CN201043601Y - Bearing lubrication system for high-speed shaft of speed reducer - Google Patents

Abstract

The utility model relates to a lubricating system of the bearing of the high-speed gear shaft of a reducer, which resolves the problem of that the high-speed gear shaft under the working state of low speed cannot obtain sufficient oil, so that the bearing cannot be thoroughly lubricated. The utility model comprises a lubricating device and an oil return channel, wherein, the lubricating device includes an oil-collecting plate arranged under the high-speed gear shaft, and the opening of the plate is contacted with the oil film of the tooth top of a helical gear, which is nested on a middle shaft; the oil drain of the oil-collecting plate is communicated with the inner side of the bearing of the high-speed gear shaft; the oil return hole of the oil return channel is arranged on a tank body, and the inlet of the hole corresponds to the outer side of the bearing of the high-speed gear shaft. When the reducer operates, the oil film on the tooth top of the helical gear, which is nested on the middle shaft, is scraped by the oil-collecting plate, flows into the plate, flows into the bearing via the oil drain and finally flows back to an oil tank via the oil return channel, thus realizing the lubrication of the bearing, and the high-speed shaft can still obtain sufficient oil even under the working state of low speed, thus ensuring the good lubrication effect of the bearing.

Description

Retarder high speed shaft bearing lubrication system

Technical field

The utility model relates to the lubrication system of retarder bearing, especially the lubrication system of high speed shaft bearing.

Background technique

The bearing of big each transmission shaft of type speed reducer needs good lubricating, the device that some speed adjustable ranges are very big oil-field oil pumper for example particularly, the rotation speed change of its retarder high speed shaft (i.e. the input shaft that is connected with driver) is very big, the structural design difficulty of bearing lubrication system.At present, the high speed shaft bearing lubrication of known retarder comprises as depicted in figs. 1 and 2: casing 1, bearing box 2, high speed shaft 3, bearing 4, high speed shaft gear 5, jack shaft helical gear 6; Spill port X on oil inlet hole Z, oil groove Y, the bearing box on the bearing box.Drive 6 rotations of jack shaft helical gears by high speed shaft 3, the oil sump in casing 1 oil is taken up, jack shaft helical gear 6 and 5 engagements of high speed shaft gear splash in the oil groove Y oil, flow into bearing box 2 by oil inlet hole Z on the bearing box again and finish lubricated to bearing 4.Oil is by directly flowing back to casing 1 behind the bearing 4, part oil enters the bearing box inner chamber by ring-like seal groove and got back in the casing by spill port X on the bearing box.This structure is lubricated also relatively more abundant when rotating speed is higher, but when the jig frequency of pumping unit is hanged down, the level rotating speed is relatively low at a high speed, or lubricant oil is feeding-up, oil is splashed into oil groove, and bearing lubrication is insufficient, damages easily, influence the normal operation of pumping unit, the maintenance cost of retarder is increased.

The model utility content

The purpose of this utility model is in order to solve pumping unit bad problem of high speed shaft bearing lubrication under low jig frequency and the feeding-up operating mode of lubricant oil, a kind of lubrication system that all can lubricate good retarder high speed shaft bearing under various operating modes to be provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted:

A kind of retarder high speed shaft bearing lubrication system comprises preparation device and drainback passage, and described preparation device comprises:

-being arranged in the oil-collecting disk of high speed gear shaft below, it coils mouthful helical gear tooth top oil film of contact sleeve on jack shaft; The oil drain out of this oil-collecting disk communicates with high speed shaft bearing inboard;

-described drainback passage is arranged on the spill port on the casing, the corresponding high speed shaft bearing of the import in this hole outside.

Useful technique effect of the present utility model is: owing to be provided with oil-collecting disk, during retarder operation, being enclosed within oil film on the helical gear tooth top on the jack shaft is scraped by oil-collecting disk and gets, in the inflow dish, flow into bearing through its oil drain out again, again in drainback passage flows back to fuel tank, realization is lubricated to bearing, even high speed shaft under the low speed operating mode, also can obtain sufficient oil mass, guarantee that bearing has good lubricating effect.

Description of drawings

Fig. 1 is existing splash lubrication oil-feed lubrication principle figure

Fig. 2 is existing splash lubrication oil return schematic diagram

Fig. 3 is oil-collecting disk rigging position figure of the present utility model

Fig. 4 is lubrication order figure of the present utility model

Fig. 5 is oil-collecting disk of the present utility model and helical gear location diagram

Fig. 6 is an oil-collecting disk structural drawing of the present utility model

Code name implication among Fig. 3 to Fig. 6: 10-high speed gear shaft; The 20-bearing box; The 30-bearing; The 40-casing; The 50-oil-collecting disk; The 60-helical gear; The 70-plug; A, B, C, D-are spill port.

Embodiment

Referring to Fig. 3 to Fig. 6:

The preparation device of this lubrication system comprises: be arranged in the oil-collecting disk 50 of high speed gear shaft 10 belows, its dish mouthful helical gear 60 tooth top oil films of contact sleeve on jack shaft; The oil drain out of this oil-collecting disk 50 communicates with high speed shaft bearing 30 inboards.

The drainback passage of this lubrication system comprises: be arranged on spill port C, D on the reduction case 40, be arranged on spill port A, the B of bearing box 20 bottoms, this hole communicates with spill port C, D.

The installation step of native system: at first oil-collecting disk 50 is fixed on high speed gear shaft 10 belows, and makes the height of oil-collecting disk 50 be higher than the outer ring of bearing 30, can flow into bearing 30 inside smoothly to guarantee the oil in the oil-collecting disk 50.The edge of oil-collecting disk 50 should be convenient to the lubricant film on helical gear 60 tooth tops is scraped in the oil-collecting disk 50 near helical gear 60, to guarantee having sufficient oil mass to enter bearing 30.

The greasing of native system: lubricant oil flows into bearing 30 through its oil drain out in the oil-collecting disk 50, the lubricant oil that passes bearing 30 spill port B from the bearing box 20 flows into the vertical spill port C on the casing 40, flow back in the casing 40 through cross scavenging hole D again, finish lubricated circulation.Superfluous oil flows into vertical spill port C on the casing from spill port A after entering the bearing box inner chamber, and cross scavenging hole D flows back in the casing 4 on casing again.Cross scavenging hole D one end is by plug 70 sealings, and an end communicates with box house, guarantees that lubricant oil returns fuel tank smoothly.

Claims (1)

1. a retarder high speed shaft bearing lubrication system comprises preparation device and drainback passage, it is characterized in that described preparation device comprises:

-being arranged in the oil-collecting disk of high speed gear shaft below, it coils mouthful helical gear tooth top oil film of contact sleeve on jack shaft; The oil drain out of this oil-collecting disk communicates with high speed shaft bearing inboard;

-described drainback passage is arranged on the spill port on the casing, the corresponding high speed shaft bearing of the import in this hole outside.

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