A medium frequency induction heating roll shaft sleeve dismounting device

Abstract

The utility model discloses a kind of medium-frequency induction heating roll shaft sleeve dismounting device, including two I-beam main frames, two The I-beam main frames are symmetrically arranged, and beam is fixedly assembled between two The I-beam main frames, the end of two The I-beam main frames is fixedly assembled with clamping plate, the inner wall lower end of the clamping plate is equipped with clamping groove, the inner wall sleeve of the clamping groove is equipped with roll shaft and shaft sleeve, and the outer wall of roll shaft and shaft sleeve is wound with induction coil, the induction coil is located at the side of clamping plate close to I-beam main frame, the side end of the beam is provided with hydraulic jack, the piston rod of the hydraulic jack corresponds with roll shaft, two The I-beam main frames and the hydraulic jack are all hoisting arrangement, improve the success rate of dismounting shaft sleeve by this sleeve dismounting mode, and then improve operation efficiency, heating sleeve dismounting and other technical problems The solution directly affects the construction period problem of overhaul.

Description

Technical Field

[0001] This utility model relates to the field of roll shaft disassembly technology, specifically to a medium-frequency induction heating roll shaft disassembly device. Background Technology

[0002] Major and minor overhaul projects in cold and hot rolling mills always involve the disassembly and replacement of bearings on the roll shafts. This has always been a project that cold and hot rolling mills pay close attention to. The original disassembly method was to use a water welding torch to heat the roll shaft and then use a pressure fixture to push the sleeve out. This method was acceptable when the interference fit was small, but it was very difficult to disassemble the roll shaft when the interference fit was large. Utility Model Content

[0003] The purpose of this invention is to provide a medium-frequency induction heating roll shaft disassembly device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a medium-frequency induction heating roll shaft disassembly device, comprising two I-beam main frames, the two I-beam main frames being symmetrically arranged, and a crossbeam being fixedly assembled between the two I-beam main frames. A clamping plate is fixedly assembled at the ends of the two I-beam main frames. A groove is formed at the lower end of the inner wall of the clamping plate. A roll shaft and a bushing are fitted onto the inner wall of the groove. An induction coil is wound around the outer wall of the roll shaft and the bushing. The induction coil is located on the side of the clamping plate near the I-beam main frame. A hydraulic jack is provided at the side end of the crossbeam. The piston rod of the hydraulic jack corresponds to the roll shaft. Both I-beam main frames and the hydraulic jack are hoisted.

[0005] Preferably, it also includes two fixing structures, which respectively penetrate the two I-beam main frames, and the two fixing structures clamp the hydraulic jack; The fixing structure includes a connecting plate that passes through an I-beam main frame. A clamping block is fixedly assembled on the inner end of the connecting plate. The clamping block is in contact with the outer wall of the hydraulic jack. Bolts pass through the surface of the I-beam main frame and are screwed to the connecting plate.

[0006] Preferably, it also includes an infrared monitoring structure, which is mounted on the surface of one side of the I-beam main frame; The infrared monitoring structure includes a support cylinder, which is fixedly assembled to the surface of one side of the I-beam main frame, and an infrared thermal imager is inserted into the inner wall of the support cylinder.

[0007] Preferably, it also includes three lifting rings, two of which are fixed to the surfaces of the two I-beam main frames, and the other lifting ring is fixedly mounted to the surface of the hydraulic jack.

[0008] Preferably, the lower ends of both of the I-beam main frames are fixedly fitted with support legs.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the overall stability of the equipment is ensured by the I-beam main frame, the crossbeam connecting the two I-beam main frames in the middle is used for stability, and the connecting plate and the slot are used to form a complete support frame. The outer walls of the two I-beam main frames are tied with lifting ropes to ensure stable operation after hoisting. The slot in the connecting plate is set in a V-shape to ensure that it can be used for different specifications of rolling mill shafts and bushings. At the same time, a hydraulic jack is hoisted to work with the shaft during the disassembly of the bushing. Through the action of the induction coil, the bushing is rapidly heated by the medium frequency induction temperature control equipment to reduce the interference of the bushing and the shaft. Then, the bushing is pushed out by the hydraulic jack using the tooling made in the process. This utility model provides a medium-frequency induction heating roll sleeve removal device, which improves the success rate of sleeve removal and thus improves work efficiency. Solving technical problems such as heating sleeve removal directly affects the schedule of major repairs. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the fixing structure and support leg assembly of this utility model; Figure 3 This is a three-dimensional schematic diagram of an induction coil.

[0011] In the diagram: 1-I-beam main frame, 2-crossbeam, 3-hydraulic jack, 4-lifting ring, 5-clamping plate, 6-clamping slot, 7-induction coil, 8-fixed structure, 81-connecting plate, 82-bolt, 83-clamping block, 9-infrared monitoring structure, 91-infrared thermal imager, 92-support cylinder, 10-support leg. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-3This utility model provides a medium-frequency induction heating roll shaft disassembly device, including two I-beam main frames 1, which are symmetrically arranged and a crossbeam 2 is fixedly assembled between the two I-beam main frames 1. A clamping plate 5 is fixedly assembled at the end of the two I-beam main frames 1. A clamping groove 6 is opened at the lower end of the inner wall of the clamping plate 5. The inner wall of the clamping groove 6 is fitted with a roll shaft and a bushing, and an induction coil 7 is wound on the outer wall of the roll shaft and the bushing. The induction coil 7 is located on the side of the clamping plate 5 near the I-beam main frame 1. A hydraulic jack 3 is provided at the side end of the crossbeam 2. The piston rod of the hydraulic jack 3 corresponds to the roll shaft. Both the two I-beam main frames 1 and the hydraulic jack 3 are hoisted.

[0014] The overall stability of the equipment is ensured by the I-beam main frame 1. The two I-beam main frames 1 are connected by a stabilizing crossbeam 2 in the middle, which, together with the clamping plate 5 and the clamping groove 6, forms a complete support frame. The outer walls of the two I-beam main frames 1 are tied with lifting ropes to ensure stable operation after hoisting. The clamping groove 6 in the clamping plate 5 is set in a V-shape to ensure that it can be used for different specifications of rolling mill shafts and bushings. At the same time, the hydraulic jack 3 is hoisted to work with the shaft during the disassembly of the bushing. Through the action of the induction coil 7, the bushing is rapidly heated by the medium frequency induction temperature control equipment to reduce the interference fit between the bushing and the shaft. Then, the bushing is pushed out by the hydraulic jack 3 using the tooling made by the machine.

[0015] It also includes two fixed structures 8, which pass through the two I-beam main frames 1 respectively, and the two fixed structures 8 clamp the hydraulic jacks 3. The fixed structure 8 includes a connecting plate 81, which passes through an I-beam main frame 1. A clamping block 83 is fixedly assembled on the inner end of the connecting plate 81. The clamping block 83 is in contact with the outer wall of the hydraulic jack 3. Bolts 82 pass through the surface of the I-beam main frame 1 and are screwed to the connecting plate 81.

[0016] The hydraulic jack 3 is fixed in position by clamping blocks 83 on both sides, and the connecting plate 81 passes through the I-beam main frame 1 on both sides and is fixed with bolts 82 to ensure the support effect of the hydraulic jack 3 and make its working effect better. It is supported and supported by the crossbeam 2, saving manual support.

[0017] It also includes an infrared monitoring structure 9, which is mounted on the surface of one side of the I-beam main frame 1; The infrared monitoring structure 9 includes a support cylinder 92, which is fixedly assembled on the surface of the I-beam main frame 1 on one side. An infrared thermal imager 91 is inserted into the inner wall of the support cylinder 92.

[0018] An infrared thermal imager 91 (accuracy ±2℃) is configured to monitor the temperature distribution on the bushing surface in real time. When the temperature reaches a certain level, the hydraulic jack 3 is turned on, and the induction coil 7 is turned off. The support cylinder 92 facilitates the placement of the infrared thermal imager 91.

[0019] It also includes three lifting rings 4, two of which are fixed to the surfaces of the two I-beam main frames 1 respectively, and the other lifting ring 4 is fixedly assembled to the surface of the hydraulic jack 3.

[0020] The installation of lifting ring 4 allows for better lifting of components and ensures more stable installation between equipment.

[0021] Both I-beam main frames 1 are fixedly fitted with support legs 10 at their lower ends.

[0022] The outrigger 10 serves to support the I-beam main frame 1, providing auxiliary support and ensuring the overall stability of the frame.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for disassembling a medium-frequency induction heating roll shaft, characterized in that: The system includes two I-beam main frames (1), which are symmetrically arranged and a crossbeam (2) is fixedly assembled between them. A clamping plate (5) is fixedly assembled at the ends of the two I-beam main frames (1). A groove (6) is opened at the lower end of the inner wall of the clamping plate (5). A roller shaft and a bushing are sleeved on the inner wall of the groove (6). An induction coil (7) is wound on the outer wall of the roller shaft and the bushing. The induction coil (7) is located on the side of the clamping plate (5) close to the I-beam main frame (1). A hydraulic jack (3) is provided at the side end of the crossbeam (2). The piston rod of the hydraulic jack (3) corresponds to the roller shaft. Both the two I-beam main frames (1) and the hydraulic jack (3) are hoisted.

2. The medium-frequency induction heating roll shaft unsleeving device according to claim 1, characterized in that: It also includes two fixed structures (8), which respectively penetrate the two I-beam main frames (1), and the two fixed structures (8) clamp the hydraulic jack (3). The fixed structure (8) includes a connecting plate (81) that passes through an I-beam main frame (1). A clamping block (83) is fixedly assembled on the inner end of the connecting plate (81). The clamping block (83) is in contact with the outer wall of the hydraulic jack (3). A bolt (82) passes through the surface of the I-beam main frame (1) and is screwed to the connecting plate (81).

3. The medium-frequency induction heating roll shaft unsleeving device according to claim 1, characterized in that: It also includes an infrared monitoring structure (9), which is mounted on the surface of one side of the I-beam main frame (1); The infrared monitoring structure (9) includes a support cylinder (92), which is fixedly assembled on the surface of the I-beam main frame (1) on one side, and an infrared thermal imager (91) is inserted into the inner wall of the support cylinder (92).

4. The medium-frequency induction heating roll shaft unsleeving device according to claim 1, characterized in that: It also includes three lifting rings (4), two of which are fixed to the surfaces of the two I-beam main frames (1) respectively, and the other lifting ring (4) is fixedly assembled to the surface of the hydraulic jack (3).

5. The medium-frequency induction heating roll shaft disassembly device according to claim 1, characterized in that: Both of the I-beam main frames (1) are fixedly fitted with legs (10) at their lower ends.

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