CN207333570U - A kind of centrifugal friction type velocity profile limiting device - Google Patents
A kind of centrifugal friction type velocity profile limiting device Download PDFInfo
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- CN207333570U CN207333570U CN201721090069.3U CN201721090069U CN207333570U CN 207333570 U CN207333570 U CN 207333570U CN 201721090069 U CN201721090069 U CN 201721090069U CN 207333570 U CN207333570 U CN 207333570U
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- centrifugal
- block
- rotating shaft
- central rotating
- limiting device
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Abstract
The utility model discloses a kind of centrifugal friction type velocity profile limiting device, and belonging to the Control Technique of Vibration and Noise field device includes transmission component, limit assembly and outer casing stand；Shown casing assembly provides installation foundation for limit assembly and transmission component, the movement of external equipment is passed to limit assembly by transmission component, limit assembly into the limit friction power to match with movement velocity, and realizes when speed exceedes threshold values exterior conversion of motion thorough spacing.The utility model can provide the spacing power to match with required control speed for buoyant raft vibration absorber, while limiting device rigidity is relatively low, and the overall stiffness of buoyant raft vibration absorber is influenced less, to can guarantee that the vibration isolating effect and speed control demand of buoyant raft vibration absorber.
Description
Technical field
The utility model belongs to Control Technique of Vibration and Noise field, more particularly to a kind of shock proof centrifugal friction type speed
Type limiting device.
Background technology
The influence that vibration produces surrounding environment during effectively to reduce heavy mechanical equipment operation, generally uses individual layer at present
Isolation mounting, double-layer vibration isolating device, middle-size and small-size buoyant raft vibration absorber, large-scale buoyant raft vibration absorber.Designed in above-mentioned vibration absorber
During, to ensure that its vibration isolating effect to mechanical equipment meets technical requirement, generally using Low rigidity damper, this will
Cause the wave stability and shock resistance of vibration absorber substantially to reduce.
Under normal conditions, stability is waved and when shock resistance is unsatisfactory for design objective requirement in vibration absorber, must
It must be control effectively to its displacement by increasing limiting device, be showed most in especially medium-sized and large-scale buoyant raft vibration absorber design
To be obvious.
Buoyant raft vibration absorber is that multiple devices are installed on it to carry out the public rack for concentrating vibration damping, medium-sized and large-scale at present
The limiter that buoyant raft vibration absorber largely uses is displacement type limiter, and velocity profile limiter is related to less.When buoyant raft subtracts
When vibrating device is subject to external acceleration input, dynamic respond is the integration of speed responsive, may not arrived also when reaching limitation speed
Up to limiting displacement.With the raising of buoyant raft vibration absorber security requirement, proposing control for buoyant raft vibration absorber speed needs
Ask.
During using air-bag shock absorber as limiter, raft frame must bear the thrust of both sides air-bag shock absorber for a long time.Adopt
During with rubber shock absorber, to meet buoyant raft vibration absorber to its larger spacing power requirement, rubber shock absorber need to possess enough
Rigidity.The use of limiter is equivalent to addition of buoyant raft vibration absorber extra rigidity so that the entirety of buoyant raft vibration absorber
Rigidity increases, the final integral vibration isolation effect for reducing buoyant raft vibration absorber.
Utility model content
In view of this, the utility model provides a kind of centrifugal friction type velocity profile limiting device, can be buoyant raft vibration damping
Device provides the spacing power to match with required control speed, while limiting device rigidity is relatively low, to the whole of buoyant raft vibration absorber
Body stiffness effect is little, can guarantee that the vibration isolating effect and speed control demand of buoyant raft vibration absorber.
A kind of centrifugal friction type velocity profile limiting device, the device include transmission component, limit assembly and outer casing stand；Institute
Show that casing assembly provides installation foundation for limit assembly and transmission component, transmission component passes to the movement of external equipment spacing
Exterior conversion of motion is exceeded threshold by component, limit assembly into the limit friction power to match with movement velocity, and in speed
Realized during value thoroughly spacing.
Further, the transmission component includes bevel gear wheel, bevel pinion, rack, gear shaft, gear axle bearing, tooth
Wheel bearing bearing, central rotating shaft, central rotating shaft bearing, central rotating shaft bearing and effect panel,
Two cylindrical bars are welded with the effect panel to be connected with rack through shell end cap, and external active force is passed through
Rack passes to gear shaft, and gear shaft is installed on outer casing stand by gear axle bearing and gear shaft bearing spider, gear shaft
On bevel gear wheel is installed, bevel gear wheel is engaged with the bevel pinion on central rotating shaft, and external input is passed to central rotating shaft,
Central rotating shaft is installed on central rotating shaft bearing by central rotating shaft bearing.
Further, the outer casing stand includes bottom plate, housing cylinder and end cap, the both ends of the housing cylinder respectively by
Bottom plate and end cap are closed, and tooth-shape structure is machined with housing cylinder inner wall.
Further, the limit assembly includes centrifugal-block stent, rubber block, centrifugal-block, spring and guide finger, two institutes
The both ends that centrifugal-block stent is separately fixed at central rotating shaft are stated, is installed and centrifuged by guide finger circumference between two centrifugal-block stents
Block, the bottom of centrifugal-block are connected by spring with central rotating shaft, the top installation rubber block of centrifugal-block；When central rotating shaft rotates
Centrifugal-block is radially movable so that generation frictional force is contacted between rubber block and housing cylinder, when central rotating shaft rotating speed by centrifugal force
Improve, centrifugal force increase, frictional resistance increases therewith, and when rotating speed further improves, rubber block is compressed, the tooth form on centrifugal-block
Structure contacts thoroughly spacing with the tooth-shape structure on housing cylinder inner wall.
Further, the tooth-shape structure of the centrifugal-block is arranged on the upper and lower ends of rubber block, with housing cylinder inner wall
On tooth-shape structure matching；And the tooth-shape structure on centrifugal-block highly less than the rubber block height after installation, ensures centrifugal-block
After radial motion, the rubber block installed on centrifugal-block contacts housing cylinder friction wall first.
Further, the spring rate of the connection centrifugal-block bottom and central rotating shaft ensures centrifugal-block at the low rotational speed
Centrifugal force makes spring elongation meet that rubber block is not contacted with cylinder friction wall.
Further, the rubber stock material depends on required friction coefficient, and the rigidity of rubber block is by spacing speed
The tooth-shape structure on centrifugal force and centrifugal-block under threshold value is determined less than the ratio of the height of rubber block.
Further, the guide finger is oval flat, ensures that centrifugal-block is radially movable, while it passes through intensity school
Calculation is assessed, meets stress demand during centrifugal-block braking.
Beneficial effect：
1st, the centrifugal friction type velocity profile limiting device of the utility model is able to ensure that buoyant raft vibration absorber vibration isolating effect not
It is affected；And waved in buoyant raft vibration absorber and under impact condition, can effectively control buoyant raft vibration absorber raft frame
Speed, it is ensured that buoyant raft vibration absorber wave stability and stability of shock resistance meets technical requirement.
2nd, the centrifugal friction type velocity profile limiting device of the utility model is capable of providing with velocity variations and changes spacing
Power, and it is thoroughly spacing when speed exceedes threshold value.
3rd, the centrifugal velocity profile limiting device technical solution of the utility model can be according to the skill of different buoyant raft vibration absorbers
Art demand, carries out Proper Match design, it is ensured that meet various buoyant raft vibration absorber to spacing dress to limit assembly and transmission component
The technical requirements put.
4th, the centrifugal friction type velocity profile limiting device of the utility model is easy for installation, and dismounting is easy to maintenance.
Brief description of the drawings
Fig. 1 is centrifugal friction type velocity profile limiting device main sectional view；
Fig. 2 removes the 3-D view after housing cylinder for centrifugal friction type velocity profile limiting device；
Fig. 3 is centrifugal friction type velocity profile limiting device housing cylinder 3-D view；
Housing cylinder and limit assembly 3-D view when Fig. 4 does not work for centrifugal friction type velocity profile limiting device；
Housing cylinder and limit assembly sectional view when Fig. 5 does not work for centrifugal friction type velocity profile limiting device；
Limit assembly section view and not sectional view when Fig. 6 produces spacing power for centrifugal friction type velocity profile limiting device；
Fig. 7 reaches speed limit threshold time limit hyte part Status view for centrifugal friction type velocity profile limiting device.
Wherein：1- effect panel 2- rack 3- gear shaft 4- bevel pinion 5- bevel gear wheel 6- gear axle bearings 7-
Gear shaft bearing spider 8- central rotating shaft 9- central rotating shaft bearing 10- central rotating shaft bearing 11- centrifugal-block stent 12- rubbers
Blob of viscose 13- centrifugal-block 14- spring 15- guide finger 16- bottom plate 17- housing cylinder 18- end caps.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
As shown in figure 1 and 2, the utility model provides a kind of centrifugal friction type velocity profile limiting device, device tool
Body includes：Effect panel 1, rack 2, gear shaft 3, bevel pinion 4, bevel gear wheel 5, gear axle bearing 6, gear shaft bearing spider
7th, central rotating shaft 8, central rotating shaft bearing 9, central rotating shaft bearing 10 form transmission component, are mainly used for moving external equipment
Pass to limit assembly.Centrifugal-block stent 11, rubber block 12, centrifugal-block 13, spring 14, guide finger 15 form limit assembly, main
It is used to provide the limit friction power to match with speed.Bottom plate 16, housing cylinder 17, end cap 18 form outer casing stand component,
It is mainly used for providing installation foundation for limit assembly and transmission component.Limit assembly, transmission component and outer casing stand three parts group
Part forms centrifugal friction type velocity profile limiting device.
Specific installation steps are as follows：
Two cylindrical bars of effect panel 1 are connected through a screw thread through corresponding two circular holes on end cap 18 with rack 2,
Linear bearing is installed as guide rail in circular hole, 2 other end of rack is used as guide rail by linear bearing and is fixed on central rotating shaft branch
On seat 10, it is intermeshed with hour rack 2 and gear shaft 3,3 both ends of gear shaft are fixed on gear axle bearing by gear axle bearing 6
In bearing 7, gear shaft bearing spider 7 is bolted on end cap 18.Bevel gear wheel 5, bevel gear wheel are housed on gear shaft 3
5 are driven with the intermeshing of bevel pinion 4.Bevel pinion 4 is installed on the end of central rotating shaft 8, and central rotating shaft 8 passes through central rotating shaft
Bearing 9 is fixed on central rotating shaft bearing 10 and bottom plate 16.Two centrifugal-block stents 11, centrifugal-block are fixed with central rotating shaft 8
13 are installed between two centrifugal-block stents, and its one end is connected by spring 14 with central rotating shaft 8, and guide finger 15 is passed through on centrifugal-block 13
Guide groove be fixed on two centrifugal-block stents 11, for centrifugal-block movement play the guiding role.Rubber block 12 is installed on centrifugal-block 13
Between housing cylinder 17, bottom plate 16 is installed with housing cylinder 17 by screw thread.
Centrifugal friction type velocity profile limiting device operation principle is：Two cylindrical bars on effect panel 1 pass through shell end
Lid 18 is connected with the rack 2 of transmission component, and external active force is passed to gear shaft 3 by rack 2, is provided with gear shaft 3
Bevel gear wheel 5, bevel gear wheel 5 and small bevel gear 4 wheel engage connection, external input are passed to central rotating shaft 8, on central rotating shaft 8
It is fixed with two centrifugal-block stents 11, six centrifugal-blocks 13 is installed by 15 circumference of guide finger between two centrifugal-block stents 11,
The bottom of centrifugal-block 13 is connected by spring 14 with central rotating shaft 8, the top installation rubber block 12 of centrifugal-block 13.When center turns
Centrifugal-block 13 is radially movable so that contacting generation friction between rubber block 12 and housing cylinder 17 by centrifugal force when axis 8 rotates
Power, when 8 rotating speed of central rotating shaft improves, centrifugal force increase, friction resistance force increase, when rotating speed further improves, rubber block 12 is pressed
Compression deformation reaches limit value, and the tooth-shape structure on centrifugal-block 13 contacts thoroughly spacing with the tooth-shape structure on 17 inner wall of housing cylinder.
With reference to attached drawing 3 and attached drawing 4:For a kind of centrifugal friction type velocity profile limiting device housing cylinder three of the utility model
Dimensional view and housing cylinder and limit assembly 3-D view when not working, inner wall and the limit assembly centrifugal-block 13 of housing cylinder 17
There are two circle ratchets at tooth-shape structure matched position, be and 12 matched friction zone of rubber block on limit assembly between two circle ratchets
Domain, tooth top is highly consistent on 17 inner wall of the region and housing cylinder.
With reference to attached drawing 5:Housing cylinder when not working for a kind of centrifugal friction type velocity profile limiting device of the utility model
With limit assembly sectional view, centrifugal-block 13 is fixed on centrifugal-block stent 11 by guide finger 15 when not working, at guide finger 15
In one end of 13 guide groove of centrifugal-block, 12 distance from top housing cylinder of rubber block, 17 inner wall installed on centrifugal-block 13 has between 5mm
Gap.
With reference to attached drawing 6：For the utility model a kind of centrifugal friction type velocity profile limiting device produce spacing power when it is spacing
Component cuts open and not sectional view.When the rotating speed of central rotating shaft 8 reaches certain value, centrifugal-block 13 is subject to centrifugal forces to overcome bullet
The pulling force of spring 14, guide finger 15 it is spacing under radially movable 5mm, rubber block 12 contacts generation with 17 inner wall of housing cylinder
Frictional force.There are tooth-shape structure in the groove both sides that centrifugal-block 13 installs rubber block 12, with 17 inner wall rubbing surface both sides of housing cylinder
Tooth-shape structure matches, when rigid connection touches 17 inner wall of housing cylinder to rubber block 12 under the action of the centrifugal force, 13 both sides tooth of centrifugal-block
Shape structure has 3mm gaps with tooth-shape structure on 17 inner wall of housing cylinder, does not play position-limiting action.
With reference to attached drawing 7：Reach speed limit threshold time limit for a kind of centrifugal friction type velocity profile limiting device of the utility model
Hyte part Status view.On the basis of the state of attached drawing 4, the rotating speed of central rotating shaft 8 further improves, and centrifugal-block 13 is centrifuged
Power increases, and rubber block 12 produces frictional force increase, while centrifugal force causes rubber block 12 to compress, 13 both sides tooth-shape structure of centrifugal-block
Be gradually reduced with tooth-shape structure gap on 17 inner wall of housing cylinder, both when reaching speed limit threshold value contact engagement provide spacing
Power, while both contacts apply an extra pressure to rubber block 12 so that the frictional force that rubber block produces further increases,
Final thoroughly braking.
In conclusion the above is only the preferred embodiments of the present utility model only, the utility model is not intended to limit
Protection domain.Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on, should all wrap
It is contained within the scope of protection of the utility model.
Claims (8)
1. a kind of centrifugal friction type velocity profile limiting device, it is characterised in that the device includes transmission component, limit assembly and outer
Shell stent；Shown casing assembly provides installation foundation for limit assembly and transmission component, and transmission component is by the movement of external equipment
Pass to limit assembly, limit assembly by exterior conversion of motion into the limit friction power to match with movement velocity, and
Speed is realized thoroughly spacing when exceeding threshold value.
2. centrifugal friction type velocity profile limiting device as claimed in claim 1, it is characterised in that the transmission component includes big
Bevel gear, bevel pinion, rack, gear shaft, gear axle bearing, gear shaft bearing spider, central rotating shaft, central rotating shaft bearing,
Central rotating shaft bearing and effect panel,
Two cylindrical bars are welded with the effect panel to be connected with rack through shell end cap, and external active force is passed through into rack
Gear shaft is passed to, gear shaft is installed on outer casing stand by gear axle bearing and gear shaft bearing spider, pacified on gear shaft
Equipped with bevel gear wheel, bevel gear wheel is engaged with the bevel pinion on central rotating shaft, and external input is passed to central rotating shaft, center
Shaft is installed on central rotating shaft bearing by central rotating shaft bearing.
3. centrifugal friction type velocity profile limiting device as claimed in claim 1, it is characterised in that the outer casing stand includes bottom
Plate, housing cylinder and end cap, the both ends of the housing cylinder are closed by bottom plate and end cap respectively, are added on housing cylinder inner wall
Work has tooth-shape structure.
4. centrifugal friction type velocity profile limiting device as claimed in claim 3, it is characterised in that the limit assembly include from
Heart block stent, rubber block, centrifugal-block, spring and guide finger, two centrifugal-block stents are separately fixed at the two of central rotating shaft
Hold, centrifugal-block is installed by guide finger circumference between two centrifugal-block stents, the bottom of centrifugal-block passes through spring and central rotating shaft
Connection, the top installation rubber block of centrifugal-block；When central rotating shaft rotates, centrifugal-block is radially movable so that rubber by centrifugal force
Contacted between block and housing cylinder and produce frictional force, when central rotating shaft rotating speed improves, centrifugal force increase, frictional resistance increases therewith
Greatly, when rotating speed further improves, rubber block is compressed, the tooth-shape structure on centrifugal-block and the tooth-shape structure on housing cylinder inner wall
Contact is thoroughly spacing.
5. centrifugal friction type velocity profile limiting device as claimed in claim 4, it is characterised in that the tooth form of the centrifugal-block
Structure setting is matched with the tooth-shape structure on housing cylinder inner wall in the upper and lower ends of rubber block；And the tooth form on centrifugal-block
Structure height ensures centrifugal-block after radial motion, the rubber block installed on centrifugal-block is first less than the rubber block height after installation
First contact housing cylinder friction wall.
6. centrifugal friction type velocity profile limiting device as claimed in claim 5, it is characterised in that the connection centrifugal-block bottom
With the spring rate of central rotating shaft ensure the centrifugal force of centrifugal-block at the low rotational speed make spring elongation meet rubber block not with circle
Cylinder friction wall contact.
7. centrifugal friction type velocity profile limiting device as claimed in claim 6, it is characterised in that the rubber stock material depends on
It is low with the tooth-shape structure on centrifugal-block by the centrifugal force under spacing threshold speed in required friction coefficient, the rigidity of rubber block
Determined in the ratio of the height of rubber block.
8. centrifugal friction type velocity profile limiting device as claimed in claim 4, it is characterised in that the guide finger is oval flat
It is flat-shaped, ensure that centrifugal-block is radially movable, while it passes through strength check, meets stress demand during centrifugal-block braking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721090069.3U CN207333570U (en) | 2017-08-29 | 2017-08-29 | A kind of centrifugal friction type velocity profile limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721090069.3U CN207333570U (en) | 2017-08-29 | 2017-08-29 | A kind of centrifugal friction type velocity profile limiting device |
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| Publication Number | Publication Date |
|---|---|
| CN207333570U true CN207333570U (en) | 2018-05-08 |
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ID=62370739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721090069.3U Expired - Fee Related CN207333570U (en) | 2017-08-29 | 2017-08-29 | A kind of centrifugal friction type velocity profile limiting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207333570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448542A (en) * | 2017-08-28 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of centrifugal friction type velocity profile stopping means |
-
2017
- 2017-08-29 CN CN201721090069.3U patent/CN207333570U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448542A (en) * | 2017-08-28 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of centrifugal friction type velocity profile stopping means |
| CN107448542B (en) * | 2017-08-28 | 2023-01-31 | 中国船舶重工集团公司第七一九研究所 | Centrifugal friction type speed limiting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20190829 |