A reducer with high sealing and high heat dissipation structure and its manufacturing method

Abstract

The present application relates to the technical field of reducers, and discloses a reducer with a high sealing and high heat dissipation structure and a manufacturing method. It comprises a housing, the bottom of which is connected to a fixed seat, an output shaft, a transmission shaft and an input shaft which are mutually transmission-connected are arranged in the housing, one end of the housing is connected to an end cover, an oil-cooling circulation mechanism is arranged on the housing, the oil-cooling circulation mechanism comprises an eccentric wheel, a circulation component and a cooling component, the eccentric wheel is coaxially arranged on the input shaft, the eccentric wheel provides power for the circulation component, the cooling component is arranged on the outer wall of the bottom of the housing and cools the lubricating oil transported by the circulation component; a sealing member is provided at the connection between the housing and the end cover, an elastic pressing member is crimped on the sealing member, and the elastic pressing member is slidingly arranged on a limiting convex ring on the inner wall of the housing. The present application realizes the circulation of lubricating oil inside and outside the housing through the oil-cooling circulation mechanism, thereby increasing heat dissipation; in terms of temperature, the internal pressure of the housing increases, the elastic pressing member is displaced, and the force acting on the sealing member is increased, thereby improving the sealing performance.

Description

Technical Field

[0001] The present application relates to the technical field of reducers, and in particular to a reducer with a high sealing and high heat dissipation structure and a manufacturing method thereof. Background Art

[0002] A reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is commonly used as a reduction gear between a prime mover and a working machine. It matches speeds and transmits torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The existing reducers are prone to generate a lot of heat when working for a long time. Due to the poor heat dissipation effect, the seals are aged faster, resulting in oil leakage in the reducer. Summary of the Invention

[0004] In order to improve the problem of poor heat dissipation effect of existing reducers, accelerated aging of seals, and oil leakage in reducers, the present application provides a reducer with a high sealing and high heat dissipation structure and a manufacturing method.

[0005] This application provides a reducer with a high sealing and high heat dissipation structure and a manufacturing method, which adopts the following technical solutions:

[0006] A reducer with a high sealing and high heat dissipation structure includes a box body, the bottom of the box body is connected to a fixed seat, an input shaft, a transmission shaft and an output shaft are rotatably arranged in the box body and are connected to each other, one end of the box body is connected to an end cover, and an oil cooling circulation mechanism is provided on the box body, and the oil cooling circulation mechanism includes an eccentric wheel, a circulation component and a cooling component, the eccentric wheel is coaxially arranged on the input shaft, the eccentric wheel provides power for the circulation component, and the cooling component is arranged on the outer wall of the bottom of the box body and cools the lubricating oil transported by the circulation component; a seal is provided at the connection between the box body and the end cover, an elastic pressing part is crimped on the seal, and the elastic pressing part is slidably embedded in a limiting convex ring provided on the inner wall of the box body.

[0007] By adopting the above technical solution, the input shaft drives the transmission shaft to rotate to achieve first-stage deceleration, and the transmission shaft drives the output shaft to rotate to achieve second-stage deceleration; the oil-cooling circulation mechanism uses the kinetic energy of the input shaft to drive the circulation of the lubricating oil, without the need for an additional power source, which is energy-saving and environmentally friendly; when the input shaft rotates, the circulation component is driven by the eccentric wheel to circulate the lubricating oil inside and outside the box, and the circulating oil is forced to be cooled by the cooling component, which significantly reduces the temperature inside the box, avoids the lubricating oil failure caused by overheating of the reducer, and oil leakage caused by aging of the seal, thereby improving the continuous load capacity; the elastic design of the elastic clamping part realizes adaptive crimping of the seal, compensates for the wear gap after long-term use, improves the sealing performance, and avoids leakage of lubricating oil.

[0008] Optionally, the circulation component includes an oil storage tank arranged on the outer wall of the box body, and an oil inlet chamber and an oil outlet chamber connected to the oil storage tank are arranged in the box body; the side walls of the oil inlet chamber or the oil outlet chamber are provided with an oil outlet and an oil inlet, and the oil outlet and the oil inlet are respectively provided with valve plate 1 and valve plate 2, and the oil inlet chamber and the oil outlet chamber are both provided with a sleeve on the side close to the eccentric wheel, and a piston rod is sealed and slidably connected in the sleeve, and a first elastic member is sleeved on the piston rod, and a roller is provided on the end of the piston rod close to the eccentric wheel, wherein the roller is always in contact with the eccentric wheel under the action of the first elastic member.

[0009] By adopting the above technical solution, under the action of the first elastic member, the roller on the piston rod is always in contact with the eccentric wheel. When the eccentric wheel rotates, the piston rod reciprocates. When the oil inlet chamber is taking in oil, valve plate one opens and valve plate two closes, and the oil inlet chamber sucks the lubricating oil in the oil storage tank. At this time, the oil outlet chamber discharges oil, and the lubricating oil in the oil outlet chamber is pumped into the oil storage tank; when the oil inlet chamber is discharging oil, valve plate one closes and valve plate two opens, and the lubricating oil in the oil inlet chamber is pumped out. At this time, the oil outlet chamber is taking in oil, and the lubricating oil at the bottom of the box body is absorbed into the oil outlet chamber, realizing the circulation of the lubricating oil, thereby reducing the temperature inside the box body.

[0010] Optionally, an oiling assembly is also provided in the box body, and the oiling assembly includes a conical oil-slinging plate coaxially arranged on the drive shaft, and a plurality of guide grooves are provided on the conical end face of the oil-slinging plate; a plurality of guide plates are provided on the inner top wall of the box body and above the drive shaft.

[0011] By adopting this technical solution, the drive shaft drives the oil flinger, which uses centrifugal force to fling the lubricating oil along the guide grooves. Some of the lubricating oil is directly flung onto the gear meshing surfaces on the input shaft and drive shaft, enhancing lubrication. Some of the lubricating oil is then diverted to the drive shaft via the guide plate, where it is dispersed across the guide plate, dissipating heat. The lubricating oil output from the oil inlet chamber is then transferred to the output shaft and drive shaft via the oiling assembly. The continuously refreshed low-temperature lubricating oil improves the oil film formation on the gear meshing surfaces, reducing friction, wear, and heat generation.

[0012] Optionally, the sealing component includes a sealing gasket arranged on the outside of the limiting convex ring, the inner ring of the sealing gasket is provided with a sealing sleeve, the inner side of the end cover is provided with a boss, and the side wall of the boss is provided with a connecting groove for the sealing ring to be embedded; the outer ring of the sealing gasket and the side close to the end cover are provided with a sealing ring, and the inner wall of the box body is provided with a snap-in groove for the sealing ring to be snapped into.

[0013] By adopting the above technical solution, the seal achieves multiple sealing effects through a multi-layer composite design, thereby improving the sealing performance.

[0014] Optionally, the inner ring of the limiting protrusion is provided with a guiding inclined surface, and a wedge-shaped gap is formed between the limiting protrusion and the end cover.

[0015] By adopting the above technical solution, when the end cover is installed, the axial displacement of the end cover generates a component force perpendicular to the guide slope on the sealing sleeve, thereby improving the sealing between the seal, the end cover and the box body.

[0016] Optionally, the elastic pressing member includes a pressure plate embedded in the limiting convex ring, and the pressure plate is pressed on the sealing member; a pressing unit is provided on the side of the pressure plate close to the limiting convex ring, and the pressing unit includes a pressing block, a slide is provided on the limiting convex ring, the pressing block is sealed and slidably connected in the slide, a sealing ring is provided between the pressing block and the inner wall of the slide, a plurality of guide rods are provided on the pressure plate, a guide sleeve is provided on the pressure plate to cooperate with the guide rod, the guide rod is slidably connected in the guide sleeve, a second elastic member is sleeved on the guide rod, and the two ends of the second elastic member are respectively connected to the pressing block and the pressure plate.

[0017] By adopting the above technical solution, when the temperature of the box rises, the pressure on the inner wall of the box increases, the pressing block is sealed and slidably set in the slide, the pressing block moves outward, the second elastic member is compressed, the second elastic member abuts against the pressure plate and generates a reaction force on the pressure plate, thereby increasing the extrusion force of the pressure plate on the seal and improving the sealing; when the temperature inside the box rises and the pressure increases, the pressing block is pushed to move outward, which can increase the internal space of the box and reduce the internal pressure of the box, thereby reducing the load on the box.

[0018] Optionally, the cooling component includes a cooling box arranged at the bottom of the box body, a refrigeration block is arranged in the cooling box, an oil pipe is folded and passed through the refrigeration block, and both ends of the oil pipe are respectively connected to the oil inlet pipe of the oil storage tank and the oil outlet of the oil outlet cavity.

[0019] By adopting the above technical solution, the cooling box is installed at the bottom of the box body, which can absorb the heat of the box body. At the same time, the refrigeration block cools the lubricating oil in the oil pipeline. The lubricating oil extracted from the box body is quickly cooled through the oil pipeline and then transported to the oil storage tank to cool the inside of the box body. By folding the oil pipeline, the heat dissipation area of ​​the oil pipeline is increased, so that the lubricating oil is fully cooled and can reach a lower temperature. A method for manufacturing a speed reducer with a high sealing and high heat dissipation structure includes the following steps:

[0020] S1: First check the integrity of each accessory;

[0021] S2: Install the fixing base at the bottom of the box, apply lubricating oil to the box, and coaxially install the oil-slinging plate on the end of the transmission shaft; coaxially set the eccentric wheel on the input shaft, and install the output shaft, transmission shaft and input shaft in the box in sequence;

[0022] S3: Install the oil inlet chamber and the oil outlet chamber on the inner wall of the box so that the roller at the end of the piston rod abuts against the eccentric wheel;

[0023] S4: Install the elastic pressing member in the slideway of the limiting convex ring, place the sealing member on the outside of the limiting convex ring, snap the sealing ring into the snap-fit ​​groove on the inner wall of the box, install the end cover and secure it with screws;

[0024] S5: Install the oil storage tank on the outer wall of the box body, install the cooling component on the bottom of the box body, and connect the oil inlet chamber, oil storage tank, cooling component and oil outlet chamber in sequence through the oil pipe;

[0025] S6: Inject lubricating oil into the oil tank and the housing.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The oil-cooling circulation mechanism utilizes the kinetic energy of the input shaft to drive the lubricating oil circulation, eliminating the need for an additional power source and maximizing energy conservation and environmental protection. When the input shaft rotates, the eccentric wheel drives the circulation assembly to circulate the lubricating oil inside and outside the housing. The cooling assembly also forcibly cools the circulating oil, significantly reducing the internal temperature of the housing. This prevents lubricating oil failure due to overheating of the reducer and oil leakage due to aging of the seals, thereby improving the continuous load capacity. The elastic design of the elastic compression member enables adaptive compression of the seals, compensating for wear gaps after long-term use, improving sealing performance, and preventing lubricating oil leakage.

[0028] 2. When the temperature of the box rises, the pressure on the inner wall of the box increases, the pressing block slides in the slide, the pressing block moves outward, the second elastic member is compressed, the second elastic member abuts against the pressure plate and generates a reaction force on the pressure plate, thereby increasing the extrusion force of the pressure plate on the seal and improving the sealing; when the temperature inside the box rises and the pressure increases, the pressing block is pushed to move outward, which can increase the internal space of the box and reduce the internal pressure of the box, thereby reducing the load on the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the reducer with a high sealing and high heat dissipation structure of the present application.

[0030] Figure 2 This is a cross-sectional view of the reducer with a high sealing and high heat dissipation structure of the present application.

[0031] Figure 3 It is a structural diagram of the circulation component, cooling component and oiling component of this application.

[0032] Figure 4 It is a structural diagram of the oil inlet chamber of this application.

[0033] Figure 5 It is a structural diagram of the oil-slinging pan of this application.

[0034] Figure 6 yes Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0035] Figure 7 It is an exploded view of the elastic pressing member and the limiting convex ring of the present application.

[0036] Figure numerals: 1, housing; 13, limiting convex ring; 131, slideway; 132, guide inclined surface; 14, input shaft; 15, transmission shaft; 16, output shaft; 17, clamping groove; 2, sealing member; 21, sealing gasket; 22, sealing sleeve; 23, sealing ring; 3, elastic pressing member; 31, pressing plate; 311, guide sleeve; 32, pressing unit; 321, pressing block; 322, guide rod; 323, sealing ring; 324, second elastic member; 4, circulation assembly; 41, oil storage tank; 411, oil outlet pipe ;412, oil inlet pipe;42, oil inlet chamber;421, oil inlet;422, oil outlet;423, valve plate one;424, valve plate two;425, sleeve;426, piston rod;427, roller;428, first elastic member;43, oil outlet chamber;5, cooling assembly;51, cooling box;52, refrigeration block;53, oil pipeline;6, fixing seat;7, eccentric wheel;8, oiling assembly;81, oil throwing tray;811, guide groove;82, guide plate;9, end cover;91, boss;911, connecting groove. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings.

[0038] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The embodiment of the present application discloses a reducer with a high sealing and high heat dissipation structure, referring to Figure 1 and Figure 2, including a box body 1, a fixed seat 6 is installed at the bottom of the box body 1, and an input shaft 14, a transmission shaft 15 and an output shaft 16 are rotatably connected in the box body 1 and meshed in sequence through gears. The input shaft 14 completes the first-stage deceleration by driving the transmission shaft 15 to rotate, and then the transmission shaft 15 drives the output shaft 16 to achieve the second-stage deceleration; the box body 1 is equipped with an end cover 9 at one end of the input shaft 14.

[0040] An oil cooling circulation mechanism is installed on the box body 1, and the oil cooling circulation mechanism includes an eccentric wheel 7, a circulation component 4 and a cooling component 5. The eccentric wheel 7 is coaxially fixed on the input shaft 14 and rotates coaxially with the input shaft 14. The eccentric wheel 7 provides power for the circulation component 4 to realize the circulation of lubricating oil inside and outside the box body 1. The cooling component 5 is fixedly installed on the outer wall of the bottom of the box body 1 and cools the lubricating oil transported by the circulation component 4; a seal 2 is installed between the box body 1 and the end cover 9, and an elastic pressing part 3 is crimped on the seal 2, and the elastic pressing part 3 is slidably embedded in the limiting convex ring 13 set on the inner wall of the box body 1.

[0041] The kinetic energy of the input shaft 14 is used to drive the oil cooling circulation system, and the circulation of lubricating oil can be achieved without external power, which has significant energy-saving and environmental protection advantages. During operation, the input shaft 14 provides power to the circulation component 4 by driving the coaxially arranged eccentric wheel 7, so that the lubricating oil inside and outside the box 1 forms a continuous circulation, and cooperates with the cooling component 5 to cool the lubricating oil, effectively controlling the internal temperature of the box 1. This solution can prevent problems such as lubricating oil performance degradation caused by overheating, aging of sealing materials, and oil leakage, thereby enhancing the continuous load capacity of the equipment. In addition, the elastic pressure member 3 is crimped on the seal 2, which can automatically compensate for the gap caused by long-term wear, maintain excellent sealing performance, and avoid the risk of lubricating oil leakage.

[0042] Reference Figure 1-Figure 3 The circulation component 4 includes an oil storage tank 41 fixed on the outer wall of the box body 1, and an oil inlet chamber 42 and an oil outlet chamber 43 installed in the box body 1 and connected to the oil storage tank 41. The oil outlet pipe 411 of the oil storage tank 41 is connected to the oil inlet chamber 42, and the oil inlet pipe 412 of the oil storage tank 41 is connected to the oil outlet chamber 43; the oil inlet chamber 42 is fixedly installed on the inner top wall of the box body 1, and the oil outlet chamber 43 is fixedly installed on the inner bottom wall of the box body 1.

[0043] Reference Figure 2 and Figure 4, an oil outlet 422 and an oil inlet 421 are provided on the side walls of the oil inlet chamber 42 and the oil outlet chamber 43. The inner side wall of the oil inlet chamber 42 or the oil outlet chamber 43 at the oil inlet 421 is hingedly connected to a valve plate 1 423, and the outer side wall of the oil inlet chamber 42 or the oil inlet chamber 42 at the oil outlet 422 is hingedly connected to a valve plate 2 424. A reset member is installed at the hinged end of the valve plate 1 423 or the valve plate 2 424. The reset member is a torsion spring, so that the valve plate 1 423 or the valve plate 2 424 always abuts against the oil inlet chamber 42 or the outlet in the absence of other external forces. The side wall of the oil chamber 43; the oil inlet chamber 42 and the oil outlet chamber 43 are both connected with a sleeve 425 on one side close to the input shaft 14, and the sleeve 425 is sealed and slidably connected with a piston rod 426. A first elastic member 428 is sleeved on the piston rod 426, and the two ends of the first elastic member 428 are respectively fixed to the flange of the piston rod 426 and the end of the sleeve 425. A roller 427 is installed at the end of the piston rod 426 close to the eccentric wheel 7, and the roller 427 is kept in constant contact with the eccentric wheel 7 under the action of the first elastic member 428.

[0044] The first elastic member 428 is used to ensure that the roller 427 on the piston rod 426 always keeps in contact with the eccentric wheel 7. When the eccentric wheel 7 rotates, the piston rod 426 is driven to make a reciprocating motion, thereby realizing the circulation and transportation of the lubricating oil. During the oil inlet stage, under the action of negative pressure, the oil inlet chamber 42 opens the valve plate 1 423 and closes the valve plate 2 424, thereby sucking the lubricating oil from the oil storage tank 41. At the same time, the oil outlet chamber 43 is pressurized, and the lubricating oil inside the oil outlet chamber 43 is discharged back into the oil storage tank 41. During the oil outlet stage, after the oil inlet chamber 42 is pressurized, the valve plate 1 423 is closed and the valve plate 2 424 is opened, and the lubricating oil in the oil inlet chamber 42 is pumped out. At the same time, negative pressure is formed in the oil outlet chamber 43, and the lubricating oil is sucked from the bottom of the box body 1, completing the cycle. The circulation component 4 continuously supplies low-temperature lubricating oil to the input shaft 14 and the transmission shaft 15, which not only optimizes the oil film quality of the gear meshing surface and reduces friction and wear, but also effectively controls the temperature rise inside the housing 1 and reduces heat accumulation, thereby improving the operating stability and service life of the reducer.

[0045] Reference Figure 2 、 Figure 3 and Figure 5 An oiling assembly 8 is also installed in the box body 1, and the oiling assembly 8 includes an oil-slinging plate 81 coaxially fixedly connected to the transmission shaft 15. The oil-slinging plate 81 has a conical disc-shaped structure, and a plurality of arc-shaped guide grooves 811 are fixedly connected to the conical end surface of the oil-slinging plate 81. The plurality of guide grooves 811 are evenly distributed along the circumference of the oil-slinging plate 81; it also includes a plurality of parallel guide plates 82, which are fixedly connected to the inner top wall of the box body 1. The guide plates 82 have a triangular structure. The guide plates 82 are located above the transmission shaft 15, and the guide plates 82 are aligned with the extension direction of the centrifugal oil-slinging trajectory of the conical surface of the oil-slinging plate 81.

[0046] The oil-slinging plate 81 is driven to rotate by the transmission shaft 15, and the directional distribution of the lubricating oil is achieved by using centrifugal force. The rotating oil-slinging plate 81 throws out the lubricating oil at high speed through the guide groove 811, and part of the lubricating oil is directly splashed onto the gear meshing surface of the input shaft 14 and the transmission shaft 15, forming a highly permeable oil film, which significantly improves the lubrication effect of the tooth surface; another part of the lubricating oil is captured by the guide plate 82 and guided to the transmission shaft 15. At the same time, the lubricating oil forms a thin layer flow on the surface of the guide plate 82, which effectively reduces the oil temperature by increasing the heat dissipation area, thereby achieving the dual functions of lubrication and heat dissipation; the lubricating oil pumped out of the oil inlet chamber 42 is delivered to the input shaft 14 and the transmission shaft 15 through the oiling component 8, and the continuously updated low-temperature lubricating oil improves the quality of oil film formation on the gear meshing surface, reduces the friction coefficient, and reduces wear and heat generation.

[0047] Reference Figure 2 and Figure 6 The sealing member 2 includes a sealing gasket 21 arranged parallel to the outer side of the limiting convex ring 13, the inner ring of the sealing gasket 21 is connected to the sealing sleeve 22, a boss 91 is provided on the inner side of the end cover 9, and a connecting groove 911 for the sealing ring 23 to be embedded is provided on the side wall of the boss 91; the outer ring of the sealing gasket 21 protrudes toward one side of the end cover 9 to form a sealing ring 23, and a clamping groove 17 for the sealing ring 23 to be clamped is provided on the inner wall of the box body 1.

[0048] Reference Figure 6 A guide slope 132 with a 15-30° angle is provided on the inner ring of the limiting protrusion 13 and on the end close to the end cover 9. A wedge-shaped gap is formed between the end cover 9 and the limiting protrusion 13. The sealing sleeve 22 is set to a wedge-shaped structure that adapts to the wedge-shaped gap. During the installation process, the axial displacement of the end cover 9 can be converted into a radial component force, thereby improving the sealing between the seal 2 and the limiting protrusion 13 and the end cover 9.

[0049] Reference Figure 6 and Figure 7 The elastic pressing member 3 includes an annular pressing plate 31. The pressing plate 31 is made of steel or aluminum alloy with high rigidity. The pressing plate 31 is embedded in the groove opened on the outside of the limiting convex ring 13. The pressing plate 31 is pressed on the sealing member 2. The pressing plate 31 is connected to a pressing unit 32 on the side close to the limiting convex ring 13. The pressing unit 32 includes a pressing block 321. A slideway 131 is opened on the limiting convex ring 13. The pressing block 321 is sealed and slidably connected to the slideway 131. The pressing block 32 1 is provided with a sealing ring 323, a plurality of guide rods 322 are provided on the pressing block 321, a plurality of guide sleeves 311 are fixedly connected to the pressing plate 31, and the guide sleeves 311 and the guide rods 322 are slidably matched. A sealing ring 23 is provided between the pressing block 321 and the inner wall of the slideway 131, and a second elastic member 324 is provided on the guide rod 322. The second elastic member 324 is a compression spring, and the two ends of the second elastic member 324 respectively abut against the pressing block 321 and the pressing plate 31.

[0050] When the temperature of the box body 1 rises and the internal pressure increases, the air pressure pushes the pressing block 321 to move outward along the slide 131, while compressing the second elastic member 324; at this time, the reaction force of the second elastic member 324 increases the clamping force on the sealing member 2 through the pressure plate 31, thereby realizing dynamic sealing compensation; at the same time, the outward movement of the pressing block 321 can moderately expand the effective volume inside the box body 1, and reduce the internal pressure increase through the volume compensation effect.

[0051] Reference Figure 2 and Figure 3 The cooling component 5 includes a cooling box 51 fixedly installed at the bottom of the box body 1, which can directly cool the box body 1; a refrigeration block 52 is installed in the cooling box 51, and an oil pipe 53 is provided in the refrigeration block 52. The oil pipe 53 is folded in a continuous serpentine path and passes through the inside of the refrigeration block 52. The serpentine-shaped oil pipe 53 maximizes the heat exchange area in a limited space and improves the heat exchange efficiency; the two ends of the oil pipe 53 are respectively connected to the oil inlet pipe 412 of the oil storage tank 41 and the oil outlet 422 of the oil outlet cavity 43.

[0052] The implementation principle of an ultra-quiet high-precision reducer in the embodiment of the present application is as follows: when in use, the input shaft 14, the transmission shaft 15 and the output shaft 16 are connected by gear meshing, the rotation of the input shaft 14 drives the eccentric wheel 7 to rotate, the piston rod 426 abuts against the surface of the eccentric wheel 7 under the action of the first elastic member 428, and when the eccentric wheel 7 rotates, the piston rod 426 is driven to reciprocate, and when the oil inlet chamber 42 is discharged, the oil is transported to the oil-slinging plate 81 through the oil outlet 422, and the lubricating oil is thrown to the input shaft 14 through the oil-slinging plate 81. On the oil inlet chamber 42, the lubricating oil in the oil storage tank 41 is sucked into the oil inlet chamber 42. At the same time, the lubricating oil in the oil outlet chamber 43 is first transported to the cooling component 5 for cooling, and then transported to the oil storage tank 41 through the oil pipe, so as to realize the circulation of the lubricating oil and cool the lubricating oil.

[0053] When the reducer works for a long time and the temperature inside the box body 1 rises, the internal pressure increases, and the pressing block 321 moves outward under the pressure, increasing the force on the pressure plate 31. The pressure plate 31 presses on the seal 2, making the seal 2 more tightly connected to the end cover 9 and the inner wall of the box body 1, thereby improving the sealing performance.

[0054] A method for manufacturing a speed reducer with a high sealing and high heat dissipation structure comprises the following steps:

[0055] S1: First check the integrity of each accessory;

[0056] S2: Install the fixing base 6 at the bottom of the housing 1, apply lubricating oil to the housing 1, and coaxially install the oil-slinging plate 81 at the end of the transmission shaft 15; coaxially set the eccentric wheel 7 on the input shaft 14, and install the output shaft 16, transmission shaft 15 and input shaft 14 in the housing 1 in sequence;

[0057] S3: Install the oil inlet chamber 42 and the oil outlet chamber 43 on the inner wall of the box body 1 so that the roller 427 at the end of the piston rod 426 abuts against the eccentric wheel 7;

[0058] S4: Install the elastic pressing member 3 in the slideway 131 of the limiting protruding ring 13, place the sealing member 2 on the outside of the limiting protruding ring 13, snap the sealing ring 23 into the snap-fit ​​groove 17 provided on the inner wall of the box body 1, install the end cover 9 and secure it with screws;

[0059] S5: Install the oil storage tank 41 on the outer wall of the box body 1, install the cooling assembly 5 on the bottom of the box body 1, and connect the oil inlet chamber 42, the oil storage tank 41, the cooling assembly 5 and the oil outlet chamber 43 in sequence through the oil pipe;

[0060] S6: Inject lubricating oil into the oil storage tank 41 and the housing 1.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A speed reducer with a high sealing and high heat dissipation structure, comprising a housing (1), a fixing seat (6) connected to the bottom of the housing (1), an input shaft (14), a transmission shaft (15) and an output shaft (16) rotatably arranged in the housing (1) and connected to each other, one end of the housing (1) is connected to an end cover (9), characterized in that: The box body (1) is provided with an oil cooling circulation mechanism, and the oil cooling circulation mechanism includes an eccentric wheel (7), a circulation component (4) and a cooling component (5). The eccentric wheel (7) is coaxially arranged on the input shaft (14). The eccentric wheel (7) provides power for the circulation component (4). The cooling component (5) is arranged on the outer wall of the bottom of the box body (1) and cools the lubricating oil transported by the circulation component (4). A sealing member (2) is provided at the connection between the box body (1) and the end cover (9). An elastic pressing member (3) is pressed onto the sealing member (2). The elastic pressing member (3) is slidably embedded in a limiting convex ring (13) provided on the inner wall of the box body (1). The elastic pressing member (3) includes a pressing plate (31) embedded in the limiting convex ring (13), and the pressing plate (31) is pressed on the sealing member (2); a pressing unit (32) is provided on the side of the pressing plate (31) close to the limiting convex ring (13), and the pressing unit (32) includes a pressing block (321), and a slideway (131) is provided on the limiting convex ring (13), and the pressing block (321) is sealed and slidably connected to the slideway (131), and the pressing block (321) is in contact with the slideway (131). A sealing ring (323) is provided between the inner walls of the channel (131), a plurality of guide rods (322) are provided on the pressure plate (31), a guide sleeve (311) matched with the guide rod (322) is provided on the pressure plate (31), the guide rod (322) is slidably connected in the guide sleeve (311), a second elastic member (324) is sleeved on the guide rod (322), and the two ends of the second elastic member (324) are respectively connected to the pressing block (321) and the pressure plate (31).

2. The reducer with a high sealing and high heat dissipation structure according to claim 1, characterized in that: The circulation assembly (4) comprises an oil storage tank (41) arranged on the outer wall of the box body (1); an oil inlet chamber (42) and an oil outlet chamber (43) in communication with the oil storage tank (41) are arranged in the box body (1); an oil outlet (422) and an oil inlet (421) are arranged on the side wall of the oil inlet chamber (42) or the oil outlet chamber (43); the oil outlet (422) and the oil inlet (421) are respectively provided with a valve plate 1 (423) and a valve plate 2 (424); the oil inlet chamber (42) and the oil outlet chamber (43) are respectively provided with a valve plate 1 (423) and a valve plate 2 (424). 2) and the oil outlet chamber (43) are both provided with a sleeve (425) on one side close to the eccentric wheel (7), the sleeve (425) is sealed and slidably connected with a piston rod (426), a first elastic member (428) is sleeved on the piston rod (426), and a roller (427) is provided on one end of the piston rod (426) close to the eccentric wheel (7), wherein the roller (427) is always in contact with the eccentric wheel (7) under the action of the first elastic member (428).

3. The reducer with a high sealing and high heat dissipation structure according to claim 2, characterized in that: An oiling assembly (8) is also provided in the housing (1), and the oiling assembly (8) comprises a conical oil-slinging plate (81) coaxially arranged on the transmission shaft (15), and a plurality of guide grooves (811) are provided on the conical end surface of the oil-slinging plate (81); and a plurality of guide plates (82) are provided on the inner top wall of the housing (1) and above the transmission shaft (15).

4. The reducer with a high sealing and high heat dissipation structure according to claim 1, characterized in that: The sealing member (2) comprises a sealing gasket (21) arranged on the outside of the limiting convex ring (13); a sealing sleeve (22) is provided on the inner ring of the sealing gasket (21); a boss (91) is provided on the inner side of the end cover (9); a connecting groove (911) for the sealing ring (23) to be embedded is provided on the side wall of the boss (91); a sealing ring (23) is provided on the outer ring of the sealing gasket (21) and on the side close to the end cover (9); and a clamping groove (17) for the sealing ring (23) to be clamped is provided on the inner wall of the box body (1).

5. The reducer with a high sealing and high heat dissipation structure according to claim 1, characterized in that: The inner ring of the limiting convex ring (13) is provided with a guiding inclined surface (132), and a wedge-shaped gap is formed between the limiting convex ring (13) and the end cover (9).

6. The speed reducer with a high sealing and high heat dissipation structure according to claim 2, characterized in that: The cooling assembly (5) comprises a cooling box (51) arranged at the bottom of the box body (1), a refrigeration block (52) being arranged in the cooling box (51), an oil delivery pipe (53) being folded in and passing through the refrigeration block (52), and two ends of the oil delivery pipe (53) being respectively connected to an oil inlet pipe (412) of the oil storage tank (41) and an oil outlet (422) of the oil outlet cavity (43).

7. The method for manufacturing a speed reducer with a high sealing and high heat dissipation structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: First check the integrity of each accessory; S2: Install the fixing seat (6) at the bottom of the box (1), apply lubricating oil to the box (1), and coaxially install the oil-slinging plate (81) on the end of the transmission shaft (15); coaxially set the eccentric wheel (7) on the input shaft (14), and sequentially install the output shaft (16), the transmission shaft (15) and the input shaft (14) in the box (1); S3: Install the oil inlet chamber (42) and the oil outlet chamber (43) on the inner wall of the box body (1), so that the roller (427) at the end of the piston rod (426) abuts against the eccentric wheel (7); S4: Install the elastic pressing member (3) in the slideway (131) of the limiting convex ring (13), place the sealing member (2) on the outside of the limiting convex ring (13), snap the sealing ring (23) into the snap-fit ​​groove (17) provided on the inner wall of the box body (1), install the end cover (9) and fix it with screws; S5: Install the oil storage tank (41) on the outer wall of the box body (1), install the cooling assembly (5) on the bottom of the box body (1), and connect the oil inlet chamber (42), the oil storage tank (41), the cooling assembly (5) and the oil outlet chamber (43) in sequence through the oil pipe; S6: inject lubricating oil into the oil storage tank (41) and the box body (1).

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