CN216895011U

CN216895011U - Water pump shaft and fan shaft connecting structure

Info

Publication number: CN216895011U
Application number: CN202220477586.0U
Authority: CN
Inventors: 梁振杰
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-05
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a water pump shaft and fan shaft connecting structure, which belongs to the field of fan shaft connecting structures and solves the problem that the connection failure is easily caused by large vibration in the prior work. The shaft connecting structure of the water pump shaft and the fan shaft can effectively reduce vibration and improve the reliability of the whole transmission part.

Description

Water pump shaft and fan shaft connecting structure

Technical Field

The utility model relates to a fan shaft connecting structure, in particular to a water pump shaft and fan shaft connecting structure.

Background

At present, the power source of a fan used for cooling an automobile (or a large tractor) is generally taken from the end of a water pump shaft of an engine or the end of an independent belt wheel, and most of connection modes adopt the rotation speed transmission of connecting a fan component by the water pump belt wheel or the independent belt wheel or connecting the fan component by a fan shaft flange and the like. The mode structure is lower in cost, but is limited by the structure sometimes, when the fan shaft is connected with the fan assembly through the flange, the suspension distance of the fan assembly is too long, the vibration is large during working, and the connection failure sometimes occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art, and aims to provide a water pump shaft and fan shaft connecting structure which can effectively reduce vibration and improve the reliability of the whole transmission part.

The technical scheme of the utility model is as follows: the utility model provides a water pump axle and fan shaft connection structure, includes water pump coupling bearing and fan axle, still includes water pump seat and fan axle sleeve, water pump coupling bearing install in the water pump seat, water pump coupling bearing one end be connected with the water pump belt pulley, the inside drive flange cover that is equipped with of water pump belt pulley one end, drive flange cover and water pump belt pulley between inlay and be equipped with the damping rubber piece, drive flange cover one end be connected with detachable flange end cover, flange end cover one end and fan hub connection, fan axle sleeve be connected with the water pump seat, the fan axle pass through bearing assembly and install in fan axle sleeve.

As a further improvement, a positioning seat is arranged at the center inside the water pump seat, the water pump shaft connecting bearing is installed in the positioning seat, a containing cavity for containing a water pump belt pulley is formed in the water pump seat on the periphery of the positioning seat, and a U-shaped avoiding opening is formed in the position, corresponding to the position of the water pump belt pulley, of the outer wall of the water pump seat.

Furthermore, a first positioning cylinder is arranged at one end, close to the positioning seat, of the water pump belt pulley, a mounting hole is formed in the center of the first positioning cylinder, the water pump shaft connecting bearing is mounted in the mounting hole, and the first positioning cylinder is inserted into a jack formed in the positioning seat.

Furthermore, a plurality of pin holes are uniformly formed in the driving flange sleeve, a plurality of pins are uniformly arranged on the flange end cover, and the pins are movably inserted into the pin holes one by one.

Furthermore, the driving flange sleeve and the water pump belt pulley are of a split structure which is not in contact with each other, the outer wall of the vibration reduction rubber block is attached to the inner wall of the sinking groove formed in the water pump belt pulley, and the vibration reduction rubber block is wrapped on the left end face and the circumferential face of the driving flange sleeve.

Furthermore, the left end face of the driving flange sleeve is provided with a plurality of uniformly arranged cylindrical shafts, and each pin hole is correspondingly formed in each cylindrical shaft.

Furthermore, one end of the fan shaft is provided with a second positioning cylinder, the second positioning cylinder is inserted into a jack formed in the center of the flange end cover, and the flange end cover is connected with the fan shaft through a first fastening bolt.

Furthermore, the bearing assembly comprises two rolling bearings, the two rolling bearings are arranged in the fan shaft sleeve, the fan shaft is arranged on the inner ring of the two rolling bearings, a bearing spacer sleeve is arranged between the outer rings of the two rolling bearings, and a limiting structure is arranged between the fan shaft sleeve and the fan shaft on two sides of the two rolling bearings.

Furthermore, the limiting structure comprises two elastic check rings for two holes and one elastic check ring for a shaft, the two elastic check rings for the holes are respectively clamped on the inner walls of the fan shaft sleeves on the other sides of the two rolling bearings, the elastic check ring for the shaft is clamped on the outer wall of the fan shaft on the other side of one rolling bearing, and the outer wall of the fan shaft on the other side of the rolling bearing is provided with a thrust step surface.

Furthermore, one side of the water pump seat, which is in butt joint with the shaft sleeve of the fan shaft, is provided with a connecting flange, and the two connecting flanges are connected through a second fastening bolt.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

1. according to the water pump shaft and fan shaft connecting structure, the water pump belt pulley is arranged in the water pump seat and connected with the water pump shaft connecting bearing, the driving flange sleeve and the flange end cover are used for connecting with the fan shaft, the vibration damping rubber block is embedded between the driving flange sleeve and the water pump belt pulley, the belt drives the water pump belt pulley to rotate in the working process, the torque is transmitted to the driving flange sleeve from the water pump belt pulley through the vibration damping rubber block, and the torque on the driving flange sleeve is transmitted to the fan shaft through the flange end cover, so that the fan shaft is driven to rotate, the vibration can be effectively reduced, and the reliability of the whole transmission part is improved.

2. The water pump shaft and fan shaft connecting structure adopts the fan shaft sleeve to be connected with the water pump seat, and a plurality of parts of the water pump belt pulley, the driving flange sleeve, the flange end cover and the fan shaft are arranged in the water pump seat and the fan shaft sleeve to play a role in protecting a transmission part, and meanwhile, a bearing assembly is additionally arranged between the fan shaft and the fan shaft sleeve, so that the influence of bending moment on the water pump shaft connecting bearing is reduced, and the reliability of the whole transmission part is further improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic perspective view of a water pump seat according to the present invention;

FIG. 4 is an enlarged schematic view of the cross-sectional structure of the water pump pulley and the driving flange sleeve;

FIG. 5 is an enlarged schematic perspective view of a drive flange sleeve according to the present invention;

fig. 6 is a schematic cross-sectional view of the shaft sleeve of the fan shaft and the fan shaft of the present invention.

Wherein: 1-water pump shaft connecting bearing, 2-fan shaft, 3-water pump base, 4-fan shaft sleeve, 5-water pump belt pulley, 6-driving flange sleeve, 7-vibration damping rubber block, 8-flange end cover, 9-positioning base, 10-containing cavity, 11-U-shaped avoiding opening, 12-first positioning cylinder, 13-pin hole, 14-pin, 15-cylinder shaft, 16-second positioning cylinder, 17-first fastening bolt, 18-rolling bearing, 19-bearing spacer bush, 20-hole elastic retainer ring, 21-shaft elastic retainer ring, 22-thrust step surface, 23-connecting flange, 24-second fastening bolt and 25-impeller.

Detailed Description

The utility model will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-6, the utility model relates to a water pump shaft and fan shaft connecting structure, comprising a water pump shaft connecting bearing 1 and a fan shaft 2, and further comprising a water pump base 3 and a fan shaft sleeve 4, wherein the water pump shaft connecting bearing 1 is installed in the water pump base 3, one end of the water pump shaft connecting bearing 1 is connected with a water pump belt pulley 5, one end of the water pump belt pulley 5 is internally provided with a driving flange sleeve 6, a damping rubber block 7 is embedded between the driving flange sleeve 6 and the water pump belt pulley 5, one end of the driving flange sleeve 6 is connected with a detachable flange end cover 8, which is convenient for disassembly and maintenance, one end of the flange end cover 8 is connected with the fan shaft 2 to realize the transmission of the fan shaft 2, the fan shaft sleeve 4 is connected with the water pump base 3, the fan shaft 2 is installed in the fan shaft sleeve 4 through a bearing assembly, and the other end of the fan shaft 2 extends out of the fan shaft sleeve 4, and is provided with a flange at the end position, a positioning boss is arranged on one side of the flange, so that the positioning and fastening during fan assembly are facilitated.

According to the water pump shaft and fan shaft connecting structure, the water pump belt pulley 5 is arranged in the water pump seat 3 and connected with the water pump shaft connecting bearing 1, the driving flange sleeve 6 and the flange end cover 8 are connected with the fan shaft 2, the vibration damping rubber block 7 is embedded between the driving flange sleeve 6 and the water pump belt pulley 5, in the working process, the belt drives the water pump belt pulley 5 to rotate, the torque is transmitted to the driving flange sleeve 6 from the water pump belt pulley 5 through the vibration damping rubber block 7, the torque on the driving flange sleeve 6 is transmitted to the fan shaft 2 through the flange end cover 8, the fan shaft 2 is driven to rotate, vibration can be effectively reduced, and the reliability of the whole transmission part is improved.

Meanwhile, the connecting structure adopts the fan shaft sleeve 4 to be connected with the water pump base 3, a plurality of parts of the water pump belt pulley 5, the driving flange sleeve 6, the flange end cover 8 and the fan shaft 2 are arranged in the water pump base 3 and the fan shaft sleeve 4, the effect of protecting a transmission part is achieved, meanwhile, a bearing assembly is additionally arranged between the fan shaft 2 and the fan shaft sleeve 4, the influence of bending moment on the water pump shaft connecting bearing is reduced, and the reliability of the whole transmission part is further improved.

Preferably, a positioning seat 9 is arranged at the center inside the water pump seat 3, the positioning seat 9 and the water pump seat 3 are coaxially arranged, wherein, the water pump shaft connecting bearing 1 is arranged in the positioning seat 9, concretely, the center of the positioning seat 9 is provided with a hole which is coaxially arranged with the positioning seat, the water pump shaft connecting bearing 1 is positioned in the hole, the water pump shaft connecting bearing 1 is limited in the hole by using an elastic retainer ring to prevent the water pump shaft connecting bearing 1 from moving axially, two ends of the water pump shaft connecting bearing 1 extend to two sides of the positioning seat 9, one end of the water pump shaft connecting bearing 1 is connected with the impeller 25, the other end of the water pump shaft connecting bearing is connected with the water pump belt pulley 5, a containing cavity 10 for containing the water pump belt pulley 5 is arranged in the water pump seat 3 at the periphery of the positioning seat 9, the water pump belt pulley 5 can be wrapped in the water pump seat 3, the position of the outer wall of the water pump seat 3 corresponding to the position of the water pump belt pulley 5 is provided with a U-shaped avoiding opening 11, so that a belt can conveniently pass through the water pump belt pulley 5. Further, a reinforcing rib is arranged between the positioning seat 9 and the inner wall of the water pump seat 3, and the structural strength of the water pump seat 3 is further improved. One side of keeping away from water pump belt pulley 5 on water pump seat 3 is provided with the flange, makes things convenient for water pump seat 3's installation, and also sets up the strengthening rib between the outer wall of this flange and water pump seat 3, further improves water pump seat 3's structural strength.

Preferably, one end of the water pump belt pulley 5 close to the positioning seat 9 is provided with a first positioning cylinder 12, the water pump belt pulley 5 is in a U-shaped structure, the first positioning cylinder 12 is located in a U-shaped groove of the water pump belt pulley 5, a mounting hole is formed in the center of the first positioning cylinder 12, the water pump shaft connecting bearing 1 is installed in the mounting hole, the first positioning cylinder 12 is inserted into a jack formed in the positioning seat 9, and the water pump belt pulley 5 is conveniently and quickly positioned and installed on the positioning seat 9.

Preferably, a plurality of pin holes 13 which are uniformly distributed are formed in the driving flange sleeve 6, a plurality of pins 14 which are uniformly distributed are arranged on the flange end cover 8, the pins 14 are movably inserted into the pin holes 13 one by one, force transmission is achieved by means of matching of the pins 14 and the pin holes 13, detachable connection is achieved, and disassembly, assembly and maintenance are facilitated. Specifically, the pin 14 is a T-shaped pin, the largest end of the T-shaped pin is in interference fit with a hole formed in the outer edge of the flange end cover 8, and the smallest end of the T-shaped pin is in clearance fit with the pin hole 13. Further, be contactless split type structure each other between drive flange cover 6 and the water pump belt pulley 5, and the heavy inslot inner wall that has seted up in water pump belt pulley 5 is laminated to the outer wall of damping rubber block 7, damping rubber block 7 parcel is on the left end face and the periphery of drive flange cover 6, during the preparation, water pump belt pulley 5, drive flange cover 6 and damping rubber block 7 are for vulcanizing together and form, make the transmission of power only rely on damping rubber block 7 to transmit drive flange cover 6 on, the damping effect is more obvious. Further, a plurality of cylindrical shafts 15 which are uniformly arranged are arranged on the left end face of the driving flange sleeve 6, and each pin hole 13 is correspondingly formed in each cylindrical shaft 15, so that stressed pins 14 are inserted into different positions of the vibration reduction rubber block 7, the stress is more uniform and balanced, and the stability and the reliability of force transmission are further improved.

Preferably, one end at fan axle 2 is equipped with second location cylinder 16, and second location cylinder 16 pegs graft in the jack that flange end cover 8 center was seted up, and flange end cover 8 is connected with fan axle 2 through first fastening bolt 17, conveniently fixes a position installation fan axle 2 and flange end cover 8 fast to keep away from fan axle 2's one side on flange end cover 8 and still seted up and dodge the groove, prevent that first fastening bolt 17 from interfering with drive flange cover 6.

Preferably, the bearing assembly comprises two rolling bearings 18, the two rolling bearings 18 are installed in the fan shaft sleeve 4, the fan shaft 2 is installed at the inner ring of the two rolling bearings 18, a bearing spacer 19 is arranged between the outer rings of the two rolling bearings 18, and a limiting structure is further arranged between the fan shaft sleeve 4 and the fan shaft 2 on two sides of the two rolling bearings 18 to prevent the two rolling bearings 18 from generating axial displacement. Specifically, the limiting structure comprises two elastic check rings 20 for two holes and one elastic check ring 21 for a shaft, wherein the two elastic check rings 20 for two holes are respectively clamped on the inner walls of the fan shaft sleeves 4 on the other sides of the two rolling bearings 18, the elastic check ring 21 for the shaft is clamped on the outer wall of the fan shaft 2 on the other side of one rolling bearing 18, and the outer wall of the fan shaft 2 on the other side of the other rolling bearing 18 is provided with a thrust step surface 22.

Preferably, the water pump base 3 and the fan shaft sleeve 4 are provided with a connecting flange 23 on the opposite side, and the two connecting flanges 23 are connected through a second fastening bolt 24, so that the disassembly, assembly and maintenance are facilitated.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the utility model, which will not affect the effect of the utility model and the practicability of the patent.

Claims

1. A water pump shaft and fan shaft connecting structure comprises a water pump shaft connecting bearing (1) and a fan shaft (2), it is characterized by also comprising a water pump seat (3) and a fan shaft sleeve (4), wherein the water pump shaft connecting bearing (1) is arranged in the water pump seat (3), one end of the water pump shaft connecting bearing (1) is connected with a water pump belt pulley (5), a driving flange sleeve (6) is arranged inside one end of the water pump belt pulley (5), a vibration damping rubber block (7) is embedded between the driving flange sleeve (6) and the water pump belt pulley (5), one end of the driving flange sleeve (6) is connected with a detachable flange end cover (8), one end of the flange end cover (8) is connected with the fan shaft (2), the fan shaft sleeve (4) is connected with the water pump base (3), the fan shaft (2) is arranged in the fan shaft sleeve (4) through a bearing assembly.

2. The water pump shaft and fan shaft connecting structure according to claim 1, wherein a positioning seat (9) is arranged at the center of the inside of the water pump seat (3), the water pump shaft connecting bearing (1) is installed in the positioning seat (9), a containing cavity (10) for containing the water pump belt pulley (5) is formed in the water pump seat (3) at the periphery of the positioning seat (9), and a U-shaped avoiding opening (11) is formed at a position corresponding to the position of the water pump belt pulley (5) on the outer wall of the water pump seat (3).

3. The water pump shaft and fan shaft connecting structure according to claim 2, wherein a first positioning cylinder (12) is disposed at one end of the water pump pulley (5) close to the positioning seat (9), a mounting hole is formed in the center of the first positioning cylinder (12), the water pump shaft connecting bearing (1) is mounted in the mounting hole, and the first positioning cylinder (12) is inserted into a socket formed in the positioning seat (9).

4. The water pump shaft and fan shaft connecting structure according to claim 1, wherein a plurality of pin holes (13) are uniformly arranged on the driving flange sleeve (6), a plurality of pins (14) are uniformly arranged on the flange end cover (8), and the pins (14) are movably inserted into the pin holes (13) one by one.

5. The water pump shaft and fan shaft connecting structure according to claim 4, wherein the driving flange sleeve (6) and the water pump pulley (5) are of a split structure which is not in contact with each other, the outer wall of the vibration damping rubber block (7) is attached to the inner wall of a sunken groove formed in the water pump pulley (5), and the vibration damping rubber block (7) is wrapped on the left end face and the circumferential face of the driving flange sleeve (6).

6. A water pump shaft and fan shaft connecting structure according to claim 5, characterized in that the left end face of the driving flange sleeve (6) is provided with a plurality of uniformly arranged cylindrical shafts (15), and each pin hole (13) is correspondingly formed in each cylindrical shaft (15).

7. The water pump shaft and fan shaft connecting structure according to claim 1, wherein a second positioning cylinder (16) is arranged at one end of the fan shaft (2), the second positioning cylinder (16) is inserted into a jack formed in the center of the flange end cover (8), and the flange end cover (8) is connected with the fan shaft (2) through a first fastening bolt (17).

8. The water pump shaft and fan shaft connecting structure according to claim 1, wherein the bearing assembly comprises two rolling bearings (18), the two rolling bearings (18) are installed in the fan shaft sleeve (4), the fan shaft (2) is installed at the inner rings of the two rolling bearings (18), a bearing spacer (19) is arranged between the outer rings of the two rolling bearings (18), and a limiting structure is further arranged between the fan shaft sleeve (4) and the fan shaft (2) on two sides of the two rolling bearings (18).

9. The water pump shaft and fan shaft connecting structure according to claim 8, wherein the limiting structure comprises two hole circlips (20) and one shaft circlip (21), the two hole circlips (20) are respectively clamped on the inner walls of the fan shaft sleeve (4) on the other sides of the two rolling bearings (18), the shaft circlip (21) is clamped on the outer wall of the fan shaft (2) on the other side of one rolling bearing (18), and the outer wall of the fan shaft (2) on the other side of the other rolling bearing (18) is provided with a thrust step surface (22).

10. A water pump shaft and fan shaft connecting structure according to any one of claims 1-9, characterized in that a connecting flange (23) is arranged on each of the abutting surfaces of the water pump base (3) and the fan shaft sleeve (4), and the two connecting flanges (23) are connected through a second fastening bolt (24).