Novel hanger bearing structure

Abstract

A novel hanging bearing structure comprises a fixing framework and a connecting framework, the outer side of the fixing framework is fixed, the inner side of the fixing framework extends into a shell and is fixed to the connecting framework, and the connecting framework is integrally arranged on a central shaft in the shell in a sleeving mode; the connecting framework comprises a shaft sleeve arranged on the central shaft in a sleeving manner, a bearing bush arranged on the shaft sleeve in a sleeving manner and a seat ring arranged on the bearing bush in a sleeving manner; the seat ring is fixedly connected with the fixed framework; each of the shaft sleeve, the bearing bush and the seat ring is formed by encircling two semi-structural bodies and is fixed through a fixing piece, so that maintenance and overhaul are facilitated; a gap is formed between the shaft sleeve and the bearing bush, two annular material storage grooves are formed in the inner wall of the bearing bush, and the annular material storage grooves are communicated with the outer side through the gap, so that materials can conveniently enter the annular material storage grooves through the gap. The utility model has the advantages that the service life of parts is longer, and the maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali conveying equipment for calcining furnaces, in particular to a novel hanging bearing structure. Background Art

[0002] Light / heavy ash calcining furnace is an important equipment for the industrial preparation of soda ash. With the development of economy, the calcining furnace of alkali-making equipment is becoming larger and larger. As the conveying equipment of alkali out of the calcining furnace, the alkali dust spiral is indispensable. With the large-scale equipment and the process matching requirements, the original cantilever structure of the spiral blade hollow shaft is no longer suitable after the alkali dust spiral conveying distance is increased. In addition, due to the high temperature and acid-alkali resistant working environment, the disturbance and thermal expansion of the spiral blade hollow shaft are significant. In order to ensure the normal operation of the feed screw conveyor, it is necessary to design a structure to support and control the disturbance and deformation of the spiral blade hollow shaft.

[0003] There are usually two types of hanging bearing structures: one is the roller bearing structure, see ( Figure 3 ), a utility model patent with publication number CN204777288U, discloses a new type of spiral machine hanging bearing device, which is composed of a core shaft, a bearing seat, a bearing steel roller, an end cover, a suspension rod, and a cross arm. The bearing steel roller is installed between the rotating core shaft and the bearing seat, and the two ends of the bearing seat are sealed with end covers. The bearing seat is connected to the cross arm through a suspension rod, and the cross arm is installed on the spiral machine housing. The cross arm is provided with an oil hole, which leads to the core shaft, and an oil cup is provided on the oil hole. The utility model has a simple structure and a reasonable design. Since the bearing steel rollers are arranged separately and staggered, the gap between the rollers is large. When the oil cup frequently adds butter to the bearing seat, sufficient butter can be stored in the gap between the core shaft and the bearing seat to ensure good lubrication between the core shaft and the bearing steel roller. After the improvement, the actual use effect is obvious, and the service life is increased from the original replacement every 2 to 3 months to about 2 years.

[0004] The other is an intermediate hanging bearing device, see ( Figure 4 ), the invention patent with the publication number CN102815513B, discloses an intermediate hanging bearing device of a screw conveyor, comprising: a horizontally arranged mounting plate; right-angled brackets arranged on both sides below the mounting plate and arranged oppositely; a support plate protruding downward from the center of the mounting plate; and a hollow and cylindrical bearing seat, which is located below the support plate and fixedly connected to the support plate; a bearing, which is accommodated by the bearing seat; a number of bolts for fixing the mounting plate and the bracket, the support plate comprises an axial connecting plate, longitudinal ribs arranged vertically on both sides of the axial connecting plate, and two guide plates arranged on both sides of the axial connecting plate and one side of the longitudinal ribs, the guide plates are vertically fixedly connected below the mounting plate and abut against the outer wall of the bearing seat to form two closed cavities. By setting two guide plates, the occurrence of material residue is avoided, thereby avoiding material blockage and improving the material conveying efficiency.

[0005] The above two structures have the following disadvantages due to the high working environment temperature and the corrosion of the conveyed materials (acid and alkali resistance):

[0006] 1. The axial thermal expansion of the spiral blade hollow shaft is large, and the axial expansion capacity cannot be met;

[0007] 2. When there is lubricating oil, the temperature is high, the sealing performance cannot be guaranteed, and the material is polluted;

[0008] 3. The original structural materials are neither corrosion-resistant nor wear-resistant, and the life of wearing parts is short;

[0009] 4. The equipment has many failures, it is inconvenient to replace wearing parts, and the maintenance efficiency is low. Utility Model Content

[0010] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a novel suspension bearing structure, thereby solving the problems of bearing sealing, lubrication and corrosion in a high temperature environment.

[0011] The purpose of this utility model is achieved through the following technical solutions:

[0012] A novel hanging bearing structure comprises:

[0013] A fixed structure and a connecting structure, wherein the outer side of the fixed structure is fixed, and the inner side thereof extends into the shell and is fixed to the connecting structure, and the connecting structure is entirely sleeved on the central axis in the shell; the connecting structure comprises a sleeve sleeved on the central axis, a bearing bush sleeved on the sleeve, and a seat ring sleeved on the bearing bush, and the seat ring is fixedly connected to the fixed structure; the sleeve, the bearing bush, and the seat ring are each formed by enclosing two semi-structures and fixed by fixing parts for maintenance and overhaul;

[0014] There is a gap between the shaft sleeve and the bearing shell. The inner wall of the bearing shell is provided with two annular storage grooves. The annular storage grooves are communicated with the outside through the gaps, so that the materials can enter the annular storage grooves through the gaps.

[0015] In one or more embodiments of the present invention, the fixing structure includes a hanger, the outer side of the hanger is a fixed end, and the other end of the hanger extends into the shell and is fixed to the seat ring.

[0016] In one or more embodiments of the present invention, the shaft sleeve includes a first half shaft sleeve and a second half shaft sleeve, and the first half shaft sleeve and the second half shaft sleeve are fixed by a shaft sleeve connecting member.

[0017] In one or more embodiments of the present invention, the bearing includes a first half bearing and a second half bearing, the seat ring includes a semi-fixed seat ring and a semi-movable seat ring, the semi-fixed seat ring is welded to the extended end of the fixed structure, and the semi-fixed seat ring and the semi-movable seat ring are fixed by a seat ring fixing piece; the first half bearing and the second half bearing are fixed by a bearing fixing screw, and the bearing fixing screw extends into the seat ring.

[0018] In one or more embodiments of the present invention, a plurality of first positioning keys are embedded and fixed between the bearing shell and the seat ring.

[0019] In one or more embodiments of the present invention, the length of the bearing shell is smaller than the length of the sleeve.

[0020] In one or more embodiments of the present invention, a second positioning key is embedded and fixed between the shaft sleeve and the central shaft.

[0021] In one or more embodiments of the present invention, a support is fixed to the outer wall of the shell, and the outer end of the hanger is fixed to the support, and the two are fixed by a hanger connector and an adjustment sealing gasket.

[0022] Beneficial effects of the utility model:

[0023] 1. When the structure is in use, the material enters the annular storage tank through the gap, and the material is squeezed and stored in the annular storage tank, so that the friction and self-lubrication between the materials are realized, which greatly reduces the metal loss between the bearing and the sleeve, thereby increasing its service life. There is no lubricating oil to pollute the product, and the material is self-lubricated, which increases the service life of wearing parts, reduces the equipment failure rate, and ensures the reliable operation of the equipment;

[0024] 2. By designing the sleeve, bearing shell and seat ring as two semi-structures, maintenance and repair are convenient and work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 is a cross-sectional view of the structure;

[0027] Figure 3 It is the front view of the end face of the bearing shell;

[0028] Figure 4 It is a cross-sectional view of the bearing. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0030] In this embodiment, Figure 1 As shown, a novel hanging bearing structure includes a fixed structure and a connecting structure, wherein the outer side of the fixed structure is fixed, and the inner side thereof extends into the shell and is fixed to the connecting structure, and the connecting structure is integrally sleeved on the central axis in the shell; the connecting structure includes a sleeve sleeved on the central axis, a bearing bush sleeved on the sleeve, and a seat ring sleeved on the bearing bush, and the seat ring is fixedly connected to the fixed structure; the sleeve, the bearing bush, and the seat ring are each formed by enclosing two semi-structures and fixed by fixing parts for maintenance and overhaul;

[0031] There is a gap between the shaft sleeve and the bearing shell. The inner wall of the bearing shell is provided with two annular storage grooves 12. The annular storage grooves 12 are communicated with the outside through the gap, so that the material can enter the annular storage grooves 12 through the gap.

[0032] In this embodiment, during the operation of the equipment, the material enters the two annular storage tanks 12 through the gap, and the material is squeezed and stored in the annular storage tank 12, so that friction and self-lubrication between the materials are achieved, which greatly reduces the metal loss between the bearing shell and the sleeve, thereby increasing their service life. By designing the sleeve, bearing shell and seat ring as two semi-structures, it is easy to disassemble and install.

[0033] In one or more embodiments of the present invention, the fixing structure includes a hanger 1, the outer side of the hanger 1 is a fixed end, and the other end thereof extends into the shell and is fixed to the seat ring.

[0034] In one or more embodiments of the present invention, the shaft sleeve includes a first half shaft sleeve 2 and a second half shaft sleeve 3 , and the first half shaft sleeve 2 and the second half shaft sleeve 3 are fixed by a shaft sleeve connector 4 .

[0035] In this embodiment, the first half sleeve 2 and the second half sleeve 3 are combined to form a sleeve and sleeved on the central shaft. The outer walls of both ends of the first half sleeve 2 and the second half sleeve 3 have outwardly protruding connecting ear plates, and the sleeve connector 4 is fixed to the two abutting connecting ear plates. The connection between the first half sleeve 2 and the second half sleeve 3 has a step surface structure, and the step surface is used for clamping. The sleeve connector 4 is a bolt.

[0036] In one or more embodiments of the utility model, the bearing includes a first half bearing 5 and a second half bearing 6, the seat ring includes a semi-fixed seat ring 7 and a semi-movable seat ring 8, the semi-fixed seat ring 7 is welded to the extended end of the fixed structure, and the semi-fixed seat ring 7 and the semi-movable seat ring 8 are fixed by a seat ring fixing member 9; the first half bearing 5 and the second half bearing 6 are fixed by a bearing fixing screw 10, and the bearing fixing screw 10 extends into the seat ring.

[0037] In this embodiment, the outer walls of the first half bearing 5 and the second half bearing 6 are provided with grooves, the inner sides of the semi-fixed seat ring 7 and the semi-movable seat ring 8 have an annular protrusion protruding inward, and the annular protrusion is located in the groove, and the vertical end faces on both sides of the first half bearing 5 and the second half bearing 6 are provided with a plurality of countersunk holes in an annular array, and the vertical end faces on both sides of the annular protrusion are provided with a plurality of threaded holes, and the countersunk holes correspond to the threaded holes and are adapted to the bearing fixing screws 10. The seat ring fixing member 7 is a bolt.

[0038] In one or more embodiments of the present invention, a plurality of first positioning keys 11 are embedded and fixed between the bearing shell and the seat ring.

[0039] In this embodiment, the relative positions of the bearing and the seat ring are fixed by the first positioning key 11, and the first positioning key 11 is located in a groove opened on the outer wall of the first half bearing 5 and the second half bearing 6, and a keyway is opened in the groove, and the keyway is adapted to the first positioning key 11. When the first positioning key 11 is located in the keyway, the inner arc surface of its annular protrusion contacts the first positioning key 11, and there is a gap between the inner arc surface of the annular protrusion and the arc surface of the groove.

[0040] In one or more embodiments of the present invention, the length of the bearing shell is smaller than the length of the sleeve.

[0041] In this embodiment, sufficient spacing is left between the two end surfaces of the bearing bush and the connecting ear plates at the two ends of the sleeve to ensure that the spiral blade hollow shaft has sufficient axial expansion and contraction.

[0042] In one or more embodiments of the present invention, a second positioning key 13 is embedded and fixed between the shaft sleeve and the central shaft.

[0043] In this embodiment, the relative position of the shaft sleeve and the central axis is fixed by the second positioning key 13 .

[0044] In one or more embodiments of the utility model, a support 14 is fixed to the outer wall of the shell, and the outer end of the hanger 1 is fixed to the support 14, and the two are fixed by a hanger connector 15 and an adjustment seal 16. The hanger connector 15 is a bolt. The hanger 1 is convenient for external machinery to be hoisted.

[0045] Working principle of this utility model:

[0046] The spiral blade hollow shaft rotates in the circular shell, and the spiral blade pushes the material to move axially, thereby achieving the purpose of conveying materials; the new hanging bearing structure supports the normal operation of the spiral blade hollow shaft, which can reduce the disturbance of the spiral blade hollow shaft and ensure its thermal expansion in a free state; during the operation of the equipment, the material enters the two annular storage tanks 12 through the gap, and the material is stored in the annular storage tanks 12 after being squeezed, so that friction and self-lubrication between the materials are achieved, which greatly reduces the metal loss between the bearing and the sleeve, thereby increasing its service life. By designing the sleeve, bearing and seat ring as two semi-structures, it is easy to disassemble and install; open the quick-opening door at the hand hole A on the shell, remove the seat ring fixing part 7 and the hanger connecting part 15, and then the internal related parts can be lifted out from the opening of the support 14; after removing the sleeve connecting part 4, the first half sleeve 2 and the second half sleeve 3 can be taken out from the hand hole A.

[0047] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A new type of hanging bearing structure, characterized in that: include: A fixed structure and a connecting structure, wherein the outer side of the fixed structure is fixed, and the inner side thereof extends into the shell and is fixed to the connecting structure, and the connecting structure is entirely sleeved on the central axis in the shell; the connecting structure comprises a sleeve sleeved on the central axis, a bearing bush sleeved on the sleeve, and a seat ring sleeved on the bearing bush, and the seat ring is fixedly connected to the fixed structure; the sleeve, the bearing bush, and the seat ring are each formed by enclosing two semi-structures and fixed by fixing parts for maintenance and overhaul; There is a gap between the shaft sleeve and the bearing shell, and the inner wall of the bearing shell is provided with two annular storage grooves (12). The annular storage grooves (12) are connected to the outside through the gap, so that the material can enter the annular storage grooves (12) through the gap.

2. A novel hanging bearing structure according to claim 1, characterized in that: The fixed structure comprises a hanger (1), the outer side of the hanger (1) being a fixed end, and the other end of the hanger (1) extending into the shell and being fixed to the seat ring.

3. A novel suspension bearing structure according to claim 1, characterized in that: The shaft sleeve comprises a first half shaft sleeve (2) and a second half shaft sleeve (3), and the first half shaft sleeve (2) and the second half shaft sleeve (3) are fixed via a shaft sleeve connecting member (4).

4. A novel hanging bearing structure according to claim 1, characterized in that: The bearing shell comprises a first half bearing shell (5) and a second half bearing shell (6); the seat ring comprises a semi-fixed seat ring (7) and a semi-movable seat ring (8); the semi-fixed seat ring (7) is welded to the extended end of the fixed structure; the semi-fixed seat ring (7) and the semi-movable seat ring (8) are fixed by a seat ring fixing member (9); the first half bearing shell (5) and the second half bearing shell (6) are fixed by a bearing shell fixing screw (10); the bearing shell fixing screw (10) extends into the seat ring.

5. A novel suspension bearing structure according to claim 4, characterized in that: A plurality of first positioning keys (11) are also embedded and fixed between the bearing shell and the seat ring.

6. A novel suspension bearing structure according to claim 1, characterized in that: The length of the bearing shell is smaller than the length of the sleeve.

7. A novel suspension bearing structure according to claim 1, characterized in that: A second positioning key (13) is embedded and fixed between the shaft sleeve and the central shaft.

8. A novel suspension bearing structure according to claim 2, characterized in that: A support (14) is fixed to the outer wall of the shell, and the outer end of the hanger (1) is fixed to the support (14), and the two are fixed via a hanger connector (15) and an adjustment seal pad (16).

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