CN107621247A - An online intelligent measuring device for the inner and outer curvature radius of plate rolling machine - Google Patents

Abstract

The invention provides an on-line intelligent measuring device for the inner and outer curvature radii of a plate rolling machine rolling plate, which comprises a ruler frame, a measuring arm, a main ruler rod, a spring, a spherical contact head, 2 ball grid ruler displacement sensors, an intelligent display and a self-positioning assembly, wherein the ruler frame is arranged on the measuring arm; the ruler frame comprises a vertical frame and a transverse frame; the measuring arm is of an inverted U-shaped structure which is bilaterally symmetrical and comprises a sliding block, a crank arm and a straight arm, wherein the sliding block is sleeved on the vertical frame; the number of the springs and the number of the spherical contact heads are respectively 3, and the springs and the spherical contact heads are arranged at the lower parts of the main ruler rod and the straight arm of the measuring arm; the intelligent display is fixedly arranged on the sliding block and positioned in front of the sliding block; the reading head of the first ball grid ruler displacement sensor and the reading head of the second ball grid ruler displacement sensor are both in signal electric connection with the intelligent display, and the measurement result is automatically displayed and can be output to a rolling roll displacement control system of the plate bending machine. The invention has simple structure, high measurement precision, convenient operation and strong applicability, and can conveniently realize the on-line intelligent measurement of the inner and outer curvature radii of the rolling plate.

Description

An online intelligent measuring device for the inner and outer curvature radius of plate rolling machine

This application is a divisional application of the invention patent application with the application number 201510202410.9, the application date is April 24, 2015, and the invention name is "on-line intelligent measurement device for the inner and outer curvature radius of plate rolling machine".

technical field

The invention relates to a plate rolling measuring device for a plate rolling machine, in particular to an online intelligent measuring device for the inner and outer curvature radii of the plate rolling machine.

Background technique

With the development of shipbuilding, petrochemical, boiler and pressure vessel industries, the demand for coils in various forms and specifications is increasing, and higher requirements are put forward for the control and measurement of the curvature radius of the coils rolled by the coiling machine . At present, the measurement of the radius of curvature of the coiled plate of the plate rolling machine generally adopts an arc-shaped sample ruler made in advance, and is compared with the rolled plate to be tested. This method of comparison and measurement using standard templates has poor applicability. For coils with a curvature radius of each specification, a corresponding standard template needs to be produced. At the same time, this manual comparison measurement needs to be carried out in a shutdown state, which is costly and efficient. Low, the measurement can only rely on visual inspection, the visibility is poor, there are large human factors, and the measurement accuracy is low.

The radius of curvature during roll bending is a dynamic process of change. Only by monitoring the change of curvature radius at any time can high-quality and high-standard coils be produced. The Chinese patent document with the publication number CN 202582508U and the title of invention "A device for measuring the radius of curvature of plate rolling machine roll forming" provides a device for measuring the radius of curvature of plate roll forming machine. The telescopic tube is installed in the side and vertical direction, the displacement is detected by the displacement sensor, and the measured curvature radius value is displayed by the intelligent control box. The disadvantages of this measuring device are: (1) Because it adopts a cross-shaped hollow tube structure, it can only measure the curvature radius of the inner surface of the coil, but not the curvature radius of the outer surface of the coil; (2) the measurement The device cannot guarantee that the expansion and contraction of the expansion tubes on both sides are equal, and the operation requirements are relatively strict. Only when the displacement of the expansion tubes on both sides happens to be equal, that is, the extension line of the vertical tube passes through the center of the coiling plate, can accurate measurement results be obtained, so it is generally difficult Obtain satisfactory measurement accuracy.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of existing measuring devices and provide a plate rolling machine with simple structure, high measurement accuracy, convenient operation, strong applicability, and convenient online intelligent measurement of the inner and outer curvature radii of the coiled plate. On-line intelligent measuring device for the radius of curvature inside and outside the board.

The technical solution of the present invention is: the online intelligent measuring device for the inner and outer curvature radius of the plate rolling machine of the present invention, and its structural characteristics are: including a ruler frame, a measuring arm, a main ruler rod, a spring, a spherical contact head, and a first ball grid ruler Displacement sensor, second ball scale displacement sensor, intelligent display, self-positioning component, limit bolt, locking screw, bending machine frame and coil to be tested;

The above-mentioned ruler frame includes a vertical frame and a horizontal frame; the vertical frame and the horizontal frame are hollow cuboid parts; the vertical frame and the horizontal frame are vertically connected; the vertical frame and the horizontal frame are all composed of a box body and a front cover; There is a crosspiece; the crosspiece is provided with a passage hole for the main ruler; the left and right sides of the box body of the crossframe are respectively provided with up and down straight arm passage holes; the middle of the box body of the crossframe is provided with a passage hole for the main ruler ;

The measuring arm includes a slider, a curved arm and a straight arm; the curved arm and the straight arm are integrally connected, and the upper end of the curved arm is fixedly connected with the slider; there are two curved arms and two straight arms, and the two curved arms and the straight arm are separately On the left and right sides of the slider; so that the measuring arm as a whole has a left-right symmetrical inverted U-shaped structure; the slider is socketed on the vertical frame and can slide up and down depending on the vertical frame, and the middle and lower parts of the left and right straight arms pass through the horizontal frame respectively The straight arm extends downward after passing through the hole;

The main ruler is a rectangular parallelepiped rod; the middle and lower part of the main ruler passes through the main ruler of the crosspiece of the vertical frame through the hole and the main ruler of the box of the horizontal frame passes through the hole and protrudes downwards from top to bottom ;

There are 3 springs, and the 3 springs are respectively set on the lower part of the main ruler rod and the left and right two straight arms;

There are three spherical contact heads, and one of the three spherical contact heads is fixedly installed on the main ruler rod and the lower ends of the two left and right straight arms respectively;

The first ball grid displacement sensor includes a scale body and a reading head; the scale body of the first ball grid scale displacement sensor is the main scale rod, and its reading head is fixedly installed in the box body of the horizontal frame;

The second ball grid displacement sensor includes a scale body and a reading head; the scale body of the second ball grid scale displacement sensor is fixedly installed on the crosspiece of the vertical frame and is located above the crosspiece; the reading head of the second ball grid scale displacement sensor fixedly installed on the slider;

The smart display includes a housing, a display screen and a data input port arranged on the housing, and a battery, an A/D converter and a single-chip microcomputer arranged in the housing; the smart display is fixedly installed on the slider and is located in front of the slider; Both the reading head of the first ball grid displacement sensor and the reading head of the second ball grid displacement sensor are electrically connected to the intelligent display signal;

The self-positioning component includes a positioning block and a hinge; the positioning block is provided with screw holes for connection; the positioning block is hinged and installed on the upper end of the vertical frame by the hinge;

The upper right side of the above-mentioned vertical frame is provided with a limit bolt hole; the middle of the slider is provided with a locking screw hole; the upper part of the main ruler is provided with a screw hole; The screw holes and the screw holes of the main ruler rod cooperate to fasten the slider and the main ruler rod on the ruler frame; the limit bolts are set in the limit bolt holes of the vertical frame to limit the slider and the main ruler rod ;

The up and down sliding of the above-mentioned slider drives the left and right two straight arms to do up and down telescopic movement relying on the horizontal frame of the ruler frame, and the amount of expansion and contraction is equal to the displacement of the slider, so that the lower ends of the spherical contact heads on the left and right sides are always on the same plane ;

When in use, the above-mentioned self-positioning assembly is fixed and installed on the frame of the plate rolling machine by bolts through the screw holes on the positioning block, and can rotate freely left and right under the action of external force, so as to ensure that the two spherical contact heads are consistent with the plate to be tested. Simultaneous contact.

The present invention has positive effects: (1) The online intelligent measuring device for the inner and outer curvature radius of the plate rolling machine of the present invention can be used not only for measuring the inner diameter of the plate rolling, but also for measuring the inner diameter of the plate without any adjustment. The measurement of the outer diameter of the coil has strong adaptability. (2) The online intelligent measuring device for the inner and outer curvature radii of the coiling machine of the present invention realizes automatic online measurement without manual operation and automatically displays the measurement results when the machine is running, and is easy to use. (3) The online intelligent measuring device for the inner and outer curvature radii of the plate rolling machine of the present invention has a simple structure and low cost. (4) The online intelligent measuring device for the inner and outer curvature radius of the plate rolling machine of the present invention ensures that the spherical contact heads on the left and right straight arms are always on the same plane through the structural design, thereby ensuring the measurement accuracy, and at the same time by setting the self-positioning The component enables the spherical contact head to be in good contact with the coil during the online automatic measurement, avoiding the phenomenon of jamming, and further enhancing its applicability.

Description of drawings

Fig. 1 is a structural representation of the present invention, among the figure, the front cover plate that omits the chi frame for displaying the internal structure of the chi frame is not drawn;

Fig. 2 is the schematic diagram when the present invention is used for measuring the radius of curvature of the coiled plate inner surface;

Fig. 3 is the schematic diagram when the present invention is used for measuring the radius of curvature of the outer surface of the coil;

Fig. 4 is the schematic diagram of the present invention measuring the radius of curvature of the outer surface of the coiled plate;

Fig. 5 is a schematic diagram of the present invention for measuring the radius of curvature of the inner surface of the rolled plate.

The reference signs in the above-mentioned accompanying drawings are as follows:

Ruler frame 1, vertical frame 1-1, crosspiece 1-1-1, horizontal frame 1-2,

Measuring arm 2, slider 2-1, curved arm 2-2, straight arm 2-3,

main rod 3,

spring 4,

spherical contact head 5,

The first ball scale displacement sensor 6, the reading head 6-1,

The second ball scale displacement sensor 7, the ruler body 7-1,

Smart Display 8,

Self-positioning assembly 9, positioning block 9-1, screw hole 9-1-1, hinge 9-2,

Limit bolt 10,

Locking screw 11,

data line 12,

The coil to be tested 13.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

(Example 1)

See Fig. 1 and Fig. 2, the on-line intelligent measuring device for the inner and outer curvature radius of the plate rolling machine of the present embodiment mainly consists of a ruler frame 1, a measuring arm 2, a main ruler rod 3, a spring 4, a spherical contact head 5, and a first ball Scale displacement sensor 6, second ball scale displacement sensor 7, smart display 8, self-positioning component 9, limit bolt 10, locking screw 11 and data line 12.

Ruler frame 1 is made up of vertical frame 1-1 and horizontal frame 1-2. Both the vertical frame 1-1 and the horizontal frame 1-2 are hollow cuboids; the vertical frame 1-1 and the horizontal frame 1-2 are vertically connected, and the whole is in an inverted T shape. Both the vertical frame 1-1 and the horizontal frame 1-2 are composed of a box body and a front cover plate. When assembling, the front cover plate is fixedly connected with the box body by screws; the vertical frame 1-1 is also provided with a crosspiece 1-1- 1. The upper right side of the vertical frame 1-1 is provided with a limit bolt hole; the crosspiece 1-1-1 is provided with a vertical main rod passing hole; the left and right sides of the box body of the horizontal frame 1-2 Each is provided with up and down straight arm passage holes; the middle of the box body of the horizontal frame 1-2 is provided with up and down main ruler rod passage holes.

The measuring arm 2 is a left-right symmetrical inverted U-shaped structural member. Measuring arm 2 is made up of slide block 2-1, curved arm 2-2 and straight arm 2-3, and curved arm 2-2 and straight arm 2-3 are integrally connected, and the upper end of curved arm 2-2 is connected with slide block 2-1 fixedly connected; the curved arm 2-2 and the straight arm 2-3 are each provided with two, and the two curved arms 2-2 and the straight arm 2-3 are respectively arranged on the left and right sides of the slider 2-1; the slider 2- 1 is socketed on the vertical frame 1-1 of the ruler frame 1 and can slide up and down depending on the vertical frame 1-1; the middle of the slider 2-1 is provided with a locking screw hole. The middle and lower parts of the left and right 2 straight arms 2-3 respectively pass through the straight arms on the left and right sides of the box body of the cross frame 1-2 and stretch out downwards after passing through the holes.

The structure of the measuring arm 2 enables the slider 2-1 and the two straight arms 2-3 to move up and down synchronously when it is working, and the stretching amount of the straight arm 2-3 is equal to the displacement of the slider 2-1. And it can ensure that the lower ends of the spherical contact heads 5 on the left and right sides are always on the same plane.

The main ruler rod 3 is a rectangular parallelepiped rod-shaped part; the upper part of the main ruler rod 3 is provided with a screw hole, which is used for fixing the position when it is not working; the middle and lower part of the main ruler rod 3 passes through the vertical frame 1- The main chi rod of the crosspiece 1-1-1 of 1 passes through the hole and the main chi rod of the box body of the cross frame 1-2 stretches out downwards after passing through the hole.

Spring 4 is provided with 3, and these 3 springs 4 respectively suit 1 respectively at the bottom of main chi rod 3 and 2 left and right straight arms 2-3.

There are three spherical contact heads 5, each of which is fixedly installed at the lower ends of the main ruler bar 3 and the left and right two straight arms 2-3. When in use, the spherical contact head 5 is used for circular arc contact with the roll plate 13 to be tested.

Due to the aforementioned structure and working principle of the measuring arm 2, it can be ensured that the lower ends of the left and right spherical contact heads 5 are always on the same plane during operation.

The first ball grid scale displacement sensor 6 includes a scale body and a reading head 6-1; the scale body of the first ball grid scale displacement sensor 6 is the main scale rod 3, and its reading head 6-1 is fixedly installed on the horizontal frame 1-2 Inside the box, the first ball scale displacement sensor 6 is used to detect the movement and expansion of the main scale rod 3 .

The second ball grid scale displacement sensor 7 includes a scale body 7-1 and a reading head; the scale body 7-1 of the second ball grid scale displacement sensor 7 is fixedly installed on the crosspiece 1-1-1 of the vertical frame 1-1 and Located above the crosspiece 1-1-1; the reading head of the second ball scale displacement sensor 7 is fixedly installed on the slider 2-1; the second ball scale displacement sensor 7 is used to detect the movement of the slider 2-1 The amount of expansion and contraction, that is, the amount of expansion and contraction of the straight arm 2-3.

The intelligent display 8 is fixedly installed on the slider 2-1 and is positioned in front of the slider 2-1; the intelligent display 8 is mainly composed of a housing, a display screen and a data input port arranged on the housing, and a battery arranged in the housing, Composed of A/D converter and microcontroller. The reading head 6-1 of the first ball grid displacement sensor 6 is electrically connected with the intelligent display 8 signal through the data line 12; the reading head of the second ball grid displacement sensor 7 is also electrically connected with the intelligent display 8 signal through the data line; When in use, the detection data of the reading heads of the two ball scale displacement sensors are sent to the A/D converter through the data input port of the intelligent display 8, and after signal conversion, the single-chip computer performs calculation and processing, and the detection results are displayed on the display screen.

The self-positioning assembly 9 is made up of a positioning block 9-1 and a hinge 9-2; the positioning block 9-1 is provided with a screw hole 9-1-1 for connection; in the present embodiment, the screw hole 9-1-1 is preferably uniform Set 4. During assembly, the positioning block 9-1 is hingedly installed on the upper end of the vertical frame 1-1 through the hinge 9-2; the screw hole 9-1-1 on the positioning block 9-1 is used to fix the positioning block by bolts during use On the frame of the plate rolling machine, the positioning block 9-1 can freely rotate left and right under the action of external force, because it is hinged with the support 1, so as to ensure good contact between the spherical contact head 5 and the plate to be tested 13 during use, to avoid During online automatic measurement, the spherical contact head 5 on one side has been attached to the coiled plate, but the spherical contact head 5 on the other side has not been in good contact with the coiled plate due to being stuck on the coiled plate.

The limit bolt 10 and the locking screw 11 are used in the non-working state of the on-line intelligent measurement of the inner and outer curvature radii of the plate bending machine in this embodiment, when the online intelligent measurement device for the inner and outer curvature radii of the plate bending machine in this embodiment does not need to work , screw the limit bolt 10 into the limit bolt hole on the upper right side of the vertical frame 1-1; at the same time, screw the locking screw 11 into the locking screw hole in the middle of the slider 2-1 and the main ruler rod 3 The upper screw hole, so as to fasten the slider 2-1 and the main ruler rod 3 on the ruler frame 1; at the same time, the limit bolt 10 blocks the slider 2-1 and the main ruler rod 3 from above under the elastic force of the spring 4 of upward movement. At this time, the springs 4 on the main ruler rod 3 and the straight arm 2-3 are all in a compressed state and the lower ends of the three spherical contact heads 5 are on the same plane; at this time, the first ball scale displacement sensor 6 and the second ball grid The readings that ruler displacement sensor 7 detects are all zero.

Referring to Figure 4 and Figure 5, the online intelligent measurement of the inner and outer curvature radii of the plate rolling machine of this embodiment is based on the principle of "three points forming a circle". Let the radius of the circle be R and the length of the chord AB be 2 L , the chord height is Δ H , in RtΔOAD it is obtained by the Pythagorean theorem

(Formula 1)

According to the above theoretical analysis, when the diameter is perpendicular to the chord, the chord height value can be obtained by measuring ΔH, and the curvature radius R can be easily calculated by formula 1 when the chord length is known.

Still see Fig. 2 and Fig. 3, the online intelligent measurement of the inner and outer curvature radii of the plate rolling machine of this embodiment, when in use, loosen the locking screw 11, the main ruler rod 3 and the straight arm 2-3 are in the compressed state Stretch downward under the elastic force of the lower spring 4, when measuring the inner diameter of the roll plate 13 to be measured, the stretching amount of the main chi rod 3 is greater than the stretching amount of the two straight arms 2-3; When the external diameter of plate 13, the stretching amount of 2 straight arms 2-3 is greater than the stretching amount of main chi rod 3; The difference of stretching amount is the chord height value; The ball scale displacement sensor 6 measures and sends it to the intelligent display 8 for processing; the extension of the straight arm 2-3 is measured by the second ball scale displacement sensor 7 and sent to the intelligent display 8 for processing, and the intelligent display 8 displaces the two ball scales The chord height value can be obtained by performing difference processing on the readings of the sensor; then the smart display calculates the radius of curvature R of the coil to be tested according to the aforementioned calculation formula built in (the chord length is fixed and known), and the calculation result is displayed in real time on the display screen , and at the same time output the data to the control system of the plate rolling machine for real-time adjustment of the roll displacement.

The above embodiments are descriptions of specific implementations of the present invention, rather than limitations of the present invention. Those skilled in the relevant technical fields can make various transformations and changes without departing from the spirit and scope of the present invention to obtain corresponding Therefore, all equivalent technical solutions should fall into the scope of patent protection of the present invention.

Claims (1)

1. An online intelligent measuring device for the inner and outer curvature radii of a plate rolling machine, characterized in that it includes a ruler frame (1), a measuring arm (2), a main ruler rod (3), a spring (4), and a spherical contact head ( 5), the first ball scale displacement sensor (6), the second ball scale displacement sensor (7), the smart display (8), the self-positioning component (9), the limit bolt (10), the locking screw (11 ), the plate rolling machine frame and the plate to be tested (13); The ruler frame (1) includes a vertical frame (1-1) and a horizontal frame (1-2); the vertical frame (1-1) and the horizontal frame (1-2) are hollow cuboid parts; the vertical frame ( 1-1) and the horizontal frame (1-2) are vertically connected; both the vertical frame (1-1) and the horizontal frame (1-2) are composed of a box body and a front cover; the vertical frame (1-1) has a There is a crosspiece (1-1-1); the crosspiece (1-1-1) is provided with a main rod passing hole; the left and right sides of the box body of the crosspiece (1-2) are respectively provided with up and down straight The arm passes through the hole; the middle of the box body of the horizontal frame (1-2) is provided with the main ruler through the hole; The measuring arm (2) includes a slider (2-1), a curved arm (2-2) and a straight arm (2-3); the curved arm (2-2) and the straight arm (2-3) are integrally connected, and the curved arm The upper end of (2-2) is fixedly connected with slide block (2-1); crank arm (2-2) and straight arm (2-3) are respectively provided with 2, and these 2 crank arms (2-2) and The straight arm (2-3) is separately arranged on the left and right sides of the slider (2-1); so that the measuring arm (2) has a left-right symmetrical inverted U-shaped structure as a whole; the slider (2-1) is socketed on the vertical frame (1-1) and can rely on the vertical frame (1-1) to slide up and down, and the middle and lower parts of the left and right two straight arms (2-3) respectively pass through the straight arms of the horizontal frame (1-2) and extend downwards out; The main ruler (3) is a cuboid rod-shaped part; the middle and lower part of the main ruler (3) passes through the main ruler of the crosspiece (1-1-1) of the vertical frame (1-1) from top to bottom in turn The main ruler bar of the box body of the hole and the cross frame (1-2) protrudes downwards after passing through the hole; There are 3 springs (4), and the 3 springs (4) are respectively set in the lower part of the main ruler rod (3) and the left and right 2 straight arms (2-3); Three spherical contact heads (5) are provided, and the three spherical contact heads (5) are respectively fixedly installed on the lower ends of the main ruler (3) and the left and right two straight arms (2-3); The first ball grid displacement sensor (6) includes a scale body and a reading head (6-1); the scale body of the first ball grid scale displacement sensor (6) is the main scale rod (3), and its reading head (6- 1) Fixedly installed in the box body of the horizontal frame (1-2); The second ball grid displacement sensor (7) includes the scale body (7-1) and the reading head; the scale body (7-1) of the second ball grid scale displacement sensor (7) is fixedly installed on the vertical frame (1-1) The crosspiece (1-1-1) is located above the crosspiece (1-1-1); the reading head of the second ball scale displacement sensor (7) is fixedly installed on the slider (2-1); The smart display (8) includes a housing, a display screen and a data input port arranged on the housing, and a battery, an A/D converter and a single-chip microcomputer arranged in the housing; the smart display (8) is fixedly installed on the slider (2- 1) on and in front of the slider (2-1); the readhead (6-1) of the first ball scale displacement sensor (6) and the readhead of the second ball scale displacement sensor (7) are connected with the intelligent Display (8) signal electrical connection; The self-positioning assembly (9) includes a positioning block (9-1) and a hinge (9-2); the positioning block (9-1) is provided with a screw hole (9-1-1) for connection; the positioning block (9-1) 1) It is hingedly installed on the upper end of the vertical frame (1-1) by the hinge (9-2); The upper right side of the vertical frame (1-1) is provided with a limit bolt hole; the middle of the slider (2-1) is provided with a locking screw hole; the upper part of the main ruler (3) is provided with a screw hole; In the non-working state, the locking screw (11) cooperates with the locking screw hole of the slider (2-1) and the screw hole of the main ruler (3) to connect the slider (2-1) and the main ruler (3) Fasten it on the ruler frame (1); the limit bolt (10) is set in the limit bolt hole of the vertical frame (1-1), and is used to adjust the sliding block (2-1) and the main ruler rod (3). limit; The up and down sliding of the slider (2-1) drives the left and right two straight arms (2-3) to do up and down telescopic movement relying on the horizontal frame (1-2) of the ruler frame (1), and the amount of stretching is equal to that of the slider (2-1) so that the lower ends of the spherical contact heads (5) on the left and right sides are always on the same plane; When in use, the self-positioning assembly (9) is fixed and installed on the plate rolling machine frame through the screw holes (9-1-1) on the positioning block (9-1) and can be positioned under the action of external force. Freely rotate left and right to ensure that the two spherical contact heads (5) are in contact with the coil to be tested (13) simultaneously.