The content of invention:
A kind of top board displacement monitor of the present invention based on pretightning force, purpose is to solve urgent problem in the present Mine Safety in Production, thereby provide a kind of quick accurately, top board displacement monitor that the scope of application is extensive based on pretightning force.
A kind of top board displacement monitor of the present invention based on pretightning force, it is characterized in that it consists of: by the first semicircle pressing plate 1, cylinder body 2, magnetic induction length measuring instrument 3, first sealing ring 4, second sealing ring 5, inlet for pressurised gas check valve assembly 6, base plate 7, shielding protection data line 8, power line 9, Compressed Gas outlet pressure limiting valve assembly 10, magnet ring compresses flat recess swivel nut 11, magnet ring 12, the second semicircle pressing plate 13, top board piston 14, hydraulic oil import check valve assembly 15 and hydraulic oil outlet pressure limiting valve assembly 16 is formed, in above-mentioned each ingredient except magnetic induction length measuring instrument 3, first sealing ring 4, second sealing ring 5, the material of shielding protection data line 8 and power line 9 outer all the other components and parts is metal material; The shape of each ingredient is as follows: the first semicircle pressing plate 1 be one with holes so that wear half hollow cylinder plate of screw; Cylinder body 2 is under one base plate to be arranged, on the box cavity structure of two coaxial hollow cylinders is arranged, big hollow cylinder on its base plate top is exactly the main body of cylinder body 2, its cylinder body 2 inner surfaces are placed top board piston 14, its cylinder body 2 upper ends are provided with internal thread hole, be screwed into screw when connecting the first semicircle pressing plate 1 and the second semicircle pressing plate 13, the total hole count that will wear screw on the quantity of the internal thread hole of cylinder body 2 and the first semicircle pressing plate 1 and the second semicircle pressing plate 13 equates, hollow cylinder of each projection about cylinder body position on the lower side, on the hole of the hollow cylinder of two projections, be carved with internal thread, have identical screw thread key element so that screw on but all be externally threaded inlet for pressurised gas check valve assembly 6 and Compressed Gas outlet pressure limiting valve assembly 10, be carved with several screwed holes on the base plate of cylinder body 2 bottoms, connect another ingredient base plate 7, the groove that is carved with a cuboid on the base plate of cylinder body 2 bottoms is laid shielding protection data line 8 and power line 9, in the middle of cylinder body 2 from the end on porose, in the hole end of to another ingredient magnetic induction length measuring instrument 3 of last insertion; Magnetic induction length measuring instrument 3 is made up of magnetic induction device and electric wire, puts a hollow cylinder that plays the protection sealing function; First sealing ring 4 and second sealing ring 5 are exactly the O RunddichtringO, be shaped as the anchor ring shape, in two grooves up and down that are nested in that the cylinder two ends of top board piston 14 bottoms are carved, because of the material of sealing ring is the flexible material of rubber-like, so the shape decision of its two grooves being carved by the cylinder two ends of top board piston 14 bottoms in the shape of this device; Inlet for pressurised gas check valve assembly 6 is Pneumatic assemblies commonly used, and its main body is a hollow cylinder, processes gas thread at the place, two ends of cylinder external surface, and its internal cavities is equipped with ball sealer, pressure ball lid, compression spring and spring pressure Adjusting bolt Adjusting screw; Base plate 7 be one with several holes so that penetrate the cylindrical flat board of screw, on it on number in hole and cylinder body 2 lower rafts number of screw equate; Shielding protection data line 8 is cables of industrial controlling; Power line 9 is electric supply lines; Compressed Gas outlet pressure limiting valve assembly 10 is Pneumatic assemblies commonly used, and its main body is a hollow cylinder, processes gas thread at the place, two ends of cylinder external surface, and its internal cavities is equipped with ball sealer, pressure ball lid, compression spring and spring pressure Adjusting bolt Adjusting screw; It is that an end has flat recess to be convenient to the hollow swivel nut that screwdriver is regulated that magnet ring compresses flat recess swivel nut 11, carves external screw thread on its outer cylinder surface, and this screw thread is identical with the key element of the internal thread that top board piston 14 is carved below; Magnet ring 12 is magnetic hollow cylinders; The second semicircle pressing plate 13 be one with holes so that wear half hollow cylinder plate of screw; Top board piston 14 is to have cylinder panel, a centre to be hollow cylinders, down a hollow cylinder bigger than this hollow cylinder to be arranged on one, be carved with respectively at the upper and lower position of this cylinder and put the groove that sealing ring is used, hollow cylinder inner surfaces below this top board piston 14 are carved with internal thread, have identical screw thread but compress flat recess swivel nut 11 for externally threaded magnet ring so that screw on; The annexation and the installation process of each assembly are as follows: as shown in Figure 1, magnet ring 12 is seated in the internal thread pit of top board piston 14 bottoms, the magnet ring of screwing on compresses flat recess swivel nut 11, by magnet ring compress flat recess swivel nut 11 fixedly magnet ring 12 in the internal thread pit of top board piston 14 bottoms, sealing ring 4 and sealing ring 5 are strutted and push away among the groove that is placed on top board piston 14 lower cylindrical bodies, then with top board piston 14 and be positioned on all components and parts magnet ring 12 on the top board piston 14, magnet ring compresses flat recess swivel nut 11, sealing ring 4 together pushes away in the hollow cylinder hole that is put in cylinder body 2 with sealing ring 5, cover the first semicircle pressing plate 1 and the second semicircle pressing plate 13, the first semicircle pressing plate 1 and the second semicircle pressing plate 13 are screwed in the top of cylinder body 2, insert magnetic induction length measuring instrument 3 from cylinder body 2 bottoms, and shielding protection data line 8 that will be connected and suitable being placed in the groove of cylinder body 2 bottoms of power line 9 pendulum with magnetic induction length measuring instrument 3, cover base plate 7, base plate 7 is screwed on the base plate of cylinder body 2 bottoms, screw on inlet for pressurised gas check valve assembly 6 and Compressed Gas outlet pressure limiting valve assembly 10 on the internal thread at the cylinder position of cylinder body 2 left and right sides projections, 6 connections of inlet for pressurised gas check valve assembly are gone up pipeline so that be pressed into Compressed Gas by pipeline during on-the-spot the use, Compressed Gas outlet pressure limiting valve assembly 10 is connecting pipe not, at this moment Compressed Gas directly is emptied in the air by Compressed Gas outlet pressure limiting valve assembly 10 and goes, and finishes connection by above step.
Above-mentioned a kind of top board displacement monitor based on pretightning force, it is characterized in that described inlet for pressurised gas check valve assembly 6 also can be hydraulic oil import check valve assembly 15, Compressed Gas outlet pressure limiting valve assembly 10 also can be hydraulic oil outlet pressure limiting valve assembly 16, hydraulic oil import check valve assembly 15 connecting pipes are so that send into hydraulic oil by the hydraulic oil pipeline during on-the-spot the use, connect the hydraulic oil reflux line on hydraulic oil outlet check valve assembly 16 external screw threads, reflux along pipeline for hydraulic oil.
A kind of top board displacement monitor of the present invention based on pretightning force, its operating principle and implementation process are divided into two kinds of situations according to the situation of on-the-spot working medium: 1, used medium is the situation of Compressed Gas: the Compressed Gas that has a certain pressure enters the cavity that is positioned at the cylinder body 2 below the top board piston 14 from air compressor machine and the corresponding compressed gas feed check valve assembly 6 of connecting pipe thereof, top board piston 14 contacts with tested top board at the cylinder panel that rises above top board piston 14 under the effect of compressed air pressure, along with Compressed Gas constantly enters in the chamber of cylinder body 2 bottoms from inlet for pressurised gas check valve assembly 6, guaranteed that at first the cylinder panel above the top board piston 14 contacts all the time with tested top board, constantly enter along with Compressed Gas and also make the pressure of the Compressed Gas in cylinder body 2 lower chamber constantly increase in the chamber of cylinder body 2 bottoms, export the adjusting pressure of pressure limiting valve assembly 10 greater than Compressed Gas when the pressure of Compressed Gas, be that the pressure of Compressed Gas is during greater than the spring force in the Compressed Gas outlet pressure limiting valve assembly 10, the ball sealer that Compressed Gas backs down Compressed Gas outlet pressure limiting valve assembly 10 is discharged in the air and goes, be carved with flat recess on the swivel nut of inlet for pressurised gas check valve assembly 6 and Compressed Gas outlet pressure limiting valve assembly 10 and be used for the elastic force that regulating spring suppresses ball sealer, when crushing, Compressed Gas in top board piston 14 lower chamber goes along with the compressed gas vent pressure limiting valve of moving down of top board assembly 10 is discharged in the air, this moment, top board piston 14 was descending, the magnet ring 12 of top board piston 14 bottoms is descending thereupon, the change in displacement of magnet ring 12 gets on owing to the effect of magnetic induction is reacted to magnetic induction length measuring instrument 3, because the measuring element of magnetic induction length measuring instrument 3 has carried out segment processing in advance, each segmentation all has unique reasonable coding, the degree of its segmentation segmentation has reached the rank of micron, magnetic induction length measuring instrument 3 will produce corresponding different coding signal when magnet ring 12 arrives each segmentation position, this signal is delivered to relevant monitoring instrument equipment and gets on to store by being connected in shielding protection data line 8 on the magnetic induction length measuring instrument 3, analyze and handle, power line 9 provides the electric power support for magnetic induction length measuring instrument 3.2, used medium is the hydraulic pressure oil condition: the hydraulic oil that has certain pressure is from hydraulic oil container, pump and corresponding connecting pipe thereof enter the cavity that is positioned at the cylinder body 2 below the top board piston 14 through hydraulic oil import check valve assembly 15, top board piston 14 contacts with tested top board at the cylinder panel that rises above top board piston 14 under the effect of hydraulic fluid pressure, along with hydraulic oil constantly enters in the chamber of cylinder body 2 bottoms from hydraulic oil import check valve assembly 15, guaranteed that at first the cylinder panel above the top board piston 14 contacts all the time with tested top board, constantly enter along with hydraulic oil and also make the pressure of the hydraulic oil in cylinder body 2 lower chamber constantly increase in the chamber of cylinder body 2 bottoms, export the adjusting pressure of pressure limiting valve assembly 16 greater than hydraulic oil when the pressure of hydraulic oil, be that the pressure of hydraulic oil is during greater than the spring force in the hydraulic oil outlet pressure limiting valve assembly 16, hydraulic oil backs down the ball sealer of hydraulic oil outlet pressure limiting valve assembly 16, through flowing back to the container of hydraulic oil along pipeline in, goes by hydraulic oil outlet pressure limiting valve assembly 16, be carved with flat recess on the swivel nut of hydraulic oil import check valve assembly 15 and hydraulic oil outlet pressure limiting valve assembly 16 and be used for the elastic force that regulating spring suppresses ball sealer, when crushing, hydraulic oil in top board piston 14 lower chamber little by little flows back in the hydraulic oil container through hydraulic oil outlet pressure limiting valve assembly 16 and connecting pipe thereof and to go along with moving down of top board, this moment, top board piston 14 was descending, the magnet ring 12 of top board piston 14 bottoms is descending thereupon, the change in displacement of magnet ring 12 gets on owing to the effect of magnetic induction is reacted to magnetic induction length measuring instrument 3, because the measuring element of magnetic induction length measuring instrument 3 has carried out segment processing in advance, each segmentation all has unique reasonable coding, the degree of its segmentation segmentation has reached the rank of micron, magnetic induction length measuring instrument 3 will produce corresponding different coding signal when magnet ring 12 arrives each segmentation position, this signal is delivered to relevant monitoring instrument equipment and gets on to store by being connected in shielding protection data line 8 on the magnetic induction length measuring instrument 3, analyze and handle, power line 9 provides the electric power support for magnetic induction length measuring instrument 3.
A kind of top board displacement monitor of the present invention based on pretightning force, its advantage is as follows:
This monitoring tool is a kind ofly to have at any time on-line monitoring, measure accurately and the extensive measurement mechanism of the scope of application; with respect to existing measureing equipment, but have on-line monitoring at any time, signal remote transmission, measure accurately, range is big, applied widely, few easy workout part, can be in adverse circumstances such as high pressure-temperature high humidity normally use, standard component and part commonly used is many, now make components and parts few, carry out the advantage of seriation, scale and standardized production easily.Because magnetic induction length measuring instrument 3 science; ingenious and accurately the micron order segment encoding handle; make the certainty of measurement that is reached reach micron-sized level; because the difference of its measuring principle; existing measureing equipment does not just reach so high certainty of measurement; the precision that present existing measureing equipment can reach is 2 grades; YHW150 top board displacement monitoring alarm for example; or basic accuracy is 2%; SHX50GDY-306 type mining roof plate displacement transducer for example; because this height of devices; size and pressure can be regulated and make up; therefore not only can apply to high top board displacement measurement; can apply to low top board displacement measurement again; because the range of measuring is by the measurement rod member length decision of magnetic induction length measuring instrument 3; and the easy processing and fabricating of measurement rod member; therefore it is big to measure range; range ability is up to 0--1.5 rice; range 150 with respect to present such measuring apparatus; 300; 500 millimeters have bigger measurement range; in 16 kinds of components and parts; first sealing ring 4; second sealing ring 5; inlet for pressurised gas check valve assembly 6; shielding protection data line 8; power line 9; Compressed Gas outlet pressure limiting valve assembly 10; hydraulic oil import check valve assembly 15 and hydraulic oil outlet pressure limiting valve assembly 16 belong to standard component and part commonly used; it is few show workpieces owing to standard component and part commonly used are many, so is convenient to scale; standardization and producing in serial form manufacturing.
Embodiment 1:
The on-the-spot Compressed Gas that uses is as power when more convenient, then use Compressed Gas as power resources, at this moment the Compressed Gas that has a certain pressure enters the cavity that is positioned at the cylinder body 2 below the top board piston 14 from air compressor machine and the corresponding compressed gas feed check valve assembly 6 of connecting pipe thereof, top board piston 14 contacts with tested top board at the cylinder panel that rises above top board piston 14 under the effect of compressed air pressure, along with Compressed Gas constantly enters in the chamber of cylinder body 2 bottoms from inlet for pressurised gas check valve assembly 6, guaranteed that at first the cylinder panel above the top board piston 14 contacts all the time with tested top board, constantly enter along with Compressed Gas and also make the pressure of the Compressed Gas in cylinder body 2 lower chamber constantly increase in the chamber of cylinder body 2 bottoms, export the adjusting pressure of pressure limiting valve assembly 10 greater than Compressed Gas when the pressure of Compressed Gas, be that the pressure of Compressed Gas is during greater than the spring force in the Compressed Gas outlet pressure limiting valve assembly 10, the ball sealer that Compressed Gas backs down Compressed Gas outlet pressure limiting valve assembly 10 is discharged in the air and goes, the swivel nut end of inlet for pressurised gas check valve assembly 6 and Compressed Gas outlet pressure limiting valve assembly 10 is carved with flat recess and is used for the elastic force that regulating spring suppresses ball sealer, when crushing, Compressed Gas in top board piston 14 lower chamber goes along with the compressed gas vent pressure limiting valve of moving down of top board assembly 10 is discharged in the air, this moment, top board piston 14 was descending, the magnet ring 12 of top board piston 14 bottoms is descending thereupon, the change in displacement of magnet ring 12 gets on owing to the effect of magnetic induction is reacted to magnetic induction length measuring instrument 3, because the measuring element of magnetic induction length measuring instrument 3 has carried out segment processing in advance, each segmentation all has unique reasonable coding, the degree of its segmentation segmentation has reached the rank of micron, magnetic induction length measuring instrument 3 will produce corresponding different coding signal when magnet ring 12 arrives each segmentation position, this signal is delivered to relevant monitoring instrument equipment and gets on to store by being connected in shielding protection data line 8 on the magnetic induction length measuring instrument 3, analyze and handle, power line 9 provides the electric power support for magnetic induction length measuring instrument 3.A kind of top board displacement monitor based on pretightning force of the present invention lies directly on the ground, and this installs nethermost base plate bottom surface and directly contacts with ground surface, the length that device is done, the displacement that is used to measure the big top board of displacement.
Embodiment 2:
The on-the-spot hydraulic oil that uses is as power when more convenient, then use hydraulic oil as power resources, at this moment the hydraulic oil that has certain pressure is from hydraulic oil container, pump and corresponding connecting pipe thereof enter the cavity that is positioned at the cylinder body 2 below the top board piston 14 through hydraulic oil import check valve assembly 15, top board piston 14 contacts with tested top board at the cylinder panel that rises above top board piston 14 under the effect of hydraulic fluid pressure, along with hydraulic oil constantly enters in the chamber of cylinder body 2 bottoms from hydraulic oil import check valve assembly 15, guaranteed that at first the cylinder panel above the top board piston 14 contacts all the time with tested top board, constantly enter along with hydraulic oil and also make the pressure of the hydraulic oil in cylinder body 2 lower chamber constantly increase in the chamber of cylinder body 2 bottoms, export the adjusting pressure of pressure limiting valve assembly 16 greater than hydraulic oil when the pressure of hydraulic oil, be that the pressure of hydraulic oil is during greater than the spring force in the hydraulic oil outlet pressure limiting valve assembly 16, hydraulic oil backs down the ball sealer of hydraulic oil outlet pressure limiting valve assembly 16, through flowing back to the container of hydraulic oil along pipeline in, goes by hydraulic oil outlet pressure limiting valve assembly 16, be carved with flat recess on the swivel nut of hydraulic oil import check valve assembly 15 and hydraulic oil outlet pressure limiting valve assembly 16 and be used for the elastic force that regulating spring suppresses ball sealer, when crushing, hydraulic oil in top board piston 14 lower chamber is along with moving down among hydraulic oil outlet pressure limiting valve assembly 16 and connecting pipe thereof little by little flow back to hydraulic oil container of top board gone, this moment, top board piston 14 was descending, the magnet ring 12 of top board piston 14 bottoms is descending thereupon, the change in displacement of magnet ring 12 gets on owing to the effect of magnetic induction is reacted to magnetic induction length measuring instrument 3, because the measuring element of magnetic induction length measuring instrument 3 has carried out segment processing in advance, each segmentation all has unique reasonable coding, the degree of its segmentation segmentation has reached the rank of micron, magnetic induction length measuring instrument 3 will produce corresponding different coding signal when magnet ring 12 arrives each segmentation position, this signal is delivered to relevant monitoring instrument equipment and gets on to store by being connected in shielding protection data line 8 on the magnetic induction length measuring instrument 3, analyze and handle, power line 9 provides the electric power support for magnetic induction length measuring instrument 3.A kind of top board displacement monitor based on pretightning force of the present invention lies directly on the ground, and this installs nethermost base plate bottom surface and directly contacts with ground surface, the length that device is done, the displacement that is used to measure the big top board of displacement.
Embodiment 3:
A kind of top board displacement monitor based on pretightning force of the present invention lies against on the upper surface of ground projection bearing, installing nethermost base plate bottom surface contacts with the upper surface of ground projection bearing, the weak point that device is done, the displacement that is used to measure the little top board of displacement, other are with embodiment 1.
Embodiment 4:
A kind of top board displacement monitor based on pretightning force of the present invention lies against on the upper surface of ground projection bearing, installing nethermost base plate bottom surface contacts with the upper surface of ground projection bearing, the weak point that device is done, the displacement that is used to measure the little top board of displacement, other are with embodiment 2.