A fixed bracket for a screw rod in a rolling mill screwdown device

Abstract

The utility model discloses a fixed bracket of screw rod in rolling mill screwdown device, including rolling mill rack, the both sides fixed mounting of rolling mill rack has the base, the below of base is installed with the connecting plate, the below of connecting plate is installed with fixed bracket, the both ends of inside of connecting plate are equipped with the pin shaft, the inside middle part of fixed bracket is equipped with the limit installation groove, the inside of limit installation groove is installed with the screwdown positioning key, the inside of screwdown positioning key is equipped with fixed bolt, the inside fixed mounting of rolling mill rack has the screwdown nut, the inside of screwdown nut is installed with screwdown screw rod. The utility model discloses through increasing fixed bracket structure, effectively prevented the screwdown nut, screwdown screw rod's loosening and falling off, improved the reliability and security of equipment. Field use shows, this structure is safe and reliable, and the installation is convenient, avoided the size change of rolling piece because of loosening, ensured the stability of rolling process.

Description

Technical Field

[0001] This utility model relates to the technical field of rolling mill pressing devices, specifically a screw fixing bracket in a rolling mill pressing device. Background Technology

[0002] In the rolling mill of a metallurgical enterprise, the core function of the pressing device in the mill structure is to adjust the size of the roll gap between the rolls in order to control the thickness of the rolled workpiece (such as steel billet or steel plate) during the rolling process, ensure that the thickness of the final product meets the process requirements, and at the same time help to ensure the stability of the rolled workpiece. Since the screw fixing part in the pressing device often loosens, causing changes in the size of the rolled workpiece during the rolling process, it is necessary to fix the screw to meet the needs of production.

[0003] The existing screw fixing parts often loosen, causing changes in the dimensions of the rolled piece during the rolling process and affecting product quality. To address this, we propose a screw fixing bracket for the rolling mill pressing device. Utility Model Content

[0004] The purpose of this utility model is to provide a screw fixing bracket in the rolling mill pressing device to solve the problem mentioned in the background art that the existing pressing screw fixing part often loosens, causing changes in the size of the rolled piece during the rolling process and affecting product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lead screw fixing bracket in a rolling mill pressing device, comprising:

[0006] A rolling mill stand has bases fixedly installed on both sides, a connecting plate installed below the bases, and a fixed bracket installed below the connecting plate. Pins pass through both ends of the connecting plate. A limit mounting groove is formed in the middle of the fixed bracket. A pressing positioning key is installed inside the limit mounting groove. A fixing bolt passes through the pressing positioning key. A pressing nut is fixedly installed inside the rolling mill stand, and a pressing screw is installed inside the pressing nut.

[0007] In a preferred embodiment of the lead screw fixing bracket in a rolling mill pressing device of this utility model, the connecting plate is movably connected to the base via the pin, and the connecting plate is movably connected to the fixing bracket via the pin.

[0008] In a preferred embodiment of the lead screw fixing bracket in the rolling mill pressing device of this utility model, the fixing bracket is tightly fitted with the rolling mill frame and the pressing lead screw nut.

[0009] In a preferred embodiment of the lead screw fixing bracket in the rolling mill pressing device of this utility model, the fixing bolt passes through the interior of the pressing positioning key, and the fixing bolt is threadedly connected to the rolling mill frame.

[0010] In a preferred embodiment of the lead screw fixing bracket in a rolling mill pressing device of this utility model, the shape and size of the pressing positioning key partially match the shape and size inside the limiting mounting groove, and the pressing positioning key is in close contact with the pressing lead screw.

[0011] Compared with the prior art, this utility model provides a screw fixing bracket in a rolling mill pressing device, which has the following beneficial effects:

[0012] This invention effectively prevents the loosening and detachment of the pressing nut and pressing screw by adding a fixed bracket structure, thereby improving the reliability and safety of the equipment. Field use shows that this structure is safe and reliable, easy to install, avoids changes in the dimensions of the rolled piece due to loosening, and ensures the stability of the rolling process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the fixing bracket of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the base of this utility model;

[0016] Figure 4 This utility model Figure 2 Top view of the structure.

[0017] In the diagram: 1. Rolling mill frame; 2. Base; 3. Connecting plate; 4. Pin; 5. Fixed bracket; 6. Fixed bolt; 7. Press-down positioning key; 8. Press-down nut; 9. Press-down screw; 10. Limit mounting groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4A lead screw fixing bracket in a rolling mill pressing device includes a rolling mill frame 1, bases 2 fixedly installed on both sides of the rolling mill frame 1, a connecting plate 3 installed below the bases 2, a fixing bracket 5 installed below the connecting plate 3, pins 4 passing through both ends of the connecting plate 3, a limiting installation groove 10 opened in the middle of the interior of the fixing bracket 5, a pressing positioning key 7 installed inside the limiting installation groove 10, a fixing bolt 6 passing through the pressing positioning key 7, a pressing screw nut 8 fixedly installed inside the rolling mill frame 1, and a pressing screw 9 installed inside the pressing screw nut 8.

[0020] In this implementation plan, the addition of a fixed bracket 5 structure effectively prevents the loosening and detachment of the pressing nut 8 and the pressing screw 9, improving the reliability and safety of the equipment. Field use shows that this structure is safe and reliable, easy to install, avoids changes in the dimensions of the rolled piece due to loosening, and ensures the stability of the rolling process.

[0021] Furthermore:

[0022] In an optional embodiment, the connecting plate 3 is movably connected to the base 2 via a pin 4, and the connecting plate 3 is movably connected to the fixed bracket 5 via a pin 4.

[0023] In this implementation scheme: the movable connection method enables the overall structure to self-adjust and finely adjust, effectively absorbing vibration and impact during equipment operation, avoiding the additional stress caused by rigid connection, thereby significantly improving the reliability and service life of the fixed bracket 5.

[0024] Furthermore:

[0025] In an optional embodiment, the fixed bracket 5 is in close contact with the mill frame 1, and the fixed bracket 5 is in close contact with the pressing nut 8.

[0026] In this implementation scheme: the tightly fitting structure forms a large area of ​​surface contact support, which not only ensures the installation stability of the fixed bracket 5 relative to the rolling mill frame 1, but also directly supports and constrains the pressing nut 8, realizing dual positioning and anti-loosening of key moving parts.

[0027] Furthermore:

[0028] In an optional embodiment, the fixing bolt 6 passes through the interior of the pressing positioning key 7 and is threadedly connected to the mill frame 1.

[0029] In this implementation plan: the pressing positioning key 7 is installed together with the rolling mill frame 1 by fixing bolt 6, so that the pressing positioning key 7 can better support the pressing screw 9.

[0030] Furthermore:

[0031] In an optional embodiment, the shape and size of the pressed positioning key 7 partially match the shape and size inside the limiting mounting groove 10, and the pressed positioning key 7 is in close contact with the pressed lead screw 9.

[0032] In this implementation scheme: the limiting installation groove 10 plays a limiting role in pressing the positioning key 7, preventing the positioning key 7 from rotating and losing its supporting function.

[0033] Working Principle: When using the lead screw fixing bracket in this rolling mill pressing device, during normal operation of the rolling mill, the mill frame 1 bears the main rolling force. The original pressing positioning key 7, tightened by the fixing bolt 6, is used to fix the pressing nut 8 and the pressing screw 9. To prevent the fixing bolt 6 from loosening due to long-term vibration, this device adds a fixing bracket 5 below the pressing nut 8 and the pressing screw 9. This fixing bracket 5 is mounted on the base 2 via the connecting plate 3 and the pin 4, and the base 2 is firmly mounted on the rolling mill frame 1. When the fixing bolt 6 loosens, the fixing bracket 5 can provide continuous support through its upper contact surface with the pressing nut 8 or the pressing screw 9, preventing them from falling or shifting. Meanwhile, the pin shaft 4 connection method allows the fixed bracket 5 to self-adjust within a certain range, avoiding the additional stress caused by rigid connection, thereby ensuring the long-term stability of the pressing device during the rolling process and effectively avoiding the problem of workpiece size deviation caused by the loosening of the pressing screw nut 8 and pressing screw 9. This is the working principle of the screw fixing bracket in the pressing device of the rolling mill.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lead screw fixing bracket in a rolling mill pressing device, characterized in that, include: A rolling mill frame (1) is provided with bases (2) fixedly installed on both sides of the rolling mill frame (1). A connecting plate (3) is installed below the base (2). A fixed bracket (5) is installed below the connecting plate (3). Pins (4) are inserted through both ends of the connecting plate (3). A limiting installation groove (10) is opened in the middle of the fixed bracket (5). A pressing positioning key (7) is installed inside the limiting installation groove (10). A fixing bolt (6) is inserted inside the pressing positioning key (7). A pressing screw nut (8) is fixedly installed inside the rolling mill frame (1). A pressing screw rod (9) is installed inside the pressing screw nut (8).

2. The lead screw fixing bracket in a rolling mill pressing device according to claim 1, characterized in that, The connecting plate (3) is movably connected to the base (2) via the pin (4), and the connecting plate (3) is movably connected to the fixed bracket (5) via the pin (4).

3. The lead screw fixing bracket in a rolling mill pressing device according to claim 1, characterized in that, The fixed bracket (5) is in close contact with the mill frame (1), and the fixed bracket (5) is in close contact with the pressing wire nut (8).

4. The lead screw fixing bracket in a rolling mill pressing device according to claim 1, characterized in that, The fixing bolt (6) passes through the interior of the pressing positioning key (7), and the fixing bolt (6) is threadedly connected to the mill frame (1).

5. The lead screw fixing bracket in a rolling mill pressing device according to claim 1, characterized in that, The shape and size of the pressing positioning key (7) are partially matched with the shape and size inside the limiting mounting groove (10), and the pressing positioning key (7) is closely fitted with the pressing lead screw (9).

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