A breaking structure and a municipal garden leaf processing device comprising the same

Abstract

The application belongs to the technical field of municipal garden working equipment, and particularly relates to a crushing structure and a municipal garden leaf processing device comprising the same. The crushing structure comprises a driving motor and a rotating shaft, further comprises a blade unit with a base which is clamped on the rotating shaft, an axial plate unit which is arranged on the rotating shaft and used for fixing the blade unit with the base in a ring direction, a bolt and nut assembly which is arranged on the axial plate unit and used for mounting the blade unit with the base, and a gear which is arranged on the rotating shaft and located between the blade unit with the base and the driving motor.

Description

Technical Field

[0001] This application belongs to the technical field of municipal landscaping equipment, and particularly relates to a crushing structure and a municipal landscaping leaf removal device including the structure. Background Technology

[0002] Existing common leaf-processing devices primarily function to chop relatively large leaves and branches, thereby making the subsequent bagging of fallen leaves more convenient and efficient. Accordingly, the structure of such devices mainly consists of an outer shell and a crushing mechanism.

[0003] Generally, dead leaves and branches enter from the upper part of the shell, pass through the rotating crushing structure, and finally leave from the lower part of the shell, thus achieving a basic dead leaf crushing effect.

[0004] On the other hand, compared with the single-roll crushing structure mentioned above, the advantages of the double-roll crushing structure are mainly: higher crushing strength and more thorough crushing.

[0005] For example, Chinese utility model patent with authorization announcement number CN222817588U and authorization announcement date of 2025.05.02 discloses a landscape garden dead leaf collection and crushing device, whose main structural components include: shell, feed hopper, fixed plate, L-shaped material receiving plate, guide plate, compression component, and crushing component.

[0006] The crushing device in this utility model patent has the following advantages: the drive motor drives two rotating shafts to rotate in opposite directions through two gears, and at the same time, multiple blades on the outside of the two rotating shafts crush the dead leaves.

[0007] However, in actual use, this crushing device still suffers from at least the following problems: insufficient stability and poor practicality, specifically manifested as follows: First, in its crushing components, power needs to be transmitted over a relatively long distance on one of the rotating shafts before it can be delivered to the two gears in sequence. This is relatively inefficient. The load on the rotating shaft is relatively large, and it is prone to torsion and deformation. Secondly, due to the problem mentioned in the first point above, the stability of the blade is relatively low, and it is difficult to replace the blade individually after it is deformed or broken. Utility Model Content

[0008] This application provides a crushing structure, the technical problem to be solved by which is: how to make the double-roll crushing structure have both high efficiency of power transmission and convenient operation of individual blade replacement.

[0009] In addition, this application also provides a municipal landscaping leaf disposal device including the above-mentioned broken structure.

[0010] The technical solution adopted by this application to solve the above problems is: a crushing structure, including a drive motor and a rotating shaft, further including a base-mounted blade unit engaged on the rotating shaft, an axial plate unit disposed on the rotating shaft and used for circumferentially fixing the base-mounted blade unit, a bolt and nut assembly disposed on the axial plate unit and used for mounting the base-mounted blade unit, and a gear disposed on the rotating shaft and located between the base-mounted blade unit and the drive motor.

[0011] A further preferred technical solution is that the base-mounted blade unit includes an arc-shaped base plate that engages with the rotating shaft, a countersunk hole on the arc-shaped base plate for mounting the bolt and nut assembly, and a crushing blade on the arc-shaped base plate.

[0012] A further preferred technical solution is that the axial plate unit includes a protruding plate disposed on the rotating shaft and located between two adjacent circumferential arc-shaped base plates, and a mounting hole disposed on the protruding plate for passing through the bolt and nut assembly.

[0013] A further preferred technical solution includes a limiting cylinder sleeved on the rotating shaft and located at both ends of the base-mounted blade unit, respectively, along with the gear.

[0014] A further preferred technical solution includes a fan-shaped annular protrusion disposed on the rotating shaft and used to engage and limit two axially adjacent blade units with bases.

[0015] A municipal landscaping leaf disposal device including the aforementioned crushing structure, the structure further includes a perforated housing unit for inserting and installing the rotating shaft, and an inverted U-shaped protective cover disposed on the outer surface of the perforated housing unit for covering the drive motor and gears.

[0016] A further preferred technical solution is that the perforated housing unit includes an operating side front panel with the inverted U-shaped protective cover on its outer side, a back panel, two side panels, and a top panel with a feed inlet on the operating side front panel, back panel, and two side panels.

[0017] A further preferred technical solution is that the perforated housing unit further includes a breakable structure disassembly port provided on the back plate, and a cover plate provided on the breakable structure disassembly port.

[0018] A further preferred technical solution is that the perforated housing unit further includes a transverse air vent disposed on one of the side plates and used for dropping uncrushable material between the other side plate and the crushing structure by blowing air into the perforated housing unit.

[0019] A further preferred technical solution is that the perforated housing unit further includes a feed hopper disposed on the upper surface of the top plate with feed inlet, and a perforated base plate disposed on the feed hopper and screwed to the top plate with feed inlet, which allows the perforated housing unit to be inverted and laid flat by removing the feed hopper when the base blade unit is replaced.

[0020] The beneficial effects of this application include at least the following seven points.

[0021] First, in this crushing structure, the gear is located on the rotating shaft, near the drive motor end, and the base-mounted blade unit engages with the rotating shaft, abuts against and is screwed to the axial plate unit. Therefore, this structure combines the high efficiency of power transmission with the convenience of individual blade replacement. Furthermore, the former advantage can further reduce the replacement frequency of the base-mounted blade unit, ensuring that the base-mounted blade unit is not prone to loosening or falling off due to the torsional deformation of the rotating shaft.

[0022] Secondly, the length direction of the axial plate unit corresponds to the axial direction of the rotating shaft. The former can not only install and fix the base-mounted blade unit, but also improve the rigidity of the rotating shaft itself, and ultimately indirectly improve the installation stability of the base-mounted blade unit.

[0023] Third, one end of the rotating shaft is inserted into the dead leaf processing device, and the other end is inserted into the limiting cylinder to ensure that it has relatively high rotational stability.

[0024] Fourth, the fan-shaped annular protrusion block, when used in conjunction with the axial plate unit, can further improve the installation stability of the base-mounted blade unit, that is, it fully limits the circumferential and axial movement, making the base-mounted blade unit less prone to displacement during use.

[0025] Fifth, the perforated housing unit can not only stably install the crushing structure, but also allow the latter to be disassembled and reassembled relatively easily. Furthermore, the lateral blowing effect through the openings can eliminate the need to crush relatively small dead leaf materials, thereby improving the efficiency of the crushing operation and extending the effective service life of the crushing structure.

[0026] Sixth, the drive motor and gears located on the outside of the perforated housing unit are fully covered by the inverted U-shaped protective cover, ensuring the safety of the processing device.

[0027] Seventh, the perforated housing unit also has a detachable feed hopper. Therefore, when the base-mounted blade unit is replaced, the perforated housing unit can be inverted and laid flat, with its lower opening fully exposed, further improving the convenience of individual blade replacement. Attached Figure Description

[0028] Figure 1 This is a schematic diagram showing the position of the gear in this application.

[0029] Figure 2 This is a schematic diagram showing the location of the blade unit with a base in this application.

[0030] Figure 3 This is a schematic diagram of the blade unit with a base in this application.

[0031] Figure 4 This is a schematic diagram showing the position and shape of the limiting cylinder and the fan-shaped protrusion in this application.

[0032] Figure 5 This is a schematic diagram of the dead leaf treatment device in this application.

[0033] Figure 6 This is a schematic diagram showing the location and structure of the perforated housing unit in this application.

[0034] Figure 7 This is a schematic diagram showing the position and shape of the cover plate in this application.

[0035] Figure 8 This is a schematic diagram showing the location and shape of the perforated base plate in this application.

[0036] Figure 9 This is a schematic diagram of the perforated housing unit being placed upside down when replacing the base-mounted blade unit in this application.

[0037] Figure 10 This is a schematic diagram showing the position and shape of the stiffening strip on the inner side of the front panel in this application.

[0038] The meanings of the markings in the diagram are as follows.

[0039] a) Uncrushable material; b) Crushed material; c) Blower direction; d) Operating platform; Drive motor 11, rotating shaft 12; 1. Blade unit with base; 2. Axial plate unit; 3. Bolt and nut assembly; 4. Gear; 5. Limiting cylinder; 6. Fan-shaped annular protrusion. Arc-shaped base plate 101, countersunk hole 102, crushing blade 103; Protruding plate 201, mounting hole 202; 7. Perforated outer casing unit; 8. Inverted U-shaped protective cover; Operating side front panel 701, back plate 702, side plate 703, top plate with feed inlet 704, crushing structure disassembly port 705, cover plate 706, transverse blower opening 707, feed hopper 708, bottom plate with perforation 709, inner stiffening strip of front panel 710, mounting plate 711. Detailed Implementation

[0040] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0041] like Figures 1-10 As shown, a crushing structure includes a drive motor 11 and a rotating shaft 12, and further includes a base-mounted blade unit 1 engaged on the rotating shaft 12, an axial plate unit 2 disposed on the rotating shaft 12 and used for circumferentially fixing the base-mounted blade unit 1, a bolt and nut assembly 3 disposed on the axial plate unit 2 and used for mounting the base-mounted blade unit 1, and a gear 4 disposed on the rotating shaft 12 and located between the base-mounted blade unit 1 and the drive motor 11.

[0042] In this embodiment, the specific components of the crushing structure include: one drive motor 11, two rotating shafts 12, two sets of blade units with bases 1, four axial plate units 2, several bolt and nut assemblies 3, and two gears 4.

[0043] In this configuration, one drive motor 11 and two gears 4 are located on the same side of the rotating shaft 12. The rotating shaft 12 directly connected to the drive motor 11 is the driving shaft, and the other is the driven shaft. In this configuration, the driving shaft does not need to use its entire shaft as a power transmission component; it mainly bears the load of the crushing operation. Therefore, the driving shaft has the direct advantage of being less prone to torsional deformation. An indirect advantage is that the base-mounted blade unit 1 has basic and relatively high installation stability on the rotating shaft 12, reducing the replacement frequency of the base-mounted blade unit 1.

[0044] On the other hand, when the base-mounted blade unit 1 is correctly installed, it engages with the rotating shaft 12, circumferentially abuts against the axial plate unit 2, and is screwed to the axial plate unit 2. Therefore, each base-mounted blade unit 1 can be replaced individually, and it combines installation stability with ease of assembly and disassembly.

[0045] Generally, the base-mounted blade unit 1 in this crushing structure can be replaced without repair, further improving the efficiency of the crushing function.

[0046] Specifically, in this crushing structure, the drive motor 11 is connected to one of the rotating shafts 12 via a coupling, making it the drive shaft. The rotating shaft 12 and the axial plate unit 2 are integrally formed, the latter improving the rigidity of the overall structure. The bolt and nut assembly 3 is a commercially available product, which can further improve the installation stability of the base-mounted blade unit 1 by using two nuts stacked together.

[0047] Finally, there are two gears 4, which mesh with each other and are respectively mounted on two rotating shafts 12, serving as the power transmission structure between the driving shaft and the driven shaft. The two gears 4 and the drive motor 11 are exposed on the leaf handling device, which facilitates their operation and maintenance.

[0048] The base-mounted blade unit 1 includes an arc-shaped base plate 101 that engages with the rotating shaft 12, a countersunk hole 102 on the arc-shaped base plate 101 for mounting the bolt and nut assembly 3, and a crushing blade 103 on the arc-shaped base plate 101.

[0049] In this embodiment, the main material of the crushing structure is high-strength steel, and each of the base-mounted blade units 1 is integrally formed. The arc-shaped base plate 101 has a fan-shaped vertical cross-section, with its upper and lower ends respectively abutting against two of the axial plate units 2.

[0050] On the other hand, the bolts in the bolt and nut assembly 3 pass sequentially through the first arc-shaped base plate 101, the axial plate unit 2, and the second arc-shaped base plate 101, thereby ensuring that the two bolt and nut assemblies 3 fully fix the two pairs of base-mounted blade units 1. For details, please refer to the appendix. Figure 2 .

[0051] Correspondingly, at this time, a single rotating shaft 12 is provided with two rows of crushing blades 103, with each row having 8-20 crushing blades 103.

[0052] The axial plate unit 2 includes a protruding plate 201 disposed on the rotating shaft 12 and located between two adjacent circumferential arc-shaped base plates 101, and a mounting hole 202 disposed on the protruding plate 201 for passing through the bolt and nut assembly 3.

[0053] In this embodiment, the term "axial" in the axial plate unit 2 refers to the fact that its length direction is parallel to the axial direction of the rotation shaft 12.

[0054] The protruding plate 201 is generally rectangular in shape, and the position and number of the mounting holes 202 correspond to the paired base-mounted blade units 1. Whether or not threads are provided on them is optional.

[0055] The crushing structure also includes a limiting cylinder 5, which is sleeved on the rotating shaft 12 and located at both ends of the base-mounted blade unit 1, along with the gear 4.

[0056] In this embodiment, the length of the protruding plate 201 is less than that of the rotating shaft 12, and both ends of the former are recessed at their corresponding positions on the latter.

[0057] Correspondingly, as shown in the appendix Figure 4 As shown, one recessed area is used to install the limiting cylinder 5, thereby improving the rotational stability of the rotating shaft 12. The other recessed area is used to install the gear 4, ensuring the effectiveness of the aforementioned power transmission function.

[0058] The limiting cylinder 5 is fixedly connected to the inner side of the dead leaf treatment device.

[0059] The crushing structure also includes a fan-shaped annular protrusion 6 disposed on the rotating shaft 12 and used to engage and limit the two axially adjacent base-mounted blade units 1.

[0060] In this embodiment, the fan-shaped annular protrusion 6 is integrally formed with the rotating shaft 12. The main function of the former is to axially limit and fix the base-mounted blade unit 1, thereby further improving the installation stability of the base-mounted blade unit 1.

[0061] For example, if there are 8 crushing blades 103 in each row, there are 9 fan-shaped protrusions 6, thus ensuring that each base-mounted blade unit 1 has a fan-shaped protrusion 6 on both sides, and that the opposite sides of the arc-shaped base plate 101 and the fan-shaped protrusions 6 are fully and appropriately fitted and abutted.

[0062] A municipal landscaping leaf disposal device including the above-mentioned broken structure, the structure further includes a perforated housing unit 7 for inserting and installing the rotating shaft 12, and an inverted U-shaped protective cover 8 disposed on the outer surface of the perforated housing unit 7 and used to cover the drive motor 11 and gear 4.

[0063] In this embodiment, the main body material of the perforated outer shell unit 7 and the inverted U-shaped protective cover 8 is galvanized steel, which can provide sufficient structural strength and a certain degree of rust prevention.

[0064] The perforated outer shell unit 7 is rectangular in shape and consists of five plates: front, back, left, right, and top. The dead leaf material enters from the top and exits from the bottom. After passing through the crushing structure, the basic function of crushing dead leaves can be achieved.

[0065] On the other hand, the inverted U-shaped protective cover 8 has a structure consisting of one top plate and two side plates, or one top plate and three side plates, the former as shown in the attached figure. Figure 10 As shown in the appendix Figure 6 As shown. The former has the advantage that the operation and maintenance of the drive motor 11 and gear 4 are relatively convenient, while the latter has the advantage of more comprehensive protection. The common feature of these two methods is that they are both bottom-opening designs, and at least the bottom opening allows for the operation and maintenance of the drive motor 11 and gear 4.

[0066] The perforated housing unit 7 includes an operating side front panel 701 with the inverted U-shaped protective cover 8 on its outer side, a back panel 702, two side panels 703, and a top plate 704 with a feed inlet disposed on the operating side front panel 701, the back panel 702 and the two side panels 703.

[0067] In this embodiment, the inverted U-shaped protective cover 8 and the operating side front panel 701 are welded or screwed together. The operating side front panel 701 has two shaft holes located inside the inverted U-shaped protective cover 8 for mounting the two rotating shafts 12 respectively.

[0068] The limiting cylinder 5 is installed on the inner side of the back plate 702, and the top plate 704 with the feed inlet is provided with a rectangular feed inlet.

[0069] In addition, the inner side of the operating side front panel 701 is provided with vertical and / or horizontal inner stiffening strips 710, thereby preventing the weight of the broken structure from deforming or cracking the operating side front panel 701.

[0070] The mounting plate 711 is provided on the outer side of both side plates 703, which is used to fix the entire perforated housing unit 7 at a relatively high position, so as to ensure that the crushed material discharged below can be effectively and completely received, for example, by bagging.

[0071] The perforated housing unit 7 also includes a breakable structure disassembly port 705 disposed on the back plate 702, and a cover plate 706 disposed on the breakable structure disassembly port 705.

[0072] In this embodiment, the shape of the crushing structure disassembly port 705 is rectangular, and its length and width are relatively large, ensuring that the two rotating shafts 12 and all the base-mounted blade units 1 on them can be disassembled and installed in one step at the crushing structure disassembly port 705.

[0073] The cover plate 706 is screwed to the back plate 702. The inner side of the cover plate is provided with the limiting cylinder 5, or it can be similar to the operating side front panel 701, with a shaft hole for inserting the rotating shaft 12.

[0074] The method for removing the crushing structure from the crushing structure disassembly port 705 includes the following steps: First, remove the drive motor 11 and the two gears 4; Second, if the perforated outer casing unit 7 is inverted at this time, the rotating shaft 12 is appropriately suspended; if it is not inverted, the rotating shaft 12 is appropriately supported. Third, remove the cover plate 706 to expose the two rotating shafts 12; Fourth, first, fully fix the broken structure at the disassembly port 705, then release the suspension and support functions, and finally move the broken structure out laterally to complete the entire disassembly operation.

[0075] When the crushing structure is installed at the crushing structure disassembly port 705, the method is similar to that described above.

[0076] The perforated housing unit 7 also includes a transverse air vent 707 disposed on one of the side plates 703 and used for dropping uncrushable material a between the other side plate 703 and the crushing structure by blowing air into the perforated housing unit 7.

[0077] In this embodiment, as shown in the appendix Figure 5 As shown, the installation position of the crushing structure within the perforated housing unit 7 is not centered, but located on one side near the transverse blower opening 707.

[0078] Correspondingly, the transverse blower with opening 707 works in conjunction with a blower. Its main function is to allow the blower airflow to laterally sweep relatively small dead leaves and branches into the perforated housing unit 7, onto the side opposite to where the crushing structure is located, and then allow them to fall directly down. This eliminates the need for crushing these small dead leaves and branches, as this material itself is already easy to compact and bag. Therefore, this can extend the effective service life of the crushing structure and the replacement cycle of the base-mounted blade unit 1.

[0079] For details, see attached. Figure 5 As shown, the un-crushable material a and the crushed material b have similar material dimensions. However, it should be noted that the opening and use of the transverse blower opening 707 also has disadvantages. Whether or not to use the transverse blower operation can be selected as needed. The disadvantages include: the blower needs to be purchased and consumes energy; the un-crushable material a and the crushed material b fall separately, so the receiving operation is more troublesome and requires two bags or larger bags; the blower airflow continues downward, which may scatter and stir up the crushed material that has already been collected.

[0080] The perforated housing unit 7 further includes a feed hopper 708 disposed on the upper surface of the top plate 704 with feed inlet, and a perforated base plate 709 disposed on the feed hopper 708 and screwed to the top plate 704 with feed inlet, which allows the perforated housing unit 7 to be inverted and laid flat by removing the feed hopper 708 when the base blade unit 1 is replaced.

[0081] In this embodiment, the feed hopper 708 is wider at the top and narrower at the bottom. It is screwed to the top plate 704 with the feed inlet via the perforated bottom plate 709, thereby directly making the feed hopper 708 detachable and indirectly allowing the perforated outer casing unit 7 to be inverted. This facilitates the replacement of the damaged base-mounted blade unit 1. For details, please refer to the appendix. Figure 9 .

[0082] Finally, the phrase "for municipal landscaping" indicates that it can be used, not only used, in municipal landscaping, including municipal roads, parks, and other similar locations. Of course, the aforementioned leaf removal device can also be used in places such as private gardens.

[0083] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A crushing structure, comprising a drive motor (11) and a rotating shaft (12), characterized in that: It also includes a base-mounted blade unit (1) engaged on the rotating shaft (12), an axial plate unit (2) mounted on the rotating shaft (12) and used for circumferentially fixing the base-mounted blade unit (1), a bolt and nut assembly (3) mounted on the axial plate unit (2) and used for mounting the base-mounted blade unit (1), and a gear (4) mounted on the rotating shaft (12) and located between the base-mounted blade unit (1) and the drive motor (11).

2. The crushing structure according to claim 1, characterized in that: The base-mounted blade unit (1) includes an arc-shaped base plate (101) engaged with the rotating shaft (12), a countersunk hole (102) on the arc-shaped base plate (101) for mounting the bolt and nut assembly (3), and a crushing blade (103) on the arc-shaped base plate (101).

3. The crushing structure according to claim 2, characterized in that: The axial plate unit (2) includes a protruding plate (201) disposed on the rotating shaft (12) and located between two adjacent circumferential arc-shaped base plates (101), and a mounting hole (202) disposed on the protruding plate (201) for passing through the bolt and nut assembly (3).

4. The crushing structure according to claim 1, characterized in that: It also includes a limiting cylinder (5) that is sleeved on the rotating shaft (12) and located at both ends of the base-mounted blade unit (1) along with the gear (4).

5. The crushing structure according to claim 1, characterized in that: It also includes a fan-shaped protrusion (6) disposed on the rotating shaft (12) and used to engage and limit the two axially adjacent blade units (1) with bases.

6. A municipal landscaping leaf disposal device comprising the crushing structure as described in any one of claims 1-5, characterized in that: The structure also includes a perforated housing unit (7) for inserting and mounting the rotating shaft (12), and an inverted U-shaped protective cover (8) disposed on the outer side of the perforated housing unit (7) and used to cover the drive motor (11) and gear (4).

7. A municipal landscaping leaf disposal device including the aforementioned crushing structure according to claim 6, characterized in that: The perforated housing unit (7) includes an operating side front panel (701) with the inverted U-shaped protective cover (8) on its outer side, a back panel (702), two side panels (703), and a top plate (704) with a feed inlet on the operating side front panel (701), back panel (702) and two side panels (703).

8. A municipal landscaping leaf disposal device including the aforementioned crushing structure according to claim 7, characterized in that: The perforated housing unit (7) further includes a breakable structure disassembly port (705) provided on the back plate (702) and a cover plate (706) provided on the breakable structure disassembly port (705).

9. A municipal landscaping leaf disposal device including the aforementioned crushing structure according to claim 7, characterized in that: The perforated housing unit (7) also includes a transverse air vent (707) disposed on one of the side plates (703) and used for dropping uncrushable material (a) between the other side plate (703) and the crushing structure by blowing air into the perforated housing unit (7).

10. A municipal landscaping leaf disposal device including the aforementioned crushing structure according to claim 7, characterized in that: The perforated housing unit (7) further includes a feed hopper (708) disposed on the upper surface of the top plate (704) with feed inlet, and a perforated base plate (709) disposed on the feed hopper (708) and screwed to the top plate (704) with feed inlet, which allows the perforated housing unit (7) to be inverted and laid flat when the base blade unit (1) is replaced by removing the feed hopper (708).

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