CN203892533U - Worm and worm gear transmission device - Google Patents
Worm and worm gear transmission device Download PDFInfo
- Publication number
- CN203892533U CN203892533U CN201420243740.3U CN201420243740U CN203892533U CN 203892533 U CN203892533 U CN 203892533U CN 201420243740 U CN201420243740 U CN 201420243740U CN 203892533 U CN203892533 U CN 203892533U
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- China
- Prior art keywords
- worm
- impeller
- air outlet
- drive unit
- suction port
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 230000004323 axial length Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000000191 radiation effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000002360 explosive Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Gear Transmission (AREA)
Abstract
A worm and worm gear transmission device comprises a shell. A worm (300) engaged with a worm gear (700) is arranged in an accommodating cavity (120) in the shell, one end of a transmission shaft of the worm is connected with a first driving device, the worm gear is connected with an output device and driven to rotate through a second driving device, an air inlet (111) and an air outlet (101) are formed in the shell, and airflow enters the shell from the air inlet (111) and is discharged from the air outlet (101) under the action of an impeller. The worm and gear transmission device is simple in structure and low in cost; an air circulation system is formed inside the bottom shell of the transmission device, heat generated from engaging motion of the worm gear and the worm can be effectively discharged, heat radiation effect is good, and operation efficiency is high.
Description
Technical field
The utility model relates to a kind of worm gearing, belongs to machinery manufacturing technology field.
Background technique
Fig. 1 is the explosive view of existing worm gearing; Fig. 2 is the sectional view of existing worm gearing; Fig. 3 is the plan view of Fig. 2.As shown in Figure 1 to Figure 3, existing worm gearing comprises drain pan 100 and upper cover 110, transmission shaft 200 is by being arranged on rotatable being installed on drain pan 100 of ball bearing 500 at two ends, and one end is fixed in drain pan 100, and the other end protrudes out outside drain pan 100 and belt pulley 600 is fixed.Worm screw 300 is fixed on transmission shaft 200 by resilient key 400, is provided with accommodating cavity 120 in drain pan 100, is installed in described accommodating cavity 120 by gear shaft 710 with the intermeshing worm gear 700 of worm screw 300.In accommodating cavity 120, be also provided with output gear 800, be wholely set driving cog 720 on worm gear 700, described output gear 800 is intermeshing with driving cog 720.
In conjunction with shown in Fig. 1 to Fig. 3, in this worm gearing, worm gear 700 and worm screw 300 can produce amount of heat in the process of gear motion, are mainly that the sliding friction between worm and worm wheel produces amount of heat.If employing plastic cement material, because the physical property of plastic cement can reduce along with the rising of temperature, finally causes worm and gear generation thermal wear, shorten working life, until can cause the rapid failure of kinematic pair.
In order to address the above problem, the drain pan 100 enclosing in worm gear 700 and worm screw 300 outsides is generally aluminum drain pan, and the heat rapid diffusion that worm and gear can be produced in movement process is like this gone out, and realizes cooling-down effect.But, because the cost of aluminum drain pan is much higher than plastic cement drain pan, cannot meet the demand reducing costs, therefore urgently develop a kind of with low cost, the cooling profiles of effect excellence.
Model utility content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, a kind of worm gearing is provided, the subelement structure that realizes heat radiation is very simple, coordinate and be opened in suction port and the air outlet on drain pan, at the inner air circulation system that forms of the drain pan of transmission device, the heat effectively worm gear, worm meshing campaign being produced is got rid of, with lower cost improvement the problem of the interior excess Temperature of transmission device drain pan, good heat dissipation effect, working efficiency is high.
Technical problem to be solved of the present utility model is achieved by the following technical solution:
A kind of worm gearing, comprise housing, in accommodating cavity in housing, intermeshing worm and worm wheel are installed, one end of the transmission shaft of described worm screw is connected with the first drive unit, described worm gear is connected with output unit, in described accommodating cavity, be also provided with impeller, described impeller is connected with the second drive unit, and rotate under the driving of described the second drive unit, on described housing, offer suction port and air outlet, under the turning effort of impeller, air-flow enters housing and discharges from air outlet from suction port.
The needs that the concrete setting position of impeller in housing can arrange according to practical structures are adjusted, such as, described impeller can be arranged on the transmission shaft of described worm screw; Or described impeller also can be arranged on the transmission shaft of described worm gear;
For energy saving, described the first drive unit and the second drive unit can be same drive unit.
Described suction port and air outlet lay respectively at the both sides of worm and wheel engaging position;
Or described suction port is positioned at the side that the top of worm and wheel engaging position, described air outlet are positioned at worm and wheel engaging position.
Further, for exhaust and convenient, described air outlet to offer position corresponding with the fixed position of described impeller.
Meanwhile, according to the needs of air displacement size, the size of suction port and air outlet is also needed to have certain requirement, described air outlet is greater than the axial length of impeller along the axial length of transmission; The area of described suction port is more than or equal to the area of monolithic impeller blade.
In addition, described output unit comprises output gear and be wholely set the driving cog on described worm gear, and described output gear and described driving cog are intermeshing.
Described drive unit comprises external power supply and coupled belt pulley, and described belt pulley is installed on described transmission shaft.
In order to increase work efficiency, described suction port place is also connected with external blower group.
In sum, the utility model is simple in structure, with low cost, and at the inner air circulation system that forms of drain pan of transmission device, the heat effectively worm gear, worm meshing campaign being produced is got rid of, good heat dissipation effect, and working efficiency is high.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the explosive view of existing worm gearing;
Fig. 2 is the sectional view of existing worm gearing;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is explosive view of the present utility model;
Fig. 5 is sectional view of the present utility model;
Fig. 6 is the plan view of Fig. 5;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is partial sectional view of the present utility model;
Fig. 9 is the A-A sectional view of Fig. 8.
Embodiment
Fig. 4 is explosive view of the present utility model; Fig. 5 is sectional view of the present utility model; Fig. 6 is the plan view of Fig. 5, and Fig. 6 omits the output gear 800 in Fig. 4; Fig. 7 is the left view of Fig. 6.In conjunction with shown in Fig. 4 to Fig. 7, the utility model provides a kind of worm gearing with heat-sink unit, say on the whole, comprise housing, intermeshing worm screw 300 and worm gear 700 are installed in the accommodating cavity 120 in housing, one end of the transmission shaft of described worm screw is connected with the first drive unit, and described worm gear is connected with output unit.In described accommodating cavity 120, be also provided with impeller 900, described impeller is connected with the second drive unit, and rotate under the driving of described the second drive unit, on described housing, offer suction port 111 and air outlet 101, under the turning effort of impeller, air-flow enters housing and discharges from air outlet from suction port.Specifically, described housing comprises drain pan 100 and upper cover 110, and transmission shaft 200 is by being arranged on rotatable being installed on drain pan 100 of ball bearing 500 at two ends, and one end is fixed in drain pan 100, and the other end protrudes out outside drain pan 100 and belt pulley 600 is fixed.Worm screw 300 is fixed on transmission shaft 200 by resilient key 400, is installed in described accommodating cavity 120 by gear shaft 710 with the intermeshing worm gear 700 of worm screw 300.In accommodating cavity 120, be also provided with output gear 800, be wholely set driving cog 720 on worm gear 700, described output gear 800 is intermeshing with driving cog 720.Meanwhile, in worm screw 300 is fixed on one end and the containing space between drain pan 100 of drain pan 100, be coaxially arranged with impeller 900 with worm screw 300.On upper cover 110, offer suction port 111, on drain pan 100, offer air outlet 101.
For energy saving, described the first drive unit and the second drive unit can be same drive unit.That is to say, impeller both can, by for driving the drive unit of worm and gear to drive, also can arrange independently drive unit.
For better heat radiation, described suction port 111 and air outlet 101 lay respectively at the both sides of worm and wheel engaging position, the radiating airflow that makes between suction port 111 and air outlet 101 the to form worm and wheel engagement place of flowing through.Or, also described suction port can be arranged on to the side that the top of worm and wheel engaging position, described air outlet are positioned at worm and wheel engaging position.Those skilled in the art can select the setting position of suction port 111 and air outlet 101 according to actual needs.Further, for exhaust and convenient, described air outlet 101 to offer position corresponding with the fixed position of described impeller.In the present embodiment, air outlet 101 is opened on the drain pan 100 of a side radially of impeller 900.
Meanwhile, according to the needs of air displacement size, the size of suction port and air outlet is also needed to have certain requirement, described air outlet is greater than the axial length of impeller along the axial length of transmission; The area of described suction port is more than or equal to the area of monolithic impeller blade.More specifically, as shown in Figure 9, a in figure, b represent respectively length and the width of air outlet, and the implication of other letters and representative thereof comprises: c is that impeller top is that impeller width, e are that impeller blade height and f are that impeller top is to sidewall minimum range to sidewall ultimate range, d.Relation between above-mentioned parameters comprises: the area=a*b >=a* of air outlet (c+e), wherein, and a>d, c>f, b >=(c+e).
In addition, described output unit comprises output gear and be wholely set the driving cog on described worm gear, and described output gear and described driving cog are intermeshing.Described drive unit comprises external power supply and coupled belt pulley, and described belt pulley is installed on described transmission shaft.
The needs that the concrete setting position of impeller in housing can arrange according to practical structures are adjusted, such as, described impeller can be arranged on the transmission shaft of described worm screw; Or described impeller also can be arranged on the transmission shaft of described worm gear.Specifically, impeller is located on the transmission shaft of worm screw as the kind of drive preferably, by worm screw impeller, is rotated, and rotating speed is high, and impeller size can design littlely; Impeller also can be coaxial with worm gear, by worm gear impeller, rotated, and impeller can be done greatly, and rotating speed is relatively little; In addition, impeller also can be driven by extra small motor, and now, the drive unit of impeller and worm and worm gear is different.
As shown in Figures 4 to 7, the working procedure of the worm gearing with heat-sink unit provided by the utility model is such: external power supply (not shown) is connected with belt pulley 600, belt pulley 600 drives transmission shaft 200 to rotate, and the worm screw 300 and the impeller 900 that are fixed on transmission shaft 200 synchronously rotate.Worm screw 300 is intermeshing with worm gear 700, and worm gear 700 sends out power with output gear 800 is intermeshing by the driving cog 720 being wholely set again.According to the output requirement of transmission device, output gear 800 can not need yet, and as Fig. 6 compares with Fig. 4, saves output gear 800, directly by worm gear 700, is exported.
Fig. 8 is partial sectional view of the present utility model; Fig. 9 is the A-A sectional view of Fig. 8.As Fig. 8 and in conjunction with as shown in Fig. 9, the utility model effectively principle of auxiliary temperature-reducing is: the utility model is fixedly connected with impeller 900 on the transmission shaft 200 of worm screw 300, worm gear 700, the power that worm screw 300 motions produce, motion together with the drive impeller 900 coaxial with worm screw 300, along with impeller 900 is done High Rotation Speed, negative pressure between the closed chamber that the blade of impeller 900 and drain pan are 100 increases gradually, form parital vacuum, large quantity of air is inhaled into by the suction port 111 being arranged on drain pan 100, and the air being inhaled under the effect of impeller 900 centrifugal force and parital vacuum fast by air outlet 101 drain pan 100 that spues, so air constantly sucks from suction port 111, from air outlet, 101 spue, form an air circulation system.The heat that worm gear 700 and worm screw 300 engagements produce, the while, along with air flows, discharges drain pans 100 through air outlet 101, thereby reaches the effect to transmission device internal cooling.B in Fig. 8 and Fig. 9 represents the flow direction of air-flow in housing.
In order to increase work efficiency, described suction port can also be connected with external blower group.Except can adopting the suction port negative pressure air amount in above-described embodiment, can also be blown into air with blower.Suction port of the present utility model and air outlet can be arranged on multiple position, except the set-up mode of the present embodiment, are arranged on other place and are also fine, and the airflow passes worm and gear engagement place of take between suction port and air outlet is as good.According to the difference of impeller, as used centrifugal cutter, axial fan, mixed flow fan etc., the setting position of its air outlet is corresponding adjustment thereupon also.
In sum, the utility model is simple in structure, with low cost, and at the inner air circulation system that forms of drain pan of transmission device, the heat effectively worm gear, worm meshing campaign being produced is got rid of, good heat dissipation effect, and working efficiency is high.
Claims (12)
1. a worm gearing, comprise housing, intermeshing worm screw (300) and worm gear (700) are installed in the accommodating cavity (120) in housing, one end of the transmission shaft of described worm screw is connected with the first drive unit, described worm gear is connected with output unit, it is characterized in that, in described accommodating cavity (120), be also provided with impeller (900), described impeller is connected with the second drive unit, and rotate under the driving of described the second drive unit, on described housing, offer suction port (111) and air outlet (101), under the turning effort of impeller, air-flow enters housing and (101) discharge from air outlet from suction port (111).
2. worm gearing as claimed in claim 1, is characterized in that, described impeller (900) is arranged on the transmission shaft of described worm screw.
3. worm gearing as claimed in claim 1, is characterized in that, described impeller (900) is arranged on the transmission shaft of described worm gear.
4. worm gearing as claimed in claim 1, is characterized in that, described the first drive unit and the second drive unit are same drive unit.
5. the worm gearing as described in claim 2,3 or 4 any one, is characterized in that, described suction port (111) and air outlet (101) lay respectively at the both sides of worm and wheel engaging position.
6. the worm gearing as described in claim 2,3 or 4 any one, is characterized in that, described suction port (111) is positioned at the side that the top of worm and wheel engaging position, described air outlet (101) are positioned at worm and wheel engaging position.
7. the worm gearing as described in claim 5 or 6, is characterized in that, described air outlet (101) to offer position corresponding with the fixed position of described impeller (900).
8. worm gearing as claimed in claim 7, is characterized in that, described air outlet (111) are greater than the axial length of impeller along the axial length of transmission.
9. worm gearing as claimed in claim 7, is characterized in that, the area of described suction port (111) is more than or equal to the area of monolithic impeller blade.
10. worm gearing as claimed in claim 1, it is characterized in that, described output unit comprises output gear (800) and is wholely set the driving cog (720) on described worm gear (700), and described output gear and described driving cog are intermeshing.
11. worm gearings as claimed in claim 1, is characterized in that, described drive unit comprises external power supply and coupled belt pulley (600), and described belt pulley is installed on described transmission shaft (200).
12. worm gearings as claimed in claim 1, is characterized in that, described suction port (111) is located to be also connected with external blower group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243740.3U CN203892533U (en) | 2014-05-13 | 2014-05-13 | Worm and worm gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243740.3U CN203892533U (en) | 2014-05-13 | 2014-05-13 | Worm and worm gear transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892533U true CN203892533U (en) | 2014-10-22 |
Family
ID=51718941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420243740.3U Expired - Lifetime CN203892533U (en) | 2014-05-13 | 2014-05-13 | Worm and worm gear transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172720A1 (en) * | 2014-05-13 | 2015-11-19 | 科沃斯机器人有限公司 | Worm-gear transmission device |
| CN108825763A (en) * | 2018-06-26 | 2018-11-16 | 吉安汽车配件(苏州)有限公司 | A kind of gear casing and its production method |
-
2014
- 2014-05-13 CN CN201420243740.3U patent/CN203892533U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172720A1 (en) * | 2014-05-13 | 2015-11-19 | 科沃斯机器人有限公司 | Worm-gear transmission device |
| CN105090459A (en) * | 2014-05-13 | 2015-11-25 | 科沃斯机器人有限公司 | Worm and worm gear transmission device |
| CN108825763A (en) * | 2018-06-26 | 2018-11-16 | 吉安汽车配件(苏州)有限公司 | A kind of gear casing and its production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215168 Wuzhong District, Jiangsu, Stone Lake Road West, No. 108 Patentee after: ECOVACS ROBOTICS Co.,Ltd. Address before: 215168 Wuzhong District, Jiangsu, Stone Lake Road West, No. 108 Patentee before: ECOVACS ROBOTICS Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |