Quick roll changing trolley for rolling mill

Abstract

The utility model discloses a quick roll changing trolley for a rolling mill, which belongs to the technical field of rolling mill equipment and comprises a transverse moving trolley, a transverse trolley track arranged on the transverse moving trolley in a sliding manner, a supporting column frame fixedly connected to the top end of the transverse moving trolley, a supporting frame fixedly connected to the top end of the supporting column frame, an up-and-down trolley connected to the supporting column frame in a sliding manner, and a supporting arm sleeve fixedly connected to the side wall of the up-and-down trolley. The supporting column frame and the up-down trolley are spirally connected with a lead screw, the lead screw is located at the axis position of the supporting column frame, the supporting frame and the up-down trolley, the top end of the lead screw is sleeved with a positioning seat, the positioning seat is meshed with a positioning rod, the positioning rod is in driving connection with a first driving motor, and the first driving motor is fixedly connected to one side of the supporting frame; a second driving motor is arranged at the top end of the transverse moving trolley and is in driving connection with the transverse moving trolley through a driving chain. According to the utility model, automatic roller replacement can be realized, the stability in the roller replacement process is further enhanced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling mill equipment, in particular to a rolling mill quick roll changing trolley. Background Art

[0002] The main working area of ​​the cold rolling mill consists of working rolls and support rolls. There is a stainless steel belt between the two working rolls. When the rolling mill is working, the pressure applied to the stainless steel belt and the working rolls is 1,000 tons. The two working rolls are prone to reduce surface roughness, deformation, scratches, peeling, and other conditions that affect product quality. Therefore, in order to ensure product quality, the working rolls need to be replaced frequently, with a replacement cycle of about 1.5 hours. The existing technology uses an overhead crane to assist in replacement, and the old working rolls are manually removed and replaced with new working rolls through a lever sleeve. Since the working roll replacement cycle is short and frequent, it needs to be replaced in about 1.5 hours. Manual replacement is time-consuming and labor-intensive, and it is also easy to cause secondary damage to the working rolls. Replacing new rolls is prone to surface scratches, affecting product quality. Utility Model Content

[0003] The purpose of the utility model is to provide a rolling mill quick roll changing trolley, which can realize automatic roll changing, further enhance the stability during the roll changing process, and improve production efficiency.

[0004] The technical solution adopted by the present invention is that the rolling mill quick roll changing trolley includes a transverse trolley, the transverse trolley is slidingly provided with a transverse trolley track, the top of the transverse trolley is fixedly connected to a support frame, the top of the support frame is fixedly connected to a support frame, the support frame is slidingly connected to the upper and lower trolleys, the side walls of the upper and lower trolleys are fixedly connected to the support arm sleeves, the support frame and the upper and lower trolleys are spirally connected with a lead screw, the lead screw is located at the axial position of the support frame, the support frame and the upper and lower trolleys, the top end of the lead screw is externally connected to a positioning seat, the positioning seat is meshed with a positioning rod, the positioning rod is drive-connected to a first drive motor, and the first drive motor is fixed to one side of the support frame.

[0005] The utility model is also characterized in that:

[0006] The support arm sleeve comprises a support arm and a sleeve. The sleeve is movably connected to the support arm, and a fastener is arranged in the sleeve.

[0007] The support frame includes a first support, a second support and a crossbeam.

[0008] The upper and lower trolleys include a car body, a nut is fixed to the top of the car body, the nut is spirally connected to the lead screw, and the first pulley and the second pulley are respectively connected to the two sides of the car body. The first pulley and the second pulley are located at opposite ends of the car body, and the first pulley and the second pulley are slidably connected to the support frame.

[0009] A second drive motor is provided on the top of the transverse trolley, and the second drive motor is drive-connected to the transverse trolley through a drive chain.

[0010] The beneficial effects of the utility model are:

[0011] The utility model discloses a rolling mill quick roll changing trolley which solves the problems of manual roll changing which is time-consuming, labor-intensive and inefficient, and which easily causes scratches on the working roll surface and affects product quality, and further meets the conditions of automated production. The rolling mill quick roll changing trolley is easy to operate, and the linkage between the screw rod, the positioning seat and the positioning rod makes roll changing safer, more reliable and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the utility model of the rolling mill quick roll changing trolley;

[0013] Figure 2 This is a structural diagram of the support frame and upper and lower trolleys disclosed in the utility model;

[0014] Figure 3 It is a structural diagram of the support arm sleeve disclosed in the utility model.

[0015] In the figure, 1. transverse trolley, 2. second drive motor, 3. drive chain, 4. support frame, 401. first support, 402. second support, 403. crossbeam, 5. upper and lower trolleys, 501. vehicle body, 502. first pulley, 503. second pulley, 504. nut, 6. first drive motor, 7. lead screw, 8. support arm sleeve, 801. support arm, 802. sleeve, 803. fastener, 9. transverse trolley track, 10. positioning seat, 11. positioning rod, 12. support frame. DETAILED DESCRIPTION

[0016] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. Example

[0017] like Figure 1 As shown, the rolling mill quick roll changing trolley disclosed by the utility model comprises a transverse trolley 1, the transverse trolley 1 is slidingly provided with a transverse trolley track 9, the top of the transverse trolley 1 is fixedly connected to a support frame 4, the top of the support frame 4 is fixedly connected to a support frame 12, the support frame 4 is slidably connected to the upper and lower trolleys 5, the side walls of the upper and lower trolleys 5 are fixedly connected with a support arm sleeve 8, the support frame 4, the support frame 12 and the upper and lower trolleys 5 are spirally connected with a lead screw 7, the lead screw 7 is located at the axial position of the support frame 4 and the upper and lower trolleys 5, the top outer cover of the lead screw 7 is connected with a positioning seat 10, the positioning seat 10 is meshed with a positioning rod 11, the positioning rod 11 is tooth-engaged with the lead screw 7, the axis of the positioning seat 10 coincides with the axis of the lead screw 7, and an internal threaded hole is provided at the axis of the positioning seat 10, the positioning seat 10 is threadedly connected to the lead screw 7 through the internal threaded hole, the positioning rod 11 is driven and connected to the first drive motor 6, and the first drive motor 6 is fixed to one side of the support frame 12;

[0018] A second drive motor 2 is provided at the top of the transverse moving trolley 1 , and the second drive motor 2 is driven and connected to the transverse moving trolley 1 through a drive chain 3 .

[0019] By controlling the first drive motor 6 to drive the positioning rod 11 to rotate, the positioning rod 11 applies a circumferential force to the positioning seat 10, so that the positioning seat 10 rotates around its own axis under the drive of the positioning rod 11, and then applies an axial force to the screw 7 through the threaded connection between the screw and the screw 7. The screw 7 moves under the action of the axial force, so that the upper and lower trolleys 5 drive the support arm sleeve 8 to rise to the position of the working roller. The first drive motor 6 stops, the positioning rod 11 limits the rotation of the positioning seat 10, and the positioning seat 10 limits the movement of the screw 7 on its axis, so that the support arm sleeve 8 is always in the The working roll that needs to be replaced is increased in stability, and then the second drive motor 2 is controlled to move the transverse trolley 1 toward the rolling roll until the support arm sleeve 8 is put on the working roll and the second drive motor 2 is controlled to move the transverse trolley 1 backward to drag the working roll out. Finally, the first drive motor 6 is controlled to rotate and move the screw 7, so that the upper and lower trolleys 5 drive the support arm sleeve 8 and the working roll to descend to the ground support. The new working roll is reversed in the same way. The mill quick roll changing trolley can load the new working roll accurately, non-destructively and quickly into the rolling mill to complete the replacement work. Example

[0020] Based on Example 1,

[0021] The support arm sleeve 8 includes a support arm 801 and a sleeve 802 . The sleeve 802 is movably connected to the support arm 801 . A fastener 803 is provided in the sleeve 802 . The sleeve 802 is controlled externally to drive the fastener 803 to retract and expand.

[0022] When the external control machine starts, the sleeve 802 rotates on the support arm 801, and the fastener 803 expands inside the sleeve 802 to further fix the working roll. When the external control machine stops, the fastener 803 contracts inside the sleeve 802, allowing the working roll to be smoothly removed.

[0023] The support frame 4 includes a first support 401 , a second support 402 and a crossbeam 403 .

[0024] The upper and lower trolleys 5 include a car body 501, a nut 504 is fixed to the top of the car body 501, the nut 504 is spirally connected to the lead screw 7, and the first pulley 502 and the second pulley 503 are respectively connected to the two sides of the car body 501. The first pulley 502 and the second pulley 503 are located at opposite ends of the car body 501, and the first pulley 502 and the second pulley 503 are slidably connected to the support frame 4.

[0025] By controlling the first drive motor 6 to drive the positioning rod 11 to rotate, the positioning rod 11 applies a circumferential force to the positioning seat 10, so that the positioning seat 10 rotates around its own axis under the drive of the positioning rod 11, and then applies an axial force to the screw 7 through the threaded connection between the screw and the screw 7. The screw 7 moves under the action of the axial force, so that the upper and lower trolleys 5 drive the support arm sleeve 8 to rise to the position of the working roller. The first drive motor 6 stops, and the positioning rod 11 limits the rotation of the positioning seat 10. The positioning seat 10 limits the movement of the screw 7 on its axis, so that the support arm sleeve 8 is always located at the working roller to be replaced, increasing its stability. Then the second drive motor 2 is controlled to move the transverse trolley 1 to The roller moves in the direction of the rolling mill until the support arm sleeve 8 is covered with the working roller, the internal fastener 803 of the sleeve 802 is controlled to expand, and a pair of working rollers are fixed. The second drive motor 2 is controlled to move the transverse trolley 1 backward to drag the working roller out, and finally the first drive motor 6 is controlled to rotate and move the screw 7, so that the upper and lower trolleys 5 drive the support arm sleeve 8 and the working roller to descend to the ground support, and the internal fastener 803 of the sleeve 802 is controlled to shrink, cancel the fixation of the working roller, take out the old working roller, and use the same method to reverse the operation of the new working roller. The mill quick roll changing trolley can accurately, non-destructively and quickly load the new working roller into the rolling mill to complete the replacement work.

Claims

1. The rolling mill quick roll changing trolley is characterized by: The invention comprises a transverse trolley (1), wherein the transverse trolley (1) is slidingly provided with a transverse trolley track (9), the top end of the transverse trolley (1) is fixedly connected to a support frame (4), the top end of the support frame (4) is fixedly connected to a support frame (12), the support frame (4) is slidingly connected to an upper and lower trolley (5), the side walls of the upper and lower trolleys (5) are fixedly connected to a support arm sleeve (8), the support frame (4) and the upper and lower trolleys (5) are spirally connected to a lead screw (7), the lead screw (7) is located at the axial position of the support frame (4), the support frame (12) and the upper and lower trolleys (5), the top end of the lead screw (7) is externally connected to a positioning seat (10), the positioning seat (10) is meshed with a positioning rod (11), the positioning rod (11) is drivingly connected to a first drive motor (6), and the first drive motor (6) is fixedly connected to one side of the support frame (12); A second drive motor (2) is provided at the top end of the transverse trolley (1), and the second drive motor (2) is drive-connected to the transverse trolley (1) via a drive chain (3).

2. The rolling mill quick roll changing trolley according to claim 1, characterized in that: The support arm sleeve (8) comprises a support arm (801) and a sleeve (802), the sleeve (802) is movably connected to the support arm (801), and a fastener (803) is provided in the sleeve (802).

3. The rolling mill quick roll changing trolley according to claim 1, characterized in that: The support frame (4) comprises a first support (401), a second support (402) and a crossbeam (403).

4. The rolling mill quick roll changing trolley according to claim 1, characterized in that: The upper and lower trolleys (5) include a trolley body (501), a nut (504) is fixed to the top of the trolley body (501), the nut (504) is spirally connected to the lead screw (7), and a first pulley (502) and a second pulley (503) are respectively connected to both sides of the trolley body (501), the first pulley (502) and the second pulley (503) are located at opposite ends of the trolley body (501), and the first pulley (502) and the second pulley (503) are slidably connected to the support frame (4).

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