JP2014217889A - Measuring device and measuring method for conveyor roll level of table roll facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure levels of a plurality of conveyor rolls with high precision while none of permanent installation, an increase in scale of facilities, and the limit of the number of conveyor rolls to be measured is required.SOLUTION: A measuring device 10 for conveyor roll level includes: a movable frame structure 11 which is arranged over a plurality of conveyor rolls; an electronic level 12 for measuring the levelness of the frame structure 11; an adjusting mechanism 13 which adjusts the frame structure 11 into a horizontal state; a displacement sensor 14 which can move along the frame structure 11 in a direction orthogonal to a lengthwise direction of a conveyor roll 1, and measures a vertical distance to an upper surface of the conveyor roll 1; a driving mechanism 15 which drives the displacement sensor 14; and a control unit 16 which controls the operation to adjust the frame structure 11 into the horizontal state based upon information of the electronic level 12, controls the movement of the displacement sensor 14 and its detecting operation, and also computes the height of the conveyor roll 1.

Description

  The present invention relates to an apparatus and a method for measuring a transport roll level in a table roll facility that transports a transported body such as a steel plate using a plurality of transport rolls.

  Table roll equipment for transporting a transported object such as a steel plate using a plurality of transport rolls includes a run-out table after hot rolling, a cold rolling table roll equipment, a thick plate table roll equipment, a continuous casting equipment, and the like.

  In such a table roll facility, it is necessary to form a flat pass line in order to prevent wrinkles from being generated on the transported body due to meandering of the transported body. However, if the transport roll is worn by repeated use, a difference occurs in the height level of each transport roll, and a flat pass line cannot be formed. In addition, another cause of the failure to form a flat pass line is the collapse of civil engineering foundations (such as land subsidence due to landfills).

  And since a flat pass line is not formed in this way, the steel sheet meanders, or the steel sheet is wrinkled due to strong contact with the roll and the commercial value is lowered, resulting in a decrease in yield.

  For this reason, the height level of a conveyance roll is measured regularly, and based on the result, exchange and adjustment of a conveyance roll are performed so that a flat pass line can be secured.

  Conventionally, the measurement of the height level of the transport roll has been performed for each transport roll using the Y level (auto level) that measures the height by looking through the main body connected to a large tripod. Since the measurement is performed by a person, the error is large, and the accuracy is in mm units and is not sufficient. Further, for example, in the case of a hot-rolled runout table, there are about 300 transport rolls, and it takes a lot of time to measure these transport rolls one by one. Furthermore, these table roll facilities exist in a narrow place, and it is difficult to install a tripod or the like in such a narrow place, which is not common. Furthermore, there is a disadvantage that the accuracy decreases as the measurement distance increases and the measurement cannot be performed with uniform accuracy.

  As techniques for eliminating such work and automatically measuring the height level of the transport roll in the table roll equipment, those disclosed in Patent Documents 1 and 2 are known.

  The technique disclosed in Patent Document 1 provides two distance sensors at predetermined positions above the table roll equipment, and sequentially measures the distance between the work side of the transport roll and the roll surface of the drive side, and these distances. Is compared with a reference value given in advance to determine the presence or absence of misalignment of the transport roll.

  In addition, the technique disclosed in Patent Document 2 is such that a carriage having a sliding surface having a length straddling at least three of a large number of conveying rolls constituting the table roll equipment is placed on the table roll equipment, A measurement reference plane parallel to the active surface is set above the sliding surface of this, and the shortest distance from this measurement reference plane to the peripheral surface of the transport roll under the carriage is measured for all rolls. Measure the distance from the measurement position to each measurement position, measure the angle of inclination of the carriage sliding surface with respect to the horizontal plane, and based on these measurement results, determine the relative roll circumference of the conveyance roll in the group of conveyance rolls under the carriage. A horizontal level difference is calculated.

JP-A-8-105730 JP-A-10-132551

  However, in the technique of the above-mentioned Patent Document 1, it is necessary to permanently install a rigid body that can fix the device above the transport roll, and since the device is fixed, only about seven can be measured with one device, and it is permanent. There are problems such as failure due to vibration, heat, dust, etc. and a decrease in accuracy, and a measurement error due to the oblique measurement of the transport roll away from the distance sensor.

  In the technique of Patent Document 2, an error of a sensor for detecting a minute angle directly affects the roll height, and an error occurs because the roll diameter is measured by three laser displacement meters irradiated obliquely. There are problems such as difficult handling due to large equipment.

  The present invention has been made in view of such circumstances, and is not permanently installed, the equipment is not large, the number of transport rolls to be measured is not limited, and the level of a plurality of transport rolls can be set with high accuracy. It is an object of the present invention to provide a measuring device and a measuring method for a transport roll level in a table roll facility that can be measured.

In order to solve the above problems, the present invention provides the following (1) to (11).
(1) A transport roll level measuring device in a table roll facility that transports a transported object by a plurality of transport rolls,
A movable frame structure arranged to straddle a plurality of transport rolls;
An electronic level for measuring the level of the frame structure;
An adjustment mechanism for adjusting the frame structure to a horizontal state;
A displacement sensor provided so as to be movable in a horizontal state in a direction perpendicular to the longitudinal direction of the transport roll along the frame structure, and continuously measuring a distance in the vertical direction with respect to the upper surface of the transport roll;
A drive mechanism for driving the displacement sensor in a direction perpendicular to the longitudinal direction of the transport roll;
Based on the information of the electronic level, the operation of adjusting the frame structure by the adjustment mechanism to a horizontal state is controlled, the movement of the displacement sensor by the drive mechanism and the detection operation thereof are controlled, and the displacement sensor And a control unit that calculates the height of the transport roll based on a signal from the transport roll level measuring device in the table roll facility.
(2) The frame structure is connected to a longitudinal frame disposed along a direction orthogonal to the longitudinal direction of the transport roll, and connected to both ends of the longitudinal frame, and disposed along the longitudinal direction of the transport roll. The apparatus for measuring a transport roll level in a table roll facility according to (1), wherein the displacement sensor is provided so as to be movable along the vertical frame.
(3) The table roll according to (2), further comprising a guide member provided along the vertical frame, and a sensor support member that supports the displacement sensor and travels on the guide member. Equipment for measuring transport roll level in equipment.
(4) The apparatus for measuring a transport roll level in a table roll facility according to (3), wherein the sensor support member supports a plurality of displacement sensors along a longitudinal direction of the transport roll.
(5) The apparatus for measuring a transport roll level in a table roll facility according to any one of (1) to (4), wherein the displacement sensor is a laser displacement sensor.
(6) In the table roll equipment according to any one of (1) to (5), the adjustment mechanism includes at least three actuators that adjust the height of the frame structure at different positions. Transport roll level measuring device.
(7) When the measurement of the transport roll level is continued by moving the frame structure to the next position of the table roll equipment after the measurement of the transport roll level once for a predetermined number of transport rolls is completed. The apparatus for measuring the transport roll level in the table roll facility according to any one of (1) to (6), wherein the measurement is performed on a plurality of transport rolls including the transport roll that has already been measured.
(8) In the table roll equipment according to any one of (1) to (7), the displacement sensor performs measurement at an interval at which apexes of the plurality of transport rolls can be determined. Transport roll level measuring device.
(9) A movable frame structure disposed so as to straddle a plurality of transport rolls, an electronic level for measuring the level of the frame structure, and adjusting the frame structure to a horizontal state An adjustment mechanism and a displacement that is provided so as to be movable in a horizontal state in a direction perpendicular to the longitudinal direction of the transport roll along the frame structure, and that continuously measures the distance in the vertical direction with respect to the upper surface of the transport roll In table roll equipment for transporting a transported object by a plurality of transport rolls using a transport roll level measuring device having a sensor and a drive mechanism for driving the displacement sensor in a direction orthogonal to the longitudinal direction of the transport rolls A method for measuring a transport roll level,
Installing the frame structure at a predetermined position of the table roll;
Based on the information of the electronic level, the adjustment mechanism makes the frame structure horizontal,
In that state, while moving the displacement sensor in the direction orthogonal to the longitudinal direction of the transport roll by the drive mechanism, measure the distance in the vertical direction continuously with respect to the upper surface of the transport roll by the displacement sensor,
A method for measuring a transport roll level in a table roll facility, wherein the height of the transport roll whose distance is measured by the displacement sensor is obtained based on the measurement data.
(10) After the measurement of one transport roll level for the predetermined number of transport rolls is completed by the transport roll level measuring device, the frame structure is moved to the next position of the table roll facility and continued. The transport roll level is measured, and at that time, the measurement is performed on a plurality of transport rolls including the transport roll that has already been measured. Measuring method.
(11) The transport roll level in the table roll facility according to (9) or (10), wherein the displacement sensor performs measurement at an interval at which apexes of the plurality of transport rolls can be determined. Measuring method.

  According to the present invention, a movable frame structure that is arranged so as to straddle a plurality of conveyance rolls is installed, and the frame structure is adjusted to a horizontal state by an adjustment mechanism based on information of an electronic level, and is displaced. While moving the sensor along the frame structure in the direction perpendicular to the longitudinal direction of the transport roll in the transported direction in the transported body, the displacement sensor continuously measures the distance in the vertical direction with respect to the upper surface of the transport roll. And since the height of a some conveyance roll is calculated, the level (height) of a some conveyance roll can be measured with high precision. In addition, since the frame structure can be moved, it is not necessary to install the frame structure. Also, since the frame structure has a simple structure in which an electronic level, an adjustment mechanism, a displacement sensor, and the like are attached, the equipment does not become large. . Moreover, since it can measure while moving a frame structure, there is no restriction | limiting in the number of conveyance rolls which can be measured.

It is a top view which shows the measuring apparatus of the conveyance roll level which concerns on one Embodiment of this invention. It is a side view which shows the measuring apparatus of the conveyance roll level which concerns on one Embodiment of this invention. It is a figure which shows typically the actuator arrangement | positioning of an adjustment mechanism, and XY coordinate of an electronic level. It is a flowchart which shows the procedure at the time of performing horizontal control of a frame structure. It is a figure which shows the example which displayed the signal of the electronic level before adjustment on XY coordinate. It is a figure which shows the example of the detection result of a conveyance roll.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a plan view showing a transport roll level measuring apparatus according to an embodiment of the present invention, and FIG. 2 is a side view thereof.

  This transport roll level measuring device 10 measures the level (height) of a transport roll in a table roll facility 2 in which a plurality of transport rolls 1 are arranged in the transport direction of a transported object, for example, a steel plate. A movable frame structure 11 arranged so as to straddle a plurality of transport rolls 1 of the table roll facility 2, an electronic level 12 for measuring the level of the frame structure 11, and a frame structure 11 An adjustment mechanism 13 that adjusts to a horizontal state, and is provided so as to be movable in a horizontal state in a direction perpendicular to the longitudinal direction of the transport roll 1 along the frame structure 11, and is continuously perpendicular to the transport roll 1. A laser displacement sensor 14 that measures the above, a drive mechanism 15 that drives the laser displacement sensor 14, and a control unit 16.

  The frame structure 11 is connected to both ends of the vertical frame 11a and the vertical frame 11a disposed in the vicinity of the center in the longitudinal direction of the transport roll 1 along the direction orthogonal to the longitudinal direction of the transport roll 1, respectively. It has a pair of horizontal frames 11b extending in both sides and arranged in the longitudinal direction of the transport roll 1. The frame structure 11 is preferably made of a lightweight metal such as aluminum. Since the transport roll level measuring device 10 needs to be moved on the table roll equipment 2 as described later, it is preferable to make the size easy to move. It is preferable that the effective measurement span indicated by A in 1 is about 2000 to 2500 mm. This is because “deflection” exceeding the measurement error occurs because the two ends are supported. In order to extend the effective span for reasons of transport facilities, a material having a more rigid material is used as the frame structure 11, or a device having a mechanism for measuring the amount of deflection in advance and canceling the deflection is used. It is preferable.

  The electronic level 12 is configured as a two-axis angle sensor, and can detect the inclination in the X-axis direction and the Y-axis direction with high accuracy.

  The adjustment mechanism 13 is provided on the lower side of each end of each horizontal frame 11b, supports the four actuators 21 for adjusting the height, and the actuators 21 and is placed on the three transport rolls 1. And four support members 22 provided in this manner. Note that the number of transport rolls 1 on which the support member 22 is placed may be two or more. The actuator 21 can perform height adjustment with high accuracy, and is composed of, for example, a pulse motor. From the viewpoint of adjusting the level, at least three actuators 21 may be provided. However, by providing the four actuators 21, a stable adjustment operation can be realized.

  On the vertical frame 11a, a guide member 23 for guiding the laser displacement sensor 14 in a horizontal state along the vertical frame 11a is provided. On the guide member 23, three laser displacement sensors 14 are provided. The supporting sensor support member 24 is moved, so that the laser displacement sensor 14 can be moved in the conveying direction of the object to be conveyed while maintaining the horizontal state. As the guide member 23, an LM guide capable of high-precision movement with little height fluctuation can be suitably used. The sensor support member 24 is arranged so as to extend perpendicularly to the vertical frame 11a and on both sides from the vertical frame 11a, and supports the three laser displacement sensors 14 at equal intervals. The center one of the three laser displacement sensors 14 is arranged at the center in the longitudinal direction of the transport roll 1.

  The laser displacement sensor 14 irradiates a laser beam vertically downward to measure (detect) the height position of the transport roll 1. As described above, the laser displacement sensor 14 continuously measures while moving in the direction of the vertical frame 11 a orthogonal to the longitudinal direction of the transport roll 1. Here, “continuous” means continuous measurement, and includes the case of periodic measurement at predetermined time intervals. The time interval at this time may be an interval that allows the apexes of the plurality of transport rolls 1 to be determined. If the diameter of the transport roll 1 is about 350 mm, it may be an interval of 2 mm or less (for example, 0.5 mm). That's fine.

  The drive mechanism 15 is provided at a position near one horizontal frame 11b of the vertical frame 11a, a drive pulley 26 attached to the shaft of the motor 25, and a position near the other horizontal frame 11b of the vertical frame 11a. And a timing belt 28 wound around the driving pulley 26 and the timing pulley 27 and arranged in parallel with the vertical frame, and the sensor support member 24 is fixed to the timing belt 28. Accordingly, by rotating the motor 25, the sensor support member 24 is moved along the guide member 23 by belt driving. The position of the sensor support member 24 is measured by a length measurement sensor 29 provided on one horizontal frame 11b.

  The control unit 16 is configured by a personal computer, for example, and includes a calculation unit (CPU), an input unit (keyboard, touch panel), a display, a printer, and the like, and four actuators of the adjustment mechanism 13 based on information of the electronic level 12 21 controls the leveling adjustment operation by the motor 21 and controls the movement of the support member 24 that supports the laser displacement sensor 14 by the motor 25 of the drive mechanism 15 and the detection operation by the laser displacement sensor 14. Further, the control unit 16 obtains the position information of the upper surface of the transport roll 1 as continuous data from the detection signal (measurement signal) of the laser displacement sensor 14 and the position information measured by the length measurement sensor 29, and the apex of the transport roll. Is detected, the relative roll height and roll diameter are calculated, and the results are output. These operations are automatically performed by only one click operation or touch operation from the operation screen on the display, and further only a button pressing operation.

  1 and 2, reference numeral 30 denotes a signal conversion / LAN communication unit for A / D conversion of signals and wireless LAN communication between the control unit 16 and each device. Reference numeral 31 denotes a cable bear (registered trademark), and reference numeral 32 denotes a limit switch.

Next, operation | movement of the measuring apparatus 10 of the conveyance roll level in the table roll installation comprised as mentioned above is demonstrated.
First, the frame structure 11 of the apparatus is installed at a predetermined position of the table roll facility 2. At this time, as shown in FIG. 2, the four support members 22 of the adjustment mechanism 13 are disposed so as to straddle the three transport rolls 1.

  In this state, first, horizontal control of the frame structure 11 is performed. The control at this time is performed by automatically controlling the adjustment mechanism 13 by the control unit 16 based on the information of the electronic level 12. Specifically, as shown in FIG. 3, the electronic level 12 detects the inclination from the horizontal state as the coordinates of the XY two axes, and adjusts the inclination by the four actuators (# 1 to # 4). The outline of the algorithm at that time will be described below with reference to the flowchart of FIG.

  In the following description, a commercially available two-axis tilt angle sensor (transmits angle data 10 times per second (10 Hz)) is used as the electronic level 12, and 0. An example of using a commercially available pulse motor that moves 008 mm and has a total stroke of 50 mm is shown.

  First, a horizontal reference (A value, unit: degree) is set (STEP 1). The level setting is completed when the signal of the electronic level is X: 0.02 and Y: 0.02. Since a negative value is converted to an absolute value, it is input as a positive value. Simultaneously with the setting of the horizontal reference, the brakes of the actuators # 1 to 4 are released.

  For all height adjustment actuators, the height is set to the origin position (STEP 2). Since the total stroke of the actuator is 50 mm, the origin position is set to a position of 25 mm, which is a half of the origin position. In this case, after lowering to the lowest limit and turning on the lower limit, it is set to the origin position by raising 25 mm.

  Next, the electronic level signal (B1 value) is received (STEP 3). The signal of the electronic level at this time is illustrated in FIG. In this example, X is +1.3 and Y is −0.9.

  Next, a horizontal plane creating operation is performed based on the signal of the electronic level (STEP 4). Here, the operation amount (C value) of the pulse motor is increased when the absolute value of the B1 value is 1 degree or more, and is decreased when it is less than 1 degree. For example, they are 0.4 mm and 0.2 mm, respectively. This is to increase the horizontal plane adjustment effect at any size of 1 degree or more. In addition, the magnitude | size of C value is not limited to this, It can set to an appropriate value.

Specifically, the operation is performed as follows.
(I) When X is +
If the B1 value is less than 1 degree in absolute value, the actuators (pulse motors) # 2 and # 4 are lowered by the C value.
If the B1 value is an absolute value of 1 degree or more, the actuators (pulse motors) # 1 and # 3 are raised by the C value.
(Ii) When Y is +
If the B1 value is an absolute value less than 1 degree, the actuators (pulse motors) # 1 and # 2 are lowered by the C value.
If the B1 value is an absolute value of 1 degree or more, the actuators (pulse motors) # 3 and # 4 are raised by the C value.
(Iii) When X is-
If the B1 value is an absolute value of less than 1 degree, the actuators (pulse motors) # 1 and # 3 are lowered by the C value.
If the B1 value is an absolute value of 1 degree or more, the actuators (pulse motors) # 2 and # 4 are raised by the C value.
(Iv) When Y is-
If the B1 value is an absolute value of less than 1 degree, the actuators (pulse motors) # 3 and # 4 are lowered by the C value.
If the B1 value is an absolute value of 1 degree or more, the actuators (pulse motors) # 1 and # 2 are raised by the C value.

  After one operation is performed based on the above rules, a time weight (no operation for a predetermined time, for example, 1.0 sec) is entered, and the next operation is performed. In this way, the operation of the actuator and the time weight are repeated a plurality of times. The reason why the time weight is set is to prevent the signal of the electronic level from fluctuating due to the movement of the pulse motor and the vibration of the frame structure that occurs as the height changes. The longer the time weight, the better the accuracy, but the time for forming the horizontal plane increases. Therefore, it is preferable to set appropriately according to these balance. The appropriate value of the time weight is considered to vary depending on the length and material of the frame structure. In this apparatus, 1.0 sec is the optimum time.

  Next, the limit position of the actuator is confirmed (STEP 5). When the lower limit switch or upper limit switch of the actuators # 1 to 4 is turned ON, an error is displayed and the horizontal control operation is terminated.

  If the lower limit switch or the upper limit is not turned ON, the electronic level signal (B2 value) after the horizontal plane creation operation is received (STEP 6).

  Next, the received B2 value is compared with the A value (STEP 7). If A value ≧ B2 value, the horizontal plane creating operation is finished, the brakes of the actuators (pulse motors) # 1 to 4 are mechanically locked (STEP 8), and the process is finished. Conversely, if A value <B2 value, STEP 4 is performed again.

  After the horizontal plane is formed in this way, the measurement of the transport roll level by the laser displacement sensor 14 is started. At the time of measurement, the sensor support member 24 is set at the initial position so that the laser displacement sensor 14 is at the initial position based on the control of the control unit 16, and the guide member 23 provided on the vertical frame 11 a by the drive mechanism 15. The sensor support member 24 is supported by the sensor support member 24 while moving on the plurality of transport rolls 1 by moving the sensor support member 24 in the transport direction of the transported body, that is, in a direction orthogonal to the transport roll 1 by belt driving. Laser is irradiated from the laser displacement sensor 14 vertically downward. Thereby, the positional information (distance) on the upper surface of the plurality of transport rolls 1 can be continuously measured. In addition, as mentioned above, the case where it measures continuously periodically for every predetermined time is also included here. In order to detect the transport roll level by the laser displacement sensor 14, it may be moved only in one direction, but it is preferable to perform the level detection by reciprocating from the viewpoint of reliable data acquisition.

  Based on the detection value of the laser displacement sensor 14 and the position information measured by the length measurement sensor 29, the control unit 16 automatically calculates the apex of each transport roll, and calculates the relative height and roll diameter of each transport roll. Calculate. The measurement result of the transport roll level is displayed on the screen by clicking or touching from the operation screen, and can be printed out as necessary.

  In this way, the electronic structure 12 and the actuator 21 are used to automatically form the frame structure 11 with a highly accurate horizontal plane, and the laser displacement sensor 14 is scanned on the frame structure 11 in which the horizontal plane is secured. On the other hand, the level (height) of the transport roll 1 is obtained with extremely high accuracy by irradiating the laser vertically to the transport roll 1 below and automatically detecting the position of the upper surface of the transport roll 1. Can do. Further, since the horizontal control operation and the measurement operation are automatically performed by only one click operation or touch operation, and further only a button press operation, it can be easily performed regardless of experience.

  FIG. 6 is a diagram showing an output screen when the transport roll level is actually measured. As shown in this figure, the contours of the measured upper surfaces of the plurality of transport rolls 1 can be drawn very precisely, and the height of the plurality of transport rolls can be measured with high accuracy from this data. For example, by using highly accurate electronic level 12, actuator 21, and laser displacement sensor 14, the height accuracy of the transport roll can be as high as ± 0.1 mm. Since the height of the transport roll can be measured with high accuracy in this way, the meandering of the transported body can be prevented, a product having no scratch can be obtained, and the product yield can be improved.

  In addition, since the laser displacement sensor 14 is provided in the center along the longitudinal direction of the transport roll and a plurality (three) of both sides thereof, it is possible to accurately grasp not only the height of the transport roll but also the degree of wear of the transport roll. You can also. Since the degree of wear can be accurately grasped in this way, it is possible to grasp the replacement time of the transport roll 1 and to use the transport roll to the limit. If only the height of the transport roll 1 is desired, one laser displacement sensor 14 may be used. Further, by increasing the number of laser displacement sensors 14, the wear state can be grasped with higher accuracy.

  After one measurement is completed, the frame structure 11 can be moved to the next position of the table roll equipment 2 to continuously measure the transport roll level. At this time, for example, by performing measurement including one reference roll shown in FIG. 2, the control unit 16 can connect the data to obtain continuous data. By repeating such an operation, the height of the entire transport roll 1 of the table roll facility 2 can be measured, and the number of transport rolls to be measured is not limited.

  Moreover, since it is comprised so that it may install in the table roll installation in the case of a measurement, the problem at the time of permanent installation does not arise. In addition, basically, since the structure is a simple structure in which an electronic level, an actuator, and a laser displacement sensor are attached to the frame structure, the facility does not become large. Moreover, since it is such a simple structure, height can be made low about 250 mm and it can respond also to a narrow installation.

  Furthermore, by forming the frame structure 11 with a lightweight metal such as aluminum, the weight can be reduced and the movement can be facilitated. For example, when the frame structure 11 is made of aluminum and the effective measurement span is about 2000 to 2500 mm, the weight can be about 40 kg and can be easily moved by two workers. In addition, it is not a large-scale facility and can be configured only with general-purpose parts, and it is not necessary to use special parts, so that it is inexpensive and can be easily maintained.

  Furthermore, since wireless LAN communication is performed between the control unit 16 and each device, no wiring is required, and the handling of measuring devices and the like is convenient.

The present invention is not limited to the above embodiment and can be variously modified.
For example, in the above embodiment, a single vertical frame is provided, and a sensor support member equipped with a laser displacement sensor travels thereon. However, two vertical frames are provided and travel on it. May be. Moreover, although the example which performs wireless LAN communication between a control part and each apparatus was shown in the said embodiment, it is not restricted to it. Furthermore, although the position of the laser displacement sensor is detected by the length measuring sensor, it may be detected by the encoder of the motor of the drive mechanism. Furthermore, although the laser displacement sensor is moved by belt driving, other driving methods such as driving by a ball screw mechanism may be used. Furthermore, although the laser displacement sensor is used for detecting the position of the transport roll, other displacement sensors may be used.

DESCRIPTION OF SYMBOLS 1 Conveyance roll 2 Table roll equipment 10 Conveyance roll level measuring apparatus 11 Frame structure 11a Vertical frame 11b Horizontal frame 12 Electronic level 13 Adjustment mechanism 14 Laser displacement sensor 15 Drive mechanism 16 Control part 21 Actuator 22 Support member 23 Guide member 24 Sensor support member 25 Motor 28 Timing belt 29 Measuring sensor 30 Signal conversion / LAN communication unit

Claims (11)

A measuring device for a transport roll level in a table roll facility for transporting a transported object by a plurality of transport rolls,
A movable frame structure arranged to straddle a plurality of transport rolls;
An electronic level for measuring the level of the frame structure;
An adjustment mechanism for adjusting the frame structure to a horizontal state;
A displacement sensor provided so as to be movable in a horizontal state in a direction perpendicular to the longitudinal direction of the transport roll along the frame structure, and continuously measuring a distance in the vertical direction with respect to the upper surface of the transport roll;
A drive mechanism for driving the displacement sensor in a direction perpendicular to the longitudinal direction of the transport roll;
Based on the information of the electronic level, the operation of adjusting the frame structure by the adjustment mechanism to a horizontal state is controlled, the movement of the displacement sensor by the drive mechanism and the detection operation thereof are controlled, and the displacement sensor And a control unit that calculates the height of the transport roll based on a signal from the transport roll level measuring device in the table roll facility.   The frame structure includes a vertical frame disposed along a direction orthogonal to the longitudinal direction of the transport roll, and a horizontal frame connected to both ends of the vertical frame and disposed along the longitudinal direction of the transport roll. The apparatus for measuring a transport roll level in a table roll facility according to claim 1, wherein the displacement sensor is provided so as to be movable along the vertical frame.   The transport in the table roll facility according to claim 2, further comprising a guide member provided along the vertical frame, and a sensor support member that supports the displacement sensor and travels on the guide member. Roll level measuring device.   The said sensor support member supports a some displacement sensor along the longitudinal direction of the said conveyance roll, The measuring apparatus of the conveyance roll level in the table roll installation of Claim 3 characterized by the above-mentioned.   The said displacement sensor is a laser displacement sensor, The measuring apparatus of the conveyance roll level in the table roll installation of any one of Claims 1-4 characterized by the above-mentioned.   The said adjustment mechanism has at least 3 actuator which adjusts the height of the said frame structure in a respectively different position, The conveyance in the table roll installation of any one of Claims 1-5 characterized by the above-mentioned. Roll level measuring device.   After the measurement of one transport roll level for a predetermined number of transport rolls is completed, the frame structure is moved to the next position of the table roll equipment and the measurement of the transport roll level is already performed. The apparatus for measuring a transport roll level in a table roll facility according to any one of claims 1 to 6, wherein measurement is performed on a plurality of transport rolls including the measured transport roll.   The said displacement sensor measures at the space | interval of the grade which can discriminate | determine the vertex of these conveyance rolls, The conveyance in the table roll installation of any one of Claim 1 to 7 characterized by the above-mentioned. Roll level measuring device. A movable frame structure disposed so as to straddle a plurality of transport rolls, an electronic level for measuring the level of the frame structure, and an adjustment mechanism for adjusting the frame structure to a horizontal state A displacement sensor provided so as to be movable in a horizontal state in a direction orthogonal to the longitudinal direction of the transport roll along the frame structure, and continuously measuring a distance in the vertical direction with respect to the upper surface of the transport roll; A transport roll level in a table roll facility that transports a body to be transported by a plurality of transport rolls using a transport roll level measuring device having a drive mechanism that drives the displacement sensor in a direction orthogonal to the longitudinal direction of the transport roll. A method for measuring
Installing the frame structure at a predetermined position of the table roll;
Based on the information of the electronic level, the adjustment mechanism makes the frame structure horizontal,
In that state, while moving the displacement sensor in the direction orthogonal to the longitudinal direction of the transport roll by the drive mechanism, measure the distance in the vertical direction continuously with respect to the upper surface of the transport roll by the displacement sensor,
A method for measuring a transport roll level in a table roll facility, wherein the height of the transport roll whose distance is measured by the displacement sensor is obtained based on the measurement data.   After the measurement of the transport roll level once for the predetermined number of transport rolls is completed by the transport roll level measuring device, the frame structure is moved to the next position of the table roll equipment to continue the transport roll level. 10. The method for measuring a transport roll level in a table roll facility according to claim 9, wherein the measurement is performed on a plurality of transport rolls including the transport rolls already measured.   The method of measuring a transport roll level in a table roll facility according to claim 9 or 10, wherein the displacement sensor performs measurement at an interval at which apexes of the plurality of transport rolls can be determined. .

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