Gear shifting locking mechanism of gear box

Abstract

The gear shifting locking mechanism comprises the gear box, a rotating shaft is rotationally installed on the gear box, a gear shifting assembly is installed at the end, located in the gear box, of the rotating shaft, a clamping jaw is fixed to the end, located outside the gear box, of the rotating shaft, and a clamping groove is formed in one side of the clamping jaw. A first connecting pin is installed on the gearbox and located in the clamping groove. A shift lever is rotatably mounted at one end, outside the gearbox, of the rotating shaft, and a shifting pin is fixed to one end, close to the first connecting pin, of the shift lever and located in the clamping groove; a second connecting pin is installed at the end, away from the shifting pin, of the gear shifting rod, and an elastic piece is installed between the first connecting pin and the second connecting pin and staggered with the rotating shaft. The gear shifting rod is tensioned through the elastic piece between the first connecting pin and the second connecting pin, the connecting lines between the first connecting pin and the rotating shaft and between the second connecting pin and the rotating shaft are triangular, the elastic piece can buffer vibration generated during work, and the gear locking stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a gearbox shifting locking mechanism. Background Technology

[0002] Gearboxes play an important role in industrial transmission. During use, gears need to be switched as needed. Traditional gear shifting mechanisms rely on a pin on the gear shift lever to lock the gear after shifting to prevent disengagement.

[0003] However, the existing gear shifting mechanism has low gear locking reliability. Especially under conditions of high vibration, when the steel ball and groove wear out significantly, or when the spring compression preload is insufficient, it is very easy for the gear to disengage, thereby damaging the engagement sleeve or gear.

[0004] Based on the above-mentioned technical problems, this application proposes a gearbox shifting locking mechanism. Utility Model Content

[0005] The purpose of this utility model is to provide a gearbox shifting locking mechanism to solve the technical problems mentioned in the background art. This purpose is achieved through the following technical solution:

[0006] A gearbox shifting locking mechanism includes a gearbox, a rotating shaft rotatably mounted on the gearbox, a shifting assembly mounted on one end of the rotating shaft inside the gearbox, and a pawl fixed to the other end of the rotating shaft outside the gearbox, with a slot formed on one side of the pawl; a first connecting pin mounted on the gearbox, the first connecting pin being located within the slot; a shift lever rotatably mounted on the other end of the rotating shaft outside the gearbox, a paddle pin fixed to the end of the shift lever near the first connecting pin, the paddle pin being located within the slot; a second connecting pin mounted on the end of the shift lever away from the paddle pin, and an elastic element installed between the first and second connecting pins, the elastic element being offset from the rotating shaft.

[0007] Furthermore, the outer diameter of the first connecting pin is smaller than the size of the slot, and the outer diameter of the push pin is smaller than the size of the first connecting pin.

[0008] Furthermore, the elastic element is a tension spring.

[0009] Furthermore, the shift assembly includes a shift fork and a shift fork ring, with the shift fork fixedly connected to the pivot shaft and the shift fork ring rotatably mounted on the shift fork.

[0010] The technical solutions provided in this application have at least the following technical effects or advantages:

[0011] The shift lever is tightened by the elastic element between the first and second connecting pins, so that the line connecting the first and second connecting pins and the rotating shaft forms a triangle. The elastic element can also buffer the vibration generated during operation, improve the stability of gear locking, and extend the service life of the gearbox. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 This is a schematic diagram of the gear shifting locking mechanism in an embodiment of this application;

[0014] Figure 2 This is a schematic diagram of the gear shifting and locking mechanism in the embodiment of this application;

[0015] Figure 3 This is a schematic diagram of the gear shifting locking mechanism in the engaged state according to an embodiment of this application.

[0016] The following components are labeled in the attached diagram: 1. Gearbox; 2. Gear assembly; 3. Shaft; 4. Shift assembly; 41. Shift fork; 42. Shift fork ring; 5. Claw; 51. Claw groove; 6. First connecting pin; 7. Shift lever; 71. Shift pin; 8. Second connecting pin; 9. Elastic element. Detailed Implementation

[0017] To better understand the above technical solutions, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, will illustrate the technical solutions. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] like Figures 1-3 The gearbox shifting and locking mechanism shown includes a gearbox 1, a gear assembly 2 installed inside the gearbox 1, and a rotating shaft 3 rotatably mounted on the side wall of the gearbox 1. A shifting assembly 4 is installed at one end of the rotating shaft 3 inside the gearbox 1. The shifting assembly 4 is used to engage or disengage the gear assembly 2. The shifting assembly 4 includes a shift fork 41 and a shift fork ring 42. The shift fork 41 is a semi-circular ring structure and is fixed to the side of the rotating shaft 3. The shift fork ring 42 is a circular ring structure and is rotatably mounted between the two ends of the shift fork 41. When the rotating shaft 3 rotates, the shift fork 41 drives the shift fork ring 42 to move axially along the gear assembly 2, thereby engaging or disengaging the gearbox.

[0019] like Figures 1-3As shown, a pawl 5 is fixed to one end of the rotating shaft 3 outside the gearbox 1, and the pawl 5 can drive the rotating shaft 3 to rotate synchronously. A groove 51 is provided on the right end face of the pawl 5. A first connecting pin 6 is vertically installed on the side wall of the gearbox 1. The outer diameter of the first connecting pin 6 is smaller than the size of the groove 51. The first connecting pin 6 is at the same vertical height as the rotating shaft 3, and the first connecting pin 6 is located in the groove of the groove 51.

[0020] like Figures 1-3 As shown, a shift lever 7 is rotatably mounted on the outer end of the rotating shaft 3. The shift lever 7 is a strip-shaped plate and can rotate relative to the chuck 5. A paddle pin 71 is mounted on the right end of the shift lever 7. The outer diameter of the paddle pin 71 is smaller than the outer diameter of the first connecting pin 6, and the paddle pin 71 is located at the bottom of the slot 51. A second connecting pin 8 is mounted on the left end of the shift lever 7. Both the paddle pin 71 and the second connecting pin 8 are located on the central axis of the shift lever 7. An elastic element 9, which is a tension spring, is installed between the first connecting pin 6 and the second connecting pin 8.

[0021] like Figure 1 , Figure 2 As shown, when the gearbox is in the shifted state, the upper end face of the slot 51 abuts against the upper side wall of the first connecting pin 6, and the shift pin 71 abuts against the lower end face of the slot 51, so that the line connecting the rotating shaft 3, the first connecting pin 6, and the second connecting pin 8 forms a triangle, and the elastic element 9 stretches the first connecting pin 6 and the second connecting pin 8 to ensure that the shifting assembly 4 is stably in the shifted state.

[0022] like Figure 3 As shown, when the shift lever 7 is rotated counterclockwise, the shift pin 71 moves upward and abuts against the upper end face of the slot 51. The shift lever 7 continues to rotate, and the shift pin 71 pushes the pawl 5 to rotate counterclockwise, causing the rotating shaft 3 to rotate. This, in turn, causes the shift fork ring 42 to move to the right via the shift fork 41. When the lower end face of the slot 51 abuts against the lower side wall of the first connecting pin 6, the shift fork ring 42 is in the engaged position. At this time, the line connecting the rotating shaft 3, the first connecting pin 6, and the second connecting pin 8 forms a triangle, and the elastic element 9 stretches the first connecting pin 6 and the second connecting pin 8, ensuring that the shift assembly 4 is stably in the engaged state. The shift lever 7 can be moved manually, by an electric actuator, or by a cylinder.

[0023] The technical solutions provided in this application have at least the following technical effects or advantages:

[0024] The shift lever is tightened by the elastic element between the first and second connecting pins, so that the line connecting the first and second connecting pins and the rotating shaft forms a triangle. The elastic element can also buffer the vibration generated during operation, improve the stability of gear locking, and extend the service life of the gearbox.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gearbox shifting locking mechanism, characterized in that, The device includes a gearbox, on which a rotating shaft is rotatably mounted. A shift assembly is mounted at one end of the rotating shaft inside the gearbox, and a pawl is fixed at the other end of the rotating shaft outside the gearbox. A slot is formed on one side of the pawl. A first connecting pin is mounted on the gearbox and is located within the slot. A shift lever is rotatably mounted at the other end of the rotating shaft outside the gearbox. A paddle pin is fixed at the end of the shift lever near the first connecting pin and is located within the slot. A second connecting pin is mounted at the end of the shift lever away from the paddle pin. An elastic element is installed between the first and second connecting pins, and the elastic element is offset from the rotating shaft.

2. The gearbox shifting locking mechanism according to claim 1, characterized in that, The outer diameter of the first connecting pin is smaller than the size of the slot, and the outer diameter of the push pin is smaller than the size of the first connecting pin.

3. The gearbox shifting locking mechanism according to claim 1, characterized in that, The elastic element is a tension spring.

4. A gearbox shifting locking mechanism according to claim 1, characterized in that, The shifting assembly includes a shift fork and a shift fork ring. The shift fork is fixedly connected to the rotating shaft, and the shift fork ring is rotatably mounted on the shift fork.

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