CN110438621A - A kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism - Google Patents
A kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism Download PDFInfo
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- CN110438621A CN110438621A CN201910784049.3A CN201910784049A CN110438621A CN 110438621 A CN110438621 A CN 110438621A CN 201910784049 A CN201910784049 A CN 201910784049A CN 110438621 A CN110438621 A CN 110438621A
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- driven member
- input shaft
- output shaft
- rotary speed
- cam
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- 230000007246 mechanism Effects 0.000 title claims abstract description 52
- 238000009941 weaving Methods 0.000 title claims abstract description 16
- 230000021615 conjugation Effects 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 25
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
- D03C5/02—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices operated by rotating cams
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a kind of rotary speed shifting mechanisms, are characterized in that, including fixing seat, conjugate cam, input shaft, output shaft；And it is configured at driven member, conjugation engaging section and control arm between the input shaft and output shaft；The driven member is connected by revolute pair one with input shaft, and the axis parallel of the pivot center of the revolute pair one and input shaft；There are two the conjugation engaging section is set, predetermined position that is integrally formed or being installed on driven member is engaged with two cam curved surfaces of conjugate cam conjugation respectively；The control arm is in linkage between driven member and output shaft, and one end and driven member are rotatablely connected, and the other end and output shaft are rotatablely connected.The invention further relates to a kind of weaving shedding motion with rotary speed shifting mechanism.The rotary speed shifting mechanism can extend the effective vent time, to meet the needs of Looms wefting insertion, while be more applicable for high speed and weaving for driving weaving shedding motion.
Description
Technical field
The present invention relates to technical field of textile equipment, specifically, being a kind of rotation change applied to weaving shedding mechanism
Fast mechanism.
Background technique
Weaving is a kind of technical process that warp, weft threads are interweaved into fabric on loom.In weaving process, effectively
Can opening time be important technical parameter, operate normally to loom and textile physical characteristic has larger impact.It is mentioned here
The effective vent time refers to that open height is greater than the time range of minimum effective vent.Minimum effective vent, which refers to can satisfy, to be knitted
The minimal openings height made, minimum effective vent are different according to loom and weaving kind.
Currently, having cam shedding, dobbies and three kinds of jacquard for woven common shedding mechanism.Shedding motion exists
When for Looms, since the Filling Insertion Time that Looms need is long, the effective vent time is difficult to meet Looms wefting insertion
Needs, conventional way be exactly by maximum open extended height, with obtain the effective vent time extension.Maximum open height
It increases, the pulling force that in weaving process warp thread can be subject to when being open maximum becomes larger, warp tension variation increases, shedding motion
Load become larger etc. it is a series of be unfavorable for woven factor, be less useful for high speed and weave.
Therefore, a kind of rotary speed shifting mechanism is disclosed, as the driving mechanism of weaving shedding motion, for extending effective vent
Time has the meaning of very positive important.
Summary of the invention
The present invention is intended to provide a kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism.The rotation
Gear can extend the effective vent time, to meet the needs of Looms wefting insertion, together for driving weaving shedding motion
When be more applicable for high speed weave.
To solve the above problems, the technical scheme adopted by the invention is that:
A kind of rotary speed shifting mechanism, is characterized in that, structure includes:
Other components are provided with the fixing seat of support and installation foundation, the conjugate cam being fixed in fixing seat, is mentioned
For the input shaft of initial speed and torque, the output shaft to export final revolving speed and torque；And it is configured at the input shaft
Driven member, conjugation engaging section and control arm between output shaft；
Wherein, the driven member is connected by revolute pair one with input shaft to transmit the torque from input shaft, and
The pivot center of the revolute pair one and the axis parallel of input shaft；
There are two the conjugation engaging section is set, predetermined position that is integrally formed or being installed on driven member is convex with conjugation respectively
Two cam curved surfaces of wheel are conjugated engagement；
The control arm is in linkage between driven member and output shaft, and one end and driven member are rotatablely connected, the other end with it is defeated
Shaft rotation connection, to receive the driving torque of driven member and pass it to output shaft.
The fixing seat has fixing seat central shaft hole, and conjugate cam has rotation center axis hole, and the output shaft is successively
Run through and is rotatablely installed in conjugate cam and the central shaft hole of fixing seat.
The gear further includes shell matched with the fixing seat, and the shell and fixing seat are connected, the shell
Body offers casing center axis hole, and the input shaft runs through and is rotatablely installed in the casing center axis hole.
The input shaft and output shaft are concentric, and are connected by the revolute pair of no the constraint relationship therebetween.
The input shaft includes running through and extending to the input shaft end of hull outside and positioned at the intracorporal linkage of the shell
Abutting end, the linkage end includes two disk bodies for connecting firmly and being parallel to each other in integral structure or more components, is respectively opened on amphidisc
Equipped with an input shaft bore, the axle center of two input shaft bores and the axis parallel of input shaft；The driven member is set there are two driven
Part shaft, the axle center of described two driven member shafts is overlapped and the axis parallel with input shaft, by two driven member shafts with
And two input shaft bores, constitute the relationship that is rotatably assorted between input shaft and driven member, the i.e. revolute pair one.
The conjugate cam is composed of cam disc one and cam disc two, the cam of the cam disc one and cam disc two
Curved surface respectively with the conjugation engaging section conjugate constraint on driven member.
The conjugation engaging section is designed as a part of driven member, or is connected in one using individual component and driven member
It rises；
The structure type of the conjugation engaging section uses two curved-surface structures that sliding friction is formed with conjugation cam curved surface,
Or using two roller structures for forming rolling friction with conjugation cam curved surface.
The control arm is used to establish the transmitting and the constraint relationship of power between driven member and output shaft, and implementation uses
Link mechanism or shifting fork structure；
The link mechanism includes a connecting rod, and one end of the connecting rod and driven member are rotatablely connected, the connecting rod it is another
End is rotatablely connected with output shaft；
The shifting fork structure includes the shift fork being fixed on driven member, and the sliding block being installed on output shaft, the cunning
Block is matched in the fork pockets that shift fork opens up.
A kind of weaving shedding motion, is characterized in that, rotary speed shifting mechanism using the above structure.
Input shaft at the uniform velocity rotates, and driven member thereon is driven to move around conjugate cam, by control arm by the rotation of input shaft
Turn to be transmitted on output shaft, driven member is moved according to the shape of conjugate cam around own torque, and by control arm by itself
Movement be added in the rotary motion of output shaft, when input shaft direction of rotation and driven member around own torque movement and Tong Duolian
When the direction of motion that output shaft caused by bar generates is identical, output axle rotary speed is greater than input shaft, otherwise is less than input shaft.
Output shaft velocity of rotation variation be input shaft uniform rotation and conjugate cam system constantly adjust input shaft with
Output shaft relative angle shares the result of effect.The motion change rule of the output shaft is depended on by conjugate cam and driven member
The design parameter of the characteristics of motion of the conjugate cam system of composition, the conjugate cam system is designed according to actual needs.
A kind of rotary speed shifting mechanism of the invention, is made of conjugate cam system conjugate cam and driven member, driven member with
It moves with input shaft, and is moved according to the shape of conjugate cam around own torque, finally according to the constraint of driven member and input shaft
Power and torque are passed to output shaft by relationship.The relative angle of input shaft and output shaft is connected and adjusted by conjugate cam system
Degree, realizes output shaft speed-changing rotation when input shaft at the uniform velocity rotates, i.e. input shaft uniform rotation one week, the speed of output shaft is at this
Constantly change in one week.Rotary speed shifting mechanism of the invention is used to drive weaving loom shedding motion, effective vent can be extended
Time makes up shedding motion cooperation Looms effective vent time insufficient defect.
Detailed description of the invention
Fig. 1: the rotary speed shifting mechanism structural schematic diagram of embodiment one (control arm is link mechanism)；
Fig. 2: the rotary speed shifting mechanism structural schematic diagram of embodiment two (conjugation engaging section is roller structure)；
Fig. 3: the rotary speed shifting mechanism structural schematic diagram of embodiment three (control arm is shifting fork structure)；
Fig. 4: the rotary speed shifting mechanism structural schematic diagram (two groups of conjugate cams, two groups of driven members) of example IV；
Fig. 5: the rotary speed shifting mechanism structural schematic diagram (one group of conjugate cam, two groups of driven members) of embodiment five；
1, input shaft in the figure, 11, input shaft bore, 12, disk body, 2, output shaft, 21, output shaft hole, 3, conjugate cam,
31, cam disc one, 32, cam disc two, 33, center of rotation axis hole, 34, installation screw one, 4, driven member, 4a, driven member one,
4a1, driven member shaft one, 4a5, shift fork one, 4b, driven member two, 4b1, driven member shaft two, 4b5, shift fork two, 41, driven member
Shaft, 42, pitman shaft, 43, curved surface one, 44, curved surface two, 45, shift fork, 5, connecting rod, 51, tie rod holes one, 52, tie rod holes two, 6,
Fixing seat, 61, fixing seat central shaft hole, 62, installation screw two, 63, connecting hole one, 7, shell, 71, casing center axis hole, 72,
Connecting hole two, 73, oil filler point, 74, drain oil, 75, oil mirror mounting hole 8, idler wheel, 5a, sliding block, 5a1, sliding block mounting hole.
Specific embodiment
The embodiment of several specific structures of the invention is provided with reference to the accompanying drawing, so that those skilled in the art are to this
Structure composition, design principle and the operating process of invention are described in further detail.It should be appreciated that following embodiment is only abundant
The opposite embodiment optimized for illustrating technical solution of the present invention and selecting, must not be used as limiting the scope of the invention.
Embodiment one
The present embodiment discloses a kind of rotary speed shifting mechanism mainly realized by link mechanism, main parts size packet
It includes: input shaft 1, output shaft 2, conjugate cam 3, driven member 4, connecting rod 5, fixing seat 6, shell 7.Wherein, the conjugate cam
3, driven member 4, connecting rod 5 and fixing seat 6, which are installed on, assembles the shell inner cavity formed by fixing seat 6 and shell 7；The shell 7 is provided with
Casing center axis hole 71, it is respective by its that fixing seat 6 offers fixing seat central shaft hole 61, the input shaft 1 and output shaft 2
The central shaft hole revolute pair that shaft end is opened up with shell 7 and fixing seat 6 respectively is connect.
The specific structure of each component is described in detail individually below:
The input shaft 1 includes running through and extending to outside shell 7 for receiving external initial speed and torque, structure
Input shaft end and the end that is linked in the shell 7, the linkage end include in integral structure and being parallel to each other
Two disk bodies 12, respectively corresponded on two disk bodies 12 and offer input shaft bore 11, the axle center of two input shaft bores 11 with it is defeated
The axle center for entering axis 1 is parallel to each other, and the input shaft bore 11 is for being rotatablely connected driven member 4.
The driven member 4 is linked by revolute pair with input shaft 1, and structure includes two driven member shafts 41, institute
The rotational installation of driven member shaft 41 is stated inside two input shaft bores 11 of the input shaft 1；The pre-determined bit of driven member 4 installs
There are curved surface 1 and curved surface 2 44, and realizes the cooperation with conjugate cam 3, two curved-surface structure difference by two curved-surface structures
With the cam curved surface frictional fit of 3 two cam discs of conjugate cam, conjugate constraint relationship is formed；The driven member 4 with it is described defeated
Connecting rod 5 is equipped between shaft 2.
The connecting rod 5 has tie rod holes 1 and tie rod holes 2 52, projects in tie rod holes 1 therein and driven member 4
Pitman shaft 42 is rotatably assorted, and tie rod holes 2 52 connect the output shaft hole 21 reserved on output shaft 2 by revolute pair.
The conjugate cam 3 is made of cam disc 1 and cam disc 2 32, wherein there is center of rotation axis hole 33, and
The installation screw 1 opened up along 33 outer rim of center of rotation axis hole offers and one 34 phase of installation screw in fixing seat 6
Conjugate cam 3 is fixedly connected on fixation by the installation screw 1 and installation screw 2 62 by the installation screw 2 62 matched
On seat 6；Cam disc 1 and cam disc 2 32 respectively with 2 44 conjugate constraint of curved surface 1 and curved surface that is arranged on driven member 4.
Output shaft 2 be used for by after speed change final revolving speed and torque export outward, one end is connect with 1 revolute pair of input shaft
And cooperated by the linkage end of driven member 4 and connecting rod 5 and input shaft 1, the other end sequentially passes through in the rotation of conjugate cam 3
Arbor hole 33 and the fixing seat central shaft hole 61 of fixing seat 6 and the outside for finally extending to fixing seat 6.
Assembly relation between the fixing seat 6 and the shell 7 are as follows: circumferential one circle of laying is solid in the periphery of fixing seat 6
Reservation connecting hole 63, in the circumferential corresponding one circle shell connecting hole 72 of laying in the periphery of shell 7, by connector by corresponding two
Connecting hole handle is connected together.
The shell 7 other than there is casing center axis hole 71 to penetrate through input shaft 1, be additionally provided with oil filler point 73,
Drain oil 74 and oil mirror mounting hole 75.
The rotary speed shifting mechanism of the present embodiment, action process are as follows:
When 1 uniform rotation under external force of input shaft, the conjugate cam 3 in mechanism with the fixed of fixing seat 6 because closing
System and it is fixed, at this time due to the rotation relation of driven member 4 and input shaft 1, the driving torque of input shaft 1 can pass to driven
Part 4 makes driven member 4 generate the movement tendency in a set direction；And it due to two curved-surface structures on driven member 4 and is conjugated convex
Conjugation meshing relation between wheel 3, driven member 4 is finally under the collective effect of input shaft 1 and conjugate cam 3 around its own axis
Heart rotation, for connecting rod 5 because being in linkage with driven member 4 and output shaft 2 simultaneously, therefore when driven member 4 rotates, connecting rod 5 can drag output
Axis 2 completes rotation.When the direction of rotation of input shaft 1 and driven member 4 move through output caused by multi link around own torque
When the direction of motion that axis 2 generates is identical, axle rotary speed size input shaft is exported, otherwise is less than input shaft.
Embodiment two
The rotary speed shifting mechanism of the present embodiment is that bearing class component is provided on driven member 4 based on embodiment one
Substitute two curved-surface structures on driven member 4.Its main parts size includes: fixing seat 6, shell 7, input shaft 1, output shaft 2, is total to
Yoke cam 3, driven member 4 and connecting rod 5.
Specific assembling structure is as follows:
Shell 7 and fixing seat 6 offer casing center to assemble the supporting frame to form entire mechanism, shell 7 respectively
Axis hole 71, connecting hole 2 72, oil filler point 73, drain oil 74 and oil mirror mounting hole 75；Fixing seat center is respectively equipped in fixing seat 6
Axis hole 61, installation screw 2 62 and connecting hole 1, the wherein center line of fixing seat central shaft hole 61 and casing center axis hole 71
On the same line.Connecting hole 1 and connecting hole 2 72 are symmetrical arranged and fixing seat 6 and shell 7 are connected in one by two holes
It rises.
Input shaft 1 provides initial speed and torque, and structure includes input shaft end and the end that is linked, input shaft therein
End is run through and is connect with 61 revolute pair of casing center axis hole of shell 7；It extends out to outside shell 7 to accept external torsion
Square, inwardly be linked hold it is connected；The end that is linked includes two disk bodies 12, In for being in integral structure and being parallel to each other
Respectively offer an input shaft bore 11 on two disk bodies 12, the axle center of two input shaft bores be overlapped and with input shaft axis parallel,
Two input shaft bores 11 are for being rotatablely connected driven member 4.
The driven member 4 includes two driven member shafts, 41, pitman shafts 42 and two idler wheels 8, and driven member 4 passes through two
A driven member shaft 41 is connect with two 11 revolute pairs of input shaft bore on input shaft 1；Input shaft 1 and driven member 4 are realized with this
Between the relationship that is rotatably assorted.
The connecting rod 5 has tie rod holes 1 and tie rod holes 2 52, and one end passes through in tie rod holes 1 and driven member 4
Pitman shaft 42 is rotatably assorted, and the other end is matched by tie rod holes 2 52 with the output shaft hole 21 that output shaft 2 is reserved, between two holes
It installs rotational pin additional or rotation connection can be realized in bearing.
The conjugate cam 3 is made of cam disc 1 and cam disc 2 32, with center of rotation axis hole 33 and
The installation screw 1 that cam disc body end face opens up；The axle center of the center of rotation axis hole 33 and input shaft 1 is coaxial；Pass through connection
The installation screw 1 of conjugate cam 3 and the installation screw 2 62 of fixing seat 6, conjugate cam 3 is fixedly mounted in fixing seat 6
Side；Cam disc 1 and cam disc 2 32 respectively with two 8 conjugate constraints of idler wheel being arranged on driven member 4.
Output shaft 2 includes output shaft end and the end that is linked, the output to export final revolving speed and torque, structure
Shaft end is run through and is connect with 61 revolute pair of fixing seat central shaft hole of fixing seat 6, extends out to the outside of fixing seat 6 to defeated
Torque out is inwardly linked with driven member 4 and connecting rod 5；It is mutually without the constraint relationship between the output shaft 2 and input shaft 1
Rotation connection.
The rotary speed shifting mechanism of the present embodiment, action process are as follows:
When 1 uniform rotation under external force of input shaft, the conjugate cam 3 in mechanism with the fixed of fixing seat 6 because closing
System and it is fixed, at this time due to the rotation relation of driven member 4 and input shaft 1, the driving torque of input shaft 1 can pass to driven
Part 4 makes driven member 4 generate the movement tendency in a set direction；Again due to two idler wheels 8 and conjugate cam 3 on driven member 4
Between conjugation meshing relation, driven member 4 is finally under the collective effect of input shaft 1 and conjugate cam 3 around its own axle center
Rotation, because connecting rod 5 is in linkage with driven member 4 and output shaft 2 simultaneously, therefore when driven member 4 rotates, connecting rod 5 can drag output shaft 2
Complete rotation.
Embodiment three
A kind of rotary speed shifting mechanism of the present embodiment is on the basis of example 2, to cancel connecting rod 5, on driven member 4
Shifting fork structure is set, increases sliding block 5a on output shaft 2, and sliding block 5a is placed in the shift fork of driven member 4.Main parts size packet
It includes: input shaft 1, output shaft 2, conjugate cam 3, driven member 4, sliding block 5a, fixing seat 6, shell 7, idler wheel 8.
Specific assembly relation is as follows:
Shell 7 and fixing seat 6 offer casing center to assemble the supporting frame to form entire mechanism, shell 7 respectively
Axis hole 71, connecting hole 2 72, oil filler point 73, drain oil 74 and oil mirror mounting hole 75；Fixing seat center is respectively equipped in fixing seat 6
Axis hole 61, installation screw 2 62 and connecting hole 1, the wherein center line of fixing seat central shaft hole 61 and casing center axis hole 71
On the same line.Connecting hole 1 and connecting hole 2 72 are symmetrical arranged and fixing seat 6 and shell 7 are connected in one by two holes
It rises.
Input shaft 1 provides initial speed and torque, and structure includes input shaft end and the end that is linked, input shaft therein
End is run through and is connect with 61 revolute pair of casing center axis hole of shell 7；It extends out to outside shell 7 to accept external torsion
Square, inwardly be linked hold it is connected；The end that is linked includes two disk bodies 12, In for being in integral structure and being parallel to each other
It is respectively corresponded on two disk bodies 12 and offers input shaft bore 11, two input shaft bores 11 are for being rotatablely connected driven member 4.
The driven member 4 includes two driven member shafts, 41, shift forks 45 and two idler wheels 8, and driven member 4 passes through two
Driven member shaft 41 is connect with two 11 revolute pairs of input shaft bore on input shaft 1；With this realize input shaft 1 and driven member 4 it
Between the relationship that is rotatably assorted.
Realize that interaction relation, specific structure are described by shifting fork structure between the driven member 4 and the output shaft 2
Installation one has the shift fork 45 of fork pockets on driven member 4, is equipped with a sliding block 5a by revolute pair on the output shaft 2, described
Sliding block 5a is placed in the fork pockets of the shift fork 45 and two sides are engaged with shift fork, stirs sliding block 5a by shift fork 45 and realizes to defeated
The drive control of shaft 2.The sliding block 5a is that sliding block will be arranged on sliding block 5a with the rotational installation structure before the output shaft 2
Mounting hole 5a1 is connect by the output shaft hole 21 being arranged in revolute pair and output shaft 2.
The conjugate cam 3 is made of cam disc 1 and cam disc 2 32, with center of rotation axis hole 33 and
The installation screw 1 that cam disc body end face opens up；The axle center of the center of rotation axis hole 33 and input shaft 1 is coaxial；Pass through connection
The installation screw 1 of conjugate cam 3 and the installation screw 2 62 of fixing seat 6, conjugate cam 3 is fixedly mounted in fixing seat 6
Side；Cam disc 1 and cam disc 2 32 respectively with two 8 conjugate constraints of idler wheel being arranged on driven member 4.
Output shaft 2 includes output shaft end and the end that is linked, the output to export final revolving speed and torque, structure
Shaft end is run through and is connect with 61 revolute pair of fixing seat central shaft hole of fixing seat 6, extends out to the outside of fixing seat 6 to defeated
Torque out is inwardly linked with driven member 4；It is the rotation company mutually without the constraint relationship between the output shaft 2 and input shaft 1
It connects.
The rotary speed shifting mechanism of the present embodiment, action process are as follows:
When 1 uniform rotation under external force of input shaft, the conjugate cam 3 in mechanism with the fixed of fixing seat 6 because closing
System and it is fixed, at this time due to the rotation relation of driven member 4 and input shaft 1, the driving torque of input shaft 1 can pass to driven
Part 4 makes driven member 4 generate the movement tendency in a set direction；Again due to two idler wheels 8 and conjugate cam 3 on driven member 4
Between conjugation meshing relation, driven member 4 is finally under the collective effect of input shaft 1 and conjugate cam 3 around its own axle center
Rotation, shift fork 45 stirs the sliding block 5a on output shaft 2 while driven member 4 rotates, since the linkage of shift fork 45 and sliding block 5a are closed
System, when driven member 4 rotates, shift fork 45 completes rotation (the sliding block 5a in Fig. 4 in dotted line frame with movable slider 5a dragging output shaft 2
With the sliding block 5a component alternative each other on the left of it).
Example IV
The present embodiment based on embodiment three, be arranged two groups of conjugate cams 3a, 3b, respectively correspond two groups of driven member 4a,
4b.A kind of rotary speed shifting mechanism of the present embodiment, with reference to Fig. 4, main parts size includes: input shaft 1, and output shaft 2 is conjugated convex
Take turns a 3a, two 3b of conjugate cam, one 4a of driven member, driven member two 4b, sliding block 5a, fixing seat 6, shell 7, idler wheel 8.
Matching relationship between specific components is as follows:
Shell 7 and fixing seat 6 offer casing center to assemble the supporting frame to form entire mechanism, shell 7 respectively
Axis hole 71, connecting hole 2 72, oil filler point 73, drain oil 74 and oil mirror mounting hole 75；Fixing seat center is respectively equipped in fixing seat 6
Axis hole 61, installation screw 2 62 and connecting hole 1, the wherein center line of fixing seat central shaft hole 61 and casing center axis hole 72
On the same line.Connecting hole 1 and connecting hole 2 72 are symmetrical arranged and fixing seat 6 and shell 7 are connected in one by two holes
It rises.
Input shaft 1 provides initial speed and torque, and structure includes input shaft end and the end that is linked, input shaft therein
End is run through and is connect with 61 revolute pair of casing center axis hole of shell 7；It extends out to outside shell 7 to accept external torsion
Square, inwardly be linked hold it is connected；The end that is linked includes two disk bodies 12, In for being in integral structure and being parallel to each other
The two sides of two disk bodies 12 respectively symmetrically offer two groups of input shaft bores 11, the axle center of two groups of input shaft bores 11 with input shaft
Axis parallel, two groups of input shaft bores 11 are respectively used to one 4a of driven member and driven member two that rotation connection is located at input shaft two sides
4b。
One 4a of driven member and two 4b of driven member is separately mounted to the two sides of input shaft 1 and output shaft 2, and structure is identical, institute
Stating one 4a of driven member includes one 4a5 and two two one 4a1 of driven member shaft, shift fork idler wheel 8；One 4a of driven member by two from
One 4a1 of moving part shaft is connect with two 11 revolute pairs of input shaft bore of 1 side of input shaft；Input shaft 1 and driven member are realized with this
The relationship that is rotatably assorted between one 4a.Two 4b of driven member equally include two two 4b1 of driven member shaft, two 4b5 of shift fork and
Two idler wheels 8；Two 4b of driven member passes through two two 4b1 of driven member shaft and 11 turns of two input shaft bores of 1 other end of input shaft
Dynamic secondary connection；The relationship that is rotatably assorted between two 4b of input shaft 1 and driven member is realized with this.
Realize that linkage is closed by shifting fork structure between one 4a of driven member and two 4b of driven member and the output shaft 2
System, specific structure are as follows: respectively installed on two 4b of one 4a of driven member and the driven member one with fork pockets one 4a5 of shift fork and
Two 4b5 of shift fork passes through revolute pair in the two sides of the output shaft 2 respectively and is equipped with a sliding block 5a, the sliding block 5a of 2 two sides of output shaft
It is respectively placed in the fork pockets of two 4b5 of one 4a5 of shift fork and shift fork corresponding to it, and the two sides of sliding block 5a are engaged with shift fork,
Respective sliding block 5a realization is stirred to the drive control of output shaft 2 by one 4a5 of shift fork and two 4b5 of shift fork.The sliding block 5a with
Rotational installation structure before the output shaft 2 is sliding block mounting hole 5a1 will to be arranged on sliding block 5a to pass through revolute pair and output shaft 2
The connection of output shaft hole 21 (the sliding block 5a in Fig. 4 in dotted line frame and the sliding block 5a component alternative each other on the left of it) of upper setting.
It is connected between two 3b of one 3a of conjugate cam and conjugate cam and rotation center is overlapped, there is coaxial rotary middle spindle
Hole 33 and the installation screw 1 opened up in cam disc body end face；By the installation spiral shell for connecting installation screw 1 and fixing seat 6
Two conjugate cams are fixedly mounted on 6 inside of fixing seat by hole 2 62；The axle center of the center of rotation axis hole 33 and input shaft 1
Coaxially；One 3a of conjugate cam is made of one 3a1 of cam disc and two 3a2 of cam disc, and two 3b of conjugate cam is by cam disc
Two 3b2 of one 3b1 and cam disc；The cam curved surface of two conjugate cams is total to two groups of idler wheels 8 being arranged on two driven members respectively
Yoke constraint.
Output shaft 2 includes output shaft end and the end that is linked, the output to export final revolving speed and torque, structure
Shaft end is run through and is connect with 61 revolute pair of fixing seat central shaft hole of fixing seat 6, extends out to the outside of fixing seat 6 to defeated
Torque out is inwardly linked with driven member 4；It is the rotation company mutually without the constraint relationship between the output shaft 2 and input shaft 1
It connects.
Embodiment five
The present embodiment and example IV the difference is that, remove example IV in one group of conjugate cam, only retain
One group of conjugate cam is engaged with two groups of driven member conjugation.
Rotary speed shifting mechanism of the invention, has following structure advantage:
1, the relative rotation angle of input shaft and output shaft is connected and adjusted using conjugate cam system.
2, output shaft speed-changing rotation when input shaft at the uniform velocity rotates, i.e. input shaft uniform rotation one week are realized, output shaft
Speed constantly changes within this week.
3, the velocity variations of output shaft are the uniform rotation of input shaft and conjugate cam system constantly adjusts input shaft and defeated
The coefficient result of the relative angle of shaft.
4, the present apparatus can extend the effective vent time, make up shedding motion cooperation wide cut and knit for driving shedding motion
Machine effective vent time insufficient defect.
On the basis of any of the above example, the following improvement made belongs to the protection scope of this patent:
The quantity of driven member 4 is increased；
The quantity of conjugate cam 3 is increased；
Change driven member 4 exchanged with the driving type of output shaft 2 or by the axis on each component with well format to be formed it is hinged；
Increase other components, realize input shaft 1 rotary motion and conjugation camming (include: conjugate cam 3, it is driven
Part 4) collective effect, make the asynchronous rotary motion in input shaft 1 of the rotary motion of output shaft 2；
The above is several preferred embodiments of the invention, it is noted that for those of ordinary skill in the art
For, under the premise of not departing from concept of the invention, the several modifications and improvements that can also be made, these deform and change
Into all belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of rotary speed shifting mechanism, is characterized in that, structure includes:
To the fixing seat that other components are provided with support and installation foundation, the conjugate cam being fixed in fixing seat, provide just
The input shaft of beginning revolving speed and torque, the output shaft to export final revolving speed and torque；And it is configured at the input shaft and defeated
Driven member, conjugation engaging section and control arm between shaft；
Wherein, the driven member is connected by revolute pair one with input shaft to transmit the torque from input shaft, and described
The pivot center of revolute pair one and the axis parallel of input shaft；
There are two the conjugation engaging section is set, predetermined position that is integrally formed or being installed on driven member, respectively with conjugate cam
Two cam curved surface conjugation engagements；
The control arm is in linkage between driven member and output shaft, and one end and driven member are rotatablely connected, the other end and output shaft
Rotation connection, to receive the driving torque of driven member and pass it to output shaft.
2. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The fixing seat has fixing seat central shaft hole, and conjugate cam has rotation center axis hole, and the output shaft sequentially passes through
And it is rotatablely installed in conjugate cam and the central shaft hole of fixing seat.
3. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The gear further includes shell matched with the fixing seat, and the shell and fixing seat are connected, and the shell is opened
Equipped with casing center axis hole, the input shaft runs through and is rotatablely installed in the casing center axis hole.
4. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The input shaft and output shaft are concentric, and are connected by the revolute pair of no the constraint relationship therebetween.
5. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The input shaft includes running through and extending to the input shaft end of hull outside and be linked positioned at the shell is intracorporal
End, the linkage end includes two disk bodies for connecting firmly and being parallel to each other in integral structure or more components, is respectively offered on amphidisc
One input shaft bore, the axle center of two input shaft bores and the axis parallel of input shaft；The driven member set there are two driven member turn
The axle center of axis, described two driven member shafts is overlapped and the axis parallel with input shaft, passes through two driven member shafts and two
A input shaft bore constitutes the relationship that is rotatably assorted between input shaft and driven member, the i.e. revolute pair one.
6. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The conjugate cam is composed of cam disc one and cam disc two, the cam curved surface of the cam disc one and cam disc two
Respectively with the conjugation engaging section conjugate constraint on driven member.
7. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The conjugation engaging section is designed as a part of driven member, or is fixed together using individual component with driven member.
8. a kind of rotary speed shifting mechanism as claimed in claim 7, it is characterised in that:
The structure type of the conjugation engaging section uses two curved-surface structures that sliding friction is formed with conjugation cam curved surface, or
Using two roller structures for forming rolling friction with conjugation cam curved surface.
9. a kind of rotary speed shifting mechanism as described in claim 1, it is characterised in that:
The control arm is used to establish the transmitting and the constraint relationship of power between driven member and output shaft, and implementation uses connecting rod
Structure or shifting fork structure；
The link mechanism includes a connecting rod, and one end of the connecting rod and driven member are rotatablely connected, the other end of the connecting rod with
Output shaft rotation connection；
The shifting fork structure includes the shift fork being set on driven member, and the sliding block being installed on output shaft, and the sliding block is matched
In the fork pockets opened up together in shift fork.
10. a kind of weaving shedding motion, it is characterised in that:
With rotary speed shifting mechanism described in any claim of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784049.3A CN110438621A (en) | 2019-08-23 | 2019-08-23 | A kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism |
| PCT/CN2019/108027 WO2021035859A1 (en) | 2019-08-23 | 2019-09-26 | Rotary transmission mechanism and weaving shedding apparatus having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784049.3A CN110438621A (en) | 2019-08-23 | 2019-08-23 | A kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110438621A true CN110438621A (en) | 2019-11-12 |
Family
ID=68437441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910784049.3A Pending CN110438621A (en) | 2019-08-23 | 2019-08-23 | A kind of rotary speed shifting mechanism and the weaving shedding motion with the mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110438621A (en) |
| WO (1) | WO2021035859A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2021035859A1 (en) | 2021-03-04 |
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