CN201827316U

CN201827316U - Planar cam speed reducer

Info

Publication number: CN201827316U
Application number: CN2010201149063U
Authority: CN
Inventors: 王能员
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-15
Filing date: 2010-01-22
Publication date: 2011-05-11
Anticipated expiration: 2020-01-22
Also published as: CN102062185A

Abstract

Provided is a planar cam speed reducer used for speed deceleration and acceleration. In a box cover and a box body, two rows of cams, a support shaft of the cams, a bearing of the cams, two rows of rolling bushes, two rows of shaft pins, driven wheels with a central disc and two side discs, a support shaft of the driven wheels and a bearing of the driven wheels are connected in order. The number of the cams in each row is equal and is larger than 4, and the cams are uniformly distributed. The two rows of cams are arranged on the same shaft in a staggered manner at a phase angle, the value of which is half of that of an included angle between two adjacent cams at any row. Corresponding to the cams, the two rows of shaft pins are uniformly distributed at the periphery of the side discs and the central discs of the driven wheels also in a staggered manner at a phase angle, the value of which is also a half of that of an included angle between two adjacent shaft pins at any row. All rolling bushes are disposed on the shaft pins one by one, and the number of the rolling bushes in each row is larger than that of the cams in each row. The driven wheels with the central disc and the two side discs are arranged on one shaft.

Description

The face cam retarder

Technical field

The utility model relates to the transmission device of a kind of energy deceleration or speedup, especially a kind of face cam retarder.

Background technique

Present known retarder is of a great variety, mainly contains gear reducer, worm reducer, plane table thermoconductivity meter, oil hydraulic motor retarder, few tooth difference Oscillating Tooth Gear Reducer retarder, cycloidal-pin wheel retarder, pin tooth gearing speed-reducer, harmonic gear reducer, low-speed and large torque motor and spiral speed reducer etc.Because gear reducer is made of gear pair and supporting axle thereof and bearing, case lid and casing, and the Gear Processing complex process, and the minimum number of teeth of master gear can not be less than 17, thereby volume is bigger, and especially the tooth root bending fatigue strength is lower for flank of tooth contact fatigue strength, structure, the complex process of other retarder of cycloidal-pin wheel retarder etc., efficient is low, the cost height, maintenance is difficult for, and the life-span is less.

The patent No. is 02219769.9 new type of cam retarder, and because of the corresponding single roller transmission of its single cam, only contact ratio in the ideal case is 1, when design, make, when installation produces error, just can't guarantee continuous motion unavoidablely; The minimum cam number of this invention simultaneously is 2, also be infeasible, this can cause the size of cam very big, the follower effective resistance moment at contact points place, cam top and the ratio of cam drive moment, be far smaller than the ratio of master and slave moving axis rotating speed, increase the effect of square thereby lost to slow down.And the anti-contact strength that above-mentioned two factors make the cam profile curved surface contact with roller is far smaller than gear transmission.

Summary of the invention

In order to overcome all deficiencies of prior art, the utility model provides a kind of and replaces single face cam retarder with two row's cams, the minimum number of teeth that this reducer structure is simple, low cost of manufacture, every row's cam number are less than gear far away, volume is less, weight is light, contact ratio is big, and bearing capacity is big.

The technical scheme in the invention for solving the technical problem is: a kind of face cam retarder, in case lid, casing, by two row cams and supporting axles thereof and bearing, two row's roll sleeves and pivot pin, have the follower and the supporting axle thereof that telophragma and two limits coil and connect with the bearing order, replace single cam with double row cam, replacing the arbitrary phase angle with fixing phase angle between two row's cams, is that 4 its minimum numbers of replacement are 2 with minimum cam number.Be located between the uniform cam of two on the same axis row to being staggered, the phase angle that respectively interlaces, its value be between adjacent two cams of arbitrary row angle 1/2nd, every row's cam number equates to be all more than 4, and makes an integral body with axle, or makes assembling type; Two corresponding row's roll sleeves are located on the pivot pin, two row's pivot pins are distributed in respectively on the both sides dish and the periphery between the telophragma that is located at the follower on the driven shaft, also be staggered between two row's pivot pins, the identical phase angle that respectively interlaces, its value is 1/2nd of angle between two adjacent pivot pins of arbitrary row.Cam profile curve is symmetrical arc in the plane perpendicular to its axis; Follower is made of two limit dishes and a telophragma, its axis is parallel with camshaft line, peripheral uniform one group of pivot pin along limit dish and telophragma, establish roll sleeve on it or do not establish roll sleeve, corresponding one by one with its cam that is meshed, adjacent pivot pin segmentum intercalaris is apart from equaling on the cam pitch circle pitch between adjacent two cams on its pitch circle, and every row's pivot pin number is greater than every row's cam number of correspondence.Its transmission setting type is the expansion of single-stage or multi-stage coaxial formula or prior art.When motor when coupling or band transmission or chain-driven drive the input shaft high speed rotating, the roll sleeve that cam is stirred with its engagement slowly runs through the output shaft that pivot pin drives on the follower, slows down realizing; Otherwise when follower is a driving link and when slowly running, its roll sleeve is stirred cam, makes the axle on the cam make high speed rotating, to realize speedup.

The beneficial effects of the utility model are, and are simple in structure, good manufacturability, and cost is low, easy to maintenance, volume is less, and the single-stage reduction speed ratio is bigger, and it is more steady to turn round, and bearing capacity is big, and its contact fatigue and bending fatigue strength are all greater than gear transmission, and be farther much larger than the transmission of pin tooth.Can be widely used in various gearing down, more be applicable to the low-speed heave-load occasion of engineering machinery, petroleum production machinery, and the speed increaser of wind-power generating system.

Description of drawings

Engaging drawings and Examples below further specifies the utility model

Fig. 1 is the tectonic maps of first embodiment's coaxial-type two-stage face cam retarder;

Fig. 2 is the partial enlarged view of Fig. 1;

Fig. 3 is the cam among Fig. 1 and the structural drawing of follower engagement driving;

Fig. 4 is the structural drawing of second embodiment's single-stage face cam retarder;

Fig. 5 is the 3rd embodiment's driven wheel structure figure.

Among Fig. 11, cam, 2, input shaft, 3, output shaft, 4, follower, 5, jack shaft, 6, the limit dish of follower, 7, the telophragma of follower, 8, bearing, 9, motor, 10, casing, 11, case lid, 12, roll sleeve, 13, pivot pin.

Embodiment

As shown in Figure 1, the utility model mainly is in case lid (11), casing (10), by two row's cams (1) and supporting axles (2) thereof and (5) and bearing (8), two row roll sleeve (12), pivot pins (13), have telophragma (7) and both sides and coil the follower (4) of (6) and supporting axle (3) thereof and (5) and bearing (8) and connect in proper order, the uniform cam number of every row is 4, angle between adjacent two cams of every row is 90 °, be located at that same axle is gone up and and axle make between two row's cams of one and be staggered, 45 ° at a phase angle respectively interlaces; Two corresponding row's roll sleeves are located on the pivot pin, two row's pivot pins are distributed in respectively on the follower both sides dish and the periphery between the telophragma that is located on the driven shaft, also be staggered between two row's pivot pins, respectively interlace 11.25 °, angle is 22.5 ° between interior adjacent two pivot pins of one row, cam profile curve is symmetrical arc in perpendicular to its axis plane, along the pitch between two adjacent cams on its pitch circle with corresponding along on the follower pitch circle between two adjacent pivot pins pitch equate, and every row's pivot pin number is 4 times of corresponding every row's cam number, and its transmission setting type is the two-stage coaxial formula.When motor (9) drives the input shaft high speed rotary, every row's cam promotes to make jack shaft do to turn round than low speed with the roll sleeve of its engagement through pivot pin, limit dish and telophragma synchronously, be located at cam on the jack shaft this moment and stir the slow speed turbine stage follower again and drive the output shaft (3) that connects with it and do to slowly run, realize deceleration; Otherwise when motor was connected its rotation of driving with output shaft, follower was that initiatively by the engagement of roll sleeve and cam, pushing shaft (2) is made more high speed rotating, and to realize the speedup transmission, this moment, spool (2) were output shaft.

In second embodiment of Fig. 4, being located at input shaft (2) goes up and is positioned at and two planes of this axis normal along its segment distance of being separated by, respectively uniform 4 equal sizes, two row's cams (1) of equivalent amount, the input shaft parallel with input shaft (3) is provided with follower (4), this is taken turns and is provided with two limits dish (6) and telophragmas (7), between limit dish and telophragma along periphery uniform the two row's pivot pins (13) that parallel to the axis, two row's roll sleeves (12) are provided thereon, and it is corresponding with two row's cams, adjacent two cams are along the pitch of its pitch circle in one row, and the interior two adjacent row's pivot pins of a row are equal one by one along the pitch of follower pitch circle, the interlaced arrangement of two row's cams, 45 ° at a phase angle interlaces, also corresponding being staggered between two row's pivot pins, interlace 11.25 ° at a phase angle, and every row's pivot pin number is 4 times of corresponding cam number.When the driving input shaft was done the higher speed rotation, every row's cam promoted synchronously and the roll sleeve of its engagement coils through pivot pin, limit, telophragma makes follower drive the output shaft low speed rotation, realizes slowing down; Otherwise when driving output shaft, follower becomes initiatively, by the engagement of roll sleeve and cam, and the revolution of actuating cam axle, this moment, cam was driven, its input shaft becomes output shaft and makes more high speed rotating, to realize the speedup transmission.

Fig. 5 is the 3rd follower among the embodiment, and this example has only been cancelled roll sleeve (12), makes direct and cam (1) engagement of pivot pin (13), and all the other structures and second embodiment are identical.

Claims

1. face cam retarder, in case lid, casing, by two row cams and supporting axles thereof and bearing, two row roll sleeve, pivot pins, have the follower and the supporting axle thereof that telophragma and two limits coil and connect with the bearing order, it is characterized in that: be located between the uniform cam of the row of two on the same axis to being staggered, the phase angle that respectively interlaces, its value is angle between adjacent two cams of arbitrary row half, every row's cam number equates to be all more than 4, and make an integral body with axle, or make assembling type; Two corresponding row's roll sleeves are located on the pivot pin, two row's pivot pins are distributed in respectively on the both sides dish and the periphery between the telophragma that is located at the follower on the driven shaft, two rows also are staggered between the pivot pins, the identical phase angle that interlaces, and its value is angle between adjacent two pivot pins of arbitrary row half.

2. the face cam retarder according to claim 1, it is characterized in that: the follower axis is parallel with camshaft line, and two row's pivot pin numbers equate, and respectively greater than two row's cam numbers, are gearing down when the cam active, otherwise are the speedup transmission.

3. the face cam retarder according to claim 1 is characterized in that: cam profile curve is the symmetrical arc deltoid in perpendicular to its axis plane.

4. the face cam retarder according to claim 1 is characterized in that: be distributed in the pivot pin on the periphery between follower both sides dish and the telophragma, establish roll sleeve on it or do not establish roll sleeve.

5. the face cam retarder according to claim 1 is characterized in that: the transmission setting type is single-stage or multi-stage coaxial formula or expansion.