Double-cutter branch crusher

Abstract

The utility model provides a double-cutter branch crusher. The double-cutter branch crusher comprises a machine frame, a machine shell, a driving motor and a material receiving barrel. The machine shell is fixed to the upper end of the machine frame, the driving motor is fixed inside the machine shell, the material receiving barrel is connected to the inner side of the machine frame and located below the machine shell, a smashing cavity is formed in the inner side of the machine shell, the upper end of the smashing cavity is communicated with a feeding port located in the upper end of the machine shell, and the lower end of the smashing cavity is communicated with the material receiving barrel. Two hobbing cutters which are in bilateral symmetry and are in clearance fit are arranged in the crushing cavity, the two ends of the two hobbing cutters in the axial direction are rotationally connected with the machine shell, the feeding port is located above the gap between the two hobbing cutters, and the two hobbing cutters are in transmission connection with the driving motor and are opposite in rotation direction; when the two hobs rotate relatively, the branch smashing efficiency can be improved, and the branch smashing effect of the branch smashing machine can be improved.

Description

Double-blade wood chipper Technical Field

[0001] This utility model relates to the field of wood chipper technology, and more specifically, to a double-blade wood chipper. Background Technology

[0002] A branch shredder is a device used to shred branches. Currently, branch shredders on the market mainly consist of a frame, a housing, a drive motor, and a receiving hopper. The housing is fixed to the upper end of the frame, the drive motor is fixed inside the housing, and the receiving hopper is connected to the inner side of the frame and located below the housing. A shredding chamber is set inside the housing. The upper end of the shredding chamber is connected to the feed inlet located at the upper end of the housing, and the lower end of the shredding chamber is connected to the receiving hopper. A shredding roller is rotatably connected inside the shredding chamber, and the shredding roller is driven by the drive motor. However, in the existing branch shredder structure, only one shredding roller is set in the shredding chamber, that is, the existing branch shredder is a single shredding blade structure. As a result, during the use of the branch shredder, there are problems such as low shredding efficiency and incomplete shredding of branches. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a double-blade branch shredder, which can improve the shredding efficiency of branches and the shredding effect of the branch shredder when the two rollers rotate relative to each other.

[0004] This utility model provides a double-blade wood chipper, including a frame, a housing, a drive motor, and a receiving hopper. The housing is fixed to the upper end of the frame, the drive motor is fixed inside the housing, and the receiving hopper is connected to the inner side of the frame and located below the housing. A crushing chamber is provided inside the housing, the upper end of which is connected to the feed inlet located at the upper end of the housing, and the lower end of which is connected to the receiving hopper. Two symmetrical roller blades with a clearance fit are provided in the crushing chamber. Both ends of the two roller blades are rotatably connected to the housing in the axial direction. The feed inlet is located above the gap between the two roller blades. Both roller blades are driven by the drive motor and rotate in opposite directions.

[0005] By adopting a double-roller structure, this invention improves the shredding efficiency of branches and enhances the shredding effect of the branch shredder when the two rollers rotate relative to each other.

[0006] In one possible implementation, driven gears are coaxially sleeved and fixed at the rear ends of both rollers, and the two driven gears mesh with each other. A reduction gear set is provided inside the housing. The input end of the reduction gear set meshes with the driving gear located on the output shaft of the drive motor, and the output end of the reduction gear set meshes with one of the driven gears. With this structure, since the two rollers are connected to the drive motor through the driven gears, the reduction gear set, and the driving gear, the power transmission is stable and reliable. Furthermore, under the action of the reduction gear set, the torque of the rollers can be increased, thereby enabling the two rollers to reliably crush the branches.

[0007] In one possible implementation, the reduction gear set includes multiple progressively connected reduction gear units; each reduction gear unit includes a drive gear and a gear shaft, one end of each gear shaft is coaxially inserted into the drive gear in the corresponding reduction gear unit and circumferentially limited by the drive gear, and the other end of each gear shaft is provided with a gear portion with an outer diameter smaller than that of the drive gear, and each drive gear is rotatably connected to the housing via the gear shaft; the drive gear in the first reduction gear unit meshes with the drive gear, the gear portion on the gear shaft in the last reduction gear unit meshes with one of the driven gears, and the drive gears in the subsequent reduction gear unit mesh with the gear portions on the gear shaft in the previous reduction gear unit; by using this reduction gear set, the power of the drive motor can be reliably transmitted to the two roller cutters through multiple reduction gear units, that is, the two roller cutters can reliably rotate relative to each other and reliably crush the branches. In addition, since the multiple reduction gear units are progressively connected, the torque of the roller cutters can be effectively increased, so that the two roller cutters can further reliably crush the branches.

[0008] In one possible implementation, both ends of each gear shaft are inserted into one of the metal support plates located inside the housing and are rotatably connected to the metal support plate. With this structure, the metal support plate can reliably support the gear shaft, that is, it can effectively avoid the gear shaft from being eccentric, thereby enabling the reduction gear set to reliably transmit the power from the drive motor to the two hobs.

[0009] In one possible implementation, each hob has a support shaft coaxially inserted, each hob is fixed to and circumferentially limited by its corresponding support shaft, each driven gear is coaxially sleeved and fixed to one end of its corresponding support shaft, and both ends of each support shaft are rotatably connected to the housing via bearings. With this structure, both ends of each support shaft can be reliably rotatably connected to the housing via bearings, and the rotational friction between the support shaft and the housing can be overcome to avoid wear between the support shaft and the housing.

[0010] In one possible implementation, each bearing is axially embedded in one of the metal support plates located inside the housing; with this structure, the metal support plate can provide reliable support for the bearing, thereby effectively preventing the support shaft from becoming eccentric, that is, effectively preventing the two rollers from becoming eccentric, so that the two rollers can reliably crush the branches. Attached Figure Description

[0011] Figure 1 is a three-dimensional structural diagram of this utility model;

[0012] Figure 2 is a partially exploded three-dimensional structural diagram of the present invention;

[0013] Figure 3 is a three-dimensional structural diagram of the present invention after part of the casing has been removed. Detailed Implementation

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Referring to Figures 1-3, this application discloses a double-blade wood chipper, including a frame 1, a housing 2, a drive motor 3, and a receiving hopper 4. The housing 2 is fixed to the upper end of the frame 1, the drive motor 3 is fixed inside the housing 2, and the receiving hopper 4 is connected to the inner side of the frame 1 and located below the housing 2. A crushing chamber 21 is provided on the inner side of the housing 2. The upper end of the crushing chamber 21 is connected to the feed inlet 22 located at the upper end of the housing 2, and the lower end of the crushing chamber 21 is connected to the receiving hopper 4. Two symmetrical roller blades 5 are provided in the crushing chamber 21 with a gap fit. Both ends of the two roller blades 5 in the axial direction are rotatably connected to the housing 2. The feed inlet 22 is located above the gap between the two roller blades 5. Both roller blades 5 are driven by the drive motor 3 and rotate in opposite directions.

[0019] Both rollers 5 have driven gears 6 coaxially sleeved and fixed at their rear ends. The two driven gears 6 mesh with each other. A reduction gear set is set inside the housing 2. The input end of the reduction gear set meshes with the driving gear 31 located on the output shaft of the drive motor 3, and the output end of the reduction gear set meshes with one of the driven gears 6. With this structure, since the two rollers are connected to the drive motor through the driven gears, the reduction gear set and the driving gear, it has the advantage of stable and reliable power transmission. Under the action of the reduction gear set, the torque of the rollers can be increased, so that the two rollers can reliably crush the branches.

[0020] The reduction gear set includes multiple progressively connected reduction gear units; each reduction gear unit includes a drive gear 71 and a gear shaft 72. One end of each gear shaft 72 is coaxially inserted into the drive gear 71 in the corresponding reduction gear unit and is circumferentially limited by the drive gear 71. The other end of each gear shaft 72 is provided with a gear portion 721 with an outer diameter smaller than that of the drive gear 71. Each drive gear 71 is rotatably connected to the housing 2 via the gear shaft 72. The drive gear 71 in the first reduction gear unit meshes with the drive gear 31, and the gear shaft in the last reduction gear unit... The gear 721 on 72 meshes with one of the driven gears 6, and the transmission gears 71 in the subsequent reduction gear unit mesh with the gear 721 on the gear shaft 72 in the previous reduction gear unit. By adopting this reduction gear set, the power of the drive motor can be reliably transmitted to the two rollers through multiple reduction gear units, which enables the two rollers to reliably rotate relative to each other and reliably crush the branches. In addition, since multiple reduction gear units are connected in a step-by-step transmission, the torque of the rollers can be effectively increased, so that the two rollers can further reliably crush the branches.

[0021] Both ends of each gear shaft 72 are inserted into one of the metal support plates 8 located inside the housing 2 and are rotatably connected to the metal support plate 8. With this structure, the metal support plate can reliably support the gear shaft, that is, it can effectively avoid the gear shaft from being eccentric, so that the reduction gear set can reliably transmit the power from the drive motor to the two hobs.

[0022] Each hob 5 has a support shaft 9 coaxially inserted in it. Each hob 5 is fixed to the corresponding support shaft 9 and circumferentially limited. Each driven gear 6 is coaxially sleeved and fixed on one end of the corresponding support shaft 9. Both ends of each support shaft 9 are rotatably connected to the housing 2 through bearings 91. With this structure, both ends of each support shaft can be reliably rotatably connected to the housing through bearings, and the rotational friction between the support shaft and the housing can be overcome to avoid wear between the support shaft and the housing.

[0023] Each bearing 91 is axially embedded in one of the metal support plates 8 located inside the housing 2. With this structure, the metal support plate can provide reliable support for the bearing, thereby effectively preventing the support shaft from becoming eccentric, which in turn can effectively prevent the two rollers from becoming eccentric, so that the two rollers can reliably crush the branches.

[0024] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A double-blade wood chipper, comprising a frame (1), a housing (2), a drive motor (3), and a receiving hopper (4); the housing (2) is fixed to the upper end of the frame (1), the drive motor (3) is fixed inside the housing (2), the receiving hopper (4) is connected to the inner side of the frame (1) and located below the housing (2), a crushing chamber (21) is provided on the inner side of the housing (2), the upper end of the crushing chamber (21) is connected to the feed inlet (22) located at the upper end of the housing (2), and the lower end of the crushing chamber (21) is connected to the receiving hopper (4); characterized in that: The crushing chamber (21) is provided with two symmetrical roller cutters (5) with a gap fit. Both ends of the two roller cutters (5) in the axial direction are rotatably connected to the housing (2). The feed port (22) is located above the gap between the two roller cutters (5). Both roller cutters (5) are connected to the drive motor (3) and rotate in opposite directions.

2. The two-bladed brush chipper of claim 1, wherein: Both of the two hobs (5) are coaxially fitted with driven gears (6) at their rear ends. The two driven gears (6) mesh with each other. A reduction gear set is provided inside the housing (2). The input end of the reduction gear set meshes with the drive gear (31) located on the output shaft of the drive motor (3). The output end of the reduction gear set meshes with one of the driven gears (6).

3. The two-bladed brush chipper of claim 2, wherein: The reduction gear set includes multiple reduction gear units connected in a step-by-step transmission; each reduction gear unit includes a transmission gear (71) and a gear shaft (72), one end of each gear shaft (72) is coaxially inserted into the transmission gear (71) in the corresponding reduction gear unit and is circumferentially limited by the transmission gear (71), the other end of each gear shaft (72) is provided with a gear part (721) with an outer diameter smaller than that of the transmission gear (71), each transmission gear (71) is rotatably connected to the housing (2) through the gear shaft (72); the transmission gear (71) in the first reduction gear unit meshes with the driving gear (31), the gear part (721) on the gear shaft (72) in the last reduction gear unit meshes with one of the driven gears (6), and the transmission gear (71) in the next stage reduction gear unit meshes with the gear part (721) on the gear shaft (72) in the previous stage reduction gear unit.

4. The two-bladed brush chipper of claim 3, wherein: Both ends of each gear shaft (72) are inserted into one of the metal support plates (8) located inside the housing (2) and are rotatably connected to the metal support plate (8).

5. The double-blade wood chipper according to any one of claims 2-4, characterized in that: Each of the hobs (5) is coaxially fitted with a support shaft (9), each of the hobs (5) is fixed to the corresponding support shaft (9) and circumferentially limited, each of the driven gears (6) is coaxially sleeved and fixed on one end of the corresponding support shaft (9), and both ends of each support shaft (9) are rotatably connected to the housing (2) through bearings (91).

6. The double-blade wood chipper according to claim 5, characterized in that: Each of the bearings (91) is axially embedded in one of the metal support plates (8) located inside the housing (2).

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