Gearbox

Abstract

The utility model discloses a gearbox, and belongs to the field of transmission mechanisms. The gearbox comprises an engine upper cover, an engine lower cover, an input end connecting disc and an output end connecting disc, wherein the engine lower cover is fixedly mounted on the engine upper cover through bolts and is attached to the engine upper cover; the input end connecting disc is rotationally mounted in the engine lower cover; the output end connecting disc is rotationally mounted on the engine upper cover and is in transmission connection with the input end connecting disc; a transmission mechanism used for being in linkage with the input end connecting disc and the output end connecting disc is movably installed in the engine upper cover and comprises an input gear and an output gear which are rotatably installed in the engine upper cover, the input gear and the output gear are meshed with each other, and the diameter of the output gear is larger than that of the input gear. The input gear is coaxially connected with the input end connecting disc, and the output gear is coaxially connected with the output end connecting disc. The gearbox is simple in structure, convenient to assemble, smaller in occupied space and suitable for lightweight design.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of transmission mechanisms, and particularly relates to a gearbox. BACKGROUND

[0002] A gearbox is a mechanism used to change the speed and torque of power from an engine, and can fix or change the transmission ratio of an output shaft and an input shaft in several gears. The gearbox is composed of a transmission mechanism and a control mechanism, and some automobiles have a power output mechanism. The transmission mechanism is mostly composed of common gear transmission, and some are composed of planetary gear transmission. The common gear transmission mechanism is generally composed of a sliding gear and a synchronizer.

[0003] The existing gearbox has a complex structure, many transmission components, and is difficult to assemble, and there is a lack of a gearbox which is simple in structure and convenient to assemble while stably outputting power.

[0004] Therefore, the application provides a gearbox to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides a gearbox, and aims to solve the problems that the existing gearbox has a complex structure, many transmission components, and is difficult to assemble, and there is a lack of a gearbox which is simple in structure and convenient to assemble while stably outputting power.

[0006] To achieve the above object, the application provides the following technical scheme: a gearbox, comprising an engine upper cover, an engine lower cover fixedly installed on the engine upper cover and arranged in close contact with the engine upper cover, an input end connecting disc rotatably installed in the engine lower cover, and an output end connecting disc rotatably installed on the engine upper cover and in transmission connection with the input end connecting disc, a shaft coupling is inserted on the input end connecting disc, a shaft coupling gear ring is sleeved on the shaft coupling, and a transmission mechanism for connecting the input end connecting disc and the output end connecting disc is movably installed in the engine upper cover.

[0007] The transmission mechanism comprises an input gear and an output gear rotatably mounted in the upper cover of the engine, the input gear and the output gear are in mesh with each other, the diameter of the output gear is larger than that of the input gear, the input gear is coaxially connected with the input end connecting disc, and the output gear is coaxially connected with the output end connecting disc. In use, the shaft coupling is mounted on the input end connecting disc, the shaft coupling gear ring is mounted on the shaft coupling, and the shaft coupling is connected with the power output end, so that the assembly is completed, then the output end connecting disc is connected with the power output end, the input end inputs power, the input end connecting disc drives the input gear to rotate, the input gear drives the output gear to rotate, and since the diameter of the output gear is larger than that of the input gear, the output gear reduces the input rotating speed and increases the output torque, so that the output end connecting disc stably outputs power to the output end. The device is simple in structure, easy to assemble, smaller in occupied space, and suitable for lightweight design.

[0008] Preferably, in order to quickly connect, an input gear shaft is fixedly installed on the input gear, one end of the input gear shaft penetrates the lower cover of the engine and is spline-connected with the input end connecting disc, a first bolt is screwed on the end of the input gear shaft close to the input end connecting disc, and the first bolt is arranged on the outer side wall of the input end connecting disc in abutment, so as to fix the input gear and the input end connecting disc, thereby facilitating quick installation and stably inputting power.

[0009] Preferably, in order to quickly connect, an output gear shaft is fixedly installed on the output gear, one end of the output gear shaft penetrates the upper cover of the engine and is spline-connected with the output end connecting disc, a second bolt is screwed on the end of the output gear shaft close to the output end connecting disc, and the second bolt is arranged on the outer side wall of the output end connecting disc in abutment, so as to fix the output gear and the output end connecting disc, thereby facilitating quick installation and stably outputting power.

[0010] Preferably, in order to protect the input gear shaft, first and second support holes are respectively formed in positions corresponding to the input gear shaft and the output gear shaft on the upper cover of the engine, one end of the input gear shaft away from the input end connecting disc is inserted into the first support hole, and a first end cover is clamped in the first support hole to avoid the influence of external factors.

[0011] Preferably, in order to protect the output gear shaft, one end of the output gear shaft close to the output end connecting disc is inserted into the second support hole, a second end cover is clamped in the second support hole, and the output gear shaft penetrates the second end cover, so as to protect the output gear shaft and stably operate.

[0012] Preferably, in order to protect the output gear shaft, the third support hole and the fourth support hole corresponding to the input gear shaft and the output gear shaft are arranged on the engine lower cover, the input gear shaft is arranged through the third support hole, and the output gear shaft is inserted into the fourth support hole away from the output end connecting disc, and the threaded end cover is screwed on the fourth support hole to avoid external factors.

[0013] The transmission is assembled by mounting the coupling on the input end connecting disc, mounting the coupling gear ring on the coupling, and connecting the power output end, and then connecting the output end connecting disc with the power output end, inputting power at the input end, driving the input gear to rotate by the input end connecting disc, driving the output gear to rotate by the input gear, reducing the input rotating speed and increasing the output torque by the output gear, and driving the output end connecting disc to stably output power by the output end.

[0014] The transmission is assembled by mounting the coupling on the input end connecting disc, mounting the coupling gear ring on the coupling, and connecting the power output end, and then connecting the output end connecting disc with the power output end, inputting power at the input end, driving the input gear to rotate by the input end connecting disc, driving the output gear to rotate by the input gear, reducing the input rotating speed and increasing the output torque by the output gear, and driving the output end connecting disc to stably output power by the output end. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front structure schematic diagram of a transmission;

[0016] Figure 2 It is a back structure schematic diagram of a transmission;

[0017] Figure 3 It is a front exploded structure schematic diagram of a transmission;

[0018] Figure 4 It is a back exploded structure schematic diagram of a transmission;

[0019] Figure 5 It is a cross-sectional structure schematic diagram of a transmission.

[0020] In the figure:

[0021] 1, engine upper cover; 11, first support hole; 12, second support hole; 13, first end cover; 14, second end cover; 2, engine lower cover; 21, third support hole; 22, fourth support hole; 23, threaded end cover; 3, input end connecting disc; 31, coupling; 32, coupling gear ring; 4, output end connecting disc; 5, transmission mechanism; 51, input gear; 52, output gear; 53, input gear shaft; 54, first bolt; 55, output gear shaft; 56, second bolt. DETAILED DESCRIPTION

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example 1

[0024] This embodiment provides a gearbox, such as Figures 1-5 As shown, the gearbox includes an engine cover 1, an engine lower cover 2 bolted to the engine cover 1 and fitted to the engine cover 1, an input end connecting plate 3 rotatably mounted inside the engine lower cover 2, and an output end connecting plate 4 rotatably mounted on the engine cover 1 and driven by the input end connecting plate 3. A coupling 31 is inserted into the input end connecting plate 3, and a coupling gear ring 32 is fitted on the coupling 31. A transmission mechanism 5 for linking the input end connecting plate 3 and the output end connecting plate 4 is movably mounted inside the engine cover 1.

[0025] The transmission mechanism 5 includes an input gear 51 and an output gear 52 rotatably mounted inside the engine cover 1. The input gear 51 and the output gear 52 mesh with each other. The diameter of the output gear 52 is larger than the diameter of the input gear 51. The input gear 51 is coaxially connected to the input end connecting plate 3, and the output gear 52 is coaxially connected to the output end connecting plate 4.

[0026] In use, the coupling 31 is installed on the input end connecting plate 3, and the coupling gear ring 32 is installed on the coupling 31 and connected to the power output end to complete the assembly. Then, the output end connecting plate 4 is connected to the power output end, and power is input to the input end. The input end connecting plate 3 drives the input gear 51 to rotate, and the input gear 51 drives the output gear 52 to rotate. Since the output gear 52 is larger than the input gear 51, the output gear 52 reduces the input speed and increases the output torque, so that the output end connecting plate 4 drives the output end to output power stably. This device has a simple structure, is easy to assemble, occupies less space, and is suitable for lightweight design.

[0027] Specifically, an input gear shaft 53 is fixedly installed on the input gear 51. One end of the input gear shaft 53 passes through the engine lower cover 2 and is splinedly connected to the input end connecting plate 3. A first bolt 54 is screwed onto the end of the input gear shaft 53 near the input end connecting plate 3. The first bolt 54 is fitted and set on the outer wall of the input end connecting plate 3.

[0028] In use, the input gear shaft 53 of the input gear 51 is inserted into the first support hole 11, and then the first end cap 13 is clamped into the first support hole 11 to protect the end of the input gear shaft 53 from external factors.

[0029] More specifically, the output gear shaft 55 is fixedly installed on the output gear 52, one end of the output gear shaft 55 is inserted into the second support hole 12, and the second end cap 14 is clamped in the second support hole 12.

[0030] In use, the output gear shaft 55 of the output gear 52 is inserted into the second support hole 12, and then the second end cap 14 is clamped into the second support hole 12 to protect the end of the output gear shaft 55 from external factors.

[0031] Example 2

[0032] The first support hole 11 and the second support hole 12 are respectively provided on the engine cover 1 corresponding to the positions of the input gear shaft 53 and the output gear shaft 55, one end of the input gear shaft 53 away from the input end connecting plate 3 is inserted into the first support hole 11, and the first end cap 13 is clamped in the first support hole 11.

[0033] In use, the input gear shaft 53 is inserted into the first support hole 11, and then the first end cap 13 is clamped into the first support hole 11 to protect the end of the input gear shaft 53 from external factors.

[0034] Further, one end of the output gear shaft 55 close to the output end connecting plate 4 is inserted into the second support hole 12, the second end cap 14 is clamped in the second support hole 12, and the output gear shaft 55 is inserted through the second end cap 14.

[0035] In use, the end of the output gear shaft 55 is inserted into the second support hole 12, and then the second end cap 14 is clamped into the second support hole 12 to protect the end of the output gear shaft 55 from external factors.

[0036] Example 3

[0037] The third support hole 21 and the fourth support hole 22 are formed on the engine lower cover 2, corresponding to the input gear shaft 53 and the output gear shaft 55. The input gear shaft 53 is arranged through the third support hole 21, and the output gear shaft 55 is inserted into the fourth support hole 22 at the end away from the output end connecting disc 4. The threaded end cover 23 is screwed on the fourth support hole 22.

[0038] In use, the input gear shaft 53 is inserted into the third support hole 21 and fixed with the input end connecting disc 3, the output gear shaft 55 is inserted into the fourth support hole 22, and then the threaded end cover 23 is screwed into the fourth support hole 22 to protect the end of the output gear shaft 55 from external factors.

[0039] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and its concept of the present application, within the technical range disclosed by the present application, makes equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A gearbox, comprising an engine cover (1), an engine cover (2) bolted to the engine cover (1) and fitted to the engine cover (1), an input end connecting plate (3) rotatably mounted inside the engine cover (2), and an output end connecting plate (4) rotatably mounted on the engine cover (1) and drivenly connected to the input end connecting plate (3), wherein a coupling (31) is inserted into the input end connecting plate (3), a coupling gear ring (32) is sleeved on the coupling (31), and a transmission mechanism (5) for linking the input end connecting plate (3) and the output end connecting plate (4) is movably mounted inside the engine cover (1), characterized in that: The transmission mechanism (5) includes an input gear (51) and an output gear (52) rotatably mounted in the engine cover (1). The input gear (51) and the output gear (52) mesh with each other. The diameter of the output gear (52) is larger than the diameter of the input gear (51). The input gear (51) is coaxially connected to the input end connecting plate (3), and the output gear (52) is coaxially connected to the output end connecting plate (4).

2. The gearbox according to claim 1, characterized in that: An input gear shaft (53) is fixedly installed on the input gear (51). One end of the input gear shaft (53) passes through the engine lower cover (2) and is splinedly connected to the input end connecting plate (3). A first bolt (54) is screwed onto one end of the input gear shaft (53) near the input end connecting plate (3). The first bolt (54) is fitted onto the outer wall of the input end connecting plate (3).

3. A gearbox according to claim 2, characterized in that: An output gear shaft (55) is fixedly installed on the output gear (52). One end of the output gear shaft (55) passes through the engine cover (1) and is splinedly connected to the output end connecting plate (4). A second bolt (56) is screwed onto one end of the output gear shaft (55) near the output end connecting plate (4). The second bolt (56) is fitted onto the outer wall of the output end connecting plate (4).

4. A gearbox according to claim 3, characterized in that: The engine cover (1) is provided with a first support hole (11) and a second support hole (12) at the positions corresponding to the input gear shaft (53) and the output gear shaft (55), respectively. The end of the input gear shaft (53) away from the input end connecting plate (3) is inserted into the first support hole (11), and a first end cap (13) is snapped into the first support hole (11).

5. A gearbox according to claim 4, characterized in that: One end of the output gear shaft (55) near the output end connecting plate (4) is inserted into the second support hole (12), and a second end cover (14) is snapped into the second support hole (12). The output gear shaft (55) is set through the second end cover (14).

6. A gearbox according to claim 3, characterized in that: The engine lower cover (2) is provided with a third support hole (21) and a fourth support hole (22) corresponding to the input gear shaft (53) and the output gear shaft (55). The input gear shaft (53) is provided through the third support hole (21). The end of the output gear shaft (55) away from the output end connecting plate (4) is inserted into the fourth support hole (22). A threaded end cap (23) is screwed onto the fourth support hole (22).

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