CN214617771U - Small-size oilless right angle bi-polar output reduction gear - Google Patents
Small-size oilless right angle bi-polar output reduction gear Download PDFInfo
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- CN214617771U CN214617771U CN202022693649.XU CN202022693649U CN214617771U CN 214617771 U CN214617771 U CN 214617771U CN 202022693649 U CN202022693649 U CN 202022693649U CN 214617771 U CN214617771 U CN 214617771U
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Abstract
The utility model provides a small-size oilless right angle bi-polar output reduction gear, including motor, motor shaft, worm wheel, worm, reduction gear box, bearing and output shaft, be equipped with the worm wheel chamber of placing the worm wheel and the worm chamber of placing the worm in the reduction gear box, the worm wheel chamber communicates with each other with the worm chamber, the worm wheel is fixedly connected with the output shaft, the output shaft stretches out outside the reduction gear box; the motor shaft extends into the worm cavity, the worm is directly sleeved on the motor shaft, and the worm is fixedly connected with the motor shaft; the middle part of the outer wall of the output shaft is provided with a circumferential connecting bulge, and the worm wheel is fixedly sleeved outside the connecting bulge. The speed reducer has the characteristics of large reduction ratio, small volume, oil-free lubrication, right-angle double-end output and the like, is processed into a worm wheel after being injected with an output shaft, greatly enhances the self-lubricating property of the worm wheel, generates less heat due to friction, does not need lubricating oil for lubrication and heat dissipation, and is smaller in size and convenient to install.
Description
Technical Field
The utility model relates to a small-size oilless right angle bi-polar output reduction gear for industry and automatic control field transmission rotational speed match and torque transmission.
Background
The common speed reducer used in the industrial and automatic control fields is an independent part formed by the modes of gear transmission, worm and gear transmission, gear-worm transmission and the like which are enclosed in a rigid shell. The component is connected with the prime motor and the working machine by a coupling. Because the mechanical parts are complicated in connection, transmission, lubrication, heat dissipation and other structures, the size of the mechanical parts is large, and lubricating oil is usually used for lubrication and heat dissipation, so that oil leakage and pollution are easily caused. Therefore, the common speed reducer is limited to be used in places with environmental protection requirements and narrow space.
The motor-driven worm gear reducer is composed of a motor, a motor support, a coupling, a transmission shaft, a worm wheel, a worm, a reducer box body, a bearing, an output shaft, lubricating oil and the like, and is shown in figure 1 (a common worm gear reducer). After the motor runs, the motor shaft is connected with the transmission shaft through the coupler, the worm is arranged on the rotating shaft and meshed with the worm wheel arranged on the output shaft, and rotation and torque are transmitted to the executing mechanism.
The motor is supported by a motor bracket, and the transmission shaft and the output shaft are arranged on the reducer box body through bearings. The speed reducer box body is an important structural part which is used for supporting the shaft part to ensure the correct position of a transmission accessory and supporting the load of the speed reducer. The friction in the process of meshing the worm wheel and the worm generates heat and reduces the lubrication required by the friction, and the lubrication is realized by lubricating oil in the reducer case, so that structures such as an oil seal and an end cover need to be installed on the reducer case. The oil gas generated in the box body is discharged through the oil cover after long-time running, and the lower part of the box body is also provided with structural components such as an oil discharge screw plug for replacing lubricating oil and the like.
Therefore, the common worm gear reducer has the advantages of complex structure, larger volume and troublesome maintenance, and lubricating oil is easy to leak to cause environmental pollution.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a compact structure, light and handy, the small-size oilless right angle bi-polar output reduction gear of small-size efficient, reasonable in design has overcome prior art's not enough, has good effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a small-sized oilless right-angle double-end output reducer comprises a motor, a motor shaft, a worm wheel, a worm, a reducer box body, a bearing and a double output shaft; a worm wheel cavity for placing a worm wheel and a worm cavity for placing a worm are arranged in the speed reducer box body, wherein the width of the speed reducer box body is 70.5mm, the height of the speed reducer box body is 73.5mm, and the thickness of the speed reducer box body is 42 mm; the worm wheel cavity is communicated with the worm cavity, the worm wheel and the worm are matched with each other, the worm wheel is fixedly connected with the output shaft, and the output shafts at two ends extend out of the reducer box and are suspended;
preferably, a motor shaft of the motor extends into the worm cavity from the outside of the reducer box body, the worm is directly sleeved on the motor shaft, and the worm is fixedly connected with the motor shaft, wherein the diameter of a top circle of the worm is 15mm, the diameter of a reference circle of the worm is 12mm, and the diameter of a root circle of the worm is 8.4 mm; the middle part of the outer wall of the output shaft is provided with a circumferential connecting bulge, the worm wheel is fixedly sleeved outside the connecting bulge, and the axial length of the output shaft is 90 mm.
Preferably, the end of the motor shaft is located in the worm cavity, the motor shaft adopts a cantilever beam structure, one end of the motor shaft is connected with the reducer box body through a bearing, the other end of the motor shaft is suspended, the diameter of the motor shaft is 7mm, and the shaft length is 60mm, so that the whole system is compact, and the installation is more convenient.
Preferably, the worm wheel and the output shaft are connected into a whole through injection molding, the installation structure is avoided, the transmission system is simpler, and the worm wheel is made of polyether-ether-ketone materials.
Preferably, the cross section of the connecting protrusion is in the shape of a regular hexagon, the distance between opposite sides of the regular hexagon is 17mm, and a plurality of annular grooves are formed in the outer wall of the connecting protrusion.
The utility model discloses following beneficial effect has:
the utility model has the advantages of it is following: 1. the structure is compact, light, small and efficient; 2. oil-free lubrication and maintenance are not needed; 3. the heat dissipation performance is good; 4. no coupler is used, so that related accessories such as bearings, oil-free parts, oil seals and the like are reduced, and the cost is reduced; 5. the operation is stable, and the noise is low.
The utility model provides a small-size no oily right angle bi-polar output reduction gear adopts the oil-free design, and right angle bi-polar output makes it be adapted to symmetrical drive mechanism in, and the oil-free lubrication mode can make the product be used for occasions such as food, medicine that require high to the environment, need not to maintain characteristics such as maintenance, miniaturized volume, light in weight and makes its application more extensive.
Drawings
FIG. 1 is a schematic structural diagram of a conventional worm and gear reducer;
wherein, 1 is a motor; 2 is a motor bracket; 3 is a coupling; 4 is a reducer box body; 5 is an output shaft; 6 is a transmission shaft; 7 is a bearing; 8 is a worm; 9 is a worm wheel; 10 is lubricating grease;
FIG. 2 is a front view of a small oilless right-angle double-ended output reducer;
wherein 11 is a motor; 12 is a motor shaft; 13 is a worm wheel; 14 is a worm; 15 is a reducer box body; 16 is a bearing; 17 is a worm cavity; 18 is a retainer ring; 19 is a rivet;
FIG. 3 is a side sectional view of the middle reducer case of the present invention;
wherein 20 is an output shaft; 21 is a worm wheel cavity; 22 is a bearing;
fig. 4 is a schematic view of the structure of the motor of the present invention;
FIG. 5 is a schematic structural view of a middle worm wheel, a worm and a dual output shaft according to the present invention;
fig. 6 is a front view of the middle dual output shaft of the present invention;
wherein 23 is a connecting bulge;
fig. 7 is a side view of the middle dual output shaft of the present invention;
wherein 24 is a semicircular key groove; 25 is a ring groove;
fig. 8 is a schematic structural view of the worm in the present invention;
FIG. 9 is a front view of the housing of the speed reducer of the present invention;
FIG. 10 is a side view of the housing of the speed reducer of the present invention;
FIG. 11 is a side sectional view of the reducer case according to the present invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
as shown in fig. 2 to 11, a small oil-free right-angle double-ended output reducer includes a motor 11, a motor shaft 12, a worm wheel 13, a worm 14, a reducer case 15, a bearing 16, and a dual output shaft 20.
Design the installation hole site on the 15 outer walls of reduction case, with motor 11 through flange end face hole direct mount outside reduction case 15, need not parts such as motor support, shaft coupling, motor 11 mounting flange dish length of side is 40mm, and motor flange location size is 2.5mm, and the upper deviation is +0.2mm, and the lower deviation is +0.1 mm. The motor shaft 12 of the motor 11 extends from the outside of the gearbox housing 15 into the worm cavity 17.
The motor shaft 12 is matched with the reducer box body 15 through the bearing 16, the distance from the center of the motor shaft 12 to the outer edge of the bearing 16 is 19.5mm, the error is +/-0.05 mm, the radius of an inter-shaft transition fillet of the motor shaft is 0.3mm, the chamfer angle is 60 degrees, and the side length of the chamfer is 0.9 mm. The end part of the motor shaft 12 is positioned in the worm cavity 17, and a cantilever beam structure is adopted, so that the bearing structure at the other end is reduced, the whole system is compact, and the installation is more convenient. Wherein, the diameter of the bearing cavity is 30mm, the upward deviation is +/-0.034 mm, the downward deviation is 0, the width of the bearing cavity is 10mm, the diameter of the bearing 16 is 8mm, the upward deviation is 0, the downward deviation is-0.015 mm, the length of the working shaft is 40mm, and the distance from the bearing 16 to the outer edge of the reducer box body 15 is 2.1 mm.
The worm 14 is directly sleeved on the motor shaft 12, the diameter of the addendum circle of the worm 14 is 15mm, the diameter of the reference circle is 12mm, the diameter of the dedendum circle is 8.4mm, the diameter of the rear end part of the worm 14 is 12.4mm, the axial length of the worm 14 is 33mm, the radius of a transition fillet of the worm is 3.5mm, the roughness of the worm is 0.8, the worm 14 and the motor shaft 12 are riveted and fixed through a rivet 19, the outer diameter of the rivet 19 is 2mm, the upper deviation is-0.01 mm, the lower deviation is-0.015 mm, the motor shaft 12 adopts a specially-customized lengthening shaft, the axial length is 60mm, the diameter of the shaft section is 7mm, the upper deviation is +0.02mm, the lower deviation is +0.01mm, and the diameter of the rear end is 9 mm. Therefore, the worm 14, the bearing 16 and the retainer ring 18 can be arranged on the motor shaft 2 at one time and can be axially positioned, wherein the outer diameter of a retainer ring hole of the worm 14 is 24mm, the groove width of the retainer ring 18 is 1mm, the upper deviation is +0.02mm, the lower deviation is +0.01mm, the positioning size of the retainer ring 18 is 12mm, the error is +/-0.1, and the lengths of the bearing 16 and the retainer ring 18 are 17 mm.
Two ends of the double output shaft 20 respectively extend out of the reducer box body 15, the shaft length of the double output shaft is 90mm, the aperture is 12mm, and symmetrical semicircular key grooves 24 are designed at two ends of the double output shaft 20 and connected with a working machine or an actuating mechanism to realize double-end output. The middle part of the outer wall of the double output shaft 20 is provided with a circumferential connecting bulge 23, the cross section of the connecting bulge 23 is in the shape of a regular hexagon, the distance between opposite sides of the regular hexagon is 17mm, and the outer wall of the connecting bulge 23 is provided with three ring grooves 25. The worm wheel 13 is fixedly sleeved on the outer side of the connecting protrusion 23, the worm wheel 13 is made of polyether-ether-ketone materials, the worm wheel 13 and the double output shafts 20 are connected into a whole through an injection molding process, the installation structure is avoided, and the transmission system is simpler.
The worm wheel 13 and the worm 14 are matched with each other, the worm wheel 13 is fixedly connected with the double output shaft 20, the center distance of the worm wheel and the worm is 22.5mm, the error is +/-0.05 mm, the center diameter of the flange plate mounting hole is 46mm, the double output shaft 20 and the worm wheel 13 form an integrated worm wheel assembly, the integrated worm wheel assembly is installed in a bearing seat of the reducer box body 15 through a bearing 22, and the lower bottom surface of the box body is provided with a mounting screw hole, so that the motor reducer can be conveniently fixed to an application place.
The volume of the small oil-free AC motor speed reducer assembled by the embodiment is 73.5X70.5X45, the weight is 1.3kg, on the basis, the speed reduction ratio can be realized to be 7.33, the output rated torque is 2.3N.m, the rated power is 100w, and the small oil-free AC motor speed reducer is commonly used for mechanical transmission in the fields of industry and automatic control.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. A small-sized oilless right-angle double-end output reducer comprises a motor, a motor shaft, a worm wheel, a worm, a reducer box body, a bearing and a double output shaft; a worm wheel cavity for placing a worm wheel and a worm cavity for placing a worm are arranged in the speed reducer box body, wherein the width of the speed reducer box body is 70.5mm, the height of the speed reducer box body is 73.5mm, and the thickness of the speed reducer box body is 42 mm; the worm wheel cavity is communicated with the worm cavity, the worm wheel and the worm are matched with each other, the worm wheel is fixedly connected with the output shaft, and the output shafts at two ends extend out of the reducer box and are suspended;
it is characterized in that: a motor shaft of the motor extends into a worm cavity from the outside of the reducer box body, a worm is directly sleeved on the motor shaft, and the worm is fixedly connected with the motor shaft, wherein the diameter of a tip circle of the worm is 15mm, the diameter of a reference circle of the worm is 12mm, and the diameter of a root circle of the worm is 8.4 mm; the middle part of the outer wall of the output shaft is provided with a circumferential connecting bulge, the worm wheel is fixedly sleeved outside the connecting bulge, and the axial length of the output shaft is 90 mm.
2. A small oil-free right-angle double-ended output reducer as defined in claim 1, wherein: the end of the motor shaft is located in the worm cavity, the motor shaft is in a cantilever beam structure, one end of the motor shaft is connected with the reducer box body through a bearing, the other end of the motor shaft is suspended, the diameter of the motor shaft is 7mm, and the shaft length is 60 mm.
3. A small oil-free right-angle double-ended output reducer as defined in claim 1, wherein: the worm wheel and the output shaft are connected into a whole by injection molding and are made of polyether-ether-ketone materials.
4. A small oil-free right-angle double-ended output reducer as defined in claim 1, wherein: the cross section of the connecting bulge is in the shape of a regular hexagon, the distance between opposite sides of the regular hexagon is 17mm, and a plurality of annular grooves are formed in the outer wall of the connecting bulge.
5. A small oil-free right-angle double-ended output reducer as defined in claim 1, wherein: the volume is 73.5X70.5X45, the weight is 1.3kg, on the basis of which the reduction ratio can be realized to be 7.33, the output rated torque is 2.3N.m, and the rated power is 100 w.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693649.XU CN214617771U (en) | 2020-11-20 | 2020-11-20 | Small-size oilless right angle bi-polar output reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693649.XU CN214617771U (en) | 2020-11-20 | 2020-11-20 | Small-size oilless right angle bi-polar output reduction gear |
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| Publication Number | Publication Date |
|---|---|
| CN214617771U true CN214617771U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022693649.XU Active CN214617771U (en) | 2020-11-20 | 2020-11-20 | Small-size oilless right angle bi-polar output reduction gear |
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| Country | Link |
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| CN (1) | CN214617771U (en) |
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- 2020-11-20 CN CN202022693649.XU patent/CN214617771U/en active Active
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