Helical roller assembly for producing high-wear-resistance hot rolled steel balls

By setting trapezoidal limiting grooves and limiting parts in the spiral roll, and combining the design of the rotating shaft and the top tightening member, the problem of easy breakage of the bolts during use of the spiral roll is solved, and a high wear resistance and stability connection method is achieved.

CN222778605UActive Publication Date: 2025-04-22JIANGYIN HUAZHENG METAL TECH
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Patent Information

Application Number
CN202421507350.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-04-22
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

During use, the bolts are prone to break due to torque during the existing spiral rolls, which have problems with insufficient wear resistance.

Method used

A spiral roll assembly for the production of high wear-resistant hot-rolled steel balls was designed. By setting trapezoidal limit grooves and trapezoidal limit parts in the spiral roll, and using a combination structure of the rotating shaft and the top tightening member, the bolt fixing method is cancelled, and technical means such as trapezoidal limit structure and elastic rubber washer are used to improve the stability and wear resistance of the connection.

Benefits of technology

Through the trapezoidal limit structure and the design of elastic rubber washer, the shaking of the rolling roller parts is reduced, the contact area is increased, the stress capacity is improved, the service life is extended, and the problem of bolt breakage is avoided.

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Abstract

The utility model discloses a spiral roller assembly for producing high-wear-resistance hot-rolled steel balls, relates to the technical field of skew rolling, and aims to solve the technical problems that most of the existing spiral rollers are fixed on a rotating shaft through bolts, and the spiral rollers are relatively large in resistance when rolling materials, so that the service life of the spiral rollers is prolonged. And the bolt is easy to break under the action of torsion after being used for a long time. The spiral roller comprises a spiral roller body, trapezoid-like limiting grooves are formed in a circular groove in the spiral roller body in an annular array mode, first arc-shaped inclined faces are arranged on the two sides of each trapezoid-like limiting groove, a rotating shaft is connected to the middle of the spiral roller body in a limiting mode, and trapezoid-like limiting parts are fixedly connected to the fixed end face of the middle of the rotating shaft in an annular array mode. Second arc-shaped inclined faces are arranged on the two sides of the trapezoid-like limiting part correspondingly, a circular fixing plate is fixedly connected to one side of the rotating shaft, a jacking piece is connected to the other side of the rotating shaft, a circular baffle is fixedly connected to one side of the outer end face of the jacking piece, and bearings are rotationally connected to the two ends of the rotating shaft correspondingly.
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Description

Technical Field

[0001] The utility model relates to the technical field of oblique rolling, in particular to a spiral roller assembly for producing high-wear-resistant hot-rolled steel balls. Background Art

[0002] Spiral rolling belongs to the oblique rolling technology. The basic principle is to process the rollers of the oblique rolling mill into spiral grooves or protrusions. The equipment used for spiral rolling is mainly a two-roller or three-roller oblique rolling mill, whose cross-section can be semicircular, trapezoidal or other shapes. Its transmission methods include single-roller transmission, multi-roller transmission and free rotation of rollers. The spiral rolling production process adopts the forming principle of warm extrusion, which significantly improves the material utilization rate, greatly shortens the process flow and reduces production costs. Spiral rolling belongs to the oblique rolling technology. During the rolling process, the rollers make the rolled piece spiral forward, and the gold chips gradually fill the hole shape, thereby obtaining the rolled piece of the required shape. This technology can be used in the rolling production of products such as steel balls, twist drill bits and feather fin tubes, and can also be used to produce various ring products.

[0003] At present, most spiral rollers are fixed on the rotating shaft with bolts. Since the spiral rollers have great resistance when rolling materials, the bolts are prone to breakage under the action of torque after long-term use. Therefore, the market urgently needs to develop a spiral roller assembly for the production of high-wear-resistant hot-rolled steel balls to help people solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a spiral roller assembly for the production of highly wear-resistant hot-rolled steel balls, so as to solve the problem raised in the above background technology that most of the current spiral rollers are fixed on the rotating shaft by bolts. Since the spiral rollers have a large resistance when rolling the materials, the bolts are prone to breakage under the action of torsion after long-term use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spiral roller assembly for producing highly wear-resistant hot-rolled steel balls, comprising a spiral roller, a circular array of trapezoidal limit grooves are arranged inside the circular groove inside the spiral roller, both sides of the trapezoidal limit grooves are provided with first arc-shaped inclined surfaces, the middle part of the spiral roller is limitedly connected to a rotating shaft, a trapezoidal limit portion is fixedly connected to a circular array on the fixed end face in the middle of the rotating shaft, both sides of the trapezoidal limit portion are provided with second arc-shaped inclined surfaces, one side of the rotating shaft is fixedly connected to a circular fixing plate, the other side of the rotating shaft is connected to a tightening member, one side of the outer end face of the tightening member is fixedly connected to a circular baffle, and both ends of the rotating shaft are rotatably connected to bearings.

[0006] Preferably, the spiral roller is inserted into the middle of the rotating shaft, and when the rotating shaft passes through the circular groove, the trapezoidal limiting portion slides into the trapezoidal limiting groove for limiting connection.

[0007] Preferably, when the trapezoidal limiting portion slides into the trapezoidal limiting groove, the first arcuate inclined surface fits with the second arcuate inclined surface.

[0008] Preferably, an elastic rubber gasket is fixedly connected to one side of the circular fixing plate, and the spiral roller is limited by the circular fixing plate after the spiral roller is inserted into the rotating shaft.

[0009] Preferably, an external threaded portion is fixedly connected to one end surface of one side of the rotating shaft, and an internal threaded portion is fixedly connected to one side of the middle portion of the inner portion of the tightening member.

[0010] Preferably, the internal threaded portion on the tightening member is threadedly connected to the external threaded portion on the rotating shaft, an anti-shake washer is fixedly connected to one side of the interior of the tightening member, and the rotating shaft passes through the middle of the anti-shake washer.

[0011] Preferably, a second anti-slip washer is fixedly connected to one end surface of the circular baffle, and a first anti-slip washer is fixedly connected to one end surface of the spiral roller.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, through the arrangement of the trapezoidal limiting groove and the trapezoidal limiting portion, the circular groove inside the spiral roller is provided with a trapezoidal limiting groove in an annular array, both sides of the trapezoidal limiting groove are provided with a first arc-shaped inclined surface, the middle of the spiral roller is limitedly connected with a rotating shaft, the circular array on the fixed end surface in the middle of the rotating shaft is fixedly connected with a trapezoidal limiting portion, both sides of the trapezoidal limiting portion are provided with a second arc-shaped inclined surface, and the spiral roller is inserted into the middle of the rotating shaft. When the rotating shaft passes through the circular groove, the trapezoidal limiting portion slides into the trapezoidal limiting portion. The groove limit connection drives the spiral roller to rotate by rotating the shaft. When the trapezoidal limit part slides into the trapezoidal limit groove, the first arc slope and the second arc slope are fitted together. The fit of the first arc slope and the second arc slope reduces the gap between the trapezoidal limit part and the trapezoidal limit groove to prevent shaking. At the same time, the contact area between the trapezoidal limit part and the trapezoidal limit groove is increased to increase the force, thereby increasing the service life of the trapezoidal limit part, eliminating the bolt fixing method, and improving the stability of the connection method.

[0014] 2. In the utility model, through the setting of the elastic rubber gasket, the elastic rubber gasket is fixedly connected to one side of the circular fixing plate. After the spiral roller is inserted into the rotating shaft, the spiral roller is limited by the circular fixing plate and the elastic rubber gasket is made to fit the end face of one side of the spiral roller. The elastic rubber gasket provides a gap between the circular fixing plate and the end face of one side of the spiral roller to prevent direct contact and friction, which may cause damage to the spiral roller.

[0015] 3. In the utility model, through the setting of the tightening piece, the internal threaded part on the tightening piece is threadedly connected with the external threaded part on the rotating shaft, and an anti-shake washer is fixedly connected to one side of the inside of the tightening piece. The rotating shaft passes through the middle of the anti-shake washer. When the spiral roller is inserted into the rotating shaft, the tightening piece is rotated to move to one side to hold the other side of the spiral roller, so that the circular fixed plate and the circular baffle can clamp the spiral roller. At the same time, the tightening piece is stabilized on the rotating shaft through the anti-shake washer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to the utility model;

[0017] Figure 2 It is the main sectional view of the utility model;

[0018] Figure 3 It is a side sectional view of the trapezoidal limiting groove of the utility model;

[0019] Figure 4 It is an enlarged view of the detail A of the present utility model.

[0020] In the figure: 1. spiral roller; 101. trapezoidal limiting groove; 102. first arc-shaped inclined surface; 103. first anti-skid washer; 2. rotating shaft; 201. circular fixing plate; 202. elastic rubber washer; 203. external threaded portion; 3. trapezoidal limiting portion; 301. second arc-shaped inclined surface; 4. tightening member; 401. circular baffle; 402. second anti-skid washer; 403. internal threaded portion; 404. anti-shake washer; 5. bearing. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 The utility model provides an embodiment: a spiral roller assembly for producing high-wear-resistant hot-rolled steel balls, including a spiral roller 1, a circular array of trapezoidal limiting grooves 101 are arranged in the inner circular groove of the spiral roller 1, and first arc-shaped inclined surfaces 102 are arranged on both sides of the trapezoidal limiting grooves 101, a rotating shaft 2 is connected to the middle of the spiral roller 1, a trapezoidal limiting portion 3 is fixedly connected to the middle fixed end surface of the rotating shaft 2 in an annular array, and second arc-shaped inclined surfaces 301 are arranged on both sides of the trapezoidal limiting portion 3, a circular fixing plate 201 is fixedly connected to one side of the rotating shaft 2, a tightening member 4 is connected to the other side of the rotating shaft 2, a circular baffle 401 is fixedly connected to one side of the outer end surface of the tightening member 4, and bearings 5 ​​are rotatably connected to both ends of the rotating shaft 2.

[0023] Furthermore, the spiral roller 1 is inserted into the middle of the rotating shaft 2. When the rotating shaft 2 passes through the circular groove, the trapezoidal limiting portion 3 slides into the trapezoidal limiting groove 101 for limiting connection, and the spiral roller 1 is driven to rotate through the rotating shaft 2.

[0024] Furthermore, when the trapezoidal limiting portion 3 slides into the trapezoidal limiting groove 101, the first arcuate inclined surface 102 fits with the second arcuate inclined surface 301. The fit between the first arcuate inclined surface 102 and the second arcuate inclined surface 301 reduces the gap between the trapezoidal limiting portion 3 and the trapezoidal limiting groove 101 to prevent shaking. At the same time, the contact area between the trapezoidal limiting portion 3 and the trapezoidal limiting groove 101 is increased to increase the force, thereby increasing the service life of the trapezoidal limiting portion 3.

[0025] Furthermore, an elastic rubber gasket 202 is fixedly connected to one side of the circular fixing plate 201. After the spiral roller 1 is inserted into the rotating shaft 2, the circular fixing plate 201 is used to limit the spiral roller 1 and make the elastic rubber gasket 202 fit the end face of one side of the spiral roller 1. The elastic rubber gasket 202 provides a gap between the circular fixing plate 201 and the end face of one side of the spiral roller 1 to prevent direct contact and friction, which would cause damage to the spiral roller 1.

[0026] Furthermore, an external threaded portion 203 is fixedly connected to one end surface of the rotating shaft 2 , and an internal threaded portion 403 is fixedly connected to one side of the middle portion of the inner portion of the tightening member 4 .

[0027] Furthermore, the internal threaded portion 403 on the tightening member 4 is threadedly connected to the external threaded portion 203 on the rotating shaft 2, and an anti-shake washer 404 is fixedly connected to one side of the interior of the tightening member 4. The rotating shaft 2 passes through the middle of the anti-shake washer 404. When the spiral roller 1 is inserted into the rotating shaft 2, the tightening member 4 is rotated to move the tightening member 4 to one side to support the other side of the spiral roller 1, so that the circular fixed plate 201 and the circular baffle 401 can clamp the spiral roller 1, and at the same time, the tightening member 4 is stabilized on the rotating shaft 2 through the anti-shake washer 404.

[0028] Furthermore, a second anti-slip washer 402 is fixedly connected to one end surface of the circular baffle 401, and a first anti-slip washer 103 is fixedly connected to one end surface of the spiral roller 1. When the circular baffle 401 clamps the spiral roller 1, the second anti-slip washer 402 is tightly attached to the first anti-slip washer 103, so that the tightening member 4 will not rotate when shaking.

[0029] Working principle: when in use, the spiral roller 1 is inserted into the middle of the rotating shaft 2. When the rotating shaft 2 passes through the circular groove, the trapezoidal limiting part 3 slides into the trapezoidal limiting groove 101 for limiting connection. The rotating shaft 2 is used to drive the spiral roller 1 to rotate. When the trapezoidal limiting part 3 slides into the trapezoidal limiting groove 101, the first arcuate inclined surface 102 fits with the second arcuate inclined surface 301. The fit between the first arcuate inclined surface 102 and the second arcuate inclined surface 301 reduces the gap between the trapezoidal limiting part 3 and the trapezoidal limiting groove 101 to prevent shaking. At the same time, the contact area between the trapezoidal limiting part 3 and the trapezoidal limiting groove 101 is increased to increase the force, thereby increasing the service life of the trapezoidal limiting part 3. After the spiral roller 1 is inserted into the rotating shaft 2, the tightening part 4 is rotated to move the tightening part 4 to one side to tighten the spiral roller 1 The other side of the spiral rolling roller 1 is supported, so that the circular fixing plate 201 and the circular baffle 401 can clamp the spiral rolling roller 1, and at the same time, the tensioning member 4 is stabilized on the rotating shaft 2 through the anti-shake washer 404. An elastic rubber washer 202 is fixedly connected to one side of the circular fixing plate 201. After the spiral rolling roller 1 is inserted into the rotating shaft 2, the circular fixing plate 201 is used to limit the spiral rolling roller 1 and the elastic rubber washer 202 is made to fit the end face of one side of the spiral rolling roller 1. The elastic rubber washer 202 is used to provide a gap between the circular fixing plate 201 and the end face of one side of the spiral rolling roller 1 to prevent direct contact and friction, which may cause damage to the spiral rolling roller 1. When the circular baffle 401 clamps the spiral rolling roller 1, the second anti-slip washer 402 is made to fit the first anti-slip washer 103, so that the tensioning member 4 will not rotate when shaking.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A spiral roller assembly for producing highly wear-resistant hot-rolled steel balls, comprising a spiral roller (1), characterized in that: A trapezoidal limiting groove (101) is arranged in an annular array in the inner circular groove of the spiral roller (1), and first arc-shaped inclined surfaces (102) are arranged on both sides of the trapezoidal limiting groove (101). A rotating shaft (2) is connected to the middle of the spiral roller (1) in a limiting manner, and a trapezoidal limiting portion (3) is fixedly connected to the middle fixed end surface of the rotating shaft (2) in an annular array, and second arc-shaped inclined surfaces (301) are arranged on both sides of the trapezoidal limiting portion (3). A circular fixing plate (201) is fixedly connected to one side of the rotating shaft (2), and a tightening member (4) is connected to the other side of the rotating shaft (2). A circular baffle (401) is fixedly connected to one side of the outer end surface of the tightening member (4), and bearings (5) are rotatably connected to both ends of the rotating shaft (2).

2. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 1 is characterized in that: The spiral roller (1) is inserted into the middle of the rotating shaft (2), and when the rotating shaft (2) passes through the circular groove, the trapezoidal limiting portion (3) slides into the trapezoidal limiting groove (101) for limiting connection.

3. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 2 is characterized in that: When the trapezoidal limiting portion (3) slides into the trapezoidal limiting groove (101), the first arcuate inclined surface (102) and the second arcuate inclined surface (301) are fitted together.

4. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 1, characterized in that: An elastic rubber gasket (202) is fixedly connected to one side of the circular fixing plate (201), and after the spiral roller (1) is inserted into the rotating shaft (2), the spiral roller (1) is limited by the circular fixing plate (201).

5. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 1, characterized in that: An external threaded portion (203) is fixedly connected to one end surface of the rotating shaft (2), and an internal threaded portion (403) is fixedly connected to one side of the middle portion of the inner portion of the tightening member (4).

6. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 5, characterized in that: The internal threaded portion (403) on the tightening member (4) is threadedly connected to the external threaded portion (203) on the rotating shaft (2); an anti-shake washer (404) is fixedly connected to one side of the interior of the tightening member (4); and the rotating shaft (2) passes through the middle of the anti-shake washer (404).

7. The spiral roller assembly for producing high wear-resistant hot-rolled steel balls according to claim 1, characterized in that: A second anti-slip washer (402) is fixedly connected to one end surface of the circular baffle (401), and a first anti-slip washer (103) is fixedly connected to one end surface of the spiral roller (1).