A knife shaft quick-change structure for a grass combing machine

Abstract

This utility model provides a quick-change structure for the cutter shaft of a grass comber, comprising: a first mounting base disposed on the frame; a second mounting base, one end of the first mounting base having two connecting seats, and one end of the second mounting base rotatably disposed between the two connecting seats; both the first and second mounting bases having arc-shaped grooves, which, when engaged, form a fixed position for mounting the cutter shaft; and a fixing member disposed on the second mounting base. The rotatably connected first and second mounting bases, in conjunction with the arc-shaped grooves, form a fixed position for mounting the cutter shaft. When installing the cutter, the cutter shaft is installed in the arc-shaped grooves. After the first and second mounting bases are engaged, the shaft is fixed in the fixed position formed by the two arc-shaped grooves, secured by the fixing member. For subsequent disassembly of the cutter, simply remove the fixing member and open the second mounting base to quickly remove the cutter shaft.

Description

Technical Field

[0001] This utility model relates to the field of grass combing machine technology, and in particular to a quick-change structure for the blade shaft of a grass combing machine. Background Technology

[0002] Lawn combers are key mechanical equipment widely used in landscaping, orchards, lawn maintenance and other fields. Their main function is to effectively cut, comb and remove weeds and dead grass through high-speed rotating blades in order to beautify the environment, promote the healthy growth of turf or clean the work area.

[0003] In the actual use of a grass comber, the corresponding blades are replaced according to the function used. Currently, the main method is to lock and install the blades by using an integral fixed base and bolts. That is, the blade shaft is placed directly in the groove of an integral U-shaped or C-shaped fixed base, and then multiple bolts are passed through the mounting ears on both sides of the fixed base and tightened. The pressure of the bolts clamps the blade shaft in the groove. However, when changing blades, multiple bolts need to be loosened and tightened one by one with tools, which involves many steps and is time-consuming. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick-change blade shaft structure for a grass comber, which solves the problem of inconvenient blade replacement in existing grass combers.

[0005] According to the embodiments of this utility model, the following technical solution is adopted:

[0006] A quick-change mechanism for a cutter shaft in a hay comber, used to connect the cutter shaft and the frame, includes:

[0007] The first mounting bracket is located on the vehicle frame;

[0008] The second mounting base has two connecting seats at one end of the first mounting base and one end of the second mounting base is rotatably positioned between the two connecting seats. Both the first mounting base and the second mounting base have arc-shaped grooves. When the first mounting base and the second mounting base are engaged with each other, the two arc-shaped grooves form a fixed position for mounting the tool shaft.

[0009] A fastener, located on the second mounting base, is used to connect the second mounting base to the first mounting base.

[0010] Preferably, the fastener is a connecting screw, which passes through the second mounting base, and the first mounting base has a threaded hole corresponding to the connecting screw.

[0011] Preferably, the second mounting base has a strip groove, and the connecting screw passes through the strip groove.

[0012] Preferably, the first mounting base protrudes along its height direction to form a limiting part, and a limiting groove is formed between the limiting part and the first mounting base. The end of the second mounting base away from the connecting base is provided with a positioning block corresponding to the limiting groove.

[0013] Preferably, the first mounting base has a plurality of mounting holes, all of which penetrate the first mounting base.

[0014] Preferably, the bottom end of the first mounting base is provided with a plurality of connecting cylinders, which are coaxially corresponding to a plurality of mounting holes, and the connecting cylinders are provided with through holes.

[0015] Preferably, the inner side of the first mounting base is provided with several reinforcing ribs, and the several reinforcing ribs are respectively connected to several connecting cylinders.

[0016] Preferably, the second mounting base has a through groove.

[0017] Preferably, the through groove is provided with several connecting ribs.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By setting up a rotatable first mounting base and a second mounting base, and using arc-shaped grooves to form a fixed position for mounting the tool shaft, the tool shaft can be directly installed in the arc-shaped groove when installing the tool. After the first mounting base and the second mounting base are engaged, the mounting shaft can be fixed in the fixed position formed by the two arc-shaped grooves and secured by fasteners. Furthermore, when disassembling the tool, it is only necessary to remove the fasteners and open the second mounting base to quickly remove the tool shaft. Compared with existing technologies, this solution eliminates the need to use tools to tighten multiple bolts one by one, significantly reducing disassembly and assembly time and improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the grass comber and its enlarged portion in an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of the tool being mounted on the quick-change tool shaft in an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the quick-change tool shaft structure at one angle in an embodiment of this utility model.

[0023] Figure 4 This is a schematic diagram of the quick-change tool shaft structure from another angle in an embodiment of this utility model.

[0024] Figure 5 This is a bottom view of the quick-change tool shaft structure in an embodiment of this utility model.

[0025] Figure 6This is a schematic diagram of the fastening structure of the first mounting seat and the second mounting seat in the quick-change structure of the cutter shaft in this embodiment of the present invention.

[0026] In the above figures: 1. First mounting base; 101. Connecting base; 102. Arc-shaped groove; 103. Limiting part; 104. Limiting groove; 105. Mounting hole; 106. Threaded hole; 2. Second mounting base; 201. Positioning block; 202. Strip groove; 203. Through groove; 204. Connecting rib; 3. Connecting screw; 4. Connecting cylinder; 401. Through hole; 402. Reinforcing rib; 5. Frame; 6. Tool shaft. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0028] This utility model embodiment proposes a quick-change structure for the cutter shaft of a grass comber, used to connect the cutter shaft 6 and the frame 5, including:

[0029] The first mounting base 1 is located on the vehicle frame 5;

[0030] The second mounting base 2 has two connecting seats 101 at one end of the first mounting base 1 and one end of the second mounting base 2 is rotatably located between the two connecting seats 101. Both the first mounting base 1 and the second mounting base 2 have arc-shaped grooves 102. When the first mounting base 1 and the second mounting base 2 are engaged with each other, the two arc-shaped grooves 102 form a fixed position for mounting the tool shaft 6.

[0031] A fastener is provided on the second mounting base 2 for connecting the second mounting base 2 to the first mounting base 1.

[0032] In the embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the first mounting base 1 is fixedly installed on the bottom of the frame 5. The fixing method includes, but is not limited to, screws and welding. The tool shaft 6 has a transmission part and a mounting part. The transmission part is mainly connected to the transmission unit inside the frame 5. The tool shaft quick-change structure provided in this solution is connected to the mounting part of the tool shaft 6. Of course, the transmission part and the transmission unit are also detachably connected, such as by snap-fit. When installing the tool shaft 6, the transmission part is installed first and then the mounting part is assembled to the tool shaft quick-change structure.

[0033] like Figure 3 and Figure 4As shown, the second mounting base 2 is rotatably connected between the two connecting seats 101 of the first mounting base 1 via a pin. Without any limiting, when the first mounting base 1 is fixed, the second mounting base 2 can be rotated freely, allowing it to rotate around the pin in the connecting seat 101. When installing the tool, the tool shaft 6 is installed in the arc-shaped groove 102 of the first mounting base 1. When the first mounting base 1 and the second mounting base 2 are engaged, the arc-shaped groove 102 of the second mounting base 2 engages with the arc-shaped groove 102 of the first mounting base 1, fixing the tool shaft 6 in the fixed position formed by the two arc-shaped grooves 102. Finally, it is fixed with a fastener, the size of which is approximately the same as the bearing of the tool shaft 6. When the tool needs to be replaced later, simply remove the fastener and open the second mounting base 2 to quickly remove the tool shaft 6. Compared to existing technologies, this solution eliminates the need to use tools to tighten multiple bolts individually, significantly reducing disassembly and assembly time and improving work efficiency. After installation, as shown... Figure 6 As shown.

[0034] Based on the above solution, the structure of the fastener is optimized, such as... Figure 3 As shown, the fastener is a connecting screw 3, which passes through the second mounting base 2. The first mounting base 1 has a threaded hole 106 corresponding to the connecting screw 3. The fastener uses the connecting screw 3 and the threaded hole 106 to achieve a locking connection between the second mounting base 2 and the first mounting base 1. Compared with the traditional multi-bolt fastening structure, the fastener and the connecting base 101 only require one connecting screw 3 to complete the clamping action. The overall structure layout is reasonable, the number of parts is small, and the assembly steps are simple.

[0035] Meanwhile, the second mounting base 2 has a strip groove 202, and the connecting screw 3 passes through the strip groove 202. In order to facilitate the installation of the connecting screw 3, when processing the second mounting base 2, the original hole structure can be processed into a strip groove 202 structure. Thus, when the first mounting base 1 and the second mounting base 2 are engaged, the connecting screw 3 can slide in the strip groove 202 until the end corresponds to the threaded hole 106. Finally, tightening can complete the installation.

[0036] Specifically, such as Figure 3 and Figure 4 As shown, the first mounting base 1 protrudes along its height direction to form a limiting part 103, and a limiting groove 104 is formed between the limiting part 103 and the first mounting base 1. The second mounting base 2 has a positioning block 201 corresponding to the limiting groove 104 at one end away from the connecting base 101. By setting the limiting part 103 on the first mounting base 1 and forming the limiting groove 104 therewith, it can be ensured that the second mounting base 2 can be accurately aligned and enter the predetermined position when closed, and at the same time, it plays a role in left and right limiting, avoiding the connecting screw 3 from being subjected to radial force and affecting the connection strength.

[0037] Based on the above solutions, such as Figure 4 and Figure 5 As shown, the first mounting base 1 has several mounting holes 105, all of which penetrate the first mounting base 1. When assembling the first mounting base 1, by configuring a corresponding number of threaded connecting holes in the frame 5, the bottom surface of the first mounting base 1 is directly placed against the mounting position on the frame 5. Finally, connecting screws are passed through each mounting hole 105 and connected to the mounting holes 105, quickly and easily fixing the first mounting base 1 onto the frame 5. In the initial assembly stage, the first mounting base 1 can be quickly fixed onto the frame 5. During later maintenance, the first mounting base 1 can be disassembled by unscrewing each screw.

[0038] Specifically, the bottom end of the first mounting base 1 is provided with a plurality of connecting cylinders 4, which are coaxially corresponding to a plurality of mounting holes 105, and the connecting cylinders 4 are provided with through holes 401. The end face of the connecting cylinder 4 is flush with the bottom plane of the first mounting base 1, which not only ensures the structural strength of the first mounting base 1, but also increases the contact area between the first mounting base 1 and the mounting surface of the frame 5, thus ensuring the connection strength between the screws connected to the connecting cylinders 4 and the frame 5.

[0039] Meanwhile, the inner side of the first mounting base 1 is provided with a number of reinforcing ribs 402, which are respectively connected to a number of connecting cylinders 4. By connecting the outer side of the connecting cylinder 4 and the inner side of the first mounting base 1 with a number of reinforcing ribs 402, the radial force strength of the connecting cylinder 4 can be increased, the connecting cylinder 4 can be prevented from bending during the fastening process, and the overall structural strength can be guaranteed.

[0040] Specifically, such as Figure 4 As shown, the second mounting base 2 has a through groove 203. While ensuring the overall strength of the second mounting base 2, the overall mass of the second mounting base 2 can be reduced by opening the through groove 203. At the same time, the through groove 203 is provided with several connecting ribs 204, which further improves the structural strength of the second mounting base 2.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick-change structure for a blade shaft in a hay comber, used to connect the blade shaft (6) and the frame (5), characterized in that, include: A first mounting base (1) is provided on the vehicle frame (5); The second mounting base (2) has two connecting seats (101) at one end of the first mounting base (1) and one end of the second mounting base (2) is rotatably disposed between the two connecting seats (101). Both the first mounting base (1) and the second mounting base (2) have arc-shaped grooves (102). When the first mounting base (1) and the second mounting base (2) are engaged with each other, the two arc-shaped grooves (102) form a fixed position for mounting the tool shaft (6). A fastener is provided on the second mounting base (2) for connecting the second mounting base (2) to the first mounting base (1).

2. The quick-change structure for the blade shaft of a hay comber according to claim 1, characterized in that, The fastener is a connecting screw (3), which passes through the second mounting base (2). The first mounting base (1) has a threaded hole (106) corresponding to the connecting screw (3).

3. The quick-change structure for the blade shaft of a hay comber according to claim 2, characterized in that, The second mounting base (2) has a strip groove (202), and the connecting screw (3) passes through the strip groove (202).

4. The quick-change structure for the blade shaft of a hay comber according to claim 1, characterized in that, The first mounting base (1) protrudes along its height direction to form a limiting part (103), and a limiting groove (104) is formed between the limiting part (103) and the first mounting base (1). The second mounting base (2) has a positioning block (201) at one end away from the connecting base (101) that corresponds to the limiting groove (104).

5. The quick-change structure for the blade shaft of a hay comber according to claim 1, characterized in that, The first mounting base (1) has a plurality of mounting holes (105), and all of the mounting holes (105) penetrate the first mounting base (1).

6. The quick-change structure for the blade shaft of a hay comber according to claim 5, characterized in that, The bottom end of the first mounting base (1) is provided with a plurality of connecting cylinders (4), and the plurality of connecting cylinders (4) are coaxially corresponding to the plurality of mounting holes (105), and the connecting cylinders (4) are provided with through holes (401).

7. A quick-change structure for the blade shaft of a hay comber according to claim 6, characterized in that, The inner side of the first mounting base (1) is provided with a plurality of reinforcing ribs (402), and the plurality of reinforcing ribs (402) are respectively connected to the plurality of connecting cylinders (4).

8. The quick-change structure for the blade shaft of a hay comber according to claim 1, characterized in that, The second mounting base (2) has a through groove (203).

9. A quick-change structure for the blade shaft of a hay comber according to claim 8, characterized in that, The through groove (203) is provided with several connecting ribs (204).

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