Vibration absorption damping device for gearbox

Abstract

The utility model discloses a vibration absorption damping device for a gear box, which comprises a gear box base, a damping mechanism and a lubricating mechanism, the gear box base is fixedly connected with a gear box upper cover, and the gear box base is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft. The damping mechanism is arranged in the gearbox base; according to the vibration absorption damping device for the gear box, vibration is detected through a sensor, current is adjusted through a PLC, the magnetic field intensity is adjusted by changing the current of a magnet exciting coil, and magnetic particles in magnetorheological fluid in gaps can be arranged in the magnetic field direction to form a chain-shaped or columnar structure through the magnetic field intensity; according to the magnetorheological fluid damping device, the viscosity of the magnetorheological fluid is increased, so that damping force is generated, vibration energy is converted into heat energy and consumed, noise generated by vibration is reduced, the working environment of workers is improved, and the noise is effectively prevented from affecting physical and psychological health of the workers.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration absorption and damping, in particular to a vibration absorption and damping device for a gear box. Background Art

[0002] In mechanical engineering, the gearbox is the key link between the power source and the working parts. It can smoothly and efficiently transmit the power generated by the power source to the working parts. The gearbox changes the speed, transmits power and changes the torque to cope with different scenarios.

[0003] Vibrations are inevitable in the meshing transmission of gears inside the gearbox. These vibrations will not only affect the transmission accuracy of the gearbox, but may also cause increased wear of the gears, shorten fatigue life, and even cause damage and failure of the gears. In addition, the long-term noise generated by the gearbox will damage the operator's hearing, interfere with the operator's work communication, and affect the operator's mental health.

[0004] In the existing technology, lubricating oil is provided to generate a lubricating oil film between the gears to reduce friction. However, when the bevel gears inside the gearbox are vertically meshed, the force direction of the gear tooth surface has a certain angle with the axis of the gear, thereby generating axial force. During the long-term operation of the gearbox, the gears may cause axial displacement, thereby affecting the stability of the lubricating oil film.

[0005] To this end, the utility model provides a vibration absorbing and damping device for a gear box to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a vibration absorbing and damping device for a gear box, which solves the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vibration absorbing and damping device for a gearbox, comprising a gearbox base, to which a gearbox upper cover is fixedly connected, a first rotating shaft, a second rotating shaft, and a third rotating shaft are provided on the gearbox base, and further comprising a damping mechanism and a lubricating mechanism, wherein the damping mechanism is provided in the gearbox base, the lubricating mechanism is provided at a side end of the damping mechanism, and a sensor is provided inside the gearbox base;

[0008] The damping mechanism includes a damping housing and a connecting ring, wherein a damping upper cover is threadedly connected to the upper side of the damping housing, a damping lower cover is fixedly connected to the lower side of the damping housing, a liquid injection port is opened on the damping housing, a coil bracket is provided on the damping housing, an excitation coil is provided on the coil bracket, the connecting ring is fixedly connected to the second rotating shaft, a counterweight is provided between the connecting ring and the excitation coil, a gap is provided between the damping housing and the counterweight, a magnetorheological fluid is provided in the gap, and a bearing is provided on the second rotating shaft;

[0009] The lubrication mechanism includes a first fixed plate and a gear oil pump housing, the first fixed plate is fixedly connected to the inside of the gear box base, the side end of the first fixed plate is fixedly connected to an arc plate, a diverter is provided on the arc plate, the gear oil pump housing is fixedly connected to the gear oil pump housing at one end away from the first fixed plate, and the gear oil pump housing is provided with a first oil pump gear and a second oil pump gear.

[0010] Preferably, a third gear is fixedly connected to the second rotating shaft, a fourth gear is fixedly connected to the first rotating shaft, and the third gear is meshed with the fourth gear.

[0011] Preferably, a first bevel gear is fixedly connected to the third rotating shaft, an annular groove is provided inside the gear box base, a second bevel gear is fixedly connected to the second rotating shaft, and the outer side of the second bevel gear is meshed with the first bevel gear.

[0012] Preferably, the damping shell is fixedly connected to the second rotating shaft, the damping shell is arranged in the annular groove, and a first sealing ring is provided at a port of the damping shell close to the damping upper cover.

[0013] Preferably, the first oil pump gear is meshed with the second oil pump gear, a fourth rotating shaft is fixedly connected to the first oil pump gear, and a gear oil pump connecting cover is bolted to the gear oil pump housing.

[0014] Preferably, a second sealing ring is provided on the gear oil pump housing, a first infusion pipe and a second infusion pipe are connected to both sides of the gear oil pump housing, a slide groove is provided on the inner side of the gear box base, and a filter screen is slidably connected in the slide groove.

[0015] Preferably, the first infusion tube is connected to the diverter at one end away from the gear oil pump housing, the second infusion tube is connected to the filter at one end away from the gear oil pump housing, the first gear is fixedly connected to the fourth rotating shaft, the second gear is meshed with the outer side of the first gear, and the second gear is fixedly connected to the second rotating shaft. Beneficial effects

[0016] The utility model provides a vibration absorbing and damping device for a gearbox. Compared with the prior art, it has the following advantages:

[0017] (1) A vibration absorbing and damping device for a gearbox, which uses a PLC controller to adjust the current by detecting the vibration of the sensor, and adjusts the magnetic field strength by changing the current of the excitation coil. The magnetic field strength is used to make the magnetic particles in the magnetorheological fluid in the gap arrange along the direction of the magnetic field to form a chain or columnar structure, so that the viscosity of the magnetorheological fluid increases, thereby generating a damping force, and converting the vibration energy into heat energy and consuming it, thereby reducing the noise generated by vibration, improving the working environment of the staff, and preventing the noise from affecting the physical and mental health of the staff.

[0018] (2) A vibration absorbing and damping device for a gearbox, which delivers lubricating oil through a lubricating mechanism to reduce friction and wear between gears, thereby reducing vibration caused by friction between the third gear and the fourth gear, and uses lubricating oil to absorb and dissipate part of the vibration energy to reduce noise. It is combined with a filter and a filter to filter out iron chips and avoid the presence of iron chips in the lubricating oil, which causes contact between gears and iron chips, resulting in damage to the gears and the generation of large noise during subsequent gear meshing.

[0019] (3) A vibration absorbing and damping device for a gearbox, which reduces the impact of axial force on other components to a certain extent through the damping mechanism, thereby improving the stability of the lubricating oil film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the overall structure of the utility model;

[0021] Figure 2 This is a side view of the internal structure of the gearbox of the present invention;

[0022] Figure 3 This is an oblique side view of the internal structure of the gearbox of the present invention;

[0023] Figure 4 This is a side view of the lubrication mechanism portion of the utility model;

[0024] Figure 5 This is a partial structural diagram of the lubrication mechanism of the utility model;

[0025] Figure 6 It is a cross-sectional view of the damping mechanism of the utility model;

[0026] Figure 7 This utility model Figure 4 Partial side view of structure A.

[0027] In the figure, 1 is the gearbox base; 2 is the gearbox cover; 3 is the first rotating shaft; 4 is the second rotating shaft; 5 is the third rotating shaft;

[0028] Damping mechanism: 61, first bevel gear; 62, second bevel gear; 63, ring groove; 64, damping upper cover; 65, damping lower cover; 66, damping housing; 67, coil bracket; 68, gap; 69, connecting ring; 691, counterweight; 692, excitation coil; 693, liquid injection port; 694, first sealing ring; 695, bearing;

[0029] Lubrication mechanism: 71. First fixed plate; 72. Arc plate; 73. Diverter; 74. First infusion pipe; 75. Gear oil pump housing; 76. Gear oil pump connecting cover; 77. First oil pump gear; 78. Fourth rotating shaft; 79. Second oil pump gear; 791. Second infusion pipe; 792. Chute; 793. Filter screen; 794. Filter; 795. Second sealing ring; 796. First gear; 797. Second gear.

[0030] 8. Third gear; 9. Fourth gear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] See also Figure 1-7 A vibration absorbing and damping device for a gearbox includes a gearbox base 1, to which a gearbox upper cover 2 is fixedly connected. The gearbox base 1 is provided with a first rotating shaft 3, a second rotating shaft 4, and a third rotating shaft 5. The device also includes a damping mechanism and a lubricating mechanism. The damping mechanism is provided in the gearbox base 1, and the lubricating mechanism is provided at a side end of the damping mechanism. A sensor is provided inside the gearbox base 1.

[0034] The damping mechanism includes a damping housing 66 and a connecting ring 69. The damping upper cover 64 is threadedly connected to the upper side of the damping housing 66, and the damping lower cover 65 is fixedly connected to the lower side of the damping housing 66. The damping housing 66 is provided with a liquid injection port 693. The damping housing 66 is provided with a coil bracket 67, and the coil bracket 67 is provided with an excitation coil 692. The connecting ring 69 is fixedly connected to the second rotating shaft 4. A counterweight 691 is provided between the connecting ring 69 and the excitation coil 692. A gap 68 is provided between the damping housing 66 and the counterweight 691. Magnetorheological fluid is provided in the gap 68. A bearing 695 is provided on the second rotating shaft 4.

[0035] The lubrication mechanism includes a first fixed plate 71 and a gear oil pump housing 75. The first fixed plate 71 is fixedly connected to the inside of the gear box base 1. The side end of the first fixed plate 71 is fixedly connected to an arc plate 72. A diverter 73 is provided on the arc plate 72. The gear oil pump housing 75 is fixedly connected to the gear oil pump housing 75 at one end away from the first fixed plate 71. A first oil pump gear 77 and a second oil pump gear 79 are provided in the gear oil pump housing 75.

[0036] The second rotating shaft 4 is fixedly connected to a third gear 8 , the first rotating shaft 3 is fixedly connected to a fourth gear 9 , and the third gear 8 is meshed with the fourth gear 9 .

[0037] A first bevel gear 61 is fixedly connected to the third rotating shaft 5 , an annular groove 63 is provided inside the gearbox base 1 , a second bevel gear 62 is fixedly connected to the second rotating shaft 4 , and the outer side of the second bevel gear 62 is meshed with the first bevel gear 61 .

[0038] The damping housing 66 is fixedly connected to the second rotating shaft 4 . The damping housing 66 is disposed in the annular groove 63 . A first sealing ring 694 is disposed at a port of the damping housing 66 close to the damping upper cover 64 .

[0039] Working process: Use a tool to inject the magnetorheological fluid into the gap 68 through the injection port 693, then connect the damping cover 64 to the damping shell 66, and use the sensor to monitor the vibration of the shaft in real time, and transmit the signal to the PLC controller to adjust the current. By changing the current of the excitation coil 692, the magnetic field strength is adjusted, and the magnetic field strength is used to make the magnetic particles in the magnetorheological fluid in the gap 68 arrange along the direction of the magnetic field to form a chain or columnar structure, so that the viscosity of the magnetorheological fluid increases, thereby generating a damping force, and using the damping force to convert the vibration energy into heat energy and consume it, thereby reducing the noise caused by vibration.

[0040] The lubricating oil flowing onto the third gear 8 and the fourth gear 9 flows into the gear box base 1 through the obstruction of the first fixed plate 71 and the arc plate 72 due to the centrifugal force generated by the liquid flow and the rotation of the gears. The lubricating oil is then filtered twice through the filter screen 793 and the filter 794 to filter out iron chips and the like, thereby avoiding the presence of iron chips in the lubricating oil, causing contact between the gears and the iron chips, resulting in damage to the gears and generation of loud noise due to subsequent gear meshing.

[0041] Example 2:

[0042] See also Figure 1-7 This embodiment provides a technical solution for a vibration absorbing and damping device for a gearbox based on the first embodiment: the first oil pump gear 77 and the second oil pump gear 79 are meshed, the first oil pump gear 77 is fixedly connected to the fourth rotating shaft 78, and the gear oil pump connecting cover 76 is bolted to the gear oil pump housing 75.

[0043] A second sealing ring 795 is provided on the gear oil pump housing 75. The first infusion pipe 74 and the second infusion pipe 791 are connected to both sides of the gear oil pump housing 75. A slide groove 792 is provided on the inner side of the gear box base 1. A filter screen 793 is slidably connected in the slide groove 792.

[0044] The first infusion tube 74 is connected to the diverter 73 at one end away from the gear oil pump housing 75, and the second infusion tube 791 is connected to the filter 794 at one end away from the gear oil pump housing 75. The first gear 796 is fixedly connected to the fourth rotating shaft 78, and the second gear 797 is meshed with the outer side of the first gear 796. The second gear 797 is fixedly connected to the second rotating shaft 4.

[0045] Working process: When the third rotating shaft 5 rotates, it drives the first bevel gear 61 to rotate, and the first bevel gear 61 rotates to drive the second bevel gear 62 to rotate. The second bevel gear 62 rotates to drive the second rotating shaft 4 to rotate. The second rotating shaft 4 rotates through the third gear 8 and the fourth gear 9, so that the third rotating shaft 5 rotates. When the second rotating shaft 4 rotates, it drives the second gear 797 to rotate. The second gear 797 rotates to drive the first gear 796 to rotate. The first gear 796 rotates to drive the second oil pump gear 79 and the first oil pump gear 77 to rotate. The first oil pump gear 77 and the second oil pump gear 79 are meshed and transmitted. The lubricating oil is filtered through the filter 794 and passes through the second infusion pipe 791, the gear oil pump housing 75, the first infusion pipe 74 and the diverter 73 in sequence, so as to evenly deliver the lubricating oil to between the third gear 8 and the fourth gear 9. The lubricating oil is used to reduce the friction and wear between the gears, reduce the vibration caused by the friction between the third gear 8 and the fourth gear 9, and use the lubricating oil to absorb and dissipate part of the vibration energy to reduce noise.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration absorbing and damping device for a gearbox, comprising a gearbox base (1), a gearbox upper cover (2) fixedly connected to the gearbox base (1), a first rotating shaft (3), a second rotating shaft (4) and a third rotating shaft (5) provided on the gearbox base (1), characterized in that: It also includes a damping mechanism and a lubricating mechanism, wherein the damping mechanism is arranged in the gear box base (1), the lubricating mechanism is arranged at the side end of the damping mechanism, and a sensor is arranged inside the gear box base (1); The damping mechanism comprises a damping shell (66) and a connecting ring (69); the damping upper cover (64) is threadedly connected to the upper side of the damping shell (66); the damping lower cover (65) is fixedly connected to the lower side of the damping shell (66); a liquid injection port (693) is provided on the damping shell (66); a coil support (67) is provided on the damping shell (66); an excitation coil (692) is provided on the coil support (67); the connecting ring (69) is fixedly connected to the second rotating shaft (4); a counterweight (691) is provided between the connecting ring (69) and the excitation coil (692); a gap (68) is provided between the damping shell (66) and the counterweight (691); a magnetorheological fluid is provided inside the gap (68); and a bearing (695) is provided on the second rotating shaft (4); The lubricating mechanism comprises a first fixed plate (71) and a gear oil pump housing (75), wherein the first fixed plate (71) is fixedly connected to the inside of the gear box base (1), a side end of the first fixed plate (71) is fixedly connected to an arc plate (72), and a diverter (73) is provided on the arc plate (72), and an end of the gear oil pump housing (75) away from the first fixed plate (71) is fixedly connected to the gear oil pump housing (75), and a first oil pump gear (77) and a second oil pump gear (79) are provided in the gear oil pump housing (75).

2. A vibration absorbing and damping device for a gearbox according to claim 1, characterized in that: A third gear (8) is fixedly connected to the second rotating shaft (4), a fourth gear (9) is fixedly connected to the first rotating shaft (3), and the third gear (8) is meshingly connected to the fourth gear (9).

3. The vibration absorbing and damping device for a gearbox according to claim 1, characterized in that: A first bevel gear (61) is fixedly connected to the third rotating shaft (5), an annular groove (63) is provided inside the gearbox base (1), a second bevel gear (62) is fixedly connected to the second rotating shaft (4), and the outer side of the second bevel gear (62) is meshed with the first bevel gear (61).

4. The vibration absorbing and damping device for a gearbox according to claim 3, characterized in that: The damping housing (66) is fixedly connected to the second rotating shaft (4), the damping housing (66) is arranged in the annular groove (63), and a first sealing ring (694) is provided at a port of the damping housing (66) close to the damping upper cover (64).

5. The vibration absorbing and damping device for a gearbox according to claim 1, characterized in that: The first oil pump gear (77) is meshed with the second oil pump gear (79), a fourth rotating shaft (78) is fixedly connected to the first oil pump gear (77), and a gear oil pump connecting cover (76) is bolted to the gear oil pump housing (75).

6. The vibration absorbing and damping device for a gear box according to claim 5, characterized in that: A second sealing ring (795) is provided on the gear oil pump housing (75), and a first infusion pipe (74) and a second infusion pipe (791) are connected to both sides of the gear oil pump housing (75). A slide groove (792) is provided on the inner side of the gear box base (1), and a filter screen (793) is slidably connected in the slide groove (792).

7. The vibration absorbing and damping device for a gear box according to claim 6, characterized in that: One end of the first infusion tube (74) away from the gear oil pump housing (75) is in communication with the diverter (73); one end of the second infusion tube (791) away from the gear oil pump housing (75) is in communication with a filter (794); a first gear (796) is fixedly connected to the fourth rotating shaft (78); a second gear (797) is meshedly connected to the outer side of the first gear (796); and the second gear (797) is fixedly connected to the second rotating shaft (4).

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