CN217048847U

CN217048847U - Thrust wheel and engineering machine with same

Info

Publication number: CN217048847U
Application number: CN202121490459.6U
Authority: CN
Inventors: 成忠威; 胡小康; 贺建哲
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Chongqing Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-07-26
Anticipated expiration: 2031-07-01

Abstract

The utility model provides a thrust wheel and have its engineering machine tool, wherein, thrust wheel includes shaft, wheel body, end cover and seal structure, and the wheel body cover is established outside the shaft, and the end cover is established outside the shaft and is located the lateral part of wheel body, and seal structure sets up between wheel body and end cover, and seal structure includes seal groove and sealed piece, and one of seal groove and sealed piece sets up on the terminal surface of wheel body, and another setting is on the outer peripheral face of end cover, and sealed piece stretches into to in the seal groove. The structure enables the outer part of the gap between the wheel body and the end cover to form an S-shaped sealing structure, and impurities such as mud are not easy to enter the thrust wheel from the gap between the wheel body and the end cover, so that the sealing structure in the thrust wheel is not easy to damage. The technical scheme of the utility model the sealing performance of thrust wheel among the prior art has been solved is poor, leads to the defect that inside seal structure damaged easily.

Description

Thrust wheel and engineering machine with same

Technical Field

The utility model relates to an engineering machine tool technical field, concretely relates to thrust wheel and have its engineering machine tool.

Background

In construction machines, thrust wheels are widely used in various kinds of construction machines. The thrust wheel is mainly composed of a wheel shaft, a wheel shell, an end cover, a floating oil seal, a lining and the like. When the thrust wheel works, the wheel shell and the end cover can rotate relatively, so that a linear gap is formed between the wheel shell and the end cover. Because the operating mode of thrust wheel is complicated, often work in adverse circumstances such as muddy water, dust, therefore impurity such as earth get into the thrust wheel through foretell clearance easily inside, cause the inside seal structure damage of thrust wheel. The thrust wheel in the prior art has the defects of poor sealing performance and easy damage of an internal sealing structure due to the above situation.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a thrust wheel, including shaft, wheel body, end cover and seal structure. Wherein, the wheel body is sleeved outside the wheel axle. The end cover is sleeved outside the wheel shaft and is positioned on the side part of the wheel body. The sealing structure is arranged between the wheel body and the end cover and comprises a sealing groove and a sealing block, one of the sealing groove and the sealing block is arranged on the end face of the wheel body, the other sealing block is arranged on the outer peripheral face of the end cover, and the sealing block extends into the sealing groove.

Optionally, the sealing groove is provided on an end surface of the wheel body, and the sealing groove is an annular groove.

Optionally, the sealing block is disposed on the outer circumferential surface of the end cover, the sealing block is of an annular structure, the sealing block includes a first section and a second section that are connected to each other, the first section extends along a radial direction of the wheel shaft, the second section extends along an axial direction of the wheel shaft and toward the wheel body, and the second section extends into the sealing groove.

Optionally, the first and second sections are arranged vertically.

Optionally, there is a gap between the seal block and the seal groove.

Optionally, the number of the end covers is two, the two end covers are respectively located at two sides of the wheel body, and a sealing structure is arranged between each of the two end covers and the wheel body.

Optionally, floating oil seals are arranged between the wheel body and the end cover, and the number of the floating oil seals is two.

Optionally, the end cap is fixedly arranged on the axle.

Optionally, a bushing is provided between the axle and the wheel body.

The utility model also provides an engineering machine tool, including foretell thrust wheel.

The utility model has the advantages of it is following:

1. utilize the technical scheme of the utility model, through set up seal groove and seal block between the terminal surface at the wheel body and the outer peripheral face of end cover for the outside seal structure who forms an "S" type in the clearance of wheel body and end cover. Above-mentioned structure makes impurity such as earth be difficult to enter into to the thrust wheel from the clearance between wheel body and the end cover in to make the inside seal structure of thrust wheel be difficult to damage. Consequently the technical scheme of the utility model the sealing performance of thrust wheel among the prior art has been solved is poor, leads to the defect that inside seal structure damaged easily.

2. The sealing groove and the sealing block are both annular, so that the sealing structure can seal the gap between the wheel body and the end cover in the whole circumferential direction, and the sealing effect is improved.

3. And a gap is formed between the sealing block and the sealing groove, so that the rotation of the wheel body is not hindered.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic cross-sectional view of an embodiment of the inventive bogie wheel.

Description of the reference numerals:

10. a wheel axle; 20. a wheel body; 30. an end cap; 40. a sealing structure; 41. a sealing groove; 42. a sealing block; 421. a first stage; 422. a second section; 50. floating oil seal; 60. and (3) a bushing.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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 invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the thrust wheel of the present embodiment includes an axle 10, a wheel body 20, an end cover 30, and a sealing structure 40. Wherein, the wheel body 20 is sleeved outside the wheel axle 10. The end cover 30 is sleeved outside the wheel axle 10 and is located at the side part of the wheel body 20. The sealing structure 40 is disposed between the wheel body 20 and the end cover 30, the sealing structure 40 includes a sealing groove 41 and a sealing block 42, one of the sealing groove 41 and the sealing block 42 is disposed on the end surface of the wheel body 20, the other is disposed on the outer circumferential surface of the end cover 30, and the sealing block 42 extends into the sealing groove 41.

With the technical solution of the present embodiment, a sealing groove 41 and a sealing block 42 are provided between the end surface of the wheel body 20 and the outer circumferential surface of the end cover 30, so that an "S" shaped sealing structure is formed outside the gap between the wheel body 20 and the end cover 30. The structure enables impurities such as mud and the like not to enter the thrust wheel easily from the gap between the wheel body 20 and the end cover 30, so that the sealing structure inside the thrust wheel is not easy to damage. Therefore, the technical scheme of the embodiment overcomes the defects that the sealing performance of the thrust wheel in the prior art is poor and the internal sealing structure is easily damaged.

The end surface of the wheel 20 refers to the left end surface or the right end surface of the wheel 20 shown in fig. 1, and the outer peripheral surface of the end cover 30 refers to the outer side surface of the end cover 30. By arranging the sealing groove 41 and the sealing block 42 between the end surface of the wheel body 20 and the outer side surface of the end cover 30, an S-shaped labyrinth structure is formed outside the narrow gap between the wheel body 20 and the end cover 30, so that impurities such as mud are not easy to enter into the thrust wheel.

As shown in fig. 1, in the solution of the present embodiment, a sealing groove 41 is provided on an end surface of the wheel body 20, and the sealing groove 41 is an annular groove. Specifically, the annular seal groove 41 can perform a sealing function in the entire circumferential direction, thereby improving the sealing effect.

As shown in fig. 1, in the solution of the present embodiment, a sealing block 42 is provided on the outer circumferential surface of the end cap 30, and the sealing block 42 has an annular structure. The seal block 42 includes a first section 421 and a second section 422 connected to each other, the first section 421 extending in the radial direction of the wheel shaft 10, the second section 422 extending in the axial direction of the wheel shaft 10 and toward the wheel body 20, and the second section 422 extending into the seal groove 41. Specifically, an end of second segment 422 may extend into seal groove 41 when end cap 30 is installed. Meanwhile, as can also be seen from fig. 1, the inner sidewall of seal groove 41 simultaneously extends into the gap between second segment 422 and the outer circumferential surface of end cap 30. The above-described structure thus forms an "S" shaped channel, i.e. a labyrinth seal.

Further, in an embodiment not shown, the positions of the sealing groove 41 and the sealing block 42 may be reversed. For example, an annular flange extending along the outer side is provided on the outer peripheral surface of the end cap 30, the above-mentioned seal groove 41 is provided on the surface of the annular flange facing the wheel body 20, and the seal block 42 is provided on the end surface of the wheel body 20. The above structure can also have the effect of forming an "S" type labyrinth seal structure.

In this embodiment, the number of seal grooves 41 and seal blocks 42 is one, and in some embodiments not shown, the number of seal grooves and seal blocks may be increased. For example, the sealing grooves 41 are provided in plural at intervals in the radial direction of the hub 10, and the plurality of second segments 422 are provided on the first segment 421, and the plurality of second segments 422 and the plurality of sealing grooves 41 are provided in one-to-one correspondence. The structure can form a more complex labyrinth seal structure, and further enhance the sealing effect.

Preferably, the first section 421 and the second section 422 are vertically disposed in this embodiment. Specifically, the first section 421 and the second section 422 are both annular structures, and the cross section of the two sections is L-shaped. The above structure facilitates assembly. Of course, in some embodiments not shown, the first segment 421 and the second segment 422 may be disposed at an angle therebetween.

As shown in fig. 1, in the solution of the present embodiment, a gap is provided between the seal block 42 and the seal groove 41. Because the wheel body 20 and the end cap 30 rotate relative to each other during operation of the thrust wheel, having a clearance between the seal block 42 and the seal groove 41 does not prevent relative rotation therebetween.

As shown in fig. 1, in the solution of the present embodiment, there are two end covers 30, two end covers 30 are respectively located at two sides of the wheel body 20, and a sealing structure 40 is disposed between each of the two end covers 30 and the wheel body 20. Specifically, the first section 421 and the second section 422 are provided on both end caps 30. Accordingly, a seal groove 41 is provided on both end surfaces of the wheel body 20. The above structure enables both sides of the wheel body 20 to be sealed.

As shown in fig. 1, in the solution of the present embodiment, a floating oil seal 50 is provided between the wheel body 20 and the end cover 30. The floating oil seal 50 is composed of a floating seal ring and a floating rubber ring. The sealing structure 40 can prevent impurities such as mud from entering the floating oil seal 50 through the gap between the wheel body 20 and the end cover 30, so that the floating oil seal 50 is not easily damaged. Preferably, the floating oil seals 50 are two pairs.

Preferably, the end cap 30 is fixedly disposed on the axle 10. When the thrust wheel is operated, the wheel body 20 rotates relative to the axle 10, and the end cover 30 is fixed on the axle 10, so that the wheel body 20 rotates relative to the end cover 30. Further, because there is a gap between the seal block 42 and the seal groove 41, the seal structure 40 does not hinder relative rotation between the wheel body 20 and the axle 10.

Preferably, a bushing 60 is disposed between the axle 10 and the wheel body 20. Specifically, the bushing 60 is sleeved outside the axle 10, and the bushing 60 and the axle 10 are in interference fit. Further, the wheel body 20 is sleeved outside the bushing 60.

The embodiment also provides the engineering machine which comprises the thrust wheel. The work machine may be an excavator, a loader, a pump truck, etc.

According to the above description, the thrust wheel of the present patent application has the following advantages:

1. the floating oil seal is improved on the basis of the existing thrust wheel, so that the entering amount of outside soil, gravels and stones can be effectively reduced under the condition of not increasing any material, and the working reliability of the floating oil seal is improved;

2. a labyrinth seal structure newly designed on the basis of the existing thrust wheel structure is relatively simple in production, processing and assembly.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. A bogie wheel, comprising:

an axle (10);

the wheel body (20) is sleeved outside the wheel shaft (10);

the end cover (30) is sleeved outside the wheel shaft (10) and is positioned on the side part of the wheel body (20);

the sealing structure (40) is arranged between the wheel body (20) and the end cover (30), the sealing structure (40) comprises a sealing groove (41) and a sealing block (42), one of the sealing groove (41) and the sealing block (42) is arranged on the end face of the wheel body (20), the other one of the sealing groove (41) and the sealing block (42) is arranged on the outer peripheral face of the end cover (30), and the sealing block (42) extends into the sealing groove (41).

2. The bogie wheel according to claim 1, wherein the sealing groove (41) is provided on an end surface of the wheel body (20), and the sealing groove (41) is an annular groove.

3. The bogie wheel according to claim 2, wherein the seal block (42) is provided on an outer peripheral surface of the end cover (30), the seal block (42) has an annular structure, the seal block (42) includes a first section (421) and a second section (422) connected to each other, the first section (421) extends in a radial direction of the wheel shaft (10), the second section (422) extends in an axial direction of the wheel shaft (10) and toward the wheel body (20), and the second section (422) extends into the seal groove (41).

4. The bogie wheel according to claim 3 wherein the first segment (421) and the second segment (422) are arranged vertically.

5. The bogie wheel according to any of claims 1 to 4 wherein there is a gap between the seal block (42) and the seal groove (41).

6. The bogie wheel according to any of the claims 1 to 4 wherein there are two end caps (30), two end caps (30) being located on each side of the wheel body (20), and the sealing structure (40) being provided between both end caps (30) and the wheel body (20).

7. The bogie wheel according to any of claims 1 to 4 wherein a floating oil seal (50) is provided between the wheel body (20) and the end cap (30).

8. A bogie wheel according to any of the claims 1 to 4 characterized in that the end cap (30) is fixedly arranged on the wheel axle (10).

9. The bogie wheel according to any of the claims 1 to 4 characterized in that a bushing (60) is provided between the wheel axle (10) and the wheel body (20).

10. A working machine, characterized by comprising a bogie wheel according to any of claims 1 to 9.