Hedge trimming device and greening comprehensive maintenance vehicle

Abstract

The utility model discloses a hedgerow trimming device and greening comprehensive maintenance truck, the hedgerow trimming device comprises a housing, a first crushing module and a second crushing module, the housing comprises a cutterhead cavity part and an air duct butt joint part which are sequentially arranged along the feeding direction, and the cutterhead cavity part is gradually shrunk along the feeding direction; the end, away from the cutter head cavity part, of the air duct butt joint part is used for being communicated with an air draft air duct, the first crushing module is rotatably arranged in the cutter head cavity part, the second crushing module is rotatably arranged in the air duct butt joint part, and when hedge trimming operation is executed, an operator aligns the cutter head cavity part of the housing to the cutting position of a hedge, so that the hedge trimming operation is completed. The first crushing module is used for primarily crushing hedges, branches obtained after primary crushing enter the air flue butt joint part along the gradually-shrunk cutter head cavity part, in the air flue butt joint part, the branches can enter the air draft air flue after being cut and crushed again through the second crushing module, and it is ensured that only small chippings exist in the air draft air flue; and the condition of air duct congestion can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of landscaping, and particularly relates to a hedge trimming device and a comprehensive greening maintenance vehicle. Background Art

[0002] A hedge trimming device is an automated trimming device applicable to landscaping aspects such as tea trimming, parks, gardens, roadside hedges, etc. It includes a housing, cutting tools, and a ventilation device. The cutting tools are arranged inside the housing for trimming the hedge, and the ventilation device is arranged at the rear side of the housing to extract the crushed materials from the housing through a centrifugal fan. This trimming method does not crush the hedge thoroughly enough, and the uncrushed long hedge branches are likely to cause congestion in the rear air duct. Content of the Utility Model

[0003] In view of the above defects or deficiencies, the utility model provides a hedge trimming device and a comprehensive greening maintenance vehicle, aiming to solve the technical problem that the existing trimming method is difficult to thoroughly crush the hedge and is likely to cause congestion at the rear end of the equipment.

[0004] To achieve the above object, the utility model provides a hedge trimming device. The hedge trimming device includes a housing, a first crushing module, and a second crushing module. The housing includes a cutter head cavity part and an air duct docking part arranged in sequence along the feeding direction, and the cutter head cavity part is tapered along the feeding direction. One end of the air duct docking part far from the cutter head cavity part is used for communicating with an air extraction duct. The first crushing module is rotatably placed inside the cutter head cavity part, and the second crushing module is rotatably placed inside the air duct docking part.

[0005] In an embodiment of the utility model, a trimming opening is formed on one side of the cutter head cavity part facing the hedge trimming surface. The first crushing module includes a crushing cutter head rotatably arranged on the cutter head cavity part and opposite to the trimming opening. The second crushing module includes a crushing cutter roller spanning the inner cavity of the air duct docking part and rotatably arranged on the air duct docking part.

[0006] In an embodiment of the utility model, the first crushing module is divided into a front crushing module and a rear crushing module. The front crushing module and the rear crushing module are arranged in sequence along the feeding direction, and the rear crushing module is arranged between two adjacent front crushing modules. The crushing cutter heads of two adjacent front crushing modules rotate towards the rear crushing module on the inner side.

[0007] In an embodiment of the utility model, the air duct docking part is arranged on the discharging side of the rear crushing module.

[0008] In the embodiment of the present utility model, the crushing cutter head includes a cutter head rotating shaft, a mounting disc body, and blades. The blades are divided into first blades and second blades. The cutter head rotating shaft is rotatably arranged on the cutter head cavity part. The mounting disc body is arranged on the cutter head rotating shaft and is oppositely arranged with the trimming opening. The first blades and the second blades are arranged in layers along the length direction of the cutter head rotating shaft on the mounting disc body, and the first blades and the second blades are staggeredly arranged.

[0009] In the embodiment of the present utility model, the crushing cutter head further includes a connecting shaft assembly. The connecting shaft assembly includes a first shaft sleeve and a second shaft sleeve. The second shaft sleeve is penetrated through the mounting disc body. One end of the first shaft sleeve passes through the blade and is embedded in the second shaft sleeve, and the other end of the first shaft sleeve presses the blade on the second shaft sleeve.

[0010] In the embodiment of the present utility model, the hedge trimming device further includes a connecting frame for connecting the vehicle body, and the housing is connected to the connecting frame in an adjustable pitching angle manner.

[0011] In the embodiment of the present utility model, a first hinge seat and a second hinge seat are arranged at intervals in the front and rear on the top plate of the housing. The connecting frame includes a frame body and an inclination angle adjusting assembly. The frame body is formed with hinge holes and adjusting holes arranged at intervals in the front and rear. The hinge holes are used for the corresponding hinge connection between the frame body and the first hinge seat. The adjusting holes extend along the length direction of the housing. The adjusting assembly includes an adjusting rod and two positioning members arranged on the adjusting rod. One end of the adjusting rod is hinged to the second hinge seat, the other end of the adjusting rod passes through the adjusting hole, and the two positioning members are arranged at intervals of the adjusting hole and are adjustable in position along the adjusting rod;

[0012] And / or, a connecting component is arranged on the connecting frame. One end of the connecting component is used for connecting the vehicle body, and the other end of the connecting component is formed with a horizontally penetrating sliding channel. A cross beam is arranged on the connecting frame and penetrates through the sliding channel.

[0013] In the embodiment of the present utility model, the hedge trimming device further includes a fixed blade arranged at the inlet of the air duct docking part;

[0014] And / or, both the first crushing module and the second crushing module include a plunger motor set as a driving member.

[0015] In order to achieve the above object, the present utility model further provides a greening comprehensive maintenance vehicle. Among them, the greening comprehensive maintenance vehicle includes a vehicle body and the above-mentioned hedge trimming device, and the hedge trimming device is arranged on the vehicle body.

[0016] Through the above technical solutions, the hedge trimming device and the greening comprehensive maintenance vehicle provided by the embodiments of the present utility model have the following beneficial effects:

[0017] When using the above-mentioned hedge trimming device, including a housing, a first crushing module and a second crushing module, when performing hedge trimming operations, the operator aligns the cutter head cavity part of the housing with the cutting position of the hedge. The first crushing module cuts and crushes the hedge, and the preliminarily crushed branches enter the air duct docking part along the tapered cutter head cavity part. Inside the air duct docking part, the branches are cut and crushed again by the second crushing module before entering the air extraction duct, ensuring that only smaller debris exists in the air extraction duct, which can avoid the situation of air duct congestion.

[0018] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide an understanding of the present utility model and form a part of the specification, and are used together with the following specific implementation to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic diagram of the lower side structure of the hedge trimming device according to an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the upper side structure of the hedge trimming device according to an embodiment of the present utility model;

[0022] Figure 3 is a bottom view of the hedge trimming device according to an embodiment of the present utility model;

[0023] Figure 4 is a top view of the hedge trimming device according to an embodiment of the present utility model;

[0024] Figure 5 is a side view of the hedge trimming device according to an embodiment of the present utility model;

[0025] Figure 6 is a cross-sectional view of the first crushing module according to an embodiment of the present utility model;

[0026] Figure 7 is Figure 6 a partial enlarged view of part A in

[0027] Figure 8 is a schematic diagram of the second crushing module according to an embodiment of the present utility model;

[0028] Figure 9 is a side view of the second crushing module according to an embodiment of the present utility model;

[0029] Figure 10 is a schematic diagram of the position of the first crushing module and the air duct docking part according to an embodiment of the present utility model.

[0030] Description of the Reference Numerals

[0031] 1 Housing 11 Cutter Head Cavity Part

[0032] 111 Trimming Opening 12 Air Duct Docking Part

[0033] 13 First Hinge Seat 14 Second Hinge Seat

[0034] 2 First Crushing Module 21 Crushing Cutter Head

[0035] 211 Cutter Head Rotating Shaft 212 Mounting Disc Body

[0036] 213 First Blade 214 Second Blade

[0037] 215 Connecting Shaft Assembly 2151 Blade Bolt

[0038] 2152 Blade Nut 2153 First Bush

[0039] 2154 Second Bush 216 Third Blade

[0040] 22 First Driving Part 201 Front Crushing Module

[0041] 202 Rear Crushing Module 3 Second Crushing Module

[0042] 31 Crushing Cutter Roller 32 Second Driving Part

[0043] 33 Moving Blade 34 Fixed Blade

[0044] 4 Connecting Frame 41 Frame Body

[0045] 411 Cross Beam 412 Limiting Hole

[0046] 413 Adjusting Hole 42 Inclination Adjusting Assembly

[0047] 421 Adjusting Rod 422 Positioning Part

[0048] 43 Connecting Assembly 431 Clamping Bolt

[0049] 432 Bracket Welding 433 Clamping Plate

[0050] 5 Curtain 6 Exhaust Air Duct Detailed Implementation Modes

[0051] The following is a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0052] The hedge trimming device and the greening comprehensive maintenance vehicle of the present utility model will be described below with reference to the accompanying drawings.

[0053] As Figure 1 and Figure 2 shown, the present utility model provides a hedge trimming device, wherein the hedge trimming device includes:

[0054] A housing 1, including a cutter head cavity portion 11 and an air duct docking portion 12 arranged in sequence along the feeding direction, and the cutter head cavity portion 11 is tapered along the feeding direction, and one end of the air duct docking portion 12 away from the cutter head cavity portion 11 is used to communicate with the exhaust air duct 6;

[0055] A first crushing module 2, rotatably placed in the cutter head cavity portion 11;

[0056] A second crushing module 3, rotatably placed in the air duct docking portion 12.

[0057] When using the above-mentioned hedge trimming device, including the housing 1, the first crushing module 2 and the second crushing module 3, to perform hedge trimming operations, the operator aligns the cutter head cavity portion 11 of the housing 1 with the cutting position of the hedge, and the first crushing module 2 cuts and crushes the hedge. The preliminarily crushed branches enter the air duct docking portion 12 along the tapered cutter head cavity portion 11. In the air duct docking portion 12, the branches are cut and crushed again by the second crushing module 3 before entering the exhaust air duct 6, ensuring that only smaller debris exists in the exhaust air duct 6, which can avoid the situation of air duct congestion and facilitate subsequent compression and transportation of the debris.

[0058] Specifically, the air duct docking portion 12 is detachably connected to the rear side of the cutter head cavity portion 11 by bolts, so as to facilitate the maintenance and replacement of the second crushing module 3.

[0059] As Figure 1 shown, in the embodiment of the present utility model, a trimming opening 111 is formed on one side of the cutter head cavity portion 11 facing the hedge trimming surface. The first crushing module 2 includes a crushing cutter head 21 rotatably arranged on the cutter head cavity portion 11 and opposite to the trimming opening 111. The second crushing module 3 includes a crushing cutter roller 31 spanning the inner cavity of the air duct docking portion 12 and rotatably arranged on the air duct docking portion 12. The crushing cutter head 21 cooperates with the crushing cutter roller 31. The crushing cutter head 21 cuts the branches in the horizontal direction or at a certain angle with the horizontal direction (the angle is generally set to 6-8°), and the crushing cutter roller 31 cuts the branches in the height direction. The cutting directions of the two are perpendicular to each other, ensuring that the branches can be thoroughly crushed.

[0060] Specifically, the trimming opening 111 is provided on the bottom plate of the cutter head cavity part 11, and a baffle curtain 5 is arranged at the front end of the cutter head cavity part 11. When performing a cutting operation, the operator horizontally aligns the trimming opening 111 with the trimming position of the hedge, and then horizontally pushes the hedge trimming device, so that the crushing cutter head 21 is in lateral contact with the hedge, and the hedge is trimmed to a set height at one time. The cut long branches move along the feeding direction under the action of the centrifugal force of the crushing cutter head 21 and the driving of the blower arranged at the rear end of the hedge trimming device. During the moving process, there are two situations for the branches: in one situation, the branches move along the feeding direction in an upright state. During this process, the crushing cutter head 21 will repeatedly cut the branches and cut them into debris; in the other situation, the branches are placed horizontally and pass through the gap between the crushing cutter head 21 and the top plate or the bottom plate of the cutter head cavity part 11. Then, the unbroken branches are cut again by the crushing cutter roller 31. Different from the crushing cutter head 21, the gap between the crushing cutter roller 31 and the wall surface of the air duct docking part 12 can be set to be smaller, and only the debris smaller than this gap can enter the extraction air duct 6 through the air duct docking part 12. Through the front and rear cooperation of the crushing cutter head 21 and the crushing cutter roller 31, while ensuring the cutting efficiency, the situation of incomplete crushing of the branches is also avoided.

[0061] Further, the first crushing module 2 includes a first driving member 22 and a crushing cutter head 21. The first driving member 22 is arranged on the top plate of the cutter head cavity part 11 and is drivingly connected to the crushing cutter head 21; the second crushing module 3 includes a second driving member 32 and a crushing cutter roller 31. The second driving member 32 is arranged on the side plate of the air duct docking part 12 and is drivingly connected to the crushing cutter roller 31. Even further, a third crushing module is also arranged between the first crushing module 2 and the second crushing module 3. Refer to Figure 8 and Figure 9 , a fixed blade 34 is arranged at the inlet of the air duct docking part 12. The fixed blade 34 extends along the width direction of the air duct docking part 12. Two opposite moving blades 33 are arranged on the crushing cutter roller 31. When any moving blade 33 runs to the position point closest to the fixed blade 34, the gap between it and the fixed blade 34 does not exceed 2 mm. Of course, the present invention is not limited to this. The second crushing module 3 can also select other crushing structures. For example, a rolling structure can be used to roll the branches, or shearing can be performed through multiple staggered blades.

[0062] Such as Figure 3As shown in the figure, in the embodiment of the present utility model, the first crushing module 2 is divided into a front crushing module 201 and a rear crushing module 202. The front crushing module 201 and the rear crushing module 202 are arranged in sequence along the feeding direction, and the rear crushing module 202 is arranged between two adjacent front crushing modules 201. The crushing cutter discs 21 of two adjacent front crushing modules 201 rotate inwardly towards the rear crushing module 202. During the process of pushing the hedge trimming device in parallel, the front crushing module 201 first contacts the hedge and cuts off the branches. The cut branches are quickly thrown towards the rear crushing module 202 under the centrifugal force of the two front crushing modules 201, and the rear crushing module 202 cuts the branches. Through the inverted triangle design, the cutting efficiency of the hedge is improved. Specifically, the front crushing module 201 and the rear crushing module 202 form a rotational overlapping area to prevent the phenomenon of missed cutting.

[0063] As Figure 3 shown, in the embodiment of the present utility model, the air duct docking part 12 is arranged to be biased towards the discharge side of the rear crushing module 202, so as to utilize the centrifugal force generated by the rear crushing module 202 to make the branches quickly enter the air duct docking part 12. Specifically, the discharge side of the rear crushing module 202 is determined according to its rotation direction. Refer to Figure 10 , if the right side of the rear crushing module 202 is the discharge side, then the air duct docking part 12 is arranged to be biased to the right, and vice versa, it is arranged to be biased to the left.

[0064] As Figure 6 shown, in the embodiment of the present utility model, the crushing cutter disc 21 includes a cutter disc rotating shaft 211, a mounting disc body 212 and blades. The blades are divided into a first blade 213 and a second blade 214. The cutter disc rotating shaft 211 is rotatably arranged on the cutter disc cavity part 11. The mounting disc body 212 is arranged on the cutter disc rotating shaft 211 and is oppositely arranged with the trimming opening 111. The first blade 213 and the second blade 214 are arranged in layers along the length direction of the cutter disc rotating shaft 211 on the mounting disc body 212, and the first blade 213 and the second blade 214 are arranged staggeredly. By arranging the layered first blade 213 and second blade 214, the crushing cutter disc 21 can cut the branches into two sections in one rotation, so as to improve the cutting efficiency; since the first blade 213 and the second blade 214 are arranged staggeredly, when the crushing cutter disc 21 rotates one circle, the branches are cut twice, and the two cuts are spaced in time, so as to reduce the impact received by the crushing cutter disc 21 during a single cut and extend the service life of the first crushing module 2. It should be noted that the first blade 213 and the second blade 214 are only used to illustrate the structure in which they are arranged in layers along the length direction of the cutter disc rotating shaft 211, and do not limit the actual number of blades. The first blade 213 and the second blade 214 can both be set to two or other numbers.

[0065] Specifically, the crushing cutter disc 21 of the front crushing module 201 includes a first blade 213 and a second blade 214. The crushing cutter disc 21 of the rear crushing module 202 is further provided with a third blade 216 between the first blade 213 and the second blade 214 to further improve the cutting effect. Of course, the number of the third blades 216 can also be two or more, and other layers of blades can also be arranged along the length direction of the cutter disc rotating shaft 211.

[0066] As Figure 6 and Figure 7 shown, in the embodiment of the present utility model, the blade is rotatably arranged on the mounting disc body 212 through the connecting shaft assembly 215. During the cutting process, if the branch is thinner or softer, the resistance received by the blade cutting is smaller, and the crushing cutter disc 21 can complete the cutting of the branch by rotating one circle; if the branch is thicker or harder, the resistance received by the blade cutting is larger, then the blade rotates inward to the inside of the crushing cutter disc 21 after partially cutting the branch, and the blade resets under the action of centrifugal force after passing through the branch, and performs secondary cutting on the same position of the branch when the crushing cutter disc 21 rotates for the second time. As the crushing cutter disc 21 rotates, the blade repeats the above process until the branch is cut off. Through this rotatable blade connection structure, when cutting hedges such as hard shrubs, the single cutting of the branch can be decomposed into multiple cuttings, and the impact received by the blade each time it contacts the branch is smaller, which is beneficial to extending the service life of the blade and the entire first crushing module 2.

[0067] Specifically, referring to Figure 7 , taking the connecting shaft assembly 215 of the second blade 214 as an example, the connecting shaft assembly 215 includes a blade bolt 2151, a blade nut 2152, a first shaft sleeve 2153 and a second shaft sleeve 2154. A connecting hole is opened on the outer edge of the mounting disc body 212. The upper end of the second shaft sleeve 2154 is embedded in the connecting hole. The first shaft sleeve 2153 passes through the second blade 214 and is embedded in the concave hole of the first shaft sleeve 2153. The second blade 214 is rotatably arranged around the first shaft sleeve 2153. The blade bolt 2151 passes through the first shaft sleeve 2153 and the second shaft sleeve 2154, and the first shaft sleeve 2153 and the second shaft sleeve 2154 are fixed by the blade nut 2152. And by screwing the blade nut 2152, the pressure of the first shaft sleeve 2153 and the second shaft sleeve 2154 on the second blade 214 can also be adjusted, so as to adjust the maximum static friction force received by the second blade 214. Different maximum static friction forces can be correspondingly set according to the resistance received by the second blade 214 during cutting to ensure the cutting effect. In addition, the second shaft sleeve 2154 can also be integrally arranged with the mounting disc body 212 and directly connected to the first shaft sleeve 2153 through a threaded structure.

[0068] Further, the second blade 214 is connected to the lower end surface of the mounting disk body 212 through a connecting shaft assembly 215, and the second blade 214 can rotate 360° around the connecting shaft assembly 215. Further still, both the second blade 214 and the third blade 216 are provided with bending structures to avoid the blade bolts 2151 during the rotation process.

[0069] As Figure 4 and Figure 5 shown, in the embodiment of the present utility model, the hedge trimming device further includes a connecting frame 4 for connecting to the vehicle body, and the housing 1 is connected to the connecting frame 4 in a pitch angle adjustable manner. By adjusting the pitch angle of the housing 1, it can be ensured that the crushing cutter head 21 is perpendicular to the branches of the hedge. During the cutting process, the cross-sectional area of the cut branches is the smallest, and the impact load on the first crushing module 2 is also smaller.

[0070] In the embodiment of the present utility model, a first hinge seat 13 and a second hinge seat 14 are arranged at intervals in the front-rear direction on the top plate of the housing 1. The connecting frame 4 includes a frame body 41 and an inclination angle adjusting component 42. The frame body 41 is formed with hinge holes and adjusting holes 413 arranged at intervals in the front-rear direction. The hinge holes are used for the corresponding hinge connection between the frame body 41 and the first hinge seat 13. The adjusting holes 413 extend along the length direction of the housing 1. The adjusting component includes an adjusting rod 421 and two positioning members 422 arranged on the adjusting rod 421. One end of the adjusting rod 421 is hinged to the second hinge seat 14, and the other end of the adjusting rod 421 passes through the adjusting hole 413. The two positioning members 422 are arranged at intervals from the adjusting hole 413 and are adjustable in position along the adjusting rod 421. By changing the height of the two positioning members 422 on the adjusting rod 421, the pitch angle of the housing 1 can be changed. Specifically, the adjusting rod 421 is set as a threaded rod, and the positioning member 422 is set as a bolt sleeved on the threaded rod. Further, the number of both the first hinge seat 13 and the second hinge seat 14 is set to two, and they are symmetrically arranged along the midline of the housing 1. The connecting frame 4 is also arranged in a symmetrical manner. Of course, the present utility model is not limited thereto. The positioning member 422 can also be set as a pin inserted through the adjusting rod 421; the inclination angle adjusting component 42 can also be set as a telescopic rod respectively hinged to the frame body 41 and the second hinge seat 14.

[0071] In the embodiment of the present utility model, the connecting frame 4 includes a frame body 41 and a connecting component 43. One end of the connecting component 43 is used to connect to the vehicle body, and the other end of the connecting component 43 is formed with a horizontally penetrating sliding channel. A cross beam 411 is arranged on the frame body 41 and penetrates through the sliding channel. By horizontally moving the frame body 41, a larger trimming range can be obtained without moving the vehicle body. Specifically, the connecting component 43 includes a bracket weldment 432 and a clamping plate 433. The clamping plate 433 and the bracket weldment 432 are respectively arranged on the front and rear sides of the cross beam 411 and are connected by a clamping bolt 431 to form a sliding channel. A plurality of limiting holes 412 are arranged on the cross beam 411. According to the working position of the hedge trimming device, an operator selects one of the limiting holes 412 as a reference point, moves the frame body 41 so that the limiting hole 412 is located in the sliding channel, and then realizes the lateral limitation of the frame body 41 by inserting a safety pin into the limiting hole 412.

[0072] In the embodiment of the present utility model, both the first crushing module 2 and the second crushing module 3 include a plunger motor serving as a driving member. When the hedge trimming device performs deep hedge trimming operations, the output shaft of the motor will be subjected to a large radial impact load. The plunger motor can withstand a greater load and is more suitable for deep trimming.

[0073] To achieve the above objectives, the present utility model also provides a greening comprehensive maintenance vehicle. Among them, the greening comprehensive maintenance vehicle includes a vehicle body and the above-mentioned hedge trimming device. The hedge trimming device is arranged on the vehicle body. Since the greening comprehensive maintenance vehicle adopts all the technical solutions of the above embodiment, it has at least the above-mentioned beneficial effects, which will not be elaborated here one by one.

[0074] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0076] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0077] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A hedge trimming device, characterized in that: The hedge trimming device comprises: The housing (1) comprises a cutter head cavity portion (11) and an air duct docking portion (12) which are sequentially arranged along a feeding direction, wherein the cutter head cavity portion (11) is arranged to be gradually contracted along the feeding direction, and an end of the air duct docking portion (12) which is away from the cutter head cavity portion (11) is used for communicating with an exhaust air duct (6); A first crushing module (2) is rotatably disposed in the cutter head cavity (11); The second crushing module (3) is rotatably disposed in the air duct docking portion (12).

2. The hedge trimmer according to claim 1, characterized in that: The blade cavity (11) is used to form a trimming opening (111) on one side facing the hedge trimming surface; the first crushing module (2) comprises a crushing blade (21) rotatably arranged on the blade cavity (11) and arranged opposite to the trimming opening (111); the second crushing module (3) comprises a crushing blade roller (31) spanning the inner cavity of the air duct docking portion (12) and rotatably arranged in the air duct docking portion (12).

3. The hedge trimmer according to claim 1, characterized in that: The first crushing module (2) is divided into a front crushing module (201) and a rear crushing module (202), the front crushing module (201) and the rear crushing module (202) are arranged in sequence along the feeding direction, and the rear crushing module (202) is arranged between two adjacent front crushing modules (201), and the crushing blades (21) of the two adjacent front crushing modules (201) rotate toward the rear crushing module (202) on the inner side.

4. The hedge trimmer device according to claim 3, characterized in that: The air duct docking portion (12) is disposed biased toward the discharge side of the rear crushing module (202).

5. The hedge trimmer according to claim 2, characterized in that: The pulverizing blade disc (21) comprises a blade disc rotating shaft (211), a mounting disc body (212) and blades, wherein the blades are divided into a first blade (213) and a second blade (214); the blade disc rotating shaft (211) is rotatably arranged on the blade disc cavity portion (11); the mounting disc body (212) is arranged on the blade disc rotating shaft (211) and is arranged opposite to the trimming opening (111); the first blade (213) and the second blade (214) are arranged in layers on the mounting disc body (212) along the length direction of the blade disc rotating shaft (211), and the first blade (213) and the second blade (214) are arranged staggered.

6. The hedge trimmer device according to claim 5, characterized in that: The crushing blade disc (21) also includes a connecting shaft assembly (215), and the connecting shaft assembly (215) includes a first shaft sleeve (2153) and a second shaft sleeve (2154), wherein the second shaft sleeve (2154) is inserted into the mounting disc body (212), one end of the first shaft sleeve (2153) passes through the blade and is embedded in the second shaft sleeve (2154), and the other end of the first shaft sleeve (2153) presses the blade onto the second shaft sleeve (2154).

7. A hedge trimmer according to any one of claims 1 to 6, characterized in that The hedge trimmer device also includes a connecting frame (4) for connecting to a vehicle body, and the cover (1) is connected to the connecting frame (4) in a manner that allows an adjustable pitch angle.

8. The hedge trimmer device according to claim 7, characterized in that A first hinge seat (13) and a second hinge seat (14) are provided on the top plate of the cover shell (1); the connecting frame (4) comprises a frame body (41) and an inclination adjustment assembly (42); the frame body (41) is formed with hinge holes and adjustment holes (413) arranged at intervals in the front and rear; the hinge holes are used for the frame body (41) to be correspondingly hinged with the first hinge seat (13); the adjustment hole (413) is extended along the length direction of the cover shell (1); the adjustment assembly comprises an adjustment rod (421) and two positioning members (422) arranged on the adjustment rod (421); one end of the adjustment rod (421) is hinged on the second hinge seat (14); the other end of the adjustment rod (421) passes through the adjustment hole (413); the two positioning members (422) are arranged at intervals from the adjustment hole (413) and are adjustable along the adjustment rod (421); And / or, a connecting component (43) is provided on the connecting frame (4), one end of the connecting component (43) is used to connect the vehicle body, the other end of the connecting component (43) forms a transversely penetrating sliding channel, and the connecting frame (4) is provided with a crossbeam (411) penetrating the sliding channel.

9. A hedge trimmer according to any one of claims 1 to 6, characterized in that The hedge trimming device further comprises a fixed blade (34) arranged at the inlet of the air duct docking portion (12); And / or, the first crushing module (2) and the second crushing module (3) both comprise a plunger motor configured as a driving member.

10. A greening comprehensive maintenance vehicle, characterized in that: The greening comprehensive maintenance vehicle comprises a vehicle body and a hedge trimming device according to any one of claims 1 to 9, wherein the hedge trimming device is arranged on the vehicle body.

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