CN105090459A - Worm and worm gear transmission device - Google Patents

Worm and worm gear transmission device Download PDF

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Publication number
CN105090459A
CN105090459A CN201410200680.1A CN201410200680A CN105090459A CN 105090459 A CN105090459 A CN 105090459A CN 201410200680 A CN201410200680 A CN 201410200680A CN 105090459 A CN105090459 A CN 105090459A
Authority
CN
China
Prior art keywords
worm
impeller
air outlet
drive unit
suction port
Prior art date
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.)
Pending
Application number
CN201410200680.1A
Other languages
Chinese (zh)
Inventor
王宣建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecovacs Robotics Suzhou Co Ltd
Original Assignee
Ecovacs Robotics Suzhou Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ecovacs Robotics Suzhou Co Ltd filed Critical Ecovacs Robotics Suzhou Co Ltd
Priority to CN201410200680.1A priority Critical patent/CN105090459A/en
Priority to PCT/CN2015/078874 priority patent/WO2015172720A1/en
Publication of CN105090459A publication Critical patent/CN105090459A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0416—Air cooling or ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a worm and worm gear transmission device. The worm and worm gear transmission device comprises a shell, wherein a worm (300) and a worm gear (700) which are meshed with each other are arranged in a containing 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; an impeller (900) is also arranged in the containing cavity (120); the impeller is connected with a second driving device and rotates under the driving of the second driving device; an air inlet (111) and an air outlet (101) are formed in the shell; air flow enters the shell from the air inlet (111) and is discharged from the air outlet (101) under the rotating action of the impeller. According to the worm and worm gear transmission device disclosed by the invention, the structure is simple, the cost is low, an air circulating system is formed in a bottom shell of the worm and worm gear transmission device, heat generated by meshing motion of the worm and the worm gear is effectively removed, the heat dissipation effect is good, and the working efficiency is high.

Description

Worm gearing
Technical field
The present invention relates to a kind of worm gearing, belong 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 installed on drain pan 100 by the ball bearing 500 that is arranged on two ends is rotatable, and one end is fixed in drain pan 100, and it is outer fixing with belt pulley 600 that the other end protrudes out drain pan 100.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 of worm screw 300 700.Also be provided with output gear 800 in accommodating cavity 120, worm gear 700 be wholely set driving cog 720, described output gear 800 engages each other with driving cog 720.
Shown in composition graphs 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, and the sliding friction mainly 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 cause worm and gear generation thermal wear, working life shortens, until can cause the rapid failure of kinematic pair.
In order to solve the problem, the drain pan 100 enclosed at worm gear 700 and worm screw 300 outside 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 the cost due to aluminum drain pan is much higher than plastic cement drain pan, the demand reduced costs cannot be met, therefore urgently develop a kind of with low cost, the cooling profiles of excellent effect.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, a kind of worm gearing is provided, the subelement structure realizing heat radiation is very simple, coordinate the suction port and air outlet that are opened on drain pan, form air circulation system in the bottom shell of transmission device, effectively the heat that worm gear, worm meshing campaign produce is got rid of, use the problem that in lower cost improvement transmission device drain pan, temperature is too high, good heat dissipation effect, working efficiency is high.
Technical problem to be solved of the present invention 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, also impeller is provided with in described accommodating cavity, described impeller is connected with the second drive unit, and rotate under the driving of described second drive unit, described housing offers suction port and air outlet, under the turning effort of impeller, air-flow enters housing from suction port and discharges from air outlet.
The needs that the concrete setting position of impeller in housing can be arranged according to practical structures adjust, and 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;
In order to energy saving, described 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, the side that described suction port is positioned at the top of worm and wheel engaging position, described air outlet is positioned at worm and wheel engaging position.
Further, in order to 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, also need certain requirement to the size of suction port and air outlet, 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 is wholely set the driving cog on described worm gear, and described output gear and described driving cog engage each other.
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, structure of the present invention is simple, with low cost, forms air circulation system in the bottom shell of transmission device, and effectively got rid of by the heat that worm gear, worm meshing campaign produce, good heat dissipation effect, working efficiency is high.
Below in conjunction with the drawings and specific embodiments, technological scheme of the present invention 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 invention;
Fig. 5 is sectional view of the present invention;
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 invention;
Fig. 9 is the A-A sectional view of Fig. 8.
Embodiment
Fig. 4 is explosive view of the present invention; Fig. 5 is sectional view of the present invention; 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.Shown in composition graphs 4 to Fig. 7, the invention provides a kind of worm gearing with heat-sink unit, say on the whole, comprise housing, in accommodating cavity 120 in housing, intermeshing worm screw 300 and worm gear 700 are installed, 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.Impeller 900 is also provided with in described accommodating cavity 120, described impeller is connected with the second drive unit, and rotate under the driving of described second drive unit, described housing offers suction port 111 and air outlet 101, under the turning effort of impeller, air-flow enters housing from suction port and discharges from air outlet.Specifically, described housing comprises drain pan 100 and upper cover 110, and transmission shaft 200 is installed on drain pan 100 by the ball bearing 500 that is arranged on two ends is rotatable, and one end is fixed in drain pan 100, and it is outer fixing with belt pulley 600 that the other end protrudes out drain pan 100.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 of worm screw 300 700.Also be provided with output gear 800 in accommodating cavity 120, worm gear 700 be wholely set driving cog 720, described output gear 800 engages each other with driving cog 720.Meanwhile, be fixed in the containing space between one end of drain pan 100 and drain pan 100 worm screw 300, be coaxially arranged with impeller 900 with worm screw 300.Upper cover 110 offers suction port 111, drain pan 100 offers air outlet 101.
In order to energy saving, described first drive unit and the second drive unit can be same drive unit.That is, impeller both by for driving the drive unit of worm and gear to drive, also can arrange independently drive unit.
In order to better heat radiation, described suction port 111 and air outlet 101 lay respectively at the both sides of worm and wheel engaging position, namely make the radiating airflow formed between suction port 111 and air outlet 101 flow through worm and wheel engagement place.Or, also described suction port can be arranged on the top of worm and wheel engaging position, side that described air outlet is 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, in order to 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 the side of the radial direction of impeller 900.
Meanwhile, according to the needs of air displacement size, also need certain requirement to the size of suction port and air outlet, 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, b in figure represent length and the width of air outlet respectively, and implications of other letters and representative thereof comprise: c be impeller top to sidewall ultimate range, d be impeller width, e be impeller blade height and f is that impeller top is to sidewall minimum range.Relation between above-mentioned parameters comprises: the area=a*b >=a* (c+e) of air outlet, wherein, and a>d, c>f, b >=(c+e).
In addition, described output unit comprises output gear and is wholely set the driving cog on described worm gear, and described output gear and described driving cog engage each other.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 be arranged according to practical structures adjust, and 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, the transmission shaft that impeller is located at worm screw is the preferably kind of drive, and rotated by worm screw impeller, rotating speed is high, and impeller size can design less; Impeller also can be coaxial with worm gear, rotated by worm gear impeller, and impeller can do greatly, and rotating speed is relatively little; In addition, impeller also can be driven by extra small motor, and now, impeller is different with the drive unit of worm and worm gear.
As shown in Figures 4 to 7, the working procedure of the worm gearing with heat-sink unit provided by the present invention is such: external power supply (not shown) is connected with belt pulley 600, belt pulley 600 drives transmission shaft 200 to rotate, and is fixed on the worm screw 300 on transmission shaft 200 and impeller 900 synchronous axial system.Worm screw 300 and worm gear 700 engage each other, and worm gear 700 to be engaged each other with output gear 800 by the driving cog 720 that is wholely set again and sent out by power.According to the output requirement of transmission device, output gear 800 also can not need, and as Fig. 6 and Fig. 4 compares, saves output gear 800, is directly exported by worm gear 700.
Fig. 8 is partial sectional view of the present invention; Fig. 9 is the A-A sectional view of Fig. 8.As Fig. 8 and shown in composition graphs 9, the present invention can the principle of effective auxiliary temperature-reducing be: the present invention is fixedly connected with impeller 900 on the transmission shaft 200 of worm screw 300, worm gear 700, the power that worm screw 300 motion produces, drive together with the impeller 900 coaxial with worm screw 300 and move, along with impeller 900 does High Rotation Speed, negative pressure between closed chamber between the blade of impeller 900 and drain pan 100 increases gradually, form parital vacuum, large quantity of air is inhaled into by the suction port 111 be arranged on drain pan 100, and the air be inhaled into be spued drain pan 100 by air outlet 101 fast under the effect of impeller 900 centrifugal force and parital vacuum, so air constantly sucks from suction port 111, spue from air outlet 101, form an air circulation system.Worm gear 700 and worm screw 300 engage the heat produced, and simultaneously along with the flowing of air, discharge drain pan 100, thus reach to the effect of transmission device internal cooling through air outlet 101.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 the suction port negative pressure in above-described embodiment can be adopted to suck except air, air can also be blown into blower.Suction port of the present invention 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 are good with the airflow passes worm and gear engagement place between suction port and air outlet.According to the difference of impeller, as used centrifugal cutter, axial fan, mixed flow fan etc., the setting position also corresponding adjustment thereupon of its air outlet.
In sum, structure of the present invention is simple, with low cost, forms air circulation system in the bottom shell of transmission device, and effectively got rid of by the heat that worm gear, worm meshing campaign produce, good heat dissipation effect, 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, impeller (900) is also provided with in described accommodating cavity (120), described impeller is connected with the second drive unit, and rotate under the driving of described second drive unit, described housing offers suction port (111) and air outlet (101), under the turning effort of impeller, air-flow enters housing from suction port (111) and discharges from air outlet (101).
2. worm gearing as claimed in claim 1, it 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, it 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, it is characterized in that, described first drive unit and the second drive unit are same drive unit.
5. the worm gearing as described in any one of claim 2,3 or 4, 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 any one of claim 2,3 or 4, it is characterized in that, described suction port (111) is positioned at the top of worm and wheel engaging position, described air outlet (101) be positioned at the side of 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, it 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, it 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 engage each other.
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, it is characterized in that, described suction port (111) place is also connected with external blower group.
CN201410200680.1A 2014-05-13 2014-05-13 Worm and worm gear transmission device Pending CN105090459A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201410200680.1A CN105090459A (en) 2014-05-13 2014-05-13 Worm and worm gear transmission device
PCT/CN2015/078874 WO2015172720A1 (en) 2014-05-13 2015-05-13 Worm-gear transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410200680.1A CN105090459A (en) 2014-05-13 2014-05-13 Worm and worm gear transmission device

Publications (1)

Publication Number Publication Date
CN105090459A true CN105090459A (en) 2015-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410200680.1A Pending CN105090459A (en) 2014-05-13 2014-05-13 Worm and worm gear transmission device

Country Status (2)

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CN (1) CN105090459A (en)
WO (1) WO2015172720A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628359A (en) * 2021-01-11 2021-04-09 郝子豪 Rolling worm gear power machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107524758B (en) * 2017-08-29 2024-05-07 宁波胜景传动科技有限公司 Multifunctional worm gear speed reducer
CN113357169B (en) * 2020-03-04 2024-07-19 核工业理化工程研究院 Low-vacuum high-temperature carrier gas circulating pump and high-temperature carrier gas driving method and application thereof

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US2548805A (en) * 1946-08-16 1951-04-10 Foote Bros Gear And Machine Co Casing structure for reduction drive units
DE102012025596A1 (en) * 2012-07-06 2014-01-09 Sew-Eurodrive Gmbh & Co Kg Gearbox i.e. bevel gearbox, has entry region provided at axial position such that entry region surface extends only in radial and circumferential directions and exit region surface extends in radial, circumferential and axial directions
CN202812151U (en) * 2012-09-07 2013-03-20 苏州通润驱动设备股份有限公司 Bearing lubrication structure of reduction gearbox
CN203051691U (en) * 2012-12-28 2013-07-10 浙江金浪动力有限公司 Driven wheel with cooling mechanism
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628359A (en) * 2021-01-11 2021-04-09 郝子豪 Rolling worm gear power machine

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Address after: 215168 Wuzhong District, Jiangsu, Stone Lake Road West, No. 108

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