CN202812007U

CN202812007U - Single-screw gear box

Info

Publication number: CN202812007U
Application number: CN 201220403166
Authority: CN
Inventors: 承向阳; 张超; 胡月新
Original assignee: Changzhou Changlang Gearbox Co Ltd
Current assignee: Changzhou Changlang Gearbox Co Ltd
Priority date: 2012-08-15
Filing date: 2012-08-15
Publication date: 2013-03-20
Anticipated expiration: 2022-08-15

Abstract

The utility model relates to a single-screw gear box which comprises a shell body, an input shaft, a middle shaft, a transition shaft provided with transition teeth and an output shaft provided with output teeth. An input gear is arranged on the input shaft and connected with middle teeth arranged on the middle shaft in a meshed mode, and the transition teeth and the output teeth are in meshed connection. Two ends of the input shaft and the output shaft are provided with double oil seals, the sealing performance of a whole device is guaranteed, and possibility of oil oozing is reduced.

Description

A kind of single screw gear case

Technical field

The utility model relates to a kind of gear drive, particularly a kind of single screw gear case.

Background technique

Present domestic single-screw extruder gearbox major part still adopts the beginning of the eighties from the design production technology of external introduction, because the conditions of manufacture of Mechanical Industry of China limited at that time, single-screw extruder gearbox Shortcomings and defective, the housing bearing capacity is not high, and the easy oil impregnate of axial plane is simultaneously because the restriction of Gearmaking Technology and material, the single-screw extruder gearbox major part exists design of gears aging, waste of material, noise is large, the not high defective of bearing capacity.

The model utility content

The purpose of this utility model is to provide a kind of oil-tight, noise is low, bearing capacity is high a kind of single screw gear case.

The technological scheme that realizes the utility model purpose is: a kind of single screw gear case, has housing, input shaft, jack shaft, have the transition axis that the transition tooth is arranged and the output shaft that output gear is arranged, input shaft is provided with input gear, and input gear is connected with a joggle with the center tooth that is located on the jack shaft, and transition tooth and output gear are connected with a joggle.

Further, the dual-oil seal of a kind of input shaft of single screw gear case and output shaft two ends setting is labyrinth oil seal.

The utlity model has following characteristics: input shaft of the present utility model and output shaft two ends are provided with dual-oil seal, thereby have guaranteed the sealability of whole device, have reduced the possibility of oil impregnate.

Description of drawings

For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein

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

Reference character: 1, housing, 2, input gear, 3, center tooth, 6, the transition tooth, 7, output gear,

8, dual-oil seal 11, input shaft, 12 jack shafts, 13, transition axis, 14, output shaft.

Embodiment

As shown in Figure 1, the utlity model has housing 1, input shaft 11, jack shaft 12 has the transition axis 13 of transition tooth 6 and has the output shaft 14 of output gear 7; It is characterized in that: described input shaft 11 is provided with input gear 2, and described input gear 2 is connected with a joggle with the center tooth 3 that is located on the described jack shaft 12, and described transition tooth 6 is connected with a joggle with output gear 7; Input shaft 11 is labyrinth oil seal with the dual-oil seal 8 that output shaft 14 two ends arrange; Each transmission shaft adopts superior alloy steel 42CrMo, modified heat treatment fine finishing forms, and has high-fatigue strength, impact resistance and good impact toughness, and transmission shaft adopts the link of standard rectangular spline, and adopt the datum hole location, guaranteed screw connection smooth running at work; Gear on each transmission shaft all adopts superior alloy steel 20CrNi2MoA, and the double tempering carburizing quenching process is adopted in heat treatment, has higher impact resistance and toughness; Adopt simultaneously advanced gear-grinding process, all gears all adopt German forming die processing, and the accuracy of gear reaches DIN 3960-67 6 class precisions; And consider that bending deflection and torsional deflection on the impact of gear engagement, improve transmission efficiency, and reducing noise, simultaneously gear parameter optimization strengthens the bearing capacity that modulus and the facewidth have improved gear.

Above-described specific embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. a single screw gear case has housing (1), input shaft (11), and jack shaft (12) has the transition axis (13) of transition tooth (6) and has the output shaft (14) of output gear (7); It is characterized in that: described input shaft (11) is provided with input gear (2), and described input gear (2) is connected with a joggle with the center tooth (3) that is located on the described jack shaft (12), and described transition tooth (6) is connected with a joggle with output gear (7).

2. a kind of single screw gear case according to claim 1 is characterized in that: described input shaft (11) is labyrinth oil seal with the dual-oil seal (8) that output shaft (14) two ends arrange.