Double-acting high branch scissors

Abstract

The utility model discloses a pair of double-acting high branch scissors. Comprising a tool bit assembly, an extension pipe, a transmission sliding block, a driving module and two connecting pieces, the tool bit assembly comprises supports which are arranged in a bilateral symmetry mode, a rotating shaft, a first blade and a second blade are arranged between the two supports, the two ends of the rotating shaft penetrate through the front ends of the supports on the corresponding sides, and the first blade and the second blade are rotationally connected with the rotating shaft; an upper extension block and a lower extension block are arranged on the left side and the right side of the front end of the transmission sliding block respectively, the rear ends of the two connecting pieces are rotationally connected with the upper extension block and the lower extension block respectively, and the front ends of the two connecting pieces are rotationally connected with the rear end of the first blade and the rear end of the second blade respectively. Guide sliding structures capable of sliding along the strip-shaped guide holes in the corresponding sides are symmetrically arranged on the left side and the right side of the transmission sliding block, and the driving module is used for driving the transmission sliding block to slide front and back. The extension pipe shearing device is good in shearing effect and capable of ensuring that the extension pipe cannot be bent during shearing.

Description

Technical Field

[0001] This utility model relates to the field of electric shearing technology, and in particular to a double-action high branch shear. Background Technology

[0002] High-branch shears are common garden pruning tools, mainly used for shaping and pruning the high branches of ornamental trees, flowers, and fruit trees. They are generally used to remove diseased and pest-infested branches at high positions. Existing high-branch shears have one fixed blade, and the opening and closing of the two blades is achieved by rotating the other blade. When pruning thick branches, the extension tube is prone to bending due to the resistance generated by the blade tip, resulting in poor pruning effect. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a double-action high-branch shear, which has a good shearing effect and can ensure that the extension tube will not bend during shearing.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a double-action high-branch pruner, comprising a blade assembly, an extension tube, a transmission slider, a drive module, and two connecting parts. The blade assembly includes symmetrically arranged supports running longitudinally. The supports are located at the front of the extension tube. A rotating shaft, a first blade, and a second blade are located between the two supports. The rotating shaft is horizontally arranged, with both ends passing through the front ends of the corresponding supports. The first and second blades are rotatably connected to the rotating shaft. An upper extension block and a lower extension block are respectively arranged on the left and right sides of the front end of the transmission slider. The rear ends of the two connecting parts are rotatably connected to the upper and lower extension blocks, respectively, and the front ends of the two connecting parts are rotatably connected to the rear ends of the first and second blades, respectively. The supports have strip-shaped guide holes running longitudinally. The transmission slider is located between the two supports. The left and right sides of the transmission slider have symmetrically arranged guide sliding structures that can slide along the corresponding strip-shaped guide holes. The drive module is used to drive the transmission slider to slide back and forth.

[0006] In this solution, the blade assembly is moved to the branch to be pruned, and the drive module drives the transmission slider to move backward. During the backward movement of the transmission slider, the upper and lower extension blocks on the left and right sides of the front end of the transmission slider move backward synchronously. During the backward movement of the upper and lower extension blocks, the corresponding connecting parts are driven to move backward. During the backward movement of the two connecting parts, the first blade and the second blade move closer to each other, thereby cutting off the branch to be pruned. The cutting effect is good and it can be ensured that the extension tube will not bend due to force during cutting.

[0007] Preferably, the upper extension block is located at the top right of the front end of the transmission slider, the lower extension block is located at the bottom left of the front end of the transmission slider, the first blade is located at the left side of the middle of the rotating shaft, the second blade is located at the right side of the middle of the rotating shaft, the right rear end of the first blade is rotatably connected to the left front end of the connector located on the right side, the left rear end of the connector located on the right side is rotatably connected to the bottom right side of the lower extension block, the left bottom of the second blade is rotatably connected to the right front end of the connector located on the left side, and the right rear end of the connector located on the left side is rotatably connected to the top left side of the upper extension block.

[0008] Preferably, both the upper extension block and the lower extension block are vertically arranged.

[0009] Preferably, the guide sliding structure includes guide posts arranged symmetrically at the front and rear. The inner side of the guide post is fixedly connected to the corresponding side of the transmission slider. The guide post extends into the strip-shaped guide hole on the corresponding side and can slide along the corresponding strip-shaped guide hole.

[0010] Preferably, the bracket has a guide groove on its inner side, the guide groove is aligned with the direction of the strip guide hole, the strip guide hole is located on the inner wall of the guide groove, and a sliding connector is fitted on the guide post, the sliding connector can slide along the corresponding guide groove.

[0011] Preferably, the sliding connector includes a guide plate, a connecting ring, and a sliding ring. The outer side of the guide plate is fixedly connected to the connecting ring, and the outer side of the connecting ring is fixedly connected to the sliding ring. The upper and lower ends of the sliding ring are in contact with the strip-shaped guide holes. The sliding ring can slide along the corresponding strip-shaped guide holes. The diameter of the sliding ring is larger than the diameter of the connecting ring, and the guide plate can slide along the corresponding guide groove.

[0012] During the movement of the transmission slider, the transmission slider drives the guide posts on the left and right sides to move. The movement of the guide posts drives the sliding connector to move synchronously. During the movement of the sliding connector, the guide plate slides along the corresponding guide groove. Since the diameter of the sliding ring is larger than the diameter of the connecting ring, the friction force on the sliding connector during movement can be reduced.

[0013] Preferably, the drive module includes a pull rod, a drive motor, a transmission screw, and a transmission nut. The front end of the pull rod is fixedly connected to the transmission slider and the rear end extends into the extension tube. The transmission nut is located at the rear of the extension tube. The extension tube is provided with a connecting guide structure. The front end of the transmission nut is connected to the pull rod through the connecting guide structure. The transmission nut is threadedly connected to the transmission screw. The drive motor is used to drive the transmission screw to rotate.

[0014] Preferably, the connecting guide structure includes a fixed sleeve, a connecting slider, and a connecting sleeve. The fixed sleeve is fixedly connected inside the extension tube, the connecting slider passes through the fixed sleeve, the front end of the connecting slider is fixedly connected to the pull rod, and the rear end of the connecting slider is fixedly connected to the transmission nut through the connecting sleeve. The fixed sleeve has symmetrically arranged strip-shaped connecting pieces at the top and bottom. The connecting slider has a limiting groove corresponding to the position of the strip-shaped connecting piece. A plane bearing that can roll along the limiting groove is provided in the limiting groove, and the plane bearing contacts the strip-shaped connecting piece.

[0015] The drive motor drives the transmission screw to rotate, which in turn drives the transmission nut to move forward. As the transmission nut moves forward, it drives the connecting slider to move forward through the connecting sleeve. As the connecting slider moves, it drives the plane bearings in the upper and lower limit grooves of the connecting slider to move forward, so that the plane bearings move against the corresponding strip connecting pieces. As the connecting slider moves forward, it drives the pull rod to move forward synchronously.

[0016] Preferably, the drive motor is located at the rear end of the extension tube.

[0017] The beneficial effects of this utility model are: the drive module drives the transmission slider to slide back and forth, and during the movement of the transmission slider, it drives the two connecting parts to move synchronously, thereby realizing the opening and closing of the first blade and the second blade, which improves the shearing force of the cutter head assembly and results in a good shearing effect; the sliding connecting parts can reduce the friction force on the guide column when it moves; the guide plate can slide along the corresponding guide groove, thereby ensuring the stability of the transmission slider's back and forth movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model after removing the extension tube;

[0020] Figure 3 yes Figure 2 Schematic diagram of the structure at point A;

[0021] Figure 4 This is a structural schematic diagram of the support and sliding connector on one side in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the planar bearing in this utility model.

[0023] In the diagram: 1. Cutter head assembly, 11. Bracket, 12. Rotating shaft, 13. First blade, 14. Second blade, 15. Strip guide hole, 16. Guide post, 17. Guide groove, 2. Extension tube, 31. Transmission slider, 311. Upper extension block, 312. Lower extension block, 33. Connector, 34. Pull rod, 35. Drive motor, 36. Transmission screw, 37. Transmission nut, 4. Guide plate, 41. Connecting ring, 42. Sliding ring, 5. Fixing sleeve, 51. Connecting slider, 511. Limiting groove, 512. Surface bearing, 52. Connecting sleeve, 53. Strip connecting plate. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] Example: A double-action high-branch pruning shear in this example, such as Figures 1 to 5 As shown, the device includes a cutter head assembly 1, an extension tube 2, a transmission slider 31, a drive module, and two connecting parts 33. The cutter head assembly 1 includes symmetrically arranged brackets 11, which are arranged in a front-back direction and are located in front of the extension tube 2. Between the two brackets 11, there is a rotating shaft 12, a first blade 13, and a second blade 14. The rotating shaft 12 is horizontally arranged, and both ends of the rotating shaft 12 pass through the front end of the corresponding side of the bracket 11. The first blade 13 and the second blade 14 are rotatably connected to the rotating shaft 12. The front end of the transmission slider 31 is provided with an upper extension block 311 and a lower extension block 312 on the left and right sides, respectively. The rear ends of the two connecting parts 33 are rotatably connected to the upper extension block 311 and the lower extension block 312, respectively, and the front ends of the two connecting parts 33 are rotatably connected to the rear ends of the first blade 13 and the second blade 14, respectively. The brackets 11 are provided with strip-shaped guide holes 15, which are arranged in a front-back direction. The transmission slider 31 is located between the two brackets 11. The left and right sides of the transmission slider 31 are symmetrically provided with guide sliding structures that can slide along the corresponding side of the strip-shaped guide hole 15. Both the upper extension block 311 and the lower extension block 312 are set vertically.

[0026] The upper extension block 311 is located at the top right of the front end of the transmission slider 31, the lower extension block 312 is located at the bottom left of the front end of the transmission slider 31, the first blade 13 is located at the left side of the middle of the rotating shaft 12, the second blade 14 is located at the right side of the middle of the rotating shaft 12, the right rear end of the first blade 13 is rotatably connected to the left front end of the connector 33 located on the right side, the left rear end of the connector 33 located on the right side is rotatably connected to the bottom right side of the lower extension block 312, the left bottom of the second blade 14 is rotatably connected to the right front end of the connector 33 located on the left side, and the right rear end of the connector 33 located on the left side is rotatably connected to the top left side of the upper extension block 311.

[0027] The guide sliding structure includes guide posts 16 arranged symmetrically at the front and rear. The inner side of the guide post 16 is fixedly connected to the corresponding side of the transmission slider 31. The guide post 16 extends into the corresponding strip guide hole 15 and can slide along the corresponding strip guide hole 15.

[0028] The bracket 11 has a guide groove 17 on its inner side. The direction of the guide groove 17 is consistent with that of the strip guide hole 15. The strip guide hole 15 is located on the inner wall of the guide groove 17. A sliding connector is sleeved on the guide post 16. The sliding connector can slide along the corresponding guide groove 17.

[0029] The sliding connector includes a guide plate 4, a connecting ring 41, and a sliding ring 42. The outer side of the guide plate 4 is fixedly connected to the inner side of the connecting ring 41, and the outer side of the connecting ring 41 is fixedly connected to the inner side of the sliding ring 42. The upper and lower ends of the sliding ring 42 are in contact with the strip-shaped guide hole 15. The sliding ring 42 can slide along the corresponding strip-shaped guide hole 15. The diameter of the sliding ring 42 is larger than the diameter of the connecting ring 41. The guide plate 4 can slide along the corresponding guide groove 17.

[0030] The drive module includes a pull rod 34, a drive motor 35, a transmission screw 36, and a transmission nut 37. The front end of the pull rod 34 is fixedly connected to the transmission slider 31 and the rear end extends into the extension tube 2. The transmission nut 37 is located at the rear of the extension tube 2. The extension tube 2 is provided with a connecting guide structure. The front end of the transmission nut 37 is connected to the pull rod 34 through the connecting guide structure. The transmission nut 37 is threadedly connected to the transmission screw 36. The drive motor 35 is used to drive the transmission screw 36 to rotate.

[0031] The connecting guide structure includes a fixed sleeve 5, a connecting slider 51, and a connecting sleeve 52. The fixed sleeve 5 is fixedly connected inside the extension tube 2. The connecting slider 51 passes through the fixed sleeve 5. The front end of the connecting slider 51 is fixedly connected to the pull rod 34. The rear end of the connecting slider 51 is fixedly connected to the transmission nut 37 through the connecting sleeve 52. The fixed sleeve 5 has symmetrical strip-shaped connecting pieces 53 arranged inside. The connecting slider 51 has a limiting groove 511 corresponding to the position of the strip-shaped connecting piece 53. The limiting groove 511 has a flat bearing 512 that can roll along the limiting groove 511. The flat bearing 512 contacts the strip-shaped connecting piece 53.

[0032] The drive motor 35 is located at the rear end of the extension tube 2.

[0033] In this design, the planar bearing includes a base plate on which multiple rollers are arranged side-by-side from front to back. The rollers are oriented left to right, and both ends of the rollers contact the strip-shaped connecting piece and the limiting groove, respectively. The cutter head assembly is moved to the branch to be pruned, and the drive motor drives the transmission screw to rotate, causing the transmission screw to move the transmission nut backward. During the backward movement of the transmission nut, the connecting sleeve drives the connecting slider to move backward. During the movement of the connecting slider, the planar bearings in the limiting grooves on the upper and lower sides of the connecting slider move backward, so that the planar bearings move against the corresponding strip-shaped connecting piece. During the backward movement of the connecting slider, the pull rod moves backward synchronously, which in turn drives the transmission slider to move backward. During the backward movement of the transmission slider, the upper and lower extension blocks on the left and right sides of the front end of the transmission slider move backward synchronously. During the backward movement of the upper and lower extension blocks, the corresponding connecting pieces move backward. During the backward movement of the two connecting pieces, the first blade and the second blade move closer to each other, thereby cutting off the branch to be pruned.

[0034] During the movement of the transmission slider, the transmission slider drives the guide posts on the left and right sides to move. The movement of the guide posts drives the sliding connector to move synchronously. During the movement of the sliding connector, the guide plate slides along the corresponding guide groove. Since the diameter of the sliding ring is larger than the diameter of the connecting ring, the friction force on the sliding connector during movement can be reduced.

Claims

1. A double-action high-branch pruning shear, characterized in that: The device includes a cutter head assembly (1), an extension tube (2), a transmission slider (31), a drive module, and two connectors (33). The cutter head assembly (1) includes symmetrically arranged brackets (11) arranged in a front-back direction. The brackets (11) are located on the front side of the extension tube (2). Between the two brackets (11) are a rotating shaft (12), a first blade (13), and a second blade (14). The rotating shaft (12) is horizontally arranged, and both ends of the rotating shaft (12) pass through the front end of the corresponding bracket (11). The first blade (13) and the second blade (14) are rotatably connected to the rotating shaft (12). The transmission slider (31) is connected to the left and right sides of its front end. The bracket (11) is provided with an upper extension block (311) and a lower extension block (312). The rear ends of the two connecting parts (33) are rotatably connected to the upper extension block (311) and the lower extension block (312) respectively. The front ends of the two connecting parts (33) are rotatably connected to the rear ends of the first blade (13) and the second blade (14) respectively. The bracket (11) is provided with a strip-shaped guide hole (15). The strip-shaped guide hole (15) is arranged in a front-back direction. The transmission slider (31) is located between the two brackets (11). The transmission slider (31) is symmetrically provided with a guide sliding structure on the left and right sides, which can slide along the corresponding strip-shaped guide hole (15). The driving module is used to drive the transmission slider (31) to slide back and forth.

2. The double-action high-branch pruner according to claim 1, characterized in that: The upper extension block (311) is located at the top right of the front end of the transmission slider (31), the lower extension block (312) is located at the bottom left of the front end of the transmission slider (31), the first blade (13) is located on the left side of the middle of the rotating shaft (12), the second blade (14) is located on the right side of the middle of the rotating shaft (12), the right rear end of the first blade (13) is rotatably connected to the left front end of the connector (33) located on the right side, the left rear end of the connector (33) located on the right side is rotatably connected to the bottom right side of the lower extension block (312), the left bottom of the second blade (14) is rotatably connected to the right front end of the connector (33) located on the left side, and the right rear end of the connector (33) located on the left side is rotatably connected to the top left side of the upper extension block (311).

3. The double-action high-branch pruner according to claim 1, characterized in that: Both the upper extension block (311) and the lower extension block (312) are vertically arranged.

4. The double-action high-branch pruner according to claim 1, characterized in that: The guide sliding structure includes guide posts (16) arranged symmetrically at the front and rear. The inner side of the guide post (16) is fixedly connected to the corresponding side of the transmission slider (31). The guide post (16) extends into the strip guide hole (15) on the corresponding side and can slide along the corresponding strip guide hole (15).

5. The double-action high-branch pruning shears according to claim 4, characterized in that: The bracket (11) has a guide groove (17) on its inner side. The direction of the guide groove (17) is consistent with the direction of the strip guide hole (15). The strip guide hole (15) is located on the inner wall of the guide groove (17). A sliding connector is sleeved on the guide post (16). The sliding connector can slide along the corresponding guide groove (17).

6. The double-action high-branch pruner according to claim 5, characterized in that: The sliding connector includes a guide plate (4), a connecting ring (41), and a sliding ring (42). The outer side of the guide plate (4) is fixedly connected to the inner side of the connecting ring (41), and the outer side of the connecting ring (41) is fixedly connected to the inner side of the sliding ring (42). The upper and lower ends of the sliding ring (42) are in contact with the strip-shaped guide hole (15). The sliding ring (42) can slide along the corresponding strip-shaped guide hole (15). The diameter of the sliding ring (42) is larger than the diameter of the connecting ring (41). The guide plate (4) can slide along the corresponding guide groove (17).

7. The double-action high-branch pruning shears according to claim 1, 2, 3, 4, 5, or 6, characterized in that: The drive module includes a pull rod (34), a drive motor (35), a transmission screw (36), and a transmission nut (37). The front end of the pull rod (34) is fixedly connected to the transmission slider (31), and the rear end extends into the extension tube (2). The transmission nut (37) is located in the rear part of the extension tube (2). The extension tube (2) is provided with a connecting guide structure. The front end of the transmission nut (37) is connected to the pull rod (34) through the connecting guide structure. The transmission nut (37) is threadedly connected to the transmission screw (36). The drive motor (35) is used to drive the transmission screw (36) to rotate.

8. The double-action high-branch pruning shears according to claim 7, characterized in that: The connecting guide structure includes a fixed sleeve (5), a connecting slider (51), and a connecting sleeve (52). The fixed sleeve (5) is fixedly connected inside the extension tube (2). The connecting slider (51) passes through the fixed sleeve (5). The front end of the connecting slider (51) is fixedly connected to the pull rod (34). The rear end of the connecting slider (51) is fixedly connected to the transmission nut (37) through the connecting sleeve (52). The fixed sleeve (5) has symmetrical strip connecting pieces (53) arranged inside. The connecting slider (51) has a limiting groove (511) corresponding to the position of the strip connecting piece (53). The limiting groove (511) has a flat bearing (512) that can roll along the limiting groove (511). The flat bearing (512) is in contact with the strip connecting piece (53).

9. The double-action high-branch pruning shears according to claim 7, characterized in that: The drive motor (35) is located at the rear end of the extension tube (2).

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