A feed arrangement for a defibrator and a defibrator

Abstract

The utility model discloses a kind of feeding device of wood chipper and wood chipper, and feeding device includes feed hopper;The rear end of feed hopper is equipped with first feeding roller and second feeding roller;First feeding roller includes first cylindrical roller body, further include multiple annular plates, each annular plate has multiple first tooth parts;Second feeding roller is rotatably installed on rotating frame, rotating frame is rotatably installed relative to feed hopper, and spring is connected between the two;Second feeding roller includes second cylindrical roller body, and the outside of second cylindrical roller body is installed with tooth plate and blade edge plate alternately;Second tooth part is arranged in the axial linear array of roller body on tooth plate, and the outer edge of blade edge plate has blade edge.The utility model in the present application, first feeding roller and second feeding roller adopt different structural design, can effectively prevent wood rolling in wood chip process, and can effectively prevent the action reaction force of wood chip mechanism during feeding process to cause wood to retreat, can realize the stable feeding of wood, improve operation stability and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wood chipper technology, and in particular to a feeding device for a wood chipper and a wood chipper. Background Technology

[0002] Wood chippers are widely used in forestry, landscaping, wood processing, and biomass energy. They are primarily used to break various woody materials such as branches, trunks, and planks into small pieces or wood chips for subsequent transportation, composting, combustion, or reprocessing. With increasing societal emphasis on resource recycling and environmental protection, wood chippers are playing an increasingly important role in urban greening maintenance, forest logging residue treatment, and comprehensive utilization of agricultural waste. Efficient wood chipping operations not only improve material handling efficiency but also significantly reduce labor and transportation costs. Therefore, optimizing wood chipper performance, especially feed stability and operational continuity, has become a key focus of technological research and development.

[0003] In existing technologies, most wood chippers commonly use a roller-type feeding mechanism. For example, patent CN217648574 U discloses a hydraulic feeding mechanism for a wood chipper, which includes a fixed feeding roller and a floating feeding roller. These rollers rotate synchronously in opposite directions via hydraulic drive to draw wood into the crushing chamber. In the aforementioned patent, the fixed and floating feeding rollers have the same structure, both including a cylindrical roller body and a circular array of cutting edge plates on the cylindrical roller body. When faced with wood of different diameters, irregular shapes, or with forks, this structure often makes it difficult for the feeding rollers to effectively clamp the wood, easily leading to slippage, jamming, or even reverse ejection, affecting the safety and stability of the equipment operation. Utility Model Content

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a feeding device for a wood chipper and a wood chipper that can effectively improve the feeding stability.

[0005] Technical solution: To achieve the above objectives, the feeding device of the wood chipper of this utility model includes a feeding hopper, which gradually narrows from front to back; a first feeding roller and a second feeding roller are installed at the rear end of the feeding hopper, and the two feeding rollers can open and close relatively elastically to adapt to different types of wood; the first feeding roller and the second feeding roller are driven by a first hydraulic motor and a second hydraulic motor, respectively. The first feed roller is rotatably mounted directly relative to the feed hopper; the first feed roller includes a first cylindrical roller body and a plurality of annular plates equidistantly arranged in the axial direction of the first cylindrical roller body, and the outer edge of each annular plate has a plurality of first teeth arranged in a circumferential array. The second feed roller is rotatably mounted on a rotating frame; the rotating frame is rotatably mounted relative to the feed hopper, and a spring connects the two; the second feed roller includes a second cylindrical roller body, and toothed plates and cutting edge plates are alternately mounted on the outer side of the second cylindrical roller body; the toothed plate has second teeth arranged in a straight array along the axial direction of the roller body, and the outer edge of the cutting edge plate has a cutting edge.

[0006] Furthermore, in the circumferential direction of the second cylindrical roller, the ratio of the number of toothed plates to the number of cutting edge plates is 2:1, that is, two toothed plates are provided between two adjacent cutting edge plates.

[0007] Furthermore, the feed hopper is also equipped with a fixing frame for mounting the first feed roller; the fixing frame includes a rear end plate, the rear end plate has a through groove for the wood to pass through; a guide rib is fixed on the rear end plate, and the rotating frame has a guide groove for the guide rib to be embedded in.

[0008] Furthermore, an adjusting screw is installed on the feed hopper, with one end of the adjusting screw connected to one end of the spring and the other end of the spring connected to the rotating frame.

[0009] Furthermore, a spiral tie rod is installed on the feed hopper, with one end of the spiral tie rod rotatably mounted on the outer wall of the feed hopper. The rotating frame has a connecting lug, which can be connected to the spiral tie rod via a pin. The spiral tie rod consists of two spirally connected rods. By rotating one of the rods with a pry bar, the spiral tie rod can be lengthened or shortened. During normal operation, the spiral tie rod is disengaged from the connecting lug. When material jamming occurs during the feeding process, the connection between the connecting lug and the spiral tie rod is established via the pin. Then, by rotating one rod of the spiral tie rod with a pry bar, the rotating frame can be lifted, easily resolving the jamming problem. The outer wall of the feed hopper has a fixing lug for fixing one end of the spiral tie rod. When no jamming occurs, the other end of the spiral tie rod is connected to the fixing lug via a pin.

[0010] Furthermore, the through groove is provided with multiple inwardly turned toothed flanges at the edge position corresponding to the first feed roller. All the toothed flanges are staggered with all the annular plates. In this way, the toothed flanges can clean the annular plates and prevent bark, branches and other materials from getting tangled on the first cylindrical roller.

[0011] A wood chipper includes a traction-type moving base on which the aforementioned feeding device is mounted. It also includes a wood chipping mechanism, a chip blowing mechanism, a gasoline engine, and a hydraulic system. The gasoline engine drives the wood chipping mechanism and the chip blowing mechanism. The hydraulic system includes an oil pump driven by the gasoline engine, a hydraulic oil tank, and a hydraulic control mechanism. The oil pump is connected to the hydraulic oil tank, and the oil pump is connected to a first hydraulic motor and a second hydraulic motor via the hydraulic control mechanism. The first and second hydraulic motors rotate in opposite directions to achieve feeding.

[0012] Furthermore, the wood chipping mechanism includes a wood chipper disc; the chip blowing mechanism includes a blower blade assembly coaxially fixedly installed with the wood chipper disc, and also includes a wood chip blower box with a discharge port; both the wood chipper disc and the blower blade assembly are placed inside the wood chip blower box.

[0013] Beneficial effects: The feeding device and the wood chipper of this utility model have the following beneficial effects: (1) In this utility model, the first feed roller and the second feed roller adopt different structural designs. The multiple toothed cutting edge plates on the first feed roller can prevent the wood from rolling while applying feeding force to the wood. The toothed plate and cutting edge plate on the second feed roller are arranged in an alternating manner, which can effectively prevent the wood from retreating due to the reaction force of the wood chipping mechanism during the feeding process. Therefore, the structure of the two feed rollers can be coordinated to achieve stable feeding of wood and improve the stability of operation and wood chipping efficiency.

[0014] (2) The rotating connection structure between the rotating frame and the feed hopper is reliable. By setting guide ribs to act on the guide groove on the rotating frame, the rotational stability of the rotating frame is maintained, and the rotating frame is prevented from shifting and deforming due to high-intensity feeding operations.

[0015] (3) By rotating the adjusting screw, the spring can be pre-stretched to set the pre-tension force, meet the feeding requirements of wood of different thicknesses, avoid insufficient feeding force, and avoid the situation where the wood is difficult to enter between the two feeding rollers. Attached Figure Description

[0016] Figure 1 This is a first-view structural diagram of the feeding device of a wood chipper; Figure 2 This is a second-view structural diagram of the feeding device of a wood chipper; Figure 3 This is a structural diagram of the combination of the first feed roller and the second feed roller; Figure 4 for Figure 1 Enlarged structural diagram of section A; Figure 5 This is a structural diagram of a wood chipper; Figure 6 Structural diagram of the wood chipping mechanism and the chip blowing mechanism; Figure 7 This is a structural diagram of the combined wood chipper disc and blower blade assembly.

[0017] In the diagram: 1-Feed hopper; 1a-Fixed ear; 2-First feed roller; 21-First cylindrical roller body; 22-Annular plate; 3-Second feed roller; 31-Second cylindrical roller body; 32-Toothed plate; 33-Cutting edge plate; 4-First hydraulic motor; 5-Second hydraulic motor; 6-Rotating frame; 6a-Guide groove; 6b-Connecting ear; 7-Fixed frame; 71-Rear end plate; 7a-Through groove; 7b-Toothed flange; 72-Guide rib; 8-Adjusting screw; 9-Spring; 10-Spiral tie rod; 11-Pin; 20-Traction type moving seat; 30-Wood chipping mechanism; 40-Wood chip blowing mechanism; 41-Blower blade assembly; 42-Wood chipping blower box; 50-Gas engine; 60-Hydraulic system; 61-Oil pump; 62-Hydraulic oil tank; 63-Hydraulic control mechanism. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 The feeding device of the wood chipper shown includes a feeding hopper 1, which gradually narrows from front to back; a first feeding roller 2 and a second feeding roller 3 are installed at the rear end of the feeding hopper 1, and the two feeding rollers can open and close relatively elastically to accommodate different types of wood; the first feeding roller 2 and the second feeding roller 3 are driven by a first hydraulic motor 4 and a second hydraulic motor 5, respectively.

[0020] The first feed roller 2 is rotatably mounted directly relative to the feed hopper 1; as Figure 3 As shown, the first feed roller 2 includes a first cylindrical roller body 21 and a plurality of annular plates 22 equidistantly arranged in the axial direction of the first cylindrical roller body 21. Each annular plate 22 has a plurality of first teeth arranged in a circumferential array on its outer edge.

[0021] The second feed roller 3 is rotatably mounted on the rotating frame 6; the rotating frame 6 is rotatably mounted relative to the feed hopper 1, and a spring 9 is connected between the two; the second feed roller 3 includes a second cylindrical roller body 31, and toothed plates 32 and cutting edge plates 33 are alternately mounted on the outer side of the second cylindrical roller body 31; the toothed plates 32 have second teeth arranged in a straight array along the axial direction of the roller body, and the outer edge of the cutting edge plate 33 has a cutting edge.

[0022] Preferably, in the circumferential direction of the second cylindrical roller 31, the ratio of the number of toothed plates 32 to the number of cutting edge plates 33 is 2:1, that is, two toothed plates 32 are provided between two adjacent cutting edge plates 33. During operation, the cutting edge plates 33 and toothed plates 32 act alternately on the wood being chopped. The cutting edge plates 33 play a role in preventing backward movement, while the toothed plates 32 have good durability. The alternating action of the two can protect the cutting edge of the cutting edge plates 33.

[0023] In this invention, the first feed roller 2 and the second feed roller 3 adopt different structural designs. The multiple toothed cutting edge plates 33 on the first feed roller 2 can prevent the wood from rolling while applying feeding force to the wood. The staggered arrangement of the toothed plates 32 and cutting edge plates 33 on the second feed roller 3 can effectively prevent the wood from retreating due to the reaction force of the wood chipping mechanism during the feeding process. Therefore, the structural cooperation of the two feed rollers can achieve stable feeding of wood, improve the stability of operation and the efficiency of wood chipping.

[0024] Preferably, the feed hopper 1 is further equipped with a fixing frame 7 for mounting the first feed roller 2; the fixing frame 7 includes a rear end plate 71, the rear end plate 71 having a through groove 7a for the wood to pass through; a guide rib 72 is fixed on the rear end plate 71, and the rotating frame 6 has a guide groove 6a for the guide rib 72 to be embedded in. The rotational connection structure between the rotating frame 6 and the feed hopper 1 is reliable. By setting the guide rib 72 to act on the guide groove 6a on the rotating frame 6, the rotational stability of the rotating frame 6 is maintained, preventing the rotating frame 6 from shifting or deforming due to high-intensity feeding operations.

[0025] Preferably, an adjusting screw 8 is installed on the feed hopper 1, with one end of the adjusting screw 8 connected to one end of the spring 9 and the other end of the spring 9 connected to the rotating frame 6. By rotating the adjusting screw 8, the spring 9 can be pre-stretched to set a pre-tension force, meeting the feeding requirements of wood of different thicknesses, avoiding insufficient feeding force, and preventing the wood from having difficulty entering between the two feed rollers.

[0026] Preferably, a spiral tie rod 10 is installed on the feed hopper 1, with one end of the spiral tie rod 10 rotatably mounted on the outer wall of the feed hopper 1; the rotating frame 6 has a connecting ear 6b, which can be connected to the spiral tie rod 10 via a pin 11. The spiral tie rod 10 consists of two spirally connected rods. By rotating one of the rods with a pry bar, the spiral tie rod 10 can be lengthened or shortened. During normal operation, the spiral tie rod 10 is disengaged from the connecting ear 6b. When material jamming occurs during the feeding process, the connection between the connecting ear 6b ​​and the spiral tie rod 10 is established through the pin 11. Then, by rotating one rod of the spiral tie rod 10 with a pry bar, the rotating frame 6 can be lifted, easily resolving the material jamming problem. The outer wall of the feed hopper 1 has a fixing ear 1a for fixing one end of the spiral tie rod 10. When no material jamming occurs, the other end of the spiral tie rod 10 is connected to the fixing ear 1a via the pin 11.

[0027] Preferably, such as Figure 4 As shown, the through groove 7a is provided with multiple inwardly turned toothed flanges 7b at the edge position corresponding to the first feed roller 2. All the toothed flanges 7b are staggered with all the annular plates 22. In this way, the toothed flanges 7b can clean the annular plates 22 and prevent bark, branches and other materials from getting tangled on the first cylindrical roller 21.

[0028] like Figure 5 The wood chipper shown includes a traction-type moving base 20, on which the aforementioned feeding device is mounted. It also includes a wood chipping mechanism 30, a chip blowing mechanism 40, a gasoline engine 50, and a hydraulic system 60. The gasoline engine 50 drives the wood chipping mechanism 30 and the chip blowing mechanism 40. The hydraulic system 60 includes an oil pump 61 driven by the gasoline engine 50, a hydraulic oil tank 62, and a hydraulic control mechanism 63. The oil pump 61 is connected to the hydraulic oil tank 62, and is connected to a first hydraulic motor 4 and a second hydraulic motor 5 via the hydraulic control mechanism 63. The first hydraulic motor 4 and the second hydraulic motor 5 rotate in opposite directions to achieve feeding. The hydraulic control mechanism 63 includes a control valve to control the start and stop of both the first hydraulic motor 4 and the second hydraulic motor 5.

[0029] The wood chipping mechanism 30 includes a wood chipper disc; such as Figure 7 As shown, the wood chipping mechanism 40 includes a blower blade assembly 41 coaxially fixedly mounted with the wood chipper disc, and a wood chipping blower box 42 with a discharge port; both the wood chipper disc and the blower blade assembly 41 are placed inside the wood chipping blower box 42. Figure 6 As shown, the wood chipping blower box 42 has a wood inlet. After the wood enters the wood inlet, the wood chipping mechanism 30 acts on the wood to chip it into chips, which are then blown out of the wood chipping blower box 42 by the blower blade assembly 41.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A feeding device for a wood chipper, comprising a feeding hopper (1) that gradually narrows from front to back; a first feeding roller (2) and a second feeding roller (3) are installed at the rear end of the feeding hopper (1), the two feeding rollers being able to open and close elastically relative to each other; the first feeding roller (2) and the second feeding roller (3) are respectively driven by a first hydraulic motor (4) and a second hydraulic motor (5); characterized in that: The first feed roller (2) is rotatably mounted directly relative to the feed hopper (1); the first feed roller (2) includes a first cylindrical roller body (21) and a plurality of annular plates (22) equidistantly arranged in the axial direction of the first cylindrical roller body (21), and each annular plate (22) has a plurality of first teeth arranged in a circumferential array on its outer edge; The second feed roller (3) is rotatably mounted on the rotating frame (6); the rotating frame (6) is rotatably mounted relative to the feed hopper (1), and a spring (9) is connected between the two; the second feed roller (3) includes a second cylindrical roller body (31), and toothed plates (32) and cutting edge plates (33) are alternately mounted on the outer side of the second cylindrical roller body (31); the toothed plates (32) have second teeth arranged in a straight array along the axial direction of the roller body, and the outer edge of the cutting edge plate (33) has a cutting edge.

2. The feeding device for the wood chipper according to claim 1, characterized in that, In the circumferential direction of the second cylindrical roller (31), the ratio of the number of toothed plates (32) to the number of cutting edge plates (33) is 2:

1.

3. The feeding device for the wood chipper according to claim 1, characterized in that, The feed hopper (1) is also equipped with a fixing frame (7) for mounting the first feed roller (2); the fixing frame (7) includes a rear end plate (71), the rear end plate (71) has a through groove (7a) for wood to pass through; a guide rib (72) is fixed on the rear end plate (71), and the rotating frame (6) has a guide groove (6a) for the guide rib (72) to be embedded.

4. The feeding device for the wood chipper according to claim 1, characterized in that, An adjusting screw (8) is installed on the feed hopper (1). One end of the adjusting screw (8) is connected to one end of the spring (9), and the other end of the spring (9) is connected to the rotating frame (6).

5. The feeding device for the wood chipper according to claim 1, characterized in that, A spiral pull rod (10) is installed on the feed hopper (1), and one end of the spiral pull rod (10) is rotatably installed on the outer wall of the feed hopper (1); the rotating frame (6) has a connecting ear (6b), and the connecting ear (6b) can be connected to the spiral pull rod (10) through a pin (11).

6. The feeding device for the wood chipper according to claim 3, characterized in that, The through groove (7a) is provided with a plurality of inwardly turned toothed flanges (7b) at the edge position corresponding to the first feed roller (2), and all the toothed flanges (7b) are staggered with all the annular plates (22).

7. A wood chipper, characterized in that, It includes a traction-type moving seat (20), on which a feeding device according to any one of claims 1-6 is installed, and further includes a wood chipping mechanism (30), a chip blowing mechanism (40), a gasoline engine (50), and a hydraulic system (60); the gasoline engine (50) drives the wood chipping mechanism (30) and the chip blowing mechanism (40) to operate; the hydraulic system (60) includes an oil pump (61) driven by the gasoline engine (50), and further includes a hydraulic oil tank (62) and a hydraulic control mechanism (63); the oil pump (61) is connected to the hydraulic oil tank (62), and the oil pump (61) is connected to the first hydraulic motor (4) and the second hydraulic motor (5) through the hydraulic control mechanism (63).

8. The wood chipper according to claim 7, characterized in that, The wood chipping mechanism (30) includes a wood chipper disc; the chip blowing mechanism (40) includes a blower blade assembly (41) coaxially fixedly installed with the wood chipper disc, and also includes a wood chip blower box (42) with a discharge port; the wood chipper disc and the blower blade assembly (41) are both placed inside the wood chip blower box (42).

Images