CN220956739U - Driving wheel structure and speed reducer - Google Patents

Abstract

The utility model belongs to the technical field of speed reducers, and discloses a driving wheel structure and a speed reducer. The driving wheel structure comprises an internal tooth ratchet wheel, a driving shaft, a fluted disc wheel and a pawl, wherein gear teeth are arranged on the periphery of the internal tooth ratchet wheel; the transmission shaft is used for transmitting torque; the gear disc wheel and the internal tooth ratchet wheel are coaxially arranged on the internal tooth ratchet wheel, the gear disc wheel is in running fit with the internal tooth ratchet wheel, and the gear disc wheel penetrates through the transmission shaft; the pawl is movably arranged on the gear plate wheel, and the end part of the pawl can be blocked on the ratchet teeth of the inner-tooth ratchet wheel in a one-way. The driving wheel structure is convenient to operate and simple in structure, and different output effects of the driving wheel structure can be caused by selectively driving the teeth of the internal tooth ratchet wheel and the transmission shaft in the same direction respectively, so that different output configurations of the driving wheel structure are realized.

Description

Driving wheel structure and speed reducer

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a driving wheel structure and a speed reducer.

Background

When a nuclear power plant cools a reactor by using seawater, the seawater needs to be cooled by a drum filter before the nuclear power plant is cooled, so that usable cooling water is formed. The drum type filter screen is connected and driven by a motor through a speed reducer so as to drive a main shaft of the drum type filter screen to rotate, thereby filtering seawater, and in the filtering process, the drum type filter screen needs to be operated at variable speed according to the current water level so as to ensure the supply of cooling water of the nuclear power station.

The motor speed reducer commonly used in the nuclear power station at present comprises a three-input synchronous shaft structure speed reducer and a three-input clutch structure speed reducer, wherein the three-input synchronous shaft structure speed reducer is easy to cause overhigh temperature of the speed reducer when in use due to the consistent internal gear ratio corresponding to the input shafts of a high-speed motor and a low-speed motor, so that the speed reducer is damaged; and the three-input clutch structure speed reducer adopts an overrunning clutch, has a complex structure and brings great inconvenience to overhaul.

Disclosure of utility model

The utility model aims to provide a driving wheel structure and a speed reducer, which can realize the output of different speeds and are simple in structure and convenient to adjust.

To achieve the purpose, the utility model adopts the following technical scheme:

The drive wheel structure includes:

an internal tooth ratchet wheel, wherein gear teeth are arranged on the periphery of the internal tooth ratchet wheel;

A drive shaft for transmitting torque;

The fluted disc wheel and the internal tooth ratchet wheel are coaxially arranged on the internal tooth ratchet wheel, the fluted disc wheel is in running fit with the internal tooth ratchet wheel, and the fluted disc wheel is arranged on the transmission shaft in a penetrating way;

The pawl is movably arranged on the gear plate wheel, and the end part of the pawl can be blocked on the ratchet teeth of the internal tooth ratchet wheel in a one-way.

Preferably, the driving wheel structure further comprises an elastic piece, wherein the elastic piece is arranged on the gear disc wheel and is used for applying a force to the pawl so that the end part of the pawl always has a tendency of being blocked on the ratchet teeth of the internal tooth ratchet wheel in a one-way.

Preferably, the internal tooth ratchet wheel is provided with an annular mounting notch, the fluted disc wheel comprises a shaft sleeve part and a mounting part which are connected, the shaft sleeve part is arranged on the transmission shaft in a penetrating manner and is connected with the transmission shaft in a key manner, the pawl is arranged on the mounting part in a rotating manner, and the mounting part is embedded in the annular mounting notch.

Preferably, an assembling convex part is arranged on the inner peripheral surface of the internal tooth ratchet wheel, a first assembling groove is concavely formed between the shaft sleeve part and the mounting part, and the assembling convex part is embedded in the first assembling groove and is in sliding fit with the first assembling groove.

Preferably, the transmission wheel structure further includes a bushing provided on the fitting boss, the boss being in sliding contact with the bushing.

Preferably, a baffle is clamped on the gear disc wheel, and the baffle axially abuts against the end of the bushing.

Preferably, the shaft sleeve part is provided with a first oil way, the internal tooth ratchet wheel is provided with a second oil way, the bushing is provided with a third oil way, the first oil way, the second oil way and the third oil way form an oiling channel, and the oiling channel is used for injecting lubricating oil into the bushing.

Preferably, the mounting portion includes a first vertical plate, a bottom plate and a second vertical plate that are connected, the bottom plate is connected with the shaft sleeve portion, the first vertical plate, the bottom plate and the second vertical plate enclose to form a second assembly groove, and the pawl is disposed in the second assembly groove.

Preferably, a plurality of pins are uniformly arranged on the gear disc wheel in the circumferential direction, the pawls and the pins are correspondingly arranged on the pins in a penetrating manner, and the pawls can be in running fit with the pins.

Speed reducer, including above-mentioned drive wheel structure, still include:

a first motor;

A first drive gear keyed to an output shaft of the first motor, the first drive gear being capable of driving the first drive gear to rotate, the first drive gear being meshed with the internal tooth ratchet by teeth on an outer periphery of the internal tooth ratchet;

The pinion is connected with the transmission shaft through a key;

a second motor, the rotation speed of the output shaft of which is higher than that of the output shaft of the first motor;

a second drive gear keyed to an output shaft of the second motor, the second drive gear capable of driving the second drive gear to rotate;

a main output shaft for outputting torque;

And the main gear is connected with the main output shaft in a key way and is respectively meshed with the auxiliary gear and the second driving gear.

The utility model has the beneficial effects that:

According to the driving wheel structure, the gear plate wheel and the internal tooth ratchet wheel are coaxially arranged and are in running fit, as the pawl is rotationally arranged on the gear plate wheel, the end part of the pawl can be unidirectionally clamped against the ratchet teeth of the internal tooth ratchet wheel, and the gear teeth are arranged on the periphery of the internal tooth ratchet wheel, when the internal tooth ratchet wheel is driven to rotate through the gear teeth on the periphery, the gear plate wheel can be driven to rotate in the same direction through the pawl, and torque is output through the transmission shaft penetrating through the gear plate wheel; because the pawl is blocked on the ratchet teeth of the internal tooth ratchet wheel in one way, when the tooth disc wheel is driven to rotate along the same direction through the transmission shaft, the pawl can be separated from the ratchet teeth of the internal tooth ratchet wheel and can not drive the internal tooth ratchet wheel to rotate, so that the idle rotation of the tooth disc wheel is realized; the driving wheel structure is simple in structure and convenient to operate, and different output effects of the driving wheel structure can be caused by selectively driving the teeth of the internal tooth ratchet wheel and the transmission shaft in the same direction respectively, so that different output configurations of the driving wheel structure are realized.

The speed reducer provided by the utility model adopts the driving wheel structure, and can realize two different rotation speed outputs, so that the output rotation speed can be adjusted according to the actual working condition, the structure is simple, the operation is convenient, and the use safety is improved.

Drawings

FIG. 1 is a front view of a drive wheel configuration provided in an embodiment of the present utility model;

FIG. 2 is a side cross-sectional view of a drive wheel configuration provided in accordance with an embodiment of the present utility model;

Fig. 3 is a schematic structural diagram of a speed reducer according to an embodiment of the present utility model.

In the figure:

1-an internal tooth ratchet; 11-fitting the convex portion; 12-an annular mounting gap;

2-a gear wheel; 21-a boss; 22-mounting part; 221-a first riser; 222-a bottom plate; 223-a second riser; 224-a second fitting groove; 23-a first fitting groove; 24-baffle; 25-pin shafts;

3-pawl;

4-elastic members;

5-lining;

6-a first motor; 61-a first drive gear;

7-a pinion;

8-a second motor; 81-a second drive gear;

9-a transmission shaft;

100-a main output shaft;

110-main gear.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 and 2, the present utility model provides a driving wheel structure including an internal tooth ratchet 1, a driving shaft 9, a gear plate wheel 2 and a pawl 3, the external circumference of the internal tooth ratchet 1 being provided with gear teeth; the transmission shaft 9 is used for transmitting torque; the gear wheel 2 and the internal tooth ratchet wheel 1 are coaxially arranged on the internal tooth ratchet wheel 1, the gear wheel 2 is in running fit with the internal tooth ratchet wheel 1, and the gear wheel 2 is arranged on the transmission shaft 9 in a penetrating way; the pawl 3, the pawl 3 activity sets up on the gear wheel 2, and the tip of pawl 3 can one-way card be supported on the ratchet of inner tooth ratchet 1. In this embodiment, a partial sectional process is performed in fig. 1 in order to facilitate the view of the structure of the pawl 3. The gear wheel 2 and the internal tooth ratchet wheel 1 are coaxially arranged and are in running fit, and as the pawl 3 is rotationally arranged on the gear wheel 2, the end part of the pawl 3 can be blocked on the ratchet teeth of the internal tooth ratchet wheel 1 in a one-way manner, and the gear teeth are arranged on the periphery of the internal tooth ratchet wheel 1, when the internal tooth ratchet wheel 1 is driven to rotate through the gear teeth on the periphery, the gear wheel 2 can be driven to rotate in the same direction through the pawl 3, and torque is output through the transmission shaft 9 penetrating through the gear wheel 2; specifically, the outer periphery of the internal tooth ratchet 1 is provided with gear teeth which are the same as those of spur gears common in the art and are used for external engagement with other gears; the inner circumference of the internal tooth ratchet 1 is provided with ratchet teeth common in the art for being engaged with the pawls 3. Because the pawl 3 is clamped on the ratchet teeth of the internal tooth ratchet wheel 1 in a one-way, when the gear wheel 2 is driven to rotate in the same direction through the transmission shaft 9, the pawl 3 can be separated from the ratchet teeth of the internal tooth ratchet wheel 1 and can not drive the internal tooth ratchet wheel 1 to rotate, so that the idle rotation of the gear wheel 2 is realized; the driving wheel structure is simple in structure and convenient to operate, and different output effects of the driving wheel structure can be caused by selectively driving the teeth of the internal tooth ratchet wheel 1 and the transmission shaft 9 in the same direction, so that different output configurations of the driving wheel structure are realized.

Further, as shown in fig. 1 and 2, the driving wheel structure further includes an elastic member 4, where the elastic member 4 is disposed on the toothed disc wheel 2, and the elastic member 4 is configured to apply a force to the pawl 3, so that the end of the pawl 3 always has a tendency to unidirectionally block against the ratchet teeth of the inner toothed ratchet wheel 1. In the present embodiment, the pawl 3 and the internal tooth ratchet 1 are a common unidirectional intermittent motion mechanism in the field; the elastic piece 4 is a compression spring, one end of the elastic piece 4 is fixed on the gear plate wheel 2, the other end of the elastic piece 4 is abutted against the pawl 3 along the extension direction and applies elastic force to the pawl 3, so that the pawl 3 can be abutted against the ratchet teeth of the internal tooth ratchet wheel 1 all the time, and the pawl 3 and the internal tooth ratchet wheel 1 can be mutually and effectively driven to rotate; specifically, when the transmission shaft 9 rotates forward (the anticlockwise direction of the view angle of fig. 1 is taken as the forward direction), the toothed disc wheel 2 rotates forward under the drive of the transmission shaft 9, the pawl 3 on the toothed disc wheel 2 is extruded by the ratchet teeth of the internal tooth ratchet wheel 1 to generate friction force, but the friction force is far smaller than the driving force of forward rotation, and the pawl 3 is not blocked against the ratchet teeth, so when the transmission shaft 9 drives the toothed disc wheel 2 to rotate forward, the toothed disc wheel 2 does not drive the internal tooth ratchet wheel 1 to rotate, namely the toothed disc wheel 2 idles; when the internal tooth ratchet 1 is driven to rotate forward through the teeth of the cogs, the pawl 3 will be caught against the ratchet teeth, so that the internal tooth ratchet 1 rotates forward while the dial wheel 2 is driven to rotate forward synchronously through the pawl 3.

The internal tooth ratchet wheel 1 is provided with an annular mounting notch 12, the fluted disc wheel 2 comprises a shaft sleeve part 21 and a mounting part 22 which are connected, the shaft sleeve part 21 is arranged on the transmission shaft 9 in a penetrating way and is connected with the transmission shaft 9 in a key way, the pawl 3 is arranged on the mounting part 22 in a rotating way, and the mounting part 22 is embedded in the annular mounting notch 12. In this embodiment, the shaft sleeve portion 21 and the mounting portion 22 are all disposed in a circle, the shaft sleeve portion 21 is connected with the mounting portion 22, the shaft sleeve portion 21 is connected with the transmission shaft 9 in a key manner, and the pawl 3 is disposed on the mounting portion 22, and since the annular mounting notch 12 is disposed on the internal tooth ratchet 1, the mounting portion 22 is embedded in the annular mounting notch 12, and space is saved.

Specifically, as shown in fig. 2, an fitting convex portion 11 is provided on the inner peripheral surface of the internal tooth ratchet 1, a first fitting groove 23 is concavely formed between the boss portion 21 and the mounting portion 22, and the fitting convex portion 11 is fitted in the first fitting groove 23 and slidably fitted with the first fitting groove 23. In this embodiment, the assembling protrusion 11 is annular and is disposed on the inner tooth ratchet 1 for a circle, the assembling protrusion 11 is embedded in the first assembling groove 23, so that the matching relationship between the inner tooth ratchet 1 and the tooth disc wheel 2 is further enhanced, and meanwhile, when the tooth disc wheel 2 and the inner tooth ratchet 1 are assembled, the assembling protrusion 11 is only required to be aligned with the first assembling groove 23 and inserted into the first assembling groove, so that the assembling difficulty of the two is reduced.

Specifically, as shown in fig. 2, the transmission wheel structure further includes a bushing 5, the bushing 5 being provided on the fitting boss 11, and the boss 21 being in sliding contact with the bushing 5. In this embodiment, the bushing 5 has an annular structure, the bushing 5 is sleeved on the inner wall of the annular assembly convex part 11 and is connected with the assembly convex part 11 in a key manner, and the assembly convex part 11 can drive the bushing 5 to rotate synchronously; the inner wall of the bushing 5 is abutted against the boss 21, and the boss 21 can rotate relative to the bushing 5; the bushing 5 is provided between the fitting boss 11 and the boss 21, so that abrasion between the boss 21 and the fitting boss 11 can be reduced, and at the same time, a sealing effect can be provided to prevent external dust or particles from entering the inside of the transmission wheel structure.

Specifically, as shown in fig. 2, the fluted disc wheel 2 is provided with a baffle 24, and the baffle 24 abuts against the end of the bushing 5 in the axial direction. In this embodiment, the boss 21 of the gear wheel 2 is radially provided with a groove, and the baffle 24 is inserted into the groove to be fixed to the gear wheel 2, and the baffle 24 abuts against the end of the bush 5 in the axial direction to prevent the bush 5 from coming out of the fitting boss 11.

Specifically, the shaft sleeve portion 21 is provided with a first oil path, the internal tooth ratchet wheel 1 is provided with a second oil path, the bushing 5 is provided with a third oil path, and the first oil path, the second oil path and the third oil path form an oiling channel which is used for injecting lubricating oil into the bushing 5. In this embodiment, a plurality of first oil paths are uniformly provided on the shaft sleeve portion 21, a plurality of second oil paths are uniformly provided on the internal tooth ratchet 1, a plurality of third oil paths are uniformly provided on the bushing 5, and the first oil paths, the second oil paths and the third oil paths are used for circulating lubricating oil, so as to lubricate the bushing 5, further reduce friction between the bushing 5 and the shaft sleeve portion 21, and enable the bushing 5 and the shaft sleeve portion 21 to rotate relatively better.

Specifically, as shown in fig. 2, the mounting portion 22 includes a first standing plate 221, a bottom plate 222, and a second standing plate 223 that are connected, the bottom plate 222 is connected to the boss portion 21, the first standing plate 221, the bottom plate 222, and the second standing plate 223 are surrounded to form a second fitting groove 224, and the pawl 3 is disposed in the second fitting groove 224. In this embodiment, the mounting portion 22 is a U-shaped structure formed by a first vertical plate 221, a bottom plate 222 and a second vertical plate 223 that are connected, where the first vertical plate 221, the bottom plate 222 and the second vertical plate 223 enclose a second assembly groove 224, and the pawl 3 is installed in the second assembly groove 224, so that the pawl 3 can be well protected, and the pawl 3 is prevented from being interfered by external foreign matters in the use process to affect the normal operation.

Further, as shown in fig. 1 and 2, a plurality of pins 25 are uniformly arranged on the fluted disc wheel 2 in the circumferential direction, the pawls 3 are correspondingly arranged on the pins 25 in a penetrating manner, and the pawls 3 can be in running fit with the pins 25. Specifically, the pin shaft 25 is arranged on the first vertical plate 221 and the second vertical plate 223 on two sides of the second assembly groove 224 in a penetrating way, the pawl 3 is arranged on the pin shaft 25 in a penetrating way and can rotate around the pin shaft 25, and the structure is simple and convenient to maintain and replace.

As shown in fig. 3, the present utility model further provides a speed reducer, which includes the above-mentioned driving wheel structure, and further includes a first motor 6, a first driving gear 61, a pinion 7, a second motor 8, a second driving gear 81, a main output shaft 100, and a main gear 110; the first driving gear 61 is in key connection with an output shaft of the first motor 6, the first motor 6 can drive the first driving gear 61 to rotate, and the first driving gear 61 is meshed with the internal tooth ratchet 1 through gear teeth on the periphery of the internal tooth ratchet 1; the pinion 7 is connected with the transmission shaft 9 in a key way; the rotation speed of the output shaft of the second motor 8 is higher than that of the output shaft of the first motor 6; the second driving gear 81 is in key connection with an output shaft of the second motor 8, and the second motor 8 can drive the second driving gear 81 to rotate; the main output shaft 100 is for outputting torque, the main gear 110 is keyed to the main output shaft 100, and the main gear 110 is meshed with the pinion 7 and the second drive gear 81, respectively. Specifically, the first motor 6 is a low-speed motor, the second motor 8 is a high-speed motor, the first driving gear 61 and the second driving gear 81 are respectively arranged on the output shaft of the first motor 6 and the output shaft of the second motor 8, the transmission shaft 9 of the transmission wheel structure is also connected with the auxiliary gear 7 in a key way, the auxiliary gear 7 is externally meshed with the main gear 110 arranged on the main output shaft 100, and the main gear 110 is externally meshed with the second driving gear 81; because the speed reducer is provided with two motors with different rotating speeds, two different rotating speed outputs can be realized, the speed reducer is simple in structure and high in practicability, and the rotating speed output requirements of different water levels can be fully met.

The specific working process of the speed reducer is as follows: when the water level of the seawater is higher, an operator starts the second motor 8, the output shaft of the second motor 8 drives the second driving gear 81 to rotate, and as the second driving gear 81 is meshed with the main gear 110, the main gear 110 is driven by the second driving gear 81 to rotate, so that the main output shaft 100 is driven to rotate, and the main output shaft 100 is connected with the filter screen main shaft, so that the filter screen main shaft is driven to perform filtering operation at the rotating speed a; it will be appreciated that since the main gear 110 is also meshed with the auxiliary gear 7, the auxiliary gear 7 is driven to rotate, and the transmission shaft 9 is driven by the auxiliary gear 7 to rotate in the forward direction (in the counterclockwise direction from the view of fig. 1), at this time, the pawl 3 is not blocked against the ratchet teeth of the internal tooth ratchet wheel 1, so that the gear wheel 2 does not drive the internal tooth ratchet wheel 1 to rotate, that is, the gear wheel 2 idles, and the rotation is not further transmitted to the first driving gear 61, so that the first motor 6 is disconnected and the first motor 6 is not damaged; when the water level of the seawater is low, an operator turns off the second motor 8 and starts the first motor 6, an output shaft of the first motor 6 drives the first driving gear 61 to rotate, the internal tooth ratchet wheel 1 can rotate positively under the driving of the first driving gear 61 due to the external engagement of the first driving gear 61 and the internal tooth ratchet wheel 1 of the transmission wheel structure, at the moment, the pawl 3 is clamped on a ratchet, so that the gear wheel 2 can be driven to rotate positively, the auxiliary gear 7 on the transmission shaft 9 is further driven to rotate, and the main gear 110 is meshed with the main gear 110 and is arranged on the main output shaft 100, so that the main gear 110 can drive the main output shaft 100 to rotate, the main output shaft 100 is connected with a filter screen main shaft, and finally the filter screen main shaft is driven to perform filtering operation at a rotating speed b, and the rotating speed b is smaller than the rotating speed a, and the two rotating speeds are respectively output rotating speeds designed under different working conditions; it will be appreciated that since the main gear 110 is also meshed with the second driving gear 81, the second driving gear 81 is transmitted to the second motor 8 through the output shaft of the second motor 8, and since the first motor 6 is a low-speed motor and the second motor 8 is a high-speed motor, the rotation speed transmitted to the second motor 8 through the output shaft of the second motor 8 does not damage the second motor 8, and at the same time, the second motor 8 can be driven to perform the power generation operation.

In the present embodiment, the outer diameters of the pinion 7 and the second driving gear 81 are far smaller than the outer diameter of the main gear 110, and the number of teeth of the main gear 110 is also larger than that of the pinion 7 and the second driving gear 81, so that a reduction gear structure can be formed when the pinion 7 and the second driving gear 81 mesh with the main gear 110, and thus, the reduction of the rotation speed is achieved, that is, the rotation speed a is smaller than the rotation speed of the output shaft of the second motor 8, and the rotation speed b is smaller than the rotation speed of the output shaft of the first motor 6.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The drive wheel structure, its characterized in that includes:

An internal tooth ratchet wheel (1), wherein gear teeth are arranged on the periphery of the internal tooth ratchet wheel (1);

-a drive shaft (9), the drive shaft (9) being for transmitting torque;

The fluted disc wheel (2) and the internal tooth ratchet wheel (1) are coaxially arranged on the internal tooth ratchet wheel (1), the fluted disc wheel (2) is in running fit with the internal tooth ratchet wheel (1), and the fluted disc wheel (2) is arranged on the transmission shaft (9) in a penetrating way;

The pawl (3) is movably arranged on the fluted disc wheel (2), and the end part of the pawl (3) can be blocked on the ratchet teeth of the internal tooth ratchet wheel (1) in a one-way.

2. The driving wheel structure according to claim 1, characterized in that it further comprises an elastic member (4), said elastic member (4) being provided on said toothed disc wheel (2), said elastic member (4) being adapted to apply a force to said pawl (3) such that the end of said pawl (3) always has a tendency to be unidirectionally clamped against the ratchet teeth of said internal tooth ratchet wheel (1).

3. The driving wheel structure according to claim 1, characterized in that an annular mounting notch (12) is formed in the internal tooth ratchet wheel (1), the fluted disc wheel (2) comprises a shaft sleeve part (21) and a mounting part (22) which are connected, the shaft sleeve part (21) is arranged on the driving shaft (9) in a penetrating manner and is connected with the driving shaft (9) in a key manner, the pawl (3) is rotatably arranged on the mounting part (22), and the mounting part (22) is embedded in the annular mounting notch (12).

4. A transmission wheel structure according to claim 3, characterized in that an assembling convex part (11) is provided on the inner peripheral surface of the internal tooth ratchet wheel (1), a first assembling groove (23) is concavely formed between the shaft sleeve part (21) and the mounting part (22), and the assembling convex part (11) is embedded in the first assembling groove (23) and is in sliding fit with the first assembling groove (23).

5. A transmission wheel arrangement according to claim 4, characterized in that the transmission wheel arrangement further comprises a bushing (5), the bushing (5) being arranged on the fitting boss (11), the bushing portion (21) being in sliding contact with the bushing (5).

6. The transmission wheel structure according to claim 5, characterized in that a baffle (24) is clamped on the fluted disc wheel (2), and the baffle (24) is abutted against the end of the bushing (5) along the axial direction.

7. The driving wheel structure according to claim 5, wherein the shaft sleeve portion (21) is provided with a first oil path, the internal tooth ratchet wheel (1) is provided with a second oil path, the bushing (5) is provided with a third oil path, the first oil path, the second oil path and the third oil path form an oiling channel, and the oiling channel is used for injecting lubricating oil into the bushing (5).

8. A transmission wheel structure according to claim 3, wherein the mounting portion (22) comprises a first vertical plate (221), a bottom plate (222) and a second vertical plate (223) which are connected, the bottom plate (222) is connected with the shaft sleeve portion (21), the first vertical plate (221), the bottom plate (222) and the second vertical plate (223) are surrounded to form a second assembly groove (224), and the pawl (3) is arranged in the second assembly groove (224).

9. The driving wheel structure according to claim 1, wherein a plurality of pins (25) are uniformly arranged on the fluted disc wheel (2) in the circumferential direction, the pawl (3) and the plurality of pins (25) are correspondingly arranged on the pins (25) in a penetrating manner, and the pawl (3) can be in running fit with the pins (25).

10. A speed reducer comprising a transmission wheel structure according to any one of claims 1 to 7, further comprising:

A first motor (6);

A first drive gear (61), wherein the first drive gear (61) is in key connection with an output shaft of the first motor (6), the first motor (6) can drive the first drive gear (61) to rotate, and the first drive gear (61) is meshed with the internal tooth ratchet (1) through gear teeth on the periphery of the internal tooth ratchet (1);

a pinion (7), the pinion (7) being keyed to the drive shaft (9);

A second motor (8), the rotation speed of the output shaft of the second motor (8) is higher than that of the output shaft of the first motor (6);

The second driving gear (81), the second driving gear (81) is connected with the output shaft of the second motor (8) in a key way, and the second motor (8) can drive the second driving gear (81) to rotate;

-a main output shaft (100), the main output shaft (100) for outputting torque;

And a main gear (110), wherein the main gear (110) is connected with the main output shaft (100) in a key way, and the main gear (110) is respectively meshed with the auxiliary gear (7) and the second driving gear (81).