Protective device for gear lever of multi-gear gearbox

Abstract

The protection device comprises a protection box and the gear lever, an opening is formed in the middle of the upper side of the protection box, the gear lever is located in the opening in the side face of the protection box, a flexible baffle is arranged at the top of an inner cavity of the protection box in a sliding mode, and the flexible baffle is used for sealing the opening. The blocking rod is in movable contact with the flexible baffle, and the connecting position of the flexible baffle and the blocking rod is arranged in a sealed mode. The protective device for the gear lever of the multi-gear gearbox can protect the gear shifting position, reduce dust, chippings and other foreign matter entering the gearbox from a gear shifting gap and prolong the service life of the gearbox, meanwhile, the protective device can improve the resistance during gear shifting, reduce gear jumping caused by too fast gear shifting, facilitate gear shifting adjustment of the gearbox and improve the gear shifting efficiency. And the resistance in the gear shifting process is adjustable, so that the gear shifting device is suitable for driving habits of different persons and is convenient for the persons to operate and use.

Description

Technical Field

[0001] The utility model relates to the technical field of protective devices, in particular to a protective device for a gear lever of a multi-speed gearbox. Background Art

[0002] Tractors are usually equipped with multiple gears to meet different operating requirements or adapt to various road conditions. To facilitate the adjustment of gears, tractors are usually equipped with gear levers, but the gear lever is usually installed next to the driver's seat. Some tractors do not have a protective cab, which causes foreign objects such as dust and debris to easily enter the gearbox through the gear lever during use. The long-term accumulation of foreign objects will cause serious damage to the use of the gearbox and cannot guarantee the service life of the gearbox. In addition, when shifting gears through the gear lever, the gear switching has a poor sense of frustration and is prone to skipping. In addition, the gear lever switching too quickly can easily damage the shift fork or break the shift shaft travel limit plate, resulting in a chaotic gear phenomenon, resulting in certain deficiencies in the gear switching process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a protective device for the gear lever of a multi-speed gearbox, which can protect the gear shifting point, reduce dust, debris and other foreign matter entering the gearbox during the gear shifting gap, and increase the service life of the gearbox. At the same time, the protective device can increase the resistance encountered during gear switching, reduce gear jumping or damage to the shift shaft travel limit plate due to too fast gear shifting, facilitate the switching and adjustment of the gear position of the gearbox, and the resistance encountered during the gear shifting process can be adjusted, which is suitable for the driving habits of different people and is convenient for people to operate and use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a gear lever of a multi-speed gearbox, comprising a protective box and a gear lever, an opening being provided in the middle of the upper side of the protective box, the gear lever being located in the opening on the side of the protective box, a flexible baffle being slidingly provided on the top of the inner cavity of the protective box, the flexible baffle being used for sealing the opening, the gear lever being in movable contact with the flexible baffle, and the connection between the flexible baffle and the gear lever being sealed, and a positioning member for positioning the flexible baffle being provided in the protective box.

[0005] As a preferred technical solution of the utility model, several protruding plates are fixed on the side of the flexible baffle, and the positioning piece includes a positioning card plate, which is clamped between two adjacent protruding plates, and the ends of the protruding plate and the positioning card plate are both arc-shaped. A fixing plate is fixed in the protective box, and an elastic support component for positioning the positioning card plate is arranged on the side of the fixing plate.

[0006] As a preferred technical solution of the utility model, the elastic support assembly includes a positioning rod fixed on the side of the fixed plate, a positioning spring is sleeved on the outer side of the positioning rod, the positioning spring is located between the positioning clamping plate and the fixed plate, a guide rod is fixed on the side of the fixed plate, and the guide rod and the positioning clamping plate are slidably connected.

[0007] As a preferred technical solution of the utility model, the bottom of the side of the positioning rod is provided with a thread, and the side of the positioning rod is threadedly connected with a positioning nut, and the positioning spring is located between the positioning nut and the positioning clamping plate.

[0008] As a preferred technical solution of the utility model, a positioning plate is fixed on the inner side of the protection box, a slideway is reserved between the positioning plate and the protection box, and the flexible baffle is slidably arranged in the slideway.

[0009] As a preferred technical solution of the present utility model, the gear lever includes a positioning cylinder and an adjusting rod, the positioning cylinder is sealingly connected to the flexible baffle, the adjusting rod is slidably arranged in the positioning cylinder, the side of the positioning cylinder is evenly provided with positioning holes from top to bottom, the side of the adjusting rod is installed with a mounting groove, a fixing rod is slidably arranged in the mounting groove, and the fixing rod is snap-fitted with the positioning hole, a limit spring for positioning the fixing rod is arranged in the mounting groove, a positioning groove connected to the mounting groove is opened on the side of the adjusting rod, and a limit plate slidably arranged in the positioning groove is fixed on the side of the fixing rod.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The protective device of the gear lever of the multi-speed gearbox of the utility model example, when the gear lever is operated to shift the gears of the tractor gearbox, the flexible baffle plate arranged in the protective box blocks foreign matter such as external dust and debris, and prevents foreign matter from entering the gearbox during the gear shifting gap and affecting the use of the gearbox. During the gear adjustment process, the positioning plate positions the position of the flexible baffle plate, so that the flexible baffle plate slides stably in the slideway, ensuring that the flexible baffle plate plays an effective protective role.

[0012] 2. The protective device for the gear lever of the multi-speed transmission in the example of the utility model increases the resistance encountered by the gear lever during the shifting process by means of a positioning card plate, thereby increasing the sense of frustration during gear switching and preventing gear jumping during gear switching. At the same time, it prevents the gear lever from switching too quickly to damage the shift fork or break the shift shaft travel limit plate, resulting in gear disorder.

[0013] 3. The protective device for the gear lever of a multi-speed transmission in the example of the utility model can adjust the elastic sensitivity of the positioning spring by adjusting the position of the positioning nut on the positioning rod, thereby adjusting the size of the resistance experienced by the gear lever during the gear shifting process. It is suitable for the driving habits of different people and facilitates the use of the protective device.

[0014] 4. The protective device for the gear lever of a multi-speed transmission in the example of the utility model can push the fixed rod into the installation groove by pressing the fixed rod to squeeze the limit spring, so that the adjusting rod loses the limit of the fixed rod. Then, the length of the adjusting rod outside the positioning tube can be adjusted, thereby realizing the adjustment of the gear lever length. After the adjustment is completed, the limit spring pushes the fixed rod out of the installation groove and is stuck in the positioning hole corresponding to the installation groove, which is convenient for the use of the gear lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the protective box in the utility model;

[0019] Figure 5 It is a structural schematic diagram of another perspective of the utility model;

[0020] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point C in the middle.

[0021] In the figure: 1 protective box, 2 flexible baffle, 3 positioning plate, 4 convex plate, 5 gear lever, 51 positioning cylinder, 52 adjusting rod, 53 fixing rod, 54 limiting plate, 55 limiting spring, 6 positioning card plate, 7 fixing plate, 8 positioning rod, 9 positioning spring, 10 positioning nut, 11 guide rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-6The utility model provides a technical solution: a protective device for a gear lever of a multi-speed gearbox, comprising a protective box 1 and a gear lever 5, the gear lever 5 being connected to the gearbox on the tractor and used for switching the gearbox state to adjust the tractor gear. An opening is provided in the middle of the upper side of the protective box 1, the gear lever 5 is located in the opening on the side of the protective box 1, a flexible baffle 2 is slidably provided on the top of the inner cavity of the protective box 1, the flexible baffle 2 is used for sealing the opening, the gear lever 5 is in active contact with the flexible baffle 2, and the connection between the flexible baffle 2 and the gear lever 5 is a sealing setting. When the gear lever 5 is operated to shift the gear of the tractor gearbox, the flexible baffle 2 arranged in the protective box 1 blocks foreign matter such as external dust and debris, so as to prevent foreign matter from entering the gearbox during the gear shifting gap and affecting the use of the gearbox.

[0024] The protective box 1 is provided with a positioning piece for positioning the flexible baffle 2, and a plurality of convex plates 4 are fixed on the side of the flexible baffle 2. The positioning piece includes a positioning card plate 6, which is clamped between two adjacent convex plates 4. The ends of the convex plate 4 and the ends of the positioning card plate 6 are both arc-shaped, so that the positioning card plate 6 can be moved out from between the two adjacent convex plates 4 after being subjected to force. A fixing plate 7 is fixed in the protective box 1, and an elastic supporting component for positioning the positioning card plate 6 is provided on the side of the fixing plate 7. During the movement of the flexible baffle 2, the positioning card plate 6 is squeezed by the force of the convex plate 4 and moves out from between the two adjacent convex plates 4. After the gear lever 5 is shifted to a gear position, the positioning card plate 6 is re-stuck between the two adjacent convex plates 4 at another position under the elastic action of the elastic supporting component. The positioning card plate 6 increases the resistance encountered by the gear lever 5 during the shifting process, thereby increasing the sense of frustration during the gear switching process, preventing gear jumping during the gear switching process, and preventing the gear lever 5 from switching too quickly to damage the shift fork or break the shift shaft travel limit plate to cause gear disorder.

[0025] The elastic support assembly includes a positioning rod 8 fixed to the side of the fixing plate 7, a positioning spring 9 is sleeved on the outer side of the positioning rod 8, the positioning spring 9 is located between the positioning card plate 6 and the fixing plate 7, a guide rod 11 is fixed to the side of the fixing plate 7, the guide rod 11 and the positioning card plate 6 are slidably connected, a thread is provided on the bottom of the side of the positioning rod 8, and a positioning nut 10 is threadedly connected to the side of the positioning rod 8, the positioning spring 9 is located between the positioning nut 10 and the positioning card plate 6, the elastic sensitivity of the positioning spring 9 can be adjusted by adjusting the position of the positioning nut 10 on the positioning rod 8, thereby realizing the adjustment of the resistance size of the gear lever 5 during the gear shifting process, which is suitable for the driving habits of different people and facilitates the use of the protective device.

[0026] A positioning plate 3 is fixed on the inner side of the protective box 1, and a slideway is reserved between the positioning plate 3 and the protective box 1. The flexible baffle 2 is slidably set in the slideway. During the gear adjustment process, the positioning plate 3 positions the position of the flexible baffle 2 so that the flexible baffle 2 can slide stably in the slideway, thereby ensuring that the flexible baffle 2 plays an effective protective role.

[0027] The gear lever 5 comprises a positioning tube 51 and an adjusting rod 52. The positioning tube 51 is sealed and connected with the flexible baffle 2. The adjusting rod 52 is slidably arranged in the positioning tube 51. The side of the positioning tube 51 is evenly provided with positioning holes from top to bottom. A mounting groove is installed on the side of the adjusting rod 52. A fixing rod 53 is slidably arranged in the mounting groove, and the fixing rod 53 is snap-fitted with the positioning hole. A limit spring 55 is arranged in the mounting groove for positioning the fixing rod 53. A positioning groove connected with the mounting groove is opened on the side of the adjusting rod 52. A limit plate 54 slidably arranged in the positioning groove is fixed on the side of the fixing rod 53. The fixing rod 53 can be pushed into the mounting groove by pressing the fixing rod 53 to squeeze the limit spring 55, so that the adjusting rod 52 loses the limit of the fixing rod 53. Thereafter, the length of the adjusting rod 52 outside the positioning tube 51 can be adjusted, thereby realizing the adjustment of the length of the gear lever 5. After the adjustment is completed, the limit spring 55 pushes the fixing rod 53 to move out of the mounting groove and get stuck in the positioning hole corresponding to the mounting groove, which is convenient for the use of the gear lever 5.

[0028] When using:

[0029] When the gear lever 5 is operated to shift the tractor gearbox, the flexible baffle 2 arranged in the protective box 1 blocks foreign objects such as external dust and debris, preventing foreign objects from entering the gearbox during the gear shifting gap and affecting the use of the gearbox. During the gear adjustment process, the positioning plate 3 positions the position of the flexible baffle 2, so that the flexible baffle 2 can slide stably in the slideway, ensuring that the flexible baffle 2 plays an effective protective role;

[0030] When the gear lever 5 is pushed to shift gears, the gear lever 5 drives the flexible baffle 2 to slide in the slideway. During the movement of the flexible baffle 2, the positioning card plate 6 is squeezed by the positioning spring 9 by the force of the convex plate 4 and moves out from between two adjacent convex plates 4. After the gear lever 5 is moved to a certain position, the positioning card plate 6 is re-stuck between two adjacent convex plates 4 at another position under the elastic action of the positioning spring 9. The positioning card plate 6 increases the resistance of the gear lever 5 during the shifting process, thereby increasing the sense of frustration during the gear switching and preventing the gear from jumping during the gear switching process.

[0031] By adjusting the position of the positioning nut 10 on the positioning rod 8, the elastic sensitivity of the positioning spring 9 can be adjusted, so as to adjust the resistance of the gear lever 5 during the gear shifting process, which is suitable for the driving habits of different people and facilitates the use of the protective device;

[0032] In addition, by pressing the fixing rod 53 and squeezing the limit spring 55, the fixing rod 53 can be pushed into the installation groove, so that the adjusting rod 52 loses the limit of the fixing rod 53, and then the length of the adjusting rod 52 outside the positioning tube 51 can be adjusted, so as to adjust the length of the gear rod 5. After the adjustment is completed, the limit spring 55 pushes the fixing rod 53 out of the installation groove and is stuck in the positioning hole corresponding to the installation groove, which is convenient for the use of the gear rod 5.

[0033] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A protective device for a gear lever of a multi-speed gearbox, comprising a protective box (1) and a gear lever (5), characterized in that: An opening is provided in the middle of the upper side of the protection box (1); the shift rod (5) is located in the opening on the side of the protection box (1); a flexible baffle (2) is slidably provided at the top of the inner cavity of the protection box (1); the flexible baffle (2) is used to seal the opening; the shift rod (5) is in movable contact with the flexible baffle (2); and the connection between the flexible baffle (2) and the shift rod (5) is sealed; and a positioning member for positioning the flexible baffle (2) is provided in the protection box (1).

2. The protective device for the gear lever of a multi-speed gearbox according to claim 1, characterized in that: A plurality of convex plates (4) are fixed to the side of the flexible baffle (2); the positioning member comprises a positioning card plate (6); the positioning card plate (6) is clamped between two adjacent convex plates (4); the ends of the convex plate (4) and the ends of the positioning card plate (6) are both arranged in an arc shape; a fixing plate (7) is fixed in the protective box (1); and an elastic support component for positioning the positioning card plate (6) is arranged on the side of the fixing plate (7).

3. The protective device for the gear lever of a multi-speed gearbox according to claim 2, characterized in that: The elastic support assembly comprises a positioning rod (8) fixed to a side of a fixing plate (7); a positioning spring (9) is sleeved on the outer side of the positioning rod (8); the positioning spring (9) is located between the positioning clamping plate (6) and the fixing plate (7); a guide rod (11) is fixed to the side of the fixing plate (7); the guide rod (11) and the positioning clamping plate (6) are slidably connected.

4. The protective device for the gear lever of a multi-speed gearbox according to claim 3, characterized in that: The bottom of the side of the positioning rod (8) is provided with a thread, and the side of the positioning rod (8) is threadedly connected to a positioning nut (10), and the positioning spring (9) is located between the positioning nut (10) and the positioning clamping plate (6).

5. The protective device for the gear lever of a multi-speed gearbox according to claim 1, characterized in that: A positioning plate (3) is fixed on the inner side of the protection box (1), a slideway is reserved between the positioning plate (3) and the protection box (1), and the flexible baffle (2) is slidably arranged in the slideway.

6. The protective device for the gear lever of a multi-speed gearbox according to claim 1, characterized in that: The shift rod (5) comprises a positioning tube (51) and an adjusting rod (52), wherein the positioning tube (51) is sealedly connected to the flexible baffle (2), the adjusting rod (52) is slidably arranged in the positioning tube (51), the side surface of the positioning tube (51) is evenly provided with positioning holes from top to bottom, the side surface of the adjusting rod (52) is provided with a mounting groove, a fixing rod (53) is slidably arranged in the mounting groove, and the fixing rod (53) is snap-fitted with the positioning hole, a limiting spring (55) for positioning the fixing rod (53) is arranged in the mounting groove, a positioning groove communicating with the mounting groove is provided in the side surface of the adjusting rod (52), and a limiting plate (54) slidably arranged in the positioning groove is fixed to the side surface of the fixing rod (53).

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