1. A roller structure, comprising:

the bearing seat is provided with a gasket groove on the inner wall;

the roller bearing is arranged in the bearing seat;

the first gasket is arranged in the gasket groove, and at least part of the first gasket extends out of the gasket groove and abuts against the roller bearing, so that a gap is reserved between the roller bearing and the bearing seat.

2. The roller structure of claim 1, wherein the roller bearing comprises:

a bearing body;

the first check ring is arranged on one side of the bearing body;

the second retainer ring is arranged on the other side of the bearing body;

the bearing seat comprises a bearing seat body, a bearing seat body and a bearing seat, wherein a first retaining ring groove and a second retaining ring groove are formed in the inner wall of the bearing seat body, at least part of the first retaining ring is located in the first retaining ring groove, and at least part of the second retaining ring is located in the second retaining ring groove.

3. The roller structure of claim 1, further comprising:

the oil filling grooves are formed in the inner wall of the bearing seat, the number of the gasket grooves is two, the oil filling grooves are located between the two gasket grooves, and one first gasket is arranged in each gasket groove;

the oil filling hole is formed in the outer wall of the bearing seat and communicated with the oil filling groove;

and the oil storage pool is arranged on the bearing seat.

4. The roller structure of any one of claims 1 to 3, further comprising:

the roller shaft is connected to the roller bearing;

the roller shaft sealing ring is sleeved on the roller shaft and is positioned between the roller shaft and the bearing seat;

and the limiting part is arranged on the roller shaft and used for limiting the roller shaft sealing ring.

5. The roller structure of claim 4, further comprising:

and the exhaust hole is formed in the limiting piece.

6. The roller structure of claim 4, further comprising:

the second gasket is abutted against the inner ring of the roller bearing, and a gap is reserved between the end surfaces of the roller shafts;

a first fastener connected to the roller axle through the second washer.

7. The roller structure of claim 4, further comprising:

the transmission wheel is sleeved on the roller shaft.

8. The roller structure of claim 7, further comprising:

the spacer bush is sleeved on the roller shaft, abuts against the roller bearing and is connected to the driving wheel;

and the expansion sleeve is arranged between the driving wheel and the roller shaft.

9. The roller structure of claim 7, further comprising:

the expansion sleeve gasket is arranged in the driving wheel and positioned at one end of the roller shaft;

and the second fastening piece is connected to the end surface of the roller shaft through the expansion sleeve gasket.

10. The roller structure of any one of claims 1 to 3,

the bearing frame is two, every all seted up the packing ring slot on the inner wall of bearing frame, the quantity adaptation of first packing ring in the quantity of packing ring slot.

Background

The roller is required to be used for drafting and processing the fiber for many times in the working procedures of drawing, combing and the like of the cotton spinning process flow. The main mechanical executing device for completing the operation is the roller, the highest rotating speed of the roller determines the highest output speed of each machine type in the process, and the production efficiency of the machine is influenced by the maintenance period and the service life of a roller bearing. Common roller bearing is because structural restriction in the aspects such as location, installation, support, lubricated mode, and the roller bearing temperature rise, too high roller bearing temperature rise can be with heat transfer to bearing frame naturally, and the car stop worker scalds easily when carrying out daily operation.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of this, the present application provides a roller structure, including:

the bearing seat is provided with a gasket groove on the inner wall;

the roller bearing is arranged in the bearing seat;

the first gasket is arranged in the gasket groove, and at least part of the first gasket extends out of the gasket groove and abuts against the roller bearing, so that a gap is reserved between the roller bearing and the bearing seat.

In a first possible implementation manner of the embodiment of the present application, the roller bearing includes:

a bearing body;

the first check ring is arranged on one side of the bearing body;

the second retainer ring is arranged on the other side of the bearing body;

the bearing seat comprises a bearing seat body, a bearing seat body and a bearing seat, wherein a first retaining ring groove and a second retaining ring groove are formed in the inner wall of the bearing seat body, at least part of the first retaining ring is located in the first retaining ring groove, and at least part of the second retaining ring is located in the second retaining ring groove.

In a second possible implementation manner of the embodiment of the present application, the roller structure further includes:

the oil filling grooves are formed in the inner wall of the bearing seat, the number of the gasket grooves is two, the oil filling grooves are located between the two gasket grooves, and one first gasket is arranged in each gasket groove;

the oil filling hole is formed in the outer wall of the bearing seat and communicated with the oil filling groove;

and the oil storage pool is arranged on the bearing seat.

In a third possible implementation manner of the embodiment of the present application, the roller structure further includes:

the roller shaft is connected to the roller bearing;

the roller shaft sealing ring is sleeved on the roller shaft and is positioned between the roller shaft and the bearing seat;

and the limiting part is arranged on the roller shaft and used for limiting the roller shaft sealing ring.

In a fourth possible implementation manner of the embodiment of the present application, the roller structure further includes:

and the exhaust hole is formed in the limiting piece.

In a fifth possible implementation manner of the embodiment of the present application, the roller structure further includes:

the second gasket is abutted against the inner ring of the roller bearing, and a gap is reserved between the end surfaces of the roller shafts;

a first fastener connected to the roller axle through the second washer.

In a sixth possible implementation manner of the embodiment of the present application, the roller structure further includes:

the transmission wheel is sleeved on the roller shaft.

In a seventh possible implementation manner of the embodiment of the present application, the roller structure further includes:

the spacer bush is sleeved on the roller shaft, abuts against the roller bearing and is connected to the driving wheel;

and the expansion sleeve is arranged between the driving wheel and the roller shaft.

In an eighth possible implementation manner of the embodiment of the present application, the roller structure further includes:

the expansion sleeve gasket is arranged in the driving wheel and positioned at one end of the roller shaft;

and the second fastening piece is connected to the end surface of the roller shaft through the expansion sleeve gasket.

In a ninth possible implementation manner of the embodiment of the application, the number of the bearing seats is two, each of the inner walls of the bearing seats is provided with a gasket groove, and the number of the first gaskets is adapted to the number of the gasket grooves.

Compared with the prior art, the invention at least comprises the following beneficial effects: according to the roller structure provided by the invention, the bearing seat is provided with the gasket groove, and the gasket groove is further internally provided with the first gasket, so that a gap is formed between the roller bearing and the bearing seat; on one hand, a gap is formed between the roller bearing and the bearing seat, so that when the roller bearing generates heat, excessive heat can be prevented from being transferred to the bearing seat, the temperature of the bearing seat can be reduced, and workers can be prevented from being scalded; on the other hand, through forming the clearance between roller bearing and the bearing frame, release space is provided for roller shaft and roller bearing at radial ascending thermal energy, make roller shaft and roller bearing can expand at axis and footpath, avoided roller bearing to increase extra load and make roller bearing's temperature rise because the radial direction is restricted, be favorable to reducing roller shaft and roller bearing's temperature, can improve the life of leather roller, can reduce to damage textile product because of the leather roller high temperature, be favorable to improving the quality of product.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic block diagram of a roller structure according to one embodiment provided herein;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

FIG. 5 is a schematic block diagram of a first washer mounting location of a roller structure according to one embodiment provided herein;

FIG. 6 is a schematic block diagram of one angle of a roller structure of one embodiment provided herein;

FIG. 7 is a schematic block diagram of another angle of a roller structure of an embodiment provided herein;

fig. 8 is a schematic configuration diagram of a lubricant supply path of a roller structure according to an embodiment of the present application.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 8 is:

1, a bearing seat, 2 gasket grooves, 3-roller bearings, 4 first gaskets, 5 oiling grooves, 6 oiling holes, 7 oil storage pools, 8 roller shafts, 9 roller shaft sealing rings, 10 limiting pieces, 11 exhaust holes, 12 second gaskets, 13 first fasteners, 14 transmission wheels, 15 spacer bushes, 16 expansion bushes, 17 expansion bush gaskets, 18 second fasteners and 19 oiling channels;

101 a first bearing seat, 102 a second bearing seat, 301 a first roller bearing, 302 a second roller bearing, 303 a bearing body, 304 a first retainer ring, 305 a second retainer ring.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

As shown in fig. 1, the present application provides a roller structure, including: the bearing seat comprises a bearing seat 1, wherein a gasket groove 2 is formed on the inner wall of the bearing seat 1; the roller bearing 3 is arranged in the bearing seat 1; the first gasket 4 is arranged in the gasket groove 2, and at least part of the first gasket 4 extends out of the gasket groove 2 and abuts against the roller bearing 3, so that a gap is reserved between the roller bearing 3 and the bearing seat 1.

According to the roller structure provided by the invention, the bearing seat 1 is provided with the gasket groove 2, and the gasket groove 2 is further internally provided with the first gasket 4, so that a gap is formed between the roller bearing 3 and the bearing seat 1; on one hand, a gap is formed between the roller bearing 3 and the bearing seat 1, when the roller bearing 3 generates heat, excessive heat can be prevented from being transferred to the bearing seat 1, the temperature of the bearing seat 1 can be reduced, and workers can be prevented from being scalded; on the other hand, a gap is formed between the roller bearing 3 and the bearing seat 1, so that a release space is provided for the thermal expansion of the roller shaft 8 and the roller bearing 3 in the radial direction, the roller shaft 8 and the roller bearing 3 can expand in the axial direction and the radial direction, the phenomenon that the roller bearing 3 increases extra load due to the limitation of the radial direction to increase the temperature of the roller bearing 3 is avoided, the temperature of the roller shaft 8 and the temperature of the roller bearing 3 are favorably reduced, the service life of the leather roller is prolonged, the damage to textile products due to overhigh temperature of the leather roller is reduced, and the quality of the products is favorably improved; on the other hand, a gap is formed between the roller bearing 3 and the bearing seat 1, so that the roller bearing 3 is convenient to disassemble and assemble.

As shown in fig. 1 to 5, in some examples, the first gasket 4 may be an O-ring, which facilitates the formation of a gap between the roller bearing 3 and the bearing housing 1; first packing ring 4 can be made by rubber materials, through the selection of rubber materials, is favorable to further reducing the heat transfer efficiency between roller bearing 3 and the bearing frame 1, does benefit to and cools down for bearing frame 1, can avoid scalding the staff because of bearing frame 1 high temperature.

As shown in fig. 1 to 5, in some examples, in order to stabilize the gap between the bearing seat 1 and the roller bearing 3 and avoid fluctuation of the gap distance, two washer grooves 2 may be provided on each bearing seat 1, and one first washer 4 may be provided in each washer groove 2, so that the roller bearing 3 can be fixed and positioned more reliably by maintaining the gap through the two first washers 4.

As shown in fig. 2 and 3, in some examples, the roller bearing 3 includes: a bearing body 303; a first retainer ring 304 provided on one side of the bearing body 303; a second retainer 305 provided on the other side of the bearing body 303; a first retaining ring groove and a second retaining ring groove are formed in the inner wall of the bearing seat 1, at least a part of the first retaining ring 304 is located in the first retaining ring groove, and at least a part of the second retaining ring 305 is located in the second retaining ring groove.

The roller bearing 3 includes: bearing body 303, first retaining ring 304 and second retaining ring 305, set up first retaining ring slot and second retaining ring slot simultaneously on bearing frame 1, and first packing ring 4 and second packing ring 12 set up respectively at first retaining ring slot and second retaining ring slot, can play location and spacing effect for roller bearing 3 through first retaining ring 304 and second retaining ring 305, make roller bearing 3 use more safety, it is more convenient to install, the equipment of roller structure is more convenient.

As shown in fig. 1 to 5, in some examples, to facilitate the installation of the roller bearing 3, a first retainer groove and a second retainer groove formed in the inner wall of the bearing housing 1 may be located outside the gasket groove 2.

As shown in fig. 8, in some examples, the roller structure further comprises: the oil filling device comprises two oil filling grooves 5, two gasket grooves 2 and two oil filling grooves 5, wherein the oil filling grooves 5 are formed in the inner wall of a bearing seat 1, the two gasket grooves 2 are positioned between the two gasket grooves 2, and a first gasket 4 is arranged in each gasket groove 2; the oil filling hole 6 is formed in the outer wall of the bearing seat 1 and communicated with the oil filling groove 5; and the oil storage pool 7 is arranged on the bearing seat 1.

The roller structure has still included setting up groove 5, tank filler sleeve 6 and the oil storage tank 7 of refueling on bearing frame 1, and at the in-process that adds lubricating oil and lubricate, set up the oil cup in tank filler sleeve 6 department, lubricating oil enters into oil storage tank 7 through refuelling channel 19, and along with roller bearing 3's rotation, lubricating oil can enter into roller bearing 3 and lubricate in, is favorable to improving the rotational speed of roller shaft 8, can improve product production efficiency.

Through the arrangement of the oil storage pool 7, more lubricating oil can participate in lubricating the roller bearing 3, so that the lubricating effect of the roller bearing 3 is better.

The oiling groove 5 is positioned between the two gasket grooves 2, and one first gasket 4 is arranged in each gasket groove 2, so that the oiling groove 5 is positioned between the two first gaskets 4, the lubricating oil is in a relatively sealed environment, and the roller bearing 3 is lubricated favorably.

In some examples, the size of the first gasket 4 may be slightly larger than the size of the first retaining ring 304 and the second retaining ring 305, considering that the first gasket 4 needs sealing grease even if it supports the roller bearing 3. And in order to ensure the strength of the first retainer ring groove, the second retainer ring groove and the gasket groove 2, a gap needs to be left between the gasket groove 2 and the first retainer ring groove and the second retainer ring groove.

It will be appreciated that in order to further enhance the lubricating effect of the roller bearing 3, an oil seal may be provided to seal the lubricating oil.

As shown in fig. 1-5, in some examples, the roller structure further comprises: the roller shaft 8, the roller shaft 8 is connected to the roller bearing 3; the roller shaft sealing ring 9 is sleeved on the roller shaft 8 and is positioned between the roller shaft 8 and the bearing block 1; and the limiting piece 10 is arranged on the roller shaft 8 and used for limiting the roller shaft sealing ring 9.

Considering the working condition environment of the roller structure, in the normal operation process of the roller structure, impurities such as flying flowers or particles brought out by the high-speed rotation of the roller can be gathered from the roller shaft 8 to the bearing seats 1 on the two sides, a dead angle area is easily formed on the roller structure, the impurities cannot be completely processed in daily cleaning, the lubricating effect of the roller bearing 3 can be influenced after the flying flowers or the impurities are gathered to a certain amount, and the roller bearing 3 can be clamped and cannot rotate even under the condition of poor cleaning. Therefore, the roller shaft sealing ring 9 is arranged on the roller shaft 8 to play a role in sealing the gap between the roller shaft 8 and the roller bearing 3, sealing the gap between the roller bearing 3 and the bearing seat 1 and sealing the gap between the roller shaft 8 and the bearing seat 1, so that the failure rate of the roller structure can be reduced.

As shown in fig. 1 to 5, in some examples, the limiting member 10 may be a retainer ring.

In some examples, the roller structure further comprises: the exhaust hole is arranged on the limiting part 10.

Considering that the lubricating oil in the roller bearing 3 needs to be completely replaced when the roller structure is regularly maintained, and the old lubricating oil in the roller bearing 3 needs to be completely removed at this time, the roller bearing 3 is close to the roller shaft 8 side, and the roller shaft sealing ring 9 is arranged for preventing dust from entering. The roller shaft sealing ring 9 is not beneficial to discharging lubricating oil in the bearing, so that the limiting piece 10 is provided with an exhaust hole to facilitate the release of pressure in the roller bearing 3 and the replacement of the lubricating oil.

As shown in fig. 1 and 2, in some examples, the roller structure further comprises: a second washer 12, wherein the second washer 12 is abutted against the inner ring of the roller bearing 3, and a gap is reserved between the end surfaces of the roller shaft 8; and a first fastening member 13, wherein the first fastening member 13 is connected to the roller shaft 8 through the second washer 12.

The roller structure comprises a second washer 12 and a first fastener 13, and the first fastener 13 is connected to the roller shaft 8 through the second washer 12 to fix and position the roller shaft 8.

In some examples, the first fastener 13 may be a screw.

As shown in fig. 1 and 4, in some examples, the roller structure further comprises: the transmission wheel 14 is sleeved on the roller shaft 8.

The roller structure also comprises a driving wheel 14, the driving wheel 14 is driven to rotate through a driving mechanism, and the roller shaft 8 can be driven to rotate by the driving wheel 14.

As shown in fig. 1 and 4, in some examples, the roller structure further comprises: the spacer bush 15 is sleeved on the roller shaft 8, abuts against the roller bearing 3 and is connected with the driving wheel 14; and the expansion sleeve 16 is arranged between the transmission wheel 14 and the roller shaft 8.

The roller structure also comprises a spacer bush 15 and an expansion bush 16, and the roller shaft 8 and the driving wheel 14 can be connected through the arrangement of the expansion bush 16, so that the roller shaft 8 can be driven to rotate through the driving wheel 14. And the spacer bush 15 is sleeved on the roller shaft 8 and is abutted against the roller bearing 3 to be connected to the driving wheel 14, so that the driving wheel 14 can be axially positioned, the rotation of the roller shaft 8 can be more reliable, the eccentric rotation of the roller shaft 8 can be avoided, and the temperature and the noise during the operation of the roller structure can be reduced.

As shown in fig. 1 and 4, in some examples, the roller structure further comprises: an expansion sleeve gasket 17 arranged in the driving wheel 14 and positioned at one end of the roller shaft 8; and a second fastening piece 18 is connected to the end face of the roller shaft 8 through the expansion sleeve washer 17.

The roller structure also comprises an expansion sleeve gasket 17 and a second fastening piece 18, and the expansion sleeve gasket 17 and the second fastening piece 18 are arranged to be beneficial to fixing the roller shaft 8 and the transmission wheel 14.

As shown in fig. 1, 6 and 7, in some examples, the number of the bearing seats 1 is two, each bearing seat 1 has a gasket groove 2 opened on an inner wall thereof, and the number of the first gaskets 4 is adapted to the number of the gasket grooves 2.

In some examples, the second fastener 18 may be a screw.

The bearing blocks 1 are two, and the roller shafts 8 can be supported more reliably by the two bearing blocks 1 through supporting the roller shafts 8. And a gasket groove 2 is arranged in each bearing seat 1, so that the bearing seats 1, the roller bearings 3 and the roller shafts 8 can be further cooled.

In some examples, the roller structure may be attached as follows:

as shown in fig. 1, the outer ring of the first roller bearing 301 located on the right side in fig. 1 fixes the outer ring of the bearing in the first retaining ring groove and the second retaining ring groove of the bearing seat 1 on the right side by using the first retaining ring 304 and the second retaining ring 305, the left inner ring of the first roller bearing 301 contacts with the right shoulder end surface of the roller shaft 8, the right inner ring of the first roller bearing 301 contacts with the first gasket 4, because the total length of the inner ring of the first roller bearing 301 is greater than the length of the right shoulder of the roller shaft 8, the first gasket 4 contacts with the right end surface of the inner ring of the first roller bearing 301 and keeps a certain gap with the right end surface of the roller shaft 8, the inner ring of the first roller bearing 301 can be completely fixed on the roller shaft 8 by the first fastener 13, and at this time, the inner ring and the outer ring of the first roller bearing 301 are completely fixed.

The outer ring of the second roller bearing 302 on the left side in fig. 1 fixes the outer ring of the bearing in the first retaining ring groove and the second retaining ring groove of the bearing seat 1 on the right side by using the first retaining ring 304 and the second retaining ring 305, the left side shoulder of the roller shaft 8 on the right side inner ring of the second roller bearing 302 contacts, the left side inner ring of the second roller bearing 302 contacts with the driving wheel 14 through the spacer sleeve 15, the driving wheel 14 is connected with the roller shaft 8 through the expansion sleeve 16, and the structure realizes that the axial position of the driving wheel 14 is also fixed when the driving wheel 14 is connected with the roller shaft 8 through the expansion sleeve 16. A certain distance is reserved between the side surface of the driving wheel 14 and the side bearing seat 1, and different torque requirements can be met only by replacing the spacer sleeve 15, so that the working efficiency is improved. Compare the keyway structure, increase keyway length, it is stronger to change 16 structural adaptability of bloated cover.

In some examples, the roller structure may be assembled by:

1. assembly of the first roller bearing 301:

a small amount of lubricant is applied to the outer surface of the first gasket 4 and is absorbed in the gasket groove 2 of the first bearing housing 101, and the first roller bearing 301 is pushed into the first bearing housing 101 from right to left in fig. 1. When the right side surface of the first roller bearing 301 passes through the groove of the first gasket 4, the first roller bearing 301 stops moving, a small amount of lubricating oil is coated on the outer surface of the first gasket 4 to be adsorbed in the gasket groove 2 of the first bearing seat 101, and then the axial position of the outer ring of the first roller shaft 8 is fixed by using the first retaining ring 304 and the second retaining ring 305. The limiting pieces 10 are arranged in the corresponding grooves, the roller shaft seal ring 9 is installed into the first bearing seat 101 from left to right, and the end face of the roller shaft seal ring 9 is in contact with the limiting pieces 10. The roller shaft 8 is threaded into the inner hole of the first roller bearing 301 from left to right until the shaft shoulder end surface of the roller shaft 8 contacts with the inner ring end surface of the first roller bearing 301. The roller shaft 8 and the first roller bearing 301 are fixed together using a first fastener 13 and a second washer 12.

2. Assembly of the second roller bearing 302

A small amount of lubricating oil is coated on the outer surface of the first gasket 4 to be adsorbed in the gasket groove 2 of the second bearing seat 102, and the second roller bearing 302 is pushed into the second bearing seat 102 from right to left. When the right side surface of the second roller bearing 302 passes through the position of the gasket groove 2 of the first gasket 4, the second roller bearing 302 stops moving, a small amount of lubricating oil is coated on the outer surface of the first gasket 4 to be adsorbed in the gasket groove 2 of the second bearing seat 102, and then the axial position of the outer ring of the second roller bearing 302 is fixed by using a first retaining ring 304 and a second retaining ring 305. And installing the determined limiting piece 10 in a corresponding groove of the second bearing seat 102, installing the roller shaft seal ring 9 into the second bearing seat 102 from right to left, and enabling the end face of the roller shaft seal ring 9 to be in contact with the limiting piece 10. The roller shaft 8 is penetrated into the inner hole of the second roller bearing 302 from right to left until the shaft shoulder end surface of the roller shaft 8 contacts with the inner ring end surface of the second roller bearing 302.

2. Assembly of the drive wheel 14

In the process of assembling the second roller bearing 302, the right side surface of the inner race of the second roller bearing 302 is in contact with the roller shaft 8, but the right side surface thereof is not positioned, and the transmission wheel 14 also has no axial positioning reference. In this embodiment, the spacer 15 is first installed so that its right side surface is in contact with the left side surface of the roller bearing 3, and then the transmission wheel 14 is installed. An expansion sleeve 16 is arranged between the roller shaft 8 and the transmission wheel 14. The drive wheel 14 is connected to the roller shaft 8 by means of an expansion sleeve 16, an expansion sleeve washer 17 and a second fastening member 18.

3. Assembly of lubrication channels

As shown in fig. 2 and fig. 6, an oil cup is installed on the front side of the bearing seat 1, when oil is added, the lubricating oil enters the oil storage tank 7 through the oil adding channel 19, and when the roller bearing 3 rotates, the lubricating oil enters the roller bearing 3 through the oil adding groove 5 to complete lubrication.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.