Oil leakage prevention double-side shear pinch roll structure

Abstract

The utility model discloses an oil leakage prevention double-side shear pinch roll structure which comprises a roll head, a taper sleeve, a roll shaft, a roll end bearing sealing assembly, a roller, a shaft end bearing sealing assembly, a reduction gearbox, a coupler and a motor, and is characterized in that the roll end bearing sealing assembly comprises a framework seal I and a framework seal II; the shaft end bearing sealing assembly comprises two third framework seals. According to the structure and the roller end, a double-framework sealing and single-framework sealing combined mode is adopted, an independent glycerin lubricating structure is arranged, the phenomenon of oil leakage of the roller head can be effectively eradicated, stable operation of the pinch roller in the steel plate shearing process is guaranteed, and the steel plate shearing quality is reduced. The shaft end double-framework sealing structure effectively prevents leakage of reduction gearbox oil and can lubricate the shaft end conical bearing, the injection amount of reduction gearbox oil is reduced, compared with an original design mode, the roller shaft in the roller has no oil resistance, the roller shaft rotates more flexibly, and the motor efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical machinery, and in particular relates to an oil leakage-proof double-sided shearing and pinching roller structure. Background Art

[0002] In the field of metallurgical steel rolling, double-sided shears are important equipment in the shearing process of finished steel plates, and pinch rollers are key components of double-sided shearing equipment. The pinch rollers of the original double-sided shears often leak oil from the roller head end face. During the process of the pinch rollers conveying steel plates, the oil on the roller surface adheres to the surface of the steel plate. During shearing, due to the influence of the oil on the pinch roller surface, the pinch rollers slip during the process of conveying steel plates, resulting in shearing failures, which has a certain impact on product quality. Therefore, solving the problem of pinch roller oil leakage has been a problem for equipment maintenance personnel for many years. In response to this phenomenon, in the short term, the only way to temporarily avoid the generation of steel plate oil is to shut down and wipe the roller surface regularly. In the long term, the pinch rollers need to be disassembled and the seals replaced during the annual maintenance period for processing, but it is also impossible to prevent the pinch rollers from leaking and seeping oil after long-term operation. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides an oil-leakage-proof double-sided shearing pinch roller structure with a simple structure, low investment and stable operation. On the one hand, it avoids the influence of pinch roller oil leakage on the shearing quality of steel plates and reduces the generation of scrap steel plates; on the other hand, it also reduces the manpower consumption of wiping the pinch rollers and reduces the workload of equipment maintenance.

[0004] In order to solve the above problems, the technical scheme adopted by the utility model is as follows: an oil leakage-proof double-sided shearing and pinching roller structure, including a roller head, a tapered sleeve, a roller shaft, a roller end bearing sealing assembly, a roller, a shaft end bearing sealing assembly, a reduction box, a coupling and a motor, characterized in that: the roller end bearing sealing assembly includes: a cylindrical bearing, a positioning ring 1 and a shaft clamping ring are arranged on the right side of the cylindrical bearing, and a wear-resistant ring and a bearing gland are arranged on the left side; a skeleton seal 1 and a skeleton seal 2 are arranged between the wear-resistant ring and the bearing gland; a spacer ring is also arranged in the bearing gland, and the spacer ring is located between the skeleton seal 1 and the skeleton seal 2; a sealing gland is arranged on the left side of the bearing gland; a dustproof ring is arranged on the outer ring of the sealing end cap;

[0005] The shaft end bearing sealing assembly includes: a tapered bearing is installed at the shaft end of the roller shaft, and the tapered bearing is embedded in the bearing sleeve; a positioning ring three is provided on the left side of the inner ring of the tapered bearing, and a positioning ring two is provided on the right side; a bearing pressure cover two is provided on the left side of the outer ring of the tapered bearing, and a positioning cover is provided on the right side; two skeleton seals three are provided inside the bearing pressure cover two.

[0006] Furthermore: the right end of the roller shaft cooperates with the large gear of the reduction box through a positioning key, and a pressure cover is provided on the right end face of the roller shaft, and the pressure cover is fixed to the right end face of the roller shaft by screw four; the left end of the reduction box is fixed to the right end of the roller through a double-headed stud and a nut, and a sealing ring two is provided on the contact surface between the reduction box and the roller; an intermediate flange is provided at the right end of the reduction box, and is connected to the motor through multiple bolts three, and the motor output shaft and the reduction box input shaft are connected together through a coupling.

[0007] The beneficial effects of the utility model are as follows: the oil-leakage-proof double-sided shearing pinch roller structure adopts a combination of double-frame seal and single-frame seal at the roller end, and is equipped with an independent glycerin lubrication structure, which can effectively prevent the roller head from leaking oil, ensure the stable operation of the pinch roller during the steel plate shearing process, and reduce the quality of steel plate shearing. The double-frame seal structure at the shaft end effectively prevents the oil leakage of the reduction box, and can also lubricate the tapered bearing at the shaft end, reducing the injection amount of the reduction box oil. Compared with the original design method, the roller shaft in the roller drum has no oil resistance, the roller shaft rotates more flexibly, and the motor efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the implementation structure of the utility model;

[0009] Figure 2 This is a schematic diagram of the roller end structure of the utility model;

[0010] Figure 3 This is a schematic diagram of the shaft end structure of the utility model;

[0011] Figure 4 It is a schematic diagram of the assembly process of the utility model.

[0012] Among them, 1-roller head, 2-taper sleeve, 3-roller shaft, 4-roller end bearing seal assembly, 5-roller, 6-shaft end bearing seal assembly, 7-reduction box, 8-coupling, 9-motor, 10-sleeper, 11-level meter, 12-platform, 13-bottom plate, 14-gasket, 15-stop iron;

[0013] 4.1-dustproof ring, 4.2-sealing gland 1, 4.3-bolt 1, 4.4-skeleton seal 1, 4.5-bolt 2, 4.6-sealing ring 1, 4.7-wear-resistant ring, 4.8-spacer ring, 4.9-bearing gland, 4.10-skeleton seal 2, 4.11-cylindrical bearing, 4.12-positioning ring 1, 4.13-shaft retaining spring;

[0014] 5.1-Oil cup, 5.2-Lower screw plug, 5.3-Upper screw plug, 5.4-Stud, 5.5-Second sealing ring, 5.6-Nut;

[0015] 6.1-bearing gland II, 6.2-frame seal III, 6.3-hole snap ring, 6.4-seal ring III, 6.5-screw I, 6.6-bearing jacket, 6.7-tapered bearing, 6.8-stop washer, 6.9-lock nut, 6.10-positioning ring II, 6.11-positioning cover, 6.12-screw II, 6.13-screw III, 6.14-seal ring IV, 6.15-positioning ring III;

[0016] 7.1-large gear, 7.2-screw four, 7.3-pressure cover, 7.4-locating key, 7.5-bolt three, 7.6-middle flange. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, the utility model provides an oil leakage-proof double-sided shearing pinch roller structure, comprising a roller head 1, a taper sleeve 2, a roller shaft 3, a roller end bearing seal assembly 4, a roller 5, a shaft end bearing seal assembly 6, a reduction box 7, a coupling 8 and a motor 9, wherein:

[0018] The roller end bearing sealing assembly comprises: a cylindrical bearing 4.11, a positioning ring 1 4.12 and a shaft retaining ring 4.13 are arranged on the right side of the cylindrical bearing 4.11, and a wear-resistant ring 4.7 and a bearing gland 4.9 are arranged on the left side; a skeleton seal 1 4.4 and a skeleton seal 2 4.10 are arranged between the wear-resistant ring 4.7 and the bearing gland 4.9; a spacer ring 4.8 is also arranged in the bearing gland 4.9, and the spacer ring 4.8 is located between the skeleton seal 1 4.4 and the skeleton seal 2 4.10; a sealing gland 4.2 is arranged on the left side of the bearing gland 4.9; and a dustproof ring 4.1 is arranged on the outer ring of the sealing end cap 4.2;

[0019] The shaft end bearing sealing assembly comprises: a tapered bearing 6.7 is installed at the shaft end of the roller shaft 2, and the tapered bearing 6.7 is embedded in the bearing sleeve 6.6; a positioning ring three 6.15 is provided on the left side of the inner ring of the tapered bearing 6.7, and a positioning ring two 6.10 is provided on the right side; a bearing pressure cover two 6.1 is provided on the left side of the outer ring of the tapered bearing 6.7, and a positioning cover 6.11 is provided on the right side; two skeleton seals three 6.2 are provided inside the bearing pressure cover two 6.1.

[0020] Preferably: the right end of the roller shaft 2 cooperates with the large gear of the reduction box 7 through a positioning key 7.4, a pressure cover 7.3 is provided on the right end face of the roller shaft 2, and the pressure cover 7.3 is fixed to the right end face of the roller shaft 3 through a screw four 7.2; the left end of the reduction box 7 is fixed to the right end of the roller 5 through a stud 5.4 and a nut 5.5, and a sealing ring two 5.5 is provided on the contact surface between the reduction box 7 and the roller 5; the right end of the reduction box 7 is provided with an intermediate flange 7.6, and is connected to the motor 9 through a plurality of bolts three 7.5, and the output shaft of the motor 9 and the input shaft of the reduction box 7 are connected together through a coupling 8.

[0021] Preferably, a lower thread plug 5.2 is provided below the middle of the roller 5, and an upper thread plug 5.3 is provided above the middle of the roller 5.

[0022] Preferably, an oil cup 5.1 is also provided on the roller 5, and the oil cup 5.1 is connected to the cavity where the cylindrical bearing 4.11 is located through the lubricating oil hole, so that the lubricating oil reaches the position of the cylindrical bearing to achieve lubrication. Example

[0023] The present embodiment is an oil-leakage-proof double-sided shearing and pinching roller structure, comprising a roller head 1, a tapered sleeve 2, a roller shaft 3, a roller end bearing seal assembly 4, a roller drum 5, a shaft end bearing seal assembly 6, a reduction box 7, a coupling 8, and a motor 9. The outer circle of the roller head 1 is a cylindrical surface, which is in contact with the steel plate, and the inner hole is a conical surface tightly matched with the outer conical surface of the tapered sleeve 2, and the inner hole of the tapered sleeve 2 is a cylindrical surface tightly matched with the outer circle of the roller end of the roller shaft 3; the cylindrical bearing 4.11 is matched with the roller shaft 3 and the roller drum 5 at the same time. In order to ensure the positioning of the inner ring of the cylindrical bearing 4.11, a positioning ring 4.12 and a shaft clamping ring 4.13 are provided on the right side thereof. In order to ensure the positioning of the inner and outer rings on the left side of the cylindrical bearing 4.11, a wear ring 4.7 and a bearing cover 4.9 are provided on the left side thereof; the cylindrical bearing 4.11 is lubricated by injecting glycerin through the oil cup 5.1. In order to ensure that the lubricating oil does not overflow from the left side of the cylindrical bearing 4.11, a skeleton seal 1 4.4 and a skeleton seal 2 4.10 are installed between the wear ring 4.7 and the bearing cover 4.9. The skeleton seal 1 4.4 is composed of two groups and arranged back to back. The opening of the skeleton seal 2 4.10 faces the bearing side, and the spacer ring 4.8 is installed. In the bearing gland 4.9, it plays a role in spacing and positioning the skeleton seal 1 4.4 and skeleton seal 2 4.10. The seal gland 4.2 is fixed to the left side of the bearing gland 4.9 by multiple bolts 1 4.3. In order to prevent iron oxide and dust from entering the gap, a dust ring 4.1 is installed on the outer ring of the seal end cover 4.2, and the bearing gland 4.9 is fixed to the left end of the roller 5 by multiple bolts 2 4.5. Based on preventing oil leakage between the matching surface of the bearing gland 4.9 and the roller 5, a seal ring 1 4.6 is provided. A lower screw plug 5.2 is provided at the lower middle part of the roller 5, which is convenient for the discharge of waste glycerin after disassembly. An upper screw plug is provided at the upper middle part of the roller 5, which is convenient for the injection of new glycerin from the oil cup 5.1 after disassembly.

[0024] In this embodiment, a tapered bearing 6.7 is mounted on the shaft end of the roller shaft 2. A positioning ring 3 6.15 is provided on the left side of the inner ring of the tapered bearing 6.7, and a positioning ring 2 6.10 is provided on the right side. Axial positioning is achieved by a locking nut 6.9, and a brake washer 6.8 is used to prevent the locking nut from loosening. The entire tapered bearing 6.7 is also embedded in a bearing sleeve 6.6, and the bearing sleeve is also embedded in the right side end of the roller 5. In order to ensure the positioning of the outer ring of the tapered bearing 6.7, a bearing pressure cover 2 6.1 is provided on its left side and fixed to the bearing sleeve 6.6 by a screw 1. A positioning cover 6.11 is provided on its right side and fixed to the bearing sleeve 6.6 and the right end face of the roller 5 by screws 2 6.12 and 3 6.13. Two skeleton seals 3 6.2 are installed inside the bearing gland 2. The opening side of the skeleton seal 3 6.2 faces the tapered bearing 6.7. To prevent the skeleton seal 3 6.2 from moving, a hole retaining ring 6.3 is provided on its right side. To ensure the sealing of the outer ring of the bearing sleeve 6.6, a sealing ring 4 6.14 is provided on its outer circle. The right end of the roller shaft 2 is matched with the large gear of the reduction box 7 through the positioning key 7.4. To prevent the large gear 7.1 and the positioning key 7.4 from moving to the right, a gland 7.3 is provided on the right end face of the roller shaft 2 and fixed to the right end face of the roller shaft 3 through the screw 4 7.2. The left end of the reduction box 7 is fixed to the right end of the roller 5 through the stud 5.4 and the nut 5.5. To prevent the gear oil in the reduction box 7 from overflowing, a sealing ring 2 5.5 is provided on its contact surface. The right end of the reduction box 7 is provided with an intermediate flange 7.6, which is connected to the motor 9 through a plurality of bolts 7.5. The output shaft of the motor 9 is connected to the input shaft of the reduction box 7 through a coupling 8 to ensure the synchronization of the transmission.

[0025] The anti-oil leakage double-sided shearing pinch roller structure of this embodiment is mainly used in double-sided shearing equipment for medium and thick plates. The cylindrical bearing 4.11, tapered bearing 6.7 and reduction box 7 of the roller shaft 3 of the original double-sided shearing pinch roller structure are all lubricated with thin oil. Due to the design defects of the roller end bearing seal assembly, thin oil leaks from the sealing cover 4.2, causing the outer circle and right end face of the roller head 1 to be sticky with oil. This embodiment adopts a double skeleton seal 1 4.4 and a single skeleton seal 2 4.10 structure, and uses glycerin to lubricate this bearing through an oil cup 5.1; because the design inner diameter of the single skeleton seal 2 4.10 is close to the outer diameter of the inner ring of the cylindrical bearing 4.11, it is ensured that the lubricating oil is not easy to leak from here. Even if a small amount of glycerin seeps out, the double skeleton seal 1 4.4 is further sealed to avoid the poor sealing effect of the original thin oil lubrication method. Figure 3The double skeleton seal 3 6.2 and the seal ring 4 6.14 effectively seal the lubricating oil of the tapered bearing 6.7, preventing the thin oil lubricated by the reduction box 7 from flowing into the roller 5. Even if a small amount of lubricating thin oil seeps into the roller 5, it can be discharged from the lower screw plug 5.2 at regular intervals. Therefore, the structure of the utility model fundamentally solves the oil leakage problem of the double-sided shearing and pinching roller, reduces the use of thin oil and leakage in the original bearing lubrication structure, and avoids the damage of the bearing and the reduction box due to excessive oil leakage.

[0026] like Figure 4 As shown, the assembly method of the anti-leakage oil double-sided shear pinch roller structure of this embodiment is as follows:

[0027] (1) During assembly, first place the roller shaft 3 squarely on the ground, raise and level both ends with sleepers 10, and then install the parts of the roller end bearing seal assembly 4 into the left end of the roller shaft 3 in sequence from left to right;

[0028] (2) Then install the parts of the shaft end bearing seal assembly 6 (except the positioning cover 6.11, screw 2 6.12, screw 3 6.13) into the right end of the roller shaft 3 in sequence;

[0029] (3) Stand the assembled roller shaft 3 on a horizontal plane, with the roller end in contact with the bottom plate 13. The operator stands on the platform 12 and uses a level to check the verticality of the roller shaft to facilitate the adjustment of the gasket 14. Then, use a lifting tool to insert the roller 5 onto the roller shaft 3, making sure that the bearing gland 4.9 is aligned with the lower end surface of the roller 5, and the end surface of the bearing sleeve 6.6 is aligned with the upper end surface of the roller 5. Then, install and tighten the bolt 2 4.5, screw 2 6.12 and screw 3 6.13.

[0030] (4) Place the assembled roller shaft 3 and roller 5 on the horizontal ground, and place the sleepers on the ground, then install the large gear 7.1 and the positioning key 7.4, and finally install the gland 7.3 and the screw 4 7.2;

[0031] (5) Adjust the position of the sleeper 10, use the lifting tool to align the end face of the reduction box 7 with the end face of the roller 5, and install the stud 5.4 and the nut 5.6;

[0032] (6) First install the cone sleeve 2 into the left end of the roller shaft 3, then heat the roller head 1 to 120℃ and use the lifting tool to put it on the cone sleeve. Make sure that the right end face of the roller head 1 is 35mm away from the right end face of the cone sleeve 2 after assembly. Then, place a wet cloth on the outer circle of the roller head 1 to slowly cool it to ensure that the roller head 1, cone sleeve 2 and roller shaft 3 are fastened together;

[0033] (7) Adjust the position of the sleeper 10, then install the corresponding two halves of the coupling 8 on the input shaft of the reduction box 7 and the output shaft of the motor 9, then use the lifting tool to align the motor 9 and the intermediate flange 7.6 with the reduction box 7, and install the bolt three 7.5, and finally install and tighten the bolts of the coupling 8;

[0034] (8) Inject glycerin into the oil cup 5.1 of roller 5. Note that the amount of oil is about 400 ml. Inject 320# gear oil into the reduction box until the oil level is above the oil mirror.

[0035] The assembly method of this embodiment adopts a method that combines horizontal assembly and vertical assembly. The horizontal assembly is conducive to the verification of assembly dimensions and the inspection of sealing. The vertical assembly of rollers is conducive to ensuring the alignment of the roller shaft and the roller axis, and the falling form of the roller's own weight can be used to check whether there is any jamming on the mating surface. The structure of this embodiment is simple and efficient in the assembly method, which avoids the problem of difficult guidance during the completely horizontal assembly process, eliminates the use of impact methods that can easily cause damage to parts, and greatly reduces the labor intensity of assemblers.

Claims

1. An oil-leakage-proof double-sided shearing pinch roller structure, comprising a roller head (1), a tapered sleeve (2), a roller shaft (3), a roller end bearing seal assembly (4), a roller (5), a shaft end bearing seal assembly (6), a reduction box (7), a coupling (8) and a motor (9), characterized in that: The roller end bearing sealing assembly comprises: a cylindrical bearing (4.11), a positioning ring 1 (4.12) and a shaft retaining ring (4.13) are arranged on the right side of the cylindrical bearing (4.11), and a wear-resistant ring (4.7) and a bearing gland (4.9) are arranged on the left side; a skeleton seal 1 (4.4) and a skeleton seal 2 (4.10) are arranged between the wear-resistant ring (4.7) and the bearing gland (4.9); a spacer ring (4.8) is also arranged in the bearing gland (4.9), and the spacer ring (4.8) is located between the skeleton seal 1 (4.4) and the skeleton seal 2 (4.10); a sealing gland (4.2) is arranged on the left side of the bearing gland (4.9); and a dustproof ring (4.1) is arranged on the outer ring of the sealing gland (4.2); The shaft end bearing seal assembly comprises: a tapered bearing (6.7) is installed at the shaft end of the roller shaft (3), and the tapered bearing (6.7) is embedded in a bearing sleeve (6.6); a positioning ring three (6.15) is provided on the left side of the inner ring of the tapered bearing (6.7), and a positioning ring two (6.10) is provided on the right side; a bearing pressure cover two (6.1) is provided on the left side of the outer ring of the tapered bearing (6.7), and a positioning cover (6.11) is provided on the right side; and two skeleton seals three (6.2) are provided inside the bearing pressure cover two (6.1).

2. The anti-oil leakage double-sided shearing pinch roller structure according to claim 1, characterized in that: The right end of the roller shaft (3) is matched with the large gear of the reduction box (7) through a positioning key (7.4), and a pressure cover (7.3) is provided on the right end surface of the roller shaft (3), and the pressure cover (7.3) is fixed to the right end surface of the roller shaft (3) through a screw four (7.2); the left end of the reduction box (7) is fixed to the right end of the roller (5) through a stud (5.4) and a nut (5.6), and a sealing ring two (5.5) is provided on the contact surface between the reduction box (7) and the roller (5); the right end of the reduction box (7) is provided with an intermediate flange (7.6), and is connected to the motor (9) through a plurality of bolts three (7.5), and the output shaft of the motor (9) and the input shaft of the reduction box (7) are connected together through a coupling (8).

3. The anti-oil leakage double-sided shearing pinch roller structure according to claim 1, characterized in that: A lower thread plug (5.2) is provided below the middle of the roller (5), and an upper thread plug (5.3) is provided above the middle of the roller (5).

4. The anti-oil leakage double-sided shearing pinch roller structure according to claim 1, characterized in that: An oil cup (5.1) is also provided on the roller (5), and the oil cup (5.1) is connected to the cylindrical bearing (4.11) through a lubricating oil hole.

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