Shrub plant pruning device applied to landscaping management

Abstract

The invention relates to the technical field of plant pruning, and discloses a shrub plant pruning device applied to landscaping management, the shrub plant pruning device comprises two groups of moving wheels, the tops of the two groups of moving wheels are fixedly connected with supporting legs, the tops of the two groups of supporting legs are fixedly connected with fixing plates, and the tops of the fixing plates are provided with motors; the outer wall of the fixed plate is fixedly connected with a blocking mechanism, the blocking mechanism comprises a second rotating plate and a first rotating plate, a sliding block is arranged on the inner wall of the second rotating plate, the sliding block is slidably connected with the inner wall of the second rotating plate, and the first top plate is rotatably connected with the second rotating plate through a first rotating shaft. By arranging the blocking mechanism, when the shrubs are trimmed, the blocking mechanism can effectively prevent branches and leaves from flying about, it is ensured that the trimmed branches and leaves fall to the bottoms of the shrubs in a concentrated mode, the problems that the branches and leaves are scattered and difficult to clean in traditional trimming operation are solved, and the tidiness of garden trimming work is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of plant pruning, in particular to a shrub plant pruning device used in gardening and greening management. Background Art

[0002] Shrubs are relatively short, clumping woody plants without a distinct trunk, generally under 6 meters tall. Most are broad-leaved plants, though some coniferous plants, such as junipers, are considered shrubs. Shrubs can be categorized as flowering, fruiting, or branching plants, with roses, azaleas, and peonies being common examples. They are highly adaptable, light-loving, and tolerant of cold, drought, and infertility. They contribute to soil and water conservation within ecosystems and provide habitats for animals. They are also frequently used in landscape design and possess both high ornamental and economic value.

[0003] The patent application with application number CN202110550439.1 discloses a shrub plant pruning device used in landscaping management, including a rectangular base, a linkage lifting mechanism is provided on the upper surface of the rectangular base, a hidden cross-cutting mechanism is provided at one end of the linkage lifting mechanism, and an adjustable pruning mechanism is provided at the lower end of the hidden cross-cutting mechanism.

[0004] In current garden shrub pruning operations, branches and leaves fly everywhere during the pruning process. This phenomenon requires the road surface to be cleaned after the pruning work is completed, which increases the burden of subsequent cleanup work. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a shrub plant pruning device for use in landscaping management to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shrub plant pruning device for landscaping management, comprising two sets of moving wheels, the tops of the two sets of moving wheels are fixedly connected to support legs, the tops of the two sets of support legs are fixedly connected to fixing plates, the tops of the fixing plates are equipped with motors, and the outer walls of the fixing plates are fixedly connected to blocking mechanisms;

[0007] The blocking mechanism comprises:

[0008] a second rotating plate, wherein a sliding block is provided on an inner wall of the second rotating plate and the sliding block is slidably connected to the inner wall of the second rotating plate;

[0009] a first rotating plate, the first rotating plate being rotatably connected to the second rotating plate via a first rotating shaft, the top of the sliding block being fixedly connected to the bottom of the first rotating plate, a first pull rope being fixedly connected to a side of the sliding block away from the second rotating plate, and the first pull rope passing through the second rotating plate;

[0010] The baffle is provided with a sliding rod at the bottom of the baffle, the upper and lower ends of the sliding rod are fixedly connected to the inner wall of the baffle, the outer wall of the sliding rod is slidably connected to the inner wall of the first rotating plate, and the first rotating plate is used to receive scattered branches and leaves.

[0011] According to the above technical solution, a second spring is fixedly connected to the bottom of the first rotating plate, the inner wall of the first pull rope away from the sliding block is slidably connected to the outer wall of the sliding rod, the top of the first pull rope is fixedly connected to the bottom of the second spring, the bottom of the first pull rope is fixedly connected to the first spring, the bottom of the first spring is fixedly connected to the bottom of the inner wall of the baffle, the top of the second spring is fixedly connected to the top of the inner wall of the baffle, the top of the first rotating plate is in contact with the bottom of the baffle, and the blocking mechanism is set to two groups and both are symmetrically arranged around the center of the fixed plate, and the first pull rope is used to pull the sliding block to move.

[0012] According to the above technical solution, it also includes a reset mechanism, which includes a bonding plate, the side of the bonding plate close to the second rotating plate is fixedly connected to the outer wall of the second rotating plate, the inner wall of the bonding plate is provided with a movable plate, the bottom of the movable plate is slidably connected to the bottom of the inner wall of the bonding plate, and the left side of the movable plate is fixedly connected to a curved plate, which is used to pull the curved plate to move a distance.

[0013] According to the above technical solution, a third spring is fixedly connected to the side of the curved plate close to the movable plate, and a side of the third spring away from the curved plate is fixedly connected to the outer wall of the movable plate. A shaking ball is fixedly connected to the bottom of the curved plate, and an elastic rod is fixedly connected to the side of the movable plate away from the curved plate. The shaking ball is used to slow down the descending speed of the movable plate.

[0014] According to the above technical solution, the side of the elastic rod away from the movable plate is fixedly connected to the right side of the inner wall of the bonding plate, the top of the movable plate is fixedly connected with a connecting rod, and the side of the connecting rod close to the sliding block is fixedly connected to the sliding block. The reset mechanism is set into two groups and both are symmetrically arranged around the center of the fixed plate. The connecting rod is used to drive the movable plate to move synchronously.

[0015] According to the above technical solution, it also includes an adjustment mechanism, which includes two groups of positioning blocks. The two groups of positioning blocks are fixedly connected to a hanging plate on one side away from each other. A rotating plate is provided on the top of the hanging plate. The left and right sides of the rotating plate are fixedly connected to an insertion rod. The rotating plate is used to fix the position of the insertion rod.

[0016] According to the above technical solution, the inner walls of the two groups of rotating plates are fixedly connected with second pull ropes, the sides of the two groups of second pull ropes away from the insertion rod are fixedly connected with clamps, and the sides of the two groups of clamps close to the rotating plate are slidingly connected to the inner walls of the rotating plate, and the insertion rod is used to fix the position of the second pull ropes.

[0017] According to the above technical solution, a circular plate is fixedly connected to the bottom of the hanging plate, and pull rods are in contact on both the left and right sides of the circular plate. The bottoms of the two groups of pull rods are fixedly connected to arc plates, and the bottoms of the two groups of arc plates are fixedly connected to blades. The output end of the motor is rotatably connected to the rotating plate and the circular plate through a second rotating shaft, and the pull rod is used to adjust the height of the blade.

[0018] Compared with the prior art, the present invention provides a shrub plant pruning device for landscaping management, which has the following beneficial effects:

[0019] 1. The present invention provides a blocking mechanism, which can effectively prevent branches and leaves from flying around when pruning shrubs, ensuring that the pruned branches and leaves fall to the bottom of the shrubs. This improves the problem of scattered branches and leaves and difficulty in cleaning in traditional pruning operations, and also improves the neatness of garden pruning work.

[0020] 2. The present invention is provided with a reset mechanism. When the blocking mechanism completes the placement of the branches and leaves, the reset mechanism will play a role, prompting the first rotating plate that completes the tilting action to reset. In this way, it can ensure that the device is not affected by the previous operation when performing the next work, thereby ensuring the continuity and efficiency of the entire pruning operation process.

[0021] 3. The present invention is provided with an adjustment mechanism. When facing shrubs of different heights, the blade can be adjusted through the mechanism, which can ensure that the pruning device is suitable for various scenarios. Moreover, after the blade adjustment is completed, the adjustment mechanism can also ensure the stability of the blade, thereby improving the reliability and efficiency of the pruning operation.

[0022] 4. The present invention can quickly fix the position of the clamp by providing an insertion rod, so that the operation will not be too cumbersome when adjusting the blade position; when releasing the clamp, the insertion rod can also be operated quickly, ensuring that the work efficiency can be effectively improved when performing shrub pruning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the baffle of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the blocking mechanism of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the second rotating plate of the present invention;

[0028] Figure 6It is a structural schematic diagram of the reset mechanism of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the adjustment mechanism of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the rotating plate of the present invention.

[0031] In the figure: 1. Moving wheel; 2. Support leg; 3. Fixed plate; 4. Motor; 5. Blocking mechanism; 501. Baffle; 502. First rotating plate; 503. Sliding rod; 504. Second rotating plate; 505. Sliding block; 506. First pull rope; 507. First spring; 508. Second spring; 6. Resetting mechanism; 601. Fitting plate; 602. Elastic rod; 603. Rocking ball; 604. Third spring; 605. Moving plate; 606. Connecting rod; 607. Curved plate; 7. Adjusting mechanism; 701. Positioning block; 702. Hanging plate; 703. Pull rod; 704. Circular plate; 705. Arc plate; 706. Blade; 707. Rotating plate; 708. Second pull rope; 709. Clamp; 710. Insert rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0034] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Example 1: See Figure 1-Figure 5The present invention provides a technical solution: a shrub plant pruning device used for landscaping management, comprising two sets of moving wheels 1, the tops of the two sets of moving wheels 1 are fixedly connected to support legs 2, the tops of the two sets of support legs 2 are fixedly connected to fixing plates 3, the tops of the fixing plates 3 are equipped with motors 4, and the outer walls of the fixing plates 3 are fixedly connected to blocking mechanisms 5;

[0036] The blocking mechanism 5 includes a second rotating plate 504, an inner wall of the second rotating plate 504 is provided with a sliding block 505, the sliding block 505 is slidably connected to the inner wall of the second rotating plate 504, a first rotating plate 502, the first rotating plate 502 is rotatably connected to the second rotating plate 504 through a first rotating shaft, the top of the sliding block 505 is fixedly connected to the bottom of the first rotating plate 502, and the side of the sliding block 505 away from the second rotating plate 504 is fixedly connected to the first pull rope 506. By setting the first pull rope 506, the sliding block 505 can be pulled to move, ensuring that the first rotating plate 502 loses its supporting force and can be slowly rotated, so that the branches and leaves on the first rotating plate 502 will not be scattered around, the first pull rope 506 runs through the second rotating plate 504, and a sliding rod 503 is provided at the bottom of the baffle 501, and the upper and lower ends of the sliding rod 503 are fixedly connected to the inner wall of the baffle 501, and the outer wall of the sliding rod 503 is fixed to the first rotating plate The top of the first pull rope 506 is fixedly connected to the bottom of the second spring 508, and the bottom of the first pull rope 506 is fixedly connected to the first spring 507. The bottom of the first spring 507 is fixedly connected to the bottom of the inner wall of the baffle 501, and the top of the second spring 508 is fixedly connected to the top of the inner wall of the baffle 501. The top of the first rotating plate 502 contacts the bottom of the baffle 501, and the blocking mechanism 5 is set in two groups and both are symmetrically arranged around the middle center of the fixed plate 3. The first pull rope 506 is used to pull the sliding block 505 to move.

[0037] The working principle of this embodiment is as follows: Conventional shrub pruning lacks a barrier around the shrub, causing the pruned branches and leaves to scatter and affect the surrounding environment. Therefore, this mechanism is needed to address this issue. When a worker prunes a shrub, the branches and leaves that fly out will contact the baffle 501. After being blocked by the baffle 501, the branches and leaves fall downward, landing on top of the first rotating plate 502 at the bottom of the baffle 501 and resting there. After pruning the shrub, the worker pushes the first rotating plate 502 downward along the sliding rod 503. The downward movement of the first rotating plate 502 drives the second rotating plate 504 at the bottom downward, simultaneously driving the sliding block 505 downward. The downward movement of the first rotating plate 502 compresses the second spring 508. After sliding a certain distance, the sliding block 505 contacts the first pull cord 506 and presses it downward. The first pull cord 506, pushed downward by the first rotating plate 502, compresses the first spring 507 at the bottom, and simultaneously pulls the sliding block 505 to slide within the second rotating plate 504. At this time, the first rotating plate 502 loses the support force of the sliding block 505 and tilts downward, and the branches and leaves on the first rotating plate 502 slide down and slide along the first rotating plate 502 to the bottom of the bush.

[0038] Example 2: Please refer to Figure 6On the basis of embodiment 1, the present invention provides a technical solution: it also includes a reset mechanism 6, the reset mechanism 6 includes a bonding plate 601, the bonding plate 601 is fixedly connected to the outer wall of the second rotating plate 504 on one side close to the second rotating plate 504, and a movable plate 605 is provided on the inner wall of the bonding plate 601, and the bottom of the movable plate 605 is slidably connected to the bottom of the inner wall of the bonding plate 601, and a curved plate 607 is fixedly connected to the left side of the movable plate 605. The movable plate 605 is used to pull the curved plate 607 to move a distance, and the curved plate 607 is fixedly connected to the third spring 604 on the side close to the movable plate 605. By setting the third spring 604, the shaking ball 603 can be pushed to shake significantly, thereby increasing the swinging force of the shaking ball 603, and the third spring 604 can also ensure that the curved plate 607 can return to its initial position after the work is completed, and the side of the third spring 604 away from the curved plate 607 is connected to the outer wall of the movable plate 605 The wall is fixedly connected, and a shaking ball 603 is fixedly connected to the bottom of the curved plate 607. By setting the shaking ball 603, it can be ensured that when the first rotating plate 502 is tilted at an angle, the swinging force of the shaking ball 603 can be used to slow down the tilting speed of the first rotating plate 502, thereby avoiding the first rotating plate 502 from tilting too fast and causing branches and leaves to fall. The side of the moving plate 605 away from the curved plate 607 is fixedly connected with an elastic rod 602. The shaking ball 603 is used to slow down the descending speed of the moving plate 605. The side of the elastic rod 602 away from the moving plate 605 is fixedly connected to the right side of the inner wall of the fitting plate 601. The top of the moving plate 605 is fixedly connected with a connecting rod 606. The side of the connecting rod 606 close to the sliding block 505 is fixedly connected to the sliding block 505. The reset mechanism 6 is set to two groups and both are symmetrically arranged around the center of the middle part of the fixed plate 3. The connecting rod 606 is used to drive the moving plate 605 to move synchronously.

[0039] The working principle of this embodiment is as follows: when the blocking mechanism 5 cannot be reset in time after placing the branches and leaves at the bottom of the shrub, the position needs to be adjusted during the next pruning. This mechanism can solve this problem. When the sliding block 505 slides in the second rotating plate 504, it will drive the connecting rod 606 to move synchronously. When the connecting rod 606 moves, it drives the movable plate 605 to move synchronously on the inner wall of the fitting plate 601. The movement of the movable plate 605 drives the curved plate 607 on the left to move. The curved plate 607 has a certain elasticity. It will shake when it moves. When it shakes, it will squeeze the third spring 604 to contract, and at the same time drive the shaking ball 603 to shake. The third spring 604 will rebound after being squeezed, and when it rebounds, it will push the curved plate 607 to slide significantly. When the movable plate 605 moves, it will push the elastic plate to contract. When the first rotating plate 502 completes the tilting, the movable plate 605 loses its driving force. At this time, the elastic rod 602 begins to rebound, pushing the movable plate 605 to reset.

[0040] Example 3: Please refer to Figure 7-Figure 8The second pull rope 708 is fixedly connected to the inner wall of the two sets of rotating plates 707. By operating the second pull rope 708, the working state of the clamp 709 can be switched to adjust the position of the pull rod 703. When the lever 710 is in the fixed state of position 3, the second pull rope 708 needs to be pulled to quickly release the lock, without the need for tedious disassembly steps, which greatly reduces the operating workload. The two sets of second pull ropes 708 are fixedly connected to the side of the clamp 709 away from the insertion rod 710, and the two sets of clamps 709 are slidingly connected to the inner wall of the rotating plate 707 on the side close to the rotating plate 707. The insertion rod 710 is used to fix the position of the second pull rope 708. The bottom of the hanging plate 702 is fixedly connected to the circular plate 704, and the left and right sides of the circular plate 704 are in contact with the pull rod 703. The bottoms of the two sets of pull rods 703 are fixedly connected to the arc plate 705, and the bottoms of the two sets of arc plates 705 are fixedly connected to the blade 706. The output end of the motor 4 is rotatably connected to the rotating plate 707 and the circular plate 704 through the second rotating shaft. The pull rod 703 is used to adjust the height of the blade 706.

[0041] The working principle of this embodiment is as follows: When a worker needs to trim shrubs of varying heights, they may encounter shrubs of varying heights, requiring adjustment of the blade 706, which in turn requires this mechanism to handle the situation. To adjust the height of the pull rod 703, the worker begins to rotate the insertion rod 710 upward. When the insertion rod 710 moves out of the second pull cord 708, the worker moves the clamp 709, gradually moving it away from the rotating plate 707. The movement of the clamp 709 drives the second pull cord 708 to move. Once the movement is complete, the appropriate clamp 709 opens to both sides and moves out from the interior of the pull rod 703. At this point, the worker adjusts the pull rod 703 upward or downward. This movement of the pull rod 703 drives the curved plate 705 to move synchronously, which in turn drives the blade 706 to move. The motor 4 is then activated, driving the circular plate 704 to rotate. Once the circular plate 704 rotates, it drives the rotating plate 707 to rotate synchronously with the pull rod 703.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A shrub plant pruning device for landscaping management, comprising two sets of moving wheels (1), the tops of the two sets of moving wheels (1) are fixedly connected to support legs (2), the tops of the two sets of support legs (2) are fixedly connected to fixing plates (3), and the tops of the fixing plates (3) are equipped with motors (4), characterized in that: The outer wall of the fixed plate (3) is fixedly connected with a blocking mechanism (5); The blocking mechanism (5) comprises: A second rotating plate (504), wherein a sliding block (505) is provided on the inner wall of the second rotating plate (504), and the sliding block (505) is slidably connected to the inner wall of the second rotating plate (504); A first rotating plate (502), wherein the first rotating plate (502) is rotatably connected to the second rotating plate (504) via a first rotating shaft, and the top of the sliding block (505) is fixedly connected to the bottom of the first rotating plate (502); A baffle (501) is provided with a sliding rod (503) at the bottom of the baffle (501), the upper and lower ends of the sliding rod (503) are fixedly connected to the inner wall of the baffle (501), and the outer wall of the sliding rod (503) is slidably connected to the inner wall of the first rotating plate (502), and the first rotating plate (502) is used to receive scattered branches and leaves.

2. The shrub plant pruning device for landscaping management according to claim 1, characterized in that: The side of the sliding block (505) away from the second rotating plate (504) is fixedly connected to a first pull rope (506), the first pull rope (506) passes through the second rotating plate (504), the bottom of the first rotating plate (502) is fixedly connected to a second spring (508), the inner wall of the side of the first pull rope (506) away from the sliding block (505) is slidably connected to the outer wall of the sliding rod (503), the top of the first pull rope (506) is fixedly connected to the bottom of the second spring (508), and the first The bottom of the pull rope (506) is fixedly connected to a first spring (507), the bottom of the first spring (507) is fixedly connected to the bottom of the inner wall of the baffle (501), the top of the second spring (508) is fixedly connected to the top of the inner wall of the baffle (501), the top of the first rotating plate (502) is in contact with the bottom of the baffle (501), the blocking mechanism (5) is provided in two groups and both are symmetrically arranged around the center of the fixed plate (3), and the first pull rope (506) is used to pull the sliding block (505) to move.

3. The shrub plant pruning device for landscaping management according to claim 1, characterized in that: The invention also includes a reset mechanism (6), wherein the reset mechanism (6) includes a bonding plate (601), wherein the bonding plate (601) is fixedly connected to the outer wall of the second rotating plate (504) on one side thereof close to the second rotating plate (504), and a movable plate (605) is provided on the inner wall of the bonding plate (601), wherein the bottom of the movable plate (605) is slidably connected to the bottom of the inner wall of the bonding plate (601), and a curved plate (607) is fixedly connected to the left side of the movable plate (605), and the movable plate (605) is used to pull the curved plate (607) to move a distance.

4. The shrub plant pruning device for landscaping management according to claim 3, characterized in that: A third spring (604) is fixedly connected to the side of the curved plate (607) close to the movable plate (605), and a side of the third spring (604) away from the curved plate (607) is fixedly connected to the outer wall of the movable plate (605). A shaking ball (603) is fixedly connected to the bottom of the curved plate (607), and an elastic rod (602) is fixedly connected to the side of the movable plate (605) away from the curved plate (607). The shaking ball (603) is used to slow down the descending speed of the movable plate (605).

5. The shrub plant pruning device for landscaping management according to claim 4, characterized in that: The side of the elastic rod (602) away from the movable plate (605) is fixedly connected to the right side of the inner wall of the laminating plate (601); the top of the movable plate (605) is fixedly connected to a connecting rod (606); the side of the connecting rod (606) close to the sliding block (505) is fixedly connected to the sliding block (505); the reset mechanism (6) is provided in two groups and both are symmetrically arranged around the center of the fixed plate (3); the connecting rod (606) is used to drive the movable plate (605) to move synchronously.

6. The shrub plant pruning device for landscaping management according to claim 5, characterized in that: The invention also includes an adjustment mechanism (7), wherein the adjustment mechanism (7) includes two groups of positioning blocks (701), and the two groups of positioning blocks (701) are fixedly connected to a hanging plate (702) on the side away from each other. A rotating plate (707) is provided on the top of the hanging plate (702), and the left and right sides of the rotating plate (707) are fixedly connected to an insertion rod (710). The rotating plate (707) is used to fix the position of the insertion rod (710).

7. The shrub plant pruning device for landscaping management according to claim 6, characterized in that: The inner walls of the two groups of rotating plates (707) are fixedly connected with a second pull rope (708), and the sides of the two groups of second pull ropes (708) away from the insertion rod (710) are fixedly connected with a clamp (709), and the sides of the two groups of clamps (709) close to the rotating plate (707) are slidably connected to the inner wall of the rotating plate (707), and the insertion rod (710) is used to fix the position of the second pull rope (708).

8. The shrub plant pruning device for landscaping management according to claim 7, characterized in that: The bottom of the hanging plate (702) is fixedly connected to a circular plate (704), and the left and right sides of the circular plate (704) are in contact with pull rods (703). The bottoms of the two groups of pull rods (703) are fixedly connected to arc plates (705), and the bottoms of the two groups of arc plates (705) are fixedly connected to blades (706). The output end of the motor (4) is rotatably connected to the rotating plate (707) and the circular plate (704) through a second rotating shaft. The pull rod (703) is used to adjust the height of the blade (706).

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