A planetary carrier of a speed reducer

Abstract

The utility model relates to the technical field of speed reducer, and disclose a kind of planetary carrier of speed reducer, the planetary carrier of speed reducer, including inner tooth disc, inner tooth disc inner side is provided with power output shaft stem by the toothed disc reduction assembly of meshing, and toothed disc reduction assembly power input end is fixedly connected with power input shaft stem;It further includes heat exchange mechanism, heat exchange mechanism includes equidistance and is set in the flow guide groove of inner tooth disc inner wall, and the flow guide groove section is spiral, and inner tooth disc top side is fixedly connected with the through liquid inlet pipe of one side. Cooling liquid flows into flow guide groove and flows out from liquid outlet pipe after heat absorption, while graphene heat conduction sleeve guides inner tooth disc heat to radiating fin, by air natural convection heat dissipation, the efficient management of internal heat is realized by the cooperation, maintain lubricating liquid performance stability, avoid the deterioration of lubricating liquid performance due to local overheating, component wear, ensure the stable operation of speed reducer.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a planetary carrier for a speed reducer. Background Technology

[0002] In the field of speed reducer technology, the planetary carrier of the speed reducer is a key component. It is mainly used to support components such as planetary gears and to realize the speed reduction function in the power transmission process. Through the meshing between the sun gear, planetary gears and internal gear disc, the input high-speed rotation is converted into low-speed high-torque output. It is widely used in various mechanical equipment that require speed regulation.

[0003] When a traditional planetary gearbox is running, the high-speed rotation of the internal transmission components generates a large amount of heat. If the heat cannot be dissipated in time, it will lead to excessively high local temperatures, which will reduce the viscosity of the lubricating fluid, accelerate the oxidation rate, destroy the effective lubricating film formed between the transmission components, and thus aggravate component wear, affect the transmission accuracy and stability of the gearbox, and shorten its service life. Therefore, it is urgent to develop a planetary gearbox carrier to solve these practical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a planetary carrier for a speed reducer, which solves the problem that the high-speed operation of internal transmission components generates a large amount of heat. If the heat cannot be dissipated in time, it will lead to excessively high local temperatures, which will reduce the viscosity of the lubricating fluid, accelerate the oxidation rate, and destroy the effective lubricating film formed by the lubricating fluid between the transmission components.

[0005] To achieve the above objectives, this utility model provides a planetary gear carrier for a speed reducer through the following technical solution: an internal gear disk, wherein a power output shaft is provided on the inner side of the internal gear disk through a meshing gear reducer assembly, and a power input shaft is fixedly connected to the power input end of the gear reducer assembly.

[0006] It also includes a heat exchange mechanism, which includes flow guide grooves equidistantly opened on the inner wall of the inner toothed disk, and the flow guide grooves have a spiral cross-section. A liquid inlet pipe is fixedly connected to one side of the top of the inner toothed disk, and the bottom end of the liquid inlet pipe is connected to the flow guide groove. A heat-conducting sleeve is sleeved on the outer side of the inner toothed disk, and heat dissipation fins are sleeved on the outer side of the heat-conducting sleeve. A liquid outlet pipe is fixedly connected to one side of the bottom of the inner toothed disk, and the top of the liquid outlet pipe is connected to the flow guide groove.

[0007] Preferably, the outer side of the heat-conducting sleeve is adapted to the inner diameter of the heat dissipation fins, and the heat-conducting sleeve is made of graphene material.

[0008] Preferably, the gear reducer assembly includes a sun gear rotatably mounted inside the center of the inner gear disk, multiple sets of planetary gears meshing on the outer side of the sun gear, and the planetary gears meshing with the teeth of the inner wall of the inner gear disk. The top of the multiple sets of planetary gears is fixedly connected to a flange transmission disk via a support rod. The top of the flange transmission disk is fixedly connected to the bottom of the power output shaft, and the bottom of the sun gear is fixedly connected to the top of the power input shaft.

[0009] Preferably, a protective shell is fixed to the top of the internal gear disc, and the power output shaft passes through the top of the protective shell.

[0010] Preferably, the top of the protective shell is provided with a wear-resistant and dustproof component, which includes a tungsten carbide wear-resistant layer fixed to the top of the protective shell, and the tungsten carbide wear-resistant layer is located on the outside of the power output shaft. A rubber sealing layer is provided on the outside of the tungsten carbide wear-resistant layer, and a polyurethane buffer layer is sleeved on the inner side of the rubber sealing layer. The inner wall of the polyurethane buffer layer is fixedly connected to the outer side of the tungsten carbide wear-resistant layer.

[0011] Preferably, the power output shaft, the power input shaft, and the sun gear shaft are collinear, and both the power output shaft and the power input shaft are provided with protruding connecting parts on their outer sides.

[0012] This utility model provides a planetary carrier for a speed reducer. Compared with the prior art, it has the following advantages.

[0013] 1. The coolant flows into the guide groove through the inlet pipe, absorbs heat, and then flows out through the outlet pipe. At the same time, the graphene heat-conducting sleeve conducts the heat of the inner gear disk to the heat dissipation fins, and dissipates heat through natural air convection. The two work together to achieve efficient internal heat management, maintain stable lubricant performance, avoid lubricant performance deterioration and component wear due to local overheating, and ensure stable operation of the reducer.

[0014] 2. In the wear-resistant and dustproof components, the tungsten carbide wear-resistant layer withstands shaft friction with its high hardness, preventing wear on the top of the power output shaft and extending its lifespan. The rubber sealing layer, with its elasticity and sealing properties, adheres to the shaft to block dust, preventing wear on internal components and ensuring accuracy. The polyurethane buffer layer, with its excellent cushioning properties, absorbs and disperses the impact on the top of the protective shell, reducing the impact on the shaft and internal components. The three components work together to provide comprehensive protection for the power output shaft, solving the problems of performance degradation and failure caused by wear, dust, and impact, and ensuring the stable operation of the planetary carrier of the reducer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional schematic diagram of the present invention;

[0018] Figure 4 This is a partial sectional view of the present invention from below;

[0019] Figure 5 This is a partial schematic diagram of the wear-resistant and dustproof component of this utility model.

[0020] In the diagram: 1. Internal gear disc; 101. Sun gear; 102. Planetary gear; 103. Flange drive disc; 104. Power output shaft; 105. Power input shaft; 2. Heat exchange mechanism; 201. Guide channel; 202. Liquid inlet pipe; 203. Heat-conducting sleeve; 204. Heat dissipation fins; 205. Liquid outlet pipe; 3. Wear-resistant and dustproof components; 301. Tungsten carbide wear-resistant layer; 302. Rubber sealing layer; 303. Polyurethane buffer layer; 4. Protective shell. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] First implementation method:

[0023] refer to Figure 1-5 A planetary gear carrier for a speed reducer includes an internal gear disk 1. A power output shaft 104 is provided on the inner side of the internal gear disk 1 through a meshing gear disk reduction assembly, and a power input shaft 105 is fixedly connected to the power input end of the gear disk reduction assembly.

[0024] It also includes a heat exchange mechanism 2, which includes flow channels 201 equidistantly opened on the inner wall of the inner toothed disk 1, and the flow channels 201 have a spiral cross-section. A liquid inlet pipe 202 is fixedly connected to one side of the top of the inner toothed disk 1, and the bottom end of the liquid inlet pipe 202 is connected to the flow channel 201. A heat-conducting sleeve 203 is sleeved on the outside of the inner toothed disk 1, and heat dissipation fins 204 are sleeved on the outside of the heat-conducting sleeve 203. A liquid outlet pipe 205 is fixedly connected to one side of the bottom of the inner toothed disk 1, and the top of the liquid outlet pipe 205 is connected to the flow channel 201.

[0025] The outer side of the heat-conducting sleeve 203 is adapted to the inner diameter of the heat dissipation fins 204, and the heat-conducting sleeve 203 is made of graphene material. The gear reducer assembly includes a sun gear 101 rotatably mounted in the center of the inner gear disk 1. Multiple sets of planetary gears 102 are meshed on the outer side of the sun gear 101, and the planetary gears 102 mesh with the teeth of the inner wall of the inner gear disk 1. The top of the multiple sets of planetary gears 102 is fixedly connected to a flange drive disk 103 through a support rod. The top of the flange drive disk 103 is fixedly connected to the bottom of the power output shaft 104, and the bottom of the sun gear 101 is fixedly connected to the top of the power input shaft 105.

[0026] The power output shaft 104 and the power input shaft 105 are collinear with the axis of the sun gear 101, and both the power output shaft 104 and the power input shaft 105 have protruding connecting parts on their outer sides.

[0027] After connecting the power input shaft 105 to an external transmission device and the power output shaft 104 to an external power output device, the power input shaft 105 drives the sun gear 101 to rotate. The sun gear 101 drives the planetary gear 102, which meshes with it, to roll on the inner wall of the internal gear disk 1. The planetary gear 102 transmits power to the power output shaft 104 through the flange transmission disk 103. By utilizing the meshing transmission relationship between the sun gear 101, the planetary gear 102, and the internal gear disk 1, speed reduction transmission is achieved.

[0028] After the inlet pipe 202 is connected to the external liquid supply equipment, the coolant flows into the spiral guide groove 201 on the inner wall of the internal gear disk 1 through the inlet pipe 202. The coolant flowing in the guide groove 201 absorbs the heat generated by the internal transmission components such as the internal gear disk 1, the sun gear 101, the planetary gear 102, the flange transmission disk 103, the power input shaft 105, and the power output shaft 104 during operation, and then flows out through the outlet pipe 205.

[0029] Meanwhile, the graphene thermally conductive sleeve 203, with its excellent thermal conductivity, conducts the heat from the internal gear disk 1 to the heat dissipation fins 204. The heat dissipation fins 204 have a large surface area, which increases the contact area with the air and dissipates the heat to the surrounding environment through natural air convection. The coolant circulation works in conjunction with the heat dissipation fins 204 to ensure the stability of the lubricating fluid inside the reducer. This solves the problem of heat accumulation caused by local overheating of the reducer, which leads to a decrease in lubricating fluid viscosity and damage to the effective lubricating film formed between the transmission components, resulting in increased wear of the components. It achieves the function of efficient heat management inside the reducer, ensuring that the lubricating fluid inside the reducer is always within a suitable operating temperature range and ensuring the stability of its lubrication performance.

[0030] Second implementation method:

[0031] Parts such as the power output shaft are easily damaged by friction and dust intrusion, reducing the reliability and working efficiency of the reducer;

[0032] refer to Figure 5 In the second embodiment of this utility model, a protective shell 4 is fixedly connected to the top of the internal gear disk 1, and the power output shaft 104 passes through the top of the protective shell 4. A wear-resistant and dustproof component 3 is provided on the top of the protective shell 4. The wear-resistant and dustproof component 3 includes a tungsten carbide wear-resistant layer 301 fixedly connected to the top of the protective shell 4. The tungsten carbide wear-resistant layer 301 is located outside the power output shaft 104. A rubber sealing layer 302 is provided outside the tungsten carbide wear-resistant layer 301, and a polyurethane buffer layer 303 is sleeved on the inner side of the rubber sealing layer 302. The inner wall of the polyurethane buffer layer 303 is fixedly connected to the outer side of the tungsten carbide wear-resistant layer 301.

[0033] The protective shell 4 protects the internal transmission components such as the sun gear 101, planetary gear 102, flange transmission disc 103, power input shaft 105, and power output shaft 104 from damage caused by external collisions or the intrusion of foreign objects.

[0034] In the wear-resistant and dustproof component 3, the tungsten carbide wear-resistant layer 301, due to its high hardness, can withstand the friction generated by the rotation of the top of the power output shaft 104, effectively preventing wear on the top of the power output shaft 104 and extending its service life. The rubber sealing layer 302 has good elasticity and sealing performance, closely adhering to the area around the power output shaft 104, blocking fine particles such as external dust from entering the reducer, and preventing dust from causing wear to the internal transmission components and affecting the transmission accuracy.

[0035] The polyurethane buffer layer 303 has good buffering performance. When an external impact acts on the top of the protective shell 4, the polyurethane buffer layer 303 can absorb and disperse the impact force, reducing the impact on the power output shaft 104 and other internal components. The tungsten carbide wear-resistant layer 301, the rubber sealing layer 302 and the polyurethane buffer layer 303 work together to achieve all-round protection for the power output shaft 104, solving the performance degradation and failure problems of the power output shaft 104 caused by wear, dust intrusion and external impact, and ensuring the stable operation of the planetary carrier of the reducer.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planetary gear carrier for a speed reducer, comprising an internal gear disc (1), characterized in that: The inner side of the internal gear disk (1) is provided with a power output shaft (104) through a meshing gear disk reduction assembly, and the power input end of the gear disk reduction assembly is fixedly connected to a power input shaft (105). It also includes a heat exchange mechanism (2), which includes a guide groove (201) equidistantly opened on the inner wall of the inner toothed disk (1), and the guide groove (201) has a spiral cross section. A through liquid inlet pipe (202) is fixedly connected to one side of the top of the inner toothed disk (1), and the bottom end of the liquid inlet pipe (202) is connected to the guide groove (201). A heat-conducting sleeve (203) is sleeved on the outside of the inner toothed disk (1), and a heat dissipation fin (204) is sleeved on the outside of the heat-conducting sleeve (203). A through liquid outlet pipe (205) is fixedly connected to one side of the bottom of the inner toothed disk (1), and the top of the liquid outlet pipe (205) is connected to the guide groove (201).

2. The planetary carrier of the speed reducer according to claim 1, characterized in that: The outer side of the heat-conducting sleeve (203) is adapted to the inner diameter of the heat dissipation fins (204), and the heat-conducting sleeve (203) is made of graphene material.

3. A planetary gear carrier for a speed reducer according to claim 1, characterized in that: The gear reducer assembly includes a sun gear (101) rotatably mounted inside the center of the inner gear disk (1). Multiple sets of planetary gears (102) are meshed on the outer side of the sun gear (101), and the planetary gears (102) mesh with the teeth of the inner wall of the inner gear disk (1). The top of the multiple sets of planetary gears (102) is fixedly connected to a flange drive disk (103) by a support rod. The top of the flange drive disk (103) is fixedly connected to the bottom of the power output shaft (104), and the bottom of the sun gear (101) is fixedly connected to the top of the power input shaft (105).

4. A planetary gear carrier for a speed reducer according to claim 3, characterized in that: The top of the internal gear disc (1) is fixed with a protective shell (4), and the power output shaft (104) passes through the top of the protective shell (4).

5. A planetary gear carrier for a speed reducer according to claim 4, characterized in that: The protective shell (4) is provided with a wear-resistant and dustproof component (3) on the top. The wear-resistant and dustproof component (3) includes a tungsten carbide wear-resistant layer (301) fixed to the top of the protective shell (4). The tungsten carbide wear-resistant layer (301) is located outside the power output shaft (104). A rubber sealing layer (302) is provided outside the tungsten carbide wear-resistant layer (301). A polyurethane buffer layer (303) is sleeved inside the rubber sealing layer (302). The inner wall of the polyurethane buffer layer (303) is fixedly connected to the outer side of the tungsten carbide wear-resistant layer (301).

6. A planetary gear carrier for a speed reducer according to claim 3, characterized in that: The power output shaft (104), power input shaft (105) are collinear with the axis of the sun gear (101), and both the power output shaft (104) and power input shaft (105) have protruding connecting parts on their outer sides.

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