CN206831094U - A kind of fraction wheel drive device for gas suspension platform rotational positioning - Google Patents
A kind of fraction wheel drive device for gas suspension platform rotational positioning Download PDFInfo
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- CN206831094U CN206831094U CN201720633370.8U CN201720633370U CN206831094U CN 206831094 U CN206831094 U CN 206831094U CN 201720633370 U CN201720633370 U CN 201720633370U CN 206831094 U CN206831094 U CN 206831094U
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- cylinder
- friction
- gas suspension
- suspension platform
- friction pulley
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Abstract
Friction-driven technical field is the utility model is related to, espespecially a kind of fraction wheel drive device for gas suspension platform rotational positioning；Mainly include friction wheel driving mechanism, cylinder pressing mechanism and hinge support mechanism, described friction wheel driving mechanism one end is connected with cylinder pressing mechanism, and other end is connected by main body substrate with hinge support mechanism；Mainly pass through friction wheel driving mechanism, the theory of mechanics of the motion of cylinder pressing mechanism and hinge support mechanism three, rotated more specifically by motor driving friction pulley, the gas suspension platform being fixedly connected with a mounting plate is driven to rotate by the stiction between friction pulley and ground, when needing the size of regulating friction force, the easy precompressed adjusted between friction pulley and ground can be realized to adjust the precompression of friction pulley by the pressure of adjustment and the source of the gas of cylinders, it can even be accomplished between friction pulley and ground without precompressed without friction by regulation, the utility model is simple and reliable for structure, it is easily achieved.
Description
Technical field
Friction-driven technical field is the utility model is related to, espespecially a kind of friction for gas suspension platform rotational positioning
Wheel drive unit.
Background technology
Gas suspension structure has compared to the guideway supporting construction of traditional mechanical contact not to be contacted without friction etc.
Feature, therefore gas suspension structure is more and more applied in the motion structure of some high accuracy, heavy duty and big stroke.By
In the stability highest of supported at three point, therefore gas suspension platform is typically supported by three groups of floating cushions, will be when floating cushion is inflated
Floating cushion produces one layer tens microns of air film with base station surface, does not contact no friction between floating cushion and base station surface now,
Due to the thickness very little of air film, therefore floating cushion is typically placed at the accurate granite surface plate that surface planarity only has a few micrometers
On；The type of drive of gas suspension platform rotary motion is typically using friction wheel drive；Such as China Patent Publication No. is
CN103149227A, patent name are in " a kind of accurate bulk motion device for high-resolution neutron powder diffractometer "
State's application for a patent for invention, a kind of delivery pallet of gas suspension is disclosed, positioned using friction wheel drive, friction pulley is fixedly mounted
In delivery tray bottom, precompressed has been permanently connected between friction pulley and granite ground；The shortcomings that this structure of friction wheel is：Rub
The precompressed wiped between wheel and ground is inconvenient to adjust, and can not accomplish between friction pulley and ground without precompressed without friction.
The content of the invention
In order to overcome deficiency of the prior art, the utility model aim to provide one kind be easy to adjust friction pulley and ground it
Between precompressed fraction wheel drive device, it might even be possible to accomplish to be used for air supporting without precompressed friction free is a kind of between friction pulley and ground
The fraction wheel drive device of supporting platform rotational positioning.
To achieve the above object, the technical solution adopted in the utility model is：It is fixed that one kind is used for the rotation of gas suspension platform
The fraction wheel drive device of position, described device mainly include friction wheel driving mechanism, cylinder pressing mechanism and hinge support machine
Structure, described friction wheel driving mechanism one end are connected with cylinder pressing mechanism, and other end passes through main body substrate and hinge support
Mechanism connects.
The friction wheel driving mechanism include axially mounted motor, motor mount, shaft coupling, rotating shaft, locking nut,
Bearing gland, angular contact ball bearing, bearing block and friction pulley；Wherein motor is fixedly mounted on main body substrate by motor mount
Right side, motor is connected with rotating shaft by shaft coupling, and the rotating shaft is connected with bearing block by a pair of angular contact bearings, described one
The inner ring of angular contact bearings is compressed by locking nut and rotating shaft, and the outer ring of the pair of angular contact bearing passes through bearing gland
Compressed with bearing block, remote motor side and the friction pulley of the rotating shaft are fixedly linked；The bearing block is fixedly mounted on main body base
The downside of plate.
Described cylinder pressing mechanism mainly includes cylinder mounting seat, cylinder and side shield, and the cylinder mounting seat passes through
Side shield is fixedly mounted on the left side of main body substrate, and described cylinder has two, and Parallel Symmetric is arranged in cylinder mounting seat, gas
The push rod apical support of cylinder is provided with installing plate.
Described hinge support mechanism mainly includes hinge axis, hinge seat, bushing and back-up ring, and described hinge seat has two
Individual, Parallel Symmetric is arranged on main body substrate respectively, and described hinge axis or so respectively has an axle and the axle of left and right two is concentric, described
One of axle of hinge axis is connected with hinge seat by bushing, other in which axle and another hinge seat of the hinge axis
It is connected by bushing, the hinge axis is fixedly connected with a mounting plate；Described installing plate bottom is provided with stop screw.
Described cylinder difference Parallel Symmetric is arranged on the both sides of friction pulley center of rotation.
Ejecting rod of cylinder just pushes up installing plate bottom and produces upward active force after the cylinder interior inflation, passes through
Adjustment and the amount of force at the top of the pressure adjustable ejecting rod of cylinder of the source of the gas of cylinders.
Described hinge seat is respectively symmetrically fixedly mounted on the main body substrate of the both sides of friction pulley center of rotation.
The stop screw is arranged on the middle bottom of installing plate, the head upright of stop screw by the way of threaded connection
Downwards and there are several millimeters of gaps with the top surface of main body substrate.
The friction pulley is made by polyurethane material.
Described main body substrate is the stepped plate of right low left high.
When the installing plate of described fraction wheel drive device is fixedly linked with gas suspension platform, is driven and rubbed by motor
Wheel rotates, and then the stiction between friction pulley and ground drives the gas suspension platform being fixedly connected with a mounting plate around rotation
Turn central rotation.
Beneficial effects of the present invention are embodied in：The utility model mainly passes through friction wheel driving mechanism, cylinder pressing mechanism
With the theory of mechanics of the motion of hinge support mechanism three, rotated more specifically by motor driving friction pulley, pass through friction
Take turns and drive the gas suspension platform that is fixedly connected with a mounting plate to rotate the stiction between ground, when needing regulating friction force
Size when, can realize that easy regulation rubs with the pressure of the sources of the gas of cylinders to adjust the precompression of friction pulley by adjusting
Precompressed between wheel and ground, it can even be accomplished by regulation new without friction, this practicality without precompressed between friction pulley and ground
Type is simple and reliable for structure, it is easy to accomplish.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present utility model.
Fig. 2 is front view structure schematic cross-section of the present utility model.
Fig. 3 is A-A profile directions structural representation in fig. 2.
Fig. 4 is decomposition texture schematic diagram of the present utility model.
Overlooking the structure diagram when Fig. 5 is the utility model use state.
Main structure diagram when Fig. 6 is the utility model use state.
Accompanying drawing marks explanation：1- motors, 2- motor mounts, 3- shaft couplings, 4- rotating shafts, 5- locking nuts, 6- bearing pressures
Lid, 7- angular contact ball bearings, 8- bearing blocks, 9- main body substrates, 10- friction pulleys, 11- cylinder mounting seats, 12- cylinders, 13- hinges
Axle, 14- hinge seats, 15- bushings, 16- back-up rings, 17- installing plates, 18- stop screws, 19- gas suspension platforms, in 20- rotations
The heart, 21- side shields.
Embodiment
The embodiment that the invention will now be described in detail with reference to the accompanying drawings：
As Figure 1-4, a kind of fraction wheel drive device for gas suspension platform rotational positioning, described device master
To include friction wheel driving mechanism, cylinder pressing mechanism and hinge support mechanism, described friction wheel driving mechanism one end and gas
Cylinder pressing mechanism is connected, and other end is connected by main body substrate 9 with hinge support mechanism, and the main body substrate 9 is left high right
Low stepped plate.
The friction wheel driving mechanism includes axially mounted motor 1, motor mount 2, shaft coupling 3, rotating shaft 4, locking
Nut 5, bearing gland 6, angular contact ball bearing 7, bearing block 8 and friction pulley 10；Wherein motor 1 is fixed by motor mount 2
Installed in the right side of main body substrate 9, motor 1 is connected with rotating shaft 4 by shaft coupling 3, and the rotating shaft 4 passes through a pair with bearing block 8
Angular contact bearing 7 is connected, and the inner ring of the pair of angular contact bearing 7 is compressed by locking nut 5 and rotating shaft 4, the pair of angle
The outer ring of contact bearing 7 is compressed by bearing gland 6 and bearing block 8, and remote motor side and the friction pulley 10 of the rotating shaft 4 are fixed
It is connected；The bearing block 8 is fixedly mounted on the downside of main body substrate 9；The friction pulley 10 is made by polyurethane material.
Described cylinder pressing mechanism mainly includes cylinder mounting seat 11, cylinder 12 and side shield 21, the cylinder installation
Seat 11 is fixedly mounted on the left side of main body substrate 9 by side shield 21, and described cylinder 12 has two, and Parallel Symmetric is arranged on gas
In cylinder mounting seat 11, the push rod apical support of cylinder 12 is provided with installing plate 17；The more particularly described cylinder 12 divides
Other Parallel Symmetric is arranged on the both sides of friction pulley center of rotation；Ejecting rod of cylinder just pushes up installing plate after the inner inflatable of cylinder 12
17 bottoms simultaneously produce upward active force, the work at the top of pressure adjustable ejecting rod of cylinder by adjusting the source of the gas being connected with cylinder 12
Firmly size.
Described hinge support mechanism mainly includes hinge axis 13, hinge seat 14, bushing 15 and back-up ring 16, described hinge
Seat 14 has two, and Parallel Symmetric is arranged on main body substrate 9 respectively, and more particularly described hinge seat 14 is respectively symmetrically fixed
It is mounted on the main body substrate 9 of the both sides of the center of rotation of friction pulley 10；The hinge axis 13 or so respectively have an axle and
The axle of left and right two is concentric, and one of axle of the hinge axis 13 is connected with hinge seat 14 by bushing 16, the hinge axis 13
Other in which axle is connected with another hinge seat 14 by bushing 16, and the hinge axis 13 is fixedly linked with installing plate 17.
The described bottom of installing plate 17 is provided with stop screw 18, and the stop screw 18 is pacified by the way of threaded connection
Mounted in the middle bottom of installing plate 17, the head upright of stop screw 18 is downward and has several millimeters of gaps with the top surface of main body substrate 9.
As seen in figs. 5-6, when the utility model is in running order, i.e., the installing plate of described fraction wheel drive device
17 with gas suspension platform 19 be fixedly linked when, by motor 1 drive friction pulley 10 rotate, then between friction pulley 10 and ground
Stiction drive the gas suspension platform that is fixedly linked with installing plate 17 to be rotated around pivot 20；More particularly rub
The one end for wiping actuation is fixed on installing plate 17 by hinge support mechanism, and the other end of friction wheel driving mechanism is then pacified
Equipped with two symmetrical cylinders 12, friction pulley 10 is then placed exactly in the middle part of hinge axis 13 and cylinder 12；Need to make
During with friction pulley 10, then cylinder 12 is inflated, and now the push rod of cylinder 12 up withstands installing plate 17 and produces downward pressure, this
When friction pulley 10 and ground between contact and have precompressed, drive friction pulley 10 to rotate by motor 1, pass through friction pulley 10 and ground
Between stiction drive the gas suspension platform 19 that is fixedly linked with installing plate 17 to rotate, when needing the big of regulating friction force
Hour, the precompression of friction pulley 10 can be adjusted by adjusting the pressure for the source of the gas being connected with cylinder 12, when gas suspension platform
19 after pivot 20 is rotated in place, and cylinder 12 is died, now the push rod of cylinder 12 down return, now friction pulley 10 with
To there is no precompressed between ground, the method is simple and reliable for structure, is easy to carry out.
It is described above, only it is preferred embodiment of the present utility model, not technical scope of the present utility model is made any
Limitation, the technical staff of the industry, under the inspiration of the technical program, some deformations and modification can be made, it is every according to this
Any modification, equivalent variations and the modification that embodiment of the technical spirit of utility model to more than is made, still fall within this practicality
In the range of new technique scheme.
Claims (8)
- A kind of 1. fraction wheel drive device for gas suspension platform rotational positioning, it is characterised in that：Described device is main Including friction wheel driving mechanism, cylinder pressing mechanism and hinge support mechanism, described friction wheel driving mechanism one end and cylinder Pressing mechanism connects, and other end passes through main body substrate（9）Mechanism is connected with hinge support；The friction wheel driving mechanism includes axially mounted motor（1）, motor mount（2）, shaft coupling（3）, rotating shaft（4）、 Locking nut（5）, bearing gland（6）, angular contact ball bearing（7）, bearing block（8）And friction pulley（10）；Wherein motor（1）Pass through Motor mount（2）It is fixedly mounted on main body substrate（9）Right side, motor（1）With rotating shaft（4）Pass through shaft coupling（3）It is connected, institute State rotating shaft（4）With bearing block（8）Pass through a pair of angular contact bearings（7）It is connected, the pair of angular contact bearing（7）Inner ring pass through Locking nut（5）With rotating shaft（4）Compress, the pair of angular contact bearing（7）Outer ring pass through bearing gland（6）With bearing block （8）Compress, the rotating shaft（4）Remote motor side and friction pulley（10）It is fixedly linked；The bearing block（8）It is fixedly mounted on master Structure base board（9）Downside；Described cylinder pressing mechanism mainly includes cylinder mounting seat（11）, cylinder（12）And side shield（21）, the cylinder peace Fill seat（11）Pass through side shield（21）It is fixedly mounted on main body substrate（9）Left side, described cylinder（12）There are two, it is parallel right Title is arranged on cylinder mounting seat（11）On, cylinder（12）Push rod apical support installing plate is installed（17）；Described hinge support mechanism mainly includes hinge axis（13）, hinge seat（14）, bushing（15）And back-up ring（16）, it is described Hinge seat（14）There are two, Parallel Symmetric is arranged on main body substrate respectively（9）On, the hinge axis（13）Respectively there is an axle left and right And the axle of left and right two is concentric, the hinge axis（13）One of axle and hinge seat（14）Pass through bushing（15）It is connected, it is described Hinge axis（13）Other in which axle and another hinge seat（14）Pass through bushing（15）It is connected, the hinge axis（13）With peace Loading board（17）It is fixedly linked；Described installing plate（17）Bottom is provided with stop screw（18）.
- 2. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：The described cylinder（12）Parallel Symmetric is arranged on the both sides of friction pulley center of rotation respectively.
- 3. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：The cylinder（12）Ejecting rod of cylinder just pushes up installing plate after inner inflatable（17）Bottom simultaneously produces upward effect Power, pass through adjustment and cylinder（12）Amount of force at the top of the pressure adjustable displacements of cylinders push rod of connected source of the gas.
- 4. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：Described hinge seat（14）Respectively symmetrically it is fixedly mounted on positioned at friction pulley（10）The main body substrate of the both sides of center of rotation （9）On.
- 5. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：The stop screw（18）Installing plate is arranged on by the way of threaded connection（17）Middle bottom, stop screw（18） Head upright downwards and and main body substrate（9）Top surface have several millimeters of gaps.
- 6. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：The friction pulley（10）It is made by polyurethane material.
- 7. a kind of fraction wheel drive device for gas suspension platform rotational positioning according to claim 1, its feature It is：Described main body substrate（9）For the stepped plate of right low left high.
- 8. a kind of friction wheel drive for gas suspension platform rotational positioning according to claim any one of 1-7 fills Put, it is characterised in that：The installing plate of described fraction wheel drive device（17）With gas suspension platform（19）When being fixedly linked, lead to Cross motor（1）Drive friction pulley（10）Rotate, then friction pulley（10）Stiction between ground drives and installing plate （17）The gas suspension platform being fixedly linked is around pivot（20）Rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720633370.8U CN206831094U (en) | 2017-06-02 | 2017-06-02 | A kind of fraction wheel drive device for gas suspension platform rotational positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720633370.8U CN206831094U (en) | 2017-06-02 | 2017-06-02 | A kind of fraction wheel drive device for gas suspension platform rotational positioning |
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| Publication Number | Publication Date |
|---|---|
| CN206831094U true CN206831094U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720633370.8U Active CN206831094U (en) | 2017-06-02 | 2017-06-02 | A kind of fraction wheel drive device for gas suspension platform rotational positioning |
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| CN (1) | CN206831094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483820A (en) * | 2020-10-29 | 2021-03-12 | 中国科学院西安光学精密机械研究所 | Shafting locking mechanism for optical measurement equipment |
| CN112849440A (en) * | 2021-01-04 | 2021-05-28 | 哈尔滨工业大学 | Friction type automatic braking system and method for single-shaft air floatation platform |
-
2017
- 2017-06-02 CN CN201720633370.8U patent/CN206831094U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483820A (en) * | 2020-10-29 | 2021-03-12 | 中国科学院西安光学精密机械研究所 | Shafting locking mechanism for optical measurement equipment |
| CN112483820B (en) * | 2020-10-29 | 2021-09-14 | 中国科学院西安光学精密机械研究所 | Shafting locking mechanism for optical measurement equipment |
| CN112849440A (en) * | 2021-01-04 | 2021-05-28 | 哈尔滨工业大学 | Friction type automatic braking system and method for single-shaft air floatation platform |
| CN112849440B (en) * | 2021-01-04 | 2021-11-19 | 哈尔滨工业大学 | Friction type automatic braking system and method for single-shaft air floatation platform |
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