CN201521602U

CN201521602U - High speed ratio four-stage parallel shaft hard gear surface gear speed reducer

Info

Publication number: CN201521602U
Application number: CN2009200486692U
Authority: CN
Inventors: 丁国其; 吕玉惠; 蔡军
Original assignee: JIANGSU TAIXINGLONG REDUCER CO Ltd
Current assignee: JIANGSU TAIXINGLONG REDUCER CO Ltd
Priority date: 2009-10-27
Filing date: 2009-10-27
Publication date: 2010-07-07
Anticipated expiration: 2019-10-27

Abstract

The utility model relates to a high speed ratio four-stage parallel shaft hard gear surface gear speed reducer; a box body is internally provided with an input pinion shaft, an intermediate I shaft, an intermediate II shaft, an output gear shaft and an output shaft in parallel in sequence by a supporting bearing, and all parallel shafts are respectively connected with the input pinion shaft, the intermediate I shaft, the intermediate II shaft and an output gear by keys; all gears are meshed with each other; the axial lines of the input pinion shaft, the intermediate I shaft, the intermediate II shaft are distributed in a triangle or Z shape in the space; and the axial lines of the input pinion shaft, the intermediate II shaft, the output gear shaft and the output shaft are arranged on the same horizontal line. The gear speed reducer adopts a plurality of parallel shafts to be installed in the same plane inside the box body in parallel, and the parallel shafts are matched with the triangular or Z-shaped layout of local parallel transmission shafts, so that the box body has compact and stable internal structure, strong carrying capacity, high transmission speed ratio and high-power speed ratio transmission, and the gear speed reducer is applicable to the transmission occasions such as hoisting, transportation, metallurgy and the like which require low speed and high torque.

Description

Large speed ratio level Four parallel axis hard-tooth surface gear reduction unit

Technical field

The utility model relates to a kind of speed reducer, a kind of specifically large speed ratio level Four parallel axis hard-tooth surface gear reduction unit.

Background technique

The gear reduction unit that tradition is used fixedly the time, be realized bigger reduction speed ratio in the output torque, and the casing volume must increase, and promptly the speed reducer volume increases, give produce, manufacturing brings a lot of inconvenience.Available technology adopting triangle or be the transmission shaft layout of zigzag structure, as the patent No. is three grades of transmission cylindric spiral gears of 200520025927.7 disclosed a kind of parallel axes speed reducer, its structure is comparatively compact, but speed reducer attaches motor, limit the volume of its subsidiary motor because of speed reducer volume size, weight, thereby cause power of motor less than normal, the speed reducer bearing capacity is limited, speed ratio is little, can't realize high-power large speed ratio transmission, and the inner transmission shaft of installing of speed reducer does not have stable support, and speed reducer running vibration and noise are big, temperature rise is increased, and causes its working life shorter.

In addition, as the patent No. is 200820075766.6 disclosed a kind of high-power two-stage parallel axis hard-tooth surface gear reduction units, adopt two-stage parallel axis to be supported on transmission on the casing, two-stage parallel axis is installed on the same plane, mounting structure is stable, running vibration and noise are little, temperature rise is low, but its transmission speed ratio is little, as increasing transmission speed ratio, then need add the parallel axes number is arranged in order and is supported on the casing, it is big to take up room, and causes the casing volume to increase, and produces difficulty, manufacture cost improves, and is not easy to transportation, installs.

Summary of the invention

In order to solve the transmission shaft layout that prior art middle gear speed reducer adopts triangle or is the zigzag structure, bearing capacity is low, reduction speed ratio is little, can't realize high-power speed ratio transmission, or gear reduction unit adopts two-stage parallel axis to be installed on the same plane of casing, structure is not compact, it is big to take up room, the casing volume is big, produce difficulty, the manufacture cost height, be not easy to transportation, deficiencies such as installation, the purpose of this utility model provides a kind of compact structure, it is little to take up room, the bearing capacity height, reduction speed ratio is big, convenient for production, low cost of manufacture, be convenient to transportation, the large speed ratio level Four parallel axis hard-tooth surface gear reduction unit of installing.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of large speed ratio level Four parallel axis hard-tooth surface gear reduction unit, mainly comprise casing, the input pinion shaft, output shaft and spring bearing, the input pinion shaft, output shaft is in spring bearing is installed on casing, its technical characterstic is through the parallel successively input pinion shaft that is equipped with of spring bearing in the described casing, middle I axle, middle II axle, output gear shaft and output shaft, middle I axle, middle II axle, be connected the input small gear by key respectively on output gear shaft and the output shaft, middle I gear, middle II gear, output gear, described input small gear and middle I gear engagement, middle I gear and middle II gear engagement, middle II axle and output gear engagement, described input pinion shaft, middle I axle, the axis of middle II axle triangular in shape or Z type in the space is arranged described input pinion shaft, middle II axle, output gear shaft, the axis of output shaft is on same horizontal line.

Further, the output terminal of the input end of described input pinion shaft, output shaft is provided with oil sealing.

Again further, described input pinion shaft two ends are equipped with the spacer that is used to adjust axial position.

Compared with prior art, the beneficial effects of the utility model are: adopt the level Four driving of parallel axes, reduce the single-stage speed ratio, can draw back speed reducer integral central distance, reduce the speed reducer whole height, many parallel being installed on the interior same plane of casing of parallel axes, parallel axes is installed stable, the bearing capacity height, the running vibration is little, noise is low, temperature rise is little, long service life; Local triangle or the Z-shaped parallel drive shaft layout of adopting can improve the complete machine transmission speed ratio, reduces the speed reducer entire length, and it is little to take up room, and helps producing, transports, installs.

The utility model adopts many parallel being installed on the interior same plane of casing of parallel axes, the triangle or the Z-shaped layout that cooperate local parallel drive shaft, compact structure, stable, bearing capacity is strong, transmission speed ratio is big, can transmit high-power speed ratio, be applicable to that lifting, transportation, metallurgy etc. require the occasion of low speed high torque transmission.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A internal view of Fig. 1.

Among the figure: casing 1, liquid level meter 2, case lid 3, big saturating lid 4, little side's lid 5, middle stifle 6, little lid 7, hanger 8, oil drain plug 9, input pinion shaft 10, spacer sleeve 11, bearing 12, input small gear 13, spacer 14, middle I axle 15, middle I gear 16, middle II axle 17, middle II gear 18, output gear shaft 19, key 20, output shaft 21, output gear 22, oil sealing 23.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Shown in Fig. 1,2, large speed ratio level Four parallel axis hard-tooth surface gear reduction unit comprises casing 1, case lid 3, input pinion shaft 10, input small gear 13, middle I axle 15, middle I gear 16, middle II axle 17, middle II gear 18, output gear shaft 19, output shaft 21, output gear 22.Input pinion shaft 10 is packaged in the casing 1 through little lid 7, output gear shaft 19, middle I axle 15, middle II axle 16 respectively through in stifle 6 be packaged in the casing 1, output shaft 21 is packaged in the casing through big saturating lid 4; The input pinion shaft, middle I axle, middle II axle, the two ends of output gear shaft and output shaft are successively through spacer sleeve 11, bearing 12 supports, and input pinion shaft, middle I axle, middle II axle, the two ends of output gear shaft and output shaft are equipped with the spacer 14 that is used to adjust axial position, the engagement of input pinion shaft 10 is fixed on input gear 13 on the intermediate gear I axle 15 by key connecting, intermediate gear I axle 15 engagement is fixed on middle I gear 16 on the intermediate gear II axle 17 by key connecting, intermediate gear II axle 17 engagement is by be connected and fixed middle II gear 18 on output gear shaft 19 of key 20, output gear shaft 19 engagement is fixed on output gear 22 on the output shaft 21 by key connecting, and input pinion shaft 10 and output shaft 21 all are equipped with oil sealing 23.Above casing 1, the casing left side is provided with oil drain plug 9 and liquid level meter 2 to case lid 3 by bolton, and casing top is provided with a plurality of little side's lids 5.Gear shaft and gear adopt 20CrMnMo, and main shaft adopts 42CrMo, and casing adopts the steel plate welding, provide reliable assurance for increasing bearing capacity.This speed reducer compact structure rationally utilizes limited space, and the volume of speed reducer is reduced, and improves user's space availability ratio, satisfies user's various setting types, and polytype mounting type is arranged.

Claims

1. large speed ratio level Four parallel axis hard-tooth surface gear reduction unit, mainly comprise casing (1), input pinion shaft (10), output shaft (21) and spring bearing (12), it is characterized in that: import pinion shaft (10) through parallel successively being equipped with of spring bearing (12) in the described casing (1), middle I axle (15), middle II axle (17), output gear shaft (19) and output shaft (21), middle I axle, middle II axle, output gear shaft is connected input small gear (13) by key (20) respectively with output shaft, middle I gear (16), middle II gear (18), output gear (22), described input small gear and middle I gear engagement, middle I gear and middle II gear engagement, middle II axle and output gear engagement, described input pinion shaft, middle I axle, axis triangular in shape arranging in the space of middle II axle, described input pinion shaft, middle II axle, output gear shaft, the axis of output shaft is on same horizontal line.

2. large speed ratio level Four parallel axis hard-tooth surface gear reduction unit according to claim 1 is characterized in that: the output terminal of the input end of described input pinion shaft (10), output shaft (21) is provided with oil sealing (23).

3. large speed ratio level Four parallel axis hard-tooth surface gear reduction unit according to claim 1 is characterized in that: described input pinion shaft (10) two ends are equipped with the spacer (14) that is used to adjust axial position.