CN218735919U

CN218735919U - Ditching disc soil cutting force adjusting device of notched disc type ditching fertilizer applicator

Info

Publication number: CN218735919U
Application number: CN202223359222.1U
Authority: CN
Inventors: 王朱裔; 陆玉兰; 严睿聪
Original assignee: Changshu Elite Parts Co ltd
Current assignee: Changshu Elite Parts Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-03-28
Anticipated expiration: 2032-12-13

Abstract

The utility model provides a breach disk ditching fertilizer distributor's ditching dish soil cutting force adjusting device, including ditching dish soil cutting force size adjusting device assembly, the assembly includes actuating lever effect piece connecting pin axle, adjustment position locking seat, actuating lever effect piece blocks nut and thrust spring, actuating lever effect piece connecting pin axle is established on adjustment position locking seat, there is a pair of adjustment position locking claw on adjustment position locking seat's the left surface, the right-hand member constitutes there is a pair of claw of holding between the fingers, establish the eccentric hole of effect piece on actuating lever effect piece, there is milling plane cooperation chamber actuating lever's right flank, there is a set of press wheel linking arm actuating lever working face on actuating lever effect piece's the outer wall, actuating lever effect piece blocks that nut and actuating lever effect piece connecting pin axle thread head are fixed, thrust spring is located adjustment position locking seat intracavity. The advantages are that: the workload of inspection and maintenance is reduced, and the cost is saved; the utility model can not be invaded by the sundries in the field, and the sundries can not block and embed the adjacent spring rings.

Description

Ditching disc soil cutting force adjusting device of notched disc type ditching fertilizer applicator

Technical Field

The utility model belongs to the technical field of agricultural machine, concretely relates to ditching dish soil cutting force adjusting device of breach disk ditching fertilizer distributor is joined in marriage on towed no-tillage seeder.

Background

The advantages of the traction type no-tillage planter are at least as follows: firstly, time is saved, for example, the traditional seeding of corn, soybean, peanut and the like needs to be ploughed before seeding, and the link of ploughing can be saved in no-tillage seeding; secondly, the water storage and soil moisture conservation capability is strong, and because the straw harvested from the previous stubble can be directly covered, water, fertilizer, gas and heat of the soil can be supplied coordinately; thirdly, the lodging resistant effect of the seedlings is good, and the original soil structure is damaged due to the fact that the soil layer is ploughed in the traditional sowing mode, namely the original sowing mode, and the consolidation of the root system and the soil is influenced; fourthly, the improvement of the soil structure is facilitated, because no-tillage can adopt a straw returning mode, the organic matter content of the soil is increased, and the soil fertility is improved; fifthly, the seeding efficiency is high, so that precious human resources can be saved, and the modernization smell can be fully reflected.

In the case of a complete set of traction type no-tillage planter, a ditching and fertilizing device is generally arranged at the front part of the machine frame, a seeding device is arranged at the middle part of the machine frame, and a pressing and soil covering device is arranged at the rear part of the machine frame. The ditching component of the structure system of the ditching and fertilizing device, namely the type of a ditcher, can be divided into an acute-angle ditcher (alpha is less than 90 degrees) and an obtuse-angle ditcher (alpha is more than 90 degrees) according to different soil-entering angles, wherein the acute-angle ditcher is of a hoe shovel type, a arrow shovel type, a wing shovel type, a boat shovel type, a core share type and the like, and the obtuse-angle ditcher is of a boot shoe type, a sliding knife type, a single disc type and a double disc type. The furrow opener and the stubble-breaking furrow-opening soil working component comprise a plane disc, a notch disc, a disc with a depth wheel, a wide corrugated disc, a narrow corrugated disc, a driving disc, a narrow tillage knife, a chisel-shaped shovel, a narrow-pointed-angle furrow opener and the like.

The gap disk type ditching and fertilizing machine is also called a single gap disk type fertilizing and ditching machine, and is matched with a traction type no-tillage seeding machine to be very suitable for digging a fertilizing ditch meeting planting agricultural requirements on a field surface covered by straws.

In the published chinese patent literature, technical information relating to the aforementioned notched disc type furrowing fertilizer applicator is found, and a list of the above is disclosed in CN211960013U as "elastic notched disc fertilizer applicator" and CN211671273U as "single notched disc type furrowing fertilizer applicator", etc. As known in the industry, the depth of the fertilizing furrows is shallow or deep according to the actual situation, namely according to the actual planting agronomic requirements, and specifically, the greater the furrowing soil cutting force of the furrowing disc such as the above-mentioned furrowing disc is, the deeper the fertilizing furrows are made, and vice versa. In addition, the cutting force of the ditching disc also needs to be reasonably adjusted according to different conditions of residual straws and/or weeds on the ground surface.

The above-mentioned notched disc-type furrow opener/fertilizer applicator, although not limited thereto, has the technical effects described in the technical effect column of the specification, but has the following disadvantages: first, the adjustment of the soil cutting force of the ditching disc to achieve the depth change of the ditches is achieved directly by the adjustment of the spring, for example, paragraph 0015 of the specification of CN211960013U describes: ' because the guide rod is sleeved with the limiting spring, the fertilizing depth is kept stable under the downward pressing action of the limiting spring; also as described in paragraph 0016 of the specification of CN 211671273U: the tension of the tension spring is changed by adjusting the extension length of the adjusting screw rod, and the ditching soil cutting force of the gap disc is increased or reduced. However, the spring is easy to cause fatigue and is difficult to exert the expected spring force effect durably, so that the actual soil cutting force requirement of the ditching disc cannot be met, namely, a larger error exists, the accuracy of adjusting the soil cutting force of the ditching disc is often difficult to guarantee due to the elastic characteristic of the spring, and in order to ensure the acting force of the spring, regular or irregular maintenance or even replacement is needed, so that the maintenance workload is increased, and the use cost is increased to a certain extent; secondly, because the working environment, namely the service environment, of the agricultural machine including the gap disk type ditching fertilizer applicator is relatively severe, the springs for adjusting the soil cutting force of the ditching disk are difficult to avoid the situation that the adjacent spring rings are blocked and embedded due to invasion of sundries, so that the expected adjusting effect is further influenced. In view of the foregoing, there is a need for reasonable improvements, and the solutions described below have been made in this context.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a help abandoning and use the spring and can realize cutting the accurate adjustment of soil strength size to the ditching dish as required and can not appear abnormal change and can not invade by debris and stifled the inlaying and both can show the maintenance work volume that alleviates daily in use adjusting to specified agronomy requirement position after and can save the ditching dish soil strength adjusting device of breach disk ditching fertilizer distributor of accessory use cost again.

The utility model is completed in this way, a ditching disc soil cutting force adjusting device of a notched disc ditching fertilizer applicator, which comprises a ditching disc soil cutting force adjusting device assembly, the ditching disc soil cutting force adjusting device assembly comprises an actuating lever action block connecting pin shaft, an adjusting position locking seat, an actuating lever action block blocking nut and a thrust spring, the actuating lever action block connecting pin shaft is arranged on the adjusting position locking seat in a left-right moving way, a pin shaft milling plane and an actuating lever action block connecting pin shaft screw head are sequentially formed at the left end of the actuating lever action block connecting pin shaft from right to left, the right end of the actuating lever action block connecting pin shaft probes into the adjusting position locking seat cavity of the adjusting position locking seat, and a connecting pin shaft rotating adjusting head is formed at the right end of the actuating lever action block connecting pin shaft, a hexagonal socket is formed at the center of the right side of the rotational adjusting head of the connecting pin shaft, a pair of adjusting position locking claws is formed on the left side of the adjusting position locking seat, a pair of pinching claws is formed at the right end of the adjusting position locking seat, the pinching claws correspond to each other up and down, an action block eccentric hole is formed on the action block of the actuating lever, a milled plane matching cavity is formed on the right side of the action block of the actuating lever and at the position corresponding to the action block eccentric hole, the milled plane matching cavity is matched with the milled plane of the pin shaft, the thread head of the actuating lever action block connecting pin shaft extends to the left side of the action block of the actuating lever through the eccentric hole of the action block, a group of press wheel connecting arm action surfaces are formed on the outer wall of the actuating lever action block in the circumferential direction, and the distances from the action surfaces of the groups of press wheel connecting arm connecting arms to the eccentric holes of the action block are different, the actuating rod action block stop nut is fixed with the threaded head of the connecting pin shaft of the actuating rod action block at the position on the left side of the actuating rod action block, the thrust spring is positioned in the adjusting position locking seat cavity and sleeved at the right end of the connecting pin shaft of the actuating rod action block, the left end of the thrust spring is supported on the bottom wall of the cavity of the adjusting position locking seat cavity, and the right end of the thrust spring is supported on the left side surface of the rotating adjusting head of the connecting pin shaft; actuating lever effect piece with the lower surface of press wheel connecting arm actuating lever is corresponding, and a set of press wheel connecting arm actuating lever effect face in the press wheel connecting arm actuation lever effect face any press wheel connecting arm actuation lever effect face contact with the lower surface of press wheel connecting arm actuating lever.

In a specific embodiment of the present invention, the milling plane fitting cavity is D-shaped.

The utility model provides a technical scheme's technological effect lies in: because a spring is abandoned in the structural system of the ditching disc soil cutting force adjusting device assembly, the soil cutting force of the ditching disc can be accurately adjusted according to needs after the ditching disc ditching fertilizer applicator is matched with the ditching disc fertilizer applicator, and abnormal change can not occur after the ditching disc soil cutting force is adjusted to the positioned position, so that the inspection and maintenance workload in daily use can be obviously reduced, and the spare part cost can be saved; because the soil cutting force of the ditching disc is adjusted by using the spring in the prior art, the ditching disc can not be invaded by sundries in an operation field, and the situation that the sundries are blocked and embedded between adjacent spring rings can not occur.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the utility model applied to a notched disc type ditching fertilizer applicator.

Fig. 3 is a connection diagram of the support frame of the structural system of the connection shaft and the frame connection mechanism shown in fig. 2.

Fig. 4 is a detailed structural view of a fertilizer outlet nozzle at the lower end of the fertilizer pipe shown in fig. 2.

Fig. 5 is a schematic view of the assembled state of fig. 2.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and back are exemplified according to the position state of fig. 2, and thus, it should not be understood as a specific limitation to the technical solution provided by the present invention.

In order to facilitate the presentation of the ordinal representation and to facilitate the public's interpretation and understanding of the technical nature of the present invention, the applicant first elaborates on fig. 2 to 4 below.

Referring to fig. 2, the following components of a gapped disk furrow applicator are shown: a frame 1; a frame connecting mechanism 2, wherein the frame connecting mechanism 2 is connected with the frame 1; a press wheel connecting arm wall plate 3 and a fertilizing tube fixing wall plate 4, the upper lower part of the press wheel connecting arm wall plate 3 is fixedly connected with the upper lower part of the fertilizing tube fixing wall plate 4 by a connecting beam 10 (also called as a connecting beam "), a connecting shaft left shaft sleeve seat 31 is fixed on the upper top of the press wheel connecting arm wall plate 3, a connecting shaft right shaft sleeve seat 41 is fixed on the upper top of the fertilizing tube fixing wall plate 4 and at the position corresponding to the connecting shaft left shaft sleeve seat 31, a connecting shaft 20 is rotatably arranged between the connecting shaft left and right

shaft sleeve seats

31, 41, the middle part of the connecting shaft 20 is inserted on the frame connecting mechanism 2; a vibration absorber 5, the lower end of the vibration absorber 5 is connected between the lower end of the wall plate 3 of the press wheel connecting arm and the front of the upper end of the wall plate 4 for fixing the fertilizing tube, and the upper end of the vibration absorber 5 is connected with the frame connecting mechanism 2; the upper end of the press wheel connecting arm 6 is hinged with the press wheel connecting arm wall plate 3 at a position corresponding to the middle part of the right side of the press wheel connecting arm wall plate 3, the lower end of the press wheel connecting arm 6 extends towards the direction of the press wheel 7 and is provided with a press wheel connecting hole 61, and the press wheel 7 is positioned on the right side of the press wheel connecting arm 6 and is connected with the press wheel connecting arm 6 at a position corresponding to the press wheel connecting hole 61; the ditching disc 8 is connected with the left side of the lower end of the fertilizing tube fixing wall plate 4 at the position corresponding to the right side of the press wheel 7; a fertilizing tube 30, the fertilizing tube 30 is fixed with the right side of the fertilizing tube fixing wall plate 4, and a fertilizing nozzle 303 at the lower end of the fertilizing tube 30 extends out of the edge of the ditching disc 8.

Continuing to refer to fig. 2, the press wheel connecting hole 61 is an elliptical hole; the aforementioned press wheel 7 includes a press wheel body 71, a press wheel body supporting disk 72 and a press wheel hub 73, a press wheel body supporting race 711 is formed on the inner wall of the press wheel body 71 and around the press wheel body 71, the press wheel body supporting race 711 is fixed to the edge portion of the press wheel body supporting disk bottom plate 721 of the press wheel body supporting disk 72 through press wheel body supporting race fixing bolts 7111 distributed at intervals, the left side surface of the press wheel body supporting disk 72 is supported on the right side of the press wheel body supporting race 711, the press wheel body supporting disk 72 is integrally located in a press wheel body supporting disk matching cavity 712 of the press wheel body 71, the press wheel hub 73 is fixed to the center position of the press wheel body supporting disk bottom plate 721 of the press wheel body supporting disk 72 through a set of press wheel hub fixing bolts 731 distributed at intervals, a center position of the press wheel hub 73 is provided with a press wheel shaft 732, the press wheel shaft 732 penetrates through the press wheel body connecting hole 61 to extend to the left side of the press wheel body connecting arm 6 and is limited by a hub shaft nut 7321 matched on the hub shaft 732, and the press wheel body hub 72 and the press wheel body and the press wheel hub supporting disk 73 and the press wheel body 71 and the press wheel hub and the press wheel body supporting disk 73 are rotated with the aforementioned press wheel body 71; the ditching disc 8 connected with the left side of the fertilizing tube fixing wall plate 4 corresponds to the right side of the press wheel body 71.

Because aforementioned press wheel connecting hole 61 is the oval hole, therefore change press wheel hub fixing bolt 731 position on press wheel connecting hole 61 and just can change press wheel 7's position correspondingly, thereby except by following still detailed description the utility model discloses a ditching dish soil cutting force size adjusting device assembly 9 is outside the soil cutting force size adjustment of ditching dish 8, still can take another kind of adjustment mode as required to realize the soil cutting force size adjustment to ditching dish 8, realizes the adjustment to ditching dish 8 soil cutting force size through the position change to aforementioned press wheel hub fixing bolt 731 on press wheel connecting hole 61 promptly, soil cutting force is big more, the fertilization ditch that ditching dish 8 was opened is darker, otherwise the same case. Therefore, the compacting wheel 7 has the functions of compacting mud (i.e. soil) and adjusting the depth of the ditching disc 8.

In the present embodiment, the damper 5 corresponds to the rear upper side of the pressing wheel body 71. Compared with the prior art, the structural design can embody excellent vibration-avoiding effect, and when the ditching disc 8 encounters hard impurities in soil, the obstacle-avoiding effect can be smoothly lifted, so that the ditching disc 8 is convenient to protect.

With continuing reference to fig. 2 and also to fig. 3, the frame connecting mechanism 2 includes a bracket fixing seat connecting anchor 21, a bracket fixing seat 22 and a bracket 23, the bracket fixing seat connecting anchor 21 is located in front of the frame 1 and a bracket fitting cavity 211 is formed on a rearward side of the bracket fixing seat connecting anchor 21, the bracket fitting cavity 211 is fitted to the frame 1, and an opening of the bracket fitting cavity 211 is formed to be open, an upper anchor fixing screw 212 is provided at a rear end of an upper portion of the bracket fixing seat connecting anchor 21, a lower anchor fixing screw 213 is provided at a rear end of a lower portion of the bracket fixing seat connecting anchor 21, the bracket fixing seat 22 is located behind the frame 1 and corresponds to the bracket fixing seat connecting anchor 21, the bracket fixing seat 22 is formed to have a bracket fixing seat nut cavity 221, an upper anchor fixing screw hole 222 is provided at an upper portion of a front wall of the bracket fixing seat 22, a lower anchor fixing screw hole 223 is provided at a lower portion of a front wall of the bracket fixing seat 22, and a left side wall of the bracket fixing seat 22 and a left side wall of the bracket fixing seat is provided with a screw hole 2213 corresponding to a lower screw hole of the bracket fixing nut 2213, a lower screw hole is provided at a position corresponding to the bracket fixing screw hole of the bracket fixing nut 2211, and a lower screw hole is provided at a lower screw hole of the bracket fixing nut connecting anchor fixing nut 2213 corresponding to the bracket fixing seat. The aforementioned anchor ear upper fixing screw 212 is screwed into the aforementioned support frame fixing seat nut cavity 221 through the aforementioned anchor ear upper fixing screw hole 222 and is locked by the aforementioned anchor ear upper fixing screw locking nut 2211, the aforementioned anchor ear lower fixing screw 213 is screwed into the support frame fixing seat nut cavity 221 through the aforementioned anchor ear lower fixing screw hole 223 and is locked by the aforementioned anchor ear lower fixing screw locking nut 2212, the front side of the aforementioned support frame fixing seat support leg 224 corresponds to the aforementioned rear side of the frame 1 and abuts against the rear side of the frame 1, the upper end of the support frame 23 corresponds to the rear side of the aforementioned support frame fixing seat 22 and is screwed into the support frame fixing seat nut cavity 221 through the aforementioned support frame connecting screw hole by the support frame connecting screw 231 and is locked by the aforementioned support frame connecting screw locking nut 2213; the middle part of the connecting shaft 20 is inserted at the lower end of the supporting frame 23; the upper end of the absorber 5 is connected to the upper end of the support frame 23.

Although a pair of upper and lower

anchor bolt holes

222 and 223 are shown in fig. 2, only one

anchor bolt

212 and 213 is provided, which is designed to select one of the upper and lower

anchor bolt holes

222 and 223 according to the requirement.

As shown in fig. 2, a connecting shaft left shaft sleeve seat semicircular cavity 32 (also called C-shaped cavity) is formed at the top of the upper end of the press wheel connecting arm wall plate 3, the connecting shaft left shaft sleeve seat 31 is welded and fixed with the top of the upper end of the press wheel connecting arm wall plate 3 at a position corresponding to the connecting shaft left shaft sleeve seat semicircular cavity 32, a connecting shaft right shaft sleeve seat semicircular cavity 42 (also called C-shaped cavity) is formed at the top of the upper end of the fertilizer applying pipe fixing wall plate 4 and at a position corresponding to the connecting shaft left shaft sleeve seat semicircular cavity 32, and the connecting shaft right shaft sleeve seat 41 is welded and fixed with the top of the upper end of the fertilizer applying pipe fixing wall plate 4 at a position corresponding to the connecting shaft right shaft sleeve seat semicircular cavity 42; as shown in fig. 1 and 2, a connecting shaft insertion hole 232 is formed at a lower end of the support frame 23 so as to penetrate from the left side to the right side of the support frame 23, a middle portion of the connecting shaft 20 is inserted into the lower end of the support frame 23 at a position corresponding to the connecting shaft insertion hole 232, a left end of the connecting shaft 20 protrudes out of a left side surface of the connecting shaft insertion hole 232 and is rotatably disposed on the connecting shaft left boss base 31 through the connecting shaft left boss 201, a connecting shaft left end oil seal 202 is disposed at an end of the connecting shaft 20 protruding out of the left side of the connecting shaft left boss base 31, a right end of the connecting shaft 20 protrudes out of a right side surface of the connecting shaft insertion hole 232 and is rotatably disposed on the right connecting shaft boss base 41 through the connecting shaft right boss 203, and a connecting shaft right end oil seal 204 is disposed at an end of the connecting shaft 20 protruding out of the right side of the connecting shaft right boss base 41.

As shown in fig. 3, a nozzle fitting hole 233 communicating with the coupling shaft insertion hole 232 is formed in a position corresponding to the coupling shaft insertion hole 232 on the lower end surface of the support bracket 23, a nozzle fixing screw hole 205 is formed in a middle portion of the coupling shaft 20 and in a position corresponding to the nozzle fitting hole 233, the nozzle fixing screw hole 205 penetrates from one side to the other side of the coupling shaft 20, a nozzle 2331 is disposed in a position corresponding to the nozzle fitting hole 233, the nozzle 2331 is screwed into the nozzle fixing screw hole 205, and a valve filler 23311 is disposed in a central position of the nozzle 2331.

When the valve type oil filling core 23311, which is aligned to the valve core-like effect, is filled with the lubricating oil, the lubricating oil spreads between the inner wall of the connecting shaft insertion hole 232 and the outer wall of the connecting shaft 20 through the oil filling nozzle fixing screw hole 205, so that the connecting shaft 20 and the connecting shaft insertion hole 232 have a good lubricating effect to ensure the required moving effect of the whole support frame 23.

Continuing to refer to fig. 2, a press wheel connecting arm limiting shaft 33 is formed on the right side of the press wheel connecting arm wall plate 3 and at a position corresponding to the left side surface of the upper end of the press wheel connecting arm 6 in a state of being perpendicular to the press wheel connecting arm wall plate 3, a press wheel connecting arm wall plate sleeve hole 34 is formed in a position below the middle part of the press wheel connecting arm wall plate 3, the press wheel connecting arm wall plate sleeve hole 34 penetrates from the left side to the right side of the press wheel connecting arm wall plate 3, a press wheel arm pivot connecting pin 3411 is embedded in the press wheel connecting arm wall plate sleeve hole 341 corresponding to the press wheel connecting arm, the right end of the press wheel arm pivot connecting pin 3411 extends to the right side of the press wheel connecting arm wall plate sleeve 341 and then extends to the right side to the upper end 62 formed at the upper end of the press wheel pivot connecting shaft hole of the press wheel connecting arm 6, a press wheel arm pivotal connecting pin locking screw hole 34111 is provided in the press wheel arm pivotal connecting pin 3411 at a position corresponding to the press wheel connecting arm pivotal connecting hole 62, a press wheel connecting arm pivotal connecting pin locking screw hole 63 communicating with the press wheel connecting arm pivotal connecting hole 62 is provided in the press wheel connecting arm 6 at a position corresponding to the press wheel connecting arm pivotal connecting pin locking screw hole 62, a press wheel connecting arm pivotal connecting pin locking screw 631 is provided in a position corresponding to the press wheel connecting arm pivotal connecting pin locking screw hole 63, and the press wheel connecting arm pivotal connecting pin locking screw 631 is screwed into the press wheel arm pivotal connecting pin locking screw hole 34111.

With reference to fig. 2 and fig. 3, a vibration-damping spring lower connecting shaft left end supporting hole 35 is formed at the lower end of the wall plate 3 connected to the press wheel connecting arm, and a vibration-damping spring lower connecting shaft right end supporting hole 43 is formed at the upper end of the wall plate 4 fixed by the fertilizing tube and at a position corresponding to the vibration-damping spring lower connecting shaft left end supporting hole 35; a left bearing hole 234 for the upper connecting shaft of the vibration-absorbing spring is formed on the left side wall of the upper end of the supporting frame 23, and a right bearing hole 235 for the upper connecting shaft of the vibration-absorbing spring is formed on the right side wall of the upper end of the supporting frame 23 at a position corresponding to the left bearing hole 234 for the upper connecting shaft of the vibration-absorbing spring.

The vibration absorber 5 comprises a lower vibration-absorbing spring connecting shaft 51, an upper vibration-absorbing spring connecting shaft 52 and a vibration-absorbing spring 53, the vibration-absorbing spring 53 is connected between the upper vibration-absorbing spring connecting seat 531 and the lower vibration-absorbing spring connecting seat 532, the right end of the lower vibration-absorbing spring connecting shaft 51 is limited on the right side of the fertilizing tube fixing wallboard 4 at the position corresponding to the right end bearing hole 43 of the lower vibration-absorbing spring connecting shaft, the left end of the lower vibration-absorbing spring connecting shaft 51 is sequentially limited by a lower vibration-absorbing spring connecting shaft thread head limiting nut 5111 which is screwed on the lower vibration-absorbing spring connecting shaft thread head 511 at the left end of the lower vibration-absorbing spring connecting shaft 51 after passing through the lower vibration-absorbing spring connecting seat connecting shaft hole 5321 of the lower vibration-absorbing spring connecting seat 532 and the left end bearing hole 35 of the lower vibration-absorbing spring connecting shaft, the right end of the upper connecting shaft 52 of the vibration-proof spring is limited on the right side of the right side wall of the upper end of the supporting frame 23 at the position corresponding to the right supporting hole 235 of the upper connecting shaft of the vibration-proof spring through a snap spring 521, the left end of the upper connecting shaft 52 of the vibration-proof spring sequentially passes through the upper connecting shaft hole 5311 of the upper connecting shaft 531 of the vibration-proof spring and the right supporting hole 235 of the upper connecting shaft of the vibration-proof spring and then is limited by an open pin 522 inserted in the left end part of the upper connecting shaft 52 of the vibration-proof spring, and the left end supporting hole 35 of the lower connecting shaft of the vibration-proof spring and the right end supporting hole 43 of the lower connecting shaft of the vibration-proof spring are elliptical holes; as shown in fig. 5, the vibration absorbing spring 53 corresponds to the upper rear side of the press wheel body 71.

Continuing with fig. 3, a ditching disc hub seat connecting screw shaft hole 44 is opened at the lower end of the fertilizing tube fixing wall plate 4, and a fertilizing tube fixing arm fixing screw hole 45 is opened at the positions corresponding to the front side and the rear side of the ditching disc hub seat connecting screw shaft hole 44, a pair of fertilizing tube fixing arm fixing screws 451 is arranged at the positions corresponding to the fertilizing tube fixing arm fixing screw holes 45, a fertilizing tube fixing arm 301 is fixed at the middle part of the fertilizing tube 30, a pair of fertilizing tube fixing arm screw abdicating holes 3011 is opened at the position corresponding to the fertilizing tube fixing arm fixing screw holes 45 on the fertilizing tube fixing arm 301, the pair of fertilizing tube fixing arm fixing screws 451 passes through the fertilizing tube fixing arm screw abdicating holes 3011 and is locked by the fertilizing tube fixing arm fixing screw locking nuts 4511 screwed at the right end parts of the pair of fertilizing tube fixing arm fixing screws 451, and a ditching disc hub seat connecting shaft end abdicating hole 3012 is opened at the position corresponding to the position between the pair of fertilizing tube fixing arm screw abdicating holes 3011 on the fertilizing tube fixing arm 301; a center position of the ditching disc 8 is provided with a ditching disc center hole 81, a group of ditching disc hub fixing screw holes 82 penetrating through the ditching disc 8 in the thickness direction are arranged at intervals around the ditching disc center hole 81, a left ditching disc hub 83 is arranged at the left side of the ditching disc 81, a right ditching disc hub 84 is arranged at the right side of the ditching disc 8, the left ditching disc hub 83 penetrates through the group of ditching disc hub fixing screw holes 82 through a group of ditching disc left hub fixing screws 831 distributed at intervals and is fixed with a group of ditching disc right hub fixing screw holes 841 arranged on the ditching disc right hub 84 at intervals, a ditching disc hub seat 8421 is arranged at the center position of the ditching disc right hub 84 through a ditching disc hub bearing 842, a ditching disc hub seat connecting shaft head 212 of the ditching disc hub seat 8421 forming the right side thereof is fixed with the lower end of the fertilizing tube fixing wallboard 4 through a ditching disc hub seat connecting screw shaft 84211, and the hub seat connecting shaft head 212 of the ditching disc hub seat is connected with the ditching disc hub seat through a ditching disc hub seat connecting screw shaft 842 at a position corresponding to the ditching disc hub seat connecting shaft hole 3012; a ditching disc left hub sealing ring caulking groove 832 is arranged on the right side of the ditching disc left hub 83 and at a position corresponding to the peripheral edge of the ditching disc central hole 81, a left sealing ring 8321 is embedded in the ditching disc left hub sealing ring caulking groove 832, the left sealing ring 8321 is in sealing fit with the peripheral edge of the left side of the ditching disc central hole 81 of the ditching disc 8, a ditching disc right hub sealing ring caulking groove (not shown in the figure) is arranged on the left side of the ditching disc right hub 84 and at a position corresponding to the peripheral edge of the ditching disc central hole 81, a right sealing ring (not shown in the figure) is embedded in the ditching disc right hub sealing ring caulking groove, the right sealing ring is in sealing fit with the peripheral edge of the right side of the ditching disc central hole 81 of the ditching disc 8, the ditching disc left and

right hubs

83, 84 and the ditching disc 8 are in rotating fit with the ditching disc hub seat 8421 through the ditching disc hub bearing 842, and a ditching disc notch 85 (namely a ditching disc notch is expressed by the applicant) is formed on the disc edge of the ditching disc 8 at intervals; a corrugated hose 302 is assembled at the upper end of the fertilizing tube 30 through a steel hoop 3021, a hose positioning support 3022 is fixed at the upper end of the corrugated hose 302, and the hose positioning support 3022 is fixed with a hose positioning support fixing screw hole 46 arranged on the fertilizing tube fixing wall plate 4 through a hose positioning support fixing screw 30221.

Referring to fig. 4 in combination with fig. 2, a fertilizer outlet 303 is formed at the lower end of the fertilizer applying pipe 30, a fertilizer outlet groove 3031 is formed at the top, left side and bottom of the fertilizer outlet 303, and the fertilizer applying pipe cavity 304 of the fertilizer applying pipe 30 is communicated with the fertilizer outlet groove 3031. As is apparent from the schematic view of fig. 5, the lower end of the fertilizer nozzle 303 protrudes slightly beyond the lower edge of the furrowing plate 8, and fertilizer, preferably granular fertilizer, is introduced from the upper portion of the corrugated tube 302, passes through the fertilizer application tube cavity 304 of the fertilizer tube 30, and is then led out from the fertilizer outlet slot 3013 into the trench opened by the furrowing plate 8. Further, since the disk edge of the opening disk 8 is formed with the opening disk notches 85 and the opening disk blade teeth 86 in a spaced-apart state, the opening disk 8 can be referred to as a single-notch disk type opening disk.

Referring to fig. 1 and continuing to fig. 2, first, as shown in fig. 2, a press wheel connecting arm actuating lever 64 is formed by folding the upper end of the press wheel connecting arm 6 to the left, an actuating lever action block connecting pin hole 47 is formed in the middle of the upper end of the fertilizing tube fixing wall plate 4 and at a position corresponding to the right end of the press wheel connecting arm actuating lever 64, and locking claw holes 48 are formed in the circumferential direction around the actuating lever action block connecting pin hole 47 at intervals; as shown in fig. 1, the soil cutting force adjusting device assembly 9 of the ditching disc comprises an actuating lever action block connecting pin shaft 91, an adjusting position locking seat 92, an actuating lever action block 93, an actuating lever action block blocking nut 94 and a thrust spring 95, wherein the actuating lever action block connecting pin shaft 91 is arranged on the adjusting position locking seat 92 in a left-right moving manner, the left end of the actuating lever action block connecting pin shaft 91 penetrates through the actuating lever action block connecting pin shaft hole 47 to extend to the left side of the fertilizing tube fixing wall plate 4, a pin shaft milling plane 911 and an actuating lever action block connecting pin shaft screw head 912 are sequentially formed at the left end of the actuating lever action block connecting pin shaft 91 from right to left, the right end of the actuating lever action block connecting pin shaft 91 extends into an adjusting position locking seat cavity 921 of the adjusting position locking seat 92, and a connecting pin shaft rotation adjusting head 913 is formed at the right end of the actuating lever action block connecting pin shaft 91, a hexagonal socket 9131 is formed in the center of the right side surface of the connecting pin roll rotation adjusting head 913, a pair of position adjusting locking claws 922 are formed on the left side surface of the position adjusting locking seat 92, the pair of position adjusting locking claws 922 are fitted into the locking claw holes 48, a pair of finger grip claws 923 are formed on the right end of the position adjusting locking seat 92, the pair of finger grip claws 923 vertically correspond to each other, an actuating block eccentric hole 931 is formed in the actuating lever actuating block 93, a D-shaped milled-surface fitting cavity 932 is formed on the right side surface of the actuating lever actuating block 93 and in a position corresponding to the actuating block eccentric hole 931, the milled-surface fitting cavity 932 is fitted into the milled surface 911 of the pin roll, and the actuating lever actuating block connecting pin roll threading head 912 extends to the left side of the actuating lever actuating block 93 through the actuating block eccentric hole 931, a set of press wheel connecting arm actuating lever action surfaces 933 is formed on the outer wall of the actuating lever action block 93 in the circumferential direction, the distances from the press wheel connecting arm actuating lever action surfaces 933 to the action block eccentric holes 931, namely, the eccentric distances are different, the actuating lever action block blocking nut 94 is fixed with the actuating lever action block connecting pin shaft threaded head 912 at the position on the left side of the actuating lever action block 93, a thrust spring 95 is positioned in the adjusting position locking seat cavity 921 and sleeved at the right end of the actuating lever action block connecting pin shaft 91, the left end of the thrust spring 95 is supported on the bottom wall of the adjusting position locking seat cavity 921, and the right end is supported on the left side surface of the connecting pin shaft rotation adjusting head 913; the actuating lever action block 93 corresponds to the lower surface of the press wheel connecting arm actuating lever 64, and any one of the press wheel connecting arm actuating lever action surfaces 933 of the group is in contact with the lower surface of the press wheel connecting arm actuating lever 64.

When the aforementioned adjusting position locking claw 922 is inserted into the corresponding locking claw hole 48, the whole adjusting position locking seat 92 and the aforementioned actuating lever action block connecting pin shaft 91 are limited and cannot rotate, that is, the position cannot be changed, and assuming that the action surface 933 of the actuating lever action block 93 corresponding to the maximum distance between the action block eccentric holes 931 is just attached to the lower surface of the pressing wheel connecting arm actuating lever 64, the angle of the whole pressing wheel connecting arm 6 rotating in the counterclockwise direction is maximized, the height difference between the pressing wheel 7 and the ditching disc 8 and the bottom plane is reduced, the soil cutting force of the ditching disc 8 is relatively reduced, and the opened fertilizing ditch is relatively shallow. On the contrary, if the pair of positioning locking claws 922 are manually retracted (pulled out) from the locking claw holes 48 to the right by means of the grasping claws 923, and the positioning locking seats 92 and the actuating lever acting block connecting pin shaft 91 and the actuating lever acting block 93 are rotated by an angle to bring the actuating lever acting surface 933 of the actuating lever acting block 93 corresponding to the minimum distance between the acting block eccentric holes 931 into contact with the lower surface of the pressing lever actuating arm 64, the pressing lever connecting arm 6 is rotated by an angle in the counterclockwise direction with respect to the pressing lever connecting arm 6, so that the height between the pressing lever 7 and the opening plate 8 and the bottom surface is increased, the soil cutting force of the opening plate 8 is relatively increased, the opened fertilizing ditch is relatively deep, and after each adjustment, the pair of positioning locking claws 922 should be returned to the locking claw holes 48. Because the actuating lever action block 93 has a set of action surfaces 933 of the actuating lever of the press wheel connecting arm in the circumferential direction or the peripheral direction of the actuating lever action block 93, the fertilizing furrows formed by the furrowing disc 8 can be changed by adjusting the action surfaces in the manner. Therefore, the utility model overcomes the prejudice in the prior art, and initiatively abandons the mode of adjusting the soil cutting force of the ditching disc by using a spring in the structural system of the soil cutting force adjusting device assembly 9 of the ditching disc, thereby embodying the technical effect recorded in the technical effect column of the applicant.

Please refer to fig. 5, fig. 5 is a use status after the assembly of fig. 2, in a scene of actual use, the utility model is drawn by a traction device or called traction power, and the frame 1 can be used as a carrier, and a seeding device and a soil covering device (also called soil returning device) are arranged at the rear of the press wheel 7 and the ditching disc 8 (taking the advancing direction of the traction device in the use status as an example) to embody the integrated effect of ditching, fertilizing, seeding and soil covering.

To sum up, the technical scheme provided by the utility model makes up the defects in the prior art, successfully completes the invention task, and faithfully realizes the technical effects of the applicant in the technical effect column.

Claims

1. A ditching disc soil cutting force adjusting device of a gap disc type ditching fertilizer applicator is characterized by comprising a ditching disc soil cutting force adjusting device assembly (9), wherein the ditching disc soil cutting force adjusting device assembly (9) comprises an actuating lever action block connecting pin shaft (91), an adjusting position locking seat (92), an actuating lever action block (93), an actuating lever action block blocking nut (94) and a thrust spring (95), the actuating lever action block connecting pin shaft (91) is arranged on the adjusting position locking seat (92) in a left-right moving mode, a pin shaft milling plane (911) and an actuating lever action block connecting pin shaft threaded head (912) are sequentially formed at the left end of the actuating lever action block connecting pin shaft (91) from right to left, the right end of the actuating lever action block connecting pin shaft (91) is inserted into the adjusting position locking seat cavity (921) of the adjusting position locking seat (92), a connecting pin shaft rotating adjusting head (913) is formed at the right end of the actuating lever action block connecting pin shaft (91), a hexagon socket (9131) is formed at the central position of the right side surface of the connecting pin shaft rotating adjusting head (913), a pair of adjusting position locking claws (922) are formed on the left side surface of the adjusting position locking seat (92), a pair of grasping claws (923) are formed at the right end of the adjusting position locking seat (92), the grasping claws (923) are vertically corresponding to each other, an action block eccentric hole (931) is formed on the actuating lever action block (93), a milling surface matching cavity (932) is formed on the right side surface of the actuating lever action block (93) and at a position corresponding to the action block eccentric hole (931), the milling surface matching cavity (932) is matched with the pin milling surface (911), the actuating lever action block connecting pin shaft threaded head (912) extends to the left side of the actuating lever action block (93) through the action block eccentric hole (931), a group of press wheel connecting arm actuating lever action surfaces (933) are formed on the outer wall of the actuating lever action block (93) in the circumferential direction, the distance from the group of press wheel connecting arm actuating lever action surfaces (933) to the action block eccentric hole (931) is different, the actuating lever action block blocking nut (94) is fixed with the actuating lever action block connecting pin shaft threaded head (912) at a position on the left side of the actuating lever action block (93), a thrust spring (95) is positioned in the actuating lever position locking seat cavity (921) and is sleeved on the right end of the actuating lever action block connecting pin shaft (91), and the left end of the thrust spring (95) is supported on the locking seat cavity (921) at a position to support the left end of the pin shaft connecting pin shaft eccentric hole (921); actuating lever effect piece (93) with the lower surface of press wheel connecting arm actuating lever (64) is corresponding, and a set of press wheel connecting arm actuating lever effect face (933) in arbitrary press wheel connecting arm actuating lever effect face contact with the lower surface of press wheel connecting arm actuating lever (64).

2. The ditching disc soil cutting force adjusting device of the notched disc ditching fertilizer applicator of claim 1, wherein the milling plane fitting cavity (932) is D-shaped.