Rotor with tools for shredders, mowing units and / or comminuting machines, and tool for a rotor for shredders, mowing units and / or comminuting machines

Abstract

The invention relates to a tool carrier rotor (200) for a comminuting machine, a shredder, a stabiliser, a rotary cultivator and / or for cutting biomass and / or waste or similar materials, which can be rotated about an axis of rotation, - the tool carrier rotor (200) comprising a row of tool holders (110) and tools (100), the tool holders (110) being fastened to the outer surface of the tool carrier rotor (200), the tool holder (110) having a first front part (111) in the cutting direction and a second rear part (114) in the cutting direction, and a receptacle (118) being formed between the first and the second part (111, 114), and the tool (100) being fastened in the receptacle of the tool holder (110) by means of a screw (121). According to the invention, in the receptacle (118) receiving the tool (100) between the first part and the second part of the tool, an elevated portion (116) is arranged on the base and an elevated portion (115) is arranged on the rear part (114) to which the tool (100) is fastened, - the tool having a tool body (104) which has a cutting edge (101) on the upper front side of the tool body (104) in the cutting direction, a front surface in the cutting direction and a rear surface opposite the front surface, and the tool (100) corresponds to the two elevated portions (116, 115), which make it possible to produce a form-fitting connection between the tool (100) and the tool holder (110) by centring the tool, and the tool (100) has a greater width than the rear side of the tool holder (110), and the tool has a rear part which protrudes in the cutting direction and which forms a step (109), and the tool (110) is inserted, with a stop against the first front part (111) in the cutting direction and against the second rear part (114) in the cutting direction of the tool holder (110), on the stop.

Description

[0001] Title: Rotor with tools for shredders, mowers and / or shredders and tool for a rotor for shredders, mowers and / or shredders

[0002] The present invention relates to a rotor with tools for a shredding machine and / or a shredder, a milling cutter for soil cultivation and / or for cutting biomass and / or waste or similar materials, as specified in the classifying part of claim 1, and to a tool for a rotor shredding machine and / or a rotor shredder. Scope of application

[0003] The application area includes shredding machines and / or crushing machines, milling machines, soil milling machines and / or milling machines for shredding biomass and / or waste or similar materials.

[0004] The machines described are typically used for shredding, for example, plants, breaking stones, or shredding waste. These machines have a rotating rotor on which a series of mounts for shredding and / or cutting tools are arranged.

[0005] State of the art

[0006] WO WO2023148046A1 specifies that a tool for a tool carrier rotor has a tool body on which a cutting edge is arranged in the front central upper area. The tool body has a slot in the frontal direction and in the direction of rotation for central insertion into a partition and a through-hole for attaching the tool to a rear tool mounting seat on the tool rotor or directly on the tool rotor.

[0007] In general, two types of tool holders for crushing machines and / or milling machines are known. The first type has a support surface on which the tool is attached, for example by means of a screw, with its surface facing away from the cutting direction. This type of tool holder is known, for example, from DE 2013 110 289 A1. This type of tool holder has the problem that the entire body of the tool is exposed to impacts and damage in the cutting direction.

[0008] A second type of tool holder has a seat into which the tool is inserted. This seat consists of a first surface oriented in the cutting direction and a second surface on which the tool is attached with its surface opposite the cutting direction. A tool holder of this type is illustrated, for example, in EP 1 693 110. With this type of holder, the tool is placed on the base of the holder and then secured with a screw.

[0009] Furthermore, numerous means are known for regulating the cutting of the material to be processed, such as biomass, soil and waste.

[0010] From US 2017 / 079219, a ring for controlling cutting and / or shredding is known, which includes a ring for controlling the cutting depth. This ring has a first end and a second end; between the first and second ends, a tool holder is arranged, to which the ring is connected at the rear and partially at the front of the cutting tool body. The described ring must be mounted on the rotor to which the tool holders are attached, and the material to be shredded can be fed laterally past or over the cutting tool.

[0011] CA2531985 describes a cylindrical tube base for cutting heads. A series of cutting tools are fixed to the outer surface of the cylindrical base. US 7,938,350 discloses a tool holder and a tool in which the tool holder has a seat, and this seat has a protrusion onto which the tool can be placed with a recess. The protrusion serves to guide the tool during insertion, with the tool being secured by a sliding motion towards the front of the tool holder and a rotational motion at the front of the tool holder.

[0012] This means that the forces acting on the tool are partially transferred to the front part of the tool holder, and the raised section does not block the movement but allows the tool to slide on it.

[0013] Description

[0014] In the present invention, "significant" shall be understood to mean deviations of ±5% and / or ±5°, unless otherwise specified.

[0015] The purpose of the present invention is to realize a rotor with tools for shredding and / or crushing machines, stabilizers, milling cutters for soil cultivation and / or cutting of biomass and / or waste or similar materials, in which the service life of the tool holder is longer and the tool works better over time.

[0016] This purpose is achieved by a rotor equipped with tools for shredding machines and / or crushers, rotary tillers and / or for cutting biomass and / or waste or similar materials, as described in the characteristic part of claim 1. A tool carrier rotor for a shredding machine and / or a crusher is proposed, which is rotatable about a rotational axis.

[0017] -A series of tool holders are attached to the outer surface of the tool carrier, the tool holders having a first front part in the cutting direction and a second rear part in the cutting direction, wherein a seat is formed between the first and the second part, and a tool according to the invention is fastened in the seat of the tool holder by means of a screw

[0018] -In the receptacle that receives the tool, a raised section is arranged between the first part and the second part of the tool on the ground, and a raised section is arranged on the rear part where the tool is attached.

[0019] - The tool has a body having a cutting edge on the upper front of the body in the cutting direction, a front in the cutting direction and a back opposite the front, and the tool has two grooves corresponding to the protrusions and enabling the formation of a positive-locking connection between the tool and the tool holder, centering the tool and the width of the rear face of the tool holder being greater than that of the tool, and the tool has a rear projection in the cutting direction forming a step that rests on top of the rear part of the tool holder.

[0020] The tool is inserted by abutting the first front part in the cutting direction of the tool holder and the second rear part in the cutting direction of the tool holder. This allows the forces to be transferred to the rear part of the tool holder, which is not subjected to impacts from the material being cut.

[0021] The rotor has a series of tool holders on its outer surface, each of which is fastened with a screw and is designed to hold a tool.

[0022] According to the invention, a tool for milling machines, shredders, and the like is proposed, which is arranged in a tool holder with a seat and is connected to the outer surface of a tool holder rotor rotatable about an axis. The tool is received in the tool holder seat attached to the tool holder rotor. The seat consists of a first front part, which is arranged in the cutting direction, and a second rear part, to which the tool is attached with its surface opposite the cutting direction. The tool has a body that has a front surface located in the direction of rotation of the rotor and a rear surface opposite the front surface. According to the invention, the tool holder has a surface in the receptacle provided for the tool, which receives the tool.This recess is formed between the first and second surfaces and features a raised section at the bottom, while the rear surface, where the tool is attached, also has a raised section. The tool has two corresponding grooves that create a positive-locking connection between the tool and the tool holder by centering them. The width of the tool is greater than the rear surface of the tool holder, thus protecting it from potential damage by the material being machined. Furthermore, the groove-recess coupling prevents the tool from rotating in the seat, which could lead to screw breakage or cutting edge misalignment.

[0023] Furthermore, the lower groove of the tool is narrower than the rear groove on the surface of the tool.

[0024] This also results in a narrower width of the embossing on the rear surface of the tool compared to the lower embossing of the seat.

[0025] Furthermore, the tool has a rear recess that rests on top of the tool holder.

[0026] The greater width of the tool prevents damage to the tool holder, which would otherwise result in high replacement costs. Further purposes, features, advantages, and applications will become apparent from the following description of some exemplary embodiments and the accompanying drawings. Thus, all features described and / or illustrated in the figures, individually or in any combination, constitute the subject matter disclosed herein, regardless of their grouping in the claims or their interdependence, wherein:

[0027] Figure 1 shows a perspective view of a tool holder according to the invention, Figure 2 shows a side view of a tool holder with a tool according to the invention,

[0028] Figures 3a, 3b and 3d show sections of Figure 3c of a tool inserted into a tool holder according to the invention,

[0029] Figures 4a, 4b, 4c and 4d show views of a tool carrier according to the invention.

[0030] Figures 5a, 5b, 5c, 5d, 5e, 5f, 5g and 5h show views of a tool according to the invention.

[0031] Figures 6a, 6b, 6c, 6d, 6e, 6f and 6g show views of a tool holder with a tool according to the invention.

[0032] Figure 1 shows a tool carrier rotor with reference number 200, to which a series of tool holders 110 are attached.

[0033] The tool holder 110 has a front part 111 in the direction of rotation (section) and a rear part 114. Between the front part 111 and the rear part 114 is the receptacle 118, into which the tool 100 is inserted. The tool 100 is fastened to the rear part of the tool holder by means of a screw 121, which passes through the tool body 104 into the opening for the screw 103 in the tool body and engages in the tool holder screw hole 113.

[0034] The tool holder has a height H in the area of ​​the tool holder screw hole 113, starting from the outer surface of the tool carrier rotor 200.

[0035] Both the mounting of the tool holder 118 and the rear part on the tool's support surface have a protrusion 115, 116. The tool 100 has a groove in its lower part 106 and a groove 107 in its rear surface opposite the cutting edge 101 in the direction of rotation. The groove 106 in the lower part has a narrower width than the rear groove 107.

[0036] These two grooves 106, 107 fit the protrusions of the tool holder 115, 116. These two fits prevent the tool 100 from rotating or slipping out of its predetermined position.

[0037] Furthermore, the tool includes a step 109, which is advantageously part of the groove 107 and allows it to rest against the top of the tool holder 110. This step 109 secures the tool 100 better and also protects the tool holder in a further area.

[0038] The tool body 104 has a greater width than the width of the rear part of the tool holder 110 and has two lateral surfaces 105 which can be inclined to protect the tool holder 110 from the material.

[0039] In this way, the tool 100 protects the rear part of the tool holder 110 from most of the damage caused by the material to be cut.

[0040] This is particularly advantageous because the tool 100 is a replaceable part that also needs to be replaced due to the cutting edge 101 losing its sharpness, whereas the tool holder 110 is designed for a much longer service life and its replacement involves much more labor and high costs in the event of damage to the rotor 200. Advantageously, the tool body has a larger average width of 1-10%, preferably 2-7%.

[0041] Advantageously, the tool body 104 has a greater width over its entire height from the lower base surface to below the cutting edge and / or to the maximum height of the rear part of the tool holder. The cutting edge is located on the upper part of the tool, and this part is advantageously located outside the tool holder.

[0042] Advantageously, the tool rests with its upper part on the rear part of the tool holder.

[0043] Advantageously, the projection on the rear of the tool holder 110 has a greater width than the lower projection 116 in the receptacle 118 of the tool holder 110. The projection 116 in the lower part also serves to make the tool holder 110 more stable without increasing the overall height of the tool holder 110. According to the invention, the tool 100 for a tool carrier rotor (200) for a shredder, mower and / or crusher consists of a tool body 104, wherein this tool body 104 has the following:

[0044] -a cutting edge 101, which is located on the front side of the tool body 104, i.e. in the cutting direction, in the upper part,

[0045] -a first central groove 106 on the underside of the body 104, wherein the first groove 106 has a depth (t) of 10-30% of the height of the tool (T),-a second central groove 107 on the back of the body 104, wherein the second groove 107 has a greater width than the first groove 106, and

[0046] -a step 109 on the back of the tool in the upper part to accommodate the tool holder 110, to form a surface suitable for being placed on top of the tool holder 110.

[0047] Advantageously, the width of the lower groove b 106 of the tool 100 is between 50 and 80% of the width of the rear groove B 107 of the tool 100.

[0048] List of reference numbers:

[0049] 100 tools

[0050] 101 Cutting

[0051] 103 Opening for screw in tool

[0052] 104 Tool bodies

[0053] 105 lateral surface of the tool

[0054] 106 lower groove

[0055] 107 rear groove

[0056] Level 109

[0057] 110 tool holders

[0058] 111 first front part of the tool holder

[0059] 113 Tool holder screw hole

[0060] 114 second rear part of the tool holder

[0061] 115 Rear elevation of the tool holder

[0062] 116 lower elevation of the tool holder

[0063] 116a Connecting piece 118 Tool holder in tool holder

[0064] 121 screw

[0065] 200 Rotor of the tool holder

[0066] t Depth of lower groove 106 Tool 100

[0067] T Height of the tool 100

[0068] h Height of the lower elevation 116 of the tool holder 110 H Height H of the tool holder 110

[0069] b lower groove 106 of the tool 100

[0070] B rear groove 107 of the tool 100

Claims

Patent claims 1. A tool carrier rotor ( 200 ) for a crushing machine, a shredder, a stabilizer, a rotary tiller and / or for cutting biomass and / or waste or similar materials, which is rotatable about a rotary axis , The tool carrier rotor (200) comprises a series of tool holders (110) and tools (100), wherein the tool holders (110) are attached to the outer surface of the tool carrier rotor (200), wherein the tool holders (110) have a first front part (111) in the cutting direction and a second rear part (114) in the cutting direction, and a receptacle (118) is formed between the first and the second part (111, 114), and the tool (100) is fastened in the receptacle of the tool holder (110) by means of a screw (121), characterized in that - in the receptacle (118) receiving the tool (100) a raised section (116) is arranged between the first part and the second part of the tool on the ground and a raised section (115) is arranged on the rear part (114) to which the tool (100) is attached, - the tool has a tool body (104) having a cutting edge (101) on the upper front face of the tool body (104) in the cutting direction, a front surface in the cutting direction, and a rear surface opposite the front surface, and the tool (100) has two projections (116, 115) corresponding to the projections (116, 115) which enable a positive-locking connection between the tool (100) and the tool holder (110) to be made by centering the tool, and the tool (100) has a greater width than the rear of the tool holder (110), and that the tool has a rear portion projecting in the cutting direction, forming a step (109), and that the tool (110) has a stop against the first front portion (111), which has a stop in the cutting direction, and against the second rear portion (114) in the cutting direction. Tool holder ( 110 ) is inserted against the stop.

2. Tool carrier rotor ( 200 ) according to claim 1 , characterized in that the height (h) of the lower elevation ( 116 ) is between 10 and 30 % of the height (H) of the tool carrier ( 110 ) in the part which receives the fastening screw ( 121 ).

3. Tool (100) for a tool carrier rotor (200) for a crushing machine and / or a crusher according to one of the preceding claims, characterized in that it comprises a tool body (104) , - wherein the tool body ( 104 ) - has a cutting edge ( 101 ) which is located on the body on the front surface in the upper part , - a first central groove (106) on the lower surface of the tool body (104), wherein the first groove (106) has a depth (t) of 10 to 30% of the height of the tool (T), a second central groove (107) on the rear of the tool body (104), wherein the second groove (107) has a greater width than the first groove (106), and a projecting step (109) for receiving the tool holder 4. Tool according to the preceding claim, characterized in that the width of the lower groove b (106) of the tool (100) is between 50 and 80% of the width of the rear groove B (107) of the tool (100).

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