Transmission case and mower

Abstract

The invention discloses a transmission case and a mower, and relates to the technical field of transmission equipment, and the transmission case comprises a gear shifting main body assembly used for being connected with a gear shifting control handle to achieve rotation; the connecting piece is connected to the gear shifting main body assembly, and when the gear shifting control handle drives the gear shifting main body assembly to rotate, the gear shifting main body assembly can rotate to generate force for driving the connecting piece to move; two transmission gears which are coaxially arranged are arranged on the gear shifting shaft, the gear shifting shaft can rotate in two opposite directions through transmission of the two transmission gears, and forward movement and backward movement of wheels are correspondingly achieved; and one end of the shifting fork assembly is fixed to the connecting piece, the other end of the shifting fork assembly is arranged on the gear shifting shaft and located between the two transmission gears, and axial movement of the shifting fork assembly on the gear shifting shaft can be achieved through movement of the connecting piece, so that the shifting fork assembly can be in meshing transmission with any transmission gear or can be separated from any transmission gear. The transmission case is simple and effective in gear shifting structure and low in use cost.

Claims

1. A transmission box, characterized in that: include: A gear shift body assembly (10) used to connect to a gear shift operating handle (5) to achieve rotation; A connecting member (108) connected to the gear shift main body component (10), wherein when the gear shift operating handle (5) drives the gear shift main body component (10) to rotate, the gear shift main body component (10) can rotate to generate a force that drives the connecting member (108) to move; A shift shaft (30) is arranged in parallel with the connecting member (108), and two coaxially arranged transmission gears (50) are provided on the shift shaft (30), and the transmission of the two transmission gears (50) can respectively realize the rotation of the shift shaft (30) in two opposite directions, thereby correspondingly realizing the forward and reverse movement of the wheels (2); A shift fork assembly (20), one end of the shift fork assembly (20) being fixed to the connecting member (108), the other end of the shift fork assembly (20) being arranged on the shift shaft (30) and being located between the two transmission gears (50), the movement of the connecting member (108) being able to realize axial movement of the shift fork assembly (20) on the shift shaft (30), so that the shift fork assembly (20) can mesh with any of the transmission gears (50) for transmission or can be separated from any of the transmission gears (50).

2. The transmission box according to claim 1, characterized in that: The shift fork assembly (20) comprises a shift fork plate (201) fixed to the connecting member (108), both sides of the shift fork plate (201) are connected to a shift gear (202), an inner ring of the shift gear (202) is movably arranged on the shift shaft (30), and an outer ring of the shift gear (202) is used to mesh with the transmission gear (50).

3. The transmission box according to claim 1, characterized in that: The shift body assembly (10) comprises a shift paddle (102), the shift paddle (102) being provided with a shift slot (1021), the connecting member (108) being provided with a locking shaft (1081) cooperating with the shift slot (1021), and when the shift paddle (102) is rotated, the shift slot (1021) can push the locking shaft (1081) to move in a first direction or a second direction, the first direction and the second direction being opposite and both parallel to the axial direction of the shift shaft (30).

4. The transmission box according to claim 3, characterized in that: The shift body assembly (10) comprises an operating plate (103), a shift arm (101), and a fixing member (109); the operating plate (103) and the shift arm (101) are both sleeved on a first end of the fixing member (109); and the shift paddle (102) is disposed on a second end of the fixing member (109); The shift arm (101) is used to connect to the shift operating handle (5); when the shift arm (101) is pushed by the shift operating handle (5), the shift arm (101) can drive the operating plate (103) to rotate, thereby rotating the shift paddle (102).

5. The transmission box according to claim 4, characterized in that: Rotation limiting holes (1031) are provided at two positions symmetrically about the fixing member (109) on the control plate (103), and positioning studs (104) are provided in the two rotation limiting holes (1031). The shift arm (101) can be pushed to contact any of the positioning studs (104) to push the control plate (103) to rotate, so as to achieve switching of the control plate (103) from an initial state to a shift state; At least two corresponding ends of the two positioning studs (104) are connected via a first elastic member (105), and the first elastic member (105) is used to provide a restoring force for the operating plate (103) from the shifting state to the initial state.

6. The transmission box according to claim 5, characterized in that: Two shift limit plates (106) are sleeved on the outer periphery of the fixing member (109) along the axial direction of the fixing member (109); the operating plate (103) has an ear portion (1032) extending in the direction of the shift paddle plate (102); the ear portion (1032) is located between the two shift limit plates (106), and the two shift limit plates (106) are connected via a second elastic member (107); When the operating plate (103) rotates, the ear (1032) can push any of the shift limit plates (106) to rotate, so as to stretch the second elastic member (107) to obtain a restoring force that can be used to move the operating plate (103) from the shift state to the initial state.

7. The transmission box according to claim 6, characterized in that: It also includes a first box body (90), the shift limit plate (106), the operating plate (103) and the shift arm (101) are all located outside the first box body (90), and the fixing member (109) partially extends into the first box body (90) to be connected to the shift paddle (102); Two limit bars (901) are provided on the first box body (90), the limit bars (901) are arranged parallel to the axis of the fixing member (109), and the shift limit plate (106) can contact the limit bars (901) to limit the position.

8. The transmission box according to any one of claims 1 to 7, characterized in that: It also includes an input shaft mechanism (70) capable of transmitting power and a half-shaft assembly (60), wherein the input shaft mechanism (70) includes a driving gear (701), the axis direction of the driving gear (701) is perpendicular to the axis direction of the transmission gear (50), and the driving gear (701) is meshed with the transmission gear (50); The shift shaft (30) is also provided with a first transmission member (40), and the first transmission member (40) can be connected to the half-shaft assembly (60) to transmit power to drive the wheel (2) connected to the half-shaft assembly (60).

9. The transmission box according to claim 8, characterized in that: The half-shaft assembly (60) comprises a second transmission member (601) transmission-connected to the first transmission member (40), a planetary gear (602) arranged in the second transmission member (601), a half-shaft gear (603) and a half-shaft (604), wherein the axis directions of the planetary gear (602) and the second transmission member (601) are perpendicular and the two are connected, and the axes of the second transmission member (601), the half-shaft gear (603) and the half-shaft (604) are arranged in parallel; The second transmission member (601) is provided with two planetary gears (602) connected via a transmission shaft, and the two half-shaft gears (603) correspondingly connected to the two half-shafts (604) are transmission-connected via the two planetary gears (602).

10. A lawn mower, characterized in that: include: A transmission box (1), a transmission box (1) as claimed in any one of claims 1 to 9; A vehicle frame (3), the transmission box (1) being connected to the vehicle frame (3), the vehicle frame (3) being provided with at least the gear shift operating handle (5), the gear shift operating handle (5) being connected to the gear shift main body assembly (10) via a push plate (7); The accelerator pedal mechanism (4) is used to transmit power to the input shaft mechanism (70) to achieve vehicle speed regulation.

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