Hydraulic drive type foot roller dismounting tool

Abstract

The utility model belongs to the technical field of metallurgical equipment maintenance, and particularly relates to a hydraulic drive type foot roller dismounting tool. Comprising a workbench, at least three supporting frames are fixed to the workbench, H-shaped rolling wheels are installed on the supporting frames, a sleeve is fixed to the workbench, a rotating rod is connected to the interior of the sleeve in a bearing mode, a hanging wheel is connected to the rotating rod in a sliding mode, an iron chain is fixed to the bottom end of the hanging wheel, a hydraulic cylinder is fixed to the lower portion of the iron chain, and calipers are fixed to the hydraulic cylinder. The eccentric shaft of the foot roller is ejected out through the hydraulic cylinder, manual hammering is not needed, only one person is needed for operation, dangerousness is small, working efficiency is high, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical equipment maintenance, in particular to a hydraulically driven foot roller removal tool. Background Art

[0002] The mold foot roller is a crucial component of the continuous casting mold, typically installed at the bottom. It primarily guides and supports the billet shell, preventing it from bulging or leaking out under the static pressure of the molten steel. To ensure uniform billet dimensions, two to three sets of foot rollers are typically installed at the bottom of the mold. In a billet mold, the foot roller section consists of a roller holder and several foot rollers mounted on the holder. The gap between two opposing foot rollers determines the cross-sectional length of the billet.

[0003] The structure of a foot roller generally includes a shaft seat, a foot roller body, a stopper, and a locking member. The foot roller body consists of a core shaft and a roller sleeve that rotatably sleeves around the core shaft. The shaft seat is provided with a mounting hole and an adjustment hole extending through the side wall of the mounting hole. The stopper is inserted into the adjustment hole and can move along the hole depth, with a blocking surface that abuts the side of the core shaft. The locking member is detachably fixed to the stopper and the core shaft.

[0004] Currently, the foot roller is replaced along with the mold copper tube. This requires two people to remove the foot roller's core shaft: one swinging a sledgehammer while the other holds a chisel. This is inefficient, wastes manpower, and poses a safety hazard. Manually removing the eccentric shaft can damage it, making it unusable and wasteful. Summary of the Invention

[0005] The purpose of the utility model is to provide a hydraulically driven foot roller removal tool to solve the problems existing in the prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A hydraulically driven foot roller removal tool comprises a workbench, at least three support frames are fixed on the workbench, H-shaped rollers are installed on the support frames, a sleeve is fixed on the workbench, a rotating rod is connected to the bearing in the sleeve, a hanging wheel is slidably connected to the rotating rod, an iron chain is fixed to the bottom end of the hanging wheel, a hydraulic cylinder is fixed under the iron chain, and a caliper is fixed on the hydraulic cylinder.

[0008] Furthermore, the rotating rod has an L-shaped structure, the rotating end of the rotating rod is horizontally arranged, two baffles are welded on the upper side of the horizontal end of the rotating rod, and the hanging wheel is located between the two baffles.

[0009] Furthermore, the caliper is in a vertically placed door-shaped structure, a through hole is provided at the top end of the caliper, a strip groove is provided at the bottom end of the caliper, and one end of the strip groove is open.

[0010] Furthermore, the hydraulic cylinder is installed on the top of the caliper, and the output end of the hydraulic cylinder passes through the through hole.

[0011] Furthermore, the support frame is L-shaped, the H-shaped roller is installed on the outer wall of one end of the support frame, the outer wall of the other end of the support frame is fixed on the workbench, and a diagonal brace is welded on the inner wall of the support frame.

[0012] Furthermore, the rolling ends of the H-shaped rollers all face the same center point, and the mounting points of the support frames are located on the same upward-opening semicircle and are evenly distributed.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model uses a hydraulic cylinder to push out the eccentric shaft of the foot roller, without the need for manual hammering, and only requires one person to operate, with low danger, high work efficiency and easy operation.

[0015] 2. The flange of the foot roller is supported by the H-type roller. The foot roller can be rotated at any time during the disassembly process, so that the foot rollers in different directions are in a vertical position, which is easy to operate.

[0016] 3. The hydraulic cylinder is connected by a rotating rod and an iron chain, which can replace manual hand-holding during work, thereby reducing labor intensity. After disassembly, it can be rotated and moved to other positions without taking up space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the utility model when it is working.

[0019] Figure 3 It is a schematic diagram of the structure of the caliper of the present utility model.

[0020] Figure 4 It is a schematic diagram of the installation structure of the H-type roller of the utility model.

[0021] Among them: 1. Workbench; 2. Support frame; 3. H-type roller; 4. Casing; 5. Rotating rod; 6. Hanging wheel; 7. Iron chain; 8. Hydraulic cylinder; 9. Caliper; 10. Through hole; 11. Strip groove; 12. Diagonal brace; 13. Baffle; 14. Foot roller. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figure 1-4As shown, a hydraulically driven foot roller removal tool comprises a workbench 1, to which at least three support frames 2 are fixed, and H-shaped rollers 3 are mounted. A sleeve 4 is fixed to the workbench 1, a rotating rod 5 is connected to a bearing within the sleeve 4, and a hanging wheel 6 is slidably connected to the rotating rod 5. An iron chain 7 is fixed to the bottom end of the hanging wheel 6, and a hydraulic cylinder 8 is fixed below the iron chain 7, and a caliper 9 is fixed to the hydraulic cylinder 8. The workbench 1 mainly serves to fix the support frames 2. In the actual production process, the on-site working conditions can be fully considered. The support frames 2 can be installed on objects such as steel structures and walls that can bear the weight of the foot roller 14. This eliminates the need to manufacture the workbench 1, and existing equipment can be used for installation and fixation. The support frames 2 can be fixed to the workbench 1 by welding, bolting, or other fixing methods. The H-shaped roller 3 is conventional and usually has a mounting base that is fixed to the support frame 2. The sleeve 4 can also be installed according to the on-site working conditions, such as being fixed on one side of the workbench 1 , or it can be not fixed on the workbench 1 if necessary.

[0024] The rotating rod 5 is L-shaped, and the rotating end of the rotating rod 5 is horizontally arranged. Two baffles 13 are welded on the upper side of the horizontal end of the rotating rod 5. The hanging wheel 6 is located between the two baffles 13 to block the sliding of the hanging wheel 6 and prevent it from slipping.

[0025] The caliper 9 is a vertically placed door-shaped structure, with a through hole 10 provided at the top of the caliper 9 and a strip groove 11 provided at the bottom of the caliper 9. One end of the strip groove 11 is open, and the open end of the strip groove 11 is clamped to the shaft end below the foot roller 14.

[0026] The hydraulic cylinder 8 is installed on the top of the caliper 9, and the output end of the hydraulic cylinder 8 passes through the through hole 10. The output end of the hydraulic cylinder 8 is pressed against the shaft end above the foot roller 14.

[0027] The support frame 2 is L-shaped, the H-shaped roller 3 is installed on the outer wall of one end of the support frame 2, the outer wall of the other end of the support frame 2 is fixed on the workbench 1, and a diagonal brace 12 is welded on the inner wall of the support frame 2.

[0028] The rolling ends of the H-type roller 3 all face the same center point, and the installation points of the support frame 2 are located on the same upward-opening semicircle and are evenly distributed, so that the flange of the foot roller 14 can be clamped on the H-type roller 3 from above.

[0029] The working principle of this utility model is:

[0030] During use, the foot roller 14 is lifted horizontally to the support frame 2 by a crane, and the flange of the foot roller 14 is inserted downward from the top of the support frame 2 onto the H-shaped roller 3, so that the foot roller 14 is supported by the H-shaped roller 3. Since the supporting part of the flange of the foot roller 14 is the rolling end of the H-shaped roller 3, the foot roller 14 can rotate. By rotating the foot roller 14, two of the four groups of rollers of the foot roller 14 are vertically distributed. Pull the hydraulic cylinder 8 by hand, and the rotating rod 5 can rotate accordingly, pushing the output end of the hydraulic cylinder 8 against the shaft end above the foot roller 14, start the hydraulic cylinder 8, and after the output end of the hydraulic cylinder 8 is extended, the caliper 9 gradually moves upward, controlling the strip groove 11 of the caliper 9 to clamp the shaft end below the foot roller 14. After the caliper 9 is in place, continue to control the output end of the hydraulic cylinder 8 to extend, thereby pushing out the eccentric shaft of the foot roller 14. After the disassembly of the vertical foot roller 14 is completed, the foot roller 14 is continued to be rotated, so that the horizontal foot roller 14 is rotated to the vertical position, and the disassembly is continued.

[0031] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention.

[0032] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A hydraulically driven foot roller removal tool, characterized in that: It includes a workbench, on which at least three support frames are fixed, H-shaped rollers are installed on the support frames, a sleeve is fixed on the workbench, a rotating rod is connected to the bearing in the sleeve, a hanging wheel is slidably connected to the rotating rod, an iron chain is fixed to the bottom end of the hanging wheel, a hydraulic cylinder is fixed under the iron chain, and a caliper is fixed on the hydraulic cylinder.

2. The hydraulically driven foot roller removal tool according to claim 1, characterized in that: The rotating rod is in an L-shaped structure, the rotating end of the rotating rod is arranged horizontally, two baffles are welded on the upper side of the horizontal end of the rotating rod, and the hanging wheel is located between the two baffles.

3. The hydraulically driven foot roller removal tool according to claim 1, characterized in that: The caliper is in a vertically placed door-shaped structure, a through hole is provided at the top end of the caliper, a strip groove is provided at the bottom end of the caliper, and one end of the strip groove is open.

4. The hydraulically driven foot roller removal tool according to claim 3, characterized in that: The hydraulic cylinder is mounted on the top of the caliper, and the output end of the hydraulic cylinder passes through the through hole.

5. The hydraulically driven foot roller removal tool according to claim 1, characterized in that: The support frame is L-shaped, the H-shaped roller is installed on the outer wall of one end of the support frame, the outer wall of the other end of the support frame is fixed on the workbench, and an oblique brace is welded on the inner wall of the support frame.

6. The hydraulically driven foot roller removal tool according to claim 5, characterized in that: The rolling ends of the H-shaped rollers all face the same center point, and the mounting points of the support frames are located on the same upward-opening semicircle and are evenly distributed.

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