Auxiliary roller changing device of plate straightening machine

Abstract

The utility model relates to an auxiliary roll changing device of a plate straightening machine and belongs to the technical field of straightening machine roll changing in metallurgical industry. According to the technical scheme, the roller replacing device comprises a chain wheel base (1), a shaft (2), a chain wheel (4), a bottom plate (5), screws (6), nuts (7), a hoisting plate (8), a pressing plate (9) and a roller replacing chain (022), the chain wheel base (1) is fixed to the bottom plate (5) through the multiple screws (6) and the multiple nuts (7), the chain wheel (4) is rotationally connected to the chain wheel base (1) through the shaft (2), the roller replacing chain (022) is a roller chain, and the roller replacing chain (022) bypasses the chain wheel (4) and then is fixed to the hoisting plate (8) through the pressing plate (9); a circular through hole (401) is formed in the center of the chain wheel (4), and a double-row gear (402) is arranged on the outer side of the chain wheel (4). After the roller replacement driving device fails, emergency quick roller replacement can be continuously completed by means of driving of the travelling crane, and normal production of a production line is guaranteed.

Description

Technical Field

[0001] The utility model relates to an auxiliary roller changing device for a plate straightening machine, belonging to the technical field of roller changing for straightening machines in the metallurgical industry. Background Art

[0002] Plate straightening machines are crucial equipment on hot-rolled medium and heavy plate production lines. Straightening steel plates after rolling is a widely adopted process to optimize plate performance, ensure that plate flatness meets standards, and improve rolling cadence. The straightening machine roller system is the core component of the straightening machine. After a period of use, the straightening machine roller system requires regular replacement due to roller wear, equipment defects, and other reasons.

[0003] Refer to the attached Figure 12 The plate straightening machine roller changing usually adopts the form of hydraulic motor drive + chain energy transmission or motor drive + chain energy transmission. Chain drive has the advantages of high efficiency, low manufacturing and installation precision, and good applicability to complex and harsh working conditions. It is widely used in the plate straightening machine roller changing system.

[0004] During the actual roll changing process on site, if the drive device fails, such as a failure of the hydraulic motor and its hydraulic control system or a failure of the roll changing motor and transmission device, the roll cannot be changed and the drive device must be restored before the roll can be changed. At the same time, during the roll changing process, due to foreign matter such as iron oxide in the roll system, damage to the roll wheel bearings, increased friction resistance between the roll system and the guide plate due to lack of oil, etc., the resistance is large when the roll is pulled out, and the roll system cannot be smoothly pulled out or pushed into place. Repeated pulling and pushing attempts are required, which prolongs the roll changing time and damages the roll changing drive and transmission device.

[0005] Therefore, when encountering such problems, the only option is to passively stop replacing the roll system, repair the drive device or repeatedly pull and push to try to replace the roll, which will extend the maintenance time. Due to the unplanned extension of the maintenance time, the previous and subsequent processes, such as steelmaking and ironmaking, gas balance, contract delivery, etc., will be affected, disrupting the normal production organization plan and seriously affecting the normal production rhythm. Utility Model Content

[0006] The purpose of the utility model is to provide an auxiliary roller changing device for a plate straightening machine, which can continue to complete emergency rapid roller changing with the help of a crane drive after the roller changing drive device fails, thereby ensuring normal production of the production line and solving the problems existing in the background technology.

[0007] The technical solution of the utility model is:

[0008] An auxiliary roller changing device for a plate straightening machine includes a sprocket base, a shaft, a sprocket, a bottom plate, a screw, a nut, a hanging plate, a pressure plate and a roller changing chain. The sprocket base is fixed to the bottom plate by a plurality of screws and nuts. The sprocket is connected to the sprocket base through a shaft. The roller changing chain is a roller chain. After passing around the sprocket, the roller changing chain is fixed to the hanging plate through a pressure plate.

[0009] The hanging plate is an integrated structure consisting of a base plate, a cubic column and a rectangular boss. The base plate is rectangular as a whole and is provided with hanging holes and a plurality of cubic columns arranged at intervals. Each cubic column is provided with an arc-shaped groove. The rectangular bosses are symmetrically arranged on both sides of the hanging plate, and each rectangular boss is provided with a through hole.

[0010] The curvature radius of the arc surface of the arc-shaped groove is consistent with the roller radius of the roller-changing chain, and the spacing of the cubic columns along the length direction is consistent with the link spacing of the roller-changing chain.

[0011] The center of the sprocket is provided with a circular through hole matched with the shaft, and the outer side of the sprocket is provided with a double-row gear meshed with the roller-changing chain.

[0012] The sprocket base is an integrated structure consisting of a rectangular plate and two rectangular vertical plates fixed on the rectangular plate. The rectangular plate is fixed to the bottom plate by four screws and four nuts. The two rectangular vertical plates are respectively provided with equal-diameter concentric shaft holes that match the shaft.

[0013] The two rectangular vertical plates are respectively provided with positioning clamping plates matched with the shaft.

[0014] The beneficial effect of this utility model is that when the plate straightening machine's roller replacement drive fails, this device can be used with the help of a crane to continue emergency roller replacement, avoiding long, unplanned production line shutdowns due to abnormalities, ensuring the normal connection between the upstream and downstream processes of the production line, and buying time for subsequent normal maintenance. It has the advantages of simple structure, low cost, stability and reliability, and convenient and fast operation. It can effectively solve the problem of being unable to replace rollers due to a failure of the plate straightening machine's roller replacement drive device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 Schematic diagram of the structure of the sprocket base;

[0017] Figure 3 is a structural diagram of the shaft;

[0018] Figure 4 It is a structural diagram of the positioning card;

[0019] Figure 5 Schematic diagram of the structure of the sprocket;

[0020] Figure 6 is a structural diagram of the base plate;

[0021] Figure 7 It is a structural diagram of the lifting plate;

[0022] Figure 8It is a structural diagram of the pressing plate;

[0023] Figure 9 This is a schematic diagram of the use state of the utility model;

[0024] Figure 10 This is a schematic diagram of the pumping roller system of the present utility model;

[0025] Figure 11 This is a schematic diagram of the push roller system of the present utility model;

[0026] Figure 12 It is a structural diagram of a straightening machine and a roller changing device in the background technology;

[0027] In the picture: 01- Plate straightening machine;

[0028] 02-roller changing device, 021-hydraulic motor, 022-roller changing chain, 023-driving sprocket, 024-sprocket bearing seat;

[0029] 03-Straightening machine roller system;

[0030] 1-sprocket base, 2-shaft, 3-positioning plate, 4-sprocket, 5-base plate, 6-screw, 7-nut, 8-lifting plate, 9-pressing plate;

[0031] 101- rectangular plate, 102- evenly distributed bolt holes, 103- rectangular vertical plate, 104- axis hole, 105- internal threaded hole, 106- rectangular notch;

[0032] 201- rectangular groove;

[0033] 301-bolt through hole;

[0034] 401-circular through hole, 402-double row gears, 403-arc surface;

[0035] 501-evenly distributed bolt through holes;

[0036] 801-base plate, 802-cubic column, 803-arc groove, 804-rectangular boss, 805-through hole, 806-hanging hole;

[0037] 901-Bolt through hole. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and examples.

[0039] Refer to the attached Figure 1-12, an auxiliary roller changing device for a plate straightening machine, comprising a sprocket base 1, a shaft 2, a sprocket 4, a base plate 5, a screw 6, a nut 7, a hanging plate 8, a pressure plate 9 and a roller changing chain 022. The sprocket base 1 is fixed to the base plate 5 by a number of screws 6 and nuts 7. The sprocket 4 is rotatably connected to the sprocket base 1 through the shaft 2. The roller changing chain 022 is a roller chain. After passing around the sprocket 4, the roller changing chain 022 is fixed to the hanging plate 8 through the pressure plate 9.

[0040] In this embodiment, refer to the attached Figure 1 、 2 The sprocket base 1 is an integrated structure consisting of a rectangular plate 101 and two rectangular vertical plates 104 fixed on the rectangular plate 101. The rectangular plate 101 is fixed to the base plate 5 by four screws 6 and four nuts 7. The two rectangular vertical plates 104 are respectively provided with equal-diameter concentric shaft holes 105 that match the shaft 2. At the same time, the outer sides of the two rectangular vertical plates 104 are provided with internal threaded holes 106. Uniformly distributed bolt through holes 102 are provided on the edge of the rectangular plate 101, and a rectangular notch 103 is provided on one side. The width of the rectangular notch 103 is greater than the width of the roller-changing chain 022.

[0041] Refer to the attached Figure 1 、 3 , the shaft 2 is set to a cylindrical structure, the outer diameter of which is consistent with the inner diameter of the shaft hole 105 of the sprocket base 1, and rectangular grooves 201 are provided on both sides of the shaft 2;

[0042] Refer to the attached Figure 1 、 4 The positioning plate 3 is a thin rectangular plate with the same thickness as the rectangular groove 201 of the shaft 2. The positioning plate 3 is provided with two bolt holes 301, whose size and center distance are consistent with the internal threaded holes 106 of the sprocket base 1. The shaft 2 is installed in the shaft hole 105 of the sprocket base 1 and is constrained by the positioning plate 2.

[0043] Refer to the attached Figure 1 、 5 A circular through hole 401 is provided on the inner side of the sprocket 4, and its inner diameter is consistent with the outer diameter of the shaft 2. A double-row gear 402 is provided on the outer side. The gear-related parameters are consistent with the driving sprocket 023 of the roller changing device 02. An arc surface 403 is provided between the double-row gears 402. The length of the sprocket 4 along the axial direction (the distance between the two end surfaces) is consistent with the distance between the inner sides of the two rectangular vertical plates 104 of the sprocket base 1. The sprocket 4 forms an axial hole with the shaft 2 and is installed on the sprocket base 1.

[0044] Refer to the attached Figure 1 、 6 The bottom plate 5 is a rectangular plate structure with uniformly distributed bolt holes 501 on its edge. The size and distribution of the holes are consistent with the uniformly distributed bolt holes 102 on the sprocket base 1. The bottom plate 5 is connected to the sprocket base 1 by screws 6 and nuts 7 and fixed to the outside of the sprocket bearing seat 024 of the roller changing device. Figure 9 As shown, one side of the rectangular notch 103 of the sprocket base 1 faces the outside of the roller changing device.

[0045] Refer to the attached Figure 1 、 7 The hoisting plate 8 is provided with a base plate 801, which is an overall rectangular plate structure. Multiple evenly spaced cubic columns 802 are provided on the base plate 801. Each cubic column 802 has an arcuate groove 803. The radius of curvature of the arcuate groove 803 is consistent with the roller radius of the roller-changing chain 022. The longitudinal spacing of the cubic columns 802 is consistent with the pitch of the roller-changing chain 022. Rectangular bosses 804 are provided on both sides of the hoisting plate 8, each having a through hole 805. A circular hoisting hole 806 is provided on the top of the hoisting plate 8.

[0046] Refer to the attached Figure 1 、 8 The pressing plate 9 is a rectangular plate structure as a whole, and its edge is provided with uniformly distributed bolt through holes 901, whose size and distribution are consistent with the through holes 805 of the hanging plate 8. The pressing plate 9 is fixed to the hanging plate 8 by bolts.

[0047] The chain can be installed in the cubic column of the lifting plate 8 and constrained by the pressure plate 9.

[0048] See attached Figure 9 、 10 , 11. When in use, the bottom plate 5 and the sprocket base 1 are connected and fixed to the outside of the sprocket bearing seat 024 of the roller changing device through the screw 6 and the nut 7, and the rectangular notch 103 side of the sprocket base 1 faces the outside of the roller changing device.

[0049] When the roller changing drive device fails and cannot be used, use the plate straightening machine to assist the roller changing device and operate according to the following steps:

[0050] (1) Remove the old roller system:

[0051] Disassemble the roller-changing chain 022 and use the front half of the chain to pass over and engage the sprocket 4 on the sprocket base 1. Install the roller-changing chain 022 in the hoisting plate 8 and secure it with the pressure plate 9. The hoisting plate 8 is connected to the crane. To remove the roller, start the crane to rise and the roller can be removed.

[0052] (2) Push in the new roller system:

[0053] Disassemble the roller-changing chain 022 and use the rear half of the chain to engage the chain with the driving sprocket 023 and the sprocket 4 on the sprocket base 1. Install the roller-changing chain 022 in the hoisting plate 8 and secure it with the pressure plate 9. The hoisting plate 8 is connected to the crane. To push the roller, start the crane to rise.

Claims

1. A plate straightening machine auxiliary roller changing device, characterized by: The invention comprises a sprocket base (1), a shaft (2), a sprocket (4), a bottom plate (5), a screw (6), a nut (7), a hanging plate (8), a pressure plate (9) and a roller changing chain (022). The sprocket base (1) is fixed to the bottom plate (5) through a plurality of screws (6) and nuts (7). The sprocket (4) is rotatably connected to the sprocket base (1) through the shaft (2). The roller changing chain (022) is a roller chain. After the roller changing chain (022) passes around the sprocket (4), it is fixed to the hanging plate (8) through the pressure plate (9).

2. The plate straightening machine auxiliary roller changing device according to claim 1, characterized in that: The hanging plate (8) is an integrated structure consisting of a base plate (801), a cubic column (802) and a rectangular boss (804). The base plate (801) is rectangular in shape as a whole. The base plate (801) is provided with hanging holes (806) and a plurality of cubic columns (802) arranged at intervals. Each cubic column (802) is provided with an arc-shaped groove (803). The rectangular bosses (804) are symmetrically arranged on both sides of the hanging plate (8), and each rectangular boss (804) is provided with a through hole (805).

3. The plate straightening machine auxiliary roller changing device according to claim 2, characterized in that: The curvature radius of the arc surface of the arc-shaped groove (803) is consistent with the roller radius of the roller-changing chain (022), and the spacing of the cubic columns (802) along the length direction is consistent with the link spacing of the roller-changing chain (022).

4. The plate straightening machine auxiliary roller changing device according to claim 1, characterized in that: The center of the sprocket (4) is provided with a circular through hole (401) that matches the shaft (2), and the outer side of the sprocket (4) is provided with a double-row gear (402) that meshes with the roller-changing chain (022).

5. The plate straightening machine auxiliary roller changing device according to claim 1, characterized in that: The sprocket base (1) is an integrated structure consisting of a rectangular plate (101) and two rectangular vertical plates (104) fixed on the rectangular plate (101). The rectangular plate (101) is fixed to the base plate (5) via four screws (6) and four nuts (7). The two rectangular vertical plates (104) are respectively provided with equal-diameter concentric axial holes (105) that match the shaft (2).

6. The plate straightening machine auxiliary roller changing device according to claim 5, characterized in that: The two rectangular vertical plates (104) are respectively provided with positioning clamping plates (3) that match the shaft (2).

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