CN111547599A - Stroke monitoring method and device for automatic tension balancing suspension device of steel wire rope - Google Patents

Abstract

The invention provides a stroke monitoring device of a steel wire rope tension automatic balance suspension device, which comprises a plurality of steel wire rope tension automatic balance suspension devices, wherein each steel wire rope tension automatic balance suspension device comprises a hydraulic cylinder, and a displacement sensor is arranged in the hydraulic cylinder and can monitor the displacement regulating quantity of the steel wire rope tension automatic balance suspension device. The invention provides a stroke monitoring method of a steel wire rope tension automatic balance suspension device, wherein a displacement sensor transmits displacement signals of a piston rod to a remote terminal through a signal transmitter, and the remote terminal processes a plurality of received displacement signals to obtain a piston rod stroke quantity numerical value and analyzes the numerical value, so that whether a hydraulic cylinder has phenomena of rope loosening, cylinder clamping, liquid leakage and tension nonadjustable or not is judged, and alarm and display are carried out. Based on the mutual matching of the device and the method, the working stability, safety and efficiency of the stroke monitoring device of the automatic tension balancing and suspending device for the steel wire rope are ensured.

Description

Stroke monitoring method and device of a wire rope tension automatic balance suspension device

technical field

The invention relates to the technical field of wire rope tension automatic balancing suspension devices, in particular to a stroke monitoring method and device of the wire rope tension automatic balancing suspension device.

Background technique

At present, the multi-rope hoisting containers in coal mines basically use hydraulic automatic balance suspension device to achieve automatic balance of wire rope tension. Hydraulic automatic balance device realizes pressure balance through the connection of different hydraulic cylinder chambers. The force changes at the same time, and the balancing device is rebalanced through the flow of hydraulic medium between different cavities. However, while the hydraulic balancing device has the advantages of automatic balancing, it often occurs in oil leakage, loose rope, stuck cylinder, and the tension is not adjustable, which affects the safety of coal mines.

At present, displacement sensors are often installed on the wire rope tension automatic balance suspension device to monitor the stroke of the piston rod in the hydraulic cylinder, so as to judge whether the tension adjustment function of the device can be used normally. However, with the wire rope tension automatic balance suspension device Due to the influence of the use time, the number of times and environmental factors, the wire rope tension automatic balance suspension device often occurs in various abnormal states during use. If these abnormal states cannot be effectively identified, it will greatly reduce the working efficiency of the device. Therefore, how to effectively judge these abnormal states to ensure the normal operation and maintenance of the wire rope tension automatic balance suspension device in the later stage is a problem that still needs to be solved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a stroke monitoring method and device for a wire rope tension automatic balancing suspension device.

The present invention solves its technical problem by adopting the following technical solutions to realize:

The invention provides a stroke monitoring device of a wire rope tension automatic balancing suspension device, which includes a connecting plate and a plurality of wire rope tension automatic balancing suspension devices. The wire rope tension automatic balance suspension devices all include a hydraulic cylinder, and a displacement sensor is arranged in the hydraulic cylinder. The displacement sensor includes a fixedly connected signal end and a probe end. The displacement sensor can automatically balance the wire rope tension. The displacement of the suspension device The adjustment amount is monitored.

Preferably, the hydraulic cylinder includes a cylinder barrel and a piston rod, the signal end of the displacement sensor is embedded in the bottom of the cylinder barrel, the piston rod is a hollow structure, and the end surface of the bottom of the piston rod is provided with an annular groove. A magnetic ring is fixed in the groove, a magnetic isolation gasket is arranged between the magnetic ring and the bottom end face of the annular groove, and the probe end of the displacement sensor is arranged in the hollow structure through the magnetic ring.

Preferably, a signal transmission line is drawn from the signal end, the signal transmission line is drawn out of the hydraulic cylinder through the bottom of the cylinder, and is connected to a signal transmitter through a signal collector, the signal transmitter is fixed outside the hydraulic cylinder, and the signal The transmitter is used for sending sensor monitoring data to a remote terminal, and the remote terminal is connected with an alarm.

Preferably, the wire rope tension automatic balance suspension device further includes a middle plate, a side plate and a reversing fork, the middle plate is connected to a wedge-shaped rope loop through a first connecting pin, and the side plates are arranged on both sides of the middle plate , the middle plate and the side plate are provided with a limit groove matching the hydraulic cylinder, the hydraulic cylinder is arranged in the limit groove, the bottom of the cylinder of the hydraulic cylinder is fixedly connected with the side plate through the pressure plate, and the hydraulic cylinder is The top end of the piston rod is connected to the limit groove groove surface at the bottom of the middle plate, one end of the reversing fork is connected to the bottom of the side plate through the second connecting pin, and the other end is fixedly connected to the connecting plate, and a sling is connected below the connecting plate. .

The invention provides a stroke monitoring method of a wire rope tension automatic balance suspension device, comprising the following steps:

(1), each of the displacement sensors respectively measures the stroke of each piston rod and sends the displacement signal to the signal transmitter;

(2) The signal transmitter sends the displacement signal to the remote terminal;

(3) The remote terminal processes the received displacement signals to obtain the piston rod stroke value and analyzes it to determine whether the hydraulic cylinder has the phenomenon of loose rope, stuck cylinder, liquid leakage and unadjustable tension;

(4) The remote terminal displays the stroke amount of each piston rod. If it is judged that the hydraulic cylinder is abnormal, it will control the alarm to give an alarm.

Preferably, the displacement sensor transmits the displacement signal of the piston rod to the remote terminal every 10ms through the signal transmitter.

Preferably, the data analysis steps for the remote terminal to determine whether the hydraulic cylinder has a loose rope phenomenon are as follows:

(1) The remote terminal records the value of the stroke amount of the piston rod received each time;

(2) The remote terminal compares the value of the stroke amount obtained each time with the value recorded last time, and judges the increase or decrease state of the stroke amount of the piston rod;

(3) If the number of times of continuous increase of the stroke volume is greater than the preset value in the remote terminal, it is judged that there is a loose rope event, and the alarm will alarm.

Preferably, the data analysis steps for the remote terminal to determine whether the hydraulic cylinder leaks liquid are as follows:

(1) The remote terminal records the value of the stroke amount of the piston rod received each time;

(2) In the remote terminal, compare the value of the stroke amount of the piston rod received each time with the value recorded last time, and calculate the current increase or decrease of the stroke amount of each piston rod;

(3) Add the increment and decrement of each piston rod stroke within a single time to determine whether it is 0.

(4) If the sum of the increase and decrease of the stroke amount of each piston rod is not 0, it will be judged that there is a liquid leakage event, and the alarm will alarm.

Preferably, the data analysis steps for the remote terminal to determine whether the tension is not adjustable in the hydraulic cylinder are as follows:

(1) The maximum and minimum strokes allowed by the piston rod are preset in the remote terminal;

(2), compare the received piston rod stroke value with the preset value;

(3) If the stroke value of the piston rod reaches the preset value, it will be judged that the tension cannot be adjusted and the alarm will alarm.

Preferably, the data analysis steps for the remote terminal to determine whether the hydraulic cylinder is stuck is as follows:

(1) The maximum time value that the stroke of the piston rod is allowed to remain unchanged is preset in the remote terminal;

(2) The remote terminal records the value of the stroke amount of the piston rod received each time;

(3), compare the value of the piston rod stroke amount received each time with the value recorded last time to determine whether there is a change;

(4), compare the time value in which the value of the stroke amount remains unchanged in continuous time with the preset value;

(5) If the time value reaches the preset value, it will be judged that there is a stuck cylinder event, and the alarm will alarm.

The advantages and positive effects of the present invention are:

(1) The method and device provided by the present invention can monitor and judge various abnormal states (liquid leakage, loose rope, stuck cylinder, unadjustable tension) of the wire rope tension automatic balance suspension device, so that the staff can be more Problems can be found in time and debugged effectively, thereby improving work efficiency and reducing labor costs.

(2) The method and device provided by the present invention can achieve various monitoring effects through only one displacement sensor, thereby reducing the manufacturing cost and use cost of the stroke monitoring device of the wire rope tension automatic balancing suspension device.

Description of drawings

Fig. 1 is the structural representation when the present invention is used;

Fig. 2 is the structural representation inside the hydraulic cylinder of the present invention;

Fig. 3 is the structural representation of the wire rope tension automatic balance suspension device of the present invention;

Fig. 4 is the structural representation of the spreader of the present invention;

Fig. 5 is the method flow chart that the present invention judges the loose rope event;

Fig. 6 is the flow chart of the method for judging liquid leakage event of the present invention;

Fig. 7 is the flow chart of the method for judging the tension non-adjustable event of the present invention;

FIG. 8 is a flow chart of the method for judging a cylinder jam event according to the present invention.

In the figure: 1. Steel wire rope tension automatic balance suspension device; 2. Connecting plate; 3. Hydraulic cylinder; 4. Displacement sensor; 5. Pressure sensor; 6. First connecting pipe; 7. Second connecting pipe; 8. Valve; 9. Spreader; 10. Arc-shaped pressing block;

11, middle plate; 12, side plate; 13, reversing fork; 14, first connecting pin; 15, wedge-shaped rope loop; 16, pressing plate; 17, limit groove; 18, second connecting pin;

31, cylinder; 32, piston rod; 33, annular groove;

41, signal end; 42, probe end; 43, magnetic ring; 44, magnetic isolation gasket; 45, signal transmission line;

81, the third fixing plate; 82, the fourth fixing plate; 83, the second threaded fixing hole;

91, connecting frame; 92, the first opening and closing plate; 93, the second opening and closing plate; 94, the first fixing plate; 95, the second fixing plate; 96, the first threaded fixing hole; 97, the weight reduction hole; 98, the first A connecting hole; 99, a third connecting hole.

Detailed ways

Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

As shown in Figure 1, Figure 2, Figure 3, the present invention provides a travel monitoring device for a wire rope tension automatic balance suspension device, comprising a connecting plate 2 and a number of wire rope tension automatic balance suspension devices 1, and a number of wire ropes pass through a number of The wire rope tension automatic balancing suspension device 1 is connected with the connecting plate 2, and each of the wire rope tension automatic balancing suspension devices 1 includes a hydraulic cylinder 3, and a displacement sensor 4 is arranged in the hydraulic cylinder 3, and the displacement sensor 4 includes a fixed connection. The signal end 41 and the probe end 42 of the displacement sensor 4 can monitor the displacement adjustment amount of the wire rope tension automatic balance suspension device 1 . It should be added that the displacement sensor 4 is a magnetostrictive liquid level sensor, and the magnetostrictive liquid level sensor adopts a non-contact measurement method, so that it is not easily affected by the medium in the hydraulic cylinder 3, thereby improving the stability of the measurement. sex.

Specifically, several wire ropes are connected to the connecting plate 2 through several wire rope tension automatic balancing suspension devices 1, and each wire rope is respectively connected with a wire rope tension automatic balancing suspension device 1, and the container to be lifted is hoisted under the connecting plate 2, so the The wire rope tension automatic balancing suspension device 1 is used to adjust the tension of the wire rope connected to it through the telescopic movement of the internal hydraulic cylinder 3, so that the tension of each wire rope is kept consistent after adjustment, so that the end face of the container to be lifted is kept in a horizontal state, Thereby increasing steadily. It should be added that the number of the wire rope and the wire rope tension automatic balancing suspension device 1 should be selected according to the actual application.

Further, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the hydraulic cylinder 3 includes a cylinder barrel 31 and a piston rod 32 , and the signal end 41 of the displacement sensor 4 is embedded in the bottom of the cylinder barrel 31 . The piston rod 32 is of a hollow structure and an annular groove 33 is provided on the bottom end face of the piston rod 32, a magnetic ring 43 is fixed in the annular groove 33, and a magnetic isolation gasket 44 is arranged between the magnetic ring 43 and the bottom end face of the annular groove 33, The probe end 42 of the displacement sensor 4 is disposed in the hollow structure through the magnetic ring 43 . The magnetic isolation gasket 44 is used to separate the magnetic ring 43 from the piston rod 32 to prevent magnetic flux leakage and other events, thereby improving the stability of the measurement.

Further, as shown in FIG. 1 , FIG. 2 and FIG. 3 , a signal transmission line 45 is drawn from the signal end 41 , and the signal transmission line 45 is drawn out of the hydraulic cylinder 3 through the bottom of the cylinder barrel 31 and connected through a signal collector. To the signal transmitter, the signal transmitter is fixed outside the hydraulic cylinder 3, and the signal collector is used to collect the analog signal sent by the signal transmission line 45 and send the analog signal to the signal transmitter, and the signal transmitter is used to The signal is sent to the remote terminal, which is connected to an alarm. It should be added that a sealing device is provided at the connection between the signal transmission line 45 and the bottom of the cylinder barrel 31 . liquid phenomenon. And the signal transmission lines 45 in the plurality of wire rope tension automatic balancing suspension devices 1 are all connected to the same signal transmitter through the signal collector.

In an embodiment of the present invention, the piston rod 32 can drive the magnetic ring 43 to reciprocate on the outside of the probe end 42 of the displacement sensor 4. The probe end 42 is based on the principle of magnetostriction measurement. The displacement of the ring 43 generates a corresponding pulse signal, and the pulse signal is transmitted to the signal terminal 41. The signal terminal 41 is provided with a detection circuit. The detection circuit can determine the magnetic ring 43 by analyzing and calculating the pulse signal. Then, the detection circuit transmits the displacement signal to the signal transmitter through the signal collector, and the signal transmitter can transmit the displacement signal to the remote terminal through wireless transmission for the staff to view in real time.

Further, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the wire rope tension automatic balancing suspension device 1 further includes a middle plate 11 , a side plate 12 and a reversing fork 13 , and the middle plate 11 is connected by a first connecting pin. 14 is connected with a wedge-shaped rope ring 15, the side plates 12 are arranged on both sides of the middle plate 11, and the middle plate 11 and the side plates 12 are both provided with limit grooves 17 that match the hydraulic cylinder 3. The hydraulic cylinder 3 is arranged in the limit groove 17, the bottom of the cylinder 31 of the hydraulic cylinder 3 is fixedly connected with the side plate 12 through the pressure plate 16, and the top of the piston rod 32 of the hydraulic cylinder 3 is connected with the limit groove 17 groove surface at the bottom of the middle plate 11. One end of the reversing fork 13 is connected with the bottom of the side plate 12 through the second connecting pin 18 , and the other end is fixedly connected with the connecting plate 2 , and a hanger 9 is connected below the connecting plate 2 . It should be added that the wedge-shaped rope loop 15 is connected with a wire rope, and the wedge-shaped rope loop 15 is used to connect the wire rope with the wire rope tension automatic balance suspension device 1 , and the signal transmitter is specifically fixed on the side plate 12 . side.

It should be added that, as shown in Figures 1 and 3, the hydraulic cylinder 3 of each wire rope tension automatic balancing suspension device 1 is connected with a first connecting pipe 6 near the pressure plate 16, and the first connecting pipe 6 is connected to the first connecting pipe 6. The connecting pipes 6 are connected through the second connecting pipe 7, the connection between the first connecting pipe 6 and the second connecting pipe 7 is provided with a valve 8, and each hydraulic cylinder 3 is connected by the first connecting pipe 6 and the second connecting pipe 7 and valve 8 achieve hydraulic balance. And the second connecting pipe 7 is provided with a pressure sensor 5 for detecting oil pressure. The pressure sensor 5 is connected to the signal transmitter through a signal collector, and the pressure sensor 5 is used to detect the tension of the wire rope. Automatically balance the oil pressure of the suspension device 1, and send the oil pressure signal to the signal transmitter through the signal collector, the signal transmitter receives the oil pressure signal and sends it to the remote terminal, and the oil pressure sensor is used to assist displacement The sensor 4 monitors the working state of the wire rope tension automatic balancing suspension device 1. Specifically, in an embodiment of the present invention, the remote terminal can judge the wire rope tension automatic balancing suspension by processing and analyzing the oil pressure signal. Lift amount of device 1.

In one embodiment of the present invention, there are four wire rope tension automatic balancing suspension devices 1. When the tension of the wire rope connected to a certain wire rope tension automatic balancing suspension device 1 is relatively large, the wire rope tension automatic balancing suspension For device 1, there are:

Due to the large tension, the steel wire rope drives the middle plate 11 to move upward through the wedge-shaped rope ring 15. Since the top of the piston rod 32 of the hydraulic cylinder 3 is connected to the groove surface of the limit groove 17 at the bottom of the middle plate 11, during the movement of the middle plate 11 , the piston rod 32 of the hydraulic cylinder 3 moves upward synchronously with the middle plate 11 , so that the hydraulic cylinder 3 is compressed, and the hydraulic pressure in the hydraulic cylinder 3 increases. Since the hydraulic cylinders 3 communicate with the valve 8 through the first connecting pipe 6 and the second connecting pipe 7, the liquid in the hydraulic cylinder 3 whose hydraulic pressure increases will pass through the first connecting pipe 6 and the second connecting pipe 7. And the valve 8 automatically flows into other hydraulic cylinders 3 with lower pressure, until the hydraulic pressure in each hydraulic cylinder 3 is equal, the liquid no longer flows to achieve hydraulic balance, during this process, the liquid in the hydraulic cylinder 3 with the previous lower pressure increases, driving the corresponding The piston rod 32 is extended, and the middle plate 11 drives the wire rope downward to increase the tension until the tension of the wire rope with the previous larger tension is equal to the tension of the wire rope during the stretching process of the piston rod 32, so as to realize the balance of the wire rope tension. During this working process, the pressure sensor 5 monitors the oil pressure in the second connecting pipe 7 and sends the data to the remote terminal through the signal collector and the signal transmitter.

Specifically, as shown in FIG. 4 , it should be noted that in the mine operation, the container to be lifted may specifically be a container such as a skip, a cage or a hanging bucket. For lifting, the buckets are mostly selected for single-rope lifting. During the single-rope lifting process, the buckets are prone to rotate or shift, which affects the lifting effect, and the two sets of single-rope and multi-rope lifting equipment greatly increase the use cost of mine operations. Therefore, in the present invention, a spreader 9 is added between the connecting plate 2 and the container to be lifted, and the spreader 9 is suitable for three types of lifting containers, such as a skip, a cage or a bucket.

Specifically, the hanger 9 includes a connecting frame 91 , the connecting frame 91 is in the shape of a box with an opening facing downward, and opposite sides of the connecting frame 91 are provided with a first opening and closing plate 92 and a second opening and closing plate 93 The first opening and closing plate 92 and the second opening and closing plate 93 are hinged with the connecting frame 91 respectively, and the first opening and closing plate 92 and the second opening and closing plate 93 are unidirectional opening and closing and the opening and closing directions are opposite. A first fixing plate 94 and a second fixing plate 95 are arranged at one end of the first opening and closing plate 92 and the second opening and closing plate 93 near the opening of the connecting frame 91 , and the first opening and closing plate 92 and the second opening and closing plate 93 are far away from the connection. A third fixing plate 81 and a fourth fixing plate 82 are crossed at one end of the opening of the frame 91. The first fixing plate 94 and the second fixing plate 95 are provided with matching first threaded fixing holes 96. The third fixing plate 81, The fourth fixing plate 82 and the connecting frame 91 are provided with matching second threaded fixing holes 83, and the first fixing plate 94 and the second fixing plate 95 can be fixed by bolts through the first threaded fixing holes 96, so The third fixing plate 81 , the fourth fixing plate 82 and the connecting frame 91 can be fixed by bolts through the second threaded fixing holes 83 . When both ends of the first opening and closing plate 92 and the second opening and closing plate 93 are fixed, the The longitudinal sections of the first opening and closing plate 92 , the second opening and closing plate 93 and the connecting frame 91 are kept on the same plane, and the first opening and closing plate 92 , the second opening and closing plate 93 and the bottom end section of the connecting frame 91 are kept on the same plane. It should be noted that the first opening and closing plate 92 and the second opening and closing plate 93 are provided with weight-reducing holes 97 of triangular structure, and the third fixing plate 81 and the fourth fixing plate 82 are designed to make the first One end of the opening and closing plate 92 and the second opening and closing plate is fixedly connected with the connecting frame 91 during use, so that the connecting frame 91 can bear the load of the first opening and closing plate 92 and the second opening and closing plate 93 at the same time, thus ensuring all the Describe the stability of the spreader 9 when it is working. It should be added that a plurality of first connection holes 98 are provided at the horizontal plate above the connection frame 91 , and second connection holes matched with the first connection holes 98 are provided at corresponding positions on the connection plate 2 , so as to realize The connection plate 2 is fixedly connected to the connection frame 91 . A plurality of third connecting holes 99 are provided on one side of the first opening and closing plate 92 and the second opening and closing plate 93 and on both sides of the connecting frame 91 . The connection holes are used for matching, so as to realize the fixed connection between the spreader 9 and the container to be lifted. It should be emphasized that the length of the connecting frame 91 should be selected according to the actual situation, and the number of the spreader 9 should also be selected according to the actual situation. Specifically, for example, a single spreader 9 can be selected when lifting the bucket, When lifting skips and cages, multiple sets of spreaders 9 can be selected for common use, or a single spreader 9 can be selected.

In the first embodiment of the present invention, when the container to be lifted is a skip or a cage, the first opening and closing plate 92 and the second opening and closing plate 93 are fixed by the first fixing plate 94 and the second fixing plate 95 and the third fixing plate The plate 81 and the fourth fixing plate 82 are directly fixed, one end of the hanger 9 is fixedly connected to the connecting plate 2 through the first connecting hole 98 on the connecting frame 91, and the other end of the hanger 9 is connected to the connecting frame 91 through the first opening and closing plate 91. 92. The third connection hole 99 on the second opening and closing plate 93 is fixed with the skip or cage, and then starts to be lifted by the wire rope, so as to achieve the effect of lifting the skip or cage through the sling 9 .

In the second embodiment of the present invention, when the container to be lifted is a bucket, the bolts on the first fixing plate 94 and the second fixing plate 95 , the third fixing plate 81 and the fourth fixing plate 82 are loosened first. Then, the lifting ring on the bucket moves between the two ends of the first opening and closing plate 92 and the second opening and closing plate 93, and then passes through the first fixing plate 94 and the second fixing plate 95, the third fixing plate 81 and the fourth fixing plate 82. The first opening and closing plate 92 and the second opening and closing plate 93 are fixed, the lifting ring is attached to the first fixing plate 94, and then the lifting ring is fixed between the arc-shaped pressing block 10 and the first fixing plate 94 by an arc-shaped pressing block 10. During the time, the arc-shaped pressing block 10 is fixed on the top of the first fixing plate 94 by bolts, thereby realizing the fixed connection between the hanger 9 and the hanging bucket. After ensuring that the upper part of the hanger 9 is fixedly connected to the connecting plate 2 through the first connecting hole 98 on the connecting frame 91 , the lift is carried out by the wire rope, so that the lifting bucket can be lifted by the hanger 9 .

In the third embodiment of the present invention, the first connecting hole 98 on the hanger 9 can be replaced with a mounting hole matched with the wire rope tension automatic balancing suspension device 1, that is, the hanger 9 can replace the connecting plate 2. It is directly and fixedly connected to the wire rope tension automatic balancing suspension device 1. Whether there is a connecting plate 2 between the wire rope tension automatic balancing suspension device 1 and the hanger 9 should be determined according to actual needs.

The present invention also provides a stroke monitoring method applied to the stroke monitoring device of the wire rope tension automatic balancing suspension device 1, the steps of which are as follows:

(1), each of the displacement sensors 4 respectively measures the stroke amount of each piston rod 32 and sends the displacement signal to the signal transmitter;

(2) The signal transmitter sends the displacement signal to the remote terminal;

(3), the remote terminal processes the received displacement signals to obtain the stroke value of the piston rod 32 and analyzes it, and judges whether the hydraulic cylinder 3 has the phenomenon of loose rope, stuck cylinder, liquid leakage and unadjustable tension;

(4) The remote terminal displays the stroke amount of each piston rod 32, and controls the alarm to give an alarm if it is judged that the hydraulic cylinder 3 works abnormally.

Further, as shown in FIG. 5 , the displacement sensor 4 transmits the displacement signal of the piston rod 32 to the remote terminal every 10ms through the signal transmitter.

Further, as shown in FIG. 5 , the data analysis steps for the remote terminal to determine whether the hydraulic cylinder 3 has a loose rope phenomenon are as follows:

(1), the remote terminal records the value of the stroke amount of the piston rod 32 received each time;

(2), the remote terminal compares the value of the stroke amount obtained each time with the value recorded last time, and judges the increase or decrease state of the stroke amount of the piston rod 32;

(3) If the number of times of continuous increase of the stroke volume is greater than the preset value in the remote terminal, it is judged that there is a loose rope event, and the alarm will alarm.

In an embodiment of the present invention, taking one of the wire rope tension automatic balancing suspension devices 1 in the stroke monitoring devices of the wire rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 sends the signal transmitter to the signal transmitter every 10ms. The remote terminal transmits the displacement signal of the piston rod 32 once, the remote terminal receives the displacement signal transmitted by the signal transmitter each time and processes it to obtain the stroke value of the piston rod 32, and the remote terminal sends the previous stroke value of the piston rod 32. Record, after receiving the next stroke value of the next piston rod 32, the remote terminal compares the two stroke values, and judges the increase or decrease state of the stroke of the piston rod 32. If the stroke of the piston rod 32 is now When the amount increases, the slack rope alarm coefficient in the remote terminal increases by 1 and becomes 1. Then, the remote terminal compares the new stroke value received again with the adjacent previous stroke value of the piston rod 32, and judges the piston rod 32 again. The increase or decrease state of the stroke amount, if the stroke amount of the piston rod 32 is still increasing at this time, the slack rope alarm coefficient in the remote terminal will increase by 1 to 2 again. If the stroke amount of the piston rod 32 is reduced at this time, the The loose rope alarm coefficient is directly set to 0. Repeat the above steps, when the slack rope alarm coefficient in the remote terminal reaches the preset value, it means that the wire rope connected to the wire rope tension automatic balance suspension device 1 is in the slack rope state. At this time, the remote terminal controls the alarm to give an alarm, and the staff Repair.

Specifically, in another embodiment of the present invention, when the remote terminal compares the value of the stroke of the piston rod 32 in two adjacent times, it will also perform a specific numerical calculation, and calculate the specific value of each increase or decrease of the stroke. numerical value. When the calculation finds that the value of the received stroke value increases continuously each time, and the amplitude of each increase does not increase, the remote terminal determines that the alarm will be turned on when the slack rope alarm coefficient increases to 4. On the contrary, if the calculation finds that each time The value of the stroke amount received continuously increases, and the amplitude of each increase also increases, the remote terminal determines that the alarm will start when the slack rope alarm coefficient increases to 2, so that the monitoring effect of the stroke monitoring device can be improved. more stable.

Further, as shown in FIG. 6 , the data analysis steps for the remote terminal to determine whether the hydraulic cylinder 3 leaks liquid is as follows:

(1), the remote terminal records the value of the stroke amount of the piston rod 32 received each time;

(2), compare the numerical value of the piston rod 32 stroke amount received each time with the value recorded last time in the remote terminal, and calculate the increase or decrease of the current stroke amount of each piston rod 32.

(3) Add the increase and decrease variation of the stroke amount of each piston rod 32 in a single time to determine whether it is 0.

(4) If the sum of the increase and decrease of the stroke amount of each piston rod 32 is not 0, it is judged that there is a liquid leakage event, and the alarm will alarm.

In an embodiment of the present invention, the wire rope tension automatic balance suspension device 1 is specifically provided with four, that is, there are also four displacement sensors 4, and the four displacement sensors 4 are sent to a remote location through a signal transmitter every 10ms. The terminal transmits the displacement signal of the piston rod 32 once, and the remote terminal receives the displacement signal transmitted by the signal transmitter each time and processes it to obtain the stroke amount of the piston rod 32. The numerical value is recorded, and after receiving the next four piston rods 32 stroke value values, the remote terminal compares and calculates the two stroke values of the same piston rod 32 respectively, and calculates the next piston rod 32. The increase/decrease variation of the stroke amount, after that, the remote terminal will add the increase/decrease variation of the stroke amount of the four piston rods 32 received at the same time. , if it is 0, it means that the hydraulic cylinder 3 has no liquid leakage, if it is not equal to 0, it means that there is liquid leakage in the hydraulic cylinder 3. At this time, the remote terminal controls the alarm to give an alarm, and the staff conducts maintenance.

Further, as shown in FIG. 7 , the data analysis steps for the remote terminal to determine whether the tension is not adjustable in the hydraulic cylinder 3 is as follows:

(1) The maximum stroke and minimum stroke allowed by the piston rod 32 are preset in the remote terminal;

(2), compare the received piston rod 32 stroke amount value with the preset value;

(3) If the stroke value of the piston rod 32 reaches the preset value, it will be judged that the tension cannot be adjusted and the alarm will alarm.

In an embodiment of the present invention, taking one of the wire rope tension automatic balancing suspension devices 1 in the stroke monitoring devices of the wire rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 sends the signal transmitter to the signal transmitter every 10ms. The remote terminal transmits the displacement signal of the piston rod 32 once, and the remote terminal receives the displacement signal transmitted by the signal transmitter each time and processes it to obtain the stroke value of the piston rod 32. The remote terminal is preset with the maximum allowable piston rod 32. The stroke amount and the minimum stroke amount, the remote terminal compares the received stroke amount value of the piston rod 32 with the preset value. If the stroke amount value of the piston rod 32 reaches the preset value, it means that the piston rod of the hydraulic cylinder 3 extends to the preset value. Maximum or minimum, the hydraulic cylinder 3 is already in a state where a cavity is compressed to empty, and the tension of the wire rope connected to it can no longer be increased or decreased, that is, the adjustment effect can no longer be realized. At this time, the remote terminal controls the alarm to give an alarm. staff to repair.

Further, as shown in FIG. 8 , the data analysis steps for the remote terminal to determine whether the hydraulic cylinder 3 is stuck is as follows:

(1) The maximum time value that allows the stroke of the piston rod 32 to remain unchanged is preset in the remote terminal;

(2), the remote terminal records the value of the stroke amount of the piston rod 32 received each time;

(3), compare the value of the piston rod 32 stroke amount received each time with the value recorded last time to judge whether there is a change;

(4), compare the time value in which the value of the stroke amount remains unchanged in continuous time with the preset value;

(5) If the time value reaches the preset value, it will be judged that there is a stuck cylinder event, and the alarm will alarm.

In an embodiment of the present invention, taking one of the wire rope tension automatic balancing suspension devices 1 in the stroke monitoring devices of the wire rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 sends the signal transmitter to the signal transmitter every 10ms. The remote terminal transmits the displacement signal of the piston rod 32 once, and the remote terminal receives the displacement signal transmitted by the signal transmitter each time and processes it to obtain the stroke amount of the piston rod 32. The remote terminal is preset with the stroke amount of the piston rod 32 to allow The maximum time value that remains unchanged; the remote terminal compares the value of the stroke amount of the piston rod 32 received each time with the value recorded last time to determine whether it has changed. When the recorded time value reaches the preset value, it means that the wire rope tension automatic balancing suspension device 1 is in a stuck cylinder state, and the tension of the wire ropes connected to other wire rope tension automatic balancing suspension devices 1 is forced to increase. Dangerous situations are prone to occur. At this time, the remote terminal controls the alarm to alarm, and the staff conducts maintenance. What needs to be added is that if the value of the travel value changes when the recorded value of the travel value is kept constant and the time value does not reach the preset value, the remote terminal will clear the recorded time value until the next time. Re-recording starts when the stroke amount value remains unchanged continuously.

The working process of the present invention is as follows:

During use, several wire ropes are connected to the connecting plate 2 through several wire rope tension automatic balancing suspension devices 1 , and the container to be lifted is hoisted under the connecting plate 2 through a hanger 9 . Each of the wire rope tension automatic balancing suspension devices 1 is provided with a hydraulic cylinder 3 , and hydraulic balance is achieved between the hydraulic cylinder 3 and the hydraulic cylinder 3 through the first connecting pipe 6 , the second connecting pipe 7 and the valve 8 . When the tension of the wire rope connected to the automatic tension balance suspension device 1 is relatively large, the wire rope drives the middle plate 11 of the device to move upward through the wedge-shaped rope ring 15, and the middle plate 11 drives the piston of the hydraulic cylinder 3 in the device. The rod 32 moves upwards synchronously and compresses the hydraulic cylinder 3. The liquid in the hydraulic cylinder 3 flows into the other hydraulic cylinders 3 with lower hydraulic pressure through the first connecting pipe 6, the second connecting pipe 7 and the valve 8 due to the increase in hydraulic pressure. 3 After the internal hydraulic pressure is equal, the liquid will no longer flow to achieve hydraulic balance, and then achieve the balance of wire rope tension. During this working process, each hydraulic cylinder 3 is provided with a displacement sensor 4, and the displacement sensor 4 can monitor the displacement stroke of the piston rod 32 in each hydraulic cylinder 3, and use the signal collector and signal transmitter to monitor the displacement stroke of the piston rod 32 in each hydraulic cylinder 3. It is transmitted to the remote terminal, and the remote terminal processes the received displacement signals to obtain the stroke value of the piston rod 32 and analyzes it. Through the analysis, it can be judged whether the hydraulic cylinder 3 has the phenomenon of loose rope, liquid leakage and unadjustable tension, and correspondingly Display and alarm, and then based on the mutual cooperation of the above mechanisms and methods, ensure the stability, safety and efficiency of the work of the stroke monitoring device of the wire rope tension automatic balance suspension device 1 .

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, so the present invention is not limited to the embodiments described in the specific implementation manner. The other embodiments obtained also belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a wire rope tension automatic balance linkage's stroke monitoring devices which characterized in that: including connecting plate (2) and a plurality of wire rope tension automatic balance linkage (1), have a plurality of wire rope to be connected with connecting plate (2) through a plurality of wire rope tension automatic balance linkage (1), every wire rope tension automatic balance linkage (1) all is provided with a displacement sensor (4) including a pneumatic cylinder (3) in pneumatic cylinder (3), displacement sensor (4) are including fixed connection's signal end (41) and probe end (42), displacement sensor (4) can monitor the displacement regulating variable of wire rope tension automatic balance linkage (1).

2. The stroke monitoring device of the automatic tension balancing and suspending device for the steel wire rope according to claim 1, wherein: the hydraulic cylinder (3) comprises a cylinder barrel (31) and a piston rod (32), a signal end (41) of the displacement sensor (4) is embedded in the bottom of the cylinder barrel (31), the piston rod (32) is of a hollow structure, an annular groove (33) is formed in the end face of the bottom of the piston rod (32), a magnetic ring (43) is fixed in the annular groove (33), a magnetism isolating gasket (44) is arranged between the magnetic ring (43) and the end face of the bottom of the annular groove (33), and a probe end (42) of the displacement sensor (4) penetrates through the magnetic ring (43) to be arranged in the hollow structure.

3. The stroke monitoring device of the automatic tension balancing and suspending device for the steel wire rope according to claim 2, wherein: a signal transmission line (45) is led out from the signal end (41), the signal transmission line (45) is led out to the outside of the hydraulic cylinder (3) through the bottom of the cylinder barrel (31) and is connected to a signal transmitter through a signal collector, the signal transmitter is fixed to the outside of the hydraulic cylinder (3), the signal transmitter is used for transmitting sensor monitoring data to a remote terminal, and the remote terminal is connected with an alarm.

4. The stroke monitoring device of the automatic tension balancing and suspending device for the steel wire rope according to claim 2, wherein: the steel wire rope tension automatic balance suspension device (1) further comprises a middle plate (11), side plates (12) and a reversing fork (13), the middle plate (11) is connected with a wedge-shaped rope ring (15) through a first connecting pin (14), the side plates (12) are arranged on two sides of the middle plate (11), limiting grooves (17) matched with the hydraulic cylinders (3) are formed in the middle plate (11) and the side plates (12), the hydraulic cylinders (3) are arranged in the limiting grooves (17), the bottoms of cylinder barrels (31) of the hydraulic cylinders (3) are fixedly connected with the side plates (12) through pressing plates (16), the top ends of piston rods (32) of the hydraulic cylinders (3) are connected with the groove surfaces of the limiting grooves (17) in the bottom of the middle plate (11), one end of the reversing fork (13) is connected with the bottoms of the side plates (12) through a second connecting pin (18), and the other end of the reversing fork is fixedly connected with, a lifting appliance (9) is connected below the connecting plate (2).

5. A stroke monitoring method applied to a stroke monitoring device of the automatic tension balancing and suspending device for steel wire ropes according to any one of claims 1 to 4, characterized in that:

(1) each displacement sensor (4) measures the stroke amount of each piston rod (32) and sends a displacement signal to a signal emitter;

(2) the signal emitter sends the displacement signal to the remote terminal;

(3) the remote terminal processes the received displacement signals to obtain stroke quantity values of the piston rod (32), analyzes the stroke quantity values and judges whether the hydraulic cylinder (3) has the phenomena of rope loosening, cylinder clamping, liquid leakage and nonadjustable tension;

(4) and the remote terminal displays the stroke amount of each piston rod (32), and controls the alarm to give an alarm if the hydraulic cylinder (3) is judged to work abnormally.

6. The stroke monitoring method of the automatic tension balancing and suspending device for the steel wire rope as claimed in claim 5, wherein the displacement sensor (4) transmits the displacement signal of the piston rod (32) to the remote terminal once every 10ms through the signal transmitter.

7. The stroke monitoring method of the automatic tension balancing and suspending device for the steel wire rope as claimed in claim 6, wherein the data analysis step of the remote terminal for judging whether the hydraulic cylinder (3) is loosened is specifically as follows,

(1) the remote terminal records the stroke quantity value of the piston rod (32) received each time;

(2) the remote terminal compares the stroke quantity value obtained each time with the last recorded value, and judges the increase and decrease state of the stroke quantity of the piston rod (32);

(3) and if the continuous increase times of the stroke quantity is larger than a preset value in the remote terminal, judging that a rope loosening event occurs, and giving an alarm by using an alarm.

8. The stroke monitoring method of the automatic tension balancing and suspending device for the steel wire rope according to claim 6, wherein the data analysis step of the remote terminal for judging whether the hydraulic cylinder (3) has a leakage phenomenon is specifically as follows,

(1) the remote terminal records the stroke quantity value of the piston rod (32) received each time;

(2) comparing the stroke quantity value of the piston rod (32) received each time with the last recorded value in the remote terminal, and calculating the increase and decrease variable quantity of the stroke quantity of each piston rod (32) at present;

(3) and adding the increase and decrease of the stroke amount of each piston rod (32) in a single time to determine whether the sum is 0.

(4) And if the sum of the increase and decrease variable quantities of the stroke quantities of the piston rods (32) is not 0, judging that a liquid leakage event occurs, and giving an alarm.

9. The stroke monitoring method of the automatic tension balancing and suspending device for the steel wire rope according to claim 6, wherein the data analysis step of the remote terminal for judging whether the hydraulic cylinder (3) has the tension non-adjustable phenomenon is specifically as follows,

(1) the maximum stroke amount and the minimum stroke amount allowed by the piston rod (32) are preset in the remote terminal;

(2) comparing the received stroke quantity value of the piston rod (32) with a preset value;

(3) if the stroke quantity value of the piston rod (32) reaches a preset value, the tension non-adjustable event is judged to occur, and an alarm gives an alarm.

10. The stroke monitoring method of the automatic tension balancing and suspending device for the steel wire rope according to claim 6, wherein the data analysis step of the remote terminal for judging whether the hydraulic cylinder (3) is jammed is as follows,

(1) the maximum time value of the stroke amount of the piston rod (32) allowed to be kept unchanged is preset in the remote terminal;

(2) the remote terminal records the stroke quantity value of the piston rod (32) received each time;

(3) comparing the stroke quantity value of the piston rod (32) received each time with the last recorded value to judge whether the change occurs;

(4) comparing the time value of the stroke quantity value in the continuous time, which is kept unchanged, with a preset value;

(5) and if the time value reaches a preset value, judging that a cylinder clamping event occurs, and giving an alarm by using an alarm.

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