CN115228945A - Pinch roll collar fixing structure and implementation method thereof - Google Patents

Abstract

The invention discloses a roller ring fixing structure for a pinch roller, comprising a roller shaft. An inner oil throwing ring, an outer oil throwing ring and a roller ring assembly are arranged on the circumference of the roller shaft in sequence from left to right. One side of the roller ring assembly A locking assembly is provided. The locking assembly includes a locking sleeve and a cone sleeve. The locking sleeve and the cone sleeve are connected by a flange. The end of the roller shaft is provided with a connecting screw, and the interior of the locking sleeve is provided with a threaded groove. The connecting screw and the threaded groove are connected by thread engagement, the interior of the locking sleeve is further provided with a cavity corresponding to the taper sleeve, the interior of the cavity is provided with a gasket, and one side of the gasket is provided with a butterfly spring; A realization method of a pinch roller ring fixing structure is disclosed. In the present invention, when the lateral pressure of the roller ring is relatively large, the pressure can be reduced by the butterfly spring, so as to avoid the roller ring from being subjected to the combined action of the alternating stress caused by the radial pressure and the thermal expansion stress caused by the temperature rise of the roller shaft. caused by the collapse of the roll.

Description

A pinch roller ring fixing structure and its realization method

technical field

The invention belongs to the technical field of pinch roller ring fixing, and in particular relates to a pinch roller ring fixing structure and a realization method thereof.

Background technique

High-speed line and bar rolling mills are the key equipment in the production of iron and steel industry. The installation and fixation of the roll rings of this type of rolling mills are assembled with tapered sleeves. Keyless connection and load bearing are realized through the frictional force of the joint surface. Assembly is extremely important (because it is keyless and load-bearing by friction). The existing pinch rollers have some problems during use, such as:

1. Under the action of axial pressure, the taper sleeve overcomes the friction force between the taper sleeve and the roller shaft, the friction force between the roller ring and the taper sleeve, and the positive pressure axial component force of the roller shaft acting on the taper sleeve and is assembled in place. , forming a mechanical balance; this method will cause the pressure drop phenomenon due to wear and deformation of the taper sleeve for a long time;

2. The function of the pinch roller is to maintain the clamping force of the whole finishing rolling process. At present, the wire rod production speed is getting faster and faster, which is affected by the control of the electrical response time, and the wire rod will have a certain clamping force during the rolling process. The force is not enough, the wire is deformed, which affects the wire entering the laying machine in a good state. Therefore, it is necessary to increase the diameter of the pinch roller to compensate for the electrical delay, and a larger torque is required to maintain the clamping force during clamping;

3. The traditional pinch rollers all use the water spray structure to cool down. Although the laying machine has an air blowing device to blow away the water that enters it, it cannot guarantee that no water will enter the laying tube of the laying machine at all; Affect the service life of the laying tube of the laying machine, and even the explosion accident of the laying tube, and affect the quality of the subsequent rolling wire products;

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pinch roller ring fixing structure to solve the above-mentioned problems in the background art. The pinch roller ring fixing structure provided by the present invention has the characteristics of avoiding pressure drop.

Another object of the present invention is to provide a method for realizing the fixing structure of the pinch roller ring.

In order to achieve the above purpose, the present invention provides the following technical solutions: a pinch roller roller ring fixing structure, comprising a roller shaft, and an inner oil throwing ring, an outer oil throwing ring and a roller ring are sequentially arranged on the circumference of the roller shaft from left to right. Assemblies, one side of the roller ring assembly is provided with a locking assembly, the locking assembly includes a locking sleeve and a taper sleeve, the locking sleeve and the taper sleeve are connected by a flange, the taper sleeve is set on the circumference of the roller shaft, and the flange In contact with the side of the roller ring assembly, the end of the roller shaft is provided with a connecting screw, the inside of the locking sleeve is provided with a threaded groove, the connecting screw and the threaded groove are connected by thread engagement, and the inside of the locking sleeve is also provided with a taper sleeve. In the corresponding cavity, a gasket is arranged inside the cavity, and a butterfly spring is arranged on one side of the gasket.

In order to improve the stability of use, further, the butterfly spring is composed of three parallel steel butterfly springs. The thickness of the single-piece steel disc spring is 8.15mm.

In order to support the roller ring, further, the roller ring assembly includes a support wheel, a roller ring and a gland, wherein the roller ring is arranged on the circumference of the support wheel, and the gland is fixed on the side of the support wheel by screws.

In order to further strengthen the locking effect of the roller ring under the covering pressure of the locking sleeve, and improve the duration of the locking effect, so as to avoid the pressure drop of the taper sleeve and insufficient clamping force, resulting in piles of steel, fried rollers, In the event of a personal injury accident, further, a keyway is arranged on the circumference of the roller shaft, a first keyway corresponding to the keyway is arranged on the support wheel, a second keyway corresponding to the keyway is arranged on the taper sleeve, the keyway, the first keyway And the second keyway is connected by a key.

In order to generate airflow when the support wheel rotates, accelerate the air circulation in the support wheel, and thus play a role in cooling, there is no need to spray water on the pinch roll, and avoid bringing the cold water of the pinch roll into the subsequent laying machine. The service life of the laying pipe of the laying machine is prolonged, and further, a plurality of air holes in an annular array are arranged on the support wheel.

In order to ensure the cooling effect, further, the angle of the air hole was set to 13°.

Further in the present invention, the method for realizing the fixing structure of the pinch roller ring includes the following steps:

(1) Assemble the inner slinger and the outer slinger to the roller shaft in sequence;

(2) Assemble the key to the roller shaft;

(3) Align the first keyway on the support wheel with the key, and assemble the roller ring assembly on the roller shaft;

(4) Align the second keyway on the taper sleeve with the key, and assemble the taper sleeve on the roller shaft;

(5) Tighten the locking sleeve to make the connecting screw engage with the thread groove.

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

1. In the present invention, when the lateral pressure of the roller ring is relatively large, the butterfly spring can be used to reduce the pressure, so as to avoid the combination of the alternating stress caused by the radial pressure of the roller ring and the thermal expansion stress caused by the temperature rise of the roller shaft. Collapse caused by the action;

2. The butterfly spring of the present invention can buffer the tensioning force in the radial direction of the roller ring, reduce the phenomenon of frying the roller when the tensioning force is too large, and can also ensure the tensioning force of the roller ring under long-term use to avoid The phenomenon of wrong roll and pressure drop occurs;

3. The present invention further strengthens the locking effect of the roller ring under the covering pressure of the locking sleeve through the key and the keyway between the roller shaft, the support wheel and the tapered sleeve, and improves the continuous locking effect. time, so as to avoid the pressure drop of the taper sleeve and the insufficient clamping force, resulting in steel piles, fried rollers and even injury accidents on the whole line of the high-speed line;

4. The support wheel of the present invention is provided with a number of air holes in an annular array. Through the arrangement of the air holes, the air flow can be generated when the support wheel rotates, and the air circulation in the support wheel is accelerated, so as to play a role in cooling, and there is no need to pinch the air. The rolls are sprayed with water, which avoids bringing the cold water of the pinch rolls into the subsequent laying machine, and prolongs the service life of the laying tube of the laying machine.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of a locking assembly of the present invention;

Fig. 3 is the structural representation of the locking sleeve of the present invention;

Fig. 4 is the structural schematic diagram of the roller ring assembly of the present invention;

Fig. 5 is the structural representation of the support wheel of the present invention;

In the figure: 1. Roller shaft; 2. Inner flinger; 3. Outer flinger; 4. Roller ring assembly; 41. Support wheel; 411, Air hole; 412, First keyway; 42, Roller ring; 43, gland; 5, locking assembly; 6, connecting screw; 7, key; 8, locking sleeve; 81, thread groove; 82, cavity; 9, taper sleeve; 91, second keyway; 10, flange; 11. Gasket; 12. Butterfly spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

1-5, the present invention provides the following technical solutions: a pinch roller roller ring fixing structure, including a roller shaft 1, the circumference of the roller shaft 1 is sequentially provided with an inner oil throwing ring 2, an outer throwing ring from left to right Oil ring 3 and roller ring assembly 4. A locking assembly 5 is provided on one side of the roller ring assembly 4. The locking assembly 5 includes a locking sleeve 8 and a tapered sleeve 9. The flange is connected between the locking sleeve 8 and the tapered sleeve 9. 10 connection, the tapered sleeve 9 is sleeved on the circumference of the roller shaft 1, the flange 10 is in contact with the side of the roller ring assembly 4, the end of the roller shaft 1 is provided with a connecting screw 6, and the inside of the locking sleeve 8 is provided with a thread groove 81. The connecting screw 6 and the threaded groove 81 are connected by thread engagement. The interior of the locking sleeve 8 is also provided with a cavity 82 corresponding to the taper sleeve 9. The interior of the cavity 82 is provided with a gasket 11. A butterfly spring 12 is provided on the side.

By adopting the above technical solution, when the lateral pressure on the roller ring 42 is relatively large, the butterfly spring 12 can be used to reduce the pressure, thereby avoiding the alternating stress caused by the radial pressure on the roller ring 42 and the temperature rise of the roller shaft. The collapsing roll is caused by the combined action of the thermal expansion stress; the butterfly spring 12 can buffer the tightening force in the radial direction of the roll ring 42 to reduce the frying phenomenon caused by the excessive tightening force, and can also be used for a long time. The tightening force of the roller ring 42 is guaranteed to avoid the phenomenon of wrong roller and pressure drop.

Specifically, the butterfly spring 12 is composed of three parallel steel butterfly springs. The thickness of the single-piece steel disc spring is 8.15mm.

By adopting the above technical solution, the stability of use is improved.

Specifically, the roller ring assembly 4 includes a support wheel 41 , a roller ring 42 and a press cover 43 , wherein the roller ring 42 is arranged on the circumference of the support wheel 41 , and the press cover 43 is fixed on the side of the support wheel 41 by screws.

By adopting the above technical solution, the roller ring 42 is supported.

Example 2

The difference between this embodiment and Embodiment 1 is that: specifically, the roller shaft 1 is provided with a key groove on the circumference, the support wheel 41 is provided with a first key groove 412 corresponding to the key groove, and the taper sleeve 9 is provided with a key groove corresponding to the key groove. The corresponding second keyway 91 , the keyway, the first keyway 412 and the second keyway 91 are connected by the key 7 .

By adopting the above technical solution, the locking effect of the roller ring 42 is further strengthened under the covering pressure of the locking sleeve 8 by the key and the keyway between the roller shaft 1, the support wheel 41 and the tapered sleeve 9. The duration of the locking effect is improved, so as to avoid the pressure drop of the taper sleeve 9 and the insufficient clamping force, which may cause steel piles, fried rollers or even injury accidents on the whole line of the high-speed line.

Example 3

The difference between this embodiment and Embodiment 1 is that: specifically, the support wheel 41 is provided with a plurality of air holes 411 in an annular array.

By adopting the above technical solution, through the arrangement of the air holes 411, the air flow can be generated when the support wheel 41 rotates, and the air circulation in the support wheel 41 can be accelerated, so as to play the role of cooling, and there is no need to spray water on the pinch roller, which avoids the need to spray water on the pinch roller. The cold water of the pinch roll is brought into the subsequent laying machine, which prolongs the service life of the laying tube of the laying machine.

Specifically, the angle of the air hole 411 is 13°, which is obtained by repeated practice. If the angle of the air hole is too large, the equipment will vibrate, and if the angle is too small, a good cooling effect will not be achieved.

By adopting the above technical solutions, the cooling effect is ensured.

Example 4

Specifically, further, a method for realizing a pinch roller ring fixing structure according to the present invention includes the following steps:

(1) Assemble the inner slinger 2 and the outer slinger 3 to the roller shaft 1 in sequence;

(2), assemble the key 7 to the roller shaft 1;

(3) Align the first key groove 412 on the support wheel 41 with the key 7, and assemble the roller ring assembly 4 on the roller shaft 1;

(4), align the second keyway 91 on the taper sleeve 9 with the key 7, and assemble the taper sleeve 9 on the roller shaft 1;

(5) Tighten the locking sleeve 8 to make the connecting screw 6 engage with the thread groove 81 .

To sum up, in the present invention, when the lateral pressure on the roller ring 42 is relatively large, the butterfly spring 12 can be used to reduce the pressure, thereby avoiding the alternating stress caused by the radial pressure on the roller ring 42 and the temperature rise of the roller shaft. The collapse of the roller is caused by the combined action of the thermal expansion stress caused by the roller; the butterfly spring 12 of the present invention can buffer the tensioning force in the radial direction of the roller ring 42, so as to reduce the fried roller phenomenon caused by the excessive tensioning force, and at the same time, it can also The tensioning force of the roller ring 42 is guaranteed under long-term use to avoid the phenomenon of wrong roller and pressure drop; the present invention uses the key and the keyway between the roller shaft 1, the support wheel 41 and the taper sleeve 9 to limit the position, and Under the covering pressure of the locking sleeve 8, the locking effect of the roller ring 42 is further strengthened, and the duration of the locking effect is increased, so as to avoid the pressure drop of the tapered sleeve 9 and the insufficient clamping force, resulting in piles of steel, Frying rollers even cause injury accidents; the support wheel 41 of the present invention is provided with a number of air holes 411 in an annular array. Therefore, it has the effect of cooling, and it is not necessary to spray water on the pinch roll, which avoids bringing the cold water of the pinch roll into the subsequent laying machine, and prolongs the service life of the laying tube of the laying machine.

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, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A pinch roller roller ring fixing structure, comprising a roller shaft, is characterized in that: an inner oil throwing ring, an outer oil throwing ring and a roller ring assembly are sequentially arranged on the circumference of the roller shaft from left to right, and the There is a locking assembly on one side, the locking assembly includes a locking sleeve and a cone sleeve, the locking sleeve and the cone sleeve are connected by a flange, the cone sleeve is set on the circumference of the roller shaft, and the flange is in contact with the roller ring assembly. On the side, the end of the roller shaft is provided with a connecting screw, the interior of the locking sleeve is provided with a threaded groove, the connecting screw and the threaded groove are connected by threaded engagement, and the interior of the locking sleeve is also provided with a cavity corresponding to the taper sleeve. The inside of the cavity is provided with a gasket, and one side of the gasket is provided with a butterfly spring. 2 . The pinch roller ring fixing structure according to claim 1 , wherein the butterfly spring is composed of three parallel steel butterfly springs. 3 . 3 . The pinch roller ring fixing structure according to claim 2 , wherein the thickness of the single piece of the steel disc spring is 8.15 mm. 4 . 4. A pinch roller roller ring fixing structure according to claim 1, wherein the roller ring assembly comprises a support wheel, a roller ring and a press cover, wherein the roller ring is arranged on the circumference of the support wheel, The gland is screwed to the side of the support wheel. 5. A pinch roller ring fixing structure according to claim 4, characterized in that: the circumference of the roller shaft is provided with a keyway, the support wheel is provided with a first keyway corresponding to the keyway, and the tapered sleeve is provided with a keyway. There is a second keyway corresponding to the keyway, and the keyway, the first keyway and the second keyway are connected by a key. 6 . The pinch roller ring fixing structure according to claim 4 , wherein the support wheel is provided with a plurality of air holes in an annular array. 7 . 7 . The pinch roller ring fixing structure according to claim 6 , wherein the angle of the air hole is 13°. 8 . 8. The method for realizing a pinch roller ring fixing structure according to any one of claims 1-7, wherein the method comprises the following steps: (1) Assemble the inner slinger and the outer slinger to the roller shaft in sequence; (2) Assemble the key to the roller shaft; (3) Align the first keyway on the support wheel with the key, and assemble the roller ring assembly on the roller shaft; (4) Align the second keyway on the taper sleeve with the key, and assemble the taper sleeve on the roller shaft; (5) Tighten the locking sleeve to make the connecting screw engage with the thread groove.

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