Smashing shaft of straw smashing and bundling machine and bundling machine using smashing shaft

Abstract

The utility model provides a smashing shaft of straw smashing and bundling machine and a bundling machine using the smashing shaft, the smashing shaft comprises a shaft rod, a plurality of smashing cutters, an end fixing plate and 3-7 fan blades, the shaft rod comprises a power input end and a fan fixing end; the crushing cutters are evenly distributed on the circumference of the middle of the shaft rod, the fan blade is installed at the fan fixing end of the shaft rod, the end fixing plate is connected with the fan blade and the shaft rod, the fan blade is of an integrally-formed structure, and an integrally-formed cross-shaped protruding belt structure is arranged on the front face of the fan blade. According to the smashing shaft of the straw smashing and bundling machine and the bundling machine using the smashing shaft, through the integral design of the fan blades, the deformation resistance of the fan blades in the working process can be greatly improved, due to the fact that the fan blades are of the integral structure, the fan blades are not prone to breakage, the service life of the smashing shaft is greatly prolonged, and the straw smashing and bundling machine is suitable for popularization and application. And the maintenance frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a crushing shaft of a straw crushing and baling machine and a baling machine using the same. Background Art

[0002] With the improvement of the degree of agricultural mechanization and planting technology, the straw after the autumn harvest of the original crops was harvested by manpower or burned to feed back the farmland; now, a straw crushing and baling machine is more often used for baling, and then it can be used for secondary utilization such as fermentation. Such measures can greatly improve the utilization rate of straw and also contribute to the improvement of the level of agricultural modernization.

[0003] Among them, the crushing shaft in the existing straw crushing and baling machine is a key working component. For example, the patent publication number CN118556517A, the invention name is the straw picking and crushing mechanism of the straw baling machine, which discloses a spiral crushing and conveying cutter roller 4, and the fan blades 5-1 on it are spliced together by welding multiple steel plates (refer to Figure 1 ). Due to the welding connection method, a continuous crystal phase structure cannot actually be formed on the metal connection surface at the welding position, so the mechanical properties of the welding position are different from those of other positions of the fan blade. Exactly speaking, the mechanical properties of the welding position are greatly reduced compared with those of other positions of the fan blade. This also makes the welding position the weakest link of the fan blade and prone to damage. During the operation of the fan blade, the fan blade bears different torques and centrifugal forces due to different distances from the rotation axis in the circumferential direction. Especially when encountering foreign objects (such as stones, glass, iron nails, etc.), the impact on the fan blade can easily cause the welding position to break. Summary of the Utility Model

[0004] The technical problem to be solved by the embodiments of the utility model is to provide a crushing shaft of a straw crushing and baling machine and a baling machine using the same, so as to solve the problem that the fan blades on the crushing shaft of the existing straw baling machine are prone to breakage.

[0005] To solve the above technical problem, the utility model provides a crushing shaft of a straw crushing and baling machine, which includes a shaft rod, several crushing knives, end fixing plates and 3-7 fan blades. The shaft rod includes a power input end and a fan fixing end; the crushing knives are evenly distributed on the circumference of the middle part of the shaft rod, the fan blades are installed at the fan fixing end of the shaft rod, the end fixing plates are connected to the fan blades and the shaft rod, the fan blades are of an integrally formed structure, and an integrally formed cross-shaped raised belt structure is arranged on the front surface of the fan blades.

[0006] The fan blades and the raised belt structure thereon are integrally formed by forging.

[0007] The blower blade is made of 40Cr structural steel.

[0008] The blower blade includes a first part and a second part. The first part is connected to the shaft rod, and the second part is connected to the first part. An included angle between 150° and 175° is formed when the first part and the second part are connected. The raised belt structure is formed on the included angle surface of the first part and the second part.

[0009] The width of the first part is smaller than that of the second part, but the length of the first part is greater than that of the second part. An approximately trapezoidal shape is formed after the first part and the second part are connected.

[0010] The cross-shaped raised belt structure includes a longitudinal belt and a transverse belt. The longitudinal belt is arranged along the connection position of the first part and the second part; the transverse belt is arranged transversely along the first part and the second part and extends to the edge of the first part.

[0011] The end of the transverse belt and the first part are welded and connected to the shaft rod together.

[0012] A notch arranged transversely is further provided on the outer side of the root of the first part for welding with the end fixing plate.

[0013] A raised block is further provided in the middle of the notch; corresponding to the raised block, a mounting hole is provided on the end fixing plate. When the end fixing plate is installed with the blower blade, the raised block is inserted into the mounting hole.

[0014] The end fixing plate is vertically connected to the shaft rod and the first part.

[0015] When the number of the blower blades is 5, the shape of the end fixing plate is a ring-shaped main body with five evenly protruding stars in five directions, and a shaft hole for connecting with the shaft rod is provided in the middle.

[0016] The transverse belt is located on the side of the first part away from the end fixing plate.

[0017] The crushing knives are arranged spirally on the circumference of the shaft rod.

[0018] The present utility model further provides a baler using the above-mentioned crushing shaft.

[0019] For the crushing shaft of the straw crushing baler provided by the present utility model and the baler using the same, through the integral design of the blower blade, the anti-deformation ability of the blower blade during operation can be greatly improved, and due to the use of the integral structure, it is not easy to break, thereby greatly prolonging the service life of the crushing shaft and reducing the maintenance frequency. Description of the Drawings

[0020] Figure 1 It is a schematic structural view of the crushing shaft described in the background art.

[0021] Figure 2 It is a schematic structural view of the crushing shaft according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural view of the crushing shaft according to an embodiment of the present invention.

[0023] Figure 4 It is an exploded schematic structural view of the crushing shaft according to an embodiment of the present invention.

[0024] Figure 5 It is a schematic structural view of the connection between the fan blade and the end fixing plate according to an embodiment of the present invention.

[0025] Figure 6 It is a schematic structural view of the fan blade according to an embodiment of the present invention.

[0026] Figure 7 It is a schematic structural view of the fan blade according to an embodiment of the present invention.

[0027] Figure 8 It is a schematic structural view of the end fixing plate according to an embodiment of the present invention.

[0028] In the figure:

[0029] 1 Shaft rod; 2 Fan blade; 3 End fixing plate; 4 Crushing knife;

[0030] 21 First part; 22 Second part; 23 Raised belt structure; 231 Longitudinal belt; 232 Transverse belt; 24 Notch; 25 Raised block;

[0031] 31 Mounting hole; 32 Shaft hole. Detailed implementation manners

[0032] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] As Figure 2-8 shown, this utility model provides a crushing shaft of a straw crushing and baling machine, which includes a shaft rod 1, a plurality of crushing knives 4, end fixing plates 3 and 5 fan blades 2. The shaft rod 1 includes a power input end and a fan fixing end; the crushing knives are evenly distributed on the circumference of the middle part of the shaft rod 1, the fan blades 2 are installed at the fan fixing end of the shaft rod 1, the end fixing plates are connected to the fan blades and the shaft rod, the fan blades 2 are of an integrally formed structure, and a cross-shaped raised belt structure 23 is integrally formed on the front surface of the fan blades 2. By means of the cross-shaped raised belt structure 23, the mechanical properties of the fan blades 2 are greatly enhanced, so that the fan blades 2 can withstand repeated vibrations and collisions caused by foreign objects, the mechanical strength is improved, and the risks of damage and breakage are reduced.

[0036] The fan blades 2 and the raised belt structure thereon are integrally formed by forging, specifically by forging multiple times with a die, and heat treatment can be carried out according to the usage situation after forging is completed.

[0037] The fan blades 2 are made of 40Cr structural steel and have good mechanical properties.

[0038] The fan blades 2 include a first part 21 and a second part 22. The first part is connected to the shaft rod, and the second part 22 is connected to the first part 21. An included angle between 150° and 175° is formed between the first part 21 and the second part 22, and the raised belt structure is formed on the included angle surface of the first part and the second part;

[0039] The width of the first part 21 is smaller than the width of the second part 22, but the length of the first part 21 is greater than the length of the second part 22. After the first part 21 and the second part 22 are connected, an approximate trapezoidal shape is formed.

[0040] The cross-shaped raised belt structure 23 includes a longitudinal belt 231 and a transverse belt 232. The longitudinal belt 231 is arranged along the connection position of the first part 21 and the second part 22. The transverse belt 232 is arranged transversely along the first part 21 and the second part 22 and extends to the edge of the first part 21. The transverse belt 232 extends to the edge of the first part 21 so that it can be welded to the shaft rod 1. In this way, while improving the integrity of the fan blade, the torsional resistance performance of the fan blade is also improved. By fixedly connecting the transverse belt 232 to the shaft rod 1, the mechanical strength of the entire fan blade is improved in the circumferential direction.

[0041] The end of the transverse belt 232 and the first part 231 are welded and connected to the shaft rod 1. At this time, the edges of the first part 21 and the transverse belt 232 form a T-shaped structure. Welding the first part 21 and the transverse belt 232 together to the shaft rod 1 can make the fan blade have better torsional resistance performance.

[0042] A notch 24 arranged transversely is also provided on the outer side edge of the root of the first part 21 for welding with the end fixing plate 3. The end fixing plate 3 is usually of a special-shaped shape. The center of the end fixing plate 3 is vertically welded and connected to the end of the shaft rod 1. The outer side edge notch of the first part is vertically welded to the surface of the end fixing plate 3.

[0043] A raised block 25 is also provided in the middle of the notch 24. Corresponding to the raised block 25, a mounting hole 31 is provided on the end fixing plate. When the end fixing plate 3 is installed with the fan blade, the raised block 25 is inserted into the mounting hole 31.

[0044] The end fixing plate 3 is perpendicularly connected to the shaft rod 1 and the first part 21, so that the end fixing plate 3, the shaft rod 1 and the fan blade 2 form a three-dimensional structure.

[0045] When the number of the fan blades 2 is 5, the shape of the end fixing plate 3 is a main body in a ring shape and evenly protrudes in five directions to form a five-star shape, and there is a shaft hole 32 connected to the shaft rod in the middle.

[0046] The transverse belt is located on the side of the first part away from the end fixing plate.

[0047] The crushing knives are arranged in a spiral shape on the circumference of the shaft rod 1.

[0048] The present utility model also provides a baler, which uses the above-mentioned crushing shaft. This crushing shaft can usually be installed on a secondary crushing mechanism. The crushed straw is blown downstream by the fan at the end, so as to facilitate the baling of the baler.

[0049] The shredding shaft of the straw shredding and baling machine provided by the present utility model and the baling machine using the same can greatly improve the anti-deformation ability of the fan blade 2 during operation through the integral design of the fan blade 2. Moreover, due to the use of an integral structure, it is not easy to break, thus greatly extending the service life of the shredding shaft and reducing the maintenance frequency.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0051] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A crushing shaft of a straw crushing baler, comprising a shaft rod, a plurality of crushing knives, an end fixing plate and 3-7 fan blades, characterized in that: The shaft includes a power input end and a fan fixed end; the crushing knives are evenly distributed on the circumference of the middle part of the shaft, the fan blades are installed on the fan fixed end of the shaft, the end fixing plate is connected to the fan blades and the shaft, the fan blades are an integrally formed structure, and an integrally formed cross-shaped raised belt structure is provided on the front side of the fan blades.

2. The pulverizing shaft according to claim 1, characterized in that: The fan blades and the raised belt structure thereon are formed by one-piece forging; The fan blades are made of 40Cr structural steel.

3. The pulverizing shaft according to claim 1, characterized in that: The fan blade comprises a first part and a second part, the first part is connected to the shaft, and the second part is connected to the first part, wherein the first part and the second part are connected to form an angle between 150-175 degrees, and the raised belt structure is formed on the angle surface between the first part and the second part; The width of the first part is smaller than the width of the second part, but the length of the first part is larger than the length of the second part. The first part and the second part are connected to form an approximately trapezoidal shape.

4. The pulverizing shaft according to claim 3, characterized in that: The cross-shaped raised band structure comprises a longitudinal band and a transverse band, wherein the longitudinal band is arranged along the connecting position of the first part and the second part; the transverse band is arranged along the transverse direction of the first part and the second part and extends to the edge of the first part.

5. The pulverizing shaft according to claim 4, characterized in that: The ends of the lateral strip are connected to the shaft together with the first portion by welding.

6. The pulverizing shaft according to claim 5, characterized in that: A notch arranged along the transverse direction is also provided on the outer side of the root of the first part so as to be welded with the end fixing plate; A protruding block is also provided in the middle of the notch; corresponding to the protruding block, a mounting hole is provided on the end fixing plate, and when the end fixing plate and the fan blade are installed, the protruding block is inserted into the mounting hole.

7. The pulverizing shaft according to claim 5, characterized in that: The end fixing plate is vertically connected to the shaft and the first part; When the number of the fan blades is 5, the shape of the end fixing plate is a ring-shaped main body, and evenly protrudes in five directions to form a five-star shape, and has an axial hole connected to the shaft rod in the middle.

8. The pulverizing shaft according to claim 6, characterized in that: The lateral strip is located on a side of the first portion away from the end fixing plate.

9. The pulverizing shaft according to claim 1, characterized in that: The crushing knives are arranged in a spiral shape on the circumference of the shaft.

10. A baling machine, characterized in that: It uses the pulverizing shaft described in any one of claims 1 to 9.

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