Eccentric crushing roller, tooth type crushing device and crop digging machine

Abstract

The utility model discloses an eccentric crushing roller, a tooth type crushing device and a crop digging machine, the eccentric crushing roller is arranged on the way of a material moving path, a roller body axis (11a) of the eccentric crushing roller (110) deviates by a preset distance relative to a rotating center line (11b), crushing teeth (11c) are arranged on the roller surface of the eccentric crushing roller (110), and the crushing teeth (11c) are arranged on the roller surface of the eccentric crushing roller (110). When materials move and pass through the eccentric crushing roller (110), the eccentric crushing roller (110) rotates around the rotating center line (11b), and the crushing teeth (11c) vibrate and crush the materials in the rotating process of the eccentric crushing roller (110). When the eccentric crushing roller disclosed by the utility model is used for crushing soil, as the axis of the roller body and the rotating center line are not collinear and deviate for a certain distance, the crushing teeth arranged on the roller surface can form an intermittent rapping effect on the soil when the eccentric crushing roller rotates around the rotating center line, so that the crushing effect on the soil can be improved; the crusher is especially suitable for crushing hardened soil.

Description

Technical Field

[0001] The utility model relates to the technical field of crop harvesting, in particular to an eccentric crushing roller, a toothed crushing device and a crop digger. Background Art

[0002] At present, when the existing crop harvester harvests root crops (such as angelica dahurica, potatoes, sweet potatoes, etc.), the root crops such as potatoes and sweet potatoes are shoveled out of the soil by a shovel, and then the fruits and the soil shoveled up together move along the conveyor belt of the harvester. During the movement, the soil attached to the fruits will shake off, and finally the fruits are thrown out from the tail of the harvester.

[0003] However, the soil separation ability of the above harvester is relatively limited. When the fruits and the soil move on the conveyor belt, the soil attached to the surface of the fruits may not completely fall off. Especially for compacted soil, the compacted soil may not be broken during the process of moving from the front end to the rear end of the harvester, resulting in the fruits wrapped in the soil being unable to break away. Subsequently, it is necessary to manually break the soil clods and then take out the fruits.

[0004] In view of this, the applicant believes that it is necessary to improve the structure of the existing crop harvester to enhance its ability to break soil. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an eccentric crushing roller, a toothed crushing device and a crop digger, so as to enhance the ability of the harvesting equipment to break soil and effectively separate the crop fruits wrapped in the soil from the soil.

[0006] To solve the above technical problem, in the first aspect, the utility model provides an eccentric crushing roller, which is arranged on the way of the material moving path. The axis line of the roller body of the eccentric crushing roller is offset from the rotation center line by a predetermined distance, and the roller surface of the eccentric crushing roller is provided with crushing teeth;

[0007] When the material moves and passes through the eccentric crushing roller, the eccentric crushing roller rotates around the rotation center line, and the crushing teeth vibrate and break the material during the rotation of the eccentric crushing roller.

[0008] In the second aspect, the utility model further provides a toothed crushing device, which is arranged on the way of the material moving path. The toothed crushing device includes two paired crushing rollers, and a predetermined distance is provided between the two paired crushing rollers for the material to pass through;

[0009] Moreover, among the two paired crushing rollers, at least one crushing roller is the above-mentioned eccentric crushing roller.

[0010] In a third aspect, the present utility model further provides a crop digging machine, comprising:

[0011] A frame;

[0012] A shovel, which is installed at the front end of the frame;

[0013] A conveying device, which is installed on the frame and is connected to the rear side of the shovel, and is used for conveying the soil and crop fruits shoveled by the shovel;

[0014] A crushing device, which is arranged on the way of the material moving path and is used for crushing the material; wherein, the crushing device includes the eccentric crushing roller described in the above first aspect and / or the toothed crushing device described in the above second aspect.

[0015] Based on the crop digging machine described in the above third aspect, preferably, the conveying device includes two conveyor belts arranged one in front of the other;

[0016] Wherein, the front conveyor belt is connected to the rear side of the shovel, and this conveyor belt is gradually inclined upward from front to back;

[0017] The front end of the rear conveyor belt is arranged below the rear end of the front conveyor belt, and this conveyor belt is also gradually inclined upward from front to back;

[0018] The crushing device includes the toothed crushing device described in the above second aspect, and this toothed crushing device is arranged between the tail of the front conveyor belt and the front end of the rear conveyor belt.

[0019] On the basis of the above structure, in addition to including the toothed crushing device described in the above second aspect, the crushing device further includes at least one eccentric crushing roller described in the above first aspect.

[0020] On the basis of the above structure, when the number of the eccentric crushing rollers described in the above first aspect is one, this eccentric crushing roller is arranged above the belt body of one of the conveyor belts;

[0021] When the number of the eccentric crushing rollers described in the above first aspect is two, one of the eccentric crushing rollers is arranged above the belt body of the rear conveyor belt, and the other eccentric crushing roller is arranged above the tail of the belt body of the front conveyor belt.

[0022] Based on the crop digging machine described in the above third aspect, preferably, the conveying device includes one conveyor belt;

[0023] The crushing device includes the eccentric crushing roller described in the above first aspect, and this eccentric crushing roller is arranged above the belt body of the conveyor belt;

[0024] And at a position corresponding to the eccentric crushing roller, a supporting roller is arranged below the upper belt body of the conveyor belt, and the supporting roller is used for supporting the upper belt body of the conveyor belt.

[0025] On the basis of the above structure, the crushing device further includes the toothed crushing device described in the second aspect above, and the toothed crushing device is arranged below the tail of the conveyor belt.

[0026] Based on the crop harvester described in the third aspect above, preferably, the crop harvester further includes a separation device, the separation device includes a rotary separation wheel, the rotary separation wheel is installed on the frame and connected to the rear side of the conveying device, and the rotary separation wheel generates centrifugal force through rotation to throw the materials transported by the conveying device out from the tail of the harvester.

[0027] In addition, in the crop harvester described in any one of the above, at least one eccentric crushing roller is replaced by a non-eccentric crushing roller, the axis line of the roller body of the non-eccentric crushing roller is collinear with the rotation center line, and the roller surface of the non-eccentric crushing roller is provided with crushing teeth;

[0028] When the material moves and passes through the non-eccentric crushing roller, the non-eccentric crushing roller rotates around the rotation center line, and the crushing teeth strike and crush the material during the rotation of the non-eccentric crushing roller.

[0029] The beneficial effects of the present utility model are as follows:

[0030] (1) For the eccentric crushing roller provided by the present utility model, when crushing the soil, since the axis line of the roller body is not collinear with the rotation center line and the two are offset by a certain distance, when the eccentric crushing roller rotates around the rotation center line, the crushing teeth arranged on the roller surface will form an intermittent vibration effect on the soil, thereby improving the crushing effect on the soil, especially for the crushing of compacted soil;

[0031] (2) In the toothed crushing device provided by the present utility model, since the two crushing rollers are arranged in pairs, especially at least one crushing roller also adopts an eccentric crushing roller, when the soil passes through the gap between the two crushing rollers, the two crushing rollers will produce tearing, biting and vibrating effects on the soil, which can greatly improve the crushing effect on the soil, especially the crushing effect on compacted soil;

[0032] (3) When the crop harvester provided by the present utility model harvests root crops, the shovel can shovel out the soil and the root crop fruits wrapped in the soil. When the shoveled soil moves on the conveying device, it will pass through the toothed crushing device and the eccentric crushing roller for crushing, so that the soil (especially compacted soil) can be fully crushed, and thus the crop fruits wrapped in the soil can be separated;

[0033] (4) During the high-speed rotation of the rotary separation wheel in the separation device of the present utility model, the soil and crop fruits falling on it can obtain a large centrifugal force, which can throw the soil and crop fruits out from the tail of the excavator. During the throwing process, due to the different weights of the soil and crop fruits, the throwing distances will be different. The crop fruits are thrown farther, while the soil is thrown closer. Thus, when finally leaving the tail of the excavator, the crop fruits and the soil will be separated from each other. Description of the Drawings

[0034] Figure 1 is a schematic structural view of the crop excavator of the present utility model when using two conveyor belts;

[0035] Figure 2 is a schematic structural view of an embodiment of the eccentric crushing roller provided by the present utility model, and the tooth profile in the figure is a tearing tooth;

[0036] Figure 3 is Figure 2 the front view of

[0037] Figure 4 is a schematic structural view of the eccentric crushing roller provided by the present utility model when the tooth profile is a pointed tooth;

[0038] Figure 5 is the front view of the non-eccentric crushing roller provided by the present utility model;

[0039] Figure 6 is a schematic structural view of the rotary separation wheel provided by the present utility model;

[0040] Figure 7 is a schematic structural view of the crop excavator of the present utility model when using one conveyor belt;

[0041] Figure 8 is a schematic structural view of the pressurizing mechanism and the swing arm when connected in the present utility model. Detailed Embodiments

[0042] The present utility model will be further introduced in detail below in conjunction with specific embodiments, but the implementation manners of the present utility model are not limited thereto.

[0043] Embodiment 1:

[0044] Refer to Figure 2 and Figure 3 , the present utility model provides an eccentric crushing roller 110, which is arranged on the way of the material moving path. The axis line 11a of the roller body of the eccentric crushing roller 110 is offset from the rotation center line 11b by a predetermined distance, and the roller surface of the eccentric crushing roller 110 is provided with crushing teeth 11c.

[0045] When the material moves and passes through the eccentric crushing roller 110, the eccentric crushing roller 110 rotates around the rotation center line 11b, and the crushing teeth 11c vibrate and crush the soil in the material during the rotation of the eccentric crushing roller 110. Of course, in addition to vibrating the soil, the eccentric crushing roller 110 may also have an effect of squeezing and tearing the soil.

[0046] The tooth profile of the above-mentioned crushing teeth 11c is replaceable, and there are various structural forms of the tooth profile of the crushing teeth 11c. For example, it includes but is not limited to the following tooth shapes: tearing teeth (see Figure 2 ), pointed teeth (see Figure 4 ), spike teeth, bow teeth, swinging and knocking teeth, triangular pyramid teeth, quadrangular pyramid teeth, and so on. When in use, the appropriate tooth profile can be selected through experiments according to different soil conditions.

[0047] When the eccentric crushing roller of this embodiment crushes the soil, since the roller body axis line 11a and the rotation center line 11b are not collinear and are offset by a certain distance, when the eccentric crushing roller 110 rotates around the rotation center line 11b, the crushing teeth 11c arranged on the roller surface will form an intermittent vibrating effect on the soil, thereby improving the crushing effect on the soil, especially for the crushing of compacted soil.

[0048] Of course, the eccentric crushing roller 110 of this embodiment is not limited to crushing soil and compacted soil lumps, and it can also be used for the crushing of other solid materials, such as for crushing ore materials on mining equipment and for crushing materials with appropriate hardness on other equipment.

[0049] Embodiment 2:

[0050] See Figure 1 , this embodiment provides a toothed crushing device 120, which is arranged on the way of the material movement path. The toothed crushing device 120 includes two paired crushing rollers, and a predetermined distance is provided between the two paired crushing rollers for the material to pass through. And, among the two paired crushing rollers, at least one crushing roller adopts the eccentric crushing roller 110 described in Embodiment 1, that is, one of the crushing rollers can adopt the eccentric crushing roller 110 described in Embodiment 1, and the other crushing roller can adopt a non-eccentric crushing roller 130 (it can be provided with crushing teeth or not), or both crushing rollers can adopt the eccentric crushing roller 110 described in Embodiment 1 (this situation is relatively rare), and it can be determined according to the specific situation.

[0051] Among them, in the above two paired crushing rollers, one crushing roller can be set as fixed and non-adjustable, and the other crushing roller can be set as movable and adjustable to achieve the purpose of adjustable distance between the two. Of course, it is also possible to set both crushing rollers as movable and adjustable. Or, both crushing rollers can also be set as fixed and non-adjustable, but in this case, the distance between the two crushing rollers is fixed and non-adjustable. Among them, the so-called fixed and non-adjustable crushing roller means that the position of the crushing roller is fixed and cannot be moved up and down, left and right or in other directions, but it can still rotate around its own axis, rather than being completely fixed and immovable.

[0052] In this embodiment, since the two crushing rollers are arranged in pairs, especially one crushing roller also adopts the eccentric crushing roller 110 of Embodiment 1, when the soil passes through the gap between the two crushing rollers, the two crushing rollers will tear, bite and vibrate the soil, which can greatly improve the crushing effect of the soil, especially the crushing effect of the compacted soil.

[0053] Similar to Embodiment 1, the toothed crushing device 120 of this embodiment is not limited to crushing soil and compacted soil clods, and it can also be used for crushing other solid materials, such as crushing ore materials on mining equipment and crushing materials with appropriate hardness on other equipment.

[0054] Embodiment 3:

[0055] Based on the above Embodiment 1 and Embodiment 2, this embodiment provides a crop digging machine, which includes a frame 200, a shovel 300, a conveying device 400 and a crushing device 100.

[0056] The frame 200 includes frame plates distributed on the left and right sides.

[0057] The shovel 300 is installed at the front end of the frame 100 and located between the two frame plates.

[0058] The conveying device 400 is installed between the two frame plates of the frame 200 and is connected to the rear side of the shovel 300. The conveying device 400 is used to convey the soil and crop fruits shoveled by the shovel 300.

[0059] The crushing device 100 is arranged on the way of the material moving path and is used to crush the soil in the material. Among them, the crushing device 100 includes the eccentric crushing roller 110 described in Embodiment 1 and / or the toothed crushing device 120 described in Embodiment 2.

[0060] Embodiment 4:

[0061] This embodiment provides a crop digging machine. On the basis of Embodiment 3, more specific settings are made as follows.

[0062] See Figure 1 Figure 1 , in this embodiment, the conveying device 400 includes two conveyor belts 410 arranged one in front of the other; wherein, the front conveyor belt 410 is connected to the rear side of the shovel 300, and this conveyor belt 410 is gradually inclined upward from front to back; the front end of the rear conveyor belt 410 is arranged below the rear end of the front conveyor belt 410, and this conveyor belt 410 is also gradually inclined upward from front to back; the crushing device 100 includes the toothed crushing device 120 described in Embodiment 2, and this toothed crushing device 120 is arranged between the tail of the front conveyor belt 410 and the front end of the rear conveyor belt 410.

[0063] Optionally, on the basis of the above structure, in addition to including the toothed crushing device 120 described in Embodiment 2, the crushing device 100 further includes at least one eccentric crushing roller 110 described in Embodiment 1.

[0064] Among them, when the number of the eccentric crushing rollers 110 described in Embodiment 1 is one, this eccentric crushing roller 110 can be arranged above the belt body of one of the conveyor belts 410. When the number of the eccentric crushing rollers 110 described in Embodiment 1 is two, one of the eccentric crushing rollers 110 can be arranged above the belt body of the rear conveyor belt 410, and the other eccentric crushing roller 110 can be arranged above the tail of the belt body of the front conveyor belt 410.

[0065] Thus, see Figure 1 Figure 1 , when the root crop harvester in this embodiment harvests root crops, the harvester of the present utility model is pulled by a tractor or other power head to move in the field. During the moving process, the shovel at the front end of the harvester will shovel into the soil and shovel out the soil and the root crop fruits (such as potatoes, sweet potatoes, etc.) wrapped in the soil; afterwards, the soil and the crop fruits will enter above the front conveyor belt, and then move along with the front conveyor belt. When the soil and the crop fruits leave from the tail of the front conveyor belt, the eccentric crushing roller 110 arranged above the tail of the front conveyor belt will strike and crush the larger soil blocks; afterwards, the soil and the crop fruits will pass through between the toothed crushing devices 120. At this time, the toothed crushing devices 120 will form a pair-roller crushing effect to further crush the unbroken soil blocks; afterwards, the soil and the crop fruits will fall to the front end of the rear conveyor belt, and then move along with the rear conveyor belt. When the soil and the crop fruits come to the position where the eccentric crushing roller 110 arranged above the rear conveyor belt is located, this crushing roller will crush the soil blocks again, so that the unbroken soil blocks before will be crushed again; afterwards, when leaving from the tail of the rear conveyor belt, the soil has been fully crushed.

[0066] Embodiment 5:

[0067] This embodiment provides a crop digging machine. On the basis of Embodiment 3, this embodiment makes more specific settings as follows.

[0068] See Figure 7 , in this embodiment, the conveying device 400 includes a conveyor belt 410, which is connected to the rear side of the shovel 300, and the conveyor belt 410 is gradually inclined upward from front to back; the crushing device 100 includes the eccentric crushing roller 110 described in Embodiment 1, and the eccentric crushing roller 110 is arranged above the belt body of the conveyor belt 410; and at a position corresponding to the eccentric crushing roller 110, a supporting roller 420, a support and other components are arranged below the upper belt body of the conveyor belt 410. The supporting roller 420 is of a roller structure and is used to support the upper belt body of the conveyor belt 410, so that when the eccentric crushing roller 110 crushes the soil above the conveyor belt 410, the supporting roller 420 can support the upper belt body of the conveyor belt 410, prevent the soil and the upper belt body from sinking, and ensure the crushing effect.

[0069] Optionally, on the basis of the above structure, the crushing device 100 further includes the toothed crushing device 120 described in Embodiment 2, and the toothed crushing device 120 is arranged below the tail of the conveyor belt 410 (not shown in the figure).

[0070] Thus, see Figure 7 , when the crop digging machine in this embodiment harvests root crops, the tractor or other power heads pull the digging machine of the present invention to move in the field. During the movement, the shovel at the front end of the digging machine will shovel into the soil and shovel out the soil and the root crop fruits (such as potatoes, sweet potatoes, etc.) wrapped in the soil; then, the soil and the crop fruits will enter above the conveyor belt 410 and then move along with the conveyor belt 410. When the soil and the crop fruits reach the position of the eccentric crushing roller 110 arranged above the conveyor belt, the eccentric crushing roller 110 will crush the soil clods; then, the soil and the crop fruits will continue to move along the conveyor belt 410 and then leave from the tail of the conveyor belt 410. If the toothed crushing device 120 is also arranged below the tail of the conveyor belt 410, the toothed crushing device 120 can also crush the soil again, so that the soil clods that have not been crushed before are crushed again.

[0071] Embodiment 6:

[0072] This embodiment provides a crop digging machine. On the basis of any one of the above Embodiments 3 to 5, this embodiment makes more specific settings as follows.

[0073] See Figure 1 Or Figure 7, the crop digging machine further includes a separation device 500. The separation device 500 includes a rotary separation wheel 510. The rotary separation wheel 510 is installed on the frame 200 and is connected to the rear side of the conveying device 400. The rotary separation wheel 510 generates centrifugal force through rotation to throw the materials conveyed by the conveying device 400 out from the tail of the digging machine.

[0074] For example, if this embodiment is an optimized setting based on Embodiment 4, since there are two conveyor belts 410, the separation device 500 should be connected to the rear side of the latter conveyor belt 410; if this embodiment is an optimized setting based on Embodiment 5, since there is only one conveyor belt 410, the separation device 500 can be connected to the rear side of this conveyor belt 410.

[0075] Preferably, the rotary separation wheel 510 can be one or two. When there are two rotary separation wheels 510, see Figure 1 and Figure 7 , the two rotary separation wheels 510 are arranged side by side, one in front of the other, between the two frame plates of the frame 100. The former rotary separation wheel 510 is connected to the lower rear of the conveying device 400, and the latter rotary separation wheel 510 is arranged next to the former rotary separation wheel 510.

[0076] See Figure 6 , the structure of the rotary separation wheel 510 is generally as follows: there is a turntable 511 at each end of the rotary separation wheel 510, and a rotating shaft 512 extending outward is provided at the center of each of the two turntables 511. A number of axial rods 513 are connected between the two turntables 511. The axial rods 513 are equally spaced around the rotary separation wheel 510. A support disk 514 is arranged at a certain distance interval within the area enclosed by each axial rod 513. The support disk 514 is fixed to the axial rod 513 and is used to support each axial rod 513.

[0077] In this embodiment, due to the setting of the separation device 500, after the soil and crop fruits leave the conveyor belt (when there are two conveyor belts, it refers to the latter conveyor belt), they will fall onto the rotary separation wheel 510 of the separation device 500. The rotary separation wheel 510 rotates at a high speed, so that the soil and crop fruits falling on it obtain a large centrifugal force. This centrifugal force can throw the soil and crop fruits out from the tail of the digging machine. During the throwing process, due to the different weights of the soil and crop fruits, the throwing distances will be different. The crop fruits are thrown farther, and the soil is thrown closer. Thus, when finally leaving the tail of the digging machine, the crop fruits and the soil will be separated from each other.

[0078] Embodiment 7:

[0079] This embodiment provides a crop digging machine. This embodiment makes certain adjustments based on any one of Embodiments 3 to 6 of the above, specifically as follows.

[0080] In this embodiment, at least one eccentric crushing roller 110 in the crushing device 100 is replaced by a non - eccentric crushing roller 110'. Refer to Figure 5 , the axis line 11a of the roller body of the non - eccentric crushing roller 110' is collinear with the rotation center line 11b, and the roller surface of the non - eccentric crushing roller 110' is provided with crushing teeth 11c; when the material moves and passes through the non - eccentric crushing roller 110', the non - eccentric crushing roller 110' rotates around the rotation center line 11b, and the crushing teeth 11c strike and crush the soil in the material during the rotation of the non - eccentric crushing roller 110'; where Figure 5 is the front view of the non - eccentric crushing roller 110'.

[0081] That is to say, in Embodiments 3 to 6 of the above, the involved eccentric crushing rollers 110 can be selectively replaced by non - eccentric crushing rollers 110', including the eccentric crushing rollers 110 involved in the toothed crushing device 120. That is, in Embodiments 3 to 6 of the above, according to the soil conditions or the user's needs, it can be determined which crushing rollers use eccentric crushing rollers 110 and which use non - eccentric crushing rollers 110'. Of course, all the crushing rollers can also use non - eccentric crushing rollers 110'.

[0082] For example, refer to Figure 1 , Figure 1 the crushing roller above the tail of the front conveyor belt 410 can use a non - eccentric crushing roller 110', and the crushing roller above the belt body of the rear conveyor belt 410 can also use a non - eccentric crushing roller 110'. One of the crushing rollers in the toothed crushing device 120 between the two conveyor belts 410 can use an eccentric crushing roller 110.

[0083] In this embodiment, the non - eccentric crushing roller 110' also has a good soil crushing effect. Especially after the soil is crushed in multiple stages, most of the compacted soil blocks can be fully crushed.

[0084] In addition, in Embodiments 3 to 7 of the above, each crushing roller can be set to be adjustable, that is, refer to Figure 1 or Figure 7 , the eccentric crushing roller 110 or the non - eccentric crushing roller 110' can be installed on the frame plate of the frame 200 through a swing arm 140. Adjusting the angle of the swing arm 140 can adjust the crushing distance of each crushing roller. For example, Figure 1Among them, the rightmost and the rightmost crushing rollers (which can be eccentric crushing rollers 110 or non-eccentric crushing rollers 110') are both installed on the frame plate of the frame 200 through swing arms 140. By adjusting the angle of the swing arm 140, the distance between the crushing roller and the lower conveyor belt 410 can be adjusted, and thus the crushing distance can be changed; Figure 1 Among them, the left crushing roller in the toothed crushing device 120 (which can be eccentric crushing roller 110 or non-eccentric crushing roller 110') is also installed on the frame plate of the frame 200 through the swing arm 140. By adjusting the angle of the swing arm 140, the distance between the two crushing rollers in the toothed crushing device 120 can be adjusted, and thus the crushing distance can be changed.

[0085] See Figure 1 or Figure 7 , adapted to the swing arm 140, an arc-shaped groove 210 is further provided on the frame plate of the frame 200. One end of the swing arm 140 away from the fixed point can rotate along the arc-shaped groove 210, so as to realize the angle adjustment of the swing arm 140.

[0086] In addition, in order to improve the crushing effect, the swing arm 140 can also be equipped with a pressurizing mechanism. The pressurizing mechanism can make the corresponding crushing roller approach the corresponding conveyor belt 410 or the fixed crushing roller 130, so as to apply a more effective force to the soil blocks during crushing and ensure the crushing effect.

[0087] There are various optional forms of the pressurizing mechanism. For example, a spring-type pressurizing mechanism, a hydraulic-type pressurizing mechanism, etc. can be adopted. For example, when adopting a spring-type pressurizing mechanism, see Figure 8 , a rotatable clamping plate 151 is connected beside the swing arm 140. The top end of the clamping plate 151 is connected with a screw rod 152. The upper part of the screw rod 152 passes through a fixing plate 153. A nut 154 is also connected to the upper part of the screw rod 152. The lower surface of the nut 154 abuts against the fixing plate 153. The fixing plate 153 is fixedly connected to the frame plate of the frame 200 by bolts. A spring 155 is also sleeved on the screw rod 152 between the fixing plate 153 and the clamping plate 151. The top of the spring 155 abuts against the fixing plate 153, and the bottom abuts against the clamping plate 151. Thus, the spring 155 can apply a downward pressure to the swing arm 140 through the clamping plate 151, and further make the crushing roller connected to the swing arm 140 approach the corresponding conveyor belt 410 or the fixed crushing roller 130, so as to achieve the purpose of pressurization; when the angle of the swing arm 140 needs to be adjusted, the nut 154 can be rotated to change the length of the screw rod 152 below the fixing plate 153, and then the screw rod 152 is used to drive the swing arm 140 to rotate, so that the angle of the swing arm 140 changes, and thus the purpose of adjusting the crushing distance is achieved. If a hydraulic-type pressurizing mechanism is adopted, the principle is similar, and components such as springs can be replaced with hydraulic components to achieve similar technical effects.

[0088] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Eccentric crushing roller, set in the middle of the material moving path, characterized by: The roller body axis (11a) of the eccentric crushing roller (110) is offset by a predetermined distance relative to the rotation center line (11b), and the roller surface of the eccentric crushing roller (110) is provided with crushing teeth (11c); When the material moves and passes through the eccentric crushing roller (110), the eccentric crushing roller (110) rotates around the rotation center line (11b), and the crushing teeth (11c) vibrate and crush the material during the rotation of the eccentric crushing roller (110).

2. Tooth crushing device, set in the middle of the material moving path, characterized by: The toothed crushing device (120) comprises two crushing rollers arranged in pairs, and the two crushing rollers arranged in pairs are spaced apart by a predetermined distance to allow materials to pass therethrough; Furthermore, at least one of the two crushing rollers arranged in pair is the eccentric crushing roller (110) as claimed in claim 1.

3. A crop digging machine, characterized in that: include: Rack(200); A scraper (300), wherein the scraper (300) is mounted on the front end of the frame (200); a conveying device (400), the conveying device (400) being mounted on the frame (200) and connected to the rear side of the shovel blade (300), and being used for conveying soil and crop fruits scooped up by the shovel blade (300); A crushing device (100), wherein the crushing device (100) is arranged in the middle of a material moving path and is used for crushing materials; wherein the crushing device (100) comprises the eccentric crushing roller (110) according to claim 1 and / or the toothed crushing device (120) according to claim 2.

4. The crop digging machine according to claim 3, characterized in that: The conveying device (400) comprises two conveying belts (410) arranged one behind the other; The front conveyor belt (410) is connected to the rear side of the scraper (300), and the conveyor belt (410) is gradually inclined upward from front to back; The front end of the rear conveyor belt (410) is arranged below the rear end of the front conveyor belt (410), and the conveyor belt (410) is also gradually inclined upward from front to back; The crushing device (100) comprises the tooth crushing device (120) according to claim 2, and the tooth crushing device (120) is arranged between the tail of the previous conveyor belt (410) and the front end of the next conveyor belt (410).

5. The crop digging machine according to claim 4, characterized in that: In addition to the toothed crushing device (120) described in claim 2, the crushing device (100) further comprises at least one eccentric crushing roller (110) described in claim 1.

6. The crop digging machine according to claim 5, characterized in that: When the number of the eccentric crushing roller (110) as claimed in claim 1 is one, the eccentric crushing roller (110) is arranged above the belt body of one of the conveyor belts (410); When the number of the eccentric crushing rollers (110) described in claim 1 is two, one of the eccentric crushing rollers (110) is arranged above the belt body of the rear conveyor belt (410), and the other eccentric crushing roller (110) is arranged above the tail of the belt body of the front conveyor belt (410).

7. The crop digging machine according to claim 4, characterized in that: The conveying device (400) comprises a conveying belt (410); The crushing device (100) comprises the eccentric crushing roller (110) according to claim 1, and the eccentric crushing roller (110) is arranged above the belt body of the conveyor belt (410); Furthermore, at a position corresponding to the eccentric crushing roller (110), a supporting wheel (420) is arranged below the upper belt body of the conveyor belt (410), and the supporting wheel (420) is used to support the upper belt body of the conveyor belt (410).

8. The crop digging machine according to claim 7, characterized in that: The crushing device (100) further comprises the tooth crushing device (120) according to claim 2, wherein the tooth crushing device (120) is arranged below the tail of the conveyor belt (410).

9. The crop digging machine according to claim 4, characterized in that: The crop harvester also includes a separation device (500), and the separation device (500) includes a rotating separation wheel (510). The rotating separation wheel (510) is installed on the frame (200) and connected to the rear side of the conveying device (400). The rotating separation wheel (510) generates centrifugal force through rotation to scatter the materials transported by the conveying device (400) from the rear of the harvester.

10. The crop digging machine according to any one of claims 3 to 9, characterized in that: At least one eccentric crushing roller (110) is replaced by a non-eccentric crushing roller (110′), the roller body axis (11a) of the non-eccentric crushing roller (110′) is colinear with the rotation center line (11b), and the roller surface of the non-eccentric crushing roller (110′) is provided with crushing teeth (11c); When the material moves and passes through the non-eccentric crushing roller (110'), the non-eccentric crushing roller (110') rotates around the rotation center line (11b), and the crushing teeth (11c) strike and crush the material during the rotation of the non-eccentric crushing roller (110').

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