CN109691270A - The multi-functional straight precision drill of drought of rice - Google Patents

Abstract

A multi-functional dry-straight precision hole-seeding machine for rice includes a frame, a ditching device, a fertilization device, a seeding device, a soil covering device, and a pressing device. The frame is provided with hanging ears to connect with a tractor, and the ditching device , fertilization device, seeding device, soil covering device and suppression device are arranged on the frame, and the ditching device is located at the front end of the frame to open a groove on the ground for holding chemical fertilizers, and the fertilization device is located in the opening the rear of the ditch device to spread chemical fertilizers into the trenches opened by the ditching device, the sowing device is located behind the fertilization device, so that the seeds and the fertilizer are spread in the same position, the soil covering device is located at the rear of the sowing device, The ditch opened by the ditching device is filled and the soil is covered on the seeds, and the compaction device is located behind the soil-covering device to compact the soil-covered land.

Description

The multi-functional straight precision drill of drought of rice

Technical field

The present invention relates to Rice Cropping technical field more particularly to a kind of multi-functional straight precision drills of drought of rice.

Background technique

The planting patterns of rice has drought kind and rice transplanting two ways.Dry seeded rice be dry land live streaming a seed type, be by Seed is directly sowed at a kind of planting type in dry land.Dry seeded rice sowing is deeper, does not pour water after broadcasting, generally germinate by soil moisture, It takes root, emerge.After emergence, start to pour water again by a drought long stage.Its advantage is that irrigating, water consumption is few, and site preparation sows base This does not have to water；Generally start to pour water after 4 leaf phases, well developed root system, drought-enduring strong drought resistance；Planting percent of emerging is high, takes root depth, is not easy Lodging.Practice have shown that carrying out fertilising operation while rice growing, be conducive to paddy growth.

In this regard, entitled " the multi-functional straight precision drill of drought of rice ", the middle promulgated by the State Council of Patent No. 201721150905.2 The technical solution of bright patent disclosure are as follows: including traction suspension rack, wheel assembly, hoe shovel type ditching machine with dual and casing mechanism assembly, Seeding cabinet and seeding-apparatus assembly, disk seeder structure and depth of planting adjust assembly, packing wheel assembly.The seeding cabinet And seeding-apparatus assembly includes seed-box, feed mechanism for seed, sow hopper and seeding pipe；The casing mechanism is located at disc type discharge plate tune Save the lower section of beam；The seeding pipe is located at the surface of the disk seeder structure；The disk seeder structure is by being inoculated with Funnel, disc type discharge plate, a point discharge plate form.

The program can sow chemical fertilizer and seed simultaneously, but above scheme can not adjust the depth of trench digging, also inconvenient In replacement and maintenance plough.

Summary of the invention

In view of this, it is necessary to provide one kind can adjust ditching depth, be conveniently replaceable and safeguard that the rice of plough is more The straight precision drill of function drought.

A kind of straight precision drill of multi-functional drought of rice includes rack, ditching device, fertilizer apparatus, seeding apparatus, earthing Device, suppression device, the rack is equipped with hangers, to connect tractor, the ditching device, fertilizer apparatus, seeding apparatus, Covering device, suppression device are arranged on the rack, and the ditching device is located at the front end of rack, outputed on the ground for containing The groove of chemical fertilizer is put, the fertilizer apparatus is located at the rear of ditching device, chemical fertilizer is sprinkled into the groove that ditching device is outputed, The seeding apparatus is located at the rear of fertilizer apparatus, so that seed and chemical fertilizer are spread to same position, the covering device, which is located at, to be broadcast The rear of kind device, the ditch that ditching device is outputed are filled and led up and are covered on soil on seed, and the suppression device, which is located at, to be covered Soil after earthing is compacted by the rear of native device, and the ditching device includes height adjustment bracket, the first fixture, several The upper end of furrow-opening cutter blade, height adjustment bracket is connect by the first fixture with rack, the lower end of height adjustment bracket and ditching knife Piece is detachably connected, and the furrow-opening cutter blade is equipped with the first mounting hole, correspondingly, height adjustment bracket is equipped with the installation matched Slot, the two sides of mounting groove are respectively equipped with second mounting hole, and furrow-opening cutter blade is arranged in mounting groove, and the first mounting hole and the Fixed pin is equipped in two mounting holes, so that height adjustment bracket is fixedly connected with furrow-opening cutter blade.

The utility model has the advantages that rice suppression hill-drop drill of the invention includes rack, ditching device, fertilizer apparatus, seeding apparatus, covers Native device, suppression device, the ditching device includes height adjustment bracket, the first fixture, several furrow-opening cutter blades, height adjustment branch The upper end of frame is connect by the first fixture with rack, and lower end and the furrow-opening cutter blade of height adjustment bracket are detachably connected, described to open Ditch blade is equipped with the first mounting hole, correspondingly, height adjustment bracket is equipped with the mounting groove matched, the two sides difference of mounting groove Equipped with second mounting hole, furrow-opening cutter blade is arranged in mounting groove, and is equipped with and fixes in the first mounting hole and the second mounting hole Pin, by the fixation of the first fixture, can change furrow-opening cutter blade trench digging so that height adjustment bracket is fixedly connected with furrow-opening cutter blade Depth, when needing replacing furrow-opening cutter blade, take out fixed pin replacement.

Detailed description of the invention

Fig. 1 is the structural schematic diagram at an angle of depression of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 2 is the structural schematic diagram at another angle of depression of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 3 is the structural schematic diagram at the elevation angle of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 4 is the sectional block diagram of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 5 is the view at the local elevation angle of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 6 is the side view of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 7 is the straight trailing bar of precision drill of the multi-functional drought of rice of the invention and the connection figure of height adjustment bracket.

Fig. 8 is the structural schematic diagram of another better embodiment of the straight precision drill of the multi-functional drought of rice of the invention.

Fig. 9 is the knot of the fertilising state of another better embodiment of the straight precision drill of the multi-functional drought of rice of the invention Structure schematic diagram.

Figure 10 is the sowing state of another better embodiment of the straight precision drill of the multi-functional drought of rice of the invention Structural schematic diagram.

In figure: the straight precision drill 10 of the multi-functional drought of rice, rack 20, ditching device 30, height adjustment bracket 301, the One fixture 302, furrow-opening cutter blade 303, fertilizer apparatus 40, fertilizing box 401, fertilising roller 402, fertilizer guiding tube 403, trailing bar 404, Seeding apparatus 50, Seeding box 501, seed rice guiding tube 503, sow wheel 504, pressing wheel mechanism 505, first connecting rod at roller 502 of sowing seeds 5051, second connecting rod 5052, spring 5053, covering device 60, hold together ditch part 601, suppression device 70, suppression shaft 701, press wheel 702, graticule mechanism 80, lateral adjustments bar 801, fixing bolt 802, vertical adjustment bar 803, the second fixture 804, graticule wheel 805.

Specific embodiment

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, common for this field For technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 to Fig. 7 is please referred to, a kind of straight precision drill 10 of multi-functional drought of rice includes rack 20, ditching device 30, applies Fertile device 40, seeding apparatus 50, covering device 60, suppression device 70, the rack 20 is equipped with hangers, to connect tractor, The ditching device 30, fertilizer apparatus 40, seeding apparatus 50, covering device 60, suppression device 70 are arranged in rack 20, described Ditching device 30 is located at the front end of rack 20, to output the groove for holding chemical fertilizer, the fertilizer apparatus 40 on the ground In the rear of ditching device 30, chemical fertilizer is sprinkled into the groove that ditching device 30 is outputed, the seeding apparatus 50 is located at fertilising The rear of device 40, so that seed and chemical fertilizer are spread to same position, the covering device 60 is located at the rear of seeding apparatus 50, with The ditch that ditching device 30 is outputed is filled and led up and is covered on soil on seed, after the suppression device 70 is located at covering device 60 Soil after earthing is compacted by side, and the ditching device 30 includes height adjustment bracket 301, the first fixture 302, Ruo Gankai The upper end of ditch blade 303, height adjustment bracket 301 is connect by the first fixture 302 with rack 20, height adjustment bracket 301 Lower end is detachably connected with furrow-opening cutter blade 303, and the furrow-opening cutter blade 303 is equipped with the first mounting hole, correspondingly, height adjustment branch Frame 301 is equipped with the mounting groove matched, and the two sides of mounting groove are respectively equipped with second mounting hole, and the setting of furrow-opening cutter blade 303 exists In mounting groove, and fixed pin is equipped in the first mounting hole and the second mounting hole, so that height adjustment bracket 301 and furrow-opening cutter blade 303 are fixedly connected.

Further, the top and bottom of the furrow-opening cutter blade 303 are respectively equipped with two blades, two blades of the same end Be in the shape of the letter V setting, can ditch always to ground behind the direction in order to adjust furrow-opening cutter blade 303.Due to furrow-opening cutter blade 303 are equipped with blade, and after prolonged use, the hard object in soil can generate abrasion or be collided with to blade.And damp soil It can be adhered on blade, to generate larger resistance during traveling, the groove outputed be made to can not reach expected effect. Four blades are set on furrow-opening cutter blade 303, it can be with a blade cannot be in use, simultaneously by disassembly furrow-opening cutter blade 303 wherein The position of adjustment furrow-opening cutter blade 303 makes a blade face soil in other three blades ditch.

Further, the fertilizer apparatus 40 includes fertilizing box 401, fertilising roller 402, fertilizer guiding tube 403, trailing bar 404, the fertilizing box 401 is arranged in rack 20, if the lower end of fertilizing box 401, which is equipped with, does fertile mouth, the two sides of fertile mouth are set out There is through-hole, fertilising roller 402 is set with fertile muzzle out by the through-hole of fertile mouth out and connect, the diameter for the roller 402 that applies fertilizer and out fertile mouth phase Match, to prevent fertilizer from reserving from fertilising roller 402 and the gap gone out between fertile mouth, fertilising roller 402 is equipped with several grooves, and apply fertilizer roller 402 fertilizer is discharged from the groove of fertilising roller 402 during rotation, and the entrance of fertilizer guiding tube 403 is located at fertilising roller 402 Groove underface, fertilizer guiding tube 403 outlet be located at furrow-opening cutter blade 303 dead astern, fertilizer is sowed and is being ditched In the groove that blade 303 is outputed, trailing bar 404 is located at the rear end of the outlet of fertilizer guiding tube 403, and the setting of trailing bar 404 exists On height adjustment bracket 301, fertilizer is covered into upper soil.

Further, the seeding apparatus 50 includes Seeding box 501, roller 502 of sowing seeds, seed rice guiding tube 503, sows wheel 504, the Seeding box 501 is arranged in rack 20, if the lower end of Seeding box 501, which is equipped with, does kind of a mouth, the two sides for planting mouth out are set There is through-hole, roller 502 of sowing seeds, which is set by the through-hole of kind of mouth out with kind of a muzzle out, to be connect, the diameter for roller 502 of sowing seeds and 502 phase of roller of sowing seeds Matching, to prevent seed rice from roller 502 is sowed seeds and the gap that goes out between kind of mouth is flowed out, roller 502 of sowing seeds is equipped with several grooves, sows seeds Fertilizer is discharged from the groove for sowing seeds roller 502 during rotation for roller 502, and the entrance of seed rice guiding tube 503 is located at roller of sowing seeds The outlet of the underface of 502 groove, seed rice guiding tube 503 is connected to the entrance for sowing wheel 504, sows the entrance position of wheel 504 In on the side wall at center for sowing wheel 504, channel is sowed equipped with several in the inside for sowing wheel 504, and it is radial to sow channel Even be distributed in is sowed on wheel 504, and the outer end for sowing channel extends to the end face for sowing wheel 504, when sow the outlet in channel with When ground face contact, seed rice is fallen to the ground from channel is sowed, and the dead astern that wheel 504 is located at furrow-opening cutter blade 303 is sowed, by seed rice It sows in the groove that fertilising is outputed with the furrow-opening cutter blade 303 after earthing.

It is 201820307392.X about the specific structure of wheel is sowed in number of patent application, it is entitled " a kind of using injection molding It is stated that therefore no longer repeating in the utility model patent of molding disc type rice precision drill ".

Further, the seeding apparatus 50 further includes pressing wheel mechanism 505, and the pressing wheel mechanism 505 includes first connecting rod 5051, second connecting rod 5052, spring 5053, the first end and rack 20 of the first connecting rod 5051 are hinged, first connecting rod 5051 Middle-end with sow wheel 504 shaft be rotatablely connected, the second end of first connecting rod 5051 and the lower end of second connecting rod 5052 are hinged, Second connecting rod 5052 is also arranged with spring 5053 and connect, and the upper end of second connecting rod 5052 is connect with rack 20, and spring 5053 is located at Between first connecting rod 5051 and rack 20 and it is in compressive state, the upper end of spring 5053 is contacted with rack 20, spring 5053 Lower end is contacted with first connecting rod 5051, to generate pressure to first connecting rod 5051, make to sow wheel 504 in the process of walking always with Ground face contact.

Further, if the covering device 60 includes interference ditch part 601, the quantity and furrow-opening cutter blade of the furrow part 303 quantity is identical, and the upper end for holding together ditch part 601 is fixedly connected with rack 20, and the middle part of furrow part is 5053 body of spring, with basis The fluctuating of topography adjusts the angle of ditch part 601 and ground, to enable to hold together the bottom end of ditch part 601 to keep connecing with ground always Touching, hold together the bottom of ditch part 601 be it is forked, the groove that furrow-opening cutter blade 303 is outputed is closed up and by seed rice earthing.

Soil after closing up under normal circumstances can be in the intermediate protrusion for forming mound shape, and soil surface is more empty, influences seed rice Emergence.Simultaneously because ground height is different, it is therefore desirable to carry out unloading power by 5053 body of spring held together on ditch part 601, make to hold together ditch The bottom of part 601 is kept in contact with ground, while avoiding the bottom of ditch part 601 from being inserted into soil.Due to holding together the bottom of ditch part 601 It is in forked for holding, and holds together the soil that ditch part 601 can make intermediate soil be more than two sides after the groove for outputing furrow-opening cutter blade 303 closes up Earth, to form mound.Seed needs air in germination process, and the soil for forming mound is unfavorable for seed and breathes freely, and unfavorable It is attached on soil in seed, so that the sprouting of seed be made to have an impact.Therefore, further, the suppression device 70 includes Suppress shaft 701, press wheel 702, the suppression shaft 701 is arranged with press wheel 702 to be connect, suppression shaft 701 both ends and The both ends of rack 20 are rotatablely connected, and suppression shaft 701 is also connect with fertilising roller 402 and 502 chain conveyer of roller of sowing seeds, so that suppression fills It sets and drives fertilising roller 402 in 70 rotation processes and the rotation of roller 502 of sowing seeds.

Further, the rice suppression hill-drop drill further includes graticule mechanism 80, to demarcate the straight essence amount of the multi-functional drought of rice The position of hill-drop drill 10, the graticule mechanism 80 include lateral adjustments bar 801, fixing bolt 802, vertical adjustment bar 803, second Fixture 804, graticule wheel 805, one end of the lateral adjustments bar 801 is arranged with rack 20 to be connect, lateral adjustments bar 801 and suppression Shaft 701 is parallel, and rack 20 is equipped with threaded hole, and fixing bolt 802 is arranged with the threaded hole of rack 20 and connect, and fixing bolt 802 one end is contacted with lateral adjustments bar 801, to keep lateral adjustments bar 801 and rack 20 fixed by rotary fixing screw bolt 802 The second end of connection, lateral adjustments bar 801 is fixedly connected with the upper end of vertical adjustment bar 803 by the second fixture 804, vertical to adjust The lower end of pole 803 is fixedly connected with the shaft of graticule wheel 805, when the straight precision drill 10 of the multi-functional drought of rice is walked, mark Line wheel 805 carries out marking to ground.

The multi-functional straight precision drill 10 of drought of rice of the invention when in use, adjust height adjustment bracket 301 with After the relative altitude of rack 20, height adjustment bracket 301 is fixedly connected with rack 20 with the first fixture 302.Then rack is used 20 hangers is connect with tractor.The lateral adjustments bar 801 for adjusting graticule mechanism 80, makes position and the tractor of graticule wheel 805 Width be adapted.When tractor is walked, furrow-opening cutter blade 303 first ditches to ground, and then fertilizer apparatus 40 broadcasts fertilizer Be spread in the groove that furrow-opening cutter blade 303 is outputed, using fertilizer apparatus 40 followed by trailing bar 404 by fertilizer shallow embedding.Follow it closely Seeding apparatus 50 afterwards spreads seed on the ground by sowing wheel 504.The forked bottom of subsequent covering device 60 can incite somebody to action Groove after trench digging closes up again.Mound after finally the press wheel 702 of suppression device 70 will close up again flattens.Tractor is expert at It will drive during walking and sow wheel 504 and the suppression rotation of device 70.Due to suppression device 70 be with fertilising roller 402 and roller of sowing seeds The connection of 502 chain conveyers, when suppression device 70 rotates, fertilising roller 402 and roller 502 of sowing seeds can be rotated synchronously, thus make fertilizer and Seed enters guiding tube along fertilising roller 402 and the groove on roller 502 of sowing seeds.

Fig. 8 to Figure 10 is please referred to, in practical work process, if only needing that soil is sowed or applied fertilizer, Fertilizer apparatus 40 or seeding apparatus 50 are used as needed.In independent fertilising or sowing, for the weight of alleviator, Oil consumption is reduced, fertilizer apparatus 40 can be disassembled, fertilizer or seed rice are loaded in Seeding box 501.If will be in Seeding box 501 It loads chemical fertilizer to apply fertilizer, then the lower end by seed rice guiding tube 503 is just needed to be inserted into the position of fertilizer guiding tube 403, make Fertilizer enters soil from the front of trailing bar 404.Or sowed or applied fertilizer by Seeding box and fertilizing box and for one, it sows Or the mode of fertilising is identical as foregoing description.Above two mode of texturing also belongs to protective scope of the claims of the invention.

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and wants according to right of the present invention Made equivalent variations is sought, is still belonged to the scope covered by the invention.

Claims (8)

1. a rice multifunctional dry straight precision hole planter, is characterized in that: comprise rack, ditching device, fertilization device, seeding device, soil-covering device, repressing device, described rack is provided with hanging ears, to connect Tractor, the ditching device, fertilization device, seeding device, soil covering device, and pressing device are arranged on the frame, and the ditching device is located at the front end of the frame, so as to open a groove on the ground for holding chemical fertilizers , the fertilization device is located at the rear of the ditching device to spread chemical fertilizers into the grooves opened by the ditching device, the sowing device is located behind the fertilization device, so that the seeds and the fertilizer are spread to the same position, and the covering soil The device is located behind the sowing device to fill the trench opened by the ditching device and cover the soil on the seeds, the compaction device is located behind the soil-covering device to compact the soil after the ditching device, the ditching device It includes a height adjustment bracket, a first clamp, and a plurality of ditching blades. The upper end of the height adjustment bracket is connected to the frame through the first clamp, and the lower end of the height adjustment bracket is detachably connected to the ditching blade. There is a first installation hole, correspondingly, the height adjustment bracket is provided with a matching installation slot, two sides of the installation slot are respectively provided with a second installation hole, the grooving blade is arranged in the installation slot, and the first installation hole and the second installation hole are arranged. There are fixing pins in the two installation holes, so that the height adjustment bracket and the ditching blade are fixedly connected. 2. The rice multifunctional dry-straight precision hole-seeding machine as claimed in claim 1 is characterized in that: the upper end and the lower end of the grooving blade are respectively provided with two cutting edges, and the two cutting edges at the same end are arranged in a V-shape, so that the The ground can always be grooved after adjusting the direction of the grooving blade. 3. The rice multifunctional dry-straight-precision hole-seeding machine according to claim 1, wherein the fertilization device comprises a fertilization box, a fertilization roller, a fertilizer guide pipe, and a soil-covering plate, and the fertilization box is arranged on the frame , the lower end of the fertilization box is provided with a number of fertilization nozzles, the two sides of the fertilization nozzle are provided with through holes, the fertilization roller is sleeved and connected to the fertilizer nozzle through the through holes of the fertilizer nozzle, and the diameter of the fertilization roller matches the fertilizer nozzle. , to prevent the fertilizer from leaving the gap between the fertilizing roller and the fertilizing nozzle. There are several grooves on the fertilizing roller. The fertilizer is discharged from the groove of the fertilizing roller during the rotation of the fertilizing roller. The entrance of the fertilizer guide pipe is located at Just below the groove of the fertilizing roller, the outlet of the fertilizer guide pipe is located directly behind the grooving blade to spread fertilizer in the groove opened by the grooving blade, the soil cover plate is located at the rear end of the outlet of the fertilizer guide pipe, and The soil cover plate is set on the height adjustment bracket to cover the fertilizer with soil. 4. The rice multifunctional dry-straight precision hole planter according to claim 1, characterized in that: the sowing device comprises a seeding box, a seeding roller, a rice seed guide pipe, and a sowing wheel, and the seeding box is arranged on the machine On the frame, the lower end of the seeding box is provided with a number of seed nozzles, the two sides of the seed nozzle are provided with through holes, and the seeding roller is sleeved and connected to the seed nozzle through the through holes of the seed nozzle. The seed rollers are matched to prevent the rice seeds from flowing out from the gap between the seed roller and the seed nozzle. There are several grooves on the seed roller, and the seed roller will release the fertilizer from the groove of the seed roller during the rotation process. Discharge, the entrance of the rice seed guide pipe is located just below the groove of the seeding roller, the outlet of the rice seed guide pipe is communicated with the entrance of the sowing wheel, the entrance of the sowing wheel is located on the side wall of the center of the sowing wheel, and the inside of the sowing wheel is There are several spreading channels, which are evenly distributed on the spreading wheel radially, and the outer end of the spreading channel extends to the end face of the spreading wheel. When the outlet of the spreading channel contacts the ground, the rice seeds fall from the spreading channel to the ground. The spreading wheel is located directly behind the trenching blades to spread rice seeds into the trenches opened by the trenching blades after fertilization and mulching. 5. The rice multifunctional dry-straight precision hole-seeding machine according to claim 4, wherein the seeding device further comprises a pressing wheel mechanism, and the pressing wheel mechanism comprises a first connecting rod, a second connecting rod, a spring , the first end of the first link is hinged with the frame, the middle end of the first link is rotatably connected with the rotating shaft of the spreading wheel, the second end of the first link is hinged with the lower end of the second link, the second The connecting rod is also sleeved and connected with the spring, the upper end of the second connecting rod is connected with the frame, the spring is located between the first connecting rod and the frame and is in a compressed state, the upper end of the spring is in contact with the frame, and the lower end of the spring is in contact with the first connecting rod and the frame. The connecting rod is in contact to generate pressure on the first connecting rod, so that the spreading wheel is always in contact with the ground during the walking process. 6. The multifunctional dry-straight-precision hole-seeding machine for rice as claimed in claim 1, wherein the soil covering device comprises a plurality of furrowing pieces, and the number of the furrowing pieces is the same as that of the ditching blades, and the furrowing pieces The upper end of the ditch is fixedly connected to the frame, and the middle of the ditch is a spring body to adjust the angle between the ditch and the ground according to the fluctuation of the terrain, so that the bottom end of the ditch can always keep in contact with the ground, and the bottom of the ditch can be kept in contact with the ground. Fork shape to close the grooves made by the grooving blade and cover the rice seeds with soil. 7. The rice multifunctional dry-straight-precision hole-seeding machine as claimed in claim 3 or 4, characterized in that: the suppressing device comprises a suppressing rotating shaft and a suppressing wheel, the suppressing rotating shaft and the suppressing Both ends are rotatably connected with the two ends of the frame, and the repression shaft is also connected with the fertilization roller and the seeding roller chain, so that the fertilizing roller and the seeding roller are driven to rotate during the rotation of the repressing device. 8. The rice multifunctional dry-straight precision-measured hole-seeding machine as claimed in claim 1, characterized in that: the rice-pressed hole-seeker further comprises a marking mechanism, to demarcate the position of the rice-based multi-functional dry-straight-precision hole-seeker, so that the The marking mechanism includes a horizontal adjustment rod, a fixing bolt, a vertical adjustment rod, a first clamp, and a marking wheel. There are threaded holes on it, the fixing bolts are sleeved and connected with the threaded holes of the frame, and one end of the fixing bolts is in contact with the lateral adjustment rod, so that the lateral adjustment rod can be fixedly connected with the frame by rotating the fixing bolts. The end is fixedly connected with the upper end of the vertical adjusting rod through the first clamp, and the lower end of the vertical adjusting rod is fixedly connected with the rotating shaft of the marking wheel. dash marks.