CN107917670B - Sliding type top and bottom plate approaching amount measuring device and top and bottom plate approaching amount measuring method - Google Patents
Sliding type top and bottom plate approaching amount measuring device and top and bottom plate approaching amount measuring method Download PDFInfo
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- CN107917670B CN107917670B CN201711394231.5A CN201711394231A CN107917670B CN 107917670 B CN107917670 B CN 107917670B CN 201711394231 A CN201711394231 A CN 201711394231A CN 107917670 B CN107917670 B CN 107917670B
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- 238000011160 research Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 20
- 238000006073 displacement reaction Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 description 18
- 238000005065 mining Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
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- 230000001678 irradiating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
A sliding type device and a method for measuring the approaching amount of a top plate and a bottom plate of a coal face relate to a device and a method for measuring the approaching amount of the top plate and the bottom plate of the coal face. The device and the method aim to solve the problem that the prior device and the method can not measure the respective absolute displacement variation of the top plate and the bottom plate. The two curved surface movable heads of the measuring device are respectively connected with the piston rods at the corresponding ends through universal shafts, and the first piston rod and the second piston rod respectively extend into the piston rod sleeve from the two ends of the piston rod sleeve; the photoelectric encoders are equally divided into two groups and are respectively arranged on the circumferences of the outer walls at the two ends of the piston rod sleeve, and the first piston rod and the second piston rod can stretch and retract at the two ends of the piston rod sleeve; the outer wall of the piston rod sleeve is provided with scales; the shaft of each photoelectric encoder is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side. The invention is suitable for measuring the approaching amount of the top and bottom plates of the coal face.
Description
Technical Field
The invention relates to a measuring device and a measuring method for the approaching amount of a top plate and a bottom plate of a coal face.
Background
The approach amount of the top and bottom plates of the coal face is reflected by the deformation and movement of surrounding rock under the influence of mining of a stoping space under the supporting action of a hydraulic support. Therefore, the stability degree of the top plate of the fully-mechanized mining face, the support supporting effect and the adaptability can be evaluated, data can be provided for support selection and design (the structure, the height and the like of the support), and suggestions are provided for improving the top plate management. Thus, the observation of the approaching amount of the top and bottom plates is a non-negligible observation item.
Moreover, the approaching amount of the top plate and the bottom plate is a relatively stable mine pressure parameter of the fully mechanized mining face, and the step pitch and the strength of the primary pressure and the periodical pressure of the old top can be judged by using the mine pressure parameter, so that the movement rule of the surrounding rock of the fully mechanized mining face can be mastered. Meanwhile, the purpose of observing the approaching speed of the top plate and the bottom plate is to determine the influence of the maximum approaching speed of the top plate and the bottom plate of the fully mechanized mining face and the duration time thereof on the stability of the top plate, and the influence range and the strength of procedures such as coal cutting, frame moving and the like on the state of the top plate. The approaching speed of the top plate and the bottom plate can provide basis for reasonably arranging working procedures and scientifically organizing production.
At present, the distance between the top plate and the bottom plate of the coal face is basically measured directly, and if the distance between the top plate and the bottom plate is changed, the structure of the top plate and the bottom plate of the coal face is proved to be changed, so that attention is paid. When the top plate and the bottom plate of the coal face are subjected to the same displacement variation, the top plate and the bottom plate are moved close together in the same direction, and the actual top plate and the actual bottom plate are changed in displacement and the like, but the conventional device and the conventional method cannot find the point, namely the conventional device and the conventional method can only determine the relative change of the top plate and the bottom plate, cannot obtain the respective absolute displacement change of the top plate and the bottom plate, bring a lot of inconvenience to researching the approaching amount of the top plate and the bottom plate, and also have a huge potential safety hazard possibly caused by the situation.
Disclosure of Invention
The invention aims to solve the problem that the conventional device and method cannot measure the respective absolute displacement variation of a top plate and a bottom plate.
The sliding type top and bottom plate approaching measuring device comprises a sliding type top and bottom plate approaching measuring rod, wherein the sliding type top and bottom plate approaching measuring rod comprises a first curved surface movable head, a second curved surface movable head, a first universal shaft, a second universal shaft, a first piston rod, a second piston rod, an even number of photoelectric encoders and a piston rod sleeve;
the first curved surface movable head is connected with one end of a first piston rod through a first universal shaft, and the second curved surface movable head is connected with one end of a second piston rod through a second universal shaft;
the other end of the first piston rod and the other end of the second piston rod extend into the piston rod sleeve from the two ends of the piston rod sleeve respectively;
the even number of photoelectric encoders are equally divided into two groups, wherein one group of the photoelectric encoders are uniformly arranged on the circumference of the outer wall at one end of the piston rod sleeve, and the other group of the photoelectric encoders are uniformly arranged on the circumference of the outer wall at the other end of the piston rod sleeve; along the length direction of the piston rod sleeve, scales are arranged on the outer wall of the piston rod sleeve;
the first piston rod and the second piston rod are matched with the piston rod sleeve for use, and the first piston rod and the second piston rod can stretch out and draw back at two ends of the piston rod sleeve;
the shaft of each photoelectric encoder is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side.
Further, the number of the photoelectric encoders is 4.
Further, the sliding type top and bottom plate approaching measuring device further comprises a laser.
The sliding type top and bottom plate approaching measuring device comprises a sliding type top and bottom plate approaching measuring rod, wherein the sliding type top and bottom plate approaching measuring rod comprises a first curved surface movable head, a second curved surface movable head, a first universal shaft, a second universal shaft, a first piston rod, a second piston rod, an even number of photoelectric encoders, a first piston rod sleeve and a second piston rod sleeve;
the first curved surface movable head is connected with one end of a first piston rod through a first universal shaft, and the second curved surface movable head is connected with one end of a second piston rod through a second universal shaft;
the other end of the first piston rod extends into the first piston rod sleeve; the other end of the second piston rod extends into the second piston rod sleeve; the first piston rod sleeve is connected with the second piston rod sleeve through threaded fit and is used as a plug rod sleeve after being connected;
the even number of photoelectric encoders are equally divided into two groups, wherein one group of the photoelectric encoders are evenly arranged on the circumference of the outer wall at one end of the first piston rod sleeve, and the other group of the photoelectric encoders are evenly arranged on the circumference of the outer wall at one end of the second piston rod sleeve;
the first piston rod sleeve and the second piston rod sleeve are provided with scales along the length direction, and after the first piston rod sleeve and the second piston rod sleeve are connected, the scales of the first piston rod sleeve and the scales of the second piston rod sleeve can form a row of scales;
the first piston rod and the second piston rod are respectively matched with the first piston rod sleeve and the second piston rod sleeve for use, the first piston rod can stretch out and draw back at one end of the first piston rod sleeve, and the second piston rod can stretch out and draw back at one end of the second piston rod sleeve;
the shaft of each photoelectric encoder is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side.
Further, the number of the photoelectric encoders is 4.
Further, the sliding type top and bottom plate approach measuring device further comprises a laser.
The method for measuring the approaching amount of the top and the bottom plates by utilizing the sliding approaching amount measuring device comprises the following steps:
in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, a first curved surface movable head and a second curved surface movable head of a sliding type top plate and bottom plate approaching amount measuring rod are firstly adjusted, so that the first curved surface movable head and the second curved surface movable head are respectively contacted with the top plate and the bottom plate;
then, finding a reference position in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, setting a laser, enabling laser a emitted by the laser to irradiate on a scale on the outer wall of the piston rod sleeve, and determining a reference line on the scale; acquiring the distance from the datum line to the top plate and the distance from the datum line to the bottom plate through a photoelectric encoder;
after a period of time corresponding to the change research of the top plate and the bottom plate is needed, ensuring that the sliding type top plate and bottom plate moving amount measuring rod is measured again at the original position, and determining the moving amount of the datum line through the scale of the laser emitted by the laser irradiated on the outer wall of the piston rod sleeve; obtaining the distance from the datum line to the top plate and the distance from the datum line to the bottom plate through the photoelectric encoder, and obtaining the moving-in quantity of the top plate and the bottom plate relative to the original position through the moving-in quantity of the datum line; and meanwhile, the currently measured inclination angle of the top plate or the bottom plate is obtained through the data of the photoelectric encoder 4 at the same end.
The invention has the beneficial effects that:
aiming at the condition that the top and bottom plates of the coal face are uneven, the first curved surface movable head and the second curved surface movable head of the sliding type top and bottom plate approaching measuring device can adapt to various conditions of the top and bottom plates of the coal face for measurement. The invention can not only measure the distance between the top and bottom plates of the coal face, namely the relative displacement of the top and bottom plates of the coal face.
The photoelectric encoder is matched with the piston rods and the movable heads at one end of the photoelectric encoder, so that the displacement of the top plate and the bottom plate of the coal face, namely the absolute displacement of the top plate and the bottom plate, can be measured. And because the photoelectric encoder, the piston rod and the movable head are matched, the device can adapt to the conditions of different heights of coal faces, and can measure even if the relative distance between the top plate and the bottom plate is large or small.
Meanwhile, the photoelectric encoders and the symmetrical arrangement can ensure that the measurement has high precision, so that the measurement error of the displacement of the top plate and the bottom plate is controlled below 0.5%. In addition, when the photoelectric encoder of the device is damaged, the displacement measuring process of the top plate and the bottom plate is not influenced, namely, when the device is not damaged at first and is lowered to a coal face for measurement, the normal development of the measurement work can be ensured; in this case, the conventional measuring device cannot perform the measurement at all. And because of the structural characteristics of the device, even if all photoelectric encoders at one end are damaged, the device can be used for realizing measurement.
Drawings
FIG. 1 is a schematic view of a sliding type device for measuring the displacement of a top plate and a bottom plate according to a first embodiment;
fig. 2 is a schematic structural diagram of a sliding type device for measuring the displacement of a top plate and a bottom plate in a fourth embodiment.
Detailed Description
The first embodiment is as follows: the present embodiment will be described with reference to figure 1,
the sliding type top and bottom plate approaching measuring device comprises a sliding type top and bottom plate approaching measuring rod, wherein the sliding type top and bottom plate approaching measuring rod comprises a first curved surface movable head 1, a second curved surface movable head 11, a first universal shaft 2, a second universal shaft 12, a first piston rod 3, a second piston rod 13, an even number of photoelectric encoders 4 and a piston rod sleeve 5;
the first curved surface movable head 1 is connected with one end of a first piston rod 3 through a first universal shaft 2, and the second curved surface movable head 11 is connected with one end of a second piston rod 13 through a second universal shaft 12; after the actual coal seam exploitation, the roof and the floor of the environment in which the approaching amount of the roof and the floor is required to be measured are uneven, so that the first curved surface movable head 1 and the second curved surface movable head 11 are required to be made into one surface to be curved, and meanwhile, the curved surface movable heads are adjusted by the universal shafts to be contacted with the actual surfaces of the roof and the floor at a proper angle, so that the error is reduced as much as possible.
The other end of the first piston rod 3 and the other end of the second piston rod 13 extend into the piston rod sleeve 5 from the two ends of the piston rod sleeve 5 respectively;
the even number of photoelectric encoders 4 are equally divided into two groups, wherein one group of the photoelectric encoders are evenly arranged on the circumference of the outer wall at one end of the piston rod sleeve 5, and the other group of the photoelectric encoders 4 are evenly arranged on the circumference of the outer wall at the other end of the piston rod sleeve 5; graduations are arranged on the outer wall of the piston rod sleeve 5 along the length direction of the piston rod sleeve 5;
the first piston rod 3 and the second piston rod 13 are matched with the piston rod sleeve 5, and the first piston rod 3 and the second piston rod 13 can stretch out and draw back at two ends of the piston rod sleeve 5; the first piston rod 3 and the second piston rod 13 can be telescopic at the two ends of the piston rod sleeve 5 through springs (arranged inside the piston rod sleeve); the first piston rod 3 and the second piston rod 13 can also be telescopic at the two ends of the piston rod sleeve 5 through hydraulic pressure;
the shaft of each photoelectric encoder 4 is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side.
The second embodiment is as follows:
the number of photoelectric encoders according to the present embodiment is 4. At this time, 2 of the electric encoders 4 are symmetrically arranged on the outer wall of one end of the piston rod sleeve 5, that is, uniformly arranged on the circumference of the outer wall of one end of the piston rod sleeve; the other 2 electric encoders 4 are symmetrically arranged on the outer wall of the other end of the piston rod sleeve 5, namely uniformly arranged on the circumference of the outer wall of the other end of the piston rod sleeve.
When the curved movable head contacts the actual surfaces of the top plate and the bottom plate at a proper angle, the curved movable head is laterally deviated. In practice, the photoelectric encoders are set to be 8, and 4 groups of photoelectric encoders are symmetrically arranged on the circumference of the outer wall of the piston rod sleeve, so that the inclination angle of the top plate or the bottom plate can be measured by the 4 photoelectric encoders more accurately, but the cost of the equipment can be increased. The photoelectric encoders are set to be 4, 2 groups of photoelectric encoders are symmetrically arranged on the circumference of the outer wall of the piston rod sleeve, the distance between the top plate and the bottom plate can be obtained through the data of the 2 photoelectric encoders at the same end, and the inclination angle of the top plate or the bottom plate which is currently measured can be obtained according to the geometric relationship through the data difference value of the 2 photoelectric encoders at the same end. In order to obtain the inclination angle of the top plate or the bottom plate which is measured at present more accurately, the inclination angle of the top plate or the bottom plate which is measured at present can be obtained through geometrical relationship by suspending the equipment at a certain angle (for example, 90 degrees) along the axis at the same measuring point after one measurement.
Other structures and parameters are the same as in the first embodiment.
And a third specific embodiment:
the sliding type top and bottom plate approaching measuring device according to the embodiment further comprises a laser for irradiating the piston rod sleeve.
Other structures and parameters are the same as in the first or second embodiments.
The specific embodiment IV is as follows: the present embodiment will be described with reference to figure 2,
the embodiment comprises a sliding type top and bottom plate approaching measuring rod, wherein the sliding type top and bottom plate approaching measuring rod comprises a first curved surface movable head 1, a second curved surface movable head 11, a first universal shaft 2, a second universal shaft 12, a first piston rod 3, a second piston rod 13, an even number of photoelectric encoders 4, a first piston rod sleeve 51 and a second piston rod sleeve 52;
the first curved surface movable head 1 is connected with one end of a first piston rod 3 through a first universal shaft 2, and the second curved surface movable head 11 is connected with one end of a second piston rod 13 through a second universal shaft 12; after the actual coal seam exploitation, the roof and the floor of the environment in which the approaching amount of the roof and the floor is required to be measured are uneven, so that the first curved surface movable head 1 and the second curved surface movable head 11 are required to be made into one surface to be curved, and meanwhile, the curved surface movable heads are adjusted by the universal shafts to be contacted with the actual surfaces of the roof and the floor at a proper angle, so that the error is reduced as much as possible.
The other end of the first piston rod 3 extends into the first piston rod sleeve 51; the other end of the second piston rod 13 extends into the second piston rod sleeve 52; the first piston rod sleeve 51 is connected with the second piston rod sleeve 52 through threaded fit, and is used as a piston rod sleeve 5 after being connected; this allows the addition of a long tube with threads at both ends between the first and second piston rod sleeves 51, 52 and the connection of the first and second piston rod sleeves 51, 52 together, thereby increasing the length of the sliding top and bottom plate displacement measuring rod to accommodate higher distances.
The even number of photoelectric encoders 4 are equally divided into two groups, wherein one group of the photoelectric encoders are evenly arranged on the circumference of the outer wall at one end of the first piston rod sleeve 51, and the other group of the photoelectric encoders 4 are evenly arranged on the circumference of the outer wall at one end of the second piston rod sleeve 52;
the first piston rod sleeve 51 and the second piston rod sleeve 52 are provided with scales on the outer wall along the length direction, and after the first piston rod sleeve 51 and the second piston rod sleeve 52 are connected, the scales of the first piston rod sleeve 51 and the scales of the second piston rod sleeve 52 can form a row of scales; after the long tube with the graduations is added between the first piston rod sleeve 51 and the second piston rod sleeve 52, the graduations on the first piston rod sleeve 51, the long tube and the second piston rod sleeve 52 can form a row of graduations;
the first piston rod 3 and the second piston rod 13 are respectively matched with the first piston rod sleeve 51 and the second piston rod sleeve 52 for use, the first piston rod 3 can stretch out and draw back at one end of the first piston rod sleeve 51, and the second piston rod 13 can stretch out and draw back at one end of the second piston rod sleeve 52; the first piston rod 3 and the second piston rod 13 can respectively realize the expansion and contraction at one ends of the first piston rod sleeve and the second piston rod sleeve through springs; one ends of the first piston rod sleeve and the second piston rod sleeve can be respectively compressed by hydraulic pressure to stretch and retract;
the shaft of each photoelectric encoder 4 is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side.
Fifth embodiment:
the number of photoelectric encoders according to the present embodiment is 4.
Other structures and parameters are the same as in the fourth embodiment.
Specific embodiment six:
the sliding type top and bottom plate approaching measuring device according to the embodiment further comprises a laser for irradiating the piston rod sleeve.
Other structures and parameters are the same as those of the fourth or fifth embodiment.
Seventh embodiment:
the method for measuring the approaching amount of the top and the bottom plates by utilizing the sliding approaching amount measuring device comprises the following steps:
in an environment where the approaching amount of the top and bottom plates is required to be measured, firstly, a first curved surface movable head 1 and a second curved surface movable head 11 of a sliding type top and bottom plate approaching amount measuring rod are adjusted, so that the first curved surface movable head 1 and the second curved surface movable head 11 respectively contact the top plate and the bottom plate;
then a reference position is found in an environment of which the approaching amount of the top plate and the bottom plate is required to be measured, a laser is arranged, laser a emitted by the laser irradiates on a scale on the outer wall of the piston rod sleeve 5, a reference line is determined on the scale, and the laser irradiates on a 0 dividing line (a scale center line) to be used as the reference line; acquiring the distance from the datum line to the top plate and the distance from the datum line to the bottom plate through the photoelectric encoder 4;
after a period of time corresponding to the change research of the top and bottom plates is needed, the sliding type top and bottom plate approaching amount measuring rod can be arranged at the original position again for measurement after a period of time, or the sliding type top and bottom plate approaching amount measuring rod can be kept at the original position all the time, so that the sliding type top and bottom plate approaching amount measuring rod can be guaranteed to measure again at the original position, the approaching amount of the datum line is determined through the scale of the laser emitted by the laser and irradiated on the outer wall of the piston rod sleeve 5, and when the laser irradiates to the 1 scale line, the scale line 0 is equivalent to 1 scale unit which is lowered; obtaining the distance from the datum line to the top plate and the distance from the bottom plate through the photoelectric encoder 4, and obtaining the moving-in amount of the top plate and the bottom plate relative to the original position through the moving-in amount of the datum line; and meanwhile, the inclination angle of the top plate or the bottom plate which is currently measured is obtained by combining the geometrical relationship through the data difference value of the photoelectric encoder 4 at the same end.
The symmetrical arrangement of the photoelectric encoders can ensure that the measurement has high precision, so that the measurement error of the displacement of the top plate and the bottom plate is controlled to be less than 0.5 percent, and the measurement process of the displacement of the top plate and the bottom plate can not be influenced under the condition that one or all of the photoelectric encoders at one end of the device are damaged, namely, the normal development of the measurement work can be ensured when the device is not damaged at first and the measurement is carried out on the coal face; in this case, the conventional measuring device cannot perform the measurement at all. The measuring process can be divided into a process of measuring the top plate and the bottom plate, the approaching amount of the top plate (or the bottom plate) is firstly measured by using the perfect end of the device, the laser emitted by the laser irradiates on the scale on the outer wall of the piston rod sleeve, and the approaching amount of the top plate (or the bottom plate) can be obtained by taking a certain scale as a reference scale for measurement. Then, the two ends of the device are exchanged, the approaching amount of the bottom plate (or the top plate) is measured by using the intact end of the device, and the laser emitted by the laser irradiates the reference scale (or irradiates on a certain scale and then performs quantity relation conversion with the reference scale), so that the approaching amount measurement of the bottom plate (or the top plate) is realized. And the inclination angle of the top plate or the bottom plate which is currently measured can be obtained according to the geometric relationship through the data difference value of the 2 photoelectric encoders at the same end. In order to obtain the inclination angle of the top plate or the bottom plate which is measured at present more accurately, the inclination angle of the top plate or the bottom plate which is measured at present can be obtained through geometrical relationship by suspending the equipment at a certain angle (for example, 90 degrees) along the axis at the same measuring point after one measurement.
In the later stage, the three-dimensional structure of the coal face can be simulated by the data of each measuring point.
Claims (2)
1. The method for measuring the approaching amount of the top and bottom plates by utilizing the sliding type approaching amount measuring device is characterized by comprising a sliding type approaching amount measuring rod of the top and bottom plates, wherein the sliding type approaching amount measuring rod comprises a first curved surface movable head (1), a second curved surface movable head (11), a first universal shaft (2), a second universal shaft (12), a first piston rod (3), a second piston rod (13), 4 photoelectric encoders (4), a piston rod sleeve (5) and a laser;
the first curved surface movable head (1) is connected with one end of the first piston rod (3) through the first universal shaft (2), and the second curved surface movable head (11) is connected with one end of the second piston rod (13) through the second universal shaft (12);
the other end of the first piston rod (3) and the other end of the second piston rod (13) extend into the piston rod sleeve (5) from the two ends of the piston rod sleeve (5) respectively;
the even number of photoelectric encoders (4) are equally divided into two groups, wherein one group of the photoelectric encoders is evenly arranged on the circumference of the outer wall at one end of the piston rod sleeve (5), and the other group of the photoelectric encoders (4) is evenly arranged on the circumference of the outer wall at the other end of the piston rod sleeve (5); along the length direction of the piston rod sleeve (5), scales are arranged on the outer wall of the piston rod sleeve (5);
the first piston rod (3) and the second piston rod (13) are matched with the piston rod sleeve (5) for use, and the first piston rod (3) and the second piston rod (13) can stretch and retract at two ends of the piston rod sleeve (5);
the shaft of each photoelectric encoder (4) is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved surface movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side;
the process of measuring the approaching amount of the top and the bottom plates by utilizing the sliding type approaching amount measuring device of the top and the bottom plates is as follows:
in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, a first curved surface movable head (1) and a second curved surface movable head (11) of a sliding type top plate and bottom plate approaching amount measuring rod are firstly adjusted, so that the first curved surface movable head (1) and the second curved surface movable head (11) respectively contact the top plate and the bottom plate;
then, a reference position is found in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, a laser is arranged, laser a emitted by the laser irradiates on a scale on the outer wall of a piston rod sleeve (5), and a reference line is determined on the scale; acquiring the distance from the datum line to the top plate and the distance from the datum line to the bottom plate through a photoelectric encoder (4);
after a period of time corresponding to the change research of the top and bottom plates is needed, the sliding type top and bottom plate moving amount measuring rod is guaranteed to measure again at the original position, and the moving amount of the datum line is determined through the scale of laser emitted by the laser and irradiated on the outer wall of the piston rod sleeve (5); obtaining the distance from the datum line to the top plate and the distance from the bottom plate through a photoelectric encoder (4), and obtaining the moving amount of the top plate and the bottom plate relative to the original position through the moving amount of the datum line; and meanwhile, the currently measured inclination angle of the top plate or the bottom plate is obtained through the data of the photoelectric encoder (4) at the same end.
2. The method for measuring the approaching amount of the top and bottom plates by utilizing the sliding type approaching amount measuring device is characterized by comprising a sliding type approaching amount measuring rod of the top and bottom plates, wherein the sliding type approaching amount measuring rod comprises a first curved surface movable head (1), a second curved surface movable head (11), a first universal shaft (2), a second universal shaft (12), a first piston rod (3), a second piston rod (13), 4 photoelectric encoders (4), a first piston rod sleeve (51), a second piston rod sleeve (52) and a laser;
the first curved surface movable head (1) is connected with one end of the first piston rod (3) through the first universal shaft (2), and the second curved surface movable head (11) is connected with one end of the second piston rod (13) through the second universal shaft (12);
the other end of the first piston rod (3) extends into the first piston rod sleeve (51); the other end of the second piston rod (13) extends into the second piston rod sleeve (52); the first piston rod sleeve (51) is connected with the second piston rod sleeve (52) through threaded fit, and is used as a plug rod sleeve (5) after being connected;
the even number of photoelectric encoders (4) are equally divided into two groups, wherein one group of the photoelectric encoders are evenly arranged on the circumference of the outer wall at one end of the first piston rod sleeve (51), and the other group of the photoelectric encoders (4) are evenly arranged on the circumference of the outer wall at one end of the second piston rod sleeve (52);
the first piston rod sleeve (51) and the second piston rod sleeve (52) are provided with scales along the length direction, and after the first piston rod sleeve (51) and the second piston rod sleeve (52) are connected, the scales of the first piston rod sleeve (51) and the scales of the second piston rod sleeve (52) can form a row of scales;
the first piston rod (3) and the second piston rod (13) are respectively matched with the first piston rod sleeve (51) and the second piston rod sleeve (52), the first piston rod (3) can stretch out and draw back at one end of the first piston rod sleeve (51), and the second piston rod (13) can stretch out and draw back at one end of the second piston rod sleeve (52);
the shaft of each photoelectric encoder (4) is respectively connected with one end of one wire rope, the other end of each wire rope is connected to the curved surface movable head on the corresponding side, and the wire rope is parallel to the axis of the piston rod on the corresponding side;
the process of measuring the approaching amount of the top and the bottom plates by utilizing the sliding type approaching amount measuring device of the top and the bottom plates is as follows:
in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, a first curved surface movable head (1) and a second curved surface movable head (11) of a sliding type top plate and bottom plate approaching amount measuring rod are firstly adjusted, so that the first curved surface movable head (1) and the second curved surface movable head (11) respectively contact the top plate and the bottom plate;
then, a reference position is found in an environment where the approaching amount of the top plate and the bottom plate is required to be measured, a laser is arranged, laser a emitted by the laser irradiates on a scale on the outer wall of a piston rod sleeve (5), and a reference line is determined on the scale; acquiring the distance from the datum line to the top plate and the distance from the datum line to the bottom plate through a photoelectric encoder (4);
after a period of time corresponding to the change research of the top and bottom plates is needed, the sliding type top and bottom plate moving amount measuring rod is guaranteed to measure again at the original position, and the moving amount of the datum line is determined through the scale of laser emitted by the laser and irradiated on the outer wall of the piston rod sleeve (5); obtaining the distance from the datum line to the top plate and the distance from the bottom plate through a photoelectric encoder (4), and obtaining the moving amount of the top plate and the bottom plate relative to the original position through the moving amount of the datum line; and meanwhile, the currently measured inclination angle of the top plate or the bottom plate is obtained through the data of the photoelectric encoder (4) at the same end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394231.5A CN107917670B (en) | 2017-12-21 | 2017-12-21 | Sliding type top and bottom plate approaching amount measuring device and top and bottom plate approaching amount measuring method |
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| CN107917670A (en) | 2018-04-17 |
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Inventor after: Liu Gang Inventor after: Shang Yuhang Inventor after: Wang Dongwei Inventor after: Xiao Fukun Inventor after: Jiang Yuannan Inventor after: Chi Xuehai Inventor after: Zhao Meifang Inventor after: Qin Tao Inventor after: Jin Zhupeng Inventor after: Liu Zhijun Inventor before: Liu Gang Inventor before: Xiao Fukun Inventor before: Jiang Yuannan Inventor before: Chi Xuehai Inventor before: Zhao Meifang Inventor before: Qin Tao Inventor before: Jin Zhupeng Inventor before: Liu Zhijun Inventor before: Shang Yuhang |
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Effective date of registration: 20231211 Address after: Room 108, 1st Floor, Songbei Park Building, Heilongjiang University of Science and Technology Science Park, No. 2468 Puyuan Road, Songbei District, Harbin City, Heilongjiang Province, 150022 Patentee after: Heilongjiang Coal Science and Technology Intelligent Control Technology Co.,Ltd. Address before: 150022 No. 2468 Puyuan Road, Songbei District, Harbin City, Heilongjiang Province Patentee before: HEILONGJIANG University OF SCIENCE AND TECHNOLOGY |