Special lifting appliance for three-roller reducing and sizing rolling mill

Abstract

The utility model discloses a special lifting appliance for a three-roller reducing and sizing rolling mill, and relates to the technical field of rolling mill installation. The turnover device comprises a cross beam, a group of suspension arms, a group of lifting lugs, a locking device and a turnover device, the cross beam is of an I-shaped steel structure, a lifting lug body is arranged in the center of the top of the cross beam, each suspension arm comprises a group of side plates, a group of rollers are arranged on the inner sides of the side plates, the two side plates are arranged on the front side and the rear side of the cross beam respectively, and the rollers roll along a beam groove of the cross beam. The lifting device can be matched with the rolling mill through the lifting arms and the lifting lugs, the two lifting arms can be controlled to be clamped or released through the design of the locking device, the rolling mill can be controlled to be subjected to 360-degree overturning adjustment through the design of the overturning device, the rolling mill can be placed horizontally or vertically according to actual requirements, and the rolling mill is convenient to use. The designed novel lifting appliance can replace a steel wire rope to lift the rolling mill, the lifting safety is improved, meanwhile, the rolling mill is convenient and labor-saving to turn over, the working efficiency is improved, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling mill installation, and particularly relates to a special lifting tool for a three-roll reducing and sizing mill. Background Technique

[0002] For a three-roll reducing and sizing mill, when assembling and using the rolling mill, it is necessary to lift the rolling mill and flip it according to actual needs to place it horizontally or vertically.

[0003] However, the existing lifting of rolling mills has the following problems:

[0004] 1) The original method used wire ropes to lift the rolling mill. The wire ropes were prone to deformation and broken wires, posing a safety hazard.

[0005] 2) When using wire ropes to lift the rolling mill, it was inconvenient to flip the rolling mill, with low work efficiency and certain difficulty. Content of the Utility Model

[0006] The purpose of the utility model is to provide a special lifting tool for a three-roll reducing and sizing mill. Through the cooperation of the lifting arm and the lifting lug with the rolling mill, and through the design of the locking device, the clamping or releasing of the two lifting arms can be controlled, thereby realizing the connection between the lifting tool and the rolling mill. Through the design of the flipping device, the rolling mill can be controlled to perform a 360-degree flipping adjustment, and the rolling mill can be placed horizontally or vertically according to actual needs. The designed new lifting tool can replace the wire rope to lift the rolling mill, avoid the deformation and broken wires of the wire rope, improve the safety of lifting, and at the same time, it is convenient and labor-saving to flip the rolling mill, improve work efficiency, and reduce work intensity.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model is a special lifting tool for a three-roll reducing and sizing mill, including a cross beam, a group of lifting arms, a group of lifting lugs, a locking device, and a flipping device;

[0009] The cross beam is of I-beam steel structure, and a lifting lug body is arranged at the center of the top of the cross beam;

[0010] The lifting arm includes a group of side plates, a group of rollers are arranged inside the side plates, the two side plates are respectively arranged on the front side and the rear side of the cross beam, the rollers roll along the beam groove of the cross beam, a column is fixed on the outside between the two side plates, and a long thread sleeve is fixed between the two side plates;

[0011] The lifting lug includes a cross arm, the cross arm is rotationally connected to the bottom end of the column through a slewing mechanism, and lifting lug end rods are fixed at both ends of the side of the cross arm away from the column;

[0012] The locking device includes a double-threaded lead screw and a chain hoist;

[0013] The double-threaded lead screw is horizontally arranged directly below the cross beam. Both ends of the double-threaded lead screw are connected to the bottom ends of both sides of the cross beam through bearing seats. The long threaded sleeves on the two lifting arms are respectively threadedly connected to the two threaded sections of the double-threaded lead screw. The chain hoist is connected to one end of the double-threaded lead screw.

[0014] The flipping device includes a speed reducer. The speed reducer is fixed to the outer side of the column away from the chain hoist through a bracket. The input end of the speed reducer is connected with a gear-chain mechanism, and the output end of the speed reducer is connected with an upper gear.

[0015] A lower gear is fixed to the outer side of the slewing mechanism on the column close to the speed reducer. A tooth chain is drivingly connected between the upper gear and the lower gear.

[0016] Further, a set of limiting members are fixed to both ends of the cross beam. The two limiting members are respectively fixed in the beam grooves on both sides of the cross beam.

[0017] Further, limiting edges are fixed to the top of the cross beam at positions on both sides of the lifting lug body. Limiting openings for cooperating with the side plates are provided at the bottom ends of both ends of the limiting edges.

[0018] Further, the gear-chain mechanism includes a driving gear and a long chain. The driving gear is fixed to the input end of the speed reducer. One end of the long chain is meshed with the driving gear, and the other end of the long chain is a free end.

[0019] Further, a protective cover body is fixed to the front side of the speed reducer. The driving gear and the top end of the long chain are both located inside the protective cover body.

[0020] Further, the bracket includes a mounting seat. The mounting seat is fixed to the outer side of the column through a fixed beam. The speed reducer is fixed to the bottom of the mounting seat.

[0021] Further, first reinforcing ribs are fixed to the top and bottom between the fixed beam and the column, and second reinforcing ribs are fixed to the front side and the rear side between the fixed beam and the mounting seat.

[0022] The utility model has the following beneficial effects:

[0023] The utility model can cooperate with a rolling mill through the lifting arms and the lifting lugs. Through the design of the locking device, the clamping or releasing of the two lifting arms can be controlled, so as to realize the connection between the lifting tool and the rolling mill. Through the design of the flipping device, the rolling mill can be controlled to perform a 360-degree flipping adjustment, and the rolling mill can be placed flat or upright according to actual needs. The designed new lifting tool can replace the steel wire rope to hoist the rolling mill, avoid the deformation and broken wires of the steel wire rope, improve the safety of hoisting, and at the same time, it is convenient and labor-saving to flip the rolling mill, improve the work efficiency, and reduce the work intensity.

[0024] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 FIG. is a schematic structural diagram of a special lifting tool for a three-roll reducing and sizing mill of the present utility model;

[0027] Figure 2 is Figure 1 a partial enlarged view of A in;

[0028] Figure 3 is Figure 1 a partial enlarged view of B in;

[0029] Figure 4 is a schematic structural diagram of the connection between the lifting arm and the double-threaded lead screw;

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - cross beam, 2 - lifting arm, 3 - lifting lug, 4 - locking device, 5 - flipping device, 101 - limiting member, 102 - limiting edge, 103 - limiting opening, 104 - lifting lug body, 201 - side plate, 202 - roller, 203 - column, 204 - long threaded sleeve, 205 - lower gear, 206 - tooth chain, 301 - cross arm, 302 - slewing mechanism, 303 - lifting lug end rod, 401 - double-threaded lead screw, 402 - chain hoist, 501 - reducer, 502 - upper gear, 503 - driving gear, 504 - long chain, 505 - shield body, 506 - mounting seat, 507 - fixed beam, 508 - first reinforcing rib, 509 - second reinforcing rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0033] Please refer to Figures 1-4As shown in the figure, the utility model relates to a special lifting device for a three-roll reducing and sizing mill, which comprises a cross beam 1, a group of lifting arms 2, a group of lifting lugs 3, a locking device 4 and a turning device 5;

[0034] The cross beam 1 is of I-beam steel structure, and a lifting lug body 104 is arranged at the center of the top of the cross beam 1;

[0035] The lifting arm 2 comprises a group of side plates 201, a group of rollers 202 are arranged on the inner sides of the side plates 201, the two side plates 201 are respectively arranged on the front side and the rear side of the cross beam 1, the rollers 202 roll along the beam grooves of the cross beam 1, a column 203 is fixed on the outer side between the two side plates 201, and a long threaded sleeve 204 is fixed between the two side plates 201;

[0036] The lifting lug 3 comprises a cross arm 301, the cross arm 301 is rotationally connected with the bottom end of the column 203 through a rotary mechanism 302, and lifting lug end rods 303 are fixed at both ends of one side surface of the cross arm 301 far away from the column 203;

[0037] The locking device 4 comprises a double-threaded lead screw 401 and a chain hoist 402;

[0038] The double-threaded lead screw 401 is horizontally arranged directly below the cross beam 1, both ends of the double-threaded lead screw 401 are connected with the bottom ends of both ends of the cross beam 1 through bearing seats, the long threaded sleeves 204 on the two lifting arms 2 are respectively in threaded connection with the two threaded sections of the double-threaded lead screw 401, and the chain hoist 402 is connected to one end of the double-threaded lead screw 401;

[0039] The turning device 5 comprises a speed reducer 501, the speed reducer 501 is fixed on the outer side of the column 203 far away from the chain hoist 402 through a bracket, the input end of the speed reducer 501 is connected with a gear and chain mechanism, and the output end of the speed reducer 501 is connected with an upper gear 502;

[0040] On the outer side of the rotary mechanism 302 on the column 203 close to the speed reducer 501, a lower gear 205 is fixed, and a toothed chain 206 is in transmission connection between the upper gear 502 and the lower gear 205.

[0041] Among them, as Figure 1 and Figure 3 shown, a group of limit members 101 are fixed at both ends of the cross beam 1, and the two limit members 101 are respectively fixed in the beam grooves on both sides of the cross beam 1.

[0042] Among them, as Figures 1-2 shown, limit edges 102 are fixed at positions on both sides of the lifting lug body 104 at the top of the cross beam 1, and limit openings 103 for cooperating with the side plates 201 are arranged at the bottoms of both ends of the limit edges 102.

[0043] Among them, as Figure 1As shown, the gear chain mechanism includes a driving gear 503 and a long chain 504. The driving gear 503 is fixed to the input end of the speed reducer 501. One end of the long chain 504 is engaged with the driving gear 503, and the other end of the long chain 504 is a free end.

[0044] As shown in Figure 1 a protective cover body 505 is fixed to the front side of the speed reducer 501, and both the driving gear 503 and the top end of the long chain 504 are located inside the protective cover body 505.

[0045] As shown in Figure 1 the bracket includes a mounting seat 506. The mounting seat 506 is fixed to the outside of the column 203 through a fixed beam 507, and the speed reducer 501 is fixed to the bottom of the mounting seat 506.

[0046] As shown in Figure 1 and Figure 3 first reinforcing ribs 508 are fixed to both the top and bottom between the fixed beam 507 and the column 203, and second reinforcing ribs 509 are fixed to both the front side and the rear side between the fixed beam 507 and the mounting seat 506.

[0047] The working principle of the present utility model is as follows: Move this lifting tool above the rolling mill. After the lifting lug end rod 303 is engaged with the lifting hole of the rolling mill, the double-threaded lead screw 401 is driven to rotate by the chain hoist 402. The cooperation between the double-threaded lead screw 401 and the long threaded sleeve 204 can control the relative movement of the two lifting arms 2, so as to clamp or loosen the rolling mill, and thus the rolling mill can be lifted. When it is necessary to flip the rolling mill, the rotation of the cross arm 301 at one end can be controlled through the drive of the flipping device 5, so as to drive the entire rolling mill to flip, and the rolling mill can be placed vertically or horizontally according to needs.

[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A special lifting tool for a three-roll reducing and sizing mill, characterized in that: It comprises a crossbeam (1), a set of lifting arms (2), a set of lifting ears (3), a locking device (4) and a turning device (5); The crossbeam (1) is an I-beam structure, and a lifting ear (104) is provided at the center of the top of the crossbeam (1); The boom (2) comprises a group of side plates (201), a group of rollers (202) are arranged inside the side plates (201), the two side plates (201) are respectively arranged on the front side and the rear side of the cross beam (1), the rollers (202) roll along the beam groove of the cross beam (1), a column (203) is fixed on the outer side between the two side plates (201), and a long threaded sleeve (204) is fixed between the two side plates (201); The lifting lug (3) comprises a horizontal arm (301), the horizontal arm (301) is rotatably connected to the bottom end of the column (203) via a slewing mechanism (302), and both ends of the horizontal arm (301) away from a side of the column (203) are fixed with lifting lug end rods (303); The locking device (4) comprises a double-threaded lead screw (401) and a chain hoist (402); The double-threaded lead screw (401) is horizontally arranged directly below the cross beam (1), and the two ends of the double-threaded lead screw (401) are connected to the bottom of the two ends of the cross beam (1) through bearing seats, and the long threaded sleeves (204) on the two suspension arms (2) are respectively threadedly connected to the two threaded sections of the double-threaded lead screw (401), and the chain hoist (402) is connected to one end of the double-threaded lead screw (401); The turning device (5) comprises a reducer (501), the reducer (501) being fixed to the outside of a column (203) away from the chain hoist (402) through a bracket, the input end of the reducer (501) being connected to a gear chain mechanism, and the output end of the reducer (501) being connected to an upper gear (502); A lower gear (205) is fixed on the outer side of the rotary mechanism (302) on the column (203) close to the reducer (501), and a toothed chain (206) is connected between the upper gear (502) and the lower gear (205).

2. The special sling for a three-roll reducing and sizing mill according to claim 1, wherein, A set of limiting members (101) is fixed at both ends of the cross beam (1), and the two limiting members (101) are respectively fixed in beam grooves on both sides of the cross beam (1).

3. The special sling for a three-roll reducing and sizing mill according to claim 1, characterized in that, The top of the crossbeam (1) and the positions located on both sides of the ear body (104) are fixed with limiting edges (102), and the bottoms of both ends of the limiting edges (102) are provided with limiting openings (103) that cooperate with the side plates (201).

4. The special lifting tool for a three-roll reducing and sizing mill according to claim 1, characterized in that The gear chain mechanism comprises a driving gear (503) and a long chain (504), wherein the driving gear (503) is fixed to the input end of the reducer (501), one end of the long chain (504) is meshed with the driving gear (503), and the other end of the long chain (504) is a free end.

5. The special sling for a three-roll reducing and sizing mill according to claim 4, characterized in that, A protective cover (505) is fixed on the front side of the speed reducer (501), and the top ends of the driving gear (503) and the long chain (504) are both located inside the protective cover (505).

6. The special sling for a three-roll reducing and sizing mill according to claim 1, characterized in that The bracket includes a mounting base (506), the mounting base (506) is fixed to the outside of the column (203) through a fixing beam (507), and the speed reducer (501) is fixed to the bottom of the mounting base (506).

7. The special sling for a three-roll reducing and sizing mill according to claim 6, characterized in that, First reinforcing ribs (508) are fixed to both the top and bottom between the fixing beam (507) and the column (203), and second reinforcing ribs (509) are fixed to both the front side and the rear side between the fixing beam (507) and the mounting base (506).

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