Gearbox linkage steering mechanism

Abstract

The utility model relates to tractor gearbox operating rod technical field, concretely relates to a gearbox connecting rod operating mechanism, including the box, the fixed third limit seat in the middle portion of box sliding installation mutually parallel first rotation axis and second rotation axis, the first end of box is equipped with first ball shaft, second ball shaft, is through second rod, first connecting rod and first rotation axis, second rotation axis respectively detachable connection, the other end of two rotation axes installs second shift lever, first shift lever respectively, the second spring is set up on the second rotation axis between the third limit seat and first shift lever, the first limit seat that cooperates with first rotation axis is established to the box, first rotation axis is equipped with first limit ring and the first spring of setting, and the first spring is located between the limit ring and first limit seat. This mechanism is accurate, stable, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of tractor gearbox control lever technology, specifically to a gearbox linkage control mechanism. Background Technology

[0002] The gearbox linkage control mechanism is a core component in the field of tractor gearbox control lever technology. Its main function is to transmit the operator's operating force through components such as linkages and shafts, and drive the shift fork to achieve gearbox gear switching. Its performance is directly related to the tractor's operating efficiency and operational stability.

[0003] Currently, although existing gearbox linkage control mechanisms generally possess basic structures such as a housing, shaft, linkage, and control lever, they still have many shortcomings in practical applications: the reset mechanism of existing mechanisms has defects, some mechanisms do not have effective elastic reset components, the shaft cannot automatically reset to the initial position after operation, causing inconvenience to subsequent gear shifting operations, requiring manual retraction, resulting in frequent rigid collisions between the shaft and the limit components, aggravating component wear, reducing operational flexibility, and further shortening the overall service life of the mechanism. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gearbox linkage operating mechanism, specifically implemented through the following technical solution: A gearbox linkage control mechanism includes a housing. A third limiting seat is fixedly installed in the middle of the housing. A first rotating shaft and a second rotating shaft, parallel to each other, are slidably installed on the third limiting seat. A first ball bearing and a second ball bearing are installed at the first end of the housing. The bottom of the first ball bearing is engaged with the first end of a second connecting rod. The second end of the second connecting rod is detachably connected to the first end of the first rotating shaft. A second lever is detachably installed at the second end of the first rotating shaft. The bottom of the second ball bearing is engaged with the first end of the first connecting rod. The second end of the first connecting rod is detachably connected to the first end of the second rotating shaft. A first lever is detachably installed at the second end of the second rotating shaft. A second spring is sleeved on the second rotating shaft between the third limiting seat and the first lever. The housing also has a first limiting seat that slides with the first rotating shaft. A first limiting ring is bolted to the first rotating shaft between the first limiting seat and the second rotating shaft. A first spring is sleeved on the first rotating shaft between the first limiting ring and the first limiting seat.

[0005] The first limiting seat is located on the side of the third limiting seat near the first end of the housing.

[0006] A second limiting seat that slides with the second rotating shaft is also fixedly installed on the top wall of the box. The second limiting seat is located on the side of the third limiting seat near the first end of the box.

[0007] The first ball shaft and the second ball shaft are respectively mounted on the first end of the housing via the first joystick base and the second joystick base.

[0008] A first protective sleeve is installed between the first ball joint and the first joystick base, and a second protective sleeve is installed between the second ball joint and the second joystick base.

[0009] Both the first link and the second link include a connecting sleeve fixedly installed at the second end of the connecting part, and a locking block fixedly installed at the first end of the connecting part.

[0010] The ball heads at the bottom of the first and second ball shafts are respectively engaged with the locking blocks of the second and first connecting rods.

[0011] The technical solution of this utility model has the following advantages: The gearbox linkage control mechanism provided by this utility model, through the scientific layout of the rotating shaft, connecting rod, control lever and matching limit, reset and protection components inside the gearbox, achieves the precision, stability and ease of operation of the tractor gearbox. It effectively solves the problems that may exist in the prior art, such as shifting jamming, poor reset, easy wear of parts or inconvenient maintenance, improves the reliability and service life of the mechanism, and meets the stringent requirements of the gearbox control mechanism during tractor operation.

[0012] The first and second rotating shafts are not only parallel to each other and located in the same plane, but also pass through the third limiting seat fixed in the middle of the housing and form a sliding fit. This design can strictly limit the movement trajectory of the two rotating shafts, prevent them from deviating during reciprocating motion, and ensure that the first and second levers at the ends of the rotating shafts can be accurately aligned and stably shift the shift fork, fundamentally reducing shifting errors or component interference caused by rotating shaft deviation. At the same time, the first, second, and third limiting seats set on the top of the housing form multiple positioning constraints, further limiting the movement range of the rotating shafts, preventing excessive movement of the rotating shafts from damaging related components, and ensuring the stability of the transmission process.

[0013] The first and second joystick bases are respectively adapted to the first and second ball joints. The first and second protective sleeves installed between the ball joints and the bases effectively prevent external dust, oil, and impurities from entering the mating gap between the ball joints and the bases, avoiding reduced rotational flexibility of the ball joint due to wear caused by impurities and extending the service life of the ball joint assembly. The spherical mating structure of the ball joint itself also makes the joystick rotation smoother, reducing the operator's operating force and improving operating comfort. The top of the ball joint is connected to the handle through a reinforcing sleeve, which greatly enhances the structural strength of the connection between the handle and the ball joint, preventing the handle from breaking under long-term force operation. The grip connected to the top of the handle by threads can be flexibly replaced according to the operator's usage habits or the wear of the grip, further improving the adaptability of the mechanism.

[0014] Both the first and second connecting rods adopt an integrated structure of connecting sleeve and locking block. The connecting sleeve is fixed to the first and second rotating shafts respectively by bolts, and the locking block is engaged with the ball head at the bottom of the ball shaft. This connection method not only ensures the stability of power transmission between the connecting rod and the rotating shaft / ball shaft, avoiding operational failure due to loose connection, but also makes it easier to disassemble and replace the connecting rod or rotating shaft during later maintenance due to the detachability of the bolt connection, reducing maintenance difficulty and cost. At the same time, the first spring sleeved on the first rotating shaft and the second spring sleeved on the second rotating shaft, with the elastic return characteristics of the springs, can automatically drive the rotating shaft to return to the initial position after the control lever operation is completed, avoiding subsequent gear shifting difficulties caused by the mechanism's inability to return to the original position. In addition, the springs can buffer the impact force during the movement of the rotating shaft, reduce the rigid collision between the rotating shaft and the limit seat, reduce component wear, and extend the overall service life of the mechanism.

[0015] In addition, the housing adopts a split design of upper and lower covers. The lower cover is connected to the upper cover, the third limit seat and the gearbox housing by bolts. This structure not only facilitates the assembly of internal components such as the first shaft and the second shaft, but also facilitates the inspection and maintenance of internal components in the later stage. At the same time, the bolt connection ensures the firmness of the connection between the housing and the gearbox housing, ensuring that the mechanism can still work stably in the vibration environment of tractor operation, avoiding the impact of loose connection on the operation performance, and further improving the overall reliability and practicality of the mechanism. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the structure of AA; Figure 3 for Figure 1 Schematic diagram of the structure of BB; Figure 4 This is a schematic diagram of the first link.

[0018] In the diagram, 1-box body, 2-first connecting rod, 3-second connecting rod, 4-first ball shaft, 5-first control lever base, 6-first protective sleeve, 7-first reinforcing sleeve, 8-first handle, 9-first grip, 10-second grip, 11-second handle, 12-second reinforcing sleeve, 13-second protective sleeve, 14-first rotating shaft, 15-first limiting seat, 16-first spring, 17-second limiting seat, 18-first limiting ring, 19-second spring, 20-first lever, 21-second lever, 22-third limiting seat, 23-second rotating shaft, 24-slide groove, 25-connecting sleeve, 26-connecting part, 27-block. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As attached Figure 1 To be continued Figure 4 As shown, this utility model provides a gearbox linkage control mechanism, including a housing 1, inside which a first rotating shaft 14 and a second rotating shaft 23 are installed parallel to each other.

[0024] As attached Figure 2 As shown, the first rotating shaft 14 and the second rotating shaft 23 are parallel to each other and there is a gap between them.

[0025] The axis of the first rotating shaft 14 and the axis of the second rotating shaft 23 are parallel to each other and lie in the same plane.

[0026] As attached Figure 2 As shown, a third limiting seat 22 is fixedly installed in the middle of the housing 1, and the first rotating shaft 14 and the second rotating shaft 23 pass through the third limiting seat 22 and slide in cooperation with the third limiting seat 22.

[0027] The top of the first end of the housing 1 is equipped with a first joystick base 5 and a second joystick base that are respectively matched with the first rotating shaft 14 and the second rotating shaft 23. The first joystick base 5 is equipped with a first ball shaft 4, and the second joystick base is equipped with a second ball shaft.

[0028] The top of the first ball bearing 4 is fitted with a first handle 8 via a first reinforcing sleeve 7, and the top of the first handle 8 is fitted with a first grip 9 via a thread.

[0029] A first protective sleeve 6 is installed between the first ball joint 4 and the first control lever base 5.

[0030] The top of the second ball shaft is fitted with a second handle 11 via a second reinforcing sleeve 12, and the top of the second handle 11 is fitted with a second grip 10 via a thread.

[0031] A second protective sleeve 13 is installed between the second ball joint and the base of the second joystick.

[0032] The ball head at the bottom of the first ball shaft 4 is engaged with the first end of the second link 3. The second end of the second link 3 is bolted to the first end of the first rotating shaft 14. The second end of the first rotating shaft 14 is bolted to a second lever 21, which is used to move the shift fork.

[0033] A first limiting seat 15 that slides with the first rotating shaft 14 is also fixedly installed on the top wall of the housing 1. The first limiting seat 15 is located on the side of the third limiting seat 22 near the first end of the housing 1.

[0034] A first limiting ring 18 is bolted onto the first rotating shaft 14 located between the first limiting seat 15 and the second rotating shaft 23.

[0035] A first spring 16 is sleeved on a first rotating shaft 14 located between a first limiting ring 18 and a first limiting seat 15. The first end of the first spring 16 abuts against the first limiting seat 15, and the second end abuts against the first limiting ring 18.

[0036] The ball head at the bottom of the second ball shaft is engaged with the first end of the first link 2. The second end of the first link 2 is bolted to the first end of the second rotating shaft 23. The second end of the second rotating shaft 23 is bolted to the first lever 20, which is used to move the shift fork.

[0037] A second limiting seat 17 that slides with the second rotating shaft 23 is also fixedly installed on the top wall of the housing 1. The second limiting seat 17 is located on the side of the third limiting seat 22 near the first end of the housing 1.

[0038] A second spring 19 is sleeved on the second rotating shaft 23 located between the third limiting seat 22 and the first lever 20. The first end of the second spring 19 abuts against the third limiting seat 22, and the second end abuts against the first lever 20.

[0039] In this embodiment, the first lever 20 and the second lever 21 have the same structure, both including a lever body and a sleeve fixed to one end of the lever body. The sleeve of the first lever 20 is sleeved on the second end of the second rotating shaft 23 and fixed with bolts, and the sleeve of the second lever 21 is sleeved on the second end of the first rotating shaft 14 and fixed with bolts.

[0040] The first link 2 and the second link 3 have the same structure, as shown in the attached figure. Figure 4 As shown, it includes a connecting sleeve 25 fixedly installed at the second end of the connecting part 26, and a locking block 27 fixedly installed at the first end of the connecting part 26.

[0041] The connecting sleeve 25 of the first connecting rod 2 is fitted onto the first end of the second rotating shaft 23 and fixed with bolts.

[0042] The connecting sleeve 25 of the second connecting rod 3 is fitted onto the first end of the first rotating shaft 14 and fixed with bolts.

[0043] The locking block 27 of the first link 2 engages with the ball head of the second ball axle, and the locking block 27 of the second link 3 engages with the ball head of the first ball axle 4.

[0044] After the first link 2 and the second link 3 are installed, their connecting sleeves 25 are both located above the locking block 27.

[0045] The first link 2 and the second link 3 are both located on the side of the third limiting seat 22 near the first end of the housing 1.

[0046] As attached Figure 1 As shown, the housing includes an upper cover and a lower cover, and the first control lever base 5 and the second control lever base are both installed on the top of the upper cover.

[0047] The first end of the lower cover is connected to the first end of the upper cover by bolts, the second end of the lower cover is connected to the third limiting seat 22 by bolts, and the third limiting seat 22 and the second end of the upper cover are connected to the gearbox housing by bolts.

[0048] The first rotating shaft 14 and the second rotating shaft 23 are provided with a sliding groove 24 that matches the third limiting seat 22, in order to prevent the first rotating shaft 14 and the second rotating shaft 23 from rotating unnecessarily.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A gearbox linkage operating mechanism, characterized in that, Includes a housing (1), a third limiting seat (22) is fixedly installed in the middle of the housing (1), a first rotating shaft (14) and a second rotating shaft (23) are slidably installed on the third limiting seat (22), the first end of the housing (1) is equipped with a first ball shaft (4) and a second ball shaft, the bottom of the first ball shaft (4) is snapped into the first end of the second connecting rod (3), the second end of the second connecting rod (3) is detachably connected to the first end of the first rotating shaft (14), the second end of the first rotating shaft (14) is detachably equipped with a second lever (21); the bottom of the second ball shaft is snapped into the first end of the first connecting rod (2), the first end of the first connecting rod (2) is detachably connected to the first end of the first rotating shaft (14), the second end of the first rotating shaft (14) is detachably equipped with a second lever (21); the bottom of the second ball shaft is snapped into the first end of the first connecting rod (2), the first end of the first connecting rod (2) is detachably connected to the first end of the first connecting rod (2), the second ... The two ends are detachably connected to the first end of the second rotating shaft (23), and the second end of the second rotating shaft (23) is detachably equipped with a first lever (20); a second spring (19) is sleeved on the second rotating shaft (23) between the third limiting seat (22) and the first lever (20); the housing (1) is also fixedly equipped with a first limiting seat (15) that slides with the first rotating shaft (14); a first limiting ring (18) is installed on the first rotating shaft (14) between the first limiting seat (15) and the second rotating shaft (23) by bolts; a first spring (16) is sleeved on the first rotating shaft (14) between the first limiting ring (18) and the first limiting seat (15).

2. The gearbox linkage operating mechanism according to claim 1, characterized in that, The first limiting seat (15) is located on the side of the third limiting seat (22) near the first end of the housing (1).

3. The gearbox linkage operating mechanism according to claim 1, characterized in that, The top wall of the housing (1) is also fixedly installed with a second limiting seat (17) that slides with the second rotating shaft (23). The second limiting seat (17) is located on the side of the third limiting seat (22) near the first end of the housing (1).

4. The gearbox linkage operating mechanism according to claim 1, characterized in that, The first ball shaft (4) and the second ball shaft are respectively mounted on the first end of the housing (1) via the first joystick base (5) and the second joystick base.

5. The gearbox linkage operating mechanism according to claim 1, characterized in that, A first protective sleeve (6) is installed between the first ball shaft (4) and the first joystick base (5), and a second protective sleeve (13) is installed between the second ball shaft and the second joystick base.

6. The gearbox linkage operating mechanism according to claim 1, characterized in that, The first link (2) and the second link (3) both include a connecting sleeve (25) fixedly installed at the second end of the connecting part (26) and a locking block (27) fixedly installed at the first end of the connecting part (26).

7. The gearbox linkage operating mechanism according to claim 1, characterized in that, The ball heads at the bottom of the first ball shaft (4) and the second ball shaft are respectively engaged with the locking blocks (27) of the second connecting rod (3) and the first connecting rod (2).

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