Threshing arch tooth of harvester

Abstract

The utility model belongs to the technical field of harvesters, and particularly relates to a harvester threshing arch tooth which comprises a roller local part, an arch tooth body is arranged above the roller local part and is of an inverted-U-shaped structure, limiting steps are fixed to the two bottom foot parts of the arch tooth body, fixing bottom feet are fixed to the lower surfaces of the limiting steps, and the limiting steps are fixed to the lower surfaces of the fixing bottom feet. Limiting holes are formed in the fixing bottom feet. By arranging the fixing block and the limiting assembly, the fixing block can achieve pre-fixing of the bow tooth body, during installation, fixing can be achieved only by enabling the bow tooth body and the fixing block to be close to each other and extrude each other, the overall fixing mode is simple and convenient, and the inconvenience that two bolts need to be used for fixing in the traditional installation process is changed; the installation efficiency is improved; and by arranging a spring piece, a fastening rotating rod, a nut and a gasket, the stability and reliability of fixing the arch tooth main body on the local upper surface of the roller are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of harvesters, in particular to a threshing bow tooth of a harvester. Background Art

[0002] The harvester threshing bow teeth are installed on the threshing drum of the harvester. There is a screen on the periphery of the drum. The ears of crops are squeezed and rubbed during the relative movement between the drum and the screen, causing the grains on the ears to fall off, thus realizing the threshing function.

[0003] For example, the Chinese patent with the announcement number CN202068764U discloses a threshing bow tooth for a harvester, which includes two sides, the ends of the sides are provided with connecting threads, the roots of the connecting threads are provided with a limited step, and the characteristic is that two convex angles are provided at the intersection of the two sides. With this technical solution, two convex angles are provided at the intersection of the two sides of the threshing bow tooth for a harvester, and the ears of crops will be squeezed and rubbed twice during the threshing process, so the threshing effect is better and its service life is increased.

[0004] This patent has some disadvantages when used, such as: the bow teeth in this patent are fixed to the fixed bottom plate by bolts. During the threshing of grains, the bolts are easily loosened due to the continuous rotation of the drum and the collision with the grains, so the bow teeth need to be repeatedly inspected and fixed by humans after a period of use. The whole operation process is time-consuming and laborious. In addition, since the bow teeth are installed and fixed by bolts, the bow teeth in this patent include two fixed roots. When installing a large number of bow teeth on the drum, the overall engineering workload is large, and the installation and disassembly are extremely time-consuming and labor-intensive. In view of this, we propose a harvester threshing bow tooth. Utility Model Content

[0005] The utility model aims to provide a threshing bow tooth for a harvester to solve the problems raised in the above-mentioned background technology.

[0006] In view of this, the utility model provides a harvester threshing bow tooth, comprising:

[0007] A drum part, a bow tooth body is arranged above the drum part, the bow tooth body is an inverted U-shaped structure, two foot parts of the bow tooth body are fixed with limited steps, the lower surface of the limited step is fixed with a fixed foot, and the fixed foot is provided with a limited hole;

[0008] A fixed block, the fixed block is arranged below a part of the drum, the fixed block is provided with a socket for accommodating two fixed feet, the fixed feet are plugged and matched with the corresponding sockets, and a slide groove is provided in the inner cavity of the fixed block and at the inner side of the socket;

[0009] Two limit assemblies, which are symmetrically arranged and respectively located in two slide grooves, and are used to constrain and fix the bow tooth body;

[0010] A spring sheet is slidably arranged on the bow tooth body, and the spring sheet is in an inverted V-shaped structure. A fastening rotary rod is arranged directly above the spring sheet, and the bottom end of the fastening rotary rod passes through the spring sheet, the roller part and the fixed block in sequence and extends to the bottom, and a nut is threadedly connected to the bottom of the fastening rotary rod.

[0011] In the present technical scheme, a fixing block is provided and two limiting components are used to constrain the corresponding fixing feet, so that the fixing block can pre-fix the bow tooth body. During installation, the operator only needs to squeeze the bow tooth body and the fixing block close to each other to achieve fixation. The overall fixing method is relatively simple and convenient, which changes the inconvenience of fixing with two bolts in the traditional installation process and improves the installation efficiency. By providing a spring sheet, a tightening rod, a nut and a gasket, the tightening rod and the nut cooperate to squeeze the spring sheet, and then the spring sheet generates an extrusion force on the bow tooth body and the limiting step, thereby further improving the stability and reliability of fixing the bow tooth body on the local upper surface of the drum. Moreover, since the installer only needs to rotate a single nut, the overall installation and disassembly method of the device is extremely convenient and time-saving.

[0012] In the above technical solution, further, the limit assembly includes:

[0013] A movable plate, the movable plate is slidably installed in the slide groove, a limiting block is fixed on the side of the movable plate close to the socket, the limiting block is plugged into and matched with the limiting hole on the fixed base on the corresponding side, and a return spring is symmetrically arranged on the side of the movable plate away from the socket, and the two ends of the return spring are respectively fixed to the side wall of the movable plate and the inner wall of the slide groove.

[0014] In the present technical solution, by providing a limit assembly, fast restraint and release of the fixed foot is achieved, which greatly saves the overall installation efficiency of the device.

[0015] In the above technical solution, further, the cross section of the limit block is a right-angled trapezoidal structure.

[0016] In the above technical solution, further, a guiding inclined surface is provided on the lower surface of the fixed foot near the inner edge, and the inclined surface of the limit block is movably matched with the guiding inclined surface.

[0017] In the above technical solution, further, one end of the movable plate passes through the slide groove and extends to the outside, and a rounded corner is provided at the edge of one end of the movable plate located at the outside.

[0018] In the above technical solution, further, a gasket is provided between the top protrusion of the fastening rotary rod and the upper surface of the spring sheet, and the gasket is plug-fitted with the fastening rotary rod.

[0019] In the technical solution, by providing a tightening rotary rod, it is prevented that the extrusion force generated by the tightening rotary rod on the spring sheet causes damage to the spring sheet, thereby playing a certain protective role on the spring sheet.

[0020] In the above technical solution, further, the entire spring sheet is an integrally formed structure.

[0021] In this technical solution, the stability of the overall structure of the spring sheet is ensured through integral molding.

[0022] The beneficial effects of the utility model are:

[0023] 1. The harvester threshing bow teeth are provided with a fixed block and two limit assemblies are used to constrain the corresponding fixed feet, so that the fixed block can pre-fix the bow tooth body. During installation, the operator only needs to squeeze the bow tooth body and the fixed block close to each other to achieve fixation. The overall fixing method is relatively simple and convenient, which changes the inconvenience of fixing with two bolts in the traditional installation process and improves the installation efficiency.

[0024] 2. The harvester threshing bow teeth are provided with spring sheets, fastening rotary rods, nuts and gaskets, and the fastening rotary rods and nuts cooperate to squeeze the spring sheets, and then the spring sheets generate squeezing force on the bow tooth body and the limiting step, thereby further improving the stability and reliability of fixing the bow tooth body on the local upper surface of the drum. In addition, since the installer only needs to rotate a single nut, the overall installation and disassembly method of the device is extremely convenient and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the bow teeth in the utility model;

[0027] Figure 3 It is a cross-sectional schematic diagram of the fixing block in the utility model;

[0028] Figure 4 It is a schematic diagram of the structure in which the limiting block and the limiting hole cooperate with each other in the utility model.

[0029] The symbols in the figure are:

[0030] 1. Drum part; 2. Bow tooth body; 3. Limiting step; 4. Fixed foot; 5. Limiting hole; 6. Guide slope; 7. Fixed block; 8. Plug hole; 9. Slide groove; 10. Moving plate; 11. Limiting block; 12. Reset spring; 13. Spring sheet; 14. Fastening rod; 15. Nut; 16. Gasket. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0032] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0035] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0036] Embodiment 1:

[0037] See also Figure 1 - Figure 4 As shown, this embodiment provides a harvester threshing bow tooth, comprising:

[0038] A drum part 1, a bow tooth body 2 is arranged above the drum part 1, the bow tooth body 2 is an inverted U-shaped structure, two bottom feet of the bow tooth body 2 are fixed with limit steps 3, the lower surface of the limit step 3 is fixed with a fixed foot 4, and a limit hole 5 is provided on the fixed foot 4;

[0039] The fixing block 7 is arranged below the drum part 1, and is provided with a socket 8 for accommodating two fixing feet 4 to be inserted, the fixing feet 4 are plugged into and matched with the corresponding sockets 8, and a slide groove 9 is provided in the inner cavity of the fixing block 7 and at the inner side of the socket 8;

[0040] Two limit assemblies, which are symmetrically arranged and respectively located in two slide grooves 9, and are used to constrain and fix the bow tooth body 2;

[0041] The spring sheet 13 is slidably arranged on the bow tooth body 2, and the spring sheet 13 is in an inverted V-shaped structure. A fastening rotary rod 14 is arranged directly above the spring sheet 13, and the bottom end of the fastening rotary rod 14 passes through the spring sheet 13, the drum part 1 and the fixed block 7 in sequence and extends to the bottom, and the bottom of the fastening rotary rod 14 is threadedly connected with a nut 15.

[0042] Among them, the working principle of this device during installation and use is as follows:

[0043] First, align the two fixed feet 4 at the bottom of the bow tooth body 2 with the mounting holes on the drum part 1 and insert downwards. Then, the operator aligns the two insertion holes 8 on the fixed block 7 at the bottom of the drum part 1 with the two fixed feet 4 at the bottom of the bow tooth body 2 and presses hard. At this time, the fixed feet 4 are inserted into the corresponding insertion holes 8 and the corresponding limit assembly is squeezed. When the fixed block 7 and the bow tooth body 2 are installed, the installer will hear a "click" sound, which means that the limit assembly has been fully inserted into the corresponding limit hole 5 and reset.

[0044] When the limit assembly is working, as the fixed base 4 continuously moves downward, the guiding inclined surface 6 at the bottom of the fixed base 4 contacts the inclined surface of the limit block 11 and squeezes it, the limit block 11 is squeezed and pushes the movable plate 10 to retract toward the inner cavity of the slide groove 9, at this time, the return spring 12 in the inner cavity of the slide groove 9 is squeezed and is in a compressed state, as the fixed base 4 is further inserted into the insertion hole 8, when the limit block 11 reaches the position of inserting into the limit hole 5, the multiple return springs 12 begin to restore their deformation under the action of elasticity, and push the movable plate 10 to slide toward one side of the fixed base 4, and the movable plate 10 drives the limit block 11 to be pushed into the limit hole 5, and due to the rapid reset of the limit block 11, a "click" sound will be emitted in the fixed block 7, at this time, the two limit blocks 11 respectively realize limit constraints on the corresponding fixed base 4, and the bow tooth body 2 is stably fixed on the upper surface of the drum part 1 under the action of the fixed block 7;

[0045] Then the installer holds the fastening rod 14 and inserts the gasket 16 into the cylindrical part of the fastening rod 14, then aligns it with the through hole on the spring sheet 13, and passes it downward through the drum part 1 and the fixing block 7 in turn. At this time, the bottom end of the fastening rod 14 is exposed from the lower surface of the fixing block 7. Then the installer aligns the nut 15 with the bottom end of the fastening rod 14 and tightens it. At this time, the fastening rod 14 is forced to move downward and squeeze the spring sheet 13. Since the spring sheet 13 has a certain elasticity, the two supporting feet of the spring sheet 13 squeeze the surface wall of the bow tooth body 2 and the limiting step 3 downward, so that the bow tooth body 2 can be more stably fixed on the drum part 1. At this time, the installation of the bow tooth body 2 has been completed; when the bow tooth body 2 needs to be disassembled and replaced, the principle is the same as above, and the steps can be reversed.

[0046] By setting a fixing block 7 and utilizing two limiting components to constrain the corresponding fixing feet 4, the fixing block 7 can be pre-fixed to the bow tooth body 2. During installation, the operator only needs to squeeze the bow tooth body 2 and the fixing block 7 close to each other to achieve fixation. The overall fixing method is relatively simple and convenient, which changes the inconvenience of fixing with two bolts in the traditional installation process and improves the installation efficiency. By setting a spring sheet 13, a tightening rod 14, a nut 15 and a gasket 16, the tightening rod 14 and the nut 15 cooperate to squeeze the spring sheet 13, and then the spring sheet 13 generates an extrusion force on the bow tooth body 2 and the limiting step 3, thereby further improving the stability and reliability of fixing the bow tooth body 2 on the upper surface of the drum part 1. Moreover, since the installer only needs to rotate a single nut 15, the overall installation and disassembly method of the device is extremely convenient and time-saving.

[0047] Embodiment 2:

[0048] This embodiment provides a harvester threshing bow tooth, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the limit assembly includes:

[0049] The movable plate 10 is slidably installed in the slide groove 9. A limit block 11 is fixed on the side of the movable plate 10 close to the insertion hole 8. The limit block 11 is plugged into and matched with the limit hole 5 on the fixed foot 4 on the corresponding side. A return spring 12 is symmetrically arranged on the side of the movable plate 10 away from the insertion hole 8. The two ends of the return spring 12 are respectively fixed to the side wall of the movable plate 10 and the inner wall of the slide groove 9;

[0050] The cross section of the limit block 11 is a right-angled trapezoidal structure;

[0051] A guide slope 6 is provided on the lower surface of the fixed foot 4 and near the inner edge, and the inclined surface of the limit block 11 is movably matched with the guide slope 6;

[0052] One end of the moving plate 10 passes through the slide groove 9 and extends to the outside, and a rounded corner is provided at the edge of the end of the moving plate 10 located at the outside.

[0053] Among them, when the limiting assembly is working, as the fixed base 4 is continuously displaced downward, the guiding inclined surface 6 at the bottom of the fixed base 4 contacts the inclined surface of the limiting block 11 and squeezes it. The limiting block 11 is squeezed and pushes the movable plate 10 to retract toward the inner cavity of the slide groove 9. At this time, the return spring 12 in the inner cavity of the slide groove 9 is squeezed and is in a compressed state. As the fixed base 4 is further inserted into the socket 8, when the limiting block 11 reaches the position of being inserted into the limiting hole 5, the multiple return springs 12 begin to restore their deformation under the action of elasticity and push the movable plate 10 toward the fixed base 4. One side of the fixed base 4 slides, and the movable plate 10 drives the limit block 11 to be pushed into the limit hole 5, and due to the rapid resetting of the limit block 11, a "click" sound is emitted in the fixed block 7. At this time, the two limit blocks 11 respectively realize limit constraints on the corresponding fixed base 4, and the bow tooth body 2 is stably fixed on the upper surface of the drum part 1 under the action of the fixed block 7; when contacting the constraint on the fixed base 4, the operator only needs to pinch the two movable plates 10 and apply force toward the center. At this time, the limit block 11 is retracted from the corresponding limit hole 5 and no longer constrains the fixed base 4.

[0054] By providing the limit assembly, the fixed foot 4 can be quickly constrained and released, which greatly saves the overall installation efficiency of the device.

[0055] Embodiment 3:

[0056] The present embodiment provides a harvester threshing bow tooth, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: a gasket 16 is arranged between the top protrusion of the fastening rotary rod 14 and the upper surface of the spring sheet 13, and the gasket 16 is plugged into and matched with the fastening rotary rod 14.

[0057] The fastening rotary rod 14 is provided to prevent the extrusion force generated by the fastening rotary rod 14 on the spring sheet 13 from damaging the spring sheet 13 , thereby providing a certain degree of protection for the spring sheet 13 .

[0058] Embodiment 4:

[0059] This embodiment provides a harvester threshing bow tooth, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the entire spring sheet 13 is an integrally formed structure.

[0060] The stability of the overall structure of the spring piece 13 is ensured by integral molding.

[0061] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A harvester threshing bow tooth, characterized in that: include: A drum part (1), a bow tooth body (2) is arranged above the drum part (1), the bow tooth body (2) is in an inverted U-shaped structure, two foot parts of the bow tooth body (2) are fixed with limiting steps (3), the lower surface of the limiting step (3) is fixed with a fixed foot (4), and the fixed foot (4) is provided with a limiting hole (5); A fixed block (7), the fixed block (7) being arranged below the drum part (1), the fixed block (7) being provided with a socket (8) for accommodating two fixed feet (4) to be inserted, the fixed feet (4) being plug-fitted with the corresponding sockets (8), and a slide groove (9) being provided in the inner cavity of the fixed block (7) and located at the inner side of the sockets (8); Two limit assemblies, which are symmetrically arranged and respectively located in two slide grooves (9) and are used to constrain and fix the bow tooth body (2); A spring sheet (13) is slidably arranged on the bow tooth body (2), the spring sheet (13) is in an inverted V-shaped structure, a fastening rotary rod (14) is arranged directly above the spring sheet (13), and the bottom end of the fastening rotary rod (14) passes through the spring sheet (13), the roller part (1) and the fixing block (7) in sequence and extends to the bottom, and a nut (15) is threadedly connected to the bottom of the fastening rotary rod (14).

2. A harvester threshing bow tooth according to claim 1, characterized in that: The limiting component comprises: A movable plate (10), the movable plate (10) is slidably installed in the slide groove (9), a limiting block (11) is fixed on the side of the movable plate (10) close to the insertion hole (8), the limiting block (11) is plugged into and matched with a limiting hole (5) on the fixed base foot (4) on the corresponding side, and a return spring (12) is symmetrically arranged on the side of the movable plate (10) away from the insertion hole (8), and the two ends of the return spring (12) are respectively fixed to the side wall of the movable plate (10) and the inner wall of the slide groove (9).

3. A harvester threshing bow tooth according to claim 2, characterized in that: The cross section of the limiting block (11) is in the shape of a right-angled trapezoid.

4. A harvester threshing bow tooth according to claim 3, characterized in that: A guide slope (6) is provided on the lower surface of the fixed foot (4) near the inner edge, and the inclined surface of the limit block (11) is movably matched with the guide slope (6).

5. A harvester threshing bow tooth according to claim 4, characterized in that: One end of the movable plate (10) passes through the slide groove (9) and extends to the outside, and a rounded corner is provided at the edge of the end of the movable plate (10) located at the outside.

6. A harvester threshing bow tooth according to claim 1, characterized in that: A gasket (16) is provided between the top protrusion of the fastening rotary rod (14) and the upper surface of the spring sheet (13), and the gasket (16) is plug-fitted with the fastening rotary rod (14).

7. The threshing bow tooth of a harvester according to claim 1, characterized in that: The entire spring sheet (13) is an integrally formed structure.

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