Mute stable transmission gear reducer

Abstract

The invention relates to the technical field of gear speed reducers, in particular to a mute stable transmission gear speed reducer which comprises a speed reducer base, a speed reducer lower shell is fixedly installed above the speed reducer base through bolts, and a speed reducer upper shell is fixedly installed above the speed reducer lower shell through bolts. The noise reduction device has the beneficial effects that the sound insulation and noise reduction structure and the transmission shaft stabilizing structure are arranged, the first double-layer sound insulation cover, the second double-layer sound insulation cover and the bottom closing plate form a complete noise reduction screen cover, noise is absorbed, and a certain heat dissipation effect is achieved; meanwhile, a certain damping effect is achieved between the inner walls of the speed reducer lower shell and the speed reducer upper shell, the noise reduction effect is achieved to the maximum extent, a lubricating oil pipe system is arranged below an upper sealing plate, when lubricating oil flows into a lubricating oil pipe, the lubricating oil can be dispersed through the upper portion of a lubricating semi-closed cover and branch pipes on the two sides, and therefore the lubricating effect is improved. Drops lubricate the gear engagement and the surface of the transmission shaft.

Description

Technical Field

[0001] The invention belongs to the technical field of gear reducers, and in particular relates to a gear reducer with silent and stable transmission. Background Art

[0002] A gear reducer is a mechanical transmission device that reduces speed and increases torque by changing the speed ratio between the input shaft and the output shaft. It is widely used in industrial automation, conveying systems, robotics and other occasions that require precise control of speed and torque. The core of the gear reducer is the gear set, which consists of a series of intermeshing gears. When the motor or other power source drives the input shaft, these gears convert the rotational motion from high speed and low torque to low speed and high torque. Generally speaking, the gear reducer mainly includes a housing, a gear set, bearings, seals, a drive shaft and a lubrication system. The gear housing includes an upper gear box shell and a lower gear box shell that are connected to each other. For the overall gear shaft, its stability during operation depends on the stability of the connection between the upper gear box shell and the lower gear box shell. If there is looseness at the connection between the upper gear box shell and the lower gear box shell, it will directly affect the stability of the gear shaft transmission.

[0003] The existing Chinese patent document with publication number CN113775739B proposes a gear reducer, which is provided with a large eccentric wheel and a small eccentric wheel. The large eccentric wheel abuts against the inner wall of the lower box body, so that the upper hole wall of the through hole of the large eccentric wheel forms a positioning for the transmission shaft, and for the through hole of the small eccentric wheel, the lower hole wall of the through hole forms a positioning for the transmission shaft. Under such a structure, the through holes of the large eccentric wheel and the small eccentric wheel are used to form a staggered clamping effect for the transmission shaft, so that the coordinated cooperation between the large eccentric wheel, the small eccentric wheel and the lower box body can form a positioning for the position of the transmission shaft in the lower box body, even if the joint between the upper box body and the lower box body is loose, the transmission shaft can maintain its position relatively stable, but the contact points between the large eccentric wheel, the small eccentric wheel and the transmission shaft will form a local high-pressure area, which may lead to stress concentration during long-term operation, especially at high-speed operation, which may cause vibration and noise.

[0004] Therefore, the present invention proposes a gear reducer with silent and stable transmission to solve the problem in the prior art that the transmission shaft of the gear reducer is not stable and has vibration and noise. An embedded closed sound insulation cover structure is designed and a dynamic support ring structure is introduced to dynamically support and correct the displacement of the transmission shaft when the gear reducer is working, so that the transmission shaft can run stably and reduce noise at the same time. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a gear reducer with silent and stable transmission to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gear reducer with silent and stable transmission, comprising a reducer base, a reducer lower shell being fixedly installed on the top of the reducer base by bolts, a reducer upper shell being fixedly installed on the top of the reducer lower shell by bolts, an output shaft and an input shaft being arranged inside the reducer lower shell and the reducer upper shell, a gear transmission assembly being arranged between the output shaft and the input shaft, a sound insulation and noise reduction structure being arranged outside the output shaft and the input shaft, a transmission shaft stabilizing structure being arranged inside the sound insulation and noise reduction structure, the sound insulation and noise reduction structure comprising a double-layer sound insulation cover one and a double-layer sound insulation cover two, and the transmission shaft stabilizing structure comprising a self-adjusting stabilizing ring and a small self-adjusting stabilizing ring.

[0007] Preferably, the double-layer sound insulation cover one and the double-layer sound insulation cover two have the same structure, an upper closing plate is arranged above the double-layer sound insulation cover one and the double-layer sound insulation cover two, an upper sealing ring compatible with the double-layer sound insulation cover one and the double-layer sound insulation cover two is fixedly installed on the lower surface of the upper closing plate, locking pins are symmetrically fixedly installed on both sides of the lower surface of the upper closing plate, a bottom closing plate is fixedly installed on the bottom of the inner surface of the lower shell of the reducer, and a bottom sealing ring compatible with the double-layer sound insulation cover one and the double-layer sound insulation cover two is fixedly installed on the upper surface of the bottom closing plate.

[0008] Preferably, sound insulation cover mounting columns are symmetrically fixedly installed on both sides of the upper surface of the bottom closing plate, a locking groove matched with the locking pin is provided in the middle of the sound insulation cover mounting column, and locking elastic plates matched with double-layer sound insulation cover one and double-layer sound insulation cover two are symmetrically slidably installed on both sides of the locking groove, and a spring is provided between the side wall of the locking elastic plate and the inner wall of the sound insulation cover mounting column.

[0009] Preferably, an L-shaped sound absorbing strip is fixedly installed inside the double-layer sound insulation cover 1, sound absorbing grooves are arranged between the L-shaped sound absorbing strips, a heat dissipation groove is opened on the inner side wall of the double-layer sound insulation cover 1, and a shock absorbing strip is fixedly installed on the outer surface of the double-layer sound insulation cover 1.

[0010] Preferably, a lubricating oil pipe is fixedly installed below the upper closing plate, a lubricating semi-closed cover is fixedly installed below the middle of the lubricating oil pipe, lubricating branch pipe clamping rings are fixedly installed below both sides of the lubricating oil pipe, and a magnetic ring is provided on the outer surface of the lubricating branch pipe clamping ring.

[0011] Preferably, the self-adjusting stabilizing ring has the same structure as the small self-adjusting stabilizing ring, and the self-adjusting stabilizing ring and the small self-adjusting stabilizing ring are symmetrically fixedly installed on the inner walls of the double-layer sound insulation cover one and the double-layer sound insulation cover two respectively, a fixing ring is fixedly installed on one side of the self-adjusting stabilizing ring, and the side walls of the double-layer sound insulation cover one and the double-layer sound insulation cover two are provided with assembly grooves compatible with the fixing rings.

[0012] Preferably, a lubrication branch pipe clamping seat compatible with the lubrication branch pipe clamping ring is fixedly installed in the middle of the outer surface of the self-adjusting stabilizing ring, a magnetic ring 2 is provided on the inner surface of the lubrication branch pipe clamping seat, and a lubrication oil nozzle is fixedly installed in the middle of the lubrication branch pipe clamping seat, and the lubrication oil nozzle passes through the inner wall of the self-adjusting stabilizing ring.

[0013] Preferably, an inner stabilizing ring is fixedly mounted on the inner surface of the self-adjusting stabilizing ring, adjustment grooves are evenly distributed on both sides of the inner stabilizing ring, and a ball mounting cavity is arranged in the middle of the inner stabilizing ring.

[0014] Preferably, a feedback limit ring is movably installed inside the ball installation cavity, a feedback push rod penetrating the inner stabilizing ring is fixedly installed above the feedback limit ring, and balls are evenly distributed inside the feedback limit ring.

[0015] Preferably, an adaptive adjustment folding plate is symmetrically fixedly installed in the middle of the inner surface of the self-adjusting stabilizing ring, an adjustment frame is provided on one side of the adaptive adjustment folding plate, the upper end of the adjustment frame is hinged to the inner surface of the self-adjusting stabilizing ring, and an adjustment roller compatible with the inner stabilizing ring is rotatably installed on the inner surface of the adjustment frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By setting up a sound insulation and noise reduction structure and a transmission shaft stabilizing structure, double-layer sound insulation cover 1, double-layer sound insulation cover 2, double-layer sound insulation cover 3 and a bottom closing plate form a complete noise reduction screen cover, which not only absorbs the noise but also plays a certain heat dissipation role. At the same time, it also plays a certain shock absorption role between the inner walls of the reducer lower housing and the reducer upper housing, thereby reducing the noise to the greatest extent. A lubricating oil pipe system is provided under the upper closing plate. When the lubricating oil flows into the lubricating oil pipe, the lubricating oil will be dispersed through the upper part of the lubricating semi-closed cover and the branch pipes on both sides, and drip on the gear meshing part and the surface of the transmission shaft for Lubrication can effectively reduce friction and wear, accelerate heat dissipation, and absorb part of the impact energy caused by incomplete gear meshing or slight misalignment, reducing the resulting noise and vibration. The self-adjusting stabilizing ring and the small self-adjusting stabilizing ring can dynamically support and adjust the output shaft, input shaft and transmission shaft, and automatically adjust the displacement deviation caused by the rotation of the shaft to ensure stable rotation. It not only improves the stability of the gear reducer operation, but also reduces vibration to a certain extent to achieve the effect of noise reduction, solving the problem of unstable operation of the gear reducer transmission shaft with vibration and noise in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of one side of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the other side of the present invention;

[0020] Figure 3 It is a schematic diagram of the disassembly structure of the reducer lower housing of the present invention;

[0021] Figure 4 It is a schematic diagram of the overall disassembly structure of the present invention from top view;

[0022] Figure 5 This is a schematic diagram of the overall disassembly structure of the present invention from a bottom view;

[0023] Figure 6 This is a schematic diagram of the structure of the sound insulation and noise reduction structure of the present invention after overall installation;

[0024] Figure 7 It is a schematic diagram of the disassembly structure of the upper closing plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the top view of the double-layer sound insulation cover 1 and the double-layer sound insulation cover 2 after installation of the present invention;

[0026] Fig. 9 It is a schematic diagram of the separation structure of the double-layer soundproof cover 1 and the double-layer soundproof cover 2 of the present invention;

[0027] Fig.10 It is a schematic diagram of the overall structure of a double-layer soundproof cover of the present invention;

[0028] Fig.11 It is a schematic diagram of the structure after the self-adjusting stabilizing ring and the output shaft of the present invention are installed;

[0029] Fig.12 It is a schematic diagram of the overall structure of the self-adjusting stabilizing ring of the present invention;

[0030] Fig.13 It is a schematic diagram of the cross-sectional structure of the self-adjusting stabilizing ring and the output shaft after installation of the present invention;

[0031] Fig.14 This is a schematic diagram of the disassembled structure of the self-adjusting stabilizing ring of the present invention.

[0032] In the figure: 1. reducer base; 2. reducer lower housing; 3. reducer upper housing; 4. output shaft; 5. input shaft; 6. sound insulation and noise reduction structure; 61. double-layer sound insulation cover 1; 611. L-shaped sound absorption strip; 612. sound absorption groove; 613. heat dissipation groove; 614. shock absorption strip; 62. double-layer sound insulation cover 2; 63. upper closing plate; 631. upper sealing ring; 632. lubricating oil pipe; 633. lubricating semi-enclosed cover; 634. lubricating branch pipe clamping ring; 6341. magnetic suction ring 1; 635. locking pin; 64. bottom closing plate; 641. bottom sealing ring; 65. Soundproof cover mounting column; 651. Locking groove; 652. Locking elastic plate; 653. Spring; 7. Transmission shaft stabilizing structure; 71. Self-adjusting stabilizing ring; 711. Lubrication branch pipe connector; 7111. Magnetic ring 2; 712. Fixed ring; 713. Inner stabilizing ring; 7131. Adjustment groove; 7132. Ball mounting cavity; 714. Lubrication nozzle; 715. Feedback limit ring; 7151. Ball; 7152. Feedback push rod; 716. Adaptive adjustment folding plate; 717. Adjustment frame; 7171. Adjustment roller; 72. Small self-adjusting stabilizing ring. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] For example, see Figures 1 to 14The present invention provides a technical solution: a gear reducer with silent and stable transmission, comprising a reducer base 1, a reducer lower housing 2 is fixedly installed on the reducer base 1 by bolts, a reducer upper housing 3 is fixedly installed on the reducer lower housing 2 by bolts, an output shaft 4 and an input shaft 5 are arranged inside the reducer lower housing 2 and the reducer upper housing 3, a gear transmission assembly is arranged between the output shaft 4 and the input shaft 5, and a sound insulation and noise reduction structure 6 is arranged outside the output shaft 4 and the input shaft 5. A transmission shaft stabilizing structure 7 is arranged on the inner side of the structure 6. The sound insulation and noise reduction structure 6 includes a double-layer sound insulation cover 1 61 and a double-layer sound insulation cover 2 62. The transmission shaft stabilizing structure 7 includes a self-adjusting stabilizing ring 71 and a small self-adjusting stabilizing ring 72. The double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62 have the same structure. An upper closing plate 63 is arranged above the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62. An upper sealing ring 63 adapted to the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62 is fixedly installed on the lower surface of the upper closing plate 63. 1. Locking pins 635 are symmetrically fixedly installed on both sides of the lower surface of the upper closing plate 63. A bottom closing plate 64 is fixedly installed on the bottom of the inner surface of the reducer lower housing 2. A bottom sealing ring 641 adapted to the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62 is fixedly installed on the upper surface of the bottom closing plate 64. Soundproof cover mounting columns 65 are symmetrically fixedly installed on both sides of the upper surface of the bottom closing plate 64. A locking groove 651 adapted to the locking pin 635 is provided in the middle of the soundproof cover mounting column 65. The locking groove 65 1 is symmetrically and slidably installed on both sides of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62 with locking elastic plates 652, a spring 653 is arranged between the side wall of the locking elastic plate 652 and the inner wall of the soundproof cover mounting column 65, an L-shaped sound-absorbing strip 611 is fixedly installed inside the double-layer soundproof cover 1 61, and a sound-absorbing groove 612 is arranged between the L-shaped sound-absorbing strips 611, a heat dissipation groove 613 is opened on the inner wall of the double-layer soundproof cover 1 61, and a shock-absorbing strip 614 is fixedly installed on the outer surface of the double-layer soundproof cover 1 61;In this embodiment, bearings and bearing seat fixing structures compatible with the input shaft 5, the output shaft 4 and the gear transmission assembly are arranged on both sides of the reducer lower housing 2 and the reducer upper housing 3. The bottom closing plate 64 closes the bottom of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62 at the bottom of the inner surface of the reducer lower housing 2. The upper closing plate 63 closes the top of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62. The double-layer soundproof cover 1 61, the double-layer soundproof cover 2 62, the upper closing plate 63 and the bottom closing plate 64 form a complete noise reduction screen cover to reduce the noise of the gear reducer. The bottom sealing ring 641 mainly plays a role in locking the bottom card slots of the double-layer soundproof cover 2 62 and the double-layer soundproof cover 1 61. The upper sealing ring 631 mainly plays the role of clamping and fixing the upper card slots of the double-layer sound insulation cover 62 and the double-layer sound insulation cover 62 and increasing the sealing of the upper part. After the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 62 are installed, when the upper closing plate 63 is installed on them, the locking pin 635 will be inserted into the locking slot 651 in the middle of the sound insulation cover installation column 65. At this time, the inner side of the locking elastic plate 652 is squeezed by the locking pin 635 so that the locking elastic plate 652 is squeezed out and clamped into the card slots on the sides of the double-layer sound insulation cover 2 62 and the double-layer sound insulation cover 2 62 to complete the locking of the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62, so that the double-layer sound insulation cover 1 61, the double-layer sound insulation cover 2 62, The upper closing plate 63 and the sound insulation cover mounting column 65 are fixed as an integrated noise reduction screen cover, and finally the reducer upper housing 3 is installed, and the reducer upper housing 3 and the reducer lower housing 2 are fixed with bolts, so that the reducer lower housing 2 and the reducer upper housing 3 wrap and fix the noise reduction screen cover as a whole on the outside to increase stability. When disassembly and maintenance are required, first disassemble the reducer upper housing 3 and then remove the bearing fixing seat structure and the upper closing plate 63. At this time, the locking pin 635 is pulled out, and the spring 653 rebounds to make the locking elastic plate 652 shrink into the inside of the sound insulation cover mounting column 65. At this time, the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62 together with the gears and transmission components can be disassembled together for maintenance and repair, and the assembly is simple. The double-layer soundproof cover 1 61 has the same structure as the double-layer soundproof cover 2 62, and both are double-layer noise reduction structures. The L-shaped sound-absorbing strip 611 filled inside can effectively perform sound insulation and noise reduction. The L-shaped sound-absorbing strip 611 is alternately installed in the middle to form a sound-absorbing groove 612. At the same time, the heat dissipation groove 613 opened on the inner side of the double-layer soundproof cover 1 61 not only absorbs the noise when it passes through the sound-absorbing groove 612, but also plays a certain heat dissipation role. Finally, the heat dissipation groove 613 outside the double-layer soundproof cover 1 61 is an elastic silicone strip, which not only plays the role of closing the sound-absorbing groove 612 for sound insulation, but also plays a certain heat dissipation role. It also plays a certain shock absorption role between the inner walls of the reducer lower shell 2 and the reducer upper shell 3, and plays a maximum noise reduction effect. ;

[0035] For example 2, please refer to Figures 1 to 14On the basis of the first embodiment, the present embodiment further proposes that a lubricating oil pipe 632 is fixedly installed below the upper closing plate 63, a lubricating semi-enclosed cover 633 is fixedly installed below the middle of the lubricating oil pipe 632, lubricating branch pipe clamping rings 634 are fixedly installed below both sides of the lubricating oil pipe 632, and a magnetic attraction ring 1 6341 is provided on the outer surface of the lubricating branch pipe clamping ring 634, the self-adjusting stabilizing ring 71 has the same structure as the small self-adjusting stabilizing ring 72, and the self-adjusting stabilizing ring 71 and the small self-adjusting stabilizing ring 72 are symmetrically fixedly installed on the inner side walls of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62, respectively, and the self-adjusting stabilizing ring 71 A fixing ring 712 is fixedly installed on one side, and the side walls of the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62 are provided with assembly grooves adapted to the fixing ring 712. A lubricating branch pipe clamping seat 711 adapted to the lubricating branch pipe clamping ring 634 is fixedly installed in the middle of the outer surface of the self-adjusting stabilizing ring 71, and a magnetic ring 2 7111 is provided on the inner surface of the lubricating branch pipe clamping seat 711. A lubricating oil nozzle 714 is fixedly installed in the middle of the lubricating branch pipe clamping seat 711, and the lubricating oil nozzle 714 passes through the inner wall of the self-adjusting stabilizing ring 71; in this embodiment, an inspection cover is provided on the top of the reducer upper housing 3, and a The sealing cover matched with the lubricating oil pipe 632 is installed obliquely below the upper closing plate 63, and has two branch pipes in the middle, both of which penetrate the inner wall of the lubricating semi-enclosed cover 633 and are located above the meshing part of the gear transmission component. Four branch pipes are respectively arranged on both sides of the lubricating oil pipe 632, which are respectively located above the output shaft 4, the input shaft 5 and the two sides of the transmission shaft. When the upper closing plate 63 is installed, the lubricating branch pipe clamping ring 634 will automatically clamp and correct and be installed above the lubricating branch pipe clamping seat 711 through the mutual attraction between the magnetic ring 1 6341 and the magnetic ring 2 7111, so that the lubricating oil pipe 632 on both sides is smooth. The lower end of the branch pipe is sealed and engaged with the upper end of the lubricating oil nozzle 714. When the lubricating oil flows into the lubricating oil pipe 632, the lubricating oil will be dispersed through the top of the lubricating semi-enclosed cover 633 and the branch pipes on both sides, and drip on the gear meshing and the surface of the transmission shaft for lubrication, which can effectively reduce friction and wear, accelerate heat dissipation, and absorb part of the impact energy caused by incomplete gear meshing or slight misalignment, and reduce the noise and vibration generated thereby. The lubricating oil pipe 632, the lubricating semi-enclosed cover 633 and the lubricating branch pipe clamping ring 634 form a good lubrication system, which makes the gear transmission more stable and smooth, and reduces the possibility of abnormal noise.

[0036] For example 3, please refer to Figures 1 to 14On the basis of the second embodiment, the present embodiment further proposes that an inner stabilizing ring 713 is fixedly installed on the inner surface of the self-adjusting stabilizing ring 71, and adjustment grooves 7131 are evenly distributed on both sides of the inner stabilizing ring 713. A ball mounting cavity 7132 is provided in the middle of the inner stabilizing ring 713, and a feedback limiting ring 715 is movably installed inside the ball mounting cavity 7132. A feedback push rod 7152 that passes through the inner stabilizing ring 713 is fixedly installed above the feedback limiting ring 715, and balls 7151 are evenly distributed inside the feedback limiting ring 715. The inner surface of the self-adjusting stabilizing ring 71 is symmetrically fixedly installed with Adaptive adjustment folding plate 716, an adjustment frame 717 is provided on one side of the adaptive adjustment folding plate 716, the upper end of the adjustment frame 717 is hinged to the inner surface of the self-adjusting stabilizing ring 71, and the inner surface of the adjustment frame 717 is rotatably installed with an adjustment roller 7171 adapted to the inner stabilizing ring 713; in this embodiment, the self-adjusting stabilizing ring 71 and the small self-adjusting stabilizing ring 72 mainly play the role of stable support and automatic correction of small displacement on both sides of the output shaft 4, the input shaft 5 and the transmission shaft. The self-adjusting stabilizing ring 71 and the small self-adjusting stabilizing ring 72 have the same structure. Taking the self-adjusting stabilizing ring 71 as an example The working principle of the self-adjusting stabilizing ring 71 is that the fixing ring 712 mainly fixes the self-adjusting stabilizing ring 71 on the side walls of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62. The inner diameter of the fixing ring 712 is larger than the diameter of the output shaft 4 so that the surface of the output shaft 4 does not rub against the fixing ring 712. When the output shaft 4 rotates, the ball 7151 can convert the sliding friction force into rolling friction force. The feedback limit ring 715 limits the ball 7151 inside the ball installation cavity 7132. At the same time, once the output shaft 4 is in an unstable state of rotation, the ball 7151 will be directly affected. The feedback limit ring 715 is affected and the displacement deviation is fed back to the feedback limit ring 715. At this time, the feedback push rod 7152 is pushed up to squeeze the bottom of the adaptive adjustment folding plates 716 on both sides. The adaptive adjustment folding plates 716 are deformed to further squeeze the adjustment frame 717 on the outside. At this time, the adjustment frame 717 will shrink inward to make the adjustment roller 7171 dynamically support and adjust the output shaft 4, and automatically adjust the displacement deviation of the output shaft 4, so that the output shaft 4 can ensure stable rotation, which not only improves the stability of the gear reducer operation, but also reduces vibration to a certain extent to achieve the effect of noise reduction.

[0037] Example 4, please refer to Figures 1 to 14On the basis of the third embodiment, the present embodiment further proposes an assembly method of a gear reducer with silent and stable transmission, comprising the following steps: Step 1, firstly, the output shaft 4, the input shaft 5 and the gear transmission assembly are installed on the inner side of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62, and after ensuring accurate meshing, the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62 are installed as a whole into the interior of the reducer lower housing 2, and the bottom sealing ring 641 above the bottom closing plate 64 is snapped into place with the bottom of the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62; Step 2, then align the locking pin 635 with the locking groove 651 inside the soundproof cover mounting column 65, and snap-fit ​​the upper closing plate 63 to the double-layer soundproof cover 1 61 and the double-layer soundproof cover 2 62. , ensure that the lubrication branch pipe clamping ring 634 is in place with the self-adjusting stabilizing ring 71 and the small self-adjusting stabilizing ring 72, and the upper sealing ring 631 is in place with the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62. At this time, the double-layer sound insulation cover 1 61 and the double-layer sound insulation cover 2 62 are locked by the pop-up locking elastic plate 652; Step three, finally, the reducer upper housing 3 is fixedly installed on the reducer lower housing 2 with bolts to complete the assembly; Step four, open the sealing cover on the reducer upper housing 3, and lubricating oil can be injected into the lubricating oil pipe 632. The lubricating oil will be dispersed through the top of the lubrication semi-enclosed cover 633 and the branches on both sides, and drip on the gear meshing and the surface of the transmission shaft for lubrication, so that the gear reducer can run stably.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear reducer with silent and stable transmission, comprising a reducer base (1), a reducer lower housing (2) being fixedly mounted on the upper part of the reducer base (1) by bolts, a reducer upper housing (3) being fixedly mounted on the upper part of the reducer lower housing (2) by bolts, an output shaft (4) and an input shaft (5) being arranged inside the reducer lower housing (2) and the reducer upper housing (3), a gear transmission assembly being arranged between the output shaft (4) and the input shaft (5), and characterized in that: The output shaft (4) and the input shaft (5) are provided with a sound insulation and noise reduction structure (6) on the outside, and a transmission shaft stabilizing structure (7) is provided on the inside of the sound insulation and noise reduction structure (6). The sound insulation and noise reduction structure (6) comprises a double-layer sound insulation cover 1 (61) and a double-layer sound insulation cover 2 (62), and the transmission shaft stabilizing structure (7) comprises a self-adjusting stabilizing ring (71) and a small self-adjusting stabilizing ring (72).

2. A silent and stable transmission gear reducer according to claim 1, characterized in that: The double-layer soundproof cover 1 (61) and the double-layer soundproof cover 2 (62) have the same structure. An upper closing plate (63) is arranged above the double-layer soundproof cover 1 (61) and the double-layer soundproof cover 2 (62). An upper sealing ring (631) matching the double-layer soundproof cover 1 (61) and the double-layer soundproof cover 2 (62) is fixedly installed on the lower surface of the upper closing plate (63). Locking pins (635) are symmetrically fixedly installed on both sides of the lower surface of the upper closing plate (63). A bottom closing plate (64) is fixedly installed on the bottom of the inner surface of the reducer lower housing (2). A bottom sealing ring (641) matching the double-layer soundproof cover 1 (61) and the double-layer soundproof cover 2 (62) is fixedly installed on the upper surface of the bottom closing plate (64).

3. A silent and stable transmission gear reducer according to claim 2, characterized in that: Soundproof cover mounting columns (65) are symmetrically fixedly mounted on both sides of the upper surface of the bottom closing plate (64); a locking groove (651) matched with the locking pin (635) is arranged in the middle of the soundproof cover mounting column (65); locking elastic plates (652) matched with the double-layer soundproof cover one (61) and the double-layer soundproof cover two (62) are symmetrically slidably mounted on both sides of the locking groove (651); a spring (653) is arranged between the side wall of the locking elastic plate (652) and the inner side wall of the soundproof cover mounting column (65).

4. The gear reducer with silent and stable transmission according to claim 1, characterized in that: An L-shaped sound absorbing strip (611) is fixedly installed inside the double-layer sound insulation cover (61), and sound absorbing grooves (612) are arranged between the L-shaped sound absorbing strips (611). A heat dissipation groove (613) is opened on the inner side wall of the double-layer sound insulation cover (61), and a shock absorbing strip (614) is fixedly installed on the outer surface of the double-layer sound insulation cover (61).

5. The silent and stable transmission gear reducer according to claim 2, characterized in that: A lubricating oil pipe (632) is fixedly installed below the upper closed plate (63), a lubricating semi-enclosed cover (633) is fixedly installed below the middle of the lubricating oil pipe (632), lubricating branch pipe clamping rings (634) are fixedly installed below both sides of the lubricating oil pipe (632), and a magnetic attraction ring (6341) is provided on the outer surface of the lubricating branch pipe clamping ring (634).

6. The silent and stable transmission gear reducer according to claim 1, characterized in that: The self-adjusting stabilizing ring (71) and the small self-adjusting stabilizing ring (72) have the same structure. The self-adjusting stabilizing ring (71) and the small self-adjusting stabilizing ring (72) are symmetrically fixedly mounted on the inner side walls of the first double-layer soundproofing cover (61) and the second double-layer soundproofing cover (62), respectively. A fixing ring (712) is fixedly mounted on one side of the self-adjusting stabilizing ring (71), and the side walls of the first double-layer soundproofing cover (61) and the second double-layer soundproofing cover (62) are provided with assembly grooves adapted to the fixing ring (712).

7. The gear reducer with silent and stable transmission according to claim 6, characterized in that: A lubricating branch pipe clamping seat (711) adapted to the lubricating branch pipe clamping ring (634) is fixedly installed in the middle of the outer surface of the self-adjusting stabilizing ring (71), a magnetic ring 2 (7111) is provided on the inner surface of the lubricating branch pipe clamping seat (711), and a lubricating oil nozzle (714) is fixedly installed in the middle of the lubricating branch pipe clamping seat (711), and the lubricating oil nozzle (714) passes through the inner wall of the self-adjusting stabilizing ring (71).

8. The silent and stable transmission gear reducer according to claim 1, characterized in that: An inner stabilizing ring (713) is fixedly mounted on the inner surface of the self-adjusting stabilizing ring (71), adjustment grooves (7131) are evenly distributed on both sides of the inner stabilizing ring (713), and a ball mounting cavity (7132) is arranged in the middle of the inner stabilizing ring (713).

9. The silent and stable transmission gear reducer according to claim 8, characterized in that: A feedback limit ring (715) is movably installed inside the ball installation cavity (7132), a feedback push rod (7152) penetrating the inner stabilizing ring (713) is fixedly installed above the feedback limit ring (715), and balls (7151) are evenly distributed inside the feedback limit ring (715).

10. The gear reducer with silent and stable transmission according to claim 9, characterized in that: An adaptive adjustment folding plate (716) is symmetrically fixedly installed in the middle of the inner surface of the self-adjusting stabilizing ring (71), and an adjustment frame (717) is arranged on one side of the adaptive adjustment folding plate (716). The upper end of the adjustment frame (717) is hinged to the inner surface of the self-adjusting stabilizing ring (71), and an adjustment roller (7171) adapted to the inner stabilizing ring (713) is rotatably installed on the inner surface of the adjustment frame (717).

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