A device for facilitating the extraction and replacement of a wear roller of a shot blasting cabin

Abstract

The utility model discloses a device convenient to draw out and change roll of wear -resisting roll of throwing -ball bin, has bearing crossbeam, and the opposite position department of the left and right two ends bottom of bearing crossbeam is equipped with support gyro wheel subassembly respectively, and support gyro wheel subassembly includes thick plate, gyro wheel support and rolling wheel, and rolling wheel is concave arc surface wheel, and gyro wheel support sets up at the bottom of thick plate, and rolling wheel is placed on gyro wheel support, still be equipped with a through groove on bearing crossbeam, and the through groove is horizontally arranged on bearing crossbeam along the length direction, and still has two hoisting screw rods in the through groove, and two positioning nuts are equipped on each hoisting screw rod, and one piece of bearing plate is horizontally equipped between the lower part of two hoisting screw rods, the device is a kind of tool equipment of complete self-design, originality and practicality are strong, and it is designed specially for narrow space roll operation, and it has strong pertinence.

Description

Technical Field

[0001] This utility model relates to the field of steel manufacturing equipment technology, and in particular to a device that facilitates the removal and replacement of wear-resistant rollers from a shot blasting chamber. Background Technology

[0002] Shot blasting machines are commonly used in domestic steel mills for cleaning the surface of steel plates. A shot blasting machine mainly consists of a blasting head, conveyor rollers, a screw conveyor, a dust removal system, a cleaning system, and a bucket elevator. Shot is fed into the blasting chamber through the blasting head and strikes the steel plate to remove iron oxide scale from its surface. The shot blasting chamber is an enclosed space with an inspection door on one side. Inside, there are the blasting head (shot output end), shot baffle, wear-resistant rollers, and wear-resistant sealing plates. Because it must withstand the prolonged impact of high-speed shot, the sealing materials inside the chamber and components such as the wear-resistant rollers of the steel plate conveyor must possess sufficient strength and durability. The excellent sealing performance of the shot blasting chamber ensures that shot does not leak out during the blasting process, while also reducing noise pollution and dust emission. Shot blasting is carried out in a closed environment (the shot blasting chamber), reducing interference from external factors and improving processing quality and efficiency.

[0003] Once the wear-resistant rollers inside the shot blasting chamber are damaged, they need to be promptly removed from the chamber for repair or replacement to ensure shot blasting quality. Since the shot blasting chamber is a closed space, and the wear-resistant rollers themselves are relatively long and heavy, replacing a single roller currently takes about 7 man-hours. This is time-consuming and labor-intensive, and the confined working space and insufficient lighting inside the chamber pose a risk of accidents to workers. Therefore, designing a convenient tool to pull the damaged wear-resistant rollers out of the enclosed and confined shot blasting chamber for replacement and repair would be an excellent solution. Utility Model Content

[0004] The purpose of this utility model is to provide a device that facilitates the removal and replacement of the wear-resistant roller in the shot blasting chamber, in response to the above-mentioned situation. This device is a completely self-designed tool with strong originality and practicality. Moreover, it is specifically designed for roller replacement operations in confined spaces and has a high degree of relevance.

[0005] The specific solution of this utility model is as follows: a device for easily removing and replacing the wear-resistant roller in a shot blasting chamber, comprising a load-bearing crossbeam, with supporting roller assemblies at opposite positions on the bottom of the left and right ends of the load-bearing crossbeam, each supporting roller assembly including a thickened plate, a roller bracket, and a rolling wheel, the rolling wheel being a concave arc-shaped surface wheel, the thickened plate being fixed to the bottom of the load-bearing crossbeam, the roller bracket being located at the bottom of the thickened plate, and the rolling wheel being mounted on the roller bracket; a through groove is also provided on the load-bearing crossbeam, the through groove being arranged laterally along the length of the load-bearing crossbeam, and two lifting screws being vertically inserted into the through groove, each lifting screw being equipped with two positioning nuts, one positioning nut being placed on the upper end face of the through groove to achieve lifting and positioning of the lifting screw, and the other positioning nut being placed at the lower part of the lifting screw, a support plate being installed across the lower part of the two lifting screws, the two ends of the support plate being respectively inserted through the two lifting screws and supported and fixed by corresponding positioning nuts.

[0006] Furthermore, in this utility model, the middle part of the support plate is a concave arc-shaped plate, and the two ends of the support plate are respectively set as horizontal plates.

[0007] Furthermore, the load-bearing crossbeam described in this utility model is made of a wide-body rectangular channel steel structure, and weight-reducing notches are provided on the flanges at both ends of the load-bearing crossbeam.

[0008] Furthermore, in this utility model, each roller bracket is provided with two rollers arranged side by side, and the two rollers have the same specifications.

[0009] Furthermore, in this invention, the width of the through groove is consistent with the diameter of the lifting screw.

[0010] This utility model has the following beneficial effects:

[0011] 1. This utility model is a highly original design. Although the overall structure is simple, it is highly practical and can help maintenance personnel quickly remove the damaged wear-resistant roller from the shot blasting chamber, thus greatly improving the roller replacement efficiency.

[0012] 2. This utility model is highly targeted and expandable. It is specifically designed for the roller conveyor extraction operation in a closed and narrow space. It can be applied to similar scenarios, such as when the parts are heavy, the space for maintenance and replacement is small, and the parts need to be extracted outside the warehouse for operation.

[0013] 3. This utility model is applicable to the replacement and maintenance of rollers of different diameters, and has significant practical and promotional value.

[0014] 4. This utility model has a simple and reasonable structure and is easy to operate. In a small space, it is convenient to disassemble and repair the wear-resistant rollers inside the warehouse. It is also convenient to adjust the wear-resistant rollers during installation, which greatly saves labor and time costs. The maintenance time is reduced from 7 hours to 4 hours, which improves maintenance efficiency and reduces the probability of safety accidents. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure from the main view direction of this utility model;

[0016] Figure 2 This is a top view structural diagram of this utility model;

[0017] Figure 3 This is a side view structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the application state of this utility model.

[0019] In the diagram: 1—roller bracket, 2—thickened plate, 3—load-bearing crossbeam, 4—weight reduction notch, 5—arc plate, 6—positioning nut, 7—horizontal plate, 8—lifting screw, 9—rolling wheel, 10—through groove, 11—shot blasting chamber, 12—undamaged roller, 13—damaged roller. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] See Figures 1-3 This utility model relates to a device for easily removing and replacing the wear-resistant roller in a shot blasting chamber. It features a load-bearing crossbeam 3, with supporting roller assemblies located at opposite positions on the bottom of its left and right ends. Each supporting roller assembly includes a thickened plate 2, a roller bracket 1, and rolling wheels 9. The rolling wheels are concave arc-shaped surface wheels. The thickened plate is fixed to the bottom of the load-bearing crossbeam, the roller bracket is located at the bottom of the thickened plate, and the rolling wheels are mounted on the roller bracket. A through groove 10 is also provided on the top of the load-bearing crossbeam. The through-slot is arranged horizontally along its length on the load-bearing crossbeam. Two lifting screws 8 are vertically inserted into the through-slot, each screw having two positioning nuts 6. One positioning nut is placed on the upper surface of the through-slot to position the lifting screw, and the other is placed on the lower part of the screw. A support plate is horizontally mounted between the lower parts of the two screws, with both ends of the support plate threaded onto the two screws and supported and fixed by corresponding positioning nuts. Further, in this embodiment, the middle part of the support plate is a concave arc-shaped plate 5, and both ends are horizontal plates 7. Further, the load-bearing crossbeam in this invention is made of a wide-body rectangular channel steel structure, and weight-reducing notches 4 are provided on the flanges at both ends of the crossbeam. Further, in this invention, each roller bracket has two rollers arranged side-by-side, and the two rollers are of the same specification. Furthermore, in this invention, the width of the through groove is consistent with the diameter of the lifting screw.

[0023] In actual operation, this utility model is implemented as follows:

[0024] Step 1: Power outage and signage are hung by all three parties. The wear-resistant roller that needs to be replaced, namely the motor, cover, bearing seat, etc. at both ends of the damaged roller 13, is disassembled. All parts on the wear-resistant roller shaft are completely disassembled.

[0025] Step 2: Set up a lifting point on the outside of the shot blasting machine to lift the wear-resistant roller. Inside the shot blasting chamber 11, use a special roller changing device, namely the device of this utility model, to fix the damaged roller. Use a crane, hoist, and wire rope to pull the damaged roller outward from the outside, and use manpower to push the damaged roller outward from the inside until the wear-resistant roller is moved out of the chamber.

[0026] Step 3: Secure the new wear-resistant roller with an overhead crane and wire rope, paying attention to the direction of the roller track. The maintenance personnel on both the inner and outer sides work together to move the roller track into the warehouse. Every time the roller track is moved a certain distance, the maintenance personnel inside the warehouse must adjust the roller changing device of this utility model until the new wear-resistant roller is moved to the installation position.

[0027] Step 4: Reinstall the motor, cover, bearing housing, and other components at both ends of the wear-resistant roller;

[0028] Step 5: Remove the label, power on and test run. If the roller conveyor drives smoothly without any abnormal noise, the maintenance is complete.

[0029] In the above steps, when fixing the damaged roller with the device of this utility model, the rolling wheels on both sides of the load-bearing beam are first placed on the undamaged rollers 12 on both sides of the damaged roller. Then, the arc-shaped support plate below supports the damaged roller, and both sides are fixed to the lifting screws by positioning nuts. The upper end of the lifting screws is also raised to a certain height by rotating the positioning nuts. Using the support of the rolling wheels on both sides, the damaged roller is lifted upwards to a certain height. This height does not need to be too large, just a slight lift is enough. This way, when the roller is pulled or pushed outwards later, it can be moved well. Otherwise, it would be difficult to pull the damaged roller due to its own weight. When replacing the new roller, the device of this utility model is operated in the same way, lifting the roller only slightly.

[0030] This utility model is a highly original design. While its overall structure is simple, it is highly practical, effectively helping maintenance personnel quickly remove damaged wear-resistant rollers from the shot blasting chamber, significantly improving roller replacement efficiency. This utility model is highly targeted and expandable. It is specifically designed for roller removal operations in enclosed, confined spaces, and can be applied to similar scenarios where components are heavy, maintenance and replacement space is limited, and components need to be removed from the chamber for operation. This utility model is applicable to the replacement and maintenance of rollers of different diameters, demonstrating significant practical and promotional value.

Claims

1. A device for easily removing and replacing the wear-resistant roller in a shot blasting chamber, characterized in that: The device has a load-bearing crossbeam. Supporting roller assemblies are located at opposite bottom positions on both the left and right ends of the crossbeam. Each supporting roller assembly includes a thickened plate, a roller bracket, and a rolling wheel. The rolling wheel is a concave arc-shaped surface wheel. The thickened plate is fixed to the bottom of the load-bearing crossbeam, the roller bracket is located at the bottom of the thickened plate, and the rolling wheel is mounted on the roller bracket. A through slot is also provided on the load-bearing crossbeam, extending horizontally along its length. Two lifting screws are vertically inserted into the through slot. Each lifting screw is equipped with two positioning nuts. One positioning nut is placed on the upper end of the through slot to position the lifting screw, and the other positioning nut is placed at the lower part of the lifting screw. A support plate is horizontally mounted between the lower parts of the two lifting screws. The two ends of the support plate are respectively threaded onto the two lifting screws and supported and fixed by corresponding positioning nuts.

2. The device for facilitating the extraction and replacement of the wear-resistant roller in a shot blasting chamber according to claim 1, characterized in that: The middle part of the support plate is a concave arc-shaped plate, and the two ends of the support plate are respectively set as horizontal plates.

3. The device for facilitating the extraction and replacement of the wear-resistant roller in a shot blasting chamber according to claim 1, characterized in that: The load-bearing crossbeam is made of a wide rectangular channel steel structure, and weight-reducing notches are provided on the flanges at both ends of the load-bearing crossbeam.

4. The device for facilitating the extraction and replacement of the wear-resistant roller in a shot blasting chamber according to claim 1, characterized in that: Each roller bracket has two rollers arranged side by side, and the two rollers are of the same specification.

5. The device for facilitating the extraction and replacement of the wear-resistant roller in a shot blasting chamber according to claim 1, characterized in that: The width of the through groove is consistent with the diameter of the lifting screw.

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