CN103244427A - Rotor positioning lock mechanism of roots vacuum pump - Google Patents
Rotor positioning lock mechanism of roots vacuum pump Download PDFInfo
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- CN103244427A CN103244427A CN 201310153101 CN201310153101A CN103244427A CN 103244427 A CN103244427 A CN 103244427A CN 201310153101 CN201310153101 CN 201310153101 CN 201310153101 A CN201310153101 A CN 201310153101A CN 103244427 A CN103244427 A CN 103244427A
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- gear
- rotor
- friction top
- roots pump
- locking mechanism
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Abstract
The invention relates to a rotor positioning lock mechanism of a roots vacuum pump. The rotor positioning lock mechanism comprises a gear, a clamping cap and a rotor shaft for driving a driving rotor and/or a driven rotor to rotate, and the gear is sleeved on the rotor shaft; and the clamping cap suppresses the rotor shaft, is assembled with the gear in a pin hole by a locating pin, and is fixedly connected. The rotor positioning lock mechanism of provided by invention has the advantages that the rotor and the gear of the roots vacuum pump are exactly positioned, the locking is reliable, and the processed difficulty of the rotor and the gear is reduced.
Description
Technical field
The invention belongs to the product structure technical field, relate to a kind of locking mechanism, relate in particular to a kind of Roots pump rotor location locking mechanism.
Background technique
The rotor of Roots pump is generally all by a pair of synchromesh gear transmission, and power rotor and driven rotor have certain angular position relation respectively and between two gears, a pair of rotor correct engagement during for assurance work, and the positioning and locking of gear and rotor is extremely important.If can not accurately locate, power rotor and driven rotor will interfere when rotating, and cause faults such as noise is big, stuck.For rotor and gear are positioned and lock, the method that adopts usually has following several at present: two rotors (power rotor and driven rotor) are connected to come transmission with main driven gear by key respectively; With screw rotor and gear are connected; Male cone (strobilus masculinus) adds the mode of screw in compression in adopting.
All there is certain deficiency in the Roots pump rotor that adopts with location and the locking mode of gear at present: adopt key to be connected, though can realize reliable location, but the position degree requirement to molded lines of rotor and keyway, the form of gear tooth and keyway is very high, causes processing difficulties; The same existence the position degree requirement height of molded lines of rotor with tapped hole (hole), the form of gear tooth and hole (tapped hole) of mode of adopting screw that rotor and gear are connected, the problem of processing difficulties, if the gap of hole and screw is increased, reduce difficulty of processing, adjust during assembling, then have screw loosening in the work, rotor is under the effect of opposing torque, with the skew of gear generation angle, and then cause the stuck fault of rotor; Though the mode that adopts interior male cone (strobilus masculinus) to add screw in compression has reduced the difficulty of processing, only need when assembling, to carry out using screw lock after the angle adjustment, but this mode by the frictional force transmission also exists locking unreliable, rotor is under the effect of opposing torque, be offset with gear generation angle, and then cause the problem of the stuck fault of rotor.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in the background technique, the invention provides a kind of Roots pump rotor and gear accurately location and reliable Roots pump rotor location locking mechanism of locking and can reduce the difficulty of rotor and Gear Processing of making.
Technical solution of the present invention is: the invention provides a kind of Roots pump rotor location locking mechanism, its special way is: the rotor shaft that described Roots pump rotor location locking mechanism comprises gear, friction top and is used for driving power rotor and/or driven rotor rotation; Described gear set is on rotor shaft; Fixedly connected behind the described friction top compacting rotor shaft with after gear is joined brill pinhole and the locating stud of packing into.
Above-mentioned rotor shaft is one or more levels step axle; Described gear set also only leans against on the step surface of step axle in rotor shaft; Described friction top is suppressed the rotor shaft top and is fixedlyed connected with gear.
The diameter of axle of above-mentioned rotor shaft top is provided with the axial end groove; Described friction top be provided with the axial end groove of rotor shaft suitable hold pawl; Described friction top is compressed on the axial end groove of rotor shaft top and with gear and fixedlys connected by holding pawl.
Above-mentioned axial end groove is straight groove or cross recess.
Above-mentioned friction top is provided with the friction top groove, and described gear is provided with the tapped hole corresponding with friction top groove position; Described friction top is fixedlyed connected with gear by screw.
Above-mentioned friction top groove is crescent shape friction top groove.
Above-mentioned crescent shape friction top groove is one or more, and the described tapped hole correspondence that is arranged on the gear also is one or more.
Above-mentioned friction top and gear also be provided with for interconnective pinhole; Described pinhole is one or more.
Above-mentioned Roots pump rotor location locking mechanism also comprises the collar for compacting friction top and gear.
Advantage of the present invention is:
The present invention as driving gear and power rotor, connects one of them gear and associated rotor by modes such as key or pins; Driven gear and driven rotor directly are not connected, but adopt a friction top to be connected by modes such as key, pin or straight groovees with driven rotor earlier, have crescent-shaped slot at friction top, be drilled with tapped hole on the driven gear, the crescent that passes friction top with screw is screwed on the driven gear, driven gear and friction top are linked together, because what adopt on the friction top is crescent but not screw hole, the angular position between driven gear and the friction top can be adjusted like this.Adjust the angular position of driven gear and friction top, guarantee main, after the driven gear correct engagement, tighten the screw that driven gear is connected with friction top, carry out jiggering then, if rotation is interfered then is readjusted, jigger rotor rotates normal, after not having interference or friction, again the driven gear that links together and friction top are pulled down together and joined the brill pinhole, and the pin of packing into, the position of driven gear and friction top is decided with regard to unique like this, also determines with the location that is connected of driven rotor as preceding friction top, driven gear was just determined with being connected also of driven rotor like this, thus the accurate location of having realized roots pump rotor and gear.Two collars install to respectively on the driving and driven rotor shaft, prevent that driving gear, driven gear and friction top from coming off.The present invention realized the accurate positioning and locking of Roots pump rotor and gear, and the reliability height has reduced the difficulty of processing of rotor, gear simultaneously, has overcome the deficiencies in the prior art.
Description of drawings
Fig. 1 is the plan view of Roots pump rotor location locking mechanism provided by the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of driven rotor of the present invention;
Fig. 4 is the structural representation of driven gear of the present invention;
Fig. 5 is the structural representation of friction top of the present invention;
Wherein:
The 1-pin; The 2-collar; The 3-screw; The 4-key; The 5-driven rotor; 51-axial end groove; 52-driven rotor axle; The 6-driven gear; The 61-center hole; The 62-tapped hole; 63-driven gear pinhole; The 7-friction top; 71-friction top groove; 72-friction top pinhole; 73-holds pawl; The 8-driving gear; The 9-power rotor.
Embodiment
The present invention is a kind of Roots pump rotor location locking mechanism, the rotor shaft that this Roots pump rotor location locking mechanism comprises gear, friction top 7 and is used for driving power rotor 9 and/or driven rotor 5 rotations; Gear set is on rotor shaft; Fixedly connected behind the friction top 7 compacting rotor shafts with after gear is joined brill pinhole and the locating stud of packing into.
Referring to Fig. 3, rotor shaft is one or more levels step axle; Gear set also only leans against on the step surface of step axle in rotor shaft; Friction top 7 is suppressed the rotor shaft tops and is fixedlyed connected with gear.The diameter of axle of rotor shaft top is provided with axial end groove 51; Friction top 7 be provided with the axial end groove 51 of rotor shaft suitable hold pawl 73; Friction top 7 is compressed on the axial end groove 51 of rotor shaft top and with gear and fixedlys connected by holding pawl 73.Axial end groove 51 is straight groove or cross recess; When axial end groove 51 was straight groove, this held pawl 73 and can be and suitable flat of straight groove.
Referring to Fig. 4 and Fig. 5, friction top 7 is provided with friction top groove 71, and gear is provided with the tapped hole 62 corresponding with friction top groove 71 positions; Friction top 7 is fixedlyed connected with gear by screw 3.Friction top groove 71 is crescent shape friction top grooves 71.Crescent shape friction top groove 71 is one or more, and tapped hole 62 correspondences that are arranged on the gear also are one or more; When crescent shape friction top groove 71 is a plurality of, a plurality of crescent shape friction top groove 71 uniform or non-uniform being arranged on the friction top 7.Friction top 7 and gear also be provided with for the pinhole that interconnects the location (driven gear pinhole and friction top pinhole 72); Pinhole is one or more; When pinhole is a plurality of, uniform or non-uniform being arranged on friction top 7 and the gear of a plurality of pinholes.Gear is provided with center hole 61, and gear is sleeved on the rotor by center hole 61.
Roots pump rotor location locking mechanism also comprises the collar 2 for compacting friction top 7 and gear.
Roots pump rotor location locking mechanism provided by the present invention can act on separately on the power rotor 9 of Roots pump, can act on separately on the driven rotor 5 of Roots pump, even can act on simultaneously on the power rotor 9 and driven rotor 5 of Roots pump.
To be elaborated in the mode of independent effect below, need to prove, effect simultaneously is consistent with the mode of effect separately:
Referring to Fig. 1 and Fig. 2, with one of them gear and associated rotor, as driving gear 8 and power rotor 9, connect by modes such as key 4 or pins; Driven gear 6 directly is not connected with driven rotor 5, but adopt a friction top 7 to pass through key 4 with driven rotor 5 earlier, mode such as pin or straight groove connects, have two (or a plurality of) crescent-shaped slots at friction top 7, be drilled with two (or a plurality of) tapped holes 62 on the driven gear 6, the crescent that passes friction top 7 with two (or a plurality of) screws 3 is screwed on the driven gear 6, driven gear 6 and friction top 7 are linked together, because what adopt on the friction top 7 is crescent but not screw 3 holes, the angular position between driven gear 6 and the friction top 7 can be adjusted like this.Driven rotor 5 is packed into behind the housing, the intermediate portion of three sections step axles is loaded onto bearing, there is the part of the straight groove driven gear 6 of packing into earlier on the top, make axially locating with step surface, refill friction top 7, in the straight groove on the flat insertion driven rotor of the in-line axle in friction top 7 holes, friction top 7 is just decided with the position of driven rotor 5 like this.At this moment, driven gear 6 can rotate on the driven rotor axle.When assembling, adjust the Roots pump master, the angular position of driven rotor 5, rotate driven gear 6 again, make and to see two complete on the driven gear 6 tapped holes 62 from the crescent of friction top 7, and driven gear 6 and driving gear 8 are meshed, pass the tapped hole 62 that is screwed into driven gear 6 with two screws 3 from the crescent of friction top 7 then, tighten the back jiggering, if rotation is interfered then is readjusted, jigger rotor rotates normal, after not having interference or friction, again the driven gear 6 that links together and friction top 7 are pulled down together to join and bored two (or several) pinholes, and two (or the several) pins 1 of packing into, driven gear 6 is decided with regard to unique with the position of friction top 7 like this, also determine with the location that is connected of driven rotor 5 that as preceding friction top 7 driven gear 6 was just determined with being connected also of driven rotor 5 like this, thus the accurate location of having realized roots pump rotor and gear.Two collars 2 install to respectively on the driving and driven rotor shaft, prevent that driving gear 8, driven gear 6 and friction top 7 from coming off.Adopt in the scheme and join the method for boring two (or several) pin 1 location and locking with screw 3, the reliability height, as long as guaranteed above-mentioned matching requirements when first dress, in the using process of pump gear can not take place and rotor generation angular displacement causes stuck phenomenon.
Claims (9)
1. a Roots pump rotor location locking mechanism is characterized in that: the rotor shaft that described Roots pump rotor location locking mechanism comprises gear, friction top and is used for driving power rotor and/or driven rotor rotation; Described gear set is on rotor shaft; Fixedly connected with gear behind the described friction top compacting rotor shaft.
2. Roots pump rotor location locking mechanism according to claim 1, it is characterized in that: described rotor shaft is one or more levels step axle; Described gear set also only leans against on the step surface of step axle in rotor shaft; Described friction top is suppressed the rotor shaft top and is fixedlyed connected with gear.
3. Roots pump rotor location locking mechanism according to claim 2, it is characterized in that: the diameter of axle of described rotor shaft top is provided with the axial end groove; Described friction top be provided with the axial end groove of rotor shaft suitable hold pawl; Described friction top is compressed on the axial end groove of rotor shaft top and with gear and fixedlys connected by holding pawl.
4. Roots pump rotor location locking mechanism according to claim 3, it is characterized in that: described axial end groove is straight groove or cross recess.
5. according to claim 1 or 2 or 3 or 4 described Roots pump rotor location locking mechanisms, it is characterized in that: described friction top is provided with the friction top groove, and described gear is provided with the tapped hole corresponding with friction top groove position; Described friction top is fixedlyed connected with gear by screw.
6. Roots pump rotor location locking mechanism according to claim 5, it is characterized in that: described friction top groove is crescent shape friction top groove.
7. Roots pump rotor location locking mechanism according to claim 6, it is characterized in that: described crescent shape friction top groove is one or more, the described tapped hole correspondence that is arranged on the gear also is one or more.
8. Roots pump rotor location locking mechanism according to claim 7 is characterized in that: described friction top and gear also be provided with for interconnective pinhole; Described pinhole is one or more.
9. Roots pump rotor location locking mechanism according to claim 8 is characterized in that: described Roots pump rotor location locking mechanism also comprises for compacting friction top and gear and the collar of fixedlying connected with friction top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153101.8A CN103244427B (en) | 2013-04-27 | 2013-04-27 | Roots pump rotor fixed position locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153101.8A CN103244427B (en) | 2013-04-27 | 2013-04-27 | Roots pump rotor fixed position locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244427A true CN103244427A (en) | 2013-08-14 |
| CN103244427B CN103244427B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310153101.8A Expired - Fee Related CN103244427B (en) | 2013-04-27 | 2013-04-27 | Roots pump rotor fixed position locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103244427B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916047A (en) * | 2018-09-14 | 2018-11-30 | 安徽达来电机有限公司 | A kind of two impeller shafts and associated gear of Anti-dislocation |
| CN109026686A (en) * | 2018-09-14 | 2018-12-18 | 安徽达来电机有限公司 | A kind of roots blower and installation method of quick positioning trilobed wheel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB421442A (en) * | 1934-05-05 | 1934-12-20 | Gen Motors Corp | Improvements relating to rotary blowers |
-
2013
- 2013-04-27 CN CN201310153101.8A patent/CN103244427B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916047A (en) * | 2018-09-14 | 2018-11-30 | 安徽达来电机有限公司 | A kind of two impeller shafts and associated gear of Anti-dislocation |
| CN109026686A (en) * | 2018-09-14 | 2018-12-18 | 安徽达来电机有限公司 | A kind of roots blower and installation method of quick positioning trilobed wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103244427B (en) | 2016-04-20 |
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Granted publication date: 20160420 Termination date: 20180427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |