CN111043164A

CN111043164A - Tensioning wheel bearing seat structure of gang saw machine

Info

Publication number: CN111043164A
Application number: CN201911394804.3A
Authority: CN
Inventors: 蔡巍巍; 郑子亮; 骆颖; 张延军; 周志成; 郭灿廷
Original assignee: Guilin Tebon Superhard Material Co ltd
Current assignee: Guilin Tebon Superhard Material Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-21

Abstract

The invention discloses a tensioning wheel bearing seat structure of a gang saw machine, which comprises a tensioning wheel flange arranged on a bearing outer ring, wherein the bearing outer ring is axially limited by bearing baffles arranged on the left end surface and the right end surface of the tensioning wheel flange, or one end of the bearing outer ring is limited at a flange at the side end of the tensioning wheel flange, and the other end of the bearing outer ring is limited by the bearing baffles arranged on the corresponding end surfaces of the tensioning wheel flange; the left and right sides of the tensioning wheel flange are provided with a left bearing flange cover and a right bearing flange cover which are connected with each other and used for limiting and installing the bearing inner ring, and the rotating gap between the left and right bearing flange covers and the tensioning wheel flange is designed into a triangular sawtooth shape or a square sawtooth shape so as to form a labyrinth sealing groove for preventing water vapor from entering the bearing through the rotating gap. The invention can effectively prevent water vapor generated during working from entering the inside of the bearing, greatly prolongs the service life of the bearing and greatly improves the operation efficiency of the tension wheel assembly.

Description

Tensioning wheel bearing seat structure of gang saw machine

Technical Field

The invention relates to a component structure of a wire saw unit, in particular to a bearing seat structure of a tensioning wheel of a gang saw machine.

Background

The applicant company develops a large-scale multi-group rope saw, adopts several to dozens of rope saws to be installed side by side, and can simultaneously cut several to dozens of granite large plates.

The group saw machine has the advantages that the operation environment is severe, the space is narrow, a large amount of water vapor and corrosion exist for a long time, the tension force of the group saw rope is guaranteed by independently tensioning each tensioning wheel, and therefore the structure of the tensioning wheel bearing seat is of great significance for the service life of a tensioning wheel bearing and the dense arrangement of the tensioning wheels.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a tensioning wheel bearing seat structure of a gang saw machine, which can ensure long service life of a bearing and stable operation.

The bearing seat structure of the tensioning wheel of the gang saw machine can solve the technical problems, and comprises a tensioning wheel flange arranged on a bearing outer ring, wherein the bearing outer ring is axially limited by bearing baffles arranged on the left end surface and the right end surface of the tensioning wheel flange, or one end of the bearing outer ring is limited at the side end flange of the tensioning wheel flange, and the other end of the bearing outer ring is limited by the bearing baffles arranged on the corresponding end surfaces of the tensioning wheel flange; the left and right sides of the tensioning wheel flange are provided with a left bearing flange cover and a right bearing flange cover which are connected with each other and used for limiting and installing the bearing inner ring, and the rotating gap between the left and right bearing flange covers and the tensioning wheel flange is designed to be triangular sawtooth or square sawtooth so as to form a labyrinth sealing groove for preventing water vapor from entering the bearing through the rotating gap.

Further, the labyrinth seal groove is formed between a tooth crest and a tooth mouth which are matched with each other between each bearing flange cover and the tension wheel flange.

For the convenience of processing, the left labyrinth seal groove and the right labyrinth seal groove are symmetrically arranged.

Conventionally, the bearing baffle is installed on the tensioning wheel flange through screws uniformly distributed on the circumference.

Conventionally, the left and right bearing flange covers are connected and installed through a bolt assembly at the center of the cover body.

In order to reduce the thickness of the whole structure, the bearing is preferably a double-row angular contact ball bearing.

The invention has the beneficial effects that:

1. the bearing seat structure of the tension pulley of the gang saw machine adopts the left and the right bearing flange covers and the middle tension pulley flange to form a set of perfect labyrinth seal structure, and is provided with a plurality of labyrinth grooves, so that water vapor generated during working can not enter the inside of the bearing, the service life of the bearing is greatly prolonged, and the running efficiency of the tension pulley component is greatly improved.

2. According to the invention, the double-row angular contact ball bearing is selected to reduce the thickness of the assembly, and after the tensioning wheel is connected with the tensioning wheel flange, the gravity center of the whole assembly is superposed with the center line of the bearing, so that the bearing is stressed uniformly and runs smoothly.

3. The invention has simple structure and convenient assembly and disassembly.

4. In the structure of the invention, when the tensioning wheel is worn or damaged, the tensioning wheel can be replaced only by disassembling the tensioning wheel flange and the bolt of the tensioning wheel, thus being practical and convenient.

Drawings

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

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic structural diagram of a tension wheel flange in the embodiment of fig. 1 and 2.

Fig. 4(a) is a schematic structural diagram of the left bearing flange cover in the embodiment of fig. 1 and 2.

Fig. 4(b) is a schematic structural diagram of the right bearing flange cover in the embodiment of fig. 1 and 2.

And (3) identifying the figure number: 1. a bearing; 2. a tension wheel flange; 2-1, bearing holes; 2-2, a flange; 3. a bearing baffle; 4. a left bearing flange cover; 5. a right bearing flange cover; 6. a labyrinth seal groove; 6-1, tooth mouth; 6-2, tooth top; 7. a bolt assembly; 8. and (4) screws.

Detailed Description

The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.

The invention discloses a bearing seat structure of a tensioning wheel of a gang saw machine, which comprises a tensioning wheel flange 2 in the middle, a left bearing flange cover 4, a right bearing flange cover 5 and a double-row angular contact ball bearing 1 arranged among the left bearing flange cover 4, the tensioning wheel flange 2 and the right bearing flange cover 5, and is shown in figures 1 and 2.

The tensioning wheel flange 2 (in a flat shape) comprises a bearing installation part I, a bearing sealing part I and a tensioning wheel installation part which are coaxial from inside to outside, a bearing hole 2-1 is coaxially formed in the bearing installation part I, a flange 2-2 is arranged at the left end of the bearing hole 2-1, the double-row angular contact ball bearing 1 is installed into the bearing hole 2-1 from the right end of the bearing hole 2-1 (in tight fit), the left end of a bearing outer ring is limited on the flange 2-2, the right end of the bearing outer ring is exposed out of the bearing hole 2-1, a bearing baffle 3 is installed on the right end face of the bearing installation part I through screws 8 which are uniformly distributed on the circumference, the right end of the bearing outer ring is limited by the bearing baffle 3, and after the bearing baffle 3 is installed, the left side and the right side of the bearing installation part I; the width of the bearing sealing part I is smaller than that of the bearing mounting part I, the center position of the bearing sealing part I is positioned on the central plane of the double-row angular contact ball bearing 1, and four square tooth openings 6-1 which are symmetrical left and right and are radially spaced are formed in counter bores on the left end face and the right end face of the bearing sealing part I; the tension wheel mounting part can be provided with a tension wheel, and the center of the wheel body of the tension wheel is positioned on the central plane of the double-row angular contact ball bearing 1, as shown in fig. 1, 2 and 3.

The structure of the left bearing flange cover 4 and the right bearing flange cover 5 is symmetrical to the tensioning wheel flange 2 on which the double-row angular contact ball bearing 1 is arranged from inside to outside, the opposite end surfaces of the bearing flange covers comprise a connecting part, a bearing mounting part II and a bearing sealing part II from inside to outside, the connecting part of the left bearing flange cover 4 and the right bearing flange cover 5 is tightly fitted in the inner ring of the double-row angular contact ball bearing 1 and is tightly connected through a bolt component 7 at the central position (the end surfaces of the left connecting part and the right connecting part are abutted), the bearing mounting parts II of the left bearing flange cover 4 and the right bearing flange cover 5 are covered on the double-row angular contact ball bearing 1 and the bearing mounting part I of the tensioning wheel flange 2 to form left and right axial limit to the bearing inner ring, three radial spaced square tooth crests 6-2 on the bearing sealing part II of the left bearing flange cover 4 and the right bearing flange cover 5 are embedded with three tooth mouths, the rotating clearance of the tensioning wheel flange 2 relative to the left and right bearing flange covers 4 and 5 is reserved between the embedded surfaces, the outer edge end surfaces of the bearing sealing parts II of the left and right bearing flange covers 4 and 5 are covered at the uppermost tooth opening 6-1 of the bearing sealing part I of the tensioning wheel flange 2, the rotating clearance is reserved between the covered surfaces, left and right symmetrical rotating clearances are formed between the left and right bearing flange covers 4 and 5 and the tensioning wheel flange 2 to form a left and right labyrinth sealing grooves 6, and the plurality of right-angled labyrinth sealing grooves 6 formed by the square sawteeth can effectively prevent water vapor from entering the bearing 1 through the rotating clearances, so that the bearing 1 is effectively protected from being corroded, and the service life of the bearing is prolonged as shown in figures 2, 3, 4(a) and 4 (b).

Before assembly, a small amount of lubricating oil is brushed on the bearing sealing end faces of the left and right bearing flange covers 4 and 5 matched with the tensioning wheel flange 2, so that the flexible rotation of the tensioning wheel flange 2 and the tensioning wheel can be effectively guaranteed.

The integral structure of the invention is arranged on the left and right grillage of the tension guide rod through the left and right bearing flange covers 4 and 5.

Claims

1. Group saw machine take-up pulley bearing frame structure, its characterized in that: the device comprises a tensioning wheel flange (2) arranged on the outer ring of a bearing (1), wherein the outer ring of the bearing (1) is axially limited by bearing baffles (3) arranged on the left end surface and the right end surface of the tensioning wheel flange (2), or one end of the outer ring of the bearing (1) is limited on a side end flange of the tensioning wheel flange (2), and the other end of the outer ring of the bearing (1) is limited by the bearing baffles (3) arranged on the corresponding end surfaces of the tensioning wheel flange (2); the left and right sides of the tensioning wheel flange (2) are provided with a left bearing flange cover (4) and a right bearing flange cover (5) which are connected with each other and used for limiting the inner ring of the bearing (1), and the rotating gap between the left and right bearing flange covers (4 and 5) and the tensioning wheel flange (2) is designed to be triangular saw-tooth shape or square saw-tooth shape so as to form a labyrinth type sealing groove (6) for preventing water vapor from entering the bearing (1) through the rotating gap.

2. The gang saw tensioning wheel bearing block structure of claim 1, wherein: the labyrinth seal groove (6) is formed between tooth tops (6-2) and tooth openings (6-1) which are matched with each other between each bearing flange cover and the tensioning wheel flange (2).

3. The gang saw tensioning wheel bearing block structure of claim 2, wherein: the left labyrinth seal groove and the right labyrinth seal groove (6) are symmetrically arranged.

4. The bearing seat structure of the tension pulley of the gang saw machine as claimed in any one of claims 1 to 3, wherein: the bearing baffle (3) is arranged on the tensioning wheel flange (2) through screws (8) which are uniformly distributed on the circumference.

5. The bearing seat structure of the tension pulley of the gang saw machine as claimed in any one of claims 1 to 3, wherein: the left and right bearing flange covers (4, 5) are connected and installed through a bolt component (7) at the center of the cover body.

6. The bearing seat structure of the tension pulley of the gang saw machine as claimed in any one of claims 1 to 3, wherein: the bearing (1) is a double-row angular contact ball bearing.