A mill positioning pin

Abstract

The utility model relates to rolling mill technical field discloses a kind of rolling mill positioning pin, including, positioning pin main body, the positioning pin main body is cylindrical structure, one end of the positioning pin main body is machined with two mutually parallel grooves to form three parallel positioning teeth, at least two oil holes are vertically provided in the other end of the positioning pin main body and respectively penetrate two The groove;Pin cover, the pin cover includes cylindrical main part, one side of the main part is provided with the circular groove matching with the diameter of the positioning pin main body, and the main part is sleeved on the positioning pin main body away from the groove one end by the circular groove. The utility model increases the contact area of positioning pin and copper nut, improves the body strength of positioning pin. In addition, the design of oil eye makes the lubricating grease more effectively penetrate to rolling mill bearing seat and pressure ball pad bottom, significantly reduces the wear of bearing seat and pressure ball pad, improves the overall performance and service life of rolling mill.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, and in particular to a rolling mill positioning pin. Background Technology

[0002] In rolling mill equipment, locating pins play a crucial role in securing copper nuts and maintaining their stability, thereby assisting the mill in achieving sensitive adjustments, preventing jamming, and preventing tooth breakage, thus improving operational efficiency. Currently, the following problems exist with the use of rolling mill locating pins: 1. The original design of the rolling mill locating pins lacks an grease well, preventing lubricating grease from effectively penetrating to the bottom of the rolling mill bearing seats and pressure ball pads. This results in these critical parts lacking necessary lubrication during operation, leading to accelerated wear over time and affecting the overall performance and service life of the rolling mill. 2. During operation, oil, water, dust, and other debris can easily penetrate the interior through gaps, damaging critical components. In particular, the tension column and copper nut parts of the rolling mill are susceptible to corrosion from mud and scale, potentially causing various malfunctions and leading to seizing of the tension column and support system. This severely affects the stability of the rolling mill, increasing production inconvenience and losses. Frequent damage also increases spare parts costs and the labor intensity of personnel. 3. The original mill locating pins were not strong enough and were easily damaged during the pressing process, leading to the copper nuts seizing and making mill maintenance difficult. Repairs could only be performed by destroying the copper nuts, significantly increasing maintenance costs. Therefore, a new mill locating pin was developed. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a rolling mill positioning pin, which aims to overcome the problems of insufficient lubrication, susceptibility to external environmental damage, and insufficient strength of existing rolling mill positioning pins.

[0004] To achieve the aforementioned objectives of this utility model, the technical solution adopted is as follows: A rolling mill positioning pin, comprising, The positioning pin body is cylindrical. One end of the positioning pin body is machined with two parallel grooves to form three parallel positioning teeth. The other end of the positioning pin body is vertically provided with at least two oil holes that pass through the two grooves respectively. The pin cover includes a cylindrical main body, one side of which has a circular groove that matches the diameter of the positioning pin body. The main body is fitted onto the end of the positioning pin body away from the groove through the circular groove.

[0005] As a further improvement of this utility model, the main body is provided with a plurality of through holes vertically.

[0006] As a further improvement of this utility model, the groove is a trapezoidal groove.

[0007] As a further improvement of this utility model, two chamfers are symmetrically arranged on the side of the positioning pin body, located on the sides of the two grooves that are far apart from each other.

[0008] As a further improvement of this utility model, the end of the positioning pin body away from the groove is provided with an external thread, and the inner wall of the main body is provided with an internal thread, and the main body is screwed onto the positioning pin body.

[0009] As a further improvement of this utility model, an oil storage groove is provided on the other end face of the positioning pin body, and the oil hole is located in the oil storage groove.

[0010] The beneficial effects of this utility model are: the newly added oil hole design allows the lubricating grease to penetrate more effectively into the bottom of the rolling mill bearing housing and the pressure ball pad, ensuring that these key parts are fully lubricated during operation, significantly reducing the wear of the bearing housing and the pressure ball pad, and improving the overall performance and service life of the rolling mill.

[0011] The pin cover of this utility model prevents the positioning pin from running out during operation, and at the same time prevents impurities such as oil and dust from entering the mill through the oil hole, thereby reducing the damage of the external environment to the internal components of the mill.

[0012] This invention sets the locating pin to three teeth, which increases the contact area between the locating pin and the copper nut, improves the strength of the locating pin, reduces the chance of the copper nut seizing due to damage to the locating pin, and improves the efficiency of subsequent rolling mill maintenance.

[0013] The design of the trapezoidal groove of the positioning pin, the setting of the chamfer, and the threaded connection of the pin cover in this utility model make the installation and use of the positioning pin more convenient and the structure more stable and reliable. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the split structure from a second perspective of the present invention.

[0015] In the figure: 1. Locating pin body, 11. Groove, 12. Locating tooth, 13. Oil hole, 14. Chamfer, 15. External thread, 16. Oil reservoir, 2. Pin cover, 21. Main body, 22. Circular groove, 23. Through hole, 24. Internal thread. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] Example 1 like Figure 1-2 As shown, a rolling mill positioning pin includes, The positioning pin body 1 is a cylindrical structure. One end of the positioning pin body 1 is machined with two parallel grooves 11 to form three parallel positioning teeth 12. The other end of the positioning pin body 1 is vertically provided with at least two oil holes 13 that pass through the two grooves 11 respectively. The pin cover 2 includes a cylindrical main body 21. One side of the main body 21 is provided with a circular groove 22 that matches the diameter of the positioning pin body 1. The main body 21 is sleeved on the end of the positioning pin body 1 away from the groove 11 through the circular groove 22.

[0019] The main body 21 has multiple through holes 23 vertically formed on it.

[0020] The groove 11 is a trapezoidal groove.

[0021] The positioning pin body 1 has two chamfered corners 14 symmetrically arranged on its side, located on opposite sides of the two grooves 11 that are far apart from each other.

[0022] The locating pin body 1 has an external thread 15 at one end away from the groove 11, and the inner wall of the main body 21 has an internal thread 24. The main body 21 is screwed onto the locating pin body 1.

[0023] Example 2 Based on the structure of Embodiment 1, in Embodiment 2, as follows: Figure 3 As shown, an oil storage groove 16 is provided on the other end face of the positioning pin body 1, and the oil hole 13 is located in the oil storage groove 16.

[0024] By providing oil holes 13 on the locating pin body 1, lubricating grease can penetrate through the oil holes 13 to the bottom of the rolling mill bearing housing and the pressure ball pad, achieving effective lubrication of key parts and reducing friction and wear. The three locating teeth 12 at one end of the locating pin body 1 increase the contact area with the copper nut, improve the strength of the locating pin body, and enable the locating pin to more firmly fix the copper nut, reducing the possibility of the copper nut seizing due to damage to the locating pin. The pin cover 2 is sleeved on the end of the locating pin body 1 away from the groove 11, which can prevent the locating pin from running out during operation, and at the same time prevent oil, dust and other impurities from entering the rolling mill through the oil hole.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, component disassembly or combination, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rolling mill positioning pin, characterized in that: include, The positioning pin body is cylindrical. One end of the positioning pin body is machined with two parallel grooves to form three parallel positioning teeth. The other end of the positioning pin body is vertically provided with at least two oil holes that pass through the two grooves respectively. The pin cover includes a cylindrical main body, one side of which has a circular groove that matches the diameter of the positioning pin body. The main body is fitted onto the end of the positioning pin body away from the groove through the circular groove.

2. A rolling mill positioning pin according to claim 1, characterized in that: The main body has multiple through holes vertically formed.

3. A rolling mill positioning pin according to claim 1, characterized in that: The groove is a trapezoidal groove.

4. A rolling mill positioning pin according to claim 1, characterized in that: The locating pin body has two symmetrically arranged chamfers on its side, located on opposite sides of the two grooves.

5. A rolling mill positioning pin according to claim 1, characterized in that: The locating pin body has an external thread at one end away from the groove, and an internal thread on the inner wall of the main body. The main body is screwed onto the locating pin body.

6. A rolling mill positioning pin according to claim 1, characterized in that: An oil reservoir is provided on the other end face of the positioning pin body, and the oil hole is located in the oil reservoir.

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