Blade easily replaceable sapling pruning machine

Abstract

The utility model relates to the technical field of landscaping trimmer, disclose a blade is convenient for the nursery stock trimmer of replacement, including base, the top left -hand member of base is provided with motor, the output of motor rotatory connection has rotary shaft no.

Description

Technical Field

[0001] This utility model relates to the technical field of garden greening pruning machines, and in particular to a seedling pruning machine with easily replaceable blades. Background Technology

[0002] Tree pruning machines are indispensable tools in landscaping and nursery management. Their main function is to precisely prune the branches and leaves of seedlings using high-speed rotating blades to maintain the aesthetic shape of the seedlings, promote their healthy growth, and improve the efficiency of pruning operations. With the rapid development of the landscaping industry and the advancement of large-scale nursery planting, increasingly higher requirements are being placed on the performance, ease of use, and convenience of maintenance of tree pruning machines.

[0003] A search revealed Chinese Patent Publication No. CN220173866U, which discloses a seedling pruning machine. The machine includes a pruning unit and at least two support units arranged laterally to support the pruning unit. The pruning unit includes a blade holder, blade units mounted on the blade holder, and a drive unit for driving the blade units. The support units include a bracket and several wheels mounted on the bracket. This invention allows the two support units to be placed in the drainage ditches on either side of the planting area. The pruning unit, supported by the two support units, prunes the upper part of the seedlings, pruning in batches by propelling the device forward. The machine offers structural support, stable operation, and convenient operation. However, the blades in this invention use a traditional screw and threaded rod connection method, which requires manual loosening of the screws on the corresponding blades when replacement is needed, resulting in a cumbersome process. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a seedling pruning machine with easily replaceable blades, aiming to improve the problem in the prior art where, when a blade is damaged, the operator needs to manually loosen the screw on the corresponding blade to replace it, resulting in a cumbersome process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a seedling pruning machine with easily replaceable blades, comprising a base, a motor provided at the top left end of the base, a rotating shaft II rotatably connected to the output end of the motor, a locking mechanism provided at the bottom end of the rotating shaft II, a T-shaped positioning boss fixedly connected to the top middle end of the base, a fixing frame fixedly connected to the top of the T-shaped positioning boss, and a rotating mechanism provided at the top end of the fixing frame; The locking mechanism includes two pads, the inner walls of which are fixedly connected to the bottom end of the second rotating shaft. Two locking blocks are fixedly connected to the top of each pad, and a pressure plate is fixedly connected to the top of each locking block. A handle is fixedly connected to the outer wall of the pressure plate. A stabilizing frame is fixedly connected to the bottom of the two pads. A slider is slidably connected to the inner wall of the stabilizing frame. A groove is formed on the outer wall of the slider, and a lever is slidably connected to the inner wall of the groove. A return spring is provided at the bottom of the stabilizing frame.

[0006] Through the above technical solution: the motor drives the second rotating shaft to rotate, and the second rotating shaft drives the locking mechanism to operate. When changing the blade, press the handle to make the pressure plate push the locking block. The locking block drives the slider to slide along the stabilizer frame. The slider squeezes the reset spring, and the lever slides along the slide groove to unlock the locking block from the blade. After replacement, release the handle, the reset spring pushes the slider to reset, and the lever returns to its original position to make the locking block relock the blade. The rotating mechanism can realize the rotation adjustment of the equipment on the base through the fixed frame and the T-shaped positioning boss.

[0007] As a further description of the above technical solution: The rotating mechanism includes a fixed block, the bottom of which is fixedly connected to the top of the fixed frame. A rotating shaft is rotatably connected to the inner wall of the fixed block. A stabilizing plate is fixedly connected to the top of the rotating shaft. Multiple limiting holes are provided on the inner wall of the stabilizing plate. Limiting blocks are threadedly connected to the inner walls of the multiple limiting holes. A connecting pipe is provided on the left side of the stabilizing plate.

[0008] The above technical solution involves a fixed block that provides support at the top of the fixed frame. A rotating shaft connected to the inner wall of the fixed block is rotatable, and a stabilizing plate at the top of the rotating shaft rotates with it. The stabilizing plate is threadedly connected to the limiting block through the limiting hole in the inner wall to fix the external equipment. The connecting pipe on the left side of the stabilizing plate enables the transfer of media, thereby completing the rotation adjustment and connection functions.

[0009] As a further description of the above technical solution: Both of the two rotating shafts are fixedly connected to the outer walls of an eccentric wheel, and both of the two eccentric wheels are slidably connected to the outer walls of two high-carbon steel blades.

[0010] Through the above technical solution: the eccentric wheel fixed on the outer wall of the rotating shaft rotates with it, and the high-carbon steel blade slidably connected to the outer wall of the eccentric wheel is driven, and the high-carbon steel blade trimming operation is realized by the rotation of the eccentric wheel.

[0011] As a further description of the above technical solution: Dust covers are fixedly connected to the bottom of both stabilizers, and the outer walls of the multiple locking blocks are respectively connected to the inner walls of the two eccentric wheels.

[0012] Through the above technical solution: the dust cover at the bottom of the stabilizer serves a protective function, the outer wall of multiple locking blocks is connected to the inner wall of the eccentric wheel, and the locking blocks cooperate with the eccentric wheel to achieve the installation, positioning and stable support of the blade.

[0013] As a further description of the above technical solution: A connecting plate is provided at the right end of the fixed frame, and telescopic rods are provided on both the front and rear sides of the fixed frame.

[0014] The connection plate on the right end of the fixed frame, as described above, enables connection and fixation with external equipment. The telescopic rods on the front and rear sides of the fixed frame extend and retract during equipment operation, achieving height adjustment and buffering functions.

[0015] As a further description of the above technical solution: The bottom of the connecting pipe is fixedly connected to a transmission pipe, and multiple partitions are fixedly connected to the front and rear sides of the bottom of the base.

[0016] The above technical solution involves a transmission pipe fixed at the bottom of the connecting pipe, which serves as the conductive medium. Multiple partitions on the front and rear sides of the base separate the space at the bottom of the base, thus achieving both medium transmission and bottom space protection functions.

[0017] As a further description of the above technical solution: A transmitter is provided on the left side of the motor, and a transmission tube is provided at the output end of the transmitter.

[0018] Through the above technical solution: the transmitter on the left side of the motor is responsible for transmission control, and the transmission tube at its output end connects to the transmitter to realize power and signal transmission.

[0019] As a further description of the above technical solution: Side plates are fixedly connected to both the left and right sides of the base, and baffles are fixedly connected to the opposite sides of the two side plates.

[0020] The above technical solution involves fixing the side plates on the left and right sides of the base to enhance structural strength, and fixing the baffle on the side away from the side plate to protect the base and surrounding components and prevent external debris from entering.

[0021] This utility model has the following beneficial effects: 1. In this utility model, pressing the handle drives the pressure plate and the locking block to move together, causing the slider to slide along the stabilizer and compress the return spring. The lever moves along the slide groove to unlock the locking block and the blade. After being released, the return spring pushes the slider to reset, and the lever resets to lock the blade with the locking block. This solves the problem of cumbersome replacement caused by fixing the blade with screws in the prior art, and improves maintenance efficiency.

[0022] 2. In this utility model, the fixing block provides stable support, the rotating shaft is rotatably connected to the stabilizing plate, so that the stabilizing plate can drive the equipment to rotate, the limit block and the limit hole are threadedly connected to enhance the connection strength with external equipment, the connecting pipe ensures stable circuit transmission, breaks through the rigid connection limitation to realize rotational operation, and improves the flexibility and reliability of equipment use. Attached Figure Description

[0023] Figure 1 This is a perspective view of a seedling pruning machine with easily replaceable blades, as proposed in this utility model. Figure 2 This is a front view of a seedling pruning machine with easily replaceable blades, as proposed in this utility model. Figure 3 This is a schematic diagram of a portion of the structure of a seedling pruning machine with easily replaceable blades proposed in this utility model. Figure 4 This is a schematic diagram of the locking mechanism of a seedling pruning machine with easily replaceable blades, as proposed in this utility model. Figure 5 This is a structural exploded view of the locking mechanism of a seedling pruning machine with easily replaceable blades, as proposed in this utility model. Figure 6 for Figure 5 Enlarged view of point A in the image; Figure 7 This is a structural exploded view of the rotating mechanism of a seedling pruning machine with easily replaceable blades, as proposed in this utility model.

[0024] Legend: 1. Base; 2. Locking mechanism; 201. Pressure plate; 202. Handle; 203. Locking block; 204. Pad; 205. Slider; 206. Slide groove; 207. Lever; 208. Return spring; 209. Stabilizer; 3. Rotation mechanism; 301. Fixing block; 302. Rotation shaft one; 303. Stabilizer plate; 304. Limiting hole; 305. Limiting block; 306. Connecting pipe; 4. Motor; 5. Rotation shaft two; 6. T-shaped positioning boss; 7. Fixing frame; 8. Eccentric wheel; 9. High carbon steel knife; 10. Dust cover; 11. Side plate; 12. Connecting plate; 13. Telescopic rod; 14. Transmission pipe one; 15. Partition plate; 16. Transmitter; 17. Transmission pipe two; 18. Baffle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] Reference Figure 4 , Figure 5 and Figure 6 This utility model provides an embodiment of a seedling pruning machine with easily replaceable blades, including a base 1. The base 1 provides the installation foundation and support carrier for the overall equipment. A motor 4 is provided at the top left end of the base 1. The motor 4 provides power output for the operation of the equipment. The output end of the motor 4 is rotatably connected to a rotating shaft 5. The rotating shaft 5 can transmit the power of the motor 4 to downstream components. A locking mechanism 2 is provided at the bottom end of the rotating shaft 5. The locking mechanism 2 is used to realize the quick locking and unlocking of the blades. A T-shaped positioning boss 6 is fixedly connected at the top middle of the base 1. The T-shaped positioning boss 6 plays the role of precise positioning and stable support for the fixed frame 7. The top of the T-shaped positioning boss 6 is fixedly connected to the fixed frame 7. The fixed frame 7 provides the installation carrier and structural support for the rotating mechanism 3. The top of the fixed frame 7 is provided with the rotating mechanism 3. The rotating mechanism 3 can realize the rotation adjustment function of the equipment. The locking mechanism 2 includes two pads 204, which serve as transition supports connecting the rotating shaft 2 5 to other components. The inner walls of the pads 204 are fixedly connected to the bottom ends of the rotating shaft 2 5 to ensure that the pads 204 move synchronously with the rotating shaft 2 5. Two locking blocks 203 are fixedly connected to the top of each pad 204, which can form a locking engagement with the blade. A pressure plate 201 is fixedly connected to the top of the locking block 203, which can transmit the force of the handle 202 to the locking block 203. A handle 202 is fixedly connected to the outer wall of the pressure plate 201, which provides a force application point for the operator. A stabilizing frame 209 is fixedly connected to the bottom of the two pads 204, which provides sliding guidance and structural support for the slider 205. The inner wall of the stabilizer 209 is slidably connected to a slider 205, which can drive the locking block 203 to achieve displacement adjustment. The outer wall of the slider 205 is provided with a groove 206, which provides a sliding track for the lever 207. The inner wall of the groove 206 is slidably connected to the lever 207, which can switch the locking state by sliding. The bottom of the stabilizer 209 is provided with a return spring 208, which can provide a reset force to return the component to the initial position. The bottom of both stabilizers 209 is fixedly connected with a dust cover 10, which can prevent dust and impurities from entering the internal structure. The outer walls of multiple locking blocks 203 are also connected to the inner walls of two eccentric wheels 8, which can cooperate with the locking blocks 203 to achieve the installation and positioning of the blade. Specifically, in a seedling pruning machine with easily replaceable blades, a base 1 provides the installation foundation and support for the entire device. A motor 4 is installed at the top left end of the base 1, providing power output for the device's operation. The output end of the motor 4 is rotatably connected to a rotating shaft 5, which transmits the power of the motor 4 to downstream components, thus achieving power transmission. A locking mechanism 2 is installed at the bottom end of the rotating shaft 5, used to quickly lock and unlock the blades. A T-shaped positioning boss 6 is fixedly connected to the top middle of the base 1, providing precise positioning and stability. The function of the fixed support bracket 7 is to fix the top of the T-shaped positioning boss 6 to the fixed bracket 7. The fixed bracket 7 provides an installation carrier and structural support for the rotating mechanism 3. The rotating mechanism 3 is set at the top of the fixed bracket 7, which can realize the rotation adjustment function of the equipment. The two pads 204 of the locking mechanism 2 serve as transition supports to connect the rotating shaft 5 to other components. The inner wall of the pad 204 is fixedly connected to the bottom end of the rotating shaft 5 to ensure that the pad 204 moves synchronously with the rotating shaft 5. The top of the two pads 204 is fixedly connected to the locking block 203, which can engage with the locking block 203. The blades form a locking engagement. The top of the locking block 203 is fixedly connected to the pressure plate 201. The pressure plate 201 can transmit the force of the handle 202 to the locking block 203. The outer wall of the pressure plate 201 is fixedly connected to the handle 202, which provides a force application point for the operator. The bottom of the two pads 204 is fixedly connected to the stabilizer 209. The stabilizer 209 provides sliding guidance and structural support for the slider 205. The inner wall of the stabilizer 209 is slidably connected to the slider 205. The slider 205 can drive the locking block 203 to achieve displacement adjustment. The outer wall of the slider 205 has a groove 206. The slide groove 206 provides a sliding track for the lever 207. The inner wall of the slide groove 206 is slidably connected to the lever 207. The lever 207 can switch the locking state by sliding. The bottom of the stabilizer 209 is provided with a return spring 208. The return spring 208 can provide a reset force to return the component to the initial position. The bottom of the two stabilizers 209 is fixedly connected to the dust cover 10. The dust cover 10 can prevent dust and impurities from entering the internal structure. The outer walls of the multiple locking blocks 203 are connected to the inner walls of the two eccentric wheels 8. The eccentric wheels 8 can cooperate with the locking blocks 203 to realize the installation and positioning of the blade.

[0027] Reference Figure 1 , Figure 2 and Figure 7The rotating mechanism 3 includes a fixed block 301, which provides rotational support and a mounting base for the rotating shaft 302. The bottom of the fixed block 301 is fixedly connected to the top of the fixed frame 7, achieving a stable connection between the rotating mechanism 3 and the fixed frame 7. The rotating shaft 302 is rotatably connected to the inner wall of the fixed block 301. The rotating shaft 302 can transmit the rotational motion of the stabilizing plate 303 to downstream components. The top of the rotating shaft 302 is fixedly connected to the stabilizing plate 303, which is used to support external connected equipment and transmit rotational power. The inner wall of the stabilizing plate 303 is provided with multiple limiting holes 304. 04 provides threaded connection points for the limiting block 305. The inner walls of multiple limiting holes 304 are threadedly connected to the limiting block 305. The limiting block 305 enhances the connection strength with external equipment through threaded engagement. A connecting pipe 306 is provided on the left side of the stabilizing plate 303. The connecting pipe 306 is used to realize the transfer connection of the circuit or air circuit. A transmission pipe 14 is fixedly connected to the bottom of the connecting pipe 306. The transmission pipe 14 can guide the medium transmitted by the connecting pipe 306 to the designated component. Multiple partitions 15 are fixedly connected to the front and rear sides of the bottom of the base 1. The partitions 15 can separate and protect the bottom space of the base 1 and enhance the structural stability. Specifically, the fixing block 301 of the rotating mechanism 3 provides rotational support and a mounting base for the rotating shaft 302. The bottom of the fixing block 301 is fixedly connected to the top of the fixing frame 7, realizing a stable connection between the rotating mechanism 3 and the fixing frame 7, and providing stable support for the entire rotating mechanism 3. The inner wall of the fixing block 301 is rotatably connected to the rotating shaft 302. The rotating shaft 302 can transmit the rotational movement of the stabilizing plate 303 to downstream components to realize power transmission. The top of the rotating shaft 302 is fixedly connected to the stabilizing plate 303. The stabilizing plate 303 is used to support external connected equipment and transmit rotational power to drive the entire equipment to rotate. Multiple limiting holes 304 are opened on the inner wall of the stabilizing plate 303. The limiting hole 304 provides a threaded connection point for the limiting block 305. The inner wall of the multiple limiting holes 304 is threaded to the limiting block 305. The limiting block 305 enhances the connection strength with external equipment through thread engagement, ensuring a stable connection. A connecting pipe 306 is provided on the left side of the stabilizing plate 303. The connecting pipe 306 is used to realize the transfer connection of the circuit or air circuit. The bottom of the connecting pipe 306 is fixedly connected to the transmission pipe 14. The transmission pipe 14 can guide the medium transmitted by the connecting pipe 306 to the designated component, ensuring smooth medium transmission. Multiple partitions 15 are fixedly connected to the front and rear sides of the bottom of the base 1. The partitions 15 can separate and protect the bottom space of the base 1 and enhance the structural stability.

[0028] Reference Figure 1 , Figure 2 and Figure 3Both rotating shafts 5 have eccentric wheels 8 fixedly connected to their outer walls. The eccentric wheels 8 convert the rotational motion of the rotating shafts 5 into the reciprocating cutting motion of the blades. Two high-carbon steel blades 9 are slidably connected to the outer walls of the two eccentric wheels 8. The high-carbon steel blades 9 serve as cutting components for pruning seedlings. A connecting plate 12 is provided at the right end of the fixed frame 7. The connecting plate 12 is used to connect and fix the fixed frame 7 to external equipment. Telescopic rods 13 are provided on both the front and rear sides of the fixed frame 7. The telescopic rods 13 can be adjusted in height during equipment operation. For buffering and shock absorption, a transmitter 16 is provided on the left side of the motor 4. The transmitter 16 is used to realize the transmission control of power or signal. The output end of the transmitter 16 is provided with a transmission tube 17. The transmission tube 17 can stably transmit the medium of the transmitter 16 to the target component. Side plates 11 are fixedly connected to both the left and right sides of the base 1. The side plates 11 are used to enhance the structural strength of the base 1 and provide protection. Baffles 18 are fixedly connected to the opposite side of the two side plates 11. Baffles 18 can block external debris from entering the equipment and ensure safe operation. Specifically, eccentric wheels 8 are fixedly connected to the outer walls of the two rotating shafts 2 5. When the rotating shafts 2 5 rotate, they drive the eccentric wheels 8 to rotate synchronously. The eccentric wheels 8 convert the rotational motion of the rotating shafts 2 5 into the reciprocating cutting motion of the blades, providing power transmission for the pruning operation. Two high-carbon steel blades 9 are slidably connected to the outer walls of the two eccentric wheels 8. The reciprocating motion of the eccentric wheels 8 drives the high-carbon steel blades 9 to move synchronously. The high-carbon steel blades 9, as cutting components, directly prune the seedlings to achieve the shaping and trimming of the seedlings. A connecting plate 12 is set at the right end of the fixed frame 7. The connecting plate 12 connects and fixes the fixed frame 7 to the external equipment to ensure the overall installation of the equipment is stable. Telescopic rods 13 are set on the front and rear sides of the fixed frame 7. The telescopic rods 13 are adjusted by telescoping during equipment operation. To achieve height adjustment and provide buffering and shock absorption, ensuring stable equipment operation, a transmitter 16 is installed on the left side of motor 4. The transmitter 16 is responsible for power or signal transmission control, providing power and command transmission support to various components of the equipment. A transmission pipe 17 is installed at the output end of the transmitter 16. The transmission pipe 17 stably transmits the medium of the transmitter 16 to the target component, ensuring smooth power or signal transmission. Side plates 11 are fixedly connected to the left and right sides of the base 1. The side plates 11 enhance the structural strength of the base 1 and provide lateral protection for the components on the base 1. A baffle 18 is fixedly connected to the side of the two side plates 11 that is far apart from each other. The baffle 18 prevents external debris from entering the equipment and avoids debris from interfering with the operation of the components, ensuring the safe operation of the equipment.

[0029] Working principle: When the high-carbon steel knife 9 is damaged and needs to be replaced, the motor 4 must first be stopped. The operator presses down the handle 202. Since the pressure plate 201 is fixedly connected to the handle 202, the pressure plate 201 moves downward synchronously with the handle 202, and exerts a squeezing force on the locking block 203. After being squeezed, the locking block 203 pushes the slider 205 to move downward along the guide trajectory of the stabilizer 209. At this time, the return spring 208 under the slider 205 is compressed and deformed. During this process, the lever 207, which was originally at the bottom of the inner wall of the slide groove 206, slides upward along the groove to the top of the slide groove 206. The locking block 203 and the high-carbon steel knife 9... When the locking separation is complete, the high-carbon steel blade 9 can be pulled out along the slide rail on the inner wall of the eccentric wheel 8, completing the removal of the old blade. When installing the new high-carbon steel blade 9, press the handle 202 down again, and the lever 207 slides from the top of the slide groove 206 to the bottom, triggering the reset mechanism. The reset spring 208 releases elastic potential energy, pushes the slider 205 upward to reset, and drives the locking block 203 to re-engage into the positioning structure of the high-carbon steel blade 9, thus locking the blade. There is no need to use tools to tighten the screws. The blade can be removed and installed by pressing the handle 202, which greatly shortens the replacement time and solves the problem of the traditional screw fixing method requiring manual loosening and unscrewing of screws and cumbersome operation, thus improving maintenance efficiency. Furthermore, when the base 1 needs to be rotated, the connecting plate 12 and the stabilizing plate 303 are first connected to the external equipment. The external equipment connected to the inner wall of the stabilizing plate 303 is threadedly connected along the limiting hole 304 by the limiting block 305. When the rotation function is started, the stabilizing plate 303 drives the rotating shaft 302 to rotate synchronously. Since the fixing block 301 and the rotating shaft 302 are fixedly connected, the power is transmitted to the base 1 through the fixing block 301, realizing the stable rotation operation of the base 1. At the same time, the connecting pipe 306 is connected to the transmitter 16 outside the motor 4 through the transmission pipe 17 to form a stable circuit transmission channel, ensuring that the power supply is uninterrupted during the rotation process. The telescopic rod 13 realizes flexible height adjustment during the rotation process when the rotating mechanism 3 is operating. At the same time, the elastic buffer effect is used to offset the vibration generated by the rotation, further ensuring the stability of the equipment operation.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blade easily replaceable nursery pruning machine comprising a base (1), characterized in that: A motor (4) is provided at the top left end of the base (1). The output end of the motor (4) is rotatably connected to a rotating shaft (5). A locking mechanism (2) is provided at the bottom end of the rotating shaft (5). A T-shaped positioning boss (6) is fixedly connected at the top middle end of the base (1). A fixing frame (7) is fixedly connected at the top of the T-shaped positioning boss (6). A rotating mechanism (3) is provided at the top end of the fixing frame (7). The locking mechanism (2) includes two pads (204). The inner walls of the pads (204) are fixedly connected to the bottom end of the rotating shaft (5). The tops of the two pads (204) are fixedly connected to two locking blocks (203). The top of the locking blocks (203) is fixedly connected to a pressure plate (201). The outer wall of the pressure plate (201) is fixedly connected to a handle (202). The bottoms of the two pads (204) are fixedly connected to a stabilizing frame (209). The inner wall of the stabilizing frame (209) is slidably connected to a slider (205). The outer wall of the slider (205) is provided with a groove (206). The inner wall of the groove (206) is slidably connected to a lever (207). The bottom of the stabilizing frame (209) is provided with a return spring (208).

2. The blade-replaceable sapling pruning machine according to claim 1, characterized in that: The rotating mechanism (3) includes a fixed block (301), the bottom of which is fixedly connected to the top of the fixed frame (7). A rotating shaft (302) is rotatably connected to the inner wall of the fixed block (301). A stabilizing plate (303) is fixedly connected to the top of the rotating shaft (302). A plurality of limiting holes (304) are provided on the inner wall of the stabilizing plate (303). A limiting block (305) is threadedly connected to the inner wall of the plurality of limiting holes (304). A connecting pipe (306) is provided on the left side of the stabilizing plate (303).

3. The blade-replaceable sapling pruning machine according to claim 1, characterized in that: The outer walls of the two rotating shafts (5) are fixedly connected with eccentric wheels (8), and the outer walls of the two eccentric wheels (8) are slidably connected with two high-carbon steel blades (9).

4. The blade-replaceable tree-plant pruning machine according to claim 3, characterized in that: The bottom of each of the two stabilizers (209) is fixedly connected with a dust cover (10), and the outer walls of the multiple locking blocks (203) are also connected to the inner walls of the two eccentric wheels (8).

5. The blade-replaceable tree-plant pruning machine of claim 1, wherein: A connecting plate (12) is provided at the right end of the fixed frame (7), and telescopic rods (13) are provided on both the front and rear sides of the fixed frame (7).

6. The blade-replaceable tree-plant pruning machine of claim 2, wherein: The bottom of the connecting pipe (306) is fixedly connected to the transmission pipe (14), and multiple partitions (15) are fixedly connected to the front and rear sides of the bottom of the base (1).

7. The blade-replaceable tree-plant pruning machine of claim 1, wherein: A transmitter (16) is provided on the left side of the motor (4), and a transmission tube (17) is provided at the output end of the transmitter (16).

8. A seedling pruning machine with easily replaceable blades according to claim 1, characterized in that: The base (1) is fixedly connected to side plates (11) on both the left and right sides, and baffles (18) are fixedly connected to the opposite sides of the two side plates (11).

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