阅读说明：本技术 一种带轴的串列推力圆锥滚子轴承 (Tandem thrust tapered roller bearing with shaft ) 是由 郝广平 李守财 于 2021-09-10 设计创作，主要内容包括：本发明是一种带轴的串联推力圆锥滚子轴承,包括轴圈(010),座圈(020),外隔圈(030)、单级推力圆锥滚子(040)、内隔圈(050),阶梯轴(060),定位螺杆(070)；单级推力圆锥滚子轴承若干,使每个单级推力圆锥滚子轴承串列在阶梯轴上,拧动定位螺杆,将最后一个单级推力圆锥滚子轴承座圈上的定位孔(021)与阶梯轴的定位孔(062)进行定位,确保阶梯轴与串列轴承组的定位,形成高承载力的带轴型串列推力圆锥滚子轴承。本发明设计科学、合理、富有创意、经济适用性强,稳定可靠,保证了轴承装配精度及承载性能,提高了使用寿命。(The invention relates to a serial tapered roller thrust bearing with a shaft, which comprises a shaft ring (010), a seat ring (020), an outer spacer ring (030), a single-stage tapered roller thrust (040), an inner spacer ring (050), a stepped shaft (060) and a positioning screw (070); the single-stage tapered roller thrust bearings are multiple, each single-stage tapered roller thrust bearing is connected in series on the stepped shaft, the positioning screw rod is screwed, the positioning hole (021) on the race ring of the last single-stage tapered roller thrust bearing and the positioning hole (062) of the stepped shaft are positioned, the positioning of the stepped shaft and the tandem bearing group is ensured, and the high-bearing-capacity tandem tapered roller thrust bearing with the shaft is formed. The invention has scientific, reasonable and creative design, strong economic applicability, stability and reliability, ensures the assembly precision and the bearing performance of the bearing and prolongs the service life.)

1. Single-stage thrust tapered roller bearing, shaft collar (010), outer spacer (030), interior spacer (050), step shaft (060), seat circle (020), positioning bolt (070) is constituteed, single-stage thrust tapered roller bearing is a plurality of, it is through setting up the interior spacer between every single-stage thrust tapered roller bearing, outer spacer, the seat circle, the shaft collar is established ties this a plurality of single-stage thrust cylindrical roller bearing on the step shaft, with positioning screw (070) locating hole (021) on last single-stage tapered roller bearing frame and locating hole (062) location of step shaft, it is whole to form detachable area axle type tandem thrust tapered roller bearing.

2. The tandem tapered roller bearing with shaft according to claim 1, wherein: the shaft is a stepped shaft (060), the end part of the shaft is provided with a key groove (061), the bottom of the key groove is provided with a positioning hole (062), and the shaft is provided with an oil injection hole (063) and an oil outlet hole (064).

3. The tandem tapered roller bearing with shaft according to claim 1, wherein: the roller (040) is conical.

4. The tandem tapered roller bearing with shaft according to claim 1, wherein: the single-stage thrust tapered roller bearing is provided with an oil filling hole (031) and an oil outlet hole (032), and a positioning hole is arranged on a seat ring (021) at the bottom end and is also provided with a positioning bolt (070).

Technical Field

The invention relates to the technical field of rolling bearings, and mainly relates to a shaft-type tandem thrust tapered roller bearing.

Background

The bearing is widely used on some equipment and appliances in various industries, and the types of the single-stage roller bearing are diversified and are as good as possible. The tandem thrust tapered roller bearing with the shaft can bear larger axial load, and the tandem of the bearing on the shaft also enhances the assembly precision and the service life of the shaft.

Disclosure of Invention

The invention aims to provide a belt shaft type tandem thrust tapered roller bearing which can be connected with a single-stage tapered roller bearing, not only has all functions of the tapered roller bearing, but also increases the axial bearing capacity and prolongs the service life.

The invention mainly comprises an outer space ring, a single-stage thrust tapered roller, an inner space ring and a stepped shaft, wherein a plurality of single-stage thrust tapered roller bearings are arranged, a positioning hole on a seat sleeve of the last single-stage thrust tapered roller bearing and a positioning hole of the stepped shaft are positioned, the positioning of the stepped shaft and a tandem bearing group is ensured, and the shaft-type tandem thrust tapered roller bearing is formed.

The invention has the advantages that: a plurality of single-stage tapered roller thrust bearings are connected in series to form a bearing whole, the structural design is compact, the radial section is small, and the axial load capacity is large. The bearing and the shaft are positioned relatively, are not easy to separate and are convenient to disassemble and assemble, each single-stage tapered roller thrust bearing is stressed uniformly, the working efficiency and the precision are improved, and the service life of the whole tandem bearing is prolonged.

Drawings

Fig. 1 is a cross-sectional view of the invention.

FIG. 2 is a cross-sectional view of the inventive on-axis oil injection hole.

FIG. 3 is a cross-sectional view of the inventive gear cup oil filler point.

FIG. 4 is an enlarged cross-sectional view of the bottom locating hole and the locating bolt of the present invention.

Shaft ring (010) in the drawing, seat ring (020), outer spacer ring (030), oil filler point (031), oil outlet (032), tapered roller (040), inner spacer ring (050), step shaft (060), there are locating hole (062) bottom tip keyway (061), epaxial oil filler point (063), oil outlet (064), positioning bolt (070).

Detailed Description

The embodiments of the invention are given below with reference to the accompanying drawings:

as shown in the figure: this embodiment is mainly by single-stage thrust tapered roller bearing, shaft collar (010), outer spacer ring (030), interior spacer ring (050), step shaft (060), seat ring constitution (020), positioning screw (070), single-stage thrust tapered roller bearing is a plurality of, it is through setting up inner spacer ring (050) between every single-stage thrust tapered roller bearing, outer spacer ring (030), seat ring (020) is with this a plurality of single-stage thrust cylindrical roller bearing series connection on the step shaft, with positioning screw (070) with locating hole (021) and the locating hole (062) of step shaft on last single-stage tapered roller bearing seat ring location, form that detachable takes shaft type tandem thrust tapered roller bearing whole (as shown in fig. 1). A race (020) is arranged in the middle of the inner spacer (050), the race (020) is fixedly connected with the inner spacer (050), a shaft ring (010) is arranged on the upper portion of the race (020), and a plurality of conical rollers (040) are arranged on the periphery between the shaft ring (010) and the race (020); the outer spacer ring (030) is arranged at the lower part of the inner spacer ring (050) and is fixedly connected with the inner spacer ring. The end of the stepped shaft forming a single thrust roller bearing structure is provided with a keyway (061) which can be directly butted against a screw shaft of an extruder to bear a strong thrust load. The end part of the stepped shaft close to the stepped shaft is provided with a step which is convenient for positioning the first single-stage tapered roller bearing ring. The bottom of the stepped shaft is provided with a positioning hole (061) which can be positioned with a positioning hole (021) of the last tapered roller bearing race, so that the shaft and the bearing are not easy to separate (as shown in fig. 4).

The shaft has two structures, one is a shaft without a lubricating oil hole (as shown in figure 1), when the shaft is used, the bearing assembly is soaked in thin oil, and circulating oil flows through gaps among parts of the bearing to fully lubricate the roller, the shaft and a race; another type is a shaft (as shown in fig. 2) having oil holes (063) and oil outlet (064) through which oil flows into the bearing to lubricate the components of the bearing when in use.

The bearing has two structures, a single-stage tapered thrust bearing without a lubricating oil hole (as shown in figure 1), a serial bearing is integrally immersed in thin oil when in use, circulating oil flows through gaps among parts of the bearing to be fully lubricated, and the other bearing is a bearing with an oil injection hole (031) and an oil outlet hole (032) on the outer ring of the single-stage tapered roller bearing (as shown in figure 3), and oil can be injected into the oil hole when in use, so that the parts of the bearing are lubricated.