Variable speed control mechanism

Abstract

The utility model discloses a variable-speed control mechanism, which belongs to the technical field of agricultural machinery and solves the problems of large control stroke, interference between a main variable-speed gear lever and an auxiliary variable-speed gear lever and occupation of leg space of a driver in a gear engaging process in the prior art. The variable-speed control device mainly comprises a main variable-speed control assembly and an auxiliary variable-speed control assembly, the main variable-speed control assembly and the auxiliary variable-speed control assembly comprise a control support, a rotating transmission plate is arranged on the control support, a main selection upper gear lever and a main selection lower gear lever are connected to the rotating transmission plate I, and a main variable-speed control lever is hinged to the main selection upper gear lever; and the main selection lower gear lever is connected with a gearbox. The length of the operating lever is reduced by rotating the transmission plate I, so that the gear selecting stroke is clearer, gear engaging feedback is clear, and gear operation is light, handy and flexible.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically, to a speed control mechanism. Background Technology

[0002] The prior art, application CN103291901A, discloses a tractor sleeve-type compact gear shifting control mechanism. In this mechanism, the main and auxiliary gear shifting control levers are directly inserted into the gearbox for gear selection and shifting operations. However, this type of gear shifting lever is long, resulting in a large travel distance during gear selection and shifting. In certain gear positions, interference between the main and auxiliary gear shifting levers can occur, and the gear selection travel is not clear enough. Currently, there is a lack of a gear shifting control mechanism that offers more convenient and clear gear operation. Utility Model Content

[0003] The purpose of this utility model is to provide a gear shifting mechanism to solve the problems of large operating travel, interference between the main and auxiliary gear shift levers, and encroachment on the driver's leg space during gear shifting in the existing technology.

[0004] This utility model is achieved through the following technical solution:

[0005] A transmission control mechanism includes a main transmission control assembly and a secondary transmission control assembly. The main transmission control assembly includes a control bracket, on which a rotary transmission plate I is mounted. A main selector upper lever and a main selector lower lever are connected to the rotary transmission plate I. The main selector upper lever is hinged to a main transmission control lever. The main selector lower lever is connected to a gearbox. The travel of the main transmission control lever is reduced by rotating the transmission plate.

[0006] Furthermore, the auxiliary transmission control assembly includes an auxiliary transmission control lever and a pull rod, the auxiliary transmission control lever and the pull rod being hinged together, and the pull rod being connected to the gearbox.

[0007] Furthermore, a rotary transmission plate II is provided between the main selector shift lever and the gearbox. One end of the rotary transmission plate II is connected to the main selector shift lever, and the other end is connected to an adjusting rod. By connecting the main selector shift lever and the adjusting rod through the rotary transmission plate II, the force transmission path can be optimized, ensuring effective force transmission and reducing force loss.

[0008] Furthermore, the control bracket is equipped with a mounting base, on which a main gear shift lever is mounted. One end of the main gear shift lever is connected to a secondary gear selector lever via a connecting block, and the other end of the secondary gear selector lever is connected to the rotary transmission plate I. The connection between the main gear shift lever and the secondary gear selector lever enhances their coordinated operation, resulting in a more fluid and harmonious gear shifting action.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention reduces the length of the control lever by rotating the transmission plate I, making the gear selection stroke clearer, the gear shift feedback more obvious, and the gear operation lighter and more convenient; it effectively reduces the stroke of the main and auxiliary gear shift levers, avoiding interference between certain gears in the main and auxiliary gear shifts; it enhances the interior trim level, making the interior more upscale; and it allows for a more rational layout of the cab space, increasing the driver's legroom. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1. Control bracket; 2. Main gear shift lever; 3. Secondary gear shift lever; 4. Rotary shaft; 5. Rotating plate; 6. Pull rod; 7. Main selector upper gear lever; 8. Secondary selector gear lever; 9. Main selector lower gear lever; 10. Adjusting lever; 11. Gearbox; 12. Mounting base. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the creation of this utility model.

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Example 1: A speed control mechanism, such as Figure 1 As shown, the system includes a main transmission control assembly and a secondary transmission control assembly. The main transmission control assembly includes a control bracket 1, on which a rotary transmission plate 1 is mounted. A main selector lever 7 and a main selector lever 9 are connected to the rotary transmission plate 1. The main selector lever 7 is hinged to a main transmission control lever 2. The main selector lever 9 is connected to a gearbox 11. The rotary transmission plate reduces the travel of the main transmission control lever 2.

[0016] Example 2: A transmission control mechanism, the auxiliary transmission control assembly includes an auxiliary transmission control lever 3 and a pull rod 6, the auxiliary transmission control lever 3 and the pull rod 6 are hinged, and the pull rod 6 is connected to the gearbox 11. A rotary transmission plate II is provided between the main gear selector lever 9 and the gearbox 11, one end of the rotary transmission plate II is connected to the main gear selector lever 9, and the other end is connected to an adjusting rod 10. Connecting the main gear selector lever 9 and the adjusting rod 10 through the rotary transmission plate II can optimize the force transmission path, ensure effective force transmission, and reduce force loss. The control bracket 1 is provided with a mounting base 12, and the main transmission control lever 2 is mounted on the mounting base 12. One end of the main transmission control lever 2 is connected to the auxiliary gear selector lever 8 through a connecting block, and the other end of the auxiliary gear selector lever 8 is connected to the rotary transmission plate I. The connection between the main transmission control lever 2 and the auxiliary gear selector lever 8 enhances the coordinated work between the two, making the shifting action more smooth and harmonious. Both the rotary transmission plate I and the rotary transmission plate II include a transition shaft bracket, on which a rotating shaft 4 is mounted, and on the rotating shaft 4 a rotating plate 5 is mounted. Everything else is the same as in Embodiment 1.

[0017] When the mechanism performs the main transmission gear selection operation, the main transmission control lever 2 rotates to the left, causing the main gear selection lever to move upward. The rotating transmission plate I on the rotating bracket causes the main gear selection lower lever 9 to rise. The rotating plate II drives the internal rotating shaft of the gearbox 11 to move, thereby realizing the gear selection action of the gearbox 11.

[0018] When the mechanism performs the auxiliary gear selection operation, the main gear control lever 2 rotates to the left, causing the pull rod 6 to move upward. The pull rod 6 causes the rotating rocker arm inside the gearbox 11 to move upward, thereby realizing the auxiliary gear selection action of the gearbox 11.

[0019] All moving parts of the mechanism are connected using rigid rods, which makes the control mechanism more tactile and offers advantages in durability and reliability. The gear shift control mechanism is designed to be positioned primarily on the right, covered by the right-side interior trim in the cab, balancing driver legroom with the clean aesthetics of the cab interior.

[0020] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A transmission control mechanism, comprising a main transmission control component and a secondary transmission control component, characterized in that: The main transmission control assembly includes a control bracket (1), on which a rotary transmission plate I is provided. A main selector lever (7) and a main selector lever (9) are connected to the rotary transmission plate I. The main selector lever (7) is hinged to the main transmission control lever (2). The main selector lever (9) is connected to the gearbox (11). The auxiliary transmission control assembly includes an auxiliary transmission control lever (3) and a pull rod (6). The auxiliary transmission control lever (3) is hinged to the pull rod (6), and the pull rod (6) is connected to the gearbox (11). A rotary transmission plate II is provided between the main selector lever (9) and the gearbox (11). One end of the rotary transmission plate II is connected to the main selector lever (9), and the other end is connected to an adjusting rod (10). The control bracket (1) is provided with a mounting base. The mounting base is provided with the main transmission control lever (2). The main transmission control lever (2) is connected to one end of the auxiliary selector lever (8) through a connecting block. The other end of the auxiliary selector lever (8) is connected to the rotary transmission plate I.

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