CN2434478Y

CN2434478Y - Conic gear-worm drive differential mechanism

Info

Publication number: CN2434478Y
Application number: CN 00242824
Authority: CN
Inventors: 戴天尾; 王立民
Original assignee: Haixiong Electromechanical Tech Co Ltd Tianjin
Current assignee: Haixiong Electromechanical Tech Co Ltd Tianjin
Priority date: 2000-07-16
Filing date: 2000-07-16
Publication date: 2001-06-13
Anticipated expiration: 2010-07-16

Abstract

The utility model relates to a conic gear worm drive differential mechanism which is characterized in that an input shaft and an output shaft are arranged in a casing body, the center part of which is provided with a lug boss through a bearing frame, a worm gear and a center wheel are arranged in the casing body, a supporting seat of a worm and an upper cover of a worm are arranged on a left casing body, and the supporting seat of the worm supports the worm through a bearing liner; a planet frame is connected with the worm gear through a small shaft of a planet wheel, a planet wheel shaft is arranged on the planet frame, and the planet wheel is arranged on the planet frame through the bearing frame; a breather is arranged above a right casing body, the breather is provided with a vent hole, and an oil discharge hole is arranged below the breather, an oil plug is arranged below the oil discharge hole, a sealed ring is arranged between the oil plug and the oil discharge hole, and an oil mark is arranged on one side of the right casing body. The utility model has the advantages of low cost, simple structure, reliable operation and long service life.

Description

Cone gear-worm drive differential mechanism

The utility model belongs to the differential mechanism of using on a kind of production line, and particularly a kind of production of paper products line that is used for carries out cone gear-worm drive differential mechanism that phase adjusted is used for keeping certain speed of production or rhythm.

At present, this type of differential mechanism that adopts on the production of paper products line of Japanese import is that a kind of 2K-H Gear Planet Transmission and common primary cylinder gear gearing down that is made of general cone gear combines.Its cylindrical gears gearing down is usefulness just when phase adjusted only, as control phase not then this part should maintain static.The major defect of this differential mechanism is that the column gear transmission part is not owing to there is self-lock ability, thereby, when proper functioning (when not carrying out phase adjusted), for preventing that the cylindrical gears part is along with cone gear rotates together, must adopt the motor of band self-locking to drive cylindrical gears, the motion input during as its control phase.Otherwise as just must partly install self-locking device additional at cylindrical gears without the self-locking motor.But no matter which kind of method of employing all can make cost increase complex structure.Its another shortcoming is to improve or continuous operation time when longer in speed of production, and the differential mechanism heating is big, makes its lost of life.

The purpose of this utility model is to overcome deficiency of the prior art and provides a kind of simple in structure, and cost is low, reliable operation, the cone gear of long service life-worm drive differential mechanism.

Technical solution of the present utility model is as follows:

The structure of cone gear-worm drive differential mechanism is, the left shell (1) and the right shell body (2) of central part bit strip boss connect firmly together by screw (3), a left side, pass through bearing (4) in the right shell body respectively, (5) and (6) frame adorning input shaft (7) and output shaft (8), on input shaft and output shaft, adorning circular cone tooth central gear (9) and (10) respectively, two central gears use key (11) to link to each other with output shaft with input shaft with (12) respectively, and with little round nut (13), (14) and lock washer (15), (16) respectively central gear is fixed on input shaft and the output shaft, on input shaft and output shaft, also is being set with seal ring (17) and (18); Upper end at left shell (1) is installing aiding support (20) by screw (19), aiding support and left shell upper support worm bearing (21), adorning worm screw loam cake (22) on the worm bearing, worm bearing (21) and worm screw loam cake (22) are fixed on the left shell (1) by screw (23); On worm bearing, adorning worm screw (25), adorning the worm gear (26) that is meshed with worm screw (25) in the housing by two bearing shells (24) frame; One end of 2 little axles of planet wheel (27) inserts respectively in the hole of worm gear (26), and the other end is fixed on the planet carrier (30) by back-up ring (28) and screw (29) respectively.On planet carrier (30), adorning planet wheel shaft (31) and (32), and be fixed together itself and planet carrier are auxiliary with screw (33).Adorning planet wheel (38) and (39) by two pairs of bearings (34), (35) and (36), (37) frame respectively on planet wheel shaft (31) and (32), and be fixed on the planet wheel shaft with nut (40), (41) and lock washer (42), (43), be set with spacer ring (44) and (45) between every pair of bearing; Adorning breather (46) above right shell body, having vent (47) on the breather, the below has drain oil (48), and plug cock (49) is being adorned in the drain oil below, is adorning seal ring (50) between plug cock and the drain oil; Adorning oil ga(u)ge (51) in a side of right shell body.

Bevel Gear Drive to touch number be 2.5～3.5mm, it is worm geared that to touch number be 2～3.15mm.

The utility model compared with prior art has following advantage:

1, because the utility model has adopted one-level worm and worm gear gearing down to replace original primary cylinder gear gearing down, and worm drive itself has self-locking property, so can overcome the major defect of prior art fully, the motion input of the motor that can adopt common micromachine to replace to be with self-locking worm screw during as phase adjusted, so both reduced cost, also simplified the structure.

2, because the utility model has adopted breather, the hot air that produces when turning round in the housing is freely discharged by vent, the pressure in the housing just can not increase like this, and the oil sump temperature also can reduce, and can prolong the working life of differential mechanism.

3,, and is furnished with tension device simultaneously because the input end of differential mechanism generally all adopts band or chain-driven synchronously.So left shell spy of the present utility model is designed to the round boss that core outwards protrudes, so just can this projection section install be used to or the tension arms used of chain-driven tensioning, thereby can do the tension arms bearing in addition and be installed in body first-class, complete machine structure is simplified more.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural representation of the utility model cone gear-worm drive differential mechanism, also is the sectional view of Fig. 2 A-A, B-B;

Fig. 2 is the right elevation of the utility model cone gear-worm drive differential mechanism;

Fig. 3 is that the C of Fig. 2 is to view.

Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:

Structure such as Fig. 1 of cone gear-worm drive differential mechanism, Fig. 2, shown in Figure 3, the left shell (1) and the right shell body (2) of central part bit strip boss connect firmly together by 5 hexagon socket cap head screws (3), a left side, pass through bearing (4) in the right shell body respectively, (5) and (6) frame adorning input shaft (7) and output shaft (8), on input shaft and output shaft, adorning circular cone tooth central gear (9) and (10) respectively, two central gears use key (11) to link to each other with output shaft with input shaft with (12) respectively, and with little round nut (13), (14) and lock washer (15), (16) respectively central gear is fixed on input shaft and the output shaft, on input shaft and output shaft, also is being set with seal ring (17) and (18); Upper end at left shell (1) is installing aiding support (20) by 2 sunk screws (19), aiding support and left shell upper support worm bearing (21), adorning worm screw loam cake (22) on the worm bearing, worm bearing (21) and worm screw loam cake (22) are fixed on the left shell (1) by 4 screws (23); On worm bearing, adorning worm screw (25), adorning the worm gear (26) that is meshed with worm screw (25) in the housing by left and right sides bearing shell (24) frame; One end of 2 little axles of planet wheel (27) inserts respectively in the hole of worm gear (26), and the other end is fixed on the planet carrier (30) by back-up ring (28) and hex head screw (29) respectively.On planet carrier (30), adorning planet wheel shaft (31) and (32), and be fixed together itself and planet carrier are auxiliary with screw (33).Adorning planet wheel (38) and (39) by bearing (34), (35) and (36), (37) frame of two band stop rings respectively on planet wheel shaft (31) and (32), and be fixed on the planet wheel shaft with little round nut (40), (41) and lock washer (42) and (43), be set with spacer ring (44) and (45) between every pair of bearing; Adorning breather (46) above right shell body, having vent (47) on the breather, the below has drain oil (48), and plug cock (49) is being adorned in the drain oil below, is adorning seal ring (50) between plug cock and the drain oil; Adorning oil ga(u)ge (51) in a side of right shell body.

The number of touching of Bevel Gear Drive is 3mm, and the worm geared number of touching is 2.5mm.

During use, the input shaft of differential mechanism (7) links to each other with the transmission system of machine respectively with output shaft (8), during proper functioning, motion and power drive input shaft (7) by band or chain-driven, and the central gear on it (9) drives planet wheel (38) and (39), drive output shaft (8) through central gear (10) again, will move and power output.Worm screw (25), worm gear (26) and planet carrier (30) all do not rotate at this moment.Because each central gear all equates with the number of teeth of planet wheel, so during proper functioning, output shaft equates and switched in opposite with input shaft rotational speed.When needs carry out phase adjusted (in order to change the initial position of motion output point), then drive worm screw (25) and drive worm gear (26) rotation, and drive planet carrier (30) rotation through the little axle of planet carrier (27) by the micromachine (not drawing among the figure) that is contained in the differential mechanism top.Like this, the motion of this differential mechanism is promptly simultaneously by input shaft (7) and the input of worm screw (25) both sides, in differential mechanism with two input motions synthetic after, again by output shaft (8) output, supply it to carry out the phase adjusted of motion starting point.After phase place is adjusted, close the motor that drives worm screw, worm screw, worm gear, planet carrier do not change, and then this differential mechanism is got back to former normal working again.

Claims

1, a kind of cone gear-worm drive differential mechanism, its structure is, left shell (1) and right shell body (2) connect firmly together by screw (3), a left side, pass through bearing (4) in the right shell body respectively, (5) and (6) frame adorning input shaft (7) and output shaft (8), on input shaft (7) and output shaft (8), adorning circular cone tooth central gear (9) and (10) respectively, two central gears use key (11) to link to each other with output shaft with input shaft with (12) respectively, and with nut (13), (14) and lock washer (15), (16) two central gears are fixed on input shaft (7) and the output shaft (8) respectively, on input shaft and output shaft, also be set with seal ring (17) and (18), adorning planet carrier (30) in the housing, adorning planet wheel shaft (31) and (32) on the planet carrier, pass through bearing (34) on the planet wheel shaft respectively, (35) and (36), (37) frame is being adorned planet wheel (38) and (39), and with nut (40), (41) and lock washer (42) and (43) be fixed on the planet wheel shaft, be set with spacer ring (44) and (45) between every pair of bearing, adorning oil ga(u)ge (51) in a side of right shell body, it is characterized in that: the center portion of left shell (1) and right shell body (2) has boss, installing aiding support (20) in the upper end of left shell (1), installing worm bearing (21) on aiding support and the left shell, adorning worm screw loam cake (22) on the worm bearing, adorning worm screw (25) by two bearing shells (24) frame on the worm bearing, adorning the worm gear (26) that is meshed with worm screw in the housing, planet carrier (30) is connected with worm gear (26) by the little axle of planet wheel (27), planet wheel shaft (31) and (32) are fixed together itself and planet carrier (30) are auxiliary with screw (33), above right shell body, adorning breather (46), have vent (47) on the breather, the below has drain oil (48), plug cock (49) is being adorned in the drain oil below, is adorning seal ring (50) between plug cock and the drain oil.

2, according to the said cone gear of claim 1-worm drive differential mechanism, it is characterized in that: Bevel Gear Drive to touch number be 2.5～3.5mm, it is worm geared that to touch number be 2～3.15mm.