CN2509377Y - Link cam speed reducer - Google Patents
Link cam speed reducer Download PDFInfo
- Publication number
- CN2509377Y CN2509377Y CN 01265705 CN01265705U CN2509377Y CN 2509377 Y CN2509377 Y CN 2509377Y CN 01265705 CN01265705 CN 01265705 CN 01265705 U CN01265705 U CN 01265705U CN 2509377 Y CN2509377 Y CN 2509377Y
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- CN
- China
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- cam
- connecting rod
- input shaft
- output shaft
- reductor
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Abstract
The utility model relates to a mechanical transmission device, which aims to develop a new connecting rod and cam speed reducer and has the advantages of high carrying capacity, high transmission efficiency, large output shaft rigidity and long service life. The mechanical transmission device has two structures, a speed reducer in a connecting and pushing rod form and a speed reducer in a connecting rod and cam form, wherein a cam 1 of the speed reducer in a connecting rod and pushing rod form is connected with a shaft 5 and the connecting shafts 9 and 4 of a connecting and pushing rod 2 adopts a gear differential principle; a roller sleeve 8 on the connecting rod 2 is convexly engaged with a high pair convex of the cam 1; the speed reducer in a connecting rod and cam form just interchanges the high pair elements of engaged pairs, forming a concave-convex engagement. Through the technical appraisement of Shaan 'xi scientific commission organization, the utility model belongs to the domestic pioneer and has the advantages of mature and reliable technology, easy industrialization and high economic benefit.
Description
The utility model relates to mechanical transmission, specially refers to a kind of connecting rod cam reductor.
In background technique, retarder is independently to seal transmission device between prime mover and the working machine, is used for reducing rotating speed and increases torque, to satisfy need of work.Wherein the involute tooth wheel decelerator is the most ripe technically, and is the most extensive in the application, occupies leading position.But because the relation of the theory of engagement, no matter be the hard flank of tooth or the soft flank of tooth, the little contact ratio of the single staged transmission ratio of Involutes Gears Transmission limited (contact ratio of the orthodont system master gear transmission of α=20 ° is 1.98 to the maximum), thereby influenced its deceleration effect and bearing capacity.Cycloidal-pin wheel retarder transmission single staged transmission ratio is big, contact ratio (has the tooth engagement of nearly half) greatly in theory, engagement pair is the hard flank of tooth, the bearing capacity height, and efficient also can be accepted, and uses more and more wider.But the poor structure rigidity of cycloidal-pin wheel retarder, output shaft should not be born bigger last item power, have limited its application area; Its bearing capacity is subjected to the restriction of rotary arm bearing again simultaneously, makes the bearing capacity of engagement pair can not get fully playing.The involute three-ring speed reducer that the eighties occurs has advantages such as simple in structure, good rigidly, but that shortcoming is a bearing capacity is less, and efficient is low, and temperature rise is big, can not continue to use.The nineties has occurred again a kind of " being with double crank ring-plate-type pin pendulum retarder synchronously ", this retarder is the two cover cycloidal-pin wheel mechanisms that pivoted arm moves outward to be 180 ° of configurations form, save output mechanism, and adopted synchronous band that two cover mechanisms are connected and overcome the dead point.
The purpose of this utility model is development a kind of novel " connecting rod cam reductor ", and the engagement driving principle of cam combined mechanism and new power all carry and mesh load-balancing device one by one to propose new connecting rod.Have the advantages that bearing capacity height, transmission efficiency height, output shaft rigidity are big, the life-span is long, can realize large-scale industrial production.
Technical solution of the present utility model is as follows:
Comprise: base (11) is gone up with bearing (10) with simple beam structure assembling input shaft (9) and driven shaft, it is characterized in that: input shaft (9) and driven crankshaft (4) are positioned at the corresponding both sides of output shaft (5), input shaft (9) and driven crankshaft (4) assemble respectively and are fixed on three set of bell cranks, eccentric bushing (3) and are mutually 120 ° parallel-crank mechanism, and the cam (1) on the output shaft (5) is formed the connecting rod cam reductor with roller sleeve (8) engagement on the parallel-crank mechanism connecting rod (2).
The uniform Z of plate shape connecting rod (2) upper edge circular hole periphery
2The individual pin (7) that has roller sleeve (8), the uniform Z of cam (1) periphery
1Individual identical cam profile, Z
2=Z
1+ 1, with the input shaft (9) of output shaft (5) switched in opposite go up with driven crankshaft (4) on crank, eccentric bushing (3) be connected connecting rod (2) by bearing (10).
Assembling balance shear spring (15) on the hole between above-mentioned three plate shape connecting rods (2) is as the power load-balancing device.
Another technological scheme of the present utility model is as follows:
Comprise: base (11) is gone up with bearing (10) with simple beam structure assembling input shaft (9) and driven shaft, it is characterized in that: input shaft (9) and driven crankshaft (4) are positioned at the corresponding both sides of output shaft (5), input shaft (9) and driven crankshaft (4) assemble respectively and are fixed on three set of bell cranks, eccentric bushing (3) and are mutually 120 ° parallel-crank mechanism, the pitch circle of output shaft (5) has the profile of the cam (1) on three groups of roller sleeve (8) and the three groups of parallel-crank mechanisms to be meshed on week, form another kind of connecting rod cam reductor.
Endoporus on the plate cam (1) has Z
1Individual identical cam profile, three are mutually 120 ° plate cam (1) and are mutually 120 ° crank, eccentric bushing (3) by bearing (10) and three groups of correspondences and are connected, turn to identical output shaft (5) to go up with input shaft (9) and driven crankshaft (4) and be connected push rod (2), push rod (2) the upper edge circumference Z that evenly distributes with key
2The individual pin (7) that has roller sleeve (8), Z
2=Z
1+ 1.
Assembling balance shear spring (15) on the hole between above-mentioned three plate cams (1) is as the power load-balancing device.
Assembling resilient bearing box (6) between base (11) and output shaft (5) is as the engagement load-balancing device.
Assembling resilient bearing box (6) between base (11) and input shaft (9) and driven crankshaft (4) is as the engagement load-balancing device.
Advantage of the present utility model and effect are as follows:
One, on structural design, new type speed reducer has also adopted following special construction:
(1) in order to guarantee that mechanism passes through the dead point smoothly, adopt single motor-driven three groups of schemes that are mutually 120 ° of configurations in the new type speed reducer, not only can overcome the motion indeterminacy phenomenon, guarantee that mechanism can pass through the dead center position smoothly, but also can balance part inertial force.
(2) in the new type speed reducer, connecting rod is all done the disk motion, and size and weight are all bigger, can produce bigger inertial force, adopted the structure of installing shear spring (15) between three connecting plates in the structure, the inertial force that connecting plate is produced is cancelled each other because of mutual wrong 120 °, and the noninertia masterpiece is used on the relevant bearing.
(3) the mutually wrong 120 ° of arrangements of three groups of same mechanism are adopted in novel deceleration, and each group mechanism is again the multiple spot engagement driving, exist the serious speed approximately of crossing.In order to compensate distortion and foozle, on the output shaft fulcrum, be provided with elastic floating and all carry link (6).
Two, invention effect
The retarder model machine of pressing the said structure design is through stand test and industrial endurance, and test result is through the on-the-spot detection of metallurgical heavy machinery inspection center of country, and main result is as follows:
(1) efficient is 0.97 when load rating;
(2) temperature rise is 44 ℃ during thermal equilibrium;
(3) noise 77dB (A);
New type speed reducer model machine has passed through the technical evaluation of Shaanxi Province State Scientific and Technological Commission tissue on September 16th, 2000, expert's conclusion is: this retarder transmission efficiency height, bearing capacity are big, the shaft form flexibly, good rigidly, price performance height, for domestic retarder industry has increased new varieties, belong to domestic initiation, reach advanced world standards.Maturation, reliable, industrialization is easy, economic benefit is high characteristics structurally possess skills.
The utility model description of drawings is as follows: Fig. 1 is a two degrees of freedom swing bar disk cam mechanism, and Fig. 2 is with connecting rod---the cam combined mechanism of parallel-crank mechanism Closed Graph 1 gained, is mechanism principle figure of the present utility model.Fig. 3 is first kind of connecting rod cam reductor front view, and Fig. 4 is the sectional view of Fig. 3 along the G-G plane.Fig. 5 is second kind of connecting rod cam reductor front view, and Fig. 6 is the sectional view of Fig. 5 along the J-J plane.
Above-mentioned number in the figure is described as follows: 1-cam, 2-connecting rod, push rod.(being connecting rod (2) in first scheme, is push rod (2) in the alternative plan), 3-crank, eccentric bushing, 4-driven crankshaft, 5-output shaft, 6-resilient bearing box, 7-pin, 8-roller sleeve, 9-input shaft, 10-bearing, 11-base, 15-balance shear spring.
Be that the utility model adjoint is described in further detail below: referring to Fig. 1, crank 3 (also claiming eccentric bushing) is the AB bar, and crank 3 is hinged at B point and connecting rod, push rod 2, is the center of circle with the B point, can ω
3Angular velocity rotation, cam 1 is the center of circle with the A point, is hinged and connected with crank 3, internal profile (being convex) contacts as higher pair in connecting rod, push rod 2 upper ends and the cam 1, and with ω
2Angular velocity rotates, and the degrees of freedom of entire mechanism is 2.Referring to Fig. 2, in order to obtain degrees of freedom is 1 mechanism, on the basis of Fig. 1, with a parallel-crank mechanism BACD it is closed, the CD bar is another crank 3, the moving point hinged bar of C and cam 1 AC that is composed of a fixed connection, at this novel link---in the cam combined mechanism, two cranks 3 are with speed in the same way during the dead axle rotation, the motion of cam 1 disk, by the higher pair contact, promote connecting rod, the rotation of push rod 2 dead axles, the profile of cam 1 is made constant angular velocity by push rod 2 and is rotated design.Referring to Fig. 3 and Fig. 4, utilize above-mentioned principle to make the connecting rod cam reductor, cam 1 is assemblied on the output shaft 5 by key, and axle 5 is assemblied on the base 11 by resilient bearing box 6, axle 5 is assemblied on the base 11 with simple beam structure by bearing 10, establishes on cam 1 basic circle evenly distribution Z
1Individual identical profile.Input shaft 9 and driven crankshaft 4 are symmetrically distributed in output shaft 5 both sides.Axle 9 assembles three crank, eccentric bushings 3 (effect of crank and eccentric bushing here is identical, below with " eccentric bushing ") that are mutually 120 ° respectively with axle 4, and three groups of eccentric bushing 3 usefulness bearings 10 connect with connecting rod 2 respectively.Uniform Z on connecting rod 2 endoporus
2The individual pin 7 that has roller sleeve 8, Z
2Z in individual roller sleeve 8 and the cam 1
1Individual cam profile is done the higher pair contact.Both sides relation is Z
2=Z
1+ 1, form a tooth difference engagement pair, when eccentric bushing 3 rotates, just can realize gearing down, velocity ratio i by a tooth difference principle
31=ω
3/ ω
1=-Z
1Balance shear spring (15) as the power load-balancing device is assemblied between parallel three plate shape connecting rods (2).Connecting rod 2 endoporus have profile 12.Referring to Fig. 5 and Fig. 6, this is the retarder of another kind of connecting rod cams, and basic structure is the same, according to identical principle, just the profile of three cams is made on the endoporus of cam 1, and connects with input shaft 9 by bearing, eccentric bushing 3, and three groups are mutually 120 ° of cams, 1 profile, 14 numbers and are Z
1Push rod 2 on the output shaft 5, uniform Z on its pitch circle
2The individual pin 7 that has roller sleeve 8.Engagement pair is made up of cam 1 and roller sleeve 8.Z
2=Z
1+ 1, input shaft 9 is identical with output shaft 5 sense of rotation, and its velocity ratio is i
32=ω
3/ ω
2=Z
1
Claims (8)
1, connecting rod cam reductor, comprise: base (11) is gone up with bearing (10) with simple beam structure assembling input shaft (9) and driven shaft, it is characterized in that: input shaft (9) and driven crankshaft (4) are positioned at the corresponding both sides of output shaft (5), input shaft (9) and driven crankshaft (4) assemble respectively and are fixed on three set of bell cranks, eccentric bushing (3) and are mutually 120 ° parallel-crank mechanism, and the cam (1) on the output shaft (5) is formed the connecting rod cam reductor with roller sleeve (8) engagement on the parallel-crank mechanism connecting rod (2).
2, according to the described connecting rod cam reductor of claim 1, it is characterized in that: the uniform Z of plate shape connecting rod (2) upper edge circular hole periphery
2The individual pin (7) that has roller sleeve (8), the uniform Z of cam (1) periphery
1Individual identical cam profile, Z
2=Z
1+ 1, with the input shaft (9) of output shaft (5) switched in opposite go up with driven crankshaft (4) on crank, eccentric bushing (3) be connected connecting rod (2) by bearing (10).
3, according to the described connecting rod cam reductor of claim 1, it is characterized in that: assembling balance shear spring (15) on the hole between above-mentioned three plate shape connecting rods (2), as the power load-balancing device.
4, connecting rod cam reductor, comprise: base (11) is gone up with bearing (10) with simple beam structure assembling input shaft (9) and driven shaft, it is characterized in that: input shaft (9) and driven crankshaft (4) are positioned at the corresponding both sides of output shaft (5), input shaft (9) and driven crankshaft (4) assemble respectively and are fixed on three set of bell cranks, eccentric bushing (3) and are mutually 120 ° parallel-crank mechanism, the pitch circle of output shaft (5) has the profile of the cam (1) on three groups of roller sleeve (8) and the three groups of parallel-crank mechanisms to be meshed on week, form another kind of connecting rod cam reductor.
5, according to the described connecting rod cam reductor of claim 4, it is characterized in that: the endoporus on the plate cam (1) has Z
1Individual identical cam profile, three are mutually 120 ° plate cam (1) and are mutually 120 ° crank, eccentric bushing (3) by bearing (10) and three groups of correspondences and are connected, turn to identical output shaft (5) to go up with input shaft (9) and driven crankshaft (4) and be connected push rod (2), push rod (2) the upper edge circumference Z that evenly distributes with key
2The individual pin (7) that has roller sleeve (8), Z
2=Z
1+ 1.
6, according to the described connecting rod cam reductor of claim 4, it is characterized in that: assembling balance shear spring (15) on the hole between above-mentioned three plate cams (1), as the power load-balancing device.
7, according to claim 1 or 4 described connecting rod cam reductors, it is characterized in that: assembling resilient bearing box (6) between base (11) and output shaft (5), as the engagement load-balancing device.
8, according to claim 1 or 4 described connecting rod cam reductors, it is characterized in that: assembling resilient bearing box (6) between base (11) and input shaft (9) and driven crankshaft (4), as the engagement load-balancing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265705 CN2509377Y (en) | 2001-09-28 | 2001-09-28 | Link cam speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265705 CN2509377Y (en) | 2001-09-28 | 2001-09-28 | Link cam speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509377Y true CN2509377Y (en) | 2002-09-04 |
Family
ID=33672509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01265705 Expired - Fee Related CN2509377Y (en) | 2001-09-28 | 2001-09-28 | Link cam speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509377Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006105720A1 (en) * | 2005-04-02 | 2006-10-12 | Jianhui He | Speed reducer |
| CN106704493A (en) * | 2017-01-24 | 2017-05-24 | 陕西理工学院 | Tricyclic speed reducer capable of balancing inertia moment of annular plates |
-
2001
- 2001-09-28 CN CN 01265705 patent/CN2509377Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006105720A1 (en) * | 2005-04-02 | 2006-10-12 | Jianhui He | Speed reducer |
| CN106704493A (en) * | 2017-01-24 | 2017-05-24 | 陕西理工学院 | Tricyclic speed reducer capable of balancing inertia moment of annular plates |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |