Planetary brake roller structure

Abstract

The utility model relates to a kind of planetary brake roller structure, including machine body, brake structure and transmission structure are equipped in the machine body, the machine body includes static machine body and dynamic machine body, the static machine body is rotatably connected with dynamic machine body, the transmission mechanism includes transmission shaft that is passed in static machine body, the transmission shaft side is equipped with sun gear, the sun gear is placed in dynamic machine body, the sun gear outer periphery is equipped with several planetary gears, the sun gear is engaged with planetary gear, the dynamic machine body inner wall is equipped with the annular clamping tooth for the side engagement of planetary gear one, static machine body is rotatably connected with dynamic machine body, when torque is increased by the planetary gear and works on the torque reduction of sun gear, and sun gear is connected with transmission shaft, torque is therefore transmitted to transmission shaft, using planetary gear speed-up can increase the rotational speed while reducing the overall volume of roller, increase product applicability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, specifically to a planetary brake roller structure. Background Technology

[0002] A brake roller structure is a device that achieves braking through rolling friction. It typically consists of a roller, a brake disc, a clamping mechanism, and transmission components. Its core principle is to utilize the contact pressure between the roller and the brake disc to generate friction. The rotation or clamping action of the roller converts kinetic energy into heat energy, thereby achieving the braking effect. This structure features smooth braking, rapid response, and good heat dissipation, and is widely used in equipment such as cranes, elevators, and mining machinery. It effectively controls the speed or stops moving parts, ensuring the safety and reliability of equipment operation.

[0003] CN114955780A discloses a roller braking mechanism in which a roller is rotatably mounted on a wheel seat. The roller braking mechanism includes a brake ring, a friction element, and a drive mechanism. The brake ring is coaxially and fixedly connected to the roller and is located between the roller and the wheel seat. The friction element is mounted on the wheel seat and located inside the brake ring. The drive mechanism is used to drive the friction element to move radially along the brake ring so as to make frictional contact with the brake ring and realize roller braking. However, the braking structure of this technology has the problems of large braking device size and large braking torque, which makes it unsuitable for applications with high requirements for lightweighting and rapid braking. Therefore, this technology still has some room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a planetary brake roller structure to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a planetary brake roller structure, comprising a body, wherein the body is provided with a braking structure and a transmission structure, characterized in that: the body comprises a stationary body and a motor body, the stationary body and the motor body are rotatably connected, the transmission structure includes a transmission shaft passing through the stationary body, a sun gear is provided on one side of the transmission shaft, the sun gear is placed in the motor body, a plurality of planet gears are provided on the outer periphery of the sun gear, the sun gear meshes with the planet gears, and the inner wall of the motor body is provided with annular retaining teeth for one side of the planet gears to mesh.

[0006] With the above technical solution, the stationary body and the engine body are rotatably connected, the transmission shaft passes through the stationary body, the sun gear is fixedly set on one side of the transmission shaft, and several planetary gears are provided on the outer periphery of the sun gear. The planetary gears mesh with the annular retaining teeth in the engine body and the sun gear at the same time. Therefore, when the torque is increased by the speed-up through this structure, the torque working on the sun gear is reduced. Since the sun gear is connected to the transmission shaft, the torque is thus transmitted to the transmission shaft. Using planetary gears to increase speed can increase the rotational speed while reducing the overall volume of the roller, thus increasing the applicability of the product.

[0007] The aforementioned planetary brake roller structure can be further configured as follows: the transmission shaft is fitted with a spline body, a planetary gear carrier is fixedly provided on one side of the spline body, a plurality of connecting columns for connecting planetary gears are provided on the outer periphery of the planetary gear carrier, a positioning plate for positioning and installing the sun gear is provided at the center of the planetary gear carrier, and the sun gear is connected to the rotating shaft through a spline shaft.

[0008] Using the above technical solution, the spline body is sleeved on the drive shaft, providing a power transmission path for the planetary gear carrier. The connecting column on the outer periphery of the planetary gear carrier ensures the installation of the planetary gears and the stability of their rotation. The spline shaft ensures that the drive shaft can drive the sun gear to rotate.

[0009] The aforementioned planetary brake roller structure can be further configured as follows: a full complement cylindrical roller bearing is provided between the connecting column and the planetary gear; a shaft retainer is also provided between the full complement cylindrical roller bearing and the connecting column to fix the full complement cylindrical roller bearing; a first deep groove ball bearing is provided between the spline body and the transmission shaft; and a hole retainer is provided between the first deep groove ball bearing and the positioning plate, and between the full complement cylindrical roller bearing and the planetary gear.

[0010] By adopting the above technical solution, the full complement cylindrical roller bearing effectively reduces the frictional resistance between the connecting column and the planetary gears, and improves the smoothness of transmission. The shaft snap ring is fixed between the full complement cylindrical roller bearing and the connecting column, ensuring the stability of the bearing during rotation and preventing axial displacement. The first deep groove ball bearing is supported between the spline body and the transmission shaft, bearing radial and axial loads. The hole snap ring firmly connects the full complement cylindrical roller bearing and the planetary gears, and fixes the first deep groove ball bearing to the positioning plate.

[0011] The aforementioned planetary brake roller structure can be further configured as follows: the motor body is sleeved on the periphery of the stationary body, a tapered roller bearing and a labyrinth gap are provided between the stationary body and the motor body, a first pressure cap is fixedly installed at one end of the stationary body inside the motor body, the first pressure cap abuts against the tapered roller bearing, the labyrinth gap is provided on one side of the tapered roller bearing, and a floating oil seal is provided between the labyrinth gap and the tapered roller bearing.

[0012] Using the above technical solution, the tapered roller bearing is positioned between the stationary body and the moving body, effectively supporting their relative rotation. The first pressure cap is fixed to one end of the stationary body and abuts against the tapered roller bearing to prevent axial movement of the tapered roller bearing. The labyrinth clearance is located on one side of the tapered roller bearing, effectively preventing dust, moisture, and other impurities from entering the machine body. The floating oil seal further seals the area between the labyrinth clearance and the tapered roller bearing, preventing lubricating oil leakage and blocking external contaminants from entering.

[0013] The aforementioned planetary brake roller structure can be further configured as follows: the brake structure includes an installation cavity between a spline body and a rotating shaft; a piston is sleeved within the installation cavity on the drive shaft; an inner friction plate and an outer friction plate are intermittently arranged on one side of the piston; one side of the inner friction plate abuts against the drive shaft; one side of the outer friction plate abuts against the spline body; one end of the piston abuts against the outer friction plate; a second pressure cap is fixedly installed at the end of the spline body away from the planetary gear carrier; a contact spring is provided between the second pressure cap and the piston; a second deep groove bearing is provided between the second pressure cap and the rotating shaft; and a hydraulic structure capable of driving the piston to move axially is also provided between the spline body and the stationary body.

[0014] Using the above technical solution, the outer friction plate and the inner friction plate are intermittently arranged. One side of the inner friction plate abuts against the drive shaft, and one side of the outer friction plate abuts against the spline body. A retaining spring is provided between the second pressure plate and the piston to cause the piston to abut against the outer friction plate in the normal state, and the roller is in a braking state. The hydraulic structure pushes the piston to move axially toward the second pressure plate through hydraulic pressure. After the outer friction plate and the inner friction plate lose the pressing effect of the piston, they will be released, the drive shaft will be released from the braking state, and the roller can rotate normally.

[0015] The aforementioned planetary brake roller structure can be further configured as follows: the hydraulic structure includes an oil inlet hole axially disposed on one side of the stationary body and a first oil passage axially disposed within the stationary body; the spline body is provided with a second oil passage, one end of the second oil passage communicating with the mounting cavity and the other end communicating with the first oil passage.

[0016] Using the above technical solution, the first oil circuit is axially set in the stationary body, and the oil inlet is connected to the second oil circuit in the spline body. One end of the second oil circuit is connected to the mounting cavity, and the other end is connected to the first oil circuit, so as to realize the control of the piston by the hydraulic oil and drive the piston to move axially to achieve braking or reset.

[0017] The aforementioned planetary brake roller structure can be further configured such that: the motor body is provided with a third pressure cover on the side of the sun gear, and the first pressure cover, the second pressure cover, and the third pressure cover are all provided with mounting holes and fixing bolts, so that the first pressure cover, the second pressure cover, and the third pressure cover are respectively fixedly connected to the stationary motor body, the spline body, and the motor body.

[0018] Using the above technical solution, the first pressure cover, the second pressure cover, and the third pressure cover are respectively fixed to one side of the stationary body, the spline body, and the engine body through mounting holes and fixing bolts. The first pressure cover abuts against the tapered roller bearing, ensuring the stability of the bearing; the second pressure cover cooperates with the piston through the abutment spring, ensuring the reset of the braking system; and the third pressure cover is fixed to one side of the sun gear of the engine body, providing protection and support for the internal transmission structure.

[0019] The aforementioned planetary brake roller structure can be further configured such that: a plurality of sealing rings are provided between the piston and the spline body and between the spline body and the stationary body.

[0020] By adopting the above technical solution, the sealing ring effectively prevents hydraulic oil leakage, ensuring the control of the piston by the hydraulic structure. At the same time, the sealing ring also prevents external dust, moisture and other impurities from entering the mounting cavity or oil circuit, avoiding accelerated wear of the friction plate or failure of hydraulic components.

[0021] The aforementioned planetary brake roller structure can be further configured such that: an inner groove is provided on the outer periphery of the motor body, and a rubber bushing is provided in the inner groove.

[0022] By adopting the above technical solution, the shock absorption performance of the roller is improved by setting an embedded groove and a rubber bushing on the outer periphery of the motor body. The embedded groove provides an installation position for the rubber bushing, and the rubber bushing effectively absorbs the vibration and impact generated during the transmission process through its elastic properties, thereby reducing noise and component wear.

[0023] The beneficial effects of this utility model are: the stationary body and the motor body are rotatably connected, and when the torque is increased by the planetary gear, the torque working on the sun gear is reduced. Since the sun gear is connected to the transmission shaft, the torque is thus transmitted to the transmission shaft, achieving rapid braking. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a diagram of the braking structure of this utility model;

[0026] Label annotations: 1-Stationary body, 2-Motor body, 3-Drive shaft, 4-Sun gear, 5-Planet gear, 6-Annular retaining ring, 7-Splined body, 8-Planet gear carrier, 9-Connecting column, 10-Positioning plate, 11-Splined shaft, 12-Full complement cylindrical roller bearing, 13-Shaft retaining ring, 14-First deep groove ball bearing, 15-Bore retaining ring, 16-Tap roller bearing, 17-Labyrinth clearance, 18-First pressure plate, 19-Floating oil seal, 20-Mounting cavity, 21-Piston, 22-Inner friction plate, 23-Outer friction plate, 24-Second pressure plate, 25-Abutment spring, 26-Second deep groove bearing, 27-Oil inlet, 28-First oil passage, 29-Second oil passage, 30-Third pressure plate, 31-Mounting hole, 32-Fixing bolt, 33-Sealing ring, 34-Inner groove, 35-Rubber bushing. Detailed Implementation

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0028] like Figure 1-2The present invention provides the following technical solution: a planetary brake roller structure, including a body, a braking structure and a transmission structure inside the body. The body includes a stationary body 1 and a motor body 2, which are rotatably connected. The transmission structure includes a drive shaft 3 passing through the stationary body 1, a sun gear 4 on one side of the drive shaft 3, the sun gear 4 being placed inside the motor body 2, and a plurality of planet gears 5 on the outer periphery of the sun gear 4, which mesh with the planet gears 5. The inner wall of the motor body 2 is provided with an annular retaining teeth 6 for meshing with one side of the planet gears 5. The stationary body 1 and the motor body 2 are rotatably connected. The drive shaft 3 passes through the stationary body 1, the sun gear 4 is fixedly disposed on one side of the drive shaft 3, and a plurality of planet gears 5 are located on the outer periphery of the sun gear 4, which mesh with the annular retaining teeth 6 inside the motor body 2. The shaped gear 6 and the sun gear 4 mesh simultaneously. Therefore, when the torque is increased by this structure, the torque working on the sun gear 4 is reduced. Since the sun gear 4 is connected to the drive shaft 3, the torque is transmitted to the drive shaft 3. Using planetary gears 5 to increase speed can increase the rotational speed while reducing the overall size of the roller, thus increasing the applicability of the product. The drive shaft is fitted with a spline body 7, and a planetary gear carrier 8 is fixed on one side of the spline body 7. The outer periphery of the planetary gear carrier 8 is provided with several connecting posts 9 for connecting the planetary gears 5. The center of the planetary gear carrier 8 is provided with a positioning plate 10 for positioning and installing the sun gear 4. The sun gear 4 is connected to the rotating shaft through a spline shaft 11. The spline body 7 is fitted on the drive shaft, providing a power transmission path for the planetary gear carrier 8. The connecting posts 9 on the outer periphery of the planetary gear carrier 8 ensure that... The installation of planetary gear 5 ensures stable rotation of planetary gear 5. The spline shaft 11 ensures that the transmission shaft can drive the sun gear 4 to rotate. A full complement cylindrical roller bearing 12 is provided between the connecting column 9 and the planetary gear 5. A shaft retainer 13 is also provided between the full complement cylindrical roller bearing 12 and the connecting column 9 to fix the full complement cylindrical roller bearing 12. A first deep groove ball bearing 14 is provided between the spline body 7 and the transmission shaft 3. Hole retainers 15 are provided between the first deep groove ball bearing 14 and the positioning plate 10, and between the full complement cylindrical roller bearing 12 and the planetary gear 5. The full complement cylindrical roller bearing 12 effectively reduces the frictional resistance between the connecting column 9 and the planetary gear 5, and improves the smoothness of transmission. The shaft retainer 13 is fixed to the full complement cylindrical roller bearing 12 and the planetary gear 5. Between the connecting columns 9, the stability of the bearing during rotation is ensured, preventing axial displacement. The first deep groove ball bearing 14 is supported between the spline body 7 and the drive shaft 3, bearing radial and axial loads. The retaining ring 15 securely connects the full complement cylindrical roller bearing 12 to the planetary gear 5 and fixes the first deep groove ball bearing 14 to the positioning plate 10. The engine body 2 is sleeved on the outer periphery of the stationary body 1. A tapered roller bearing 16 and a labyrinth clearance 17 are provided between the stationary body 1 and the engine body 2. A first pressure cap 18 is fixedly installed at one end of the stationary body 1 inside the engine body 2. The first pressure cap 18 abuts against the tapered roller bearing 16. The labyrinth clearance 17 is located on one side of the tapered roller bearing 16. A floating oil seal 19 is provided between the labyrinth clearance 17 and the tapered roller bearing 16.A tapered roller bearing 16 is positioned between the stationary body 1 and the moving body 2, effectively supporting their relative rotation. A first pressure cap 18 is fixed to one end of the stationary body 1, abutting against the tapered roller bearing 16 to prevent axial movement of the bearing. A labyrinth gap 17 is located on one side of the tapered roller bearing 16, effectively preventing dust, moisture, and other impurities from entering the machine body. A floating oil seal 19 further seals the area between the labyrinth gap 17 and the tapered roller bearing 16, preventing lubricant leakage and blocking external contaminants from entering.

[0029] like Figure 1-2The present invention provides the following technical solution: a planetary brake roller structure, the brake structure including a mounting cavity 20 between a splined body 7 and a rotating shaft, a piston 21 sleeved inside the mounting cavity 20, an inner friction plate 22 and an outer friction plate 23 intermittently arranged on one side of the piston 21, one side of the inner friction plate 22 abutting against the driving shaft, one side of the outer friction plate 23 abutting against the splined body 7, one end of the piston 21 abutting against the outer friction plate 23, a second pressure plate 24 fixedly installed on the end of the splined body 7 away from the planetary gear carrier 8, a retaining spring 25 between the second pressure plate 24 and the piston 21, and a second pressure plate 25 between the second pressure plate 24 and the rotating shaft. A hydraulic structure capable of driving the piston 21 to move axially is provided between the two deep groove bearings 26, the spline body 7, and the stationary body 1. The outer friction plate 23 and inner friction plate 22 are intermittently arranged. One side of the inner friction plate 22 abuts against the drive shaft, and one side of the outer friction plate 23 abuts against the spline body 7. A retaining spring 25 is provided between the second pressure cover 24 and the piston 21 to ensure that the piston 21 abuts against the outer friction plate 23 under normal conditions, and the roller is in a braking state. The hydraulic structure pushes the piston 21 axially toward the second pressure cover 24 through hydraulic pressure. After the outer friction plate 23 and inner friction plate 22 lose the clamping effect of the piston 21, they will release, and the drive shaft 3 will be released from its braking state. To enable the rollers to rotate normally, the hydraulic structure includes an oil inlet 27 axially located on one side of the stationary body 1 and a first oil passage 28 axially located within the stationary body 1. The spline body 7 has a second oil passage 29, one end of which communicates with the mounting cavity 20 and the other end with the first oil passage 28. The first oil passage 28 is axially located within the stationary body 1, connecting the oil inlet 27 with the second oil passage 29 within the spline body 7. One end of the second oil passage 29 communicates with the mounting cavity 20, and the other end connects with the first oil passage 28, thus enabling hydraulic oil to control the piston 21, driving the piston 21 to move axially to achieve braking or resetting. The motor body 2 is located at the sun gear. A third pressure cover 30 is provided on one side. The first pressure cover 18, the second pressure cover 24, and the third pressure cover 30 are all provided with mounting holes 31 and fixing bolts 32, so that the first pressure cover 18, the second pressure cover 24, and the third pressure cover 30 are fixedly connected to the stationary body 1, the spline body 7, and the engine body 2 respectively. The first pressure cover 18, the second pressure cover 24, and the third pressure cover 30 are fixed to one side of the stationary body 1, the spline body 7, and the engine body 2 respectively through mounting holes 31 and fixing bolts 32. The first pressure cover 18 abuts against the tapered roller bearing 16 to ensure the stability of the bearing. The second pressure cover 24 cooperates with the piston 21 through the abutment spring 25 to ensure the reset of the braking system.The third pressure cap 30 is fixed to one side of the sun gear 4 of the engine body 2, providing protection and support for the internal transmission structure. Several sealing rings 33 are provided between the piston 21 and the spline body 7, and between the spline body 7 and the stationary body 1. The sealing rings 33 effectively prevent hydraulic oil leakage, ensuring the hydraulic structure's control over the piston 21. Simultaneously, the sealing rings 33 prevent external dust, moisture, and other impurities from entering the mounting cavity 20 or oil circuit, avoiding accelerated wear of the friction plates or failure of hydraulic components. An inner groove 34 is provided on the outer periphery of the engine body 2, and a rubber bushing 35 is installed within the inner groove 34. By providing the inner groove 34 and the rubber bushing 35 on the outer periphery of the engine body 2, the shock absorption performance of the rollers is improved. The inner groove 34 provides an installation position for the rubber bushing 35, which, through its elastic properties, effectively absorbs vibrations and impacts generated during transmission, reducing noise and component wear.

[0030] The beneficial effects of this utility model are as follows: the stationary body 1 is rotatably connected to the motor body 2. When the torque is increased by the planetary gear 5, the torque working on the sun gear 4 is reduced. Since the sun gear 4 is connected to the transmission shaft 3, the torque is thus transmitted to the transmission shaft 3, achieving rapid braking.

Claims

1. A planetary brake roller structure, comprising a body, wherein the body is provided with a braking structure and a transmission structure, characterized in that: The machine body includes a stationary body and an engine body, the stationary body and the engine body are rotatably connected, the transmission structure includes a transmission shaft passing through the stationary body, a sun gear is provided on one side of the transmission shaft, the sun gear is placed in the engine body, a plurality of planet gears are provided on the outer periphery of the sun gear, the sun gear meshes with the planet gears, and the inner wall of the engine body is provided with annular retaining teeth for one side of the planet gears to mesh.

2. The planetary brake roller structure according to claim 1, characterized in that: The drive shaft is fitted with a splined body, and a planetary gear carrier is fixedly mounted on one side of the splined body. The outer periphery of the planetary gear carrier is provided with several connecting columns for connecting the planetary gears. The center of the planetary gear carrier is provided with a positioning plate for positioning and mounting the sun gear. The sun gear is connected to the rotating shaft through a splined shaft.

3. The planetary brake roller structure according to claim 2, characterized in that: A full complement cylindrical roller bearing is provided between the connecting column and the planetary gear. A shaft retainer is also provided between the full complement cylindrical roller bearing and the connecting column to fix the full complement cylindrical roller bearing. A first deep groove ball bearing is provided between the spline body and the drive shaft. A hole retainer is provided between the first deep groove ball bearing and the positioning plate, and between the full complement cylindrical roller bearing and the planetary gear.

4. The planetary brake roller structure according to claim 3, characterized in that: The motor body is fitted around the periphery of the stationary body. A tapered roller bearing and a labyrinth gap are provided between the stationary body and the motor body. A first pressure cap is fixedly installed at one end of the stationary body inside the motor body. The first pressure cap abuts against the tapered roller bearing. The labyrinth gap is located on one side of the tapered roller bearing. A floating oil seal is provided between the labyrinth gap and the tapered roller bearing.

5. The planetary brake roller structure according to claim 1, characterized in that: The braking structure includes a mounting cavity between a spline body and a rotating shaft. A piston is fitted inside the mounting cavity, and an inner friction plate and an outer friction plate are intermittently arranged on one side of the piston. One side of the inner friction plate abuts against the driving shaft, and one side of the outer friction plate abuts against the spline body. One end of the piston abuts against the outer friction plate. A second pressure cap is fixedly installed at the end of the spline body away from the planetary gear carrier. A retaining spring is provided between the second pressure cap and the piston. A second deep groove bearing is provided between the second pressure cap and the rotating shaft. A hydraulic structure capable of driving the piston to move axially is also provided between the spline body and the stationary body.

6. The planetary brake roller structure according to claim 5, characterized in that: The hydraulic structure includes an oil inlet hole axially disposed on one side of the stationary body and a first oil passage axially disposed within the stationary body. The spline body is provided with a second oil passage, one end of which communicates with the mounting cavity and the other end of which communicates with the first oil passage.

7. The planetary brake roller structure according to claim 4, characterized in that: The engine body is provided with a third pressure cover on one side of the sun gear. The first pressure cover, the second pressure cover, and the third pressure cover are all provided with mounting holes and fixing bolts, so that the first pressure cover, the second pressure cover, and the third pressure cover are fixedly connected to the stationary body, the spline body, and the engine body, respectively.

8. The planetary brake roller structure according to claim 5, characterized in that: Several sealing rings are provided between the piston and the spline body, and between the spline body and the stationary body.

9. A planetary brake roller structure according to claim 8, characterized in that: The outer periphery of the motor body is provided with an inner groove, and a rubber bushing is provided inside the inner groove.

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