Bearing seat and mounting method thereof

Abstract

The invention belongs to the technical field of coal water slurry concentration, and discloses a bearing seat and a mounting method thereof. The main shaft extends in the preset direction and is provided with an annular groove, the bearing seat comprises a shell, a semi-ring assembly, two bearings, a pressing ring and a shaft sleeve, the shell surrounds the outer side of the main shaft, and at least the upper end of the shell can be opened or closed; the semi-ring assembly comprises at least two semi-rings, and the at least two semi-rings are embedded in the annular groove and protrude out of the circumferential side of the main shaft. The two bearings are arranged outside the main shaft in a sleeving mode and located on the two sides of the semi-rings correspondingly, and the two bearings are installed in the installation space. At least part of the pressing ring is arranged outside the semi-ring assembly in a sleeving mode and limited by the semi-ring assembly in the preset direction, and the two ends of one bearing are limited by the top of the shell and the pressing ring respectively. One end of the shaft sleeve abuts against the side, away from the pressing ring, of the semi-ring, and the two ends of the other bearing are limited by the other end of the shaft sleeve and the bottom of the shell respectively. Installation is carried out only at the upper end of the main shaft, and installation steps are simplified.

Description

Technical Field

[0001] The invention relates to the technical field of coal-water slurry concentration, and in particular to a bearing seat and a mounting method thereof. Background Art

[0002] The mills in the coal-water slurry concentration equipment are mainly divided into two types on the market: horizontal and vertical. Both belong to the category of stirred mills, and the bearings of their rotors are installed on one side of the shaft, while the other side of the rotor performs stirring operations in the barrel of the mill. However, in recent years, with the trend of large-scale development, horizontal mills have been gradually eliminated because their main shafts are cantilever structures. If the shaft is too long, it will produce excessive bending moments, which limits its possibility of large-scale development. On the contrary, the rotor of the vertical mill adopts a vertical layout, which has more balanced force, greater processing capacity, and is easier to achieve large-scale development; at the same time, it occupies a smaller ground area, and the connection between the main shaft and the grinding barrel does not require a sealing structure, avoiding the problem of slurry leakage, etc., which has gradually gained market recognition.

[0003] Since the vertical mill is a stirred mill type, one side of the rotor's stirring blade is immersed in the coal slurry, and there is no bearing seat on this side. Therefore, the rotor is only provided with a bearing seat on the upper side connected to the power mechanism to form a suspended structure. As the mill develops towards larger size, the weight of the rotor has exceeded 10 tons and the length has exceeded 7 meters, making the structural design of the bearing seat crucial to the safe and reliable operation of the mill.

[0004] In the current design, the bearing housing is usually equipped with two bearings, which are installed at both ends of the main shaft. This layout makes the installation process of the bearing close to the blade side complicated and requires operation through a long shaft section, resulting in low installation efficiency.

[0005] Therefore, it is urgent to design a bearing seat and an installation method thereof to solve the above problems. Summary of the invention

[0006] One object of the present invention is to provide a bearing seat, in which two bearings can be installed at one end away from the blade, thereby simplifying the installation process of the bearing seat and improving the installation efficiency.

[0007] Another object of the present invention is to provide a method for installing a bearing seat, wherein the entire bearing seat is installed at one end of the main shaft, thereby simplifying the installation process of the bearing seat and improving installation efficiency.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] The bearing seat is connected to the main shaft, the main shaft extends along a preset direction and has an annular groove; the bearing seat includes:

[0010] A housing, wherein an installation space is formed in the housing and the housing is sealed around the outer side of the main shaft, and at least the upper end of the housing can be opened or closed;

[0011] A half ring assembly, comprising at least two half rings, wherein at least two of the half rings are embedded in the annular groove and protrude from the circumference of the main shaft;

[0012] Two bearings are sleeved outside the main shaft and are respectively located on both sides of the half ring, and the two bearings are installed in the installation space;

[0013] A pressure ring, at least part of which is sleeved outside the semi-ring assembly and limited by the semi-ring assembly in a preset direction, wherein two ends of one of the bearings are respectively limited by the top of the housing and the pressure ring;

[0014] A shaft sleeve is sleeved on the main shaft and one end of the shaft sleeve abuts against a side of the half ring away from the pressure ring. Two ends of the other bearing are respectively limited by the other end of the shaft sleeve and the bottom of the shell.

[0015] As an optional solution, the pressure ring includes:

[0016] A radial limiting portion is arranged outside the semi-ring assembly;

[0017] The axial limiting portion is connected to the radial limiting portion and is disposed around the main shaft, wherein one of the bearings is limited by the axial limiting portion in the preset direction.

[0018] As an optional solution, the bearing located at the top is defined as a first bearing, an oil retaining ring is arranged between the first bearing and the pressure ring, and the oil retaining ring is sleeved outside the main shaft and has a diameter that matches the inner diameter of the housing.

[0019] As an optional solution, both of the two bearings are tapered roller bearings.

[0020] As an optional solution, the bearing seat further comprises:

[0021] A fixed cone sleeve, the fixed cone sleeve is fixed to the main housing of the mill, and the inner hole side wall of the fixed cone sleeve is inclined inward from top to bottom;

[0022] The adjusting cone expansion ring comprises a connecting part and an adjusting part. The fixed cone sleeve is sleeved on the outside of the adjusting part. The outer wall of the adjusting part is inclined inward from top to bottom. The connecting part is connected to the adjusting part. The connecting part and the end surface of the fixed cone sleeve are connected by a plurality of adjusting parts. The connection depth of each adjusting part in the fixed cone sleeve is adjustable.

[0023] As an optional solution, a notch is provided in the adjusting cone expansion ring.

[0024] As an optional solution, the housing includes:

[0025] A shell body, in which a mounting space is formed and an upper end is open;

[0026] The upper cover assembly includes a fixing member and a gap adjusting member, wherein the fixing member is connected to the open end of the shell body, the gap adjusting member is threadedly connected to the fixing member, and the lower end of the gap adjusting member abuts against the top of the bearing at the upper end.

[0027] The installation method of the bearing seat is used to install the above-mentioned bearing seat, and the installation method of the above-mentioned bearing seat includes:

[0028] S10: Sleeve the housing onto the main shaft, keeping the upper end of the housing open;

[0029] S20: Positioning the main shaft at the lower end outside and in the mounting hole space;

[0030] S30: Sleeve the shaft sleeve outside the main shaft;

[0031] S40: embedding at least two of the above-mentioned half rings into the above-mentioned annular groove, and then sleeve the above-mentioned pressure ring on the outside of the above-mentioned half ring assembly;

[0032] S50: adjusting the position of the housing so that the bottom of the housing abuts against the bottom of the bearing at the lower end, and the two ends of the sleeve abut against the half-ring assembly and the bearing at the lower end respectively;

[0033] S60: Install the bearing at the top, and then close the upper end of the shell, so that both ends of the bearing at the top are respectively limited by the top of the shell and the pressure ring.

[0034] As an optional solution, the bearing seat further comprises:

[0035] A fixed cone sleeve, the fixed cone sleeve is fixed to the main housing of the mill, and the inner hole side wall of the fixed cone sleeve is inclined inward from top to bottom;

[0036] The adjusting cone expansion ring comprises a connecting part and an adjusting part. The fixed cone sleeve is sleeved on the outer side of the Oushensu adjusting part. The outer wall of the adjusting part is tilted inward from top to bottom. The connecting part is connected to the adjusting part. The connecting part and the end surface of the fixed cone sleeve are connected by a plurality of adjusting parts. The connection depth of each adjusting part in the fixed cone sleeve is adjustable.

[0037] The above-mentioned method for installing the bearing seat also includes:

[0038] S70: Measure the concentricity of the bearing and the fixed tapered sleeve, and adjust the connection depth of the plurality of adjustment members accordingly according to the axial deviation direction of the main shaft.

[0039] As an optional solution, a sealing ring is provided between the upper end of the shell and the main shaft, and a sealing ring is provided between the bottom end of the shell and the main shaft.

[0040] The beneficial effects of the present invention are:

[0041] The present invention provides a bearing seat. Since the main shaft is provided with an annular groove, the semi-ring component in the bearing seat is separately arranged with the main shaft. When the bearing close to the rotor side is installed, the semi-ring component has not been installed on the main shaft, so the bearing can be inserted into the main shaft from the end of the main shaft away from the rotor for installation, that is, the shell is first sleeved outside the main shaft, and then the lower bearing is installed into the shell from the upper end, and then the shaft sleeve, the semi-ring component and the pressure ring are sequentially sleeved, wherein the semi-ring component is embedded in the annular groove after the lower bearing and the shaft sleeve are installed, and is protruded from the circumferential surface of the main shaft, and the pressure ring plays a role in fixing the semi-ring component, thereby, the two ends of the shaft sleeve respectively abut the semi-ring component and the lower bearing, and then the upper bearing is sleeved outside the main shaft, the lower side of the upper bearing is limited by the pressure ring, and then the upper end of the shell is closed to limit the top of the upper bearing. Therefore, during the installation process of the bearing seat, all parts can be installed on the upper end of the main shaft, and the installation efficiency is higher.

[0042] The present invention also provides a method for installing a bearing seat, in which parts are installed only at the upper end of the main shaft, thereby simplifying the installation steps of the bearing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the assembly structure of the main shaft, the bearing seat and the rotor provided in an embodiment of the present invention;

[0044] Figure 2 is a cross-sectional view of a main shaft and a bearing seat provided by an embodiment of the present invention;

[0045] Figure 3 is a schematic structural diagram of a half-ring assembly provided by an embodiment of the present invention;

[0046] Figure 4 is a schematic structural diagram of a main shaft and a bearing seat provided in an embodiment of the present invention;

[0047] Figure 5 It is a schematic structural diagram of an adjusting cone expansion ring provided in an embodiment of the present invention;

[0048] Figure 6 yes Figure 5 Cross-section view at AA in the middle.

[0049] In the figure:

[0050] 200, main shaft; 210, annular groove; 300, rotor; 310, sand pressing disc; 320, blade;

[0051] 10. Shell; 11. Installation space; 12. Shell body; 121. Cylinder; 122. Lower end cover; 123. Lower connecting bolt; 13. Upper cover assembly; 131. Fixing member; 132. Clearance adjustment member; 1321. Protrusion; 1322. Oil filling port; 133. Upper connecting bolt;

[0052] 20. Half ring assembly; 21. Half ring;

[0053] 30. Bearing; 31. First bearing; 311. Inner ring; 312. Outer ring; 313. Roller; 32. Second bearing; 40. Pressure ring; 41. Radial limiter; 42. Axial limiter; 50. Bushing; 60. Oil retainer ring; 71. Fixed cone sleeve; 72. Adjusting cone expansion ring; 721. Notch; 722. Connecting part; 723. Adjusting part; 73. Adjusting member; 90. Sealing ring. DETAILED DESCRIPTION

[0054] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0055] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0058] In the mill in the coal water slurry concentration equipment, the main shaft 200 drives the rotor 300 to rotate, such as Figure 1 As shown, the main shaft 200 extends along a preset direction, and the rotor 300 includes a sand pressing disc 310 and a plurality of blades 320 fixedly connected to the main shaft 200 along the preset direction. When installing the bearing seat, the two bearings 30 need to be installed from both ends of the main shaft 200, which makes the installation process of the bearing 30 close to the blade 320 complicated and needs to be operated through a very long shaft section, resulting in low installation efficiency.

[0059] In order to solve the above problems, this embodiment provides a bearing seat, in which two bearings 30 can be installed from one end of the main shaft 200. Figure 2 As shown, the main shaft 200 extends along a preset direction and is provided with an annular groove 210. The bearing seat includes a housing 10, a half-ring assembly 20, two bearings 30, a pressure ring 40 and a sleeve 50. An installation space 11 is formed in the housing 10 and is sealed and surrounded on the outside of the main shaft 200. At least the upper end of the housing 10 can be opened or closed. The half-ring assembly 20 includes at least two half-rings 21. At least two half-rings 21 are embedded in the annular groove 210 and protrude from the peripheral side of the main shaft 200. The two bearings 30 are sleeved on The two bearings 30 are installed in the installation space 11 outside the main shaft 200 and are respectively located on both sides of the half ring 21; at least part of the pressure ring 40 is sleeved outside the half ring assembly 20 and is limited by the half ring assembly 20 in a preset direction, and the two ends of one bearing 30 are respectively limited by the top of the shell 10 and the pressure ring 40; the shaft sleeve 50 is sleeved on the main shaft 200 and one end abuts against the side of the half ring 21 away from the pressure ring 40, and the two ends of the other bearing 30 are respectively limited by the other end of the shaft sleeve 50 and the bottom of the shell 10.

[0060] In the above-mentioned bearing seat, since the main shaft 200 is provided with an annular groove 210, the half ring assembly 20 in the bearing seat is separately arranged from the main shaft 200. When the bearing 30 (the lower bearing 30) on the side close to the rotor 300 is installed, the half ring assembly 20 is not installed on the main shaft 200, so the bearing 30 can be inserted into the main shaft 200 from the end of the main shaft 200 away from the rotor 300 (hereinafter referred to as the upper end) for installation, that is, the housing 10 is first mounted on the outside of the main shaft 200, and then the lower bearing 30 is installed from the upper end into the housing 10, and then the sleeve 50, the half ring assembly 20 and the pressure ring 40 are sequentially mounted, wherein, After the lower bearing 30 and the sleeve 50 are installed, the semi-ring assembly 20 is embedded in the annular groove 210 and protrudes from the circumferential surface of the main shaft 200. The pressure ring 40 serves to fix the semi-ring assembly 20. Thus, the two ends of the sleeve 50 respectively abut the semi-ring assembly 20 and the lower bearing 30. The upper bearing 30 is then mounted on the outside of the main shaft 200. The lower side of the upper bearing 30 is limited by the pressure ring 40. The upper end of the housing 10 is then closed to limit the top of the upper bearing 30. Therefore, during the installation process of the bearing seat, all parts can be installed on the upper end of the main shaft 200, and the installation efficiency is higher.

[0061] In addition, when parts in the bearing seat need to be removed or replaced, especially parts near one end of the rotor 300, there is no need to spend a long time to remove the blades 320 and the sand pressing disc 310. The parts can be removed from the upper end of the main shaft 200 one by one for replacement.

[0062] For the sake of convenience, the upper bearing 30 is defined as a first bearing 31 , and the lower bearing 30 is defined as a second bearing 32 .

[0063] Alternatively, if Figure 2 As shown, the pressure ring 40 includes a radial limiting portion 41 and an axial limiting portion 42, wherein the radial limiting portion 41 is disposed outside the half ring assembly 20; the axial limiting portion 42 is connected to the radial limiting portion 41 and disposed outside the main shaft 200, and one of the bearings 30, namely the first bearing 31, is limited in a preset direction by the axial limiting portion 42. It can be understood that the inner hole diameter of the radial limiting portion 41 is larger than the inner hole diameter of the axial limiting portion 42, so that the pressure ring 40 can take into account both the fixing of the half ring assembly 20 and the limiting of the first bearing 31.

[0064] In this embodiment, two half rings 21 are provided, and the two half rings 21 are spaced end to end so that the half rings 21 can be installed without a negative angle when embedded in the annular groove 210. In other embodiments, three or more half rings 21 can be provided, which is not limited here.

[0065] It should be noted that the installation space 11 is large enough to allow the half ring 21 to extend into the space outside the annular groove 210 and then be embedded in the annular groove 210 .

[0066] Alternatively, if Figure 2 As shown, an oil retainer ring 60 is arranged between the first bearing 31 and the pressure ring 40. The oil retainer ring 60 is sleeved outside the main shaft 200 and its diameter is adapted to the inner diameter of the housing 10. Through the above arrangement, when oil is injected into the housing 10, the oil retainer ring 60 can block part of the oil at the top of the installation space 11, so that the first bearing 31 remains in a state of being soaked in grease, thereby ensuring the normal rotation of the first bearing 31; and as the oil retainer ring 60 rotates, since the housing 10 is stationary, a small gap is formed between it and the inner wall of the housing 10, so that part of the grease flows downward to be soaked in the second bearing 32.

[0067] In another embodiment, the oil deflector ring 60 and the pressure ring 40 may also be directly integrally formed into one piece, which can reduce the number of steps for installing the parts.

[0068] Optionally, both bearings 30 are tapered roller bearings. Taking the first bearing 31 as an example, the tapered roller bearing includes an inner ring 311, a plurality of rollers 313 and an outer ring 312 which are sleeved from the inside to the outside in sequence, the inner ring 311 is sleeved on the outer periphery of the main shaft 200, the housing 10 is sleeved on the outer periphery of the outer ring 312, and the inner ring 311 and the outer ring 312 are staggered in a preset direction. Through the above arrangement, different from the one-time installation of ordinary bearings, when installing the second bearing 32, the outer ring 312 and the inner ring 311 can be installed in the order of installation, and when installing the first bearing 31, the inner ring 311 can be installed first and then the outer ring 312, which reduces the difficulty of installing the bearing 30 in a narrow space.

[0069] It should be noted that during the installation of the bearing seat, the main shaft 200 is placed horizontally, and after installation, the main shaft 200 is hoisted to the installation position together with the bearing seat. During the installation of the main shaft 200, for the rotor 300 weighing more than 10 tons, adjusting the concentricity between it and the main housing of the mill is a time-consuming and complicated process, which involves multiple hoisting, placing adjustment shims, and using a crowbar for fine-tuning.

[0070] To solve the above problems, see Figure 2 , Figure 4-Figure 6The bearing seat further comprises a fixed cone sleeve 71 and an adjusting cone expansion ring 72. The fixed cone sleeve 71 is fixed to the main housing of the mill, and the inner hole side wall of the fixed cone sleeve 71 is tilted inward from top to bottom; the adjusting cone expansion ring 72 comprises a connecting portion 722 and an adjusting portion 723. The fixed cone sleeve 71 is sleeved on the outer side of the adjusting portion 723, and the outer wall of the adjusting portion 723 is tilted inward from top to bottom. The connecting portion 722 is connected to the adjusting portion 723. The connecting portion 722 and the end surface of the fixed cone sleeve 71 are connected through a plurality of adjusting members 73, and the connection depth of each adjusting member 73 in the fixed cone sleeve 71 is adjustable. Optionally, the adjusting member 73 is a self-locking bolt. Through the above arrangement, it is explained by way of example that, if the spindle 200 deflects to the left after measurement, the adjustment member 73 on the left side can be pressed downward, so that the connecting portion 722 is pressed downward, and the adjustment portion 723 "tilts up" with an effect similar to the other end of a lever, thereby "pushing" the spindle 200 back to the center position to the right. Of course, if the adjustment member 73 on the left side does not have enough space to press downward, the adjustment member 73 on the right side can be loosened to achieve the same effect. Figure 4 A plurality of adjusting members 73 are provided in the axial direction, so that corresponding adjustments can be made regardless of the direction in which the main shaft 200 is deflected.

[0071] See also Figure 6 In the longitudinal section, the angle of the outer wall of the adjustment portion 723 at both ends of the diameter is α, 2°≤α≤6°. Within this range, the inclination angle will not be too large or too small, ensuring a better lifting effect. In this embodiment, α=4°, in other embodiments, α=5°, α=3.5° or α=5.5°, which is not limited here.

[0072] Alternatively, if Figure 4 and Figure 5 As shown, the adjusting cone expansion ring 72 is provided with a notch 721. Through the above arrangement, when the adjusting member 73 is adjusted alone, the other adjusting members 73 are less affected, and at the same time, the deformation capacity of the adjusting cone expansion ring 72 is improved to prevent the entire circle of the adjusting cone expansion ring 72 from being easily broken by the local pressure of the adjusting member 73.

[0073] Alternatively, if Figure 2 As shown, the housing 10 includes a housing body 12 and an upper cover assembly 13. The housing body 12 forms an installation space 11 and has an upper end open. The upper cover assembly 13 includes a fixing member 131 and a gap adjustment member 132. The fixing member 131 is connected to the open end of the housing body 12. The gap adjustment member 132 is threadedly connected to the fixing member 131. The lower end of the gap adjustment member 132 abuts against the top of the upper bearing 30 (i.e., the first bearing 31). By adjusting the screw-in depth of the gap adjustment member 132 and the fixing member 131, the purpose of adjusting the clearance of the tapered roller bearing is achieved, and the smooth rotation of the rotor 300 below is ensured.

[0074] Alternatively, if Figure 2 and Figure 4 As shown, a plurality of protrusions 1321 are convexly provided on the end surface of the gap adjustment member 132, and the plurality of protrusions 1321 are arranged at intervals along the circumference of the gap adjustment member 132. Through the above arrangement, it is convenient for the operator to screw the gap adjustment member 132 from the outside. Specifically, a tool with a groove can be used to engage with the protrusion 1321 and then screw it.

[0075] Alternatively, if Figure 4 As shown, an oil filling port 1322 is provided on the gap adjusting member 132 . Since the wall thickness of the gap adjusting member 132 is relatively thick, the strength of the gap adjusting member 132 is less affected after the hole is opened.

[0076] Alternatively, if Figure 2 and Figure 4 As shown, the fixing member 131 and the housing body 12 are fixed by upper connecting bolts 133 .

[0077] Optionally, the shell body 12 includes a cylinder 121, a lower end cover 122 and a lower connecting bolt 123. Both ends of the cylinder 121 are open. One end of the cylinder 121 is fixedly connected to the above-mentioned fixing member 131, and the other end of the cylinder 121 is connected to the lower end cover 122 through the lower connecting bolt 123. When installing the shell 10, the lower end cover 122 is first sleeved on the outside of the main shaft 200, and then the cylinder 121 is connected to the lower end cover 122, and then other parts in the installation space 11 are installed.

[0078] Alternatively, if Figure 2 As shown, a sealing ring 90 is arranged between the upper end of the shell 10 (i.e., the gap adjustment part) and the main shaft 200, and a sealing ring 90 is arranged between the bottom end of the shell 10 (i.e., the lower end cover 122) and the main shaft 200, thereby ensuring the sealing between the shell 10 and the main shaft 200, preventing dust and the like from entering the installation space 11, and preventing grease from overflowing.

[0079] Among them, the sealing ring 90 needs to be replaced from time to time. For the sealing ring 90 on the lower end cover 122, when removing the sealing ring 90, there is no need to remove the sand pressing plate 310 and the blade 320 at the end of the rotor 300. It is only necessary to remove the parts one by one at the upper end of the main shaft 200 and then replace the sealing ring 90.

[0080] This embodiment also provides a bearing seat installation method for installing the above-mentioned bearing seat, and the bearing seat installation method includes:

[0081] S10: Mount the housing 10 on the spindle 200, keeping the upper end of the housing 10 open;

[0082] S20: Install the lower end bearing 30 (ie, the second bearing 32) outside the main shaft 200 and in the installation space 11;

[0083] S30: Sleeve the shaft sleeve 50 on the outside of the main shaft 200;

[0084] S40: inserting at least two half rings 21 into the annular groove 210, and then sleeve the pressure ring 40 on the outside of the half ring assembly 20;

[0085] S50: Adjust the position of the housing 10 so that the bottom of the housing 10 abuts against the bottom of the bearing 30 at the lower end, and the two ends of the sleeve 50 abut against the half ring assembly 20 and the bearing 30 at the lower end respectively;

[0086] S60: Install the top bearing 30 and then close the upper end of the housing 10 so that both ends of the top bearing 30 are respectively limited by the top of the housing 10 and the pressure ring 40 .

[0087] The above-mentioned method for installing the bearing seat only requires installation of parts at the upper end of the main shaft 200, thereby simplifying the installation steps of the bearing seat.

[0088] Optionally, the method for installing the bearing seat further includes:

[0089] S70: Measure the concentricity of the bearing 30 and the fixed cone sleeve 71, and adjust the connection depth of the multiple adjustment members 73 accordingly according to the deflection direction of the axis of the main shaft 200. For example, if the main shaft 200 deflects to the left after the measurement, the adjustment member 73 on the left side can be pressed down, so that the connecting part 722 is pressed down, and the adjustment part 723 is "tilted" with the effect of the other end of the lever, and then the main shaft 200 is "pushed" back to the center position to the right. Of course, if the adjustment member 73 on the left side does not have enough space to press down, the adjustment member 73 on the right side can be loosened to achieve the same effect. Through the above settings, the concentricity of the main shaft 200 and the main housing of the large mill is simply adjusted, and the operation is convenient.

[0090] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bearing seat connected to the main shaft (200), characterized in that: The main shaft (200) extends along a preset direction and is provided with an annular groove (210); the bearing seat comprises: A housing (10), wherein an installation space (11) is formed in the housing (10) and is sealed and surrounded outside the main shaft (200), and at least an upper end of the housing (10) can be opened or closed; A half ring assembly (20) comprises at least two half rings (21), wherein at least two of the half rings (21) are embedded in the annular groove (210) and protrude from the circumference of the main shaft (200); Two bearings (30) are both sleeved outside the main shaft (200) and are respectively located on both sides of the half ring (21), and the two bearings (30) are both installed in the installation space (11); A pressure ring (40), at least a portion of which is sleeved outside the half-ring assembly (20) and is limited by the half-ring assembly (20) in the preset direction, wherein two ends of one of the bearings (30) are respectively limited by the top of the housing (10) and the pressure ring (40); A shaft sleeve (50) is sleeved on the main shaft (200) and one end of which abuts against a side of the half ring (21) away from the pressure ring (40). Two ends of the other bearing (30) are respectively limited by the other end of the shaft sleeve (50) and the bottom of the housing (10).

2. The bearing seat according to claim 1, characterized in that: The pressure ring (40) comprises: A radial limiting portion (41) is arranged around the outside of the semi-ring assembly (20); An axial limiting portion (42) is connected to the radial limiting portion (41) and is disposed outside the main shaft (200), wherein one of the bearings (30) is limited in the preset direction by the axial limiting portion (42).

3. The bearing seat according to claim 1, characterized in that: The bearing (30) located at the top is defined as a first bearing (31), and an oil retaining ring (60) is provided between the first bearing (31) and the pressure ring (40). The oil retaining ring (60) is sleeved outside the main shaft (200) and has a diameter that matches the inner diameter of the housing (10).

4. The bearing seat according to claim 1, characterized in that: The two bearings (30) are both tapered roller bearings.

5. The bearing seat according to any one of claims 1 to 4, characterized in that: The bearing seat also includes: A fixed cone sleeve (71), the fixed cone sleeve (71) is fixed to the main housing (10) of the mill, and the inner hole side wall of the fixed cone sleeve (71) is inclined inward from top to bottom; The adjusting cone expansion ring (72) comprises a connecting portion (722) and an adjusting portion (723); the fixed cone sleeve (71) is sleeved on the outside of the adjusting portion (723); the outer wall of the adjusting portion (723) is inclined inward from top to bottom; the connecting portion (722) is connected to the adjusting portion (723); the connecting portion (722) and the end surface of the fixed cone sleeve (71) are connected via a plurality of adjusting pieces (73); and the connection depth of each adjusting piece (73) on the fixed cone sleeve (71) is adjustable.

6. The bearing seat according to claim 5, characterized in that: The adjusting cone expansion ring (72) is provided with a notch (721).

7. The bearing seat according to any one of claims 1 to 4, characterized in that: The housing (10) comprises: A housing body (12) having an installation space (11) formed therein and an opening at an upper end; The upper cover assembly (13) comprises a fixing member (131) and a gap adjusting member (132), wherein the fixing member (131) is connected to the open end of the housing body (12), the gap adjusting member (132) is threadedly connected to the fixing member (131), and the lower end of the gap adjusting member (132) abuts against the top of the bearing (30) at the upper end.

8. The method for installing the bearing seat is characterized in that: Used to install the bearing seat according to any one of claims 1 to 7, the installation method of the bearing seat comprises: S10: fitting the housing (10) onto the main shaft (200), keeping the upper end of the housing (10) open; S20: installing the bearing (30) at the lower end outside the main shaft (200) and locating it in the installation space (11); S30: sleeve the shaft sleeve (50) on the outside of the main shaft (200); S40: embedding at least two of the half rings (21) into the annular groove (210), and then sleeve the pressure ring (40) on the outside of the half ring assembly (20); S50: adjusting the position of the housing (10) so that the bottom of the housing (10) abuts against the bottom of the bearing (30) at the lower end, and the two ends of the sleeve (50) abut against the half-ring assembly (20) and the bearing (30) at the lower end respectively; S60: Install the bearing (30) at the top, and then close the upper end of the housing (10) so that the two ends of the bearing (30) at the top are respectively limited by the top of the housing (10) and the pressure ring (40).

9. The method for installing a bearing seat according to claim 8, characterized in that: The bearing seat also includes: A fixed cone sleeve (71), the fixed cone sleeve (71) is fixed to the main housing of the mill, and the inner hole side wall of the fixed cone sleeve (71) is inclined inward from top to bottom; The adjusting cone expansion ring (72) comprises a connecting portion (722) and an adjusting portion (723), the fixed cone sleeve (71) is sleeved on the outside of the Oushensu adjusting portion (723), the outer wall of the adjusting portion (723) is inclined inward from top to bottom, the connecting portion (722) is connected to the adjusting portion (723), the connecting portion (722) and the end surface of the fixed cone sleeve (71) are connected via a plurality of adjusting pieces (73), and the connection depth of each adjusting piece (73) on the fixed cone sleeve (71) is adjustable; The bearing seat installation method further includes: S70: measuring the concentricity of the bearing (30) and the fixed cone sleeve (71), and adjusting the connection depth of the plurality of adjustment members (73) accordingly according to the axial deflection direction of the main shaft (200).

10. The method for installing a bearing seat according to claim 8, characterized in that: A sealing ring (90) is provided between the upper end of the housing (10) and the main shaft (200), and a sealing ring (90) is provided between the bottom end of the housing (10) and the main shaft (200).

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