Large agricultural machinery gearbox steering shaft assembly

Abstract

The utility model discloses a large agricultural machinery gearbox steering shaft assembly, which belongs to the technical field of steering shafts, and comprises a first shaft barrel and a second shaft barrel, a plurality of groups of sliding strips are arranged on the inner wall of the first shaft barrel, a plurality of groups of sliding chutes are arranged on the second shaft barrel, the sliding strips are arranged in the sliding chutes in a sliding manner, and balls are arranged in the sliding chutes. A groove matched with the ball is formed in the sliding strip; the side face of the first shaft barrel is in threaded connection with a limiting ring, the limiting ring comprises a limiting table abutting against the side face of the first shaft barrel, multiple sets of limiting blocks are arranged on the inner wall of the limiting ring, the limiting blocks are movably arranged in the sliding grooves, and a baffle ring for limiting the limiting blocks is further arranged on the second shaft barrel. The second shaft barrel can be movably arranged in the first shaft barrel through cooperation of the sliding strips and the sliding grooves, and the stability during sliding can be further improved through the design of the balls and the grooves. And through the design of the first boss and the screw rod, the strength of the first shaft barrel and the second shaft barrel can be further improved, and damage to the assembly when the stress is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steering shafts, in particular to a steering shaft assembly for a large agricultural machinery gearbox. Background Art

[0002] Agricultural machinery refers to various machines used in the production process of crop planting and animal husbandry, as well as in the primary processing and treatment of agricultural and livestock products. Agricultural machinery includes agricultural power machinery, farmland construction machinery, soil tillage machinery, planting and fertilization machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery and agricultural transport machinery. With the continuous improvement of the degree of automation in agricultural production, more and more agricultural machinery is being put into today's agricultural production. Due to the special working environment, the gearbox is a very important component of agricultural machinery. The quality of the gearbox directly determines its service life. There is also a key steering mechanism in the gearbox. By controlling the left and right steering forks to adjust the left and right steering gears, the direction of the machine body can be changed.

[0003] Application number: CN202220726794.X; discloses a universal joint with a steering shaft anti-detachment structure, including two universal joint forks, the two universal joint forks are connected by a cross shaft, the universal joint fork is provided with an axis hole for connecting the steering shaft, the universal joint fork is provided with a guide groove, the guide groove is located on the radial outer side of the axis hole, a locking block is slidably connected in the guide groove, a fixing plate is provided in the guide groove, the fixing plate is located on the outer side of the locking block, an elastic member is provided between the locking block and the fixing plate, and a slot matching with the locking block is provided on the steering shaft; when the steering shaft is inserted into the axis hole, the locking block is inserted into the slot on the steering shaft to prevent the steering shaft from detaching from the axis hole. In the utility model, an anti-detachment structure for preventing the steering shaft from detaching from the axis hole is provided on the universal joint fork, and when the steering shaft is inserted into the axis hole connected to the steering shaft, the lock buckle is automatically inserted into the corresponding slot on the steering shaft under the action of the elastic member, thereby axially constraining the steering shaft to prevent the steering shaft from detaching from the universal joint fork.

[0004] The steering shafts in the above-mentioned comparative documents have low strength, and when the stress is too large, the components will be damaged, and they are not easy to disassemble and assemble. Therefore, a steering shaft assembly for a large agricultural machinery gearbox is designed here to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a steering shaft assembly for a large agricultural machinery gearbox in order to solve the problems that the traditional steering shaft has low strength, the components will be damaged when the stress is too large, and it is difficult to disassemble and assemble.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a steering shaft assembly of a large agricultural machinery gearbox, comprising a first shaft cylinder and a second shaft cylinder, the second shaft cylinder being movably arranged in the first shaft cylinder, a plurality of groups of slide bars are arranged on the inner wall of the first shaft cylinder, a plurality of groups of slide grooves are provided on the second shaft cylinder, the slide bars are slidably arranged in the slide grooves, a plurality of slots are provided in the slide grooves, a spring is provided in the slots, a ball is provided on the top of the spring, and a groove matching the ball is provided on the slide bar; the side surface of the first shaft cylinder is threadedly connected to a limit ring, the limit ring comprises a limit platform abutting the side surface of the first shaft cylinder, a plurality of groups of limit blocks are arranged on the inner wall of the limit ring, the limit blocks are movably arranged in the slide grooves, and a retaining ring for limiting the limit blocks is also provided on the second shaft cylinder.

[0007] As a further solution of the utility model: a plurality of locking holes are provided on the limiting ring, locking bolts are installed in the inner threads of the locking holes, and the locking bolts are in contact with the surface of the first shaft cylinder.

[0008] As a further solution of the utility model: a first boss is arranged on the surface of the first shaft cylinder, and a plurality of groups of screw rods are fixedly connected to the first boss; a second boss cooperating with the screw rods is arranged on the outer surface of the second shaft cylinder, and an adjusting nut is installed on the screw rod.

[0009] As a further solution of the utility model: the retaining ring divides the slide groove into two parts, and the limit block is slidably arranged on the outside of the slide groove.

[0010] As a further solution of the utility model: a through hole cooperating with the screw rod is provided on the second boss.

[0011] The utility model provides a large agricultural machinery gearbox steering shaft assembly through improvement, which has the following improvements and advantages compared with the prior art:

[0012] First, the utility model can make the second shaft cylinder movably arranged in the first shaft cylinder through the cooperation of the slide bar and the slide groove, wherein the stability during sliding can be further improved through the movably installed ball in the slide groove and the groove on the slide bar. And the strength of the first shaft cylinder and the second shaft cylinder can be further improved through the design of the first boss and the screw rod, avoiding damage to the components when the stress is too large, which can greatly improve the use effect and service life of the steering shaft assembly of the large agricultural machinery gearbox.

[0013] Secondly, the utility model can limit the activity area of ​​the first shaft cylinder through the limit ring and the limit block, and the first shaft cylinder can be slidably set on the outside of the slide groove through the cooperation of the retaining ring and the slide groove, which can further improve the practicality of the steering shaft assembly of the large agricultural machinery gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 It is an exploded matching diagram of the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the utility model.

[0018] Description of reference numerals:

[0019] 1. First shaft cylinder; 2. Second shaft cylinder; 3. Slide bar; 4. Slide groove; 5. First boss; 6. Screw rod; 7. Second boss; 8. Adjusting nut; 9. Slot; 10. Spring; 11. Ball; 12. Groove; 13. Limiting ring; 14. Limiting block; 15. Retaining ring; 16. Locking hole; 17. Locking bolt; 18. Limiting platform. DETAILED DESCRIPTION

[0020] The following will be combined with the attached Figures 1 to 3 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a large agricultural machinery gearbox steering shaft assembly through improvement, such as Figure 1-Figure 3 As shown, a steering shaft assembly of a large agricultural machinery gearbox includes a first shaft cylinder 1 and a second shaft cylinder 2, the second shaft cylinder 2 is movably arranged in the first shaft cylinder 1, a plurality of groups of slide bars 3 are arranged on the inner wall of the first shaft cylinder 1, a plurality of groups of slide grooves 4 are provided on the second shaft cylinder 2, the slide bars 3 are slidably arranged in the slide grooves 4, a plurality of slots 9 are provided in the slide grooves 4, a spring 10 is provided in the slot 9, a ball 11 is provided on the top of the spring 10, and a groove 12 cooperating with the ball 11 is provided on the slide bar 3; the side of the first shaft cylinder 1 is threadedly connected to a limit ring 13, the limit ring 13 includes a limit platform 18 abutting against the side of the first shaft cylinder 1, a plurality of groups of limit blocks 14 are arranged on the inner wall of the limit ring 13, the limit blocks 14 are movably arranged in the slide grooves 4, and a retaining ring 15 for limiting the limit blocks 14 is also provided on the second shaft cylinder 2.

[0022] The utility model can make the second shaft cylinder 2 movably arranged in the first shaft cylinder 1 through the cooperation of the slide bar 3 and the slide groove 4, wherein the stability during sliding can be further improved through the ball 11 movably installed in the slide groove 4 and the groove 12 on the slide bar 3. And the strength of the first shaft cylinder 1 and the second shaft cylinder 2 can be further improved through the design of the first boss 5 and the screw 6, avoiding damage to the components when the stress is too large, which can greatly improve the use effect and service life of the steering shaft assembly of the large agricultural machinery gearbox. The utility model can limit the movable area of ​​the first shaft cylinder 1 through the limit ring 13 and the limit block 14, and the first shaft cylinder 1 can be slidably arranged on the outside of the slide groove 4 through the cooperation of the retaining ring 15 and the slide groove 4, which can further improve the practicality of the steering shaft assembly of the large agricultural machinery gearbox.

[0023] See attached Figure 2 -Attached Figure 2 A plurality of locking holes 16 are formed on the limiting ring 13 , and locking bolts 17 are installed in the inner threads of the locking holes 16 , and the locking bolts 17 abut against the surface of the first shaft cylinder 1 .

[0024] In this embodiment: in order to further improve the stability of the limit ring 13 installed on the first shaft cylinder 1, the locking bolt 17 is made to abut against the surface of the first shaft cylinder 1, and the double locking of the threaded connection and the locking bolt 17 can greatly improve the stability during operation.

[0025] See attached Figure 1 -Attached Figure 2 A first boss 5 is arranged on the surface of the first shaft cylinder 1, and a plurality of sets of screw rods 6 are fixedly connected to the first boss 5. A second boss 7 cooperating with the screw rods 6 is arranged on the outer surface of the second shaft cylinder 2, and an adjusting nut 8 is installed on the screw rod 6.

[0026] In this embodiment, in order to further improve the strength of the first shaft cylinder 1 and the second shaft cylinder 2 , a second boss 7 cooperating with the screw 6 is provided on the outer surface of the second shaft cylinder 2 .

[0027] See attached Figure 2 -Attached Figure 3 The retaining ring 15 divides the slide groove 4 into two parts, and the limit block 14 is slidably arranged on the outside of the slide groove 4.

[0028] In this embodiment, in order to limit the range of motion of the first shaft cylinder 1 , the slide groove 4 is divided into two parts by a retaining ring 15 .

[0029] See attached Figure 2 -Attached Figure 3 The second boss 7 is provided with a through hole that cooperates with the screw rod 6 .

[0030] In this embodiment, in order to further improve the strength of the first shaft cylinder 1 and the second shaft cylinder 2 , the screw rod 6 acts as a reinforcing rib, so a through hole cooperating with the screw rod 6 is opened on the second boss 7 .

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steering shaft assembly for a large agricultural machinery gearbox, characterized in that: The invention comprises a first shaft cylinder (1) and a second shaft cylinder (2), wherein the second shaft cylinder (2) is movably arranged in the first shaft cylinder (1), a plurality of slide bars (3) are arranged on the inner wall of the first shaft cylinder (1), a plurality of slide grooves (4) are provided on the second shaft cylinder (2), the slide bars (3) are slidably arranged in the slide grooves (4), a plurality of slots (9) are provided in the slide grooves (4), a spring (10) is arranged in the slots (9), a ball (11) is arranged on the top of the spring (10), and the slide bars (3) are slidably arranged in the slide grooves (4), a plurality of slots (9) are provided in the slide grooves (9), a spring (10) is arranged in the slots (9), a ball (11) is arranged on the top of the spring (10), and the slide bars (3) are slidably arranged in the slide grooves (4). (3) is provided with a groove (12) cooperating with the ball (11); the side of the first shaft cylinder (1) is threadedly connected to a limit ring (13), the limit ring (13) includes a limit platform (18) abutting against the side of the first shaft cylinder (1), a plurality of groups of limit blocks (14) are arranged on the inner wall of the limit ring (13), the limit blocks (14) are movably arranged in the slide groove (4), and the second shaft cylinder (2) is also provided with a retaining ring (15) for limiting the limit block (14).

2. A large agricultural machinery gearbox steering shaft assembly according to claim 1, characterized in that: The limiting ring (13) is provided with a plurality of locking holes (16), the locking holes (16) are internally threadedly provided with locking bolts (17), and the locking bolts (17) abut against the surface of the first shaft cylinder (1).

3. A large agricultural machinery gearbox steering shaft assembly according to claim 1, characterized in that: A first boss (5) is arranged on the surface of the first shaft cylinder (1), and a plurality of sets of screw rods (6) are fixedly connected to the first boss (5); a second boss (7) cooperating with the screw rods (6) is arranged on the outer surface of the second shaft cylinder (2), and an adjusting nut (8) is installed on the screw rods (6).

4. A large agricultural machinery gearbox steering shaft assembly according to claim 1, characterized in that: The retaining ring (15) divides the slide groove (4) into two parts, and the limiting block (14) is slidably arranged on the outside of the slide groove (4).

5. A large agricultural machinery gearbox steering shaft assembly according to claim 3, characterized in that: The second boss (7) is provided with a through hole which cooperates with the screw rod (6).

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