A harmonic gear reducer

Abstract

The present invention relates to the technical field of reducers, and specifically to a harmonic gear reducer, comprising a fixed housing, a drive rod rotatably connected to the center position of the rear end of the inner surface of the fixed housing via a bearing, a front end of the drive rod passing through the fixed housing and connected to a motor, a drive gear slidably connected to the front end of the annular outer surface of the drive rod, and an adjustment mechanism fixedly connected to the front end outer surface of the drive gear. The present invention provides an adjustment mechanism, controls the contraction of an electric telescopic rod to drive the drive gear to move, thereby causing the drive gear to mesh with driven gears of different diameters to achieve the purpose of adjusting the output ratio of the motor, thereby improving the practicality of the reducer, and transmitting only through the mutual meshing of the drive gear and the driven gear, with a low friction coefficient, thereby reducing the output power of the motor and the probability of gear teeth breakage, thereby ensuring the normal operation of the reducer.

Description

Technical Field

[0001] The present invention relates to the technical field of speed reducers, and in particular to a harmonic gear speed reducer. Background Art

[0002] Gear reducers are widely used in East my country and are used for the slewing mechanism of tower crane machinery. They are widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical industry, textile, printing and dyeing, pharmaceutical and other fields. Gear reducers are suitable for low-speed and high-torque transmission equipment. The ratio of the number of teeth of large and small gears is the transmission ratio.

[0003] The gear reducer in the prior art is generally equipped with only one output shaft, that is, it can only adjust the output rate of the motor to a fixed size, thereby reducing the practicality of the reducer. Although there are reducers in the prior art that can achieve multi-stage adjustment, such reducers generally use multiple sets of gears to cooperate with each other to achieve the function of multi-stage output. Friction will be generated when multiple sets of gears are transmitted, which not only increases the output power of the motor, but also easily causes gear teeth to break, affecting the normal operation of the reducer.

[0004] Therefore, a harmonic gear reducer is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a harmonic gear reducer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a fixed shell, a drive rod is rotatably connected to the center position of the rear end of the inner surface of the fixed shell through a bearing, the front end of the drive rod passes through the fixed shell and is connected to the motor, the front end of the annular outer surface of the drive rod is slidably connected to the drive gear, and the front end outer surface of the drive gear is fixedly connected to an adjustment mechanism.

[0007] The present invention can achieve the purpose of adjusting the output ratio of the motor by setting an adjustment mechanism, thereby improving the practicality of the reducer. Since the friction force on the driving gear is small, the output power of the motor is reduced, the probability of gear teeth breakage is reduced, the maintenance frequency is reduced, and the normal operation of the reducer is ensured. In addition, it can achieve the purpose of driving two groups of working machines at the same time, thereby increasing the versatility of the device.

[0008] The transmission gears are connected with the drive gears through the guide wheels, and the guide wheels are connected with the first and second guide wheels respectively.

[0009] The fixing mechanism includes a connecting block, a sliding groove, a fixing rod and a fixing groove. The outer surface of one side of the connecting block is fixedly connected to the annular outer surface of the first output shaft. A sliding groove is provided on the inner side of the connecting block away from the first output shaft. The inner part of the sliding groove is slidably connected to the fixing rod. A fixing groove is provided on the rear end outer surface of the fixed shell near the fixing rod. The annular outer surface of the fixing rod and the annular inner surface of the fixing groove are both provided with matching threads.

[0010] When working, the gear reducer in the prior art is generally equipped with only one output shaft, that is, it can only adjust the output speed of the motor to a fixed size, thereby reducing the practicality of the reducer. Although there are reducers capable of multi-stage adjustment in the prior art, such reducers generally use multiple sets of gears to cooperate with each other to achieve the function of multi-stage output. Friction will be generated when multiple sets of gears are transmitted, which not only increases the output power of the motor, but also easily causes the gear teeth to break, affecting the normal operation of the reducer. When the present invention is working, the motor is started, the motor drives the drive rod to rotate, thereby driving the drive gear to rotate, and the drive gear The driven gear meshing with it is driven to rotate, thereby driving the first output shaft to rotate, and finally driving the main shaft of the working machine to rotate. By setting an adjusting mechanism, when it is necessary to change the output ratio of the motor, the main shaft of the working machine and the first output shaft are first separated from each other, and then the first output shaft is rotated to rotate the connecting block and the fixing rod, and at the same time, the driven gear connected to the first output shaft is driven to rotate. Under the action of the driven gear, the driving gear rotates accordingly. When the fixing rod is rotated to a position corresponding to the fixing groove, the fixing rod is rotated to make the fixing rod and the fixing groove threadedly connected to fix the first output shaft, and then the first output shaft to be output is rotated to make the first output shaft The output shaft drives the driven gear connected to it to rotate to the appropriate position and then stops, and the first output shaft is fixed, and the electric telescopic rod is started, so that the electric telescopic rod drives the driving gear to slide backward along the driving rod, so that the driving gear is separated from the original driven gear and meshes with another set of driven gears. The driven gear is connected to the first output shaft to be output. At this time, the first output shaft to be output is connected to the working machine, and the motor is started again. The motor drives the driving rod to rotate, thereby driving the driving gear to rotate, and the driving gear drives the driven gear meshed with it to rotate, thereby driving the first output shaft to rotate, and finally driving the main shaft of the working machine to rotate. The diameters of the gear and the driven gear to be output are not the same, so the purpose of adjusting the output ratio of the motor can be achieved by replacing the driven gear meshing with the driving gear. The present invention sets an adjustment mechanism and controls the contraction of the electric telescopic rod to drive the driving gear to move, so that the driving gear meshes with driven gears of different diameters to achieve the purpose of adjusting the output ratio of the motor, thereby improving the practicality of the reducer. The transmission is only carried out by the mutual meshing of the driving gear and the driven gear, so the friction coefficient is small, the output power of the motor is reduced, the probability of gear teeth breakage is reduced, the maintenance frequency is reduced, and the normal operation of the reducer is ensured.

[0011] Preferably, the annular outer surface of the first output shaft located on the left side of the driving rod is fixedly connected to the first driving bevel gear near the rear end of the driven gear, the left side of the outer surface of the first driving bevel gear is meshed with the first driven bevel gear, the left side of the first driven bevel gear is fixedly connected to the second output shaft, the left end of the second output shaft passes through the fixed housing and extends to the outside of the fixed housing, and the second output shaft and the fixed housing are rotatably connected via a bearing.

[0012] When working, since the output ends of multiple groups of first output shafts are all located at the rear end of the fixed housing, the connection direction is single, and two working machines cannot be connected at the same time, which reduces the versatility of the device. The present invention provides a first driving bevel gear and a first driven bevel gear. When it is necessary to connect two working machines at the same time, the first output shaft connected to the first driving bevel gear is first rotated to a suitable position and fixed, and then the driving gear is rotated to a suitable position, and the two groups of working machines are respectively connected to the second output shaft and the first output shaft to be output, and the electric telescopic rod is started. The electric telescopic rod drives the driving gear to move to mesh with the other driven gear. The driven gear is located directly in front of the first driving bevel gear, and the motor is started to drive the driving rod and the driven gear to rotate. At the same time, the first driving bevel gear rotates, thereby driving the first driven bevel gear to rotate, and finally the first output shaft and the second output shaft rotate simultaneously, driving the main shafts of the two groups of working machines to rotate. The present invention achieves the purpose of driving the two groups of working machines at the same time by providing the first driving bevel gear and the first driven bevel gear, thereby increasing the versatility of the device.

[0013] Preferably, a connecting plate is fixedly connected to the center position of the annular outer surface of the fixing rod, a spring is fixedly connected to the front end outer surface of the connecting plate, and the front end of the spring is fixedly connected to the sliding groove.

[0014] During operation, the present invention sets a spring and uses the elastic force of the spring to limit the fixing rod, thereby preventing the fixing rod from sliding and contacting the fixed housing during operation, thereby ensuring the normal operation of the reducer.

[0015] Preferably, the front end outer surface of the connecting plate is located outside the fixing rod and is rotatably connected to a movable ring via a bearing, and the rear end of the spring is fixedly connected to the movable ring.

[0016] During operation, the present invention provides a movable ring so that the spring and the movable ring are rotatably connected to the connecting plate through the bearing, thereby preventing the spring from being deformed by torsion when the connecting plate rotates with the fixed rod.

[0017] Preferably, the front end outer surface of the driving rod is fixedly connected with a second driven bevel gear, the right side of the outer surface of the second driven bevel gear is meshedly connected with a second driving bevel gear, and the right end of the second driving bevel gear is fixedly connected to the motor.

[0018] During operation, since the electric telescopic rod is provided at the front end of the fixed housing, it will hinder the motor. The present invention provides a second driving bevel gear and a second driven bevel gear to start the motor. The rotation of the motor drives the second driving bevel gear to rotate, and the second driving bevel gear drives the second driven bevel gear to rotate, thereby driving the driving rod to rotate. The present invention provides the second driving bevel gear and the second driven bevel gear to keep a certain distance between the motor and the electric telescopic rod, thereby preventing the electric telescopic rod from obstructing the motor.

[0019] Preferably, a support rod is fixedly connected to the left outer surface of the second driving bevel gear, and the left end outer surface of the support rod is rotatably connected to the fixed cylinder through a bearing.

[0020] During operation, the second driving bevel gear is supported by the support rod to prevent the second driving bevel gear from being deformed due to stress, thereby increasing the service life of the second driving bevel gear and ensuring the normal operation of the device.

[0021] Preferably, the rear end of the annular outer surface of the fixing rod and the rear end of the annular outer surface of the first output shaft are both fixedly connected with a second rotating ring.

[0022] During operation, the second rotating ring is provided to facilitate the rotation of the fixed rod and the first output shaft, thereby bringing convenience to the operation of the staff.

[0023] Preferably, the annular outer surface of the second rotating ring is provided with a rubber pad, and the outer surface of the rubber pad is provided with anti-slip grooves.

[0024] During operation, by providing a rubber pad and anti-skid patterns on the outer surface of the rubber pad, the friction between the hand and the second rotating ring is increased, making it easier for the operator to rotate the second rotating ring.

[0025] Preferably, a movable groove is provided at the inner center of the driving gear, and the movable groove and the cross section of the driving rod are regular hexagonal structures that match each other.

[0026] During operation, the movable groove matches the cross section of the driving rod in a regular hexagonal shape, preventing the driving rod from rotating relative to the driving gear when rotating, thereby ensuring the normal operation of the device.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention provides an adjustment mechanism and controls the contraction of the electric telescopic rod to drive the driving gear to move, so that the driving gear is engaged with driven gears of different diameters to achieve the purpose of adjusting the output ratio of the motor, thereby improving the practicality of the reducer. The transmission is only carried out by the mutual engagement of the driving gear and the driven gear, and the friction coefficient is small, which reduces the output power of the motor, reduces the probability of gear teeth breakage, reduces the maintenance frequency, and ensures the normal operation of the reducer. In addition, by providing a first driving bevel gear and a first driven bevel gear, the purpose of driving two groups of working machines at the same time is achieved, thereby increasing the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the fixed housing of the present invention;

[0031] Figure 3 This is a cross-sectional view of the internal structure of the fixed shell and the fixed cylinder of the present invention;

[0032] Figure 4 Schematic diagram of the combination of the electric telescopic rod and the driving gear of the present invention;

[0033] Figure 5 Schematic diagram of the combination of the connecting block and the fixing rod of the present invention;

[0034] Figure 6 This is a cross-sectional view of the connection block and the fixing rod of the present invention;

[0035] Figure 7 This is a cross-sectional view of the combination of the driving rod and the movable groove of the present invention.

[0036] In the figure: 1. fixed housing; 11. driving rod; 12. motor; 13. driving gear; 2. adjusting mechanism; 21. electric telescopic rod; 22. first output shaft; 23. driven gear; 24. first driving bevel gear; 25. first driven bevel gear; 26. second output shaft; 27. second driven bevel gear; 28. second driving bevel gear; 29. ​​supporting rod; 20. movable groove; 298. first rotating ring; 299. fixing cylinder; 3. fixing mechanism; 31. connecting block; 32. slide groove; 33. fixing rod; 34. fixing groove; 35. connecting plate; 36. spring; 37. movable ring; 38. second rotating ring; 4. working machine. DETAILED DESCRIPTION

[0037] The following is a partial embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] See also Figures 1 to 7 , the present invention provides a technical solution for a harmonic gear reducer:

[0041] A harmonic gear reducer, such as Figures 1 to 3 As shown, it includes a fixed shell 1, and the center position of the rear end of the inner surface of the fixed shell 1 is rotatably connected to a drive rod 11 through a bearing. The front end of the drive rod 11 passes through the fixed shell 1 and is connected to a motor 12. The front end of the annular outer surface of the drive rod 11 is slidably connected to a drive gear 13, and the front end outer surface of the drive gear 13 is fixedly connected to an adjustment mechanism 2.

[0042] The present invention can achieve the purpose of adjusting the output ratio of the motor 12 by setting the adjustment mechanism 2, thereby improving the practicality of the reducer. Since the friction force on the driving gear 13 is small, the output power of the motor 12 is reduced, the probability of gear teeth breakage is reduced, the maintenance frequency is reduced, and the normal operation of the reducer is ensured. In addition, it can achieve the purpose of driving two groups of working machines 4 at the same time, thereby increasing the versatility of the device.

[0043] As an embodiment of the present invention, Figures 1 to 6 As shown, the adjustment mechanism 2 includes two electric telescopic rods 21, a first output shaft 22, a driven gear 23, a first rotating ring 298 and a fixed cylinder 299. The front end outer surface of the driving gear 13 is rotatably connected to the first rotating ring 298 through a bearing. The front end outer surface of the first rotating ring 298 is symmetrically fixedly connected to the two electric telescopic rods 21 at the upper and lower ends. The front end outer surface of the electric telescopic rod 21 is fixedly connected to the fixed cylinder 299. The rear end outer surface of the fixed cylinder 299 is fixedly connected to the fixed shell 1. The rear end of the inner surface of the fixed shell 1 is located at the position outside the driving rod 11 through The bearing is rotatably connected to a plurality of first output shafts 22, the rear end of one of the first output shafts 22 being fixedly connected to the working machine 4, the rear ends of the plurality of first output shafts 22 passing through the rear end of the inner surface of the fixed housing 1 and extending to the outside of the fixed housing 1, the annular outer surfaces of the plurality of first output shafts 22 are fixedly connected to driven gears 23, the diameters of the plurality of driven gears 23 are different, and the plurality of driven gears 23 are staggered, and the annular outer surfaces of the plurality of first output shafts 22 are fixedly connected to a fixing mechanism 3 at a position near the rear end of the fixed housing 1;

[0044] The fixing mechanism 3 includes a connecting block 31, a sliding groove 32, a fixing rod 33 and a fixing groove 34. The outer surface of one side of the connecting block 31 is fixedly connected to the annular outer surface of the first output shaft 22. The inner side of the connecting block 31 away from the first output shaft 22 is provided with a sliding groove 32. The inner side of the sliding groove 32 is slidably connected with the fixing rod 33. The rear end outer surface of the fixed housing 1 is provided with a fixing groove 34 near the fixing rod 33. The annular outer surface of the fixing rod 33 and the annular inner surface of the fixing groove 34 are both provided with matching threads.

[0045] When working, the gear reducer in the prior art is generally equipped with only one output shaft, that is, it can only adjust the output speed of the motor 12 to a fixed size, thereby reducing the practicality of the reducer. Although there are reducers capable of multi-stage adjustment in the prior art, such reducers generally use multiple sets of gears to cooperate with each other to achieve the function of multi-stage output. Friction will be generated when multiple sets of gears are transmitted, which not only increases the output power of the motor 12, but also easily causes the gear teeth to break, affecting the normal operation of the reducer. When the present invention is working, the motor 12 is started, the motor 12 drives the drive rod 11 to rotate, thereby driving the drive gear 13 to rotate, and the drive gear 13 drives the driven gear 23 meshing with it to rotate. , thereby driving the first output shaft 22 to rotate, and finally driving the main shaft of the working machine 4 to rotate. By setting the adjustment mechanism 2, when it is necessary to change the output ratio of the motor 12, first separate the main shaft of the working machine 4 and the first output shaft 22 from each other, and then rotate the first output shaft 22 to rotate the connecting block 31 and the fixing rod 33, and at the same time drive the driven gear 23 connected to the first output shaft 22 to rotate. Under the action of the driven gear 23, the driving gear 13 rotates accordingly. When the fixing rod 33 rotates to a position corresponding to the fixing groove 34, the fixing rod 33 is rotated so that the fixing rod 33 is threadedly connected to the fixing groove 34 to fix the first output shaft 22, and then the first output shaft 22 to be output is rotated to drive the first output shaft 22 to be connected to it. After the connected driven gear 23 rotates to a suitable position, it stops and the first output shaft 22 is fixed. The electric telescopic rod 21 is started, so that the electric telescopic rod 21 drives the driving gear 13 to slide backward along the driving rod 11, so that the driving gear 13 is separated from the original driven gear 23 and meshes with another set of driven gears 23. The driven gear 23 is connected to the first output shaft 22 to be output. At this time, the first output shaft 22 to be output is connected to the working machine 4, and the motor 12 is started again. The motor 12 drives the driving rod 11 to rotate, thereby driving the driving gear 13 to rotate, and the driving gear 13 drives the driven gear 23 meshed with it to rotate, thereby driving the first output shaft 22 to rotate, and finally driving the main shaft of the working machine 4 to rotate. Since the diameters of the original driven gear 23 and the driven gear 23 to be output are not the same, the purpose of adjusting the output ratio of the motor 12 can be achieved by replacing the driven gear 23 meshing with the drive gear 13. The present invention sets an adjustment mechanism 2, and controls the contraction of the electric telescopic rod 21 to drive the drive gear 13 to move, so that the drive gear 13 is meshed with the driven gears 23 of different diameters to achieve the purpose of adjusting the output ratio of the motor 12, thereby improving the practicality of the reducer. Moreover, the transmission is only carried out through the mutual meshing of the drive gear 13 and the driven gear 23, and the friction coefficient is small, which reduces the output power of the motor 12, reduces the probability of gear teeth breakage, reduces the maintenance frequency, and ensures the normal operation of the reducer.

[0046] As an embodiment of the present invention, Figure 2 and Figure 3 As shown, the annular outer surface of the first output shaft 22 located on the left side of the driving rod 11 is fixedly connected to the first driving bevel gear 24 near the rear end of the driven gear 23, and the left side of the outer surface of the first driving bevel gear 24 is meshed with the first driven bevel gear 25. The left side of the first driven bevel gear 25 is fixedly connected to the second output shaft 26, and the left end of the second output shaft 26 passes through the fixed housing 1 and extends to the outside of the fixed housing 1. The second output shaft 26 is rotatably connected to the fixed housing 1 through a bearing.

[0047] During operation, since the output ends of the multiple groups of first output shafts 22 are all located at the rear end of the fixed housing 1, the connection direction is single and two working machines 4 cannot be connected at the same time, which reduces the versatility of the device. The present invention sets a first driving bevel gear 24 and a first driven bevel gear 25. When it is necessary to connect two working machines 4 at the same time, the first output shaft 22 connected to the first driving bevel gear 24 is first rotated to a suitable position and fixed, and then the driving gear 13 is rotated to a suitable position, and the two groups of working machines 4 are respectively connected to the second output shaft 26 and the first output shaft 22 to be output, and the electric telescopic rod 21 is started. The electric telescopic rod 2 The driving gear 13 is driven to move to mesh with another driven gear 23, which is located directly in front of the first driving bevel gear 24. The motor 12 is started, driving the driving rod 11 and the driven gear 23 to rotate. At the same time, the first driving bevel gear 24 rotates, thereby driving the first driven bevel gear 25 to rotate, and finally causing the first output shaft 22 and the second output shaft 26 to rotate simultaneously, driving the main shafts of the two groups of working machines 4 to rotate. The present invention achieves the purpose of driving the two groups of working machines 4 at the same time by providing the first driving bevel gear 24 and the first driven bevel gear 25, thereby increasing the versatility of the device.

[0048] As an embodiment of the present invention, Figure 6 As shown, a connecting plate 35 is fixedly connected to the center position of the annular outer surface of the fixing rod 33 , a spring 36 is fixedly connected to the front end outer surface of the connecting plate 35 , and the front end of the spring 36 is fixedly connected to the sliding groove 32 .

[0049] During operation, the present invention sets a spring 36 and uses the elastic force of the spring 36 to limit the fixing rod 33, thereby preventing the fixing rod 33 from sliding and contacting the fixed housing 1 during operation, thereby ensuring the normal operation of the reducer.

[0050] As an embodiment of the present invention, Figure 6As shown, the front end outer surface of the connecting plate 35 is located outside the fixing rod 33 and is rotatably connected to a movable ring 37 through a bearing, and the rear end of the spring 36 is fixedly connected to the movable ring 37 .

[0051] During operation, the present invention sets a movable ring 37 so that the spring 36 and the movable ring 37 are rotatably connected to the connecting plate 35 through a bearing, thereby preventing the spring 36 from being deformed by torsion when the connecting plate 35 rotates with the fixed rod 33.

[0052] As an embodiment of the present invention, Figure 3 As shown, the front end outer surface of the driving rod 11 is fixedly connected to the second driven bevel gear 27, the right side of the outer surface of the second driven bevel gear 27 is meshed with the second driving bevel gear 28, and the right end of the second driving bevel gear 28 is fixedly connected to the motor 12.

[0053] During operation, since the front end of the fixed housing 1 is provided with an electric telescopic rod 21, it will hinder the motor 12. The present invention starts the motor 12 by providing a second driving bevel gear 28 and a second driven bevel gear 27. The rotation of the motor 12 drives the second driving bevel gear 28 to rotate, and the second driving bevel gear 28 drives the second driven bevel gear 27 to rotate, thereby driving the driving rod 11 to rotate. The present invention maintains a certain distance between the motor 12 and the electric telescopic rod 21 by providing the second driving bevel gear 28 and the second driven bevel gear 27, thereby preventing the electric telescopic rod 21 from obstructing the motor 12.

[0054] As an embodiment of the present invention, Figure 3 As shown, the left outer surface of the second driving bevel gear 28 is fixedly connected to a support rod 29 , and the left end outer surface of the support rod 29 is rotatably connected to a fixed cylinder 299 through a bearing.

[0055] During operation, the support rod 29 is provided to support the second driving bevel gear 28 to prevent the second driving bevel gear 28 from being deformed due to force, thereby increasing the service life of the second driving bevel gear 28 and ensuring the normal operation of the device.

[0056] As an embodiment of the present invention, Figure 5 As shown, the rear ends of the annular outer surfaces of the fixing rod 33 and the first output shaft 22 are both fixedly connected with a second rotating ring 38 .

[0057] During operation, the second rotating ring 38 is provided to facilitate the rotation of the fixing rod 33 and the first output shaft 22, thereby bringing convenience to the operation of the staff.

[0058] As an embodiment of the present invention, Figure 5As shown, a rubber pad is provided on the annular outer surface of the second rotating ring 38 , and anti-slip grooves are provided on the outer surface of the rubber pad.

[0059] During operation, by providing a rubber pad and providing anti-skid patterns on the outer surface of the rubber pad, the friction between the hand and the second rotating ring 38 is increased, making it easier for the operator to rotate the second rotating ring 38.

[0060] As an embodiment of the present invention, Figure 7 As shown, a movable groove 20 is provided at the inner center of the driving gear 13 , and the movable groove 20 and the driving rod 11 have a regular hexagonal cross-section that matches each other.

[0061] During operation, the movable groove 20 matches the cross section of the driving rod 11 in a regular hexagonal shape, thereby preventing the driving rod 11 from rotating relative to the driving gear 13, thereby ensuring the normal operation of the device.

[0062] Usage method: When the present invention is working, the motor 12 is started, the motor 12 drives the driving rod 11 to rotate, thereby driving the driving gear 13 to rotate, the driving gear 13 drives the driven gear 23 meshing therewith to rotate, thereby driving the first output shaft 22 to rotate, and finally driving the main shaft of the working machine 4 to rotate. By setting the adjustment mechanism 2, when it is necessary to change the output ratio of the motor 12, the main shaft of the working machine 4 and the first output shaft 22 are first separated from each other, and then the first output shaft 22 is rotated to rotate the connecting block 31 and the fixing rod 33, and at the same time, the driven gear 23 connected to the first output shaft 22 is driven to rotate, and under the action of the driven gear 23, the driving gear 13 is rotated. Rotate, when the fixing rod 33 is rotated to correspond to the position of the fixing groove 34, the fixing rod 33 is rotated so that the fixing rod 33 is threadedly connected to the fixing groove 34 to fix the first output shaft 22, and then the first output shaft 22 to be output is rotated so that the first output shaft 22 drives the driven gear 23 connected thereto to rotate to a suitable position and then stops, and the first output shaft 22 is fixed, and the electric telescopic rod 21 is started so that the electric telescopic rod 21 drives the driving gear 13 to slide backward along the driving rod 11, so that the driving gear 13 is separated from the original driven gear 23 and meshes with another set of driven gears 23, and the driven gear 23 is connected to the first output shaft 22 to be output. At this time, the first output shaft to be output is The shaft 22 is connected to the working machine 4, and then the motor 12 is started. The motor 12 drives the driving rod 11 to rotate, thereby driving the driving gear 13 to rotate, and the driving gear 13 drives the driven gear 23 meshing with it to rotate, thereby driving the first output shaft 22 to rotate, and finally driving the main shaft of the working machine 4 to rotate. Since the original driven gear 23 and the driven gear 23 to be output are of different diameters, the output ratio of the motor 12 can be adjusted by replacing the driven gear 23 meshing with the driving gear 13. By setting the first driving bevel gear 24 and the first driven bevel gear 25, when two working machines 4 need to be connected at the same time, first the first output connected to the first driving bevel gear 24 is connected. The output shaft 22 is rotated to a suitable position and fixed, and then the driving gear 13 is rotated to a suitable position, and the two groups of working machines 4 are respectively connected to the second output shaft 26 and the first output shaft 22 to be output, and the electric telescopic rod 21 is started. The electric telescopic rod 21 drives the driving gear 13 to move to engage with another driven gear 23. The driven gear 23 is located directly in front of the first driving bevel gear 24. The motor 12 is started to drive the driving rod 11 and the driven gear 23 to rotate. At the same time, the first driving bevel gear 24 rotates, thereby driving the first driven bevel gear 25 to rotate, and finally the first output shaft 22 and the second output shaft 26 rotate at the same time, driving the main shafts of the two groups of working machines 4 to rotate.

[0063] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the purpose of this technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more compatible with and in line with the technical solution of the present invention. It is a technical solution for the best application of this technical solution. The model of its product can be replaced and modified according to the technical parameters required. It is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0064] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A harmonic gear reducer, comprising a fixed housing (1), characterized in that: A driving rod (11) is rotatably connected to the center of the rear end of the inner surface of the fixed housing (1) via a bearing, the front end of the driving rod (11) passes through the fixed housing (1) and is connected to the motor (12), the front end of the annular outer surface of the driving rod (11) is slidably connected to a driving gear (13), and the front end outer surface of the driving gear (13) is fixedly connected to the adjustment mechanism (2); The adjusting mechanism (2) comprises two electric telescopic rods (21), a first output shaft (22), a driven gear (23), a first rotating ring (298) and a fixed cylinder (299); the front end outer surface of the driving gear (13) is rotatably connected to the first rotating ring (298) via a bearing; the front end outer surface of the first rotating ring (298) is symmetrically fixedly connected to the two electric telescopic rods (21) at the upper and lower ends; the front end outer surface of the electric telescopic rod (21) is fixedly connected to the fixed cylinder (299); the rear end outer surface of the fixed cylinder (299) is fixedly connected to the fixed housing (1); the rear end of the inner surface of the fixed housing (1) is located outside the driving rod (11) and is rotatably connected to a plurality of first output shafts (22) via bearings; the rear end of one of the first output shafts (22) is fixedly connected to the working machine (4); the rear ends of the plurality of first output shafts (22) pass through the rear end of the inner surface of the fixed housing (1) and extend to the outside of the fixed housing (1); The annular outer surface of each of the first and second output shafts (22) is fixedly connected to a driven gear (23), the diameters of the driven gears (23) are different, and the driven gears (23) are staggered. The annular outer surfaces of the first output shafts (22) are fixedly connected to a fixing mechanism (3) at a position close to the rear end of the fixed housing (1); the fixing mechanism (3) comprises a connecting block (31), a sliding groove (32), a fixing rod (33) and a fixing groove (34). The outer surface of one side of the connecting block (31) is fixedly connected to the annular outer surface of the first output shaft (22), a sliding groove (32) is provided on the inner side of the connecting block (31) away from the first output shaft (22), and the inner side of the sliding groove (32) is slidably connected to the fixing rod (33), and a fixing groove (34) is provided on the outer surface of the rear end of the fixed housing (1) near the fixing rod (33). The annular outer surface of the fixing rod (33) and the annular inner surface of the fixing groove (34) are both provided with matching threads. A first driving bevel gear (24) is fixedly connected to the annular outer surface of the first output shaft (22) located on the left side of the driving rod (11) near the rear end of the driven gear (23); a first driven bevel gear (25) is meshedly connected to the left side of the outer surface of the first driving bevel gear (24); a second output shaft (26) is fixedly connected to the left side of the first driven bevel gear (25); a left end of the second output shaft (26) passes through the fixed housing (1) and extends to the outside of the fixed housing (1); the second output shaft (26) is rotatably connected to the fixed housing (1) via a bearing; The driven gear (23) is located in front of the first driving bevel gear (24). When the motor (12) is started, the driving rod (11) and the driven gear (23) are driven to rotate. At the same time, the first driving bevel gear (24) is rotated, thereby driving the first driven bevel gear (25) to rotate. Finally, the first output shaft (22) and the second output shaft (26) are rotated at the same time, driving the main shafts of the two sets of working machines (4) to rotate.

2. The harmonic gear reducer according to claim 1, characterized in that: A connecting plate (35) is fixedly connected to the center of the annular outer surface of the fixing rod (33), a spring (36) is fixedly connected to the front outer surface of the connecting plate (35), and the front end of the spring (36) is fixedly connected to the sliding groove (32).

3. The harmonic gear reducer according to claim 2, characterized in that: The front end outer surface of the connecting plate (35) is located outside the fixed rod (33) and is rotatably connected to a movable ring (37) via a bearing. The rear end of the spring (36) is fixedly connected to the movable ring (37).

4. The harmonic gear reducer according to claim 1, characterized in that: The front end outer surface of the driving rod (11) is fixedly connected to a second driven bevel gear (27), the right side of the outer surface of the second driven bevel gear (27) is meshedly connected to a second driving bevel gear (28), and the right end of the second driving bevel gear (28) is fixedly connected to the motor (12).

5. The harmonic gear reducer according to claim 4, characterized in that: The left outer surface of the second driving bevel gear (28) is fixedly connected to a support rod (29), and the left end outer surface of the support rod (29) is rotatably connected to a fixed cylinder (299) through a bearing.

6. The harmonic gear reducer according to claim 4, characterized in that: The rear end of the annular outer surface of the fixing rod (33) and the rear end of the annular outer surface of the first output shaft (22) are both fixedly connected to a second rotating ring (38).

7. The harmonic gear reducer according to claim 6, characterized in that: The annular outer surface of the second rotating ring (38) is provided with a rubber pad, and the outer surface of the rubber pad is provided with anti-slip grooves.

8. The harmonic gear reducer according to claim 4, characterized in that: A movable groove (20) is provided at the inner center of the driving gear (13), and the movable groove (20) and the driving rod (11) have a regular hexagonal cross-section that matches each other.

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