Planetary gear reducer with self-adaptive fastening planet carrier
阅读说明:本技术 行星架自适型紧固的行星齿轮减速机 (Planetary gear reducer with self-adaptive fastening planet carrier ) 是由 屠科慧 奚尧舜 于 2020-07-10 设计创作,主要内容包括:本发明公开了一种行星架自适型紧固的行星齿轮减速机,包括行星架,行星架包括一半盘和二半盘,一半盘和二半盘之间设有限位架和牵拉板,限位架与一半盘固定,限位架一端设有插接板,插接板和牵拉板均设有紧固口,二半盘设有滑动槽、插接槽和牵拉槽,滑动槽内设有紧固装置,紧固装置包括壳体、配重件和紧固斜面。利用紧固装置的配重件,在行星架高速旋转时,对配重件施加离心力,使得离心力牵拉紧固装置,使紧固斜面较厚的一端挤压至紧固口,从而使得插接板和牵拉板在转速越高时,越能提供更大的挤压力,使得行星架的外端部和内端部均有足够的夹紧力,使得行星齿轮内外端受力更为均匀,降低行星齿轮转动时的振动。(The invention discloses a planetary gear reducer with a self-adaptive fastening planetary carrier, which comprises a planetary carrier, wherein the planetary carrier comprises a half disc and a half disc, a limiting frame and a traction plate are arranged between the half disc and the half disc, the limiting frame is fixed with the half disc, one end of the limiting frame is provided with an insertion plate, the insertion plate and the traction plate are respectively provided with a fastening port, the half disc is provided with a sliding groove, an insertion groove and a traction groove, a fastening device is arranged in the sliding groove, and the fastening device comprises a shell, a balance weight part and a fastening inclined plane. Utilize fastener's counterweight, when the planet carrier is high-speed rotatory, exert centrifugal force to the counterweight for centrifugal force tractive fastener makes the thicker one end of fastening inclined plane extrude to the fastening mouth, thereby makes plugboard and tractive board when the rotational speed is higher, can provide bigger extrusion force more, makes the outer tip of planet carrier and interior tip all have sufficient clamp force, makes the interior outer end atress of planetary gear more even, vibration when reducing planetary gear and rotating.)
1. The utility model provides a planetary gear reducer of planet carrier self-adaptation type fastening, includes cylinder body and planet carrier, the planet carrier is located inside the cylinder body, and the planet carrier includes half dish (1) and half dish (2) of two, its characterized in that:
a limiting frame (10) and a traction plate (19) are fixed on the surface of the first half disc (1), the limiting frame (10) and the traction plate (19) face the second half disc (2), an inserting plate (11) is arranged at one end of the limiting frame (10) facing the second half disc (2), fastening ports (12) are arranged in the middle of the inserting plate (11) and the traction plate (19),
the two half discs (2) are provided with sliding grooves (20), the sliding grooves (20) are positioned on the surfaces, back to the first half disc (1), of the two half discs (2), the bottoms of the sliding grooves (20) are provided with inserting grooves (21) and drawing grooves (29), the inserting grooves (21) and the drawing grooves (29) penetrate through the two half discs (2), the positions of the inserting grooves (21) correspond to the inserting plates (11), and the positions of the drawing grooves (29) correspond to the drawing plates (19);
a fastening device (3) is arranged in the sliding groove (20), the fastening device (3) comprises a shell (35), a counterweight (31) and a fastening inclined plane (30), the fastening inclined plane (30) faces to one side surface of the fastening port (12) back to the two half discs (2), the fastening inclined plane (30) is located on the surface of the shell (35), and the thickness of the inner end of the fastening inclined plane (30) is larger than that of the outer end of the fastening inclined plane;
the surface of the fastening opening (12) contacted with the fastening inclined surface (30) is a pressing surface, and the pressing surfaces at the fastening opening (12) of the inserting plate (11) and the traction plate (19) are in the same plane;
the fastening device (3) penetrates through the insertion plate (11) and the fastening opening (12) of the traction plate (19), the pressing surface contacts with the fastening inclined surface (30) of the fastening device (3), and the bottom of the sliding groove (20) contacts with the lower part of the fastening device (3);
the inserting plate (11) is inserted into the inserting groove (21), the pulling plate (19) is inserted into the pulling groove (29), and the fastening device (3) penetrates through the inserting plate (11) and the fastening port (12) of the pulling plate (19) and is pressed in the sliding groove (20).
2. A planet carrier-adaptively fastened planetary gear reducer according to claim 1, wherein: the planet carrier is provided with three groups of planet gears, and the sliding groove (20) and the fastening device (3) are positioned between two adjacent groups of planet gears.
3. A planet carrier-adaptively fastened planetary gear reducer according to claim 1, wherein: the surface of the two half discs (2) is also provided with a counterweight groove (13), a fastening device (3) is arranged in the counterweight groove (13), the fastening device (3) in the counterweight groove (13) has the same structure as the fastening device (3) in the sliding groove (20), the surface of the counterweight groove (13) is provided with a fixing plate (14), and the fixing plate (14) compresses and fixes the fastening device (3) in the counterweight groove (13).
4. A planet carrier-adaptively fastened planetary gear reducer according to claim 1, wherein: the traction plate (19), the limiting frame (10) and the inserting plate (11) are integrally formed with the half disc (1).
5. A planet carrier-adaptively fastened planetary gear reducer according to claim 1, wherein: the fastening device (3) further comprises a telescopic rod (32), a fastening spring (34) and a limiting part (33), the telescopic rod (32), the fastening spring (34) and the limiting part (33) are all located inside the shell (35), two ends of the telescopic rod (32) are connected with the weight part (31) and the limiting part (33) respectively, and the surface of the telescopic rod (32) is sleeved with the fastening spring (34).
6. A planet carrier-adaptively fastened planetary gear reducer according to claim 4, wherein: the weight piece (31) is a roller, and the middle part of the weight piece (31) is pivoted at the end part of the telescopic rod (32).
7. A planet carrier-adaptively fastened planetary gear reducer according to claim 6, wherein: the weight (31) is cylindric, and weight (31) arc surface is equipped with rubber arch (312) and metal arch (311), rubber arch (312) and metal arch (311) annular array in turn set up on weight (31) surface, rubber arch (312) height is greater than metal arch (311) height.
8. A planet carrier-adaptively fastened planetary gear reducer according to claim 7, wherein: the outer end surface of the metal protrusion (311) is arc-shaped, and the outer end surface of the metal protrusion (311) and the arc-shaped surface of the counterweight (31) are concentrically arranged.
9. A planet carrier-adaptively fastened planetary gear reducer according to claim 1, wherein: a through hole is formed in the circle center of the two half discs (2), and the sliding groove (20) penetrates through the side wall of the through hole.
10. A planet carrier-adaptively fastened planetary gear reducer according to claim 9, wherein: the limiting structure for preventing the fastening device (3) from moving towards the inner side of the sliding groove (20) is arranged at the bottom of the sliding groove (20), the limiting structure comprises a limiting bolt (24) and a plurality of threaded holes (25), the threaded holes (25) are located on one side of the inner end face of the fastening device (3), the threaded holes (25) are perpendicular to the groove bottom face of the sliding groove (20), and the threaded holes (25) are arranged at equal intervals.
Technical Field
The invention relates to a planetary gear reducer, in particular to a planetary gear reducer with a self-adaptive and fastened planet carrier.
Background
Planetary gear reducers, also known as planetary reducers, servo reducers. In the reducer family, the planetary reducer is widely applied to transmission systems such as servo motors, stepping motors, direct current motors and the like due to the advantages of small size, high transmission efficiency, wide reduction range, high precision and the like. The function of the device is mainly used for reducing the rotating speed, increasing the torque and reducing the rotational inertia ratio of the load/the motor on the premise of ensuring the precision transmission. A large number of planetary gear reducers are used as matching parts in the industries of hoisting, digging, transportation, building and the like.
As shown in fig. 16, the planetary gear reducer includes a planetary carrier, the planetary carrier is composed of a first half disc 1 ' and a second half disc 2 ', a limiting frame 10 ' is disposed between the first half disc 1 ' and the second half disc 2 ', the limiting frame 10 ' and the first half disc 1 ' are integrally formed, and the limiting frame 10 ' and the second half disc 2 ' are finally fixed by a positioning pin 6 ' and a bolt 4 ' to ensure that the first half disc 1 ' and the second half disc 2 ' rotate synchronously.
The existing connection mode of the planet carrier is that a butt joint hole and a threaded hole are formed in a limiting frame 10 ' and a second half disc 2 ', a positioning pin 6 ' is inserted between the second half disc 2 ' and the limiting frame 10 ', a pressing plate 5 ' is covered at the outer end of the positioning pin 6 ', and finally the pressing plate 5 ' is firmly pressed on the surface of the second half disc 2 ' by screwing a bolt 4 ' so as to prevent the positioning pin 6 ' from being separated.
Therefore, the mechanical fixing mode has the following defects:
1. in the permanent use of speed reducer, because the vibration of speed reducer, constantly produce deformation between bolt 4 'and the place screw hole for bolt 4' is difficult to firmly fix, makes the clearance appear between spacing 10 'and the two half dishes 2', and the rotatory vibration and the noise of existence of planet carrier when the speed reducer moves.
2. Because the bolt 4 ' has the risk of breaking away from, consequently clamp plate 5 ' is difficult to continuous compress tightly at two half dish 2 ' surfaces, once produce the clearance between bolt 4 ' and the clamp plate 5 ', clamp plate 5 ' can produce the skew rotation around bolt 4 ', leads to locating pin 6 ' outer end to lose spacing to make spacing 10 ' lack the spacing and separate of locating pin 6 ' with two half dish 2 ', consequently have certain potential safety hazard.
3. When the rotation speed is higher, the vibration frequency of the planet carrier is higher, and if a gap exists between the two half discs, the generated noise is higher.
Disclosure of Invention
The invention aims to provide a planetary gear reducer with a self-adaptive fastening planet carrier, which utilizes a counterweight of a fastening device to apply centrifugal force to the counterweight when the planet carrier rotates at high speed, so that the centrifugal force pulls the fastening device, one end with a thicker fastening inclined plane is extruded to a fastening port, and thus, when the rotating speed of a plugboard and a pulling board is higher, higher extrusion force can be provided, two half discs of the planet carrier are extruded more tightly, the outer end and the inner end of the planet carrier both have enough clamping force, the inner end and the outer end of the planet carrier are stressed more uniformly, and the vibration of the planet carrier during rotation is reduced.
In order to realize the purpose of the invention, the invention adopts the following technical scheme: a planetary gear reducer with a self-adaptive fastening planetary carrier comprises a cylinder body and a planetary carrier, wherein the planetary carrier is positioned inside the cylinder body and comprises a half disc and a half disc, a limiting frame and a traction plate are fixed on the surface of the half disc, the limiting frame and the traction plate face the half disc, one end, facing the half disc, of the limiting frame is provided with an insertion plate, the middle parts of the insertion plate and the traction plate are provided with fastening ports, the half disc is provided with a sliding groove, the sliding groove is positioned on the surface, facing away from the half disc, of the half disc, the bottom of the sliding groove is provided with an insertion groove and a traction groove, the insertion groove and the traction groove penetrate through the half disc, the position of the insertion groove corresponds to that of the insertion plate, and the position of the traction groove corresponds to that of the traction; a fastening device is arranged in the sliding groove and comprises a shell, a weight piece and a fastening inclined plane, the fastening inclined plane faces towards the surface of one side of the fastening port back to the two half discs, the fastening inclined plane is positioned on the surface of the shell, and the thickness of the inner end of the fastening inclined plane is larger than that of the outer end of the fastening inclined plane; the surface of the fastening port, which is in contact with the fastening inclined surface, is a pressing surface, and the pressing surfaces at the fastening ports of the insertion plate and the traction plate are in the same plane; the fastening device penetrates through the fastening openings of the insertion plate and the traction plate, the extrusion surface contacts with the fastening inclined surface of the fastening device, and the bottom of the sliding groove contacts with the lower part of the fastening device; the plugboard is inserted into the plugboard groove, the traction plate is inserted into the traction groove, and the fastening device penetrates through the fastening ports of the plugboard and the traction plate and is pressed in the sliding groove.
Preferably, three sets of planet gears are arranged on the planet carrier, and the sliding groove and the fastening device are positioned between the two adjacent sets of planet gears.
Preferably, the surfaces of the two half plates are also provided with counterweight grooves, fastening devices are arranged in the counterweight grooves, the structures of the fastening devices in the counterweight grooves are the same as those of the fastening devices in the sliding grooves, and the surfaces of the counterweight grooves are provided with fixing plates which are compressed and fix the fastening devices in the counterweight grooves.
Preferably, the traction plate, the limiting frame and the insertion plate are integrally formed in the same half disc.
Preferably, the fastening device further comprises a telescopic rod, a fastening spring and a limiting part, the telescopic rod, the fastening spring and the limiting part are all located inside the shell, two ends of the telescopic rod are respectively connected with the counterweight part and the limiting part, and the surface of the telescopic rod is sleeved with the fastening spring.
Preferably, the weight member is a roller, and the middle part of the weight member is pivoted to the end part of the telescopic rod.
Preferably, the weight is cylindric, and weight arc surface is equipped with rubber arch and metal arch, rubber arch and the protruding annular array in turn of metal set up in the weight surface, the protruding height of rubber is greater than the protruding height of metal.
Preferably, the outer end surface of the metal protrusion is arc-shaped, and the outer end surface of the metal protrusion and the arc-shaped surface of the counterweight are concentrically arranged.
Preferably, a through hole is formed in the circle center of the two half discs, and the sliding groove penetrates through the side wall of the through hole.
Preferably, the limiting structure for preventing the fastening device from moving towards the inner side of the sliding groove is arranged at the bottom of the sliding groove and comprises a limiting bolt and a plurality of threaded holes, the threaded holes are located on one side of the inner end face of the fastening device, and the threaded holes are perpendicular to the bottom surface of the sliding groove and are arranged at equal intervals.
Compared with the prior art, the planet carrier of the planetary gear speed reducer adopting the technical scheme has the following beneficial effects:
firstly, by adopting the planet carrier, the rotation of the planet carrier can generate centrifugal force towards the outer peripheral side on the weight part of the fastening device, so that the fastening device is pulled and displaced towards the outer peripheral side; the fastening inclined plane through the fastening device exerts pulling force to socket plate and tractive board to make two half dishes firmly compress tightly on spacing, when the planet carrier is along with the high-speed rotation of speed reducer, the rotational speed is higher more, and half dish and two half dishes are pressed and are tightened more. Because the threaded fasteners such as bolts and the like are eliminated, even if the speed reducer is influenced by vibration, looseness and deviation between the fastening opening and the fastening inclined plane can not be caused, and the generation of vibration and noise during the rotation of the planet carrier is effectively avoided.
And the extrusion surfaces on the traction plate and the insertion plate are positioned in the same plane, so that the clamping force generated by the fastening inclined plane of the fastening device at the fastening opening is ensured to be the same inside and outside.
And the insertion plate generates clamping force on the edge of the planet carrier, and the traction plate maintains the clamping force in the middle of the planet carrier, so that the situation that the outer side part of the planet gear is stressed more than the part close to the circle center is avoided, and the problem of planet gear vibration caused by uneven stress is prevented.
Fourthly, in the rotating process, along with the increase of the rotating speed, the linear speed of the fastening device is continuously increased, the centrifugal force of the weight part is increased and tends to move towards the edge of the planet carrier, so that the fastening inclined plane moves outwards, the thickness of the fastening inclined plane abutted with the fastening port is continuously increased, the first half disc and the second half disc are pressed more tightly at a high rotating speed, namely, the rotating speed is pressed more tightly, and the vibration and the noise during high-speed rotation are effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a planetary gear reducer with a self-adaptive fastening planet carrier according to the invention.
Fig. 2 is a schematic structural diagram of a planet carrier in the embodiment.
Fig. 3 is a schematic structural diagram (at high-speed rotation) of the planetary carrier in the embodiment.
FIG. 4 is a schematic structural diagram of a planet carrier in an embodiment.
Fig. 5 is a schematic view showing the connection of the first half disk and the second half disk in the embodiment.
Fig. 6 is a schematic view showing the connection of the first half disk and the second half disk in the embodiment.
Fig. 7 is a schematic view showing the connection of the fastening port and the fastening device in the embodiment.
Fig. 8 is a sectional view of a fastening port and a fastening device in the embodiment.
Fig. 9 is a schematic structural view of a fastening device in an embodiment.
Fig. 10 is a disassembled schematic view of the fastening device in the embodiment.
Fig. 11 is a sectional view of the fastening device in the embodiment.
Fig. 12 is a sectional view (stretched state) of the fastening device in the embodiment.
Fig. 13 is a schematic structural view of the weight member in the embodiment.
Fig. 14 is a schematic structural view of the weight member in the embodiment.
Fig. 15 is a partial enlarged view at B in fig. 14.
Fig. 16 is a schematic structural view of a planetary gear reducer in the prior art.
Fig. 17 is a schematic structural view of a planetary gear reducer in the prior art.
Fig. 18 is a schematic structural view of a planetary gear reducer in the prior art.
Reference numerals: 1. a half disc; 10. a limiting frame; 11. a plugboard; 12. a fastening opening; 13. a counterweight groove; 14. a fixing plate; 2. two half discs; 20. a sliding groove; 21. inserting grooves; 22. a threaded hole; 23. a limit bolt; 3. a fastening device; 30. fastening the inclined plane; 31. a counterweight; 32. a telescopic rod; 33. a limiting member; 34. a fastening spring; 35. a housing.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The carrier of the planetary gear reducer shown in fig. 1 to 12 includes a half disc 1 and a
As shown in fig. 5, a limiting
The two
Referring to fig. 5 and 6, when the
As shown in fig. 6, the
When the planet carrier rotates at a high speed, the planet carrier generates centrifugal force to the fastening device 3 (the
In the present embodiment, the planet carrier is provided with three sets of planet gears, three sets of sliding
As shown in fig. 9, the
When the planet carrier rotates at a higher rotation speed, the centrifugal force received by the
When the planet carrier rotates at a low speed, the
The
The
As shown in fig. 13, the
As shown in fig. 15, the
The rubber bumps 312 are higher than the metal bumps 311. When the
Secondly, when the
That is, only when rotating at a high speed, the
The rubber bumps 312 and the metal bumps 311 are arranged alternately, and the metal bumps 311 are used for buffering through the rubber bumps 312 after impacting the inner wall, so that the over-high vibration frequency is avoided, and the
As shown in fig. 15, the outer end surface of the
If the operator does not find the situation, the
As shown in fig. 6, a through hole is formed in the center of the circle of the two
As shown in fig. 6 and 8, the bottom of the sliding
Therefore, when the planet carrier is used for a long time and abrasion is formed between the fastening inclined surface 30 and the
Therefore, even if the gap is formed after abrasion, the
As shown in fig. 4, the surface of the two
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
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