CN222010598U - Fan mounting structure, engine and engineering machinery - Google Patents

Abstract

The utility model provides a fan mounting structure, an engine and engineering machinery, wherein the fan mounting structure comprises: the base is provided with a first mounting hole; the shaft connecting bearing is arranged in the first mounting hole, and the shaft part of the shaft connecting bearing penetrates out of the first mounting hole; the mounting seat is connected to the end part of the shaft connecting bearing and is suitable for mounting the fan belt pulley; and the fastener is connected between the shaft part of the shaft-connected bearing and the mounting seat so as to fix the mounting seat on the shaft part of the shaft-connected bearing. When the transmission ratio of the fan is changed, only the fan belt pulley is detached from the mounting seat and the fan belt pulleys with different diameters are replaced, and the shaft bearing is not required to be detached from the base. Meanwhile, the mounting seat and the shaft part of the shaft connecting bearing are fixed through the fastener, so that the connection between the mounting seat and the shaft part is stable, and the risk of connection failure of the fan in the rotation process is eliminated.

Description

Fan mounting structure, engine and engineering machinery

Technical Field

The utility model relates to the technical field of engine heat dissipation equipment, in particular to a fan mounting structure, an engine and engineering machinery.

Background

The engine is usually provided with a fan which can play a role in heat dissipation and cooling of the engine. In construction machines, the engine is often operated under some environmentally harsh conditions, such as mines, worksite environments, and the like. The traditional bearing seat component can not meet the use requirement, so that a fan bracket is arranged in an engine of engineering machinery, a shaft connecting bearing is arranged in the fan bracket, a fan belt pulley is connected outside a central shaft of the shaft connecting bearing in an interference manner, and the fan is driven to rotate through a belt, so that the use requirement of the engine under severe working conditions is met. However, in the above-mentioned structure, the fan pulley and the mounting base are usually integrated, when the fan with different speed ratios needs to be replaced, the shaft-connected bearing needs to be integrally removed from the fan bracket, and then the fan pulley is removed from the shaft-connected bearing and replaced, so that the whole replacement process is complicated

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is to overcome the complex defect of the prior art that the shaft connecting bearing of the engine and the fan belt pulley are replaced, so as to provide a fan mounting structure, the engine and engineering machinery.

In order to solve the above problems, the present utility model provides a fan mounting structure, comprising: the base is provided with a first mounting hole; the shaft connecting bearing is arranged in the first mounting hole, and the shaft part of the shaft connecting bearing penetrates out of the first mounting hole; the mounting seat is connected to the end part of the shaft connecting bearing and is suitable for mounting the fan belt pulley; and the fastener is connected between the shaft part of the shaft-connected bearing and the mounting seat so as to fix the mounting seat on the shaft part of the shaft-connected bearing.

Optionally, the first mounting hole is a blind hole.

Optionally, a second mounting hole is formed in the surface, facing the base, of the mounting seat, and the shaft portion of the shaft-connection bearing penetrates through the second mounting hole.

Optionally, the end face of the shaft part of the shaft connecting bearing is provided with a first connecting hole, the mounting seat is provided with a second connecting hole, the fastener comprises a fastening bolt, and the fastening bolt penetrates through the second connecting hole and the first connecting hole.

Optionally, the mounting seat includes a barrel portion, and an end of the barrel portion facing the base is at least partially disposed through the first mounting hole.

Optionally, an annular convex edge is arranged on the side wall of the barrel part, an annular sealing groove is arranged on one of the surface of the base facing the mounting seat and the surface of the annular convex edge facing the base, an annular sealing protrusion is arranged on the other one, and the annular sealing protrusion is embedded into the annular sealing groove.

Optionally, the inner side wall of the first mounting hole is provided with an annular mounting groove, the fan mounting structure further comprises a check ring, the check ring is arranged in the annular mounting groove, and the check ring is stopped at the outer side of the outer ring of the shaft-connected bearing.

Optionally, a positioning step is arranged at the bottom of the first mounting hole, and the inner side of the outer ring of the shaft-connection bearing is abutted with the positioning step.

The utility model also provides an engine, which comprises the fan mounting structure.

The utility model also provides engineering machinery comprising the fan mounting structure or the engine.

The utility model has the following advantages:

By adopting the technical scheme of the utility model, the mounting seat is arranged at the end part of the shaft connecting bearing and is suitable for mounting the fan, so that when the fans with different speed ratios are replaced, the fan belt pulley is only required to be detached from the mounting seat and replaced, and the shaft connecting bearing is not required to be detached from the base. Meanwhile, the mounting seat and the shaft part of the shaft connecting bearing are fixed through the fastener, so that the connection between the mounting seat and the shaft part is stable, and the risk of connection failure of the fan in the rotation process is eliminated. Therefore, the technical scheme of the utility model solves the defects of complex replacement and connection failure between the shaft connecting bearing and the fan belt pulley of the engine in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic structural view of an engine mounting structure of the present utility model;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

Fig. 3 shows an enlarged schematic view at B in fig. 1.

Reference numerals illustrate:

10. A base; 11. a first mounting hole; 12. an annular mounting groove; 20. a shaft is connected with a bearing; 21. a shaft portion; 22. a first connection hole; 30. a mounting base; 31. a second mounting hole; 32. a second connection hole; 33. a cylinder portion; 34. an annular flange; 40. a fastener; 50. an annular seal groove; 60. an annular sealing protrusion; 70. and (5) a retainer ring.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 3, an embodiment of a fan mounting structure according to the present application includes a base 10, a shaft bearing 20, a mount 30, and a fastener 40. Wherein the base 10 is provided with a first mounting hole 11. The shaft-coupling bearing 20 is disposed in the first mounting hole 11, and the shaft portion 21 of the shaft-coupling bearing 20 passes through the first mounting hole 11. A mount 30 is attached to an end of the shaft portion of the shaft bearing 20, the mount 30 being adapted to mount a fan. The fastener 40 is connected between the shaft portion 21 of the journal bearing 20 and the mount 30 to fix the mount 30 to the shaft portion 21 of the journal bearing 20.

By utilizing the technical scheme of the embodiment, the mounting seat 30 is arranged at the end part of the shaft-connected bearing 20, and the mounting seat 30 is suitable for mounting the fan, so that when the fans with different speed ratios are replaced, the fans are only required to be detached from the mounting seat 30 and replaced, and the shaft-connected bearing is not required to be detached from the base. Meanwhile, the mounting seat 30 and the shaft part 21 of the shaft connecting bearing 20 are fixed through the fastener 40, so that the connection between the mounting seat and the shaft connecting bearing is stable, and the risk of connection failure of the fan in the rotating process is eliminated. Therefore, the technical scheme of the embodiment solves the defects that the replacement between the shaft connecting bearing and the fan belt pulley of the engine in the prior art is complex, and the connection is invalid.

As shown in fig. 1, a base 10 is used for supporting a fan, a first mounting hole 11 is provided on an end surface of the base 10, and the first mounting hole 11 is a circular hole.

Further, the shaft-connected bearing 20 refers to an integrated part with a rotating shaft and bearing functions, the shaft-connected bearing 20 mainly comprises a shaft portion 21, an outer ring and rollers, the outer ring is sleeved outside the shaft portion 21, the rollers are arranged between the outer ring and the shaft portion 21, and the rollers can be spherical rollers or cylindrical rollers. When assembled, the outer race is interference fit within the first mounting hole 11, thus enabling the shaft portion 21 to rotate relative to the base 10.

As shown in fig. 1, a mount 30 is provided at an end of the shaft portion 21, the mount 30 being adapted to mount a fan pulley. Further, the mounting base 30 and the fan pulley can be detachably connected by bolts, buckles and other structures.

When the fan with different speed ratios needs to be replaced, the fan pulley is only required to be detached from the shaft part 21 and replaced, and the shaft connecting bearing 20 does not need to be detached, so that the maintenance difficulty is reduced.

As shown in fig. 1, the mount 30 is attached to the end position of the shaft portion 21 by a fastener 40 so as to be tightly coupled therebetween. Preventing the mount 30 from being released from the shaft portion 21 due to vibration during rotation of the fan.

When the mounting seat 30 needs to be replaced, the fastener 40 is removed, and after the new mounting seat 30 is replaced, the fastener 40 is mounted.

As shown in fig. 1, in the technical solution of the present embodiment, the first mounting hole 11 is a blind hole. That is, the first mounting hole 11 has a bottom wall, and is described in the direction shown in fig. 1, that is, the first mounting hole does not penetrate the left end surface of the base 10. Therefore, even if the external dust and foreign matter enters the first mounting hole 11, the dust and foreign matter does not enter the inside of the equipment through the first mounting hole 11, so that a dust cover, a dust screen and the like are not required to be arranged on the left end face of the base 10, and the structure of the base 10 is simplified.

As shown in fig. 1 and 2, in the technical solution of the present embodiment, a second mounting hole 31 is provided on a surface of the mounting base 30 facing the base 10, and the shaft portion 21 of the shaft-connected bearing 20 is inserted into the second mounting hole 31.

Specifically, the second mounting hole 31 is a circular hole, and the inner diameter of the second mounting hole 31 is fitted with the outer diameter of the shaft portion 21. The end of the shaft portion 21 can be inserted into the second mounting hole 31 so that the shaft portion 21 is more tightly fitted with the mount 30.

As shown in fig. 1 and 2, in the technical solution of the present embodiment, a first connecting hole 22 is provided on an end surface of a shaft portion 21 of a shaft bearing 20, a second connecting hole 32 is provided on a mounting seat 30, and a fastener 40 includes a fastening bolt passing through the second connecting hole 32 and the first connecting hole 22.

Specifically, a first connection hole 22 is provided at the center of the shaft portion 21, and the first connection hole 22 is optionally a screw hole. The second connection hole 32 is provided on the right end surface of the mounting seat 30 in the direction shown in fig. 1, and the second connection hole 32 is a through hole, that is, the second connection hole 32 communicates with the second mounting hole 31, and the inner diameter of the second connection hole 32 is larger than the outer diameter of the shank of the fastening bolt.

Further, when the shaft portion 21 is pierced in the second mounting hole 31, the first connection hole 22 and the second connection hole 32 are coaxially disposed. The shaft portion of the fastening bolt passes through the second coupling hole 32 first, and then the fastening bolt is screwed into the first coupling hole 22, thereby firmly fixing the mount pad 30 to the shaft portion 21.

Further, when the mount 30 needs to be replaced, the fastening bolts are loosened and taken out from the first and second connection holes 22 and 32.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, the mounting base 30 includes a cylindrical portion 33, and an end portion of the cylindrical portion 33 facing the base 10 is at least partially inserted into the first mounting hole 11.

Specifically, the cylindrical portion 33 includes a bottom wall and an annular side wall, so that the space within the cylindrical portion 33 encloses the second mounting hole 31 described above. The second connecting hole 32 is provided at a middle position of the bottom wall of the cylindrical portion 33.

As can be seen from fig. 3, the annular side wall of the barrel 33 has an outer diameter slightly smaller than the inner diameter of the first mounting hole 11 described above, so that the end of the barrel 33 can be inserted into the first mounting hole 11 after the mount 30 is fixed to the end of the shaft portion 21. That is, there is a partial overlap between the end of the cylindrical portion 33 and the inner wall of the first mounting hole 11, and in this overlap, there is a gap between the outer side wall of the cylindrical portion 33 and the inner side wall of the first mounting hole 11, which gap is a part of the labyrinth seal structure.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, an annular flange 34 is provided on the side wall of the barrel 33. One of the surface of the base 10 facing the mount 30 and the surface of the annular flange 34 facing the base 10 is provided with an annular seal groove 50, and the other is provided with an annular seal projection 60, and the annular seal projection 60 is embedded in the annular seal groove 50.

Specifically, the annular flange 34 is provided on the outer side wall of the annular side wall of the barrel 33. The annular flange 34 can increase the mounting area of the mount 30, thereby facilitating the connection between the mount 30 and the fan pulley.

Further, as can be seen from fig. 1 and 3 and illustrated in the orientation shown in fig. 1, the outer diameter of the annular sidewall of the barrel 33 is different along the left and right sides of the annular flange 34. Specifically, the outer diameter of the left barrel portion 33 of the annular flange 34 is larger than the outer diameter of the right barrel portion 33 in fig. 1. After the mount 30 is fixed to the end of the shaft portion 21, the end of the cylindrical portion 33 at the right end of the annular flange 34 may be inserted into the first mounting hole 11.

Further, as shown in fig. 1 and 3, after the mount 30 is fixed to the end of the shaft portion 21, the end surface of the annular flange 34 is close to the end surface of the base 10. An annular sealing protrusion 60 is provided on the surface of the base 10 facing the annular flange 34, an annular sealing groove 50 is provided on the surface of the annular flange 34 facing the base 10, and the annular sealing protrusion 60 is embedded into the annular sealing groove 50. As can be seen from fig. 3, the annular seal groove 50 and the annular seal projection 60 have a gap therebetween, which forms a labyrinth seal structure together with the gap between the base 10 and the annular flange 34, and the gap between the inner wall of the first mounting hole 11 and the end of the barrel portion 33 described above.

Through the labyrinth seal structure, external dust and foreign matter are not easy to enter into the first mounting hole 11, so that the fan mounting structure of the present embodiment can satisfy a severe working environment.

Alternatively, the centers of the annular seal groove 50 and the annular seal projection 60 coincide with the axis of the shaft portion 21, so that the annular seal groove 50 and the annular seal projection 60 do not interfere during rotation of the shaft portion 21.

In some embodiments, not shown, the positioning of the annular seal groove 50 and the annular seal projection 60 may also be reversed, i.e., the annular seal groove 50 is disposed on the surface of the base 10 facing the annular flange 34, and the annular seal projection 60 is disposed on the surface of the annular flange 34 facing the base 10.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, the inner side wall of the first mounting hole 11 is provided with an annular mounting groove 12, the fan mounting structure further includes a retainer ring 70, the retainer ring 70 is disposed in the annular mounting groove 12, and the retainer ring 70 is stopped at the outer side of the outer ring of the shaft-coupling bearing 20.

Specifically, after the shaft bearing 20 is mounted in the first mounting hole 11, the retainer ring 70 is fitted in the annular mounting groove 12, and the retainer ring 70 can be stopped at the end face shoulder position of the outer race of the shaft bearing 20, thereby fixing the axial position of the retainer ring 70 in the first mounting hole 11.

As shown in fig. 1, in the technical solution of the present embodiment, the base 10 is cylindrical, and forms the first mounting hole 11, and the wall thickness of the base 10 gradually increases in a direction away from the mounting seat 30.

As can be seen from fig. 1, the base 10 has a generally cylindrical structure as a whole, and is illustrated in the orientation shown in fig. 1, the left end of the base 10 is a closed end, and the left end of the base is provided with a connecting flange, so as to facilitate connection with a cooling structure (e.g., an engine) with heat dissipation. The right end of the base 10 has an opening, thereby forming a first mounting hole 11.

Further, the wall thickness of the sidewall of the barrel of the base 10 gradually increases in a direction away from the mount 30 (i.e., left side as viewed in fig. 1), thereby securing the supporting strength of the base 10.

Further, as can be seen from fig. 1, a positioning step is provided at the bottom of the inner side wall of the barrel of the base 10 (i.e. the inner side wall of the first mounting hole 11), and the positioning step cooperates with the left end of the outer ring of the shaft-coupling bearing 20, i.e. the positioning step cooperates with the above-mentioned retainer ring 70 to limit the position of the shaft-coupling bearing 20 in the first mounting hole 11.

The application also provides an engine, and an embodiment of the engine comprises the fan mounting structure.

The application also provides engineering machinery, and the embodiment of the engineering machinery comprises the fan mounting structure or the engine.

Alternatively, the work machine may include a work vehicle such as a heavy truck, trailer, excavator, anchor, dozer, road roller, and concrete pump truck.

Optionally, the engineering machinery can further comprise mechanical working equipment such as a tower crane, a construction lifter, a material lifter and the like.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (10)

1. A fan mounting structure, comprising:

A base (10), wherein a first mounting hole (11) is formed in the base (10);

the shaft connecting bearing (20) is arranged in the first mounting hole (11), and a shaft part (21) of the shaft connecting bearing (20) penetrates out of the first mounting hole (11);

A mounting base (30) connected to an end of the shaft portion of the shaft-coupling bearing (20), the mounting base (30) being adapted to mount a fan pulley;

And a fastener (40) connected between the shaft part (21) of the shaft-connected bearing (20) and the mounting seat (30) so as to fix the mounting seat (30) on the shaft part (21) of the shaft-connected bearing (20).

2. Fan mounting structure according to claim 1, characterized in that the first mounting hole (11) is a blind hole.

3. Fan mounting structure according to claim 1 or 2, characterized in that the surface of the mounting base (30) facing the base (10) is provided with a second mounting hole (31), and the shaft portion (21) of the shaft-connected bearing (20) is penetrated in the second mounting hole (31).

4. A fan mounting structure according to claim 3, wherein a first connection hole (22) is provided on an end face of the shaft portion (21) of the shaft-coupling bearing (20), a second connection hole (32) is provided on the mount (30), and the fastener (40) includes a fastening bolt that passes through the second connection hole (32) and the first connection hole (22).

5. Fan mounting structure according to claim 1 or 2, characterized in that the mounting seat (30) comprises a barrel (33), the end of the barrel (33) facing the base (10) being at least partially threaded inside the first mounting hole (11).

6. Fan mounting structure according to claim 5, characterized in that an annular flange (34) is provided on a side wall of the barrel portion (33), one of a surface of the base (10) facing the mount (30) and a surface of the annular flange (34) facing the base (10) is provided with an annular seal groove (50), the other is provided with an annular seal projection (60), and the annular seal projection (60) is embedded into the annular seal groove (50).

7. Fan mounting structure according to claim 1 or 2, characterized in that the inner side wall of the first mounting hole (11) is provided with an annular mounting groove (12), the fan mounting structure further comprises a retainer ring (70), the retainer ring (70) is arranged in the annular mounting groove (12), and the retainer ring (70) stops on the outer side of the outer ring of the shaft-connected bearing (20).

8. Fan mounting structure according to claim 1 or 2, characterized in that the bottom of the first mounting hole (11) is provided with a positioning step, with which the inner side of the outer ring of the shaft bearing (20) abuts.

9. An engine comprising the fan mounting structure according to any one of claims 1 to 8.

10. A construction machine comprising the fan mounting structure according to any one of claims 1 to 8, or comprising the engine according to claim 9.