CN219348445U - Plate-shaped measuring roller capable of measuring density doubly - Google Patents

Abstract

The utility model relates to a piezoelectric measuring roller technology, in particular to a plate-shaped measuring roller with double measuring density. The plate-shaped measuring roller for double measuring density comprises a roller core, a roller sleeve and a sensor assembly, wherein the roller core comprises a roller body and a roller shaft, the roller shaft is a cylindrical hollow roller body, the roller shaft is coaxially assembled at two ends of the roller body, the roller sleeve is coaxially assembled outside the roller body, a plurality of stress measuring points are arranged on the surface of the roller body and are distributed at intervals in the axial direction and the radial direction of the roller body, the sensor assembly is assembled in an inner cavity of the roller body, and the stress measuring points are respectively connected with the sensor assembly through a force transmission piece penetrating through the roller body. The advantages are that: the structure design is simple and reasonable, and the axial cross section measuring point can be encrypted simultaneously and the circumferential measuring frequency can be increased, so that the measuring precision of the piezoelectric plate-shaped measuring roller is improved.

Description

Plate-shaped measuring roller capable of measuring density doubly

Technical Field

The utility model relates to a piezoelectric measuring roller technology, in particular to a plate-shaped measuring roller with double measuring density.

Background

The piezo-type strip-form measuring roller measures strip-form errors in a strip, in particular a metal strip, by measuring the strip tensile stress distribution over the width of the strip. The strip, which is under tensile stress of the strip over the entire strip width, is pressed against the roll surface of the plate-shaped measuring roll with a predetermined wrap angle, since the tensile stress applied to the strip has a wrap angle relative to the roll surface, the longitudinal tensile stress distribution produces a radial component force on the roll surface of the plate-shaped measuring roll in the strip width direction, which component force is directed toward the roll axis, and the distribution of the strip tensile stress can be deduced from the radial component force. Finally, the elongation difference of the strip in the longitudinal direction can be directly measured through the tensile stress distribution in the width of the strip, so that the warping degree of the strip is obtained.

The main current piezoelectric plate-shaped measuring roller adopts a mode that sensors are spirally arranged along the surface of the roller body (the fact that two adjacent sensors are projected in the circumferential direction is assumed to differ by N degrees). This arrangement results in a spacing of 360/N-1 measuring elements between two adjacent measuring elements capable of detecting tensile stress on an axial measuring section, resulting in a larger error between the detected plate shape and the actual plate shape.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a plate-shaped measuring roller with double measuring density, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a plate-shaped measuring roller of double measurement density, includes roller core, roller shell and sensor subassembly, above-mentioned roller core includes roll body and roller, above-mentioned roll body is cylindric hollow roll body, above-mentioned roller coaxial assembly is at above-mentioned roll body both ends, above-mentioned roller shell coaxial assembly is outside the roll body, above-mentioned roll body surface is equipped with many stress measuring points, and many stress measuring points are at the axial and radial interval distribution of above-mentioned roll body, above-mentioned sensor subassembly is assembled in the inside cavity of above-mentioned roll body, above-mentioned stress measuring point is connected with above-mentioned sensor subassembly through the force transmission piece that passes above-mentioned roll body respectively.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the surface of the roll body is provided with two groups of through grooves along the axial direction of the roll body, each group of through grooves is provided with two through grooves, the two through grooves of each group are distributed in an angle with the axis of the roll body as a central line, the two adjacent through grooves are distributed in an angle with the axis of the roll body as a central line, the bottoms of the two through grooves of each group are respectively provided with a plurality of through holes in one-to-one correspondence along the axial direction of the roll body at intervals, the through holes penetrate through the side wall of the roll body in the radial direction of the roll body, force columns are respectively penetrated at the corresponding two through holes, a force sensor is connected between one ends, close to each other, of the two corresponding force columns, of each through groove is embedded and fixed with a strip-shaped wedge body, the wedge body is propped against the roll sleeve, the force columns are respectively connected with the corresponding wedge bodies, the force columns form the force transmission pieces, all the force sensors jointly form the sensor assemblies, and the through holes on the two through grooves of different groups are distributed alternately along the axial direction of the roll body.

Further, the cross section of the through groove along the radial direction of the roll body is trapezoid, the shorter bottom edge of the trapezoid falls on the surface of the roll body, the other bottom edge of the trapezoid is close to the center line of the roll body, and the cross section of the wedge body is trapezoid matched with the through groove.

Further, the through hole is a tapered hole, the tapered tip of the through hole faces the corresponding through groove, and the force column is a tapered column.

Further, cylindrical back caps are respectively fixed at the ends of the two corresponding force columns, which are close to each other, and the force sensor is positioned between the two corresponding back caps.

Further, positioning columns are respectively arranged at one ends of the two corresponding back caps, which are close to each other, and positioning holes which are in plug-in fit with the positioning columns are respectively arranged at two ends of the force sensor.

Further, a circle of spline grooves are respectively arranged on the cavity walls at the two ends of the inner cavity of the roll body, a circle of spline is arranged on the periphery of one end of the roll shaft, one end of the roll shaft is inserted into the spline grooves at the corresponding end of the roll body, a flange attached to the end part of the roll body is coaxially arranged on the periphery of the roll shaft, and the flange is fixedly connected with the end part of the corresponding end of the roll body through a bolt.

The beneficial effects of the utility model are as follows: the structure design is simple and reasonable, and the axial cross section measuring point can be encrypted simultaneously and the circumferential measuring frequency can be increased, so that the measuring precision of the piezoelectric plate-shaped measuring roller is improved.

Drawings

Fig. 1 is a schematic view of a structure of a plate-shaped measuring roller of double measuring density of the present utility model;

FIG. 2 is a structural exploded view of a plate-shaped measuring roller of double measuring density of the present utility model;

FIG. 3 is a schematic view showing the structure of a roll body in a double-measured density plate-shaped measuring roll of the present utility model;

FIG. 4 is a schematic view showing the structure of the force transmitter connected to the sensor assembly in the double-measured density plate-shaped measuring roller of the present utility model;

FIG. 5 is an exploded view of the force sensor and back cap of FIG. 4A.

In the drawings, the list of components represented by the various numbers is as follows:

1. a roll core; 2. a roller sleeve; 3. a force sensor; 11. a roll body; 12. a roll shaft; 31. a back cap; 32. positioning holes; 111. a through groove; 112. a through hole; 113. a force column; 114. a wedge; 115. spline grooves; 121. a spline; 122. a flange; 311. and positioning columns.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples: as shown in fig. 1 to 5, the plate-shaped measuring roller for double measuring density of the present embodiment comprises a roller core 1, a roller sleeve 2 and a sensor assembly, wherein the roller core 1 comprises a roller body 11 and a roller shaft 12, the roller body 11 is a cylindrical hollow roller body, the roller shaft 12 is coaxially assembled at two ends of the roller body 11, the roller sleeve 2 is coaxially assembled outside the roller body 11, a plurality of stress measuring points are arranged on the surface of the roller body 11, the stress measuring points are distributed at intervals in the axial direction and the radial direction of the roller body 11, the sensor assembly is assembled in an inner cavity of the roller body 11, and the stress measuring points are respectively connected with the sensor assembly through a force transmission member penetrating through the roller body 11.

In this embodiment, by uniformly distributing stress measuring points in the circumferential direction and the radial direction of the roll body 11, it is possible to encrypt the axial cross section measuring points simultaneously and increase the circumferential measuring frequency, thereby improving the measuring accuracy of the piezoelectric plate-shaped measuring roll.

In a preferred embodiment, the surface of the roll body 11 is provided with two sets of through grooves 111 along the axial direction thereof, each set of through grooves 111 is provided with two through grooves 111, the two through grooves 111 of each set are distributed at 180 ° about the axis of the roll body 11, the adjacent two through grooves 111 are distributed at 90 ° about the axis of the roll body 11, the bottoms of the two through grooves 111 of each set are respectively provided with a plurality of through holes 112 corresponding to each other at intervals along the axial direction of the roll body 11, the through holes 112 penetrate through the side wall of the roll body 11 along the radial direction of the roll body 11, the corresponding two through holes 112 are respectively provided with a force column 113, a force sensor 3 is connected between one ends of the two corresponding force columns 113, which are close to each other, wedge bodies 114 are respectively embedded and fixed in the through grooves 111, the wedge bodies 114 are abutted against the roll sleeve 2, the force columns 113 are respectively connected with the corresponding wedge bodies 114, the force columns 113 constitute the force transmission members, the two wedge bodies 3 are respectively distributed along the axial direction of the roll body 11, and the two sensor assemblies are mutually distributed along the axial direction of the two through holes 11.

In this embodiment, the roll body 11 is divided axially into a plurality of logical annular measuring segments. From the single logical annular measuring section, each annular measuring section is provided with two stress measuring points at 180 degrees different in the circumferential direction, and the connecting line of the centers of the stress measuring points is perpendicular to the axis of the roller body 11. In this way, the force sensor 3 is used for measuring the force of two measuring points on the outer circle of the roller body 11, so that the density of the measuring points on the surface of the strip is improved under the condition of the same number of sensors, and higher strip shape measuring precision is achieved. And the central connecting lines of two measuring points in two adjacent logic annular measuring sections are different by a fixed angle in space from the whole measuring roller, so that the measuring points are arranged in a double spiral shape along the roller surface, and the measuring precision is improved.

In addition, it should be noted that: the roller body 11 is thick-wall cylindrical, and the outer surfaces of the roller body 11 are spaced at the same angle (for example, 20 degrees, 30 degrees, 45 degrees, 60 degrees, or 90 degrees), that is, the through grooves 111 can be designed into a plurality of groups according to practical use requirements, such as: three groups, four groups, etc., in this embodiment, two groups are optimally designed.

What needs to be specifically stated is: a wedge 114 formed by forging and numerical control machining is placed in the through groove 111, and the rigidity of the wedge 114 is ensured when the purpose of forging a workpiece is adopted. The wedge 114 can be perfectly embedded into a through groove and moves up and down in the through groove 111 along the radial direction in a space (3-5 mm), in addition, the cross section of the through groove 111 along the radial direction of the roll body 11 is designed into a trapezoid, the shorter bottom edge of the trapezoid falls on the surface of the roll body 11, the other bottom edge of the trapezoid is close to the center line of the roll body 11, the cross section of the wedge 114 is designed into a trapezoid matched with the through groove 111, when the wedge 114 moves outwards along the radial direction to the top end (outer surface) of the roll body 11, two inclined surfaces of the wedge 114 are tightly attached to the inclined surfaces of the two sides of the through groove 111, and the outer surface of the wedge 114 is designed into an arc surface matched with the outer surface of the roll body 111, so that the two surfaces together form a complete cylindrical surface.

In this embodiment, the through hole 112 is a tapered hole, and the tapered tip thereof faces the corresponding through slot 111, and the force column 113 is a tapered column.

In this embodiment, the force column 113 is also formed by forging and numerical control machining, and the purpose of the forging work is also to ensure the rigidity of the force column 113, particularly the high rigidity of the force column 113 in the axial direction. When the force column 113 is completely attached to the through hole 112 on the roll body 11 on the conical surface, the force column 113 protrudes from the bottom wall of the through groove 111, and the protruding height is the same as the clearance between the wedge 114 and the bottom of the through groove 111 (3-5 mm).

In the present embodiment, cylindrical back caps 31 are fixed to the ends of the corresponding two force columns 113, respectively, which are close to each other, and the force sensor 3 is positioned between the corresponding two back caps 31. The back cap 31 is in close contact with the force sensor 3.

Preferably, positioning posts 311 are respectively disposed at one ends of the two corresponding back caps 31, which are close to each other, and positioning holes 32 are respectively disposed at two ends of the force sensor 3, which are in plug-in fit with the positioning posts 311.

In the above-mentioned scheme, the back cap 31 ensures the mounting and positioning accuracy of the force sensor 3 through the positioning hole 32 (blind hole) of the contact end surface thereof with the force sensor 3 and the positioning post 311 in the center, and no displacement change occurs between the force sensor 3 and the back cap 31 during long-term use. The back caps 31 at the two ends are not contacted with each other, and are only in close contact with one end face of the force sensor 3, so that when external force is applied to the back caps 31, the force is completely transmitted to the force sensor 3, and force split is avoided.

Further, in order to achieve that the tensile stress of the strip can be accurately transmitted to the force sensor arranged on the central axis of the roll body. All of the components on the force transmission chain, including: the wedge 114, the force column 113 and the back cap 31 all adopt positive interference processing. Therefore, after the whole force transmission chain is assembled, because all the parts are positively interfered, all the parts on the whole force transmission chain are mutually extruded, and the stress on the roller body 11 can be transmitted to the force sensor 3. The force sensor 3 is subjected to a preload directed inwardly of the center of the circle. And the reaction force applied by the wedge 114 and the force column 113 and directed to the outside of the circle center is borne by the inclined surfaces of the through hole 112 and the groove 111.

In a preferred embodiment, a spline groove 115 is provided on each of the two end walls of the inner cavity of the roll body 11, a spline 121 is provided on the outer circumference of one end of the roll shaft 12, one end of the roll shaft 12 is inserted into the spline groove 115 at the corresponding end of the roll body 11, a flange 122 attached to the end of the roll body 11 is coaxially provided on the outer circumference of the roll shaft 12, and the flange 122 is fixedly connected to the corresponding end of the roll body 11 by a bolt.

In this embodiment, the roll body 11 and the roll shaft 12 are integrally and separately designed, so that the assembly of the internal parts of the roll body 11 is facilitated, and meanwhile, the roll shaft 12 needs to bear the weight of the roll body 11 and the downward pressure caused by the tensile force of the strip steel, so that the roll body 11 and the roll shafts 12 at two ends are connected by adopting keys, and are fixed by matching with semi-buried bolts on the side surfaces of the flanges 122 of the roll shafts 12.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (7)

1. A plate-shaped measuring roller for double measuring density, characterized in that: including roll core (1), roller shell (2) and sensor subassembly, roll core (1) include roll body (11) and roller (12), roll body (11) are cylindric hollow roll body, roller (12) coaxial assembly is in roll body (11) both ends, roller shell (2) coaxial assembly in roll body (11) are outside, roll body (11) surface is equipped with many stress measuring points, and many stress measuring points are in the axial and radial upper interval distribution of roll body (11), sensor subassembly assemble in the inside cavity of roll body (11), stress measuring point pass through respectively the power transmission piece of roll body (11) with sensor subassembly is connected.

2. A double measured density plate shape measuring roll according to claim 1, characterized in that: the utility model discloses a force sensor is characterized by comprising a roll body (11), a plurality of through grooves (111) are arranged on the surface of the roll body (11) along the axial direction of the roll body, each through groove (111) is provided with two groups, and each through groove (111) is used the axis of the roll body (11) is the central line and is 180 degrees distributed, and two adjacent through grooves (111) are used the axis of the roll body (11) is the central line and is 90 degrees distributed, the tank bottoms of each through groove (111) are all along the axial interval of the roll body (11) are provided with a plurality of through holes (112) corresponding one by one, the through holes (112) are all along the radial direction of the roll body (11) runs through the side wall of the roll body (11), two corresponding through holes (112) are respectively penetrated with a force column (113), a force sensor (3) is connected between one ends of the corresponding two force columns (113) which are close to each other, wedge bodies (114) are embedded and fixed in the through grooves (111), the wedge bodies (114) are propped against the roll sleeve (2), and the force sensor bodies (113) are connected with the force sensor (113) along the axial direction of the two through columns (113) respectively, and the force sensor (112) are not distributed along the axial direction of the through grooves (112).

3. A double measured density plate shape measuring roll according to claim 2, characterized in that: the cross section of the through groove (111) along the radial direction of the roller body (11) is trapezoid, the shorter bottom edge of the trapezoid falls on the surface of the roller body (11), the other bottom edge of the trapezoid is close to the central line of the roller body (11), and the cross section of the wedge body (114) is trapezoid matched with the through groove (111).

4. A double measured density plate shape measuring roll according to claim 2, characterized in that: the through holes (112) are conical holes, the conical tips of the through holes face the corresponding through grooves (111), and the force columns (113) are conical columns.

5. A double measured density plate shape measuring roll according to claim 4, wherein: and cylindrical back caps (31) are respectively fixed at one ends of the two corresponding force columns (113) which are close to each other, and the force sensor (3) is positioned between the two corresponding back caps (31).

6. A double measured density plate shape measuring roll according to claim 5, wherein: positioning columns (311) are respectively arranged at one ends, close to each other, of the corresponding two back caps (31), and positioning holes (32) which are in plug-in fit with the positioning columns (311) are respectively arranged at two ends of the force sensor (3).

7. A double measured density plate shape measuring roll according to any of claims 1 to 6, characterized in that: the novel roller is characterized in that a circle of spline grooves (115) are respectively formed in the cavity walls at two ends of the inner cavity of the roller body (11), a circle of spline (121) is arranged on the periphery of one end of the roller shaft (12), one end of the roller shaft (12) is inserted into the spline grooves (115) at the corresponding end of the roller body (11), a flange (122) attached to the end part of the roller body (11) is further coaxially arranged on the periphery of the roller shaft (12), and the flange (122) is fixedly connected with the corresponding end part of the roller body (11) through bolts.

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