Stem pulling roller, stem pulling double-roller device and corn harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a stem pulling roller, a stem pulling double-roller device and a corn harvester. The stem pulling roller comprises a roller body assembly, a guide cone, a front mounting seat and a rear mounting seat; the roller body assembly comprises a roller body and a plurality of blades uniformly distributed on the roller body in the circumferential direction, each blade comprises a front inclined section and a rear straight section, the width of the front inclined section is smaller than that of the rear straight section, and the width of the front inclined section is gradually increased from front to back; the guide cone is arranged at the front end of the roller body, and a spiral guide plate is arranged on the guide cone; the front mounting seat is arranged between the roller body assembly and the guide cone, and the rear mounting seat is arranged at the rear end of the roller body assembly. Compared with an existing structure, the gap between the front ends of the left stem pulling roller and the right stem pulling roller after assembly is enlarged, stems are prevented from being blocked at the front end of the harvester, the feeding performance of the stems is improved, the gap between the front ends is large, thick stems can be fed smoothly, adaptability to the stems is better, and frequent adjustment of the gap between the stem pulling rollers is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, specifically, relate to a kind of pull stem roller, pull stem roller device and corn harvester. BACKGROUND

[0002] Pull stem roller as the core component of corn header, it cooperates with the upper ear picking plate to complete corn header's ear picking and pull stem.

[0003] The performance of pull stem roller is related to the reliability and working efficiency of the whole header.

[0004] The pull stem roller on the corn harvester on the market is mainly divided into blade type and blade type, wherein the blade type is mainly 6 or 8 pieces, in order to improve the pull stem capacity, sawtooth structure is increased on the blade, which will lead to serious grass winding of pull stem roller, if not cleaned in time, it will affect the subsequent pull stem, cause the header to be blocked and the stem to be broken, affect the user satisfaction; because the state of corn stem is not consistent, the gap between pull stem rollers needs to be adjusted frequently according to the thickness of corn stem to ensure the harvesting effect, which affects the harvesting efficiency and easily causes user dissatisfaction. SUMMARY

[0005] The purpose of the utility model includes providing a kind of pull stem roller, pull stem roller device and corn harvester, which can solve the above technical problems.

[0006] The embodiment of the utility model can be realized as follows:

[0007] In the first aspect, the utility model provides a kind of pull stem roller,

[0008] Including roller body assembly, guide cone, front mounting seat and rear mounting seat;

[0009] The roller body assembly includes a roller body and a plurality of circumferentially distributed blades on the roller body, the blade includes a front inclined section and a rear straight section, the width of the front inclined section is less than the width of the rear straight section, and from front to back, the width of the front inclined section gradually increases;

[0010] The guide cone is provided at the front end of the roller body, and the guide cone is provided with a spiral guide plate;

[0011] The front mounting seat is arranged between the roller body assembly and the guide cone, and the rear mounting seat is arranged at the rear end of the roller body assembly.

[0012] In the optional embodiment, a plurality of long groove plates connected in sequence around the circumferential direction are uniformly distributed on the roller body, and the side wall plates of adjacent long groove plates abut to form the blade.

[0013] In an optional embodiment, a connecting shaft is connected between the guide cone and the roller body, and the front mounting seat is rotatably mounted on the connecting shaft through a bearing.

[0014] In an optional embodiment, a first connecting hole and a first shaft hole are coaxially arranged on the guide cone, a threaded hole is arranged on the front end of the connecting shaft, the front end of the connecting shaft is inserted into the first shaft hole, and a fixing bolt passing through the first connecting hole is threadedly connected with the threaded hole.

[0015] In an optional embodiment, a second shaft hole and two second connecting holes perpendicular to the second shaft hole are coaxially arranged on the front end of the roller body assembly, the rear end of the connecting shaft is inserted into the second shaft hole, the rear end of the connecting shaft is provided with a third connecting hole coaxial with the second connecting hole, and a fixing connecting piece passes through the two second connecting holes and the third connecting hole to connect the roller body assembly and the connecting shaft.

[0016] In an optional embodiment, the front mounting seat is a cone with a smaller diameter at the front end than at the rear end, the front end of the front mounting seat is connected with the guide cone, and the rear end of the front mounting seat is connected with the roller body assembly.

[0017] In an optional embodiment, a plurality of strong reinforcing ribs are arranged between adjacent blades, the number of the strong reinforcing ribs in each group is equal, and the strong reinforcing ribs are arranged at the rear end of the roller body assembly.

[0018] In an optional embodiment, the number of the strong reinforcing ribs between two adjacent blades is one, two or three.

[0019] In the second aspect, the utility model provides a stem pulling double roller device, it includes two above -mentioned any one of stem pulling roller;

[0020] Two the stem pulling roller pairing uses, and the rotation direction of the guide plate on two the stem pulling roller is opposite;

[0021] From front to back, the gap between two the stem pulling roller gradually reduces in the position corresponding to the front inclined section.

[0022] In the second aspect, the utility model provides a corn harvester, including preceding the stem pulling double roller device.

[0023] The stem pulling roller and the corn harvester provided by the embodiments of the utility model have the following beneficial effects:

[0024] The taper section is arranged on the roller body assembly, and a taper structure with a small diameter at the front end and a large diameter at the rear end is formed, so that compared with the prior structure, the gap at the front end of the left and right straw pulling rollers after assembly is effectively increased, the starting position of straw pulling is moved backward, the straw is prevented from being blocked at the front end of the harvester, the straw feeding property is improved, the gap at the front end is large, thick straw can be smoothly fed, the adaptability to straw is better, and frequent adjustment of the gap between the straw pulling rollers is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0026] Figure 1 A front view of the straw pulling roller provided in the embodiments of the present application is provided.

[0027] Figure 2 A partial sectional view of the straw pulling roller provided in the embodiments of the present application is provided.

[0028] Figure 3 A front view of the roller body assembly of the straw pulling roller provided in the embodiments of the present application is provided.

[0029] Figure 4 A reference drawing of the use state of the straw pulling roller provided in the embodiments of the present application is provided.

[0030] Figure 5 A Figure 4 A-A sectional view.

[0031] Figure legend: 1-cone guide; 2-guide plate; 3-front mounting seat; 4-roller body assembly; 5-blade; 6: strong pull bar; 7-rear mounting seat; 8-connection shaft; 9-rivets; 10-fixing bolt; 11-bearing; 12-front inclined section; 13-rear straight section; 14-gap; 15-long slot plate; 16-straw. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0034] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0037] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0038] The overall structure, working principle and technical effects of the stem pulling roller provided by the present application will be described in detail below through embodiments and in conjunction with the drawings.

[0039] In a first aspect, the present application provides a stem pulling roller, as shown in Figure 1 and Figure 2 The stem pulling roller comprises a roller body assembly 4, a guide cone 1, a front mounting seat 3 and a rear mounting seat 7. The roller body assembly 4 comprises a roller body and a plurality of blades 5 distributed in the circumferential direction of the roller body. The blade 5 comprises a front inclined section 12 and a rear straight section 13. The width of the front inclined section 12 is smaller than the width of the rear straight section 13, and the width of the front inclined section 12 gradually increases from front to back. The guide cone 1 is arranged at the front end of the roller body, and a spiral guide plate 2 is arranged on the guide cone 1. The front mounting seat 3 is arranged between the roller body assembly 4 and the guide cone 1, and the rear mounting seat 7 is arranged at the rear end of the roller body assembly 4.

[0040] In this embodiment, the spiral guide plate 2 guides the stems 16 from the tip of the guide cone 1 to the bottom end, so as to enter between the two roller body assemblies 4, thereby realizing the functions of stem pulling and feeding.

[0041] Specifically, in this embodiment, the spiral directions of the guide plates 2 in the same pair of pull stem rollers are opposite, so that the guide plates 2 on the two guide cones 1 in the same pair of pull stem rollers can always be set in a corresponding manner when rotating.

[0042] In this embodiment, the spirals of the guide plates 2 in the pair of stem-pulling rollers are staggered by 180°. That is, in the same circle, the central angle between the starting points of the two spirals is 180°. With this arrangement, when the two stem-pulling rollers rotate, the guide plate 2 on one stem-pulling roller can be inserted exactly into the middle of the spiral groove formed between adjacent guide plates 2 on the other stem-pulling roller, preventing stem breakage 16, thereby further improving the feeding function and stem-pulling effect of the stem-pulling rollers.

[0043] In this embodiment, as Figure 3 The blade 5 shown includes a front inclined section 12 and a rear straight section 13. When the stem-pulling rollers are used in combination, the gap 14 between the two rollers at the corresponding position of the front inclined section 12 is larger than the gap 14 of stem-pulling rollers in the prior art. This arrangement shifts the starting position of stem pulling backward, preventing the stem from clogging at the front end of the stem-pulling roller and improving the feeding of the stem 16. At the same time, the larger gap 14 at the front end allows for feeding of thicker stems 16, resulting in better adaptability to the stem 16 and avoiding frequent adjustments to the gap 14 of the stem-pulling rollers.

[0044] In use, the roller assembly 4 is rotated onto the corn harvester using the front mounting seat 3 and the rear mounting seat 7.

[0045] In a preferred embodiment, the roller body has a plurality of long groove plates 15 evenly distributed in the circumferential direction and connected sequentially by side wall plates, and the adjacent side wall plates abut against each other to form the blades 5.

[0046] In this embodiment, multiple long groove plates 15 are sequentially spliced ​​around the roller body to form a cylindrical structure, and then welded together to form a whole, resulting in roller assembly 4.

[0047] In this embodiment, the sidewalls of two adjacent long slot plates 15 abut against each other to form blades 5.

[0048] In this embodiment, by connecting the sidewalls at both ends of adjacent long slot plates 15 to form blades 5, the connection area of ​​adjacent long slot plates 15 can be increased, thereby increasing the connection strength between long slot plates 15.

[0049] In an optional embodiment, a first connecting hole is coaxially arranged on the guide cone 1, a second connecting hole is arranged on the roller body assembly 4, and the axes of the first connecting hole and the second connecting hole are perpendicular to each other; further comprising a connecting shaft 8, one end of the connecting shaft 8 is provided with a threaded connecting hole, the threaded connecting hole is arranged corresponding to the first connecting hole, and a fixing bolt 10 is threadedly connected through the first connecting hole and the threaded connecting hole; the end of the roller body assembly 4 has a mounting groove, one end of the connecting shaft 8 has a third connecting hole, and one end of the connecting shaft 8 is inserted into the mounting groove, so that the second connecting hole is coaxial with the third connecting hole.

[0050] In the embodiment, one end of the guide cone 1 is a pointed end, and the other end is a large-diameter end.

[0051] The end of the large-diameter end is provided with an axle groove for cooperating with the connecting shaft 8; the bottom of the axle groove is coaxially provided with a first connecting hole, and the first connecting hole is a through hole penetrating to the pointed end of the guide cone 1.

[0052] In the embodiment, the second connecting hole on the roller body assembly 4 is arranged on the groove wall of the connecting groove, and the second connecting hole is a through hole penetrating through the groove wall of the connecting groove to the outer wall of the roller body assembly 4. Two second connecting holes are arranged on the groove wall of the connecting groove, and the two second connecting holes are coaxial, so that when the connecting groove is not installed, the two second connecting holes can constitute a complete through hole.

[0053] In the embodiment, the third connecting hole is arranged as a through hole, and the hole diameter of the third connecting hole is the same as that of the second connecting hole, which can ensure the stability of the fixing member penetrating through the second connecting hole and the third connecting hole when the connecting shaft 8 and the roller body assembly 4 are fixedly connected.

[0054] In the embodiment, the fixing member is a rivet 9, and through the arrangement of the rivet 9, the connection strength and connection stability of the connecting shaft 8 on the roller body assembly 4 can be ensured, and the outer wall of the roller body assembly 4 is not exposed, so that the roller body assembly 4 has better aesthetic appearance, and the injury caused by the fixing member protruding outside during operation of personnel is avoided.

[0055] In use, the rivet 9 penetrates through the first second connecting hole, the third connecting hole and the second second connecting hole in sequence, and then the connecting shaft 8 is fixed on the roller body assembly 4.

[0056] It can be understood that in the embodiment, the fixing member is a rivet 9, but it is not limited to the rivet 9, and it can also be other fixed connection structures, such as bolt connection.

[0057] It can also be understood that in the present embodiment, the connection between the connecting shaft 8 and the roller body assembly 4 is riveting, but it is not limited to riveting, and it can also be other fixed connection modes, such as welding, clamping, etc., as long as it can realize the fixed connection between the connecting shaft 8 and the roller body assembly 4.

[0058] In the present embodiment, when installing the guide cone 1, the connecting shaft 8 is first inserted into the installation groove, and then the connecting shaft 8 and the roller body assembly 4 are fixedly connected together by the rivet 9 passing through the second connecting hole and the third connecting hole; then the guide cone 1 is sleeved on the connecting shaft 8, the first connecting hole corresponds to the connecting groove at the end of the connecting shaft 8, and the fixing bolt 10 passes through the first connecting hole and is screwed into the threaded connecting hole to fix the guide cone 1 on the connecting shaft 8, and finally the guide cone 1 is completed.

[0059] In an optional embodiment, the front mounting seat 3 is arranged on the connecting shaft 8 through a bearing 11.

[0060] In the present embodiment, the connection between the connecting shaft 8 and the front mounting seat 3 is realized through the bearing 11, which can ensure the normal rotation of the roller body assembly 4 in the case of fixedly arranging the front mounting seat 3, reduce the friction between the connecting shaft 8 and the front mounting seat 3, and improve the service life of the connecting shaft 8 and the front mounting seat 3.

[0061] In an optional embodiment, the front mounting seat 3 is conical, the larger-diameter end of the front mounting seat 3 is connected to the roller body assembly 4, and the smaller-diameter end of the front mounting seat 3 is connected to the guide cone 1.

[0062] In the present embodiment, the front mounting seat 3 is also conical, one end of which has the same diameter as the large-end diameter of the guide cone 1, and the other end has the same diameter as the smaller-diameter end of the conical section of the roller body assembly 4.

[0063] Such a setting can make the guide cone 1 in the straw pulling roller smoothly transition to the roller body assembly 4, reduce the blockage of the straw 16 during feeding, ensure the feeding effect of the straw pulling roller, and also increase the overall aesthetic appearance.

[0064] In an optional embodiment, a group of strong pullers 6 is arranged between adjacent blades 5, the number of each group of strong pullers 6 is equal, and the strong pullers 6 are arranged at the rear end of the roller body assembly 4.

[0065] In the present embodiment, after the strong puller 6 is arranged, the part of the roller body assembly 4 with the strong puller 6 is set as a strong pull section, and the length of the strong pull section is less than the length of the rear straight section 13.

[0066] In the present embodiment, the plate surface of the strong puller 6 is perpendicular to the groove bottom of the long groove plate 15.

[0067] In the embodiment, as shown in Figure 4 and Figure 5 shown, after the rear end of the roller assembly 4 is increased with a strong pull bar, the minimum gap 14 between the two pull rollers is changed from the gap 14 between the blade 5 and the roller body to the gap 14 between the blade 5 and the strong pull section, effectively reducing the gap 14 between the two pull rollers, reducing the slip of the stem 16, improving the pulling ability, and improving the harvesting efficiency.

[0068] As shown in Figure 5 In the embodiment, one strong pull bar 6 is arranged between every two adjacent blades 5, and the distance between the strong pull bar 6 and the two adjacent blades 5 is equal. The strong pull bar 6 on one pull roller is arranged one-to-one with the blade 5 on the other pull roller, and the strong pull bar 6 is located at the rear end of the roller assembly 4.

[0069] The minimum gap 14 between the two pull rollers is changed from the gap 14 between the blade 5 and the roller body to the gap 14 between the blade 5 and the strong pull bar 6, effectively reducing the gap 14 between the two pull rollers, reducing the slip of the stem 16, improving the pulling ability, and improving the harvesting efficiency.

[0070] In the optional embodiment, two or three strong pull bars 6 are arranged between every two adjacent blades 5, and the number of strong pull bars 6 arranged between every two adjacent blades 5 is equal to ensure the balance stability when the pull roller rotates. The blade 5 on one pull roller corresponds to the two or three strong pull bars 6 on the other pull roller, which can still reduce the gap 14 between the two pull rollers, reduce the slip of the stem 16, improve the pulling ability, and improve the harvesting efficiency.

[0071] In the embodiment, the strong pull bar 6 is arranged one-to-one with the blade 5.

[0072] Specifically, in the embodiment, a strong pull bar 6 is arranged on each long groove plate 15, as shown in Figure 5 .

[0073] Specifically, in the embodiment, the strong pull bar 6 is welded with the blade 5 to form a whole, and then the blade 5 is welded into a cylinder to constitute the roller assembly 4.

[0074] It can be understood that in the embodiment, the strong pull bar 6 is arranged on each long groove plate 15, which can also be arranged on only part of the long groove plate 15, such as one blade 5 or multiple blades 5, and the interval can be the same. One, two or three strong pull bars 6 can be arranged between adjacent blades 5, and the number of strong pull bars 6 can be the same.

[0075] In the embodiment, the distance from the strong pull bar 6 to the blade 5 is the same.

[0076] Specifically, in the present embodiment, the strong pull bar 6 is in the middle of the width direction of the long groove plate 15, so that the strong pulling effect can be better guaranteed.

[0077] In a second aspect, the utility model provides a corn harvester, including any preceding embodiment of the pull stem roller.

[0078] The beneficial effects of the pull stem roller and the corn harvester provided in the embodiments of the utility model include:

[0079] The taper section is arranged on the roller body assembly 4, a taper structure with a small front end diameter and a large rear end diameter is formed, compared with the prior art, the gap 14 at the front end of the left and right pull stem rollers after assembly is effectively increased, the starting position of the stem pulling is moved backward, stem 16 is prevented from being blocked at the front end of the harvester, the feeding property of the stem 16 is improved, the front end gap 14 is large, thick stem 16 can also be smoothly fed, the adaptability to the stem 16 is better, and frequent adjustment of the pull stem roller gap 14 is avoided.

[0080] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A stem-pulling roller, characterized in that, Includes roller assembly, guide cone, front mounting base and rear mounting base; The roller assembly includes a roller body and a plurality of blades evenly distributed on the roller body in a circumferential direction. Each blade includes a front inclined section and a rear straight section. The width of the front inclined section is smaller than the width of the rear straight section, and the width of the front inclined section gradually increases from front to back. The guide cone is located at the front end of the roller body, and a spiral guide plate is provided on the guide cone; The front mounting seat is located between the roller assembly and the guide cone, and the rear mounting seat is located at the rear end of the roller assembly.

2. The stem-pulling roller according to claim 1, characterized in that, The roller body has multiple long groove plates that are sequentially connected around its circumference. The sidewalls of adjacent long groove plates abut each other to form the blades.

3. The stem-pulling roller according to claim 2, characterized in that, A connecting shaft connects the guide cone and the roller body, and the front mounting seat is rotatably mounted on the connecting shaft via a bearing.

4. The stem-pulling roller according to claim 3, characterized in that, The guide cone is coaxially provided with a first connecting hole and a first shaft hole. The front end of the connecting shaft is provided with a threaded hole. The front end of the connecting shaft is inserted into the first shaft hole, and a fixing bolt passing through the first connecting hole is threadedly connected to the threaded hole.

5. The stem-pulling roller according to claim 3, characterized in that, The front end of the roller assembly is coaxially provided with a second shaft hole and two second connecting holes perpendicular to the second shaft hole. The rear end of the connecting shaft is inserted into the second shaft hole. The rear end of the connecting shaft is provided with a third connecting hole coaxial with the second connecting hole. The fixing connector passes through the two second connecting holes and the third connecting hole to connect the roller assembly and the connecting shaft.

6. The stem-pulling roller according to claim 1, characterized in that, The front mounting base is a cone with a front diameter smaller than the rear diameter. The front end of the front mounting base is connected to the guide cone, and the rear end of the front mounting base is connected to the roller assembly.

7. The stem-pulling roller according to any one of claims 1-6, characterized in that, A set of strong tension ribs is provided between adjacent blades, and the number of strong tension ribs in each set is equal. The strong tension ribs are located at the rear end of the roller assembly.

8. The stem-pulling roller according to claim 7, characterized in that, The number of tensile ribs between two adjacent blades is one, two, or three.

9. A stem-pulling roller device, characterized in that, Includes the stem-pulling rollers as described in any one of claims 1-8; The two stem-pulling rollers are used in pairs, and the guide plates on the two stem-pulling rollers rotate in opposite directions; From front to back, corresponding to the front inclined section, the gap between the two pulling rollers gradually decreases.

10. A corn harvester, characterized in that, Includes the stem-pulling roller device as described in claim 9.

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