A wood chipper with an upper cover that is easy to open

Abstract

The utility model discloses a kind of wood chipper with upper cover of being convenient to open, including cutter box, upper cover is installed on cutter box, several U-shaped holes are opened in the left side of upper cover, the position corresponding with U-shaped hole, fixed block is installed on cutter box 1, and fixed block is connected between U-shaped hole through quick release assembly, quick release assembly includes fixed screw rod, and fixed screw rod lower part is connected with fixed block through connecting rod, fixed screw rod upper portion installs cylindrical nut, and cylindrical nut upper portion slidingly installs movable rod, movable rod is telescopic rod, and upper cover can be opened or fixed without special tool, upper cover and cutter box fixed component can also be prevented from losing simultaneously;Photoelectric switch is installed on the left side outer wall upper portion of cutter box, and quick release assembly is twisted and loosened and will block the transmission route of the emission end and receiving end signal of photoelectric switch, and the power supply of external power device is cut off by photoelectric switch, when upper cover is opened, it is ensured that comminution cutter disc does not rotate, and the risk of further reducing personnel injury.

Description

Technical Field

[0001] This utility model relates to the field of agricultural and garden machinery technology, and in particular to a wood chipper with an easy-to-open top cover. Background Technology

[0002] During the wood chipping process, to prevent wood chips from accumulating inside the blade box and damaging the cutter disc, the blade box needs to be cleaned frequently. This typically requires removing the fastening bolts of the top cover of the wood chipper, then rotating the top cover upwards and placing it above the feed inlet. Opening the top cover requires specialized tools, is time-consuming and labor-intensive, and the removed bolts and nuts must be carefully placed. The top cover is rotated nearly 180° and placed above the feed inlet. After cleaning the blade box, the top cover must be placed back in place, and the fastening bolts must be installed using specialized tools to secure it. The entire operation is cumbersome and troublesome. Utility Model Content

[0003] The purpose of this invention is to provide a wood chipper with an easy-to-open top cover in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A wood chipper with an easy-to-open top cover includes a blade box, an inlet fixedly installed on the right side of the blade box, an outlet on the left side of the blade box, a rotatable crushing disc installed inside the blade box, a shaft of the crushing disc passing through the blade box wall and connected to a power unit, a top cover installed on the upper part of the blade box, the upper right side of the top cover being connected to the blade box via a hinge, several U-shaped holes on the left side of the top cover, a fixing block fixedly installed on the blade box at the position corresponding to the U-shaped holes, and a quick-release assembly installed between the fixing block and the U-shaped holes.

[0006] Furthermore, the quick-release assembly includes a fixing screw with a through hole at the bottom and threads at the top. A corresponding through hole is also present on the fixing block. A connecting rod is slidably installed in the through holes of the fixing screw and the fixing block. Fastening components are connected to both ends of the connecting rod to prevent it from sliding out of the through holes of the fixing screw and the fixing block. A cylindrical nut is installed at the threaded end of the fixing screw. A movable rod is slidably installed on the part of the cylindrical nut away from the fixing screw. The rotational torque of the cylindrical nut can be adjusted by sliding the movable rod. After loosening the cylindrical nut and rotating the quick-release assembly downwards with the connecting rod as the axis, the top cover can be opened.

[0007] Furthermore, a support assembly is provided on the side wall of the top cover and the tool box to support the opened top cover. The support assembly includes a support plate, which is rotatably mounted on the side wall of the top cover. The support plate has a slot, which is zigzag-shaped. On the side wall of the tool box, a fixing post is fixedly installed at the position corresponding to the slot, and the fixing post is slidably installed in the slot.

[0008] Furthermore, the movable rod is a telescopic rod that can be shortened into the through hole of the cylindrical nut. Anti-drop blocks are provided at both ends of the movable rod, and the anti-drop blocks are detachably installed at both ends of the through hole of the cylindrical nut.

[0009] Furthermore, a photoelectric switch is installed on the upper part of the left outer wall of the knife box. The photoelectric switch is connected to the power supply of the external power unit. When the signal transmission path of the photoelectric switch's transmitting and receiving ends is blocked, the photoelectric switch will cut off the power supply of the external power unit. When the quick-release assembly is loosened and rotated downwards to hang down with the connecting rod as support, it will block the signal transmission path of the photoelectric switch's transmitting and receiving ends.

[0010] Furthermore, the fixing screw is a hinged bolt, and the cylindrical nut is a hexagonal head or a cylindrical nut.

[0011] Furthermore, a handle is fixedly installed on the top cover.

[0012] The beneficial effects are:

[0013] 1. A movable rod is slidably installed on the cylindrical nut in the quick-release assembly. When opening or fixing the top cover, by sliding the movable rod, one end of the movable rod abuts against the cylindrical nut, while the other end of the movable rod moves away from the cylindrical nut. This increases the rotational torque of the cylindrical nut, allowing workers to tighten or loosen the cylindrical nut without using professional tools, making it easier to fix or open the top cover.

[0014] 2. Support components are provided on the side walls of the upper part and the tool box. The support plate and the fixed column can slide to the lower end of the slot through the fixed column. The support plate and the fixed column can easily support the upper cover. The structure is simple, stable and reliable.

[0015] 3. A photoelectric switch is installed on the upper part of the outer wall on the left side of the blade box. The photoelectric switch is connected to the power supply of the external power unit. When the columnar nut is loosened and the quick-release assembly hangs down with the connecting rod as support, the quick-release assembly will block the signal transmission path of the transmitter and receiver of the photoelectric switch. The photoelectric switch cuts off the power supply of the external power unit, ensuring that the crushing blade will not rotate when the top cover is opened, further reducing the risk of personnel injury.

[0016] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This utility model provides a schematic diagram of the open state of a wood chipper cover that is easy to open;

[0019] Figure 2 This utility model provides a schematic diagram of the fixed state of a wood chipper cover that is easy to open;

[0020] Figure 3 This is a schematic diagram of a quick-release assembly for a wood chipper with an easy-to-open top cover provided by this utility model;

[0021] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0022] The following are the annotations in the attached diagram: 1. Knife box; 2. Feed inlet; 3. Top cover; 4. Discharge outlet; 5. U-shaped hole; 6. Fixing block; 7. Quick release assembly; 8. Support plate; 9. Slot; 10. Fixing screw; 11. Movable rod; 12. Anti-drop block; 13. Connecting rod; 14. Fixing column; 15. Photoelectric switch; 16. Columnar nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1 to 4 As shown, a wood chipper with an easily openable top cover includes a blade box 1. A feed inlet 2 is fixedly installed on the right side of the blade box 1, and a discharge outlet 4 is opened on the left side of the blade box 1. A crushing disc is rotatably installed inside the blade box 1. The crushing disc shaft is mounted on the wall of the blade box 1 through bearings and bearing seats. The crushing disc shaft passes through the wall of the blade box 1 and is connected to a power unit. When the wood chipper is working, the wood enters the blade box 1 from the feed inlet 2 on the right side. The external power unit drives the crushing disc to rotate, cutting and crushing the wood in the blade box 1. The crushed wood chips are discharged from the discharge outlet 4 on the left side.

[0027] A top cover 3 is installed on the upper part of the tool box 1. The upper right side of the top cover 3 is connected to the tool box 1 via a hinge. A handle is fixedly installed on the top cover 3. Several U-shaped holes 5 are opened on the left side of the top cover 3. The U-shaped holes 5 are connected to the left end face of the top cover 3. At each position corresponding to the U-shaped hole 5, two fixing blocks 6 are fixedly installed on the tool box 1. The fixing blocks 6 are located on both sides of the lower part of the U-shaped hole 5. The fixing blocks 6 have corresponding through holes. The fixing blocks 6 are connected to the U-shaped holes 5 via a quick-release assembly 7.

[0028] The quick-release assembly 7 includes a fixing screw 10, which has a through hole at the bottom and a thread at the top. The fixing screw 10 can be a hinged bolt. The end of the fixing screw 10 with the hole is installed between two fixing blocks 6. A connecting rod 13 is slidably installed in the through hole of the fixing screw 10. After the two ends of the connecting rod 13 pass through the through holes of the fixing blocks 6 on both sides, they are connected and fastened to prevent it from slipping out of the through holes of the fixing blocks 6. A cylindrical nut 16 is installed on the threaded end of the fixing screw 10. The cylindrical nut 16 can be a hexagonal head or a cylindrical nut. The part of the cylindrical nut 16 away from the fixing screw 10 has a through hole. A movable rod 11 is slidably installed in the through hole. The movable rod 11 is a telescopic rod that can extend and retract in its axial direction. Anti-drop blocks 12 are provided at both ends of the movable rod 11. When the movable rod 11 is shortened in the axial direction, it can be retracted into the through hole of the cylindrical nut 16. At this time, the anti-drop blocks 12 can be fixed at both ends of the through hole of the cylindrical nut 16.

[0029] In one embodiment, the cylindrical nut 16 has a threaded hole, and the anti-drop block 12 also has a matching thread on the side near the cylindrical nut 16. The two anti-drop blocks 12 are detachably installed at both ends of the cylindrical nut 16 through the thread.

[0030] In another embodiment, the anti-drop block 12 has a toothed annular thin-walled structure on the side near the cylindrical nut 16, and the two anti-drop blocks 12 can be directly inserted into the two ends of the through hole of the cylindrical nut 16.

[0031] When the top cover 3 and the tool box 1 need to be fixed, the threaded part of the fixing screw 10 passes through the U-shaped hole 5, removes the anti-drop block 12 from the through hole of the column nut 16, stretches the movable rod 11, and slides the movable rod 11 to adjust the rotational torque of the column nut 16. The operator can then tighten the column nut 16 without using special tools to fix the top cover 3 and the tool box 1.

[0032] When it is necessary to open the top cover 3, the anti-drop block 12 is removed from the through hole of the cylindrical nut 16, the movable rod 11 is stretched, and the movable rod 11 is slid to adjust the rotational torque of the cylindrical nut 16. The operator can then loosen the cylindrical nut 16 without using special tools. At this time, it is not necessary to unscrew the cylindrical nut 16 from the fixing screw 10. The cylindrical nut 16 only needs to be moved a certain distance away from the U-shaped hole 5, so that the quick-release assembly 7 can be rotated downward with the connecting rod 13 as the axis. The fixing screw 10 slides out from the opening of the U-shaped hole 5, and the quick-release assembly 7 hangs down due to gravity, supported by the connecting rod 13. This achieves the purpose of quickly opening the top cover 3. This design does not require the use of special tools, and it is convenient and quick to open or fix the top cover 3. At the same time, it can also prevent the loss of the fixing parts of the top cover 3 and the tool box 1.

[0033] It should be noted that when the top cover 3 is opened, the pulverizing disc inside the blade box 1 must stop rotating to prevent injury. A photoelectric switch 15 is installed on the upper part of the left outer wall of the blade box 1. The photoelectric switch 15 is connected to the power supply of the external power device. The photoelectric switch 15 is divided into a transmitter and a receiver. The transmitter of the photoelectric switch 15 is installed on one side of the upper part of the left outer wall of the blade box 1, and the receiver of the photoelectric switch 15 is installed on the other side of the upper part of the left outer wall of the blade box 1. When the signal transmission path of the transmitter and receiver of the photoelectric switch 15 is blocked, that is, when the receiver cannot receive the signal emitted by the transmitter, the photoelectric switch 15 will cut off the power supply of the external power device, causing the pulverizing disc to stop rotating.

[0034] It is understandable that when the top cover 3 is needed, the cylindrical nut 16 is loosened and the quick-release assembly 7 is rotated downwards. The quick-release assembly 7 hangs down with the connecting rod 13 as support. At this time, the quick-release assembly 7 will block the signal transmission path of the transmitter and receiver of the photoelectric switch 16. The photoelectric switch 15 will cut off the power supply of the external power unit, ensuring that the crushing disc will not rotate when the top cover 3 is opened, further reducing the risk of personnel injury.

[0035] To facilitate support of the opened top cover 3, a support assembly is provided on the side walls of the top cover 3 and the tool box 1. The support assembly includes a support plate 8, which is rotatably mounted on the side wall of the top cover 3. The support plate 8 has a slot 9, which is zigzag-shaped, with the lower part of the slot 9 tilting upward from the zigzag connection point. On the side wall of the tool box 1, a fixing post 14 is fixedly installed at a position corresponding to the slot 9, and the fixing post 14 is slidably installed in the slot 9. During the upward rotation and opening of the top cover 3, the fixing post 14 slides in the slot 9. When the fixing post 14 slides to the zigzag connection position of the slot 9, the support plate 8 is pressed down clockwise, so that the fixing post 14 is engaged with the lower zigzag end of the slot 9. In this way, the top cover 3 can be easily supported by the support plate 8 and the fixing post 14.

[0036] Working principle: When the top cover 3 needs to be opened, the operator removes the anti-drop block 12 from the through hole of the cylindrical nut 16, stretches the movable rod 11, and slides the movable rod 11 to increase the rotational torque of the cylindrical nut 16. The cylindrical nut 16 is then loosened. When the lower end of the cylindrical nut 16 is a certain distance away from one end of the U-shaped hole 5, the quick-release assembly 7 is rotated downwards around the connecting rod 13 as an axis. The fixing screw 10 slides out from the opening of the U-shaped hole 5. The quick-release assembly 7 hangs downwards supported by the connecting rod 13. The connecting rod 13 retracts, causing the quick-release assembly 7 to block the signal transmission path between the transmitter and receiver of the photoelectric switch 16. The photoelectric switch 15 then cuts off the power to the external power unit, ensuring that the pulverizing disc does not rotate when the top cover 3 is opened. Then, the handle on the top cover 3 is pulled upwards. As the top cover 3 rotates upwards, the fixing column 14... As the fixed post 14 slides into the slot 9 and gradually slides to the folded line connection position of the slot 9, the support plate 8 is pressed down clockwise, so that the fixed post 14 is locked into the lower folded line end of the slot 9. The support plate 8 and the fixed post 14 cooperate to support the upper cover 3. Correspondingly, when it is necessary to fix the upper cover 3 to the tool box 1, the operator pulls up the handle on the upper cover 3 and lifts the support plate 8 counterclockwise, so that the fixed post 14 slides out from the lower folded line position of the slot 9. The support plate 8 slides down relative to the fixed post 14, and the upper cover 3 rotates down until it abuts against the tool box 1. Then, the quick release assembly 7 is rotated up, so that the fixing screw 10 slides into the U-shaped hole 5, the connecting rod 13 is stretched, the sliding movable rod 11 increases the rotational torque of the column nut 16, and the column nut 16 is tightened to fix the upper cover 3 to the tool box 1.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A wood chipper with an easily openable top cover, comprising a blade box (1), a feed inlet (2) fixedly installed on the right side of the blade box (1), a discharge outlet (4) opened on the left side of the blade box (1), a crushing disc rotatably installed inside the blade box (1), the crushing disc shaft passing through the wall of the blade box (1) and connected to a power unit, and a top cover (3) installed on the upper part of the blade box (1), characterized in that: The upper right side of the top cover (3) is connected to the knife box (1) via a hinge. Several U-shaped holes (5) are opened on the left side of the top cover (3). The U-shaped holes (5) are connected to the left end face of the top cover (3). At the position corresponding to the U-shaped holes (5), a fixing block (6) is fixedly installed on the knife box (1). A quick-release assembly (7) is installed between the fixing block (6) and the U-shaped holes (5).

2. A wood chipper with an easily openable top cover according to claim 1, characterized in that: The quick-release assembly (7) includes a fixing screw (10), which has a through hole at the bottom and a thread at the top. The fixing block (6) has a corresponding through hole. A connecting rod (13) is slidably installed in the through hole of the fixing screw (10) and the through hole of the fixing block (6). Fastening components are connected to both ends of the connecting rod (13). The fastening components can prevent the connecting rod (13) from sliding out of the through hole of the fixing screw (10) and the through hole of the fixing block (6). A columnar nut (16) is installed on the threaded end of the fixing screw (10). A movable rod (11) is slidably installed on the part of the columnar nut (16) away from the fixing screw (10). The rotational torque of the columnar nut (16) can be adjusted by sliding the movable rod (11). After loosening the columnar nut (16) and rotating the quick-release assembly (7) downward with the connecting rod (13) as the axis, the top cover (3) can be opened.

3. A wood chipper with an easily openable top cover according to claim 2, characterized in that: A support assembly is provided on the side wall of the upper cover (3) and the tool box (1) to support the open upper cover (3). The support assembly includes a support plate (8), which is rotatably mounted on the side wall of the upper cover (3). A slot (9) is opened on the support plate (8), which is zigzag-shaped. A fixing post (14) is fixedly installed on the side wall of the tool box (1) at the position corresponding to the slot (9). The fixing post (14) is slidably installed in the slot (9).

4. A wood chipper with an easily openable top cover according to claim 2, characterized in that: The movable rod (11) is a telescopic rod. The movable rod (11) can be shortened into the through hole of the cylindrical nut (16). Anti-drop blocks (12) are provided at both ends of the movable rod (11). The anti-drop blocks (12) are detachably installed at both ends of the through hole of the cylindrical nut (16).

5. A wood chipper with an easily openable top cover according to claim 3, characterized in that: A photoelectric switch (15) is installed on the upper part of the outer wall on the left side of the knife box (1). The photoelectric switch (15) is connected to the power supply of the external power device. When the signal transmission path of the transmitting end and the receiving end of the photoelectric switch (15) is blocked, the photoelectric switch (15) will cut off the power supply of the external power device. When the quick-release assembly (7) is loosened and rotated downwards to hang down with the connecting rod (13) as support, it will block the signal transmission path of the transmitting end and the receiving end of the photoelectric switch (15).

6. A wood chipper with an easily openable top cover according to claim 2, characterized in that: The fixing screw (10) is a hinge bolt, and the cylindrical nut (16) is a hexagonal head or a cylindrical nut.

7. A wood chipper with an easily openable top cover according to claim 1, characterized in that: The handle is fixedly installed on the upper end of the cover (3).

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