CN210059344U - Axial adjusting device for roller - Google Patents

Abstract

The purpose of the utility model is to provide an axial adjustment device for the roll that is easy to realize online real-time adjustment, has reliable and accurate transmission, long service life and low noise, including a servo motor fixed on the rolling mill frame, one end of the telescopic rod is The output shaft of the servo motor is connected, and the rolling mill frame is also provided with a driving mechanism, and the driving mechanism drives the other end of the telescopic rod to cooperate or disengage with the worm set on the outer ring of the axial adjustment sleeve of the roll. The servo motor is directly fixed on the rolling mill frame. Due to the support of the rolling mill frame, the servo motor has little vibration during operation and stable transmission of the output shaft, and will not exert excess pressure on the meshing of the worm gear and the worm gear. Stable, small amount of wear, low noise, long service life.

Description

Axial adjustment device for rolls

technical field

The utility model relates to steel rolling equipment, in particular to a device for adjusting the axial position of a rolling mill roll.

Background technique

When the wire and bar are processed, it depends on the matching notches on the rolling mill rolls that cooperate with each other. If the notches are misaligned with each other or the positions of the notches are not completely aligned with each other, the rolled products will have cross-sectional shape and size deviations. And other quality problems, in serious cases will be rolled out of scrap. In view of this, it is necessary to adjust the axial direction of the pair of rollers that are matched with each other to ensure that the mutually matched notches formed on the rollers are exactly opposite to each other.

The applicant of the present utility model has previously applied for a patent entitled "An Axial Adjustment Device for Rollers" (Patent No.: CN102310086B). The side of the teeth on the outer ring of the axial adjustment sleeve is provided with an external thread and the inner part of the adjustment positioning ring. The inner thread set on the ring constitutes the screw-nut fit, the adjusting positioning ring is fixedly connected with the main bearing seat, the outer end of the worm extends to the outside of the adjusting positioning ring and is connected with the output shaft of the hydraulic motor or servo motor, and the controller outputs the control signal Drive hydraulic motor or servo motor to rotate. However, the hydraulic motor or servo motor is directly and always connected to the outer rod end of the worm, and the hydraulic motor or servo motor is supported by the worm. The hydraulic motor or servo motor will inevitably vibrate during operation, increasing the meshing of the worm gear and the worm. The wear and tear of the components affects the service life and the noise is large. In addition, the hydraulic motor or servo motor rotates due to the vibration during the rolling process and the vibration of the transmission shaft between the worm and the motor, resulting in the axial movement of the roll and the deformation of the rolling hole, which will seriously affect the quality of the workpiece to be rolled. .

Utility model content

The purpose of the utility model is to provide an axial adjustment device of the roll which is convenient to realize on-line real-time adjustment, reliable and accurate in transmission, long in service life and low in noise.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is as follows: an axial adjustment device for a roll, comprising a servo motor fixed on the rolling mill stand, one end of the telescopic rod is connected with the output shaft of the servo motor, and the rolling mill stand is connected to the output shaft of the servo motor. A driving mechanism is also provided, and the driving mechanism drives the other end of the telescopic rod to cooperate or disengage with the worm provided on the outer ring of the axial adjustment sleeve of the roller.

With the above solution, the servo motor is directly fixed on the rolling mill stand. Due to the support of the rolling mill stand, the servo motor has little vibration during operation, stable transmission of the output shaft, and will not exert excess pressure on the meshing of the worm gear and worm. , The worm gear meshes smoothly, the wear amount is small, the noise is low, and the service life is long.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the front view of the utility model;

FIG. 3 is a partially enlarged schematic view of FIG. 1 .

Detailed ways

For ease of explanation and understanding, several basic orientation and position concepts are first explained and defined. The upper and lower directions refer to the state in which the rolls are placed horizontally, and the following description only takes this state as an example. The rolling mill can be placed in a vertical roll for rolling.

Since the steel is surrounded by a safety forbidden area during the rolling process, the operator cannot realize the online adjustment during the rolling process. The solution provided by the utility model provides the possibility to realize the online axial adjustment, and significantly improves the control of the steel rolling equipment. and rolling accuracy, not only provides assembly guarantee for the reduction of scrap rate, but also can timely find out whether the product is out of tolerance and can quickly make corrections and adjustments, in addition to save a lot of time and reduce the labor intensity of workers, the specific plan is as follows:

As shown in FIG. 1-FIG. 3, an axial adjustment device of a roll includes a servo motor 20 fixed on the rolling mill stand 10, one end of the telescopic rod 30 is connected to the output shaft of the servo motor 20, and the rolling mill stand 10 is connected to the output shaft of the servo motor 20. A driving mechanism is also provided, and the driving mechanism drives the other end of the telescopic rod 30 to engage or disengage the worm 50 provided on the outer ring of the roller axial adjustment sleeve. The servo motor 20 is directly fixed on the rolling mill stand 10. Due to the support of the rolling mill stand 10, the servo motor 20 has little vibration during operation and stable transmission of the output shaft, and will not exert excess pressure on the meshing of the worm gear and worm. , The worm gear meshes smoothly, the wear amount is small, the noise is low, and the service life is long. At the same time, the effect of the servo motor 20 as a power mechanism is that the source of the driving signal can be provided by the controller. As long as the controller outputs the driving adjustment signal, the servo motor 20 will respond in a timely and accurate manner, especially the accuracy and reliability of its adjustment. Sex is guaranteed.

Considering that the servo motor 20 should be arranged at a position with better stability or a position to avoid other components, the servo motor 20 is preferably arranged on the upper part of the rolling mill stand 10, and one end of the telescopic rod 30 is connected with the first universal joint 31. The output shaft of the servo motor 20 is connected, and the other end is connected with a second universal joint 32. The second universal joint 32 is connected with the shaft sleeve 61 rotatably arranged on the lifting rod frame 60, and the shaft sleeve 61 is inserted into the rod end of the worm 50. Type key connection or socket type square shaft and square hole connection. Through the arrangement of the first universal joint 31 and the second universal joint 32, it is not necessary to consider the requirement that the output shaft of the servo motor 20 should be located directly above the worm 50 and the two should be collinear, and what position is suitable for installing the servo motor 20 Wherever the servo motor 20 is installed, the effective transmission of power can be ensured. In addition to the transmission mode of key connection, the transmission mode of square shaft, square hole or polygonal shaft can also be selected.

As shown in FIG. 2 , because the worm 50 only translates in the direction of the rod core, the corresponding shaft sleeve 61 only needs to translate. One end of the lifting rod frame 60 is connected to the rod of the piston rod 41 of the oil cylinder 40 The ends are connected, the rod core of the piston rod 41 is arranged in parallel with the rod core of the worm 50, and the shaft sleeve 61 is connected to the overhanging end of the lifting rod frame 60 when it rotates. The length of the telescopic rod 30 is driven by the oil cylinder 40 to change, so that the shaft sleeve 61 and the worm 50 are engaged or disengaged.

Further, in order to transmit torque smoothly, the upper section of the telescopic rod 30 is the spline sleeve 33 , the lower section is the spline shaft 34 , and the lower end of the spline shaft 34 is connected to the shaft sleeve 61 . Here, the upper part is the spline sleeve 33, and the lower end is the spline shaft 34, which can prevent sundries and dust from entering the joint part of the two and affect the transmission of torque.

In order to ensure the accuracy of the sleeve 61 and the worm 50 , the sleeve 61 is located directly above the worm 50 , and the shaft core of the sleeve 61 is collinear with the rod core of the worm 50 .

The worm 50 is arranged on the outer ring of the axial adjustment sleeve of the upper roller bearing seat 70, and the outer ring of the axial adjustment sleeve is also provided with teeth and the worm 50 to form a worm gear and worm mechanism, and the teeth on the outer ring of the axial adjustment sleeve are arranged on the side The external thread and the internal thread provided on the inner ring of the adjustment positioning ring fixed on the bearing seat 70 of the upper roll form a screw nut fit. The specific structure has been discussed in detail in the patent titled "An Axial Adjusting Device for Rollers" (Patent No.: CN102310086B) by the applicant of the present utility model, which will not be repeated here.

As an integral roll system, it is integrated into or out of the rolling mill stand, and the above-mentioned scheme of the power mechanism and the worm being matched or disengaged is used to facilitate the replacement of the roll system, and there will be no interference with other components. occur.

Claims (6)

1. An axial adjustment device of a roller, characterized in that: the rolling mill comprises a servo motor (20) fixed on a rolling mill stand (10), one end of a telescopic rod (30) is connected with an output shaft of the servo motor (20), a driving mechanism is further arranged on the rolling mill stand (10), and the other end of the telescopic rod (30) is driven by the driving mechanism to be matched with or separated from a worm (50) arranged on an outer ring of a roller axial adjusting sleeve.

2. Axial adjustment device of a roll according to claim 1, characterized in that: the servo motor (20) is arranged on the upper portion of the rolling mill frame (10), one end of the telescopic rod (30) is connected with an output shaft of the servo motor (20) through a first universal joint (31), the other end of the telescopic rod is connected with a second universal joint (32), the second universal joint (32) is connected with a shaft sleeve (61) which is rotatably arranged on the lifting rod frame (60), and the shaft sleeve (61) is connected with a rod end insert type key or an insert type square shaft and a square hole of the worm (50).

3. The axial adjustment device of a roll according to claim 2, characterized in that: one end of the lifting rod frame (60) is connected with the rod end of a piston rod (41) of the oil cylinder (40), the rod core of the piston rod (41) is arranged in parallel with the rod core of the worm (50), and the shaft sleeve (61) is connected with the overhanging end of the lifting rod frame (60) when rotating.

4. The axial adjustment device of a roll according to claim 1, 2 or 3, characterized in that: the upper section of the telescopic rod (30) is a spline sleeve (33), the lower section of the telescopic rod is a spline shaft rod (34), and the lower end of the spline shaft rod (34) is connected with a shaft sleeve (61).

5. The axial adjustment device of a roll according to claim 4, characterized in that: the shaft sleeve (61) is positioned right above the worm (50), and the shaft core of the shaft sleeve (61) is collinear with the rod core of the worm (50).

6. Axial adjustment device of a roll according to claim 1, characterized in that: the worm (50) is arranged on an axial adjusting sleeve outer ring of the upper roll bearing seat (70), teeth and the worm (50) are further arranged on the axial adjusting sleeve outer ring to form a worm gear mechanism, and external threads are arranged beside the teeth on the axial adjusting sleeve outer ring and form screw rod nut matching with internal threads arranged on an adjusting positioning ring inner ring fixed on the upper roll bearing seat (70).

Images