An automatically resettable reduction gear box

Abstract

The utility model relates to the technical field of reduction gear box, concretely is a kind of reduction gear box of automatic reset, including box, the side of box is provided with finished motor, the shaft end of finished motor is inserted into the inside of box and is connected with motor output bevel gear, the inside rotation of box is provided with two direct-toothed shaft, three direct-toothed shaft, four direct-toothed shaft and output shaft, the surface of two direct-toothed shaft is fixedly sleeved with two bevel gears, and two bevel gears and motor output bevel gear are mutually engaged;The utility model realizes the automatic reset of output shaft by one-way ball bearing and spring, and three direct-toothed shaft idling during reset process without involving finished motor, since finished motor is not reversed during reset, it has higher reset efficiency, in addition, the meshing transmission effect of motor output bevel gear and two bevel gears can realize the 90 ° change of output direction, not easy to lead to layout limited, effectively improve applicability.

Description

Technical Field

[0001] This utility model relates to the field of reduction gearbox technology, and more specifically, to a reduction gearbox with automatic reset capability. Background Technology

[0002] A reduction gearbox is a mechanical device that converts speed and torque through a gear transmission mechanism. It is mainly used to connect a prime mover (such as an electric motor or internal combustion engine) to a working machine, and to meet the power requirements of mechanical equipment by reducing the output speed and increasing the torque.

[0003] Existing reduction gearboxes require motor reversal to reset the output shaft, resulting in low reset efficiency. In addition, the output direction of traditional gearboxes is the same as that of the motor, which may lead to layout limitations and low applicability. Utility Model Content

[0004] This invention provides an automatically resetting reduction gearbox, which solves the technical problem in the prior art that the output shaft needs to be reset by reversing the motor, and the output direction is the same as the motor direction.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows: An automatically resetting reduction gearbox includes a housing. A pre-fabricated motor is mounted on one side of the housing. The shaft end of the pre-fabricated motor extends into the housing and is connected to a motor output bevel gear. Inside the housing, a secondary spur gear shaft, a tertiary spur gear shaft, a quaternary spur gear shaft, and an output shaft are rotatably mounted. Two bevel gears are fixedly sleeved on the surface of the secondary spur gear shaft, and the two bevel gears mesh with the motor output bevel gear. A tertiary spur gear meshes with the secondary spur gear shaft on the surface of the tertiary spur gear shaft, and the tertiary spur gear shaft and the tertiary spur gear shaft are connected by a one-way ball bearing. A quaternary spur gear meshes with the tertiary spur gear shaft on the surface of the quaternary spur gear shaft. An output spur gear meshes with the quaternary spur gear shaft on the surface of the output shaft. A set of spring coils is also mounted on the output shaft, fixing and winding the spring coils around the periphery of the output shaft, with one end fixedly connected to the inner wall of the housing.

[0006] Furthermore, the reset of the output shaft is powered by the spring coil, and the three-stage spur gear shaft is in an idle state during the reset process.

[0007] Furthermore, the housing is composed of a gearbox cover and a gearbox base, with corresponding screw holes provided between the gearbox cover and the gearbox base.

[0008] Furthermore, the gearbox cover and the gearbox base are made of stainless steel.

[0009] Furthermore, a bracket is provided on the outer side of the gearbox base, and the bracket is provided with mounting holes.

[0010] Furthermore, the two bevel gears are made of plastic.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the output shaft is automatically reset by using a one-way ball bearing and a spring, and the three-stage spur gear shaft rotates freely during the reset process without affecting the finished motor. Since the finished motor does not need to reverse during reset, it has high reset efficiency. In addition, the output direction can be changed by 90° through the meshing transmission of the motor output bevel gear and the two bevel gears, which is less likely to cause layout restrictions and effectively improves applicability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the box in this utility model.

[0014] In the diagram: 1. Housing; 2. Gearbox cover; 3. Gearbox base; 4. Finished motor; 5. Motor output bevel gear; 6. Second-stage spur gear shaft; 7. Third-stage spur gear shaft; 8. Fourth-stage spur gear shaft; 9. Output shaft; 10. Second bevel gear; 11. Third-stage spur gear; 12. One-way ball bearing; 13. Fourth-stage spur gear; 14. Output spur gear; 15. Spring coil; 16. Bracket. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-2 An automatically resetting reduction gearbox includes a housing 1, which is composed of a gearbox cover 2 and a gearbox base 3. Corresponding screw holes are provided between the gearbox cover 2 and the gearbox base 3, which can be fixed together by screws, making it easy to disassemble the housing 1 for maintenance later. A finished motor 4 is provided on one side of the housing 1. The shaft end of the finished motor 4 extends into the interior of the housing 1 and is connected to the motor output bevel gear 5. Inside the housing 1, a secondary spur gear shaft 6, a tertiary spur gear shaft 7, a quaternary spur gear shaft 8 and an output shaft 9 are arranged in sequence. The secondary spur gear shaft 6 is close to the side of the motor output bevel gear 5, while the output shaft 9 is furthest from the motor output bevel gear 5, with one end extending out of the outside of the housing 1. The secondary spur gear shaft 6, the tertiary spur gear shaft 7, the quaternary spur gear shaft 8 and the output shaft 9 are all rotatably connected inside the housing 1 by ball bearings. The secondary spur shaft 6 has a two-bevel gear 10 fixedly sleeved on its surface, which meshes with the motor output bevel gear 5. The tertiary spur shaft 7 has a tertiary spur gear 11 nested on its surface, meshing with the secondary spur shaft 6. The tertiary spur gear 11 and the tertiary spur shaft 7 are connected by a one-way ball bearing 12 (the tertiary spur shaft 7 is connected to the inner ring of the one-way ball bearing 12, and the tertiary spur gear 11 is connected to the outer ring of the one-way ball bearing 12). The one-way ball bearing 12 can transmit torque in one direction only. The torque in the forward direction of the motor), when the force of the reverse direction is applied to it, it will enter the idling state. The surface of the fourth-stage spur shaft 8 is fixedly sleeved with a fourth-stage spur gear 13 that meshes with the third-stage spur shaft 7. The surface of the output shaft 9 is fixedly sleeved with an output spur gear 14 that meshes with the fourth-stage spur shaft 8. A set of spring coils 15 is also provided on the output shaft 9. The spring coils 15 are fixed and wound around the periphery of the output shaft 9. One end of the spring coils 15 is fixedly connected to the inner wall of the housing 1. The spring coils 15 can provide power for the reset of the output shaft 9. During operation, after starting the finished motor 4, it drives the output bevel gear 5 to rotate in the forward direction. When the output bevel gear 5 rotates, it drives the meshing second bevel gear 10 to rotate, which in turn causes the second-stage spur gear 6 to rotate under the drive of the second bevel gear 10. During this process, since the number of teeth of the second bevel gear 10 is greater than the number of teeth of the motor output bevel gear 5, first-stage reduction is achieved. Simultaneously, because the orientations of the motor output bevel gear 5 and the second bevel gear 10 are different, the direction of power transmission is also changed (90°). When the second-stage spur gear 6 rotates, it drives the meshing third-stage spur gear 11 to rotate. At this time, the inner and outer rings of the one-way ball bearing 12 are locked together, ensuring that the power of the third-stage spur gear 11 is firmly transmitted to the third-stage spur gear 7, thus driving the third-stage spur gear 7 to rotate. In this process, the second-stage spur gear 6, with fewer teeth, acts as the driving wheel, driving the third-stage spur gear 11, with more teeth, to rotate, thus achieving second-stage reduction. During the rotation of the third-stage spur gear 7, it drives the fourth-stage spur gear 13 to rotate, further... The fourth-stage spur gear 8 rotates under the drive of the fourth-stage spur gear 13. During this process, the third-stage spur gear 7, with fewer teeth, acts as the driving wheel to drive the fourth-stage spur gear 13, which has more teeth, thus achieving three-stage reduction. When the fourth-stage spur gear 8 rotates, it drives the output spur gear 14, which meshes with it, to rotate. Finally, the output shaft 9 rotates under the drive of the output spur gear 14. During this process, since the fourth-stage spur gear 8, with fewer teeth, acts as the driving wheel to drive the output spur gear 14, which has more teeth, four-stage reduction is achieved. Therefore, when the finished motor 4 drives the motor output bevel gear 5 to rotate, the speed can be reduced step by step through the above-mentioned four-stage reduction effect, and the torque can be amplified step by step. Finally, the output shaft 9, which extends out of the housing 1, can rotate at a speed much lower than that of the motor output bevel gear 5. In the transmission process, the first stage uses the motor output bevel gear 5 and the third-stage spur gear 7 facing different directions to achieve the steering function. The latter three stages adopt parallel transmission, which effectively changes the direction of transmission with a compact structure. During the above operation, when the output shaft 9 rotates, it stretches the spring coil 15 on it, allowing the spring coil 15 to accumulate potential energy. When the finished product motor 4 stops supplying power and the motor output bevel gear 5 stops rotating, since the output shaft 9 is no longer driven, the energy-accumulated spring coil 15 needs to return to its original state. Its released elastic potential energy becomes a new power source. This elastic force will drive the output shaft 9 in the opposite direction, causing it to rotate back to its initial position and reset. During the rotation of the output shaft 9, the reverse power will be transmitted to the third-stage spur gear 7 through the meshing of the gear set inside the housing 1, thereby driving the third-stage spur gear 7 to rotate in the opposite direction. At this time, the one-way ball bearing 12 cannot transmit the power of the third-stage spur gear 7 to the third-stage spur gear 11, so that the third-stage spur gear 7 can only rotate in the opposite direction and will not drive the second bevel gear 10, the second-stage spur gear 6 and the motor output bevel gear 5 to rotate. This makes the reset action only occur on the output shaft 9 and will not involve the finished product motor 4 at all. Therefore, the automatic reset effect of the output shaft 9 is achieved.

[0018] Furthermore, the second bevel gear 10 is made of plastic, which can reduce noise during transmission and reduce the overall weight of the gearbox.

[0019] Furthermore, the gearbox cover 2 and gearbox seat 3 are made of stainless steel, which has high strength, is not easily deformed, is not easily corroded, and has a long service life.

[0020] For further details, please refer to Figure 1 A bracket 16 is provided on the outer side of the gearbox base 3. The bracket 16 is provided with mounting holes. The bracket 16 can support the entire reduction gearbox and fix it in the required position.

[0021] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A resetting reduction gearbox, comprising a housing (1), characterized in that, A finished motor (4) is provided on one side of the housing (1). The shaft end of the finished motor (4) extends into the interior of the housing (1) and is connected to a motor output bevel gear (5). A second-stage spur gear shaft (6), a third-stage spur gear shaft (7), a fourth-stage spur gear shaft (8), and an output shaft (9) are rotatably arranged inside the housing (1). A second-stage spur gear (10) is fixedly sleeved on the surface of the second-stage spur gear shaft (6). The second-stage spur gear (10) meshes with the motor output bevel gear (5). A third-stage spur gear that meshes with the second-stage spur gear shaft (6) is nested on the surface of the third-stage spur gear shaft (7). (11) The third-stage spur gear (11) and the third-stage spur shaft (7) are connected together by a one-way ball bearing (12). The surface of the fourth-stage spur shaft (8) is fixedly sleeved with a fourth-stage spur gear (13) that meshes with the third-stage spur shaft (7). The surface of the output shaft (9) is fixedly sleeved with an output spur gear (14) that meshes with the fourth-stage spur shaft (8). A set of spring coils (15) are also provided on the output shaft (9). The spring coils (15) are fixed and wound around the periphery of the output shaft (9), and one end of them is fixedly connected to the inner wall of the housing (1).

2. The automatically resettable reduction gearbox according to claim 1, characterized in that, The reset of the output shaft (9) is powered by the spring coil (15), and the three-stage spur gear shaft (7) is in an idle state during the reset process.

3. The automatically resettable reduction gearbox according to claim 1, characterized in that, The housing (1) is composed of a gearbox cover (2) and a gearbox seat (3) joined together, with corresponding screw holes provided between the gearbox cover (2) and the gearbox seat (3).

4. The automatically resettable reduction gearbox according to claim 3, characterized in that, The gearbox cover (2) and the gearbox seat (3) are made of stainless steel.

5. The automatically resettable reduction gearbox according to claim 3 or 4, characterized in that, A bracket (16) is provided on the outer side of the gearbox seat (3), and the bracket (16) is provided with mounting holes.

6. The automatically resettable reduction gearbox according to claim 1, characterized in that, The two bevel gears (10) are made of plastic.

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