Fully-sealed high-shock-resistance variable-load three-ring speed reducing mechanism

Abstract

The invention discloses a full-sealed high-shock-resistance variable-load three-ring speed reducing mechanism, and relates to the technical field of industrial transmission, an upper sealing protection shell is arranged at the top of a lower sealing bearing shell, the upper sealing protection shell is in sealing connection through bolts, and an elastic sealing flange block and a sealing filler strip in a mounting groove are in close contact with the bottom end of the upper shell to enhance sealing; the two ends of an internal three-ring type transmission gear ring plate are connected with the input transmission shaft respectively, the middle part of the internal three-ring type transmission gear ring plate is in transmission through an anti-variable-load planetary gear ring on the output shaft, and flange plates are fixed on the two side walls of the internal three-ring type transmission gear ring plate; main and auxiliary anti-seismic buffer assemblies are arranged between the plates to cope with variable loads; the main assemblies are symmetrically distributed, and transverse impact is buffered through inclined damping blocks, buffer wheels, movable push rods, springs and rubber sleeves; the auxiliary assembly comprises symmetrical damping strips and connected semi-conical blocks, springs are arranged between the symmetrical damping strips and the connected semi-conical blocks and make contact with sealing rubber strips on an arc-shaped bearing plate in the shell, multidirectional impact is absorbed, and high anti-seismic performance is cooperatively achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial transmission, in particular to a fully sealed, highly shock-resistant, variable-load three-ring reduction mechanism. Background Art

[0002] In the industrial transmission sector, three-ring reduction mechanisms are widely used in metallurgy, mining, and engineering machinery due to their compact structure and high transmission ratio. However, existing three-ring reduction mechanisms still have significant technical shortcomings in terms of seismic resistance and sealing protection under variable loads and complex operating conditions, making it difficult to meet the high-precision and high-stability operating requirements.

[0003] In terms of sealing performance, traditional three-ring reduction mechanisms often use a single gasket or direct bolt compression at the housing connection. Under long-term variable load vibration, the seals are prone to aging and loosening, allowing external impurities such as dust and moisture to enter the internal transmission system. Internal lubricating oil is also prone to leakage, which not only exacerbates component wear but also reduces the transmission efficiency and service life of the mechanism. Furthermore, the oil injection structure design of some mechanisms is unreasonable, which easily damages the sealing environment during the oil injection process, further affecting the sealing reliability.

[0004] In terms of seismic buffering, existing three-ring reduction mechanisms often feature only simple spring damping devices, primarily designed to cushion impacts in a single direction. However, in actual operating conditions, variable loads generate combined lateral, longitudinal, and multi-directional impacts, making it difficult for traditional seismic structures to fully offset these vibrations. This can lead to fluctuations in the meshing clearances between transmission components and even failures such as tooth bonding and fracture. Especially when the three sets of transmission gear ring plates operate in concert, the stress concentration caused by vibration can easily loosen the joints, seriously compromising the mechanism's operational stability.

[0005] To address adaptability to variable loads, traditional three-ring reduction mechanisms often utilize a single input shaft design, resulting in a single power transmission path. Fluctuations in input load can easily lead to uneven force distribution within the transmission system, with localized components experiencing excessive torque. This not only causes significant fluctuations in power transmission efficiency but also accelerates fatigue damage to key components such as gears and shafts, limiting the mechanism's applicability under variable load conditions. Furthermore, the transmission structure of existing mechanisms has a weak ability to buffer and adjust variable loads, making it difficult to adjust transmission stiffness in real time based on load changes, further reducing their adaptability to complex operating conditions.

[0006] Therefore, developing a three-ring reduction mechanism that can achieve fully sealed protection, has all-round anti-seismic and buffering capabilities, and can efficiently adapt to variable loads has become a key requirement for solving the pain points of existing technologies and improving the performance of industrial transmission systems. Summary of the Invention

[0007] The purpose of the present invention is to provide a fully sealed, highly seismic-resistant and variable-load three-ring reduction mechanism to solve the problems of the existing three-ring reduction mechanism having a relatively simple sealing structure design, lacking effective seismic buffer components, and having a single input shaft as the power input method.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fully sealed, highly seismic-resistant, variable-load three-ring speed reducer mechanism, comprising a lower sealed bearing housing, a main seismic-resistant buffer assembly, and a secondary seismic-resistant buffer assembly; An upper sealing protective shell is provided on the top of the lower sealing bearing shell, and the lower sealing bearing shell and the upper sealing protective shell are sealed and connected by bolts; a three-ring transmission gear ring plate is provided inside the lower sealing bearing shell, and one end of the three groups of three-ring transmission gear ring plates is provided with a first variable load input transmission shaft, and the end of the three groups of three-ring transmission gear ring plates away from the first variable load input transmission shaft is provided with a second variable load input transmission shaft, and the middle part of the three groups of three-ring transmission gear ring plates is provided with an output transmission shaft, and the output transmission shaft is provided with an anti-load planetary gear ring; a main anti-seismic buffer assembly and a secondary anti-seismic buffer assembly for coping with variable loads are provided between the three groups of three-ring transmission gear ring plates; an oil injection channel tube is provided on the top of the anti-load planetary gear ring, and a sealing cover is provided on the top of the oil injection channel tube, and the oil injection channel tube is sealed and connected to the upper sealing protective shell.

[0009] Preferably, both side walls of the three groups of three-ring transmission gear ring plates are fixedly connected with connecting flange plates.

[0010] Preferably, the main anti-seismic buffer assembly includes a first inclined shock-absorbing block, a buffer rolling wheel, a second inclined shock-absorbing block, a movable push rod, a main buffer spring, and a rubber buffer sleeve; the first inclined shock-absorbing block is fixedly connected to the side wall of the connecting flange plate away from the three-ring transmission gear ring plate, the buffer rolling wheel is rotatably connected to the side wall of the inclined part of the first inclined shock-absorbing block, the movable push rod is slidably connected to the two side walls of the lower sealed bearing shell, the second inclined shock-absorbing block is fixedly connected to the side wall of the movable push rod, the side wall of the inclined part of the second inclined shock-absorbing block contacts the outer wall of the buffer rolling wheel, the main buffer spring is fixedly connected between the side wall of the second inclined shock-absorbing block and the inner wall of the lower sealed bearing shell, and the main buffer spring is movably sleeved on the outer wall of the movable push rod.

[0011] Preferably, there are two main anti-vibration buffer components, which are symmetrically distributed on both sides of the three-ring transmission gear ring plate.

[0012] Preferably, the end of the movable push rod away from the second inclined shock-absorbing block is fixedly connected to a buffer block, the outer wall of the buffer block is provided with a rubber buffer sleeve, and the outer wall of the rubber buffer sleeve is gap-matched with the inner wall of the lower sealing bearing shell.

[0013] Preferably, the auxiliary anti-seismic buffer assembly includes a shock-absorbing movable bar, a semi-conical anti-seismic block, a secondary buffer spring, an arc-shaped anti-seismic pressure plate, and a sealing rubber strip; the shock-absorbing movable bar is movably hinged on the side wall of the connecting flange plate away from the three-ring transmission gear ring plate, and two shock-absorbing movable bars are provided, which are symmetrically distributed, and the semi-conical anti-seismic block is fixedly connected to the side wall of the shock-absorbing movable bar away from the connecting flange plate, and the auxiliary buffer spring is fixedly connected between the two semi-conical anti-seismic blocks, and the arc-shaped anti-seismic pressure plate is fixedly connected to the inner wall of the lower sealing bearing shell, and there are two arc-shaped anti-seismic pressure plates corresponding to the positions of the semi-conical anti-seismic blocks, and the sealing rubber strip is fixedly connected to the side wall of the arc-shaped anti-seismic pressure plate away from one end of the lower sealing bearing shell, and the sealing rubber strip is in close contact with the outer wall of the semi-conical anti-seismic block.

[0014] Preferably, sealing shaft rings are provided at the extensions of the first variable load input transmission shaft and the second variable load input transmission shaft to the outside of the lower seal bearing housing.

[0015] Preferably, a mounting groove is provided on the top of the lower sealing bearing shell, and the bottom of the upper sealing protective shell matches the mounting groove; elastic sealing flange blocks are fixedly connected to both sides of the inner wall of the mounting groove, and a sealing gasket strip is fixedly connected to the inner bottom wall of the mounting groove, and the bottom end of the upper sealing protective shell is in close contact with the elastic sealing flange block and the sealing gasket strip.

[0016] Preferably, an oil injection channel tube is provided on the top of the anti-variable load planetary gear ring, a sealing cover is provided on the top of the oil injection channel tube, and the oil injection channel tube is sealed to the upper sealing protection shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In the existing technology, when a single input shaft design faces variable loads, the power is often concentrated on a few transmission components, which can easily lead to problems such as excessive local stress in the gear ring plate and transmission shaft, and then cause premature wear of components, large fluctuations in transmission efficiency, etc., which seriously limits the application of the mechanism under variable load conditions. This mechanism adopts a structure in which dual input transmission shafts are symmetrically connected to the two ends of three groups of three-ring transmission gear ring plates, and the precise engagement of the middle part of the gear ring plate with the anti-variable load planetary gear ring can evenly distribute the variable load to all transmission components, greatly reducing the local stress concentration phenomenon. This design not only makes the power transmission under variable load more stable, reduces the efficiency loss caused by uneven force, but also broadens the adaptability of the mechanism to variable loads of different amplitudes and frequencies, and has a wider range of applicable scenarios.

[0018] Most of the anti-seismic components in the existing technology are designed for single-direction buffering, for example, they can only cope with lateral or longitudinal impacts, while the impacts caused by variable loads are often multi-directional and complex. This leads to poor anti-seismic effect of traditional mechanisms when facing such impacts. The internal transmission components of the mechanism are prone to problems such as increased meshing clearance and loose connections due to continuous vibration, which eventually lead to vibration failure. The main anti-seismic buffer component of this mechanism can efficiently absorb and resolve lateral impacts through the synergistic effect of the first inclined shock-absorbing block, the buffer rolling wheel, the second inclined shock-absorbing block, the main buffer spring and the rubber buffer sleeve; the auxiliary anti-seismic buffer component relies on the cooperation of the shock-absorbing movable bar, the semi-conical anti-seismic block, the auxiliary buffer spring, the arc-shaped anti-seismic pressure plate and the sealing rubber strip to effectively cope with longitudinal and other multi-directional impacts. The three-dimensional anti-seismic effect formed by the cooperation of the main anti-seismic buffer component and the auxiliary anti-seismic buffer component can comprehensively offset the complex impacts brought by the variable load, making the operation stability of the mechanism significantly better than the existing technology.

[0019] The sealing structure of the existing technology is usually relatively simple. Under the continuous vibration generated by the operation of the mechanism, the seals at the shell connection and the shaft extension are prone to aging and loosening, resulting in the invasion of external impurities such as dust and water vapor into the interior. At the same time, the internal lubricating oil is also prone to leakage, which will not only aggravate the wear of components, but also increase the probability of failure. Later maintenance requires frequent replacement of seals and replenishment of lubricating oil, which is costly. This mechanism forms a double seal through the elastic sealing flange block and the sealing gasket in the mounting groove of the lower sealing bearing shell, and cooperates with the sealing shaft ring at the extension of the input transmission shaft and the sealing connection of the oil filling channel tube and the upper sealing protective shell to construct a full-sealed environment in all directions, effectively blocking the invasion of external impurities and the leakage of internal lubricating oil. In addition, the design of the oil filling channel tube makes it convenient to inject lubricating oil into parts such as the anti-variable load planetary gear ring, without the need to disassemble the shell, reducing the damage to the sealing structure caused by maintenance operations. Compared with the existing technology, the sealing reliability of this mechanism is greatly improved, and it can operate stably for a long time in harsh environments such as dust and humidity, and the maintenance frequency and cost are significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the lower sealed bearing housing of the present invention; Figure 4 This is a schematic diagram of the further internal structure of the lower sealed bearing housing of the present invention; Figure 5 This is a schematic diagram of the partially enlarged structure of point A of the present invention; Figure 6 It is a schematic structural diagram of the lower sealed bearing shell and the upper sealed protective shell of the present invention.

[0021] In the figure: 1. Lower sealing bearing shell; 2. Upper sealing protection shell; 3. Oil filling channel tube; 4. Output transmission shaft; 5. First variable load input transmission shaft; 6. Second variable load input transmission shaft; 7. Three-ring transmission gear ring plate; 8. Anti-variable load planetary gear ring; 9. Mounting groove; 10. Connecting flange plate; 11. Main anti-seismic buffer assembly; 111. First inclined shock-absorbing block; 112. Buffer rolling wheel; 113. Second inclined shock-absorbing block; 114. Movable push rod; 115. Main buffer spring; 116. Rubber buffer sleeve; 12. Auxiliary anti-seismic buffer assembly; 121. Shock-absorbing movable strip; 122. Semi-conical anti-seismic block; 123. Auxiliary buffer spring; 124. Arc-shaped anti-seismic pressure plate; 125. Sealing rubber strip; 13. Elastic sealing flange block; 14. Sealing gasket strip. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] See also Figures 1-6As shown, the present invention provides a technical solution: a fully sealed, highly seismic and variable load three-ring reduction mechanism, the main body of which is a lower sealed bearing shell 1 and an upper sealed protective shell 2 sealed and connected by bolts, and in the mounting groove 9 at the junction of the two, elastic sealing flange blocks 13 are fixed to both sides of the inner wall of the mounting groove 9, and the sealing gasket strip 14 is fixed to the inner bottom wall of the mounting groove 9, and both are in close contact with the bottom end of the upper sealed protective shell 2; the top of the anti-variable load planetary gear ring 8 on the output transmission shaft 4 is connected to the oil injection channel tube 3, and a sealing cover is provided on the top of the oil injection channel tube 3 and is sealed and connected to the upper sealed protective shell 2, and the first variable load input transmission shaft 5 and the second variable load input transmission shaft 6 are extended to the outside of the lower sealed bearing shell 1, and a sealing shaft ring is provided at the extension. , together forming a fully sealed structure, the two side walls of the three internal groups of three-ring transmission gear ring plates 7 are fixedly connected to the connecting flange plate 10, one end of which is connected to the first variable load input transmission shaft 5, and the other end is connected to the second variable load input transmission shaft 6. The middle part cooperates with the anti-variable load planetary gear ring 8 on the output transmission shaft 4 to realize power transmission. A main anti-seismic buffer component 11 and a secondary anti-seismic buffer component 12 for coping with variable loads are provided between the three groups of three-ring transmission gear ring plates 7. The main anti-seismic buffer component 11 is provided with two and is symmetrically distributed on both sides of the three-ring transmission gear ring plate 7. Its first oblique shock-absorbing block 111 is fixedly connected to the side wall of the connecting flange plate 10 away from the three-ring transmission gear ring plate 7, and the buffer rolling wheel 112 is rotatably connected to the first oblique The side wall of the inclined shock-absorbing block 111 is arranged, and the movable push rod 114 is slidably connected to the two side walls of the lower sealing bearing shell 1, the second inclined shock-absorbing block 113 is fixedly connected to the side wall of the movable push rod 114 and the side wall of the inclined part contacts the outer wall of the buffer rolling wheel 112, the main buffer spring 115 is fixedly connected between the side wall of the second inclined shock-absorbing block 113 and the inner wall of the lower sealing bearing shell 1 and is movably sleeved on the outer wall of the movable push rod 114, and the outer wall of the buffer block fixedly connected to the end of the movable push rod 114 away from the second inclined shock-absorbing block 113 is sleeved with a rubber buffer sleeve 116, and the outer wall of the rubber buffer sleeve 116 is clearance-matched with the inner wall of the lower sealing bearing shell 1, in the secondary anti-seismic buffer assembly 12, the shock-absorbing movable bar 12 1 is movably hinged on the side wall of the connecting flange plate 10 away from the three-ring transmission gear ring plate 7, and is provided with two symmetrically distributed ones. The semi-conical anti-seismic block 122 is fixedly connected to the side wall of the shock-absorbing movable bar 121 away from the connecting flange plate 10. The auxiliary buffer spring 123 is fixedly connected between the two semi-conical anti-seismic blocks 122. The arc-shaped anti-seismic pressure-bearing plates 124 are fixedly connected to the inner wall of the lower sealing bearing shell 1 and are provided with two corresponding positions to the semi-conical anti-seismic blocks 122. The sealing rubber strip 125 is fixedly connected to the side wall of the arc-shaped anti-seismic pressure-bearing plate 124 away from the lower sealing bearing shell 1, and is in close contact with the outer wall of the semi-conical anti-seismic block 122. The main and auxiliary anti-seismic buffer components jointly achieve high seismic performance to cope with variable loads.

[0024] according to Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the top of the sealing bearing shell 1 is sealed and connected to the upper sealing protection shell 2 by bolts; a mounting groove 9 is provided on the top, and elastic sealing flange blocks 13 are fixedly connected on both sides of the inner wall of the mounting groove 9, and a sealing gasket strip 14 is fixedly connected to the inner bottom wall, and the bottom end of the upper sealing protection shell 2 is in close contact with the elastic sealing flange block 13 and the sealing gasket strip 14 to enhance the sealing performance; its two side walls are slidingly connected to the movable push rod 114 of the main seismic buffer component 11, and the inner wall is fixedly connected to the main buffer spring 115 of the main seismic buffer component 11 and the arc-shaped seismic pressure plate 124 of the auxiliary seismic buffer component 12, and the interior carries three groups of three-ring transmission gear ring plates 7, output transmission shaft 4 and other components, providing a stable installation foundation and structural support for the entire mechanism.

[0025] Furthermore, the bottom of the upper sealing protective shell 2 matches the mounting groove 9 at the top of the lower sealing bearing shell 1, and is sealed with the lower sealing bearing shell 1 by bolts. Its bottom end is in close contact with the elastic sealing flange block 13 and the sealing gasket strip 14 in the mounting groove 9, together forming a sealing structure; it is sealed with the oil injection channel tube 3, and a sealing cover is provided on the top of the oil injection channel tube 3, which cooperates with other sealing components to form a fully sealed environment, thereby effectively protecting the internal components.

[0026] Furthermore, one end of the first variable load input transmission shaft 5 is connected to one end of the three sets of three-ring transmission gear ring plates 7, and the other end extends to the outside of the lower seal bearing shell 1. The part extending to the outside is provided with a sealing shaft ring to ensure sealing; it is used to input variable load power, and through the connection with the three-ring transmission gear ring plate 7, the external variable load power is transmitted to the internal transmission. It is an important component for the mechanism to receive external power.

[0027] Furthermore, one end of the second variable load input transmission shaft 6 is connected to one end of the three sets of three-ring transmission gear ring plates 7 away from the first variable load input transmission shaft 5, and the other end extends to the outside of the lower seal bearing shell 1. The part extending to the outside is provided with a sealing shaft ring to ensure sealing; it cooperates with the first variable load input transmission shaft 5 to jointly undertake the input task of variable load power, and transmits power to the internal transmission through the connection with the three-ring transmission gear ring plate 7, providing dual power input for the mechanism to cope with variable loads, thereby enhancing the mechanism's adaptability to variable loads.

[0028] according to Figure 3 and Figure 5As shown, the main anti-seismic buffer assembly 11 is provided with two and symmetrically distributed on both sides of the three-ring transmission gear ring plate 7, wherein the first oblique shock-absorbing block 111 is fixedly connected to the side wall of the connecting flange plate 10 away from the three-ring transmission gear ring plate 7, the buffer rolling wheel 112 is rotatably connected to the side wall of the first oblique shock-absorbing block 111 at the inclination, the movable push rod 114 is slidably connected to the two side walls of the lower sealing bearing shell 1, the second oblique shock-absorbing block 113 is fixedly connected to the side wall of the movable push rod 114 and the side wall of the oblique part contacts the outer wall of the buffer rolling wheel 112, and the main buffer spring 115 is fixedly connected to the second oblique shock-absorbing block 113 between the side wall and the inner wall of the lower sealed bearing shell 1, and the movable sleeve is arranged on the outer wall of the movable push rod 114. The outer wall of the buffer block fixedly connected to the end of the movable push rod 114 away from the second inclined shock-absorbing block 113 is sleeved with a rubber buffer sleeve 116. The outer wall of the rubber buffer sleeve 116 is gap-matched with the inner wall of the lower sealed bearing shell 1. Through the contact cooperation between the inclined shock-absorbing block and the rolling wheel, the impact force of the three-ring transmission gear ring plate 7 under variable load is transmitted to the movable push rod and the buffer spring, and then further buffered by the rubber buffer sleeve, which can effectively absorb and alleviate the lateral impact caused by the variable load and improve the seismic performance of the mechanism.

[0029] Furthermore, the auxiliary anti-seismic buffer assembly 12 has a shock-absorbing movable bar 121 movably hinged on the side wall of the connecting flange plate 10 away from the three-ring transmission gear ring plate 7, and is provided with two symmetrically distributed semi-conical anti-seismic blocks 122 fixedly connected to the side wall of the shock-absorbing movable bar 121 away from the connecting flange plate 10, the auxiliary buffer spring 123 is fixedly connected between the two semi-conical anti-seismic blocks 122, and the arc-shaped anti-seismic pressure plate 124 is fixedly connected to the inner wall of the lower sealed bearing shell 1 and is provided with two, corresponding to the position of the semi-conical anti-seismic blocks 122, The sealing rubber strip 125 is fixedly connected to the side wall of the arc-shaped seismic-resistant pressure plate 124 away from the end of the lower sealing bearing shell 1, and is in close contact with the outer wall of the semi-conical seismic-resistant block 122. The component uses a hinged shock-absorbing movable strip to drive the semi-conical seismic-resistant block, and cooperates with the auxiliary buffer spring and the sealing rubber strip on the arc-shaped seismic-resistant pressure plate to cope with the multi-directional impact force generated by variable loads. The impact energy is absorbed through the expansion and contraction of the spring and the elastic deformation of the rubber strip, and it works together with the main seismic-resistant buffer component to enhance the seismic buffering ability of the mechanism to cope with variable loads.

[0030] The effects achieved by the entire organization are: In terms of power transmission, external variable-load power is transmitted into the mechanism via the first variable-load input transmission shaft 5 and the second variable-load input transmission shaft 6. These two input transmission shafts are respectively connected to the two ends of the three sets of three-ring transmission gear ring plates 7, evenly transmitting the power to the three sets of gear ring plates. The middle portion of the three sets of three-ring transmission gear ring plates 7 meshes with the anti-variable-load planetary gear ring 8 on the output transmission shaft 4. With the meshing action of the three-ring transmission structure and the planetary gear ring, power deceleration and torque conversion are completed. Finally, the processed power is output through the output transmission shaft 4 to meet the power requirements of external equipment. The connecting flange plates 10 fixed to the two side walls of the three sets of three-ring transmission gear ring plates 7 not only enhance the structural strength of the gear ring plates, but also provide a stable connection point for the subsequent installation of the anti-seismic buffer assembly.

[0031] When a variable load generates an impact, the connecting flange plate 10 in the main anti-seismic buffer assembly 11 transmits the vibration of the three-ring transmission gear ring plate 7 to the first inclined shock absorber 111. The buffer roller 112 at the inclined portion of the first inclined shock absorber 111 rotates accordingly and contacts the sidewall of the inclined portion of the second inclined shock absorber 113, transmitting the impact force to the second inclined shock absorber 113. Because the movable push rod 114 is slidably connected to the two side walls of the lower sealed bearing shell 1, the second inclined shock absorber 113, when subjected to force, pushes the movable push rod 114 to move. At this time, the main buffer spring 115 is compressed, using its elastic deformation to absorb a large amount of lateral impact energy. At the same time, the rubber buffer sleeve 116, which is mounted on the outer wall of the buffer block at the end of the movable push rod 114 away from the second inclined shock absorber 113, is clearance-matched with the inner wall of the lower sealed bearing shell 1, further buffering the remaining impact force and preventing the impact from directly acting on the shell. Furthermore, two main anti-vibration buffer components 11 are provided and symmetrically distributed on both sides of the three-ring transmission gear ring plate 7, which can evenly share the impact and enhance the anti-vibration effect.

[0032] The secondary anti-seismic buffer assembly 12 responds to variable load impacts from multiple directions. When vibration occurs, the connecting flange plate 10 drives the movable hinged shock-absorbing movable bar 121 to swing, and the semi-conical anti-seismic block 122 fixed at the other end of the shock-absorbing movable bar 121 moves accordingly. The semi-conical anti-seismic block 122 corresponds to the position of the arc-shaped anti-seismic pressure plate 124 fixed on the inner wall of the lower sealing bearing shell 1, and its outer wall is in close contact with the sealing rubber strip 125 on the arc-shaped anti-seismic pressure plate 124. The sealing rubber strip 125 initially buffers the impact through its own elastic deformation. At the same time, the secondary buffer spring 123 between the two semi-conical anti-seismic blocks 122 will expand and contract due to the movement of the semi-conical anti-seismic block 122, further absorbing the impact energy in the longitudinal and other directions. The main and secondary anti-seismic buffer assemblies cooperate with each other to form a three-dimensional anti-seismic buffer system, which effectively offsets the vibration caused by variable loads and ensures the stable operation of the transmission system.

[0033] In terms of sealing and protection, the lower seal-bearing housing 1 and the upper seal-protective housing 2 are hermetically connected via bolts. The mounting groove 9 at the top of the lower seal-bearing housing 1 mates with the bottom of the upper seal-protective housing 2. The elastic sealing flange 13 and sealing gasket 14 within the mounting groove 9 are in close contact with the bottom of the upper seal-protective housing 2, forming a first line of tight sealing defense. Sealing rings, located where the first and second variable-load input drive shafts 5 and 6 extend outside the housing, and an oil injection channel 3 (equipped with a sealing cap at the top and hermetically connected to the upper seal-protective housing 2) connected to the top of the anti-variable planetary gear ring 8 create a fully sealed environment, preventing external dust, moisture, and other substances from entering the mechanism and preventing internal lubricant leakage. Furthermore, the oil injection channel 3 allows lubricant to be injected into key transmission components, such as the anti-variable planetary gear ring 8, reducing frictional losses during component meshing and ensuring the mechanism maintains good operating condition over the long term.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fully sealed, highly seismic-resistant, variable-load three-ring speed reducer, characterized by: It comprises a lower sealed bearing shell (1), a main anti-seismic buffer component (11) and a secondary anti-seismic buffer component (12); An upper sealing protection housing (2) is provided on the top of the lower sealing bearing housing (1), and the lower sealing bearing housing (1) and the upper sealing protection housing (2) are sealed and connected by bolts; a three-ring transmission gear ring plate (7) is provided inside the lower sealing bearing housing (1), and a first variable load input transmission shaft (5) is provided at one end of the three groups of the three-ring transmission gear ring plates (7), and a second variable load input transmission shaft (6) is provided at one end of the three groups of the three-ring transmission gear ring plates (7) away from the first variable load input transmission shaft (5). An output transmission shaft (4) is provided in the middle of the three groups of three-ring transmission gear ring plates (7), and an anti-load planetary gear ring (8) is provided on the output transmission shaft (4); a main anti-seismic buffer component (11) and a secondary anti-seismic buffer component (12) for coping with variable loads are provided between the three groups of three-ring transmission gear ring plates (7); an oil injection channel tube (3) is provided on the top of the anti-load planetary gear ring (8), a sealing cover is provided on the top of the oil injection channel tube (3), and the oil injection channel tube (3) is sealed and connected to the upper sealing protection shell (2).

2. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 1, characterized in that: Both side walls of the three groups of three-ring transmission gear ring plates (7) are fixedly connected with connecting flange plates (10).

3. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 2, characterized in that: The main anti-seismic buffer assembly (11) includes a first oblique shock-absorbing block (111), a buffer rolling wheel (112), a second oblique shock-absorbing block (113), a movable push rod (114), a main buffer spring (115), and a rubber buffer sleeve (116); the first oblique shock-absorbing block (111) is fixedly connected to the side wall of the connecting flange plate (10) away from the three-ring transmission gear ring plate (7), the buffer rolling wheel (112) is rotatably connected to the side wall of the first oblique shock-absorbing block (111), and the movable push rod (114) is slidably connected to the two side walls of the lower sealed bearing shell (1), the second inclined shock-absorbing block (113) is fixedly connected to the side wall of the movable push rod (114), the side wall of the inclined portion of the second inclined shock-absorbing block (113) contacts the outer wall of the buffer rolling wheel (112), the main buffer spring (115) is fixedly connected between the side wall of the second inclined shock-absorbing block (113) and the inner wall of the lower sealed bearing shell (1), and the main buffer spring (115) is movably sleeved on the outer wall of the movable push rod (114).

4. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 3, characterized in that: The main anti-seismic buffer components (11) are provided with two, symmetrically distributed on both sides of the three-ring transmission gear ring plate (7).

5. The fully sealed, highly seismic-resistant, variable-load three-ring speed reducer according to claim 3, characterized in that: One end of the movable push rod (114) away from the second inclined shock-absorbing block (113) is fixedly connected to a buffer block, the outer wall of the buffer block is provided with a rubber buffer sleeve (116), and the outer wall of the rubber buffer sleeve (116) is gap-matched with the inner wall of the lower sealing bearing shell (1).

6. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 1, characterized in that: The auxiliary anti-seismic buffer assembly (12) includes a shock-absorbing movable strip (121), a semi-conical anti-seismic block (122), an auxiliary buffer spring (123), an arc-shaped anti-seismic pressure plate (124), and a sealing rubber strip (125); the shock-absorbing movable strip (121) is movably hinged on the side wall of the connecting flange plate (10) away from the three-ring transmission gear ring plate (7), and the shock-absorbing movable strip (121) is provided with two, which are symmetrically distributed, and the semi-conical anti-seismic block (122) is fixedly connected to the side wall of the shock-absorbing movable strip (121) away from the connecting flange plate (10). The auxiliary buffer spring (123) is fixedly connected between the two semi-conical anti-seismic blocks (122), the arc-shaped anti-seismic pressure plate (124) is fixedly connected to the inner wall of the lower sealing bearing shell (1), and the arc-shaped anti-seismic pressure plate (124) is provided with two, corresponding to the positions of the semi-conical anti-seismic blocks (122), the sealing rubber strip (125) is fixedly connected to the side wall of the arc-shaped anti-seismic pressure plate (124) away from one end of the lower sealing bearing shell (1), and the sealing rubber strip (125) is in close contact with the outer wall of the semi-conical anti-seismic block (122).

7. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 1, characterized in that: Sealing shaft rings are provided at the locations where the first variable load input transmission shaft (5) and the second variable load input transmission shaft (6) extend to the outside of the lower sealing bearing housing (1).

8. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 1, characterized in that: The top of the lower sealing bearing shell (1) is provided with a mounting groove (9), and the bottom of the upper sealing protection shell (2) matches the mounting groove (9); elastic sealing flange blocks (13) are fixedly connected to both sides of the inner wall of the mounting groove (9), and a sealing gasket strip (14) is fixedly connected to the inner bottom wall of the mounting groove (9), and the bottom end of the upper sealing protection shell (2) is in close contact with the elastic sealing flange block (13) and the sealing gasket strip (14).

9. The fully sealed, highly seismic and variable load three-ring speed reducer according to claim 1, characterized in that: An oil injection channel tube (3) is provided on the top of the anti-variable load planetary gear ring (8), a sealing cover is provided on the top of the oil injection channel tube (3), and the oil injection channel tube (3) is sealedly connected to the upper sealing protection housing (2).

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