CN-121976335-A - Textile spindle and lower support thereof

CN121976335ACN 121976335 ACN121976335 ACN 121976335ACN-121976335-A

Abstract

The invention provides a spinning spindle and a lower support thereof, wherein the lower support comprises a spindle foot and an elastic tube, a vibration absorbing coil spring, a positioning sleeve and a buffer leaf spring which are coaxial are sequentially arranged in the spindle foot from top to bottom, a coaxial thrust bearing is arranged on the buffer leaf spring, the upper end of the thrust bearing is lower than the upper end of the positioning sleeve, the bottom end of the elastic tube penetrates through the vibration absorbing coil spring and is arranged at the upper part in the positioning sleeve, a gap is arranged between the bottom end of the elastic tube and the top end of the thrust bearing, and a dynamic pressure bearing is arranged at the lower end in the elastic tube. The invention separates the thrust bearing from the elastic tube by the cooperation of the positioning sleeve, the buffer leaf spring and the thrust bearing, thereby separating radial force and axial force, prolonging the service life of the lower support and reducing noise and vibration.

Inventors

ZHANG HAO
CAO XIUCHENG

Assignees

河南二纺机股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251218

Claims (6)

1. The lower support of the spinning spindle comprises spindle feet and an elastic tube, and is characterized in that a coaxial shock-absorbing coil spring, a positioning sleeve and a buffer leaf spring are sequentially arranged in the spindle feet from top to bottom, a coaxial thrust bearing is arranged on the buffer leaf spring, and the upper end of the thrust bearing is lower than the upper end of the positioning sleeve; The bottom of the elastic tube passes through the shock-absorbing coil spring and is arranged at the upper part in the positioning sleeve, the bottom of the elastic tube and the top of the thrust bearing are arranged at intervals, and the lower end in the elastic tube is provided with a dynamic pressure bearing.
2. The lower support of a textile spindle as claimed in claim 1, wherein the lower end of the thrust bearing is provided with a limiting table, the upper end of the thrust bearing passes through the buffer leaf spring and is provided with a compression ring, and the lower end of the compression ring is propped against the buffer leaf spring.
3. A lower support for a textile spindle as claimed in claim 1 or 2, wherein the buffer leaf springs are provided with arc-shaped holes uniformly distributed in the circumferential direction.
4. The lower support for a textile spindle as claimed in claim 1, further comprising a bearing housing, wherein a lower portion of the bearing housing is fixed in the spindle foot and abuts against an upper end of the shock-absorbing coil spring, and an upper portion of the elastic tube is fixed in the bearing housing.
5. The lower support of a spinning spindle of claim 4, wherein the upper end of the bearing seat is provided with an upper bearing and a bearing positioning cover.
6. A spinning spindle comprises a spindle rod and is characterized by further comprising a lower support according to any one of claims 1-5, wherein the bottom end of the spindle rod sequentially penetrates through an elastic tube and a dynamic pressure bearing and abuts against the top end of a thrust bearing.

Description

Textile spindle and lower support thereof Technical Field The invention relates to the technical field of textile equipment, in particular to a textile spindle and a lower support thereof. Background The spinning spindle of the existing spinning frame, as shown in fig. 1 and 2, mainly comprises a spindle rod 19 and a lower support, wherein the lower support comprises a spindle foot 9, an elastic tube 14, a shock absorbing coil spring 1, a thrust bearing 4, a dynamic pressure bearing 15 and a supporting piece 20, the dynamic pressure bearing 15, the thrust bearing 4 and the supporting piece 20 are all arranged at the bottom of the elastic tube 14, the lower end of the spindle rod 19 stretches into the elastic tube 14, then passes through the dynamic pressure bearing 15 and finally abuts against the thrust bearing 4. In the rotating process of the spindle rod, vibration can be generated, and the lower support is usually subjected to two directions of acting force, namely radial force and axial force, and in the structure of fig. 1, the dynamic pressure bearing and the thrust bearing are both positioned in the elastic tube, so that the elastic tube simultaneously bears the radial force and the axial force, the vibration generated by the elastic tube is larger, the noise is also larger, the lower support is easy to wear, the service life is influenced, for example, the lower support works at 25000 revolutions per minute, and the average service life of the lower support structure of fig. 1 is 8-10 years. Disclosure of Invention The invention provides a textile spindle and a lower support thereof, wherein the thrust bearing is separated from an elastic tube through the cooperation of a positioning sleeve, a buffer leaf spring and the thrust bearing, so that the radial force and the axial force are separated, the service life of the lower support is prolonged, and the noise and vibration are reduced. The technical scheme of the invention is that the lower support of the textile spindle comprises spindle feet and elastic tubes, wherein coaxial shock-absorbing coil springs, positioning sleeves and buffer leaf springs are sequentially arranged in the spindle feet from top to bottom, the buffer leaf springs are provided with coaxial thrust bearings, and the upper ends of the thrust bearings are lower than the upper ends of the positioning sleeves; The bottom of the elastic tube passes through the shock-absorbing coil spring and is arranged at the upper part in the positioning sleeve, the bottom of the elastic tube and the top of the thrust bearing are arranged at intervals, and the lower end in the elastic tube is provided with a dynamic pressure bearing. Further, the lower extreme of footstep bearing is provided with spacing platform, and the upper end of footstep bearing passes buffering leaf spring, and is provided with the clamping ring, and the lower extreme of clamping ring offsets with buffering leaf spring. Further, arc-shaped holes are uniformly distributed on the buffer leaf spring along the circumferential direction. Further, the device also comprises a bearing seat, wherein the lower part of the bearing seat is fixed in the spindle foot and props against the upper end of the shock-absorbing coil spring, and the upper part of the elastic tube is fixed in the bearing seat. Further, an upper bearing and a bearing positioning cover are arranged at the upper end in the bearing seat. The spinning spindle comprises a spindle rod, wherein the spindle rod comprises a lower support, and the bottom end of the spindle rod sequentially penetrates through an elastic tube and a dynamic pressure bearing and abuts against the top end of a thrust bearing. The invention has the beneficial effects that: The lower support of the invention separates the thrust bearing from the elastic tube through the cooperation of the positioning sleeve, the buffer leaf spring and the thrust bearing, the elastic tube is matched with the dynamic pressure bearing to bear radial force, the thrust bearing bears axial force, the radial force and the axial force are separated, and the lower support works and operates at 25000 revolutions per minute. Drawings In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of a prior art lower support structure; FIG. 2 is a schematic structural view of a prior art textile spindle; FIG. 3 is a schematic view of the lower support structure of the present invention; FIG. 4 is a schematic view of the structure of the textile spindle of the present invention; fig. 5 is a schematic structu