CN217858025U - Universal spindle balance bracket of rolling mill - Google Patents
Universal spindle balance bracket of rolling mill Download PDFInfo
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- CN217858025U CN217858025U CN202221145085.9U CN202221145085U CN217858025U CN 217858025 U CN217858025 U CN 217858025U CN 202221145085 U CN202221145085 U CN 202221145085U CN 217858025 U CN217858025 U CN 217858025U
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- connecting shaft
- base
- balance
- upper connecting
- rolling mill
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Abstract
A universal spindle balance bracket of a rolling mill relates to the technical field of steel rolling equipment in the metallurgical industry. The utility model provides a current rolling mill spiale bracket at roll change state lower shaft position appearance adjustment difficulty, roll change inefficiency problem. The utility model provides a universal spindle balance bracket of a rolling mill, which comprises a base, an upper spindle balancing device, a lower spindle balancing device and a roll changing auxiliary bracket; wherein the upper connecting shaft balancing device and the lower connecting shaft balancing device are arranged on the base, and the roller changing auxiliary support is vertically arranged on the base. The utility model discloses realize the accurate balance of universal spindle dead weight under the rolling mill work position, reduce universal spindle self by a wide margin and rotate the extra impact that produces the roll, set up the roll change auxiliary stand alone, effectively improved rolling mill roll change efficiency.
Description
Technical Field
The utility model relates to a metallurgical industry steel rolling equipment technical field, concretely relates to rolling mill universal spindle balancing cradle.
Background
At present, the cross universal spindle is increasingly applied to the main transmission of a rolling mill, and has the advantages of high transmission efficiency, large transmission torque, stable transmission, large allowable inclination angle and the like. However, the connecting shaft has a long length and a large weight, so that certain impact can be caused to the roller in the rotating process, and the product quality is influenced. Therefore, for the universal spindle of the rolling mill, a spindle bracket needs to be designed in a matching way to provide effective support for the universal spindle.
At present, a connecting shaft bracket of a rolling mill in a steel plant mostly adopts a lever type self-weight balancing bracket or a pulley type self-weight balancing bracket. The self-weight balance mode is that the self-weight of the upper and lower connecting shafts is realized through a self-balancing mechanism and is used as the internal force of the connecting shaft bracket system to carry out mutual balance. This approach can cause the entire gimbal to fail in the event of a stabilizer bar failure, and it is difficult to adapt it to applications where the spigots need to be adjusted individually. When the roll changing operation is carried out on the rolling mill, the shaft head of the universal spindle should change along with the height of the roll system of the roll, otherwise, the dead weight of the universal spindle will generate an additional force on the flat head of the roll, so that the flat head is difficult to pull out, and the problems of difficult operation and adjustment, low roll changing efficiency and the like exist in the dead weight balance mode under the roll changing state.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a balance bracket of universal spigots of rolling mills, which adopts a hydraulic balance mode to realize the accurate balance of the dead weight of the universal spigots of the rolling mills; the roll changing auxiliary support arranged independently can effectively improve the roll changing efficiency of the rolling mill.
A universal spindle balance bracket of a rolling mill comprises a base 1, an upper spindle balancing device 2, a lower spindle balancing device 3 and a roll changing auxiliary support 4; the upper connecting shaft balancing device 2 and the lower connecting shaft balancing device 3 are arranged on the base 1, and the roller changing auxiliary support 4 is vertically arranged on the base 1;
the base 1 comprises a base 11 and a bottom plate 12; the base 11 is fixed on the bottom plate 12 through bolts;
the upper connecting shaft balancing device 2 comprises a connecting arm 21, a supporting frame 22, an upper connecting shaft balancing hydraulic cylinder 23 and an upper connecting shaft split bearing 24; the upper connecting shaft balance hydraulic cylinder 23 is vertically and movably arranged on the base 11, and the upper connecting shaft balance hydraulic cylinder 23 can rotate relative to the base 11; the tail end of the connecting arm 21 is hinged with the base 11, a supporting cross beam in the middle of the connecting arm 21 is hinged with the cylinder head of an upper connecting shaft balance hydraulic cylinder 23, and the front end of the connecting arm 21 is hinged with a supporting frame 22; the upper connecting shaft subdivision bearing 24 is movably arranged between two upright posts of the supporting frame 22, and the upper connecting shaft subdivision bearing 24 can rotate relative to the supporting frame 22;
the lower shaft balancing device 3 comprises a lower shaft split bearing 31, a sliding seat 32 and a lower shaft balancing hydraulic cylinder 33; the lower shaft balance hydraulic cylinder 33 is vertically and fixedly arranged on the base 11, the sliding seat 32 is connected with the lower shaft split bearing 31 through a bolt, and the sliding seat 32 is in arc surface contact with the cylinder head of the lower shaft balance hydraulic cylinder 33;
the roller-changing auxiliary support 4 comprises an auxiliary support 41, an adjusting plate 42, an adjusting screw 43 and an adjusting bolt 44; the auxiliary frame 41 is of a double-layer frame structure, one side of the upper-layer beam is provided with an adjusting screw mounting hole, and the center of the lower-layer beam is provided with an adjusting bolt mounting hole; the adjusting plate 42 is movably arranged in a groove above the upper-layer beam of the auxiliary frame 41, the adjusting screw 43 is arranged on the upper-layer beam of the auxiliary frame 41, and one side of the bottom surface of the adjusting plate 42 is in contact with the adjusting screw 43; the adjusting bolt 44 is installed on the lower layer beam of the auxiliary frame 41.
The adjusting plate 42 is of a T-shaped structure.
A set gap is formed between the upper connecting shaft splitting bearing 24 and the support frame 22 in the radial direction of the connecting shaft, so that the upper connecting shaft splitting bearing 24 can generate micro-play in the working process.
A set gap is formed between the sliding seat 32 and the cylinder head of the lower shaft balance hydraulic cylinder 33 in the radial direction of the connecting shaft, so that the lower shaft split bearing 31 can generate micro-movement in the working process.
The utility model has the advantages of compact integral structure, simple operation and maintenance process, and time and labor cost saving; the service life of the universal spindle of the rolling mill and the service life of the roller can be effectively prolonged through spindle balance, and extra impact on the roller caused by rotation of the universal spindle is greatly reduced. The device adopts a hydraulic balance mode, and the balance pressure is adjusted through the electromagnetic valve, so that the accurate balance of the dead weight of the universal spindle of the rolling mill can be realized; the balance of the upper connecting shaft and the balance of the lower connecting shaft are mutually independent, and the balance adjustment of the two universal connecting shafts cannot mutually influence; set up roll change auxiliary stand alone, guarantee that the main roll can not receive the influence of universal spindle dead weight under roll change state, improve roll change efficiency.
Drawings
Fig. 1 is a schematic structural view of a universal spindle balance bracket of a rolling mill provided in an embodiment of the present invention;
fig. 2 is a sectional view of a bearing of the upper and lower spigots of the universal spindle balance bracket of the rolling mill provided by the embodiment of the invention;
fig. 3 is a schematic view of an upper roller height adjusting structure of the roller changing auxiliary support provided by the embodiment of the present invention;
FIG. 4 is a schematic view of a lower roller height adjusting structure of the auxiliary roller changing bracket according to an embodiment of the present invention;
fig. 5 is a schematic view of a working state of a universal spindle balance bracket of a rolling mill provided in an embodiment of the present invention;
description of the drawings:
1-base, 11-base, 12-bottom plate; 2-an upper connecting shaft balancing device, 21-a connecting arm, 22-a supporting frame, 23-an upper connecting shaft balancing hydraulic cylinder and 24-an upper connecting shaft split bearing; 3-lower shaft connecting balancing device, 31-lower shaft connecting split bearing, 32-sliding seat and 33-lower shaft connecting balancing hydraulic cylinder; 4-roller changing auxiliary support, 41-auxiliary support, 42-adjusting plate, 43-adjusting screw and 44-adjusting bolt.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
The embodiment of the utility model provides a rolling mill universal spindle bracket when realizing universal spindle dead weight accurate balance under the rolling mill work position, sets up the roll change auxiliary stand alone, has effectively improved rolling mill roll change efficiency. The following is a detailed description of the present invention by way of example:
a universal spindle balancing bracket of a rolling mill comprises a base 1, an upper spindle balancing device 2, a lower spindle balancing device 3 and a roll changing auxiliary support 4; the upper spindle balancing device 2 and the lower spindle balancing device 3 are arranged on the base 1, and the roll changing auxiliary support 4 is vertically arranged on the base 1.
The base 1 comprises a base 11 and a bottom plate 12; the base 11 is fixed on the bottom plate 12 through bolts;
the upper connecting shaft balancing device 2 comprises a connecting arm 21, a supporting frame 22, an upper connecting shaft balancing hydraulic cylinder 23 and an upper connecting shaft split bearing 24; the upper connecting shaft balance hydraulic cylinder 23 is vertically and movably arranged on the base 11, and the upper connecting shaft balance hydraulic cylinder 23 can rotate relative to the base 11 according to the change of the working position of the connecting shaft; the tail end of the connecting arm 21 is hinged with the base 11, a supporting cross beam in the middle of the connecting arm 21 is hinged with the cylinder head of the upper connecting shaft balance hydraulic cylinder 23, and the front end of the connecting arm 21 is hinged with the supporting frame 22; the upper connecting shaft split bearing 24 is movably arranged between two upright posts of the support frame 22, and the upper connecting shaft split bearing 24 can rotate relative to the support frame 22 according to the change of the working position of the connecting shaft;
the lower connecting shaft balancing device 3 comprises a lower connecting shaft split bearing 31, a sliding seat 32 and a lower connecting shaft balancing hydraulic cylinder 33; the lower shaft balance hydraulic cylinder 33 is vertically and fixedly installed on the base 11, the sliding seat 32 is connected with the lower shaft split bearing 31 through a bolt, and the sliding seat 32 is in arc surface contact with the cylinder head of the lower shaft balance hydraulic cylinder 33;
the roller changing auxiliary bracket 4 comprises an auxiliary bracket 41, an adjusting plate 42, an adjusting screw 43 and an adjusting bolt 44; the adjusting plate 42 is movably arranged in a groove above the auxiliary frame 41, two adjusting screws 43 are arranged on the upper-layer cross beam of the auxiliary frame 41, and the adjusting bolt 44 is arranged on the lower-layer cross beam of the auxiliary frame 41.
The auxiliary frame 41 is a double-layer frame structure, an adjusting screw mounting hole is processed at one side of the upper-layer beam, and an adjusting bolt mounting hole is processed at the center of the lower-layer beam.
The adjusting plate 42 has a T-shaped structure, and one side of the bottom surface is in contact with the adjusting screw 43.
A set gap is formed between the upper connecting shaft split bearing 24 and the support frame 22 in the radial direction of the connecting shaft, so that the upper connecting shaft split bearing 24 can generate micro-play in the working process.
A set gap is formed between the cylinder head of the shifting slide seat 32 and the cylinder head of the lower shaft balance hydraulic cylinder 33 in the radial direction of the connecting shaft, so that the lower shaft split bearing 31 can generate micro-play in the working process.
The utility model discloses do not specifically prescribe a limit to subdivision bearing hole size shape, can change subdivision bearing size as required, this device can adapt to the balanced work of universal spindle of various different dimension specifications.
The utility model discloses do not specifically prescribe a limit to supplementary roll change support height, as long as guarantee when the universal joint falls on supplementary roll change support to main roll change height can, according to actual conditions, change supplementary roll change support height to deal with the roll change height of different model rolling mills.
The utility model provides a rolling mill universal spindle balance bracket device embodiment as follows:
the device is used for balancing the self gravity of the universal spindle of the rolling mill, after the whole installation of the machine train is completed, the pressures of the electromagnetic valves of the balance hydraulic cylinders of the upper spindle and the lower spindle are respectively adjusted, the balance pressure points of the universal spindle are found, 5% -10% of over-balance pressure is applied, the pressure is kept constant, and the upper universal spindle and the lower universal spindle are supported in a floating mode. The axial micro displacement of the upper connecting shaft caused by the height lifting is offset by the change of the angle of the support frame; the axial micro-displacement of the lower connecting shaft caused by the height lifting is offset by the micro-displacement of the sliding seat relative to the split bearing of the lower connecting shaft.
In the roll changing state of the rolling mill, the height of a roll system of the rolling mill is reduced to drive the height of a universal spindle head to be reduced, an upper spindle balance hydraulic cylinder and a lower spindle balance hydraulic cylinder are unloaded through an overflow valve, the upper spindle falls on the top surface of an adjusting plate, and the lower spindle falls on the head of the adjusting bolt; the height of an upper adjusting plate is controlled by rotating an adjusting screw, and the roll changing height of an upper connecting shaft is accurately adjusted, so that the height of a shaft head of the upper connecting shaft is just opposite to the central line of an upper roll; and rotating the adjusting bolt to adjust the height of the head of the adjusting bolt and accurately adjusting the roll changing height of the lower connecting shaft to ensure that the height of the shaft head of the lower connecting shaft is just opposite to the central line of the lower roll, finishing the height adjustment of the universal connecting shaft of the rolling mill, and starting the roll changing operation of the rolling mill without additional force between the connecting shaft and the roll.
Through the embodiment, the utility model has the following beneficial effect or advantage:
1) The universal spindle balance bracket of the rolling mill provided by the utility model has compact integral structure and simple operation and maintenance process, can greatly reduce the extra impact on the roller caused by the rotation of the universal spindle, and improve the service life of the universal spindle of the rolling mill and the roller; the hydraulic driving mode can realize the accurate balance of the dead weight of the universal spindle; the balance of the upper connecting shaft and the balance of the lower connecting shaft are mutually independent, and the balance adjustment of the two universal connecting shafts cannot mutually influence.
2) Set up roll change auxiliary stand alone, guarantee can not receive the influence of universal spindle dead weight at the main roll under roll change state, improve roll change efficiency.
Claims (4)
1. The utility model provides a rolling mill cardan shaft balancing bracket which characterized in that: the balance bracket comprises a base (1), an upper connecting shaft balance device (2), a lower connecting shaft balance device (3) and a roll changing auxiliary support (4); the upper connecting shaft balancing device (2) and the lower connecting shaft balancing device (3) are arranged on the base (1), and the roller changing auxiliary support (4) is vertically arranged on the base (1);
the base (1) comprises a base (11) and a bottom plate (12); the base (11) is fixed on the bottom plate (12) through bolts;
the upper connecting shaft balancing device (2) comprises a connecting arm (21), a supporting frame (22), an upper connecting shaft balancing hydraulic cylinder (23) and an upper connecting shaft split bearing (24); the upper connecting shaft balance hydraulic cylinder (23) is vertically and movably arranged on the base (11), and the upper connecting shaft balance hydraulic cylinder (23) can rotate relative to the base (11); the tail end of the connecting arm (21) is hinged with the base (11), a supporting cross beam in the middle of the connecting arm (21) is hinged with the cylinder head of the upper connecting shaft balance hydraulic cylinder (23), and the front end of the connecting arm (21) is hinged with the supporting frame (22); the upper connecting shaft split bearing (24) is movably arranged between two upright posts of the support frame (22), and the upper connecting shaft split bearing (24) can rotate relative to the support frame (22);
the lower shaft balancing device (3) comprises a lower shaft split bearing (31), a sliding seat (32) and a lower shaft balancing hydraulic cylinder (33); the lower shaft balance hydraulic cylinder (33) is vertically and fixedly installed on the base (11), the sliding seat (32) is connected with the lower shaft split bearing (31) through a bolt, and the sliding seat (32) is in arc surface contact with the cylinder head of the lower shaft balance hydraulic cylinder (33);
the roller changing auxiliary support (4) comprises an auxiliary frame (41), an adjusting plate (42), an adjusting screw (43) and an adjusting bolt (44); the auxiliary frame (41) is of a double-layer frame structure, one side of the upper-layer beam is provided with an adjusting screw mounting hole, and the center of the lower-layer beam is provided with an adjusting bolt mounting hole; the adjusting plate (42) is movably arranged in a groove above an upper-layer cross beam of the auxiliary frame (41), the adjusting screw (43) is arranged on the upper-layer cross beam of the auxiliary frame (41), and one side of the bottom surface of the adjusting plate (42) is in contact with the adjusting screw (43); the adjusting bolt (44) is arranged on the lower-layer cross beam of the auxiliary frame (41).
2. The balance bracket of claim 1, wherein: the adjusting plate (42) is of a T-shaped structure.
3. The balance bracket of claim 1, wherein: a set gap is formed between the upper connecting shaft split bearing (24) and the support frame (22) in the radial direction of the connecting shaft.
4. The balance bracket of claim 1, wherein: and a set gap is formed between the sliding seat (32) and the cylinder head of the lower connecting shaft balance hydraulic cylinder (33) in the radial direction of the connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221145085.9U CN217858025U (en) | 2022-05-13 | 2022-05-13 | Universal spindle balance bracket of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221145085.9U CN217858025U (en) | 2022-05-13 | 2022-05-13 | Universal spindle balance bracket of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217858025U true CN217858025U (en) | 2022-11-22 |
Family
ID=84089159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221145085.9U Active CN217858025U (en) | 2022-05-13 | 2022-05-13 | Universal spindle balance bracket of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217858025U (en) |
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2022
- 2022-05-13 CN CN202221145085.9U patent/CN217858025U/en active Active
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