CN218532319U - Device for quickly calibrating and checking height of front-stage mandrel support carrier roller of continuous rolling mill - Google Patents

Abstract

The application discloses a device for quickly calibrating and checking the height of a front-stage mandrel support carrier roller of a continuous rolling mill, which relates to the technical field of steel pipe production and comprises a main body part and a plurality of calibration and checking parts which are arranged on the main body part in an independent driven up-and-down moving mode, wherein the calibration and checking parts are provided with calibration and checking arcs, and the diameter of each calibration and checking arc of each calibration and checking part is the same as that of a mandrel with a corresponding model; during calibration or verification, the calibration and verification piece corresponding to a certain core rod is driven to move downwards, so that the axis of the calibration and verification arc coincides with the center line of the standard position of the core rod, and the position of the carrier roller for the core rod is calibrated and verified. This application instrument is simple easily obtained, and the calibration time is few, and it is accurate to mark the high position, and the commonality is better, can effectively improve efficiency and the effect of demarcation work, and the check-up of plug supporting roller height is also more convenient simultaneously.

Description

Device for quickly calibrating and checking height of front-stage mandrel support carrier roller of continuous rolling mill

Technical Field

The application relates to the technical field of steel pipe production, in particular to a device for quickly calibrating the height of a mandrel support carrier roller on a front table of a continuous rolling mill.

Background

The mandrel is a key internal deformation tool of the continuous pipe rolling mill, and the mandrel and a roller of the continuous rolling mill act together in the rolling process to roll the hollow billet to the preset wall thickness.

In the production process of the continuous rolling mill, a group of core rods are recycled, and the rolled core rods are cooled and lubricated and then return to the front desk of the continuous rolling mill to wait for rolling again. Before rolling, the lubricated mandrel is moved to a mandrel supporting roller, is driven by a stop rack to penetrate into the hollow billet, and then enters a continuous rolling mill together with the hollow billet for rolling.

In the process of inserting the mandrel into the hollow billet, the central height of the mandrel is kept consistent with the height of the rolling central line of the continuous rolling mill, so that the wall thickness precision of the pierced billet after continuous rolling is ensured, the consumption of the mandrel is reduced, and the service life of the mandrel is prolonged. For the core rods with different diameters, in order to ensure that the height of the center of the core rod is consistent with that of the rolling center line, the height of the core rod supporting roller needs to be accurately adjusted according to the diameter change of the core rod.

In an actual production line, the height adjustment of the mandrel backing roll is usually driven by a hydraulic cylinder assembly, the hydraulic cylinder assembly is provided with a displacement sensor, an automatic control program outputs a displacement instruction, and the hydraulic cylinder assembly drives the mandrel backing roll to operate at a high preset height according to the received displacement instruction. Before the automatic control program outputs a displacement instruction, calibrating and fitting calculation needs to be carried out on the position of the hydraulic cylinder component of the mandrel supporting roller: randomly selecting a series of position points within the operation range of the hydraulic cylinder assembly, measuring the height of the mandrel supporting roller, converting the corresponding mandrel diameter value consistent with the height of the rolling central line, fitting a mathematical relation between the displacement value of the hydraulic cylinder assembly and the height of the mandrel supporting roller mandrel through data analysis, inputting the diameter value of the actual production mandrel into the obtained mathematical relation, and calculating the displacement value of the corresponding hydraulic cylinder assembly.

In the conventional core rod supporting roller calibration process, the height of the surface of the core rod supporting roller needs to be measured manually for multiple times, the height of a cylindrical area at the outer edge of a roller body is usually measured in actual operation, and then the central height of the core rod is converted through the diameter of the outer edge of the theoretical roller body. Because manual measurement is inconvenient, random deviation of measurement results cannot be avoided even if an auxiliary measuring tool is designed, and meanwhile, measurement deviation can be caused by factors such as machining precision of a roller body and equipment abrasion, and a plurality of factors are accumulated, so that the measurement deviation is further enlarged; the displacement data of the hydraulic cylinder assembly is calculated by using a mathematical relation fit by using a group of data with random deviation, and the displacement data is inevitably in and out of an actual value, so that the deviation between the central height of the mandrel and the height of a rolling central line is finally caused, and the product quality and the service life of the mandrel are influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the conventional core rod supporting roller calibration process, the height of the surface of the core rod supporting roller needs to be manually measured for multiple times, so that errors are easily generated, the height of the center of the core rod is deviated from the height of a rolling center line, and the product quality and the service life of the core rod are affected.

The application provides a high calibration check device that marks fast of tandem mill proscenium plug supporting roller adopts following technical scheme:

a device for quickly calibrating and checking the height of a mandrel support roller on the front table of a continuous rolling mill comprises a main body part and a plurality of calibration and checking parts which are arranged on the main body part in an independent driven up-and-down moving mode, wherein each calibration and checking part is provided with a calibration and checking arc, and the diameter of each calibration and checking arc of each calibration and checking part is the same as that of a mandrel of a corresponding model; during calibration or calibration, the calibration and calibration part corresponding to a certain core rod is driven to move downwards, so that the axis of the calibration and calibration arc is superposed with the center line of the standard position of the core rod, and the position of a carrier roller for the core rod is calibrated and calibrated; two ends of the main body part are provided with supporting plates, and the two supporting plates are respectively placed on two sides of the core rod position.

Optionally, the distance from the center of the calibration checking piece to the support plate is the same as the horizontal distance from the rolling center line to the support plate.

Optionally, the bottom side of the main body part is provided with a moving groove with the same number as the calibration verification pieces along the vertical direction, and the plurality of calibration verification pieces are slidably inserted into the moving groove; the main body part is internally provided with a plurality of groups of adjusting screws for replacing the calibration check part, the adjusting screws are rotatably inserted into the main body part along the vertical direction, and one end of the adjusting screws inserted into the main body part is matched with the calibration check part in a threaded manner.

Optionally, a plurality of calibration check parts are inserted into one end of the main body part, a movable plate is arranged on each end of the movable plate, limiting plates are arranged on two sides of the movable plate, the main body part is located on the side wall of the movable groove, limiting grooves are formed in the side wall of the movable groove in the vertical direction, and the limiting plates are inserted into the limiting grooves to enable the calibration check parts to just move to the outside of the main body part.

Optionally, the calibration checking piece is detachably connected with the moving plate.

Optionally, a connecting plate is arranged on the plane side of the calibration checking piece in the vertical direction, the connecting plate is inserted into the moving plate, and a clamping piece for fixing the connecting plate is arranged in the moving plate.

Optionally, an installation groove is formed in the bottom side of the moving plate along the vertical direction, the connecting plate is inserted into the installation groove, installation holes are formed in the groove walls on the two sides of the installation groove, and the clamping piece is arranged in the installation holes; the clamping piece is a spring bolt, the head of the bolt is arc-shaped, an arc-shaped clamping groove is formed in the side wall of the connecting plate, and the spring bolt is inserted into the clamping groove to fix the connecting plate in the mounting groove.

Optionally, the main part is located the top and is equipped with the access hole with the shifting chute intercommunication, be equipped with on the main part and be used for the apron with access hole confined, many adjusting screw rotates and sets up on the apron, the apron passes through the fix with screw on the main part.

In summary, the present application includes at least one of the following advantages:

1. during calibration, a corresponding main part is designed according to the diameter specification of the actually used core rod, the projection of a calibration part on a vertical plane is superposed with the projection of the cross section of the currently used corresponding core rod at the core rod position, and the contact state of the arc surface of the calibration part and the core rod supporting roller is calibrated, namely the contact state of the actually used core rod at the core rod position and the core rod supporting roller, so that the accurate height position of the core rod supporting roller in actual production can be directly determined, the tool is simple and easy to obtain, the calibration time is short, the calibration height position is accurate, and the calibration work efficiency and effect can be effectively improved;

2. during checking, the mandrel supporting roller is automatically operated to the mandrel position of the currently used mandrel, then the corresponding main part is vertically placed on the fixed rack guide rail, the main part is transversely moved to be positioned right above the cross section of the mandrel supporting roller, a clearance between the calibration checking part and the two sides of the V-shaped roller surface of the mandrel supporting roller is measured by a feeler gauge, whether the position of the mandrel supporting roller meets the production requirement is judged according to the clearance measuring result, and if the position of the mandrel supporting roller does not meet the production requirement, the mandrel supporting roller needs to be calibrated again;

3. when demarcating the plug of different diameters, can select to use the same calibration check member of demarcation through adjusting screw, it is more convenient to use, need not produce different calibration slide caliper rule according to the plug of equidimension not, and the commonality is better, and the calibration check member of demarcating simultaneously can be dismantled, and convenient regular changes calibration check member, can avoid demarcating that the check member is impaired to cause the error to measuring.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a front cross-sectional view of an embodiment of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is a bottom view of an embodiment of the present application.

Fig. 5 is a top view of an embodiment of the present application.

Fig. 6 is a usage state diagram of an embodiment of the present application.

Description of the reference numerals:

1. a main body member; 11. calibrating a calibration piece; 111. a connecting plate; 112. a card slot; 12. a moving groove; 121. a limiting groove; 13. moving the plate; 131. a limiting plate; 132. mounting grooves; 133. mounting holes; 14. a clamping and fixing piece; 15. A support plate; 16. a handle; 17. an access hole; 18. a cover plate; 2. adjusting the screw rod.

Detailed Description

The following embodiments of the present application are described by specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure of the present application. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the features in the following embodiments and examples may be combined with each other without conflict.

The drawings are for illustrative purposes only and are not intended to be limiting of the present application; to better explain the embodiments of the present application, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Embodiments of the present application are described in further detail below with reference to figures 1-6.

The embodiment of the application provides a high calibration device for a front-table mandrel support roller of a continuous rolling mill. Referring to fig. 1 and 2, the calibration device for rapidly calibrating the height of a front mandrel support roller of a continuous rolling mill comprises a main body part 1, wherein the main body part 1 comprises the main body part 1 and a plurality of calibration parts 11 corresponding to mandrels with different diameters, circular arc surfaces with diameters corresponding to the mandrels with different diameters are arranged on the bottom side of the calibration parts 11, the calibration parts 11 are semicircular plates in the embodiment, the plane sides of the calibration parts 11 are arranged on the lower side of the main body part, the circle centers of the calibration parts 11 are located on the same horizontal line, the calibration parts 11 in the embodiment are provided with three blocks, the three blocks of calibration parts 11 are sequentially arranged from large to small, the calibration parts 11 can move into the main body part 1, the circular arc surfaces of the calibration parts 11 are in contact with the surfaces of the mandrels, and the projection of the calibration parts 11 on a vertical plane coincides with the projection of the cross section of the actually used mandrels at the mandrel positions.

Referring to fig. 2 and 4, the bottom side of the main body 1 is provided with moving grooves 12 upward, the number of the moving grooves 12 is the same as the number of the calibration verification pieces 11, three calibration verification pieces 11 are inserted into the three moving grooves 12 on the planar side, and the calibration verification pieces 11 can be completely moved into the moving grooves 12. Be provided with adjusting screw 2 at the top of main part 1 along vertical direction, adjusting screw 2's low end is inserted and is located in main part 1, and rotate and set up on main part 1, adjusting screw 2 inserts the one end of locating main part 1 and inserts and locates and mark check-up member 11 in, and the plane side of marking check-up member 11 is fixed with the thread bush, adjusting screw 2 and thread bush screw-thread fit, can make through rotating adjusting screw 2 and mark 11 vertical movements of check-up member, can change corresponding check-up member 11 of maring according to the plug size of maring, and is more convenient to use, and the commonality is better. In order to facilitate the rotation of the adjusting screw 2, the top of the adjusting screw 2 is provided with a hexagon socket nut.

Referring to fig. 2, in order to avoid the situation that the calibration error is caused by inaccurate position of the calibration check member 11 when the calibration check member 11 is replaced, a moving plate 13 is arranged on the plane side of the calibration check member 11 along the vertical direction, the moving plate 13 is inserted into the moving groove 12, the adjusting screw 2 is inserted into the moving plate 13, and the thread bush is fixed on the moving plate 13. Limiting plates 231 are arranged on two sides of the moving plate 13 along the vertical direction, limiting grooves 121 are arranged on the groove walls of the main body part 1 on two sides of the moving groove 12 along the vertical direction, the limiting grooves 121 extend to positions close to the groove opening of the moving groove 12, and the limiting plates 231 are inserted into the limiting grooves 121. When the calibration part 11 is replaced and the calibration part 11 just moves to the outside of the main part 1, the limiting plate 131 abuts against the groove wall at the bottom of the limiting groove 121, the movement stroke of the calibration part 11 can be limited, and meanwhile, the position of the calibration part 11 can be positioned, so that the calibration is more accurate.

Referring to fig. 2 and 3, the calibration checking part 11 is prone to friction during long-term use, so that the calibration checking part 11 is worn, and an error is prone to occur in a calibration result, in order to reduce the calibrated error, it is necessary to continue to replace the calibration checking part 11 regularly, in order to facilitate replacement of the calibration checking part 11, an installation groove 131 is formed in the bottom of the moving plate 13 along the vertical direction, a connection plate 111 is arranged on the plane side of the calibration checking part 11 along the vertical direction, the connection plate 111 is inserted into the installation groove 131, installation holes 132 are formed in two side groove walls in the installation groove 131, a fastening part 14 for fixing the connection plate 111 is fixed in the installation hole 132, in this embodiment, the fastening part 14 is a spring bolt, a bolt head is arc-shaped and extends out of the installation hole 132, and arc-shaped clamping grooves 112 are formed in two side walls of the connection plate 111.

When the connecting plate 111 is inserted into the mounting groove 131, the connecting plate 111 extrudes the plug into the mounting hole 132, and the plug is inserted into the slot 112 of the connecting plate 111 under the action of the spring, so that the calibration checking piece 11 is fixed on the moving plate 13, and the calibration checking piece 11 can be conveniently replaced at regular intervals. Meanwhile, the position of the connecting plate 111 needs to be staggered with the adjusting screw 2, the same connecting plate 111 on the calibration check part 11 is symmetrically provided with two, the mounting grooves 131 are symmetrically provided with two, and the adjusting screw 2 is located between the two connecting plates 111, so that the mounting stress of the calibration check part 11 is more uniform, and the mounting is more stable.

Referring to fig. 2 and 5, the main body 1 is easy to be damaged in a long-term use process, in order to facilitate maintenance or replacement of parts, a 2-way access opening 17 is formed in the top of the main body 1, the access opening 17 is communicated with the moving groove 12 and the limiting groove 132, a cover plate 114 is further arranged on the main body 1, the access opening 17 can be sealed by the cover plate 114, and the cover plate 1145 is fixed on the main body 1 through screws. The adjusting screw 2 is rotatably arranged on the cover plate 114, the cover plate 114 is opened, the adjusting screw 2, the connecting plate 23 and the calibration checking part 11 can be taken out of the main body part 1 for maintenance or replacement, lubricating oil can be added into the moving groove 12 through the access hole 17, friction between the moving plate 13 and the groove wall of the moving groove 12 is reduced, the moving plate 13 can move more smoothly, and meanwhile abrasion between the moving plate 13 and the main body part 1 can also be reduced.

Referring to fig. 1 and 2, two identical support plates 15 are arranged at two ends of the main body part 1, two support plates 23 are respectively placed on two limiting rack guide rails of the device, and the distance from the center of the calibration checking part 11 to the support plates 15 is the same as the distance from the rolling center line to the limiting rack guide rail surfaces.

Meanwhile, in order to facilitate the handling of the main body 1, a handle 14 is further provided at a top middle position of the main body 1.

The implementation principle of the device for quickly calibrating the height of the mandrel support carrier roller on the front table of the continuous rolling mill is as follows: during calibration, according to the size of the core rod, selecting a corresponding calibration checking part 11, and rotating the adjusting screw rod 2 to enable the corresponding calibration checking part 11 to move to the lower side of the main body part 1; vertically placing the main body part 1 above the core rod position, checking and confirming that the support plates 15 on two sides of the main body part 1 are on the same horizontal line, and checking and confirming that the support plates 15 are in a vertical state by using a level meter; slowly moving the mandrel backing roll to ensure that both sides of the V-shaped roll surface of the mandrel backing roll just contact with the cambered surface of the calibration checking part 11; the automatic program records the reading of the hydraulic cylinder displacement sensor at the moment, and the core rod position calibration of the core rod supporting roller corresponding to the core rod with the specification is completed; replacing core rods with different diameters, and selecting a corresponding calibration checking part 11; during checking, the mandrel supporting roller automatically operates to the mandrel position of the currently used mandrel; vertically placing the main body part 1 above the mandrel position, and enabling the main body part 1 to be positioned right above the cross section of the mandrel supporting roller; and measuring the gaps between the calibration checking piece 11 and the two sides of the V-shaped roll surface of the mandrel supporting roll by using a feeler gauge, and judging whether the position of the mandrel supporting roll meets the production requirements or not according to the measurement result of the gaps.

Finally, although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the true spirit and scope of the present application, which is defined by the claims appended hereto.

Claims (8)

1. The utility model provides a calibration equipment is markd fast to tandem mill proscenium plug supporting roller height which characterized in that: the core rod calibration device comprises a main body part (1) and a plurality of calibration verification parts (11) which are arranged on the main body part (1) in an independent driven up-and-down moving mode, wherein the calibration verification parts are provided with calibration verification circular arcs, and the diameter of each calibration verification part calibration verification circular arc is the same as that of a core rod of a corresponding model; during calibration or calibration, the calibration and calibration part corresponding to a certain core rod is driven to move downwards, so that the axis of the calibration and calibration arc is superposed with the center line of the standard position of the core rod, and the position of a carrier roller for the core rod is calibrated and calibrated; two ends of the main body part (1) are provided with supporting plates (15), and the two supporting plates (15) are respectively placed on two sides of the mandrel position.

2. The device for rapidly calibrating and checking the height of the supporting carrier roller of the front mandrel of the continuous rolling mill according to claim 1, is characterized in that: the distance from the center of the calibration checking piece (11) to the support plate (15) is the same as the horizontal distance from the rolling center line to the support plate (15).

3. The device for rapidly calibrating and checking the height of the front mandrel support roller of the continuous rolling mill according to claim 1, characterized in that: the bottom side of the main body piece (1) is provided with moving grooves (12) with the same number as the calibration checking pieces (11) in the vertical direction, and the calibration checking pieces (11) can be slidably inserted into the moving grooves (12); the calibration and calibration device is characterized in that a plurality of groups of adjusting screws (2) used for replacing the calibration and calibration part (11) are arranged in the main body part (1), the adjusting screws (2) are rotatably inserted into the main body part (1) along the vertical direction, and one end of the adjusting screws (2) inserted into the main body part (1) is matched with the calibration and calibration part (11) in a threaded manner for use.

4. The device for rapidly calibrating and checking the height of the supporting carrier roller of the front mandrel of the continuous rolling mill according to claim 3, is characterized in that: it is a plurality of mark check part (11) are inserted and are located the one end in main part (1) and all be equipped with movable plate (13), the both sides of movable plate (13) all are equipped with limiting plate (131), main part (1) are located and are equipped with spacing groove (121) along vertical direction on the lateral wall of shifting chute (12), limiting plate (131) are inserted and are located in spacing groove (121) and make mark check part (11) just remove outside main part (1).

5. The device for rapidly calibrating and checking the height of the front-stage mandrel support roller of the continuous rolling mill according to claim 4, characterized in that: the calibration checking piece (11) is detachably connected with the moving plate (13).

6. The device for rapidly calibrating and checking the height of the supporting carrier roller of the front mandrel of the continuous rolling mill according to claim 5, is characterized in that: the plane side of the calibration checking piece (11) is provided with a connecting plate (111) in the vertical direction, the connecting plate (111) is inserted into the moving plate (13), and a clamping piece (14) used for fixing the connecting plate (111) is arranged in the moving plate (13).

7. The device for rapidly calibrating and checking the height of the front mandrel support roller of the continuous rolling mill according to claim 6, characterized in that: an installation groove (132) is formed in the bottom side of the moving plate (13) in the vertical direction, the connecting plate (111) is inserted into the installation groove (132), installation holes (133) are formed in the groove walls of the two sides of the installation groove (132), and the clamping piece (14) is arranged in the installation holes (133); the clamping piece (14) is a spring bolt, the head of the bolt is arc-shaped, an arc-shaped clamping groove (112) is formed in the side wall of the connecting plate (111), and the spring bolt is inserted into the clamping groove (112) to fix the connecting plate (111) in the mounting groove (132).

8. The device for rapidly calibrating and checking the height of the front-stage mandrel support roller of the continuous rolling mill according to claim 3, characterized in that: the main part (1) is located the top and is equipped with access hole (17) with removal groove (12) intercommunication, be equipped with on main part (1) and be used for with access hole (17) confined apron (18), many adjusting screw (2) rotate and set up on apron (18), apron (18) are fixed in on main part (1) through the screw.

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