CN202366949U - Simple machinery combined energy storage roller - Google Patents

Abstract

The utility model discloses a simple mechanical combined energy storage roll, which belongs to the technical field of combined rolls and is composed of a roll shaft, a pressure nut, upper and lower split bearings, a pressure washer, a roll sleeve and a pressure bolt. The roll shaft is a tapered shaft, and there are six pressure bolt holes evenly distributed around the shoulder of the roll shaft; the inner surface of the roll sleeve is a tapered surface; the upper end surface of the pressure washer is a plane, and the lower end surface is a ring Inclined surface; the inner side of the pressure nut is processed with zigzag threads, and there are six pressure bolt holes evenly distributed around; the upper and lower split bearings are composed of upper end cover, lower base and rollers. The axial and radial strength of the simple mechanical combined energy storage roll has been greatly improved, the strength, rigidity, peeling resistance and wear resistance of the roll have been enhanced, and problems such as collapse and peeling of the existing combined roll have been overcome. .

Description

A Simple Mechanical Combined Energy Storage Roller

Technical field:

The utility model belongs to rolling mechanical equipment, and relates to the roll technology in the rolling machine technology, especially the technical field of combined rolls. the

Background technique:

In rolling machinery and equipment, rolls are easily damaged and are the main consumable parts. Existing roll both at home and abroad at present adopts integral cast steel roll and cast iron roll mostly. Compared with cast steel rolls, cast iron rolls have better wear resistance, but have poorer strength and are prone to roll breakage. In order to improve the surface hardness of the roll, the centrifugal casting technology of the roll has been applied in recent years. The roll surface and the roll core of the centrifugal casting roll are cast with different metals to obtain the unity of the roll surface hardness and the roll body strength. Due to the high manufacturing cost of such rolls, the one-time scrapping of old rolls causes great waste of materials, etc., the application of centrifugal rolls is greatly limited. Subsequently, combined rolls appeared. The combined rolls solved the problem of material waste to a certain extent, and the combined rolls used wear-resistant alloy roll sleeves, which greatly improved the life of the rolls. Or welding method, in actual production, accidents such as collapsing sleeves and rolling keys frequently occur. the

Aiming at the problems in the practical application of combined rolls, on February 19, 1997, Chinese Patent No. CN

1142993A discloses a high-energy combined roll, which overcomes the deficiencies in the prior art of combined rolls, and well solves the problems of collapsing and peeling of combined rolls during use. It mainly introduces a high-energy roll that inputs energy to the effective working part of the roll based on the rolling force during the manufacturing and assembly process, so as to maximize the strength, stiffness, peeling resistance and wear resistance. However, according to actual investigations, this high-energy roll is rarely used in production because it has the following disadvantages: the assembly operation process of the roll sleeve and the roll shaft of the high-energy combined roll is complicated; the unloading of the roll sleeve is difficult; the assembly and unloading They all rely on hydraulic equipment specially designed for this product, and the production cost is greatly increased due to the complete set of hydraulic equipment; when the deformation (energy) of the roll sleeve decreases due to long-term vibration during the working process of the high-energy combined roll, the roll must be unloaded Reassembly is time-consuming and laborious; when the roll sleeve is unloaded, it is easy to cause scratches on the outer surface of the roll shaft and the inner surface of the roll sleeve, which greatly shortens the service life of the roll shaft. the

The utility model provides a simple mechanically combined energy storage roll, which solves the problems in the above-mentioned patents while maximally improving the strength, rigidity, peeling resistance and wear resistance of the roll, and enhances the The practicability, economy and reliability of the combination roll play an important role in promoting the application of the combination roll in actual production. the

Invention content:

The utility model provides a simple mechanical combined energy storage roller aiming at the deficiency of the prior art. the

A simple mechanical combined energy storage roll is composed of a roll shaft, a pressure nut, upper and lower split bearings, a pressure washer, a roll sleeve and a pressure bolt. the

The roller shaft of the roll is a tapered shaft, a zigzag thread is processed on the upper end of the roller shaft, and a shaft shoulder is processed on the lower end of the roll shaft, and six pressure bolt holes are evenly distributed around the shoulder;

The inner surface of the roll sleeve is a tapered surface, the upper end surface of the roll sleeve is an annular slope, and the lower end surface is a plane, and the roll sleeve is fitted on the roll shaft with a small interference fit;

The upper end surface of the pressure washer is a plane, the lower end surface is an annular slope, the pressure washer is installed on the roll shaft, and the lower end surface of the pressure washer is in contact with the upper end surface of the roll sleeve;

The inner side of the pressurizing nut is processed with zigzag thread, and the pressurizing nut is installed on the roller shaft. There are six pressure bolt holes evenly distributed;

There are 12 pressure bolts in total, which are respectively installed in six pressure bolt holes on the pressure nut and six pressure bolt holes on the shoulder of the roller shaft;

The upper and lower split bearings are composed of an upper end cover, a lower base and a roller. The roller is located in the annular groove of the lower base of the upper and lower split bearing. The upper end cover of the upper and lower split bearing has an annular groove. The split bearing is installed on the roll shaft and is located between the pressure washer and the pressure nut;

Beneficial effects of the utility model: the simple mechanical combined energy storage roll greatly improves the strength, rigidity, peeling resistance and wear resistance of the roll, reduces the cost of the roll in production and application, and makes the existing roll application is more economical. the

Description of drawings:

Figure 1 is a front view of the assembly of a simple mechanical combined energy storage roll. the

Fig. 2 is a front view of the compression nut. the

Fig. 3 is a top view of the compression nut. the

Figure 4 is the front view of the upper and lower split bearings-lower base

Fig. 5 is a top view of the upper and lower split bearings-lower base. the

Figure 6 is the front view of the upper and lower split bearings - the upper end cover

Fig. 7 is a top view of the upper and lower split bearings-upper end cover. the

Figure 8 is a front view of the upper and lower split bearings. the

1. Roller shaft 2. Pressure nut 3. Upper and lower split bearings 4. Pressure washer

5. Roller sleeve 6. Shaft shoulder 7. Pressure bolt

Detailed ways:

Below in conjunction with accompanying drawing, the utility model will be further described

The assembly front view of the simple mechanical combined energy storage roll shown in Fig. 1 includes the roll shaft 1, the pressure nut 2, the upper and lower split bearings 3, the pressure washer 4, the roll sleeve 5, the shaft shoulder 6, the pressure Bolt 7. the

As shown in FIG. 1 , the roll shaft 1 is a tapered shaft, the upper end of the roll shaft 1 has a zigzag thread, and the lower end of the roll shaft 1 has a shoulder 6 . The inner surface of the roll sleeve 5 is a conical surface, the upper end surface of the roll sleeve 5 is an annular slope, and the lower end surface is a plane, the roll sleeve 5 is sleeved on the roll shaft 1 with an interference fit, and the shoulder of the roll shaft 1 6 enables the axial positioning of the roll sleeve 5. The tapered shaft design of the roll shaft 1 and the tapered surface design of the inner surface of the roll sleeve 5 make the unloading and assembly of the roll shaft and the roll sleeve more convenient, and effectively prevent the Extensive scratches on the outer surface of the roll shaft 1 and the inner surface of the roll sleeve 5. the

As shown in Figure 1, the upper end surface of the pressure washer 4 is a plane, the lower end surface is an annular slope, the pressure washer 4 is installed on the roll shaft 1, the lower end surface of the pressure washer 4 and the upper end surface of the roll sleeve 5 are The function of the annular inclined surface contact is to make the compressive force on the roll sleeve 5 have both axial component force and radial component force, so that the axial and radial strength of the roll shaft 1 are greatly improved. improve. the

As shown in Figure 1, the upper and lower split bearings 3 are installed between the pressure washer 4 and the pressure nut 2, so that when the pressure nut 2 is rotated and pressurized, the friction between the pressure washer 4 and the pressure nut 2 The sliding friction is changed into rolling friction, so that the press nut 2 can turn and compress the roll bushing 5 to the greatest extent. the

As shown in FIG. 2 , there are zigzag threads on the inner side of the pressure nut 2 ; as shown in FIG. 3 , there are six pressure bolt holes evenly distributed around the pressure nut 2 . The pressure nut 2 is installed on the roll shaft 1, and the zigzag thread on the pressure nut 2 and the zigzag thread on the upper end of the roll shaft 1 are screwed together to realize the initial axial compression of the roll sleeve 5, that is, the input roll Set of 5 has a certain compression potential. the

As shown in Figures 4, 5, and 8, the upper and lower split bearings include an upper end cover, a lower base and a roller. The roller is located in the annular groove of the lower base of the upper and lower split bearing, and the upper end cover of the upper and lower split bearing There is a ring groove. the

As shown in Figure 1, the pressure bolts 7 are respectively installed in the six pressure bolt holes on the pressure nut 2 and the six pressure bolt holes on the roll shaft shoulder 6, and the pressure bolts 7 can be rotated and tightened to realize the roll bushing. 5 to achieve the maximum energy storage of the roll sleeve 5; when the axial deformation (energy storage) of the roll sleeve 5 decreases due to the long-term vibration of the rolling mill, it can be real-time without disassembling the roll. Fasten the pressure bolt 7, apply axial force to the roll sleeve 5 in real time, keep the deformation (energy storage) of the roll sleeve 5 basically unchanged; when unloading the roll sleeve 5, turn the pressure bolt 7 on the shoulder 6 , the roll sleeve 5 is axially ejected, and the roll sleeve is separated from the roll shaft, so that the unloading and replacement of the roll sleeve 5 saves time and effort. the

The assembly scheme of the simple mechanical combined energy storage roll provided by the utility model is: as shown in Fig. Install on the roll shaft 1 from the upper end of the roll shaft 1; The pressure nut 2 is installed on the roll shaft 1 with threads, and the pressure nut 2 is tightened with a large torque wrench. The pressure nut applies a certain axial pressure to the roll sleeve 5, so that the roll sleeve 5 has a certain degree of pressure. Small axial deformation (stored energy). Install the pressure bolt 7 in the pressure bolt hole of the pressure nut 2 and the shaft shoulder 6, and use a torque wrench to turn the six pressure bolts on the pressure nut and the six pressure bolts on the shaft shoulder respectively, so that each pressure bolt is Roller sleeves 5 generate the same preload. Continue to rotate the pressure nut 2 downward with a large torque wrench, so that the pressure nut 2 exerts axial pressure on the roll sleeve 5 to the maximum, and the roll sleeve 5 undergoes a large compression deformation, realizing the roll sleeve 5. Initial axial compression. As the roll sleeve 5 is compressed, the reaction force of the roll sleeve 5 to the pressure nut 2 increases, so that the resistance to the pressure nut 2 increases so that the pressure nut 2 cannot continue to rotate, and the shaft sleeve is stopped. to pressure. the

At this time, if the roll sleeve 5 has not reached the required strain (energy storage), the pressure bolt 7 on the pressure nut 2 and the shaft shoulder 6 can be used to perform secondary compression on the roll sleeve. The specific operation is: Turn the six pressure bolts on the pressure nut with a torque wrench to exert an axial force on the roll sleeve 5. When turning the pressure bolts 7, pay attention to use a torque wrench to measure the torque of each pressure bolt to be the same, so that each The pressure bolts have the same active force on the roll sleeves 5 to ensure that the roll sleeves are evenly stressed. The same operation method can make the pressure bolt 7 on the shaft shoulder 6 exert an axial force on the roll sleeve 5, thereby realizing secondary compression (energy storage) of the roll sleeve. the

Unloading scheme: first use a torque wrench to loosen the six pressure bolts on the pressure nut 2, and then use a large torque wrench to remove the pressure nut 2; after the pressure nut is removed, turn the upper and lower split bearings in sequence 3 and the pressure washer 4 are removed; use the torque wrench to reversely turn the six pressure bolts 7 on the shaft shoulder 6, so that the pressure bolts 7 exert axial force on the roll sleeve 5, thereby pushing the roll sleeve 5 out, so that Separate from the roll sleeve and the roll shaft, so that the unloading of the roll sleeve 5 has been realized. the

Claims (1)

1. A simple mechanical combined energy storage roll is made up of a roll shaft, a pressurizing nut, upper and lower split bearings, a pressurizing washer, a roll sleeve, and a pressure bolt, and is characterized in that: The roller shaft of the roll is a tapered shaft, a zigzag thread is processed on the upper end of the roller shaft, and a shaft shoulder is processed on the lower end of the roll shaft, and six pressure bolt holes are evenly distributed around the shoulder; The inner surface of the roll sleeve is a tapered surface, the upper end surface of the roll sleeve is an annular slope, and the lower end surface is a plane, and the roll sleeve is fitted on the roll shaft with a small interference fit; The upper end surface of the pressure washer is a plane, the lower end surface is an annular slope, the pressure washer is installed on the roll shaft, and the lower end surface of the pressure washer is in contact with the upper end surface of the roll sleeve; The inner side of the pressurizing nut is processed with zigzag thread, and the pressurizing nut is installed on the roller shaft. There are six pressure bolt holes evenly distributed; There are 12 pressure bolts in total, which are respectively installed in six pressure bolt holes on the pressure nut and six pressure bolt holes on the roller shaft shoulder; The upper and lower split bearings are composed of an upper end cover, a lower base and a roller. The roller is located in the annular groove of the lower base of the upper and lower split bearing. The upper end cover of the upper and lower split bearing has an annular groove. Split bearings are mounted on the roll shaft between a compression washer and a compression nut. the

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