CN111656959A

CN111656959A - A pick device for watermelon

Info

Publication number: CN111656959A
Application number: CN202010740764.XA
Authority: CN
Inventors: 谢长青
Original assignee: Jingmen Duodao Shuangjing Liuwei Watermelon Professional Cooperative
Current assignee: Jingmen Duodao Shuangjing Liuwei Watermelon Professional Cooperative
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-09-15

Abstract

The invention relates to the technical field of watermelon picking, in particular to a picking device for watermelons, wherein a first sleeve rod is driven to move downwards through a first ball moving block, so that a cutting blade moves downwards, a watermelon vine is cut off before the watermelon is clamped, the phenomenon that the watermelon vine is pulled when the watermelon is clamped to cause damage of the watermelon vine is effectively prevented, and the normal growth of other watermelons is ensured; the inner clamping arc block is matched with the outer clamping block, and the force for clamping the watermelon is buffered by the inner clamping arc block through the buffer spring, so that the watermelon is effectively prevented from being damaged due to overlarge stress; the transmission mechanism drives the cutting mechanism and the clamping mechanism to move up and down simultaneously, so that the clamping mechanism preliminarily fixes the watermelon while the cutting mechanism cuts the watermelon vine, the excessive movement of the watermelon vine during cutting is prevented, and the cutting is facilitated; make cutting mechanism and fixture can effectively turn to according to the trend that the watermelon was grown through steering mechanism and improve and pick efficiency, prevent to remove the frame and remove too much in the melon field, damage the melon field.

Description

A pick device for watermelon

Technical Field

The invention relates to the technical field of watermelon picking, in particular to a picking device for watermelons.

Background

The watermelon is named as 'king of midsummer', is fresh and thirst-quenching, sweet and juicy in taste and cold in nature, can cool down and relieve summer heat, promote the production of body fluid to quench thirst, induce diuresis and relieve restlessness, is beneficial to treating symptoms such as chest and diaphragm qi quintessence, fullness and discomfort, dysuresia, nasal scratching and sore generation, summer heat, heatstroke, alcoholism and the like, contains a large amount of oil such as glucose, malic acid, fructose, protein amino acid, lycopene, rich vitamin C and the like besides no fat and cholesterol, and is a food which is rich in nutrition, purity and safe to use. Watermelon pulp contains protein, glucose, sucrose, fructose, malic acid, citrulline, glutamic acid, arginine, phosphoric acid, alanine, propionic acid, ethylene glycol, betaine, adenine, carotene, tomato hydrocarbon, Liu H tomato hydrocarbon, vitamin A, vitamin B, vitamin C and various aldehydes; the seed contains fatty oil, protein, vitamin B2, starch, pentosan, propionic acid, urea and sucrose, and can be used as recreation food; the pericarp is rich in vitamin C and vitamin E, and can be used as medicine, and has effects of clearing heat, promoting urination, and lowering blood pressure.

The watermelon is one of important fruits, has considerable market value and has great consumption potential in domestic and international markets. The watermelon yield in China is huge, the planting area and the yield of the watermelon are increased year by year, but the existing watermelon picking still needs manual picking, and due to the characteristics that watermelon vines are densely distributed and crawl in the ground to grow and the like, people need to bend down to pick the watermelon manually, the watermelon picking is difficult to adopt instruments, the picking efficiency is low, and a large amount of labor is needed in the watermelon picking process, so that the picking efficiency is reduced, and the picking cost is improved.

The invention discloses a watermelon picking device which comprises a base, wherein a watermelon tray is fixedly connected to the top of the base, a rotating column is rotatably connected to the middle of the top of the watermelon tray, a first motor is fixedly connected to the bottom of the watermelon tray, an output shaft of the first motor is fixedly connected with a first rotating wheel, the first rotating wheel is connected with a second rotating wheel through a first belt in a transmission mode, the second rotating wheel is fixedly connected with the rotating column, and a fixing block is fixedly connected to the top of the rotating column. This device is picked to watermelon has reached the watermelon centre gripping, reduces labourer's intensity of labour, saves the purpose of bowing and embracing the watermelon, has reached and has cut off the tendril of the watermelon that presss from both sides, saves labourer's manual purpose of cutting off, has reached and has put into the watermelon tray to the watermelon that presss from both sides, then continues to pick the watermelon, increases the great purpose that reduces intensity of labour of watermelon picking efficiency.

Although the technical scheme solves the problems of high labor intensity, low efficiency and high picking cost in manual picking, the watermelon vine is cut off after the watermelon is grabbed when the watermelon is picked, the watermelon vine is easy to be pulled, the damage to the watermelon vine or the death of the watermelon vine are caused, the normal growth of other watermelons is influenced, and the force for clamping the watermelon cannot be effectively adjusted while the watermelon is picked, so that the watermelon is easy to damage.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a picking device for watermelons, which can effectively overcome the problems that the vine of the watermelon is cut off after the watermelon is grabbed, the vine of the watermelon is easy to be pulled up, the vine of the watermelon is damaged or the vine of the watermelon dies, and the normal growth of other watermelons is influenced in the prior art, and also solves the problems that the strength for clamping the watermelon cannot be effectively adjusted and the watermelon is easy to be damaged when the watermelon is picked.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a picking apparatus for watermelons, comprising a moving frame; the lower end of the movable frame is provided with a moving mechanism, the lower side of the moving mechanism is provided with a transmission mechanism, the right side of the transmission mechanism is connected with a cutting mechanism, the left side of the transmission mechanism is connected with a clamping mechanism, and the lower end of the left side of the movable frame is fixedly connected with a containing disc;

the transmission mechanism comprises a fixed plate, a transmission motor, a transmission wheel set, a ball screw, a ball moving block and a ball moving block, the transmission motor is installed on the right side of the upper end of the fixed plate, the output end of the transmission motor is connected with the ball screw, the lower end of the ball screw penetrates through the fixed plate and is connected with the fixed plate in a rotating mode, the ball moving block is connected to the ball screw in a threaded mode, the left end of the fixed plate is connected with the ball screw in a rotating mode, the ball screw penetrates through the fixed plate, the ball moving block is connected to the ball screw in a threaded mode, a stop block is fixedly connected to the tail end of the upper side of the ball screw, and the.

Further, the drive mechanism upper end is provided with steering mechanism, the steering mechanism upper end is connected with moving mechanism, steering mechanism is including turning to the motor frame, turning to motor, steering spindle, L type connecting rod and reinforcing plate, turn to motor frame upper end and be connected with moving mechanism, turn to and install in the motor frame and turn to the motor, it is connected with the steering spindle to turn to the motor output, the steering spindle lower extreme is worn out and is turned to the motor frame to with fixed plate middle part rigid coupling, turn to motor frame week side lower extreme and seted up the ring channel, sliding connection has L type connecting rod in the ring channel, L type connecting rod lower extreme and fixed plate rigid coupling, L type connecting rod inner rigid coupling has the reinforcing plate, reinforcing plate and fixed plate rigid coupling.

Furthermore, the moving mechanism comprises a moving motor, a moving screw, a guide rod and a moving block, the moving motor is installed on the upper side of the right end of the moving frame, the output end of the moving motor is connected with the moving screw, the left end of the moving screw extends leftwards and is rotatably connected with the left end of the moving frame, the moving block is screwed on the moving screw, the guide rod is located at the upper end of the moving screw and is fixedly connected with the moving frame, and the guide rod penetrates through the upper end of the moving block and is slidably connected with the moving block.

Furthermore, the cutting mechanism comprises a sleeve rod, a locking bolt and a cutting blade, a first long groove is formed in the upper end of the sleeve rod, the sleeve rod is sleeved outside the first ball screw through the first long groove, a ball moving block is fixedly connected to the upper end of the inside of the first long groove, a sliding groove is formed in the lower end of the sleeve rod, the cutting blade is installed in the sliding groove, the locking bolt is arranged on the right side of the sliding groove, and the locking bolt is matched with the cutting blade.

Furthermore, the clamping mechanism comprises a second loop bar, a long plate, an outer clamping block, an inner clamping arc block, a buffer spring and a telescopic rod, wherein a second long groove is formed in the upper end of the second loop bar, the second loop bar is sleeved on the outer side of a second ball screw through the second long groove, a second ball moving block is fixedly connected to the upper end of the inner portion of the second long groove, the lower end of the second loop bar is fixedly connected with the long plate, the front side and the rear side of the long plate are hinged with the outer clamping block, the inner clamping arc block is rotatably connected to the inner side of the outer clamping block, the middle portions of the outer clamping block and the inner clamping arc block are connected through the buffer spring, and the upper end of the inner side of the outer clamping block between the.

Furthermore, the equal rigid coupling in side has articulated seat No. one around the long slab, outer grip block upper end inserts in articulated seat No. one to rotate with articulated seat and be connected, outer grip block inboard upper end rigid coupling has articulated seat No. two, interior centre gripping arc piece upper end inserts in articulated seat No. two, and rotate with articulated seat No. two and be connected.

Furthermore, universal wheels are installed at the lower end of the moving frame, supporting handles are fixedly connected to the front ends of the left side and the right side of the moving frame, a rechargeable battery pack is arranged at the upper end of the moving frame, and a control button is arranged at the upper end of each supporting handle.

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

according to the watermelon clamp, the first sleeve rod is driven to move downwards through the first ball moving block, so that the cutting blade moves downwards, the watermelon vine is cut off before the watermelon is clamped, the phenomenon that the watermelon vine is pulled up when the watermelon is clamped, the damage or death of the watermelon vine is effectively prevented, and the normal growth of other watermelons is ensured; the inner clamping arc block is matched with the outer clamping block, and the force for clamping the watermelon is buffered by the inner clamping arc block through the buffer spring when the outer clamping block is contracted due to the tensile force of the telescopic rod, so that the watermelon is effectively prevented from being damaged due to overlarge stress; the cutting mechanism and the clamping mechanism are driven to move up and down through the transmission mechanism, so that the clamping mechanism can preliminarily fix the watermelon while the cutting mechanism cuts the watermelon vine, the watermelon vine is prevented from moving too much during cutting, and the cutting is facilitated; make cutting mechanism and fixture can effectively pick according to the trend that the watermelon is grown through setting up steering mechanism, improve and pick efficiency and prevent to remove the frame and remove too much in the melon field, damage the melon field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a left side view of the clamping mechanism of the present invention;

FIG. 3 is a left side view of the cutting mechanism of the present invention;

FIG. 4 is a schematic diagram of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the steering mechanism of the present invention in a front view configuration;

FIG. 6 is a schematic view of the steering mechanism of the present invention;

the reference numerals in the drawings denote: 1-moving frame, 2-moving mechanism, 201-moving motor, 202-moving screw, 203-guide rod, 204-moving block, 3-transmission mechanism, 301-fixing plate, 302-transmission motor, 303-transmission wheel set, 304-first ball screw, 305-second ball screw, 306-first ball moving block, 307-second ball moving block, 308-stop block, 4-cutting mechanism, 401-first loop bar, 402-locking bolt, 403-cutting blade, 404-first long groove, 405-sliding groove, 5-clamping mechanism, 501-second loop bar, 502-long plate, 503-outer clamping block, 504-inner clamping arc block, 505-buffer spring, 506-telescopic rod, 507-second long groove, 508-a first hinged seat, 509-a second hinged seat, 6-a containing disc, 7-a steering mechanism, 701-a steering motor frame, 702-a steering motor, 703-a steering shaft, 704-an L-shaped connecting rod, 705-a reinforcing plate, 706-an annular groove, 8-universal wheels, 9-a supporting handle, 10-a rechargeable battery pack and 11-a control button.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Example one

Referring to fig. 1 to 4, the picking device for watermelons of the present embodiment includes a moving frame 1, specifically, universal wheels 8 are installed at the lower end of the moving frame 1, a holding handle 9 is fixedly connected to the front ends of the left and right sides of the moving frame 1, a rechargeable battery pack 10 is arranged at the upper end of the moving frame 1, and a control button 11 is arranged at the upper end of the holding handle 9. The lower end of the movable frame 1 is provided with a movable mechanism 2, the lower side of the movable mechanism 2 is provided with a transmission mechanism 3, the right side of the transmission mechanism 3 is connected with a cutting mechanism 4, the left side of the transmission mechanism is connected with a clamping mechanism 5, and the lower end of the left side of the movable frame 1 is fixedly connected with a containing disc 6.

Specifically, referring to fig. 1 to 3, the transmission mechanism 3 includes a fixed plate 301, a transmission motor 302, a transmission wheel set 303, a ball screw 304, a ball screw 305, a ball moving block 306 and a ball moving block 307, the transmission motor 302 is installed on the right side of the upper end of the fixed plate 301, the output end of the transmission motor 302 is connected with the ball screw 304, the lower end of the ball screw 304 penetrates through the fixed plate 301 and is rotatably connected with the fixed plate 301, the ball moving block 306 is screwed on the ball screw 304, the left end of the fixed plate 301 is rotatably connected with the ball screw 305, the ball screw 305 penetrates through the fixed plate 301, the ball moving block 307 is screwed on the ball screw 305, a stop block 308 is fixedly connected to the tail end of the upper side of the ball screw 308, and the ball screw 304 and the ball screw 305 are connected through the transmission wheel set 303.

Specifically, referring to fig. 1, the moving mechanism 2 includes a moving motor 201, a moving screw 202, a guide rod 203 and a moving block 204, the moving motor 201 is installed on the upper side of the right end of the moving frame 1, the output end of the moving motor 201 is connected with the moving screw 202, the left end of the moving screw 202 extends leftward and is rotatably connected with the left end of the moving frame 1, the moving block 204 is screwed on the moving screw 202, the guide rod 203 is located at the upper end of the moving screw 202 and is fixedly connected with the moving frame 1, and the guide rod 203 penetrates through the upper end of the moving block 204 and is slidably connected with the moving block.

Specifically, referring to fig. 1, 3 and 4, the cutting mechanism 4 includes a first sleeve rod 401, a locking bolt 402 and a cutting blade 403, a first long groove 404 is formed in the upper end of the first sleeve rod 401, the first sleeve rod 401 is sleeved outside the first ball screw 304 through the first long groove 404, a first ball moving block 306 is fixedly connected to the upper end inside the first long groove 404, a sliding groove 405 is formed in the lower end of the first sleeve rod 401, the cutting blade 403 is installed in the sliding groove 405, the locking bolt 402 is arranged on the right side of the sliding groove 405, and the locking bolt 402 is matched with the cutting blade 403.

Specifically, referring to fig. 1 and 2, the clamping mechanism 5 includes a second sleeve rod 501, a long plate 502, an outer clamping block 503, an inner clamping arc block 504, a buffer spring 505 and a telescopic rod 506, the upper end of the second sleeve rod 501 is provided with a second long groove 507, the second sleeve rod 501 is sleeved outside the second ball screw 305 through the second long groove 507, a second ball moving block 307 is fixedly connected to the upper end inside the second long groove 507, the lower end of the second sleeve rod 501 is fixedly connected with the long plate 502, the front side and the rear side of the long plate 502 are both hinged with the outer clamping block 503, the inner side of the outer clamping block 503 is rotatably connected with the inner clamping arc block 504, the middle parts of the outer clamping block 503 and the inner clamping arc block 504 are connected through the buffer spring 505, and the upper end of the inner side between the front side and the rear side outer clamping. A first hinge seat 508 is fixedly connected to the front side and the rear side of the long plate 502, the upper end of the outer clamping block 503 is inserted into the first hinge seat 508 and is rotatably connected with the first hinge seat 508, a second hinge seat 509 is fixedly connected to the upper end of the inner side of the outer clamping block 503, and the upper end of the inner clamping arc block 504 is inserted into the second hinge seat 509 and is rotatably connected with the second hinge seat 509.

Referring to fig. 1 to 4, the using method of the present invention is: pushing the supporting handle 9, driving the moving frame 1 to move into the watermelon field through the universal wheel 8 and moving to the side of the watermelon to be picked; starting the moving motor 201, rotating the moving screw 202, only moving the moving block 204 under the limitation of the guide rod 203, and driving the transmission mechanism 3 to move by the moving block 204 so as to enable the cutting mechanism 4 and the clamping mechanism 5 to move to the upper end of the watermelon to be picked; the transmission motor 302 is started to drive the first ball screw 304 to rotate, the first ball screw 304 and the second ball screw 305 rotate simultaneously through transmission of the transmission wheel set 303, the first sleeve rod 401 and the second sleeve rod 501 move downwards under the driving of the first ball moving block 306 and the second ball moving block 307, the watermelon is fixed in the middle by the outer clamping block 503 and the inner clamping arc block 504, and the cutting blade 403 moves downwards to cut off the watermelon vine of the watermelon; the telescopic rod 506 contracts to drive the outer clamping block 503 to rotate inwards and drive the inner clamping arc block 504 to rotate inwards, the inner clamping arc block 504 clamps the watermelon, and after the buffer spring 505 contracts to a certain extent, the telescopic rod 506 stops contracting; the transmission motor 302 rotates reversely, so that the first ball moving block 306 and the second ball moving block 307 drive the first sleeve rod 401 and the second sleeve rod 501 to move upwards to clamp the watermelon, the inner clamping arc block 504 rotates outwards under the action of the gravity of the watermelon, and the watermelon is clamped through the reaction force of the end of the buffer spring 505; the moving motor 201 rotates reversely, so that the moving block 204 drives the clamping mechanism 5 to move towards the left side, the watermelons are moved to the upper end of the placing tray 6, the watermelons are placed in the placing tray 6, and the watermelons are picked continuously.

Example two

As shown in fig. 1 to 6, in which the same or corresponding components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, only the points of difference from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that: referring to fig. 5 and 6, a steering mechanism 7 is arranged at the upper end of the transmission mechanism 3, the upper end of the steering mechanism 7 is connected with the moving mechanism 2, the steering mechanism 7 comprises a steering motor frame 701, a steering motor 702, a steering shaft 703, an L-shaped connecting rod 704 and a reinforcing plate 705, the upper end of the steering motor frame 701 is connected with the moving mechanism 2, the steering motor 702 is installed in the steering motor frame 701, the output end of the steering motor 702 is connected with the steering shaft 703, the lower end of the steering shaft 703 penetrates through the steering motor frame 701 and is fixedly connected with the middle part of the fixed plate 301, an annular groove 706 is formed in the lower end of the peripheral side of the steering motor frame 701, the L-shaped connecting rod 704 is slidably connected in the annular groove 706, the lower end of the L-shaped connecting rod 704 is fixedly connected with the fixed plate.

When moving the frame and removing in the melon ridge clearance in the melon field, because the extension direction of watermelon is not certain, drive fixed plate 301 through steering mechanism 7 and rotate, make cutting mechanism 4 and fixture 5 produce and turn to, make fixture 5 and cutting mechanism 4 and take the watermelon of picking to keep roughly vertical state, be convenient for pick the watermelon, cut the melon vine, effectively improve and pick efficiency, and effectively reduce because of picking the different number of times that removes moving frame 1 in watermelon position, reduce moving frame 1 and remove the scope in the melon field, reduce the damage to the melon vine.

The using method comprises the following steps: the steering motor 702 is started to rotate the steering shaft 703 and drive the fixing plate 301 to rotate, and the L-shaped connecting rod 704 fixedly connected to the upper end of the fixing plate 301 rotates in the annular groove 706 to drive the cutting mechanism 4 and the clamping mechanism 5 at the lower end of the fixing plate 301 to steer.

It should be noted that the electrical devices used in the whole device are all common devices, which belong to the prior mature technology, and the control circuit can be realized by simple programming by those skilled in the art, which belong to the common knowledge in the field, and only be used without improvement, and the present invention is mainly used for protecting the mechanical device, so the present invention does not explain the control mode and the circuit connection in detail.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A picking device for watermelons, comprising a moving frame (1); the cutting machine is characterized in that a moving mechanism (2) is arranged at the lower end of the moving frame (1), a transmission mechanism (3) is arranged at the lower side of the moving mechanism (2), the right side of the transmission mechanism (3) is connected with a cutting mechanism (4), the left side of the transmission mechanism is connected with a clamping mechanism (5), and a containing disc (6) is fixedly connected at the lower end of the left side of the moving frame (1);

the transmission mechanism (3) comprises a fixing plate (301), a transmission motor (302), a transmission wheel set (303), a first ball screw (304), a second ball screw (305), a first ball moving block (306) and a second ball moving block (307), the transmission motor (302) is installed on the right side of the upper end of the fixing plate (301), the output end of the transmission motor (302) is connected with the first ball screw (304), the lower end of the first ball screw (304) penetrates through the fixing plate (301) and is rotatably connected with the fixing plate (301), the first ball moving block (306) is screwed on the first ball screw (304), the left end of the fixing plate (301) is rotatably connected with the second ball screw (305), the second ball screw (305) penetrates through the fixing plate (301), the second ball screw (305) is screwed with the second ball moving block (307), and the tail end of the upper side of the second ball screw (308) is fixedly connected with a stop block (308), the first ball screw (304) and the second ball screw (305) are connected through a transmission wheel set (303).

2. The picking device for watermelons according to claim 1, wherein a steering mechanism (7) is arranged at the upper end of the transmission mechanism (3), the upper end of the steering mechanism (7) is connected with the moving mechanism (2), the steering mechanism (7) comprises a steering motor frame (701), a steering motor (702), a steering shaft (703), an L-shaped connecting rod (704) and a reinforcing plate (705), the upper end of the steering motor frame (701) is connected with the moving mechanism (2), the steering motor (702) is installed in the steering motor frame (701), the output end of the steering motor (702) is connected with the steering shaft (703), the lower end of the steering shaft (703) penetrates out of the steering motor frame (701) and is fixedly connected with the middle part of the fixing plate (301), an annular groove (706) is formed at the lower end of the peripheral side of the steering motor frame (701), the L-shaped connecting rod (704) is slidably connected in the annular groove (706), the lower end of the L-shaped connecting rod (704) is fixedly connected with the fixed plate (301), the inner end of the L-shaped connecting rod (704) is fixedly connected with a reinforcing plate (705), and the reinforcing plate (705) is fixedly connected with the fixed plate (301).

3. The watermelon picking device according to claim 1, wherein the moving mechanism (2) comprises a moving motor (201), a moving screw (202), a guide rod (203) and a moving block (204), the moving motor (201) is installed on the upper side of the right end of the moving frame (1), the moving screw (202) is connected to the output end of the moving motor (201), the left end of the moving screw (202) extends leftwards and is rotatably connected with the left end of the moving frame (1), the moving block (204) is screwed on the moving screw (202), the guide rod (203) is located on the upper end of the moving screw (202) and is fixedly connected with the moving frame (1), and the guide rod (203) penetrates through the upper end of the moving block (204) and is slidably connected with the moving block (204).

4. The picking device for watermelons according to claim 1, wherein the cutting mechanism (4) comprises a first sleeve rod (401), a locking bolt (402) and a cutting blade (403), a first long groove (404) is formed in the upper end of the first sleeve rod (401), the first sleeve rod (401) is sleeved outside the first ball screw (304) through the first long groove (404), the first ball moving block (306) is fixedly connected to the upper end inside the first long groove (404), a sliding groove (405) is formed in the lower end of the first sleeve rod (401), the cutting blade (403) is installed in the sliding groove (405), the locking bolt (402) is arranged on the right side of the sliding groove (405), and the locking bolt (402) is matched with the cutting blade (403).

5. The watermelon picking device according to claim 1, wherein the clamping mechanism (5) comprises a second sleeve rod (501), a long plate (502), an outer clamping block (503), an inner clamping arc block (504), a buffer spring (505) and a telescopic rod (506), the upper end of the second sleeve rod (501) is provided with a second long groove (507), the second sleeve rod (501) is sleeved outside the second ball screw (305) through the second long groove (507), the second ball moving block (307) is fixedly connected to the upper end inside the second long groove (507), the lower end of the second sleeve rod (501) is fixedly connected with the long plate (502), the front side and the rear side of the long plate (502) are hinged with outer clamping blocks (503), the inner side of the outer clamping block (503) is rotatably connected with the inner clamping arc block (504), the middle parts of the outer clamping block (503) and the inner clamping arc block (504) are connected through the buffer spring (505), the upper end of the inner side between the front and the rear outer clamping blocks (503) is connected with a telescopic rod (506).

6. The picking device for the watermelons according to claim 5, wherein a first hinged seat (508) is fixedly connected to the front side and the rear side of the long plate (502), the upper end of the outer clamping block (503) is inserted into the first hinged seat (508) and is rotatably connected with the first hinged seat (508), a second hinged seat (509) is fixedly connected to the upper end of the inner side of the outer clamping block (503), and the upper end of the inner clamping arc block (504) is inserted into the second hinged seat (509) and is rotatably connected with the second hinged seat (509).

7. The watermelon picking device according to claim 1, wherein universal wheels (8) are installed at the lower end of the movable frame (1), the front ends of the left side and the right side of the movable frame (1) are fixedly connected with supporting handles (9), the upper end of the movable frame (1) is provided with a rechargeable battery pack (10), and the upper end of each supporting handle (9) is provided with a control button (11).