CN102312953A

CN102312953A - Closed planet reducer of earth pressure balance shield machine

Info

Publication number: CN102312953A
Application number: CN201110062184A
Authority: CN
Inventors: 吴声震
Original assignee: 吴小杰
Priority date: 2011-03-01
Filing date: 2011-03-01
Publication date: 2012-01-11

Abstract

The invention relates to the technical field of planet deceleration, in particular to a closed planet reducer of an earth pressure balance shield machine. The closed planet reducer is characterized in that: (A) in a high-speed-level NGW planet transmission member (A), a planet carrier is connected with a second sun gear shaft; and (B), in a closed planet, a differential planet carrier is connected with a quasi sun gear and hollowly sleeved outside the differential second sun gear shaft, an inner hole of the quasi planet carrier and the outer circle of a flange in a casing are closely matched and connected into a whole, the output end of an inner gear cylinder is connected with an output shaft, the other end of the inner gear cylinder is connected with a flange cylinder, and the inner hole of the flange cylinder are supported on the outer circle of the quasi planet carrier through two bearings. A Cheshi seal ring is arranged between the outer circle of the cylinder and the inner hole of the casing, and short service life of the traditional shield machine reducer is mainly resulted from sealing failure. The invention has the beneficial effects that: (1) the bearing capacity is improved by 50-60 percent; (2) the axial length is shorted by 25-35 percent, and the weight is lighted by 20-30 percent; (3) sealing reliability and long service life are achieved; and (4) two inner gear rings have equal tooth number and modulus and are conveniently disassembled and assembled.

Description

Balancing earth-pressure shielding machine closed planetary retarder

Technical field

The present invention relates to the planetary reduction gear technical field, a kind of balancing earth-pressure shielding machine closed planetary retarder.

Background technique

In letter heavy industry Mechanology Inc., Luoyang mining machinery design and research institute " high power third-level planetary reduction gear that is used for balancing earth-pressure shielding machine " the 200810231114.1st, 3 years 863 Program projects of national 2007-2010.This project is most advanced tunnel construction machinery-balancing earth-pressure shielding machine core component on the our times, and only virtuous abroad, day etc. has manufacturing capacity, costs an arm and a leg.

This inventive concept and 1. Cheng Daxian " mechanical design handbook " volume 3. Figure 14-5-31; 2. " Gear Transmission Design handbook Fig. 7-23 is recorded in Zhu's filial piety; 3. 95243413.X " suspends and all carries plane table thermoconductivity meter "; 4. open exhibition " planetary differential transmission device " Fig. 8-4; 5. richly shake that Figure 10-9 is similar for steel " Planetary Transmission Design ", thereby do not see novelty, the creativeness of inventive concept.

Transmission efficiency>=97% is claimed in this invention, but " 1030 pages of handbook are established in gear transmission, " mechanical transmission is selected 393 pages of handbook for use by Zhu Xiaolu; Open exhibition " planetary differential transmission device " 310 pages of single-stages (NAD) η=0.98, draw this design total efficiency and should be: η=0.98 ³=0.941.According to reports, retarder (150kW, profile φ 570 * 1000) is organized examination through national 863 expert.

Summary of the invention the object of the invention provides the short 25-35% balancing earth-pressure shielding machine of a kind of axial dimension closed planetary retarder.

Technological scheme (A) level at a high speed comprises first sun wheel shaft, first planet carrier, first planet wheel, first planet wheel shaft and first ring gear, casing and end cap; First ring gear is connected in casing input end endoporus; The first planet carrier output shaft is bearing in the endoporus of casing inward flange with two bearings, and the described first planet carrier output shaft axle head internal spline connects the second sun wheel shaft external splines;

(B) closed planetary is made up of differential component and quasi-planet parts, and wherein: differential component comprises second sun wheel shaft, second planet carrier, second planet wheel, second planet wheel shaft and ring gear A; The quasi-planet parts comprise accurate sun gear, quasi-planet frame, there won't be any problem star-wheel, quasi-planet wheel shaft and ring gear B; Second planet carrier connects the one sky and is enclosed within outside second sun wheel shaft with accurate sun gear; Quasi-planet frame endoporus connects one with the cylindrical close-fitting of casing inward flange; Internal tooth tube output terminal connects output shaft, the other end connecting flange tube, and flange tube endoporus is bearing on the cylindrical of quasi-planet frame with two bearings.Ring gear A equates that with the ring gear B number of teeth z modulus m equates.Be that Che Shi dust ring and rotating seal ring are to improve sealability between cylinder cylindrical and the casing endoporus.

Beneficial effect: according to patent of invention 200810231114.1, its creativeness is: n is counted in (1) there won't be any problem star-wheel _p=6, carry 76% moment of torsion, be equivalent to eight shuntings, thereby bearing capacity is than the high 50-60% of four shuntings; (2) axially short 25-35%, light 20-30%; (3) reliable, the long service life of Che Shi seal ring sealing; (4) two ring gear number of teeth z, modulus m equate, thereby easy accessibility.

Description of drawings Fig. 1, embodiment of the invention structural representation

Embodiment encyclopaedizes the present invention below in conjunction with accompanying drawing:

With reference to Fig. 1. a kind of balancing earth-pressure shielding machine closed planetary retarder, to form by high speed level NGW Gear Planet Transmission part and slow speed turbine stage closed planetary driving component, closed planetary comprises differential and quasi-planet two parts, it is characterized in that:

(A) level NGW Gear Planet Transmission part comprises first sun wheel shaft (19), first planet carrier (2), first planet wheel (17), first planet wheel shaft (16) and first ring gear (1), casing (3) and end cap (18) at a high speed; Described first ring gear (1) is connected in casing (3) input end endoporus; Described first planet carrier (2) output shaft is bearing in the endoporus of casing (3) inward flange with two bearings, and described first planet carrier (2) output shaft axle head internal spline connects second sun wheel shaft (9) external splines;

(B) differential component in the closed planetary driving component comprises ring gear A in second sun wheel shaft (9), second planet carrier (12), second planet wheel (11), second planet wheel shaft (10) and the internal tooth tube (7); The quasi-planet parts comprise accurate sun gear (13), quasi-planet frame (6), ring gear B in star-wheel (14), quasi-planet wheel shaft (15) and the internal tooth tube (7) there won't be any problem; Said ring gear A and ring gear B are obtained by internal tooth tube (7) processing; Said second planet carrier (12) connects the one sky and is enclosed within outside second sun wheel shaft (9) with accurate sun gear (13); Said quasi-planet frame (6) endoporus connects one with casing (3) inward flange cylindrical close-fitting; Said internal tooth tube (7) output terminal connects output shaft (8), the other end connecting flange tube (20), and described flange tube (20) endoporus is bearing on quasi-planet frame (6) cylindrical with two bearings (5); Said flange tube (20) cylindrical and casing (3) endoporus have two seal rings (4), are further characterized in that: seal ring (4) is Che Shi CZF-I type combination dust ring and Che Shi TB3 rotating seal ring.

The TB3 sealing is made up of thin lips and teeth shape slip ring+O type circle, and the slip ring crown is bordering on the line contact with contacting of surface of revolution and reduces high speed rotary grinding heat.The thin lip rigidity of slip ring is little, and O type circle is tightened in slip surface the thin lip of slip ring, the thick 0.001-0.0025 of slip surface oil film, and unlikely being scraped becomes to drip (leakage); O type circle elastic force compensates the line contact sealing surface wear automatically; The CZF dust ring is made into the rectangular cross-section, is had the tight overlap joint of driving fit mouthful by low friction, high abrasion, high-strength polymer, relies on the outer O type circle of ring to compensate automatically, is adjacent to dustproof surperficial and do not have a gap.The seal ring service condition is: 0-40Mpa ,-55-250 ℃, 6m/s.

Existing shield machine retarder short main cause in working life is seal failure, and Che Shi sealing life is tens times of conventional oil inside front covers.The Che Shi sealing sees Yu Chengda " mechanical design handbook " volume 3.10-300 page or leaf earlier for details.

Said balancing earth-pressure shielding machine closed planetary retarder is characterized in that: ring gear A equates with ring gear B number of teeth z in the internal tooth tube (7), and modulus m equates, thereby the process for machining performance is good, easy accessibility.

Planet wheel is (17) three in the differential component, carries 24% moment of torsion, and there won't be any problem star-wheel is (14) 6, carries 76% moment of torsion, is equivalent to eight shuntings, thereby bearing capacity is than the high 50-60% of background technique 200810231114.1 4 shuntings.Result of calculation such as following table:

(moral) Wei Erte NFM shield machine decelerator parameter: theoretical maximum moment of torsion=7340kNm, the moment of torsion=9550kNm that gets rid of poverty, (1.30 times), separate unit decelerator: power=150kW, the theoretical maximum moment of torsion=154200Nm. moment of torsion=1.30 * 154200Nm that gets rid of poverty.

Claims

1. a balancing earth-pressure shielding machine closed planetary retarder is made up of high speed level NGW Gear Planet Transmission part and slow speed turbine stage closed planetary driving component, and closed planetary comprises differential and quasi-planet two parts, it is characterized in that:

(B) differential component in the closed planetary driving component comprises ring gear A in second sun wheel shaft (9), second planet carrier (12), second planet wheel (11), second planet wheel shaft (10) and the internal tooth tube (7); Closed planetary quasi-planet parts comprise accurate sun gear (13), quasi-planet frame (6), ring gear B in star-wheel (14), quasi-planet wheel shaft (15) and the internal tooth tube (7) there won't be any problem; Said ring gear A and ring gear B are obtained by internal tooth tube (7) processing; Described second planet carrier (12) connects the one sky and is enclosed within outside second sun wheel shaft (9) with accurate sun gear (13); Described quasi-planet frame (6) endoporus connects one with the cylindrical close-fitting of casing (3) inward flange; Described internal tooth tube (7) output terminal connects output shaft (8); The other end connecting flange tube (20), described flange tube (20) endoporus is bearing on the cylindrical of quasi-planet frame (6) with two bearings (5), and described flange tube (20) cylindrical and casing (3) endoporus have two seal rings (4).

2. according to right 1 described balancing earth-pressure shielding machine closed planetary retarder, it is characterized in that: flange tube (20) cylindrical and casing (3) two seal rings of endoporus (4) are Che Shi CZF-I type combination dust ring and Che Shi TB3 rotating seal ring.

3. according to right 1 or 2 said balancing earth-pressure shielding machine closed planetary retarders, it is characterized in that: ring gear A equates with ring gear B number of teeth z in the internal tooth tube (7), and modulus m equates.