CN207229580U - A kind of agricultural machine supporting structure - Google Patents

Abstract

The utility model discloses a kind of agricultural machine supporting structure, belong to bearing arrangement technical field.Including Shang Quan, lower circle and retainer between outer ring and inner ring, Shang Quan, lower circle size are corresponding and present down and be coaxially disposed；The upper circle lower face is circumferentially with cricoid sliding way along it, and the Xia Quan upper surfaces are circumferentially with cricoid glide path along it, and slide mass is equipped between the sliding way and glide path；The slide mass includes multiple sliding shoes for convex structure, and the sliding shoe is equipped with the lower surface camber portion that the top-surface camber portion that corresponding sliding way face paste is closed is closed with corresponding glide path face paste.The thrust bearing that the slide mass that the utility model uses obtains, its roll body are contacted with the contact that Internal and external cycle is provided for face, effectively increase axial bearing capacity；Rolling element is with circle contact position up and down at main stress, point contact, line contact bearing capacity not as face contacts.

Description

A support structure for an agricultural machine

technical field

The utility model relates to the technical field of bearing structures, in particular to an agricultural machine support structure.

Background technique

Thrust bearings are special bearings used to bear axial force, that is, bearings that bear force in a direction parallel to the shaft. Thrust bearings can only bear axial loads, and one-way thrust bearings can only bear axial loads in one direction. Two-way thrust ball bearings can bear axial loads in two directions; thrust bearings cannot limit the radial displacement of the shaft, and the limit speed is very low, one-way thrust ball bearings can limit the axial displacement of the shaft and the housing in one direction, two-way bearings Axial displacement in both directions can be limited.

Utility model content

The purpose of the invention of the utility model is to provide a supporting structure for agricultural machinery and a thrust bearing in surface contact, which can meet the working conditions of low speed, heavy load and large load change.

In order to achieve the above object, the technical solution adopted in the utility model is:

A support structure for an agricultural machine, comprising an upper ring, a lower ring and a cage located between the outer ring and the inner ring, the upper ring and the lower ring are arranged coaxially up and down; An annular upper slideway, the upper end surface of the lower ring is provided with an annular glideway along its circumference, and a sliding body is arranged between the upper slideway and the glideway; the sliding body includes a plurality of arc-shaped The sliding block of the structure, the upper curved surface corresponding to the upper slideway surface and the lower curved surface corresponding to the glideway surface are arranged on the sliding block; the axial width of the upper curved surface is greater than the axial width of the glideway Width, the axial width of the lower curved surface is greater than the axial width of the upper slideway; the circumferential end surface of the sliding block is coplanar with the axis of the inner ring; the circumferential end surface of the sliding block is connected to the upper curved surface and the lower surface The curved surface forms a circular arc transition; the cage includes an upper placement part corresponding to the upper ring, a lower placement part corresponding to the lower ring, and a middle placement part corresponding to the sliding block; the upper placement part and the radial end surface of the upper ring O-shaped rubber rings are arranged between them, and O-shaped rubber rings are arranged between the lower placing part and the radial end surface of the lower ring.

Preferably, the cage includes two annular cylinders arranged concentrically and an annular plate arranged between the two annular cylinders, the height of the annular cylinders is less than the distance from the upper end surface of the upper ring to the lower end surface of the lower ring, and the annular plate is located in the middle of the annular cylinders And perpendicular to the annular barrel; the annular plate is provided with a through hole corresponding to the sliding block, and the side of the annular barrel opposite to the annular plate is provided with a groove for the O-shaped rubber ring to limit the position.

Preferably, the grooves can be arranged on the radial end faces of the upper ring and the lower ring.

Preferably, there are at least four sliding blocks.

Preferably, the upper slideway and the lower slideway have the same curvature radius.

Preferably, the upper ring is provided with an upper oil groove along the circumference of the upper slideway, and the upper oil groove is located in the middle of the upper slideway; the lower ring is provided with a lower oil groove along the circumference of the slideway, and the lower oil groove is located in the middle of the slideway.

Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

1. The utility model replaces the rolling element in the prior art by providing a slidable sliding body. The bearing obtained by adopting it has a large bearing capacity, is suitable for low-speed operation, and can meet working conditions with large changes in the bearing capacity. The existing rolling elements of bearings are mostly spherical or cylindrical, and the contact with the inner and outer rings is mostly point contact and line contact. Although the rolling effect is good, it cannot provide high axial bearing capacity in heavy machinery and other industries. , the thrust bearing obtained by the sliding body adopted in the utility model, the contact provided by the rolling body and the inner and outer rings is surface contact, which effectively improves the axial bearing capacity; , Line contact bearing capacity is not as good as surface contact.

2. Existing bearings have high machining accuracy requirements, such as angular contact ball bearings, while the utility model has lower machining accuracy requirements, and the number of sliding bodies used at the same time is less required, at least 4 sliding bodies can meet the work needs . Due to the large bearing capacity of the surface contact, although the relative friction is larger than that of the point contact and the line contact, the utility model and the bearing friction of the prior art are not suitable for low-speed running agriculture and heavy-duty equipment under the condition of lubrication. There is not much difference in power, which can meet the work requirements. During operation, the sliding body can remain relatively stationary or relatively rotate, which has the advantages of sliding bearings and also has the advantages of bearings.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic diagram of the cross-sectional structure of the sliding block of the present invention.

In the accompanying drawings, 1-upper ring, 2-lower ring, 3-cage, 4-sliding block, 5-O type rubber ring.

Detailed ways

The utility model discloses an agricultural machine support structure, which comprises an upper ring 1, a lower ring 2 and a cage 3 located between the outer ring and the inner ring. The upper ring 1 and the lower ring 2 have corresponding sizes and are coaxially arranged up and down; The lower end surface of the upper ring 1 is provided with an annular upper slideway along its circumference, the upper end surface of the lower ring 2 is provided with an annular slideway along its circumference, and a sliding body is arranged between the upper slideway and the slideway. The sliding body includes a plurality of sliding blocks 4 of arc-shaped structure, and the sliding block 4 is provided with an upper curved surface corresponding to the upper slide surface and a lower curved surface corresponding to the sliding surface; The axial width of the upper curved surface is greater than the axial width of the slideway, and the axial width of the lower curved surface is greater than the axial width of the upper slideway; the circumferential end surface of the sliding block 4 is coplanar with the axis of the inner ring; The circumferential end surface of the sliding block 4 forms a circular arc transition with its upper curved surface and lower curved surface; the cage 3 includes an upper placement part corresponding to the upper ring 1, a lower placement part corresponding to the lower ring 2 and a corresponding The middle placement part where the sliding block 4 is placed; an O-shaped rubber ring 5 is provided between the upper placement part and the radial end face of the upper ring 1, and an O-shaped rubber ring 5 is arranged between the lower placement part and the radial end face of the lower ring 2. Type rubber ring 5.

The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

As shown in Figure 1-3, an agricultural machine support structure includes an upper ring 1, a lower ring 2 and a cage 3 located between the outer ring and the inner ring. axis settings. The lower end surface of the upper ring 1 is provided with an annular upper slideway along its circumference, and the upper end surface of the lower ring 2 is provided with an annular glideway along its circumference, and a sliding body is arranged between the upper slideway and the glideway. The sliding body includes four sliding blocks 4 with an arc-shaped structure, and the sliding blocks 4 are provided with an upper curved surface corresponding to the upper slide surface and a lower curved surface corresponding to the lower slide surface. The axial width of the upper curved surface is greater than the axial width of the glideway, and the axial width of the lower curved surface is greater than the axial width of the upper slideway. The circumferential end surface of the sliding block 4 is coplanar with the axis of the inner ring. The circumferential end surface of the sliding block 4 forms a circular arc transition with its upper curved surface and lower curved surface. The cage 3 includes an upper placement portion corresponding to the upper ring 1, a lower placement portion corresponding to the lower ring 2, and a middle placement portion corresponding to the sliding block 4. An O-shaped rubber ring 5 is provided between the upper placement part and the radial end surface of the upper ring 1 , and an O-shaped rubber ring 5 is provided between the lower placement part and the radial end surface of the lower ring 2 .

The cage 3 includes two annular cylinders arranged concentrically and an annular plate arranged between the two annular cylinders. The height of the annular cylinder is less than the distance from the upper end surface of the upper ring 1 to the lower end surface of the lower ring 2. The annular plate is located in the middle of the annular cylinder and connected to the annular cylinder. vertical. The annular plate is provided with a through hole corresponding to the sliding block 4, and the side of the annular cylinder opposite to the annular plate is provided with a groove for the O-shaped rubber ring 5 to limit the position. Of course, grooves can be provided on the radial end faces of the upper ring 1 and the lower ring 2 .

Here, the cage 3 can make the upper ring 1, the lower ring 2 and the sliding body form an integrated structure, and the O-shaped rubber ring 5 can make the sliding body in a sealed state, which can prevent dust; More lubricating grease is injected, so that the bearing lubrication effect is better; compared with the prior art, its installation and use are more convenient, and there is no need to worry about pollution in the installation process.

In order to increase the lubrication effect, the upper ring 1 is provided with an upper oil groove along the circumference of the upper slideway, and the upper oil groove is located in the middle of the upper slideway; the lower ring 2 is provided with a lower oil groove along the circumference of the slideway, and the lower oil groove is located in the middle of the slideway.

The above description is a detailed description of the preferred feasible embodiments of the present utility model, but the embodiments are not used to limit the scope of the patent application of the present utility model. All equivalent changes or modifications completed under the technical spirit suggested by the utility model, All should belong to the patent scope covered by the utility model.

Claims (6)

1. a kind of agricultural machine supporting structure, including Shang Quan, lower circle and the retainer between outer ring and inner ring, Shang Quan, lower circle Size is corresponding and presents down and is coaxially disposed；It is characterized in that：The upper circle lower face is circumferentially with cricoid sliding way, institute along it State Xia Quan upper surfaces and be circumferentially with cricoid glide path along it, slide mass is equipped between the sliding way and glide path；Institute Stating slide mass includes multiple sliding shoes for convex structure, and the sliding shoe is equipped with the top-surface camber that corresponding sliding way face paste is closed The lower surface camber portion that portion and corresponding glide path face paste are closed；The axial width in the top-surface camber portion is more than the axial width of glide path, under The axial width of curved face part is more than the axial width of sliding way；The circumferential end faces of the sliding shoe and the inner ring axis are coplanar； The circumferential end faces of the sliding shoe form arc transition with curved face part thereon and lower surface camber portion；The retainer is included on corresponding Enclose the upper placement section placed, the middle placement section that the lower placement section that corresponding lower circle is placed and corresponding sliding shoe are placed；The upper placement O-shaped rubber ring is equipped between portion and upper circle radial end face, O-shaped rubber is equipped between the lower placement section and lower circle radial end face Cushion rubber.

A kind of 2. agricultural machine supporting structure according to claim 1, it is characterised in that：The retainer includes being arranged concentrically Two annular canisters and the annular slab that is arranged between two annular canisters, annular canister be highly less than upper circle upper surface to Xia Quan lower faces Distance, the annular slab are located among annular canister and vertical with annular canister；The annular slab is equipped with the through hole of corresponding sliding shoe, The annular canister opposed annular plate side is equipped with the groove spacing for the O-shaped rubber ring.

A kind of 3. agricultural machine supporting structure according to claim 2, it is characterised in that：The groove may be provided at circle and On the radial end face of lower circle.

A kind of 4. agricultural machine supporting structure according to claim 1, it is characterised in that：The sliding shoe is at least 4.

A kind of 5. agricultural machine supporting structure according to claim 1, it is characterised in that：The song of the sliding way and glide path Rate radius is identical.

A kind of 6. agricultural machine supporting structure according to claim 1, it is characterised in that：It is circumferential along sliding way on the upper circle Equipped with finishing bathtray, the finishing bathtray is located among sliding way；On the lower circle lower oil groove, the lower oil are circumferentially with along glide path Groove is located among glide path.