High-temperature-resistant long-service-life bearing special for chemical fiber equipment

Abstract

The utility model discloses a high-temperature-resistant long-life bearing special for chemical fiber equipment, which comprises a bearing outer ring and a bearing inner ring which are coaxially sleeved together, the inner side and the outer side of the bearing outer ring are respectively provided with an annular outer ring annular groove and an annular inner ring annular groove along the circumferential direction of the bearing outer ring, and the outer ring annular groove is communicated with the inner ring annular groove through an oil injection hole. A retainer is arranged on the outer ring wall of the bearing inner ring, a positioning portion protruding in the circumferential direction is arranged in the center of the outer ring wall of the retainer, the positioning portion is arranged in a ring groove of the inner ring in a sliding mode, two rows of rolling bodies arranged in parallel are installed in the retainer in an embedded mode, and dustproof covers are installed on the end faces, on the two sides of the bearing, of the retainer. The chemical fiber winding machine has a good cooling effect under the high-speed condition, the service life of the bearing is prolonged, the replacement frequency of the bearing is greatly reduced, the use cost of the chemical fiber winding machine is reduced, and the situation that normal use of the chemical fiber winding machine is affected due to the fact that the inner ring shakes is avoided.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to special bearings for high-temperature resistant and long-life chemical fiber equipment. Background Technology

[0002] In chemical fiber filament spinning equipment, the high-speed winding head is undoubtedly the most critical unit, directly affecting the development of high-speed spinning technology. Chemical fiber filaments are wound into a cylindrical package on the winding head. During the winding process, the pressure rollers maintain constant contact with the yarn package on the bobbin chuck shaft at a set contact pressure. Special bearings for chemical fiber equipment are mainly assembled at both ends of the high-speed winding head. The winding head is one of the most critical unit machines in chemical fiber spinning equipment. It is wound around a paper tube to form a product suitable for the next process. The main function of the bearings is to support the rotation of the winding head, reduce the coefficient of friction during its movement, and ensure its rotational accuracy.

[0003] In the prior art, due to the contact with the spinning material and the weight of the pressure roller itself, it often deviates from the transmission structure and becomes eccentric. When the pressure roller rotates at high speed, the eccentricity can easily cause local wear of the pressure roller, which is not conducive to the stable operation of the spinning machine. Utility Model Content

[0004] To address the aforementioned technical problems, a high-temperature resistant, long-life bearing specifically designed for chemical fiber equipment is provided. This bearing offers high load-bearing capacity, adaptability to high speeds and rapid acceleration, and very high operational precision.

[0005] To achieve the above objectives, this utility model discloses a high-temperature resistant, long-life bearing specifically for chemical fiber equipment, comprising an outer ring and an inner ring coaxially sleeved together. The outer ring has an annular groove on its inner and outer sides, respectively, and an inner ring groove on its outer side. The outer and inner ring grooves are connected through an oil injection hole. A cage is provided on the outer ring wall of the inner ring, and a circumferentially protruding positioning part is provided at the center of the outer ring wall of the cage. The positioning part is slidably disposed in the inner ring groove. Two rows of parallel rolling elements are embedded in the cage, and dust covers are installed on the end faces of the cage on both sides of the bearing.

[0006] Furthermore, the cage includes a cage body disposed between the outer ring and the inner ring of the bearing, the cage body including a first support portion connected to the positioning portion, and a second support portion respectively provided on both sides of the first support portion.

[0007] Furthermore, the first support portion and the second support portion have connecting holes on their cross-sections, and are connected by connecting pins set in the connecting holes.

[0008] Furthermore, a ball groove for mounting the rolling element is formed between the first support part and the second support part. At least two sets of circumferentially distributed universal ball mounting grooves are provided on the inner side wall of the ball groove. Universal balls are embedded in the universal ball mounting grooves and abut against the rolling element.

[0009] Furthermore, both the inner ring wall of the bearing outer ring and the outer ring wall of the bearing inner ring are coated with a heat-resistant coating.

[0010] Furthermore, the surface of the heat-resistant coating is provided with a wear-resistant layer.

[0011] Furthermore, the roughness of the inner ring wall of the bearing outer ring and the outer ring wall of the bearing inner ring are greater than the roughness of the bearing connection surface.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a special bearing for high temperature resistant and long service life chemical fiber equipment. Under high speed conditions, it can remove more heat generated in the bearing, has a good cooling effect, extends the service life of the bearing, greatly reduces the replacement frequency of the bearing, reduces the operating cost of the chemical fiber winding machine, and avoids the inner ring from shaking, which would affect the normal operation of the chemical fiber winding machine. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0016] Figure 3 This utility model Figure 2 Partial view A.

[0017] Figure 4 This is a schematic diagram of the installation of the bearing inner ring and cage according to this utility model.

[0018] Figure 5 This is a schematic diagram of the cage structure of this utility model.

[0019] Figure 6 This utility model Figure 5 Partial view B.

[0020] In the diagram: 1 is the outer ring of the bearing; 10 is the oil filling hole; 11 is the outer ring groove; 12 is the inner ring groove; 2 is the inner ring of the bearing; 3 is the dust cover; 4 is the cage; 41 is the positioning part; 42 is the first support part; 421 is the connecting hole; 422 is the universal ball mounting groove; 43 is the second support part; 5 is the rolling element; 6 is the heat-resistant coating; 7 is the wear-resistant layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] One embodiment of this utility model is as follows: Figure 1 , Figure 2 and Figure 4 As shown, the outer ring 1 of the bearing has an outer ring groove 11 and an inner ring groove 12 on its inner and outer sides, respectively, along its circumference. The outer ring groove 11 and the inner ring groove 12 are connected through an oil injection hole 10. A cage 4 is provided on the outer ring wall of the inner ring 2 of the bearing. A circumferentially protruding positioning part 41 is provided at the center of the outer ring wall of the cage 4. The positioning part 41 is slidably disposed in the inner ring groove 12. Two rows of parallel rolling elements 5 are embedded in the cage 4. Specifically, the rolling elements 5 adopt a hybrid ceramic ball structure to reduce temperature rise, increase linear speed, and extend the bearing life. Dust covers 3 are installed on the end faces of the cage 4 on both sides of the bearing. Under high-speed conditions, they can carry away more heat generated in the bearing, which has a good cooling effect, extends the service life of the bearing, greatly reduces the replacement frequency of the bearing, reduces the operating cost of the chemical fiber winding machine, and avoids the inner ring from shaking, which would affect the normal operation of the chemical fiber winding machine.

[0023] The cage 4 includes a cage body placed between the outer ring 1 and the inner ring 2 of the bearing. The cage body is made of high-strength, lightweight fabric-reinforced phenolic resin. The cage body includes a first support part 42 connected to the positioning part 41. The positioning part 41 slides along the inner ring groove 12 during bearing operation, which can prevent the bearing from becoming eccentric to a certain extent. Second support parts 43 are respectively provided on both sides of the first support part 42. The two are connected to form a ball groove for installing rolling elements. The rolling elements are symmetrically arranged on both sides of the positioning part to improve the bearing's load-bearing capacity.

[0024] like Figure 6 As shown, the first support part 42 and the second support part 43 are provided with connecting holes 421 on their cross-sections, and are connected by connecting pins provided in the connecting holes 421. A ball groove for installing the rolling element 5 is formed between the first support part 42 and the second support part 43. At least two sets of circumferentially distributed universal ball mounting grooves 422 are provided on the inner sidewall of the ball groove. Universal balls are embedded in the universal ball mounting grooves 422 and abut against the rolling element 5 to reduce the friction between the rolling element 5 and the cage 4.

[0025] like Figure 3As shown, the inner ring wall of the bearing outer ring 1 and the outer ring wall of the bearing inner ring 2 are both coated with a heat-resistant coating 6. The solid material with cooling effect is coated on the bearing surface, and the good thermal conductivity of the coating itself helps the bearing to dissipate heat.

[0026] like Figure 3 As shown, a wear-resistant layer 7 is provided on the surface of the heat-resistant coating 6 to improve the wear resistance of the heat-resistant coating and extend the service life of the bearing.

[0027] The roughness of the inner ring wall of bearing outer ring 1 and the outer ring wall of bearing inner ring 2 is greater than the roughness of the bearing connecting surface. The inner ring wall of bearing outer ring 1 and the outer ring wall of bearing inner ring 2 are the contact surfaces with the rolling element 5. Copper increases the surface roughness to improve the adhesion of the heat-resistant coating 6 and further improve the service life of the bearing.

[0028] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0029] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A high-temperature resistant, long-life bearing for chemical fiber equipment, comprising an outer bearing ring (1) and an inner bearing ring (2) coaxially sleeved together, characterized in that, The outer ring (1) of the bearing has an outer ring groove (11) and an inner ring groove (12) on its inner and outer sides respectively. The outer ring groove (11) and the inner ring groove (12) are connected through an oil injection hole (10). A cage (4) is provided on the outer ring wall of the inner ring (2). A circumferentially protruding positioning part (41) is provided at the center of the outer ring wall of the cage (4). The positioning part (41) is slidably disposed in the inner ring groove (12). Two rows of parallel rolling elements (5) are embedded in the cage (4). Dust covers (3) are installed on the end faces of the cage (4) on both sides of the bearing.

2. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 1, characterized in that, The cage (4) includes a cage body placed between the outer ring (1) and the inner ring (2) of the bearing. The cage body includes a first support (42) connected to the positioning part (41), and a second support (43) is provided on both sides of the first support (42).

3. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 2, characterized in that, The first support part (42) and the second support part (43) have connecting holes (421) on their cross surfaces, and are connected by connecting pins set in the connecting holes (421).

4. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 3, characterized in that, A ball groove for mounting the rolling element (5) is formed between the first support part (42) and the second support part (43). At least two sets of circumferentially distributed universal ball mounting grooves (422) are provided on the inner side wall of the ball groove. Universal balls are embedded in the universal ball mounting grooves (422) and abut against the rolling element (5).

5. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 1, characterized in that, The inner ring wall of the bearing outer ring (1) and the outer ring wall of the bearing inner ring (2) are both coated with a heat-resistant coating (6).

6. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 5, characterized in that, The surface of the heat-resistant coating (6) is provided with a wear-resistant layer (7).

7. The high-temperature resistant, long-life bearing for chemical fiber equipment according to claim 5, characterized in that, The roughness of the inner ring wall of the bearing outer ring (1) and the outer ring wall of the bearing inner ring (2) is greater than the roughness of the bearing connection surface.

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