CN216960839U

CN216960839U - Roller for round baler

Info

Publication number: CN216960839U
Application number: CN202122758901.5U
Authority: CN
Inventors: 包青春
Original assignee: Inner Mongolia Baoshi Machinery R & D Co ltd
Current assignee: Hulunbuir Baifa Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-07-15
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a roller for a round baler, which comprises a support body (1), a roller body (2) in a hollow cylindrical shape, a mandrel (3) and a support plate (4). The supporting bodies are respectively and fixedly arranged at the open ends of the roller bodies, the mandrels are respectively and fixedly connected with the supporting bodies, and the supporting plates are mutually arranged on the mandrels and between the roller bodies in an alternate mode. The roller further comprises a convex part (5) or a flexible rubber layer (6) arranged on the outer surface of the roller body. The roller for the round baler can apply larger pressure and friction force to material bales, and effectively improves the baling density of the material bales.

Description

Roller for round baler

Technical Field

The utility model relates to the technical field of agricultural machinery bundling devices, in particular to a roller for a round bundling machine.

Background

Round balers are machines that make cylindrical bales of different types of forage grass or straw. The straw bundling machine can automatically pick up straw, grass rods and the like paved in the field, and bundle loose straw or forage grass into cylindrical grass bundles with regular and tidy shapes through the operation procedures of conveying and feeding, rotary compression forming, rope winding and the like. The currently developed straw harvesting round baler is mainly a medium and small-sized steel roller type round baler. Chinese utility model patent CN212116277U discloses a round bale baler roller, comprising a roller body and a flange shaft; the roller body is cylindrical and two ends of the roller body are opened; the roller is characterized in that the number of the flange shafts is two, the flange shafts are composed of flange plates and shaft ends, the flange plates of the two flange shafts are fixedly connected with openings on two sides of the roller body respectively, the shaft ends of the two flange shafts point to the outer side of the roller body, and the shaft ends of the two flange shafts are coaxial with the roller body. However, when the round baler roller disclosed in CN212116277U works, when the roller is subjected to a large outward pressure from a rotating bale, the middle of the roller is deformed and protrudes outward from the bale rolling bin, which results in equipment damage. Under the condition of no reinforcement, only the bales with proper pressure can be beaten, the bales with high pressure cannot be beaten, and if the bales are forcibly beaten, equipment is consumed, so that the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model aims to provide a roller for a round baler, which can apply larger pressure and friction to material bales and effectively improve the baling density of the material bales.

The utility model provides a roller for a round baler, which comprises a support body and a roller body in a hollow cylindrical shape, wherein the support body is respectively and fixedly arranged at the open end of the roller body, and the roller further comprises a support plate and a mandrel; the mandrel is fixedly connected with the supporting body respectively, and the supporting plates are arranged on the mandrel and between the roller bodies at intervals;

the material rotates along with the rotation of the roller in the bale rolling bin of the round baler, and the material gradually forms a material bale which has certain density and gradually forms a cylindrical entity along with the continuous increase of the material fed into the bale rolling bin, namely, the rotary bale is formed. The rotating bale, while under pressure from the rollers, imparts a reaction force to the rollers. The reaction force received by the surface of the roller body is received by the support body and the support plate and further transmitted to the mandrel. The rigid mandrel, the supporting plate and the supporting body can ensure that the roller provided by the utility model can apply larger pressure to the rotating bale in use, and part of the pressure can be effectively converted into circumferential belt rolling acting force applied to the rotating bale, so that the rotating bale can be ensured to smoothly rotate in the bale rolling bin, and finally a material bale with larger bulk density is formed. Specifically, the roller body is a hollow cylinder. The mandrel is a solid shaft or a hollow cylinder.

According to one aspect of the utility model, the mandrel is a cylinder, the support plate is circular, and the support plate is fixedly arranged on the mandrel at equal intervals in the axial direction of the mandrel.

The circular ring-shaped supporting plate can support the roller body in the circumferential direction of 360 degrees, and the roller body and the mandrel can be simply and easily installed. Preferably, four support plates are provided in the roller, i.e. capable of giving sufficient support force to the roller body.

According to one aspect of the utility model, optionally, the supporting plates are arc-shaped plates or reinforcing columns which are uniformly distributed at equal intervals in the circumferential direction of the mandrel. The backup pad sets up to the shape of arc or reinforcing post, can material saving, reduction in manufacturing cost. Meanwhile, the installation mode that the same angles are uniformly distributed at intervals in the circumferential direction of the mandrel can also ensure that the uniform and sufficient supporting force is provided for the roller body in the circumferential direction of the roller body.

According to one aspect of the utility model, preferably, the support plates are circumferentially distributed at any angle in the range of 30 ° to 180 °.

According to one aspect of the utility model, the support body comprises a first shaft end, a support rib and a second shaft end; the second shaft end is connected with the mandrel in a nested manner and is bonded, in interference fit or welded and fixed; the supporting plate and the supporting rib part are fixedly connected with the roller body in a spot welding mode.

The second shaft end is a solid shaft or a hollow cylinder. When the mandrel is a hollow cylinder, the diameter of the outer circle of the second shaft end is smaller than the diameter of the mounting holes at the two ends of the mandrel, so that the two ends of the mandrel can be easily sleeved on the outer circle surface of the second shaft end. The second shaft end is a hollow cylinder, and when the mandrel is a solid shaft or a hollow cylinder, the diameter of the inner hole of the second shaft end is larger than the diameter of the outer circle of the mandrel, so that the two ends of the mandrel can be easily embedded into the inner hole of the second shaft end. The fixed connection mode of the mandrel and the second shaft end can be flexibly arranged. Can be fixedly connected by bonding or welding, and can also be fixedly connected by small interference fit of the shaft hole. When the spindle is fixedly connected in a bonding installation mode, the operation is simple, the cost is saved, the spindle and the second shaft end are not stressed, and stress deformation cannot be generated. When the connecting structure is fixedly connected in a welding installation mode, the connection is firm and reliable, and the mandrel can bear larger circumferential pressure. The fixed connection of the mandrel to the second shaft end is not limited to these three ways, and those skilled in the art should be able to substitute other connection ways empirically.

The supporting rib parts of the two supporting bodies of the roller are the same as the supporting plates, and play a role of supporting the roller body from the inner parts of the two ends. The roller body is provided with a welding hole, and the support plate, the support rib part and the roller body are fixedly connected through spot welding. Under the condition of meeting the fixed connection strength, the thermal deformation of the roller body of the hollow cylinder is minimum by adopting a spot welding mode.

According to one aspect of the utility model, the roller of the utility model optionally further comprises a flexible layer arranged in close contact with the outer surface of the roller body, the flexible layer being made of rubber and having a thickness in the range of 2mm to 20 mm.

The circumferential surface of the rigid roller body is coated with a layer of flexible rubber layer, and the roller body is additionally provided with a layer of support, so that the integral strength of the roller can be further improved. Because the surface of the flexible rubber layer is rough, the friction force which is given to the rotary grass bales by the roller in the rotating process is increased, and the rotary grass bales are better driven to rotate. After the peripheral surface of the rigid roller body is coated with the flexible rubber layer, the danger of rigid contact between the roller bodies is reduced, the gap between two adjacent roller bodies can be set smaller, and the friction coefficient of the coated flexible rubber layer is large.

According to one aspect of the utility model, optionally, the surface of the roller body is provided with protruding parts, the protruding parts are strip-shaped, are distributed at equal angles in the circumferential direction of the roller body and extend along the axial direction of the roller body.

The bellying also can further improve the holistic intensity of roller, increases the roller simultaneously and gives the frictional force of rotatory bale in rotatory process, drives rotatory bale and rotates better.

According to one aspect of the present invention, preferably, the convex portion is integrally formed with the roller body, the convex portion has a height ranging from 3mm to 10mm, a triangular cross-section and a vertex angle ranging from 30 ° to 160 °. The height, the cross-sectional shape and the vertex angle of the convex part have great influence on the surface appearance of the roller. The excessively flat convex part cannot drive the accumulated bales to rotate; the lug boss with the excessively high tip can block the rotating action of the materials close to the lug boss with the high tip, so that the excessive materials are accumulated near the lug boss with the high tip, and excessive pressure is formed, and the smooth rotation of the initial accumulated straw bale is not facilitated.

According to one aspect of the utility model, in particular, the height of the raised portion is 10mm and the angle of the apex angle is 120 °.

According to one aspect of the utility model, optionally, the raised portion is an elongated body welded to the outer surface of the roller body. Preferably a metal strip of rectangular or circular cross-section. The mode of forming the convex part on the surface of the outer circle of the roller body by directly welding the rectangular metal strip or the cylindrical metal strip is simple to operate and low in cost, and the convex part can be formed by welding metal strips with different shapes and sizes according to different properties of different materials, so that the roller has good adaptability.

The roller for the round baler has the following outstanding advantages and beneficial effects: the roller is provided with the mandrel and the supporting plate, so that large pressure and friction force can be given to the material bundle, the bundling density of the material bundle is effectively improved, and material blockage is effectively avoided.

Drawings

FIG. 1 is a three-dimensional schematic view of one embodiment of a drum for a round baler of the present invention;

FIG. 2 is a schematic view of the internal structure of one embodiment of the roll for a round baler of the present invention;

FIG. 3 is a cross-sectional view of one embodiment of a drum for a round baler of the present invention;

FIG. 4 is a schematic view of a raised portion of one embodiment of a roll for a round baler of the present invention;

figure 5 is a cross-sectional view of another embodiment of the roll of the present invention for use in a round baler.

The reference numbers: 1-a support; 11-a first shaft end; 12-support ribs; 13-second axial end; 2-roller body; 3-a mandrel; 4-a support plate; 5-a boss; 6-a flexible rubber layer;

Detailed Description

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 will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 1, 2 and 3, in one embodiment of the roller for a round baler of the present invention, the roller comprises a support body 1 and a roller body 2 in a hollow cylindrical shape, and further comprises a mandrel 3 and a support plate 4. The supporter 1 is fixed in the open end at 2 both ends of the barrel body respectively, the both ends of dabber 3 respectively with supporter 1 fixed connection, backup pad 4 is fixed in on 3 surfaces of dabber and 2 internal surfaces of barrel body alternately each other.

The material rotates along with the rotation of the roller in the bale rolling bin of the round baler, and the material gradually forms a material bale which has certain density and gradually forms a cylindrical entity along with the continuous increase of the material fed into the bale rolling bin, namely, the rotary bale is formed. The rotating bale, while under pressure from the rollers, imparts a reaction force to the rollers. The reaction force received by the surface of the roll body is received by the support body 1 and the support plate 4 and further transferred to the mandrel 3. The rigid mandrel 3, the supporting plate 4 and the supporting body 1 can ensure that the roller provided by the utility model can apply larger pressure to the rotating bales in use, and part of the pressure can be effectively converted into circumferential belt rolling acting force applied to the rotating bales, so that the rotating bales can be ensured to smoothly rotate in the bale rolling bin, the blockage is avoided, and finally the material bale with larger bulk density is formed.

In particular, in one embodiment, the mandrel 3 is a hollow cylinder. The supporting plate 4 is circular and fixed on the mandrel 3 at equal intervals in the axial direction of the mandrel 3. The ratio of the spacing to the length of the roller body 2 is 1/6 or 1/7, but 1/5 is preferred.

The roller body 2 and the mandrel 3 are the longest length parts in the whole roller, and occupy a large mass ratio. In one embodiment, the mandrel 3 is preferably provided as a hollow cylinder, which can greatly reduce its weight compared to a solid shaft structure. In the working process of the round baler, the transmission system applies a small force to the roller to rotate the lighter roller, so that the energy consumed in the operation of the round baler is saved. The supporting plate 4 is fixedly arranged between the inner surface of the roller body 2 and the outer surface of the mandrel 3 in the roller. The supporting plate 4 is added to enhance the overall rigidity of the roller, so that the pressure of the roller given by the rotating bales is dispersed to the surface of the whole roller body 2 in the axial direction, and the problem that the shaft sleeve type thin-walled structure cannot bear too large circumferential pressure is solved. The circular ring-shaped supporting plate 4 can provide uninterrupted supporting force for the roller body 2 in the circumferential direction of 360 degrees, and is simple and easy to install with the roller body 2 and the mandrel 3. Four supporting plates 4 are arranged in the roller, and the supporting bodies 1 at two ends of the roller body 2 divide the space inside the whole roller body 2 into five equally-spaced sections in the axial direction, so that enough supporting force is provided for the roller body 2, and the manufacturing cost can be saved.

According to one embodiment of the utility model, the support body 1 comprises a first shaft end 11, support ribs 12 and a second shaft end 13. The second shaft end 13 is connected with the mandrel 3 in a nested manner and is welded and fixed; the supporting plate 4 and the supporting rib part 12 are fixedly connected with the roller body 2 by spot welding.

In one embodiment, the second axial end 13 and the mandrel 3 are hollow cylinders. The diameter of the outer circle of the second shaft end 13 is smaller than the diameter of the mounting holes at the two ends of the mandrel 3, so that the two ends of the mandrel 3 can be easily sleeved on the surface of the outer circle of the second shaft end 13. When the mandrel 3 and the second shaft end 13 are fixedly connected in a welding installation mode, the connection is firm and reliable, and larger circumferential pressure can be borne. The support ribs 12 of the two support bodies 1 of the roller, like the support plates 4, serve to support the roller body 2 from the inside of both ends. The roller body 2 is provided with a welding hole, and the annular supporting plate 4 and the supporting rib part 12 are fixedly connected with the roller body 2 in a spot welding manner. Under the condition of meeting the fixed connection strength, the thermal deformation of the roller body 2 of the hollow cylinder is minimum by adopting a spot welding mode.

As shown in fig. 4, in one embodiment, the roller body 2 has protrusions 5 on the surface thereof, and the protrusions 5 are in the form of stripes, are distributed at equal angles in the circumferential direction of the roller body 2, and extend in the axial direction of the roller body 2.

The bulge part 5 can further improve the overall strength of the roller, and simultaneously increases the friction force given to the rotary bale by the roller in the rotating process, so that the rotary bale is better driven to rotate.

In one embodiment of the present invention, it is preferable that the boss 5 is integrally formed with the roller body 2, the boss 5 has a height ranging from 3mm to 10mm, a triangular cross-section, and an apex angle ranging from 30 ° to 160 °. The height, cross-sectional shape and apex angle of the raised portions 5 have a great influence on the surface profile of the roller. The excessively flat projections 5 do not have the function of driving the accumulated bales to rotate; the excessively high-point protruding portion 5 blocks the rotation of the material close to the high-point protruding portion 5, so that the excessive material is accumulated near the high-point protruding portion 5, excessive pressure is formed, and smooth rotation of the accumulated bales is not facilitated.

In one embodiment, in particular, the height of the projection 5 is 10mm and the angle of the apex angle is 120 °.

In the process of forming the rotary bale, the movement of the initial materials becomes smooth under the driving action of the convex parts 5, so that the process of accumulating the bale is rapidly entered. In the bale accumulation process, the contact between the bales and the rollers is strengthened through the driving action of the protrusions 5, and the bales are better driven to rotate under the combined action of the driving force of the protrusions 5 and the friction force of the roller bodies 2. The rib-shaped protrusions 5 can strengthen the surface strength of the roller body 2, i.e. can increase the pressure on the rotary grass bales, and is beneficial to increasing the bale density of the formed material bales.

In another embodiment of the roller for the round baler, the roller comprises a support body 1 and a roller body 2 in a hollow cylindrical shape, wherein the support body 1 is fixedly arranged at the open end of the roller body 2, and the roller further comprises a mandrel 3 and a support plate 4; the mandrel 3 is respectively fixedly connected with the support body 1, and the support plates 4 are mutually and fixedly arranged between the mandrel 3 and the roller body 2; the ratio of the interval between the supporting plates 4 to the length of the roll body 2 is 1/5.

As shown in fig. 5, according to another embodiment of the present invention, specifically, the mandrel 3 is a hollow cylinder, and the support plate 4 is a ring shape and is fixedly disposed on the mandrel 3 at equal intervals in the axial direction of the mandrel 3.

In another embodiment, the support body 1 comprises a first shaft end 11, support ribs 12 and a second shaft end 13. The second shaft end 13 is connected with the mandrel 3 in a nested manner and fixedly connected with the mandrel in an interference fit manner. The supporting plate 4 and the supporting rib part 12 are fixedly connected with the roller body 2.

In another embodiment, a support plate 4 is arranged between the inner surface of the roller body 2 and the outer surface of the mandrel 3, thereby greatly enhancing the rigidity of the whole roller. The circular ring-shaped supporting plate 4 can support the roller body 2 in the circumferential direction of 360 degrees, and is simple and easy to install with the roller body 2 and the mandrel 3. Preferably, four support plates 4 are provided in the roll body 2 to give a sufficient supporting force to the roll body.

The fixed connection mode of the mandrel 3 and the second shaft end 13 is set as small interference fit connection of the shaft hole. When the installation mode fixed connection with interference fit, only need the manual work to strike and can install, need not additionally transport to other installation sites and provide erection equipment, connect reliably and process is simple, practices thrift the cost. The support ribs 12 of the two support bodies 1 of the roller, like the support plates 4, serve to support the roller body 2 from the inside of both ends. Welding holes are formed in the roller body 2, and the supporting plate 4 and the supporting rib part 12 are fixedly connected with the roller body 2 in a spot welding mode. Under the condition of meeting the fixed connection strength, the thermal deformation of the roller body 2 of the hollow cylinder is minimum by adopting a spot welding mode.

According to another embodiment of the utility model, the roller further comprises a flexible rubber layer arranged to wrap the entire roller body 2 against the outer surface of the roller body 2. The thickness of the rubber layer is preferably 2mm to 20 mm. Too thick easily causes the material to be carried between the rollers. When the rubber layer is arranged, the surface of the roller can be smooth. The roller without the bulge is simpler and easier to process, the fatigue strength is increased, and the service life is prolonged.

As shown in fig. 5, after the rigid roller body 2 is coated with a layer of flexible rubber layer 6 on the circumferential surface, the danger of rigid contact between two adjacent roller bodies 2 is reduced, the gap between two adjacent roller bodies 2 can be set smaller, and the friction coefficient of the coated flexible rubber layer 6 is large, so that the bundling machine using the roller of the embodiment has better adaptability, can bundle materials with smooth surfaces, and can bundle shorter materials, such as cotton and wool. Because the surface of the flexible rubber layer 6 is rough, the friction force which is given to the rotary bale by the roller in the rotating process is increased, and the rotary bale is better driven to rotate.

The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be implemented using conventional devices and methods known in the art.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller for a round baler comprises a support body (1) and a roller body (2) in a hollow cylindrical shape, wherein the support body (1) is fixedly arranged at the open end of the roller body (2) respectively, and is characterized by further comprising a mandrel (3) and a support plate (4); the mandrel (3) is fixedly connected with the support body (1) respectively, and the support plates (4) are arranged on the mandrel (3) and between the roller bodies (2) at intervals.

2. A drum for a baler according to claim 1, characterized in that the mandrel (3) is a cylinder, the support plate (4) is circular and is fixedly arranged on the mandrel (3) at equal intervals in the axial direction of the mandrel (3).

3. A drum for round baler according to claim 2, characterized in that the support plate (4) is an arc-shaped plate or a reinforcing column, evenly distributed at equal angular intervals in the circumferential direction of the mandrel (3).

4. A drum for a baler according to claim 3, characterised in that the support plate (4) is fixedly arranged on the mandrel (3) at an angle of any circumferential distribution in the range 30 ° -180 ° at an interval having a ratio of the length of the interval to the length of the drum body (2) of 1/6 or 1/7.

5. A drum for a baler according to claim 2 or 3, characterized in that the support body (1) comprises a first shaft end (11), support ribs (12) and a second shaft end (13); the second shaft end (13) is connected with the mandrel (3) in a nested manner and is bonded, in interference fit or welded and fixed; the supporting plate (4), the supporting rib parts (12) and the roller body (2) are fixedly connected in a spot welding mode.

6. A roller for a baler according to claim 5, characterized in that it further comprises a flexible rubber layer (6) of thickness 2mm to 20mm, arranged in intimate contact on the outer surface of the roller body (2).

7. A roller for a baler according to claim 5, characterized in that the roller body (2) has protrusions (5) on the surface, the protrusions (5) are strip-shaped and are distributed at equal angles in the circumferential direction of the roller body (2) and extend along the axial direction of the roller body (2).

8. A drum for baler according to claim 7, characterized in that the raised portion (5) is integrally formed with the drum body (2), the raised portion (5) having a height in the range of 3mm to 10mm, a cross section in the form of a triangle with a circular arc at the apex angle in the range of 30 ° to 160 °.

9. Drum for a round baler according to claim 8, characterized in that the height of the raised portion (5) is 10mm and the angle of the apex angle is 120 °.

10. A drum for round baler according to claim 7, characterized in that said raised portion (5) is an elongated body of rectangular or circular cross section welded to the outer surface of the drum body (2); the mandrel (3) is a hollow cylinder.