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 for automatic tension balancing suspension device of steel wire rope

Technical Field

The invention relates to the technical field of automatic tension balancing and hanging devices for steel wire ropes, in particular to a stroke monitoring method and device for the automatic tension balancing and hanging device for the steel wire ropes.

Background

At present, a multi-rope lifting container of a coal mine basically adopts a hydraulic automatic balance suspension device to realize automatic tension balance of a steel wire rope, the hydraulic automatic balance device realizes pressure balance through communication of different hydraulic cylinder cavities of the device, when the length of the steel wire rope changes, the stress of the connected hydraulic cylinders simultaneously changes, and the balance device is balanced again through the flow of hydraulic media among the different cavities. However, when the hydraulic balance device has the advantage of automatic balance, the conditions of oil leakage, rope loosening, cylinder clamping, non-adjustable tension and the like often occur, and the safety of a coal mine is affected.

At present, often install displacement sensor in order to monitor the stroke volume of piston rod in the pneumatic cylinder on wire rope tension automatic balance linkage in the market, thereby judge whether the tension regulatory function of device can normal use, however, along with wire rope tension automatic balance linkage's live time, influence such as frequency increase and environmental factor, wire rope tension automatic balance linkage often can appear multiple abnormal condition in the use, if can not effectively discern these abnormal condition, then can greatly increased the cost of labor go to overhaul when reducing device work efficiency, consequently, how to all effectively judge these abnormal condition with the normal work and the maintenance in order to guarantee wire rope tension automatic balance linkage later stage be the problem that still need to solve at present.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a stroke monitoring method and device for a steel wire rope tension automatic balancing suspension device.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the invention provides a stroke monitoring device of a steel wire rope tension automatic balance suspension device, which comprises a connecting plate and a plurality of steel wire rope tension automatic balance suspension devices, wherein the steel wire ropes are connected with the connecting plate through the steel wire rope tension automatic balance suspension devices, each steel wire rope tension automatic balance suspension device comprises a hydraulic cylinder, a displacement sensor is arranged in the hydraulic cylinder, the displacement sensor comprises a signal end and a probe end which are fixedly connected, and the displacement sensor can monitor the displacement regulating quantity of the steel wire rope tension automatic balance suspension device.

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

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

Preferably, wire rope tension automatic balance linkage is still including medium plate, curb plate and switching-over fork, the medium plate passes through first connecting pin and links to each other with a wedge becket bridle, the curb plate sets up in the medium plate both sides, all be equipped with on medium plate and the curb plate with pneumatic cylinder assorted spacing recess, the pneumatic cylinder sets up in spacing recess, and clamp plate and curb plate fixed connection are passed through to the cylinder bottom of pneumatic cylinder, and the piston rod top of pneumatic cylinder links to each other with the spacing recess groove face of medium plate bottom, switching-over fork one end passes through the second connecting pin and links to each other bottom the curb plate, and the other end and connecting plate fixed connection, the connecting plate below is connected with a.

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

(1) each displacement sensor measures the stroke amount of each piston rod 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 a numerical value of the stroke quantity of the piston rod, analyzes the numerical value, and judges whether the hydraulic cylinder has the phenomena of rope loosening, cylinder clamping, liquid leakage and nonadjustable tension;

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

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

Preferably, the data analysis step of the remote terminal for judging whether the hydraulic cylinder is loosened is specifically as follows,

(1) the remote terminal records the stroke quantity value of the piston rod 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 piston rod stroke quantity;

(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.

Preferably, the data analysis step of the remote terminal for judging whether the hydraulic cylinder has a leakage phenomenon is specifically as follows,

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

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

(3) and adding the increase and decrease variable quantities of the stroke quantities of the piston rods in a single time to judge whether the sum is 0 or not.

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

Preferably, the data analysis step of the remote terminal for judging whether the tension of the hydraulic cylinder is not adjustable is as follows,

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

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

(3) and if the stroke quantity value of the piston rod reaches a preset value, judging that an event with non-adjustable tension occurs, and giving an alarm by using an alarm.

Preferably, the data analysis step of the remote terminal for judging whether the hydraulic cylinder is jammed is as follows,

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

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

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

(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.

The invention has the advantages and positive effects that:

(1) the method and the device provided by the invention can monitor and judge various abnormal states (liquid leakage, rope loosening, cylinder clamping and non-adjustable tension) of the automatic tension balancing and hanging device of the steel wire rope, so that a worker can find problems and effectively debug the problems more timely, the working efficiency is improved, and the labor cost is reduced.

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

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of the internal structure of the hydraulic cylinder of the present invention;

FIG. 3 is a schematic structural view of the automatic tension balancing suspension system of the present invention;

fig. 4 is a schematic structural view of the spreader of the present invention;

FIG. 5 is a flow chart of a method of determining a rope slackening event according to the present invention;

FIG. 6 is a flow chart of a method of determining a weep event in accordance with the present invention;

FIG. 7 is a flow chart of a method of determining a tension non-adjustable event according to the present invention;

FIG. 8 is a flow chart of a method of determining a stuck cylinder event in accordance with the present invention.

In the figure: 1. a steel wire rope tension automatic balance suspension device; 2. a connecting plate; 3. a hydraulic cylinder; 4. a displacement sensor; 5. a pressure sensor; 6. a first connecting pipe; 7. a second connecting pipe; 8. a valve; 9. a spreader; 10. an arc-shaped pressing block;

11. a middle plate; 12. a side plate; 13. a reversing fork; 14. a first connecting pin; 15. a wedge-shaped rope ring; 16. pressing a plate; 17. a limiting groove; 18. a second connecting pin;

31. a cylinder barrel; 32. a piston rod; 33. an annular groove;

41. a signal terminal; 42. a probe end; 43. a magnetic ring; 44. a magnetic isolation gasket; 45. a signal transmission line;

81. a third fixing plate; 82. a fourth fixing plate; 83. a second threaded fixing hole;

91. a connecting frame; 92. a first plywood; 93. a second plywood; 94. a first fixing plate; 95. a second fixing plate; 96. a first threaded fixing hole; 97. lightening holes; 98. a first connection hole; 99. and a third connecting hole.

Detailed Description

The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, 2 and 3, the invention provides a stroke monitoring device for a steel wire rope tension automatic balance suspension device, which comprises a connecting plate 2 and a plurality of steel wire rope tension automatic balance suspension devices 1, wherein the plurality of steel wire ropes are connected with the connecting plate 2 through the plurality of steel wire rope tension automatic balance suspension devices 1, each steel wire rope tension automatic balance suspension device 1 comprises a hydraulic cylinder 3, a displacement sensor 4 is arranged in the hydraulic cylinder 3, the displacement sensor 4 comprises a signal end 41 and a probe end 42 which are fixedly connected, and the displacement sensor 4 can monitor displacement adjustment quantity of the steel wire rope tension automatic balance suspension device 1. It is necessary to supplement that the displacement sensor 4 is a magnetostrictive liquid level sensor, and the magnetostrictive liquid level sensor adopts a non-contact measurement mode, so that the magnetostrictive liquid level sensor is not easily influenced by the medium in the hydraulic cylinder 3, and the measurement stability is improved.

Specifically, a plurality of steel wire ropes are connected with a connecting plate 2 through a plurality of steel wire rope tension automatic balance hanging devices 1, each steel wire rope is correspondingly connected with one steel wire rope tension automatic balance hanging device 1, a container to be lifted is hung below the connecting plate 2, the steel wire rope tension automatic balance hanging devices 1 are used for adjusting the tension of the steel wire rope connected with the steel wire rope through the telescopic motion of an internal hydraulic cylinder 3, the tension of each steel wire rope is kept consistent after adjustment, and then the end face of the container to be lifted is kept in a horizontal state, so that the steel wire ropes are stably lifted. It should be added that the number of the automatic tension balancing and suspending devices 1 for the steel wire ropes and the steel wire ropes should be selected according to practical application conditions.

Further, as shown in fig. 1, 2, and 3, the hydraulic cylinder 3 includes a cylinder 31 and a piston rod 32, a signal end 41 of the displacement sensor 4 is embedded in the bottom of the cylinder 31, the piston rod 32 is of a hollow structure, an annular groove 33 is formed in an end surface of the bottom of the piston rod 32, a magnetic ring 43 is fixed in the annular groove 33, a magnetic spacer 44 is disposed between the magnetic ring 43 and the end surface of the bottom of the annular groove 33, and a probe end 42 of the displacement sensor 4 penetrates through the magnetic ring 43 and is disposed in the hollow structure. The magnetic isolation gasket 44 is used for separating the magnetic ring 43 from the piston rod 32, so that magnetic leakage and other events are prevented, and the stability of measurement is further improved.

Further, as shown in fig. 1, fig. 2, and fig. 3, 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 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 collector is used for collecting an analog signal sent by the signal transmission line 45 and sending the analog signal to the signal transmitter, the signal transmitter is used for sending the received signal to a remote terminal, and the remote terminal is connected to an alarm. It should be added that a sealing device is arranged at the joint of the signal transmission line 45 and the bottom of the cylinder 31, the sealing device can be a sealing ring, and other sealing structures can be selected according to actual conditions, so as to prevent the hydraulic cylinder 3 from leaking. And the signal transmission lines 45 in the automatic tension balancing suspension devices 1 of the steel wire ropes are all connected to the same signal emitter through signal collectors.

In an embodiment of the present invention, the piston rod 32 may drive the magnetic ring 43 to reciprocate outside the probe end 42 of the displacement sensor 4, the probe end 42 generates a corresponding pulse signal according to the displacement of the magnetic ring 43 based on a principle of magnetostriction measurement, and transmits the pulse signal to the signal end 41, a detection circuit is disposed in the signal end 41, the detection circuit may determine the displacement amount of the magnetic ring 43 by analyzing and calculating the pulse signal, and then the detection circuit transmits the displacement signal to the signal transmitter through the signal collector, and the signal transmitter may transmit the displacement signal to a remote terminal through wireless transmission for a worker to check in real time.

Further, as shown in fig. 1, 3, and 4, the automatic tension balancing suspension device 1 for a steel wire rope further includes a middle plate 11, a side plate 12, and a reversing fork 13, where the middle plate 11 is connected to a wedge-shaped rope ring 15 through a first connecting pin 14, the side plate 12 is disposed on two sides of the middle plate 11, the middle plate 11 and the side plate 12 are both provided with a limiting groove 17 matched with the hydraulic cylinder 3, the hydraulic cylinder 3 is disposed in the limiting groove 17, the bottom of a cylinder 31 of the hydraulic cylinder 3 is fixedly connected to the side plate 12 through a pressing plate 16, the top end of a piston rod 32 of the hydraulic cylinder 3 is connected to a groove surface of the limiting groove 17 at the bottom of the middle plate 11, one end of the reversing fork 13 is connected to the bottom of the side plate 12 through a second connecting pin 18, the other end of the reversing fork. It is to be supplemented that the wedge rope ring 15 is connected with a steel wire rope, the wedge rope ring 15 is used for connecting the steel wire rope with the steel wire rope tension automatic balancing suspension device 1, and the signal emitter is specifically fixed on one side of the side plate 12.

It should be added that, as shown in fig. 1 and fig. 3, a first connecting pipe 6 is connected to a position, close to a pressure plate 16, of each hydraulic cylinder 3 of each automatic tension balancing and hanging device 1, the first connecting pipe 6 is communicated with the first connecting pipe 6 through a second connecting pipe 7, a valve 8 is arranged at a joint of the first connecting pipe 6 and the second connecting pipe 7, and hydraulic balance among the hydraulic cylinders 3 is achieved through the first connecting pipe 6, the second connecting pipe 7 and the valve 8. And a pressure sensor 5 for detecting oil pressure is arranged on the second connecting pipe 7, the pressure sensor 5 is connected to the signal emitter through a signal collector, the pressure sensor 5 is used for detecting the oil pressure of the automatic tension balancing suspension device 1 for the steel wire rope and sending an oil pressure signal to the signal emitter through the signal collector, the signal emitter receives the oil pressure signal and sends the oil pressure signal to a remote terminal, and the oil pressure sensor is used for assisting the displacement sensor 4 to monitor the working state of the automatic tension balancing suspension device 1 for the steel wire rope.

In an embodiment of the present invention, four automatic wire rope tension balancing suspension devices 1 are specifically provided, and when the wire rope tension connected to one of the automatic wire rope tension balancing suspension devices 1 is large, for the automatic wire rope tension balancing suspension device 1, there are:

the middle plate 11 is driven by the steel wire rope through the wedge rope ring 15 to move upwards due to high tension, and the top end of the piston rod 32 of the hydraulic cylinder 3 is connected with the groove surface of the limiting groove 17 at the bottom of the middle plate 11, so that the piston rod 32 of the hydraulic cylinder 3 and the middle plate 11 synchronously move upwards in the moving process of the middle plate 11, the hydraulic cylinder 3 is compressed, and the hydraulic pressure in the hydraulic cylinder 3 is increased. And because the hydraulic cylinders 3 are communicated with the valve 8 through the first connecting pipe 6 and the second connecting pipe 7, the liquid in the hydraulic cylinder 3 with increased hydraulic pressure automatically flows into other hydraulic cylinders 3 with lower pressure through the first connecting pipe 6, the second connecting pipe 7 and the valve 8 until the liquid in each hydraulic cylinder 3 does not flow any more to realize hydraulic balance after the hydraulic pressure in each hydraulic cylinder 3 is equal, in the process, the liquid in the hydraulic cylinder 3 with lower pressure is increased to drive the corresponding piston rod 32 to extend, and in the process of extending the piston rod 32, the middle plate 11 drives the steel wire rope to downwards increase the tension until the tension is equal to the tension of the steel wire rope with higher tension in the previous process, so that the tension balance of the steel wire. In the working process, the pressure sensor 5 monitors the oil pressure in the second connecting pipe 7 and sends 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 be a skip, a cage or a bucket, and the skip and the cage are usually lifted by a plurality of steel wire ropes provided with a balancing device, and the bucket is selected as single-rope lifting, and in the single-rope lifting process, the bucket is easy to rotate or shift, thereby affecting the lifting effect, and the use cost of the mine operation is greatly increased by the single-rope and multi-rope lifting two sets of devices, so the invention adds a lifting appliance 9 between the connecting plate 2 and the container to be lifted, and the lifting appliance 9 is adapted to all three lifting containers, namely the skip, the cage or the bucket.

Specifically, hoist 9 is including a link 91, link 91 is the square frame shape of opening down, the relative first open-close board 92 and the second open-close board 93 that is provided with in link 91 both sides, first open-close board 92 and second open-close board 93 are articulated with link 91 respectively, first open-close board 92 is one-way opening and shutting and the opposite direction of opening and shutting with second open-close board 93. First open-close plate 92 and second open-close plate 93 are close to link span 91 opening part one end and are provided with first fixed plate 94 and second fixed plate 95 in a crossing way, link span 91 opening part one end is kept away from with second open-close plate 93 to first open-close plate 92 and second open-close plate 93 is provided with third fixed plate 81 and fourth fixed plate 82 in a crossing way, be equipped with the first thread fixing hole 96 of matched with on first fixed plate 94 and the second fixed plate 95, be equipped with matched with second thread fixing hole 83 on third fixed plate 81, fourth fixed plate 82 and link span 91, first fixed plate 94 and second fixed plate 95 accessible bolt pass first thread fixing hole 96 and fix, third fixed plate 81, fourth fixed plate 82 and link span 91 accessible bolt pass second thread fixing hole 83 and fix, after first open-close plate 92 and second open-close plate 93 both ends are all fixed, first open-close plate 92, The second opening plate 93 and the longitudinal section of the connecting frame 91 are kept on the same plane, and the first opening plate 92, the second opening 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 plate 92 and the second opening plate 93 are both provided with lightening holes 97 having a triangular structure, and the third fixing plate 81 and the fourth fixing plate 82 are designed to enable one ends of the first opening plate 92 and the second opening plate to be fixedly connected with the connecting frame 91 when in use, so that the connecting frame 91 can bear the load with the first opening plate 92 and the second opening plate 93 at the same time, thereby ensuring the stability of the hanger 9 during operation. It should be added that a plurality of first connecting holes 98 are formed in the transverse plate above the connecting frame 91, and second connecting holes matched with the first connecting holes 98 are formed in the corresponding positions of the connecting plate 2, so that the connecting plate 2 and the connecting frame 91 are fixedly connected. First open close plate 92, second open close plate 93 one side and link 91 both sides are equipped with a plurality of third connecting holes 99, third connecting hole 99 cooperatees with the connecting hole for the promotion that the container specifically is skip, cage to be promoted to realize hoist 9 and the fixed connection who treats the promotion container. It should be emphasized that the length of the connecting frame 91 should be selected according to actual conditions, and the number of the lifting devices 9 should also be selected according to actual conditions, specifically, for example, a single lifting device 9 may be selected when lifting a bucket, a plurality of groups of lifting devices 9 may be selected for common use when lifting a skip and a cage, or a single lifting device 9 may be selected for use.

In the first embodiment of the present invention, when the container to be lifted is a skip or a cage, the first opening plate 92 and the second opening plate 93 are directly fixed by the first fixing plate 94 and the second fixing plate 95, and the third fixing plate 81 and the fourth fixing plate 82, one end of the lifting tool 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 lifting tool 9 is fixed to the skip or the cage through the connecting frame 91, the first opening plate 92 and the third connecting hole 99 on the second opening plate 93, and then lifting is started through the wire rope, so that the skip or the cage is lifted by the lifting tool 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, and the bolts on the third fixing plate 81 and the fourth fixing plate 82 are loosened to separate them, then the hanging ring on the bucket moves to a position between two ends of the first opening plate 92 and the second opening plate 93, the first opening plate 92 and the second opening plate 93 are fixed by the first fixing plate 94 and the second fixing plate 95, and the third fixing plate 81 and the fourth fixing plate 82, the hanging ring is attached to the first fixing plate 94, and then the hanging ring is fixed between the arc pressing block 10 and the first fixing plate 94 by an arc pressing block 10, and the arc pressing block 10 is fixed above the first fixing plate 94 by the bolts, thereby achieving the fixed connection of the hanger 9 and the bucket. After the upper part of the lifting appliance 9 is fixedly connected with the connecting plate 2 through the first connecting hole 98 on the connecting frame 91, the lifting is carried out through a steel wire rope, so that the lifting bucket is lifted through the lifting appliance 9.

In the third embodiment of the present invention, the first connection hole 98 on the lifting appliance 9 may be replaced by a mounting hole matched with the automatic tension balancing suspension device 1 for the wire rope, that is, the lifting appliance 9 may replace the connection plate 2 to be directly and fixedly connected with the automatic tension balancing suspension device 1 for the wire rope, and whether the connection plate 2 is arranged between the automatic tension balancing suspension device 1 for the wire rope and the lifting appliance 9 or not should be determined according to actual requirements.

The invention also provides a stroke monitoring method of the stroke monitoring device applied to the steel wire rope tension automatic balance suspension device 1, which comprises the following steps:

(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 a numerical value of the stroke quantity of the piston rod 32, analyzes the numerical value, 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 an alarm to give an alarm if the hydraulic cylinder 3 is judged to work abnormally.

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

Further, as shown in fig. 5, the data analysis step of the remote terminal for determining whether the hydraulic cylinder 3 is loosened is specifically as follows,

(1) the remote terminal records the numerical value of the stroke quantity 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.

In an embodiment of the present invention, taking one of the rope tension automatic balancing suspension devices 1 in the stroke monitoring device of the rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 transmits a displacement signal of the piston rod 32 to a remote terminal every 10ms through a signal transmitter, the remote terminal receives and processes the displacement signal transmitted by each signal transmitter to obtain a stroke quantity value of the piston rod 32, the remote terminal records the stroke quantity value of the piston rod 32 at the previous time, after receiving the stroke quantity value of the piston rod 32 at the next time, the remote terminal compares the stroke quantity values at the two times to judge the increase and decrease state of the stroke quantity of the piston rod 32, if the stroke quantity of the piston rod 32 at the current time is increased, the rope loosening alarm coefficient in the remote terminal is increased by 1 to 1, then the remote terminal compares the new stroke quantity value received again with the stroke quantity value of the piston rod 32 at the previous time, judges the increase and decrease state of the stroke quantity of the piston rod 32 again, and if the stroke quantity of the piston rod 32 at the current time is still increased, the rope slacking alarm coefficient in the remote terminal is increased by 1 again to 2, and if the stroke amount of the piston rod 32 is reduced at this time, the rope slacking alarm coefficient in the remote terminal is directly set to 0. And repeating the steps, and when the rope loosening alarm coefficient in the remote terminal reaches a preset value, showing that the steel wire rope connected with the steel wire rope tension automatic balance suspension device 1 is in a rope loosening state, controlling an alarm to give an alarm by the remote terminal, and overhauling by a worker.

Specifically, in another embodiment of the present invention, when the remote terminal compares the stroke amount values of the piston rod 32 of two adjacent times, the remote terminal will also perform specific numerical calculation to obtain a specific numerical value of each increased or decreased stroke. When the calculation finds that the received stroke quantity value is continuously increased every time, and the increased amplitude value is not increased gradually every time, the alarm is started when the rope loosening alarm coefficient is increased to 4 in the remote terminal, otherwise, if the calculation finds that the received stroke quantity value is continuously increased every time, and the increased amplitude value is also increased every time, the alarm is started when the rope loosening alarm coefficient is increased to 2 in the remote terminal, so that the monitoring effect of the stroke monitoring device is more stable.

Further, as shown in fig. 6, the data analysis step of the remote terminal for determining whether the hydraulic cylinder 3 has a leakage phenomenon is specifically as follows,

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

(2) comparing the stroke quantity value of each piston rod 32 received in each time with the value recorded in the last time 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 amounts of the stroke amounts of the respective piston rods 32 in a single time to determine whether or not 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.

In an embodiment of the present invention, the automatic tension balancing and suspending device 1 for a steel wire rope is specifically provided with four displacement sensors 4, that is, four displacement sensors 4 are also provided, the four displacement sensors 4 transmit displacement signals of the piston rods 32 to a remote terminal every 10ms, the remote terminal receives and processes the displacement signals transmitted by each signal transmitter to obtain stroke quantity values of the piston rods 32, the remote terminal records the stroke quantity values of the four piston rods 32 of the previous time, after receiving the stroke quantity values of the four piston rods 32 of the next adjacent time, the remote terminal respectively compares and calculates the stroke quantity values of the same piston rod 32 twice, calculates an increase and decrease variation quantity of the stroke quantity of the piston rod 32 of the next time, and then adds the increase and decrease variation quantities of the stroke quantities of the four piston rods 32 received at the same time to be positive, and (3) if the reduction amount is negative, judging whether the result is 0, if so, indicating that the hydraulic cylinder 3 has no leakage, and if not, indicating that the hydraulic cylinder 3 has leakage, and controlling an alarm to give an alarm by the remote terminal, and carrying out maintenance by a worker.

Further, as shown in fig. 7, the data analysis step of the remote terminal for determining whether the tension of the hydraulic cylinder 3 is not adjustable is 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) and if the stroke quantity value of the piston rod 32 reaches a preset value, judging that an event with non-adjustable tension occurs, and giving an alarm by using an alarm.

In an embodiment of the present invention, taking one of the rope tension automatic balancing suspension devices 1 in the stroke monitoring device of the rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 transmits a displacement signal of the piston rod 32 to a remote terminal every 10ms through a signal transmitter, the remote terminal receives and processes the displacement signal transmitted by the signal transmitter every time to obtain a stroke quantity value of the piston rod 32, the maximum stroke quantity and the minimum stroke quantity allowed by the piston rod 32 are preset in the remote terminal, the remote terminal compares the received stroke quantity value of the piston rod 32 with a preset value, if the stroke quantity value of the piston rod 32 reaches the preset value, the piston rod of the hydraulic cylinder 3 stretches out to the maximum or minimum, the hydraulic cylinder 3 is in a state that a certain cavity is compressed to be empty, the tension of a steel wire rope connected with the hydraulic cylinder cannot be increased or reduced, namely the adjustment effect cannot be realized, the remote terminal controls an alarm to give an alarm, and a worker overhauls the hydraulic cylinder.

Further, as shown in fig. 8, the data analysis step of the remote terminal for determining whether the hydraulic cylinder 3 is stuck is specifically as follows,

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

(2) the remote terminal records the numerical value of the stroke quantity 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 stroke quantity value changes;

(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.

In an embodiment of the present invention, taking one of the rope tension automatic balancing suspension devices 1 in the stroke monitoring device of the rope tension automatic balancing suspension device 1 as an example: the displacement sensor 4 transmits a displacement signal of the piston rod 32 to the remote terminal every 10ms through the signal transmitter, the remote terminal receives and processes the displacement signal transmitted by the signal transmitter every time to obtain a stroke quantity value of the piston rod 32, and a maximum time value for allowing the stroke quantity of the piston rod 32 to be kept unchanged is preset in the remote terminal; the remote terminal compares the 32 stroke quantity numerical values of the piston rod received every time with the numerical values recorded last time to judge whether the change occurs, if the change does not occur, the time value of the stroke quantity numerical values continuously keeping unchanged is recorded, after the recorded time value reaches a preset value, the automatic tension balancing suspension device 1 of the steel wire rope shows a clamping cylinder state at the moment, the tension of the steel wire rope connected with the automatic tension balancing suspension device 1 of other steel wire ropes is forced to increase, dangerous conditions are easy to occur, the remote terminal controls an alarm to give an alarm at the moment, and a worker overhauls the steel wire rope. It is to be added that, if the recorded time value of the stroke quantity value continuously remains unchanged does not reach the preset value, the remote terminal will clear the recorded time value and start to record again until the next time the stroke quantity value continuously remains unchanged.

The working process of the invention is as follows:

in the use, have a plurality of wire rope to be connected with connecting plate 2 through a plurality of wire rope tension automatic balance linkage 1, hoist and mount through hoist 9 and remain to promote the container below connecting plate 2. Each steel wire rope tension automatic balance suspension device 1 is internally provided with a hydraulic cylinder 3, and hydraulic balance between the hydraulic cylinder 3 and the hydraulic cylinder 3 is realized through a first connecting pipe 6, a second connecting pipe 7 and a valve 8. When the tension of the steel wire rope connected with one steel wire rope tension automatic balance suspension device 1 is large, the steel wire rope drives the middle plate 11 which drives the device to move upwards through the wedge-shaped rope ring 15, the middle plate 11 drives the piston rod 32 of the hydraulic cylinder 3 in the device to synchronously move upwards and compress the hydraulic cylinder 3, liquid in the hydraulic cylinder 3 flows into other hydraulic cylinders 3 with small hydraulic pressure through the first connecting pipe 6, the second connecting pipe 7 and the valve 8 due to hydraulic increase, and the liquid does not flow any more after the hydraulic pressure in each hydraulic cylinder 3 is equal, so that the hydraulic balance is realized, and further the tension balance of the steel wire rope is realized. In the working process, all be equipped with a displacement sensor 4 in each pneumatic cylinder 3, displacement sensor 4 can monitor the piston rod 32 displacement stroke in each pneumatic cylinder 3 to signal collector and signal transmitter transmission to remote terminal, remote terminal carries out the analysis after handling a plurality of displacement signals received and obtain piston rod 32 stroke volume numerical value, can judge whether the pneumatic cylinder 3 takes place the phenomenon of slack rope, weeping and tension unadjustable and carry out corresponding demonstration and warning through the analysis, and then based on the mutual cooperation of above each mechanism and method, guaranteed the stability, the security and the efficiency of the stroke monitoring devices of wire rope tension automatic balance linkage 1.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the 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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