CN117307708A - a gearbox - Google Patents

Abstract

The invention discloses a gear box, comprising: a case housing; a power input shaft and a power output shaft which are rotatably connected with the box body shell in a penetrating way; a gear set; the gear component is a plurality of relatively independent units with different transmission ratios, each unit comprises an input half shaft, an output half shaft, a braking gear and a braking component, the braking gears are coaxially and rotatably sleeved on the output half shafts, and the braking components are used for braking the braking gears of the corresponding units when the corresponding units become power output lines; the pair of planetary gears, the half-shaft gear I, the pair of planetary gears and the half-shaft gear II are meshed in sequence. Compared with the existing main flow gearbox, the gear of the output rotating speed can be switched without a clutch, the gear is not easy to damage, and the frustration of gear switching operation is reduced.

Description

a gearbox

Technical field

The present invention relates to the technical field of mechanical transmission, specifically a gear transmission.

Background technique

In mechanical transmission systems, gearboxes are the main device for transmitting power and are widely used in industrial sectors such as metallurgy, mining, hoisting and transportation, electric power, energy, building materials, light industry, and transportation, especially in transmission situations that require larger torque. .

There are many gear transmission patents in the prior art, such as the Chinese patent with authorization announcement number CN106979281A, which discloses a two-speed transmission with a dual clutch, including an electric motor, an intermediate shaft, a first clutch, and a gearbox. a second clutch, a first set of gears and a second set of gears. The electric motor includes a spindle. The first clutch and the second clutch are coaxially arranged on the intermediate shaft. The first set of gears is connected to the first clutch via a first shaft portion of the countershaft to generate a first transmission ratio. The second set of gears is connected to the second clutch via a second shaft portion of the countershaft to generate a second transmission ratio. The first transmission ratio is different from the second transmission ratio. When the first clutch is actuated and engaged with the first shaft portion, the second clutch is separated from the second shaft portion, and the electric motor outputs a first torque corresponding to the first transmission ratio through the first set of gears. When the second clutch is actuated and engaged with the second shaft portion, the first clutch is separated from the first shaft portion, and the electric motor outputs a second torque corresponding to the second transmission ratio through the second set of gears.

In any case, the existing technology requires multiple shifting operations of the gearbox in high-torque transmission situations, and the clutch needs to be driven to operate, which will inevitably lead to a certain degree of damage to the clutch, and a certain degree of frustration in the shifting operation. phenomenon (that is, a sense of frustration).

Contents of the invention

The object of the present invention is to provide a gear transmission that is less susceptible to damage and reduces frustration compared with existing mainstream transmissions.

The object of the present invention is achieved as follows: a gear transmission, including:

box shell;

The power input shaft and the power output shaft rotate through the box shell. One end of the power input shaft is connected to the rotary drive unit. The other end of the power input shaft is fixedly connected with a power input gear. The input end of the power output shaft The fixed set has a power take-off gear;

A gear set matching the power input gear and power output gear transmission;

The gear assembly is divided into several relatively independent units with different transmission ratios, and each unit includes:

Input half shaft, the input half shaft fixed set has an access gear and a half shaft gear one, the access gear meshes with the power input gear;

Output half-shaft, the axis of the output half-shaft coincides with the axis of the input half-shaft, the output half-shaft fixed sleeve has an output gear and two half-shaft gears, the output gear meshes with the power output gear;

Brake gear and brake assembly. The brake gear is coaxially rotatably sleeved with the output half shaft. The brake assembly is connected to the box shell and is used to brake the corresponding unit when it becomes a power output line. gears for braking;

A pair of planetary gears, each planetary gear is equipped with a gear seat, the planetary gear is rotatably connected to the gear seat, the gear seat is fixedly connected to the brake gear, the first side gear, a pair of planetary gears, and the second side gear Engage in turn.

Wherein, an intermediate transmission gear meshed with the braking gear and controlled by braking of the braking assembly is rotatably disposed in the box shell.

The brake assembly includes a brake wheel and a brake component. The brake wheel is coaxial with the intermediate transmission gear and is controlled by the brake component.

The beneficial effects of the present invention are:

1. If you need to select the corresponding gear to output torque, you only need to brake the brake gear of the gear set unit of the corresponding speed gear, so that the gear set unit of the corresponding speed gear forms a power output line, and the gear set The brake gears of other units have no braking, and other units of the gear set produce differential rotation, which does not affect the transmission of the power output line;

2. Compared with existing mainstream gearboxes, the output speed gear can be switched without a clutch, which is not easily damaged and reduces the frustration of gear switching operations.

Description of the drawings

Figure 1 is a schematic diagram of the internal structure of the present invention.

Figure 2 is a schematic diagram of the state without power output.

Figure 3 is a schematic diagram of the state of power output.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings 1-3 in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

As shown in Figure 1, a gear transmission includes:

Box shell 16;

The power input shaft 1 and the power output shaft 10 rotate through the box shell 16. One end of the power input shaft 1 is connected to the rotary drive unit. The other end of the power input shaft 1 is fixedly connected with the power input gear 2. The input of the power output shaft 10 The end fixed set has a power output gear 9;

A gear set that drives and cooperates with the power input gear 2 and the power output gear 9.

Among them, the gear set is divided into a number of relatively independent units with different transmission ratios, which correspond to the output speeds of different gears in turn. The number of units of the gear set can be set to two or more, and the specifics are not limited.

Each unit of the gear set includes:

The input half shaft 4 has a fixed set with an access gear 3 and a side gear 51, and the access gear 3 meshes with the power input gear 2;

Output half shaft 7, the axis of the output half shaft 7 coincides with the axis of the input half shaft 4, the output half shaft 7 fixed set has an output gear 8 and a side gear 2 52, the output gear 8 meshes with the power output gear 9;

Braking gear 12 and braking assembly, the braking gear 12 is coaxially rotatably sleeved with the output half shaft 7, the braking assembly is connected to the box shell 16, and is used to brake the corresponding unit when it becomes the power output line 18. The moving gear 12 performs braking;

A pair of planetary gears 6, each planetary gear 6 is equipped with a gear seat 11, the planetary gears 6 are rotatably connected to the gear seat 11, the gear seat 11 is fixedly connected to the brake gear 12, a half shaft gear 51, a pair of planetary gears 6, a half gear The second shaft gear 52 meshes in sequence, and the axes of the pair of planetary gears 6 coincide with each other and are located on two opposite sides of the periphery of the second side gear 52 .

Among them, the access gear 3 and/or the access gear 8 of each unit of the gear set have different diameters, and the sizes of the other gears can be kept consistent.

Without changing the core idea, any changes to the number of gears and the shape of the box shell 16 are within the scope of protection of the present invention.

An intermediate transmission gear 13 that meshes with the brake gear 12 is rotated inside the box shell 16. The brake assembly includes a brake wheel 14 and a brake component 15. The brake wheel 14 is coaxial with the intermediate transmission gear 13 and is supported by the brake component 15. brake control.

In order to ensure the speed of control, the above-mentioned brake component 15 is set as a disc brake controlled by an electronic control system (or other control methods, such as manual control, hydraulic control and other conventional control methods, which are not limited here). Disc brakes are modern For some conventional components, the electronic control system can be used to drive the brake member 15 to quickly brake the brake wheel 14, so that the brake wheel 14, intermediate transmission gear 13, and brake gear 12 can quickly stop rotating.

The above-mentioned brake component 15 can be other brake components, and is not limited to the disc brake proposed in this embodiment.

This embodiment takes the gear set as two units as an example to introduce the transmission conditions of the gear set under two working conditions: no power output and power output. In order to facilitate marking of the rotating and stationary states, the rotating parts are marked with arrows. Parts that do not move are marked ×.

As shown in Figure 2, for the state without power output, the transmission sequence of the two units of the gear set is as follows:

Power input gear 2 → Access gear 3 → Side gear one 51 → Planetary gear 6 → Brake gear 12 → Intermediate transmission gear 13 → Brake wheel 14, where planetary gear 6 revolves around the axis of side gear two 52 , the planet gear 6 also rotates and rolls on the second side gear 52.

The immovable parts include: half shaft gear 2 (52), output half shaft (7), output gear (8), power output gear (9), and power output shaft (10).

For the above transmission situation, the corresponding instructions are as follows:

When the brake wheel 14 is not braked, the rotation of the first side gear 51 drives the pair of planetary gears 6 to rotate around the axis of the second side gear 52, and then the pair of planetary gears 6 rotate around the axis of the second side gear 52. At the same time, the brake gear 12 is driven to rotate accordingly. Since the brake gear 12 and the output half shaft 7 are in a relatively rotating relationship, while the brake gear 12 rotates, the output half shaft 7 and the half shaft gear 52 are It can remain stationary, that is, the gear set is idling, and at this time, the power output shaft 10 is in a stationary state.

As shown in Figure 3, for the state with power output, the braking assembly of one unit of the gear set operates, and the braking member 15 of this unit brakes the braking wheel 14, so that the braking gear 12 and the intermediate transmission gear 13 are in an inseparable state. moving state.

This unit becomes the power output line 18, and the transmission sequence is as follows:

Power input shaft 1 → Power input gear 2 → Access gear 3 → Side gear one 51 → Planetary gear 6 → Side gear two 52 → Output half shaft 7 → Outgoing gear 8 → Power output gear 9 → Power output shaft 10 , wherein, the first side gear 51 drives the two planetary gears 6 to rotate, and the two planetary gears 6 do not rotate, so that the second side gear 52 and its output half shaft 7 rotate, so that the input half shaft 4 and the output half shaft 7 Coaxial synchronous rotation is generated, thereby transmitting the rotational power to the output half shaft 7, and driving the power output shaft 10 to output torque through the meshing of the take-out gear 8 and the power output gear 9.

The brake wheels 14 of other units of the gear set do not brake, but follow the rotation. The input half shaft 4 and the output half shaft 7 of this unit will rotate relative to each other through the revolution of the two planetary gears 6. Such relative rotational activity (just like a conventional differential) does not affect the transmission of the power output line 18 .

As a preferred structural solution, the above-mentioned brake component 15 is fixedly connected to the outer wall of the box shell 16 , the brake wheel 14 is located outside the box shell 16 , and the axis of the series brake wheel 14 and the intermediate transmission gear 13 rotates through the box shell 16 .

The above-mentioned brake component 15 and brake wheel 14 can also be located within the box shell 16, and there can be other installation location options. No matter how they are changed, they are all within the protection scope of the present invention.

As an optimized process structure solution (not limited to specifics), the brake member 15 and the brake wheel 14 can be assembled in a closed box, and the box can be fixedly connected to the box shell 16 .

In order to ensure the transmission effect and save installation space, the above-mentioned brake gear 12 and the intermediate transmission gear 13 are both bevel gears. They are not limited to the gear types listed in this embodiment, and the selection of any gear is within the protection scope of the present invention.

In order to better ensure that the input half shaft and the output half shaft 7 can rotate stably, the above-mentioned input half shaft 4 and the output half shaft 7 are equipped with rotating support seats 17, and the input half shaft 4 and the output half shaft 7 are rotatably connected. The supporting base 17 and the rotating supporting base 17 are fixedly connected to the inner wall of the box shell 16 .

This embodiment has the following advantages:

All gears are meshed at their installation positions, and gears of different speeds are transmitted through "alternating braking". The output torque range is increased. The structure is simple and the cost is low. The gear switching process can achieve seamless connection and high gear shifting speed. Please wait for technical requirements.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. The structure and operation of the present invention cannot be understood as limitations of the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or Integrated connection can also be a mechanical connection or an indirect connection through an intermediate connecting component. The specific meaning of the term in this application can be understood based on the specific situation.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and scope of equivalent elements are encompassed by the present invention, and any reference signs in a claim should not be construed as limiting the claim involved.

In addition, it should be understood that although this specification is described in terms of implementations, not each implementation only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. A gear box comprising:

a case housing (16);

a power input shaft (1) and a power output shaft (10) which are connected with a box shell (16) in a penetrating way in a rotating way, wherein one end of the power input shaft (1) is in transmission connection with a rotary driving unit, the other end of the power input shaft (1) is fixedly sleeved with a power input gear (2), and the input end of the power output shaft (10) is fixedly sleeved with a power output gear (9);

a gear set in transmission fit with the power input gear (2) and the power output gear (9);

the gear component is characterized by comprising a plurality of relatively independent units with different transmission ratios, and each unit comprises:

the input half shaft (4) is fixedly sleeved with an access gear (3) and a half shaft gear I (51), and the access gear (3) is meshed with the power input gear (2);

the output half shaft (7), the axis of the output half shaft (7) coincides with the axis of the input half shaft (4), the output half shaft (7) is fixedly sleeved with a receiving gear (8) and a half shaft gear II (52), and the receiving gear (8) is meshed with the power output gear (9);

a brake gear (12) and a brake assembly, wherein the brake gear (12) is coaxially and rotatably sleeved with the output half shaft (7), and the brake assembly is connected with the box shell (16) and is used for braking the brake gear (12) of the corresponding unit when the corresponding unit becomes a power output line (18);

the planetary gear (6) is provided with a gear seat (11), the planetary gears (6) are rotationally connected with the gear seat (11), the gear seat (11) is fixedly connected with a brake gear (12), and the first side gear (51), the pair of planetary gears (6) and the second side gear (52) are sequentially meshed.

2. A gear box according to claim 1, characterized in that: an intermediate transmission gear (13) which is meshed with the brake gear (12) and is controlled by the brake of the brake assembly is rotationally arranged on the box shell (16).

3. A gear box according to claim 2, characterized in that: the brake assembly comprises a brake wheel (14) and a brake piece (15), wherein the brake wheel (14) is coaxial with the intermediate transmission gear (13) and is controlled by the brake of the brake piece (15).

4. A gear box according to claim 3, characterized in that: the brake piece (15) is fixedly connected with the outer wall of the box shell (16), the brake wheel (14) is arranged outside the box shell (16), and the brake wheel (14) and the shaft of the intermediate transmission gear (13) are connected in series to rotate and penetrate through the box shell (16).

5. A gear box according to claim 2, characterized in that: the braking gear (12) and the intermediate transmission gear (13) are conical gears.

6. A gear box according to claim 1, characterized in that: the input half shaft (4) and the output half shaft (7) are respectively provided with a rotary supporting seat (17), the input half shaft (4) and the output half shaft (7) are rotationally connected with the rotary supporting seats (17) in a penetrating mode, and the rotary supporting seats (17) are fixedly connected with the inner wall of the box shell (16).

7. A gear box according to any of claims 1-6, characterized in that: the brake piece (15) is set to be a disc brake controlled by an electric control system.