Improved rack type cycloidal speed reducer

Abstract

The invention relates to the technical field of cycloidal speed reducers, in particular to an improved rack type cycloidal speed reducer which comprises a vibration reduction mechanism, the vibration reduction mechanism comprises a liquid bag used for vibration reduction, the liquid bag is filled with magnetorheological fluid, the bottom end of the liquid bag is fixedly connected with an N-stage electromagnetic plate, the top end of the liquid bag is fixedly connected with an S-stage electromagnetic plate, and the N-stage electromagnetic plate is fixedly connected with the S-stage electromagnetic plate. The vibration reduction mechanism further comprises a first piezoelectric ceramic piece, a second piezoelectric ceramic piece and a vibration reduction auxiliary mechanism, the first piezoelectric ceramic piece and the second piezoelectric ceramic piece are used for detecting vibration, and the vibration reduction auxiliary mechanism assists vibration reduction in a self-adaptive mode through friction force. The vibration reduction mechanism detects vibration and generates electric signals through a first piezoelectric ceramic piece and a second piezoelectric ceramic piece, then the generated electric signals are transmitted into a PLC, then the PLC controls currents introduced into an N-stage electromagnetic plate and an S-stage electromagnetic plate so as to control the size of a magnetic field, and the magnetic field intensity applied to magnetorheological fluid is adjusted, so that the vibration reduction effect is achieved. The viscosity and the rigidity can be changed in real time.

Description

Technical Field

[0001] The invention relates to the technical field of cycloid reducers, and in particular to an improved rack-type cycloid reducer. Background Art

[0002] A cycloid reducer is a deceleration device, mainly used to reduce speed and increase torque. It achieves deceleration through the interaction between the cycloid wheel and the pinwheel. The cycloid reducer is mainly composed of an input shaft, a cycloid wheel, a pinwheel, an output shaft and other components. When working, the input shaft drives the cycloid wheel to rotate, and relative motion is generated between the cycloid wheel and the pinwheel, thereby achieving a deceleration effect. For example, a cycloid pinwheel reducer based on an improved frame is disclosed in Application No. CN202110891389.3.

[0003] When the cycloid reducer is running, its core component, the cycloid wheel, and the pin gear housing interact with each other through meshing to achieve deceleration and torque transmission. However, due to the gap between the cycloid wheel and the pin gear housing, the two will collide with each other every time they are running, thus generating vibration and noise. The generated vibration and noise will make the operator uncomfortable, affecting their work efficiency and health. Since the gears, bearings, shafts and other components inside the cycloid reducer will generate friction when running at high speed, friction will consume part of the mechanical energy and convert it into heat energy, which will cause the temperature to rise. When the temperature rises, the components of the reducer will expand, including gears, bearings and housings. If the thermal expansion coefficients of the components are different or the heat is uneven, the gear meshing clearance and bearing clearance will change, and even the components will be deformed. The increase in these geometric errors will destroy the original motion balance and cause increased vibration and noise. Although the existing reducers have vibration reduction and noise reduction functions, as the running time of the cycloid reducer increases, vibration and noise will gradually accumulate. Even if the initial vibration reduction and noise reduction measures are reasonably designed, after long-term operation, the vibration and noise may exceed the tolerance of these measures, resulting in a weakening of their effects. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an improved rack-mounted cycloid reducer, which can effectively solve the problem that the prior art cannot adaptively adjust vibration reduction and noise reduction as vibration and noise increase.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an improved rack-type cycloid reducer, comprising: A vibration reduction mechanism, wherein the vibration reduction mechanism comprises a liquid capsule for vibration reduction, wherein the liquid capsule is filled with magnetorheological fluid, wherein the bottom end of the liquid capsule is fixedly connected to an N-level electromagnetic plate, and the top end of the liquid capsule is fixedly connected to an S-level electromagnetic plate, wherein the vibration reduction mechanism further comprises a first piezoelectric ceramic sheet and a second piezoelectric ceramic sheet for detecting vibration, and wherein the vibration reduction mechanism further comprises a vibration reduction auxiliary mechanism, wherein the vibration reduction auxiliary mechanism uses friction force to adaptively assist in vibration reduction; The adaptive noise reduction mechanism comprises a plurality of porous polyurethane foams for absorbing noise, wherein the porous polyurethane foams are embedded with electrostrictive fibers, and the adaptive noise reduction mechanism also comprises an electret film for detecting noise.

[0006] Preferably, it also includes a frame, the top of the frame is fixedly connected to a chassis, the top of the chassis has a placement opening, the placement opening is airtightly provided with a sealing blocking plate, the inner wall of the chassis is fixedly connected to two symmetrical fixed blocks, the opposite sides of the fixed blocks are commonly fixedly connected to a vibration damping frame, a cover plate is detachably provided at the top entrance of the vibration damping frame, the N-level electromagnetic plate and the S-level electromagnetic plate are both slidably connected to the inner wall of the vibration damping frame, the top of the S-level electromagnetic plate is fixedly connected to a magnetic isolation plate, the top of the magnetic isolation plate is fixedly connected to two symmetrical mounting frames, and the top of the mounting frames is fixedly connected to a cycloid reducer body.

[0007] Preferably, the cycloid reducer body includes a rotating shaft for driving, and the outer walls of the chassis and the vibration damping frame are provided with adjustment grooves, the inner walls of the adjustment grooves are airtightly slidably connected with adjustment plates, and the rotating shaft rotates through the adjustment plate.

[0008] Preferably, the vibration reduction mechanism also includes a plurality of damping springs fixedly connected to the bottom end of the N-stage electromagnetic plate, the other end of the damping spring is fixedly connected to the inner bottom wall of the vibration reduction frame, the bottom end of the vibration reduction frame is fixedly connected to the first piezoelectric ceramic plate, and the electrical signals of the first piezoelectric ceramic plate and the second piezoelectric ceramic plate are connected to the PLC controller to form a vibration detection circuit.

[0009] Preferably, the vibration reduction auxiliary mechanism includes an auxiliary frame fixedly connected to the inner walls on two opposite sides of the vibration reduction frame, the inner wall of the auxiliary frame is fixedly connected to an electromagnetic rectangular plate, the inner wall of the auxiliary frame is fixedly connected to a friction plate, the outer peripheral wall of the cycloid reducer body is fixedly connected to two groups of left-right symmetrical support frames, the other ends of the support frames are commonly fixedly connected to a magnetic iron plate, the magnetic iron plate is in contact with the friction plate, and the magnetic iron plate is magnetically attracted to the electromagnetic rectangular plate, the PLC controller is electrically connected to the N-level electromagnetic plate, the S-level electromagnetic plate, and the electromagnetic rectangular plate to form a vibration reduction circuit.

[0010] Preferably, a cooling mechanism is also included, which includes a refrigeration box fixedly connected to the outer wall of the chassis, the interior of the refrigeration box is filled with refrigeration water, a refrigeration plate is embedded in the inner wall of the refrigeration box, the heat dissipation end of the refrigeration plate faces the outside of the refrigeration box, a flat refrigeration tube is wound around the outer peripheral wall of the cycloid reducer body, the water inlet end and the water outlet end of the flat refrigeration tube are fixedly connected with a water inlet pipe and a water outlet pipe respectively, two water pumps are fixedly connected to the outer wall of the chassis, one of the water pumps has a water pumping end connected to the interior of the refrigeration box, and the water discharge end of the water pump is connected to the water inlet pipe, and the other water pumping end of the water pump is connected to the water outlet pipe, and the water discharge end of the water pump is connected to the interior of the refrigeration box, the flat refrigeration tube has a fixed groove, and the inner wall of the fixed groove is fixedly connected with two symmetrical elastic telescopic rods, the telescopic ends of the elastic telescopic rods are fixedly connected to the second piezoelectric ceramic sheet, and the PLC controller is electrically signal-connected to the two water pumps to form a cooling circuit.

[0011] Preferably, the adaptive noise reduction mechanism includes two fixed frames fixedly connected to the inner wall of the chassis, wherein the inner wall of one of the fixed frames is fixedly connected to the outer wall of the vibration reduction frame, and the inner wall of the other fixed frame is fixedly connected to the porous polyurethane foam, the two fixed frames are fixedly connected to four porous polyurethane foams, and the porous polyurethane foams are connected to each other, and a telescopic groove is provided on the outer wall of the telescopic groove, and the inner wall of the telescopic frame is fixedly connected to the porous polyurethane foam, and the outer wall of the telescopic frame is fixedly connected to a pull plate.

[0012] Preferably, the electret film is fixedly connected and installed on the inner wall of the chassis near the bottom end, and the electret film is connected with the PLC controller and the electrostrictive fiber electrical signal to form a noise reduction loop.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The vibration reduction mechanism detects vibration and generates electrical signals through the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet, and then transmits the generated electrical signals to the PLC controller, and then controls the current passed into the N-level electromagnetic plate and the S-level electromagnetic plate through the PLC controller to control the size of the magnetic field. By adjusting the magnetic field strength applied to the magnetorheological fluid, its viscosity and rigidity can be changed in real time. When the magnetic field is enhanced, the magnetic particles in the magnetorheological fluid will be arranged into a chain or columnar structure, making the liquid thicker and better absorbing and dispersing vibration energy. Under a strong magnetic field, it can even exhibit solid-like properties and effectively resist vibration. This adaptive adjustment capability enables the vibration reduction mechanism to adjust the vibration reduction effect in real time according to the vibration intensity, thereby significantly improving the running stability of the cycloid reducer and the comfort of the working environment.

[0014] 2. At the same time, the PLC controller controls the current passing through the electromagnetic rectangular plate in real time according to the vibration intensity. When the vibration force increases, the current passing through the rectangular electromagnetic plate will increase, thereby increasing the friction force between the friction plate and the magnetic iron plate, thereby assisting the cycloid reducer body in vibration reduction. This friction force can effectively absorb and dissipate vibration energy, thereby assisting the cycloid reducer body in vibration reduction.

[0015] 3. Use the electret film to detect the noise level. Since the electret film carries a permanent charge, the vibration caused by the sound wave will cause the membrane capacitance to change, and then generate an electrical signal. The detected noise level is proportional to the strength of the electrical signal. The PLC controller adjusts the current intensity of the electrostrictive fiber according to the electrical signal. When the noise is large, the controller increases the current to deform the electrostrictive fiber and change the foam pore structure. The larger the pores, the more likely it is to absorb low-frequency sound waves and optimize the sound propagation path and attenuation characteristics, thereby achieving a noise reduction effect. This allows for real-time noise detection and dynamic adjustment of the noise reduction effect, and effective noise absorption and suppression. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 5 The three-dimensional structure of the vibration damping frame of the present invention is shown in FIG. Figure 1 ; Figure 6 The three-dimensional structure of the vibration damping frame of the present invention is shown in FIG. Figure 2 ; Figure 7 For the present invention Figure 6 Enlarged view of part A.

[0018] Figure numerals: 1, frame; 2, chassis; 3, sealing plate; 4, vibration reduction frame; 5, cover plate; 6, mounting frame; 7, vibration reduction mechanism; 71, liquid capsule; 72, N-level electromagnetic plate; 73, S-level electromagnetic plate; 74, first piezoelectric ceramic plate; 75, second piezoelectric ceramic plate; 76, vibration reduction auxiliary mechanism; 761, auxiliary frame; 762, electromagnetic rectangular plate; 763, friction plate; 764, support frame; 765, magnetic iron plate; 77, damping spring; 8. Adaptive noise reduction mechanism; 81. Porous polyurethane foam; 82. Electret film; 83. Fixed frame; 84. Telescopic slot; 85. Telescopic frame; 86. Pull plate; 9. Cooling mechanism; 91. Refrigeration box; 92. Refrigeration plate; 93. Flat refrigeration pipe; 94. Water inlet pipe; 95. Water outlet pipe; 96. Water pump; 97. Fixed slot; 98. Elastic telescopic rod; 10. Cycloid reducer body; 101. Rotating shaft; 11. Adjustment slot; 12. Adjustment plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example: Refer to Figures 1 to 7 , an improved rack-type cycloid reducer, comprising: The top of the frame 1 is fixedly connected to a chassis 2, and the top of the chassis 2 has a placement opening, and a sealing plugging plate 3 is airtightly arranged in the placement opening, and two symmetrical fixed blocks are fixedly connected to the inner wall of the chassis 2, and a vibration damping frame 4 is fixedly connected to the opposite side of the fixed blocks, and a cover plate 5 is detachably arranged at the top entrance of the vibration damping frame 4, and the N-level electromagnetic plate 72 and the S-level electromagnetic plate 73 are both slidably connected to the inner wall of the vibration damping frame 4, and the top of the S-level electromagnetic plate 73 is fixedly connected to a magnetic isolation plate, and the top of the magnetic isolation plate is fixedly connected to two symmetrical mounting brackets 6, and the top of the mounting bracket 6 is fixedly connected to a cycloid reducer body 10; the cycloid reducer body 10 includes a rotating shaft 101 for driving, and the outer walls of the chassis 2 and the vibration damping frame 4 are provided with adjustment grooves 11, and the inner walls of the adjustment grooves 11 are airtightly slidably connected with an adjustment plate 12, and the rotating shaft 101 rotates and passes through the adjusting plate 12, so that the movement of the rotating shaft 101 of the cycloid reducer body 10 is not affected when the cycloid reducer body 10 moves for vibration reduction.

[0022] When the cycloid reducer main body 10 is running, the vibration reduction mechanism 7 is used to adaptively reduce the vibration of the cycloid reducer main body 10. Figure 5 , Figure 7 The vibration reduction mechanism 7 includes a liquid capsule 71 for vibration reduction, the liquid capsule 71 is filled with magnetorheological fluid, the bottom of the liquid capsule 71 is fixedly connected with an N-level electromagnetic plate 72, and the top of the liquid capsule 71 is fixedly connected with an S-level electromagnetic plate 73. The vibration reduction mechanism 7 also includes a first piezoelectric ceramic sheet 74 and a second piezoelectric ceramic sheet 75 for detecting vibration. The vibration reduction mechanism 7 also includes a vibration reduction auxiliary mechanism 76, and the vibration reduction auxiliary mechanism 76 uses friction force to adaptively assist vibration reduction. When the two piezoelectric ceramic sheets are subjected to external vibration or pressure changes, the internal crystal structure will produce a slight deformation. This deformation will cause the positive and negative charge centers to move relative to each other, thereby forming an electric potential difference at both ends of the material, that is, a voltage is generated. If wires are connected to both sides of the piezoelectric ceramic sheet, the potential difference formed will drive current through the external circuit; Among them, the vibration reduction mechanism 7 also includes a plurality of damping springs 77 fixedly connected to the bottom end of the N-level electromagnetic plate 72, the other end of the damping spring 77 is fixedly connected to the inner bottom wall of the vibration reduction frame 4, the bottom end of the vibration reduction frame 4 is fixedly connected to the first piezoelectric ceramic piece 74, and the electrical signals of the first piezoelectric ceramic piece 74 and the second piezoelectric ceramic piece 75 are connected to the PLC controller to form a vibration detection circuit.

[0023] Auxiliary vibration reduction is performed through the following specific structure, refer to Figure 5 The vibration reduction auxiliary mechanism 76 includes an auxiliary frame 761 fixedly connected to the inner walls of two opposite sides of the vibration reduction frame 4, the inner wall of the auxiliary frame 761 is fixedly connected with an electromagnetic rectangular plate 762, the inner wall of the auxiliary frame 761 is fixedly connected with a friction plate 763, the outer peripheral wall of the cycloid reducer body 10 is fixedly connected with two groups of left-right symmetrical support frames 764, the other ends of the support frames 764 are commonly fixedly connected with a magnetic iron plate 765, the magnetic iron plate 765 is in contact with the friction plate 763, and the magnetic iron plate 765 is magnetically attracted to the electromagnetic rectangular plate 762, the PLC controller is electrically connected with the N-level electromagnetic plate 72, the S-level electromagnetic plate 73, and the electromagnetic rectangular plate 762 to form a vibration reduction circuit.

[0024] By means of the adaptive noise reduction mechanism 8, when the cycloid reducer main body 10 is running, the cycloid reducer main body 10 is adaptively noise-reduced, referring to Figures 2 to 4 The adaptive noise reduction mechanism 8 includes a plurality of porous polyurethane foams 81 for absorbing noise, and the porous polyurethane foams 81 are embedded with electrostrictive fibers. The adaptive noise reduction mechanism 8 also includes an electret film 82 for detecting noise. The electret film 82 carries a permanent charge. When sound waves cause the film to vibrate, the capacitance change of the film will generate an electrical signal. This membrane structure makes the electret microphone very sensitive to sound waves. The adaptive noise reduction mechanism 8 includes two fixed frames 83 fixedly connected to the inner wall of the chassis 2, wherein the inner wall of one of the fixed frames 83 is fixedly connected to the outer wall of the vibration reduction frame 4, and the inner wall of the other fixed frame 83 is fixedly connected to the porous polyurethane foam 81, the two fixed frames 83 are fixedly connected to four porous polyurethane foams 81, and the porous polyurethane foams 81 are connected to each other, and a telescopic groove 84 is provided on the outer wall of the chassis 2 near the top, and a telescopic frame 85 is slidably connected to the inner wall of the telescopic groove 84, and the inner wall of the telescopic frame 85 is fixedly connected to the porous polyurethane foam 81, and the outer wall of the telescopic frame 85 is fixedly connected to a pull plate 86. The porous polyurethane foam 81 generally has good flexibility, light weight and porous structure, and is suitable for use in the fields of sound absorption, heat insulation and buffering.

[0025] In addition, the electret film 82 is fixedly connected and installed on the inner wall of the chassis 2 near the bottom. The electret film 82 is connected to the PLC controller and the electrostrictive fiber electrical signal to form a noise reduction circuit. The electrostrictive fiber can produce obvious deformation under the action of the electric field and is usually made of piezoelectric material or electrostrictive material.

[0026] The cycloid reducer body 10 is cooled by the cooling mechanism 9. Figure 1 , Figures 5 to 7 The cooling mechanism 9 includes a refrigeration box 91 fixedly connected to the outer wall of the chassis 2, the interior of the refrigeration box 91 is filled with refrigeration water, the inner wall of the refrigeration box 91 is embedded with a refrigeration plate 92, the heat dissipation end of the refrigeration plate 92 faces the outside of the refrigeration box 91, and the outer peripheral wall of the cycloid reducer body 10 is surrounded by a flat refrigeration pipe 93, the water inlet end and the water outlet end of the flat refrigeration pipe 93 are respectively fixedly connected to the water inlet pipe 94 and the water outlet pipe 95, and the outer wall of the chassis 2 is fixedly connected to two water pumps 96, and the water pumping end of one of the water pumps 96 is connected to the control system. The interior of the cold box 91 is connected, the drainage end of the water pump 96 is connected to the water inlet pipe 94, the water pumping end of another water pump 96 is connected to the water outlet pipe 95, and the drainage end of the water pump 96 is connected to the interior of the refrigeration box 91. The flat refrigeration tube 93 has a fixed groove 97, and the inner wall of the fixed groove 97 is fixedly connected to two symmetrical elastic telescopic rods 98. The telescopic ends of the elastic telescopic rods 98 are fixedly connected to the second piezoelectric ceramic piece 75. The PLC controller is connected to the electrical signals of the two water pumps 96 to form a cooling circuit.

[0027] The PLC controller has a current detection module.

[0028] The working principle of the present invention is as follows: First, the cycloid reducer body 10 needs to be placed in the vibration damping frame 4, and then the shaft 101 needs to pass through the adjustment plate 12, and then the cover plate 5 and the sealing plate 3 need to be closed, and then the telescopic frame 85 needs to be inserted into the telescopic slot 84, and then it can be moved to the place where it needs to be used; By using the cycloid reducer main body 10, the cycloid reducer main body 10 will generate vibration and noise due to the meshing and collision of the internal gears, so the vibration will be transmitted to the second piezoelectric ceramic piece 75 through the flat condenser tube. Through the piezoelectric effect, the second piezoelectric ceramic piece 75 will generate current after sensing the vibration, and then the generated current will be transmitted to the current detection module in the PLC controller. The current detection module detects the current size and then feeds back the vibration size. Since the gears, bearings, shafts and other components inside the cycloid reducer main body 10 will generate friction when running at high speed, the friction will consume part of the mechanical energy and convert it into heat energy, which will cause the temperature to rise. When the temperature rises, the components of the reducer will expand, including the gears, Bearings and housings, etc., if the thermal expansion coefficients of various components are different or heated unevenly, the gear meshing clearance and bearing clearance will change, and even cause deformation of components. The increase of these geometric errors will destroy the original motion balance and cause increased vibration and noise. Therefore, with the use of the cycloid reducer body 10, the vibration force may gradually increase. When the vibration force is large, the N-level electromagnetic plate 72 and the S-level electromagnetic plate 73 are energized through the PLC controller, and the magnetic field strength applied to the magnetorheological fluid is gradually increased. As the magnetic field increases, the magnetic particles in the magnetorheological fluid will begin to arrange along the direction of the magnetic field to form a chain or columnar structure. As the magnetic particles are arranged, the viscosity of the magnetorheological fluid will increase significantly. This increase in viscosity makes the liquid more "thick" and can better absorb and disperse vibration energy. As the viscosity increases, the rigidity of the magnetorheological fluid will also increase. Under a strong magnetic field, the magnetorheological fluid can even exhibit solid-like properties and can effectively resist vibration. Therefore, the vibration reduction mechanism 7 will adjust the intensity of the magnetic field in real time according to the intensity of the vibration to adaptively adjust the vibration reduction effect, and then further reduce the vibration through the damping spring 77; At the same time, the PLC controller controls the electromagnetic rectangular plate 762 to be energized. When the vibration force increases, the current flowing into the rectangular electromagnetic plate increases, thereby increasing the friction force on the friction plate 763 and the magnetic iron plate 765, thereby assisting the cycloid reducer body 10 in vibration reduction. This friction force can effectively absorb and dissipate vibration energy, thereby assisting the cycloid reducer body 10 in vibration reduction; Then, the vibration force after vibration reduction is detected in real time through the first piezoelectric ceramic plate 74. When the vibration force after vibration reduction is still large, the current passed through the electromagnetic rectangular plate 762, the N-level electromagnetic plate 72, and the S-level electromagnetic plate 73 is further increased through the PLC controller, thereby achieving effective vibration reduction.

[0029] The noise generated by vibration is absorbed by the porous polyurethane foam 81. Since the electret film 82 is outside the porous polyurethane foam 81, the noise detected by the electret film 82 is the absorbed noise. The electret film 82 carries a permanent charge. When the sound wave causes the film to vibrate, the capacitance change of the film will generate an electrical signal. This membrane structure makes the electret microphone very sensitive to sound waves. Therefore, the detected noise is proportional to the electrical signal generated by the capacitance change. The reason is that if the membrane displacement caused by the sound wave is X, the capacitance change is related to the displacement change. When X When the capacitance C increases, the output electrical signal strength will also increase. Therefore, when the detected electrical signal is large, the current passed into the electrostrictive fiber is increased through the PLC controller. After the electrostrictive fiber is energized, the deformation of the electrostrictive fiber will cause subtle changes in the overall structure of the foam. For example, the size, shape and distribution of the pores may be adjusted (the electrostrictive fiber is pre-set to increase with the increase of the power supply, thereby expanding the electrostrictive fiber in the electric field, causing the surrounding foam material to be stretched, thereby increasing the gap, and the larger the pore, the longer the path for the sound wave to propagate in the material, so that there are more opportunities to interact with the material and increase the loss of sound wave energy). Larger pores help absorb low-frequency sound waves (cycloid reducers are usually low-frequency sound wave noise when working). This dynamic adjustment can change the propagation path and attenuation characteristics of the sound in the foam, thereby completing the absorption of noise to achieve the effect of noise reduction.

[0030] The increase in noise and vibration in this process is mostly caused by the long-term use of the cycloid reducer body 10, which leads to increased internal temperature and increased vibration and noise. Therefore, the power of the water pump 96 is increased through the PLC controller (when the cycloid reducer body 10 is initially running, the water pump 96 and the refrigeration plate 92 have already started running), thereby increasing the flow rate of the cooling water in the flat refrigeration tube 93, thereby accelerating the cooling of the cycloid reducer body 10. The vibration and noise may be gradually reduced by cooling the cycloid reducer body 10. When it is detected that the noise and vibration have not decreased, it is possible that there is a problem with the cycloid reducer body 10, and the staff needs to repair it.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An improved rack-type cycloid reducer, characterized in that: include: A vibration reduction mechanism (7), the vibration reduction mechanism (7) comprising a liquid capsule (71) for vibration reduction, the liquid capsule (71) being filled with magnetorheological fluid, the bottom end of the liquid capsule (71) being fixedly connected to an N-class electromagnetic plate (72), the top end of the liquid capsule (71) being fixedly connected to an S-class electromagnetic plate (73), the vibration reduction mechanism (7) further comprising a first piezoelectric ceramic sheet (74) and a second piezoelectric ceramic sheet (75) for detecting vibration, the vibration reduction mechanism (7) further comprising a vibration reduction auxiliary mechanism (76), the vibration reduction auxiliary mechanism (76) using friction force to adaptively assist in vibration reduction; An adaptive noise reduction mechanism (8), the adaptive noise reduction mechanism (8) comprising a plurality of porous polyurethane foams (81) for absorbing noise, wherein electrostrictive fibers are embedded in the porous polyurethane foams (81), and the adaptive noise reduction mechanism (8) further comprises an electret film (82) for detecting noise.

2. An improved rack-type cycloid reducer according to claim 1, characterized in that: It also comprises a frame (1), the top of the frame (1) is fixedly connected to a chassis (2), the top of the chassis (2) has a placement opening, the placement opening is airtightly provided with a sealing blocking plate (3), the inner wall of the chassis (2) is fixedly connected to two symmetrical fixed blocks, the opposite sides of the fixed blocks are commonly fixedly connected to a vibration damping frame (4), a cover plate (5) is detachably provided at the top entrance of the vibration damping frame (4), the N-class electromagnetic plate (72) and the S-class electromagnetic plate (73) are both slidably connected to the inner wall of the vibration damping frame (4), the top of the S-class electromagnetic plate (73) is fixedly connected to a magnetic isolation plate, the top of the magnetic isolation plate is fixedly connected to two symmetrical mounting frames (6), and the top of the mounting frame (6) is fixedly connected to a cycloid reducer body (10).

3. An improved rack-type cycloid reducer according to claim 2, characterized in that: The cycloid reducer body (10) includes a rotating shaft (101) for driving, and the outer walls of the chassis (2) and the vibration damping frame (4) are both provided with adjustment grooves (11), the inner wall of the adjustment groove (11) is airtightly slidably connected to an adjustment plate (12), and the rotating shaft (101) rotates through the adjustment plate (12).

4. The improved rack-type cycloid reducer according to claim 2, characterized in that: The vibration reduction mechanism (7) further comprises a plurality of damping springs (77) fixedly connected to the bottom end of the N-level electromagnetic plate (72); the other end of the damping spring (77) is fixedly connected to the inner bottom wall of the vibration reduction frame (4); the bottom end of the vibration reduction frame (4) is fixedly connected to the first piezoelectric ceramic sheet (74); the first piezoelectric ceramic sheet (74) and the second piezoelectric ceramic sheet (75) are electrically connected to a PLC controller to form a vibration detection circuit.

5. The improved rack-type cycloid reducer according to claim 4, characterized in that: The vibration reduction auxiliary mechanism (76) comprises an auxiliary frame (761) fixedly connected to the inner walls of two opposite sides of the vibration reduction frame (4); an electromagnetic rectangular plate (762) is fixedly connected to the inner wall of the auxiliary frame (761); a friction plate (763) is fixedly connected to the inner wall of the auxiliary frame (761); two groups of left-right symmetrical support frames (764) are fixedly connected to the outer peripheral wall of the cycloid reducer body (10); the other ends of the support frames (764) are commonly fixedly connected to a magnetic iron plate (765); the magnetic iron plate (765) is in contact with the friction plate (763), and the magnetic iron plate (765) and the electromagnetic rectangular plate (762) are magnetically attracted to each other; the PLC controller is electrically signal-connected to the N-level electromagnetic plate (72), the S-level electromagnetic plate (73), and the electromagnetic rectangular plate (762) to form a vibration reduction circuit.

6. The improved rack-type cycloid reducer according to claim 4, characterized in that: The machine also includes a cooling mechanism (9), the cooling mechanism (9) including a refrigeration box (91) fixedly connected to the outer wall of the chassis (2), the interior of the refrigeration box (91) being filled with refrigeration water, a refrigeration plate (92) being embedded in the inner wall of the refrigeration box (91), the heat dissipation end of the refrigeration plate (92) facing the outside of the refrigeration box (91), a flat refrigeration tube (93) being wound around the outer peripheral wall of the cycloid reducer body (10), the water inlet end and the water outlet end of the flat refrigeration tube (93) being fixedly connected to a water inlet pipe (94) and a water outlet pipe (95) respectively, and two water pumps (96) being fixedly connected to the outer wall of the chassis (2), one of the water pumps being The water pumping end of the water pump (96) is connected to the inside of the refrigeration box (91), and the water discharge end of the water pump (96) is connected to the water inlet pipe (94); the water pumping end of the other water pump (96) is connected to the water outlet pipe (95), and the water discharge end of the water pump (96) is connected to the inside of the refrigeration box (91); the flat refrigeration tube (93) has a fixed groove (97); the inner wall of the fixed groove (97) is fixedly connected to two symmetrical elastic telescopic rods (98); the telescopic ends of the elastic telescopic rods (98) are fixedly connected to the second piezoelectric ceramic plate (75); the PLC controller is connected to the two water pumps (96) by electrical signals to form a cooling circuit.

7. The improved rack-type cycloid reducer according to claim 2, characterized in that: The adaptive noise reduction mechanism (8) comprises two fixed frames (83) fixedly connected to the inner wall of the chassis (2), wherein the inner wall of one of the fixed frames (83) is fixedly connected to the outer wall of the vibration reduction frame (4), and the inner wall of the other fixed frame (83) is fixedly connected to the porous polyurethane foam (81), the two fixed frames (83) are fixedly connected to four porous polyurethane foams (81), and the porous polyurethane foams (81) are connected to each other, and a telescopic groove (84) is provided on the outer wall of the chassis (2) near the top, and a telescopic frame (85) is slidably connected to the inner wall of the telescopic groove (84), the inner wall of the telescopic frame (85) is fixedly connected to the porous polyurethane foam (81), and the outer wall of the telescopic frame (85) is fixedly connected to a pull plate (86).

8. The improved rack-type cycloid reducer according to claim 4, characterized in that: The electret film (82) is fixedly connected and installed on the inner wall of the chassis (2) near the bottom end, and the electret film (82) is connected to the PLC controller and the electrostrictive fiber electrical signal to form a noise reduction loop.

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