Upper flattening roller assembly of mowing and flattening machine

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to an upper flattening roller assembly of a mowing and flattening machine, which comprises an upper flattening roller shaft, a flattening roller is arranged outside the upper flattening roller shaft and consists of a left flattening roller and a right flattening roller, the left flattening roller is formed by arranging at least two identical left flattening roller units, and the right flattening roller is formed by arranging at least two identical right flattening roller units. The right flattening roller is formed by arranging right flattening roller units which are in one-to-one symmetry with the left flattening roller units; patterns on the outer surfaces of the left flattening roller units and the right flattening roller units are butted to form a plurality of herringbone patterns; the outer portion of the upper flattening roller shaft is fixedly connected with a polygonal roller shaft shell, the cross section of the polygonal roller shaft shell is in a regular polygon shape, the left flattening roller unit and the right flattening roller unit are arranged outside the polygonal roller shaft shell in a sleeving mode, a cavity is formed in the middle of each flattening roller unit, and the shape of the cross section of each cavity is the same as that of the cross section of the polygonal roller shaft shell. The polygonal roller shaft shell can prevent slipping between the flattening roller unit and the polygonal roller shaft shell during rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, specifically is a kind of grass cutting and flattening machine's upper flattening roller assembly. BACKGROUND

[0002] Grass cutting and flattening machine is a kind of agricultural machinery equipment for harvesting pasture, can be carried out in one time pasture mowing, flattening and strip operation.Grass cutting and flattening machine's flattening structure generally includes upper flattening roller and lower flattening roller, flattening roller is provided with herringbone pattern, flattening roller is sleeved on roller shaft and rotates with roller shaft, upper flattening roller and lower flattening roller flatten the mown pasture to accelerate the evaporation of internal moisture of pasture.Flattening roller of grass cutting and flattening machine is made of rubber, roller shaft is made of metal, flattening roller sometimes appears skidding phenomenon when rotating with roller shaft.The existing grass cutting and flattening machine generally adopts integral rubber flattening roller, such as the alfalfa flattening test device disclosed in Chinese invention patent CN104170599A, integral rubber flattening roller needs to be replaced as a whole if some section is seriously worn or damaged, which increases cost. SUMMARY

[0003] The utility model discloses to solve the problem that skidding phenomenon exists between roller shaft and flattening roller of grass cutting and flattening machine, provide a kind of upper flattening roller assembly of grass cutting and flattening machine, which is not prone to skidding phenomenon between flattening roller and roller shaft and adopts sectional structure flattening roller.

[0004] To solve the above technical problem, the utility model discloses upper flattening roller shaft, the outside of upper flattening roller shaft is equipped with the flattening roller that can rotate with upper flattening roller shaft, the outer surface of flattening roller is equipped with multiple "herringbone" patterns, its structural characteristics are as follows:the flattening roller is composed of left flattening roller and right flattening roller, the left flattening roller is composed of at least two left flattening roller units of same arrangement, the right flattening roller is composed of at least two right flattening roller units of same arrangement with the left flattening roller unit one-to-one symmetry, the pattern on the outer surface of left flattening roller unit and right flattening roller unit is connected after forming multiple "herringbone" patterns;The outside of upper flattening roller shaft is fixedly connected with polygonal roller shaft shell, the cross section of polygonal roller shaft shell is regular polygon and is arranged along the length direction of upper flattening roller shaft, left flattening roller unit, right flattening roller unit are sleeved on the outside of polygonal roller shaft shell, and the middle part of left flattening roller unit, right flattening roller unit is equipped with the cavity for polygonal roller shaft shell to pass through, the cross section shape of cavity is same with the cross section shape of polygonal roller shaft shell.

[0005] With the above structure, the flattening roller consists of a left flattening roller and a right flattening roller. The left flattening roller is composed of at least two left flattening roller units, and the right flattening roller is composed of at least two right flattening roller units. The left and right flattening roller units are symmetrically arranged, and the patterns on the outer surfaces of the left and right flattening roller units are aligned to form multiple herringbone patterns. The left and right flattening roller units are not directly fitted onto the outer surface of the upper flattening roller shaft, but are instead fixedly connected to a polygonal roller shaft shell with a regular polygonal cross-section. A cavity with a regular polygonal cross-section is opened in the middle of the left and right flattening roller units, and the cross-section of the cavity of the flattening roller unit is consistent with the polygonal cross-section. The roller shells have the same cross-sectional shape, and the polygonal roller shells can pass through the cavity of the flattening roller unit. When the upper flattening roller rotates, the polygonal roller shells rotate accordingly, driving the flattening roller unit to rotate synchronously. Since the cross-sections of the polygonal roller shells and the cavity of the flattening roller unit are both regular polygons, slippage is unlikely to occur between the polygonal roller shells and the flattening roller unit. Therefore, the flattening roller can withstand greater torque when rotating, thereby improving the squeezing force and squeezing stability of the flattening roller on the forage. Both the left and right flattening rollers are composed of multiple sections. When a section is worn or damaged and needs to be replaced, it is not necessary to replace the entire flattening roller, saving the replacement cost of the flattening roller.

[0006] At least one surface of the internal cavity of the left and right flattening roller units is provided with a steel plate to prevent slippage between the flattening roller unit and the polygonal roller housing.

[0007] The cross-section of the polygonal roller housing is square.

[0008] Connecting end plates are fixedly connected to both ends of the polygonal roller shaft housing. The upper flattening roller shaft passes through the connecting end plates and is fixedly connected to the connecting end plates. The connecting end plates are connected to a flattening roller fixing plate that presses the left and right flattening rollers towards the middle and prevents the left and right flattening rollers from falling off the polygonal roller shaft.

[0009] Multiple patterns on the surfaces of the left and right flattening roller units are evenly distributed along the circumference of the flattening rollers. The number of protrusions and grooves in the patterns is equal to the number of sides of the cross-section of the polygonal roller shell. The angle of twist of the protrusions and grooves from one end of the flattening roller unit to the other end is 360° divided by the number of sides of the cross-section of the polygonal roller shell.

[0010] The upper flattening roller assembly of the grass cutting and flattening machine, the flattening roller is composed of a plurality of left flattening roller units and right flattening roller units arranged in series, the left flattening roller units are identical, the right flattening roller units are also identical, and the left flattening roller units and the right flattening roller units are arranged in one-to-one symmetry, when a certain flattening roller unit needs to be replaced, only one flattening roller unit needs to be replaced, and the whole flattening roller unit does not need to be replaced, thereby saving cost; the flattening roller unit is not directly sleeved on the outside of the upper flattening roller shaft, but a fixed polygonal roller shaft shell is arranged on the outside of the upper flattening roller shaft, the cross section of the polygonal roller shaft shell is a regular polygon, the inside of the flattening roller unit is provided with a cavity with the same shape as the cross section of the polygonal roller shaft shell, the polygonal roller shaft shell can penetrate through the cavity, the design of the regular polygon makes the flattening roller unit and the polygonal roller shaft shell not easy to slip, and the cavity in the flattening roller unit is provided with a steel plate, the rigidity of the flattening roller unit is improved, the flattening roller unit is not easy to deform, and the slipping phenomenon between the flattening roller unit and the polygonal roller shaft shell is further prevented. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an external schematic view of the upper flattening roller assembly of the utility model after combination;

[0012] Figure 2 It is a side view of the upper flattening roller assembly of the utility model after combination;

[0013] Figure 3 It is an A-A cross section schematic view of Figure 2 ;

[0014] Figure 4 (a) is the external schematic view of the upper flattening roller shaft and the square roller shaft shell after connection, Figure 4 (b) is the cross section schematic view of the upper flattening roller shaft and the square roller shaft shell after connection;

[0015] Figure 5 (a) is the structural schematic view of the left flattening roller unit, Figure 5 (b) is the axial cross section schematic view of the left flattening roller unit, Figure 5 (c) is the C-C cross section schematic view of Figure 5 (b);

[0016] Figure 6 (a) is the structural schematic view of the right flattening roller unit, Figure 6 (b) is the axial cross section schematic view of the right flattening roller unit, Figure 6 (c) is the D-D cross section schematic view of Figure 6 (b);

[0017] Figure 7 (a) is the B view of Figure 4 (b), Figure 7 (b) is the plane schematic view of the flattening roller fixing disc;

[0018] Figure: 1, left flattening roller unit; 11, first groove; 12, first cavity; 13, first steel plate; 2, right flattening roller unit; 21, second groove; 22, second cavity; 23, second steel plate; 3, upper flattening roller shaft; 31, power input end; 32, driven end; 4, connecting blank; 41, first threaded hole; 5, square roller shaft shell; 6, flattening roller fixing disc; 61, through hole; 62, second threaded hole. DETAILED DESCRIPTION

[0019] Referring to Figures 1-7 , an upper flattening roller assembly of a grass cutting and flattening machine, comprising an upper flattening roller shaft 3 and a flattening roller arranged outside the upper flattening roller shaft 3, one end of the upper flattening roller shaft 3 is a power input end 31, the other end is a driven end 32, the flattening roller rotates with the upper flattening roller shaft 3, the outer surface of the flattening roller is provided with a plurality of "person" shaped patterns, the flattening roller is made of rubber, the flattening roller is not integrally formed, the flattening roller is composed of a left flattening roller and a right flattening roller, both the left flattening roller and the right flattening roller adopt a segmented structure; as shown in Figure 1 , 2 , the left flattening roller is composed of at least two sections of the same left flattening roller unit 1 arranged together, the right flattening roller is composed of at least two sections of the same right flattening roller unit 2 arranged together, both the left flattening roller unit 1 and the right flattening roller unit 2 are provided with two sections in the figure, of course, more than three sections can also be provided, the left flattening roller unit 1 and the right flattening roller unit 2 are arranged in one-to-one symmetry, specifically, the left flattening roller unit 1 and the right flattening roller unit 2 are axially symmetrical, so that the patterns on the outer surfaces of the left flattening roller unit 1 and the right flattening roller unit 2 are butt jointed to form a plurality of "person" shaped patterns; the flattening roller unit is not directly sleeved on the outer surface of the upper flattening roller shaft 3, specifically, a polygonal roller shaft shell is fixedly connected outside the upper flattening roller shaft 3, the cross section of the polygonal roller shaft shell is a regular polygon and is arranged along the length direction of the upper flattening roller shaft 3, the polygonal roller shaft shell rotates with the upper flattening roller shaft 3 when the upper flattening roller shaft 3 rotates, the left flattening roller unit 1 and the right flattening roller unit 2 are sleeved outside the polygonal roller shaft shell, the middle part of the left flattening roller unit 1 and the right flattening roller unit 2 is provided with a cavity with a cross section of a regular polygon, specifically, the middle part of the left flattening roller unit 1 is provided with a first cavity 12, the middle part of the right flattening roller unit 2 is provided with a second cavity 22, the cross section shapes of the first cavity 12 and the second cavity 22 are the same as the cross section shape of the polygonal roller shaft shell, the polygonal roller shaft shell can penetrate through the first cavity 12 and the second cavity 22, the outer surface of the polygonal roller shaft shell is attached to the inner surface of the cavity of the flattening roller unit, the polygonal roller shaft shell can drive the flattening roller unit to rotate synchronously when the polygonal roller shaft shell rotates, the shape of the polygon makes it not easy to slip between the flattening roller unit and the polygonal roller shaft shell, as shown in Figures 4-7As shown, the polygonal roller shaft housing is a square roller shaft housing 5, the cross sections of the first cavity 12 and the second cavity 22 are also square, of course, the cross sections of the polygonal roller shaft housing, the first cavity 12 and the second cavity 22 can also be designed as pentagonal or other polygons.

[0020] Referring to Figures 1-6 , at least one surface of the internal cavities of the left flattening roller unit 1 and the right flattening roller unit 2 is provided with a steel plate, which can enhance the strength of the flattening roller unit, prevent the flattening roller unit from being deformed, and further prevent the flattening roller unit from slipping with the polygonal roller shaft, as shown in Figure 3 、 5 , a first steel plate 13 is arranged on the inner surface of the first cavity 12 of the left flattening roller unit 1, and a second steel plate 23 is arranged on the inner surface of the second cavity 22 of the right flattening roller unit 2, the cross sections of the first steel plate 13 and the second steel plate 23 are both "L" shaped, arranged on two surfaces of the cavity, of course, the steel plate can also be arranged on one surface or more than three surfaces of the cavity, which can all prevent the flattening roller unit from slipping.

[0021] Referring to Figure 1 、 3 -7, the square roller shaft housing 5 is fixedly connected with a connecting blanking plate 4 at both ends, the upper flattening roller shaft 3 penetrates through and is fixedly connected with the connecting blanking plate 4, the square roller shaft housing 5 is fixedly connected with the upper flattening roller shaft 3 through the connecting blanking plate 4, the connecting blanking plate 4 is connected with a flattening roller fixing disc 6, the flattening roller fixing disc 6 extrudes the left flattening roller and the right flattening roller towards the middle, preventing the left flattening roller and the right flattening roller from falling off the square roller shaft housing 5, the flattening roller fixing disc 6 is detachably connected with the connecting blanking plate 4, specifically, a through hole 61 for the upper flattening roller shaft 3 to penetrate through is arranged at the center of the flattening roller fixing disc 6, a plurality of second threaded holes 62 are arranged on the outer side of the through hole 61, a first threaded hole 41 corresponding to the second threaded hole 62 is arranged on the connecting blanking plate 4, the flattening roller fixing disc 6 is connected with the connecting blanking plate 4 through bolts (not shown in the figure), the disc surface size of the flattening roller fixing disc 6 is greater than the cross section size of the square roller shaft housing 5, the left flattening roller unit 1 is provided with a first recess 11 in which the flattening roller fixing disc 6 can be embedded, the right flattening roller unit 2 is provided with a second recess 21 in which the flattening roller fixing disc 6 can be embedded, the first recess 11 and the second recess 21 are both arranged at the end portions of the flattening roller units close to both ends of the upper flattening roller shaft 3, since the disc surface of the flattening roller fixing disc 6 is greater than the cross section of the square roller shaft housing 5, the flattening roller fixing disc 6 can prevent the flattening roller unit from falling off the square roller shaft housing 5.

[0022] Referring to Figure 1 、 5, 6, the plurality of patterns on the surface of the left flattening roller unit 1 and the right flattening roller unit 2 are evenly distributed along the circumference of the flattening roller, the plurality of left flattening roller units 1 and the plurality of right flattening roller units 2 are arranged and connected, and the patterns formed on the outer surface are in the form of a "person" shape, the patterns are formed by the interval distribution of protrusions and recesses, the protrusions and recesses are both in the form of a "person" shape, the number of protrusions and recesses of the patterns is the number of edges of the cross section of the polygonal roller shaft shell, and the twisting angle of the protrusions and recesses of the patterns from one end of the flattening roller unit to the other end is 360 degrees divided by the number of edges of the cross section of the polygonal roller shaft shell, such as Figure 1 、 5 , 6, the cross section of the square roller shaft shell 5 is a square, the outer surface of the left flattening roller unit 1 and the right flattening roller unit 2 is provided with four protrusions and four recesses, and the twisting angle of the protrusions and recesses from one end of the flattening roller unit to the other end is 90 degrees. The advantages of this design are as follows: the plurality of left flattening roller units 1 adopt the same structure, the plurality of right flattening roller units 2 also adopt the same structure, the patterns at the ends of any two left flattening roller units 1 or any two right flattening roller units 2 can be connected to form continuous textures after being connected, which is also convenient for installation, the flattening roller unit does not need to be arranged in a specific order, when a section of the flattening roller unit needs to be replaced, the section can be replaced, and the entire flattening roller does not need to be replaced.

[0023] It should be noted that the above-mentioned upper, lower, left, right and the like are described according to the upper flattening roller assembly shown in the drawings, and do not limit the structure of the upper flattening roller assembly of the utility model, and the lower flattening roller of the grass cutting and flattening machine can also adopt the same structure as the upper flattening roller assembly.

[0024] Working process: when assembling, the left flattening roller unit 1 and the right flattening roller unit 2 are sleeved on the square roller shaft shell 5, the patterns on the outer surfaces of the left flattening roller unit 1 and the right flattening roller unit 2 are arranged in a "person" shape, then one flattening roller fixing disc 6 is embedded in the first groove 11 at the end of the left flattening roller unit 1 on the outside, and the flattening roller fixing disc 6 is connected with the connecting blanking plate 4 by bolts, then the other flattening roller fixing disc 6 is embedded in the second groove 21 at the end of the right flattening roller unit 2 on the outside, and the flattening roller fixing disc 6 is connected with the connecting blanking plate 4 by bolts, the two flattening roller fixing discs 6 press the left flattening roller unit 1 and the right flattening roller unit 2 to the middle, preventing the left flattening roller unit 1 and the right flattening roller unit 2 from falling off the square roller shaft shell 5, and the upper flattening roller assembly is installed on the grass cutting and flattening machine after being assembled. The grass cutting and flattening machine is also provided with a lower flattening roller (not belonging to the protection scope of the utility model, not shown in the figure) used in cooperation with the upper flattening roller assembly, and the upper flattening roller and the lower flattening roller jointly flatten the cut grass; when the grass cutting and flattening machine operates, the upper flattening roller shaft 3 rotates under the driving of external power, the square roller shaft shell 5 rotates, the left flattening roller unit 1 and the right flattening roller unit 2 sleeved on the outside of the square roller shaft shell 5 rotate, the cross section of the square roller shaft shell 5 is square, the cross section of the cavities in the left flattening roller unit 1 and the right flattening roller unit 2 is also square, the flattening roller units are not easy to slip with the square roller shaft shell 5 when the upper flattening roller assembly rotates, and the cavities in the left flattening roller unit 1 and the right flattening roller unit 2 are provided with steel plates, which enhance the deformation resistance of the flattening roller units and further prevent the flattening roller units from slipping with the square roller shaft shell 5. The flattening rollers of the upper flattening roller assembly of the utility model adopt a sectional structure, are arranged by a plurality of left flattening roller units 1 and right flattening roller units 2, are convenient to sleeve on the square roller shaft shell 5 when assembling, the structures of the left flattening roller units 1 are the same, the structures of the right flattening roller units 2 are also the same, the universality of the flattening roller units is improved, when one of the flattening roller units needs to be replaced due to wear or damage, only one flattening roller unit needs to be replaced, and the flattening rollers do not need to be replaced as a whole, the design of the number of patterns and the twisting angle between the two ends makes the patterns of the replaced flattening roller unit and the original flattening roller unit be able to be connected, and replacement is convenient.

[0025] The upper flattening roller assembly of the grass cutting and flattening machine, the flattening roller unit is not directly sleeved on the upper flattening roller shaft, but a polygonal roller shaft shell is fixedly connected outside the upper flattening roller shaft, the flattening roller unit is sleeved on the polygonal roller shaft shell, the cross section of the polygonal roller shaft shell is a regular polygon, a steel plate is arranged on the internal cavity of the flattening roller unit, and slipping between the flattening roller unit and the polygonal roller shaft shell during rotation is prevented; the flattening roller adopts a sectional structure, the structures of the plurality of left flattening roller units are same, the structures of the plurality of right flattening roller units are also same, and the patterns of any two left flattening roller units or right flattening roller units can be connected after butt joint, so that installation and replacement are facilitated, and the cost of replacing the flattening roller is saved.

Claims

1. An upper crushing roller assembly of a hay and straw crushing machine, comprising an upper crushing roller shaft (3) having crushing rollers rotatable with the upper crushing roller shaft (3) arranged on the outside of the upper crushing roller shaft (3), the outer surface of the crushing rollers being provided with a plurality of "chevron" patterns, characterized in that: The flattening roller is composed of a left flattening roller and a right flattening roller, the left flattening roller is composed of at least two same left flattening roller units (1) arranged in series, the right flattening roller is composed of at least two same right flattening roller units (2) arranged in series and symmetric with the left flattening roller units (1), the patterns on the outer surfaces of the left flattening roller units (1) and the right flattening roller units (2) are connected to form a plurality of "person”-shaped patterns; the outer part of the upper flattening roller shaft (3) is fixedly connected with a polygonal roller shaft shell, the polygonal roller shaft shell has a cross section in the shape of a regular polygon and is arranged along the length direction of the upper flattening roller shaft (3), the left flattening roller units (1) and the right flattening roller units (2) are arranged outside the polygonal roller shaft shell, and the middle parts of the left flattening roller units (1) and the right flattening roller units (2) are provided with cavities for the polygonal roller shaft shell to pass through, and the cross section shape of the cavities is the same as that of the polygonal roller shaft shell.

2. The upper crushing roll assembly of a hay and straw crushing machine according to claim 1, characterized in that: At least one face of the cavities in the left flattening roller units (1) and the right flattening roller units (2) is provided with a steel plate for preventing slipping between the flattening roller units and the polygonal roller shaft shell.

3. The upper crushing roll assembly of a hay and straw crushing machine according to claim 1, characterized in that: The cross section of the polygonal roller shaft shell is a square.

4. The upper crushing roll assembly of a hay and straw crushing machine according to claim 1, characterized in that: The two ends of the polygonal roller shaft shell are fixedly connected with a connecting blanking plate (4), the upper flattening roller shaft (3) penetrates through the connecting blanking plate (4) and is fixedly connected with the connecting blanking plate (4), and the connecting blanking plate (4) is connected with a flattening roller fixing disc (6) for pressing the left flattening roller and the right flattening roller to the middle and preventing the left flattening roller and the right flattening roller from falling off the polygonal roller shaft.

5. The upper crushing roll assembly of a hay and straw crushing machine according to claim 1, characterized in that: The plurality of patterns on the surfaces of the left flattening roller units (1) and the right flattening roller units (2) are uniformly distributed along the circumference of the flattening roller, the number of the protrusions and the grooves of the patterns is the number of the edges of the cross section of the polygonal roller shaft shell, and the angle of the protrusions and the grooves of the patterns twisted from one end to the other end of the flattening roller unit is 360° divided by the number of the edges of the cross section of the polygonal roller shaft shell.

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