Ultra-low-speed output hard tooth surface speed reducer for mill
By designing a dual heat dissipation mechanism in the reducer for mills, the problem of increasing temperature during gear meshing affecting accuracy is solved, and a more stable load and long-term operation is achieved.
Patent Information
- Application Number
- CN202411530315.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-02-14
AI Technical Summary
The existing hard-tooth surface reducer generates a high temperature due to friction during gear meshing, which affects the gear meshing accuracy and affects the load stability of the mill equipment.
Design an ultra-low speed output hard tooth surface reducer for mills, adopting a dual heat dissipation mechanism, including a first heat dissipation fan, a second heat dissipation fan and a third heat dissipation fan, and realizes bidirectional heat dissipation through the heat conduction pipe and fin structure to reduce gear meshing The temperature at the location.
It effectively reduces the temperature of the gear meshing position in the reducer, maintains a high meshing accuracy, and ensures the long-term normal operation and load stability of the mill equipment.
Smart Images
Figure CN119435643A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of reducers, in particular to an ultra-low speed output hard-tooth surface reducer for a grinding machine. Background Art
[0002] The hardened gear reducer is a common industrial transmission equipment used to reduce the speed of the driving mechanical device and provide the required torque output. Its characteristics are that the gears are made of hard materials (usually alloy steel) with high hardness and wear resistance, thus ensuring the stability of the transmission and long service life. For grinding equipment, in order to ensure the stable operation of the internal load, the reducer is needed to reduce the speed and increase the torque to provide it with power.
[0003] However, in the prior art, the hard-toothed reducer relies on the meshing of large and small gears to achieve speed reduction and torque increase. In order to ensure that the speed is reduced to a certain level, several meshing transmissions are required. When the two gears are meshed, more heat will accumulate in the meshing area due to friction, resulting in a higher temperature. The higher temperature will affect the meshing accuracy of the two gears for a long time, resulting in the load stability in the grinding equipment being affected. Summary of the invention
[0004] The purpose of the present invention is to provide an ultra-low speed output hard-tooth surface reducer for a mill, so as to solve the problem proposed in the above background technology that when two gears are meshed, more heat will accumulate in the meshing parts due to friction, resulting in a higher temperature, and the higher temperature will affect the meshing accuracy of the two gears for a long time, resulting in the load stability in the mill equipment being affected.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultra-low speed output hard-tooth surface reducer for a grinding mill, comprising an upper cover, a lower cover, an output shaft, an input shaft and an outer cover shell, a secondary helical gear is fixedly installed in the middle of the output shaft, a primary long shaft gear is meshedly connected to the outer side of the secondary helical gear, a dual heat dissipation mechanism is fixedly connected through the middle of the upper cover, the dual heat dissipation mechanism is located above the meshing position of the primary long shaft gear and the secondary helical gear, and is used for heat dissipation at the meshing position; The dual heat dissipation mechanism includes a first heat dissipation fan, a connecting plate, a heat pipe, a second heat dissipation fan, a third heat dissipation fan, fins and auxiliary components. A plurality of mutually parallel heat pipes penetrate a plurality of mutually parallel fins. The plurality of fins are divided into two groups. The second heat dissipation fan is located in the middle of the two groups of fins. The first heat dissipation fan and the third heat dissipation fan are respectively located on both sides of the two groups of fins. The connecting plate is fixedly connected to the lower ends of the plurality of mutually parallel heat pipes. The connecting plate is located at the meshing position of the primary long shaft gear and the secondary bevel gear.
[0006] Preferably, the auxiliary component comprises an outer frame, a support tube and a mounting plate, a side hole is provided in the middle of the outer frame, and a plurality of side convex seams are provided on both sides of one end of the outer frame.
[0007] Preferably, the first heat dissipation fan and the third heat dissipation fan are fixedly mounted on two ends of the outer frame, respectively, and the second heat dissipation fan is located in the middle of the two groups of mounting plates.
[0008] Preferably, the two groups of fins are respectively fixedly connected to the side surfaces of the two groups of mounting plates, and through holes are provided inside the mounting plates.
[0009] Preferably, the mounting plate is fixedly connected to the middle portion of the outer frame, and the outer frame is fixedly connected to the upper opening of the upper cover.
[0010] Preferably, the upper cover and the lower cover are fixedly connected by bolts, and both the upper cover and the lower cover are fixedly connected with a first end cover and a second end cover.
[0011] Preferably, the output shaft is rotatably mounted in the middle of the second end cover via a bearing, and the first-stage long shaft gear is rotatably mounted in the middle of the first end cover via a bearing.
[0012] Preferably, a conical toothed disc is fixedly mounted in the middle of the primary long shaft gear, and a conical gear is meshingly connected to the outer side of the conical toothed disc.
[0013] Preferably, the bevel gear is fixedly mounted on one end of the input shaft, and the outer side of the input shaft is rotatably connected to a sleeve via a bearing.
[0014] Preferably, the sleeve is fixedly installed in the middle position between the upper cover and the lower cover.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the wind speed direction of the first cooling fan and the second cooling fan is the same. The wind speed of the second cooling fan passes through the through hole, blows to one group of fins, and then is discharged outward through the first cooling fan. The wind speed direction of the third cooling fan is opposite to that of the second cooling fan, and the heat in the other group of fins is discharged to the other direction, and the air with lower outside temperature is supplemented to the other group of fins through the side convex seam. In this cycle, two-way heat dissipation is achieved, the temperature of the gear meshing position in the reducer is reduced, a high meshing accuracy is maintained, and the normal operation of the grinding mill equipment for a long time is ensured.
[0016] 2. In the present invention, after the reducer has been running for a long time, heat wraps around the connecting plate and part of the heat pipe located above the meshing position of the first-stage long shaft gear and the second-stage bevel gear and on one side of the conical gear plate. The connecting plate is made of metal silver. The heat is radiated to the connecting plate, and then conducted to the heat pipe made of aluminum, and finally spread to the fins made of metal copper. Multiple groups of heat pipes penetrate the connecting plate to improve the heat radiation efficiency, and the multiple fins are divided into two groups, which are respectively penetrated at both ends of the multiple groups of heat pipes to further improve the heat radiation range.
[0017] 3. In the present invention, the output shaft is connected to the mill, and the input shaft is connected to the power device. The input shaft is subjected to force and rotates in the sleeve with the help of two bearings. The length of the sleeve covers two-thirds of the input shaft, ensuring that the input shaft rotates stably, thereby driving the bevel gear to rotate. The bevel gear engages with the bevel gear plate, so that the bevel gear plate drives the first-stage long shaft gear to rotate between the two first end covers, wherein the pitch circle diameter of the bevel gear plate is larger than the pitch circle diameter of the bevel gear, so the first transmission forms a low-speed output, and the first-stage long shaft gear and the bevel gear plate rotate coaxially, the first-stage long shaft gear engages with the second-stage helical gear to rotate, and the second-stage helical gear drives the output shaft to rotate, and the power after speed reduction and torque increase is input into the mill equipment, wherein the pitch circle diameter of the second-stage helical gear is larger than the pitch circle diameter of the first-stage long shaft gear, so the second transmission forms an ultra-low-speed output on the basis of the first transmission, driving the load in the mill equipment to run stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 2 It is a partial three-dimensional structural schematic diagram of an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 3 It is a schematic diagram of the first three-dimensional structure of the interior of an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 4 It is a second three-dimensional structural schematic diagram of the interior of an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 5 This is a schematic diagram of the internal planar structure of an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 6 It is a first three-dimensional structural schematic diagram of a double heat dissipation mechanism in an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 7 It is a second three-dimensional structural schematic diagram of a double heat dissipation mechanism in an ultra-low speed output hard-tooth surface reducer for a grinding mill according to the present invention; Figure 8 The present invention is a schematic top plan view of the double heat dissipation mechanism in an ultra-low speed output hard-tooth surface reducer for a grinding mill.
[0019] In the figure: 1. upper cover; 2. lower cover; 3. output shaft; 4. input shaft; 5. outer cover shell; 6. double heat dissipation mechanism; 61. outer frame; 62. first heat dissipation fan; 63. side hole; 64. side convex seam; 65. connecting plate; 66. support pipe; 67. heat conduction pipe; 68. mounting plate; 69. through hole; 610. second heat dissipation fan; 611. third heat dissipation fan; 612. fin; 7. sleeve; 8. bevel gear; 9. bevel gear disc; 10. primary long shaft gear; 11. secondary bevel gear; 12. first end cover; 13. second end cover. DETAILED DESCRIPTION
[0020] 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 implementation regulations 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 creative work are within the scope of protection of the present invention.
[0021] Example 1: Reference Figure 1 - Figure 8 As shown: an ultra-low speed output hard-tooth surface reducer for a grinding mill, comprising an upper cover 1, a lower cover 2, an output shaft 3, an input shaft 4 and an outer cover shell 5, a secondary bevel gear 11 is fixedly installed in the middle of the output shaft 3, and a primary long shaft gear 10 is meshedly connected to the outer side of the secondary bevel gear 11, a dual heat dissipation mechanism 6 is passed through and fixedly connected to the middle of the upper cover 1, and the dual heat dissipation mechanism 6 is located above the meshing position of the primary long shaft gear 10 and the secondary bevel gear 11, and is used for heat dissipation at the meshing position, the dual heat dissipation mechanism 6 comprises a first heat dissipation fan 62, a connecting plate 65, a heat pipe 67, a second heat dissipation fan 610, a third heat dissipation fan 611, fins 612 and auxiliary components, a plurality of mutually parallel heat pipes 67 pass through a plurality of mutually parallel fins 612, a plurality of fins 612 are divided into two groups, the second heat dissipation fan 610 is located in the middle of the two groups of fins 612, and the first heat dissipation fan 6 2 and the third cooling fan 611 are respectively located on both sides of the two groups of fins 612, the connecting plate 65 is fixedly connected to the lower ends of multiple groups of parallel heat pipes 67, the connecting plate 65 is located at the meshing position of the first-stage long shaft gear 10 and the second-stage bevel gear 11, the auxiliary components include an outer frame 61, a support tube 66 and a mounting plate 68, a side hole 63 is opened in the middle of the outer frame 61, and multiple groups of side convex seams 64 are opened on both sides of one end of the outer frame 61, the first cooling fan 62 and the third cooling fan 611 are respectively fixedly installed at both ends of the outer frame 61, the second cooling fan 610 is located in the middle of the two groups of mounting plates 68, the two groups of fins 612 are respectively fixedly connected to the sides of the two groups of mounting plates 68, the inside of the mounting plate 68 is opened with a through hole 69, the mounting plate 68 is fixedly connected to the middle of the outer frame 61, and the outer frame 61 is fixedly connected to the upper opening of the upper cover 1.
[0022] In this embodiment, after the reducer has been running for a long time, heat is wrapped around the connecting plate 65 and part of the heat pipe 67 located above the meshing position of the first-stage long shaft gear 10 and the second-stage bevel gear 11 and on one side of the conical gear plate 9. The connecting plate 65 is made of metal silver. The heat is radiated to the connecting plate 65, and then conducted to the heat pipe 67 made of aluminum, and finally spread to the fins 612 made of metal copper, wherein multiple groups of heat pipes 67 penetrate the connecting plate 65 to improve the heat radiation efficiency, and the multiple fins 612 are divided into two groups, which are respectively penetrated at both ends of the multiple groups of heat pipes 67 to further improve the heat radiation range, the outer cover shell 5 is opened, the dual heat dissipation mechanism 6 is externally connected to the power supply, the first heat dissipation fan 62, the second heat dissipation fan 610 and the third heat dissipation fan 611 are powered on and rotated, and the first heat dissipation fan 62, the second heat dissipation fan 610 and the third heat dissipation fan 611 are powered on and rotated. The fan 62 and the third cooling fan 611 are respectively distributed on the outside of the two groups of fins 612, and the second cooling fan 610 is located in the middle of the two groups of fins 612. The wind speed direction of the first cooling fan 62 and the second cooling fan 610 is the same. The wind speed of the second cooling fan 610 passes through the through hole 69, blows to one group of fins 612, and then is discharged outward through the first cooling fan 62. The wind speed direction of the third cooling fan 611 is opposite to that of the second cooling fan 610, and the heat in the other group of fins 612 is discharged to the other direction, and the air with lower outside temperature is supplemented to the other group of fins 612 through the side convex slit 64. This cycle realizes two-way heat dissipation, reduces the temperature of the gear meshing position in the reducer, maintains a high meshing accuracy, and ensures the normal operation of the grinding equipment for a long time.
[0023] Embodiment 2: According to Figure 1 - Figure 5 As shown, the upper cover 1 and the lower cover 2 are fixedly connected by bolts, and both the upper cover 1 and the lower cover 2 are fixedly connected with the first end cover 12 and the second end cover 13, the output shaft 3 is rotatably mounted in the middle of the second end cover 13 through a bearing, the first-stage long shaft gear 10 is rotatably mounted in the middle of the first end cover 12 through a bearing, a bevel gear 9 is fixedly mounted in the middle of the first-stage long shaft gear 10, and a bevel gear 8 is meshedly connected to the outer side of the bevel gear 9, and the bevel gear 8 is fixedly mounted on one end of the input shaft 4, and a sleeve 7 is rotatably connected to the outer side of the input shaft 4 through a bearing, and the sleeve 7 is fixedly mounted in the middle position between the upper cover 1 and the lower cover 2.
[0024] In this embodiment, the output shaft 3 is connected to the mill, and the input shaft 4 is connected to the power device. The input shaft 4 is subjected to force to rotate in the sleeve 7 with the help of two bearings. The length of the sleeve 7 covers two-thirds of the input shaft 4, ensuring that the input shaft 4 rotates stably, thereby driving the bevel gear 8 to rotate. The bevel gear 8 engages with the bevel gear plate 9, so that the bevel gear plate 9 drives the primary long shaft gear 10 to rotate between the two first end covers 12, wherein the pitch circle diameter of the bevel gear plate 9 is larger than the pitch circle diameter of the bevel gear 8, so the first transmission forms a low-speed output, and the primary long shaft gear 10 and the bevel gear plate 9 rotate coaxially, and the primary long shaft gear 10 engages with the secondary bevel gear 11 to rotate, and the secondary bevel gear 11 drives the output shaft 3 to rotate, and the power after speed reduction and torque increase is input into the mill equipment, wherein the pitch circle diameter of the secondary bevel gear 11 is larger than the pitch circle diameter of the primary long shaft gear 10, so the second transmission forms an ultra-low speed output on the basis of the first transmission, driving the load in the mill equipment to run stably.
[0025] The use method and working principle of this device: when using the ultra-low speed output hard-toothed surface reducer for the mill, the output shaft 3 is connected to the mill, and the input shaft 4 is connected to the power device. The input shaft 4 is forced to rotate, thereby driving the bevel gear 8 to rotate, and the bevel gear 8 engages with the bevel gear disc 9, so that the bevel gear disc 9 drives the primary long shaft gear 10 to rotate, wherein the pitch circle diameter of the bevel gear disc 9 is larger than the pitch circle diameter of the bevel gear 8, so the first transmission forms a low-speed output, and the primary long shaft gear 10 and the bevel gear disc 9 rotate coaxially, the primary long shaft gear 10 engages with the secondary bevel gear 11 to rotate, and the secondary bevel gear 11 drives the output shaft 3 to rotate, and the power after speed reduction and torque increase is input into the mill equipment, wherein the pitch circle diameter of the secondary bevel gear 11 is larger than the pitch circle diameter of the primary long shaft gear 10, so the second transmission forms an ultra-low speed output on the basis of the first transmission, driving the load in the mill equipment to run stably, and after the reducer has been running for a long time, the heat package is located above the meshing position of the primary long shaft gear 10 and the secondary bevel gear 11 and located at the bevel gear The connecting plate 65 and part of the heat pipe 67 on one side of the toothed disc 9 are made of metal silver. The heat is radiated to the connecting plate 65, and then conducted to the heat pipe 67 made of aluminum, and finally spread to the fins 612 made of metal copper. The outer cover shell 5 is opened, and the dual heat dissipation mechanism 6 is connected to an external power supply. The first heat dissipation fan 62, the second heat dissipation fan 610 and the third heat dissipation fan 611 are powered on and rotated. The first heat dissipation fan 62 and the third heat dissipation fan 611 are respectively distributed on the outside of the two groups of fins 612, and the second heat dissipation fan 610 is located between the two groups of fins 612. In the middle position of the group of fins 612, the wind speed direction of the first cooling fan 62 and the second cooling fan 610 is the same. The wind speed of the second cooling fan 610 passes through the through hole 69, blows to one group of fins 612, and then is discharged outward through the first cooling fan 62. The wind speed direction of the third cooling fan 611 is opposite to that of the second cooling fan 610, and the heat in the other group of fins 612 is discharged to the other direction, and the air with lower outside temperature is supplemented to the other group of fins 612 through the side convex seam 64, and this cycle is repeated to achieve two-way heat dissipation.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An ultra-low speed output hardened gear reducer for a grinding mill, comprising an upper cover (1), a lower cover (2), an output shaft (3), an input shaft (4) and an outer cover shell (5), characterized in that: A secondary bevel gear (11) is fixedly mounted in the middle of the output shaft (3), a primary long shaft gear (10) is meshedly connected to the outer side of the secondary bevel gear (11), a dual heat dissipation mechanism (6) is fixedly connected through the middle of the upper cover (1), and the dual heat dissipation mechanism (6) is located above the meshing position of the primary long shaft gear (10) and the secondary bevel gear (11) and is used for heat dissipation at the meshing position; The dual heat dissipation mechanism (6) comprises a first heat dissipation fan (62), a connecting plate (65), a heat pipe (67), a second heat dissipation fan (610), a third heat dissipation fan (611), fins (612) and auxiliary components. A plurality of mutually parallel heat pipes (67) penetrate a plurality of mutually parallel fins (612). The plurality of fins (612) are divided into two groups. The second heat dissipation fan (610) is located in the middle of the two groups of fins (612). The first heat dissipation fan (62) and the third heat dissipation fan (611) are respectively located on both sides of the two groups of fins (612). The connecting plate (65) is fixedly connected to the lower ends of the plurality of mutually parallel heat pipes (67). The connecting plate (65) is located at the meshing position of the primary long shaft gear (10) and the secondary bevel gear (11).
2. The ultra-low speed output hardened gear reducer for a mill according to claim 1, characterized in that: The auxiliary component comprises an outer frame (61), a support tube (66) and a mounting plate (68); a side hole (63) is provided in the middle of the outer frame (61); and a plurality of side convex seams (64) are provided on both sides of one end of the outer frame (61).
3. The ultra-low speed output hardened gear reducer for a mill according to claim 2, characterized in that: The first heat dissipation fan (62) and the third heat dissipation fan (611) are respectively fixedly mounted on two ends of the outer frame (61), and the second heat dissipation fan (610) is located in the middle of the two groups of mounting plates (68).
4. The ultra-low speed output hardened gear reducer for a grinding mill according to claim 3, characterized in that: The two groups of fins (612) are respectively fixedly connected to the side surfaces of the two groups of mounting plates (68), and a through hole (69) is provided inside the mounting plate (68).
5. The ultra-low speed output hardened gear reducer for a grinding mill according to claim 4, characterized in that: The mounting plate (68) is fixedly connected to the middle portion of the outer frame (61), and the outer frame (61) is fixedly connected to the upper opening of the upper cover (1).
6. The ultra-low speed output hardened gear reducer for a grinding mill according to claim 5, characterized in that: The upper cover (1) and the lower cover (2) are fixedly connected by bolts, and both the upper cover (1) and the lower cover (2) are fixedly connected to a first end cover (12) and a second end cover (13).
7. The ultra-low speed output hardened gear reducer for a mill according to claim 6, characterized in that: The output shaft (3) is rotatably mounted in the middle of the second end cover (13) via a bearing, and the first-stage long-axis gear (10) is rotatably mounted in the middle of the first end cover (12) via a bearing.
8. The ultra-low speed output hardened gear reducer for a grinding mill according to claim 7, characterized in that: A conical toothed disc (9) is fixedly mounted in the middle of the primary long-axis gear (10), and a conical gear (8) is meshingly connected to the outer side of the conical toothed disc (9).
9. The ultra-low speed output hardened gear reducer for a grinding mill according to claim 8, characterized in that: The bevel gear (8) is fixedly mounted on one end of the input shaft (4), and the outer side of the input shaft (4) is rotatably connected to a sleeve (7) via a bearing.
10. The ultra-low speed output hard-tooth surface reducer for a grinding mill according to claim 9, characterized in that: The sleeve (7) is fixedly mounted at a middle position between the upper cover (1) and the lower cover (2).