Auxiliary lifting appliance for overhauling roughing mill

Abstract

The utility model belongs to the technical field of roughing mill maintenance equipment, and particularly relates to a roughing mill maintenance auxiliary lifting appliance which comprises a lifting frame, a working platform and a base, the lifting frame comprises a cantilever beam, a rotating arm seat and a rack, the upper portion of the rotating arm seat is formed by splicing plates, the lower portion of the rotating arm seat is a sleeve, and the upper portion and the lower portion of the rotating arm seat are welded. The upper portion of the rotating arm seat is connected with the middle of the cantilever beam through a hydraulic cylinder, a sleeve on the lower portion of the rotating arm seat is assembled with a suspension arm mandrel through a tapered roller bearing and a radial bearing, the bottom end of the suspension arm mandrel is locked and fixed in a mounting hole of a rack through a round nut, and an I-shaped steel limiting wheel set is installed on one side of the bottom of the suspension arm mandrel. An oil tank of a hydraulic system, a control valve, a motor and an electric control box are arranged in a box body of the machine frame, and the I-shaped steel limiting wheel set and the electric walking wheel set are both matched with the top end of the working platform. The lifting appliance is simple in structure, shortens the maintenance time of the roughing mill equipment and improves the safety in the maintenance process.

Description

Technical Field

[0001] The utility model belongs to the technical field of roughing mill maintenance equipment, in particular to an auxiliary lifting device for roughing mill maintenance. Background Art

[0002] The lower part of the hot rolling roughing mill is equipped with mechanical components such as ventilation ducts, electrical component boxes, hydraulic pipelines, heat insulation panels, steel rolling main motors, couplings, etc. The components that need to be replaced during maintenance are heavy and inconvenient to remove. They need to be lifted out by the crane hook on the top of the factory building. The crane hook cannot enter the lower part of the ventilation duct. The ground pipes are crisscrossed and the installation space of the equipment components is narrow, which is not convenient for disassembly and assembly of maintenance components. The replacement components are difficult to move to the position where the crane can lift them. Utility Model Content

[0003] The utility model aims to provide an auxiliary lifting device for the maintenance of a roughing mill, which solves the problem that a replaced component is difficult to move to a position where it can be lifted by a crane.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The top end of the lifting link is connected with the lifting link of the lifting link, and the bottom end of the lifting link is connected with the lifting link of the lifting link through the hydraulic cylinder to the hydraulic cylinder. The hydraulic cylinder is connected with the hydraulic cylinder to the hydraulic cylinder. The hydraulic cylinder is connected with the hydraulic cylinder to the hydraulic cylinder.

[0006] Preferably, the working platform includes columns, I-beam guide rails and plane guide rails, the columns are connected to the base by connecting bolts, wherein a cross beam is provided on the top of two adjacent columns, the two cross beams are connected by a longitudinal beam, the I-beam guide rail is fixed on one cross beam, and the plane guide rail is fixed on the other cross beam, the I-beam limiting wheel group is matched with the I-beam guide rail, and the electric walking wheel group is matched with the plane guide rail.

[0007] Preferably, the base is fixed to an embedded part under the ground.

[0008] Preferably, the base includes an upper panel and a lower panel, support columns are vertically welded above both sides of the lower panel, the upper panel is welded to the top of the support columns, and reinforcing plates are welded between the support columns.

[0009] Beneficial effects achieved by this utility model:

[0010] The spreader has a simple structure and is easy to operate and maintain. The combination of the spreader and the work platform enables the spreader to be moved and the load to be lifted. The components that need to be replaced are moved to a position where the crane can lift them, making it easy to disassemble and replace components, shortening the maintenance time of the roughing mill equipment, improving the safety of the maintenance process, reducing the maintenance workload, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is the main view of the hanger in the utility model;

[0013] Figure 3 It is a left side view of the hanger in the utility model;

[0014] Figure 4 The three views of the working platform in this utility model;

[0015] Figure 5 It is the front view and left view of the base in the utility model;

[0016] Figure 6 This is a diagram of the state of the hanger hook of the utility model when the object is hung

[0017] Figure 7 This is a state diagram of the hanger of the utility model when lifting an object.

[0018] Explanation of the accompanying drawings: 1. Hanger; 101. Cantilever beam; 102. Hydraulic cylinder; 103. Swing arm seat; 104. Boom core shaft; 105; Tapered roller bearing; 106. Centripetal bearing; 107. I-beam limiting wheel set; 108. Electric travel wheel set; 109. Frame; 110. Fuel tank; 111. Control system; 2. Working platform; 201. I-beam guide rail; 202. Plane guide rail; 203. Connecting bolt; 204. Column; 205. Crossbeam; 206. Longitudinal beam; 3. Base; 301. Upper panel; 302. Lower panel; 303. Support column; 304. Reinforcement plate; 4. Embedded parts. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is described clearly and completely below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-3As shown, an auxiliary hanger for roughing mill maintenance includes a hanger 1 and a working platform 2. The hanger 1 includes a cantilever beam 101, a swing arm seat 103 and a frame 109. The upper part of the swing arm seat 103 is spliced ​​by plates, and the lower part is a sleeve. The upper and lower parts are welded together. The front end of the cantilever beam 101 is equipped with a hook, and the tail is hinged to the top of the upper part of the swing arm seat 103. The upper part of the swing arm seat 103 is connected to the middle part of the cantilever beam 101 through a hydraulic cylinder 102. The sleeve at the lower part of the swing arm seat 103 is assembled with the boom core shaft 104 through a tapered roller bearing 105 and a radial bearing 106. The bottom end of the boom core shaft 104 is locked and fixed to the mounting frame 109 by a round nut. In the hole, the frame 109 is horizontally L-shaped, with an I-beam limiting wheel group 107 installed on one side of the bottom and an electric travel wheel group 108 installed on the other side. The box of the frame 109 is equipped with an oil tank 110 and a control system 111 of the hydraulic system. The control system 111 includes a control valve, an electric motor and an electric control box. The I-beam limiting wheel group 107 and the electric travel wheel group 108 are both fitted with the top of the working platform 2; the cantilever beam is swung up and down by the hydraulic cylinder to complete the lifting of heavy objects; the arm seat and the arm core shaft are assembled by tapered roller bearings and radial bearings to achieve 180° range positioning and lifting, and the heavy object rotates around the vertical axis to expand the use range of the sling.

[0021] A further embodiment of the present invention is as follows: Figure 1 、 4 As shown, the working platform 2 includes columns 204, I-beam guide rails 201 and plane guide rails 202. The columns 204 are connected to the base 3 by connecting bolts 203, wherein a crossbeam 205 is provided on the top of two adjacent columns 204, and the two crossbeams 205 are connected by a longitudinal beam 206. The I-beam guide rail 201 is fixed on one crossbeam 205, and the plane guide rail 202 is fixed on the other crossbeam 205. The I-beam limiting wheel group 107 is matched with the I-beam guide rail 201, and the electric travel wheel group 108 is matched with the plane guide rail 202. The base 3 is fixed with the embedded part 4 by anchor bolts; the working platform and the I-beam guide rail are kept level by the foundation transition column, the I-beam guide rail is combined with the I-beam limiting wheel group, and the plane guide rail is combined with the electric travel wheel group to keep it level and capable of carrying heavy objects and walking, saving time and effort.

[0022] A further embodiment of the present invention is as follows: Figure 5 As shown, the base 5 includes an upper panel 301 and a lower panel 302, support columns 303 are vertically welded above both sides of the lower panel 302, the upper panel 301 is welded to the top of the support columns 303, and reinforcement plates 304 are welded between the support columns 303; the nominal height size of the foundation transition column is determined according to the height difference between the lifting work platform and the infrastructure foundation plane, and the parallelism of the horizontal plane of the working platform is fine-tuned using inclined wedge blocks.

[0023] Working principle:

[0024] When the spreader is working, the base 3 is installed on the ground and fixed to the embedded parts 4 under the ground through anchor bolts. The working platform 2 is fixed on the top through connecting bolts 203. The plane guide rail 202 on the working platform 2 is matched with the electric walking wheel group 108 of the hanger. The I-beam guide rail 201 on the working platform is matched with the I-beam limiting wheel group 107. The motor drives the hanger 1 to move near the hanging object. The hydraulic cylinder 102 drives the rotating cantilever beam 101 to align the hook with the hanging object, and the hanging object is hung on the hook of the cantilever beam 101. Figure 6 As shown, the hydraulic cylinder 102 lifts the cantilever beam 101 to lift the hanging object to a suitable height, as shown in FIG. Figure 7 As shown, after avoiding obstacles around the hanging object, the cantilever beam 101 is rotated to adjust the direction of the hanging object, and finally the hanger 1 is moved through the I-beam guide rail 201 and the plane guide rail 202 on the working platform 2, and the hanging object on the hanger 1 is moved out of the working platform 2 and lifted by the crane, so that the equipment below the working platform 2 can be quickly and safely replaced and repaired.

Claims

1. A roughing mill maintenance auxiliary hanger, characterized in that: The invention comprises a hanger (1), a working platform (2) and a base (3), wherein the hanger (1) comprises a cantilever beam (101), a rotating arm seat (103) and a frame (109), wherein the upper portion of the rotating arm seat (103) is spliced ​​by plates, the lower portion is a sleeve, and the upper and lower portions are welded together, the front end of the cantilever beam (101) is equipped with a hook, the tail end is hinged to the top end of the upper portion of the rotating arm seat (103), the upper portion of the rotating arm seat (103) is connected to the middle portion of the cantilever beam (101) through a hydraulic cylinder (102), and the sleeve at the lower portion of the rotating arm seat (103) and the boom core shaft (104) are assembled through a tapered roller bearing (105) and a radial bearing (106). The bottom end of the boom core shaft (104) is fixed in the mounting hole of the frame (109) by a round nut. The frame (109) is in a horizontal L-shape. An I-beam limiting wheel group (107) is installed on one side of the bottom, and an electric travel wheel group (108) is installed on the other side. The box body of the frame (109) is equipped with an oil tank (110) and a control system (111) of the hydraulic system. The control system (111) includes a control valve, an electric motor and an electric control box. The I-beam limiting wheel group (107) and the electric travel wheel group (108) are both fitted with the top of the working platform (2). The bottom end of the working platform (2) is fixed to the top of the base (3).

2. The auxiliary lifting device for roughing mill maintenance according to claim 1, characterized in that: The working platform (2) comprises a column (204), an I-beam guide rail (201) and a plane guide rail (202), wherein the column (204) is connected to the base (3) via a connecting bolt (203), wherein a crossbeam (205) is provided at the top of two adjacent columns (204), and the two crossbeams (205) are connected via a longitudinal beam (206), one crossbeam (205) is fixed to the I-beam guide rail (201), and the other crossbeam (25) is fixed to the plane guide rail (202), the I-beam limiting wheel group (107) is matched with the I-beam guide rail (201), and the electric travel wheel group (108) is matched with the plane guide rail (202).

3. The auxiliary lifting device for roughing mill maintenance according to claim 2, characterized in that: The base (3) is fixed to the embedded part (4) under the ground.

4. The auxiliary lifting device for roughing mill maintenance according to claim 3, characterized in that: The base (3) comprises an upper panel (301) and a lower panel (302), support columns (303) are vertically welded above both sides of the lower panel (302), the top ends of the support columns (303) are welded to the upper panel (301), and reinforcing plates (304) are welded between the support columns (303).

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