CN115634948B

CN115634948B - Wire rod forced air cooling system

Info

Publication number: CN115634948B
Application number: CN202211101789.0A
Authority: CN
Inventors: 张建辉; 秦正; 胡专; 刘建平; 彭敏
Original assignee: Baowu Group Echeng Iron and Steel Co Ltd
Current assignee: Baowu Group Echeng Iron and Steel Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2024-06-11
Anticipated expiration: 2042-09-09
Also published as: CN115634948A

Abstract

The invention belongs to the technical field of wire air cooling equipment, and in particular relates to a wire air cooling system which comprises a roller way, a heat preservation wall and a base wallboard, wherein a fixing device comprises: the bearing seat is a sealed cylinder as a whole, a central hole is formed in the middle of one end face, close to the roll shaft, of the bearing seat, an oil filling nozzle is arranged on the other end face, far away from the roll shaft, of the bearing seat, and a containing cavity is formed in the side wall of the cylinder; a seal ring embedded in the central hole; a bearing; the taper sleeve is sleeved outside the shaft neck of the roll shaft and is positioned between the bearing inner ring and the shaft neck; axial gaps are reserved at two ends of the taper sleeve respectively; the fastening screw rod penetrates through the cylindrical side wall of the bearing seat and is embedded into the chute on the edge of the outer ring of the bearing; and the locking part is sleeved outside one end of the taper sleeve with the smaller size. The invention can realize stable and reliable connection of the roll shaft, the bearing and the bearing seat, effectively prevent the abrasion of the inner cavities of the roll shaft and the bearing seat, ensure the long-time stable operation of the roller way and avoid production faults such as steel piling, roll breakage and the like of the air cooling line.

Description

Wire rod forced air cooling system

Technical Field

The invention belongs to the technical field of wire air cooling equipment, and particularly relates to a wire air cooling system.

Background

The stelmo controlled cooling process line roller way of the high-speed wire plant is provided with approximately 400 rollers, two heat preservation walls are arranged on two sides of the roller way, and the roller shafts are supported by outer spherical bearings with seats, which are arranged in holes of the base wall plates; the driving side is connected with the chain wheel and the chain in pairs, and the motor drives the speed reducer to drive; the driven side bearing fixes the bearing inner race to the roller shaft by a set screw. The original driven side bearing seat mounting mode is as follows: firstly, the bearing is arranged in a bearing seat hole from one side with a groove in the bearing seat, then the bearing and the bearing seat are arranged in a base wallboard hole and on the driven end of a roll shaft together, the inner ring of the bearing is locked on the roll shaft through a set screw, and the bearing seat is locked on a base wallboard through a fixed screw.

The inner ring of the driving side bearing of the roll shaft is pressed by the chain wheel and is a positioning end, and the shaft neck is not easy to wear, however, the driven side bearing has high roll shaft temperature, large roll shaft expansion and contraction amount and rapid roll process speed change, so that a set screw on the inner ring of the driven side bearing is easy to fall off, the inner ring of the bearing and the shaft neck slide relatively, the shaft neck is severely worn under the action of long time, the roll shaft shakes greatly, a chain is easy to jump and fall off, and production faults such as steel piling, roll breakage and the like of the air cooling line are caused.

The roll shaft is replaced and needs to pass through the holes of the heat-insulating wall and the base wall, the roll shaft blocked by the speed reducer and the motor can only pass through the driven side, then the chain wheel is thermally arranged on the driving side, the chain is connected, and the bearing seat is arranged. Because of high ambient temperature, heavy dust and high labor intensity, the time required for the dust removal is more than 1 hour, and the labor power is 3-4. Because the production task is tight, the daily repair time is short, only 40 minutes, the number of the roll shafts with the shaft necks being worn out and invalid is large, the cost of spare parts of the roll shafts is high, and the normal operation and the daily repair time arrangement of the production are seriously affected by a method for replacing the roll shafts.

Accordingly, there is a strong need in the art for a fixture that can be adapted for use in a wire air cooling system.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a wire air cooling system, which adopts a fixing device with a specific structure, can realize stable and reliable connection of a roll shaft, a bearing and a bearing seat, effectively prevent the inner cavities of the roll shaft and the bearing seat from being worn, ensure long-time stable operation of a roller way and avoid production faults such as steel piling, roller breakage and the like of an air cooling line.

In order to achieve the above object, the present invention provides a wire air cooling system, including a roller way for conveying wires, a heat insulation wall, and a base wallboard, wherein a roller shaft end of the roller way sequentially passes through the heat insulation wall and the base wallboard outwards, the wire air cooling system further includes a fixing device rotatably mounting a driven end of a roller shaft in the roller way on the base wallboard and located at an inner side of the base wallboard, and the fixing device includes:

The bearing seat is integrally a sealed cylinder, a central hole is formed in the middle of one end face, close to the roll shaft, of the bearing seat, an oil filling nozzle is arranged on the other end face, far away from the roll shaft, of the bearing seat, a containing cavity is formed in the side wall of the cylinder and communicated with the oil filling nozzle, and the radial size of the containing cavity is larger than that of the central hole and used for enabling a shaft neck of the roll shaft to penetrate out of the central hole into the containing cavity; the upper bearing seat and the lower bearing seat are distributed along the radial direction and can be detachably fixed with each other, and the upper bearing seat and the lower bearing seat are fixed on a base wallboard;

a seal ring embedded in the center hole for sealing a gap between the center hole and a journal of the roller shaft;

The bearing is arranged in the accommodating cavity, the bearing outer ring is supported on the side wall of the cylinder, and the bearing inner ring is sleeved outside the shaft neck of the roll shaft; a chute is arranged on one side of the edge of the outer ring of the bearing, which is close to the central hole; the two ends of the bearing are respectively provided with an axial gap for providing a moving space for the expansion and contraction of the roll shaft;

The taper sleeve is sleeved outside the shaft neck of the roll shaft and is positioned between the bearing inner ring and the shaft neck; the two ends of the taper sleeve extend outwards along the edge of the bearing inner ring respectively, and the dimension of the taper sleeve gradually increases along the direction close to the center hole; axial gaps are reserved at two ends of the taper sleeve respectively and used for providing a moving space for expansion and contraction of the roll shaft;

The fastening screw rod penetrates through the cylindrical side wall of the bearing seat and is embedded into the chute on the edge of the outer ring of the bearing so as to prevent the outer ring from rotating;

And the locking part is sleeved outside one end of the taper sleeve with smaller size and is used for fixing the taper sleeve on the shaft neck.

In some preferred embodiments, the locking portion includes a nut that is sleeved outside the smaller dimension end of the cone sleeve, and a retaining washer that is disposed between the nut and the bearing inner race and that is snapped onto the nut.

In some preferred embodiments, the bearing is a double row self-aligning ball bearing.

In some preferred embodiments, the bearing housing further comprises:

The positioning boss is cylindrical and is divided into an upper part and a lower part, the upper part and the lower part are respectively connected with one ends of the upper bearing seat and the lower bearing seat, which are far away from the roller way, and extend outwards along the axial direction of the bearing seat, in the radial direction, the outer diameter of the positioning boss is smaller than the outer diameter of the cylindrical side wall of the bearing seat, and the inner diameter of the positioning boss is smaller than the radial dimension of the accommodating cavity; the clamping position is formed on the outer surface of the bearing seat so as to be clamped and fixed on the base wallboard, and the axial gap of the outer ring of the bearing is limited in the bearing seat;

the end cover is arranged at the outer end of the positioning boss and is used for sealing the other end face of the bearing far away from the roll shaft; and the end cover is provided with the oil filling nozzle.

More preferably, the end cover is provided with a convex spigot which is clamped in the positioning boss and is used for sealing a gap between the positioning boss and the end cover.

In some preferred embodiments, a groove is arranged on the detachable fixing joint surface of the lower bearing seat, the groove extends along the axial direction of the bearing seat and penetrates through the whole joint surface, a rubber ring is filled in the groove, and the joint surfaces of the upper bearing seat and the lower bearing seat extend outwards respectively and are positioned and locked through a screw rod so as to realize the detachable fixing and the sealing of the joint surface.

More preferably, the cross-sectional area of the rubber ring is equal to the cross-sectional area of the groove, and the diameter of the rubber ring is higher than the depth of the groove.

In some preferred embodiments, two position slots are arranged in the cylindrical side wall of the bearing seat, the position slots are used for accommodating the bearing outer ring, and the two ends of the bearing outer ring are provided with axial gaps.

More preferably, a limiting protrusion is arranged between the two units slots, and the limiting protrusion is connected to the cylindrical side wall of the bearing seat.

In some preferred embodiments, the method of assembling the fixture comprises the steps of:

(1) Lifting the driven end of the roll shaft to the position above the center position of the hole of the base wallboard, then enabling the sealing ring, the taper sleeve and the bearing to sequentially enter from the center position of the hole of the base wallboard and be sleeved into the proper position of the roll shaft journal, and enabling the larger-size end of the taper sleeve to be inwards;

(2) Then the lower bearing seat is assembled on a base wallboard, a tightening screw rod penetrates through the cylindrical side wall of the lower bearing seat and continuously extends to 3-4 mm in the accommodating cavity, meanwhile, the outer ring chute of the bearing is aligned with the head of the tightening screw rod and embedded in the tightening screw rod, the roller shaft is dropped to enable the bearing to be arranged in the lower bearing seat, and meanwhile, the sealing ring is embedded in a part of central holes of the lower bearing seat;

(3) Then fixing one end of the smaller size of the taper sleeve on the shaft neck through the locking part; optionally filling the rubber ring into the groove of the joint surface of the lower bearing seat;

(4) And assembling the upper bearing seat, embedding the sealing ring into a part of the central hole of the upper bearing seat, locking the upper bearing seat and the lower bearing seat through the screw, and oiling from the oiling nozzle.

According to the invention, the fixing device with a specific structure is arranged at the driven end of a roller shaft of a roller in a wire air cooling system, in particular, the taper sleeve is arranged to be matched with the bearing, axial gaps are reserved at the two ends, the taper sleeve and the corresponding bearing are tightly matched with the shaft neck through the locking part, the bearing is prevented from rotating through the fastening screw rod, a telescopic space can be provided in the axial direction for expansion and contraction of the roller shaft, elastic telescopic allowance can be provided in the radial taper sleeve, fastening support can be carried out, the bearing inner ring, the taper sleeve and the shaft neck of the roller shaft can not rotate relatively, the bearing outer ring is prevented from rotating, and the cylindrical side walls of the shaft neck and the bearing seat are not worn any more; one end of the taper sleeve with a larger size is positioned on one side of the roll shaft which is easy to wear, so that the taper sleeve can be flexibly filled in time after the roll shaft is worn for a certain time after the roll shaft is used for a long time, the loose and falling-off of the set screw is prevented, and the longer running time of the roll shaft is ensured; meanwhile, the sealed bearing seat is matched and is filled with oil through the oil filling nozzle, so that damage to parts such as a bearing caused by external temperature and dust can be avoided, and the roller shaft can be guaranteed to stably and rapidly rotate without abrasion even under the condition of rapid process speed change of the roller shaft; the oiling can promote the long-time abrasion-free stable operation of the bearing, also can play a role in cooling, and further reduces the influence of temperature on the expansion and contraction of the roller shaft, thereby realizing that the roller shaft is not abraded for a long time; the roller shaft and the bearing seat inner cavities are effectively prevented from being worn, the service life of the roller shaft is prolonged, and the roller way rotary conveying precision is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the wire air cooling system of the present invention.

Fig. 2 is a schematic view of the structure of the bearing housing of the present invention.

Fig. 3 is a schematic view of an assembly structure of a bearing housing and a base wall plate according to the present invention.

Fig. 4 is an axial cross-sectional view of the fixture of the present invention.

Fig. 5 is a longitudinal sectional view of the bearing housing of the present invention.

FIG. 6 is a schematic illustration of an assembled configuration of bearing blocks, bearings and roller shafts without wear journals removed.

Description of the reference numerals

1. The heat-insulating wall, 2, the base wallboard, 3, the fixing device, 4, the roller way, 5 and the wire rod;

401. Roll shafts, 402, journals; 30. bearing seat, 301, lower bearing seat, 302, upper bearing seat, 303, end cover, 304, end cover fixing screw, 305, oil filler, 306, screw hole, 307, pin screw, 308, central hole, 309, tightening screw, 310, chute, 311, positioning boss, 312, position groove, 313, limit protrusion, 314, groove; 31. bearing, 32, taper sleeve, 33, locking portion.

Detailed Description

The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.

The invention provides a wire 5 air cooling system, as shown in fig. 1, which comprises a roller way 4 for conveying wires 5, a heat insulation wall 1 and a base wallboard 2, wherein the end part of a roller shaft 401 of the roller way 4 sequentially passes through the heat insulation wall 1 and the base wallboard 2 outwards, the air cooling system further comprises a fixing device 3, a driven end of the roller shaft 401 in the roller way 4 is rotatably arranged on the base wallboard 2 and positioned on the inner side of the base wallboard 2, and the fixing device 3 comprises: as shown in figures 2,3 and 4,

The bearing seat 30 is a sealed cylinder as a whole, a central hole 308 is formed in the middle of one end surface of the bearing seat, which is close to the roll shaft 401, an oil filling nozzle 305 is arranged on the other end surface, which is far away from the roll shaft 401, a containing cavity is formed in the inner part of the side wall of the cylinder, the containing cavity is communicated with the oil filling nozzle 305, the radial size of the containing cavity is larger than that of the central hole 308, and a shaft neck 402 of the roll shaft 401 penetrates from the central hole 308 into the containing cavity; the upper bearing seat 302 and the lower bearing seat 301 are distributed along the radial direction and are detachably fixed with each other, and the upper bearing seat 302 and the lower bearing seat 301 are fixed on the base wallboard 2;

a seal ring embedded in the central hole 308 for sealing a gap between the central hole 308 and the journal 402 of the roller shaft 401; it can be appreciated that a groove for embedding a sealing ring is formed in the central hole 308;

The bearing 31 is arranged in the accommodating cavity, the outer ring of the bearing 31 is supported on the cylindrical side wall, and the inner ring of the bearing 31 is sleeved outside the shaft neck 402 of the roller shaft 401; a chute 310 is arranged on one side of the outer ring edge of the bearing 31, which is close to the central hole 308; the two ends of the bearing 31 are respectively provided with an axial gap for providing a moving space for the expansion and contraction of the roller shaft 401;

the taper sleeve 32 is sleeved outside the shaft neck 402 of the roll shaft 401 and is positioned between the inner ring of the bearing 31 and the shaft neck 402; the two ends of the cone sleeve 32 extend outwards along the edge of the inner ring of the bearing 31, and the size of the cone sleeve 32 gradually increases along the direction approaching the central hole 308; axial gaps are reserved at two ends of the taper sleeve 32 respectively and are used for providing a moving space for expansion and contraction of the roll shaft 401;

a tightening screw 309 passing through a cylindrical sidewall of the bearing housing 30 and fitted into a chute 310 on an outer ring edge of the bearing 31 to prevent the outer ring from rotating; it will be appreciated that it only undergoes shear forces to prevent rotation of the outer race, it does not radially compress the outer race, otherwise it would deform the outer race, destroying radial play, reducing the service life of the bearing 31;

a locking portion 33, which is sleeved outside the smaller end of the cone sleeve 32, for fixing the cone sleeve 32 on the journal 402.

According to the fixing device 3 disclosed by the invention, the driven end of the roll shaft 401 in the roller way 4 is rotatably arranged on the base wallboard 2 and positioned on the inner side of the base wallboard 2, compared with the prior art that the roll shaft 401 is arranged in a hole of the base wallboard 2 or on the outer side of the hole, the fixing device can provide more fixed installation positions for different positions of the roll shaft 401, is detachable and is convenient to install.

In some preferred embodiments, as shown in fig. 6, two positioning slots 312 are provided in the cylindrical sidewall of the bearing housing 30, and the positioning slots 312 are used for accommodating the outer ring of the bearing 31, and the two ends of the outer ring of the bearing 31 are left with an axial gap. Under this preferred scheme, two units slots 312 can provide two installation positions for roller 401 for in the circumstances that the outer end of axle journal 402 of roller 401 has worn out after long-time use, adopt one of them units slot 312 to fix the inboard of axle journal 402, further improve operating time, save the cost. Specifically, since the width of the supporting surface of the driven end journal 402 of the roll shaft 401 is about twice that of the inner ring of the bearing 31, conditions are provided for the displacement installation of the bearing 31, when the supporting surface of the outer side of the driven end journal 402 of the roll shaft 401 is worn, the bearing 31 moves to the supporting surface of the inner side of the journal 402 for installation, the bearing seat 30 is correspondingly widened, the double-shaft bearing seat 30 is realized, the problem of difficult roller replacement is solved, and the cost of spare parts of the roller is greatly saved.

More preferably, a limiting protrusion 313 is disposed between the two units slots 312, and the limiting protrusion 313 is connected to the cylindrical sidewall of the bearing housing 30.

The sealing ring (preferably an O-shaped sealing rubber ring) can prevent oil leakage between the central hole 308 and the shaft neck 402 of the roll shaft 401.

It should be appreciated that the nozzle 305 can be open when refueling is desired, and that oil can enter the receiving chamber and can be closed when refueling is not desired, without filling or discharging oil.

In some preferred embodiments, as shown in fig. 4, the locking portion 33 includes a nut that is sleeved outside the smaller-sized end of the cone sleeve 32, and a retaining washer that is disposed between the nut and the inner ring of the bearing 31 and is engaged with the nut.

In some preferred embodiments, as shown in fig. 4, the bearing 31 is a double row self-aligning ball bearing. Under the preferred scheme, the double-row aligning ball bearings can compensate the misalignment degree and the shaft deflection error of the bearing seats 30 on the driving end and the driven end of the roll shaft 401, ensure the stable running of the roll shaft 401 and further reduce the possibility of abrasion of the roll shaft 401.

The bearing seat 30 may be of an integral structure along its axial direction, in which case the ends of the upper bearing seat 302 and the lower bearing seat 301 remote from the roller way extend outwards and form a closed outer end; the upper bearing seat 302 and the lower bearing seat 301 can be of split structure, and in this case, the ends far away from the roller way form a closed outer end by installing other components. In some preferred embodiments, the bearing housing 30 adopts a split structure, as shown in fig. 1,4 and 5, and further includes:

The positioning boss 311 is cylindrical and divided into an upper part and a lower part, the upper part and the lower part are respectively connected to one ends of the upper bearing seat 302 and the lower bearing seat 301 far away from the roller way 4 and extend outwards along the axial direction of the bearing seat 30, the outer diameter of the positioning boss is smaller than the outer diameter of the cylindrical side wall of the bearing seat 30 in the radial direction, and the inner diameter of the positioning boss is smaller than the radial dimension of the accommodating cavity; the clamping position is formed on the outer surface of the bearing seat 30 to be clamped and fixed on the base wallboard 2, and the axial clearance of the outer ring of the bearing 31 is limited in the bearing seat 30;

An end cover 303, which is installed at the outer end of the positioning boss 311, and is used for sealing the other end surface of the bearing seat 30 away from the roller shaft 401; and the end cover 303 is provided with the oil filler nozzle 305. Under the preferred scheme, the device is convenient to install and detach.

Preferably, the end cover 303 is fixed to the outer end of the positioning boss 311 by an end cover 303 fixing screw 304.

More preferably, as shown in fig. 4, the end cover 303 is provided with a male spigot, which is clamped in the positioning boss 311, so as to seal a gap between the positioning boss 311 and the end cover 303. Under the preferred scheme, the convex spigot is embedded into the positioning boss 311 and can play the role of sealing oil.

In some preferred embodiments, as shown in fig. 5, a groove 314 is disposed on the detachable fixing joint surface of the lower bearing seat 301, the groove 314 extends axially along the bearing seat 30 and penetrates through the whole joint surface, a rubber ring is filled in the groove 314, and the joint surfaces of the upper bearing seat 302 and the lower bearing seat 301 extend outwards respectively and are positioned and locked by a screw (preferably a pin screw 307) so as to realize the detachable fixing and seal the joint surface. It can be understood that two reaming holes are formed on the joint surface of the upper bearing seat 302 and the lower bearing seat 301, and the screw rod passes through the reaming holes to fasten and fix the upper bearing seat 302 and the lower bearing seat 301, so that the positioning accuracy is high.

More preferably, the rubber ring cross-sectional area is equal to the groove 314 cross-sectional area and the rubber ring diameter is higher (preferably slightly higher) than the groove 314 depth.

Preferably, screw holes 306 are respectively formed on the upper bearing seat 302 and the lower bearing seat 301, and the bearing seat 30 is fixed on the base wallboard 2 by penetrating screws into the base wallboard 2 and the screw holes 306 in sequence.

In some preferred embodiments, the method of assembling the fixture 3 comprises the steps of:

(1) Lifting the driven end of the roll shaft 401 to the position above the hole center position of the base wallboard 2, then sequentially entering and sleeving the sealing ring, the taper sleeve 32 and the bearing 31 into the proper position of the roll shaft 401 journal from the hole center position of the base wallboard 2, and inwards arranging one end of the larger size of the taper sleeve 32;

(2) The lower bearing seat 301 is assembled on the base wallboard 2, the tightening screw 309 penetrates through the cylindrical side wall of the lower bearing seat 301 and continues to extend to the accommodating cavity for 3-4 mm, and meanwhile, the outer ring chute 310 of the bearing 31 is aligned with the head of the tightening screw 309 and the tightening screw 309 is embedded; the roll shaft 401 is dropped to enable the bearing 31 to be arranged in the lower bearing seat 301, and meanwhile, the sealing ring is embedded into a part of central holes of the lower bearing seat 301;

(3) The smaller dimension end of the cone sleeve 32 is then secured to the journal 402 by the locking portion 33; and optionally filling the rubber ring into the lower bearing housing 301 interface groove 314;

(4) The upper bearing block 302 is assembled while the seal ring is inserted into a part of the center hole of the upper bearing block 302, the upper bearing block 302 and the lower bearing block 301 are locked by the screw, and the oil is supplied from the oil supply nozzle 305.

In the present invention, it should be appreciated that the diameter of the outer race of bearing 31 is smaller than the diameter of the hole in base wall plate 2 so that the bushing can be threaded through the hole in base wall plate 2 and over journal 402.

In the present invention, when the bearing housing 30 is of a split structure, it is preferable that the positioning boss 311 and the end cover 303 are further assembled in step (4). The positioning boss 311 is inserted into the hole of the base wallboard 2 and fixed by a screw in the screw hole.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.

Claims

1. The utility model provides a wire rod forced air cooling system, is including roll table, heat preservation wall and the base wallboard that is used for carrying the wire rod, the roller tip of roll table outwards passes in proper order the heat preservation wall with the base wallboard, a serial communication port, still include fixing device, it is with the rotatable installation of driven end of roller in the roll table be in on the base wallboard and be located the inboard of base wallboard, just fixing device includes:

2. The wire air cooling system according to claim 1, wherein the locking portion includes a nut that is sleeved outside the smaller sized end of the cone sleeve and a retaining washer that is disposed between the nut and the bearing inner race and is clamped on the nut.

3. The wire air cooling system of claim 1, wherein the bearing is a double row self-aligning ball bearing.

4. The wire air cooling system of claim 1, wherein the bearing housing further comprises:

5. The wire air cooling system according to claim 4, wherein the end cover is provided with a male tang that is snapped into the positioning boss for sealing a gap between the positioning boss and the end cover.

6. The wire air cooling system according to claim 1, wherein a groove is arranged on the detachable fixing joint surface of the lower bearing seat, the groove extends along the axial direction of the bearing seat and penetrates through the whole joint surface, a rubber ring is filled in the groove, and the joint surfaces of the upper bearing seat and the lower bearing seat extend outwards respectively and are positioned and locked through a screw rod so as to realize the detachable fixing and the sealing of the joint surface.

7. The wire air cooling system of claim 6, wherein the rubber ring cross-sectional area is equal to the groove cross-sectional area and the rubber ring diameter is higher than the groove depth.

8. The wire air cooling system according to claim 1, wherein two position grooves are formed in the cylindrical side wall of the bearing seat, the position grooves are used for accommodating the bearing outer ring, and an axial gap is reserved between two ends of the bearing outer ring.

9. The wire air cooling system according to claim 8, wherein a limiting protrusion is arranged between the two units slots, and the limiting protrusion is connected to the cylindrical side wall of the bearing seat.

10. The wire air cooling system according to any one of claims 1 to 9, wherein the method of assembling the fixture comprises the steps of: