A mill tension column adjusting nut and bearing block integrated dismounting tool and method

Abstract

The application discloses a rolling mill tension column adjusting nut and bearing seat integrated dismounting tool and method, relates to the technical field of metallurgical equipment maintenance, and comprises a retaining ring, the top of the retaining ring is provided with a force transmission steel sleeve, both sides of one end of the force transmission steel sleeve are provided with a wry hole, both sides of the top of the force transmission steel sleeve are inserted with a strong pin shaft, both sides of one end of the force transmission steel sleeve are inserted with a crowbar, a plurality of groups of arc protrusions are uniformly arranged on the side of the outer portion of the crowbar close to the force transmission steel sleeve, and both sides of the top of the force transmission steel sleeve are provided with pin shaft holes matched with the strong pin shafts. The application changes the core components by using the scrapped cover and nut, so that the cost tends to be zero, and the double mechanical channel design is adopted, the large torque is loosened by using the circumferential pry hole, the axial thrust is provided by the end face pin shaft, and the integrated operation is adopted, so that the nut dismounting and bearing seat separation are simultaneously completed by using the single tool, and therefore, the operation is simpler.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment maintenance technology, specifically to an integrated disassembly tool and method for the tension column adjusting nut and bearing seat of a rolling mill. Background Technology

[0002] A rolling mill consists of two "square-shaped" frames to house the roll bearing housings and roll adjustment devices. It needs to have sufficient strength and rigidity to withstand the rolling force. The frame types are mainly closed and open. The closed frame is an integral frame with high strength and rigidity, and is mainly used for primary rolling mills and strip rolling mills with large rolling forces.

[0003] During mill maintenance, the space for adjusting nuts is limited, traditional tools cannot effectively apply force, and disassembly takes more than 1 hour per nut. After removing the nut, the tension column and bearing seat are difficult to separate due to misalignment, requiring forceful prying to damage the equipment. In addition, existing hydraulic jacking tools are bulky and cannot be adapted to the narrow frame space. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated disassembly tool and method for the tension column adjusting nut and bearing seat in rolling mills, in order to solve the problems of difficult disassembly and assembly of adjusting nuts under space constraints and interference between the tension column and bearing seat.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated disassembly tool for a rolling mill tension column adjusting nut and bearing seat, comprising a retaining ring, wherein a force transmission steel sleeve is provided on the top of the retaining ring, and pry holes are provided on both sides of one end of the force transmission steel sleeve, and a strong pin is inserted on both sides of the top of the force transmission steel sleeve.

[0006] Among them, pry bars are inserted on both sides of one end of the force transmission steel sleeve, and multiple sets of arc-shaped protrusions are evenly arranged on the outer side of the pry bar near the force transmission steel sleeve.

[0007] As a further embodiment of the present invention: both sides of the top of the force transmission steel sleeve are provided with pin holes that match the strong pin shaft, and the strong pin shaft is inserted and connected to the force transmission steel sleeve through the pin holes.

[0008] As a further embodiment of the present invention: the retaining ring is made by cutting up a scrapped cap.

[0009] As a further embodiment of the present invention: the force transmission steel sleeve is made of discarded adjusting nuts with an outer diameter of Φ280mm and six sets of Φ20mm through holes drilled around the circumference, while a Φ16mm and 20mm deep blind hole is drilled at 180° on the end face.

[0010] As a further embodiment of the present invention: the strong pin shaft is made by turning two M16×60mm bolt rods and removing the threads to retain the smooth rod section.

[0011] As a further aspect of the present invention: the outer diameter of the crowbar on the side closest to the force transmission steel sleeve increases sequentially from left to right.

[0012] As a further embodiment of the present invention: the integrated disassembly method of the rolling mill tension column adjusting nut and bearing seat specifically includes the following steps:

[0013] Step 1: Place the retaining ring onto the tension column and press it against the end face of the adjusting nut;

[0014] Step 2: Insert the force transmission steel sleeve into the tension column, and insert the strong pin into the end hole.

[0015] Step 3: Insert the pry bar into the circumferential hole and rotate the force-transmitting steel sleeve to loosen the adjusting nut.

[0016] The steps are as follows: continue rotating the force transmission steel sleeve to push the bearing seat away from the tension column.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By modifying scrapped caps and nuts into core components, the cost is reduced to near zero. It adopts a dual mechanical channel design, using circumferential pry holes to achieve high torque loosening, and end face pins to provide axial thrust. It also adopts an integrated operation, using a single tool to simultaneously complete the nut disassembly and bearing housing separation, thus making its operation simpler.

[0019] 2. The arc-shaped protrusions on the crowbar make insertion easier and less obstructed during the process, and the smaller contact area reduces frictional resistance. Simultaneously, tilting the crowbar during prying allows one side of its bottom to contact the contact surface, while another set of arc-shaped protrusions on its top is located on the other side of the prying position. This tilting increases the arc-shaped contact area, ensuring sufficient prying force. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the disassembly tool of the present invention;

[0021] Figure 2 This is a partial structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the crowbar of the present invention.

[0023] In the diagram: 1. Retaining ring; 2. Force transmission steel sleeve; 3. Pin hole; 4. Strong pin; 5. Pry hole; 6. Pry bar. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" 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 communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0026] Please see Figures 1-3 In this embodiment of the invention, a rolling mill tension column adjusting nut and bearing seat integrated disassembly tool includes a retaining ring 1, a force transmission steel sleeve 2 is provided on the top of the retaining ring 1, and pry holes 5 are provided on both sides of one end of the force transmission steel sleeve 2, and strong pins 4 are inserted on both sides of the top of the force transmission steel sleeve 2.

[0027] Among them, pry bars 6 are inserted on both sides of one end of the force transmission steel sleeve 2, and multiple sets of arc-shaped protrusions are evenly arranged on the outer side of the pry bar 6 near the force transmission steel sleeve 2.

[0028] In this embodiment, the arc-shaped protrusions on the crowbar 6 make insertion easier and less obstructed during the insertion process due to the arc-shaped surface. The smaller contact area of ​​the insertion surface reduces the frictional resistance generated during insertion. At the same time, during the prying process, the crowbar 6 is tilted so that one side of the bottom of the crowbar 6 contacts the contact surface, while another set of arc-shaped protrusions on its top is located on the top of the other side of the prying position. Due to its tilt, the arc-shaped contact surface of the prying is larger, ensuring the prying force.

[0029] Please refer to this carefully. Figures 1 to 3Both sides of the top of the force transmission steel sleeve 2 are provided with pin holes 3 that match the strong pin 4. The strong pin 4 is inserted and connected to the force transmission steel sleeve 2 through the pin holes 3.

[0030] Please refer to this carefully. Figures 1 to 3 The retaining ring 1 is made by cutting a scrapped cap (inner diameter Φ325mm, thickness 30mm).

[0031] Please refer to this carefully. Figures 1 to 3 The force transmission steel sleeve 2 uses a discarded adjusting nut with an outer diameter of Φ280mm and six sets of Φ20mm through holes drilled around its circumference. At the same time, a Φ16mm and 20mm deep blind hole is drilled at 180° on the end face.

[0032] Please refer to this carefully. Figures 1 to 3 The strong pin shaft 4 is made by turning two M16×60mm bolt rods and removing the threads to leave the smooth rod section.

[0033] Please refer to this carefully. Figures 1 to 3 The outer diameter of the crowbar 6 on the side closest to the force transmission steel sleeve 2 increases sequentially from left to right.

[0034] Please refer to this carefully. Figures 1 to 3 The method for disassembling the rolling mill tension column adjusting nut and bearing housing as a whole includes the following steps:

[0035] Step 1: Place the retaining ring 1 onto the tension column and press it against the end face of the adjusting nut;

[0036] Step 2: Insert the force transmission steel sleeve 2 into the tension column, and insert the strong pin 4 into the end hole.

[0037] Step 3: Insert the pry bar 6 into the circumferential hole and rotate the force transmission steel sleeve 2, causing the adjusting nut to unscrew.

[0038] The steps are as follows: continue to rotate the force transmission steel sleeve 2, and push the bearing seat away from the tension column.

[0039] The working principle of this invention is as follows: The operation process includes the following steps:

[0040] Step 1: Install the retaining ring tightly against the adjusting nut;

[0041] Step 2: Fit the steel sleeve onto the tension column and insert the pin;

[0042] Step 3: Insert the pry bar into the circumferential hole alternately and rotate it. Within 35 minutes, remove the nut and bearing seat simultaneously. The entire operation process ensures that the steel sleeve is evenly stressed, which increases the tightening torque of the nut by 40% and effectively improves its preload, thereby increasing its utilization rate.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A disassembly tool integrating a rolling mill tension column adjusting nut and bearing seat, comprising a retaining ring (1), characterized in that, The top of the retaining ring (1) is provided with a force transmission steel sleeve (2), and both sides of one end of the force transmission steel sleeve (2) are provided with pry holes (5), and both sides of the top of the force transmission steel sleeve (2) are provided with strong pins (4). Among them, pry bars (6) are inserted on both sides of one end of the force transmission steel sleeve (2), and multiple sets of arc-shaped protrusions are evenly arranged on the outer side of the pry bar (6) near the force transmission steel sleeve (2).

2. The integrated disassembly tool for the rolling mill tension column adjusting nut and bearing seat according to claim 1, characterized in that, Both sides of the top of the force transmission steel sleeve (2) are provided with pin holes (3) that match the strong pin (4). The strong pin (4) is inserted and connected to the force transmission steel sleeve (2) through the pin holes (3).

3. The integrated disassembly tool for the rolling mill tension column adjusting nut and bearing seat according to claim 1, characterized in that, The retaining ring (1) is made by cutting up a scrapped cap.

4. The integrated disassembly tool for the rolling mill tension column adjusting nut and bearing seat according to claim 1, characterized in that, The force transmission steel sleeve (2) is made of discarded adjusting nuts with an outer diameter of Φ280mm and six sets of Φ20mm through holes drilled around the circumference. At the same time, a Φ16mm and 20mm deep blind hole is drilled at 180° on the end face.

5. The integrated disassembly tool for the rolling mill tension column adjusting nut and bearing seat according to claim 1, characterized in that, The strong pin shaft (4) is made by turning two M16×60mm bolt rods and removing the threads to retain the smooth rod section.

6. The integrated disassembly tool for the rolling mill tension column adjusting nut and bearing seat according to claim 1, characterized in that, The outer diameter of the crowbar (6) on the side closest to the force transmission steel sleeve (2) increases sequentially from left to right.

7. A method for disassembling a rolling mill tension column adjusting nut and bearing housing in an integrated manner, characterized in that, The method for disassembling the rolling mill tension column adjusting nut and bearing housing as a whole includes the following steps: Step 1: Place the retaining ring (1) onto the tension column and press it against the end face of the adjusting nut; Step 2: The force transmission steel sleeve (2) is fitted into the tension column, and the strong pin shaft (4) is inserted into the end hole; Step 3: Insert the pry bar (6) into the circumferential hole and rotate the force transmission steel sleeve (2) to drive the adjusting nut out; The steps are to continue rotating the force transmission steel sleeve (2) and push the bearing seat away from the tension column.

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