Disc harrow shaft seat

Abstract

The invention discloses a disc harrow shaft seat, and belongs to the technical field of disc harrows. Comprising a cast iron shaft seat, a radial load guide unit, a composite load unit, a limiting table, an end mandrel guide piece and a middle mandrel, and a flange seat is integrally manufactured at the top of the cast iron shaft seat; flange rings are integrally manufactured at the two ends of the cast iron shaft seat; a plurality of positioning blocks are integrally manufactured in the middle of the inner side of the cast iron shaft seat, and a plurality of limiting blocks are integrally manufactured on the cast iron shaft seat and located on the two sides of the positioning blocks. Screw holes are formed in the end parts of the positioning block and the limiting block; the radial load guide unit is clamped and fixed at the positioning block; the combined load unit is connected between the positioning block and the limiting block in an abutting mode. The disc harrow shaft seat can be directly installed in the middle of a disc harrow main shaft, the disc harrow main shaft is supported and guided, the radial load guiding unit conducts core fixing on the middle of the middle core shaft all the time, the axial impact force of the middle core shaft is directly borne through the roller array, and the middle core shaft rotates stably.

Description

Technical Field

[0001] The present invention specifically relates to a disc harrow axle seat, belonging to the technical field of disc harrows. Background Art

[0002] In the prior art, nylon tile axle seats are generally selected for disc harrow axle seats. Although they have good water and soil resistance, their durability is not high and they cannot bear axial forces. Although oil seal protection devices are installed on spherical plain bearings and ordinary radial ball bearings, the waterproof and anti-soil effects are not very ideal. Since the axial force and radial force are very large during the operation of the harrow machine, the durability cannot meet the requirements either. For this reason, Chinese Patent Grant Publication No.: CN103527642B discloses a disc harrow axle seat, which includes ears connected to the harrow body outside the housing, left and right hand threads at both ends inside the housing, a mandrel inside the housing, a flange in the middle of the mandrel, tapered roller bearings installed on both sides of the flange, and the tapered roller bearings with tapers are assembled facing each other; double oil seals are installed on the inner sides of the left-hand gland and the right-hand gland, and sealing rings are installed on the outer sides, and then they are sleeved on the mandrel and connected to the tapered roller bearings respectively; and the left-hand gland and the right-hand gland are screwed onto the left and right hand threads of the housing; this structure can reduce the maintenance and repair during production work. However, when the above structure is subjected to axial force, an impact occurs between the middle of the mandrel and the tapered roller bearing, and a slight deformation occurs on the outer edge of the middle of the mandrel, which will directly cause the main shaft of the disc harrow to rotate stuck. When the deformation amount is too large, the mandrel will be directly locked. In addition, the rotation of the mandrel is guided by the tapered roller bearing throughout the process, which is likely to cause hard friction and wear between the mandrel and the tapered roller bearing; in addition, due to the influence of the perforation structure of the mandrel, the tapered roller bearing of the above structure is directly fitted and installed with the end of the disc harrow main shaft. Since a row of disc harrows need to be installed on the main shaft of the disc harrow and the main shaft is relatively long, during operation, it bears the impact force of all the disc harrows on the main shaft. For this reason, if only a bearing assembly is installed at the end of the main shaft, the main shaft will deform in the middle due to factors such as length and the impact load of the disc harrows, or cause eccentric wear of one of the bearing assemblies at both ends. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a disc harrow axle seat, which can be directly installed in the middle of the disc harrow main shaft to support and guide the disc harrow main shaft. The radial load guiding unit always centers the middle of the intermediate mandrel, and directly bears the axial impact force of the intermediate mandrel through the roller array, so that the intermediate mandrel rotates smoothly.

[0004] The disc harrow axle seat of the present invention includes: Cast iron shaft seat, a flange seat is integrally formed on the top of the cast iron shaft seat; flange rings are integrally formed at both ends of the cast iron shaft seat; a plurality of positioning blocks are integrally formed in the middle of the inner side of the cast iron shaft seat, and a plurality of limiting blocks are integrally formed on both sides of the positioning blocks of the cast iron shaft seat; screw holes are provided at the ends of the positioning blocks and the limiting blocks; Radial load guiding unit, the radial load guiding unit is clamped and fixed at the positioning block; Composite load unit, the composite load unit abuts between the positioning block and the limiting block; a reduced diameter port is provided inside the composite load unit; a roller array is rotatably arranged inside the reduced diameter port; Limiting platform, the limiting platform includes a flange disc seat fixed to the end of the limiting block, a top pressure ring seat is integrally formed at one end of the flange disc seat, a limiting clamping seat is integrally formed at the other end of the flange disc seat, and the top pressure ring seat is clamped with the outer wall of the composite load unit; End core shaft guiding member, the end core shaft guiding member includes a sealing end fixed to the flange ring, a ball bearing is embedded inside the sealing end; the top pressure ring seat abuts against the outer sleeve of the ball bearing; the flange disc seat abuts against the sealing end; an end core shaft is movably embedded from the outside to the inside at the center of the sealing end, a sealing disc is integrally formed outside the end core shaft, and a plurality of pressure rings that are in rolling fit with the outside of the sealing end are integrally formed inside the sealing disc; a limiting guide ring is fixed to the outside of the end core shaft through a counterbore bolt, and the limiting guide ring abuts against the rotating end of the ball bearing; Intermediate core shaft, the intermediate core shaft respectively rolls and abuts against the inside of the radial load guiding unit and the roller array; the intermediate core shaft and the end core shaft pass through the disc harrow shaft, and are integrally fastened through a limiting bolt.

[0005] During assembly, first assemble the end core shaft guiding member, embed the end core shaft into the center of the sealing end, and make the pressure ring of the sealing disc in rolling alignment with the outside of the sealing end; then embed the ball bearing inside the sealing end, sleeve a limiting guide ring outside the end core shaft, and fix the limiting guide ring to the end core shaft. At this time, the limiting guide ring and the rotating end of the ball bearing abut, and the assembly of the end core shaft guiding member is completed; then, clamp and fix the radial load guiding unit at the positioning block, then pass the intermediate core shaft through the inside of the radial load guiding unit, and install the composite load unit inside the cast iron shaft seat so that the composite load unit abuts against the intermediate core shaft; when it is necessary to install the disc harrow shaft seat in the middle of the disc harrow shaft (the main shaft of the disc harrow), first disassemble the disc harrow, pass the disc harrow shaft through the two end core shafts and the intermediate core shaft, then, fasten the intermediate core shaft and the disc harrow shaft into one body through a limiting bolt; and clamp the limiting clamping seat of the limiting platform with the outer wall of the composite load unit, and fix the limiting platform to the limiting block through a counterbore bolt; then, butt and integrally clamp the ends of the end core shaft and the intermediate core shaft; and fasten the end core shaft and the disc harrow shaft into one body through a limiting bolt; finally, fix the sealing end and the flange ring through bolts to complete the assembly of the disc harrow shaft seat.

[0006] Further, the intermediate mandrel includes a first straight section that is in rolling fit with the radial load guiding unit. At both ends of the first straight section, there are integrally formed reduced-diameter sections that are in rolling fit with the roller array. At the end of the reduced-diameter section, there is integrally formed a second straight section. At the ends of the second straight section and the end mandrel that are close to each other, there are engaged card slots. On the second straight section and the end mandrel, there are a plurality of counterbores, and the limit bolts are screwed into the counterbores and fixed to the keyway of the disc harrow shaft. The first straight section serves as the central section of the intermediate mandrel, and in cooperation with the radial load guiding unit, it realizes rotational guidance and radial load support. Reduced-diameter sections are arranged on both sides of the first straight section, and through the roller array, axial limit can be achieved at both ends of the intermediate mandrel, as well as resistance to axial impact and auxiliary rotational guidance. The second straight section and the end mandrel cooperate to assemble the central mandrel and the end mandrel into one body. During installation, the main shaft of the disc harrow is inserted into the intermediate mandrel and the end mandrel, and is fastened to the keyway of the disc harrow shaft through the limit bolts to form a whole. When the disc harrow shaft rotates, the intermediate mandrel and the end mandrel rotate synchronously.

[0007] Further, a collar is sleeved outside the second straight section and the end mandrel at the card slot. The collar can be fitted outside the card slot to assemble the second straight section and the end mandrel into one body. The collar can rotate along the center of the limiting platform.

[0008] Further, the radial load unit includes a radial load bearing. An opening groove is provided outside the radial load bearing, and the opening groove is fitted with a positioning block. At both ends of the positioning block, there are ring plate seats fixed by bolts, and the ring plate seats are in contact with the outer ring of the radial load bearing. A first sliding opening for the movable passage of the limiting block is provided on the ring plate seat. During installation, the opening groove and the positioning block are fitted, and the positioning block performs circumferential limit on the radial load bearing. Then, the ring plate seat is fixed outside the positioning block through bolts, and the ring plate seat can encapsulate both ends of the radial load bearing to achieve axial limit on the radial load bearing.

[0009] Furthermore, the composite load unit comprises a top pressure column, which is abutted between the positioning block and the limit block; a reduced diameter opening is provided on the inner side of the top pressure column; a roller array arranged in a reduced diameter shape is provided on the inner side of the reduced diameter opening; a second sliding opening that can movably pass through the limit block is provided on the outer side of the top pressure column; the second sliding opening first slides through the limit block, and then the second sliding opening and the limit block are rotated and misaligned, and finally the limit clamp is engaged with the second sliding opening; when the top pressure column is installed, the second sliding opening of the top pressure column is slid through the limit block, so that the top pressure column can pass through the second sliding opening smoothly. Then, the top pressure column is rotated again to make the second sliding opening disengage from the limiting block, so that the limiting clamping seat can smoothly enter the second sliding opening; thereby, the top pressure column is restricted between the positioning block and the limiting block, and the axial movement of the top pressure column can be prevented. The limiting block is supported by the limiting platform and the end cap, and the limiting clamping seat can limit the circumferential rotation of the top pressure column; the circumferential and axial limitation of the top pressure column is achieved; a reduced diameter opening is opened inside the top pressure column to serve as the axial impact and radial impact of the middle core shaft; a roller array is arranged inside the reduced diameter opening to receive the impact force of the middle core shaft and assist in rotation guidance.

[0010] Furthermore, the roller array includes a retaining frame on which cylindrical rollers are rotatably arranged; the cylindrical rollers are respectively abutted between the intermediate core shaft and the reduced diameter opening; the cylindrical rollers are clamped by the retaining frame and fed into the reduced diameter opening, and then the intermediate core shaft is embedded in the retaining frame, so that the cylindrical rollers are clamped between the reduced diameter opening and the slope surface of the intermediate core shaft; the intermediate core shaft is rotated along the cylindrical rollers, and the axial impact force of the intermediate core shaft can be transmitted to the cylindrical rollers.

[0011] Furthermore, the retaining frame includes a first ring seat and a second ring seat, and the first ring seat and the second ring seat are integrally formed with a plurality of positioning pins on one side close to each other, and guide holes are opened at the centers of both ends of the cylindrical roller, and the guide holes and the positioning pins are rollingly installed; a connecting column is fixed between the first ring seat and the second ring seat and the cylindrical roller; the cylindrical roller can be directly clamped by the retaining frame, and during installation, the retaining frame and the cylindrical roller can be automatically assembled into one, so during assembly, a stretched retaining frame is formed by fixing the first ring seat, the second ring seat and the connecting column, and the positioning pins of the first ring seat and the second ring seat clamp the two ends of the cylindrical roller and allow the cylindrical roller to rotate freely; during assembly, the retaining frame carrying the cylindrical roller is directly sent to the inner side of the reduction port, and due to the action of the retaining frame, the cylindrical roller is prevented from escaping from the reduction port, so that the slope surface of the intermediate core shaft can be accurately aligned with the cylindrical roller.

[0012] Furthermore, the radial load bearing is a self-aligning bearing, which can accept the radial impact force of the intermediate core shaft and can automatically align the intermediate core shaft to ensure the linearity of the intermediate core shaft rotation, avoid increasing the resistance of the disc harrow main shaft and reduce the wear of the intermediate core shaft.

[0013] Furthermore, a plurality of supporting blocks are integrally formed on the top of the cast iron shaft seat, and the flange seat is integrally formed on the top of the supporting blocks; an oil injection through hole is formed between the supporting blocks of the cast iron shaft seat; a sealing plate is welded outside the supporting blocks; an oil replenishing screw hole is formed on the sealing plate, and a packaging bolt is screwed on the oil replenishing screw hole; an oil storage chamber is formed by the cast iron shaft seat, the supporting blocks and the flange seat. After the oil storage chamber is filled with oil, the lubricating oil enters the inside of the cast iron shaft seat through the oil injection through hole to lubricate the radial load guiding unit and the composite load unit; when oil needs to be replenished, the packaging bolt is unscrewed, and oil is replenished into the oil storage chamber through the oil replenishing screw hole; after the oil replenishment is completed, the packaging bolt is tightened again.

[0014] Furthermore, two mutually engaging first open covers and second open covers are fixed outside the sealing end on the sealing disc; the first open cover has an upward opening, and the second open cover has a downward opening; the first open cover is arranged inside the second open cover; a scraper is fixed at the end of the first open cover to the second open cover, and the scraper fits the outer edge of the sealing disc; the first open cover and the second open cover are mutually engaged and cover the outside of the sealing disc, so that the sealing disc and the end core shaft can rotate freely. When the end core shaft is wrapped with soil, the soil outside the end core shaft can be scraped off by the scraper to avoid being brought into the inside of the sealing disc.

[0015] Compared with the prior art, the disc harrow shaft seat of the present invention can be directly installed in the middle of the main shaft of the disc harrow to support and guide the main shaft of the disc harrow, realize three-point support for the main shaft of the disc harrow, and avoid deformation in the middle of the main shaft or eccentric wear of a certain bearing assembly; the radial load guiding unit is used as the main rotation guiding, which can continuously center the middle of the middle core shaft, and composite load units are arranged on both sides of the radial load guiding unit to realize auxiliary rotation guiding, which can ensure the rotation linearity and rotation stability; slope structures are arranged on both sides of the middle core shaft and are in direct contact with the roller array of the composite load unit. When the shaft seat is axially impacted, the impact force is directly transmitted to the roller array, and the middle core shaft will not be deformed, so that the middle core shaft rotates smoothly; and through the cooperation of the sealing end, the end core shaft and the sealing disc, the two ends of the cast iron shaft seat are encapsulated, having the effects of waterproof and anti-soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the disc harrow shaft seat of the present invention.

[0017] Figure 2 It is a schematic diagram of the installation structure of the disc harrow shaft seat of the present invention and the sealing plate.

[0018] Figure 3 It is a schematic diagram of the partial sectional structure of the disc harrow shaft seat of the present invention.

[0019] Figure 4 It is a schematic diagram of the sectional structure of the cast iron shaft seat of the present invention along the positioning block.

[0020] Figure 5 Schematic cross-sectional structure diagram of the cast iron shaft seat of the present invention along the limiting block

[0021] Figure 6 Schematic structure diagram of the radial load bearing of the present invention

[0022] Figure 7 Schematic structure diagram of the ring plate seat of the present invention

[0023] Figure 8 Schematic structure diagram of the pressing column of the present invention

[0024] Figure 9 Schematic structure diagram of the limiting platform of the present invention

[0025] Figure 10 Schematic structure diagram of the intermediate mandrel of the present invention

[0026] Figure 11 Schematic structure diagram of the intermediate mandrel of the present invention

[0027] Figure 12 Schematic structure diagram of the installation of the first opening cover, the second opening cover and the scraper on the disc harrow shaft seat of the present invention

[0028] Reference numerals: 1, cast iron shaft seat; 2, flange seat; 3, flange ring; 4, positioning block; 5, limiting block; 6, reduced diameter opening; 7, roller array; 8, limiting platform; 9, flange plate seat; 10, pressing ring seat; 11, limiting clamping seat; 12, sealing end; 13, ball bearing; 14, end mandrel; 15, sealing disc; 16, pressing ring; 17, limiting guide ring; 18, intermediate mandrel; 19, first straight section; 20, reduced diameter section; 21, second straight section; 22, clamping groove; 23, limiting bolt; 24, radial load bearing; 25, opening groove; 26, ring plate seat; 27, first sliding opening; 28, pressing column; 29, second sliding opening; 30, cage; 31, cylindrical roller; 32, first ring seat; 33, second ring seat; 34, positioning pin column; 35, connecting column; 36, supporting block; 37, oil injection through hole; 38, sealing plate; 39, packaging bolt; 40, first opening cover; 41, second opening cover; 42, scraper Detailed implementation manners

[0029] Example: As Figures 1 to 12 shown, the disc harrow shaft seat includes: A cast iron shaft seat 1, a flange seat 2 is integrally formed at the top of the cast iron shaft seat 1; flange rings 3 are integrally formed at both ends of the cast iron shaft seat 1; a plurality of positioning blocks 4 are integrally formed in the middle of the inner side of the cast iron shaft seat 1, and a plurality of limiting blocks 5 are integrally formed on both sides of the positioning blocks 4 of the cast iron shaft seat 1; screw holes are provided at the ends of the positioning blocks 4 and the limiting blocks 5 A radial load guiding unit, which is clamped and fixed at the positioning block 4; A composite load unit, which abuts between the positioning block 4 and the limit block 5; a reduced-diameter port 6 is arranged inside the composite load unit; a roller array 7 is rotatably arranged inside the reduced-diameter port 6; A limit platform 8, which includes a flange seat 9 fixed to the end of the limit block 5. One end of the flange seat 9 is integrally formed with a pressing ring seat 10, and the other end of the flange seat 9 is integrally formed with a limit clamping seat 11. The pressing ring seat 10 is engaged with the outer wall of the composite load unit; An end spindle guiding member, which includes a sealing end 12 fixed to the flange ring 3. A ball bearing 13 is embedded inside the sealing end 12; the pressing ring seat 10 abuts against the outer sleeve of the ball bearing 13; the flange seat 9 abuts against the sealing end 12; an end spindle 14 is movably embedded in the center of the sealing end 12 from outside to inside. A sealing disc 15 is integrally formed outside the end spindle 14, and a plurality of pressing rings 16 that are in rolling fit with the outside of the sealing end 12 are integrally formed inside the sealing disc 15; a limit guiding ring 17 is fixed to the outside of the end spindle 14 by a countersunk bolt, and the limit guiding ring 17 abuts against the rotating end of the ball bearing 13; An intermediate spindle 18, which respectively rolls and abuts against the inside of the radial load guiding unit and the roller array 7; the intermediate spindle 18 passes through the disc harrow shaft inside the end spindle 14 and is integrally fastened by a limit bolt.

[0030] During assembly, first assemble the end spindle 14 guiding member. Embed the end spindle 14 into the center of the sealing end 12, and make the pressing ring 16 of the sealing disc 15 in rolling alignment with the outside of the sealing end 12; then embed the ball bearing 13 inside the sealing end 12, sleeve the limit guiding ring 17 outside the end spindle 14, and fix the limit guiding ring 17 to the end spindle 14. At this time, the limit guiding ring 17 and the rotating end of the ball bearing 13 abut, completing the assembly of the end spindle 14 guiding member; then, clamp and fix the radial load guiding unit at the positioning block 4, then pass the intermediate spindle 18 through the inside of the radial load guiding unit, and install the composite load unit inside the cast iron shaft seat 1, so that the composite load unit abuts against the intermediate spindle 18; when it is necessary to install the disc harrow shaft seat in the middle of the disc harrow shaft (the main shaft of the disc harrow), first disassemble the disc harrow, pass the disc harrow shaft through the two end spindles 14 and the intermediate spindle 18, then, fasten the intermediate spindle 18 and the disc harrow shaft into one body by a limit bolt; and engage the limit clamping seat 11 of the limit platform 8 with the outer wall of the composite load unit, and fix the limit platform 8 to the limit block 5 by a countersunk bolt; then, butt and integrally engage the ends of the end spindle 14 and the intermediate spindle 18; and fasten the end spindle 14 and the disc harrow shaft into one body by a limit bolt; finally, fix the sealing end 12 and the flange ring 3 by bolts to complete the assembly of the disc harrow shaft seat.

[0031] The intermediate mandrel 18 includes a first straight section 19 that rolls and mates with the radial load guiding unit. Reduced-diameter sections 20 that roll and mate with the roller array 7 are integrally formed at both ends of the first straight section 19. A second straight section 21 is integrally formed at the end of the reduced-diameter section 20. Engaging slots 22 are provided at the ends of the second straight section 21 and the end mandrel 14 that are close to each other. A plurality of counterbores are provided on the second straight section 21 and the end mandrel 14, and the limit bolts 23 are screwed into the counterbores. The limit bolts 23 are fixed to the keyway of the disc harrow shaft. The first straight section 19 serves as the central section of the intermediate mandrel 18, and cooperates with the radial load guiding unit to achieve rotational guidance and radial load support. Reduced-diameter sections 20 are provided on both sides of the first straight section 19. The roller array 7 can axially limit both ends of the intermediate mandrel 18, resist axial impact, and assist in rotational guidance. The second straight section 21 and the end mandrel 14 cooperate to assemble the central mandrel and the end mandrel 14 into one body. During installation, the main shaft of the disc harrow is inserted into the intermediate mandrel 18 and the end mandrel 14, and is fastened to the keyway of the disc harrow shaft through the limit bolts 23. When the disc harrow shaft rotates, the intermediate mandrel 18 and the end mandrel 14 rotate synchronously.

[0032] A collar is sleeved outside the second straight section 21 and the end mandrel 14 at the engaging slot 22. The collar can be fitted outside the engaging slot 22 to assemble the second straight section 21 and the end mandrel 14 into one body. The collar can rotate along the center of the limit platform 8.

[0033] The radial load unit includes a radial load bearing 24. An opening slot 25 is provided outside the radial load bearing 24. The opening slot 25 is fitted with the positioning block 4. Ring plate seats 26 are fixed to both ends of the positioning block 4 by bolts. The ring plate seats 26 abut against the outer ring of the radial load bearing 24. A first sliding opening 27 for the movable passing of the limit block 5 is provided on the ring plate seat 26. During installation, the opening slot 25 and the positioning block 4 are fitted, and the positioning block 4 circumferentially limits the radial load bearing 24. Then, the ring plate seats 26 are fixed outside the positioning block 4 by bolts. The ring plate seats 26 can encapsulate both ends of the radial load bearing 24 to axially limit the radial load bearing 24.

[0034] The composite load unit includes a top pressure column 28 which abuts between a positioning block 4 and a limit block 5; a reduced-diameter port 6 is formed inside the top pressure column 28; a roller array 7 arranged in a reduced-diameter shape is provided inside the reduced-diameter port 6; a second sliding port 29 for passing through the limit block 5 movably is formed outside the top pressure column 28; after the second sliding port 29 slides through the limit block 5 first, the second sliding port 29 is then rotated and displaced from the limit block 5, and finally the limit card seat 11 is fitted with the second sliding port 29; when installing the top pressure column 28, the second sliding port 29 of the top pressure column 28 slides through the limit block 5 to enable the top pressure column 28 to pass through the second sliding port 29 smoothly. Then, the top pressure column 28 is rotated to make the second sliding port 29 disengage from the limit block 5, so that the limit card seat 11 can enter the second sliding port 29 smoothly; thus, the top pressure column 28 is restricted between the positioning block 4 and the limit block 5, and axial movement of the top pressure column 28 can be prevented. The limit block 5 is supported by a limit platform 8 and a sealing end 12, and the limit card seat 11 can limit the circumferential rotation of the top pressure column 28; circumferential and axial limitation of the top pressure column 28 is achieved; a reduced-diameter port 6 is formed inside the top pressure column 28 to serve as axial and radial impacts on the intermediate mandrel 18; a roller array 7 is arranged inside the reduced-diameter port 6 to receive the impact force of the intermediate mandrel 18 and assist in rotational guidance.

[0035] The roller array 7 includes a cage 30, and cylindrical rollers 31 are rotatably arranged on the cage 30; the cylindrical rollers 31 respectively abut between the intermediate mandrel 18 and the reduced-diameter port 6; the cylindrical rollers 31 are clamped by the cage 30 and sent into the reduced-diameter port 6. Then, the intermediate mandrel 18 is inserted into the cage 30, so that the cylindrical rollers 31 are clamped between the slope surfaces of the reduced-diameter port 6 and the intermediate mandrel 18; rotation of the intermediate mandrel 18 along the cylindrical rollers 31 is achieved, and the axial impact force of the intermediate mandrel 18 can be transmitted to the cylindrical rollers 31.

[0036] The retainer 30 includes a first ring seat 32 and a second ring seat 33. The first ring seat 32 and the second ring seat 33 are integrally formed with a plurality of positioning pins 34 on one side close to each other. The centers of both ends of the cylindrical roller 31 are provided with guide holes, and the guide holes and the positioning pins 34 are rollingly installed. A connecting column 35 is fixed between the first ring seat 32 and the second ring seat 33 and the cylindrical roller 31. The cylindrical roller 31 can be directly clamped by the retainer 30. During installation, the retainer 30 and the cylindrical roller 31 can be automatically assembled into one. Therefore, During assembly, the retaining frame 30 is fixedly formed by the first ring seat 32, the second ring seat 33 and the connecting column 35. The positioning pins 34 of the first ring seat 32 and the positioning pins 34 of the second ring seat 33 clamp the two ends of the cylindrical roller 31 and allow the cylindrical roller 31 to rotate freely. During assembly, the retaining frame 30 carrying the cylindrical roller 31 is directly sent to the inner side of the reducing port 6. Due to the action of the retaining frame 30, the cylindrical roller 31 is prevented from escaping from the reducing port 6, so that the slope surface of the intermediate core shaft 18 and the cylindrical roller 31 can be accurately aligned.

[0037] The radial load bearing 24 is a self-aligning bearing, which can accept the radial impact force of the intermediate core shaft 18 and automatically align the intermediate core shaft 18 to ensure the linearity of the rotation of the intermediate core shaft 18, avoid increasing the resistance of the disc harrow main shaft and reduce the wear of the intermediate core shaft 18.

[0038] The top of the cast iron shaft seat 1 is integrally formed with a plurality of support blocks 36, and the flange seat 2 is integrally formed on the top of the support block 36; the cast iron shaft seat 1 is provided with oil filling holes 37 between the support blocks 36; a sealing plate 38 is welded to the outside of the support block 36; an oil filling screw hole is provided on the sealing plate 38, and a packaging bolt 39 is screwed on the oil filling screw hole; an oil storage bin is formed by the cast iron shaft seat 1, the support block 36 and the flange seat 2, and when the oil storage bin is filled with oil, the lubricating oil enters the cast iron shaft seat 1 through the oil filling hole 37 to lubricate the radial load guide unit and the compound load unit; when oil filling is needed, unscrew the packaging bolt 39, and fill oil into the oil storage bin through the oil filling screw hole; after the oil filling is completed, tighten the packaging bolt 39 again.

[0039] The sealing end 12 is fixed with two mutually engaged first opening covers 40 and second opening covers 41 on the outside of the sealing disk 15; the opening of the first opening cover 40 faces upward, and the opening of the second opening cover 41 faces downward; the first opening cover 40 is arranged on the inner side of the second opening cover 41; the first opening cover 40 is fixed with a scraper 42 at the end of the second opening cover 41, and the scraper 42 fits the outer edge of the sealing disk 15; the first opening cover 40 and the second opening cover 41 are engaged with each other and covered on the outside of the sealing disk 15, so that the sealing disk 15 and the end core shaft 14 can rotate freely. When soil is wrapped on the end core shaft 14, the scraper 42 can scrape off the soil on the outside of the end core shaft 14 to avoid it being brought into the inside of the sealing disk 15.

[0040] The above embodiments are only preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features and principles described in the scope of the present invention application are included in the scope of the present invention application.

Claims

1. A disc harrow shaft seat, characterized in that: include: A cast iron shaft seat, wherein the top of the cast iron shaft seat is integrally formed with a flange seat; both ends of the cast iron shaft seat are integrally formed with flange rings; a plurality of positioning blocks are integrally formed in the middle of the inner side of the cast iron shaft seat, and a plurality of limit blocks are integrally formed on both sides of the positioning block of the cast iron shaft seat; screw holes are provided at the ends of the positioning block and the limit block; A radial load guide unit, wherein the radial load guide unit is engaged and fixed at the positioning block; A composite load unit, the composite load unit is abutted between the positioning block and the limiting block; a reduced diameter opening is provided inside the composite load unit; a roller array is rotatably provided inside the reduced diameter opening; The limit platform comprises a flange seat fixed to the end of the limit block, one end of the flange seat is integrally formed with a top pressure ring seat, and the other end of the flange seat is integrally formed with a limit clamping seat, and the top pressure ring seat is clamped with the outer wall of the composite load unit; An end mandrel guide, the end mandrel guide comprises a sealing end fixed with a flange ring, a ball bearing is embedded inside the sealing end; the top pressure ring seat is in abutment with the outer sleeve of the ball bearing; the flange seat is in abutment with the sealing end; the end mandrel is movably embedded from the outside to the inside at the center of the sealing end, the outer part of the end mandrel is integrally formed with a sealing disk, and the inner side of the sealing disk is integrally formed with a plurality of pressure rings that roll with the outer part of the sealing end; a limiting guide ring is fixed to the outer part of the end mandrel by a countersunk bolt, and the limiting guide ring is in abutment with the rotating end of the ball bearing; The intermediate core shaft rolls against the radial load guide unit and the inner side of the roller array respectively; the intermediate core shaft and the end core shaft pass through the disc harrow shaft and are integrally fastened by limiting bolts.

2. The disc harrow shaft seat according to claim 1, characterized in that: The intermediate core shaft includes a first straight section that rolls with the radial load guide unit, and the two ends of the first straight section are integrally formed with reduced diameter sections that roll with the roller array; the end of the reduced diameter section is integrally formed with a second straight section; the second straight section and the end core shaft are close to each other at one end and are provided with mutually engaging grooves; the second straight section and the end core shaft are provided with a plurality of countersunk holes, the limit bolts are screwed into the countersunk holes, and the limit bolts are fixed to the keyways of the disc harrow shaft.

3. The disc harrow shaft seat according to claim 2, characterized in that: The second straight line segment and the outer portion of the end core shaft are sleeved with a collar at the slot.

4. The disc harrow shaft seat according to claim 1, characterized in that: The radial load unit includes a radial load bearing, an open groove is provided on the outside of the radial load bearing, the open groove is engaged with a positioning block, and ring plate seats are fixed to both ends of the positioning block by bolts, and the ring plate seat is abutted against the outer ring of the radial load bearing; a first sliding opening is provided on the ring plate seat that can movably pass through the limit block.

5. The disc harrow shaft seat according to claim 1, characterized in that: The composite load unit includes a pressure column, which is abutted between the positioning block and the limit block; a reduced diameter opening is provided on the inner side of the pressure column; a roller array arranged in a reduced diameter shape is provided on the inner side of the reduced diameter opening; a second sliding opening is provided on the outer side of the pressure column to be movable through the limit block; the second sliding opening first slides through the limit block, and then the second sliding opening and the limit block are rotated and misaligned, and finally the limit clamp is engaged with the second sliding opening.

6. The disc harrow shaft seat according to claim 1, characterized in that: The roller array comprises a cage, on which cylindrical rollers are rotatably arranged; the cylindrical rollers are respectively abutted between the middle core shaft and the reduced diameter opening.

7. The disc harrow shaft seat according to claim 6, characterized in that: The retaining frame includes a first ring seat and a second ring seat, and the first ring seat and the second ring seat are integrally formed with a plurality of positioning pins on one side close to each other. Guide holes are opened at the centers of both ends of the cylindrical roller, and the guide holes and the positioning pins are rollingly installed; a connecting column is fixed between the first ring seat and the second ring seat and the cylindrical roller.

8. The disc harrow shaft seat according to claim 1, characterized in that: The radial load bearing is a self-aligning bearing.

9. The disc harrow shaft seat according to claim 1, characterized in that: The top of the cast iron shaft seat is integrally formed with a plurality of support blocks, and the flange seat is integrally formed on the top of the support block; the cast iron shaft seat is provided with oil injection holes between the support blocks; a sealing plate is welded to the outside of the support block; an oil supply screw hole is provided on the sealing plate, and a sealing bolt is screwed onto the oil supply screw hole.

10. The disc harrow shaft seat according to claim 1, characterized in that: The sealing end is fixed with two mutually engaged first and second opening masks on the outside of the sealing plate; the opening of the first opening mask faces upward, and the opening of the second opening mask faces downward; the first opening mask is arranged on the inner side of the second opening mask; a scraper is fixed to the end of the first opening mask at the second opening mask, and the scraper is in contact with the outer edge of the sealing plate.

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