CN215634824U

CN215634824U - Combined belt pulley and agricultural machine with same

Info

Publication number: CN215634824U
Application number: CN202121329108.7U
Authority: CN
Inventors: 王光学; 张喜龙; 宁召歌
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-25
Anticipated expiration: 2031-06-15

Abstract

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a combined belt pulley and agricultural machinery with the same. The combined belt pulley comprises a first belt pulley and a second belt pulley which are coaxially arranged, an annular concave pit is formed in the first axial end of the first belt pulley, a cylindrical space is formed in the annular concave pit, the second axial end of the first belt pulley is used for being connected with a crankshaft of an engine, and the first axial end of the second belt pulley is fixedly installed in the annular concave pit in an embedded mode. The utility model also provides agricultural machinery which comprises an engine and the combined belt pulley. The combined belt pulley provided by the utility model can realize free combination and use of belt pulleys with different groove types, meets different requirements of different customers, has small structural influence on the manufacture of the combined belt pulley due to no need of integral casting molding, can effectively reduce the rotational inertia of the belt pulley and improve the reliability of a shafting, and has higher universality compared with an integrally cast belt pulley.

Description

Combined belt pulley and agricultural machine with same

Technical Field

The utility model belongs to the technical field of agricultural machinery, particularly relates to a combined belt pulley, and further relates to agricultural machinery.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The existing combined groove type crankshaft pulley is mostly of an integrated structure, a new mold is needed when the groove type combination is replaced once, the period is long, the cost is high, the universality is poor, the requirement of a single customer can be met, and the universality is not realized. And the integral type band pulley is because cast as an organic whole, and outside groove diameter needs more than or equal to the inside groove, and the diameter range is limited, has the condition that some customer's demands can't satisfy. In addition, the integral belt wheel is limited by the structure, the weight is large, the rotational inertia is large, the reliability of a crankshaft system can be influenced, and therefore the requirement of a customer can not be met to the greatest extent on the premise of meeting the reliability of the crankshaft system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve the problems that the combined groove type crankshaft belt pulley in the prior art is high in production cost, poor in universality and capable of influencing the reliability of a crankshaft system, and the purpose is realized through the following technical scheme:

the utility model provides a combined belt pulley in a first aspect, which is characterized by comprising a first belt pulley and a second belt pulley which are coaxially arranged, wherein an annular concave pit is formed at the first axial end of the first belt pulley, a cylindrical space is formed in the annular concave pit, the second axial end of the first belt pulley is used for being connected with a crankshaft of an engine, and the first axial end of the second belt pulley is detachably arranged in the annular concave pit.

The combined belt pulley provided by the utility model can realize free combination and use of belt pulleys with different groove types by detachably connecting the first belt pulley and the second belt pulley, can meet different requirements of different customers to the greatest extent, has small structural influence on the manufacture of the combined belt pulley because the combined belt pulley is not integrally cast, achieves optimal structural design of the two belt pulleys, can effectively reduce the rotational inertia of the belt pulleys and improve the reliability of a shaft system, has higher universality compared with the integrally cast belt pulley, is convenient for unifying parts and components, reduces new parts, avoids the problem that a mold needs to be newly opened when a new groove type is combined, reduces the development period and saves the production cost.

In addition, the combined belt pulley according to the utility model can also have the following additional technical characteristics:

in some embodiments of the present invention, the first end of the second pulley is provided with a mounting ring extending radially outwards, the mounting ring has an outer shape matched with the annular recess, and the mounting ring is embedded in the annular recess.

In some embodiments of the utility model, the mounting ring is connected to the first pulley by a bolt.

In some embodiments of the present invention, the first pulley is formed with a first cavity and a second cavity from an axial first end to an axial second end, the diameter of the second cavity is smaller than that of the first cavity, the second pulley is formed with a third cavity from the axial first end to the axial second end, the diameter of the third cavity is smaller than that of the first cavity, and the first pulley is provided with a drainage hole communicating the first cavity and an outer wall of the first pulley.

In some embodiments of the present invention, a plurality of the drainage holes are provided along a circumferential direction of the first pulley.

In some embodiments of the utility model, the second end of the first pulley is provided with a radially inwardly extending coupling ring provided with a plurality of bolt holes.

In some embodiments of the present invention, a multi-ribbed belt groove is provided along a circumferential direction of an outer wall of the first pulley.

In some embodiments of the present invention, a first V-shaped groove is further provided along a circumferential direction of the outer wall of the first pulley.

In some embodiments of the present invention, a second V-groove is provided along a circumferential direction of an outer wall of the second pulley.

In a second aspect, the utility model provides an agricultural machine, which is characterized by comprising an engine and a combined belt pulley, wherein the combined belt pulley is the combined belt pulley provided by the first aspect of the utility model, and the combined belt pulley is connected with a crankshaft of the engine.

The agricultural machine provided by the second aspect of the present invention has the same advantages as the combined pulley provided by the first aspect of the present invention, and details thereof are omitted.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a sectional structural view of a composite pulley according to an embodiment of the present invention.

The reference symbols in the drawings denote the following:

10: first pulley, 11: annular recess, 12: first cavity, 13: second cavity, 14: drain hole, 15, connection ring, 16: multiple wedge groove, 17: a first V-shaped groove;

20: second pulley, 21: mounting ring, 22: third cavity, 23: and a second V-shaped groove.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, an element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "inner", "side", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, a first aspect of the present invention provides a combined pulley, which is characterized by comprising a first pulley 10 and a second pulley 20, which are coaxially disposed, wherein an axial first end of the first pulley 10 is provided with an annular recess 11, the annular recess 11 forms a cylindrical space, an axial second end of the first pulley 10 is used for connecting a crankshaft of an engine, an axial first end of the second pulley 20 is detachably mounted in the annular recess 11, and the axial first end of the second pulley 20 can be fixedly connected with the first pulley 10 in a screwed or clamped manner.

The combined belt pulley provided by the utility model has the advantages that the first belt pulley 10 is detachably connected with the second belt pulley 20, the groove with different specifications is arranged on the first belt pulley 10 and the second belt pulley 20, the belt pulleys with different groove types are freely combined for use, different requirements of different customers can be met to the greatest extent, in addition, the combined belt pulley is not required to be integrally cast and formed, the manufacturing influence on the combined belt pulley is small, the structural design freedom of the two belt pulleys is larger, the rotational inertia of the belt pulley can be effectively reduced through structural optimization, the reliability of a shaft system is improved, the universality is higher compared with the integrally cast belt pulley, in addition, the combined belt pulley is convenient for unifying parts, the new parts are reduced, the problem that a mold needs to be newly opened when the new groove type combination is adopted is avoided, the development period is shortened, and the production cost is saved.

In some embodiments of the present invention, the first end of the second pulley 20 is provided with a mounting ring 21 extending radially outward, the shape of the mounting ring 21 is adapted to the annular recess 11, the mounting ring 21 is embedded in the annular recess 11, the mounting ring 21 can be fixed by interference connection with the annular recess 11 during installation, or the mounting ring 21 and the annular recess 11 are fixed by bolt connection, the design of the mounting ring 21 can reduce the diameter of the second pulley 20 to meet the user's requirement under the condition that a small-diameter second pulley 20 is required, and the mounting ring 21 is embedded in the annular recess 11, so that the assembly reliability is also good.

In some embodiments of the present invention, the mounting ring 21 is connected to the first pulley 10 by bolts, and a plurality of corresponding bolt holes are disposed in the mounting ring 21 and the annular recess 11, which are connected by bolts, so that the reliability is good and the assembly is convenient.

In some embodiments of the present invention, the first pulley 10 is formed with a first cavity 12 and a second cavity 13 from an axial first end to an axial second end, the diameter of the second cavity 13 is smaller than the diameter of the first cavity 12, the second pulley 20 is formed with a third cavity 22 from the axial first end to the axial second end, the diameter of the third cavity 22 is smaller than the diameter of the first cavity 12, the first pulley 10 is provided with a water drainage hole 14 communicating the first cavity 12 and the outer wall of the first pulley 10, under some usage scenarios, the diameter of the second pulley 20 is smaller, the second end of the first pulley 10 also needs to be provided with a connection ring 15 to connect with a crankshaft, the inner diameter is also smaller, the inside of the combined pulley is formed into a cavity similar to an ellipse, which is easy to generate water accumulation to cause corrosion, and the water drainage hole 14 is designed to drain water accumulation to avoid corrosion.

In some embodiments of the present invention, a plurality of drain holes 14 are provided along the circumferential direction of the first pulley 10, and the drainage effect is enhanced by providing a plurality of drain holes 14.

In some embodiments of the present invention, the second end of the first pulley 10 is provided with a connecting ring 15 extending radially inward, the connecting ring 15 is provided with a plurality of bolt holes, and the first pulley 10 is connected to the crankshaft through the connecting ring 15, so that the connection area between the first pulley 10 and the crankshaft is enlarged, and the connection reliability is improved.

In some embodiments of the present invention, a multi-wedge groove 16 is disposed along the circumferential direction of the outer wall of the first belt pulley 10, a first V-shaped groove 17 is further disposed along the circumferential direction of the outer wall of the first belt pulley 10, the first V-shaped groove 17 is used for providing power to drive the whole vehicle device, a second V-shaped groove 23 is disposed along the circumferential direction of the outer wall of the second belt pulley 20, the second V-shaped groove 23 is used for providing power to drive the whole vehicle device, and various requirements of a host factory on the belt pulley are met by integrating various different groove types on the combined belt pulley, so that development of new molds is reduced, and production cost is reduced.

In a second aspect of the present invention, an agricultural machine is provided, which is characterized by comprising an engine and a combined belt pulley, wherein the combined belt pulley is the combined belt pulley provided in the first aspect of the present invention, and the combined belt pulley is connected with a crankshaft of the engine.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a modular belt pulley, its characterized in that, is including the first belt pulley and the second belt pulley of coaxial setting, the axial first end of first belt pulley is equipped with annular pit, annular pit is formed with cylindrical space, the axial second end of first belt pulley is used for connecting the bent axle of engine, the axial first end of second belt pulley is installed with detachable mode in the annular pit.

2. The modular pulley as claimed in claim 1, wherein the first end of the second pulley has a mounting ring extending radially outwardly, the mounting ring having a profile adapted to the annular recess, the mounting ring being fitted in the annular recess.

3. The modular pulley as in claim 2, wherein the mounting ring is bolted to the first pulley.

4. The modular pulley as claimed in claim 1, wherein the first pulley is formed with a first cavity and a second cavity from a first axial end to a second axial end, the second cavity having a diameter smaller than that of the first cavity, the second pulley is formed with a third cavity from the first axial end to the second axial end, the third cavity having a diameter smaller than that of the first cavity, and the first pulley is provided with a drain hole communicating the first cavity and an outer wall of the first pulley.

5. The modular pulley according to claim 4, wherein a plurality of the drainage holes are provided in a circumferential direction of the first pulley.

6. The modular pulley as in claim 4, wherein the second end of the first pulley is provided with a radially inwardly extending attachment ring having a plurality of bolt holes.

7. The modular pulley according to any one of claims 1 to 6 wherein a multi-ribbed belt groove is provided in a circumferential direction of the outer wall of the first pulley.

8. The modular pulley as claimed in claim 7, wherein a first V-groove is further formed along the circumferential direction of the outer wall of the first pulley.

9. The modular pulley as claimed in any one of claims 1 to 6, wherein a second V-shaped groove is formed along the circumferential direction of the outer wall of the second pulley.

10. Agricultural machine, comprising an engine and a modular pulley according to any one of claims 1 to 9, connected to a crankshaft of said engine.