Lightweight hammer, crushing mechanism and straw crusher

Abstract

The utility model relates to the technical field of straw smashing, in particular to a lightweight hammer, a smashing mechanism and a straw smasher, the lightweight hammer comprises a body, a first mounting hole is formed in the body, the body is provided with a group of two long edges which are symmetrically arranged, the two long edges are connected through two short edges which are symmetrically arranged, and the short edges are connected with the first mounting hole. The long edge is integrally in a concave arc shape, the crushing sawteeth are arranged at the position, close to the short edge, of the long edge, on one hand, the long edge of the hammer sheet is designed according to a concave curve, the sufficient width of the crushing end is guaranteed, meanwhile, the weight of the whole structure is reduced, and light weight is achieved; on the other hand, due to the fact that the serrated edges are arranged at the tail ends of the long edges, the function of cutting off the straw can be added when the crusher collides with the straw, and finally the crushing effect of the crusher is improved.

Description

Technical Field

[0001] This utility model relates to the field of straw crushing technology, and in particular to a lightweight hammer blade, crushing mechanism and straw crusher. Background Technology

[0002] Hammer blades are one of the core components of a straw crusher. They are roughly rectangular in shape with a certain thickness and are rotatably mounted on a bushing. During operation, the bushing rotates the hammer blades, and the hammer blades swing around the bushing under their own weight, using the resulting impact force to crush the straw that enters the working chamber of the crusher.

[0003] Currently, the most common structure of hammer blades on the market is still the standard rectangular structure. Some research on the structural optimization of hammer blades only focuses on improving the performance of the hammer blades, and there is not much comprehensive consideration of structural lightweighting and energy saving. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to propose a lightweight hammer blade, a crushing mechanism and a straw crusher, so as to optimize the hammer blade and improve energy efficiency.

[0005] Based on the above objectives, as a first aspect of this utility model, a lightweight hammer blade is provided, including a body, on which a first mounting hole is provided, the body having a set of two symmetrically arranged long sides, the two long sides being connected by two symmetrically arranged short sides, the long sides being generally concave arc-shaped, and having breaking teeth arranged near the short sides.

[0006] As an optional implementation, there are two first mounting holes, which are symmetrically arranged on the center lines of the two long sides.

[0007] As an optional implementation, the tooth spacing of the breaking saw teeth is gradually increasing, with the tooth spacing gradually increasing towards the shorter side.

[0008] As an optional implementation, the length of the long side is 180±10mm, the length of the short side is 35±5mm, and the radius of the arc is 300±10mm.

[0009] As a second aspect of this utility model, a crushing mechanism is provided, including a main shaft and multiple bushings. Multiple hammer plate frames are fixedly installed on the main shaft at intervals. Multiple centrally symmetrical second mounting holes are provided on the hammer plate frames. The bushings are fixedly installed in the second mounting holes. A lightweight hammer blade is rotatably installed on the bushing between every two hammer plate frames. The lightweight hammer blade is the aforementioned lightweight hammer blade.

[0010] As an optional implementation, nine hammer plate frames are fixedly installed at intervals on the main shaft, and the hammer plate frames are provided with four centrally symmetrical second mounting holes.

[0011] As a third aspect of this utility model, a straw crusher is provided, which has a crushing mechanism as described above.

[0012] The beneficial effects of this utility model are as follows: Compared with traditional crusher hammer blades, this hammer blade has significant optimizations in terms of lightweighting and crushing performance. On the one hand, the long side of the hammer blade is designed with an inward concave curve, which reduces the overall structural weight while ensuring sufficient width at the crushing end, thus achieving lightweighting. On the other hand, due to the serrated edge at the end of the long side, it can increase the cutting function of the straw when colliding with it, ultimately improving the crushing effect of the crusher. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the crushing mechanism according to an embodiment of the present utility model;

[0015] Figure 2 This is a side view of the crushing mechanism according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the hammer blade in an embodiment of the present invention.

[0017] The diagram is marked as follows:

[0018] 10. Main shaft; 20. Bushing; 30. Hammer blade; 31. Body; 32. Long side; 33. Short side; 34. First mounting hole; 35. Crushing saw teeth; 40. Hammer plate frame; Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] As one embodiment of this utility model, a straw crusher is provided, which has a crushing mechanism, such as... Figures 1 to 2 As shown, the crushing mechanism includes a main shaft 10 and multiple bushings 20. Multiple hammer plate frames 40 are fixedly mounted on the main shaft 10 at intervals. Each hammer plate frame 40 has multiple centrally symmetrical second mounting holes. The bushings 20 are fixedly installed within these second mounting holes. Lightweight hammer blades 30 are rotatably mounted on the bushing 20 between every two hammer plate frames 40. Figure 3 As shown, the lightweight hammer blade 30 includes a body 31, on which a first mounting hole 34 is provided. The body 31 has a set of two symmetrically arranged long sides 32, which are connected by two symmetrically arranged short sides 33. The long sides 32 are generally concave arc-shaped, and the long sides 32 are provided with breaking teeth 35 near the short sides 33. The breaking teeth 35 are sharpened.

[0022] In this embodiment of the invention, when it is necessary to crush straw, the motor of the straw crusher is started, the motor drives the main shaft 10 to rotate, the main shaft 10 drives the hammer frame plate and the hammer shaft around it to rotate, and the hammer shaft drives the hammer blade 30 hinged on it to rotate. Since the rotation center of the hammer blade 30 is not the same as the rotation center of the main shaft 10, the hammer blade 30 itself will also rotate around the hammer shaft and form a certain angle.

[0023] After crop straw is fed into the crushing chamber through the feed inlet, the crushing mechanism will cut, impact, and grind the straw. First, the high-speed rotating hammer blade 30 collides with the untreated straw, and the long straw is cut into small segments by the gradually changing serrations at the end of the long side 32 of the hammer blade 30. Then, the straw cut into small segments will continue to impact the side of the hammer blade 30 repeatedly until it is crushed into tiny segments. The tiny straw segments adhere to the screen, and the end of the hammer blade 30 cooperates with the screen to squeeze and grind the tiny straw segments. Finally, the straw will be continuously crushed into particles with a diameter of 2-3 mm, and the crushing work is completed.

[0024] Since the working positions of the hammer blade 30 are mainly the upper and lower ends of the long side 32 and the short side 33, the upper and lower ends of the long side 32 cut long straw, and the short side 33 cooperates with the crushing chamber to grind the straw. Therefore, making the left and right long sides 32 into a concave arc structure will not cause a significant increase in the deformation of the hammer blade 30 during operation, thus not affecting the performance of the crusher. Due to the concave arc structure design of the long side 32, the weight of the hammer blade 30 is reduced, thus achieving the lightweight design of the hammer blade 30. The upper and lower ends of the left and right long sides 32 of the hammer blade 30 are made into a serrated structure (i.e., crushing serrations 35). During operation, the upper and lower ends of the long side 32 will slide relative to the long straw, and the crushing serrations 35 can improve the efficiency of cutting long straw, thereby improving the crushing effect of the crusher.

[0025] Therefore, compared with the traditional crusher hammer blade 30, this hammer blade 30 has significant optimizations in terms of lightweighting and crushing performance. On the one hand, the long side 32 of the hammer blade 30 is designed with an inward concave curve, which reduces the overall structural weight while ensuring sufficient width at the crushing end, thus achieving lightweighting. On the other hand, since the end of the long side 32 is equipped with crushing saw teeth 35, it can increase the cutting function of straw when colliding with it, ultimately improving the crushing effect of the crusher.

[0026] As an optional implementation, there are two first mounting holes 34, which are symmetrically arranged on the center line of the two long sides 32.

[0027] Considering that although the hammer blade 30 has four symmetrically designed crushing saw teeth 35, the wear of the four crushing saw teeth 35 is different during actual operation after the hammer blade 30 is installed on the crushing mechanism. The wear of one crushing saw tooth 35 is significantly higher than that of the other three. Therefore, by symmetrically setting the first mounting hole 34 to two, the use of the four crushing saw teeth 35 can be optimized by adjusting the installation method of the hammer blade 30, so that the hammer blade 30 can be used more rationally and its efficiency can be improved.

[0028] The adjustment method for hammer blade 30 is as follows: When the wear of the first section of the crushing saw teeth 35 reaches the limit, the hammer blade 30 is flipped over and reinstalled. Note that the first mounting hole 34 on the bushing 20 remains unchanged, allowing the second section of the crushing saw teeth 35 to undertake the main working task. When the wear of the second section of the crushing saw teeth 35 reaches the limit, the hammer blade 30 is removed, the first mounting hole 34 is changed, and then it is reinstalled. Note that the hammer blade 30 is not flipped over, allowing the third section of the crushing saw teeth 35 to undertake the main working task. When the wear of the third section of the crushing saw teeth 35 reaches the limit, the hammer blade 30 is removed, flipped over, and then reinstalled. Note that the first mounting hole 34 on the bushing 20 remains unchanged, allowing the fourth section of the crushing saw teeth 35 to undertake the main working task.

[0029] It should be noted that the above-described adjustment method for the hammer blade 30 is merely illustrative and not a specific limitation on the use of the hammer blade 30. The above method aims to illustrate how to make different sections of the crushing saw teeth 35 undertake the main working task. Those skilled in the art should understand, under the guidance of the above method, that there are multiple ways to adjust the hammer blade 30. As long as the wear of one section of the crushing saw teeth 35 reaches the limit, the other end of the crushing saw teeth 35 can undertake the main working task by flipping the hammer blade 30, changing the first mounting hole 34, or flipping and adjusting the first mounting hole 34.

[0030] As an optional implementation, the tooth spacing of the breaking saw teeth 35 is gradually increasing, with the tooth spacing gradually increasing towards the short side 33.

[0031] As an optional implementation, the length of the long side 32 is 180±10mm, the length of the short side 33 is 35±5mm, and the radius of the arc is 300±10mm. Specifically, the hammer blade 30 has a long side 32 of 180mm, a short side 33 of 35mm, a thickness of 3mm, and a bushing 20 mounting hole diameter of 20mm. After analysis and experimental verification, setting the arc with a radius of 300mm yields the best overall performance.

[0032] As an optional implementation, nine hammer plate holders 40 are fixedly installed on the main shaft 10 at intervals, and the hammer plate holders 40 are provided with four centrally symmetrical second mounting holes.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lightweight hammer blade, characterized in that, Includes a body, on which a first mounting hole is provided. The body has a set of two symmetrically arranged long sides, which are connected by two symmetrically arranged short sides. The long sides are generally concave arc-shaped, and broken saw teeth are provided on the long sides near the short sides. There are two first mounting holes, which are symmetrically arranged on the center lines of the two long sides; The tooth spacing of the breaking saw teeth is gradually increasing, with the tooth spacing gradually increasing towards the shorter side. The length of the long side is 180±10mm, the length of the short side is 35±5mm, and the radius of the arc is 300±10mm.

2. A crushing mechanism, characterized in that, It includes a main shaft and multiple bushings. Multiple hammer plate frames are fixedly installed on the main shaft at intervals. Multiple centrally symmetrical second mounting holes are provided on the hammer plate frames. The bushings are fixedly installed in the second mounting holes. A lightweight hammer blade is rotatably installed on the bushing between every two hammer plate frames. The lightweight hammer blade is the lightweight hammer blade as described in claim 1.

3. The crushing mechanism according to claim 2, characterized in that, Nine hammer plate frames are fixedly installed at intervals on the main shaft, and four centrally symmetrical second mounting holes are provided on the hammer plate frames.

4. A straw crusher, characterized in that, The straw crusher has the crushing mechanism as described in claim 2.

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