Pruning machine blade assembly

Abstract

This utility model discloses a pruning machine blade assembly, including a first blade (1), a second blade (2), a pressure strip (3), a partition strip (4), a drive gear (5), and multiple sets of fixing bolts and nuts. The drive gear (5) has an integrally structured central block (21), and the central block (21) has at least one positioning rod (14) that passes through the first disc (11) and the second disc (13). Rotating the drive gear (5) causes the first blade (1) and the second blade (2) to reciprocate linearly. This pruning machine blade assembly uses an integrally structured drive gear, which drives the tail ends of the two blades with the body of the drive gear, while fixing the positioning rod of the drive gear to the central block of the drive gear, thus improving the connection strength, reducing the probability of loosening, and eliminating the risk of slippage.

Description

Technical Field

[0001] This utility model relates to the field of garden equipment technology, specifically a pruning machine blade assembly. Background Technology

[0002] Pruning machines are commonly used in gardening to trim branches or shrubs. A drive gear at the tail end of the pruning machine's blade assembly connects to a power mechanism and two blades, causing the blades to extend and retract for cutting. The drive gear consists of two parts: an outer ring connected to the power mechanism and an inner ring connected to the tail ends of the two blades. In existing technology, the inner ring of the drive gear is constructed by pre-forming a connecting tube of a certain thickness, with a connecting block fixed inside the tube. The thickness of the connecting block is greater than the thickness of the drive gear. This structure drives the tail ends of the two blades through the connecting block during operation. However, because the connecting block and the connecting tube are interference-fitted, there is a possibility of loosening over time; moreover, the periodic impact load generated when the blades cut branches poses a risk of slippage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an integrated drive gear, in which the body of the drive gear drives the tail ends of the two blades, and at the same time fixes the positioning rod of the drive gear to the center block of the drive gear, so as to improve the connection strength, reduce the probability of loosening and eliminate the risk of slippage in the pruning machine blade assembly.

[0004] The technical solution of this utility model is to provide a pruning machine blade assembly with the following structure, including a first blade, a second blade, a pressure strip, a partition strip, a drive gear, and multiple sets of fixing bolts and nuts; the first blade includes a first cutting blade at the front end and a first drive end at the rear end, and the second blade includes a second cutting blade at the front end and a second drive end at the rear end; the first drive end and the second drive end are connected to the drive gear at the tail end, characterized in that: the drive gear has an integrally formed central block, the first drive end has a first through hole, a first disk is provided in the first through hole, the second drive end has a second through hole, a second disk is provided in the second through hole, the central block has at least one positioning rod that passes through the first disk and the second disk, the positioning rod passes through the eccentric position of the first disk and the eccentric position of the second disk, and the eccentric positions of the first disk and the second disk are symmetrical along the circumference of the central block, and rotating the drive gear causes the first blade and the second blade to reciprocate linearly.

[0005] The central block is provided with two positioning rods. The first disk has two third through holes at its eccentric position, and the second disk has two fourth through holes at its eccentric position. Each positioning rod passes through a third through hole and a fourth through hole at the corresponding upper and lower positions. The two third through holes and the two fourth through holes are symmetrical about the circumference of the central block.

[0006] The first through hole and the second through hole are elongated slotted holes arranged laterally along the blade assembly.

[0007] According to the pruning machine blade assembly as claimed, the central block is located at the center of the drive gear and is fixed on its side by multiple spokes, and one end of the positioning rod is embedded in the hole of the central block.

[0008] The central block and all connected spokes are integrated with the drive gear.

[0009] A first pad is provided between the drive gear and the two end faces of the first drive end, a second pad is provided between the two end faces of the first drive end and the second drive end, and a third pad is provided on the outer bottom surface of the second drive end.

[0010] All the positioning rods on the central block pass through the first pad, the second pad, and the third pad, thereby enabling the first pad, the second pad, and the third pad to rotate synchronously with the drive gear.

[0011] The pruning machine blade assembly according to the claim is characterized in that: the area of ​​the first pad, the second pad, and the third pad is greater than the area of ​​the first through hole and the second through hole.

[0012] With the above structure, this utility model has the following advantages: 1. The drive gear has an integrally formed central block, allowing the drive gear body to directly transmit the driving force to the central block, which then drives the tail ends of the two blades, making the drive more direct and reliable. It also eliminates the need for a separate central block, increasing the fit accuracy and driving strength between the central block and the blade tail ends. 2. Furthermore, since the first drive end has a first through hole containing a first disc, and the second drive end has a second through hole containing a second disc, and the central block has at least one positioning rod passing through both the first and second discs, with the positioning rod passing through eccentric positions of both the first and second discs, and these positions being symmetrically circumferential along the central block, rotating the drive gear causes the first and second blades to reciprocate linearly. This structure allows the central block to drive its respective connected blades via the first and second discs during rotation.

[0013] As an improvement, the central block is provided with two positioning rods. The first disk has two third through holes at its eccentric position, and the second disk has two fourth through holes at its eccentric position. Each positioning rod passes through a third through hole and a fourth through hole at the corresponding upper and lower positions. The two third through holes and the two fourth through holes are symmetrical about the circumference of the central block. By using two positioning rods, two points determine a straight line, which improves the circumferential limiting of the drive and prevents slippage.

[0014] As an improvement, the center block is located at the center of the drive gear and is fixed to the side by multiple spokes, and one end of the positioning rod is embedded in the hole of the center block to increase the fixing strength of the center block.

[0015] As an improvement, the center block and all the connecting spokes are integrally formed with the drive gear, increasing strength.

[0016] As an improvement, a first pad is provided between the drive gear and the two end faces of the first drive end, a second pad is provided between the two end faces of the first drive end and the second drive end, and a third pad is provided on the outer bottom surface of the second drive end. The pads serve a protective function, ensuring that the blades and the drive gear maintain a set distance. Attached Figure Description

[0017] Figure 1 This is an exploded view of the pruning machine blade assembly of this utility model.

[0018] Figure 2 This is a schematic diagram showing the connection between the drive gear and the blade of this utility model.

[0019] Figure 3 This is a perspective view of one side where the two blades of this utility model are connected.

[0020] Figure 4 This is a perspective view of one of the connected sides of the two blades of this utility model.

[0021] Figure 5 This is a split view of the two blades of this utility model.

[0022] Figure 6 for Figure 5 Enlarged schematic diagram of part A.

[0023] Figure 7 This is a schematic diagram of the drive gear of this utility model.

[0024] Figure 8 This is a schematic diagram of the tail section of the pruning machine blade assembly of this utility model.

[0025] As shown in the figure,

[0026] 1. First blade, 2. Second blade, 3. Pressure bar, 4. Partition bar, 5. Drive gear, 6. First cutting blade, 7. First drive end, 8. Second cutting blade, 9. Second drive end, 10. First through hole, 11. First disc, 12. Second through hole, 13. Second disc, 14. Positioning rod, 15. Third through hole, 16. Fourth through hole, 17. Spoke, 18. First pad, 19. Second pad, 20. Third pad, 21. Center block. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-8 As shown, the pruning machine blade assembly of this utility model includes a first blade 1, a second blade 2, a pressing strip 3, a partition strip 4, a drive gear 5, and multiple sets of fixing bolts and nuts. The first blade 1 includes a first cutting blade 6 at the front end and a first drive end 7 at the rear end. The second blade 2 includes a second cutting blade 8 at the front end and a second drive end 9 at the rear end. The first drive end 7 and the second drive end 9 are connected to the drive gear 5 at the rear end. Rotating the drive gear 5 causes the first blade 1 and the second blade 2 to reciprocate linearly.

[0029] like Figure 1 , Figure 2 and Figure 7 As shown, the drive gear 5 has an integrally formed center block 21. The center block 21 is located at the center of the drive gear 5 and is fixed to its side by multiple spokes 17. One end of the positioning rod 14 is embedded in a hole in the center block 21. The center block 21 and all the connected spokes 17 are integrally formed with the drive gear 5. The thickness of the center block 21 is greater than the thickness of the drive gear 5 body, and the thickness of all the spokes 17 is less than the thickness of the drive gear 5 body.

[0030] like Figure 1 and Figure 8 As shown, the first driving end 7 is provided with a first through hole 10, and a first disk 11 is provided inside the first through hole 10, as shown. Figure 3 As shown. The second driving end 9 is provided with a second through hole 12, and a second disk 13 is provided inside the second through hole 12, as shown. Figure 4 As shown.

[0031] The central block 21 is provided with at least one positioning rod 14 that passes through the first disk 11 and the second disk 13. The positioning rod 14 passes through the eccentric position of the first disk 11 and the eccentric position of the second disk 13, and the eccentric positions of the first disk 11 and the second disk 13 are symmetrical around the circumference of the central block 21. The rotating drive gear 5 causes the first blade 1 and the second blade 2 to reciprocate linearly.

[0032] like Figure 8 As shown, the central block 21 is provided with two positioning rods 14, the first disk 11 is provided with two third through holes 15 at an eccentric position, and the second disk 13 is provided with two fourth through holes 16 at an eccentric position. Each positioning rod 14 passes through a third through hole 15 and a fourth through hole 16 at corresponding upper and lower positions. The two third through holes 15 and the two fourth through holes 16 are symmetrical about the circumference of the central block 21.

[0033] like Figure 8 As shown, the first through hole 10 and the second through hole 12 are elongated holes arranged laterally along the blade assembly.

[0034] A first pad 18 is provided between the two end faces of the drive gear 5 and the first drive end 7, a second pad 19 is provided between the two end faces of the first drive end 7 and the second drive end 9, and a third pad 20 is provided on the outer bottom surface of the second drive end 9.

[0035] All the positioning rods 14 on the central block 21 pass through the first pad 18, the second pad 19, and the third pad 20, thereby enabling the first pad 18, the second pad 19, and the third pad 20 to rotate synchronously with the drive gear 5. The area of ​​the first pad 18, the second pad 19, and the third pad 20 is larger than the area of ​​the first through hole 10 and the second through hole 12.

[0036] like Figure 1 and Figure 8 As shown, the tail end of the pruning machine blade assembly of this utility model consists of, from top to bottom: a drive gear 5, a first pad 18, a first drive end 7 of the first blade 1, a second pad 19, a second drive end 9 of the second blade 2, and a third pad 20.

[0037] The positioning rod 14 is a screw rod with a smooth rod in the middle. The two positioning rods 14 pass through the third pad 20, the second disc 13, the second pad 19, the first disc 11, and the first pad 18 from the bottom and are finally screwed into the threaded hole of the drive gear 5, thereby positioning them together.

Claims

1. A pruning machine blade set, comprising a first blade (1), a second blade (2), a pressing strip (3), a partition strip (4), a driving gear (5) and a plurality of sets of fixing bolt-nut combinations; the first blade (1) comprises a first cutting blade strip (6) at the front end and a first driving end (7) at the rear end, and the second blade (2) comprises a second cutting blade strip (8) at the front end and a second driving end (9) at the rear end; the first driving end (7) and the second driving end (9) are connected with the driving gear (5) at the tail end, characterized in that: The drive gear (5) has an integrally formed central block (21). The first drive end (7) has a first through hole (10). A first disk (11) is provided in the first through hole (10). The second drive end (9) has a second through hole (12). A second disk (13) is provided in the second through hole (12). The central block (21) has at least one positioning rod (14) that passes through the first disk (11) and the second disk (13). The positioning rod (14) passes through the eccentric position of the first disk (11) and the eccentric position of the second disk (13). The eccentric positions of the first disk (11) and the second disk (13) are symmetrical around the circumference of the central block (21). Rotating the drive gear (5) causes the first blade (1) and the second blade (2) to reciprocate linearly.

2. The pruning machine blade assembly according to claim 1, characterized in that: The central block (21) is provided with two positioning rods (14). The first disk (11) is provided with two third through holes (15) at an eccentric position, and the second disk (13) is provided with two fourth through holes (16) at an eccentric position. Each positioning rod (14) passes through a third through hole (15) and a fourth through hole (16) at corresponding upper and lower positions. The two third through holes (15) and the two fourth through holes (16) are symmetrical about the circumference of the central block (21).

3. The pruning machine blade assembly according to claim 1, characterized in that: The first through hole (10) and the second through hole (12) are elongated holes arranged laterally along the blade assembly.

4. The pruning machine blade assembly according to claim 1 or 2, characterized in that: The center block (21) is located at the center of the drive gear (5) and is fixed on the side by multiple spokes (17). One end of the positioning rod (14) is embedded in the hole of the center block (21).

5. The pruning machine blade assembly according to claim 4, characterized in that: The central block (21) and all the connected spokes (17) are integrally structured with the drive gear (5).

6. The pruning machine blade assembly according to claim 1 or 2, characterized in that: A first pad (18) is provided between the two end faces of the drive gear (5) and the first drive end (7), a second pad (19) is provided between the two end faces of the first drive end (7) and the second drive end (9), and a third pad (20) is provided on the outer bottom surface of the second drive end (9).

7. The pruning machine blade assembly according to claim 6, characterized in that: All the positioning rods (14) on the central block (21) pass through the first pad (18), the second pad (19) and the third pad (20), so that the first pad (18), the second pad (19) and the third pad (20) rotate synchronously with the drive gear (5).

8. The pruning machine blade assembly according to claim 6, characterized in that: The areas of the first pad (18), the second pad (19), and the third pad (20) are greater than the areas of the first through hole (10) and the second through hole (12).

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