Reduction gear for electrically driven damper

Abstract

This utility model discloses a speed reducer for an electric damper, comprising: a first drive shaft, with a first power input end and a first power output end at its two ends; a second drive shaft, with a second power input end and a second power output end at its two ends; a first gear is provided on the first drive shaft, and a second gear is provided on the second drive shaft, the first gear meshing with the second gear; power from the first power input end is directly transmitted to the first power output end and then output, or power from the second power input end is transmitted to the first power input end through the second gear and the first gear, and then output from the first power output end. This utility model's speed reducer for an electric damper provides two input ends and a first output end, allowing one speed reducer to accommodate the installation of two actuators, reducing space requirements.

Description

Technical Field

[0001] This utility model relates to the field of electric damper technology, and in particular to a speed reducer for electric dampers. Background Technology

[0002] Currently, the dampers of the main ventilation fans on the surface of coal mines are all driven by electric valve actuators. These actuators have electric switching capabilities, allowing the dampers to be controlled locally or remotely.

[0003] In operation, airlocks typically use one or two sets of electric actuators to drive the airlock from one side. In existing airlocks, one actuator is usually directly connected to the airlock via a reducer. However, since the actuator and reducer need to be connected via couplings or other components, this becomes unsuitable when the space inside the mine is limited and multiple actuators are required. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the technical problem that the installation requirements of actuators cannot be met in a narrow space in the prior art, this utility model provides a reducer for electric dampers, which has two input ends and a first output end, so that one reducer can meet the installation of two sets of actuators and reduce the space occupied.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a reducer for an electric damper, comprising: a first drive shaft, the two ends of the first drive shaft being a first power input end and a first power output end respectively; a second drive shaft, the two ends of the second drive shaft being a second power input end and a second power output end respectively; a first gear is provided on the first drive shaft, and a second gear is provided on the second drive shaft, the first gear meshing with the second gear; the power from the first power input end is directly transmitted to the first power output end and then outputs power, or the power from the second power input end is transmitted to the first power input end through the second gear and the first gear, and then outputs power from the first power output end.

[0006] This utility model relates to a reducer for electric dampers. It can selectively receive power from either the first or second drive shaft, and output power to the damper using only the first power output end. The reducer has two input ends and one output end, which allows it to be matched with two sets of actuators, saving installation space.

[0007] Furthermore, in order to directly transmit the power from the second power output end to the first power input end, the first gear is installed on the outside of the first power input end, and the second gear is installed on the outside of the second power output end.

[0008] Furthermore, the first gear and the second gear are bevel gears. Therefore, the reducer is a bevel gear reducer.

[0009] Furthermore, in order for the actuator to output power through the reducer, the first power input end of the first drive shaft and the second power input end of the second drive shaft are respectively connected to the actuator. Both actuators include a power output shaft, and the two power output shafts are directly connected to the first power input end and the second power input end, respectively.

[0010] Furthermore, in order to reduce the required installation space, the power output shaft is directly connected to the first power input end or the second power input end via a shaft key.

[0011] Furthermore, in order to achieve the connection between the shafts, the first power input end or the second power input end has a connection hole, and the shaft end of the power output shaft is directly inserted into the connection hole.

[0012] Furthermore, in order to ensure the rotational accuracy of the first drive shaft, a first bearing is connected to the first power input end, the first bearing is located below the first gear, and a second bearing is also connected to the first power output end.

[0013] Furthermore, to ensure the rotational accuracy of the second drive shaft, a third bearing is connected to the second power input end, and a fourth bearing is connected to the second power output end, with the fourth bearing located behind the second gear.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model is used for a reducer for electric dampers. The reducer is adjusted to have two input ends and one output end, so that the two input ends can selectively transmit power to the output end, which meets the installation requirements of two sets of actuators and reduces the space occupied.

[0016] 2. The reducer of this utility model for electric damper assembles the power output shaft with the first transmission shaft and the second transmission shaft in a direct connection manner, omitting the coupling and reducing the space occupied by the coupling.

[0017] 3. The reducer of this utility model for electric damper supports the first drive shaft through the first bearing and the second bearing, and supports the second drive shaft through the third bearing and the fourth bearing, so as to ensure the stability of the position of the first drive shaft and the second drive shaft and ensure the coaxiality of the first drive shaft, the second drive shaft and the power output shaft. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1This is a schematic diagram of the reducer for an electric damper according to the present invention;

[0020] Figure 2 This is a schematic diagram of the speed reducer.

[0021] Figure 3 This is a schematic diagram of the actuator.

[0022] In the picture:

[0023] 1. Actuator; 11. Power input shaft; 12. Power output shaft; 13. Clutch assembly; 131. First clutch; 132. Second clutch; 133. Elastic element; 134. Engaging part; 1341. Pawl; 1342. Slot; 135. Bearing.

[0024] 2. Reducer; 21. First drive shaft; 211. First power input end; 212. First power output end; 22. Second drive shaft; 221. Second power input end; 222. Second power output end; 23. First gear; 24. Second gear; 25. First bearing; 26. Second bearing; 27. Third bearing; 28. Fourth bearing. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 and Figure 2 As shown, a reducer for an electric damper includes a first drive shaft 21 and a second drive shaft 22. The first drive shaft 21 has a first power input end 211 and a first power output end 212 at its two ends, respectively. The second drive shaft 22 has a second power input end 221 and a second power output end 222 at its two ends, respectively. A first gear 23 is provided on the first drive shaft 21, and a second gear 24 is provided on the second drive shaft 22; the first gear 23 meshes with the second gear 24.

[0029] Preferably, the power from the first power input end 211 is directly transmitted to the first power output end 212 and then output, or the power from the second power input end is transmitted to the first power input end 211 through the second gear 24 and the first gear 23, and then output from the first power output end 212. The first gear 23 is installed on the outside of the first input end, and the second gear 24 is installed on the outside of the second output end.

[0030] That is, the reducer 2 in this application is a bevel gear reducer. Unlike conventional bevel gear reducers, the bevel gear reducer in this embodiment has two power input paths and one power output path. The first power input path involves external power being transmitted to the first power input end 211 and outputting power through the first power output end 212. The second power input path involves external power being transmitted to the second power input end 221, which in turn transmits power to the second power output end 222, then through the second gear 24 to the first gear 23, and finally output from the first power input end 211 through the first power output end 212.

[0031] In Example 2, based on Example 1, the first power input end 211 of the first drive shaft 21 and the second power input end 221 of the second drive shaft 22 are respectively connected to actuators. Actuator 1 includes a power input shaft 11 and a power output shaft 12. The power from the power input shaft 11 is selectively transmitted to the power output shaft 12 via a clutch assembly 13. The clutch assembly 13 serves to transmit or disconnect power.

[0032] Since the power of both actuators 1 in this application is ultimately output to the damper through the first drive shaft 21, and the first drive shaft 21 and the second drive shaft 22 are always connected by the first bevel gear 23 and the second bevel gear 24, the first drive shaft 21 and the second drive shaft 22 are always rotating regardless of which actuator is working. Therefore, in order to avoid transmitting power to the actuator in the non-working state, the clutch assembly 13 can cut off the power transmission of the actuator, so that the power output shaft 12 of the actuator in the non-working state is in the idling state.

[0033] Preferably, the clutch assembly 13 includes a first clutch 131 and a second clutch 132. The first clutch 131 is connected to the power output shaft 12 via an involute spline and is movable horizontally relative to the power output shaft 12. An elastic element 133 is connected to the first clutch 131. The second clutch 132 is connected to the power input shaft 11 via an involute spline and is movable horizontally relative to the power input shaft 11. The opposing end faces of the first clutch 131 and the second clutch 132 have mating engagement portions 134. After the end faces of the first clutch 131 and the second clutch 132 are engaged, the power from the power input shaft 11 is transmitted to the power output shaft 12 through the second clutch 132 and the first clutch 131, realizing the rotation of the power output shaft 12. When the end faces of the first clutch 131 and the second clutch 132 are separated, there is no power transmission between the power output shaft 12 and the power input shaft 11.

[0034] Preferably, since the power output shaft 12 and the power input shaft 11 cannot be directly connected, and coaxiality between them needs to be ensured, this application processes a blind hole at the end of the power output shaft 12 and installs a bearing 135, preferably a needle roller bearing, within the blind hole. Connecting the front end of the power input shaft to the needle roller bearing ensures coaxial assembly of the power input shaft 11 and the power output shaft 12. Furthermore, when the first clutch 131 and the second clutch 132 are disengaged, power is not transmitted between the power input shaft 11 and the power output shaft 12 via the needle roller bearing, and the power output shaft remains in an idling state.

[0035] Specifically, the engagement part 134 includes at least two jaws 1341 and a groove 1342. When the jaws 1341 are engaged with the grooves 1342, the first clutch 131 and the second clutch 132 are engaged. In this embodiment, a two-jaw clutch is used, but a three-jaw or four-jaw clutch can achieve the same function.

[0036] In Example 3, based on Example 2, the power output shaft 12 is directly connected to the first power input end 211 or the second power input end 221 via a key. The power output shaft 12 has a shaft head, and the first power input end 211 or the second power input end 221 has a connecting hole, into which the shaft head of the power output shaft 12 is directly inserted. In this example, the power output shaft 12 is directly connected to the first drive shaft 21 or the second drive shaft 22, instead of using a coupling. Couplings require a large amount of space, and the space at the bottom of a mine is limited; using a coupling would result in an excessively long overall length after connecting the actuator 1 and the reducer 2. Therefore, a direct connection between the power output shaft 12 and the first drive shaft 21 or the second drive shaft 22 is used to save space.

[0037] Specifically, a first bearing 25 is connected to the first power input end 211, located below the first gear 23. A second bearing 26 is also connected to the first power output end 212. A third bearing 27 is connected to the second power input end 221, and a fourth bearing 28 is connected to the second power output end 222, located behind the second gear 24. To ensure the coaxiality of the power output shaft 12 with the first drive shaft 21 or the second drive shaft 22, and to support the first drive shaft 21 or the second drive shaft 22, the first bearing 25 and the second bearing 26 are respectively provided on the first power input end 211 and the first power output end 212 to ensure stable transmission of the first drive shaft 21. The second drive shaft 22 is similarly supported, and will not be described further here.

[0038] In summary, the reducer of this utility model for electric dampers has two input ends and a first output end, so that one reducer can accommodate the installation of two sets of actuators, reducing the space occupied.

[0039] The above description is based on the preferred embodiments of this utility model. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A speed reducer for an electric damper, characterized in that, include: The first drive shaft (21) has a first power input end (211) and a first power output end (212) at its two ends. The second drive shaft (22) has a second power input end (221) and a second power output end (222) at its two ends, respectively. The first drive shaft (21) is provided with a first gear (23), and the second drive shaft (22) is provided with a second gear (24), and the first gear (23) meshes with the second gear (24); The power from the first power input end (211) is directly transmitted to the first power output end (212) and then outputs power, or the power from the second power input end (221) is transmitted to the first power input end (211) through the second gear (24) and the first gear (23) and then outputs power from the first power output end (212).

2. The reducer for an electric damper according to claim 1, characterized in that, The first gear (23) is mounted on the outside of the first input end, and the second gear (24) is mounted on the outside of the second output end.

3. The reducer for an electric damper according to claim 2, characterized in that, The first gear (23) and the second gear (24) are bevel gears.

4. The reducer for an electric damper according to any one of claims 1-3, characterized in that, The first power input end (211) of the first drive shaft (21) and the second power input end (221) of the second drive shaft (22) are respectively connected to the actuator (1). Both actuators (1) include a power output shaft (12). The two power output shafts (12) are directly connected to the first power input end (211) and the second power input end (221) respectively.

5. The reducer for an electric damper according to claim 4, characterized in that, The power output shaft (12) is directly connected to the first power input end (211) or the second power input end (221) via a key.

6. The reducer for an electric damper according to claim 5, characterized in that, The first power input end (211) or the second power input end (221) has a connecting hole, and the shaft head of the power output shaft (12) is directly inserted into the connecting hole.

7. The reducer for an electric damper according to claim 1, characterized in that, A first bearing (25) is connected to the first power input end (211), the first bearing (25) is located below the first gear (23), and a second bearing (26) is also connected to the first power output end (212).

8. The reducer for an electric damper according to claim 1, characterized in that, A third bearing (27) is connected to the second power input end (221), and a fourth bearing (28) is connected to the second power output end (222). The fourth bearing (28) is located behind the second gear (24).

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