CN113909342B - Construction device for protecting U-shaped structure of bridge foundation - Google Patents
Construction device for protecting U-shaped structure of bridge foundation Download PDFInfo
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- CN113909342B CN113909342B CN202111041629.7A CN202111041629A CN113909342B CN 113909342 B CN113909342 B CN 113909342B CN 202111041629 A CN202111041629 A CN 202111041629A CN 113909342 B CN113909342 B CN 113909342B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/002—Positioning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a construction device for a U-shaped structure for protecting a bridge foundation, which comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a base, the top of the bottom plate is provided with a forming unit, the outer side of the forming unit is provided with a stripping unit, the top of the base is provided with a limiting unit, the forming unit comprises a right-angle plate, a hydraulic rod, a fixing plate and a pressing block, the right-angle plate is fixedly connected to the top of the bottom plate, the hydraulic rod is installed at the bottom of the right-angle plate, the fixing plate is fixedly connected to the bottom end of the hydraulic rod, and the pressing block is fixedly connected with the bottom of the fixing plate. According to the method, the pressing angle of the metal piece is determined according to the bending degree and the shape reference value of the metal piece, and the speed of the pressing process is determined according to the strength parameter value of the metal piece, so that the pressing angle and the pressing force in the pressing process are accurately adjusted, the stability of the prepared U-shaped structure is improved, and the protection effect of the U-shaped structure in a bridge foundation is improved.
Description
Technical Field
The invention relates to the technical field of U-shaped structure construction and manufacturing, in particular to a construction device for a U-shaped structure for protecting a bridge foundation.
Background
The bridge foundation is the lowest part of the bridge structure directly contacting with the foundation, and is an important component of the bridge substructure, the stratum bearing the load transmitted from the bottom surface of the foundation is called the foundation, the foundation and the foundation will generate stress and deformation after being subjected to various loads, and in order to ensure the normal use and safety of the bridge, the foundation and the foundation must have enough strength and stability, and the deformation should be within an allowable range.
When the reinforcing bar installation to bridge pier shaft, need utilize U type structure to carry on spacingly to it to reach control interval's effect, current U type structure utilizes the punching machine to go on the metalwork suppression simultaneously in the construction manufacturing process, nevertheless does not have limit structure to the metalwork in the suppression in-process, needs the staff to support in advance simultaneously, needs the staff to hit the U type structure when getting the material simultaneously and hits, and whole construction manufacturing process is wasted time and energy, influences production efficiency.
In conclusion, a device capable of improving the product yield and the construction efficiency of the U-shaped structure by adjusting the pressing angle and the pressing speed of the metal part is still lacking in the prior art.
Disclosure of Invention
Therefore, the invention provides a construction device for a U-shaped structure for protecting a bridge foundation, which is used for overcoming the problem that a device capable of improving the product qualification rate and the construction efficiency of the U-shaped structure by adjusting the pressing angle and the pressing speed of a metal piece is still lacked in the prior art.
In order to accomplish the above objects, the present invention provides a construction apparatus of a U-shaped structure for protecting a bridge foundation, comprising,
a base plate;
the base is of a U-shaped structure, the base is arranged on the bottom plate, and laser range finders are arranged on two sides of the bottom plate and used for measuring the width of a metal piece placed on the bottom plate;
the conveying unit conveys the metal piece to the base through the conveying belt;
the forming unit is arranged at the top of the bottom plate and comprises a right-angle plate, the right-angle plate is fixedly connected to the top of the bottom plate, a hydraulic cylinder is arranged on the right-angle plate, a fixing plate is fixedly connected below a hydraulic rod of the hydraulic cylinder, a pressing block is fixedly arranged below the fixing plate and used for pressing the metal piece, and a flatness tester is further arranged below the fixing plate and used for measuring the bending degree and the thickness of the metal piece;
the material removing unit is arranged on the outer side of the forming unit and comprises a first spring arranged on one side of the hydraulic cylinder and a second spring arranged on the other side of the hydraulic cylinder, the first spring is sleeved on the middle part of the first sliding rod, the second spring is sleeved on the middle part of the second sliding rod, the bottom ends of the first sliding rod and the second sliding rod penetrate through and are connected to the inside of the fixed plate in a sliding mode, a first fixed disc is arranged on one side, away from the fixed plate, of the first spring, a second fixed disc is arranged on one side, away from the fixed plate, of the second spring, and a first oil cylinder and a second oil cylinder are arranged above the first fixed disc and the second fixed disc and used for pressing the first fixed disc and the second fixed disc;
the limiting unit is arranged above the base and comprises a vertical plate, the vertical plate is fixedly connected to the top of the base, a hinged plate is hinged to the outer side of the vertical plate, a third spring is embedded in one side, close to the hinged plate, of the vertical plate, and the third spring is connected with the hinged plate;
the rotating unit comprises a clamp, the clamp comprises a first clamp plate and a second clamp plate, the first clamp plate and the second clamp plate are used for clamping a metal piece, a driven gear is arranged on the second clamp plate and is meshed with a driving gear, and the driving gear is connected with a motor and is used for driving the driving gear to rotate;
the central control unit is respectively connected with the conveying unit, the forming unit, the stripping unit, the limiting unit and the rotating unit, and is used for receiving the measurement data of the laser range finders on the two sides of the base and the flatness tester of the forming unit, adjusting the working parameters of the rotating unit and the forming unit, and adjusting the working parameters of the stripping unit when the forming work is finished;
the central control unit receives the curvature and the thickness of the metal piece measured by the flatness tester in real time, judges whether the metal piece needs to be rotated according to the curvature of the metal piece measured in real time, determines a shape reference value of the metal piece according to the width and the thickness of the metal piece acquired in real time if the metal piece needs to be rotated, determines the rotation frequency of the rotating unit according to the shape reference value of the metal piece measured in real time, measures the curvature of the metal piece after each rotation and compares the curvatures of the metal piece, and controls the forming unit to perform forming operation on the metal piece when the metal piece is rotated to the position of the maximum measured curvature by the central control unit; if the metal piece does not need to be rotated, the central control unit controls the forming unit to perform forming operation on the metal piece;
when the metal piece is molded, the central control unit determines a strength parameter value of the metal piece according to a pre-acquired tensile strength measured value of the metal piece and a pre-acquired yield strength measured value of the metal piece, determines the extension speed of the hydraulic cylinder according to a pre-acquired measured strength parameter value of the metal piece, adjusts the determined extension speed of the hydraulic cylinder according to a shape reference value of the metal piece, determines the stroke of the hydraulic cylinder according to the thickness of the metal piece, and performs molding operation on the metal piece according to the determined stroke of the hydraulic cylinder and the adjusted extension speed of the hydraulic cylinder.
Further, after the conveying unit conveys the metal piece to a preset position on the base, the central control unit controls the flatness tester arranged on the forming unit to measure the curvature and the thickness of the metal piece, judges whether the metal piece needs to be rotated according to the curvature of the metal piece measured in real time, sets the curvature of the metal piece measured for the first time to be Cs1, sets the preset curvature C of the metal piece,
if Cs1 is not more than C, the central control unit judges that the rotating unit is required to rotate the metal piece;
if Cs1 is greater than C, the central control unit judges that the rotating unit is not needed to rotate the metal piece, and the central control unit controls the forming unit to perform forming operation on the metal piece.
Further, the central control unit controls the laser range finders arranged on two sides of the base to measure the width of the metal piece, determines the shape reference value of the metal piece according to the width and the thickness of the metal piece acquired in real time, sets the shape reference value of the metal piece to be A,
A＝W/W0+H/H0
where W represents the width of the metal piece, W0 represents the preset width, H represents the thickness of the metal piece, and H0 represents the preset thickness.
Further, shape reference value parameters a1, a2, A3, … and An are preset in the central control unit, wherein a1 represents a first preset shape reference value parameter, a2 represents a second preset shape reference value parameter, A3 represents a third preset shape reference value parameter, An represents An nth preset shape reference value parameter, a1 < a2 < A3 < An;
rotation frequency reference values X1, X2, X3, … and Xn are preset in the central control unit, wherein X1 represents a first preset rotation frequency reference value, X2 represents a second preset rotation frequency reference value, X3 represents a third preset rotation frequency reference value, Xn represents an nth preset rotation frequency reference value, and X1 > X2 > X3 > Xn.
Further, the central control unit determines the rotation times of the rotating unit according to the shape reference value A of the metal piece measured in real time,
if A is not more than A1, the central control unit determines that the rotation times of the rotating unit to the metal piece are X1;
if A is greater than A1 and less than or equal to A2, the central control unit determines that the rotation times of the rotating unit to the metal piece are X2;
if A is greater than A2 and less than or equal to A3, the central control unit determines that the rotation times of the rotating unit to the metal piece are X3;
if A (n-1) < A ≦ An, the central control unit determines that the rotation times of the rotating unit to the metal piece are Xn.
Further, after the central control unit controls the first clamping plate and the second clamping plate to fix the metal piece, the central control unit calculates the angle required to rotate each time according to the determined rotation frequency and controls the motor to rotate the metal piece according to the calculated rotation angle, and the flatness tester remeasures the curvature of the metal piece each time until the rotation frequency is finished;
the central control unit compares the curvature measured by the metal piece and rotates the metal piece to the position of the maximum measured curvature, and the central control unit controls the forming unit to perform forming operation on the metal piece.
Furthermore, when the metal part is molded, the central control unit determines the strength parameter value of the metal part according to the pre-obtained tensile strength measured value and the yield strength measured value of the metal part,
S＝Rm/Rm0+Q/Q0
wherein S represents the strength parameter value of the metal member, Rm represents the measured value of the tensile strength of the metal member, Rm0 represents the preset tensile strength value, Q represents the measured value of the yield strength of the metal member, and Q0 represents the preset yield strength value.
Further, the central control unit determines the extending speed of the hydraulic cylinder according to the measured strength parameter value of the metal piece, sets a first strength parameter value to be S1, sets a second strength parameter value to be S2, sets a first preset extending speed regulating coefficient alpha 1 and a second preset extending speed regulating coefficient alpha 2, sets the initial extending speed of the hydraulic cylinder to be V0, wherein alpha 2 is more than 0 and less than alpha 1,
if S is less than or equal to S1, the central control unit determines that the extension speed of the hydraulic cylinder is V, and V is V0;
if S1 is greater than S and less than or equal to S2, the central control unit determines that the extending speed of the hydraulic cylinder is V, and the V is alpha 1 × V0;
if S is greater than S2, the central control unit determines that the extension speed of the hydraulic cylinder is V, and the V is alpha 2 xV 0;
when the central control unit adjusts the extension speed of the hydraulic cylinder according to the α i, i is set to 1 or 2, the extension speed of the adjusted hydraulic cylinder is denoted as V, and V is α i × V0.
Further, adjustment coefficients β 1, β 2, β 3, …, and β n are preset in the central control unit, where β 1 represents a first preset adjustment coefficient, β 2 represents a second preset adjustment coefficient, β 3 represents a third preset adjustment coefficient, and β n represents an nth preset adjustment coefficient;
the central control unit adjusts the extending speed of the hydraulic cylinder according to the shape reference value A of the metal piece,
if A is less than or equal to A1, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 1 xV;
if A is greater than A1 and less than or equal to A2, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 2 xV;
if A is greater than A2 and less than or equal to A3, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 3 xV;
if A (n-1) < A ≦ An, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta n × V;
when the determined extension speed of the hydraulic cylinder is adjusted according to the beta i by the central control unit, i is set to be 1, 2, 3, … and n, n is set to be a positive number, the extension speed of the adjusted hydraulic cylinder is set to be Vt, and the Vt is set to be beta i multiplied by V, and the central control unit carries out forming operation on the metal piece according to the extension speed Vt of the adjusted hydraulic cylinder.
Further, the central control unit determines the stroke of the hydraulic cylinder according to the thickness of the metal piece, the initial stroke of the hydraulic cylinder is set to be Sy, the central control unit adjusts the stroke of the hydraulic cylinder to be Sj, and the Sj is Sy-H;
and after the forming unit finishes operating the metal piece, the central control unit controls the first oil cylinder and the second oil cylinder to work, and the stripping work is finished.
Compared with the prior art, the construction device of the U-shaped structure for protecting the bridge foundation has the advantages that the stability of the quality of the U-shaped structure is improved by controlling the forming and pressing process of the U-shaped structure in the construction process, firstly, whether the metal part needs to be rotated is determined by the bending degree of the metal part, if not, the forming operation is carried out, if so, the shape reference value of the metal part is determined according to the width and the thickness of the metal part, the rotating times are determined by the shape reference value, so that the bending degree of the metal part after each rotation is measured, the position of the maximum bending degree is taken as the optimal pressing angle of the metal part, the central control unit carries out forming and pressing on the metal part, secondly, the central control unit carries out forming and pressing on the metal part according to the actual tensile strength measurement value of the metal part and the actual yield strength measurement value of the metal part, the method comprises the steps of determining the strength parameter value of a metal piece, primarily determining the extension speed of a hydraulic cylinder, secondarily adjusting the extension speed of the hydraulic cylinder according to a shape reference value, determining the stroke of the hydraulic cylinder according to the thickness of the metal piece by a central control unit, and carrying out forming operation on the metal piece according to the determined stroke of the hydraulic cylinder and the adjusted extension speed of the hydraulic cylinder. Through the mode that layer upon layer adjustment is confirmed, carry out accurate adjustment to the suppression angle and the suppression dynamics in the pressing process to improve the steadiness of the U type structure that the device pressd out, thereby improve the guard action of U type structure in the bridge basis.
The degree of bending of the metal piece is measured through the flatness tester, whether the rotary unit needs to work or not is determined through the degree of bending of the metal piece, and the radian of the metal piece can be evaluated.
Particularly, the width and the thickness of the metal piece are measured, the shape reference value is set to realize parametric setting of the shape of the metal piece, so that whether the shape of the metal piece is deviated to a sheet shape or a steel bar shape is determined, the rotation times are determined by determining different degrees of different shapes, if the shape of the metal piece is deviated to a sheet shape, the rotation times are less, and if the shape of the metal piece is deviated to a steel bar shape, the rotation times are increased to adjust pressing angles of the metal piece under different angles, the qualified rate of pressed products of the metal piece is improved, the stability of the prepared products with the U-shaped structures is further improved, and the protection effect of the U-shaped structures in a bridge foundation is improved.
Particularly, the shape reference value parameter is set, the larger the shape reference value parameter is, the larger the difference between the width and the thickness of the metal part is, and the corresponding number of rotation times is small, so that the rotation efficiency is improved.
Particularly, the extension speed of the hydraulic cylinder is adjusted through the shape reference value of the metal part, if the shape reference value of the metal part is smaller, the metal part is in a deviated steel bar shape, the corresponding yield strength is also smaller, the extension speed of the hydraulic cylinder is adjusted in an accelerated manner, if the shape reference value of the metal part is larger, the metal part is in a deviated sheet shape, the corresponding yield strength is also larger, the extension speed of the hydraulic cylinder is adjusted in a reduced manner, so that the metal sheet is pressed better, the pressing efficiency is improved, the stability of a prepared product with a U-shaped structure is further improved, and the protection effect of the U-shaped structure in a bridge foundation is further improved.
Drawings
Fig. 1 is a schematic structural view of a construction apparatus for a U-shaped structure for protecting a bridge foundation according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the limiting unit.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a construction apparatus for a U-shaped structure for protecting a bridge foundation, including a base plate 1; the base 2 is of a U-shaped structure, the base 2 is arranged on the bottom plate 1, and laser range finders (not shown in the figure) are arranged on two sides of the bottom plate 1 and used for measuring the width of a metal piece placed on the bottom plate 1; a conveying unit which conveys the metal pieces onto the base 2 by a conveyor belt; the forming unit 3 is arranged at the top of the bottom plate 1, the forming unit 3 comprises a right-angle plate 301, the right-angle plate 301 is fixedly connected to the top of the bottom plate 1, a hydraulic cylinder is arranged on the right-angle plate 301, a fixing plate 303 is fixedly connected below a hydraulic rod 302 of the hydraulic cylinder, a pressing block 304 is fixedly arranged below the fixing plate 303 and used for pressing a metal piece, and a flatness tester 305 is further arranged below the fixing plate 303 and used for measuring the bending degree and the thickness of the metal piece; the material removing unit 4 is arranged on the outer side of the forming unit 3, the material removing unit 4 comprises a first spring 403 arranged on one side of the hydraulic cylinder and a second spring arranged on the other side of the hydraulic cylinder, the first spring 403 is sleeved on the middle part of the first sliding rod 401, the second spring is sleeved on the middle part of the second sliding rod, the bottom ends of the first sliding rod 401 and the second sliding rod penetrate through and are connected to the inside of the fixing plate 303 in a sliding manner, a first fixing plate 402 is arranged on one side, away from the fixing plate 303, of the first spring 403, a second fixing plate is arranged on one side, away from the fixing plate 303, of the second spring, a first oil cylinder 404 and a second oil cylinder are arranged above the first fixing plate 402 and the second fixing plate and used for pressing the first fixing plate 402 and the second fixing plate; the limiting unit 5 is arranged above the base 2, the limiting unit 5 comprises a vertical plate 501, the vertical plate 501 is fixedly connected to the top of the base 2, a hinged plate 502 is hinged to the outer side of the vertical plate 501, a third spring 503 is embedded in one side of the vertical plate 501 close to the hinged plate 502, and the third spring 503 is connected with the hinged plate 502; the rotating unit comprises a clamp, the clamp comprises a first clamp plate 701 and a second clamp plate 702, the first clamp plate 701 and the second clamp plate 702 are used for clamping a metal piece, a driven gear 704 is arranged on the second clamp plate 702, the driven gear 704 is meshed with a driving gear 705, and the driving gear 705 is connected with a motor 703 and used for driving the driving gear 705 to rotate. And the central control unit 6 is respectively connected with the conveying unit, the forming unit 3, the stripping unit 4, the limiting unit 5 and the rotating unit, is used for receiving the measurement data of the laser range finders on the two sides of the base 2 and the flatness tester 305 of the forming unit 3, adjusts the working parameters of the rotating unit and the forming unit 3, and adjusts the working parameters of the stripping unit 4 when the forming work is finished.
Specifically, in the embodiment of the present invention, the central control unit 6 receives the curvature and the thickness of the metal piece measured by the flatness tester 305 in real time, and determines whether a rotation operation needs to be performed on the metal piece according to the curvature of the metal piece measured in real time, if the metal piece needs to be rotated, the central control unit 6 determines a shape reference value of the metal piece according to the width and the thickness of the metal piece obtained in real time, and determines the rotation frequency of the rotation unit according to the shape reference value of the metal piece measured in real time, the central control unit 6 measures the curvature of the metal piece after each rotation and compares the curvatures of the metal piece, and when the central control unit 6 rotates the metal piece to the position of the maximum measured curvature, the central control unit 6 controls the forming unit 3 to perform a forming operation on the metal piece; if the metal part does not need to be rotated, the central control unit 6 controls the forming unit 3 to perform forming operation on the metal part. The invention is not limited to the specific method for measuring the bending degree and the width thickness of the metal piece, and can be implemented in detail.
Specifically, in the embodiment of the present invention, when a metal piece is formed, the central control unit 6 determines an intensity parameter value of the metal piece according to a measured tensile strength value and a measured yield strength value of the metal piece, which are obtained in advance, and determines an extension speed of the hydraulic cylinder according to the measured intensity parameter value of the metal piece, the central control unit 6 adjusts the extension speed of the hydraulic cylinder, which is determined according to a shape reference value of the metal piece, the central control unit 6 determines a stroke of the hydraulic cylinder according to a thickness of the metal piece, and forms the metal piece according to the determined stroke of the hydraulic cylinder and the adjusted extension speed of the hydraulic cylinder.
Specifically, in the embodiment of the present invention, the stability of the quality of the U-shaped structure is improved by controlling the forming and pressing process of the U-shaped structure during the construction process, firstly, determining whether the metal member needs to be rotated according to the bending degree of the metal member, if not, entering the forming operation, if necessary, determining the shape reference value of the metal member according to the width and the thickness of the metal member, determining the number of rotations according to the shape reference value, thereby measuring the bending degree of the metal member after each rotation, taking the position of the maximum bending degree as the optimal pressing angle of the metal member, forming and pressing the metal member by the central control unit 6, secondly, determining the strength parameter value of the metal member according to the actual tensile strength measurement value and the actual yield strength measurement value of the metal member, preliminarily determining the extension speed of the hydraulic cylinder, and secondly, adjusting the extension speed of the hydraulic cylinder according to the shape reference value, determining the stroke of the hydraulic cylinder according to the thickness of the metal piece by the central control unit 6, and performing molding operation on the metal piece according to the determined stroke of the hydraulic cylinder and the adjusted extension speed of the hydraulic cylinder. Through the mode that layer upon layer adjustment is confirmed, carry out accurate adjustment to the suppression angle and the suppression dynamics in the pressing process to improve the steadiness of the U type structure that the device pressd out, thereby improve the guard action of U type structure in the bridge basis.
Specifically, in the embodiment of the invention, the bottom plate 1 is arranged, so that the whole device is conveniently supported, the metal piece is conveniently pressed and formed by matching the forming unit 3 and the base 2, the metal piece is conveniently placed in advance by arranging the limiting unit 5, so that the manual support of workers is not needed in the processing process, and the discharge unit 4 is arranged, so that the discharge of the pressed and formed U-shaped structure is conveniently carried out. Utilize the setting of right-angle plate 301, be convenient for play the supporting role to hydraulic stem 302, after hydraulic stem 302 moves, fixed plate 303 will drive briquetting 304 downstream, cooperates with base 2 afterwards, suppresses the metalwork. The four vertical plates 501 are arranged, so that the four hinge plates 502 are supported, when a metal piece is placed on the base 2, the four hinge plates 502 are extruded, then the four hinge plates 502 are driven to collide with the metal piece under the influence of the elastic force of the four third springs 503, so that the stability of the metal piece is ensured, and after the metal piece is machined, the four hinge plates 502 can be driven to operate in situ under the influence of the elastic force of the four third springs 503, so that the next work can be carried out conveniently. When the U-shaped structure needs to be taken, the first oil cylinder 404 and the second oil cylinder can be controlled to press the fixed disc, then the two sliding rods can abut against the U-shaped structure on the outer side of the pressing block 304 and then fall off to finish taking, and then the elastic force influence of the first spring 403 and the second spring is utilized, so that the two sliding rods and the two fixed discs can be driven to move to the original positions, and the next taking work is facilitated.
Specifically, in the embodiment of the present invention, after the conveying unit conveys the metal part to the preset position on the base 2, the central control unit 6 controls the flatness tester 305 arranged on the forming unit 3 to measure the curvature and the thickness of the metal part, the central control unit 6 determines whether the metal part needs to be rotated according to the curvature of the metal part measured in real time, sets the curvature of the metal part measured for the first time to be Cs1, sets the preset curvature C of the metal part,
if Cs1 is not more than C, the central control unit 6 judges that the rotating unit is needed to rotate the metal piece;
if Cs1 > C, the central control unit 6 determines that the rotating unit is not needed to rotate the metal piece, and the central control unit 6 controls the forming unit 3 to perform the forming operation on the metal piece.
Specifically, the curvature of the metal part in the embodiment of the present invention means that when the metal part is on the base 2, the chord height of the downward bending is the curvature referred in this embodiment, if the curvature is a negative value, it indicates that the metal part is currently arched, and a rotation angle is required to adjust the metal part to be arched, so as to facilitate pressing, and if the current shape of the metal part is arched and the curvature exceeds a preset value, the metal part is directly pressed, so as to improve the pressing efficiency.
In the embodiment of the invention, the bending degree of the metal piece is measured by the flatness tester 305, the invention can determine whether the rotating unit needs to work or not through the curvature of the metal piece, the curvature of the metal piece can evaluate the radian of the metal piece, the invention realizes the adjustment of the pressing angle through the adjustment of the angle of the radian of the metal piece, and through the adjustment of the pressing angle of the metal piece, thereby improve the suppression effect of metalwork, the suppression angle of adjustment metalwork is the adjustment on the one hand and is simply easily operated moreover, and on the other hand is through the adjustment to the suppression angle of metalwork, makes the degree of buckling of metalwork change, follows the angle of suppression, improves the suppression product qualification rate of metalwork, further improves the steadiness of the product of the U type structure of preparing to improve the guard action of U type structure in the bridge basis.
Specifically, in the embodiment of the present invention, the central control unit controls the laser distance meters arranged on the two sides of the base to measure the width of the metal piece, the central control unit determines the shape reference value of the metal piece according to the width and the thickness of the metal piece obtained in real time, sets the shape reference value of the metal piece to be a,
A＝W/W0+H/H0
where W represents the width of the metal piece, W0 represents the preset width, H represents the thickness of the metal piece, and H0 represents the preset thickness.
Specifically, in the embodiment of the present invention, the value of W0 is 20cm, and the value of H0 is 20cm, the present invention does not limit a specific value, and the preset width and the preset thickness may be adjusted based on the structure of the metal part in specific implementation, where the preset thickness refers to a thickness to be pressed, and the preset width refers to a width of the metal part in this embodiment.
Specifically, in the embodiment of the present invention, shape reference value parameters a1, a2, A3, …, An are preset in the central control unit, where a1 represents a first preset shape reference value parameter, a2 represents a second preset shape reference value parameter, A3 represents a third preset shape reference value parameter, An represents An nth preset shape reference value parameter, and a1 < a2 < A3 < An.
Specifically, in the embodiment of the present invention, rotation number reference values X1, X2, X3, …, and Xn are preset in the central control unit, where X1 represents a first preset rotation number reference value, X2 represents a second preset rotation number reference value, X3 represents a third preset rotation number reference value, Xn represents an nth preset rotation number reference value, and X1 > X2 > X3 > Xn.
Specifically, in the embodiment of the invention, the central control unit determines the rotation times of the rotating unit according to the shape reference value a of the metal piece measured in real time,
if A is not more than A1, the central control unit determines that the rotation times of the rotating unit to the metal piece is X1;
if A is greater than A1 and less than or equal to A2, the central control unit determines that the rotation times of the rotating unit to the metal piece are X2;
if A is greater than A2 and less than or equal to A3, the central control unit determines that the rotation times of the rotating unit to the metal piece are X3;
and if A (n-1) < A is less than or equal to An, the central control unit determines that the rotation times of the rotating unit to the metal piece are Xn.
Specifically, in the embodiment of the invention, the width and the thickness of the metal part are measured, the shape reference value is set to realize the parameterization setting of the shape of the metal part, so that whether the shape of the metal part is deflected to a sheet shape or a steel bar shape is determined, the rotation times are determined by determining different degrees of different shapes, if the shape of the metal part is deflected to a sheet shape, the rotation times are less, and if the shape of the metal part is deflected to a steel bar shape, the rotation times are increased, so that the pressing angles of the metal part at different angles are adjusted, the qualified rate of pressed products of the metal part is improved, the stability of the prepared products with the U-shaped structures is further improved, and the protection effect of the U-shaped structures in a bridge foundation is improved.
Specifically, in the embodiment of the invention, after the central control unit controls the first clamping plate and the second clamping plate to fix the metal piece, the central control unit calculates the angle required to rotate each time according to the determined rotation times, and controls the motor to rotate the metal piece according to the calculated rotation angle, and the flatness tester remeasures the curvature of the metal piece each time the metal piece rotates, until the rotation times are completed.
Specifically, in the embodiment of the present invention, the central control unit compares the curvature measured by the metal part, and rotates the metal part to a position where the measured curvature is maximum, and the central control unit controls the forming unit to perform a forming operation on the metal part.
Specifically, in the embodiment of the present invention, when the metal part is formed, the central control unit determines the strength parameter value of the metal part according to the actually measured tensile strength value and the actually measured yield strength value of the metal part which are obtained in advance,
S＝Rm/Rm0+Q/Q0
wherein S represents the strength parameter value of the metal member, Rm represents the measured value of the tensile strength of the metal member, Rm0 represents the preset tensile strength value, Q represents the measured value of the yield strength of the metal member, and Q0 represents the preset yield strength value.
Specifically, in the embodiment of the present invention, the value of Rm0 is 900MPa, and the value of Q0 is 800MPa, and the present invention does not limit the specific preset tensile strength value and the specific preset yield strength value, which is subject to the specific implementation.
Specifically, in the embodiment of the present invention, the central control unit determines the extension speed of the hydraulic cylinder according to the measured strength parameter value of the metal part, sets the first strength parameter value as S1, sets the second strength parameter value as S2, sets a first preset extension speed adjustment coefficient α 1 and a second preset extension speed adjustment coefficient α 2, sets the initial extension speed of the hydraulic cylinder as V0, where 0 < α 2 < α 1 < 1,
if S is less than or equal to S1, the central control unit determines that the extension speed of the hydraulic cylinder is V, and V is V0;
if S1 is larger than S2, the central control unit determines that the extension speed of the hydraulic cylinder is V, and the V is alpha 1 multiplied by V0;
if S is greater than S2, the central control unit determines that the extension speed of the hydraulic cylinder is V, and the V is alpha 2 xV 0;
when the central control unit adjusts the extension speed of the hydraulic cylinder according to the α i, i is set to 1 or 2, the extension speed of the adjusted hydraulic cylinder is denoted as V, and V is α i × V0.
Specifically, in the embodiment of the present invention, adjustment coefficients β 1, β 2, β 3, …, and β n are preset in the central control unit, where β 1 represents a first preset adjustment coefficient, β 2 represents a second preset adjustment coefficient, β 3 represents a third preset adjustment coefficient, and β n represents an nth preset adjustment coefficient;
the central control unit adjusts the extending speed of the hydraulic cylinder according to the shape reference value A of the metal piece,
if A is less than or equal to A1, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 1 xV;
if A is greater than A1 and less than or equal to A2, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 2 xV;
if A is greater than A2 and less than or equal to A3, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 3 xV;
if A (n-1) < A ≦ An, the central control unit adjusts the extension speed of the hydraulic cylinder to Vt, which is β n × V.
Specifically, in the embodiment of the present invention, when the central control unit adjusts the determined extension speed of the hydraulic cylinder by β i, i is set to 1, 2, 3, …, n is set to a positive number, the adjusted extension speed of the hydraulic cylinder is set to Vt, and Vt is set to β i × V, and the central control unit performs the forming operation on the metal material according to the adjusted extension speed Vt of the hydraulic cylinder.
Specifically, in the embodiment of the invention, the shape reference value parameter is set, and the larger the shape reference value parameter is, the larger the difference between the width and the thickness of the metal piece is, the corresponding smaller the number of rotations is, in order to improve the rotating efficiency, the invention calculates the yield strength and the tensile strength of the metal piece by setting the strength parameter value of the metal piece, and the extension speed of the hydraulic cylinder is determined according to different yield strength values, if the yield strength value is smaller, the faster the extension speed of the hydraulic cylinder can be set to improve the pressing efficiency and effect, and if the yield strength value is larger, the extension speed of the hydraulic cylinder can be set relatively slow, so that the metal piece has a good pressing effect, the qualified rate of pressed products of the metal piece is improved, the stability of the manufactured products with the U-shaped structures is further improved, and the protection effect of the U-shaped structures in a bridge foundation is further improved.
Specifically, in the embodiment of the invention, the extending speed of the hydraulic cylinder is adjusted through the shape reference value of the metal piece, if the shape reference value of the metal piece is smaller, the metal piece is in a shape of a steel bar, the corresponding yield strength is also smaller, the extending speed of the hydraulic cylinder is adjusted in an accelerating manner, if the shape reference value of the metal piece is larger, the metal piece is in a shape of a sheet, the corresponding yield strength is also larger, the extending speed of the hydraulic cylinder is adjusted in a slowing manner, so that the metal piece is pressed better, the pressing efficiency is improved, the stability of the prepared product with the U-shaped structure is further improved, and the protection effect of the U-shaped structure in a bridge foundation is further improved.
Specifically, in the embodiment of the present invention, the central control unit determines the stroke of the hydraulic cylinder according to the thickness of the metal fitting, sets the initial stroke of the hydraulic cylinder to be Sy, and adjusts the stroke of the hydraulic cylinder to be Sj, where Sj is Sy-H.
Specifically, in the embodiment of the present invention, after the forming unit completes the operation on the metal part, the central control unit controls the first oil cylinder and the second oil cylinder to work, so as to complete the stripping work, and subsequently, the feeding device may be set to transmit the pressed U-shaped structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A construction device of a U-shaped structure for protecting a bridge foundation is characterized by comprising,
a base plate;
the base is of a U-shaped structure, the base is arranged on the bottom plate, and laser range finders are arranged on two sides of the bottom plate and used for measuring the width of a metal piece placed on the bottom plate;
the conveying unit conveys the metal piece to the base through the conveyor belt;
the forming unit is arranged at the top of the bottom plate and comprises a right-angle plate, the right-angle plate is fixedly connected to the top of the bottom plate, a hydraulic cylinder is arranged on the right-angle plate, a fixing plate is fixedly connected below a hydraulic rod of the hydraulic cylinder, a pressing block is fixedly arranged below the fixing plate and used for pressing a metal piece, and a flatness tester is further arranged below the fixing plate and used for measuring the bending degree and the thickness of the metal piece;
the material removing unit is arranged on the outer side of the forming unit and comprises a first spring arranged on one side of the hydraulic cylinder and a second spring arranged on the other side of the hydraulic cylinder, the first spring is sleeved on the middle part of the first sliding rod, the second spring is sleeved on the middle part of the second sliding rod, the bottom ends of the first sliding rod and the second sliding rod penetrate through and are connected to the inside of the fixed plate in a sliding mode, a first fixed disc is arranged on one side, away from the fixed plate, of the first spring, a second fixed disc is arranged on one side, away from the fixed plate, of the second spring, and a first oil cylinder and a second oil cylinder are arranged above the first fixed disc and the second fixed disc and used for pressing the first fixed disc and the second fixed disc;
the limiting unit is arranged above the base and comprises a vertical plate, the vertical plate is fixedly connected to the top of the base, a hinged plate is hinged to the outer side of the vertical plate, a third spring is embedded into one side, close to the hinged plate, of the vertical plate, and the third spring is connected with the hinged plate;
the rotating unit comprises a clamp, the clamp comprises a first clamp plate and a second clamp plate, the first clamp plate and the second clamp plate are used for clamping a metal piece, a driven gear is arranged on the second clamp plate and is meshed with a driving gear, and the driving gear is connected with a motor and is used for driving the driving gear to rotate;
the central control unit is respectively connected with the conveying unit, the forming unit, the stripping unit, the limiting unit and the rotating unit, and is used for receiving the measurement data of the laser range finders on the two sides of the base and the flatness tester of the forming unit, adjusting the working parameters of the rotating unit and the forming unit, and adjusting the working parameters of the stripping unit when the forming work is finished;
the central control unit receives the curvature and the thickness of the metal piece measured by the flatness tester in real time, judges whether the metal piece needs to be rotated according to the curvature of the metal piece measured in real time, determines a shape reference value of the metal piece according to the width and the thickness of the metal piece acquired in real time if the metal piece needs to be rotated, determines the rotation frequency of the rotating unit according to the shape reference value of the metal piece measured in real time, measures the curvature of the metal piece after each rotation and compares the curvatures of the metal piece, and controls the forming unit to perform forming operation on the metal piece when the metal piece is rotated to the position of the maximum measured curvature by the central control unit; if the metal piece does not need to be rotated, the central control unit controls the forming unit to perform forming operation on the metal piece;
when the metal piece is molded, the central control unit determines the strength parameter value of the metal piece according to the actually measured tensile strength value and the actually measured yield strength value of the metal piece which are obtained in advance, determines the extension speed of the hydraulic cylinder according to the actually measured strength parameter value of the metal piece which is obtained in advance, adjusts the extension speed of the hydraulic cylinder which is determined according to the shape reference value of the metal piece, determines the stroke of the hydraulic cylinder according to the thickness of the metal piece, and performs molding operation on the metal piece according to the stroke of the hydraulic cylinder and the extension speed of the hydraulic cylinder which is adjusted;
after the conveying unit conveys the metal piece to a preset position on the base, the central control unit controls a flatness tester arranged on the forming unit to measure the curvature and the thickness of the metal piece, the central control unit judges whether the metal piece needs to be rotated or not according to the curvature of the metal piece measured in real time, the curvature of the metal piece measured for the first time is set to be Cs1, the preset curvature C of the metal piece is set,
if Cs1 is not more than C, the central control unit judges that the rotating unit is needed to rotate the metal piece;
if Cs1 is larger than C, the central control unit judges that the rotating unit is not needed to rotate the metal piece, and the central control unit controls the forming unit to perform forming operation on the metal piece;
the central control unit controls the laser range finders arranged on the two sides of the base to measure the width of the metal piece, determines the shape reference value of the metal piece according to the width and the thickness of the metal piece acquired in real time, sets the shape reference value of the metal piece to be A,
A＝W/W0+H/H0
wherein W represents the width of the metal piece, W0 represents the preset width, H represents the thickness of the metal piece, and H0 represents the preset thickness;
shape reference value parameters A1, A2, A3, … and An are preset in the central control unit, wherein A1 represents a first preset shape reference value parameter, A2 represents a second preset shape reference value parameter, A3 represents a third preset shape reference value parameter, and An represents An nth preset shape reference value parameter, wherein n is a positive integer, A1 is more than A2 is more than A3 is more than An;
rotation frequency reference values X1, X2, X3, … and Xn are preset in the central control unit, wherein X1 represents a first preset rotation frequency reference value, X2 represents a second preset rotation frequency reference value, X3 represents a third preset rotation frequency reference value, Xn represents an nth preset rotation frequency reference value, and X1 > X2 > X3 > Xn;
the central control unit determines the rotation times of the rotating unit according to the shape reference value A of the metal piece measured in real time,
if A is not more than A1, the central control unit determines that the rotation times of the rotating unit to the metal piece is X1;
if A is greater than A1 and less than or equal to A2, the central control unit determines that the rotation times of the rotating unit to the metal piece are X2;
if A is greater than A2 and less than or equal to A3, the central control unit determines that the rotation times of the rotating unit to the metal piece are X3;
if A (n-1) < A is less than or equal to An, the central control unit determines that the rotation times of the rotating unit to the metal piece are Xn;
after the central control unit controls the first clamping plate and the second clamping plate to fix the metal piece, the central control unit calculates the angle required to rotate each time according to the determined rotation frequency, controls the motor to rotate the metal piece according to the calculated rotation angle, and remeasures the curvature of the metal piece by the flatness tester every time the metal piece rotates once until the rotation frequency is completed;
the central control unit compares the curvature measured by the metal piece and rotates the metal piece to the position of the maximum measured curvature, and the central control unit controls the forming unit to perform forming operation on the metal piece.
2. The apparatus for constructing a U-shaped structure for protecting a bridge foundation according to claim 1, wherein the central control unit determines the strength parameter value of the metal member based on the measured values of the tensile strength and the yield strength of the metal member, which are obtained in advance, when the metal member is subjected to the forming operation,
S＝Rm/Rm0+Q/Q0
wherein, S represents the strength parameter value of the metal member, Rm represents the measured tensile strength value of the metal member, Rm0 represents the preset tensile strength value, Q represents the measured yield strength value of the metal member, and Q0 represents the preset yield strength value.
3. The construction equipment for protecting the U-shaped structure of the bridge foundation according to claim 2, wherein the central control unit determines the extension speed of the hydraulic cylinder according to the measured strength parameter values of the metal members, sets a first strength parameter value to be S1, sets a second strength parameter value to be S2, sets a first preset extension speed adjustment coefficient α 1 and a second preset extension adjustment coefficient α 2, sets the initial extension speed of the hydraulic cylinder to be V0, wherein 0 < α 2 < α 1 < 1,
if S is less than or equal to S1, the central control unit determines that the extension speed of the hydraulic cylinder is V, and V is V0;
if S1 is greater than S and less than or equal to S2, the central control unit determines that the extending speed of the hydraulic cylinder is V, and the V is alpha 1 × V0;
if S is greater than S2, the central control unit determines that the extension speed of the hydraulic cylinder is V, and the V is alpha 2 xV 0;
when the central control unit adjusts the extension speed of the hydraulic cylinder according to the α i, i is set to be 1 and 2, the extension speed of the adjusted hydraulic cylinder is set to be V, and V is set to be α i × V0.
4. The construction device for protecting the U-shaped structure of the bridge foundation according to claim 3, wherein adjustment coefficients β 1, β 2, β 3, …, β n are preset in the central control unit, wherein β 1 represents a first preset adjustment coefficient, β 2 represents a second preset adjustment coefficient, β 3 represents a third preset adjustment coefficient, and β n represents an nth preset adjustment coefficient;
the central control unit adjusts the extending speed of the hydraulic cylinder according to the shape reference value A of the metal piece,
if A is less than or equal to A1, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 1 xV;
if A is greater than A1 and less than or equal to A2, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 2 xV;
if A is greater than A2 and less than or equal to A3, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta 3 xV;
if A (n-1) < A ≦ An, the central control unit adjusts the extension speed of the hydraulic cylinder to be Vt, and the Vt is beta n × V;
when the determined extension speed of the hydraulic cylinder is adjusted according to the beta i by the central control unit, i is set to be 1, 2, 3, … and n, n is set to be a positive number, the extension speed of the adjusted hydraulic cylinder is set to be Vt, and the Vt is set to be beta i multiplied by V, and the central control unit carries out forming operation on the metal piece according to the extension speed Vt of the adjusted hydraulic cylinder.
5. The construction device for protecting the U-shaped structure of the bridge foundation according to claim 4, wherein the central control unit determines the stroke of the hydraulic cylinder according to the thickness of the metal piece, sets the initial stroke of the hydraulic cylinder to be Sy, and adjusts the stroke of the hydraulic cylinder to be Sj, which is Sy-H;
and after the forming unit finishes operating the metal piece, the central control unit controls the first oil cylinder and the second oil cylinder to work, and the stripping work is finished.
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| CN202111041629.7A CN113909342B (en) | 2021-09-07 | 2021-09-07 | Construction device for protecting U-shaped structure of bridge foundation |
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| US6915244B2 (en) * | 2000-01-31 | 2005-07-05 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Method for predicting an amount of dimensional accuracy defect at the time of press-forming metal sheet |
| FR2847835B1 (en) * | 2002-11-29 | 2005-09-09 | Rbh | DEVICE FOR THE AUTOMATIC CORRECTION OF FOLDING PARAMETERS IN THE SHEET ON A PRESS-BENDER |
| CN108772445A (en) * | 2018-07-18 | 2018-11-09 | 长兴新亚环保机械科技有限公司 | A kind of panel beating aluminum strip bending device |
| CN209306430U (en) * | 2018-11-28 | 2019-08-27 | 江苏豪峰源木业有限公司 | A kind of sheet fabrication turnover device |
| CN210547569U (en) * | 2019-09-17 | 2020-05-19 | 苏州美德乐思精密机械有限公司 | Full-automatic bending forming device |
| CN111992597B (en) * | 2020-08-07 | 2022-09-09 | 秦素容 | Negative angle bending device for metal forming and implementation method thereof |
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