An adaptive elastic hitch for a track-based weeding apparatus

Abstract

The application provides an adaptive elastic hook for a crawler-type grass thinning device, comprising integrally formed and sequentially connected first fixed springs, a traction spring, an accumulator spring, a working spring and second fixed springs, wherein the outer diameter of the accumulator spring gradually increases from the traction spring side to the working spring side, the path curve of the working spring comprises a large-diameter circular arc, a plurality of triangular recesses, a semicircular arc and a straight line segment, and the plurality of triangular recesses form a sawtooth structure for clamping water grass stems when the water grass is pulled upward; the application has the following beneficial effects: the application can effectively solve the problems of easy sliding of water grass during upward pulling, easy adhesion of grass during downward pulling, easy damage caused by encountering foreign matters, easy damage of force application structure, and inability to adjust hook density, can dynamically adjust the hook density to cope with scenes with different operation intensities, realize high efficiency and low labor participation in the grass thinning process, and thus is convenient to popularize and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water grass combing device, and particularly relates to a self-adaptive elastic hook for a crawler-type grass thinning device. BACKGROUND

[0002] Water grass is an important part of river crab breeding and water landscape, but too dense water grass is easy to rot and hinders oxygen dissolving in water, thereby causing water quality deterioration; with the scientific and mechanized application of modern breeding industry and ecology, the mechanized salvage of water grass is more and more important, and the application of water grass combing device is more and more popular; the self-adaptive elastic hook is an important part of the water grass combing device, and the water grass needs to go through three stages from combing in water to falling into the grass position, the elastic hook hooks the water grass out of the water surface, the water grass is hung on the elastic hook and moves to the grass falling position along the crawler, and the water grass is separated from the hook under the action of gravity; the design of the elastic hook relates to the water grass processing efficiency, the manual work amount and the work object adaptability and other problems; therefore, the performance of the elastic hook has extremely important significance in the field of water grass combing.

[0003] The traditional elastic hook mainly has the following problems in use: (1) the water grass is easy to slide when being pulled up, and the grass pulling efficiency is low; (2) the water grass is adhered to the hook, and manual cleaning increases the manual work amount; (3) the hook is easy to be damaged when encountering foreign matters and hitting the shore by accident, and the replacement and equipment cost are increased; (4) the hook force is small and cannot be adjusted, and cannot cope with high-intensity work; (5) the wear is large when forcibly performing high-intensity work, and the loss is high; (6) the hook density is fixed and cannot be adjusted. Therefore, a self-adaptive elastic hook which can solve the above problems is urgently needed. SUMMARY

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present application is to provide a self-adaptive elastic hook for a crawler-type grass thinning device, which is used to solve the problems of the prior art, such as the water grass being easy to slide when being pulled up, the water grass being easy to adhere when falling, the hook being easy to be damaged when encountering foreign matters, the force applying structure being easy to be damaged, and the hook density being unable to be adjusted.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides the following technical scheme:

[0006] A self-adaptive elastic hook for a crawler-type grass thinning device, comprising integrally formed first fixed springs, a traction spring, an accumulator spring, a working spring and second fixed springs, which are sequentially connected between the first fixed springs, the traction spring, the accumulator spring, the working spring and the second fixed springs, wherein the outer diameter of the accumulator spring gradually increases from the traction spring side to the working spring side, the path curve of the working spring comprises a large-diameter circular arc, a plurality of triangular recesses, a semicircular arc and a straight line segment, and the plurality of triangular recesses form a sawtooth structure for clamping the water grass stems when pulling up the water grass.

[0007] The gradually increased spring outer diameter of the force storage spring can provide stronger structural strength and rigidity, improve the lateral support area when stressed, and reduce the distortion caused by lateral load; the large-diameter arc on the working spring can increase the included angle of the working spring and the traction spring in the axial view, avoid the water grass from being clamped between the working spring and the traction spring when falling, reduce the difficulty of falling grass, and improve the automatic falling rate of water grass; the sawtooth structure on the working spring can increase the included angle of the water grass pulling force direction and the working spring movement direction, so that the water grass is clamped in the sawtooth recess, and the problem of water grass sliding during pulling up is solved.

[0008] In an embodiment of the present application, the first fixed spring, the traction spring, the force storage spring, the working spring and the second fixed spring are made of a single stainless steel wire, and the diameter of the stainless steel wire is 1.5 mm.

[0009] In an embodiment of the present application, the traction spring comprises a first connecting rod, a second connecting rod and a capsule-shaped ring connected with the first connecting rod and the second connecting rod, one end of the first connecting rod away from the capsule-shaped ring is connected with the first fixed spring, and one end of the second connecting rod away from the capsule-shaped ring is connected with the force storage spring.

[0010] In an embodiment of the present application, the outer diameter of the force storage spring is slightly larger than the outer diameter of the first fixed spring and the second fixed spring, and the pitch of the force storage spring is much smaller than the pitch of the first fixed spring and the second fixed spring; the force storage spring in this technical solution provides stress support for the working spring, so that the angle of the working spring changes with the stress size; the outer diameter of the force storage spring is slightly larger than the outer diameter of the first fixed spring and the second fixed spring, in order to provide stronger structural strength and rigidity, improve the lateral support area when stressed, and reduce the distortion caused by lateral load.

[0011] In an embodiment of the present application, the first fixed spring, the force storage spring and the second fixed spring in one of the elastic hooks are sleeved on the same support rod in the tracked grass thinning device, and the capsule-shaped ring of the traction spring in the elastic hook is sleeved on the previous support rod in the tracked grass thinning device.

[0012] In an embodiment of the present application, a plurality of sleeves are also sleeved on the support rod, the sleeves are located between the elastic hooks, and the elastic hooks and the sleeves are evenly sleeved on the support rod along the length direction of the support rod; this technical solution can change the density of the elastic hooks per unit area by changing the number and length of the sleeves through the interval arrangement of the elastic hooks and the sleeves, so as to adjust the pulling force of the elastic hook array without changing the hook structure.

[0013] As described above, the adaptive elastic hook for the track-type grass weeding device has the following beneficial effects:

[0014] (1) The sawtooth structure on the working spring can increase the included angle between the water grass pulling direction and the working spring movement direction, so that the water grass is clamped in the sawtooth recess, thereby solving the problem of water grass sliding during the pulling process and improving the grass pulling efficiency;

[0015] (2) The large-diameter circular arc track on the working spring can increase the included angle between the working spring and the traction spring in the axial view, so that the water grass is not clamped between the working spring and the traction spring when falling, thereby reducing the difficulty of grass falling and improving the automatic falling rate of water grass;

[0016] (3) By using the force-accumulating spring with gradually changing outer diameter, when encountering foreign matter or the shore, the force-accumulating spring will twist and deform, and release the foreign matter, thereby avoiding the direct fracture caused by excessive force when encountering a rigid structure, and ensuring the service life of the elastic hook;

[0017] (4) The gradually increasing spring outer diameter of the force-accumulating spring can provide stronger structural strength and rigidity, increase the lateral support area when stressed, and reduce the distortion caused by lateral load, and the number of turns of the force-accumulating spring changes according to the required pulling force for grass weeding, thereby adapting to improve the effective working range of the elastic hook;

[0018] (5) By changing the deflection angle of the working spring through the torsional deformation of the force-accumulating spring, the grass pulling force of the elastic hook is changed, thereby adapting to different working environments with different mechanical requirements, abandoning the current operation when encountering extreme working conditions, protecting the integrity of the elastic hook, and avoiding structural failure of the elastic hook;

[0019] (6) By arranging the elastic hook and the sleeve in a spaced manner, the density of the elastic hook per unit area can be changed by changing the number and length of the sleeve, thereby adjusting the pulling force of the elastic hook array without changing the structure of the hook. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A right front view perspective schematic diagram of the adaptive elastic hook for the track-type grass weeding device disclosed by the present application is shown;

[0021] Figure 2 A right view schematic diagram of the adaptive elastic hook for the track-type grass weeding device disclosed by the present application is shown;

[0022] Figure 3 A front view schematic diagram of the adaptive elastic hook for the track-type grass weeding device disclosed by the present application is shown;

[0023] Figure 4 A schematic diagram of the elastic hook of the adaptive elastic hook for the track-type grass weeding device disclosed by the present application is shown.

[0024] Figure 5 Figure shows the schematic diagram of the plurality of elastic hooks and sleeve sets on the support rod in the adaptive elastic hook for the track-type grass mowing equipment disclosed in the present application.

[0025] Element number explanation

[0026] 1, elastic hook; 11, first fixed spring; 12, traction spring; 121, first connecting rod; 122, second connecting rod; 123, capsule-shaped ring; 13, force storage spring; 14, working spring; 141, large-diameter arc; 142, triangular recess; 143, semicircular arc; 144, straight line segment; 15, second fixed spring; 2, support rod; 3, sleeve. DETAILED DESCRIPTION

[0027] The embodiments of the present application are illustrated by specific examples below, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0028] Please refer to Figures 1 to 5 , the present application provides an adaptive elastic hook for track-type grass mowing equipment, comprising integrally formed first fixed spring 11, traction spring 12, force storage spring 13, working spring 14 and second fixed spring 15, the first fixed spring 11, traction spring 12, force storage spring 13, working spring 14 and second fixed spring 15 are connected in turn, the first fixed spring 11, traction spring 12, force storage spring 13, working spring 14 and second fixed spring 15 are made of a single diameter of 1.5 mm stainless steel wire, the curve is smooth and continuous with each other;

[0029] By Figures 1 to 3 It can be seen that the traction spring 12 comprises a first connecting rod 121, a second connecting rod 122 and a capsule-shaped ring 123 connected with the first connecting rod 121 and the second connecting rod 122, the end of the first connecting rod 121 away from the capsule-shaped ring 123 is connected with the first fixed spring 11, and the end of the second connecting rod 122 away from the capsule-shaped ring 123 is connected with the force storage spring 13; it should be noted that the previous support rod 2 in the track movement trajectory is threaded in the capsule-shaped ring 123, which limits the radial rotation degree of freedom of the elastic hook 1, the width of the capsule-shaped ring 123 is slightly larger than the diameter of the support rod 2, the length of the capsule-shaped ring 123 is about 2.5 times the width, the elastic hook 1 can move slightly with the change of the support rod 2 spacing during the track movement, which meets the normal operation of the track under the change of the support rod 2 spacing at the rotating shaft;

[0030] The force storage spring 13 provides force support for the working spring 14, so that the angle of the working spring 14 changes with the size of the force; the outer diameter of the force storage spring 13 is slightly larger than the outer diameter of the first fixed spring 11 and the second fixed spring 15, so that stronger structural strength and rigidity can be provided, the lateral support area when under stress is increased, and the distortion caused by lateral load is reduced; the pitch of the force storage spring 13 is much smaller than the pitch of the first fixed spring 11 and the second fixed spring 15, the outer diameter of the force storage spring 13 gradually increases from the traction spring 12 side to the working spring 14 side, the local stress near the working spring 14 side is reduced, the carrying capacity is increased, and the rigidity is improved; and the number of turns of the force storage spring 13 can be moderately increased or decreased according to the working object to adapt to different working environments; the deflection angle of the working spring 14 is changed by the torsional deformation size of the force storage spring 13, and then the upward grass pulling force of the elastic hook 1 is changed, the working environment with different mechanical requirements is self-adapted, the operation is abandoned in extreme working conditions, and the integrity of the elastic hook 1 is protected;

[0031] The path curve of the working spring 14 includes a large-diameter circular arc 141, a plurality of triangular recesses 142, a semicircular arc 143, and a straight line segment 144; the plurality of triangular recesses 142 form a sawtooth structure for clamping water grass stems when pulling up water grass; in this embodiment, there are three triangular recesses 142 on the working spring 14; it should be noted that the large-diameter circular arc 141 increases the included angle between the working spring 14 and the traction spring 12 in the axial view, avoids water grass being clamped between the working spring 14 and the traction spring 12 when falling, reduces the difficulty of grass falling, and improves the automatic water grass falling rate; the sawtooth structure formed by the three triangular recesses 142 increases the included angle between the water grass pulling force direction and the working spring 14 movement direction, so that the water grass is clamped in the sawtooth recess, the water grass is prevented from sliding down during the pulling-up process, and the grass pulling-up efficiency is improved.

[0032] From the above, Figures 4 to 5 It can be seen that the first fixed spring 11, the force storage spring 13, and the second fixed spring 15 in one elastic hook 1 are sleeved on the same support rod 2 in the track-type grass clearing device, and the capsule-shaped circular ring 123 of the traction spring 12 in the elastic hook 1 is sleeved on the previous support rod 2 in the track-type grass clearing device; a plurality of sleeves 3 are also sleeved on the support rod 2, the sleeves 3 are located between the elastic hooks 1, and the elastic hooks 1 and the sleeves 3 are evenly sleeved on the support rod 2 along the length direction of the support rod 2, wherein the track-type grass clearing device comprises a grass clearing device body, a track installed on the grass clearing device body, and a plurality of support rods 2 installed on the track;

[0033] It should be noted that the first fixed spring 11 and the second fixed spring 15 fix the elastic hook 1 on the support rod 2, and the elastic hook 1 and the sleeve 3 are arranged at intervals, the density of the elastic hook 1 per unit area can be changed by changing the number and length of the sleeve 3, so as to adjust the tension of the elastic hook 1 array without changing the structure of the elastic hook 1; the length of the fixed spring on both sides is relatively short, and in cooperation with different numbers of sleeves 3, the number of elastic hooks on a single support rod 2 can be changed, so that different working scenes with different working intensities can be adapted.

[0034] Specifically, the working process of the adaptive elastic hook is as follows: two support rods 2 pass through the first fixed spring 11, the force storage spring 13, the second fixed spring 15 and the traction spring 12 respectively, and the adaptive elastic hook 1 is combined to form a track of the grass removing device. With the rotation of the track, the elastic hook 1 is driven to move, and the working spring 14 is lifted to hook the water grass in the water. The water grass can be pulled off and can also provide power for the forward movement of the ship to a certain extent. After the water grass stems are pulled and cooperated with the subsequent elastic hook 1, the water grass is pulled out as a whole and covers the surface of the elastic hook 1. After the water grass on the adaptive elastic hook 1 rotates to the back of the track, the water grass on the working spring 14 falls under the action of gravity, and is separated from the elastic hook 1 and falls into the ship body, realizing the grass combing work.

[0035] The working principle of the adaptive elastic hook is as follows: the first fixed spring 11, the force storage spring 13 and the second fixed spring 15 are passed through by the support rod 2. The front support rod 2 in the rotation direction of the track passes through the capsule-shaped ring 123 of the traction spring 12 to fix the elastic hook 1 on the support rod 2. The track rotation drives the support rod 2 and the elastic hook 1 thereon to rotate together. The working spring 14 rotates and moves upward to pull up the water grass in the water. The water grass stems are clamped in the three triangular recesses 142 to avoid the water grass being pulled back into the water by the remaining part in the water when the elastic hook 1 moves, resulting in failure of grass removal. If dense water grass with large quality appears, the working spring 14 will twist the force storage spring 13 to provide greater support force to support the working spring 14 to pull up the dense water grass. If the water grass is too dense or encounters a hard and heavy object, the working spring 14 rotates to the maximum angle, that is, the maximum support force provided by the force storage spring 13 is still insufficient to pull up the target object, and the target object will slide off the working spring 14 by inertia, which is regarded as giving up this operation. The array of traction springs 12 forms a track plane to support and move the water grass, realizing the transfer of the water grass from the water to the grass falling position. The large-diameter arc 141 of the working spring 14 increases the included angle between the working spring 14 and the traction spring 12 in the axial view, avoiding the water grass being clamped between the working spring 14 and the traction spring 12 when falling, and improving the automatic falling rate of the water grass.

[0036] In summary, the sawtooth structure on the working spring 14 in the application can increase the angle between the water grass pulling direction and the working spring 14 movement direction, so that the water grass is clamped in the sawtooth recess, solving the problem of water grass sliding during the pulling process, and improving the efficiency of pulling the grass; the large-diameter arc 141 trajectory on the working spring 14 can increase the angle between the working spring 14 and the traction spring 12 in the axial view, avoiding the water grass being clamped between the working spring 14 and the traction spring 12 when falling, reducing the difficulty of falling the grass, and improving the automatic falling rate of the water grass; through the gradually changing outer diameter of the force storage spring 13, when encountering foreign matter or the shore, the force storage spring 13 will be twisted and deformed, and release the foreign matter, thereby avoiding the force being too large to directly break when encountering a rigid structure, and ensuring the service life of the elastic hook 1;

[0037] The gradually increasing spring outer diameter of the force storage spring 13 can provide stronger structural strength and rigidity, improve the lateral support area when stressed, reduce the distortion caused by lateral load, and the number of turns of the force storage spring 13 changes according to the required pulling force requirement for thinning the grass, and adapts to improve the effective working range of the elastic hook 1; the deflection angle of the working spring 14 is changed by the torsional deformation size of the force storage spring 13, thereby changing the pulling force of the elastic hook 1, and self-adapting to different working environments with different mechanical requirements, giving up this operation when encountering extreme working conditions, protecting the integrity of the elastic hook 1, and avoiding structural failure of the elastic hook 1; through the interval arrangement of the elastic hook 1 and the sleeve 3, the density of the elastic hook 1 per unit area can be changed by changing the number and length of the sleeve 3, so as to adjust the pulling force of the elastic hook 1 array without changing the hook structure.

[0038] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the application should still be covered by the claims of the application.

Claims

1. An adaptive elastic hook for a crawler-type grass grooming device, characterized by: The invention comprises an integrally formed first fixed spring (11), a traction spring (12), a force storage spring (13), a working spring (14) and a second fixed spring (15), wherein the first fixed spring (11), the traction spring (12), the force storage spring (13), the working spring (14) and the second fixed spring (15) are connected in sequence; The traction spring (12) comprises a first connecting rod (121), a second connecting rod (122) and a capsule-shaped ring (123) connected to the first connecting rod (121) and the second connecting rod (122); the end of the first connecting rod (121) away from the capsule-shaped ring (123) is connected to the first fixed spring (11); and the end of the second connecting rod (122) away from the capsule-shaped ring (123) is connected to the storage spring (13); The outer diameter of the force storage spring (13) gradually increases from the side of the traction spring (12) to the side of the working spring (14), and the path curve of the working spring (14) includes a large-diameter arc (141), a plurality of triangular recesses (142), a semicircular arc (143) and a straight line segment (144), and the plurality of triangular recesses (142) form a sawtooth structure for clamping the stem of the waterweed when the waterweed is pulled upward; The first fixed spring (11), the force storage spring (13) and the second fixed spring (15) in one of the elastic hooks (1) are all mounted on the same support rod (2) in the crawler-type grass-grooming device, and the capsule-shaped ring (123) on the traction spring (12) in the elastic hook (1) is mounted on the previous support rod (2) in the crawler-type grass-grooming device.

2. The adaptive elastic hook for a crawler-type grass grooming device according to claim 1, characterized in that: The first fixed spring (11), the traction spring (12), the force storage spring (13), the working spring (14) and the second fixed spring (15) are made by bending a single stainless steel wire, and the diameter of the stainless steel wire is 1.5 mm.

3. The adaptive elastic hook for a crawler-type grass grooming device according to claim 1, characterized in that: The outer diameter of the force storage spring (13) is slightly larger than the outer diameters of the first fixed spring (11) and the second fixed spring (15), and the pitch of the force storage spring (13) is much smaller than the pitch of the first fixed spring (11) and the second fixed spring (15).

4. The adaptive elastic hook for a crawler-type grass grooming device according to claim 1, characterized in that: The support rod (2) is also provided with a plurality of sleeves (3), the sleeves (3) being located between the elastic hooks (1), and the elastic hooks (1) and the sleeves (3) being evenly spaced and fitted on the support rod (2) along the length direction of the support rod (2).

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