Ultra-quiet high-precision reducer and manufacturing method

Abstract

The present application relates to the technical field of reducers, and discloses an ultra-quiet, high-precision reducer and a manufacturing method thereof. The reducer comprises a housing, wherein a worm wheel and a worm are rotatably connected to each other via a bearing assembly. The housing is provided with an end cover at the axial end of the worm, and a recessed groove is provided on the outer end face of the end cover. A worm axial positioning assembly is provided in the recessed groove. The positioning assembly comprises a positioning base, which is provided in the recessed groove and has a central through hole; a plurality of adjustment units are provided and evenly distributed on the positioning base along the circumference; a connecting sleeve, which is rotatably connected to the central through hole and has a fixing assembly for fixing the worm; a silencer assembly is provided on the top of the housing, and a shock-absorbing assembly is provided on the bottom of the housing. The application provides a positioning assembly to fine-tune the position of the worm wheel and the worm, thereby ensuring the accuracy of assembly and reducing the generation of noise. At the same time, the silencer assembly absorbs the generated noise, and the shock-absorbing assembly reduces the vibration and noise generated by the reducer.

Description

Technical Field

[0001] The present application relates to the technical field of reducers, and in particular to an ultra-quiet, high-precision reducer 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 current gear reducer has reduced gear accuracy due to mechanical vibration, assembly error, and gear wear, which causes noise during use. Summary of the Invention

[0004] In order to improve the problem of high noise generated by the reducer, the present application provides an ultra-quiet high-precision reducer and a manufacturing method.

[0005] This application provides an ultra-quiet, high-precision reducer and a manufacturing method thereof, which adopt the following technical solutions:

[0006] An ultra-quiet, high-precision speed reducer comprises a housing, wherein a worm wheel and a worm are rotatably connected to each other via a bearing assembly. An end cap is provided on the axial end of the worm, and a mounting hole is provided on the end cap. A recess is provided on the outer end face of the end cap coaxially with the mounting hole. A positioning assembly for adjusting the axial direction of the worm is provided in the recess. The positioning assembly comprises

[0007] A positioning base is arranged in the sink and has a central through hole;

[0008] A plurality of adjustment units are provided and uniformly distributed on the positioning base along the circumferential direction. The adjustment units include a connecting block rotatably connected to the positioning base, an adjusting rod is internally threadedly connected to the connecting block, a slider is rotatably provided at the end of the adjusting rod, a guide rail is radially provided on the bottom wall of the sink, and the slider is slidably engaged with the guide rail;

[0009] A connecting sleeve is rotatably connected to the central through hole, wherein a fixing assembly for fixing the worm is provided in the connecting sleeve;

[0010] The top of the box is provided with a silencer assembly, and the bottom of the box is provided with a shock-absorbing assembly.

[0011] By adopting the above technical solution, the worm wheel and the worm are rotatably connected in the box body, the worm wheel and the worm are meshed with each other, the end of the worm is passed through the mounting hole of the end cover, and the end cover is fixed to the box body, the end of the worm is fixed by the fixing assembly, the positioning assembly is installed in the recessed groove of the end cover, and the fixing assembly is connected to the connecting sleeve. By rotating the adjustment unit in different positions, the position and inclination angle of the positioning base are fine-tuned, thereby adjusting the axial offset position of the worm and the axial displacement of the worm, ensuring the precise assembly of the worm wheel and the worm, reducing the wear between the worm wheel and the worm, increasing the service life of the worm wheel and the worm, and reducing the generation of noise; the noise generated by the reducer is absorbed by the silencer assembly; the vibration and noise generated by the reducer are reduced by the shock-absorbing assembly.

[0012] Optionally, the fixing assembly includes a connecting seat arranged in a connecting sleeve, a connecting hole is axially opened in the connecting seat, a tightening piece is provided on the circumferential side of the inner wall of the connecting hole, the tightening piece includes a toothed connecting plate connected to the connecting seat, a tightening block is connected to the toothed connecting plate, the tightening block is provided with a wedge-shaped structure at one end away from the toothed connecting plate, a fastener is threadedly connected to the connecting seat, and a pushing ring is provided on the fastener that cooperates with the wedge-shaped structure of the tightening block; a plurality of clamping blocks are provided on the outer peripheral wall of the connecting seat, and a clamping groove for the clamping block to be clamped is opened on the inner wall of the connecting sleeve.

[0013] By adopting the above technical solution, when fixing the worm, the connecting seat sleeve is set on the worm, and the clamping block is set to a wedge-shaped structure. By screwing the fastener, the pushing ring drives the pushing block to shrink inward and abut against the surface of the worm, thereby fixing the worm; when the clamping block moves, the toothed connecting plate is deformed and the elastic potential energy increases. When the fastener is screwed in the opposite direction, the pushing ring moves outward, and the abutting block moves outward under the action of the toothed connecting plate, and the abutting block is separated from the worm, thereby realizing rapid fixation and separation of the worm.

[0014] Optionally, the positioning base includes base one and base two, and multiple groups of spherical grooves one and spherical grooves two are formed on opposite sides of base one and base two; each group of spherical grooves one and spherical grooves two forms a connecting through-hole, and are evenly distributed on the circumference of the central through-hole; the outer walls of the connecting sleeve and the connecting block are both spherical arc surfaces, and the inner wall of the central through-hole is set to a spherical concave surface that adapts to the connecting sleeve, and the connecting block is rotatably connected in the connecting through-hole; a plurality of positioning blocks are provided on base one, and a positioning groove for the positioning block to be inserted is opened on base two and fixed by screws.

[0015] By adopting the above technical solution, the positioning base is made of base one and base two that are interlocked and spliced ​​together, and are matched with the positioning block and the positioning groove and fixed by screws to ensure that the two are quickly aligned during assembly, avoid dislocation, and improve assembly efficiency; the spherical arc surface design of the connecting sleeve and the connecting block, as well as the connecting through hole formed by the spherical groove one and the spherical groove two of base one and base two, and the inner wall of the center through hole are set to be adapted to the spherical concave surface of the connecting sleeve, allowing the connecting block and the connecting sleeve to rotate in multiple directions in the connecting through hole and the center through hole respectively to meet the adjustment needs of different angles.

[0016] Optionally, a plug hole is provided on the slider, a clamping ring is provided in the plug hole, and a clamping groove is provided on the adjusting rod, wherein when the adjusting member is inserted into the plug hole, the clamping ring is clamped in the clamping groove, and the adjusting rod can rotate in the plug hole.

[0017] By adopting the above technical solution, the slider and the adjusting member have detachable structures, which facilitates installation; at the same time, it ensures that the slider can slide along the guide rail when the adjusting rod rotates.

[0018] The top of the support frame is connected with the bottom of the support frame, and the bottom of the support frame is connected with the support frame, and a gasket is provided between the support frame and the box body; a plurality of shock absorbers are provided between the support seat and the support plate, and the shock absorber comprises a cylinder that passes through the support seat, and one end of the cylinder is slidably connected to a piston rod located above the support seat, and the piston rod is connected to the support plate, and an elastic member is sleeved on the circumference of the piston rod, and the two ends of the elastic member respectively abut against the support seat and the support plate; a floating piston is provided in the cylinder and at one end located below the support seat, and a screw is provided on the floating piston, and the screw passes through and is threadedly connected to the end of the cylinder; a plurality of guide rods are provided on the support seat, and a guide sleeve is provided on the support plate, and the guide rod is slidably connected to the guide sleeve; a buffer pad is provided at one end of the guide rod away from the support seat, and a gap is provided between the buffer pad and the bottom of the box body.

[0019] By adopting the above technical solution, during use, the piston rod and the cylinder cooperate, and the elastic parts around the piston rod absorb the main vibration energy in the vertical direction through compression and rebound, thereby reducing the direct impact on the support seat; the lateral displacement of the support plate is constrained by the sliding cooperation of the guide rod and the guide sleeve, ensuring that the shock absorber moves only in the vertical direction, avoiding structural instability caused by lateral force, and a buffer pad is set on the guide rod to provide physical limitation and soft contact during extreme displacement, thereby avoiding rigid collision between the guide rod and the box body, causing damage to the box body; the position of the floating piston can be changed by rotating the screw, and the volume of the cylinder cavity or the medium pressure can be adjusted, so as to flexibly control the damping coefficient to adapt to different loads or vibration frequency requirements.

[0020] Optionally, a limiting column is provided on the support seat, and a buffer block is provided at the end of the limiting column.

[0021] By adopting the above technical solution, the limit column can limit the maximum compression displacement of the support plate during the shock absorption process, avoiding excessive compression of the elastic part. At the same time, the limit column can prevent the piston rod or cylinder from exceeding the design stroke, avoiding structural damage.

[0022] Optionally, the silencer assembly includes a silencer box arranged at the top of the box body, a silencer cavity is arranged in the silencer box, a sound receiving channel connected to the silencer cavity is arranged at the bottom of the silencer box, a sound absorbing layer is arranged on the inner wall of the silencer cavity, and a plurality of partition plates are arranged inside the silencer cavity.

[0023] By adopting the above technical solution, the sound receiving channel directs the noise generated by the equipment during operation into the silencing cavity, avoiding disorderly reflection and amplification of sound waves inside the box, improving noise control efficiency, and dividing the silencing cavity into circuitous channels through multiple partitions, forcing the sound waves to reflect multiple times and contact the sound-absorbing layer, significantly extending the sound wave propagation path and enhancing the noise attenuation effect. At the same time, the circuitous channel can destroy the resonance conditions of sound waves of specific frequencies and avoid noise amplification.

[0024] Optionally, the partition plate includes a first partition plate and a second partition plate, one end of the first partition plate and the second partition plate is rotatably connected to the connecting shaft provided on the inner wall of the silencer chamber, and a pushing member is provided in the middle between the first partition plate and the second partition plate, and the pushing member includes a guide sleeve fixedly connected to the connecting shaft, and a push rod is slidably connected in the guide sleeve, and an elastomer is provided between the push rod and the guide sleeve, and the elastomer can expand and contract under the influence of temperature and drive the push rod to move; the push rod is hinged to a support rod 1 and a support rod 2 at one end away from the guide sleeve, and the support rod 1 and the support rod 2 are respectively hinged to the side walls of the first partition plate and the second partition plate, and a tension spring is provided between the support rod 1 and the support rod 2; a receiving groove for accommodating the pushing member is provided on the opposite side of the first partition plate and the second partition.

[0025] By adopting this technical solution, when sound energy is converted into heat, causing the temperature inside the silencer chamber to rise, the thermal expansion of the elastomer drives the push rod outward. Through the connecting rod mechanism, the angle between the first and second struts increases, driving the separation distance between the first and second baffles to widen. Simultaneously, the tension spring stretches, increasing its elastic potential energy. This process dynamically changes the cross-sectional topology of the circuitous channel, improving the sound attenuation in the mid- and high-frequency bands. When the temperature drops, the contraction of the elastomer and the restoring force of the tension spring work together to restore the distance between the first and second baffles to their initial state, achieving automatic adjustment of the sound attenuation characteristics and maintaining optimal sound attenuation efficiency under different operating conditions.

[0026] Optionally, the partition plate in the silencing cavity is configured as a spiral partition plate, forming a double helical structure channel in the silencing cavity.

[0027] By adopting the above technical solutions, the spiral structure realizes a longer acoustic path within a limited volume, avoiding the limitation that traditional straight cavities need to occupy a large space; the phase and direction of the sound waves in the spiral channel constantly change, causing sound waves of different frequencies to interfere with and cancel each other, effectively suppressing noise in specific frequency bands and reducing the formation of standing waves; the spiral structure forces the sound waves to reflect and scatter multiple times along the curved path, increasing the contact time with the sound-absorbing material and improving the sound absorption effect.

[0028] A method for manufacturing an ultra-quiet, high-speed reducer comprises the following steps:

[0029] S1: Check the integrity of each component;

[0030] S2: Install the worm gear into the housing through the bearing assembly, fix the end cover to the housing, and fix the fixing assembly to the end of the worm;

[0031] S3: Install the positioning assembly in the sink groove of the end cover, and connect the fixing assembly to the connecting sleeve;

[0032] S4: By rotating the adjustment unit, fine-tune the axial position of the worm so that the worm wheel and worm are accurately assembled;

[0033] S5: Install the shock absorber assembly on the bottom of the box and the silencer assembly on the top of the box;

[0034] S6: Inject lubricating oil into the box.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. By rotating the adjustment unit at different positions, the position and tilt angle of the positioning base can be fine-tuned, thereby adjusting the axial offset position and axial displacement of the worm, ensuring the precise assembly of the worm wheel and the worm, reducing the wear between the worm wheel and the worm, increasing the service life of the worm wheel and the worm, and reducing the noise generation;

[0037] 2. When fixing the worm, the connecting seat is set on the worm, and the abutting block is set in a wedge-shaped structure. By screwing the fastener, the pushing ring drives the pushing block to shrink inward and abut against the surface of the worm, thereby fixing the worm; when the abutting block moves, the toothed connecting plate is deformed, and the elastic potential energy increases. When the fastener is screwed in the opposite direction, the pushing ring moves outward, and the abutting block moves outward under the action of the toothed connecting plate, and the abutting block is separated from the worm, thereby realizing rapid fixation and separation of the worm;

[0038] 3. The spherical arc surface design of the connecting sleeve and the connecting block, the connecting through hole formed by the spherical grooves 1 and 2 of the base 1 and the base 2, and the inner wall of the center through hole are set to be adapted to the spherical concave surface of the connecting sleeve, allowing the connecting block and the connecting sleeve to rotate in multiple directions in the connecting through hole and the center through hole respectively to meet the adjustment requirements of different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a structural diagram of the ultra-quiet, high-precision reducer of Example 1 of the present application.

[0040] Figure 2 It is an exploded schematic diagram of the end cover, positioning assembly and fixing assembly of Example 1 of the present application.

[0041] Figure 3 It is a cross-sectional view of the fixing assembly of Example 1 of the present application.

[0042] Figure 4 It is a structural diagram of the positioning base of Example 1 of the present application.

[0043] Figure 5 It is a structural diagram of the connection between the adjusting rod and the slider in Example 1 of the present application.

[0044] Figure 6 It is a cross-sectional view of the shock absorbing assembly of Example 1 of the present application.

[0045] Figure 7 This is a cross-sectional view of the ultra-quiet, high-precision reducer of Example 1 of the present application.

[0046] Figure 8 This is a cross-sectional view of the ultra-quiet and high-precision reducer of Example 2 of the present application.

[0047] Figure 9 It is a structural schematic diagram of the partition plate of Example 2 of the present application.

[0048] Figure 10 It is a structural schematic diagram of the spiral structure silencer cavity in Example 3 of the present application.

[0049] Figure numerals: 1, housing; 2, worm gear; 3, worm; 4, end cover; 41, mounting hole; 42, sink groove; 43, guide rail; 5, positioning assembly; 51, positioning base; 511, base one; 5111, positioning block; 512, base two; 5121, positioning groove; 513, center through hole; 514, spherical groove one; 515, spherical groove two; 52, adjusting unit; 521, connecting block; 522, adjusting rod; 5221, snap groove; 523, slider; 5231, plug hole; 5231, snap ring; 53, connecting sleeve; 531, snap groove; 6, fixing assembly; 61, connecting seat; 611, connecting hole; 612, snap block; 62, tightening member; 621, toothed connecting plate; 622, tightening block; 6 3. Fastener; 631. Push ring; 7. Silencer assembly; 71. Silencer box; 72. Sound receiving channel; 73. Silencer chamber; 74. Partition plate; 741. First partition plate; 742. Second partition plate; 743. Connecting shaft; 745. Accommodating groove; 75. Pusher; 751. Guide sleeve; 752. Push rod; 753. Support rod one; 754. Support rod two; 755. Tension spring; 756. Elastomer; 8. Shock absorber assembly; 81. Support seat; 811. Guide rod; 812. Buffer pad; 82. Support plate; 821. Guide sleeve; 83. Shock absorber; 831. Cylinder; 832. Piston rod; 833. Floating piston; 834. Screw; 84. Elastic member; 85. Gasket; 86. Limit column; 861. Buffer block. DETAILED DESCRIPTION

[0050] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings.

[0051] 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.

[0052] Example 1:

[0053] The present application discloses an ultra-quiet high-precision reducer, referring to Figure 1 , including a box body 1, in which a worm wheel 2 and a worm 3 are rotatably connected to each other through a bearing assembly. An end cover 4 is installed at the axial end of the box body 1 to provide a mounting hole 41 at the center of the end cover 4, and a recessed groove 42 is provided on the outer end surface of the end cover 4 and coaxially with the mounting hole 41.

[0054] Reference Figure 1 and Figure 2 A positioning assembly 5 for adjusting the axial direction of the worm 3 is installed in the sink 42. The positioning assembly 5 includes a positioning base 51, an adjusting unit 52 and a connecting sleeve 53. The positioning base 51 is movably installed in the sink 42 through the adjusting unit 52. The positioning base 51 is a disc-shaped structure with a central through hole 513 provided on the positioning base 51. There are multiple adjusting units 52, which are distributed on the positioning base 51. The adjusting unit 52 includes a connecting block 521 rotatably connected to the positioning base 51. The connecting block 521 is internally threadedly connected to an adjusting rod 522, and the end of the adjusting rod 522 close to the end cover is rotatably connected to a slider 523. A plurality of guide rails 43 are radially arranged on the bottom wall of the sink 42, and the plurality of guide rails 43 are evenly distributed along the axial direction of the sink 42. The cross-section of the guide rail 43 is a trapezoidal structure, and a guide groove is provided on the slider 523. The slider 523 slides with the guide rail 43; the connecting sleeve 53 is rotatably connected to the center through hole 513, and a fixing component 6 for fixing the worm 3 is installed in the connecting sleeve 53.

[0055] When in use, the end of the worm 3 passes through the mounting hole 41 of the end cover 4 and is connected to the fixing assembly 6, which is fixed in the connecting sleeve 53 and fine-tuned by the positioning assembly 5 in the sink 42; the position and inclination of the positioning base 51 can be fine-tuned by the adjustment units 52 in different positions, so as to accurately correct the axial centering and play of the worm 3, ensure that the contact area of ​​the meshing tooth surface is ≥80%, ensure the precise assembly of the worm wheel 2 and the worm 3, reduce the wear between the worm wheel 2 and the worm 3, increase the service life of the worm wheel 2 and the worm 3, and control the operating noise below 70dB.

[0056] Reference Figure 2 and Figure 3 The fixing assembly 6 includes a connecting seat 61 installed in the connecting sleeve 53, and a connecting hole 611 is axially opened in the connecting seat 61. The inner wall circumference of the connecting hole 611 is fixedly connected to a tightening piece 62, and the tightening piece 62 includes a toothed connecting plate 621 fixedly connected to the inner side of the end of the connecting seat 61. Each tooth plate of the toothed connecting plate 621 has elasticity, and each tooth plate of the toothed connecting plate 621 is fixedly connected to a tightening block 622. The tightening block 622 is set to a wedge-shaped structure at one end of the connecting seat 61 away from the tightening piece 62, and a fastener 63 is threadedly connected to the end of the connecting seat 61 away from the tightening piece 62. The end of the fastener 63 located in the connecting seat 61 is provided with a pushing ring 631 that cooperates with the wedge-shaped structure of the tightening block 622; a plurality of blocking blocks 612 are formed on the outer peripheral wall of the connecting seat 61, and a card groove 531 for the blocking block 612 to be clamped is opened on the inner wall of the connecting sleeve 53, and the blocking block 612 is clamped in the card groove 531.

[0057] During assembly, the connector 61 is inserted into the worm 3, and the fastener 63 is tightened, driving the push ring 631 to move axially, forcing the wedge-shaped abutment block 622 to contract radially. The elastic deformation of the toothed connecting plate 621 generates a preload, ultimately achieving rigid clamping of the worm 3. During disassembly, the fastener is rotated in the opposite direction. The elastic potential energy stored in the toothed connecting plate 621 automatically resets the abutment block 622, achieving rapid release. The self-locking clamping mechanism of the fixing assembly 6 ensures zero displacement during operation, while the elastic reset structure improves assembly and disassembly efficiency.

[0058] Reference Figure 2 and Figure 4 The positioning base 51 includes a base 1 511 and a base 2 512 arranged in parallel. A plurality of groups of spherical grooves 1 514 and spherical grooves 2 515 are correspondingly and penetrated on the opposite sides of the base 1 511 and the base 2 512. Each group of spherical grooves 1 514 and spherical grooves 2 515 forms a connecting through-hole and is evenly distributed on the circumference of the central through-hole 513; the outer walls of the connecting sleeve 53 and the connecting block 521 are both spherical arc surfaces, and the inner wall of the central through-hole 513 is set to a spherical concave surface adapted to the connecting sleeve 53, and the connecting block 521 is rotatably connected to the connecting through-hole; a plurality of positioning blocks 5111 are evenly distributed on the circumference of the base 1 511, and a positioning groove 5121 is opened on the base 2 512 for the positioning block 5111 to be snapped into, and fixed by screws.

[0059] The positioning base 51 is made of base one 511 and base two 512 which are interlocked and spliced ​​together. The positioning block 5111 and the positioning groove 5121 cooperate and are fixed by screws to ensure that the two are quickly aligned during assembly, avoid misalignment, and improve assembly efficiency; the spherical arc surface design of the connecting sleeve 53 and the connecting block 521, as well as the connecting through hole formed by the spherical groove one 514 and the spherical groove two 515 of the base one 511 and the base two 512, and the inner wall of the center through hole 513 are set to adapt to the spherical concave surface of the connecting sleeve 53, allowing the connecting block 521 and the connecting sleeve 53 to rotate in multiple directions in the connecting through hole and the center through hole 513 respectively to meet the adjustment requirements of different angles.

[0060] Reference Figure 5 The slider 523 has an insertion hole 5231, a snap ring 5231 is engaged in the insertion hole 5231, and a snap groove 5221 is formed at the end of the adjustment rod 522. When the adjustment rod 522 is inserted into the insertion hole 5231, the snap ring 5231 is engaged in the snap groove 5221, preventing the adjustment rod 522 from falling off. At the same time, the adjustment rod 522 can rotate in the insertion hole 5231. The slider 523 and the adjustment member are detachable, which facilitates installation and ensures that the slider 523 can slide along the guide rail 43 when the adjustment rod 522 rotates.

[0061] Reference Figure 6 and Figure 7The bottom of the box body 1 is equipped with a shock absorbing assembly 8, which includes a support seat 81 and a supporting plate 82. The supporting plate 82 is located above the support seat 81. The supporting plate 82 and the support seat 81 are arranged horizontally. The supporting plate 82 is connected to the bottom of the box body 1. A gasket 85 is installed between the supporting plate 82 and the box body 1; a plurality of shock absorbing members 83 are evenly installed between the support seat 81 and the supporting plate 82. The shock absorbing member 83 includes a cylinder 831 that is connected to the support seat 81, and a cylinder 831 is located in the cylinder 831 and is located at the support seat. One end above the support seat 81 is slidably connected to a piston rod 832, which is fixedly connected to the support plate 82. An elastic member 84 is sleeved on the piston rod 832, and the elastic member 84 is a spring. The two ends of the elastic member 84 are respectively in contact with the support seat 81 and the support plate 82; one end in the cylinder 831 and below the support seat 81 is slidably connected to a floating piston 833, and a screw 834 is connected to the floating piston 833, which passes through and is threadedly connected to the end of the cylinder 831.

[0062] A plurality of guide rods 811 are fixedly connected to the support seat 81, and a plurality of guide sleeves 821 are connected through the support plate 82. The guide rods 811 are slidably connected in the guide sleeves 821. A buffer pad 812 is fixedly connected to the end of the guide rod 811 away from the support seat 81, and there is a gap between the buffer pad 812 and the bottom of the box body 1.

[0063] During use, the piston rod 832 and the cylinder 831 cooperate, and the elastic member 84 sleeved on the piston rod 832 absorbs the main vibration energy in the vertical direction through compression and rebound, thereby reducing the direct impact on the support seat 81; the lateral displacement of the support plate 82 is constrained by the sliding cooperation between the guide rod 811 and the guide sleeve 821, ensuring that the shock absorber 83 only moves in the vertical direction to avoid structural instability caused by lateral force, and the buffer pad 812 is installed on the guide rod 811 to provide physical limitation and soft contact during extreme displacement, thereby avoiding rigid collision between the guide rod 811 and the box body 1, which may cause damage to the box body 1; the position of the floating piston 833 can be changed by rotating the screw 834, and the inner cavity volume or medium pressure of the cylinder 831 can be adjusted, so as to flexibly control the damping coefficient to adapt to different loads or vibration frequency requirements.

[0064] Support base 81 is mounted with a plurality of limit posts 86, located at the top corners of support base 81. Buffer blocks 861 are fixedly connected to the ends of limit posts 86, creating a gap between buffer blocks 861 and support plate 82. Limit posts 86 limit the maximum compression displacement of support plate 82 during the shock absorption process, preventing overcompression of elastic member 84. Limit posts 86 also prevent piston rod 832 or cylinder 831 from exceeding their designed travel, thus preventing structural damage.

[0065] Reference Figure 7A silencer assembly 7 is installed on the top of the box body 1. The silencer assembly 7 includes a silencer box 71 fixed to the top of the box body 1. The silencer box 71 has a hollow structure. A silencer cavity 73 is formed inside the silencer box 71. A sound receiving channel 72 connected to the silencer cavity 73 is opened at the bottom of the silencer box 71. The inner wall of the silencer cavity 73 is provided with a sound-absorbing layer. A plurality of partition plates 74 are fixedly connected to the inside of the silencer cavity 73. The partition plates 74 are vertically connected to the inner wall of the silencer cavity 73. The plurality of partition plates 74 are staggered and arranged on opposite sides of the inner wall of the silencer cavity 73. The partition plates 74 are porous plates and are fixedly connected to the inner wall of the silencer cavity 73.

[0066] The sound receiving channel 72 directs the noise generated by the operation of the equipment into the silencer cavity 73 in a direction, avoiding disordered reflection and amplification of sound waves inside the box 1, thereby improving the noise control efficiency. The silencer cavity 73 is divided into a circuitous channel by multiple partition plates 74, forcing the sound waves to reflect multiple times and contact the sound-absorbing layer, significantly extending the sound wave propagation path and enhancing the noise attenuation effect. At the same time, the circuitous channel can destroy the resonance conditions of sound waves of a specific frequency and avoid noise amplification.

[0067] The implementation principle of an ultra-quiet and high-precision reducer in an embodiment of the present application is: when in use, when the worm wheel 2 and worm 3 are installed in the box body 1, the position of the worm 3 is fine-tuned by the positioning component 5 to improve the meshing accuracy of the worm wheel 2 and worm 3 and reduce the wear between the worm wheel 2 and worm 3. At the same time, the shock-absorbing component 8 is used to reduce the vibration of the reducer motor and reduce the generation of noise; the silencer component 7 is used to absorb the noise generated by the reducer to reduce noise pollution.

[0068] Example 2:

[0069] Reference Figure 8 and Figure 9The difference between this embodiment and embodiment 1 is that the partition plate 74 includes a first partition plate and a second partition plate 742, the inner wall of the silencer chamber 73 is fixedly connected to a connecting shaft 743, one end of the first partition plate 741 and the second partition plate 742 is rotatably connected to the connecting shaft 743, and a pushing member 75 is provided between the first partition plate 741 and the second partition plate 742. The pushing member 75 is used to drive the first partition plate 741 and the second partition plate 742 to expand or close, and the pushing member 75 includes a guide sleeve 751 vertically welded to the connecting shaft 743, a push rod 752 is slidably connected in the guide sleeve 751, one end of the push rod 752 extends to the outside of the guide sleeve 751, and an elastic body 756 is installed between the push rod 752 and the guide sleeve 751. An air cavity is provided in the middle of the elastic body 756, and the air cavity is filled with inert gas. When the temperature rises, the inert gas in the air cavity expands due to the heat, causing the elastomer 756 to stretch; conversely, when the temperature drops, the air cavity shrinks and the elastomer 756 contracts; the elastomer 756 is sleeved on the end of the push rod 752 located outside the guide sleeve 751, and the elastomer 756 is connected to the end of the guide sleeve. The elastomer 756 can expand and contract due to the temperature and drive the push rod 752 to move; the end of the push rod 752 away from the guide sleeve 751 is hinged with a support rod 1 753 and a support rod 2 754, and the support rod 1 753 and the support rod 2 754 are respectively hinged on the side walls of the first partition 741 and the second partition 742, and a tension spring 755 is installed between the support rod 1 753 and the support rod 2 754; a receiving groove 745 for accommodating the push member 75 is provided on the opposite side of the first partition 741 and the second partition 742.

[0070] The operating principle of the ultra-quiet, high-precision reducer of the present embodiment is as follows: during use, sound energy is converted into heat energy within the muffler chamber 73, causing the temperature inside the chamber 73 to rise. The elastic body 756 expands due to the heat, driving the push rod 752 outward. Utilizing the connecting rod principle, the opening of the first and second support rods 753 and 754 increases, causing the first and second baffles 741 and 742 to separate. At this time, the tension spring 755 is stretched, increasing its potential energy and separating the first and second baffles 741 and 742, thus changing the internal structure of the muffler chamber 73 and increasing the number of small chambers within the chamber, thereby enhancing the noise reduction effect. After the temperature drops, the elastic body 756 contracts, and under the action of the tension spring 755, it drives the first and second baffles 741 and 742 closer together. This dynamically changes the cross-sectional topology of the circuitous channel, achieving automatic adjustment of the noise reduction characteristics and maintaining optimal noise reduction efficiency under different operating conditions.

[0071] Example 3:

[0072] Reference Figure 10The difference between this embodiment and embodiment 1 or embodiment 2 is that the partition plate 74 in the silencer cavity 73 is set as a spiral partition plate, the cross-section of the silencer cavity 73 is a circular structure, a double helix structure channel is formed in the silencer cavity 73, and the two sound receiving channels 72 at the bottom of the silencer box 71 are each connected to a spiral structure.

[0073] The implementation principle of an ultra-quiet and high-precision reducer in an embodiment of the present application is: the spiral structure realizes a longer acoustic path within a limited volume, avoiding the limitation that a traditional straight cavity needs to occupy a large space; the phase and direction of the sound waves in the spiral channel constantly change, causing sound waves of different frequencies to interfere with and cancel each other, effectively suppressing noise in a specific frequency band and reducing the formation of standing waves; the spiral structure forces the sound waves to reflect and scatter multiple times along a curved path, increasing the contact time with the sound-absorbing material and improving the sound absorption effect.

[0074] A method for manufacturing an ultra-quiet, high-speed reducer comprises the following steps:

[0075] S1: Check the integrity of each component;

[0076] S2: Install the worm wheel 2 and worm 3 in the housing 1 through the bearing assembly, fix the end cover 4 on the housing 1, and fix the fixing assembly 6 on the end of the worm 3;

[0077] S3: Install the positioning assembly 5 in the sink 42 of the end cover 4, and connect the fixing assembly 6 to the connecting sleeve 53;

[0078] S4: By rotating the adjustment unit 52, the axial position of the worm 3 is finely adjusted so that the worm wheel 2 and the worm 3 are accurately assembled;

[0079] S5: Install the shock absorbing assembly 8 on the bottom of the box 1 and the silencer assembly 7 on the top of the box 1;

[0080] S6: Inject lubricating oil into the box 1.

[0081] 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. An ultra-quiet high-precision speed reducer, comprising a housing (1), wherein a worm wheel (2) and a worm (3) are rotatably connected to each other in the housing (1) via a bearing assembly, wherein an end cover (4) is provided at the axial end of the worm (3) of the housing (1), and a mounting hole (41) is provided on the end cover (4), characterized in that: The outer end surface of the end cover (4) is coaxially provided with a sinking groove (42) and the mounting hole (41). A positioning assembly (5) for adjusting the axial direction of the worm (3) is provided in the sinking groove (42). The positioning assembly (5) includes A positioning base (51) is disposed in the sink (42) and is provided with a central through hole (513); A plurality of adjusting units (52) are provided and uniformly distributed on the positioning base (51) along the circumferential direction. The adjusting units (52) include a connecting block (521) rotatably connected to the positioning base (51). The connecting block (521) is internally threadedly connected to an adjusting rod (522). A slider (523) is rotatably provided at the end of the adjusting rod (522). A guide rail (43) is radially provided on the bottom wall of the sink (42). The slider (523) is slidably engaged with the guide rail (43). A connecting sleeve (53) is rotatably connected to the central through hole (513), and a fixing component (6) for fixing the worm (3) is provided in the connecting sleeve (53); The top of the box (1) is provided with a silencer assembly (7), and the bottom of the box (1) is provided with a shock-absorbing assembly (8).

2. The ultra-quiet high-precision reducer according to claim 1, characterized in that: The fixing assembly (6) includes a connecting seat (61) arranged in the connecting sleeve (53), a connecting hole (611) is axially opened in the connecting seat (61), a tightening member (62) is arranged on the inner wall side of the connecting hole (611), the tightening member (62) includes a toothed connecting plate (621) connected to the connecting seat (61), a tightening block (622) is connected to the toothed connecting plate (621), and the tightening block (622) is arranged at one end away from the toothed connecting plate (621) as a wedge-shaped structure, the connecting seat (61) is internally threadedly connected to a fastener (63), and the fastener (63) is provided with a pushing ring (631) that cooperates with the wedge-shaped structure of the tightening block (622); a plurality of clamping blocks (612) are arranged on the outer peripheral wall of the connecting seat (61), and a clamping groove (531) for the clamping block (612) to be clamped is opened on the inner wall of the connecting sleeve (53).

3. The ultra-quiet high-precision reducer according to claim 1, characterized in that: The positioning base (51) includes a base 1 (511) and a base 2 (512), and a plurality of groups of spherical grooves 1 (514) and spherical grooves 2 (515) are provided on opposite sides of the base 1 (511) and the base 2 (512); each group of the spherical grooves 1 (514) and the spherical grooves 2 (515) forms a connecting through hole, and is evenly distributed on the circumference of the central through hole (513); the outer sides of the connecting sleeve (53) and the connecting block (521) are provided with a plurality of spherical grooves 1 (514) and spherical grooves 2 (515). The walls are all spherical concave surfaces, the inner wall of the central through hole (513) is set to a spherical arc surface that adapts to the connecting sleeve (53), and the connecting block (521) is rotatably connected in the connecting through hole; a plurality of positioning blocks (5111) are set on the base (511), and a positioning groove (5121) for the positioning block (5111) to be snapped into is opened on the base (512), and the base (511) and the base (512) are fixed by screws.

4. The ultra-quiet high-precision reducer according to claim 1, characterized in that: The slider (523) is provided with a plug hole (5231), a snap ring (5231) is provided in the plug hole (5231), and the adjusting rod (522) is provided with a snap groove (5221), wherein when the adjusting member is inserted into the plug hole (5231), the snap ring (5231) is snapped into the snap groove (5221), and the adjusting rod (522) can rotate in the plug hole (5231).

5. The ultra-quiet high-precision reducer according to claim 1, characterized in that: The shock absorbing assembly (8) comprises a support seat (81) and a supporting plate (82), wherein the supporting plate (82) is arranged above the support seat (81), the supporting plate (82) is connected to the bottom of the box body (1), and a gasket (85) is arranged between the supporting plate (82) and the box body (1); a plurality of shock absorbing members (83) are arranged between the support seat (81) and the supporting plate (82), and the shock absorbing member (83) comprises a cylinder (831) penetrating the support seat (81), a piston rod (832) is slidably connected to one end of the cylinder (831) located above the support seat (81), the piston rod (832) is connected to the supporting plate (82), and an elastic member (84) is sleeved on the circumference of the piston rod (832), and the elastic member The two ends of (84) are respectively in contact with the support seat (81) and the supporting plate (82); a floating piston (833) is provided at one end of the cylinder (831) and located below the support seat (81), and a screw (834) is provided on the floating piston (833), and the screw (834) passes through and is threadedly connected to the end of the cylinder (831); a plurality of guide rods (811) are provided on the support seat (81), and a guide sleeve (821) is provided on the supporting plate (82), and the guide rod (811) is slidably connected to the guide sleeve (821); a buffer pad (812) is provided at one end of the guide rod (811) away from the support seat (81), and a gap is provided between the buffer pad (812) and the bottom of the box body (1).

6. The ultra-quiet high-precision reducer according to claim 5, characterized in that: A limiting column (86) is provided on the support seat (81), and a buffer block (861) is provided at the end of the limiting column (86).

7. The ultra-quiet high-precision reducer according to claim 1, characterized in that: The muffler assembly (7) comprises a muffler box (71) arranged at the top of the box body (1), a muffler cavity (73) being arranged in the muffler box (71), a sound receiving channel (72) communicating with the muffler cavity (73) being arranged at the bottom of the muffler box (71), a sound absorbing layer being arranged on the inner wall of the muffler cavity (73), and a plurality of partition plates (74) being arranged in the muffler cavity (73).

8. The ultra-quiet high-precision reducer according to claim 7, characterized in that: The partition plate (74) includes a first partition plate and a second partition plate (742), one end of the first partition plate (741) and the second partition plate (742) are rotatably connected to the inner wall of the muffler chamber (73) and a connecting shaft (743) is provided. A pusher (75) is provided in the middle between the first partition plate (741) and the second partition plate (742), and the pusher (75) includes a guide sleeve (751) fixedly connected to the connecting shaft (743). A push rod (752) is slidably connected in the guide sleeve (751), and an elastic body (756) is provided between the push rod (752) and the guide sleeve (751). The elastic body (756) can expand and contract due to the influence of temperature and drive the push rod (752) to move; the push rod (752) is hinged with a support rod (753) and a support rod (754) at one end away from the guide sleeve (751), and the support rod (753) and the support rod (754) are respectively hinged on the side walls of the first partition (741) and the second partition (742), and a tension spring (755) is provided between the support rod (753) and the support rod (754); a receiving groove (745) for accommodating the push member (75) is provided on the opposite side of the first partition (741) and the second partition (742).

9. The ultra-quiet high-precision reducer according to claim 7, characterized in that: The partition plate (74) in the muffler cavity (73) is configured as a spiral partition plate, and a double-helix structure channel is formed in the muffler cavity (73).

10. The method for manufacturing an ultra-quiet, high-speed reducer according to any one of claims 1 to 9, characterized in that: The steps include: S1: Check the integrity of each component; S2: Install the worm wheel (2) and the worm (3) in the housing (1) through the bearing assembly, fix the end cover (4) on the housing (1), and fix the fixing assembly (6) on the end of the worm (3); S3: Install the positioning assembly (5) in the sink (42) of the end cover (4), and connect the fixing assembly (6) to the connecting sleeve (53); S4: By rotating the adjustment unit (52), the axial position of the worm (3) is finely adjusted so that the worm wheel (2) and the worm (3) are accurately assembled; S5: Install the shock absorbing assembly (8) on the bottom of the box (1) and install the silencer assembly (7) on the top of the box (1); S6: Inject lubricating oil into the box (1).

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