Improved pasture crusher

Abstract

A cylindrical screen is a split screen and is divided into an upper semicircular screen body and a lower semicircular screen body, a connecting pipe is fixedly connected to the adjacent end edges of the upper semicircular screen body and the lower semicircular screen body, a pin shaft is installed in the connecting pipe, and annular limiting rings are fixedly connected to the front wall and the rear wall in an upper half machine shell and a lower half machine shell. The front side edge and the rear side edge of the upper semicircular screen and the front side edge and the rear side edge of the lower semicircular screen are matched with annular limiting rings respectively, hinge holes and adjusting holes which are correspondingly matched with pin shafts extending out of the two ends of the connecting pipe are formed in the front walls and the rear walls of the left ends of the upper half machine shell and the lower half machine shell respectively, and hinge holes are formed in the front walls and the rear walls of the left ends of the upper half machine shell and the lower half machine shell respectively and matched with the pin shafts. According to the utility model, the structure is reasonable, the problems of easy deformation, bending, bag falling, derailing, scrapping and the like of the screen are solved, the limiting ring is used for replacing the existing plug-in screen channel groove, grass blockage is avoided, the screen is easy to replace, the labor intensity is reduced, and the service life of the screen is prolonged.

Description

Technical Field

[0001] The utility model belongs to the improvement of the structure of a forage grass crusher, in particular to an improved forage grass crusher. Background Art

[0002] The screens installed on existing pulverizers are usually of the inserted type. For example, the patent "A Self-priming Bale Breaker and Powdering Grass Machine" ZL202221061510.6 is also an inserted screen. Although it can be used, it is easy to lose the bale, deform, and become scrapped when encountering wet grass. These shortcomings are particularly troublesome.

[0003] The first disadvantage is that it is easy to break. Once too much wet grass enters the screen, it will easily deform, bend and fall out, and then cause derailment (falling out of the slot). If it is completely out, it will be fine, but it is only half out, and the other half is stuck in the screen groove and is very difficult to remove. It is particularly laborious and time-consuming, and you even have to take it to a place with electric welding and use electric welding to cut it off piece by piece before you can take it out. Not only is it difficult to remove but also a piece of screen is scrapped.

[0004] The second disadvantage is that it is very time-consuming to replace the screen. During the grass powdering process, the grass fibers in the gaps of the screen path clamp the screen very tightly, leaving no gap at all. The screen has to be pried out with a crowbar. Especially in winter, the grass fibers frozen in the gaps of the screen path are even more difficult to remove, and may even have to be roasted with fire or scalded with boiling water to be pulled out, which is very time-consuming and laborious. Utility Model Content

[0005] The purpose of the utility model is to provide an improved forage crusher with a reasonable structure, which can solve the problems of easy deformation, bending, bag loss, derailment, or scrapping of the screen. By replacing the existing inserted screen groove with a "limiting ring", grass will no longer be blocked, the screen can be easily replaced, the labor intensity is reduced, and the service life of the screen is increased.

[0006] The purpose of the utility model is achieved as follows: an improved forage crusher, including an impeller with a cutting blade and a swing hammer installed in a casing through a rotating shaft, a cylindrical screen is installed on the outer circumference of the impeller, the cylindrical screen is a split screen, the split screen is divided into an upper semicircular screen and a lower semicircular screen, the upper semicircular screen and the lower semicircular screen are respectively fixed on the adjacent end edges of the connecting pipe, the connecting pipe is respectively equipped with a pin, the front and rear walls of the upper and lower casings are fixed with an annular limiting ring, the front and rear sides of the upper and lower casings are respectively matched with the annular limiting ring, and the front and rear walls of the left and right ends of the upper and lower casings are respectively fixed with the annular limiting ring. Hinge holes and upper and lower adjustment holes are respectively provided, wherein hinge holes are respectively provided on the front and rear walls at the left ends of the upper and lower half casings, the hinge holes cooperate with the pin shaft to hinge the left ends of the upper and lower semicircular screens, and upper and lower adjustment holes are respectively provided on the outer walls of the front and rear walls at the right ends of the upper and lower half casings, the upper and lower adjustment holes correspond to the upper and lower supports, the upper and lower adjustment holes cooperate with the protruding pin shaft, and adjusting bolts are cooperated and installed between the pin shafts protruding from the upper and lower adjustment holes and the corresponding supports, and the tightening and fixing device controlled by the adjusting bolts tightens the front and rear sides of the upper and lower semicircular screens and the hoop on the limiting ring.

[0007] The utility model designs and welds an appropriate steel pipe as a connecting pipe at both ends of the two semicircular screens, and installs a pin in the connecting pipe. When installing, the pin is matched with the hinge hole on the casing, and another pin that is 50mm longer than the width of the casing is matched with the adjustment hole on the other side of the casing, and then a thrust screw sleeve is put on the pin that protrudes from the casing on both sides, and a screw is welded on both sides of the outside of the casing with an angle iron to adjust the fixed point. The installation method of the utility model is the same. When adjusting, push the pin in the direction of the enclosure until it reaches the limit ring (pushing on the limit ring can also be said to be pulling), that is, Tighten it until it is on the limit ring, and then lock the adjusting nut. The adjustment method of the upper and lower semicircular screens is the same. The advantages of the utility model are: first, because the two semicircular screens rely on the pulling force at both ends, the advantage of the pulling force is that the force is large, even if more wet grass enters the screen, it will not be deformed, bent, dropped, derailed, or scrapped. Second, at the same time, the screen groove is replaced by the "limiting ring", and there is no problem of grass being caught in the existing groove, and there is no need for a screen, and there is no track to be detached. It is particularly easy and convenient to replace the cylindrical screen, which saves labor and effort. According to experiments, the service life is more than 5 times that of the inserted screen.

[0008] The utility model mainly provides a connection pipe welded at both ends of the upper and lower semicircular screens for easy insertion of the pin shaft. Under the action of the thrust screws on both sides, the screens are pushed and pulled in relative directions, so that the upper and lower semicircular screens play the role of a clamp. This design is not only simple in structure, strong and durable, but also convenient for loading and unloading. At the same time, the inserted screen channel on the inner wall of the casing is also changed into a limiting ring. The manufacturing structure of the limiting ring is very simple and convenient. Only a semicircular ring of suitable size welded with a flat iron is called a "limiting ring".

[0009] Installation and use of the utility model: open the upper casing of the grass powder machine, put the upper and lower semicircular screens of the semicircular arc into the casing, first align the steel pipes at one end of the upper and lower semicircular screens with the rear latch hinge holes of the casing, then pass the pin shaft through the hinge hole and then through the connecting pipe at one end of the screen, and then pass through the front latch hinge hole, and then pass another long pin shaft through the upper and lower rear adjustment holes and then through the screen connecting pipe and then through the front adjustment hole, then use a wrench to tighten the adjusting bolts, tighten the front and rear sides of the upper and lower semicircular screens to the limit rings, and then lock the adjusting bolts until the nuts are in place. do Under the thrust, the screen becomes a hoop shape. Then close the casing and tighten the casing screws to start working. During operation, due to the strong strength of the designed cylindrical screen, no matter how much wet grass enters, it will not damage the cylindrical screen (it can even stall the main tractor). After testing, the life of the cylindrical screen is more than 5 times that of the inserted screen. The limit ring is very simple to make and very convenient to use. Just use a flat iron to weld a circle of suitable size in the casing. After testing, the life of the "limit ring" is more than 100 times that of the inserted screen because it is not subject to force.

[0010] The main innovation point is feature 1, the nut has strong pulling force, and the steel pipes and pins at both ends of the "hoop screen" are all under force, so the "hoop screen" will not deform, bend, drop, derail, or be scrapped. After testing, the life of the "hoop screen" is more than 5 times that of the plug screen.

[0011] Feature 2 is that a semi-circular "limiting ring" of suitable size is welded on the inner wall of the casing with a flat iron. The structure is simple and the screen can be easily and conveniently replaced. Because it is not subjected to force, its service life is more than 100 times that of the existing inserted screen.

[0012] The utility model not only solves the problems of the existing screen being easily deformed, bent, dropped, derailed, or scrapped, but the limiting ring replaces the existing inserted screen channel slot, which is very simple and only requires welding a circular ring-shaped screen-blocking "limiting ring" on the inner wall of the casing with a flat iron. It is simple, saves labor and materials, and has low cost. There is no track to be detached, and grass will never get stuck. The screen can be replaced easily because the service life of the "limiting ring" that is not subject to force is more than 100 times that of the inserted screen channel, directly solving the problems of difficult screen replacement and easy damage in history. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model will be further described below in conjunction with the accompanying drawings. Figure 1 It is a cross-sectional structural schematic diagram of the utility model. Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A, Figure 3 is a side view of the screen assembly, Figure 4 This is a disassembled parts diagram of the screen assembly. DETAILED DESCRIPTION

[0014] An improved forage crusher, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an impeller having a cutting blade 2 and a swing hammer 3 is installed in a casing 1 through a rotating shaft, a cylindrical screen is installed on the outer circumference of the impeller, and the cylindrical screen is a split screen. The split screen is divided into an upper semicircular screen 4 and a lower semicircular screen 5. Connecting pipes 12 are fixed to the adjacent end edges of the upper semicircular screen 4 and the lower semicircular screen 5, and pins 6 are installed in the connecting pipes 12. An annular limiting ring 7 is fixed to the front and rear walls of the upper and lower casings, and the front and rear sides of the upper and lower casings are respectively matched with the annular limiting ring 7. A hinge hole and an upper adjustment hole 11 and a lower adjustment hole are respectively provided on the front and rear walls of the left and right ends of the upper and lower casings. 15, wherein hinge holes are respectively arranged on the front and rear walls of the left ends of the upper and lower half shells, and the hinge holes cooperate with the pin 6 to hinge the left ends of the upper semicircular screen 4 and the lower semicircular screen 5, and upper adjustment holes 11 and lower adjustment holes 15 are respectively arranged on the outer walls of the front and rear walls of the right ends of the upper and lower half shells, and the upper adjustment holes 11 and the lower adjustment holes 15 correspond to the upper support 9 and the lower support 10, and the upper adjustment holes 11 and the lower adjustment holes 15 cooperate with the extended pin 6, and the adjustment bolt 8 is installed between the extended upper adjustment holes 11 and the lower adjustment holes 15 and the corresponding support, and the tightening and fixing device controlled by the adjustment bolt 8 tightens the front and rear sides of the upper semicircular screen 4 and the lower semicircular screen 5 on the limit ring 7. The limit ring 7 is composed of flat steel, and the annular flat steel is welded on the front and rear walls in the upper and lower half shells respectively. The adjustment hole 11 is a long strip hole. The structure of the tightening and fixing device is that a sleeve 13 is installed on the pin shaft 6 extending out of the upper adjustment hole 11 and the lower adjustment hole 15, and the adjusting bolt 8 fixed to the sleeve 13 is perpendicular to the sleeve 13. The adjusting bolt 8 cooperates with the corresponding support bolt hole, and nuts 14 are installed on the adjusting bolts 8 located on the upper and lower support plates of the support, respectively. The front and rear sides of the upper semicircular screen 4 and the lower semicircular screen 5 are shrunk and wrapped around the corresponding limit rings 7 by adjusting the nuts 14.

Claims

1. An improved forage pulverizer, comprising an impeller having a cutting blade (2) and a swing hammer (3) mounted in a housing (1) via a rotating shaft, and a cylindrical screen mounted on the outer circumference of the impeller, wherein: The cylindrical screen is a split screen, which is divided into an upper semicircular screen (4) and a lower semicircular screen (5). Connecting pipes (12) are fixedly connected to the adjacent end edges of the upper semicircular screen (4) and the lower semicircular screen (5). Pins (6) are respectively installed in the connecting pipes (12). An annular limiting ring (7) is fixedly connected to the front and rear walls of the upper and lower half shells. The front and rear sides of the upper and lower semicircular screen (4) and the lower semicircular screen (5) are respectively matched with the annular limiting ring (7). Hinge holes and upper adjustment holes (11) and lower adjustment holes (15) are respectively arranged on the front and rear walls of the left and right ends of the upper and lower half shells. The hinge holes are respectively arranged on the front and rear walls of the left ends of the upper and lower half shells. In cooperation with the pin shaft (6), the left ends of the upper semicircular screen (4) and the lower semicircular screen (5) are hinged, and an upper adjustment hole (11) and a lower adjustment hole (15) are respectively arranged on the outer walls of the front and rear walls of the right ends of the upper and lower half casings. The upper adjustment hole (11) and the lower adjustment hole (15) correspond to the upper support (9) and the lower support (10). The upper adjustment hole (11) and the lower adjustment hole (15) are matched with the extended pin shaft (6). An adjustment bolt (8) is installed between the pin shaft (6) extending from the upper adjustment hole (11) and the lower adjustment hole (15) and the corresponding support. The tightening and fixing device controlled by the adjustment bolt (8) tightens the front and rear sides of the upper semicircular screen (4) and the lower semicircular screen (5) to be clamped on the limiting ring (7).

2. An improved grass crusher according to claim 1, characterized in that: The limiting ring (7) is made of flat steel, and the annular flat steel is welded to the front and rear walls in the upper and lower half casings respectively.

3. The improved grass crusher according to claim 1, characterized in that: The adjustment hole (11) is a long strip hole.

4. The improved grass crusher according to claim 1, characterized in that: The structure of the tightening and fixing device is that a sleeve (13) is installed on a pin shaft (6) extending out of an upper adjustment hole (11) and a lower adjustment hole (15), an adjusting bolt (8) fixed to the sleeve (13) is perpendicular to the sleeve (13), the adjusting bolt (8) is matched with a corresponding support bolt hole, and nuts (14) are installed on the adjusting bolts (8) located on the upper and lower sides of the support support plate, respectively, and the front and rear sides of the upper semicircular screen (4) and the lower semicircular screen (5) are shrunk and wrapped on the corresponding limit rings (7) by adjusting the nuts (14).

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