Speed reducer with braking function

Abstract

The utility model discloses a speed reducer with a braking function, and relates to the technical field of speed reducers, the speed reducer comprises a first box body, an input shaft transmission assembly and an output shaft transmission assembly, the first box body comprises a left box body and a right box body, and an accommodating space is formed in the left box body and the right box body; the input shaft transmission assembly comprises a gear transmission component and a brake component. The gear transmission part comprises an input gear shaft, an intermediate gear and a sun gear shaft mounted at the inner top of the first box body, one end of the sun gear shaft is connected with the brake part, and the other end extends out of the side wall of the right box body; the output shaft transmission assembly comprises a gear ring part connected to the side wall of the right box body and a planet wheel part located in the gear ring part, the extending end of the sun wheel shaft is in meshing transmission connection with the planet wheel part, and an outer ring of the planet wheel part is in meshing transmission with an inner ring of the gear ring part. The device is externally connected with a brake component, so that the device can stop running immediately when a machine is out of control or a motor breaks down, and the safety of a system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to planetary reducer technical field, concretely relates to a speed reducer with brake function. BACKGROUND

[0002] With the continuous development of industry, now AGV trolley satisfies the bearing capacity, also requires AGV trolley smaller and smaller, and the size of speed reducer is required shorter and shorter, and can stop immediately when mechanical out of control or motor failure, ensure the safety of system.

[0003] The planetary reducer for AGV trolley generally adopts concentric planetary reduction box, wherein the center of motor and wheel hub, brake shaft is on the same axis, and the inside of wheel hub needs to be separately supported, which leads to the longer axial dimension.

[0004] In addition, AGV trolley generally adopts power double drive structure, which requires the width of AGV trolley to be at least greater than the total width of two motors, two speed reducers and two wheels, which makes the total width too large and cannot meet the actual space layout requirement well. UTILITY MODEL CONTENTS

[0005] Therefore, in order to solve the defects of the above-mentioned technology, the utility model provides a speed reducer with brake function, comprising:

[0006] The first box body comprises a left box body and a right box body fixedly connected by a first connecting piece, so that the inside of the left box body and the right box body forms a containing space;

[0007] The input shaft transmission assembly comprises a gear transmission part installed in the containing space and a brake part connected to the outside of the left box body;

[0008] The gear transmission part comprises an input gear shaft installed at the bottom of the first box body, an intermediate gear installed in the middle of the first box body, and a sun gear shaft installed at the top of the first box body, one end of the sun gear shaft is connected with the brake part, and the other end is adapted to extend from the side wall of the right box body;

[0009] The output shaft transmission assembly comprises a gear ring part connected to the side wall of the right box body and a planetary gear part located in the gear ring part, the extending end of the sun gear shaft is adapted to be meshingly connected with the planetary gear part, and the outer ring of the planetary gear part is meshingly connected with the inner ring of the gear ring part.

[0010] Optionally, the gear transmission component includes an input gear shaft installed on the first input shaft hole in the first housing, an intermediate gear installed on the first pin shaft hole in the first housing, and a sun gear shaft installed on the sun gear hole in the first housing, the input gear shaft is rotatably supported by a first bearing installed in the first bearing hole, the intermediate gear is rotatably supported by a first pin shaft installed in the first pin shaft hole, the side of the sun gear shaft close to the braking component is rotatably supported by a second bearing installed in the second bearing hole, the input gear shaft is meshed with the intermediate gear through a first external tooth for transmission, and the intermediate gear is meshed with the sun gear shaft for transmission.

[0011] Optionally, the brake component includes a brake flange installed on the first flange hole of the sun gear hole and a brake sleeve connected to the sun gear shaft, the brake sleeve is suitable for passing through the center of the brake flange and being plugged into the end of the sun gear shaft, and the brake flange is connected to the outer wall of the left box body through a second connecting member.

[0012] Optionally, the ring gear component includes a ring gear, a steel ring sleeved on the outer circumference of the ring gear, and a rubber-coated wheel sleeved on the outer circumference of the steel ring. The interior of the ring gear rotatably supports the planetary gear component through the fourth bearing and the fifth bearing 3, and the planetary gear component meshes with the internal teeth of the ring gear for transmission.

[0013] Optionally, the planetary gear component includes an output shaft disc and several planetary gears evenly distributed on the output shaft disc, the planetary gears are passed through the output shaft disc through a second pin shaft, a gasket passed through the second pin shaft is provided between the planetary gear and the inner walls on both sides of the output shaft disc, and several evenly distributed roller needles are provided between the second pin shaft and the planetary gear.

[0014] Optionally, a plurality of evenly distributed first pin holes and screw holes are provided on a side of the output shaft disk close to the right box body, a first pin shaft is inserted into the first pin hole, a fourth connecting member is provided in the screw hole, and an end of the first pin shaft away from the output shaft disk is suitable for being inserted into the side wall of the right box body, and an end of the fourth connecting member away from the output shaft disk is suitable for being connected to the right box body.

[0015] Optionally, the end of the sun gear shaft facing away from the brake sleeve is suitable for being mounted on the central axis of the output shaft disc through a third bearing, and the sun gear on the sun gear shaft is suitable for meshing and driving with the planetary gears.

[0016] Optionally, the output shaft transmission assembly further comprises an output bearing cover connected to the outer side wall of the output shaft disc via a fifth connecting member, and an inner stop of the output bearing cover is adapted to abut against an outer end surface of the fifth bearing.

[0017] Optionally, the gear ring and the steel ring are fixedly connected via a third connecting member.

[0018] Optionally, a second inner stop and a third inner stop are respectively provided on both sides of the gear ring, the inner ring of the fourth bearing is sleeved on one end of the output shaft disc, and the outer ring of the fourth bearing is suitable for being located in the second inner stop, and the inner ring of the fifth bearing is sleeved on the other end of the output shaft disc, and the outer ring of the fifth bearing is suitable for being located in the third inner stop.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The reducer with a braking function in the present invention is composed of a first housing, an input shaft transmission assembly, and an output shaft transmission assembly, wherein the first housing is composed of a left housing and a right housing, which are fixedly connected by a first connecting member to form an internal accommodating space for accommodating the various components of the reducer. The input shaft transmission assembly is composed of a gear transmission component and a brake component, and the gear transmission component is installed in the accommodating space. The gear transmission component is composed of an input gear shaft, an intermediate gear, and a sun gear shaft. The input gear shaft is located at the inner bottom of the first housing, the intermediate gear is located in the middle of the first housing, and the sun gear shaft is located at the inner top of the first housing. The brake component is connected to the outer side wall of the left housing and is connected to one end of the sun gear shaft.

[0021] When power is input through the input gear shaft, it is transferred through the intermediate gears and ultimately to the sun gear shaft. The sun gear shaft meshes with the planetary gear assembly, achieving speed reduction through the transmission principle of planetary gears. The outer ring of the planetary gear assembly meshes with the inner ring of the ring gear assembly, further transmitting power and achieving speed reduction. A brake assembly is connected to one end of the sun gear shaft and can brake the sun gear shaft when needed, thereby controlling or stopping the operation of the reducer. The decelerated power is output through the ring gear assembly and can be connected to other mechanical devices or equipment. This reducer has a compact structure and achieves efficient power transmission and deceleration through the fixed connection of the housing and the rational layout of the internal space. The addition of a braking function improves the reducer's controllability, allowing it to quickly stop or control speed when needed. The transmission of planetary gears enables a high reduction ratio and a small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional view of a reducer with a braking function in an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the first box in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic structural diagram of the input shaft transmission assembly in an embodiment of the present utility model;

[0025] Figure 4 It is a structural schematic diagram of the output shaft transmission assembly in an embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 1-first box;

[0028] 11 - left housing; 12 - right housing; 13 - first connecting piece; 14 - first input shaft hole; 141 - first bearing hole; 15 - first pin hole; 16 - sun gear hole; 161 - first flange hole; 162 - second bearing hole; 163 - first inner stopper;

[0029] 2-Input shaft transmission assembly;

[0030] 21-gear transmission component; 211-input gear shaft; 2111-first bearing; 2112-first external tooth;

[0031] 212 - intermediate gear; 2121 - first pin; 213 - sun gear shaft; 2131 - second bearing; 2132 - third bearing;

[0032] 22-brake component; 221-brake flange; 222-brake sleeve; 223-second connecting piece;

[0033] 3-output shaft transmission assembly;

[0034] 31-gear ring component; 311-gear ring; 3111-second inner stop; 3112-third inner stop; 312-steel ring; 313-rubber-coated wheel; 314-third connecting piece;

[0035] 32-planetary gear component; 321-output shaft; 3211-fourth bearing; 3212-fifth bearing; 3213-first pin; 3214-first pin hole; 3215-fourth connecting piece; 322-planetary gear; 3221-second pin; 3222-needle roller; 3223-gasket;

[0036] 33-output bearing cover; 331-fifth connecting piece. DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal connections between two components; they may refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] See also Figure 1-4 As shown, the embodiment of the present invention provides a reducer with a braking function, the reducer with a braking function includes a first housing 1, an input shaft transmission assembly 2 and an output shaft transmission assembly 3, wherein:

[0041] The first box body 1 includes a left box body 11 and a right box body 12 , which are fixedly connected by a first connecting member 13 , so that an accommodating space is formed inside the left box body 11 and the right box body 12 .

[0042] The input shaft transmission assembly 2 includes a gear transmission component 21 and a brake component 22 . The gear transmission component 21 is installed in the accommodating space, and the brake component 22 is connected to the outer wall of the left case 11 .

[0043] The gear transmission component 21 includes an input gear shaft 211, an intermediate gear 212 and a sun gear shaft 213. The input gear shaft 211 is installed at the inner bottom of the first housing 1, the intermediate gear 212 is installed at the inner middle position of the first housing 1, and the sun gear shaft 213 is installed at the inner top of the first housing 1. One end of the sun gear shaft 213 is connected to the brake component 22, and the other end is suitable for extending from the side wall of the right housing 12.

[0044] The output shaft transmission assembly 3 includes a ring gear component 31 and a planetary gear component 32. The ring gear component 31 is connected to the side wall of the right case 12, and the planetary gear component 32 is located inside the ring gear component 31. The protruding end of the sun gear shaft 213 is suitable for meshing and transmission connection with the planetary gear component 32, and the outer ring of the planetary gear component 32 is meshed and transmission with the inner ring of the ring gear component 31.

[0045] Specifically in this embodiment, the first housing 1 is composed of a left housing 11 and a right housing 12, which are fixedly connected by a first connecting member 13 to form an internal accommodating space for accommodating various components of the reducer.

[0046] The input shaft transmission assembly 2 is composed of a gear transmission part 21 and a brake part 22. The gear transmission part 21 is installed in the accommodating space. In this embodiment, the gear transmission part 21 is composed of an input gear shaft 211, an intermediate gear 212 and a sun gear shaft 213. The input gear shaft 211 is located at the inner bottom of the first box body 1, the intermediate gear 212 is located at the middle position in the first box body 1, and the sun gear shaft 213 is located at the inner top of the first box body 1. The brake part 22 is connected to the outer side wall of the left box body 11 and connected to one end of the sun gear shaft 213.

[0047] Thus, the power is input through the input gear shaft 211, transmitted through the intermediate gear 212, and finally transmitted to the sun gear shaft 213. The sun gear shaft 213 is engaged with the planetary gear part 32 to achieve deceleration through the transmission principle of the planetary gear. The outer ring of the planetary gear part 32 is engaged with the inner ring of the ring gear part 31 to further transmit power and achieve deceleration. The brake part 22 is connected to one end of the sun gear shaft 213, which can brake the sun gear shaft 213 when needed, thereby controlling or stopping the operation of the speed reducer. The power after deceleration is output through the ring gear part 31 and can be connected to other mechanical devices or equipment.

[0048] The speed reducer has a compact structure, realizes efficient power transmission and deceleration through the fixed connection of the box body and the reasonable layout of the internal space, the addition of the brake function improves the control ability of the speed reducer, so that it can quickly stop or control the speed when needed, and through the transmission of the planetary gear, a high deceleration ratio and a small volume can be achieved.

[0049] Further, please refer to Figure 3 As shown in the figure, the gear transmission part 21 includes an input gear shaft 211, an intermediate gear 212 and a sun gear shaft 213, wherein:

[0050] The input gear shaft 211 is installed on the first input shaft hole 14 in the first box body 1, the intermediate gear 212 is installed on the first pin shaft hole 15 in the first box body 1, and the sun gear shaft 213 is installed on the sun gear hole 16 in the first box body 1. The input gear shaft 211 is rotatably supported on the first bearing 2111 in the first bearing hole 141, the intermediate gear 212 is rotatably supported on the first pin shaft 2121 in the first pin shaft hole 15, and the sun gear shaft 213 is rotatably supported on the second bearing 2131 in the second bearing hole 162 on the side close to the brake part 22. The input gear shaft 211 is engaged and transmitted with the intermediate gear 212 through the first outer gear 2112, and the intermediate gear 212 is engaged and transmitted with the sun gear shaft 213.

[0051] In this embodiment, power is first input through input gear shaft 211, which is supported within first bearing hole 141 via first bearing 2111, ensuring stable rotation of the input shaft. First external teeth 2112 of input gear shaft 211 mesh with intermediate gear 212, enabling power transmission and primary reduction. Intermediate gear 212 meshes with sun gear shaft 213, further transmitting power and achieving secondary reduction. Sun gear shaft 213 is supported within second bearing hole 162 via second bearing 2131. One end of sun gear shaft 213 is adjacent to brake component 22, which is connected to one end of sun gear shaft 213. This allows sun gear shaft 213 to be braked when needed, controlling or stopping the operation of the entire gear transmission component 21. This design helps reduce rotation of sun gear shaft 213 during braking, improving braking efficiency.

[0052] For further information, see Figure 3 As shown, the brake component 22 includes a brake flange 221 and a brake sleeve 222. The brake flange 221 is installed on the first flange hole 161 of the sun gear hole 16. The brake sleeve 222 is suitable for passing through the center of the brake flange 221 and plugging into the end of the sun gear shaft 213. The brake flange 221 is connected to the outer wall of the left box body 11 through the second connecting member 223.

[0053] When braking is required, the brake component 22 is activated, the brake sleeve 222 penetrates from the center of the brake flange 221 and is plugged into the end of the input gear shaft 211, and transmits the braking force to the input gear shaft 211, thereby slowing down or stopping the rotation of the gear shaft.

[0054] Therefore, the design of the brake component 22 allows for a quick response when needed, thereby improving the safety and reliability of the reducer, wherein the direct connection between the brake sleeve 222 and the input gear shaft 211 ensures efficient transmission of the braking force.

[0055] For further information, see Figure 4 As shown, the ring gear component 31 includes a ring gear 311, a steel ring 312 and a rubber-coated wheel 313. The steel ring 312 is sleeved on the outer circumference of the ring gear 311, and the rubber-coated wheel 313 is sleeved on the outer circumference of the steel ring 312. The interior of the ring gear 311 rotatably supports the planetary gear component 32 through the fourth bearing 3211 and the fifth bearing 3212. The planetary gear component 32 is engaged with the internal teeth of the ring gear 311 for transmission.

[0056] In this embodiment, the ring gear component 31 consists of a ring gear 311, a steel ring 312 and a rubber-coated wheel 313, wherein the ring gear 311 is the main transmission component and has internal teeth; the steel ring 312 is sleeved on the outer circumference of the ring gear 311 to provide protection and support; the rubber-coated wheel 313 is sleeved on the outer circumference of the steel ring 312 to provide additional protection and reduce noise.

[0057] The planetary gear component 32 is located inside the ring gear component 31 and meshes with the internal teeth of the ring gear 311 for transmission. The planetary gear component 32 is rotatably supported inside the ring gear 311 through the fourth bearing 3211 and the fifth bearing 3212 .

[0058] As a result, power is transmitted to planetary gear assembly 32 through the extended end of sun gear shaft 213, meshing with the planetary gear assembly 32. Planetary gear assembly 32 then meshes with the internal teeth of ring gear 311, transmitting the power to ring gear 311. Planetary gear assembly 32 is rotatably supported within ring gear 311 by fourth and fifth bearings 3211 and 3212, ensuring free rotation and power transmission. The meshing transmission between planetary gear assembly 32 and ring gear 311 achieves both speed reduction and torque amplification.

[0059] For further information, see Figure 4 As shown, the planetary gear component 32 includes an output shaft disc 321 and a plurality of planetary gears 322 evenly distributed on the output shaft disc 321. The planetary gears 322 are passed through the output shaft disc 321 through second pins 3221. Gaskets 3223 passing through the second pins 3221 are provided between the planetary gears 322 and the inner walls on both sides of the output shaft disc 321. A plurality of evenly distributed needle rollers 3222 are provided between the second pins 3221 and the planetary gears 322.

[0060] In this embodiment, the planetary gear assembly 32 comprises an output shaft disc 321 and a plurality of planetary gears 322 evenly distributed on the output shaft disc 321. These planetary gears 322 are capable of rotating around the sun gear while meshing with the ring gear to achieve power transmission. The planetary gears 322 are mounted on the output shaft disc 321 via a second pin 3221. This structural design allows the planetary gears 322 to simultaneously rotate while orbiting, improving transmission efficiency and the flexibility of power transmission. Washers 3223 are located between the planetary gears 322 and the inner walls of the output shaft disc 321 and are mounted on the second pin 3221. These washers isolate and position the planetary gears 322, ensuring their correct positioning and smooth operation. Needle rollers 3222 are evenly distributed between the second pin 3221 and the planetary gears 322, reducing friction and providing rolling support, ensuring the smooth operation of the planetary gears 322 while improving efficiency and reducing wear.

[0061] For further information, see Figure 4 As shown, a plurality of evenly distributed first pin holes 3214 and screw holes are provided on the side of the output shaft disk 321 close to the right box body 12, a first pin shaft 3213 is inserted into the first pin hole 3214, a fourth connecting member 3215 is provided in the screw hole, and the end of the first pin shaft 3213 away from the output shaft disk 321 is suitable for being inserted into the side wall of the right box body 12, and the end of the fourth connecting member 3215 away from the output shaft disk 321 is suitable for being connected to the right box body 12.

[0062] Therefore, by providing the first pin 3213 and the fourth connecting member 3215 , accurate positioning and fixation between the output shaft disc 321 and the right case 12 are ensured, which helps to reduce relative movement and wear under high load conditions.

[0063] For further information, see Figure 3 、 4 As shown, one end of the sun gear shaft 213 away from the brake sleeve 222 is suitable for being installed at the central axis position of the output shaft disc 321 through the third bearing 2132 , and the sun gear on the sun gear shaft 213 is suitable for meshing and driving with the planetary gear 322 .

[0064] When the sun gear shaft 213 rotates, the sun gear on one side of the sun gear shaft 213 rotates accordingly, and the power is transmitted to the planetary gears 322 through the engagement between the sun gear and the planetary gears 322. This transmission method allows the planetary gears 322 to rotate while revolving around the sun gear, thereby achieving power output.

[0065] For further information, see Figure 4 As shown, the output shaft transmission assembly 3 also includes an output bearing cover 33, which is connected to the outer wall of the output shaft disc 321 through a fifth connecting member 331, and the inner stop of the output bearing cover 33 is suitable for abutting against the outer end surface of the fifth bearing 3212.

[0066] In this embodiment, the fifth bearing 3212 is a key connecting component between the planetary gear component 32 and the output shaft disc 321. The inner stop of the output bearing cover 33 abuts against its outer end face, ensuring the precise positioning and stability of the bearing, while also protecting the bearing from external contamination and damage.

[0067] For further information, see Figure 4 As shown, the gear ring 311 and the steel ring 312 are fixedly connected via a third connecting member 314 .

[0068] Since the fixed connection between the gear ring 311 and the steel ring 312 needs to be able to reliably transmit torque and axial force, the third connecting member 314 must be able to withstand these forces to ensure the stability and efficiency of the transmission system.

[0069] For further information, see Figure 4 As shown, a second inner stop 3111 and a third inner stop 3112 are respectively provided on both sides of the ring gear 311, the inner ring of the fourth bearing 3211 is sleeved on one end of the output shaft disc 321, and the outer ring of the fourth bearing 3211 is suitable for being located in the second inner stop 3111, the inner ring of the fifth bearing 3212 is sleeved on the other end of the output shaft disc 321, and the outer ring of the fifth bearing 3212 is suitable for being located in the third inner stop 3112.

[0070] In this embodiment, a second inner stop 3111 and a third inner stop 3112 are provided on either side of the ring gear 311, respectively, to axially position the bearing and ensure axial stability and precision. This reduces vibration and noise, facilitates maintenance and replacement, improves overall rigidity, and enhances dustproofing and sealing, thereby extending the performance and service life of the reducer.

[0071] Although the utility model is disclosed as above, the scope of protection of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of protection of the utility model.

Claims

1. A reducer with a braking function, characterized in that: include: a first box body, the first box body comprising a left box body and a right box body fixedly connected by a first connecting member, so that a accommodating space is formed inside the left box body and the right box body; An input shaft transmission assembly, comprising a gear transmission component installed in the accommodating space and a brake component connected to the outer side of the left case; The gear transmission component includes an input gear shaft installed at the bottom of the first housing, an intermediate gear installed in the middle of the first housing, and a sun gear shaft installed at the top of the first housing. One end of the sun gear shaft is connected to the brake component, and the other end is suitable for extending from the side wall of the right housing. The output shaft transmission assembly includes a ring gear component connected to the side wall of the right box body and a planetary gear component located inside the ring gear component. The protruding end of the sun gear shaft is suitable for meshing and transmitting with the planetary gear component, and the outer ring of the planetary gear component is meshed and transmitted with the inner ring of the ring gear component.

2. The reducer with braking function according to claim 1, characterized in that: The gear transmission component includes an input gear shaft installed on the first input shaft hole in the first housing, an intermediate gear installed on the first pin shaft hole in the first housing, and a sun gear shaft installed on the sun gear hole in the first housing. The input gear shaft is rotatably supported by a first bearing installed in the first bearing hole, the intermediate gear is rotatably supported by a first pin shaft installed in the first pin shaft hole, and the side of the sun gear shaft close to the braking component is rotatably supported by a second bearing installed in a second bearing hole. The input gear shaft is meshed with the intermediate gear through a first external tooth for transmission, and the intermediate gear is meshed with the sun gear shaft for transmission.

3. The reducer with braking function according to claim 2, characterized in that: The brake component includes a brake flange installed on the first flange hole of the sun gear hole and a brake sleeve connected to the sun gear shaft. The brake sleeve is suitable for passing through the center of the brake flange and being plugged into the end of the sun gear shaft. The brake flange is connected to the outer wall of the left box body through a second connecting member.

4. The reducer with braking function according to claim 3, characterized in that: The gear ring component includes a gear ring, a steel ring sleeved on the outer circumference of the gear ring, and a rubber-coated wheel sleeved on the outer circumference of the steel ring. The planetary gear component is rotatably supported inside the gear ring through a fourth bearing and a fifth bearing, and the planetary gear component is engaged with the internal teeth of the gear ring for transmission.

5. The reducer with braking function according to claim 4, characterized in that: The planetary gear component includes an output shaft disc and several planetary gears evenly distributed on the output shaft disc. The planetary gears are inserted into the output shaft disc through second pins. Gaskets inserted into the second pins are provided between the planetary gears and the inner walls on both sides of the output shaft disc. Several evenly distributed roller needles are provided between the second pins and the planetary gears.

6. The reducer with braking function according to claim 5, characterized in that: A plurality of evenly distributed first pin holes and screw holes are provided on the side of the output shaft disk close to the right box body, a first pin shaft is inserted into the first pin hole, a fourth connecting member is provided in the screw hole, and an end of the first pin shaft away from the output shaft disk is suitable for being inserted into the side wall of the right box body, and an end of the fourth connecting member away from the output shaft disk is suitable for being connected to the right box body.

7. The reducer with braking function according to claim 5, characterized in that: One end of the sun gear shaft facing away from the brake sleeve is adapted to be mounted on the central axis of the output shaft disc via a third bearing, and the sun gear on the sun gear shaft is adapted to mesh with the planetary gears for transmission.

8. The reducer with braking function according to claim 5, characterized in that: The output shaft transmission assembly further includes an output bearing cover connected to the outer side wall of the output shaft disc via a fifth connecting member, and an inner stop of the output bearing cover is suitable for abutting against the outer end surface of the fifth bearing.

9. The reducer with braking function according to claim 4, characterized in that: The gear ring and the steel ring are fixedly connected via a third connecting member.

10. The reducer with braking function according to claim 6, characterized in that: A second inner stop and a third inner stop are respectively provided on both sides of the gear ring. The inner ring of the fourth bearing is sleeved on one end of the output shaft disc, and the outer ring of the fourth bearing is suitable for being located in the second inner stop. The inner ring of the fifth bearing is sleeved on the other end of the output shaft disc, and the outer ring of the fifth bearing is located in the third inner stop.

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