Working mechanism for uniformly throwing feed and method thereof

Abstract

The invention provides a working mechanism for uniformly throwing feed and a method thereof, and relates to the technical field of feed throwing, and the working mechanism comprises a lead screw lifting mechanism and a feed throwing device. The lead screw lifting mechanism is composed of a lead screw motor, a rail, a conical disc and an upper pull disc, the conical disc is driven by the lead screw motor to slide along the rail, and accurate lifting and conveying of feed are achieved. The feed throwing device is composed of a driving disc and a bottom disc, the driving disc drives the bottom disc to rotate in a reciprocating mode through a rotating motor, and quantitative throwing and uniform distribution of feed are achieved through a curve notch and a multi-stage ejection structure. Feed is lifted through the lead screw mechanism, the throwing strength is adjusted in combination with the curve groove and the spring, a design method for fixing the position of the pin is provided, multi-stage ejection throwing of the feed is achieved, the device has the advantages of being simplified in structure, accurate in throwing range control, uniform in throwing, high in adaptability and high in stability, the throwing requirements of different ponds can be met, and the device is suitable for popularization and application. Feed utilization rate is increased; and waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of feed delivery, in particular to a working mechanism and a method for evenly spreading feed. Background Art

[0002] At present, pond feed delivery devices are usually driven by multiple motors, and feed delivery and spreading mechanisms are controlled separately to achieve automatic feed delivery. This type of device usually relies on a rotary or centrifugal spreading disc when spreading feed, and the motor drives the disc to rotate, so that the feed is evenly spread into the pond. This structure is relatively common, but there are problems such as complex equipment, high manufacturing cost, and difficult operation. At the same time, since the actions between multiple motors need to be highly coordinated, once a motor fails, it is easy to cause the entire device to stop running, affecting the stability and reliability of the equipment.

[0003] In the process of throwing feed, existing devices usually control the direction and range of feed delivery through a fixed rotating mechanism or a simple adjustment of the throwing angle. In actual applications, this method is often difficult to accurately control the throwing range, especially in large ponds, where feed distribution is prone to unevenness. In addition, the existing technology cannot flexibly adjust the throwing range according to the size or shape of the pond, resulting in feed waste in some areas and insufficient supply in other areas, thus affecting the normal feeding of fish.

[0004] Although spring compression force control technology has been applied in other fields, it has not yet been matured in pond feed delivery devices. The existing technology lacks precise control methods for the force and distance of feed delivery, especially when multi-level delivery and coverage of different areas are required, the adjustment capacity of the existing devices is limited. In addition, the mechanical design of traditional devices is relatively simple and cannot flexibly adapt to the needs of ponds of different sizes or shapes, further limiting the practicality of the equipment.

[0005] In summary, the existing pond feed delivery device still has a lot of room for improvement in terms of structural simplification, equipment stability, delivery range control and adaptability. Summary of the invention

[0006] In order to solve the technical problems in the prior art, the present invention provides a working mechanism and method for uniformly spreading feed.

[0007] The technical solution provided by the present invention is as follows:

[0008] First aspect:

[0009] The present invention provides a working mechanism for uniformly spreading feed, comprising:

[0010] It includes a screw lifting mechanism and a feed throwing device, and is characterized by:

[0011] The screw lifting mechanism includes a screw motor, a track, an upper pull-up disk and a conical disk, the screw motor is fixedly arranged vertically downward on the lower end surface of the partition and is surrounded by a vertically downward track, the conical disk is slidably arranged on the track, the screw of the screw motor is fixedly connected to the center of the conical disk, the lower end surface of the conical disk is fixedly connected to the upper pull-up disk through a plurality of copper columns near the edge, a gap equal to the length of the copper column is provided between the conical disk and the upper pull-up disk, the gap can accommodate feed passing through, a circular hole is provided at the center of the upper pull-up disk, the outer circle of the upper pull-up disk is fixedly connected to the storage box, and the storage box is used to temporarily store feed;

[0012] The feed throwing device includes an active disk and a chassis, wherein the active disk is provided with a plurality of curved slots, wherein the curved slots are provided around the center of the active disk, a fixed pin is fixedly provided on the lower end surface of the active disk, and a group of the fixed pins is provided between each of the curved slots, wherein each group includes one or more fixed pins and has different distances from the center of the active disk, a partition is provided at the center of the chassis, a rotating motor is provided on the upper end surface of the partition, and the rotating motor is fixedly connected to the center of the active disk to enable the chassis to perform reciprocating rotational motion, and a plurality of hollow feed ports are provided on the lower end surface of the chassis around the center of the circle, wherein the The outer circular surface of the chassis is provided with a plurality of hollow discharge ports, and the feed ports correspond to positions with the same number as the discharge ports. The upper end surface of the chassis is provided with a slide groove, and the slide groove corresponds to the feed port one-to-one. A push block is slidably provided on the slide groove, and a movable pin passing through the curved groove is fixedly provided above the push block. A guide shaft is fixedly provided at one end of the push block away from the center of the chassis, and a spring is provided outside the guide shaft. One end of the spring is fixedly connected to the push block, and the other end is fixedly connected to a spring block. A circular hole for the guide shaft to pass through is provided in the center of the spring block, and the positions of the spring block and the discharge port correspond one-to-one.

[0013] Furthermore, it also includes a spiral feeding mechanism, which includes a screw, a base, a feeding pipe and a feeding motor. The lower end of the screw is connected to the bottom motor and is driven to rotate by the feeding motor. A base is provided on the plane where the bottom motor and the screw are connected. The base is provided on the bottom surface of the pond. The feeding motor is provided below the bottom surface of the pond. The upper end of the screw is located below the conical disk. The outer surround of the screw includes a feeding barrel. The two ends of the feeding pipe are at different heights. The lower part of the feeding barrel is connected to the lower end of the feeding pipe, and the higher end of the feeding pipe is located on the shore and connected to the shore feeding bin.

[0014] Furthermore, the base is a sealed box that wraps the lower motor and is used to protect the dry working environment of the feeding motor.

[0015] Furthermore, the outlet at the lower end of the feed pipe is arranged above the spiral groove of the screw, so that the feed falls on the spiral groove after passing through the feed pipe.

[0016] Furthermore, the underwater parts of the loading barrel are all sealed.

[0017] Furthermore, the limit of the reciprocating motion of the active disk is the limit of the motion of the movable pin fixedly arranged on the push block at both ends of the curved notch.

[0018] Furthermore, the fixed pins fixedly arranged on the lower end surface of the active disk limit the position of the spring block while not contacting the chassis.

[0019] Second aspect:

[0020] The present invention provides a method for uniformly spreading feed, comprising:

[0021] S1. Establish the motion trajectory relationship equation: According to the principle of relative motion, by assuming that the active disk is stationary and the chassis is rotating, the initial angular velocity provided by the active disk is equivalent to the initial angular velocity of the spring shaft on the chassis, and then the arc motion equation of the curved slot is converted into the linear motion equation of the spring shaft to simplify the calculation. The linear and arc equations are both in polar coordinate form;

[0022] S2. Calculation of the position of the fixed pin: Calculate the initial velocity required for throwing the feed. Based on the shape and known parameters of the pond, assume that the feed is in an ideal horizontal throwing motion, and use the formula to determine the initial velocity value. According to the requirement of increasing the initial velocity step by step, calculate the compression amount and corresponding speed of the springs of different levels to ensure that the feed is evenly distributed. Determine the specific position coordinates of the fixed pin by calculating the distance between the end of the spring and the specific point and using the kinematic relationship.

[0023] The beneficial effects brought about by the technical solution provided by the present invention include at least:

[0024] (1) In the present invention, the displacement change of the fixed pin is used to control the compression amount of the spring to form a multi-stage ejection mechanism. This design can accurately adjust the ejection force according to the position of the fixed pin, so that the feed can be evenly thrown to various areas of the pond, which significantly improves the uniformity of feed distribution and solves the problem of uneven feed distribution in the prior art;

[0025] (2) In the present invention, the compression amount of the spring can be flexibly changed by adjusting the distance between the fixed pins, thereby controlling the distance of the feed being thrown. This technology can adapt to the needs of ponds of different sizes and shapes, realize customized settings of the delivery range, and solve the problem of insufficient flexibility of traditional devices in different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of a working mechanism for uniform feed spreading provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the partial structure of a working mechanism for uniform feed spreading provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the structure around an upper pull plate of a working mechanism for uniform feed throwing provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the internal structure of a chassis of a working mechanism for uniform feed spreading provided by an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the structure of an active disk of a working mechanism for uniform feed spreading provided by an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the internal structure of an active disk of a working mechanism for uniform feed spreading provided by an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the initial position of a method for uniformly spreading feed provided by an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of tangent positions of a method for uniformly spreading feed provided by an embodiment of the present invention;

[0035] Fig. 9 A schematic diagram of the positions of n-level fixed pins in a method for uniformly spreading feed provided by an embodiment of the present invention;

[0036] Fig.10 A schematic diagram of the intersection position of a spring and a curved notch in a method for uniform feed spreading provided by an embodiment of the present invention.

[0037] In the figure: 11, shore feed bin; 12, feed pipe; 21, feeding motor; 22, base; 23, screw; 24, partition; 25, storage box; 31, pull-up plate; 32, copper column; 33, conical plate; 34, track; 35, screw motor; 41, active plate; 42, chassis; 43, discharge port; 44, feed port; 45, slide; 46, push block; 47, moving pin; 48, guide shaft; 49, spring block; 51, spring; 52, rotating motor; 53, fixed pin; 54, curved notch; 55, fixed pin spring. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0039] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0040] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0041] Reference Manual Attached Figure 1-6 , showing a structural schematic diagram of a working mechanism and method for uniform feed spreading provided by an embodiment of the present invention.

[0042] The embodiment of the present invention provides a working mechanism and method for uniformly spreading feed, including:

[0043] The screw lifting mechanism includes a screw motor 35, a track 34, an upper pull-up disk 31 and a conical disk 33. The screw motor 35 is fixedly arranged vertically downward on the lower end surface of the partition 24 and is surrounded by a vertically downward track 34. The conical disk 33 is slidably arranged on the track 34. The screw of the screw motor 35 is fixedly connected to the center of the conical disk 33. The lower end surface of the conical disk 33 is fixedly connected to the upper pull-up disk 31 through a plurality of copper pillars 32 near the edge. There is a gap between the conical disk 33 and the upper pull-up disk 31 that is equal to the length of the copper pillar 32. The gap can accommodate feed passing through. A circular hole is opened at the center of the upper pull-up disk 31. The outer circle of the upper pull-up disk 31 is fixedly connected to the storage box 25. The storage box 25 is used to temporarily store feed.

[0044] The feed throwing device includes an active disk 41 and a chassis 42. The active disk 41 is provided with a plurality of curved slots 54, which are provided around the center of the active disk 41. A fixed pin 53 is fixedly provided on the lower end surface of the active disk 41. The fixed pin 53 is fixedly connected to a fixed pin spring 55. The other end of the fixed pin spring 55 is fixed in the cylindrical hole of the active disk 41. One side of the lower end of the fixed pin 53 is a curved surface, and the other side is a flat surface. The flat surface part contacts the spring block 49. A group of fixed pins 53 is provided between each curved slot 54. Each group includes one or more fixed pins 53 and has different distances from the center of the active disk 41. A partition 24 is provided at the center of the chassis 42. A rotating motor 52 is provided on the upper end surface of the partition 24. The rotating motor 52 is fixedly connected to the center of the active disk 41 to make the chassis 42 The chassis 42 performs reciprocating rotational motion, and a plurality of hollow feed ports 44 are provided on the lower end surface around the center of the circle, and a plurality of hollow discharge ports 43 are provided on the outer circumferential surface of the chassis 42. The feed ports 44 and the discharge ports 43 have the same number of corresponding positions. A slide groove 45 is provided on the upper end surface of the chassis 42, and the slide groove 45 and the feed ports 44 correspond one to one. A push block 46 is slidably provided on the slide groove 45, and a movable pin 47 passing through the curved groove 54 is fixedly provided above the push block 46. A guide shaft 48 is fixedly provided at one end of the push block 46 away from the center of the circle of the chassis 42, and a spring 51 is provided on the outer sleeve of the guide shaft 48. One end of the spring 51 is fixedly connected to the push block 46, and the other end is fixedly connected to a spring block 49. A circular hole for the guide shaft 48 to pass through is provided in the center of the spring block 49, and the positions of the spring block 49 and the discharge port 43 correspond one to one.

[0045] In a possible implementation, the push block 46 achieves a sliding effect with low resistance by being fixedly connected to the guide rail slider in the slide groove 45. Similarly, a similar means also includes arranging a ball in the slide groove 45 to achieve an effect of reducing resistance.

[0046] In a possible embodiment, it also includes a spiral feeding mechanism, which includes a screw 23, a base 22, a feed pipe 12 and a feeding motor 21. The lower end of the screw 23 is connected to the bottom motor and is driven to rotate by the feeding motor 21. The base 22 is provided on the plane where the bottom motor and the screw 23 are connected. The base 22 is provided on the bottom surface of the pond. The feeding motor 21 is provided below the bottom surface of the pond. The upper end of the screw 23 is located below the conical disk 33. The outer surrounding of the screw 23 includes a feeding barrel. The two ends of the feed pipe 12 are at different heights. The lower part of the feeding barrel is connected to the lower end of the feed pipe 12. The higher end of the feed pipe 12 is located on the shore and is connected to the shore feed bin 11.

[0047] In a possible implementation, the base 22 is a sealed box that wraps the motor underneath and is used to protect the feeding motor 21 in a dry working environment.

[0048] In a possible implementation, the outlet at the lower end of the feed pipe 12 is disposed above the spiral groove of the screw 23 , so that the feed passes through the feed pipe 12 and falls onto the spiral groove.

[0049] In a possible implementation, the underwater parts of the loading bucket are all sealed.

[0050] In a possible implementation manner, the limit of the reciprocating motion of the active disk 41 is the limit of the motion of the movable pin 47 fixedly disposed on the push block 46 at both ends of the curved notch 54 .

[0051] In a possible implementation manner, the fixing pin 53 fixedly disposed on the lower end surface of the active disk 41 does not contact the chassis 42 while limiting the position of the spring block 49 .

[0052] When the above device is working, the shore feed bin 11 is filled with a sufficient amount of feed to be thrown, and the feed to be thrown is transported to the spiral groove of the screw 23 through the feed pipe 12 by gravity or other conventional conveying means. At this time, the feeding motor 21 works to rotate the screw 23, and then the feed to be thrown rises to the bottom of the conical disk 33. At this time, through the action of the screw motor 35, the conical disk 33 and the upper pull plate 31 are both fixed in the lower position. After the feed to be thrown rises and touches the conical disk 33, due to the extrusion of the lift and the inertial rebound, it passes through the gap between the conical disk 33 and the upper pull plate 31 separated by the copper column 32 and enters the upper pull plate 31 in the storage box 24. Then, through the operation of the screw motor 35, the upper pull plate 31 is driven to rise to the upper position along the track 34, so that the feed to be thrown passes through the feed port 44 opened below the chassis 42 and enters between the bullet block 49 and the discharge port 43. The space between the spring block 49 and the discharge port 43 is the space left by the rotating motor 52 when the active disk 41 is reciprocated, driving the movable pin 47 in the curved slot 54 and then driving the push block 46 to move along the slide groove 45 toward the discharge port 43, which is used to leave the push block 46 to move outward and temporarily store feed.

[0053] It should be noted that the push block 46 is fixedly connected to the spring 51 and the spring block 49, so when the push block 46 approaches the center of the chassis 42, it also drives the spring block 49 to move in the same manner. When the above-mentioned approaching movement reaches the limit, the movable pin 47 also moves to the limit of one end in the curved slot 54. At this time, the fixed pin 53 closest to the center of the active disk 41 in each group of fixed pins 53 fixed on the lower surface of the active disk 41 is blocked outside the corresponding spring block 49. After that, the active disk moves in the opposite direction, and the movable pin 47 also moves to the other end of the curved slot 54, thereby driving the spring block 49 to move in the direction away from the center of the chassis 42. However, due to the obstruction of the fixed pin 53, it cannot move outward, so that the spring 51 is compressed and stored. Due to the rotation of the active disk 41, the fixed pin 53 gradually leaves the outside of the bullet block 49, so that the spring 51 is released to push the bullet block 49 to pop out, and then the feed to be thrown outside the bullet block 49 is thrown out through the discharge port 43, and then the bullet block contacts the next pin, continues to be compressed and then ejected.

[0054] It should be noted that after the spring block 49 is ejected due to the separation of the fixing pin 53, it will not touch the second fixing pin 53, that is, the distance and position between the fixing pins 53 need to be obtained through specific calculations below.

[0055] It should be noted that the rotating motor 52 drives the active disk 41 to reverse, and the push block 46 retracts along the radial direction under the action of the curved groove 54. The spring block 49 will contact the curved end of the fixed pin 53, and the fixed pin 53 will compress the fixed pin spring 55, so that the spring block 49 will not stretch the spring.

[0056] Through the process that the elastic block 49 interacts with the fixed pins 53 from near to far in sequence and pops out, multi-level feed throwing with different elastic forces is completed, so that the present embodiment can evenly throw the feed to various places in the pond.

[0057] In order to make the feed be scattered according to the demand, the embodiment of the present invention also provides a uniform feed scattering method, which is applied to the calculation of the scattering position and the position of the fixed pin. The specific method is as follows:

[0058] During calculation, since the throwing structure in this embodiment is the same structure arranged around the center of the circle, only one repeated structure is used as the analysis model. First, the motion trajectory relationship equation of the spring shaft and the active disk needs to be established:

[0059] According to the principle of relative motion, when setting the motion equation, it is assumed that the active disk is stationary and the chassis where the spring shaft is located rotates. Then the initial angular velocity provided by the active disk is equivalent to the initial angular velocity of the spring shaft on the chassis. In this way, the calculation can be simplified by converting the arc motion equation of the curved slot into the linear motion equation of the spring shaft. When setting the linear and arc equations, polar coordinate equations are used to facilitate calculation.

[0060] like Figure 7 As shown, let the radius of the active disk be R, and it rotates around the axis O at a constant angular velocity of -ω0. As mentioned above, for the convenience of calculation, it is assumed that the active disk is stationary, and the axis where the spring is located rotates around the axis O at a constant angular velocity of ω0. θ is the angle between the spring axis and the positive direction of the x-axis, and ρ is the distance between the intersection of the spring axis and the curved slot and the origin of the coordinate position. The equation of the straight line can be set as:

[0061] y=kx

[0062] Convert from polar coordinates:

[0063]

[0064] Available

[0065] ρsinθ=kρcosθ

[0066] k = tanθ

[0067] Known

[0068] θ=θ0+w1t

[0069] Among them, is the angle between the straight line and the positive direction of the x-axis at t=0, then:

[0070] tan(θ0+w0t)=k

[0071] The coordinates of any point on the line are:

[0072] (ρ,θ0+w0t)

[0073] Then establish the polar coordinate expression of the curve slot:

[0074] Assume that the starting angle of the curved slot is α, the ending angle is β (rad), and the center of the curved slot is (α, b), then:

[0075]

[0076] Convert from polar coordinates

[0077]

[0078] Available

[0079]

[0080] After splitting

[0081]

[0082] Using sin 2 θ+cos 2 θ=1Simplifying, we get

[0083]

[0084] Then establish the expression of the intersection point A of the spring axis and the curved slot with respect to t:

[0085] The combined expressions of the straight line (spring axis) and the arc (curve notch) are:

[0086]

[0087] Solved

[0088]

[0089] That is the coordinate of point A.

[0090] The value of ρ is as follows:

[0091] like Figure 8 As shown, the straight line and the arc must have an intersection point, and ρ must have a real root. When ρ has a unique solution, denoted by ρ m , which is the point of tangency between the arc and the line.

[0092] Solved

[0093] ρ m =acos(θ0+w0t)+bsin(θ0+w0t)

[0094] When ρ<ρ m When ρ>ρ m When , ρ takes the larger value of the two real roots.

[0095] After that, the position of the fixed pin can be calculated. First, the required initial velocity needs to be calculated. Assuming that the pond is a circular pond with an area of That is, the maximum feed spreading area of ​​the device of this embodiment, it is known that the vertical height of the feed placement position from the pond is h, and the radius of the pond is R0.

[0096] Assuming that the feed performs ideal horizontal throwing motion, we have:

[0097]

[0098] In order to ensure that the feed is evenly distributed in the pond, the compression amount of the spring is increased step by step, so that the elastic potential energy increases step by step, thereby providing the feed with a gradually increasing initial velocity.

[0099] Assume that the compression amounts of the 1st, 2nd, 3rd, ..., nth-stage springs are Δx1, Δx2, Δx3, ..., Δx respectively. n The corresponding speed is

[0100] According to the kinetic energy theorem, W = ΔE k , we can get:

[0101]

[0102] like Fig. 9 As shown, assuming that the required series is the Nth series, then:

[0103]

[0104] Solved

[0105]

[0106] like Fig.10 As shown in the figure, when the farthest end of the block contacts the first fixed pin, let the distance between the moving pin of the block and the center of the circle be ρ1, θ0 is the initial angle between the spring axis and the positive semi-axis of x, and at the same time, let the distance between the moving pin and the center of the circle be ρ 1x Substituting the position coordinates into the following equation to obtain θ 1x :

[0107]

[0108] Then the distance between the fixed pin and the center of the circle is ρ 1x =ρ1+f

[0109] Obtain Δθ, and then obtain θ by θ0-Δθ 1x Then the polar coordinates of the first fixed pin are (ρ 1x ,θ 1x )

[0110] Assume that the distance of each change of the moving pin from the center of the circle is ρ N , the polar coordinate position of the fixed pin should be (ρ Nx ,θ Nx ), add the position coordinates of the initial point to the required compression of this level of spring to get ρ N =1.1(ρ N-1 +Δx N-1 ), then 1.1 is the safety factor to prevent the next level of fixed pins from hitting the released bullet. The calculation formula for the Nth level pin is:

[0111] ρ N =1.1(ρ N-1 +Δx N-1 )

[0112]

[0113] Known ρ Nx =ρ N +f, then we can solve for θ Nx and θN Then the coordinates of the fixed pin are (ρ Nx ,θ Nx ).

[0114] Taking n=3 as an example, we know that R=0.8m, the rotating motor speed is 12rpm, the polar coordinates of the center of the curved slot are (0.5, 0.925), θ0=1.8578rad (the angle between the spring axis and the positive direction of the x-axis when t=0), the radius of the curved slot=0.4m, and the distance between the far end of the spring block and the moving pin f=0.05m. It is known that the rotating motor speed is 12rpm=0.2r / s, and the active disk and the chassis have opposite relative motion directions (the active disk rotates counterclockwise), so the angular velocity of the fixed disk is ω0=2πn=-0.4πrad / s.

[0115] For ease of understanding, a specific example is also provided: When n = 3, the coordinates of the pin are determined. It is known that the pond R0 = 8m, h = 0.4m, and g is 9.8kg / s 2

[0116]

[0117] Substituting the data, we get

[0118]

[0119] It is known that ρ0=0.08m, n=3, m=0.1kg (that is, 0.1kg of feed is thrown each time, and a total of 0.3kg of feed is thrown), and k is 200kN / m.

[0120]

[0121] Known

[0122]

[0123] This equation is recorded as the equation for the change of the push block radial displacement and the active disk rotation angle.

[0124] When t = 0, ρ1 = 0.4m, ρ 1x =ρ1+f=0.45m

[0125] At this time, the equation of the change of the radial displacement of the push block and the rotation angle of the active disk can be obtained:

[0126] θ 1x =1.8578rad

[0127] The polar coordinates of the first fixed pin are (0.45, 1.8578)

[0128] ρ2=1.1(ρ1+Δx1)=0.5214m

[0129] ρ 2x =ρ2+f=0.5714m

[0130] At this time, the equation of the change of the radial displacement of the push block and the rotation angle of the active disk can be obtained:

[0131] θ 2x =1.7110rad

[0132] The polar coordinates of the second fixed pin are (0.5714, 1.7110)

[0133] ρ3=1.1(ρ2+Δx2)=0.7363m

[0134] ρ 3x =ρ3+f=0.78634m

[0135] At this time, the equation of the change of the radial displacement of the push block and the rotation angle of the active disk can be obtained:

[0136] θ 3x =1.4268rad

[0137] The polar coordinates of the third fixed pin are (0.78634, 1.4268).

[0138] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0139] (1) In the present invention, the displacement change of the fixed pin is used to control the compression amount of the spring to form a multi-stage ejection mechanism. This design can accurately adjust the ejection force according to the position of the fixed pin, so that the feed can be evenly thrown to various areas of the pond, which significantly improves the uniformity of feed distribution and solves the problem of uneven feed distribution in the prior art;

[0140] (2) In the present invention, the compression amount of the spring can be flexibly changed by adjusting the distance between the fixed pins, thereby controlling the distance of the feed being thrown. This technology can adapt to the needs of ponds of different sizes and shapes, realize customized settings of the delivery range, and solve the problem of insufficient flexibility of traditional devices in different application scenarios.

[0141] The above contents are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0142] There are a few points to note:

[0143] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0144] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0145] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0146] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A working mechanism for uniform feed spreading, comprising a screw lifting mechanism and a feed spreading device, characterized in that: The screw lifting mechanism comprises a screw motor (35), a track (34), an upper pull plate (31) and a conical plate (33). The screw motor (35) is fixedly arranged vertically downward on the lower end surface of the partition (24) and is surrounded by a track (34) extending vertically downward. The conical plate (33) is slidably arranged on the track (34). The screw of the screw motor (35) is fixedly connected to the center of the conical plate (33). The lower end surface of the conical plate (33) is fixedly connected to the upper pull plate (31) through a plurality of copper pillars (32) near the edge. There is a gap between the conical plate (33) and the upper pull plate (31) that is equal to the length of the copper pillars (32). The gap can accommodate feed passing through. A circular hole is opened at the center of the upper pull plate (31). The outer circle of the upper pull plate (31) is fixedly connected to the storage box (25). The storage box (25) is used to temporarily store feed. The feed throwing device comprises an active disk (41) and a bottom disk (42). The active disk (41) is provided with a plurality of curved slots (54), and the curved slots (54) are provided around the center of the active disk (41). A fixed pin (53) is fixedly provided on the lower end surface of the active disk (41). The fixed pin (53) is fixedly connected to a fixed pin spring (55). The other end of the fixed pin spring (55) is fixed in a cylindrical hole of the active disk (41). One side of the lower end of the fixed pin (53) is a curved slot. The other side is a plane, the plane part is in contact with the spring block (49), a group of the fixed pins (53) is provided between each of the curved slots (54), each group includes one or more fixed pins (53) and the distances from the center of the active disk (41) are different, the center of the chassis (42) is provided with the partition (24), the upper end surface of the partition (24) is provided with a rotating motor (52), the rotating motor (52) and the center of the active disk (41) are fixedly connected so that the chassis (42) can be rotated. The bottom surface of the chassis (42) is provided with a plurality of hollow feed ports (44) around the center of the circle, and the outer surface of the chassis (42) is provided with a plurality of hollow discharge ports (43). The feed ports (44) and the discharge ports (43) are located at the same positions. The top surface of the chassis (42) is provided with a slide groove (45). The slide groove (45) corresponds to the feed port (44) one by one. A push block (46) is slidably provided on the slide groove (45). A fixed device is provided above the push block (46). A movable pin (47) passes through the curved slot (54); a guide shaft (48) is fixedly provided at one end of the push block (46) away from the center of the chassis (42); a spring (51) is provided on the outer sleeve of the guide shaft (48); one end of the spring (51) is fixedly connected to the push block (46); and the other end is fixedly connected to a spring block (49); a circular hole for the guide shaft (48) to pass through is provided at the center of the spring block (49); and the positions of the spring block (49) and the discharge port (43) correspond one to one.

2. A uniform feed spreading mechanism according to claim 1, characterized in that: The invention also comprises a spiral feeding mechanism, which comprises a screw (23), a base (22), a feeding pipe (12) and a feeding motor (21); the lower end of the screw (23) is connected to the bottom motor and driven to rotate by the feeding motor (21); a base (22) is provided on the plane where the bottom motor and the screw (23) are connected; the base (22) is provided on the bottom surface of the pond; the feeding motor (21) is provided below the bottom surface of the pond; the upper end of the screw (23) is located below the conical disk (33); a feeding barrel is provided around the screw (23); the two ends of the feeding pipe (12) are at different heights; the lower part of the feeding barrel is connected to the lower end of the feeding pipe (12); the higher end of the feeding pipe (12) is located on the shore and connected to the shore feeding bin (11).

3. A uniform feed spreading mechanism according to claim 1, characterized in that: The base (22) is a sealed box that wraps the lower motor and is used to protect the dry working environment of the feeding motor (21).

4. A uniform feed spreading mechanism and method according to claim 1, characterized in that: The outlet at the lower end of the feed pipe (12) is arranged above the spiral groove of the screw (23) so as to allow the feed to fall onto the spiral groove after passing through the feed pipe (12).

5. A uniform feed spreading mechanism according to claim 1, characterized in that: The underwater parts of the loading barrel are all sealed.

6. A uniform feed spreading mechanism according to claim 1, characterized in that: The limit of the reciprocating motion of the active disk (41) is the limit of the motion of the movable pin (47) fixedly arranged on the push block (46) at both ends of the curved slot (54).

7. A uniform feed spreading mechanism according to claim 1, characterized in that: The fixed pin (53) fixedly arranged on the lower end surface of the active disk (41) does not contact the bottom plate (42) and limits the position of the spring block (49).

8. A method for uniformly spreading feed, using the uniformly spreading feed mechanism as claimed in any one of claims 1 to 7, characterized in that: S1. Establish the motion trajectory relationship equation: According to the principle of relative motion, by assuming that the active disk is stationary and the chassis is rotating, the initial angular velocity provided by the active disk is equivalent to the initial angular velocity of the spring shaft on the chassis, and then the arc motion equation of the curved slot is converted into the linear motion equation of the spring shaft to simplify the calculation. The linear and arc equations are both in polar coordinate form; S2. Calculation of the position of the fixed pin: Calculate the initial velocity required for throwing the feed. Based on the shape and known parameters of the pond, assume that the feed is in an ideal horizontal throwing motion, and use the formula to determine the initial velocity value. According to the requirement of increasing the initial velocity step by step, calculate the compression amount and corresponding speed of the springs of different levels to ensure that the feed is evenly distributed. Determine the specific position coordinates of the fixed pin by calculating the distance between the end of the spring and the specific point and using the kinematic relationship.

9. A method for uniformly spreading feed according to claim 7, characterized in that: The S1 specifically includes: S101. Establish the polar coordinate expression of the spring axis: Assume that the radius of the active disk is R, and it rotates around the axis O at a constant angular velocity of -ω0. As mentioned above, for the convenience of calculation, assume that the active disk is stationary, and the axis where the spring is located rotates around the axis O at a constant angular velocity of ω0. θ is the angle between the spring axis and the positive direction of the x-axis, ρ is the distance between the intersection point of the spring axis and the curved notch and the origin of the coordinate position, and the equation of the straight line is: y=kx Convert from polar coordinates: Available ρsinθ=kρcosθ k = tanθ Known θ=θ0+w1t Among them, is the angle between the straight line and the positive direction of the x-axis at t=0, then: tan(θ0+w0t)=k The coordinates of any point on the line are: (ρ,θ0+w0t); S102. Establish the polar coordinate expression of the arc slot: Assume that the starting angle of the curved slot is α, the ending angle is β (rad), and the center of the curved slot is (a, b), then: Convert from polar coordinates Available After splitting Using sin 2 θ+cos 2 θ=1Simplifying, we get S103. Establish an expression for the intersection point A of the spring axis and the arc groove with respect to t: Combine the straight line and arc expressions to obtain: Solved That is the coordinate of point A. The value of ρ is explained as follows: The straight line and the arc must have an intersection point, and ρ must have a real root. When ρ has a unique solution, denoted by ρ m , which is the point of tangency between the arc and the line, is solved to r m =acos(θ0+w0t)+bsin(θ0+w0t) When ρ<ρ m When ρ>ρ m When , ρ takes the larger value of the two real roots.

10. A method for uniformly spreading feed according to claim 7, characterized in that: The S2 specifically includes: S201. Calculate the required initial velocity: Assume the pond is a circular pond with an area of That is, the maximum throwing area of ​​the feed of the device of this embodiment, it is known that the vertical height of the feeding position from the sleeping position is h, the radius of the pond is R0, and it is assumed that the feed is thrown in an ideal horizontal motion, then: S202, calculate the spring compression: In order to make the feed evenly distributed in the pond, the spring compression is increased step by step, so that the elastic potential energy increases step by step, thereby providing a step-by-step increasing initial velocity for the feed. Suppose the compression of the 1st, 2nd, 3rd, ..., nth level springs are Δx1, Δx2, Δx3, ..., Δx n The corresponding speed is According to the kinetic energy theorem, W = ΔE k , we can get: Assuming that the required series is the Nth series, we have: Solved S203, calculate the position of the fixed pin: when the farthest end of the spring block contacts the first fixed pin, let the distance between the moving pin of the spring block and the center of the circle be ρ1, θ0 is the initial angle between the spring axis and the positive semi-axis of x, and at the same time, let the distance between the moving pin and the center of the circle be ρ 1x Substituting the position coordinates into the following equation to obtain θ 1x : Then the distance between the fixed pin and the center of the circle is ρ 1x =ρ1+f, calculate Δθ by θ1-θ0, and then calculate θ by θ0-Δθ 1x Then the polar coordinates of the first fixed pin are (ρ 1x ,θ 1x ) Assume that the distance of each change of the moving pin from the center of the circle is ρ N , the polar coordinate position of the fixed pin should be (ρ Nx ,θ Nx ), add the position coordinates of the initial point to the required compression of this level of spring to get ρ N =1.1(ρ N-1 +Δx N-1 ), then 1.1 is the safety factor to prevent the next level of fixed pins from hitting the released bullet. The calculation formula for the Nth level pin is: Then we can find ρ Nx and θ Nx , that is, the polar coordinate position of the fixed pin.

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