Electromagnetic excitation based percussion type walnut picking machine

Abstract

The application discloses an electromagnetic-excitation-based impact type walnut picking machine, which comprises an electric double-wheel handcart, a support stand component, a control lever component arranged at the top end of the support stand component and an electromagnetic-excitation-based impact mechanism arranged at the free end of the control lever component. The electromagnetic-excitation-based impact mechanism comprises a positioning hook, a convex connecting plate arranged at the tail end of the positioning hook and two push-pull electromagnets arranged at the back of the convex connecting plate. The two push-pull electromagnets are connected with electromagnetic push-pull bidirectional impact components at the two ends. The electromagnetic push-pull bidirectional impact components impact the walnut tree branches in two directions with the extension and contraction of the push-pull electromagnets. The free end of the control lever component is connected with the back of the convex surface of the convex connecting plate. The one-time power-on operation program of the push-pull electromagnet can be executed twice (forward and reverse) to save the walnut picking time and accelerate the picking efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of walnut picking machines, and particularly relates to an impact type walnut picking machine based on electromagnetic excitation. BACKGROUND

[0002] Since the fruits of walnuts are hung on walnut trees, the traditional method generally includes artificial climbing on the walnut trees for picking and picking by a picking machine, the method of artificial climbing on the walnut trees for picking not only has certain danger, but also the growth of walnuts is unevenly distributed, different picking positions need to be changed during picking, resulting in low efficiency of walnut picking and high fruit damage rate; the impact part of the picking device on the market relying on the picking machine generally is a motor driven crank or cam mechanism to realize reciprocating movement of an executing mechanism, so as to realize a shaking effect, the scheme has complex structure and heavy equipment quality, and during work, the executing mechanism is lifted to a corresponding position by manpower, so labor intensity is large; meanwhile, a large number of impact times are needed each time to make the walnuts fall, a large amount of impact time is increased, and efficiency is low.

[0003] Through retrieval, a patent with the publication number CN103563566A, an impact type walnut picking machine, is found, which comprises a rigid rod, an impact device, a transmission system, a power device for driving the impact device to impact the walnut tree through the transmission system, a controller for controlling the power device and the output shaft speed, and a clamping device for clamping on the walnut tree; the controller is connected with the control end of the power device, the output shaft of the power device is connected with the driver of the impact device through the transmission system, and the impact device and the clamping device are fixed on the rigid rod.

[0004] The cited patent document also has the same problem, a large number of impact times are needed each time to make the walnuts fall, a large amount of impact time is increased, and efficiency is low. SUMMARY

[0005] The application aims to provide an impact type walnut picking machine based on electromagnetic excitation to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: an impact type walnut picking machine based on electromagnetic excitation, comprising:

[0007] An electric double-wheel handcart is moved to the side of the walnut tree to be impacted;

[0008] A support column assembly is fixedly installed on the electric double-wheel handcart, and a control rod part is arranged at the top end;

[0009] A control rod holding assembly is connected to the tail end of the control rod part;

[0010] The electromagnetic excitation type impact mechanism is installed at the free end of the operating lever component;

[0011] The electromagnetic excitation type impact mechanism comprises a positioning hook, a convex connecting plate installed at the tail end of the positioning hook, and two push-pull electromagnets installed at the back of the convex connecting plate.

[0012] The two push-pull electromagnets are connected with electromagnetic push-pull bidirectional impact assemblies at the head and tail ends, the electromagnetic push-pull bidirectional impact assemblies bidirectionally impact on the walnut tree branches with the forward extension and backward contraction of the push-pull electromagnets, and the free end of the operating lever component is connected with the back of the convex surface of the convex connecting plate.

[0013] Preferably, the electromagnetic push-pull bidirectional impact assemblies comprise a balanced forward impact push plate installed at the head end of the two push-pull electromagnets, and a T-shaped vertical plate installed at the tail end of the two push-pull electromagnets.

[0014] An inverted L-shaped reverse impact push plate is installed on the top surface of the T-shaped vertical plate.

[0015] Preferably, the head end of each of the two push-pull electromagnets is provided with a telescopic push rod, and the tail end of each of the two push-pull electromagnets is provided with a telescopic pull rod.

[0016] The telescopic pull rod is provided with a compression spring on the circumferential side.

[0017] Preferably, the free end of each of the two telescopic push rods is fixedly installed on the back of the balanced forward impact push plate, and the free end of each of the two telescopic pull rods is fixedly installed on the inner wall of the T-shaped vertical plate.

[0018] Preferably, the inner wall of the balanced forward impact push plate is installed with a forward impact clamping plate, and the longitudinal inner wall of the L-shaped reverse impact push plate is installed with a reverse impact clamping plate.

[0019] The opposite surfaces of the forward impact clamping plate and the reverse impact clamping plate are both provided with arc-shaped grooves matched with the impact of the walnut tree branches.

[0020] Preferably, the back of the balanced forward impact push plate is welded with a reverse support stress plate, and the reverse support stress plate has a reverse stress inner groove in the middle.

[0021] Preferably, the support column assembly comprises a telescopic column, a U-shaped rod installed at the top end of the telescopic column, a limiting cross bar installed at the top of the U-shaped rod, and a double-hole lifting ring lifted by a chain on the limiting cross bar.

[0022] Preferably, the operating lever component comprises a handheld section, a telescopic section installed at the free end of the handheld section, and a terminal section installed at the free end of the telescopic section.

[0023] Preferably, the telescopic section is connected with the lower and upper limiting rings respectively at one end of the hand-held section.

[0024] The double-hole lifting ring is in contact with the lower limiting ring on one side close to the hand-held section, and in contact with the upper limiting ring on the other side close to the end section.

[0025] Preferably, the electric two-wheel handcart comprises a support panel for mounting the support column assembly, wheels connected through a hub support, and an electromagnet controller and a battery compartment mounted on the bottom surface of the support panel.

[0026] Compared with the prior art, the technical effects and advantages of the present application are as follows:

[0027] The impact type walnut picking machine based on electromagnetic excitation is driven by the electric handcart to move the picking device, thereby reducing the labor intensity of workers when going uphill and working.

[0028] The present application uses an electric two-wheel handcart as a transport and support device for the picking device, which can significantly reduce the labor intensity of the operator when working in hilly areas compared with the direct lifting of the picking rod in a backpack structure.

[0029] The positioning hook is erected on the walnut tree branch, two push-pull electromagnets are opened, and the two push-pull electromagnets are synchronously driven to extend the two telescopic push rods to push the balanced forward impact push plate to impact the walnut tree branch. After one impact, the two push-pull electromagnets perform retraction operation, drive the two telescopic pull rods to retract, drive the T-shaped vertical plate and the L-shaped reverse impact push plate to retreat in the retraction process, so that the L-shaped reverse impact push plate can impact the walnut tree branch again in the reverse direction when the telescopic pull rod is retracted to the position, so that the one-time energization operation program of the push-pull electromagnet can perform two times (forward and reverse) of impact, and the impact forces applied are opposite, so that the amplitude of the two-way swing of the walnut tree branch is increased, which is helpful for the picking of walnuts, and a smaller impact can obtain a larger walnut picking amount, saving walnut picking time and accelerating picking efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0031] Figure 1 The walnut picking machine picking state structure diagram of the present application;

[0032] Figure 2 The overall structure diagram of the impact type walnut picking machine based on electromagnetic excitation of the present application;

[0033] Figure 3 The structure diagram of the electromagnetic push-pull two-way impact assembly of the present application;

[0034] Figure 4 The structure diagram of the two push-pull electromagnets of the present application;

[0035] Figure 5 The split state structure diagram of the T-shaped vertical plate and the L-shaped reverse impact push plate of the present application;

[0036] Figure 6 The structure diagram of the support column assembly of the present application;

[0037] Figure 7 The structure diagram of the electric double-wheel handcart of the present application;

[0038] Figure 8 The structure diagram of the joystick component of the present application.

[0039] Explanation of the drawings:

[0040] Figure: 1, electromagnetic excitation type impact mechanism; 2, joystick part; 3, support column assembly; 4, joystick holding assembly; 5, electric double-wheel trolley; 6, positioning hook; 7, balanced forward impact push plate; 8, convex connecting plate; 9, push-pull electromagnet part; 10, end section; 11, limiting cross bar; 12, chain; 13, double-hole lifting ring; 14, telescopic column; 15, transmission box; 16, support base; 17, wire harness collection disc; 18, support panel; 19, electromagnet controller; 20, power source; 21, battery compartment; 22, hand-tightened nut; 23, hub support; 24, lower limiting ring; 25, upper limiting ring; 26, telescopic section; 27, walnut branch; 28, handheld section; 29, connecting plate part; 30, T-shaped vertical plate; 31, L-shaped reverse impact push plate; 32, reverse impact clamping plate; 33, electromagnetic push-pull bidirectional impact assembly; 34, telescopic push rod part; 35, reverse support stress plate; 36, reverse stress inner groove; 37, forward impact clamping plate; 38, telescopic pull rod part; 39, compression spring; 40, arc-shaped groove; 41, inner threaded hole; 42, locking bolt; 43, support rib plate. DETAILED DESCRIPTION

[0041] In the following description, numerous specific details are given to provide a thorough understanding of the application. However, it will be apparent that the application can be practiced without one or more of the specific details. In other instances, well-known techniques are not described in detail in order to avoid obscuring the application.

[0042] Unless specifically defined otherwise, the terms "upper," "lower," "left," "right," "forward," "backward," "inner," and "outer" and the like, as used herein, refer to the orientation of the figures shown in the drawings in which the application is illustrated.

[0043] The embodiment discloses a walnut picking machine based on electromagnetic excitation impact type for picking first and second level branches of walnut trees, as shown in Figures 1 to 8 application, comprising an electric double-wheel trolley 5, a support column assembly 3, a joystick part 2, a joystick holding assembly 4, and an electromagnetic excitation type impact mechanism 1.

[0044] Among them;

[0045] In this embodiment, the electrically powered trolley 5 is moved to the side of the walnut tree to be impacted, and the support panel 18 of the electrically powered trolley 5 is fixedly connected with the support base 16 of the support column assembly 3, the support base 16 is fixedly installed on the top surface of the support panel 18 by means of bolts, the electrically powered trolley 5 comprises the support panel 18 for installing the support column assembly 3, the wheels connected by means of the hub supports 23, and the electromagnet controller 19 and the battery compartment 21 installed on the bottom surface of the support panel 18, the power source 20 is fixedly installed between the hub supports 23 on both sides by means of bolts, and more than two wire harness collecting discs 17 are installed on one side of the top surface of the support panel 18 by means of screws, the wire harness wound on the wire harness collecting disc 17 is connected with the electromagnetic excitation type impacting mechanism 1. The upper end surface of the wire harness collecting disc 17 is in contact with the hand screw nut 22, and the wire harness collecting disc 17 and the hand screw nut 22 are movably connected. The support panel 18 is threadedly connected with the hand screw nut 22. By using the electrically powered trolley, the picking device is moved, and the labor intensity of the worker when going up the mountain and working is reduced. In addition, since the impacting device is powered by the power source of the trolley, the complexity of the device is reduced, and the weight of the device is reduced. The PLC for controlling the opening and closing of each device is arranged on the bottom surface of the support panel 18, and the type of the PLC can be selected according to actual needs.

[0046] In this embodiment, the support column assembly 3 is fixedly installed on the electrically powered trolley 5, and the top end is provided with the operating rod part 2, the support column assembly 3 comprises the telescopic column 14, the U-shaped rod installed at the top end of the telescopic column 14, the limiting cross rod 11 installed at the top of the U-shaped rod, and the double-hole lifting ring 13 hung on the limiting cross rod 11 by means of the chain 12, and the bottom of the telescopic column 14 is fixedly provided with the support base 16 by means of bolts, the support base 16 is composed of a column and three support prongs welded in an annular array on the circumferential side of the bottom of the column, wherein the telescopic column 14 and the support base 16 are coaxial, and are movably connected by means of the gear set in the transmission box 15; the limiting cross rod 11 is fixedly connected with the chain 12, the chain 12 is movably connected with the small hole of the double-hole lifting ring 13; and the large hole of the double-hole lifting ring 13 is movably connected with the outermost layer of the telescopic section 26 of the operating rod 2.

[0047] In the embodiment, the operating rod component 2 comprises a handheld section 28, a telescopic section 26 mounted at the free end of the handheld section 28, and a terminal section 10 mounted at the free end of the telescopic section 26. The telescopic section 26 is connected with a lower limiting ring 24 and an upper limiting ring 25 at the side near the one end of the handheld section 28, respectively. The double-hole hanging ring 13 is in contact with the lower limiting ring 24 at the side near the handheld section 28, and in contact with the upper limiting ring 25 at the side near the terminal section 10. The handheld section 28 is fixedly connected with the one end of the telescopic section 26 through a flange, and the other end of the telescopic section 26 and the terminal section 10 are connected through a flange. The weight of the picking rod is transferred to the vehicle through the support on the trolley as the support point of the picking rod, and the weight of the actuator is transferred to the vehicle through the support column arranged on the trolley. In addition, the whole picking rod is hung on the support column, so that the picking rod can be flexibly operated.

[0048] In the embodiment, the operating rod holding assembly 4 is connected at the tail end of the operating rod component 2, and the operating rod holding assembly 4 comprises the handheld section 28 which is in a T-shaped structure, so as to facilitate the handheld operation of the operator and improve the operation convenience.

[0049] In the embodiment, the electromagnetic excitation type impact mechanism 1 is mounted at the free end of the operating rod component 2, and the electromagnetic excitation type impact mechanism 1 comprises the positioning hook 6, the convex connecting plate 8 mounted at the tail end of the positioning hook 6, and two push-pull electromagnets 9 mounted at the back of the convex connecting plate 8. The convex connecting plate 8 is in a horizontal convex structure, and the positioning hook 6 comprises an inverted U-shaped rod and a connecting plate 29 integrally formed at one end of the U-shaped rod. The connecting plate 29 is fixedly connected with the convex surface of the convex connecting plate 8 through a bolt, that is, the positioning hook 6 is fixed on the convex connecting plate 8. The terminal section 10 of the operating rod component 2 is connected with the back of the convex surface of the convex connecting plate 8.

[0050] In this embodiment, the two push-pull electromagnets 9 are connected at the two ends with electromagnetic push-pull bidirectional impact components 33. The electromagnetic push-pull bidirectional impact components 33 impact the walnut tree branches 27 in two directions as the push-pull electromagnets 9 advance and retract. The free end of the joystick component 2 is connected to the back of the convex surface of the convex connecting plate 8. The electromagnetic push-pull bidirectional impact components 33 include a balanced forward impact push plate 7 installed at the front end of the two push-pull electromagnets 9, a T-shaped vertical plate 30 installed at the tail end of the two push-pull electromagnets 9, and an inverted L-shaped reverse impact push plate 31 installed on the top surface of the T-shaped vertical plate 30. The front end of each of the two push-pull electromagnets 9 is provided with a telescopic push rod 34, and the tail end of each of the two push-pull electromagnets 9 is provided with a telescopic pull rod 38. The telescopic pull rod 38 is provided with a compression spring 39 on the side. The compression spring 39 helps reset the telescopic pull rod 38. The free end of each of the two telescopic push rods 34 is fixedly installed on the back of the balanced forward impact push plate 7. The free end of each of the two telescopic pull rods 38 is fixedly installed on the inner wall of the T-shaped vertical plate 30.

[0051] In this embodiment, when impacting, the positioning hook 6 is erected on the walnut tree branches 27, and the two push-pull electromagnets 9 are turned on. After the two push-pull electromagnets 9 are powered on, the two telescopic push rods 34 are synchronously driven to extend and push the balanced forward impact push plate 7 to impact the walnut tree branches 27. After one impact, the two push-pull electromagnets 9 retract, driving the two telescopic pull rods 38 to retract. During the retraction, the T-shaped vertical plate 30 and the L-shaped reverse impact push plate 31 are withdrawn, so that when the telescopic pull rod 38 is retracted in place, the L-shaped reverse impact push plate 31 will impact the walnut tree branches 27 again in the reverse direction, so that the one-time power-on operation program of the push-pull electromagnets 9 can perform two impacts (forward and reverse), and the impact forces in opposite directions are applied, so that the amplitude of the bidirectional swinging of the walnut tree branches 27 is increased, which helps to pick walnuts. A smaller number of impacts can obtain a larger amount of walnut picking, saving walnut picking time and speeding up picking efficiency. At the same time, the small-mass and large-thrust push-pull electromagnets are used as the power equipment of the impact device, which greatly reduces the overall weight of the impact device.

[0052] In this embodiment, the inner wall of the balanced forward impact push plate 7 is provided with a forward impact clamping plate 37, and the longitudinal inner wall of the L-shaped reverse impact push plate 31 is provided with a reverse impact clamping plate 32. The middle of the opposite side of the forward impact clamping plate 37 and the reverse impact clamping plate 32 is provided with an arc-shaped groove 40 that matches the impact of the walnut tree branches 27.

[0053] In this embodiment, the forward impact clamping plate 37 and the reverse impact clamping plate 32 can exactly match on the walnut tree branch 27, so as to prevent dislocation from occurring during impact, causing the positioning hook 6 to fall off, improve the stability of the device, and the design of the arc-shaped groove 40 can increase the contact area with the walnut tree branch 27, increase the stress area, and further improve the efficiency and quality of the impact.

[0054] In this embodiment, the back of the balanced forward impact push plate 7 is welded with a reverse support stress plate 35, and the middle of the reverse support stress plate 35 has a reverse stress inner groove 36.

[0055] In this embodiment, the reverse support stress plate 35 and the reverse stress inner groove 36 can support the balanced forward impact push plate 7, prevent the balanced forward impact push plate 7 from breaking when stressed, and improve the service life.

[0056] In this embodiment, a plurality of internal thread holes 41 are symmetrically provided on the top surface of the T-shaped vertical plate 30 and the L-shaped reverse impact push plate 31, when the horizontal plate of the L-shaped reverse impact push plate 31 is attached to the T-shaped vertical plate 30, the L-shaped reverse impact push plate 31 is fixedly connected with the T-shaped vertical plate 30 through locking bolts 42, and two support rib plates 43 are symmetrically welded at the bottom of the T-shaped vertical plate 30.

[0057] Working principle

[0058] The impact type walnut picking machine based on electromagnetic excitation reduces the labor intensity of workers when going up the mountain and working by using an electric cart to drive the picking device to move. In addition, the complexity of the device is reduced by supplying power to the impact device through the power supply of the cart. The device is moved to the walnut tree to be picked, the positioning hook 6 is erected on the walnut tree branch 27 through the handheld section 28 of the handheld joystick component 2, the two push-pull electromagnets 9 are opened, and the two push-pull electromagnets 9 drive the two telescopic push rod components 34 to extend and push the balanced forward impact push plate 7 to impact the walnut tree branch 27 after being electrified. After one impact, the two push-pull electromagnets 9 perform retraction operation, driving the two telescopic pull rod components 38 to retract, and the T-shaped vertical plate 30 and the L-shaped reverse impact push plate 31 are withdrawn during the retraction process, so that when the telescopic pull rod component 38 is retracted in place, the L-shaped reverse impact push plate 31 will impact the walnut tree branch 27 again in the reverse direction. The forward impact clamping plate 37 and the reverse impact clamping plate 32 can continuously impact the walnut tree branch 27, thereby increasing the impact frequency and making the walnut fruits on the walnut tree branch 27 vibrate more. When the binding force between the walnut fruits and the branch is less than the force suffered by the walnut when it shakes, the fruits fall off the branch, thereby completing the picking.

[0059] It has to be noted that, in the present document, the terms "comprising", "including", and "having" should be interpreted as specifying the presence of the stated features but not precluding the presence of one or more other features. It should also be noted that, in the present document, the term "or" should be interpreted as the logical or, i.e. requiring at least one of the presented options to be true.

[0060] While the embodiments of the application have been shown and described, it is to be understood that the embodiments described are only by way of example and are not limiting of the scope of the application. Changes, modifications, substitutions and variations can be made to the embodiments without departing from the spirit of the present application, which is defined by the scope of the following claims and their equivalents.

Claims

1. An electromagnetic excitation based impact type walnut picking machine, characterized by, It comprises: An electrically-powered two-wheeled handcart (5) is moved to the side of the walnut tree to be hit; A supporting column assembly (3) is fixedly installed on the electrically-powered two-wheeled handcart (5) and has a top end of the operating lever component (2) erected thereon; An operating lever holding assembly (4) is connected to the tail end of the operating lever component (2); An electromagnetically-energized hitting mechanism (1) is installed at the free end of the operating lever component (2); The electromagnetically-energized hitting mechanism (1) comprises a positioning hook (6), a convex connecting plate (8) installed at the tail end of the positioning hook (6), and two push-pull electromagnets (9) installed at the back of the convex connecting plate (8); The head and tail ends of the two push-pull electromagnets (9) are connected with an electromagnetically-energized push-pull bidirectional hitting assembly (33), which hits the walnut tree trunk (27) in two directions with the forward extension and backward contraction of the push-pull electromagnets (9), and the free end of the operating lever component (2) is connected with the back of the convex surface of the convex connecting plate (8).

2. A nut harvesting machine based on electromagnetic excitation, according to claim 1, characterized in that: The electromagnetically-energized push-pull bidirectional hitting assembly (33) comprises a balanced forward hitting push plate (7) installed at the head end of the two push-pull electromagnets (9), a T-shaped vertical plate (30) installed at the tail end of the two push-pull electromagnets (9), and an inverted L-shaped reverse hitting push plate (31) installed at the top surface of the T-shaped vertical plate (30).

3. A nut harvesting machine based on electromagnetic excitation, according to claim 2, characterized in that: The head end of each of the two push-pull electromagnets (9) is provided with a telescopic push rod (34), and the tail end of each of the two push-pull electromagnets (9) is provided with a telescopic pull rod (38); The telescopic pull rod (38) is provided with a compression spring (39) on the circumferential side thereof.

4. A nut harvesting machine based on electromagnetic excitation, according to claim 3, characterized in that: The free end of each of the two telescopic push rods (34) is fixedly installed on the back of the balanced forward hitting push plate (7), and the free end of each of the two telescopic pull rods (38) is fixedly installed on the inner wall of the T-shaped vertical plate (30).

5. An electromagnetic impulse based impact walnut picker as claimed in claim 4, characterized in that: The inner wall of the balanced forward hitting push plate (7) is installed with a forward hitting clamping plate (37), and the longitudinal inner wall of the L-shaped reverse hitting push plate (31) is installed with a reverse hitting clamping plate (32); The opposite surfaces of the forward hitting clamping plate (37) and the reverse hitting clamping plate (32) are each provided with an arc-shaped groove (40) matching the hitting of the walnut tree trunk (27).

6. An electromagnetic impulse based impact walnut picker as claimed in claim 5, characterized in that: The back of the balanced forward hitting push plate (7) is welded with a reverse supporting stress plate (35), and the middle of the reverse supporting stress plate (35) has a reverse stress inner groove (36).

7. An electromagnetic impulse based impact walnut picker as claimed in claim 6, characterized in that: The supporting column assembly (3) comprises a telescopic column (14), a U-shaped lever installed at the top end of the telescopic column (14), a limiting cross bar (11) installed at the top of the U-shaped lever, and a double-hole lifting ring (13) hung on the limiting cross bar (11) through a chain (12).

8. An electromagnetic impulse based impact walnut picker as claimed in claim 7, characterized in that: The operating lever component (2) comprises a hand-held section (28), a telescopic section (26) installed at the free end of the hand-held section (28), and a terminal section (10) installed at the free end of the telescopic section (26).

9. An electromagnetic impulse based impact walnut picker as claimed in claim 8, characterized in that: The circumferential side of one end of the telescopic section (26) close to the hand-held section (28) is respectively connected with a limiting ring lower (24) and a limiting ring upper (25) connected with the double-hole lifting ring (13); The double-hole lifting ring (13) is in contact with the lower limiting ring (24) on one side close to the handheld section (28), and is in contact with the upper limiting ring (25) on the other side close to the end section (10).

10. A nut harvesting machine based on electromagnetic excitation, according to claim 1, characterized in that: The electric double-wheel handcart (5) comprises a support panel (18) for mounting the support column assembly (3), wheels connected through a hub support (23), and an electromagnet controller (19) and a battery compartment (21) mounted on the bottom surface of the support panel (18).

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