CN112974549B - An intelligent guide and guard device for a large axle cross wedge rolling mill for rail transit - Google Patents

Abstract

The invention belongs to the technical field of plastic forming equipment of shaft parts, and particularly relates to an intelligent guide and guard device of a large-scale axle wedge cross rolling mill for rail transit, which comprises guide and guard supports, wherein a guide and guard base is arranged below the guide and guard supports, a guide and guard cross beam is arranged between the two guide and guard supports, a plurality of guide and guard hydraulic cylinders are arranged on the guide and guard cross beam, telescopic rods of the guide and guard hydraulic cylinders are connected with guide and guard sliding seats, guide and guard sliding grooves are arranged on the inner sides of the guide and guard supports, the guide and guard sliding seats are clamped in the guide and guard sliding grooves, two adjusting hydraulic cylinders are arranged on the front sides of the guide and guard sliding seats, and guide plate seats are hinged to the upper ends of the two adjusting hydraulic cylinders. The intelligent adjustment of the guide and guard device is realized through the control system, the guide and guard hydraulic cylinder, the adjusting hydraulic cylinder, the clamping hydraulic cylinder and the detection device, and the front and back openings, the height and the manual adjustment of the inclination angle of the guide plate of the guide and guard device can be quickly and intelligently adjusted according to the product specification.

Description

An intelligent guide and guard device for a large axle cross wedge rolling mill for rail transit

technical field

The invention belongs to the technical field of plastic forming equipment for shaft parts, and in particular relates to an intelligent guide and guard device for a large axle cross wedge rolling mill for rail transit.

Background technique

Large axles are core components in the fields of high-speed rail, rail transit, and large-scale construction machinery, and demand is increasing day by day. However, the traditional large-scale shaft parts are mainly prepared by fast forging machine and precision forging machine. The fast forging process requires human intervention, long production cycle, low product precision, high energy consumption and low efficiency, and the subsequent production process requires heavy lifting The amount of cutting is large and the metal flow line on the surface of the product is greatly damaged, which reduces the mechanical properties of the product; the precision forging machine is completely monopolized by foreign companies, although the forging speed can be more than double the speed of fast forging and cutting However, it still takes at least 4 minutes to prepare an axle, the subsequent processing loss and the mechanical properties of the product are still not improved, the equipment input and output are relatively low, and the quality stability is poor.

Cross wedge rolling is an efficient and clean plastic forming technology for shaft parts. Compared with the current production methods, the main advantages are: 1) The production efficiency is increased by 2 to 3 times; 2) The material saving rate is increased by 10 to 25%; 3 ) High product precision, reducing machining process; 4) No impact, low noise; 5) Production cost can be reduced by about 30%. Take the production of train RD2 axles as an example: the preparation time of a single axle can be reduced from 10 minutes to 1 minute, the production efficiency is increased by 3 to 5 times, the material saving is 50 to 100Kg, and the material saving rate is increased by 10 to 20%. Therefore, the use of cross wedge rolling technology to prepare large axles for rail transit not only improves the forming efficiency and accuracy of the axles, but also improves the life of the axles due to the retention of hot-worked metal streamlines.

At present, the world's largest cross wedge rolling mill can only roll large shafts with a diameter of 150mm and a length of less than 1200mm. For axle parts products, the structure and production capacity of the existing cross wedge rolling equipment cannot produce qualified products. Therefore, the use of cross wedge rolling mill to prepare large axles for rail transit is an international initiative, which puts forward higher requirements for its structure, and the choice is reasonable. The guide device is very important and is directly related to the quality of the product.

The guide device is the key structural component of the cross wedge rolling mill. During the rolling process, the two sets of guide devices at the front and rear of the rolling mill and the upper and lower rolls form a closed rolling space to ensure that the rolling stock is axially rotated in the upper and lower rolls. Rotating, the guide device participates in the deformation and ensures that the rolling stock does not roll out from the upper and lower circular rolls, which helps the rolling stock to be rolled and formed smoothly. The traditional guide devices are installed on the fixed beams of the left and right frames of the cross wedge rolling mill. When the product specification is adjusted, the opening and height adjustment between the front and rear guide devices are manually adjusted. The large-scale cross wedge rolling mill has a huge structure of the guide device due to its huge rolling force. If the traditional guide device structure is used, the adjustment process is obviously very difficult and difficult to achieve, and it cannot meet the needs of rapid adjustment during product production. At the same time precision Hard to guarantee.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides an intelligent guide and guard device for a large axle cross wedge rolling mill for rail transportation.

For achieving the above object, the present invention has adopted the following technical solutions:

An intelligent guide device for a large axle cross wedge rolling mill for rail transit, comprising guide brackets, the guide brackets have two, and a guide base for supporting the guide brackets is arranged below the guide brackets. A guide beam is arranged between the two guide brackets, and the guide beam is located on the rear side of the guide bracket, and a number of guide hydraulic cylinders are arranged on the guide beam. The rod is connected with the guide sliding seat, a guide sliding groove is arranged on the inner side of the guide supporting bracket, the guide sliding seat is clamped in the guide sliding groove, and two guide sliding seats are installed on the front side of the guide sliding seat. There are two adjustment hydraulic cylinders, and the two adjustment hydraulic cylinders are respectively located on both sides of the lower part of the guide sliding seat. The upper ends of the two adjustment hydraulic cylinders are jointly hinged with a guide plate seat to adjust the height of the guide plate seat. A plurality of U-shaped grooves are evenly arranged on the rear side of the guide guard sliding seat, and a plurality of clamping hydraulic cylinders corresponding to the U-shaped grooves are arranged on the guide sliding seat. For the clamping plate corresponding to the U-shaped groove, the clamping plate in the U-shaped groove is tightened by the clamping hydraulic cylinder, so as to realize the fixing of the guide plate seat. The guide plate is hinged in the card slot through the guide pin shaft, and the guide plate is fixedly connected with the guide plate by bolts. The guide hydraulic cylinder, the adjusting hydraulic cylinder and the clamping hydraulic cylinder are all connected with a displacement sensor and a pressure sensor. It is used to transmit the displacement data and pressure data of the guide hydraulic cylinder, the adjustment hydraulic cylinder and the clamping hydraulic cylinder to the control system, so as to facilitate the intelligent control and safety protection of the running state and running track of the guide device.

Further, a guide groove is provided in the middle of the lower surface of the guide sliding seat, and a guide rail corresponding to the guide groove is provided below the guide sliding seat, so as to limit and guide the guide sliding seat .

Still further, two guide guard eccentric shafts are respectively provided on the left and right sides of the guide guard sliding seat, and guide guard rollers are installed on the guide guard eccentric shaft for rolling contact with the guide guard chute, At the same time, the guide guard chute is supported to ensure the stability of the guide guard sliding seat. A compression end cover is installed on the guide guard eccentric shaft, and the compression end cover is fixed on the upper surface of the guide guard sliding seat by bolts. By tightening the bolts to clamp the end cover, the eccentric shaft of the guide guard is fixed.

Furthermore, sliding plates are provided on the upper and lower surfaces of the guide sliding seat in contact with the guide sliding groove and the position in the guide sliding groove in contact with the guide roller to reduce the wear of the guide sliding seat.

Further, a steering adjustment plate is fixedly connected to the upper end of the guide plate, the steering adjustment plate is fixedly connected with the guide strip through bolts, and two steering wheels are threadedly connected to the position corresponding to the steering adjustment plate on the guide sliding seat. Adjusting bolts, and the two steering adjustment bolts are located on both sides of the guide pin shaft respectively, and the ends of the steering adjustment bolts are in contact with the steering adjustment plate, so as to press the steering adjustment plate by screwing in the steering adjustment bolt, To achieve the purpose of adjusting the angle between the steering adjustment plate and the rolling center line.

Compared with the prior art, the present invention has the following advantages:

1. The present invention realizes the intelligent adjustment of the guide device through the control system, the guide hydraulic cylinder, the adjustment hydraulic cylinder, the clamping hydraulic cylinder and the detection device, and can quickly and intelligently adjust the front and rear openings and heights of the guide device according to the product specifications. Manual adjustment of the inclination angle of the guide plate;

2. The present invention can realize the rapid opening of the guide device in the front and rear opening directions, ensure that the rolled products are quickly transported out of the rolls, and meet the production rhythm requirements of the cross wedge rolling mill;

3. The present invention can realize the dynamic monitoring of the guide plate force during the product rolling process, ensure that the guide plate force surges and pop up quickly when the rolling piece is stuck, protect the rolling mill from damage, save manpower and improve efficiency compared with the existing manual adjustment.

Description of drawings

Fig. 1 is the rear view of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is the top view of the present invention;

Fig. 4 is the sectional view of A-A in Fig. 3 of the present invention;

Fig. 5 is the sectional view of the B-B section in Fig. 4 of the present invention;

6 is a schematic structural diagram of the guide eccentric shaft of the present invention;

Fig. 7 is the schematic diagram when the present invention is used;

In the figure, guide bracket-1, guide base-2, guide beam-3, guide hydraulic cylinder-4, guide sliding seat-5, guide chute-6, guide groove-7, guide rail- 8. Slide plate—9, guide eccentric shaft—10, pressing end cap—11, guide roller—12, adjusting hydraulic cylinder—13, guide plate seat—14, U-shaped groove—15, clamping hydraulic cylinder—16, Clamping plate—17, slot—18, guide pin—19, guide strip—20, steering adjustment plate—21, steering adjustment bolt—22, guide plate—23, upper roller—24, lower roller—25, Pieces - 26.

Detailed ways

In order to further illustrate the technical solutions of the present invention, the present invention will be further described below through examples.

As shown in FIGS. 1 to 7 , an intelligent guide device for a large axle cross wedge rolling mill for rail transit includes guide brackets 1 . There are two guide brackets 1 , which are arranged below the guide brackets 1 . There is a guide base 2 for supporting the guide bracket 1, and a guide beam 3 is arranged between the two guide brackets 1, and the guide beam 3 is located on the rear side of the guide bracket 1, and the guide beam 3 is located at the rear of the guide bracket 1. A number of guide hydraulic cylinders 4 are arranged on the beam 3, the telescopic rod of the guide hydraulic cylinder 4 is connected with the guide sliding seat 5, and a guide groove 7 is arranged in the middle of the lower surface of the guide sliding seat 5, and the guide groove 7 is provided in the middle of the guide sliding seat 5. A guide rail 8 corresponding to the guide groove 7 is arranged below the guide sliding seat 5, so as to limit and guide the guide sliding seat 5, and a guide sliding groove 6 is provided on the inner side of the guide support bracket 1. , the guide sliding seat 5 is clamped in the guide sliding groove 6, and two guide eccentric shafts 10 are respectively arranged on the left and right sides of the guide sliding seat 5, and on the guide eccentric shaft 10 A guide roller 12 is installed, which is used for rolling contact with the guide chute 6, and at the same time withstands the guide chute 6 to ensure the stability of the guide sliding seat 5, and is installed on the guide eccentric shaft 10. Compress the end cover 11, the compression end cover 11 is fixed on the upper surface of the guide sliding seat 5 by bolts, and the eccentric shaft 10 is fixed by tightening the bolts to clamp the compression end cover 10. The upper and lower surfaces of the guide sliding seat 5 are in contact with the guide sliding groove 6, and the parts in the guide sliding groove 6 that are in contact with the guide roller 12 are provided with a sliding plate 9 to reduce the wear on the guide sliding seat 5. Two adjustment hydraulic cylinders 13 are installed on the front side of the guide sliding seat 5 , and the two adjustment hydraulic cylinders 13 are respectively located on both sides of the lower part of the guide sliding seat 5 , and the upper ends of the two adjustment hydraulic cylinders 13 are common. A guide plate seat 14 is hinged to adjust the height of the guide plate seat 14 , a plurality of U-shaped grooves 15 are evenly arranged on the rear side of the guide plate seat 14 , and a plurality of U-shaped grooves are arranged on the guide sliding seat 5 . 15 corresponds to the clamping hydraulic cylinder 16, the end of the telescopic rod of the clamping hydraulic cylinder 16 is provided with a clamping plate 17 corresponding to the U-shaped groove 15, The clamping plate 17 is used to fix the guide plate base 14. The guide plate base 14 is provided with a slot 18 for clamping the guide plate 23. The guide plate 23 is hinged in the slot 18 through the guide pin shaft 19. The guide plate 23 is fixedly connected with a guide strip 20 by bolts, and a steering adjustment plate 21 is fixedly connected to the upper end of the guide plate 23. The steering adjustment plate 21 is fixedly connected with the guide strip 20 by bolts, and slides on the guide Two steering adjustment bolts 22 are threadedly connected to the position corresponding to the steering adjustment plate 21 on the seat 5, and the two steering adjustment bolts 22 are located on both sides of the guide pin shaft 19 respectively. The steering adjustment plate 21 is in contact to press the steering adjustment plate 21 by screwing in the steering adjustment bolt 22 to achieve the purpose of adjusting the angle between the steering adjustment plate 21 and the rolling center line. The guide hydraulic cylinder 4 adjusts the hydraulic pressure. Cylinder 13 and clamping hydraulic cylinder 16 are connected in place The displacement sensor and pressure sensor are used to transmit the displacement data and pressure data of the guide hydraulic cylinder 4, the adjustment hydraulic cylinder 13 and the clamping hydraulic cylinder 16 to the control system, so as to facilitate the intelligent control of the running state, running trajectory and safety protection.

Working principle: adjust the eccentric shaft 10 of the guide, so that the guide roller 12 can withstand the guide chute 6, the control system automatically controls the guide hydraulic cylinder 4 to drive the guide sliding seat 5 according to the size of the rolling piece, and adjusts the front and rear two guides. The opening between the guards is moved to an appropriate position, the clamping hydraulic cylinder 16 is controlled to extend, the guide plate seat 14 is released, the adjusting hydraulic cylinder 13 is controlled to drive the guide plate seat 14 to move to a suitable height, the clamping hydraulic cylinder 16 is controlled to retract, and the clamping The guide plate seat 14 realizes the fixation of the guide plate seat 14, so as to complete the adjustment of the guide device. During the rolling process, the control system controls the guide hydraulic cylinder 4, the adjustment hydraulic cylinder 13 and the clamping hydraulic cylinder 16 to keep the pressure all the time. And monitor its force state, when the external force exceeds the hydraulic cylinder's force capacity requirements, the hydraulic cylinder quickly bounces, so as to ensure the smoothness of rolling and the safety of the equipment.

While the main features and advantages of the present invention have been shown and described above, it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but can, without departing from the spirit or essential characteristics of the present invention, be The present invention may be implemented in other specific forms. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. An intelligent guide device for a large-scale axle cross wedge rolling mill for rail transit, characterized in that: it comprises a guide bracket (1), and the guide bracket (1) has two, and the guide bracket (1) is provided in the guide bracket (1). A guide base (2) for supporting the guide bracket (1) is arranged below the guide guard, and a guide beam (3) is arranged between the two guide brackets (1), and the guide beam (3) is located in the On the rear side of the guide bracket (1), a plurality of guide hydraulic cylinders (4) are arranged on the guide beam (3), and the telescopic rod of the guide hydraulic cylinder (4) is connected to the guide sliding seat (5). ) connection, a guide chute (6) is arranged on the inner side of the guide bracket (1), and the guide sliding seat (5) is clamped in the guide chute (6), and slides on the guide Two adjusting hydraulic cylinders (13) are installed on the front side of the seat (5), and the two adjusting hydraulic cylinders (13) are respectively located on both sides of the lower part of the guide sliding seat (5). The upper end of 13) is jointly hinged with a guide plate seat (14) to adjust the height of the guide plate seat (14). The guard sliding seat (5) is provided with a plurality of clamping hydraulic cylinders (16) corresponding to the U-shaped grooves (15), and the end of the telescopic rod of the clamping hydraulic cylinder (16) is provided with a U-shaped groove (16). 15) For the corresponding clamping plate (17), the clamping plate (17) in the U-shaped groove (15) is tightened by clamping the hydraulic cylinder (16) to realize the fixing of the guide plate seat (14). The seat (14) is provided with a clip slot (18) for clipping the guide plate (23), the guide plate (23) is hinged in the clip slot (18) through the guide pin shaft (19), and the guide plate (23) is hinged in the clip slot (18). ) is fixedly connected with a guide strip (20) by bolts, and the guide hydraulic cylinder (4), the adjustment hydraulic cylinder (13) and the clamping hydraulic cylinder (16) are all connected with a displacement sensor and a pressure sensor for connecting the guide The displacement data and pressure data of the guard hydraulic cylinder (4), the adjusting hydraulic cylinder (13) and the clamping hydraulic cylinder (16) are transmitted to the control system, so as to facilitate the intelligent control and safety protection of the running state and running track of the guarding device. 2. The intelligent guide device for a large-scale cross wedge rolling mill for rail transit according to claim 1, characterized in that: a guide groove (7) is provided in the middle of the lower surface of the guide sliding seat (5), A guide rail (8) corresponding to the guide groove (7) is provided below the guide sliding seat (5), so as to limit and guide the guide sliding seat (5). 3. The intelligent guide guard device for a large axle cross wedge rolling mill for rail transit according to claim 1, characterized in that: two guide guard eccentrics are respectively provided on the left and right sides of the guide guard sliding seat (5). A shaft (10), a guide roller (12) is installed on the guide eccentric shaft (10) for rolling contact with the guide chute (6) and at the same time resisting the guide chute (6) , to ensure the stability of the guide sliding seat (5), a pressing end cover (11) is installed on the guide eccentric shaft (10), and the pressing end cover (11) is fixed on the guide sliding by bolts. On the upper surface of the seat (5), the end cover (11) is clamped and pressed by tightening the bolts, so as to realize the fixation of the eccentric shaft (10) of the guide guard. 4. The intelligent guide device for a large axle cross wedge rolling mill for rail transit according to claim 1, characterized in that: the upper and lower surfaces of the guide sliding seat (5) are in contact with the guide chute (6). A sliding plate (9) is provided at the position and the position in the guide and guard chute (6) in contact with the guide and guard roller (12), so as to reduce the wear on the guide and guard sliding seat (5). 5 . The intelligent guide and guard device for a large axle cross wedge rolling mill for rail transit according to claim 1 , wherein a steering adjustment plate ( 21 ) is fixedly connected to the upper end of the guide plate ( 23 ), and the steering The adjustment plate (21) is fixedly connected with the guide strip (20) through bolts, and two steering adjustment bolts (22) are threadedly connected on the guide sliding seat (5) at positions corresponding to the steering adjustment plate (21), and Two steering adjustment bolts (22) are respectively located on both sides of the guide pin shaft (19), and the ends of the steering adjustment bolts (22) are in contact with the steering adjustment plate (21), so as to adjust the steering through precession The bolts (22) press the steering adjustment plate (21) to achieve the purpose of adjusting the angle between the steering adjustment plate (21) and the rolling center line.

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