CN214617776U - High-speed shaft device of abrasionproof leak protection oil reducing gear box - Google Patents

Abstract

The utility model relates to an abrasionproof leak protection oil reducing gear box high-speed shaft device, including the part set up at the reducing gear box inside part set up high-speed shaft outside the reducing gear box, fixed high-speed shaft's self-aligning bearing, prevent the gland of grey dirt-proof skeleton seal circle and fixed self-aligning bearing installation skeleton sealing washer, self-aligning bearing circumference sets up between high-speed shaft and reduction box, and skeleton sealing washer sets up in the outside of self-aligning shaft and around high-speed shaft circumference setting, is equipped with a bush between skeleton sealing washer and the high-speed shaft, bush and high-speed shaft interference fit static seal, form rotary seal with the skeleton sealing washer in order to prevent that lubricating oil from spilling outside the reducing gear box along high-speed shaft. The utility model discloses abrasionproof leak protection oil.

Description

High-speed shaft device of abrasionproof leak protection oil reducing gear box

Technical Field

The utility model relates to a high-speed axle device of abrasionproof leak protection oil reducing gear box.

Background

At present, the known main structure of the input part of a large reduction gearbox is formed by assembling a framework sealing ring, a gland, a self-aligning roller bearing and a high-speed shaft. The gland and the framework sealing ring are in interference fit to realize static sealing, the lip of the framework sealing ring is in interference fit with the high-speed shaft to realize rotary sealing, and two interference fits of the inner ring and the outer ring of the framework sealing ring are adopted to prevent oil leakage and dust from entering the reduction gearbox. However, the hardness of the sealing contact section of the high-speed shaft and the framework is relatively low, and a circle of groove is abraded on the high-speed rotating shaft, so that the strength of the high-speed shaft is reduced and the sealing fails. Meanwhile, the bearing has a gap, when the high-speed shaft rotates, the high-speed shaft can radially jump to form a discontinuous gap with the framework sealing ring, the high-speed shaft jumps to form a conical rotating track, and an outward centripetal force is generated, so that bearing lubricating oil flows out of the reduction gearbox along with the high-speed shaft. Abrasion and oil leakage of a high-speed shaft of a large-sized speed reducer are difficult problems in various industries, normal production of enterprises is influenced, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model discloses implement and provide a simple structure, with low costs abrasionproof leak protection oil reducing gear box high-speed axle device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an abrasionproof leak protection oil reducing gear box high-speed axle device, includes that the part sets up high-speed axle, the self-aligning bearing of fixed high-speed axle, the dustproof skeleton sealing washer of dust prevention and the gland of fixed self-aligning bearing installation skeleton sealing washer of reducing gear box internal portion outside the reducing gear box, self-aligning bearing circumference sets up between high-speed axle and reduction box, and the skeleton sealing washer sets up in the outside of self-aligning axle and around high-speed axle circumference, is equipped with a bush between skeleton sealing washer and the high-speed axle, bush and high-speed axle interference fit static seal, form rotary seal with the skeleton sealing washer in order to prevent that lubricating oil from spilling outside the reducing gear box along the high-speed axle.

Preferably, the bushing and the high-speed shaft are installed in a shrink fit mode.

Preferably, the bushing part is of a conical structure, the conical structure is arranged in a cavity between the self-aligning bearing and the framework sealing ring, the outer side surface of the conical structure faces the framework sealing ring, the bottom surface of the conical structure is attached to the outer side surface of the self-aligning bearing, and the diameter of the bushing at the conical structure is gradually increased from outside to inside.

Preferably, the outer surface of the bushing is polished and heat treated.

Preferably, the self-aligning bearing is provided with an oil filling hole.

Preferably, one side of the gland is arranged on the self-aligning bearing outer ring, and the other side of the gland is fixedly arranged with the reduction gearbox through bolt matching.

Compared with the prior art, the utility model, its advantage does: a bushing is arranged between the high-speed shaft and the framework sealing ring, the framework sealing ring is matched with the gland and the bushing to form sealing, so that oil leakage is prevented, the expansion force generated by the interference fit installation of the bushing and the high-speed shaft can prevent oil leakage between contact surfaces, and meanwhile, the bushing and the high-speed shaft cannot generate relative motion; the bushing is matched with the high-speed shaft in a hot sleeve mode, and the bushing is subjected to heat treatment and outer surface polishing treatment, so that the contact surface of the bushing matched with the framework sealing ring has higher hardness and smoothness, and is more wear-resistant and reduces the wear of the framework sealing ring; the section, close to the self-aligning bearing, of the bushing is of a conical structure, the conical structure is installed in a cavity formed by the self-aligning bearing and the framework sealing ring, the outer surface of the conical structure is attached to the framework sealing ring, the ground is attached to the self-aligning bearing, meanwhile, the diameter is gradually increased from outside to inside, namely, the diameter is larger as the section is close to the self-aligning bearing, the conical structure design is adopted, self-suction force can be generated during high-speed operation, lubricating oil flowing out of the self-aligning bearing is sucked back into the bearing, and the lubricating oil is prevented from leaking out of the reduction gearbox along the high-speed shaft; this structural design is simple, with low costs, but can high-efficient abrasionproof and leak protection oil.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of the present invention.

Fig. 3 is a schematic view of the structure of the bushing of the present invention.

Fig. 4 is a schematic view of the installation structure of the bushing and the high-speed shaft of the present invention.

Wherein, 1, a reduction box; 2. a high speed shaft; 3. a self-aligning bearing; 4. a skeleton sealing ring; 5. a gland; 6. a bushing; 7. surface A; 8. b surface; 9. c surface; 10. d surface; 11. and an oil filling hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the method or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," "retained," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other at the inner sections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figures 1 and 4, the device for preventing abrasion and oil leakage of the high-speed shaft 2 of the reduction gearbox 1 comprises a section of high-speed shaft 2 arranged in the reduction gearbox 1 and exposed outside the reduction gearbox 1, a self-aligning bearing 3 for fixing the high-speed shaft 2, a dustproof skeleton sealing ring 4 and a gland 5 for fixing the skeleton sealing ring 4 on the self-aligning bearing 3, wherein the high-speed shaft 2 is used for transmitting external motor kinetic energy into the reduction gearbox 1, the self-aligning bearing 3 is circumferentially arranged between the high-speed shaft 2 and the reduction gearbox 1, the skeleton sealing ring 4 is arranged outside the self-aligning bearing 3 and circumferentially arranged around the high-speed shaft 2, a lining 6 is arranged between the skeleton sealing ring 4 and the high-speed shaft 2, the lining 6 is in interference fit with the high-speed shaft 2, is statically sealed and forms rotary seal with the skeleton sealing ring 4 to prevent lubricating oil from leaking out of the reduction gearbox 1 along the high-speed shaft 2, and the skeleton sealing ring 4 is arranged around the high-speed shaft 2, Bushing 6 and gland 5 all set up in high-speed shaft 2 and 1 junction of reducing gear box, and the cooperation forms sealedly, prevents the oil leak, is equipped with a bushing 6 between high-speed shaft 2 and skeleton seal 4, and the tight power of expanding that bushing 6 and 2 interference fit installations of high-speed shaft produced can prevent the oil leak between the contact surface, and bushing 6 and high-speed shaft 2 can not produce relative motion simultaneously, and self-aligning bearing 3 installs and holds at 2 two ends of high-speed shaft, makes the steady rotation of high-speed shaft 2 prevent the drunkenness.

Further, the bushing 6 and the high-speed shaft 2 are installed in a matched mode in a hot sleeve mode, and the bushing 6 is subjected to heat treatment and outer surface polishing treatment, so that the contact surface of the bushing 6 matched with the framework sealing ring 4 has high hardness and smoothness, and is more wear-resistant and capable of reducing the abrasion of the framework sealing ring 4.

Furthermore, as shown in fig. 1 and 4, the bushing 6 is partially of a tapered structure, the tapered structure is disposed in the cavity between the self-aligning bearing 3 and the skeleton sealing ring 4, the outer side surface of the tapered structure is disposed in the cavity formed between the skeleton sealing ring 4 and the self-aligning bearing 3 and faces the skeleton sealing ring 4, the bottom surface of the tapered structure is attached to the outer side surface of the self-aligning bearing 3, the diameter of the bushing 6 at the tapered structure is gradually increased from outside to inside, according to the principles of linear velocity and angular velocity, the linear velocity is also increased as the diameter on the tapered surface is increased, Va is larger than Vb, a is a point where the bushing 6 is close to the self-aligning bearing 3, b is a point where the bushing 6 is far away from the self-aligning bearing 3, a rotating moment M is generated under the action of the velocity difference, when the lubricating oil drops on the outer side surface of the tapered structure of the bushing 6 from the bearing roller, the lubricating oil rotates upward to return to the bearing roller, after re-lubrication, the lubricating oil flows into the reduction gearbox 1, the rotating speed of the high-speed shaft 2 is more than 1000 r/min, the effect that the lubricating oil is sucked up along the conical surface is good, and a good oil leakage prevention effect is achieved.

Further, the outer surface of the lining 6 is polished and heat treated, so that the contact surface of the lining 6 matched with the framework sealing ring 4 has higher hardness and smoothness, and is more wear-resistant and reduces the wear of the framework sealing ring 4.

Further, as shown in fig. 1, an oil filling hole 11 is provided on the self-aligning bearing 3 for uninterrupted lubrication of the bearing by the lubricating oil.

Further, as shown in fig. 1, a boss on one side of the gland 5 is mounted on the outer ring of the self-aligning bearing 3 to prevent the gland from moving, and the other side of the gland is sleeved on a bearing hole of the reduction gearbox 1 in a clearance fit manner and then fixed on the body of the reduction gearbox 1 through bolts.

As shown in fig. 4, the bushing 6 of the present invention has a contact surface a 7 with the high speed shaft 2, a B surface 8 matched with the skeleton seal ring 4, a C surface 9 disposed in a cavity formed by the skeleton seal ring 4 and the self-aligning bearing 3, and a D surface 10 attached to the self-aligning bearing 3, as shown in fig. 1 to 4, the expansion force generated after the interference fit between the bushing a surface 7 and the high speed shaft 2 can prevent oil leakage between the contact surfaces, and meanwhile, the bushing 6 and the high speed shaft 2 do not generate relative motion; the lining 6 is subjected to heat treatment and polishing treatment, so that the B surface 8 has higher hardness, higher wear resistance and higher smoothness, and the framework sealing ring 4 can be prevented from being worn; d face 10 and self-aligning bearing 3 press close to, C face 9 is located the cavity between self-aligning bearing 3 and the skeleton seal circle 4, C face 9 adopts the design of toper face, according to linear velocity and angular velocity principle, the big linear velocity of diameter also more Va > Vb on the conical surface, can produce rotating torque M under the effect of speed difference, when lubricating oil drips on bush C face 9 from the bearing roller, receive the rotatory upward movement of rotating torque effect meeting, thereby get back to the bearing roller again, flow into in reducing gear box 1 after relubricating, 2 rotational speeds of high-speed shaft are more than 1000 commentaries on classics/minute, the effect that lubricating oil up-sucked along the conical surface will be fine, play fine leak protection oil effect.

It should be noted that the above embodiments are merely representative examples of the present invention. The utility model can also have a plurality of deformations. Any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims (6)

1. The utility model provides an abrasionproof leak protection oil reducing gear box high-speed axle device which characterized in that: including the part set up in reducing gear box (1) inside setting high-speed shaft (2) outside reducing gear box (1), self-aligning bearing (3) of fixed high-speed shaft (2), dust-proof skeleton sealing washer (4) and fixed self-aligning bearing (3) gland (5) of installation skeleton sealing washer (4), self-aligning bearing (3) circumference sets up between high-speed shaft (2) and reducing gear box (1), and skeleton sealing washer (4) set up in the outside of self-aligning bearing (3) and around high-speed shaft (2) circumference setting, is equipped with a bush (6) between skeleton sealing washer (4) and high-speed shaft (2), bush (6) and high-speed shaft (2) interference fit static seal, form rotary seal with skeleton sealing washer (4) in order to prevent that lubricating oil from leaking outside reducing gear box (1) along high-speed shaft (2).

2. The device of claim 1, wherein the bushing (6) is installed with the high-speed shaft (2) in a shrink fit manner.

3. The high-speed shaft device of the anti-abrasion and oil-leakage-proof reduction gearbox is characterized in that the bushing (6) is of a conical structure, the conical structure is arranged in the cavity between the self-aligning bearing (3) and the framework sealing ring (4), the outer side face of the conical structure faces the framework sealing ring (4), the bottom face of the conical structure is attached to the outer side face of the self-aligning bearing (3), and the diameter of the bushing (6) at the conical structure is gradually increased from outside to inside.

4. The high-speed shaft device of the reduction gearbox for preventing abrasion and oil leakage according to claim 2, wherein the outer surface of the lining (6) is subjected to polishing treatment and heat treatment.

5. The high-speed shaft device of the anti-abrasion and oil leakage-proof reduction gearbox according to claim 1, wherein an oil filling hole is formed in the self-aligning bearing (3).

6. The high-speed shaft device of the anti-abrasion and oil leakage-proof reduction gearbox according to claim 1, wherein one side of the gland (5) is mounted on an outer ring of the self-aligning bearing (3), and the other side of the gland is fixedly mounted with the reduction gearbox (1) through bolt fitting.

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