevent the luffing oil cylinder 2 from moving on its own and causing safety accidents.

The reversing valve 5 is used to control the expansion and contraction of the luffing cylinder 2; the reversing valve 5 is connected with the balance valve 4 by two hydraulic lines passing through the insulating folding arm 12 from bottom to top.

The flowmeter 6 is connected in series to one of the two hydraulic pipelines connecting the reversing valve 5 and the balance valve 4; the flowmeter 6 is used to detect the flow of the driving fluid when in use, and the flowmeter 6 is connected to the control valve through a cable. 8 signal electrical connections.

The second pressure sensor 7 is arranged on the telescopic support legs 13 of the insulating aerial work platform 1 , and each telescopic support leg 13 is respectively provided with one; each second pressure sensor 7 is electrically connected with the controller 8 .

(Application example)

The amplitude limiting system of the insulated high-altitude work platform with good safety in the foregoing embodiments, when in use, the luffing cylinder 2 drives the telescopic arm 11 to move to achieve outward extension and luffing; the oil pressure chamber of the luffing cylinder 2 The first pressure sensor 3 connected to 21 detects in real time the pressure on the oil pressure chamber 21, that is, the pressure signal on the luffing cylinder 2, and transmits it to the controller 8; the flow meter 6 detects the liquid flowing into or out of the luffing cylinder 2 in real time. measure and convert the detection information into electrical signals and send it to the controller 8; the controller 8 receives the detection data of the flowmeter 6 to calculate the stretching state of the luffing cylinder 2, and then correspondingly determines the angle of the telescopic arm 11 relative to the ground at this time .

When the telescopic arm 11 stretches out or varies downward, the pressure monitored by the first pressure sensor 3 and the flow rate detected by the flow meter 6 will change accordingly, and the controller 8 will calculate the corresponding flow rate based on the flow rate detected by the flow meter 6 The amount of expansion and contraction of the telescopic arm 11 and the angle relative to the ground. If the controller 8 detects that the pressure exceeds the maximum pressure allowed at the corresponding angle, the controller 8 will send a signal to prohibit the telescopic arm 11 from continuing to extend or move downward by controlling the hydraulic system of the insulating aerial work platform, thereby The function of limiting the working range is realized, which ensures the safety of working at heights.

When in use, the second pressure sensors 7 arranged on the telescopic support legs 13 of the insulating aerial work platform 1 transmit the pressure signals detected by them to the controller 8; the controller 8 reports each second pressure sensor 7 The summation of the data obtains the sum of the weight of the whole insulating aerial work platform 1 and the platform load, and when the weight detected by the controller 8 is greater than the weight of the insulating aerial work platform 1 and the sum of the maximum load allowed by the platform, the controller 8 promptly Judging that overload occurs, the controller 8 sends a signal to cut off all actions by controlling the hydraulic system of the insulating aerial work platform, thereby further improving the use safety performance of the insulating aerial work platform 1 .

In summary, compared with the prior art, the present invention determines the amount of expansion and contraction of the telescopic arm 11 and the angle relative to the ground by remotely monitoring the hydraulic pressure of the luffing cylinder 2 and the liquid flow rate in the luffing cylinder 2, thereby realizing The detection and control of the working range of the aerial work platform solves the problem that the previous hybrid insulated aerial work platform cannot limit the range; at the same time, the second pressure sensor 7 installed on the telescopic support leg 13 is used to monitor the load of the platform. It prevents the platform from overloading and further improves the safety of high-altitude operations.

The above embodiments and application examples are descriptions of specific implementations of the present invention, rather than limitations of the present invention. Those skilled in the relevant technical fields can also make various transformations and changes without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims (1)

1. a kind of amplitude of the good insulation aerial work platform of safety limits system, including insulation aerial work platform（1）, institute The insulation aerial work platform stated（1）Including telescopic arm（11）, insulation fold arm（12）And Telescopic support leg（13）；Its feature It is：The amplitude limitation system of the good insulation aerial work platform of the safety further includes amplitude oil cylinder（2）, first pressure pass Sensor（3）, balanced valve（4）, reversal valve（5）, flowmeter（6）, second pressure sensor（7）And controller（8）；

The amplitude oil cylinder（2）Mounted on telescopic arm（11）Arm is folded with insulation（12）Between；Amplitude oil cylinder（2）Equipped with oil pressure Chamber（21）；

First pressure sensor（3）Insulation is passed through to fold arm from bottom to top by one（12）Insulation fluid pressure line and amplitude oil cylinder （2）Oil pressure chamber（21）It is connected；First pressure sensor（3）Pass through cable and controller（8）Signal is electrically connected；Balanced valve （4）It is arranged in amplitude oil cylinder（2）On；Reversal valve（5）Insulation is passed through to fold arm from bottom to top by 2（12）Fluid pressure line with it is flat Weigh valve（4）It is connected；Flowmeter（6）It is serially connected in reversal valve（5）With balanced valve（4）1 hydraulic tube of 2 fluid pressure lines of connection On the road；Flowmeter（6）Pass through cable and controller（8）Signal is electrically connected；

The second pressure sensor（7）Setting is in insulation aerial work platform（1）Telescopic support leg（13）On, each Telescopic support leg（13）Upper each setting 1 of difference；Each second pressure sensor（7）With controller（8）Signal is electrically connected；

The first pressure sensor（3）Detection oil pressure chamber in real time（21）Pressure is simultaneously transferred to controller（8）；Flowmeter （6）Detection flows in or out amplitude oil cylinder in real time（2）Liquid measure and detection information is transferred to controller（8）；Controller（8）By Flowmeter（6）The flow of detection accordingly calculates telescopic arm（11）Stroke and angle relative to ground；If controller （8）When the pressure monitored has been more than the maximum pressure allowed under corresponding angle, controller（8）Send out signal-inhibiting telescopic arm （11）Continue extending action or the action of downward luffing；

Each second pressure sensor（7）The pressure signal detected respectively is transferred to controller（8）；Controller （8）By each second pressure sensor（7）The data summation reported and submitted accordingly obtains entire insulation aerial work platform（1）Weight and The summation of platform load, works as controller（8）The weight monitored is more than insulation aerial work platform（1）Weight and platform allow Maximum load summation when, controller（8）Judge to occur to overload and sends out signal cut everything.