Scraper mounting structure

Abstract

To provide a scraper fitting structure that can keep an interval between a roller and a scraper constant and immediately fit the scraper thereto.SOLUTION: A scraper fitting structure includes: a transportation part 3 constituted of a first roller 31 to a fourth roller 34 for transporting crop plants while holding them therebetween; a scraper 37 installed while having a constant interval to an outer peripheral surface of a third roller 33 of which surface is formed smoothly and preventing crop plants from being wound around the third roller 33; a bearing flange 36 for holding an end of the third roller 33 so as to be rotatable; and right and left frames 30 for fitting the bearing flange 36 thereto. A jaw part 36B for fitting the scraper 37 thereto is installed to the bearing flange 36.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a scraper mounting structure that prevents long crops from getting wrapped around rollers that form a conveying section when the crops are being conveyed. [Background technology]

[0002] The forage crops grown in the field are harvested by a harvester and then chopped into pieces for use as forage crops.

[0003] An example of a harvester for harvesting such feed crops is a roll baler.

[0004] This roll baler is composed of a cutting section that cuts long crops near the base, a transport section that takes in the crops cut by the cutting section in the longitudinal direction of the stems and transports them, a shredding section that shreds the crops transported by the transport section, a hopper that blows the crops shredded by the shredding section up and collects them through a chute, and a roll forming chamber that forms roll bales using the crops collected by the hopper.

[0005] In such harvesters, when long, cut crops are transported, the crops are sandwiched between a pair of upper and lower rollers and transported, and then shredded in a shredding section downstream.However, if the crops contain moisture, the moisture can cause the crops to wrap around the rollers, causing problems such as clogging or preventing the crops from being transported to the shredding section.

[0006] For this reason, conventionally, scrapers are attached near the outer circumferential surface of the roller with a certain gap between them to prevent the crops from getting wrapped around the roller. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-73137 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-68567 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the past, when attaching scrapers near rollers, the scrapers were attached by welding or the like to the left and right frames that hold the rollers. Specifically, when attaching the scrapers, the rollers were attached to the left and right frames via bearing flanges, and the scrapers were attached to the frames by welding with a small gap from the outer circumferential surface of the attached rollers. This resulted in problems such as time-consuming adjustment of the gap between the scraper and the roller when attaching it, and the possibility of the gap being uneven depending on the worker. Furthermore, there was also the problem that distortion of the scraper occurred during welding, or the gap between the scraper and the roller could be misaligned depending on distortion of the frame or the mounting state of the roller, resulting in crops getting wrapped around the roller.

[0009] The present invention has been made in light of the above-mentioned problems, and has as its object to provide a scraper mounting structure that can maintain a constant gap between the roller and the scraper and that allows the scraper to be quickly mounted. [Means for solving the problem]

[0010] In other words, in order to solve the above-mentioned problems, the present invention comprises a pair of upper and lower rollers that sandwich and transport the crops, a scraper that is arranged at a certain distance from the outer peripheral surface of the rollers and prevents the crops from getting wrapped around the rollers, a bearing flange that rotatably holds the end of the roller, and left and right frames for attaching the bearing flange, and the bearing flange is provided with an attachment portion for attaching the scraper.

[0011] With this configuration, the scraper is attached to the bearing flange of the roller, so the relative positional relationship between the roller and the scraper can be kept constant at all times, and the scraper can be attached in a fixed position regardless of distortion in the attachment state of the scraper during welding, distortion of the frame, or the attachment state of the roller.

[0012] In addition, in such an invention, when the mounting portion is configured, a jaw portion is provided that extends outward from the outer periphery of the bearing flange, and a scraper is attached to the jaw portion via a bolt.

[0013] With this configuration, scrapers can be attached to the jaws that protrude from the bearing flanges, making it possible to attach scrapers from the front of the left and right frames.

[0014] Furthermore, a scraper is attached to the underside of the jaw portion thus provided.

[0015] With this configuration, a large attachment area for the scraper can be secured, and the edge of the scraper can be positioned near the contact surface with another roller provided opposite it.

[0016] Furthermore, when the mounting portion is provided, it is configured by providing a recess cut inward from the outer periphery of the bearing flange, and a jaw portion extending outward from the outer periphery of the bearing flange below the recess, and the scraper is attached to the jaw portion via a bolt.

[0017] With this configuration, it becomes possible to mount the device by inserting a bolt or the like into the space formed by the recess.

[0018] In addition, a shredding section is provided that is made up of a fixed blade and a rotary blade for shredding the crops transported by the roller, and the surface of the scraper is made to coincide with the surface of the fixed blade.

[0019] With this configuration, the bunch of crops positioned by the scraper can be transferred to the fixed blade and shredded by the rotary blade. [Effects of the Invention]

[0020] According to the present invention, the scraper is attached to the bearing flange of the roller, so that the relative positional relationship between the roller and the scraper can be kept constant at all times, and the scraper can be attached in a fixed position regardless of distortion of the attachment state of the scraper during welding, distortion of the frame, or the attachment state of the roller. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a diagram showing a roll baler according to an embodiment of the present invention. [Figure 2] A diagram showing the reaping section, transport section, shredding section, etc. at the front of the machine body in this configuration. [Figure 3] FIG. 10 is an exploded perspective view showing a third roller and a frame of the conveying unit in the embodiment; [Figure 4] A diagram showing the bearing flange and scraper in the same configuration. [Figure 5] FIG. 10 is a diagram showing a state in which a scraper is attached to a bearing flange in the same embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0023] The scraper mounting structure in this embodiment is designed to prevent crops from getting wrapped around the rollers when being transported, and is applied, for example, to a roll baler 1 that transports and shreds long crops.

[0024] As shown in FIG. 1, this roll baler 1 includes a reaping unit 2 consisting of a pair of left and right drum cutters mounted at the front of the machine body, a conveying unit 3 that conveys long crops harvested by the reaping unit 2 along the length of the crops, a shredding unit 4 that shreds the crops conveyed by the conveying unit 3, a hopper 6 that blows up the crops shredded by the shredding unit 4 using a chute 5 and collects them, and a roll forming chamber 7 that forms cylindrical roll bales from the crops collected by the hopper 6 and transported by a conveyor 71. Characteristically, as shown in FIGS. 4 and 5, when transporting crops, a scraper 37 is attached to the bearing flange 36 of the third roller 33, maintaining a constant gap between the third roller 33 and the scraper 37 to prevent the crops from getting wrapped around the third roller 33. This embodiment will be described in detail below.

[0025] First, the reaping unit 2 is located at the front of the machine body and is composed of left and right disc cutters. These disc cutters rotate inward to cut the roots of the crops, and the cut crops can be collected between the left and right disc cutters from near the roots.

[0026] As shown in FIG. 2 , the conveying unit 3 includes a pair of upper and lower rollers, a first roller 31 and a second roller 32, located upstream, and a pair of upper and lower rollers, a third roller 33 and a fourth roller 34, located downstream. The conveying unit 3 receives crops from the harvesting unit 2 between the first roller 31 and the second roller 32, and then sandwiches the leading edge of the crop between the downstream third roller 33 and the fourth roller 34, thereby conveying the crops longitudinally. The first roller 31 and the second roller 32 have protruding blades on their outer peripheries to facilitate crop collection. The fourth roller 34 has small irregularities on its outer periphery to facilitate crop transport. The third roller 33 has a smooth cylindrical shape, which transports the crops from the third roller 33 toward the fixed blade 41 of the shredding unit 4. The first roller 31 is movable vertically by an arm 35A attached to the end of the third roller 33, and the fourth roller 34 is movable vertically by an arm 35B attached to the end of the second roller 32. By moving it up and down in this way, the gap width can be changed according to the thickness of the crops.

[0027] The shredding unit 4 is capable of shredding crops transported from the conveying unit 3, and as shown in Figure 2, is configured so that crops taken in along the longitudinal direction can be shredded with a fixed blade 41 and a rotary blade 42. The shredded crops are blown up through a chute 5 and released into a hopper 6 provided at the top of the machine body. The fixed blade 41 is provided so as to form the same plane as the underside of a scraper 37 provided on the third roller 33 of the conveying unit 3, so that the crops aligned by the scraper 37 can be positioned by the fixed blade 41 and shredded by the rotary blade 42.

[0028] The crops discharged into the hopper 6 fall onto a conveyor 71 (see FIG. 1) provided inside the machine body, and are then carried from there into the roll forming chamber 7.

[0029] The roll forming chamber 7 forms cylindrical roll bales from crops brought in by a conveyor 71. A rotating member 72 installed inside rotates circumferentially, causing the crops to rotate on their own axis and form the roll bale. A net fed from a net feeding section 73 is wound around the roll bale formed in this way, and then the rear chamber 74 is opened to release the bale into the field.

[0030] Based on this configuration, in this embodiment, a scraper 37 is attached to the bearing flange 36 of the downstream third roller 33 that constitutes the conveying section 3 to prevent long crops from becoming wrapped around the third roller 33.

[0031] As shown in FIG. 3 , the scraper 37 is configured as a horizontally elongated plate aligned along the rotation axis of the third roller 33, with its edge 38 positioned slightly away from the third roller 33 to prevent crops from getting wrapped around the third roller 33. The bearing flange 36 to which the scraper 37 is attached has a recess 36A recessed in a direction perpendicular to the radial direction, as shown in FIG. 4 , and a jaw 36B extending outward perpendicular to the radial direction from the outer periphery of the bearing flange 36 below the recess 36A. The scraper 37 is configured to be attached below the jaw 36B. As shown in FIG. 5 , the head of a bolt 39A is inserted into the recess 36A, passed through a hole in the jaw 36B, and fastened with a nut 39B below the scraper 37. This allows the relative positions of the bearing flange 36, the third roller 33, and the scraper 37 to be always constant, and also allows the scraper 37 to be attached without welding.

[0032] When attaching the scraper 37 in this manner, it is necessary to position the edge 38 from the bearing flange 36 around the front end of the frame 30 and near the surface of the third roller 33. In this case, the scraper 37 may be provided with a groove or the like to avoid the end of the frame 30, but this may weaken the strength of the scraper 37 and result in deformation due to the groove. Therefore, in this embodiment, notches 30A are formed in the left and right frames 30 toward the third roller 33, and the jaws 36B of the bearing flange 36 protrude forward from the notches 30A so that the scraper 37 can be attached. This allows the scraper 37 to be formed in a rectangular shape, which provides the scraper 37 with strength and prevents deformation.

[0033] Next, the operation of the round baler 1 configured as above will be described.

[0034] First, the roll baler 1 is driven to harvest the crops, and the crops are collected between the left and right drum cutters starting from near the roots.

[0035] The crops thus taken in are caught between the first roller 31 and the second roller 32, and then conveyed along the length of the crops while being sandwiched between the third roller 33 and the fourth roller 34 located downstream. At this time, there is a possibility that the moisture-containing crops may adhere to the smooth surface of the third roller 33, but scraper 37 attached to bearing flange 36 prevents this, and the crops are conveyed toward fixed blade 41.

[0036] The crops transported in this manner are sent toward a fixed blade 41 that is flush with the scraper 37, and while the crops are fixed by the fixed blade 41, they are chopped by a rotary blade 42. Then, the chopped crops are released into a hopper 6 via a chute 5 by the wind pressure generated when the rotary blade 42 is rotated.

[0037] The crops collected in this hopper 6 are transported rearward by a conveyor 71 installed inside the machine body, and are formed into cylindrical roll bales by rotating the rotating member 72 in the roll forming chamber 7.

[0038] After the roll bale has been formed to a certain size, the net is let out from the net letting-out section 73 and wrapped around the surface of the roll bale, and the rear chamber 74 is opened to release the roll bale into the field.

[0039] As described above, according to the embodiment, the system includes a conveying section 3 made up of first roller 31 to fourth roller 34 that sandwich and convey the crops, a scraper 37 that is provided with a certain gap from the outer peripheral surface of the smoothly formed third roller 33 and prevents the crops from getting wrapped around the third roller 33, a bearing flange 36 that rotatably holds the end of the third roller 33, and left and right frames 30 for attaching the bearing flange 36, and the bearing flange 36 is provided with a recess 36A and a jaw portion 36B for attaching the scraper 37, so that the relative positional relationship between the third roller 33 and the scraper 37 can always be kept constant, making it possible to prevent the crops from getting wrapped around the third roller 33.

[0040] The present invention is not limited to the above-described embodiment, but can be implemented in various forms.

[0041] For example, in the above embodiment, the roll baler 1 has been described as an example, but the present invention can be applied to any device that can transport long crops.

[0042] Furthermore, in the above embodiment, the scraper 37 is attached to the jaw portion 36B that protrudes from the outer periphery of the bearing flange 36, but it is also possible to form an attachment portion on the side surface of the bearing flange 36 for attaching the scraper 37, and attach the scraper 37 to that attachment portion.

[0043] Furthermore, in the above embodiment, the scraper 37 is attached to the third roller 33, but when attaching a scraper to an endless belt, the scraper may also be attached to the bearing flange of the roller that drives the endless belt. [Explanation of symbols]

[0044] 1. Roll baler 2...Reaping section 3. Transfer section 30 frames 30A...Notch 31 First roller 32 Second roller 33 Third roller 34 Fourth roller 36 Bearing flange 36A···Recess 36B···Jaw (mounting part) 37. Scraper 38 Edge 4. Shredding section

Claims

1. A pair of upper and lower rollers that sandwich and transport the crops; a scraper provided at a certain distance from the outer peripheral surface of the roller to prevent the crop from getting wrapped around the roller; a bearing flange for rotatably holding the end of the roller; left and right frames for mounting the bearing flange; A scraper mounting structure characterized in that the bearing flange is provided with a mounting portion for mounting the scraper.

2. The mounting portion is The bearing flange is configured with a jaw portion extending outward from the outer periphery thereof, 2. The scraper mounting structure according to claim 1, wherein the scraper is mounted on the jaw portion via a bolt.

3. The mounting portion is The bearing flange is configured with a jaw portion extending outward from the outer periphery thereof, 2. The scraper mounting structure according to claim 1, wherein the scraper is mounted on the underside of the jaw portion.

4. The mounting portion is a recess cut inward from an outer circumferential portion of the bearing flange; a jaw portion extending outward from the outer periphery of the bearing flange below the recess, 2. The scraper mounting structure according to claim 1, wherein the scraper is mounted on the jaw portion via a bolt.

5. a shredding unit including a fixed blade and a rotary blade for shredding the crops transported by the roller; 2. The scraper mounting structure according to claim 1, wherein the surface of the scraper is flush with the surface of the fixed blade.

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