Back-up roll base plate dismounting and mounting device

Abstract

The utility model discloses a back-up roll backing plate disassembling and assembling device which comprises a chassis, a support, a walking part and a disassembling and assembling part. The support, the walking part and the disassembling and assembling part are arranged on the chassis. A cross beam is arranged on the support, the cross beam is an I-shaped beam, a track is arranged on the cross beam, the walking part is composed of a walking frame, a first roller and a second roller, the first roller and the second roller are installed on the walking frame, and the first roller and the second roller are in rolling contact with the track; the walking frame is arranged below the cross beam, and the dismounting part is connected below the walking frame; the dismounting part is composed of a base plate, a first crank arm and a second crank arm, the first crank arm and the second crank arm are hinged to the end of the base plate, a first hydraulic cylinder is connected between the first crank arm and the second crank arm, and the two ends of the first hydraulic cylinder are hinged to the first crank arm and the second crank arm respectively. The utility model well solves the problems that the base plate is easy to bond and difficult to disassemble and assemble, and has the characteristics of good reliability and strong practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling, in particular to a support roller pad disassembly and assembly device. Background Art

[0002] During the production of steel enterprises, when the hot rolling and finishing support rolls and working rolls are installed and used, the support roll diameters will change due to support roll wear and machining. In order to ensure that the contour lines of different frames are at the same level, after the support rolls and roll diameters of each frame change, the support roll pads are adjusted and replaced, and the thickness of different pads are changed to achieve the rolling contour lines at the same level. The hot rolling and finishing support roll pads are placed in the slots of the finishing support roll changing trolley, and there are lower positioning blocks around them to limit the movement of the support roll pads. The support roll pads play the role of supporting the hot rolling and finishing support rolls.

[0003] The replacement process of the support roller pads is as follows: according to the different diameters of the finishing support rollers and working rolls, the finishing support roller pads are replaced as the support rollers are replaced. The thickness of the finishing support roller pads is a fixed value. During the roll change, the thickness of the support roller pads that need to be replaced is calculated by the support roller and working roll formula. By superimposing support roller pads of different thicknesses, the rolling contour lines of each stand mill are on the same horizontal line. The problem with the disassembly and assembly of the pads is that during the replacement of the support roller pads, oil is brushed between the two pads to eliminate the gap between the two pads. The maximum rolling force of the finishing mill stand of the 1250mm hot rolling production line is about 1500ton. During the rolling process, the support roller pads will be tightly fitted, and the disassembly gap left between the lower positioning block and the pad is very small, about 3cm in width. In the case of a small space, ordinary tools cannot be quickly removed and replaced. Each time the support rollers and pads are replaced, the pads removal and replacement time is long, and some pads even need to be destructively removed. Utility Model Content

[0004] The utility model is used to overcome the defects of the prior art and provide a support roller pad disassembly and assembly device to solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A support roller pad disassembly and assembly device comprises a chassis and a bracket, a walking part and a disassembly part arranged thereon; a crossbeam is arranged on the bracket, the crossbeam is an I-beam, and a track is arranged on it, the walking part consists of a walking frame and a first roller and a second roller installed thereon, and the first roller and the second roller are in rolling contact with the track; the walking frame is arranged below the crossbeam, and the disassembly and assembly device is connected below the walking frame; the disassembly and assembly device consists of a base plate and a first crank arm and a second crank arm, the upper ends of the first crank arm and the second crank arm are hinged to the end of the base plate, and a first hydraulic cylinder is connected between the first crank arm and the second crank arm, and the two ends of the first hydraulic cylinder are respectively hinged to the first crank arm and the second crank arm, and through the extension and contraction of the first hydraulic cylinder, the lower ends of the first crank arm and the second crank arm clamp or release the two sides of the pad.

[0007] The above-mentioned support roller pad disassembly and assembly device has wedge-shaped prying claws at the lower ends of the first curved arm and the second curved arm, and a notch matching the prying claws is provided under the pad to facilitate the first curved arm and the second curved arm to pry and grab the pad.

[0008] The above-mentioned support roller pad disassembly and assembly device, the disassembly and assembly part also includes an adsorption component, the adsorption component is composed of a second hydraulic cylinder and a magnet, the magnet is arranged under the base plate, the second hydraulic cylinder is connected between the magnet and the base plate, a vertical slide rail is arranged under the base plate, and a slider matching the slide rail is arranged on the magnet.

[0009] The support roller pad disassembly and assembly device is additionally provided with a third hydraulic cylinder, which is connected between the bracket and the base plate. The position of the disassembly and assembly part relative to the pad is adjusted by pushing and pulling through the extension and contraction of the third hydraulic cylinder.

[0010] The above-mentioned support roller pad disassembly and assembly device is provided with a universal roller under the bracket.

[0011] In the above-mentioned support roller pad disassembly and assembly device, the first hydraulic cylinder is a double-outlet hydraulic cylinder. Beneficial effects

[0012] Compared with the existing technology, the present utility model has the following advantages: First, the disassembly and assembly part is movably connected to the bottom of the beam, and the first curved arm and the second curved arm adopt a clamping structure to grab the pad, which solves the problem that the pad is difficult to disassemble and assemble in a small space and difficult to use manual force. Second, the lower ends of the first curved arm and the second curved arm are set as wedge-shaped prying claws, and a notch matching the prying claw is set under the pad, which solves the difficulty of not being able to grab the pad after it is bonded. The pad can be quickly disassembled by prying the notch on the pad with the prying claw, while ensuring the stability of the grabbing. Third, the provided adsorption component can cooperate with the first curved arm and the second curved arm to quickly suck up the pad when disassembling the pad; at the same time, when installing the pad, the pad can be quickly and accurately put back into place, increasing the stability of disassembly and assembly and the accuracy of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the walking part of the utility model;

[0016] Figure 3 This is a right side schematic diagram of the disassembly and assembly part of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation of the pad of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the pad of the utility model when viewed from above;

[0019] The reference numerals in the figure represent:

[0020] 1. Chassis, 2. Bracket, 3. Traveling part, 4. Assembly and disassembly part, 5. Pad, 6. Second hydraulic cylinder, 7. Magnet, 8. Third hydraulic cylinder, 9. Universal roller, 10. Lower positioning block, 11. Counterweight, 2-1. Crossbeam, 2-1-1. Track, 3-1. First roller, 3-2. Second roller, 3-3. Traveling frame, 4-1. Base plate, 4-2. First crank arm, 4-3. Second crank arm, 4-4. First hydraulic cylinder, 4-5. Slide rail, 4-6. Pry claw, 5-1. Notch. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-5 As shown, the utility model includes a chassis 1 and a bracket 2, a running part 3 and a disassembly part 4 arranged thereon.

[0023] A crossbeam 2-1 is provided on the bracket 2. The crossbeam 2-1 is an I-beam with a track 2-1-1 provided thereon. The bracket 2 is also provided with an oblique tie bar, one end of which is connected to the bracket 2 and the other end is connected to the crossbeam 2-1, which serves to stabilize the crossbeam. Similar reinforcing ribs can also be provided at the junction of the bracket 2 and the chassis 1 to stabilize the bracket.

[0024] The walking part 3 is composed of a walking frame 3-3 and a first roller 3-1 and a second roller 3-2 mounted thereon, and the first roller 3-1 and the second roller 3-2 are in rolling contact with the track 2-1-1; the walking frame 3-3 is arranged below the crossbeam 2-1, and the disassembly and assembly part 4 is connected to the bottom of the walking frame 3-3; the disassembly and assembly part 4 is composed of a base plate 4-1 and a first curved arm 4-2 and a second curved arm 4-3, the upper ends of the first curved arm 4-2 and the second curved arm 4-3 are hinged to the end of the base plate 4-1, and the first curved arm 4-2 is hinged to the end of the base plate 4-1. A first hydraulic cylinder 4-4 is connected between the first and second crank arms 4-3. Both ends of the first hydraulic cylinder 4-4 are hinged to the first crank arm 4-2 and the second crank arm 4-3 respectively. Through the extension and contraction of the first hydraulic cylinder 4-4, the lower ends of the first crank arm 4-2 and the second crank arm 4-3 clamp or release the two sides of the pad 5. When the first hydraulic cylinder 4-4 is extended, the lower ends of the first crank arm 4-2 and the second crank arm 4-3 release the pad 5. When the first hydraulic cylinder 4-4 is contracted, the lower ends of the first crank arm 4-2 and the second crank arm 4-3 clamp the pad 5.

[0025] There are two first rollers 3 - 1 , which are matched with the tracks on both sides of the I-beam respectively; there are two second rollers 3 - 2 , which are matched with the tracks on both sides of the I-beam respectively.

[0026] The first hydraulic cylinder 4-4 is a dual-exit hydraulic cylinder, with hydraulic rods extending from both ends of the cylinder barrel. The first and second crank arms 4-2 and 4-3 utilize a clamping mechanism to grasp the backing plate 5. The ends of the first hydraulic cylinder 4-4 are hinged to the middle of the first and second crank arms 4-2 and 4-3, respectively. The lower halves of the first and second crank arms 4-2 and 4-3 are nearly perpendicular when gripping the backing plate 5, allowing them to clear the lower positioning block 10 when extended.

[0027] Due to the harsh rolling conditions, the pad 5 will most likely stick together. In order to facilitate the prying of the pad 5: the lower ends of the first curved arm 4-2 and the second curved arm 4-3 are set as wedge-shaped prying claws 4-6, and a notch 5-1 matching the prying claws 4-6 is set below the pad 5, so that the first curved arm 4-2 and the second curved arm 4-3 can pry and grab the pad 5.

[0028] After the pad 5 is pried up, it can be removed manually or an adsorption assembly can be set up: the adsorption assembly consists of a second hydraulic cylinder 6 and a magnet 7. The magnet 7 is set below the base plate 4-1. The second hydraulic cylinder 6 is connected between the magnet 7 and the base plate 4-1. A vertical slide rail 4-5 is set below the base plate 4-1, and a slider matching the slide rail 4-5 is set on the magnet 7. After the pad 5 is pried up, the magnet 7 moves downward under the drive of the second hydraulic cylinder 6, adsorbs the pad 5, and then rises upward. The magnet 7 can be an electromagnet or a neodymium magnet. Of course, other permanent magnets that match the weight of the pad can also be selected according to the weight of the pad.

[0029] To facilitate adjustment of the position of the assembly / disassembly part 4, a third hydraulic cylinder 8 is provided. The third hydraulic cylinder 8 is connected between the bracket 2 and the base plate 4-1. By extending and retracting the third hydraulic cylinder 8, the position of the assembly / disassembly part 4 relative to the base plate 5 is adjusted. To facilitate movement of the chassis, a universal roller 9 is provided below the bracket 2.

Claims

1. A support roller pad disassembly and assembly device, characterized in that: The invention comprises a chassis (1) and a bracket (2) arranged thereon, a walking part (3) and a disassembling part (4); a crossbeam (2-1) is arranged on the bracket (2), the crossbeam (2-1) is an I-beam, and a track (2-1-1) is arranged thereon; the walking part (3) is composed of a walking frame (3-3) and a first roller (3-1) and a second roller (3-2) installed thereon, the first roller (3-1) and the second roller (3-2) rollingly contacting the track (2-1-1); the walking frame (3-3) is arranged below the crossbeam (2-1), and the disassembling part (4) is connected below the walking frame (3-3) The disassembly and assembly portion (4) is composed of a base plate (4-1) and a first curved arm (4-2) and a second curved arm (4-3). The upper ends of the first curved arm (4-2) and the second curved arm (4-3) are hinged to the end of the base plate (4-1). A first hydraulic cylinder (4-4) is connected between the first curved arm (4-2) and the second curved arm (4-3). The two ends of the first hydraulic cylinder (4-4) are respectively hinged to the first curved arm (4-2) and the second curved arm (4-3). Through the extension and contraction of the first hydraulic cylinder (4-4), the lower ends of the first curved arm (4-2) and the second curved arm (4-3) clamp or release the two sides of the pad (5).

2. The support roller pad disassembly and assembly device according to claim 1, characterized in that: The lower ends of the first curved arm (4-2) and the second curved arm (4-3) are provided with wedge-shaped prying claws (4-6), and a notch (5-1) matching the prying claws (4-6) is provided below the pad (5), so as to facilitate the first curved arm (4-2) and the second curved arm (4-3) to pry and grab the pad (5).

3. The support roller pad disassembly and assembly device according to claim 1, characterized in that: The disassembly and assembly portion (4) further includes an adsorption assembly, which is composed of a second hydraulic cylinder (6) and a magnet (7). The magnet (7) is arranged below the base plate (4-1). The second hydraulic cylinder (6) is connected between the magnet (7) and the base plate (4-1). A vertical slide rail (4-5) is arranged below the base plate (4-1). A slider matching the slide rail (4-5) is arranged on the magnet (7).

4. The support roller pad disassembly and assembly device according to claim 1, characterized in that: A third hydraulic cylinder (8) is added, and the third hydraulic cylinder (8) is connected between the bracket (2) and the base plate (4-1). The position of the disassembly and assembly part (4) relative to the pad (5) is adjusted by pushing and pulling through the extension and contraction of the third hydraulic cylinder (8).

5. The support roller pad disassembly and assembly device according to claim 1, characterized in that: A universal roller (9) is provided below the bracket (2).

6. The support roller pad disassembly and assembly device according to claim 1, characterized in that: The first hydraulic cylinder (4-4) is a double-outlet hydraulic cylinder.

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