A trenching mechanism and hand-held trencher

Abstract

The utility model discloses a ditching mechanism and hand -held ditching machine, ditching mechanism includes base, the ditching subassembly of rotation setting on the base and respectively fixed setting in the protection cover subassembly of base, protection pole subassembly, the driving mechanism that ditching subassembly includes, its rotation through -penetrating setting is on the base, the guide plate mechanism of adjustable fixed setting on the base, the driven wheel mechanism of rotation setting on the guide plate mechanism and with driving mechanism opposite setting, the chain cutter mechanism of rotation setting between driving mechanism and driven wheel mechanism, its activity around setting is on the guide plate mechanism. The utility model discloses through the mutual cooperation of guide plate mechanism, driven wheel mechanism and chain cutter mechanism realizes ditching operation, makes the compact structure of whole ditching subassembly, and simultaneously through the cooperation of protection cover subassembly and protection pole subassembly blocks the soil that ditching produces, has effectively solved the problem that the existing ditching machine occupies the space of being relatively big inconveniently carries out handheld operation.

Description

Technical Field

[0001] This utility model relates to the field of trenching machine technology, and in particular to a trenching mechanism and a handheld trenching machine. Background Technology

[0002] Trenching machines can be used in construction projects to excavate narrow and deep underground trenches for laying underground drainage pipes, or by railway, post and telecommunications, and urban construction departments for laying cables and pipes. They can also be used in orchards, vegetable gardens, and other farmland environments for trenching, fertilization, drainage, planting, and irrigation.

[0003] CN222435385U discloses a trenching machine for garden construction, including a base, a rotating base, and a soil-covering plate. The rotating base has a second fixed seat fixedly connected to its top. A second rotating block is rotatably connected inside the second fixed seat. A first telescopic rod is fixedly connected to the top of the second rotating block. A first spring is sleeved on the outside of the first telescopic rod. The top of the first spring abuts against the first rotating block. A first fixed seat is rotatably connected to the outside of the first rotating block. The first fixed seat is fixedly connected to the top of a pressing plate, which is rotatably connected to the base. While this technical solution can solve the problem that existing trenching machines generally vibrate significantly during operation, potentially causing broken soil to fall back into the ditch, it is also bulky and heavy, occupying a large space and making storage and transportation inconvenient. Therefore, a trenching mechanism and a handheld trenching machine are provided to solve the above problems. Utility Model Content

[0004] One of the purposes of this utility model is to provide a trenching mechanism and a handheld trencher, so as to solve the problem that existing trenchers occupy a large space and are inconvenient to operate by hand.

[0005] This utility model relates to a trenching mechanism and a handheld trencher, which can be achieved through the following technical solutions:

[0006] This utility model discloses a trenching mechanism for a handheld trencher, comprising a base; a trenching assembly rotatably mounted on the base; a protective cover assembly fixedly mounted on the base and positioned relative to the rear side of the trenching assembly; and a protective bar assembly fixedly mounted on the base and positioned relative to the top of the trenching assembly.

[0007] The trenching assembly includes a drive mechanism that is rotatably disposed on the base; a guide plate mechanism that is adjustablely fixed on the base and disposed on the side of the drive mechanism; a driven wheel mechanism that is rotatably disposed on the guide plate mechanism and disposed opposite to the drive mechanism; and a chain cutter mechanism that is rotatably disposed between the drive mechanism and the driven wheel mechanism and is movably disposed around the guide plate mechanism.

[0008] In one embodiment, the drive mechanism includes a bearing, the outer ring of which is fixedly disposed in the mounting cavity of the base; a rotating shaft connected to the inner ring of the bearing, which is rotatable relative to the base through the bearing; and a drive wheel and a drive sprocket respectively fixedly disposed at opposite ends of the rotating shaft, the drive sprocket being drively connected to the chain cutter mechanism.

[0009] In one embodiment, the guide plate mechanism includes a guide plate body, one end of which is disposed on the side of the base; a pressure plate structure that passes through the guide plate body and is fixedly connected to the base; and a tensioning structure that is fixedly disposed on the guide plate body and can be fixedly connected to the base.

[0010] In one embodiment, an adjustment groove is provided through one end of the guide plate body near the base; the pressure plate structure includes a pressure plate body and fastening screws, the pressure plate body is disposed on the side of the adjustment groove, and the fastening screws pass through the pressure plate body and the adjustment groove in sequence and are fastened to the base.

[0011] In one embodiment, the tensioning structure includes a tensioning block fixedly disposed on the guide plate body; and an adjusting screw disposed on the tensioning block and capable of being adjusted and threadedly connected to the base.

[0012] In one embodiment, the chain cutter mechanism includes a chain body, which is driven between the driving sprocket and the driven sprocket and rotates around the guide plate body; and a plurality of first cutters and a plurality of second cutters are respectively obliquely spaced at opposite ends of the chain body.

[0013] In one embodiment, the protective cover assembly includes a protective cover body and a plurality of mudguards; the protective cover body is fixedly disposed on the base and disposed on the opposite rear side of the trenching assembly; the plurality of mudguards are respectively fixedly disposed on the side of the protective cover body.

[0014] In one embodiment, the guardrail assembly includes a mounting base fixedly disposed on the base and positioned above the trenching assembly; and a guardrail body fixedly disposed on the mounting base, which is parallel to the extending direction of the guide plate body.

[0015] This utility model discloses a handheld trencher, which includes the trenching mechanism and the drive mechanism described in any one of the above-mentioned claims, wherein the trenching mechanism is tractively mounted on the drive mechanism.

[0016] In one embodiment, the drive mechanism includes a drive body and a first handle and a second handle respectively fixedly disposed on the drive body.

[0017] Compared with the prior art, the beneficial effects of this utility model of a trenching mechanism and a handheld trencher are as follows:

[0018] This utility model discloses a trenching mechanism and a handheld trencher. A drive mechanism sequentially rotates a drive wheel, a rotating shaft, a driving sprocket, a chain cutter mechanism, and a driven sprocket. Multiple first and second cutters mounted on the chain body work synchronously to achieve trenching. This design makes the handheld trencher compact. Two handles are provided on the drive mechanism, allowing users to easily grip and operate the trencher, effectively solving the problem of existing trenchers being too space-consuming and inconvenient for handheld operation. Furthermore, the protective cover and protective bar components effectively prevent soil from splashing onto the user during trenching, improving the user experience to some extent. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a trenching mechanism according to the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of a trenching mechanism according to this utility model from another perspective;

[0022] Figure 3 This is an exploded structural diagram of a trenching mechanism according to the present invention, including trenching components;

[0023] Figure 4 yes Figure 3 The exploded structural diagram of the trenching assembly shown includes a drive mechanism, a guide plate mechanism, a driven wheel mechanism, and a chain cutter mechanism;

[0024] Figure 5 yes Figure 4 A three-dimensional structural schematic diagram of the driving mechanism shown;

[0025] Figure 6 yes Figure 4 A schematic diagram showing the connection structure between the guide plate mechanism and the driven wheel mechanism;

[0026] Figure 7 yes Figure 4 A three-dimensional structural schematic diagram of the chain knife mechanism shown;

[0027] Figure 8This is a three-dimensional structural diagram of a handheld trencher according to the present invention.

[0028] The diagram indicates the following: 10, trenching mechanism; 11, base; 111, mounting cavity; 12, trenching assembly; 121, drive mechanism; 1211, bearing; 1212, rotating shaft; 1213, drive wheel; 1214, drive sprocket; 122, guide plate mechanism; 1221, guide plate body; 12211, adjusting groove; 1222, pressure plate structure; 12221, pressure plate body; 12222, fastening screw; 1223, tensioning structure; 12231, tensioning block; 12232, adjusting screw. 123, Driven wheel mechanism; 1231, First fixed plate; 1232, Second fixed plate; 1233, Driven sprocket; 124, Chain knife mechanism; 1241, Chain body; 1242, First knife; 1243, Second knife; 13, Protective cover assembly; 131, Protective cover body; 132, Mudguard; 14, Protective bar assembly; 141, Fixed seat; 142, Protective bar body; 20, Drive mechanism; 21, Drive body; 22, First handle; 23, Second handle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] Please see Figures 1-3 As shown, the trenching mechanism 10 of this utility model is mainly applied to a handheld trencher, which includes a base 11, a trenching component 12, a protective cover component 13, and a protective bar component 14. The base 11 serves as the supporting body. The trenching component 12 is rotatably mounted on the base 11, and trenching is performed by rotating the trenching component 12. The protective cover component 13 and the protective bar component 14 are respectively fixedly mounted on the base 11, and the cooperation of the protective cover component 13 and the protective bar component 14 prevents soil from splashing towards the user during the trenching process. Specifically, an installation cavity 111 is provided through the base 11.

[0032] Please see Figures 1-4As shown, in this embodiment, the trenching assembly 12 includes a drive mechanism 121, a guide plate mechanism 122, a driven wheel mechanism 123, and a chain cutter mechanism 124. The drive mechanism 121 is rotatably mounted on the base 11 through the mounting cavity 111. The guide plate mechanism 122 is adjustablely fixed on the base 11 and is located on the side of the drive mechanism 121. The driven wheel mechanism 123 is rotatably mounted on the guide plate mechanism 122 and is arranged opposite to the drive mechanism 121. The chain cutter mechanism 124 is rotatably mounted between the drive mechanism 121 and the driven wheel mechanism 123 and is movably arranged around the guide plate mechanism 122. The drive mechanism 121 drives the chain cutter mechanism 124 to move on the guide plate mechanism 122, and the guide plate mechanism 122 guides and limits the movement of the chain cutter mechanism 124.

[0033] Please see Figures 3-5 As shown, specifically, the drive mechanism 121 includes a bearing 1211, a rotating shaft 1212, a drive wheel 1213, and a drive sprocket 1214. The outer ring of the bearing 1211 is fixedly disposed in the mounting cavity 111. The rotating shaft 1212 passes through and connects to the inner ring of the bearing 1211, and the rotating shaft 1212 can rotate relative to the base 11 through the bearing 1211. The drive wheel 1213 and the drive sprocket 1214 are respectively fixedly disposed on opposite ends of the rotating shaft 1212. The drive wheel 1213 is connected to the drive mechanism 20, and the drive sprocket 1214 is connected to the chain cutter mechanism 124. The drive mechanism 20 drives the chain cutter mechanism 124 to rotate on the guide plate mechanism 122 in sequence through the drive wheel 1213, the rotating shaft 1212, and the drive sprocket 1214, thereby realizing the trenching operation.

[0034] Please see Figure 3 , Figure 4 and Figure 6As shown, in this embodiment, the guide plate mechanism 122 includes a guide plate body 1221, a pressure plate structure 1222, and a tensioning structure 1223. One end of the guide plate body 1221 is disposed on the side of the base 11. The pressure plate structure 1222 passes through the guide plate body 1221 and is fixedly connected to the base 11, thereby fixing the guide plate body 1221 on the base 11. The tensioning structure 1223 is fixedly disposed on the guide plate body 1221 and can be fixedly connected to the base 11. The position of the guide plate body 1221 on the base 11 can be adjusted by the tensioning structure 1223, thereby facilitating the replacement operation of the chain knife mechanism 124. Specifically, an adjustment groove 12211 is provided through one end of the guide plate body 1221 near the base 11, and the pressure plate structure 1222 passes through the guide plate body 1221 through the adjustment groove 12211. The pressure plate structure 1222 includes a pressure plate body 12221 and a fastening screw 12222. The pressure plate body 12221 is located on the side of the adjustment groove 12211, and the fastening screw 12222 passes through the pressure plate body 12221 and the adjustment groove 12211 in sequence and is fastened to the base 11, thereby fixing the guide plate body 1221 to the base 11. Specifically, the tensioning structure 1223 includes a tensioning block 12231 and an adjusting screw 12232. The tensioning block 12231 is fixedly mounted on the guide plate body 1221, and the adjusting screw 12232 is mounted on the tensioning block 12231 and can be adjusted threadedly connected to the base 11. The position of the guide plate body 1221 on the base 11 can be adjusted by turning the adjusting screw 12232.

[0035] Please see Figure 3 , Figure 4 and Figure 6 As shown, specifically, the driven wheel mechanism 123 includes a first fixed plate 1231, a second fixed plate 1232, and a driven sprocket 1233; the first fixed plate 1231 and the second fixed plate 1232 are fixedly disposed on the other end of the guide plate body 1221 away from the base 11; the driven sprocket 1233 is rotatably disposed between the first fixed plate 1231 and the second fixed plate 1232, and the chain cutter mechanism 124 is rotatably disposed on the driven sprocket 1233.

[0036] Please see Figure 3 , Figure 4 and Figure 7As shown, specifically, the chain cutter mechanism 124 includes a chain body 1241, a plurality of first cutters 1242, and a plurality of second cutters 1243. The chain body 1241 is driven between the driving sprocket 1214 and the driven sprocket 1233 and is rotatably arranged around the guide plate body 1221. The plurality of first cutters 1242 and the plurality of second cutters 1243 are respectively obliquely spaced at opposite ends of the chain body 1241. The drive mechanism 121 drives the chain body 1241 to move on the guide plate body 1221, thereby synchronously driving the plurality of first cutters 1242 and the plurality of second cutters 1243 to move to realize the trenching operation.

[0037] Please see Figures 1-3 As shown, in this embodiment, the protective cover assembly 13 includes a protective cover body 131 and a plurality of mudguards 132; the protective cover body 131 is fixedly mounted on the base 11 and positioned on the opposite rear side of the trenching assembly 12; the plurality of mudguards 132 are respectively fixedly mounted on the sides of the protective cover body 131, and the cooperation of the protective cover body 131 and the plurality of mudguards 132 prevents soil from splashing towards the user during the trenching process. In this embodiment, the protective bar assembly 14 includes a fixing seat 141 and a protective bar body 142; the fixing seat 141 is fixedly mounted on the base 11 and positioned on the opposite upper side of the trenching assembly 12; the protective bar body 142 is fixedly mounted on the fixing seat 141 and is arranged parallel to the extending direction of the guide plate body 1221, and the protective bar body 142 blocks soil from splashing during the trenching process.

[0038] Please see Figure 8 As shown, this utility model discloses a handheld trencher, comprising a trenching mechanism 10 and a drive mechanism 20 as described above. The trenching mechanism 10 is driven onto the drive mechanism 20, which drives the drive wheel 1213 to rotate, thereby sequentially driving the rotating shaft 1212, the drive sprocket 1214, and the chain cutter mechanism 124 to rotate and perform trenching operations. Specifically, the drive mechanism 20 includes a drive body 21, a first handle 22, and a second handle 23. The drive body 21 is the power unit, which uses existing technology, so its specific working process and product model are not described here, as long as they meet the requirements of this application. The first handle 22 and the second handle 23 are respectively fixedly mounted on the drive body 21, allowing the user to grip the first handle 22 and the second handle 23 with both hands, thus facilitating the operation of the handheld trencher.

[0039] It should be noted that the specific working process of the trenching mechanism and handheld trencher of this utility model is as follows: the drive mechanism 20 sequentially drives the drive wheel 1213, the rotating shaft 1212, the active sprocket 1214, the chain cutter mechanism 124, and the driven sprocket 1233 to rotate. The trenching operation is realized by the synchronous operation of multiple first cutters 1242 and multiple second cutters 1243 set on the chain body 1241. At the same time, the protective cover assembly 13 and the protective bar assembly 14 cooperate to prevent soil from splashing towards the user during the trenching process.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A trenching mechanism, applied to a handheld trencher, characterized in that, include: Base; A trenching assembly, which is rotatably mounted on the base; A protective cover assembly, which is fixedly mounted on the base and disposed on the opposite rear side of the trenching assembly; A protective bar assembly, which is fixedly mounted on the base and positioned above the trenching assembly; The trenching assembly includes a drive mechanism that is rotatably disposed on the base; an adjustable guide plate mechanism that is fixedly disposed on the base and disposed on the side of the drive mechanism; a driven wheel mechanism that is rotatably disposed on the guide plate mechanism and disposed opposite to the drive mechanism; and a chain cutter mechanism that is rotatably disposed between the drive mechanism and the driven wheel mechanism and is movably disposed around the guide plate mechanism.

2. The trenching mechanism according to claim 1, characterized in that, The drive mechanism includes a bearing, the outer ring of which is fixedly disposed in the mounting cavity of the base; a rotating shaft connected to the inner ring of the bearing, which is rotatable relative to the base through the bearing; a drive wheel and a drive sprocket respectively fixedly disposed at opposite ends of the rotating shaft, the drive sprocket being drively connected to the chain cutter mechanism.

3. An opening device according to claim 2, characterised in that The guide plate mechanism includes a guide plate body, one end of which is disposed on the side of the base; a pressure plate structure that passes through the guide plate body and is fixedly connected to the base; and a tensioning structure that is fixedly disposed on the guide plate body and can be fixedly connected to the base.

4. An opening device according to claim 3, characterised in that An adjustment groove is provided through one end of the guide plate body near the base; the pressure plate structure includes a pressure plate body and fastening screws, the pressure plate body is located on the side of the adjustment groove, and the fastening screws pass through the pressure plate body and the adjustment groove in sequence and are fastened to the base.

5. An opening device according to claim 3, characterised in that The tensioning structure includes a tensioning block, which is fixedly mounted on the guide plate body; and an adjusting screw mounted on the tensioning block and capable of being adjusted and threadedly connected to the base.

6. An opening device according to claim 3, characterised in that The chain cutter mechanism includes a chain body, which is driven between the driving sprocket and the driven sprocket and rotates around the guide plate body; and a plurality of first cutters and a plurality of second cutters are respectively obliquely spaced at opposite ends of the chain body.

7. An opening device according to claim 1, characterized in that The protective cover assembly includes a protective cover body and multiple mudguards; the protective cover body is fixedly mounted on the base and disposed on the opposite rear side of the trenching assembly; the multiple mudguards are respectively fixedly mounted on the side of the protective cover body.

8. An opening device according to claim 3, characterised in that The protective bar assembly includes a fixing seat, which is fixedly mounted on the base and positioned above the trenching assembly; and a protective bar body, which is fixedly mounted on the fixing seat and is arranged parallel to the extension direction of the guide plate body.

9. A handheld trencher, characterized in that, It includes the trenching mechanism and the driving mechanism as described in any one of claims 1-8, wherein the trenching mechanism is tractively mounted on the driving mechanism.

10. A handheld trencher according to claim 9, characterized in that, The drive mechanism includes a drive body and a first handle and a second handle, which are respectively fixedly mounted on the drive body.

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