CN218031326U

CN218031326U - Gear box structure of speed reducer

Info

Publication number: CN218031326U
Application number: CN202220830452.2U
Authority: CN
Inventors: 周永强; 谭宝国
Original assignee: Ningbo Senfuli Motor Co ltd
Current assignee: Ningbo Senfuli Motor Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-12-13
Anticipated expiration: 2032-04-11

Abstract

The utility model provides a speed reducer gear box structure, include: a housing; a planetary gear part having at least one set of planetary gear set and disposed inside the housing; and the at least one annular gear can be meshed with the planet gears in the planetary gear set, and the limiting pieces are arranged along the radial direction to prevent the planet gears or the sun gear from axially shifting. The locating part that sets up through the ring gear is parallel with the planet carrier, can with the planet carrier cooperation, prescribes a limit to the length space of holding planet wheel and sun gear, can prevent that planet wheel or sun gear from rotating the in-process and drunkenness because of the axial force effect, and the ring gear lateral wall has the restraint to the radial power of planet wheel, sun gear operation in-process simultaneously, consequently the utility model discloses a gear box plays better supporting role to the whole operation from radial and axial, reduces the drunkenness, reduces friction loss and noise.

Description

Gear box structure of speed reducer

Technical Field

The utility model relates to a speed reducer part structure, concretely relates to speed reducer gear box structure.

Background

The speed reducer plays a role in matching rotating speed and transmitting torque between the prime motor and the working machine or the actuating mechanism, and the purposes of reducing the rotating speed and increasing the torque are achieved through the speed reducer. The planetary gear reducer has the advantages of small volume, high transmission efficiency, wide reduction range, high precision and the like, is widely applied to transmission systems of servo motors, stepping motors, direct current motors and the like, and can reduce the rotating speed, increase the torque and reduce the rotational inertia ratio of a load/a motor on the premise of ensuring precise transmission. The gear in the planetary gear speed reducer can be generally divided into straight teeth and helical teeth, wherein the helical teeth are higher in bearing capacity and better in precision relative to the straight teeth, but the helical gears are arranged to easily cause large axial thrust, and the gear moves along the axial direction to impact a bearing to a certain extent and generate noise.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a thereby can improve the gear box structure of planetary reducer helical gear group drunkenness reduction friction loss and noise.

The utility model provides a speed reducer gear box structure, include:

a housing;

a planetary gear part having at least one set of planetary gear sets and disposed inside the housing;

the inner gear ring can be meshed with the planet gears in the planetary gear set, and a limiting piece is arranged along the radial direction to prevent the planet gears or the sun gear from moving along the axial direction;

the power input end is connected with the prime power part, and the power output end is connected with the working part.

After adopting above-mentioned structure, the locating part that the ring gear set up is parallel with the planet carrier, can cooperate with the planet carrier, prescribes a limit to the length space of holding planet wheel and sun gear, can prevent that planet wheel or sun gear from rotating the in-process and drunkenness because of the axial force effect, and the ring gear lateral wall has the restraint to the radial force of planet wheel, sun gear operation in-process simultaneously, consequently the utility model discloses a gear box plays better supporting role to the whole operation from radial and axial, reduces the drunkenness, reduces friction loss and noise.

Furthermore, the speed reducer is provided with more than two groups of planetary gear sets which are coaxially arranged, the planet gears and the sun gear in the first group of planetary gear sets closest to the power input end of the speed reducer are all helical gears, and the first planetary gear set is provided with an inner gear ring meshed with the first planetary gear set.

Furthermore, the power input end of the speed reducer is connected with the prime power part through a flange.

Furthermore, the inner gear ring is provided with a bulge, and the flange is correspondingly provided with a matching positioning hole.

Furthermore, the protrusion is a hollow cylinder, and the positioning hole is a matching cylinder.

Preferably, the root of the bulge is provided with a positioning point, and the flange is correspondingly provided with a matched groove.

Furthermore, the limiting part is a closed plane or a hollow plane.

Further, the diameter of the output shaft of the motive power part is the same as the diameter of the protrusion of the inner gear ring.

Furthermore, a positioning piece for determining concentricity is arranged at the power output end of the speed reducer.

Furthermore, the positioning piece comprises a first positioning block and a second positioning block, and the longitudinal sections of the first positioning block and the second positioning block are mutually vertical; the planet gear part is provided with a positioning groove matched with the first positioning block, the power output end is provided with a first connecting piece, and the first connecting piece is provided with a positioning groove matched with the second positioning block.

Furthermore, the first positioning block and the second positioning block can be directly connected or connected through a connecting platform.

Furthermore, the two ends of the shell are provided with connecting buckles, the flange is provided with a first connecting clamping groove matched with the connecting buckle at one end, and the output end cover of the speed reducer is provided with a second connecting clamping groove matched with the connecting buckle at the other end.

Furthermore, the two ends of the shell are provided with limiting blocks, the flange is provided with a first limiting clamping groove matched with the limiting block at one end, and the output end cover of the speed reducer is provided with a second limiting clamping groove matched with the limiting block at the other end.

Further, the flange is fixedly connected with the motive power portion through fasteners, and the fasteners comprise screws, bolts and the like.

Drawings

Fig. 1 is a schematic view of an assembly structure of the speed reducer and the prime mover of the present invention.

Fig. 2 is the utility model discloses speed reducer gear box assembly structure schematic diagram.

Fig. 3 is a schematic structural diagram of the housing in fig. 2.

Fig. 4a to 4c are schematic structural diagrams of the ring gear in fig. 2.

Fig. 5 is a schematic structural view of the positioning member in fig. 2.

Fig. 6 is a schematic structural diagram of the first connecting member in fig. 2.

Fig. 7 is a schematic structural view of the flange of fig. 1.

FIG. 8 is a schematic structural diagram of the power unit in FIG. 1 being a motor

Fig. 9 is a schematic structural diagram of the output end cap in fig. 1.

Fig. 10 is a schematic view of the internal structure of the speed reducer of the present invention after being connected to the prime mover.

In the figure, 1-a motive power part, 2-a flange, 3-a speed reducer, 4-an output end cover, 5-a fastener, 11-a motive power output shaft, 21-a positioning hole, 22-a first connecting clamping groove, 23-a first limiting clamping groove, 24-a groove, 31-a housing, 32-an inner gear ring, 33-a planetary gear set, 34-a positioning piece, 35-a third connecting piece, 36-a first connecting piece, 311-a connecting buckle, 312-a limiting piece, 321-a bulge, 322-a limiting piece, 323-an inclined tooth, 324-a positioning point, 331-a first set of planetary gear set, 332-a second set of planetary gear set, 333-a third set of planetary gear set, 334-a second connecting piece, 341-a first positioning block, 342-a second positioning block, 343-a connecting platform and 361-a positioning groove.

Detailed Description

The present invention will be further described with reference to the following detailed description.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, its one end of speed reducer 3 be power input end and can be used to connect driving power portion 1, for example motor, internal-combustion engine etc. the other end is power output end and can be used to connect work portion, including working machine or actuating mechanism.

The utility model provides a speed reducer gear box structure specifically includes:

a housing 31;

a planetary gear portion 33 having at least one set of planetary gear sets and disposed inside the housing 31;

at least one annular gear 32, which can mesh with the planet gears in the planetary gear set and is provided with a limiting piece 322 along the radial direction to prevent the planet gears or the sun gear from moving along the axial direction;

the power input end is connected with the prime power part 1, and the power output end is connected with the working part. The prime power part 1 inputs power to the speed reducer 3 to drive the planetary gear part to rotate, and the rotating speed is reduced to a proper speed through gear ratio adjustment, and then the power is transmitted to the working machine or the actuating mechanism through the power output end.

After adopting above-mentioned structure, set up at least a set of planetary gear set in the shell, and have at least one ring gear with the planet wheel meshing have the locating part, this locating part is along radial setting, parallel with the planet carrier, locating part and planet carrier cooperation, length space to holding planet wheel and sun gear is injectd, can prevent that planet wheel or sun gear from rotating the in-process and drunkenness because of the axial force effect, the ring gear lateral wall is to the planet wheel simultaneously, the radial force of sun gear operation in-process has the restraint, consequently the utility model discloses a set up the locating part at the ring gear and reach the planet wheel, radial and the axial restraint of sun gear to play better supporting role to whole operation, reduce the drunkenness, reduce frictional loss and noise.

In one embodiment of the present invention, as shown in fig. 2, in order to obtain higher bearing capacity and precision, the planet wheel and the sun wheel in the first set of planetary gear set 331 closest to the power input end of the speed reducer 3 are helical gears, and the internal teeth of the ring gear 32 engaged therewith are also helical teeth 323, as shown in fig. 4 a.

In one embodiment of the present invention, as shown in fig. 2, in order to obtain the desired transmission ratio, the speed reducer 3 is provided with three planetary gear sets, which are a first planetary gear set 331, a second planetary gear set 332 and a third planetary gear set 333 along the power output direction of the speed reducer 3, and in order to satisfy the requirements of load, accuracy and manufacturing cost, the planetary gears and the sun gear of the first planetary gear set 331 are bevel gears.

The utility model discloses a one of them embodiment, as shown in FIG. 1, 3 power input ends of speed reducer pass through flange 2 with motive power portion 1 to be connected, increase structural strength, improve motive power portion 1 and speed reducer 3's power transmission stationarity.

The utility model discloses a one of them embodiment, as shown in FIG. 2, ring gear 32 is provided with a arch 321, and flange 2 correspondence is provided with a cooperation locating hole 21, fixes a position fast when being convenient for assemble.

As a modification of the above embodiment, as shown in fig. 4b, the protrusion 321 is a hollow cylinder, and the corresponding positioning hole 21 is also a matching cylinder.

As a modification of the above embodiment, as shown in fig. 4b and 7, the root of the protrusion 321 is provided with an anchor point 324, and the flange is correspondingly provided with a matching groove 24. The positioning point 324 is matched with the groove 24, so that the assembly can be well assisted to be quickly positioned, and the concentricity of the speed reducer 3 and the motive power part 1 is ensured.

As an improvement of the above embodiment, as shown in fig. 4b and 4c, the position-limiting element 322 is a closed plane or a hollow plane.

The utility model discloses a one of them embodiment, as shown in fig. 10, the diameter of the former motive power output shaft 11 of former motive power portion 1 is the same with the protruding 321 diameter of ring gear 32, is favorable to guaranteeing that former motive power portion 1 has good axiality and concentricity with the speed reducer to reduce transmission wear, reduce friction, increase of service life.

The utility model discloses a one of them embodiment, speed reducer 3's power take off end is provided with the setting element 34 that is used for confirming the concentricity, and through this setting element 34, can conveniently assemble when speed reducer 3 is connected with the work portion, and the concentricity is good, and power transmission is smooth and easy, vibrates fewly, long service life.

As a modification of the above embodiment, as shown in fig. 5, the positioning member 34 includes a first positioning block 341 and a second positioning block 342, and longitudinal sections of the first positioning block 341 and the second positioning block 342 are perpendicular to each other; the planetary gear portion 33 is provided with a positioning groove engaged with the first positioning block 341, the power output end is provided with a first connecting member 36, and the first connecting member 36 is provided with a positioning groove 361 engaged with the second positioning block 342, as shown in fig. 6.

As a modification of the above embodiment, the first positioning block 341 and the second positioning block 342 may be directly connected or connected through a connecting platform 343, as shown in fig. 5.

The positioning element 34 is directly connected to the first connecting element 36 and the second connecting element 334 respectively, which are disposed at the power output end of the speed reducer 3, the first connecting element 36 is partially sleeved in the third connecting element 35, and the first connecting element 36 and the third connecting element 35 are sleeved in a cavity formed by the housing 31 and the output end cover 4 of the speed reducer 3.

As a further modified example, as shown in fig. 3, 7 and 9, the two ends of the housing 31 are provided with connecting buckles 311, the flange 2 is provided with a first connecting clamping groove 22 matched with the connecting buckle 311 at one end, and the output end cover 4 of the speed reducer 3 is provided with a second connecting clamping groove 41 matched with the connecting buckle 311 at the other end. The connection strength between the speed reducer 3 and the motive power part 1 is enhanced by connecting the buckle and the clamping groove, so that the stable power output is ensured, and the friction is reduced.

As a further improved embodiment, the speed reducer 3 is provided with more than two sets of coaxial planetary gear sets, wherein the first planetary gear set 331 closest to the power input end of the speed reducer 3 is a helical gear set, and the remaining planetary gear sets are straight-tooth gear sets, and the axial thrust of the helical gear set is greater than that of the straight-tooth gear set. According to practical circumstances, multiple sets of planetary gear sets, even all planetary gear sets, can be selected as helical gear sets, and when more than one set of helical gear sets is provided, the inner gear rings which are meshed and provided with limiting pieces can be arranged for each set of helical gear sets.

As a further improved embodiment, as shown in fig. 3, 7 and 9, two ends of the housing 31 are provided with a limiting block 312, the flange 2 is provided with a first limiting slot 23 matched with the limiting block 312 at one end, and the output end cover 4 of the speed reducer 3 is provided with a second limiting slot 42 matched with the limiting block 312 at the other end.

As a further modified example, as shown in fig. 10, the flange 2 is fixedly connected with the motive power portion 1 by fasteners 5, which include screws, bolts, and the like.

The embodiment of the utility model provides a material, reagent and experimental facilities that involve, if do not have the special explanation, be the commercial product that accords with electromechanical transmission structure field.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, improvements and decorations can be made without departing from the core technology of the present invention, and these improvements and decorations should also belong to the protection scope of the present invention. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. Speed reducer gear box structure, its characterized in that includes:

a housing;

2. The reduction box gear box structure according to claim 1, wherein more than two sets of the planetary gear sets are coaxially arranged, the planet gear and the sun gear of the first set of the planetary gear sets closest to the power input end are helical gears, and the first set of the planetary gear sets is provided with an inner gear ring meshed with the first set of the planetary gear sets.

3. The reduction box gearbox structure as claimed in claim 2, wherein the power input end is connected with the motive power part through a flange, the inner gear ring is provided with a protrusion, and the flange is correspondingly provided with a matching positioning hole.

4. The reducer gearbox structure as recited in claim 3, wherein said protrusion is a hollow cylinder, and said positioning hole is a matching cylinder; the root of the bulge is provided with a positioning point, and the flange is correspondingly provided with a matched groove; the flange is fixedly connected with the motive power part through a fastener.

5. The reducer gearbox structure as claimed in claim 1, wherein the limiting member is a closed plane or a hollowed plane.

6. The reducer gearbox structure of claim 3, wherein a motive force output shaft of the motive force portion has a diameter that is the same as a diameter of the protrusion.

7. The reducer gearbox structure according to claim 1, wherein the power output end is provided with a positioning member for determining concentricity, the positioning member comprises a first positioning block and a second positioning block, and longitudinal sections of the first positioning block and the second positioning block are perpendicular to each other; the planet gear part is provided with a positioning groove matched with the first positioning block, the power output end is provided with a first connecting piece, and the first connecting piece is provided with a positioning groove matched with the second positioning block.

8. The reducer gearbox structure according to claim 7, wherein the first positioning block and the second positioning block can be directly connected or can be connected through a connecting platform.

9. The reducer gearbox structure according to claim 3, wherein the two ends of the housing are provided with connecting buckles, the flange is provided with a first connecting clamping groove which is matched with the connecting buckle at one end, and the output end cover of the reducer is provided with a second connecting clamping groove which is matched with the connecting buckle at the other end.

10. The reducer gearbox structure as claimed in claim 3, wherein the two ends of the housing are provided with limit blocks, the flange is provided with a first limit clamping groove matched with the limit block at one end, and the output end cover of the reducer is provided with a second limit clamping groove matched with the limit block at the other end.