CN217301462U - Ultrashort rotary speed reducer - Google Patents
Ultrashort rotary speed reducer Download PDFInfo
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- CN217301462U CN217301462U CN202220854770.2U CN202220854770U CN217301462U CN 217301462 U CN217301462 U CN 217301462U CN 202220854770 U CN202220854770 U CN 202220854770U CN 217301462 U CN217301462 U CN 217301462U
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Abstract
The utility model provides an ultrashort rotary speed reducer, the planet carrier and the input flange are coaxial and fixedly connected, one side of the planet carrier, which is back to the input flange, is provided with a plurality of bulges arranged along the circumferential direction in a protruding way, and the bulges are respectively provided with planet wheels in a rotating way; an input gear shaft is rotatably connected with a central hole of the input flange, and an output end of the input gear shaft penetrates out of the central hole of the planet carrier to be meshed with the planet gear; the ring gear cover is located input flange is peripheral, ring gear one end with input flange rotates the connection, and other end internal periphery is equipped with the internal tooth, with the planet wheel meshes mutually, the ring gear outer peripheral edge is equipped with the external tooth for mesh mutually with the gyration gear wheel. The utility model provides a technical scheme's beneficial effect is: the bearing capacity is strong, the axial dimension is greatly shortened, the structure is simple, the reliability is high, the precision is high, the disassembly and the assembly are convenient, the production and the processing are easy, and the production cost is low.
Description
Technical Field
The utility model relates to a planetary reducer technical field especially relates to an ultrashort rotary reducer.
Background
The output shaft of the rotary speed reducer is meshed with the large gear by the small externally hung gear to complete the rotation and pitching actions, and the rotary speed reducer is widely applied to industries such as buildings, lifting, ships, radars and the like due to high strength and strong stability. In a conventional rotary speed reducer, a motor generally transmits torque to an output shaft through a planetary gear train, the output shaft is connected with an externally-hung pinion, and then is engaged with a bull gear to complete a rotary motion. However, due to the structural limitation, the motor needs to transmit torque to the output shaft of the speed reducer, a pair of tapered roller bearings is arranged on the output shaft to bear large torque and radial force, and a complete planetary mechanism is needed between the motor and the output externally-hung pinion, so that the whole axial size is too long, the structure is relatively complex, a plurality of parts are needed, the installation is inconvenient, the processing difficulty is large, the maintenance is inconvenient, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
In view of this, to solve the above problems, an embodiment of the present invention provides an ultra-short slewing reducer.
An embodiment of the utility model provides an ultrashort slewing reducer, include:
an input flange;
the planet carrier is coaxial and fixedly connected with the input flange, a plurality of bulges arranged at intervals along the circumferential direction are outwards and convexly arranged on one side of the planet carrier, which is back to the input flange, and planet wheels are respectively and rotatably arranged on the bulges;
the input gear shaft is rotatably connected with the central hole of the input flange, and the output end of the input gear shaft penetrates out of the central hole of the planet carrier to be meshed with the planet gear;
the ring gear, the cover is located input flange is peripheral, ring gear one end with input flange rotates to be connected, and other end internal periphery is equipped with the internal tooth, with the planet wheel meshes mutually, ring gear outer peripheral edge is equipped with the external tooth for mesh mutually with the gyration gear wheel.
Furthermore, the planet carrier towards one side of input flange is inwards sunken to form a groove, the input flange end is located in the groove, the inner side wall of the groove is provided with an internal spline, and the outer periphery of the input flange is provided with an external spline matched with the internal spline.
The input flange is provided with a plurality of knife withdrawing grooves coaxial with the input flange, and the plurality of baffle plates are positioned on the periphery of the input flange, inserted into the knife withdrawing grooves and fixedly connected with the planet carrier.
Further, the baffle is equipped with two and all is the semicircular setting.
Further, the input gear shaft comprises an input shaft and a sun gear, and the input shaft and the sun gear are integrally formed; and/or the presence of a gas in the gas,
the planet carrier and the bulge are integrally formed.
Further, the gear ring is connected with the input flange through a tapered roller bearing; and/or the presence of a gas in the gas,
the gear ring is fixedly connected with the input flange through the gear ring.
Further, a first framework oil seal is connected between one end, far away from the planet carrier, of the input flange and the input gear shaft; and/or the presence of a gas in the gas,
and a second framework oil seal is connected between the end part of the gear ring and the input flange.
The input gear shaft is connected with the central hole of the input flange through a pair of deep groove ball bearings, and the limiting assembly is used for limiting the axial movement of the deep groove ball bearings on the input gear shaft.
Further, the input flange is kept away from the one end inside wall of planet carrier is the convex step form setting in middle part and forms the mounting groove, deep groove ball bearing is located in the mounting groove, the input flange inside wall is equipped with the retaining ring for the hole, input gear axle lateral wall is equipped with the retaining ring for the shaft, spacing subassembly includes retaining ring for the hole, the retaining ring for the shaft and mounting groove lateral wall, one of them deep groove ball bearing carries on spacingly.
Further, the input flange is close to the one end inside wall of planet carrier is the convex step form setting in middle part and forms the mounting groove, deep groove ball bearing is located in the mounting groove, the output of input gear shaft is the sunken step form setting in middle part and forms the portion of resist, spacing subassembly includes the portion of resist with the mounting groove lateral wall is to another deep groove ball bearing carries on spacingly.
The embodiment of the utility model provides a technical scheme brings the beneficial effect be: the input end and the output end of the input gear shaft are taken as a shaft and a gear, so that the space of the speed reducer is greatly saved; the plurality of bulges on the planet carrier are used as planet pin shafts, so that the planet pin shafts and the planet carrier are of an integrated structure, the high strength is ensured, and the axial size of the speed reducer can be further saved; the gear ring is directly meshed with the rotary large gear, can bear large torque and large radial force, and greatly saves axial space while meeting the overall strength. The utility model provides an ultrashort rotary speed reducer bearing capacity is strong, and axial dimension shortens substantially, simple structure, and the reliability is high, and the precision is high, the dismouting of being convenient for, and the production and processing is easy and low in production cost.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an ultra-short slewing reducer provided by the present invention.
In the figure: 1-an input gear shaft, 2-a first framework oil seal, 3-a first shaft retainer ring, a 4-hole retainer ring, 5-an input flange, 6-a second framework oil seal, 7-a tapered roller bearing, 8-a gear ring, 9-a locking nut, 10-a baffle, 11-a planet carrier, 12-a planet wheel, 13-a first inner hexagonal socket head screw, 14-a cylindrical roller bearing, 15-a second shaft retainer ring, 16-a bulge, 17-a deep groove ball bearing, 18-a gland, 19-an internal thread cylindrical pin, 20-a second inner hexagonal socket head screw, 21-a groove, 22-a tool withdrawal groove and 23-a resisting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides an ultra-short rotary speed reducer, which includes an input flange 5, a planet carrier 11, an input gear shaft 1, and a gear ring 8.
The planet carrier 11 is coaxially and fixedly connected with the input flange 5, a plurality of protrusions 16 arranged at intervals along the circumferential direction are outwards and convexly arranged on one side of the planet carrier 11, which is back to the input flange 5, and planet wheels 12 are respectively rotatably arranged on the protrusions 16; the input gear shaft 1 is rotatably connected with a central hole of the input flange 5, and the output end of the input gear shaft 1 penetrates out of the central hole of the planet carrier 11 to be meshed with the planet gear 12; 8 covers of ring gear are located input flange 5 is peripheral, 8 one end of ring gear with input flange 5 rotates to be connected, and the other end internal periphery is equipped with the internal tooth, with planet wheel 12 meshes mutually, 8 outer peripheries of ring gear are equipped with the external tooth for mesh mutually with the gyration gear wheel.
The input flange 5 and the planet carrier 11 are fixed, the motor drives the input shaft of the input gear shaft 1 to rotate, the output shaft of the input gear shaft 1 is meshed with the planet wheel 12 to drive the planet wheel 12 to rotate on the protrusion 16, and the planet wheel 12 is meshed with the gear ring 8 to drive the gear ring 8 to rotate to complete output. Input gear shaft 1 includes input shaft and sun gear, the input shaft with the sun gear is integrated into one piece and sets up, and the input shaft is the input, and the sun gear is the output, planet carrier 11 with protruding 16 is integrated into one piece and sets up, can guarantee input gear shaft 1 and planet carrier 11's intensity.
In the utility model, the input end and the output end of the input gear shaft 1 are integrated into a whole, thus greatly saving the space of the speed reducer; the plurality of protrusions 16 on the planet carrier 11 are used as planet pin shafts, so that the planet pin shafts and the planet carrier 11 are of an integrated structure, the high strength is ensured, and the axial size of the speed reducer can be further saved; the gear ring 8 is directly meshed with the rotary large gear, can bear large torque and large radial force, and greatly saves axial space while meeting the overall strength. The utility model provides an ultrashort rotary speed reducer bearing capacity is strong, and axial dimension shortens substantially, simple structure, and the reliability is high, and the precision is high, the dismouting of being convenient for, and the production and processing is easy and low in production cost.
In this embodiment, the planet carrier 11 is provided with 4 protrusions 16, and each protrusion 16 is connected with the planet wheel 12 through the cylindrical roller bearing 14, so as to ensure the stability of the rotation of the planet wheel 12. A second shaft retainer ring 15 is mounted at one end of the protrusion 16, which is opposite to the planet carrier 11, and the planet carrier 11 and the second shaft retainer ring 15 respectively limit the cylindrical roller bearing 14.
In order to facilitate the connection of the planet carrier 11 and the input flange 5, the planet carrier 11 faces one side of the input flange 5 is inwards recessed to form a groove 21, the end part of the input flange 5 is positioned in the groove 21, an inner side wall of the groove 21 is provided with an inner spline, the outer periphery of the input flange 5 is provided with an outer spline matched with the inner spline, and the input flange 5 and the planet carrier 11 are ensured to be relatively fixed in the circumferential direction of the input gear shaft 1.
The outer periphery of the input flange 5 is provided with a tool withdrawal groove 22 coaxial with the input flange, and a plurality of baffle plates 10 are positioned on the periphery of the input flange 5, inserted into the tool withdrawal groove 22 and fixedly connected with the planet carrier 11, so that the input flange 5 and the planet carrier 11 are relatively fixed in the axial direction of the input gear shaft 1. In this embodiment, baffle 10 is equipped with two and all is the semi-annular setting, and two baffles 10 are connected and are carried out the cladding for the annular to input flange 5 fixedly, guarantee two baffles 10's stability. Specifically, the planet carrier 11 and the baffle plate 10 are locked and connected through a second inner hexagonal socket head cap screw 20, the planet carrier 11 and the split baffle plate 10 are axially limited through screw locking, the axial size is small, and the reliability is high.
The gear ring 8 is connected with the input flange 5 through a tapered roller bearing 7 and is axially pre-tightened through a locking nut 9, an internal thread cylindrical pin 19 is matched for looseness prevention after the internal thread and the external thread are matched, and the stability of connection of the gear ring 8 and the input flange 5 is guaranteed. The gland 18 and one end of the gear ring 8 far away from the input flange 5 are fixedly connected, and the gear ring 8 and the gland 18 are in locking connection through a first inner hexagonal socket head cap screw 13.
One end of the input flange 5, which is far away from the planet carrier 11, is connected with a first framework oil seal 2 between the input gear shaft 1, and the end part of the gear ring 8 is connected with a second framework oil seal 6 between the input flange 5, so that grease can not be leaked from the position.
The input gear shaft 1 is connected with the central hole of the input flange 5 through a pair of deep groove ball bearings 17, the operation is stable, the noise is low, and the limiting assembly is used for limiting the axial movement of the deep groove ball bearings 17 on the input gear shaft 1.
The input flange 5 is close to the one end inside wall of planet carrier 11 is the convex step form setting in middle part and forms the mounting groove, deep groove ball bearing 17 is located in the mounting groove, the output of input gear shaft 1 is the sunken step form setting in middle part and forms retaining part 23, spacing subassembly includes retaining part 23 with the mounting groove lateral wall is one of them deep groove ball bearing 17 carries on spacingly. Through being provided with spacing subassembly, avoid two deep groove ball bearing 17 at input gear shaft 1 axial displacement to guarantee the stability of connecting between input gear shaft 1 and the input flange 5. In other embodiments, the same stop assembly may be used for both deep groove ball bearings 17.
In this document, the terms front, back, upper, lower and the like in the drawings are used for the sake of clarity and convenience only for the components are located in the drawings and the positions of the components relative to each other. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An ultrashort slewing reducer, comprising:
an input flange;
the planet carrier is coaxial and fixedly connected with the input flange, a plurality of bulges arranged at intervals along the circumferential direction are outwards and convexly arranged on one side of the planet carrier, which is back to the input flange, and planet wheels are respectively rotatably arranged on the bulges;
the input gear shaft is rotatably connected with the central hole of the input flange, and the output end of the input gear shaft penetrates out of the central hole of the planet carrier to be meshed with the planet gear;
the ring gear, the cover is located input flange is peripheral, ring gear one end with input flange rotates to be connected, and other end internal periphery is equipped with the internal tooth, with the planet wheel meshes mutually, ring gear outer peripheral edge is equipped with the external tooth for mesh mutually with the gyration gear wheel.
2. The ultra-short slewing reducer as claimed in claim 1, wherein a side of said planet carrier facing said input flange is recessed inwardly to form a groove, an end portion of said input flange is located in said groove, an inner side wall of said groove is provided with an inner spline, and an outer periphery of said input flange is provided with an outer spline adapted to said inner spline.
3. The ultra-short rotary speed reducer as recited in claim 2, further comprising a plurality of baffle plates, wherein the outer periphery of the input flange is provided with a tool withdrawal groove coaxial therewith, and the plurality of baffle plates are located at the outer periphery of the input flange, inserted into the tool withdrawal groove and fixedly connected with the planet carrier.
4. The ultra-short slew reducer of claim 3 wherein there are two of the baffles and each baffle is disposed in a semi-circular configuration.
5. The ultra-short slew reducer of claim 1 wherein the input gear shaft comprises an input shaft and a sun gear, the input shaft and the sun gear being integrally disposed; and/or the presence of a gas in the gas,
the planet carrier and the bulge are integrally formed.
6. The ultra short slew reducer of claim 1 where the ring gear is connected to the input flange by a tapered roller bearing; and/or the presence of a gas in the gas,
the gear ring is fixedly connected with the input flange through the gear ring.
7. The ultra-short slew reducer of claim 1 wherein a first frame oil seal is connected between the input gear shaft and an end of the input flange remote from the planet carrier; and/or the presence of a gas in the gas,
and a second framework oil seal is connected between the end part of the gear ring and the input flange.
8. The ultra-short slew reducer of claim 1 further comprising a limit assembly, the input gear shaft being connected to the input flange central bore via a pair of deep groove ball bearings, the limit assembly being configured to limit axial movement of the deep groove ball bearings at the input gear shaft.
9. The ultra-short rotary speed reducer as recited in claim 8, wherein the inner sidewall of the input flange at the end away from the planet carrier is provided with a mounting groove having a step shape with a convex middle portion, the deep groove ball bearing is located in the mounting groove, the inner sidewall of the input flange is provided with a hole retainer, the outer sidewall of the input gear shaft is provided with a shaft retainer, and the limiting component comprises the hole retainer, the shaft retainer and the mounting groove sidewall and limits one of the deep groove ball bearing.
10. The ultra-short rotary speed reducer of claim 9, wherein the inner sidewall of the input flange near one end of the planet carrier is formed into a mounting groove with a convex middle step shape, the deep groove ball bearing is located in the mounting groove, the output end of the input gear shaft is formed into a stop part with a concave middle step shape, and the limiting component comprises the stop part and the mounting groove sidewall to limit the other deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220854770.2U CN217301462U (en) | 2022-04-11 | 2022-04-11 | Ultrashort rotary speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220854770.2U CN217301462U (en) | 2022-04-11 | 2022-04-11 | Ultrashort rotary speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301462U true CN217301462U (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220854770.2U Active CN217301462U (en) | 2022-04-11 | 2022-04-11 | Ultrashort rotary speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301462U (en) |
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2022
- 2022-04-11 CN CN202220854770.2U patent/CN217301462U/en active Active
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