Rotary speed reducer shell

Abstract

The invention discloses a rotary speed reducer shell which comprises a shell body, a baffle is arranged on the shell body, a mounting cavity is formed between the baffle and the bottom of the shell body, and a planetary gear is stored in the mounting cavity; liquid guide channels are formed in the positions, between the baffle and the bottom of the shell, of the inner wall of the mounting cavity at intervals, and the liquid guide channels are arranged in the axis direction of the shell; the liquid guide channel comprises an upper flow guide surface, a middle connecting surface and a lower flow guide surface; and the upper flow guide surface is arranged between the baffle and the middle connecting surface. Through the arrangement of the liquid guide channel, the notch is formed in the inner wall face of the shell, the area of the inner wall face is increased, the heat dissipation space is increased, rapid heat dissipation is promoted, the problem that the internal temperature is too high due to poor heat dissipation is effectively solved, and the heat dissipation efficiency and the overall reliability of the rotary speed reducer are fundamentally improved.

Description

Technical Field

[0001] The invention relates to the field of reducers, and in particular to a rotary reducer housing. Background Art

[0002] The slewing reducer is an important component of construction machinery such as excavators. It is a vertical planetary reducer. The interior of the existing slewing reducer housing is generally a flat inner cavity surface without a gap. This structure cannot lubricate and dissipate heat well during operation, resulting in excessively high internal temperature during use, causing damage to parts and affecting their service life. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In order to solve the above problems, the present application provides a rotary reducer housing, comprising: A housing, wherein a baffle is disposed on the housing, and an installation cavity is provided between the baffle and the bottom of the housing, wherein the installation cavity is used to store planetary gears; a liquid guide channel is provided on the inner wall of the installation cavity between the baffle and the bottom of the housing, wherein the liquid guide channel is provided along the axis direction of the housing; The liquid guiding channel comprises an upper guiding surface, a middle connecting surface and a lower guiding surface; The upper guide surface is arranged between the baffle and the middle connecting surface, the lower guide surface is arranged between the middle connecting surface and the bottom of the shell, and the middle connecting surface protrudes toward the axis of the shell.

[0005] Optionally, a first opening is formed at a contact point between the upper guide surface and the baffle, and a second opening is formed at a contact point between the lower guide surface and the bottom of the shell, and the length of the first opening is smaller than that of the second opening.

[0006] Optionally, a plurality of first honeycomb grooves are formed on the upper guide surface, and a plurality of second honeycomb grooves are formed on the lower guide surface, and a diameter of the first honeycomb grooves is greater than a diameter of the second honeycomb grooves.

[0007] Optionally, a first sealing plate is provided on the first honeycomb groove, and the first sealing plate is used to seal the first honeycomb groove portion, and a second sealing plate is opened on the second honeycomb groove, and the second sealing plate is used to seal the second honeycomb groove portion.

[0008] Optionally, the first sealing plate and the second sealing plate are semicircular structures.

[0009] Optionally, a plurality of through holes are formed on the first sealing plate and the second sealing plate.

[0010] Optionally, a reinforcement cover is provided on the outer side of the shell, and a cooling chamber is provided between the reinforcement cover and the shell.

[0011] Optionally, a plurality of guide plates are arranged on the shell and located in the cooling chamber.

[0012] Optionally, the guide plate has a triangular cross-section.

[0013] Optionally, it also includes a water supply system, which is connected to the reinforced cover and is used to supply cooling medium into the cooling chamber.

[0014] Beneficial Effects In the embodiment of the present invention, a rotary reducer housing is provided, in which splashed oil can slide from the upper guide surface to the middle connecting surface, and then drip onto the gear meshing part, and the lubricating oil on the lower guide surface can also quickly flow down from the bottom and drip onto the gear core part, thereby improving the lubrication effect during use. Moreover, through the setting of the liquid guide channel, a notch is formed on the inner wall surface of the housing, increasing the inner wall surface area, increasing the heat dissipation space, and promoting the rapid dissipation of heat, effectively solving the problem of excessive internal temperature caused by poor heat dissipation, and fundamentally improving the heat dissipation efficiency and overall reliability of the rotary reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the rotary reducer housing of the present invention; Figure 2 The rotary reducer housing of the present invention Figure 1 Partially enlarged structural diagram; Figure 3 It is a cross-sectional structural diagram of the housing of the rotary reducer of the present invention.

[0016] [Description of Reference Numerals] 1. Shell; 2. Baffle; 3. Liquid guide channel; 31. Upper guide surface; 32. Middle connecting surface; 33. Lower guide surface; 4. First opening; 5. Second opening; 6. First honeycomb groove; 7. Second honeycomb groove; 8. First sealing plate; 9. Second sealing plate; 10. Reinforced cover; 11. Guide plate. DETAILED DESCRIPTION

[0017] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0018] See also Figure 1-3 As shown, according to the present application, a rotary reducer housing includes: A housing 1, wherein a baffle plate 2 is disposed on the housing 1, and an installation cavity is provided between the baffle plate 2 and the bottom of the housing 1, wherein the installation cavity is used to store planetary gears; a liquid guide channel 3 is provided on the inner wall of the installation cavity between the baffle plate 2 and the bottom of the housing 1, and the liquid guide channel 3 is provided along the axial direction of the housing 1; The liquid guiding channel 3 includes an upper guiding surface 31, a middle connecting surface 32 and a lower guiding surface 33; The upper guide surface 31 is disposed between the baffle 2 and the middle connecting surface 32 , the lower guide surface 33 is disposed between the middle connecting surface 32 and the bottom of the shell 1 , and the middle connecting surface 32 protrudes toward the axis of the shell 1 .

[0019] Specifically, the housing 1, as the bearing component of the entire slewing reducer, has sufficient strength and rigidity to ensure the stable operation and protection of the internal precision components. A baffle 2 is provided on the housing 1, and the installation cavity between the baffle 2 and the bottom of the housing 1 becomes the precise placement space for the planetary gears, ensuring the correct meshing and stable transmission of the planetary gears during high-speed operation, and avoiding additional friction and wear caused by improper installation.

[0020] On the inner wall of the mounting cavity between the baffle 2 and the bottom of the housing 1, a fluid guide channel 3 is provided along the axial direction of the housing 1. The fluid guide channel 3 is composed of an upper guide surface 31, a middle connecting surface 32 and a lower guide surface 33. The upper guide surface 31 is located between the baffle 2 and the middle connecting surface 32, and both are curved surfaces so that the splashed oil can flow out from the middle connecting surface 32 and the lower guide surface 33 respectively when the planetary gear is running, and lubricate the meshing surface of the sun gear and the meshing surface of the inner gear ring respectively, ensuring that the gears always maintain a good lubrication state under high-speed and heavy-load conditions, effectively reducing the friction coefficient, reducing the heat generated by friction, thereby reducing the risk of parts wear and extending the service life of parts.

[0021] The middle connecting surface 32 protrudes toward the axis of the housing 1, further optimizing the flow performance of the liquid guiding channel 3. The protruding shape can effectively change the flow rate of the lubricating oil, and realize the segmentation of the upper guide surface 31 and the lower guide surface 33, so that the splashing oil can slide from the upper guide surface 31 to the middle connecting surface 32, and then drip onto the gear meshing part. The lubricating oil on the lower guide surface 33 can also flow down quickly from the bottom and drip onto the gear core part, improving the lubrication effect during use. In addition, through the setting of the liquid guiding channel 3, a notch is formed on the inner wall surface of the housing 1, increasing the inner wall surface area, increasing the heat dissipation space, and promoting the rapid dissipation of heat, effectively solving the problem of excessive internal temperature caused by poor heat dissipation, and fundamentally improving the heat dissipation efficiency and overall reliability of the rotary reducer.

[0022] A first opening 4 is formed at the contact point between the upper guide surface 31 and the baffle 2 , and a second opening 5 is formed at the contact point between the lower guide surface 33 and the bottom of the shell 1 . The length of the first opening 4 is smaller than that of the second opening 5 .

[0023] Specifically, by setting the first opening 4 and the second opening 5, the guide channel is a structure that is small at the top and large at the bottom, and the depth of the upper guide surface 31 on the inner wall of the shell 1 is greater than the depth of the lower guide surface 33 on the inner wall of the shell 1, thereby increasing the inner wall area of ​​the shell 1 and improving the heat dissipation efficiency. At the same time, the larger depth of the upper guide surface 31 can better capture the lubricating oil thrown onto the inner wall. When the lubricating oil is thrown onto the upper guide surface 31, the upper guide surface 31 can make the lubricating liquid flow downward along its surface. Due to the structure of the guide channel that is small at the top and large at the bottom, the oil droplets will gradually gather in the process of flowing downward.

[0024] The lower guide surface 33 is relatively shallow, which can reduce the adhesion between the oil droplets and the wall when guiding the oil droplets to fall. Under the action of gravity, the oil droplets can more easily and quickly drip onto the parts that need lubrication along the lower guide surface 33, ensuring that key parts such as gears can be lubricated in time and reducing wear caused by insufficient lubrication.

[0025] The upper guide surface 31 is provided with a plurality of first honeycomb grooves 6 , and the lower guide surface 33 is provided with a plurality of second honeycomb grooves 7 . The diameter of the first honeycomb grooves 6 is greater than that of the second honeycomb grooves 7 .

[0026] Specifically, the opening of the first honeycomb groove 6 on the upper guide surface 31 can further increase the area of ​​the upper guide surface 31, thereby improving the heat dissipation efficiency inside the shell 1, and in the process of the lubricating oil sliding down on the upper guide surface 31, it will pass through multiple first honeycomb grooves 6, which can also improve its flow path, increase the contact area and contact time between the lubricating oil and the upper guide surface 31, thereby promoting the heat dissipation of the lubricating oil. Correspondingly, the second honeycomb groove 7 on the lower guide surface 33 has a smaller diameter. It also increases the area of ​​the lower guide surface 33, improves the heat dissipation efficiency of the shell 1 and increases the flow path of the lubricating oil on the lower guide surface 33, promoting the heat dissipation of the lubricating oil.

[0027] A first sealing plate 8 is provided on the first honeycomb groove 6 , and the first sealing plate 8 is used to partially seal the first honeycomb groove 6 . A second sealing plate 9 is opened on the second honeycomb groove 7 , and the second sealing plate 9 is used to partially seal the second honeycomb groove 7 .

[0028] The first sealing plate 8 and the second sealing plate 9 are semicircular structures.

[0029] The first sealing plate 8 and the second sealing plate 9 are provided with a plurality of through holes.

[0030] Specifically, the first sealing plate 8 partially seals the first honeycomb groove 6, so that when the lubricating oil flows downward through the upper guide surface 31, it will enter the first honeycomb groove 6 and be discharged through the through hole. The second sealing plate 9 partially seals the second honeycomb groove 7. Similarly, the lubricating oil can enter the second honeycomb groove 7 and be discharged through the through hole, and then drip onto the meshing surface of the sun gear and the meshing surface of the inner ring gear. It can lubricate the meshing surface of the sun gear and the meshing surface of the inner ring gear while filtering the lubricating oil, thereby reducing the large particles in the lubricating oil from entering the meshing surfaces again, causing damage to the compressor, and increasing its service life.

[0031] A reinforcement cover 10 is disposed outside the shell 1 , and a cooling chamber is defined between the reinforcement cover 10 and the shell 1 .

[0032] Specifically, the reinforcement cover 10 is made of high-strength and high-rigidity materials, such as high-quality alloy steel or aluminum alloy, and is tightly attached to the outer side of the housing 1, providing additional structural support and protection for the entire slewing reducer. In the complex and changeable working environment of engineering machinery, such as the excavator may be subjected to various impact forces and vibrations during excavation operations, the reinforcement cover 10 can effectively disperse and withstand these external forces, prevent the housing 1 from being deformed or damaged due to external forces, thereby ensuring the normal operation and meshing accuracy of precision components such as internal planetary gears, improving the reliability and stability of the slewing reducer, and extending its service life.

[0033] The cooling chamber opened between the reinforcing cover 10 and the shell 1 creates space conditions for the introduction of cooling medium. For example, the heat dissipated by the shell 1 can be taken away by circulating coolant or air. When the rotary reducer generates heat after a long period of operation, the heat will be transferred from the shell 1 to the inner wall of the cooling chamber, and the flow of the cooling medium in the cooling chamber can quickly absorb and take away the heat, thereby effectively reducing the temperature of the shell 1 and avoiding problems such as thermal expansion of parts and failure of lubricating oil caused by excessive internal temperature. At the same time, by controlling the shape and size of the chamber and the flow rate and direction of the cooling medium, the heat can be dissipated more evenly and quickly, further improving the heat dissipation effect, ensuring that the rotary reducer can work stably within an appropriate temperature range, improving its working performance and reliability, and meeting the strict requirements of engineering machinery such as excavators on the heat dissipation performance of rotary reducers under high-intensity working conditions.

[0034] A plurality of guide plates 11 are arranged on the housing 1 and located in the cooling chamber.

[0035] Specifically, the guide plates 11 are evenly distributed on the shell 1 and located in the cooling chamber. They are usually made of metal materials with good thermal conductivity, such as aluminum alloy or copper alloy, to ensure rapid heat conduction and assist the heat dissipation process.

[0036] When the cooling medium enters the cooling chamber, the guide plate 11 will regularize and divert the originally disordered air or liquid flow. For example, when air is used as the cooling medium, the guide plate 11 can evenly disperse the air to various areas of the cooling chamber so that the air can fully contact the surface of the shell 1, thereby enhancing the heat exchange efficiency. In this way, heat can be transferred from the shell 1 to the cooling medium more quickly and taken out of the cooling chamber, effectively reducing the temperature of the shell 1 and avoiding the performance degradation or failure of the rotary reducer due to local overheating.

[0037] At the same time, the guide plate 11 can also increase the residence time and turbulence of the cooling medium in the cooling chamber to a certain extent. For the coolant, the guide plate 11 allows the coolant to form a complex flow path in the cooling chamber, prolonging the contact time between the coolant and the shell 1, so that the heat can be more fully absorbed and taken away.

[0038] The cross section of the guide plate 11 is a triangular structure.

[0039] Specifically, the guide plate 11 with a triangular cross-section can effectively guide the flow direction of the cooling medium and change its flow rate in the cooling chamber. When the cooling medium enters the cooling chamber, it first impacts the triangular surface of the guide plate 11. Since the hypotenuse and the base of the triangle form a certain angle, the cooling medium is rapidly diverted along the hypotenuse, with one part of the cooling medium flowing along one side of the guide plate 11 and the other part flowing along the other side, thereby evenly dispersing the cooling medium to all corners of the cooling chamber, avoiding the situation where the cooling medium accumulates in some areas and does not flow enough in other areas, ensuring that the entire surface of the shell 1 can be fully cooled, and greatly improving the heat exchange efficiency between the cooling medium and the shell 1. The guide plate 11 with a triangular structure increases the contact area between the cooling medium and the guide plate 11 and the shell 1, thereby improving the heat exchange efficiency.

[0040] Moreover, the triangular cross-section guide plate 11 also has certain advantages in terms of structural strength. During the operation of the engineering machinery, vibration and impact may occur. The triangular structure can better withstand these external forces and keep the shape and position of the guide plate 11 stable, thereby ensuring that its guiding effect on the cooling medium is always reliable, providing a solid guarantee for the stable heat dissipation of the rotary reducer.

[0041] It also includes a water supply system, which is connected to the reinforcement cover 10 and is used to supply cooling medium into the cooling chamber.

[0042] Specifically, the water supply system is connected to the reinforced cover 10, and the connection parts thereof adopt connection parts with good sealing performance and high temperature and high pressure resistance, so as to ensure that the cooling medium will not leak during the transportation process, thereby ensuring the safety and reliability of the entire heat dissipation system. The water supply system is equipped with a precise flow control device and a pressure regulating device, which can adjust the cooling medium input amount and pressure in real time and accurately according to the actual working load of the rotary reducer, the ambient temperature and the data fed back by the internal temperature sensor, so as to meet the heat dissipation requirements under different working conditions.

[0043] When the slewing reducer is in high-load operation and the internal temperature rises rapidly, the water supply system will automatically increase the flow and pressure of the cooling medium, so that more cooling medium can quickly enter the cooling chamber. In the cooling chamber, under the guidance of the guide plate 11, the cooling medium efficiently absorbs the heat emitted by the shell 1 and takes it out of the cooling chamber. The heat is dissipated to the surrounding environment through the subsequent heat dissipation device (such as a radiator), thereby effectively reducing the internal temperature of the slewing reducer, avoiding problems such as damage to parts and failure of lubricating oil caused by overheating, ensuring that the various performance indicators of the slewing reducer are stable and reliable, and extending its service life and maintenance cycle.

[0044] At the same time, the water supply system also has good compatibility and adaptability. It can select different types of cooling media, such as water, ethylene glycol aqueous solution or special coolant, according to the actual use scenarios and needs, to adapt to different ambient temperatures and working conditions. For example, in a cold winter environment, you can use a coolant with antifreeze properties to prevent the cooling medium from freezing at low temperatures and damaging the cooling system and the rotary reducer; while under high temperature and high load working conditions, you can choose a cooling medium with a larger specific heat capacity and better heat dissipation performance to enhance the heat dissipation effect.

[0045] Through the water supply system connected to the reinforced cover 10, a stable and efficient cooling medium supply is provided for the cooling chamber of the rotary reducer, thereby achieving precise control of the temperature of the rotary reducer and efficient heat dissipation, greatly improving the reliability and stability of the rotary reducer under various complex working conditions.

[0046] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rotary reducer housing, characterized in that: include: A shell (1), wherein a baffle (2) is arranged on the shell (1), and an installation cavity is provided between the baffle (2) and the bottom of the shell (1), and the installation cavity is used to store planetary gears; a liquid guide channel (3) is provided on the inner wall of the installation cavity between the baffle (2) and the bottom of the shell (1), and the liquid guide channel (3) is arranged along the axial direction of the shell (1); The liquid guiding channel (3) comprises an upper guiding surface (31), a middle connecting surface (32) and a lower guiding surface (33); The upper guide surface (31) is arranged between the baffle (2) and the middle connecting surface (32), the lower guide surface (33) is arranged between the middle connecting surface (32) and the bottom of the shell (1), and the middle connecting surface (32) protrudes toward the axis of the shell (1).

2. The rotary reducer housing according to claim 1, characterized in that: A first opening (4) is provided at the contact point between the upper guide surface (31) and the baffle (2), and a second opening (5) is provided at the contact point between the lower guide surface (33) and the bottom of the shell (1), wherein the length of the first opening (4) is smaller than that of the second opening (5).

3. The rotary reducer housing according to claim 2, characterized in that: The upper guide surface (31) is provided with a plurality of first honeycomb grooves (6), the lower guide surface (33) is provided with a plurality of second honeycomb grooves (7), and the diameter of the first honeycomb grooves (6) is greater than the diameter of the second honeycomb grooves (7).

4. The rotary reducer housing according to claim 3, characterized in that: The first honeycomb groove (6) is provided with a first sealing plate (8), and the first sealing plate (8) is used to seal part of the first honeycomb groove (6). The second honeycomb groove (7) is provided with a second sealing plate (9), and the second sealing plate (9) is used to seal part of the second honeycomb groove (7).

5. The rotary reducer housing according to claim 4, characterized in that: The first sealing plate (8) and the second sealing plate (9) are semicircular structures.

6. The rotary reducer housing according to claim 5, characterized in that: A plurality of through holes are provided on the first sealing plate (8) and the second sealing plate (9).

7. The rotary reducer housing according to claim 6, characterized in that: A reinforcement cover (10) is arranged on the outside of the shell (1), and a cooling chamber is provided between the reinforcement cover (10) and the shell (1).

8. The rotary reducer housing according to claim 7, characterized in that: A plurality of guide plates (11) are arranged on the shell (1) and located in the cooling chamber.

9. The rotary reducer housing according to claim 6, characterized in that: The guide plate (11) has a triangular cross-section.

10. The rotary reducer housing according to claim 7, characterized in that: It also comprises a water supply system, which is connected to the reinforcement cover (10) and is used to supply cooling medium into the cooling chamber.

Images