Pruning device for dwarf and close-planting pear trees

Abstract

The utility model relates to the field of tree pruning devices, in particular to a dwarf close planting pear tree pruning device which comprises a power rod and a supporting cylinder, a shearing blade buffering mechanism is arranged between a fixing frame and the supporting cylinder, and the buffering mechanism comprises a moving block connected to the inner wall of the supporting cylinder in a sliding mode. Two triggering blocks are fixedly connected to the top end of the moving block, and two cylinder bodies are fixedly connected to the inner top wall of the supporting barrel; when a moving rod is arranged to drive a shearing blade to cut thick branches, the moving rod drives a trigger block on a moving block to compress gas in a cylinder body through a piston, impact of the blade on a fixing frame is reduced, device damage is avoided, and therefore the purpose of prolonging the service life of the device is achieved; and a rotating sleeve is arranged on the cylinder body to be matched with rotating connection of a positioning block and a moving rod, so that the device can be rotated and adjusted to a position most suitable for self power generation, and the use convenience of workers is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tree pruning device field, especially a kind of pruning device for dwarfing and densely planting pear tree. BACKGROUND

[0002] Dwarfing and densely planting pear tree is a kind of pear tree cultivation mode for improving unit area yield through dwarfing technology and densely planting cultivation method. By breeding dwarfing varieties or using dwarfing stock, the height of pear tree is lower, which is convenient for management and harvesting. Dwarfing and densely planting pear tree needs to be pruned during planting period, and needs to use a pruning device.

[0003] Through search, Chinese patent "a fruit tree branch pruning device" authorized announcement number "CN217183969U", by being provided with shearing mechanism, so that when the device is placed on fruit tree branch, it can better cut the fruit tree branch through shearing mechanism, so that the device can better guarantee the stability and shearing effect of the device when cutting the relatively thick branch.

[0004] The above-mentioned application can maintain the stability of the device when pruning the relatively thick fruit tree branches, but when pruning the relatively thick branches, the worker needs to use more force to prune, so that the worker's force cannot be controlled at the moment when the branch is cut off. The impact force of the cutting blade on the inverted "L" shaped frame can cause damage to the device, reducing the service life of the device.

[0005] Therefore, a pruning device for dwarfing and densely planting pear tree is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims to solve the above problems and provides a pruning device for dwarfing and densely planting pear tree, which improves the problem of easy impact between cutting blade and device, causing damage to the device.

[0007] The utility model realizes the above-mentioned purpose through the following technical scheme, a pruning device for dwarfing and densely planting pear tree, comprising: power rod and support cylinder, the surface of the support cylinder is fixedly connected with fixing frame, the surface of the power rod is threadedly connected with extension rod, shearing blade is arranged between the fixing frame and the support cylinder.

[0008] Buffer mechanism, the buffer mechanism includes moving block slidingly connected to the inner wall of support cylinder, the top end of the moving block is fixedly connected with two trigger blocks, the inner top wall of the support cylinder is fixedly connected with two cylinder bodies, the inner wall of the cylinder body is slidingly connected with piston, the inner top wall of the cylinder body and the piston are connected with spring.

[0009] Preferably, the buffer mechanism comprises a moving rod, the surface of the moving rod is connected to the upper and lower ends of the supporting cylinder in penetration and sliding, and the surface of the moving rod is fixedly connected to the moving block.

[0010] Preferably, the surface of the power rod is hingedly connected with a connecting rod, the distal end of the two connecting rods is hingedly connected with a positioning block, the surface of the moving rod is fixedly connected with a second limiting ring, and the second limiting ring is rotationally connected to the positioning block, so that the device can rotate.

[0011] Preferably, the bottom end of the cylinder body is provided with a circular opening, and the circular opening is vertically aligned with the trigger block, so that the trigger block cooperates with the cylinder body to complete buffering.

[0012] Preferably, the surface of the supporting cylinder is fixedly connected with two first limiting rings, and the top end of the two power rods is hingedly connected with a rotating sleeve, so that the device can rotate.

[0013] Preferably, the inner wall of the rotating sleeve is provided with two annular grooves, and the first limiting ring is rotationally connected in the annular groove, so that the device can rotate while moving the moving rod up and down.

[0014] Preferably, the surface of the fixed frame is provided with a knife groove, and the cross section of the fixed frame is inverted "L" shaped, so that the power intensity of the device is increased, the branches can be limited, and the shearing is facilitated.

[0015] The beneficial effects of the utility model are:

[0016] When the moving rod drives the shearing blade to cut the thicker branches, the trigger block on the moving block drives the gas in the cylinder body to be compressed through the piston at the moment of cutting the branches, the pressure in the cylinder body is increased, the moving rod is subjected to a force in the opposite direction through the piston, the impact of the blade on the fixed frame is reduced, the device is prevented from being damaged, and the service life of the device is prolonged.

[0017] The rotating sleeve is arranged on the cylinder body, the positioning block is rotationally connected with the moving rod, and when the thicker branches are sheared, the device can be rotated and adjusted to the most suitable position for the force of the worker, and the use convenience of the worker is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a sectional view of the cylinder body and the positioning block of the utility model;

[0020] Figure 3 It is an explosion view of the utility model;

[0021] Figure 4 for Figure 3 A magnified view of A in the middle.

[0022] In the diagram: 100, power rod; 110, extension rod; 120, connecting rod; 200, fixing frame; 210, blade groove; 300, shearing blade; 400, buffer mechanism; 410, cylinder; 411, piston; 412, spring; 420, moving block; 421, trigger block; 430, moving rod; 440, positioning block; 441, second limiting ring; 442, first limiting ring; 450, rotating sleeve; 451, annular groove; 500, support cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In practical implementation: such as Figures 1-4 As shown, a pruning device for dwarfing densely planted pear trees includes: a power rod 100 and a support cylinder 500. A fixing frame 200 is fixedly connected to the surface of the support cylinder 500, and an extension rod 110 is threadedly connected to the surface of the power rod 100. A shearing blade 300 is provided between the fixing frame 200 and the support cylinder 500.

[0025] A buffer mechanism 400 includes a movable block 420 slidably connected to the inner wall of a support cylinder 500. Two trigger blocks 421 are fixedly connected to the top of the movable block 420. Two cylinders 410 are fixedly connected to the inner top wall of the support cylinder 500. A piston 411 is slidably connected to the inner wall of the cylinder 410. A spring 412 is connected between the inner top wall of the cylinder 410 and the piston 411.

[0026] like Figure 1 , Figure 3 and Figure 4As shown, the buffer mechanism 400 includes a movable rod 430, the surface of which is slidably connected to the upper and lower ends of the support cylinder 500, and the surface of which is fixedly connected to the movable block 420. The surface of the power rod 100 is hinged with a connecting rod 120, and the ends of the two connecting rods 120 away from the power rod 100 are hinged with a positioning block 440. The surface of the movable rod 430 is fixedly connected with a second limiting ring 441, which is rotatably connected to the positioning block 440. The bottom end of the cylinder 410 is provided with a circular opening, which is aligned vertically with the trigger block 421. The surface of the fixing frame 200 is provided with a knife groove 210, and the cross-section of the fixing frame 200 is an inverted "L" shape.

[0027] In this embodiment, when the two power rods 100 are squeezed, the two power rods 100 rotate inward, causing the connecting rod 120 to rotate and move upward. During the upward movement of the connecting rod 120, it will drive the moving block 420 and the trigger block 421 on the moving block 420 to move. At the moment when the blade cuts the branch, that is, when the bottom end of the blade is flush with the bottom end of the sheath, the trigger block 421 just contacts the piston 411. At this time, the branch is completely cut off. The moving block 420 drives the trigger block 421 to move rapidly and push the piston 411. During the upward movement of the piston 411, it will compress the gas in the cylinder 410 to the upper space. The volume of the gas is compressed, which will increase the pressure in the upper space, thus hindering the movement of the piston 411 and slowing down the movement speed of the piston 411. At the same time, it will drive the moving rod 430 and the shearing blade 300 at the top of the moving rod 430 to move slower, thereby achieving a buffer for the moving rod 430.

[0028] When encountering thicker branches or branches that are difficult to exert force on, the power rod 100 needs to be rotated. At this time, the branch is first fixed between the fixing frame 200 by the shearing blade 300, and then rotated. During the rotation, the power rod 100 rotates on the surface of the cylinder 410 with the rotating sleeve 450, and rotates through the annular groove 451 and the first limiting ring 442. At the same time, the connecting rod 120 will rotate with the power rod 100, and at the same time drive the groove inside the positioning block 440 to rotate along the second limiting ring 441. During this process, the fixing frame 200 is fixed to the surface of the cylinder 410, so it will not rotate with the rotating sleeve 450.

[0029] like Figure 1 , Figure 2 and Figure 3As shown, the fixing frame 200 is fixedly connected to the surface of the cylinder 410. The surface of the fixing frame 200 has a blade groove 210. The two power rods 100 are arranged in a "V" shape, and the cross-section of the fixing frame 200 is an inverted "L" shape. When the shearing blade 300 cuts the branch, the moving rod 430 is buffered by the piston 411. However, the buffering requires a certain distance, so the blade will enter the blade groove 210 at this time, thereby avoiding the impact of the shearing blade 300 on the device. Before cutting the branch, the branch can be hooked by the shape of the fixing frame 200 and restricted to the surface of the fixing frame 200 before it is cut.

[0030] When using this utility model, the extension rod 110 is rotated according to the worker's own arm length and the position of the branch to be pruned, so that the length of the extension rod 110 and the power rod 100 can be increased or decreased.

[0031] When pruning branches, after selecting a good position, the branches are hooked by the fixing frame 200. When encountering branches that are difficult to prune, the two power rods 100 can be rotated. After rotating the two power rods 100 to a suitable position, the two power rods 100 are pressed inward by the arms. The connecting rod 120 pushes the positioning block 440 and the moving rod 430 on the positioning block 440, so that the moving rod 430 moves towards the sheath. At the same time, the moving block 420 moves in the support cylinder 500. The trigger block 421 on the surface of the moving block 420 moves at the same time. The branches are cut by the shearing blade 300 in conjunction with the fixing frame 200.

[0032] The moment the branch is cut, the moving rod 430 will drive the moving block 420 and the trigger block 421 to move rapidly toward the sheath. At this time, the trigger block 421 just comes into contact with the piston 411 in the cylinder 410. The trigger block 421 pushes the piston 411 to move rapidly in the cylinder 410 and compress the gas in the cylinder 410. This compresses the gas in the cylinder 410, increases the pressure in the cylinder 410, and applies an opposite force to the piston 411, which slows down the movement speed of the shearing blade 300. At the same time, the shearing blade 300 will move toward the blade groove 210 to cancel the impact force of the blade on the device and reduce the impact force of the shearing blade 300 on the device.

[0033] It should be noted that the shearing blades mentioned above are devices with relatively mature existing technology. Specific models can be selected according to actual needs, and will not be elaborated here.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pruning device for dwarfing densely planted pear trees, characterized in that, include: A power rod (100) and a support cylinder (500) are provided. A fixing frame (200) is fixedly connected to the surface of the support cylinder (500). An extension rod (110) is threadedly connected to the surface of the power rod (100). A shearing blade (300) is provided between the fixing frame (200) and the support cylinder (500). A buffer mechanism (400) includes a movable block (420) slidably connected to the inner wall of a support cylinder (500). Two trigger blocks (421) are fixedly connected to the top of the movable block (420). Two cylinders (410) are fixedly connected to the inner top wall of the support cylinder (500). A piston (411) is slidably connected to the inner wall of the cylinder (410). A spring (412) is connected between the inner top wall of the cylinder (410) and the piston (411).

2. The pruning device for dwarfing densely planted pear trees according to claim 1, characterized in that: The buffer mechanism (400) includes a movable rod (430), the surface of which is slidably connected to the upper and lower ends of the support cylinder (500), and the surface of which is fixedly connected to the movable block (420).

3. The pruning device for dwarfing densely planted pear trees according to claim 2, characterized in that: The surface of the power rod (100) is hinged with a connecting rod (120), and the ends of the two connecting rods (120) away from the power rod (100) are hinged with a positioning block (440). The surface of the moving rod (430) is fixedly connected with a second limiting ring (441), and the second limiting ring (441) is rotatably connected to the positioning block (440).

4. The pruning device for dwarfing densely planted pear trees according to claim 1, characterized in that: The bottom end of the cylinder (410) is provided with a circular opening, which is aligned vertically with the trigger block (421).

5. A pruning device for dwarfing densely planted pear trees according to claim 1, characterized in that: Two first limiting rings (442) are fixedly connected to the surface of the support cylinder (500), and rotating sleeves (450) are hinged to the top ends of the two power rods (100).

6. A pruning device for dwarfing densely planted pear trees according to claim 5, characterized in that: The inner wall of the rotating sleeve (450) has two annular grooves (451), and the first limiting ring (442) is rotatably connected in the annular grooves (451).

7. A pruning device for dwarfing densely planted pear trees according to claim 1, characterized in that: The surface of the fixing frame (200) is provided with a knife groove (210), and the cross-section of the fixing frame (200) is an inverted "L" shape.

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