CN108223614A - A kind of speed selects transmission mechanism - Google Patents

A kind of speed selects transmission mechanism Download PDF

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Publication number
CN108223614A
CN108223614A CN201711209980.6A CN201711209980A CN108223614A CN 108223614 A CN108223614 A CN 108223614A CN 201711209980 A CN201711209980 A CN 201711209980A CN 108223614 A CN108223614 A CN 108223614A
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CN
China
Prior art keywords
wire rope
block
centrifugal
hole
rope hole
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Granted
Application number
CN201711209980.6A
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Chinese (zh)
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CN108223614B (en
Inventor
王杰
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Shandong Zhuzhan Intelligent Equipment Co.,Ltd.
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Dongguan Songyan Zhida Industrial Design Co Ltd
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Priority to CN201711209980.6A priority Critical patent/CN108223614B/en
Publication of CN108223614A publication Critical patent/CN108223614A/en
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Publication of CN108223614B publication Critical patent/CN108223614B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00Automatic clutches
    • F16D43/02Automatic clutches actuated entirely mechanically
    • F16D43/04Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00Automatic clutches
    • F16D43/02Automatic clutches actuated entirely mechanically
    • F16D43/04Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D2043/145Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

The invention belongs to drive technology fields, more particularly to a kind of speed selection transmission mechanism, it includes total fixed plate, output shaft, drum, U-shaped connecting plate, input shaft, centrifugal-block, rotate rectangular block, first link block, second link block, first arcuate friction item, second arcuate friction item, first fixed pulley, first spring, second fixed pulley etc., wherein input shaft is through U-shaped connecting plate, rotate rectangular block, first link block and the second link block drive the first arcuate friction item and the rotation of the second arcuate friction item, first arcuate friction item and the second arcuate friction item realize a certain range of speed transmission of transmission mechanism with drum cooperation in varied situations, its is simple in structure, with preferable using effect.

Description

A kind of speed selects transmission mechanism
Technical field
The invention belongs to drive technology field more particularly to a kind of speed selection transmission mechanisms.
Background technology
At present in traditional brake pad centrifugation transmission mechanism, two brake pads being connected with drive member by spring inwards It draws, until they reach " separation " speed.Under that speed, centrifugal force will move out brake pad to contact with drum.It passes Moving axis rotates faster, and the pressure between brake pad and drum is bigger, in the torque for being increased transmission mechanism, but torque with Transmission shaft is accelerated and is increased, and transmission mechanism can not automatically select the torque in certain speed range, so as to make traditional brake pad The use scope of centrifugation transmission mechanism is limited.In order to realize that the transmission mechanism automatically selects the torque in certain speed range, institute To need to design a kind of transmission mechanism for automatically selecting speed.
The present invention designs a kind of speed selection transmission mechanism and solves the problems, such as above.
Invention content
To solve drawbacks described above of the prior art, the present invention disclose a kind of speed and selects transmission mechanism, it be use with Lower technical solution is realized.
A kind of speed selects transmission mechanism, it is characterised in that:It includes total fixed plate, output shaft, the first fixed plate, circle Disk, connection annulus, clamping rings, arch brace, drum, U-shaped connecting plate, the second fixed plate, input shaft, centrifugal-block, spin moment Shape block, the first link block, the second link block, the first arcuate friction item, the second arcuate friction item, the first fixed pulley, the first spring, First spring eye, pin hole, fillet, pin, second spring hole, centrifugal-block chamber, the first wire rope hole, fixed pulley chamber, the second steel wire rope Hole A, the second wire rope hole B, the second wire rope hole C, the second wire rope hole D, second spring, the first steel wire rope, the second steel wire rope, Second fixed pulley, third fixed pulley, wherein being equipped with the first fixed plate and the second fixed plate in total fixed plate;Clamping rings passes through Arch brace is mounted in total fixed plate;Drum is mounted on the inner headed face of clamping rings;The one end for connecting annulus is mounted on drum On wheel, the other end is equipped with disk;Output shaft passes through the first fixed plate, and one end of output shaft is mounted on disk;Input shaft is worn The second fixed plate is crossed, one end of input shaft is equipped with U-shaped connecting plate;It rotates rectangular block to be mounted on U-shaped connecting plate, rotates rectangle Block is between disk and U-shaped connecting plate;One end of rotation rectangular block is equipped with the first link block, and the other end is equipped with the second company Connect block.
Possessed structure all same in first link block and the second link block;Relative to the first link block, the first connection The first spring eye and pin hole are cut on block.
First fixed pulley is mounted on by axis on the first link block;Second fixed pulley is mounted on the second link block by axis On.
Structure and mounting means all same possessed by first arcuate friction item and the second arcuate friction item;Relative to first Arcuate friction item, the both ends of the first arcuate friction item are respectively provided with fillet;One end of first arcuate friction item is equipped with pin, the other end Cut with second spring hole;Pin on first arcuate friction item is inserted into the pin hole of the first link block;It inserts one end of first spring Enter into the first spring eye of the first link block, the other end is inserted into the second spring hole of the first arcuate friction item.
Rotating has centrifugal-block chamber in rectangular block;Centrifugal-block chamber to rotation rectangular block be connected with the first link block end face it Between cut with the first wire rope hole;First wire rope hole is communicated with centrifugal-block chamber;Centrifugal-block chamber is connected with first to rotation rectangular block There is fixed pulley chamber between the end face of link block;Fixed pulley chamber is to cutting with the second wire rope hole A and the second steel between centrifugal-block chamber Cord hole B;Second wire rope hole A and the second wire rope hole B are communicated with centrifugal-block chamber;Centrifugal-block chamber is connected to rotation rectangular block The second wire rope hole C is cut between the end face for having the second link block;Second wire rope hole C is communicated with centrifugal-block chamber;Centrifugal-block is pacified In centrifugal-block chamber;One end of second spring is mounted on centrifugal-block, and the other end is mounted on centrifugal-block chamber close to fixed pulley chamber Wall surface on;The second wire rope hole D is cut in centrifugal-block;First wire rope hole and the first fixed pulley are in same plane;The One end of one steel wire rope is mounted on centrifugal-block, and the other end rubs through the first wire rope hole and the first fixed pulley mounted on the first arc In rub piece;Third fixed pulley is mounted on by axis in fixed pulley chamber;Second fixed pulley, third fixed pulley, the second wire rope hole A, Second wire rope hole B, the second wire rope hole C and the second wire rope hole D are respectively positioned in same plane;One end peace of second steel wire rope On centrifugal-block, the other end is through the second wire rope hole A, third fixed pulley, the second wire rope hole B, the second wire rope hole C, Two wire rope hole D and the second fixed pulley are mounted on the second arcuate friction item.
First arcuate friction item and the second arcuate friction item match respectively with drum.
As being further improved for this technology, the weight of above-mentioned centrifugal-block is more than the first arcuate friction item and the second arc rubs The sum of weight of rub piece.
As being further improved for this technology, lubriation material is coated between above-mentioned first steel wire rope and the first wire rope hole.
As being further improved for this technology, above-mentioned second steel wire rope and the second wire rope hole A, wire rope hole B, second Lubriation material is coated between wire rope hole C and the second wire rope hole D.
As being further improved for this technology, when rotation rectangular block does not rotate, the first steel wire rope and the second steel wire rope are equal In relaxed state.
Relative to traditional drive technology, the present invention is not being sympathized with by the first arcuate friction item and the second arcuate friction item The a certain range of speed transmission of transmission mechanism is realized with drum cooperation under condition, it is simple in structure, have preferable using effect Fruit.
Description of the drawings
Fig. 1 is global facility distribution schematic diagram.
Fig. 2 is global facility perspective diagram.
Fig. 3 is global facility section schematic elevation view.
Fig. 4 is drum scheme of installation.
Fig. 5 is the first arcuate friction scheme of installation.
Fig. 6 is the first fixed pulley scheme of installation.
Fig. 7 is the first link block perspective diagram.
Fig. 8 is the first arcuate friction structure diagram.
Fig. 9 is the first arcuate friction partial perspective schematic view.
Figure 10 is the first spring structure schematic diagram.
Figure 11 is rotation rectangular block section(One)Schematic diagram.
Figure 12 is rotation rectangular block section(Two)Schematic diagram.
Figure 13 is centrifugal-block diagrammatic cross-section.
Figure 14 is the first steel wire rope scheme of installation.
Figure label title:1st, total fixed plate;2nd, output shaft;3rd, the first fixed plate;4th, disk;5th, annulus is connected;6th, it is solid Determine annulus;7th, arch brace;8th, drum;9th, U-shaped connecting plate;10th, the second fixed plate;11st, input shaft;12nd, centrifugal-block;13rd, it revolves Turn rectangular block;14th, the first link block;15th, the second link block;16th, the first arcuate friction item;17th, the second arcuate friction item;18、 First fixed pulley;19th, the first spring;20th, the first spring eye;21st, pin hole;22nd, fillet;23rd, it sells;24th, second spring hole;25、 Centrifugal-block chamber;26th, the first wire rope hole;27th, fixed pulley chamber;28th, the second wire rope hole A;29th, the second wire rope hole B;30th, Two wire rope hole C;31st, the second wire rope hole D;32nd, second spring;33rd, the first steel wire rope;34th, the second steel wire rope;35th, second Fixed pulley;36th, third fixed pulley.
Specific embodiment
As shown in Figure 1, it includes total fixed plate 1, output shaft 2, the first fixed plate 3, disk 4, connection annulus 5, fixed circle Ring 6, arch brace 7, drum 8, U-shaped connecting plate 9, the second fixed plate 10, input shaft 11, centrifugal-block 12, rotation rectangular block 13, the One link block 14, the second link block 15, the first arcuate friction item 16, the second arcuate friction item 17, the first fixed pulley 18, the first bullet Spring 19, the first spring eye 20, pin hole 21, fillet 22, pin 23, second spring hole 24, centrifugal-block chamber 25, the first wire rope hole 26, Fixed pulley chamber 27, the second wire rope hole A28, the second wire rope hole B29, the second wire rope hole C30, the second wire rope hole D31, Two springs 32, the first steel wire rope 33, the second steel wire rope 34, the second fixed pulley 35, third fixed pulley 36, as shown in Figure 1, 2, wherein First fixed plate 3 and the second fixed plate 10 are installed in total fixed plate 1;As shown in figure 4, clamping rings 6 is pacified by arch brace 7 In total fixed plate 1;Drum 8 is mounted on the inner headed face of clamping rings 6;The one end for connecting annulus 5 is mounted on drum 8, The other end is equipped with disk 4;Output shaft 2 passes through the first fixed plate 3, and one end of output shaft 2 is mounted on disk 4;Such as Fig. 1,3 institutes Show, input shaft 11 passes through the second fixed plate 10, and one end of input shaft 11 is equipped with U-shaped connecting plate 9;Rotation rectangular block 13 is mounted on On U-shaped connecting plate 9, rotation rectangular block 13 is between disk 4 and U-shaped connecting plate 9;As shown in figure 5, the one of rotation rectangular block 13 End is equipped with the first link block 14, and the other end is equipped with the second link block 15.
As shown in Fig. 5,7, possessed structure all same in the first link block 14 and the second link block 15;Relative to first Link block 14 cuts with the first spring eye 20 and pin hole 21 on first link block 14.
As shown in fig. 6, the first fixed pulley 18 is mounted on by axis on the first link block 14;Second fixed pulley 35 is pacified by axis On the second link block 15.
As shown in Fig. 5,8,9,10, structure and installation possessed by the first arcuate friction item 16 and the second arcuate friction item 17 Mode all same;Relative to the first arcuate friction item 16, the both ends of the first arcuate friction item 16 are respectively provided with fillet 22;First arc One end of fricting strip 16 is equipped with pin 23, and the other end cuts with second spring hole 24;Pin 23 on first arcuate friction item 16 is inserted into Into the pin hole 21 of the first link block 14;One end of first spring 19 is inserted into the first spring eye 20 of the first link block 14, The other end is inserted into the second spring hole 24 of the first arcuate friction item 16.
As shown in Figure 11,12, rotating has centrifugal-block chamber 25 in rectangular block 13;Centrifugal-block chamber 25 connects to rotation rectangular block 13 It is connected between the end face of the first link block 14 and cuts with the first wire rope hole 26;First wire rope hole 26 is communicated with centrifugal-block chamber 25; Centrifugal-block chamber 25, which is connected with to rotation rectangular block 13 between the end face of the first link block 14, has fixed pulley chamber 27;Fixed pulley chamber 27 To cutting with the second wire rope hole A28 and the second wire rope hole B29 between centrifugal-block chamber 25;Second wire rope hole A28 and the second steel Cord hole B29 is communicated with centrifugal-block chamber 25;Centrifugal-block chamber 25 is connected with the end face of the second link block 15 to rotation rectangular block 13 Between cut with the second wire rope hole C30;Second wire rope hole C30 is communicated with centrifugal-block chamber 25;As shown in Fig. 3,13, centrifugal-block 12 In centrifugal-block chamber 25;One end of second spring 32 is mounted on centrifugal-block 12, and the other end is leaned on mounted on centrifugal-block chamber 25 On the wall surface of nearly fixed pulley chamber 27;The second wire rope hole D31 is cut in centrifugal-block 12;First wire rope hole 26 and the first fixed pulley 18 in same plane;As shown in figure 14, one end of the first steel wire rope 33 is mounted on centrifugal-block 12, and the other end is through the first steel 26 and first fixed pulley 18 of cord hole is mounted on the first arcuate friction item 16;Third fixed pulley 36 is mounted on fixed pulley by axis In chamber 27;Second fixed pulley 35, third fixed pulley 36, the second wire rope hole A28, the second wire rope hole B29, the second wire rope hole C30 and the second wire rope hole D31 are respectively positioned in same plane;One end of second steel wire rope 34 is mounted on centrifugal-block 12, another End is through the second wire rope hole A28, third fixed pulley 36, the second wire rope hole B29, the second wire rope hole C30, the second wire rope hole D31 and the second fixed pulley 35 are mounted on the second arcuate friction item 17.
As shown in Figure 1, the first arcuate friction item 16 and the second arcuate friction item 17 match respectively with drum 8.
As shown in Fig. 5,13, the weight of above-mentioned centrifugal-block 12 is more than the first arcuate friction item 16 and the second arcuate friction item 17 The sum of weight.
As shown in Figure 11,14, lubriation material is coated between above-mentioned first steel wire rope, 33 and first wire rope hole 26.
As shown in Figure 12,14, above-mentioned second steel wire rope, 34 and second wire rope hole A28, wire rope hole B, the second steel wire Lubriation material is coated between cord hole C30 and the second wire rope hole D31.
As shown in figure 14, when rotation rectangular block 13 does not rotate, the first steel wire rope 33 and the second steel wire rope 34 are in pine Relaxation state.
As shown in figure 4, clamping rings 6 is mounted on by arch brace 7 in total fixed plate 1 in the present invention, drum 8 is mounted on On the inner headed face of clamping rings 6, then drum 8 is fixed by clamping rings 6 and drum 8 can surround the axis of oneself and rotate.Even The one end for connecing annulus 5 is mounted on drum 8, and the other end is equipped with disk 4, and output shaft 2 is mounted on disk 4;So drum 8 Rotation function can pass to output shaft 2 through connecting annulus 5 and disk 4.As shown in Figure 1, one end of input shaft 11 be equipped with it is U-shaped Connecting plate 9, rotation rectangular block 13 are mounted on U-shaped connecting plate 9;So the rotation function of input shaft 11 can be through U-shaped connecting plate 9 Pass to rotation rectangular block 13.
As shown in figure 5, the effect of the first link block 14 and the second link block 15 is equipped on rotation rectangular block 13 is:First 14 and second link block 15 of link block can follow rotation rectangular block 13 to rotate.One end of first arcuate friction item 16 passes through pin 23 On the second link block 15, the other end is mounted on by the first spring 19 on the first link block 14;Second arcuate friction item 17 one end is mounted on by pin 23 on the first link block 14, and the other end is mounted on by the first spring 19 on the second link block 15 Effect be:When rotating 13 low speed rotation of rectangular block, the first arcuate friction item 16 and the second arcuate friction item 17 are in centrifugal force It is moved under effect to 8 direction of drum, until the first arcuate friction item 16 and the second arcuate friction item 17 are in contact with drum 8, The rotation function of rectangle spill spin block can pass to drum 8 through the first arcuate friction item 16 and the second arcuate friction item 17 at this time.
As shown in Fig. 3,13, centrifugal-block 12 is by the effect that second spring 32 is mounted in centrifugal-block chamber 25:On the one hand When rotating 13 low speed rotation of rectangular block, centrifugal force caused by centrifugal-block 12 is less than the spring force of second spring 32, centrifugal-block 12 can not move;On the other hand it is when rotating 13 high speed rotation of rectangular block, centrifugal force caused by centrifugal-block 12 is more than second The sum of 17 centrifugal force of 32 spring force of spring, 16 centrifugal force of the first arcuate friction item and the second arcuate friction item, centrifugal-block 12 is supported or opposed Direction movement from second spring 32.
As shown in figure 14, one end of the first steel wire rope 33 is mounted on centrifugal-block 12, and the other end is through the first wire rope hole 26 It is mounted on the first arcuate friction item 16 with the first fixed pulley 18;One end of second steel wire rope 34 is mounted on centrifugal-block 12, separately One end the second wire rope hole A28, third fixed pulley 36, the second wire rope hole B29, the second wire rope hole C30, the second steel wire rope The effect that hole D31 and the second fixed pulley 35 are mounted on the second arcuate friction item 17 is:On the one hand when rotation rectangular block 13 does not revolve When turning, the first steel wire rope 33 and the second steel wire rope 34 are in relaxed state;Another aspect is when rotating rectangular block 13 and rotating the After one arcuate friction item 16 and the second arcuate friction item 17 are in contact with drum 8,34 base of the first steel wire rope 33 and the second steel wire rope Originally it is straightened;Another further aspect is when the rotation rotation of rectangular block 13 continues to increase, and centrifugal-block 12 starts to move through the first steel Cord 33 pulls the first arcuate friction item 16 to be detached from the second arcuate friction item 17 in the contact of drum 8 with the second steel wire rope 34, So as to which the first arcuate friction item 16 and the second arcuate friction item 17 will be unable to that drum 8 is driven to rotate, then transmission mechanism realizes It can only carry out the purpose being driven in certain speed range.
Specific embodiment:When input shaft 11 does not work, the first steel wire rope 33 and the second steel wire rope 34 are in relaxation shape State.
When input shaft 11 starts rotation, input shaft 11 drives rotation 13 low speed rotation of rectangular block by U-shaped connecting plate 9; First link block 14 and the second link block 15 are followed by rotation 13 low speed rotation of rectangular block;It is smaller caused by centrifugal-block 12 at this time Centrifugal force be less than the spring force of second spring 32, centrifugal-block 12 can not move;First arcuate friction item 16 and the second arc rub Rub piece 17 moves under the centrifugal force effect of itself to 8 direction of drum, until the first arcuate friction item 16 and the second arcuate friction Item 17 is in contact with drum 8, and the first spring 19 is stretched to greatest extent, and the first steel wire rope 33 and the second steel wire rope 34 are basic It is straightened;So rectangle spill spin block can drive the rotation of 8 low speed of drum through the first arcuate friction item 16 and the second arcuate friction item 17 Turn;Drum 8 drives the low speed rotation of output shaft 2 by connecting annulus 5 and disk 4 again.After input shaft 11 stops rotating, first Arcuate friction item 16, the second arcuate friction item 17, the first steel wire rope 33 and the second steel wire rope 34 are restored to state when not working.
When input shaft 11 becomes high speed rotation from low speed rotation, input shaft 11 drives rotation rectangle by U-shaped connecting plate 9 13 high speed rotation of block;First link block 14 and the second link block 15 are followed by rotation 13 high speed rotation of rectangular block;Centrifugal-block at this time Big centrifugal force caused by 12 is more than 32 spring force of second spring, 16 centrifugal force of the first arcuate friction item and the second arcuate friction item The sum of 17 centrifugal force, centrifugal-block 12 are moved to away from the direction of second spring 32;The movement of centrifugal-block 12 can pass through the first steel Cord 33 pulls the first arcuate friction item 16 to be detached from the second arcuate friction item 17 in the contact of drum 8 with the second steel wire rope 34, So as to which the first arcuate friction item 16 and the second arcuate friction item 17 will be unable to that drum 8 is driven to rotate, then transmission mechanism can not be into Row high-speed drive can only carry out low speed rotation.After input shaft 11 stops rotating, the first arcuate friction item 16, the second arc rub Rub piece 17, the first steel wire rope 33 and the second steel wire rope 34 are restored to state when not working.
In conclusion the present invention by the first arcuate friction item 16 and the second arcuate friction item 17 in varied situations with drum 8 cooperation of wheel realizes a certain range of speed transmission of transmission mechanism, simple in structure, has preferable using effect.

Claims (5)

1. a kind of speed selects transmission mechanism, it is characterised in that:It is characterized in that:It consolidates including total fixed plate, output shaft, first Fixed board, disk, connection annulus, clamping rings, arch brace, drum, U-shaped connecting plate, the second fixed plate, input shaft, centrifugal-block, Rotate rectangular block, the first link block, the second link block, the first arcuate friction article, the second arcuate friction article, the first fixed pulley, the One spring, the first spring eye, pin hole, fillet, pin, second spring hole, centrifugal-block chamber, the first wire rope hole, fixed pulley chamber, second Wire rope hole A, the second wire rope hole B, the second wire rope hole C, the second wire rope hole D, second spring, the first steel wire rope, second Steel wire rope, the second fixed pulley, third fixed pulley, wherein being equipped with the first fixed plate and the second fixed plate in total fixed plate;It is fixed Annulus is mounted on by arch brace in total fixed plate;Drum is mounted on the inner headed face of clamping rings;Connect one end of annulus On drum, the other end is equipped with disk;Output shaft passes through the first fixed plate, and one end of output shaft is mounted on disk; Input shaft passes through the second fixed plate, and one end of input shaft is equipped with U-shaped connecting plate;Rectangular block is rotated to be mounted on U-shaped connecting plate, Rectangular block is rotated between disk and U-shaped connecting plate;One end of rotation rectangular block is equipped with the first link block, other end installation There is the second link block;
Possessed structure all same in first link block and the second link block;Relative to the first link block, on the first link block Cut with the first spring eye and pin hole;
First fixed pulley is mounted on by axis on the first link block;Second fixed pulley is mounted on by axis on the second link block;
Structure and mounting means all same possessed by first arcuate friction item and the second arcuate friction item;Relative to the first arc Fricting strip, the both ends of the first arcuate friction item are respectively provided with fillet;One end of first arcuate friction item is equipped with pin, and the other end is cut with Second spring hole;Pin on first arcuate friction item is inserted into the pin hole of the first link block;One end of first spring is inserted into In first spring eye of the first link block, the other end is inserted into the second spring hole of the first arcuate friction item;
Rotating has centrifugal-block chamber in rectangular block;Centrifugal-block chamber is connected between the end face of the first link block to rotation rectangular block and cuts There is the first wire rope hole;First wire rope hole is communicated with centrifugal-block chamber;Centrifugal-block chamber is connected with the first connection to rotation rectangular block There is fixed pulley chamber between the end face of block;Fixed pulley chamber is to cutting with the second wire rope hole A and the second steel wire rope between centrifugal-block chamber Hole B;Second wire rope hole A and the second wire rope hole B are communicated with centrifugal-block chamber;Centrifugal-block chamber is connected with the to rotation rectangular block The second wire rope hole C is cut between the end face of two link blocks;Second wire rope hole C is communicated with centrifugal-block chamber;Centrifugal-block is mounted on In centrifugal-block chamber;One end of second spring is mounted on centrifugal-block, and the other end is mounted on wall of the centrifugal-block chamber close to fixed pulley chamber On face;The second wire rope hole D is cut in centrifugal-block;First wire rope hole and the first fixed pulley are in same plane;First steel One end of cord is mounted on centrifugal-block, and the other end is mounted on the first arcuate friction item through the first wire rope hole and the first fixed pulley On;Third fixed pulley is mounted on by axis in fixed pulley chamber;Second fixed pulley, third fixed pulley, the second wire rope hole A, second Wire rope hole B, the second wire rope hole C and the second wire rope hole D are respectively positioned in same plane;One end of second steel wire rope is mounted on On centrifugal-block, the other end is through the second wire rope hole A, third fixed pulley, the second wire rope hole B, the second wire rope hole C, the second steel Cord hole D and the second fixed pulley are mounted on the second arcuate friction item;
First arcuate friction item and the second arcuate friction item match respectively with drum.
2. a kind of speed selection transmission mechanism according to claim 2, it is characterised in that:The weight of above-mentioned centrifugal-block is more than The sum of weight of first arcuate friction item and the second arcuate friction item.
3. a kind of speed selection transmission mechanism according to claim 3, it is characterised in that:Above-mentioned first steel wire rope and first Lubriation material is coated between wire rope hole.
4. a kind of speed selection transmission mechanism according to claim 1, it is characterised in that:Above-mentioned second steel wire rope and second Lubriation material is coated between wire rope hole A, wire rope hole B, the second wire rope hole C and the second wire rope hole D.
5. a kind of speed selection transmission mechanism according to claim 1, it is characterised in that:When rotation rectangular block does not rotate When, the first steel wire rope and the second steel wire rope are in relaxed state.
CN201711209980.6A 2017-11-28 2017-11-28 A kind of speed selection transmission mechanism Active CN108223614B (en)

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CN114935818A (en) * 2022-06-16 2022-08-23 中国科学院长春光学精密机械与物理研究所 Tracking frame suitable for large-caliber telescope and large-caliber telescope

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SE2050909A1 (en) * 2020-07-17 2022-01-18 Brillianze Sweden Ab Actuator activated by transversal acceleration

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