CN107553432B - A kind of three-dimensional turntable of heavy duty balancing tilting moment - Google Patents
A kind of three-dimensional turntable of heavy duty balancing tilting moment Download PDFInfo
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- CN107553432B CN107553432B CN201710806709.4A CN201710806709A CN107553432B CN 107553432 B CN107553432 B CN 107553432B CN 201710806709 A CN201710806709 A CN 201710806709A CN 107553432 B CN107553432 B CN 107553432B
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Abstract
A kind of three-dimensional turntable of heavy duty balancing tilting moment, including load installation turntable, inverted U support, U-shaped bottom seat, balanced connecting rod, weight slide block, orientation rotating cylinder, turret base, it is main to realize the three-dimensional posture adjustment of ZYZ Eulerian angles.Wherein, upper position axis Z1 axis is constituted between load installation turntable and inverted U support, inverted U support and U-shaped bottom seat constitute pitch axis Y-axis, and orientation rotating cylinder and turret base constitute lower azimuth axis Z2 axis.Z1, Z2 axis can satisfy circumferential rotation type, and pitch axis Y-axis can be realized a wide range of pitch rotation.The counter weight device of balance tilting moment is installed, to balance the tilting moment generated due to pitching, to reduce the driving moment of pitch axis driving motor on pitch axis.The device has the characteristics that large carrying capacity, power-off overturn-preventing, Reliability of Mechanical System are high.
Description
Technical field
The present invention relates to a kind of posture adjustment platforms, especially the posture adjustment platform for Heavy Product test.
Background technique
During being directed to radar or airborne electronic equipment system testing, test product is generally required in work in different positions
State, so needing that such product can be carried out in the device or equipment of pose adjustment.It is big in Large Radar, aircraft avionics system etc.
Under type, heavily loaded test condition, testee is not only needed to can be realized comprehensive circumferential rotation type, but also the weight one of tested device
As it is larger.Traditional hydraulic-driven technology, higher cost and reliability, spatter property and maintainability substantially reduce.Existing skill
Art can not still propose preferable electronic solution for the multi-faceted device for adjusting posture of large-scale heavy duty.Patent
A kind of large-scale heavy duty rolling simulation stand is proposed in 201410587952.8, is proposed for heavy duty requirements and is assisted branch using carrying roller
The form of support to enhance the method for the bearing capacity of turntable, but the invention can only realize pitching and rolling two it is rotatably mounted
Degree, and cannot achieve azimuth axis circumferential rotation type.Patent 201210154506.9 proposes that use weight balancing system negative to balance
Carrying force, the method for reducing the driving moment of motor, the invention can be realized six free movements, but the angle of its pose adjustment
It cannot achieve circumferential rotation type.A kind of revolving platform of high precision overloading of 201310626116.1 invention of patent, have bearing capacity it is big,
Feature with high accuracy, but can only realize single dof mobility, it cannot achieve three-dimensional posture adjustment requirement.Patent 201220311413.8
With slewing bearing, realizes single-shaft-rotation movement, large carrying capacity, but since turntable bearing is relatively small, carry
The ability of tilting moment is poor, and the device cannot achieve three-dimensional posture adjustment movement.
Summary of the invention
The purpose of the present invention is to provide a kind of loads greatly, power off overturn-preventing, high the balancing of Reliability of Mechanical System is inclined
Cover the three-dimensional turntable of heavy duty of torque.The present invention is mainly based upon ZYZ Eulerian angles posture adjustment principle, proposes flat with pitching tilting moment
The three-dimensional turntable of the heavy duty of balance system, it is main special to meet the application demand of the 3 d pose adjustment equipment of heavy load, wide-angle
Point is the counter weight device that balance tilting moment is equipped on pitch axis, to balance the tilting moment generated due to pitching, to drop
The driving moment of low pitch axis driving motor.
The invention mainly comprises load installation turntable, inverted U support, U-shaped bottom seat, balanced connecting rod, weight slide block, orientation to turn
Cylinder and turret base.Wherein, load installation turntable is located at top and the first turns auxiliary shaft of inverted U support by the first revolute pair
Plane of the line perpendicular to load installation turntable；First revolute pair mainly includes turntable bearing A, is installed on load installation turntable
In the ring body of bottom, the upper mounting surface of turntable bearing A inner ring and the ring body inner bottom surface of load installation turntable are connected, on inverted U support
Portion is disc top plate, and the upper mounting surface of the disc top plate is fixed with mounting surface under the inner ring of turntable bearing A.Turntable bearing A
Inner ring on be machined with internal gear, which engages with symmetrically arranged two reduction gearing A, reduction gear shaft A pass through fall U
Type support circular top plate, and the driving mechanism output shaft fixed connection being connected in inverted U support circular top plate, to increase resist torque
Ability, preferably load installation turntable periphery and inverted U support circular top plate periphery between 4-8 pinch roller is installed
Mechanism, each pressing wheel mechanism include the first pinch roller, the second pinch roller, and all pressing wheel mechanisms are distributed in load installation turntable bottom
In ring body, the pedestal of the first pinch roller and the second pinch roller is connected with load installation turntable bottom ring body, the first pinch roller and inverted U branch
The upper plane of seat circular top plate compresses, and the lower plane of the second pinch roller and inverted U support circular top plate compresses, the first pinch roller and second
Pinch roller keeps pure rolling with inverted U support.First pinch roller, the second pinch roller and inverted U holder top disk pressing force pass through
Inclined-plane adjusts device adjustment.
Inverted U support is connected with U-shaped bottom seat by the second revolute pair, and the second revolute pair axis and the first revolute pair axis hang down
Direct join is located at the root of inverted U-shaped support and the top of U-shaped bottom seat close to load installation turntable, the second revolute pair axis.It should
The structure of second revolute pair are as follows: inverted U support has a circular ring shape top plate, set below top plate two it is perpendicular be connected and it is identical
Vertical plate, each vertical plate top respectively sets the upper through-hole an of coaxial line, the short axle of trunnion inside upper part parallel with U-shaped bottom seat two
Socket, two vertical plate lower part of inverted U support set two symmetrically arranged part ring gears, the axis of the part ring gear and second turn
Dynamic secondary coaxial, the reduction gearing B of part ring gear trunnion lower inside parallel with U-shaped bottom seat two is meshed, reduction gear shaft B
It is connected across trunnion with the driving mechanism B being located on the outside of trunnion, which is fixed on the bottom plate of U-shaped bottom seat.
The bottom plate of U-shaped bottom seat is movably fixed to the upper end of orientation rotating cylinder, and bottom plate is equipped with corresponding with orientation rotating cylinder inner hole
Through-hole.Orientation rotating cylinder is connected by third revolute pair with turret base, and the axis of third revolute pair and the second turns auxiliary shaft
Line is vertical.The outer ring turntable bearing B of third revolute pair and orientation rotating cylinder are connected, and turntable bearing B inner ring and turret base are connected, institute
It states and is machined with external tooth on the outer ring turntable bearing B, engaged with the reduction gearing C that two are arranged symmetrically, two reduction gear shaft C difference
With the output shaft fixed connection of two groups of driving mechanism C, driving mechanism C and turret base are connected.
Inverted U support lower part is connected with the upper end of balanced connecting rod by the 4th revolute pair, and the axis of the 4th revolute pair is flat
Row is in the second revolute pair axis, and the structure of the 4th revolute pair is: each vertical plate lower part of inverted U support is respectively set under a coaxial line
Through-hole, lower through-hole inside respectively set the short axle B an of vertical wall, respectively insert with two through-holes on balanced connecting rod fork-shaped top
It connects, balanced connecting rod lower part is connect by the 5th revolute pair with weight slide block and the axis of the 5th revolute pair is parallel to the 4th revolute pair
Axis, the balanced connecting rod lower through-hole of the 5th revolute pair and the through-hole on weight slide block top are socketed by short axle.Balanced connecting rod is worn
Corresponding through-hole lower part on U-shaped base plate is crossed to be placed in together with weight slide block in orientation rotating cylinder.Weight slide block passes through prismatic pair
It is connect with orientation rotating cylinder, prismatic pair is located at the inside of orientation rotating cylinder, and prismatic pair is oriented parallel to third revolute pair axis, i.e., outer
Shape is that the orientation rotating cylinder of cylinder is inserted in hollow turret base, and the side inside orientation rotating cylinder has guide rail, and weight slide block exists
It is slided on guide rail.4-8 supporting roller mechanism is equipped between orientation cylinder bottom and turret base bottom, each supporting roller mechanism is mainly wrapped
Side pinch roller and bottom supporting roller are included, the supporting roller mechanism is evenly arranged and two-by-two by third revolute pair axisymmetrical, side pressure
Wheel is mounted on pinch roller carrying roller pedestal with bottom supporting roller, and pinch roller carrying roller pedestal is fixed with turret base, side pinch roller and orientation
The exterior arc surface of rotating cylinder compresses, and the bottom surface of bottom supporting roller and orientation rotating cylinder compresses, side pinch roller pivot center and third revolute pair
Axis is parallel, and bottom supporting roller pivot center intersects with third revolute pair axis, side pinch roller and bottom supporting roller with orientation rotating cylinder
Keep pure rolling.
The course of work and principle of the invention approximately as:
The top of inverted U support is connect by the first revolute pair with load installation turntable, and the first revolute pair is known as upper position
Axis Z1 axis, Z1 axis may be implemented circumferential rotation type, and rotation direction is always perpendicular to the mounting plane of load installation turntable, and second
Revolute pair is known as pitch axis Y-axis, and the axis is vertical with Z1 axis always.Orientation rotating cylinder is connect by third revolute pair with turret base,
The axis of third revolute pair is perpendicular to the second revolute pair.Third revolute pair is known as lower azimuth axis Z2 axis.Orientation rotating cylinder and turntable bottom
After seat turns an angle α around lower azimuth axis Z2 axis, inverted U support is with respect to U-shaped bottom seat around the rotation of pitch axis Y-axis on this basis
β, and load installs turntable relative to inverted U support around the upper position axis Z1 axis rotation angle γ, so the tune of the device on this basis
Appearance principle is the posture adjustment of ZYZ Eulerian angles, and load installation turntable is Rotz (α) Roty (β) relative to the final carriage of turret base
Rotz (γ), as shown in Figure 1.After pitch axis Y-axis rotates β angle, since load height of center of mass is higher, it can generate and biggish incline
Torque is covered, which not only increases the driving moment of pitch axis, and it is unstable to also result in mechanical system.Incline to balance this
Torque is covered, the balancing device that can balance pitching tilting moment, inverted U support, U-shaped bottom seat, balance are installed on pitch axis
Connecting rod, weight slide block constitute a slider-crank mechanism.The weight of weight slide block is adjustable, for different load weight and
Centroid position setting is optimal to match weight, can prevent pitch axis after a loss of power while reducing pitching driving mechanism driving moment
Or pitch axis power device when breaking down mechanical system topple over and cause the accident, as shown in Figure 3,4.For the carrying for improving system
Ability and resistance to capsizing add multiple groups on the basis of traditional turntable bearing and roll pressing device, and pressing force passes through tiltedly
Face adjusts device adjustment, as shown in Figure 3,4.
Driving principle of the invention are as follows: upper position axis Z1 axis: the driving mechanism A being arranged symmetrically by two groups drives and slows down
Gear A, reduction gearing A are rotated by driving turntable bearing A to realize between load installation turntable and inverted U support.Pitch axis Y
Axis: the driving mechanism B being arranged symmetrically by two groups drives reduction gearing B, and reduction gearing B is by driving part ring gear to realize
It is rotated between inverted U support and U-shaped bottom seat.Lower orientation Z2 axis: two groups of driving mechanism C being arranged symmetrically drive reduction gearing C,
Reduction gearing C is by driving turntable bearing B to realize the rotation between orientation rotating cylinder and turret base.
The invention has the following advantages over the prior art:
1, large carrying capacity, Mechanical Reliability are high.Mechanical structure and joint assume responsibility for the gravity of load, crank block gravity
Balance system can balance the tilting moment generated by pitching, reduce the torque of driving motor and transmission system, while allow machine
Tool system cut-off overturn-preventing.Periphery pinch roller system and bottom supporting roller system also improve the ability of mechanical system resistance to tipping moment.
2, pitch axis Y-axis slewing area is big, upper and lower azimuth axis Z1, Z2 axis allows circumferential rotation type, and pitch axis passes through half gear
Transmission, slewing area is also larger, reachable ± 60 ° general.
Detailed description of the invention
Fig. 1 is the three-dimensional simplified schematic diagram of the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is A-A cross-sectional view solid simplified schematic diagram (wherein turntable bearing A8, turntable bearing B12, driving mechanism in Fig. 2
C13, driving mechanism B9, reduction gearing C11, reduction gearing B14 are not splitted).
Fig. 4 is B-B cross-sectional view solid simplified schematic diagram in Fig. 2 (wherein driving mechanism A4, part ring gear 5 are not splitted).
Fig. 5 is the partial enlargement simplified schematic diagram of D in Fig. 3.
Fig. 6 is the partial enlargement simplified schematic diagram of C in Fig. 3.
Fig. 7 is the shape simplified schematic diagram of present invention load installation turntable 1.
Fig. 8 is the shape simplified schematic diagram of inverted U support 2 of the present invention.
Fig. 9 is the shape simplified schematic diagram of U-shaped bottom seat 3 of the present invention.
Figure 10 is the shape simplified schematic diagram of orientation rotating cylinder 6 of the present invention.
Figure 11 is the shape simplified schematic diagram of turret base 10 of the present invention.
Figure 12 is the shape simplified schematic diagram of balanced connecting rod 7 of the present invention.
Figure 13 is the shape simplified schematic diagram of weight slide block 15 of the present invention.
In figure:
1, load installation turntable, 2, inverted U support, 3, U-shaped bottom seat, 4, driving mechanism B, 5, part ring gear, 6, orientation
Rotating cylinder, 7, balanced connecting rod, 8, turntable bearing B, 9, driving mechanism C, 10, turret base, 11, reduction gearing A, 12, turntable bearing
A, 13, driving mechanism A, 14, reduction gear shaft A, 15, reduction gearing C, 16, reduction gear shaft C, 17, weight slide block, 18, short axle
A, 19, short axle B, 20, reduction gearing B, 21, reduction gear shaft B, 22, short axle C, 23, side pinch roller, 24, pinch roller carrying roller pedestal,
25, bottom supporting roller, the 26, first pinch roller, the 27, second pinch roller.
Specific embodiment
In the simplified schematic diagram of Fig. 1, Fig. 2, Fig. 3 and the heavy duty three-dimensional turntable shown in Fig. 4 for balancing tilting moment, it is tested
Object is installed on the upper plane of load installation turntable 1, as shown in fig. 7, turntable bearing A12 is installed on load installation turntable bottom
In portion's ring body, the upper mounting surface of inner ring and the ring body inner bottom surface of load installation turntable are connected, inverted U support 2 as shown in Figure 8
The upper mounting surface of disc top plate fixed with mounting surface under the inner ring of turntable bearing A12.It is machined on the inner ring of turntable bearing A
Internal gear, the internal gear are engaged with symmetrically arranged two reduction gearing A11, and reduction gear shaft A14 is across the circle of inverted U support 2
Shape top plate, and the driving mechanism A13 output shaft fixed connection being connected in inverted U support circular top plate, as shown in Figure 3, Figure 4.Negative
It carries and 4-8 pressing wheel mechanism, each wheel press is installed between the periphery of installation turntable and the periphery of the circular top plate of inverted U support
Structure includes the first pinch roller 26, the second pinch roller 27, and all pressing wheel mechanisms are distributed in the ring body of load installation turntable bottom, and first
The pedestal of pinch roller and the second pinch roller is connected with load installation turntable bottom ring body, the first pinch roller and inverted U support circular top plate
Upper plane compress, the lower plane of the second pinch roller and inverted U support circular top plate compresses, and the first pinch roller and the second pinch roller are and
U-shaped support keeps pure rolling.The pressing force of first pinch roller, the second pinch roller and inverted U holder top disk is adjusted by inclined-plane and is filled
Adjustment is set, as shown in Figure 6.
Inverted U support 2 is connected with U-shaped bottom seat 3 by the second revolute pair, and inverted U support 2 has a circular ring shape top plate, under
Face sets two perpendicular connected and identical vertical plates, and each vertical plate top respectively sets the upper through-hole an of coaxial line, such as Fig. 9 institute
The short axle A18 for the trunnion inside upper part parallel with 3 liang of U-shaped bottom seat shown is socketed, the second revolute pair axis and the first revolute pair axis
Vertical and close load installation turntable.Two vertical plate lower part of inverted U support sets two symmetrical part ring gears 5, the part internal tooth
The axis of circle is coaxial with the second revolute pair, the reduction gearing 20 of part ring gear trunnion lower inside parallel with U-shaped bottom seat two
It is meshed, reduction gear shaft B21 passes through trunnion and is connected with the driving mechanism B4 being located on the outside of trunnion, which is fixed on
On the bottom plate of U-shaped bottom seat.The bottom plate is bolted on the upper end of orientation rotating cylinder 6 as shown in Figure 10, and bottom plate be equipped with
The corresponding through-hole of orientation rotating cylinder inner hole.Orientation rotating cylinder is connected by third revolute pair with turret base 10 as shown in figure 11, and
The axis of third revolute pair is vertical with the second revolute pair axis.The outer ring turntable bearing B8 of third revolute pair and orientation rotating cylinder 6 are solid
Even, turntable bearing B8 inner ring and turret base 10 are connected, and the turntable bearing B is machined with external tooth on outer ring, with two symmetrical cloth
The reduction gearing C15 engagement set, two reduction gear shaft C16 output shaft fixed connection with two groups of driving mechanism C9 respectively, driving machine
Structure C and turret base are connected, as shown in Figure 3, Figure 4.
2 lower part of inverted U support is connected with the upper end of balanced connecting rod 7 as shown in figure 12 by the 4th revolute pair, and the 4th
The axis of revolute pair is parallel to the second revolute pair axis, and the structure of the 4th revolute pair is: each vertical plate lower part of inverted U support 2 is each
If the lower through-hole of a coaxial line, the short axle B19 an of vertical wall is respectively set on the inside of the lower through-hole, is respectively pitched with balanced connecting rod 7
Two through-hole grafting on shape top, 7 lower part of balanced connecting rod are connect by the 5th revolute pair with weight slide block 17 as shown in fig. 13 that
And the 5th the axis of revolute pair be parallel to the 4th revolute pair axis, the through-hole on balanced connecting rod lower through-hole and weight slide block top is logical
Cross short axle C22 socket.Balanced connecting rod 7 passes through the through-hole lower part on U-shaped base plate and is placed in orientation turn together with weight slide block 17
In cylinder 6.Weight slide block 17 is connect by prismatic pair with orientation rotating cylinder, and prismatic pair is located at the inside of orientation rotating cylinder, the side of prismatic pair
To third revolute pair axis is parallel to, i.e. shape is that the orientation rotating cylinder of cylinder is inserted in hollow turret base, in orientation rotating cylinder 6
The side in portion is directly machined with V-type rail sliding slot, and the V-type sliding block of 17 lateral projections of weight slide block slides on guide rail, such as Fig. 3,
Shown in Fig. 4.4-8 supporting roller mechanism is equipped between 6 bottom of orientation rotating cylinder and turret base bottom, each supporting roller mechanism mainly includes
Side pinch roller 23 and bottom supporting roller 25, supporting roller mechanism are evenly arranged and two-by-two by third revolute pair axisymmetrical, side pinch rollers
23 are mounted on pinch roller carrying roller pedestal 24 with bottom supporting roller 25, and pinch roller carrying roller pedestal is fixed with turret base, side pinch roller 23
Compressed with the exterior arc surface of orientation rotating cylinder 6, the bottom surface of bottom supporting roller 25 and orientation rotating cylinder 6 compresses, side pinch roller pivot center with
Third revolute pair axis is parallel, and bottom supporting roller pivot center intersects with third revolute pair axis, and side pinch roller and bottom supporting roller are equal
Pure rolling is kept with orientation rotating cylinder, as shown in Figure 5.
Claims (8)
1. the three-dimensional turntable of heavy duty that one kind can balance tilting moment, it is characterised in that: including load installation turntable, inverted U support,
U-shaped bottom seat, balanced connecting rod, weight slide block, orientation rotating cylinder and turret base；Load installation turntable is located at down by the first revolute pair
The top of U-shaped support and the first revolute pair axis install plane of rotor disc perpendicular to load；Inverted U support and U-shaped bottom seat pass through the
Two revolute pairs are connected, and the second revolute pair axis is vertical with the first revolute pair axis and close to load installation turntable, the second revolute pair
Axis is respectively arranged the root in inverted U support and the top of U-shaped bottom seat；U-shaped bottom seat is movably fixed to the upper end of orientation rotating cylinder,
Orientation rotating cylinder is connect by third revolute pair with turret base, and the axis of third revolute pair is perpendicular to the second revolute pair；Inverted U branch
Seat bottom is connected with the upper end of balanced connecting rod by the 4th revolute pair, and the axis of the 4th revolute pair is parallel to the second turns auxiliary shaft
Line；The lower part of balanced connecting rod is connect by the 5th revolute pair with weight slide block and the axis of the 5th revolute pair is parallel to the 4th rotation
Secondary axis；Weight slide block is connect by prismatic pair with orientation rotating cylinder, and prismatic pair is located at the inside of orientation rotating cylinder, the direction of prismatic pair
It is parallel to third revolute pair axis.
2. the heavy duty three-dimensional turntable according to claim 1 for balancing tilting moment, it is characterised in that: the second revolute pair
Structure are as follows: inverted U support has a circular top plate, and two perpendicular connected and identical vertical plates, Mei Geli are set below top plate
Plate top respectively sets the upper through-hole an of coaxial line, the short axle socket of trunnion inside upper part parallel with U-shaped bottom seat two, inverted U branch
Two vertical plate lower parts of seat set two symmetrically arranged part ring gears, which is arc-shaped, arc axis and second turn
Dynamic secondary coaxial, the tooth of the reduction gearing B of the tooth of part ring gear trunnion lower inside parallel with U-shaped bottom seat two is meshed, and subtracts
Fast gear shaft B passes through trunnion and is connected with the driving mechanism B being located on the outside of trunnion, and driving mechanism B is fixed on the bottom plate of U-shaped bottom seat
On.
3. the heavy duty three-dimensional turntable according to claim 1 for balancing tilting moment, it is characterised in that: third revolute pair
The outer ring turntable bearing B and orientation rotating cylinder are connected, and turntable bearing B inner ring and turret base are connected, and add on the outer ring the turntable bearing B
Work has external tooth, engages with the reduction gearing C that two are arranged symmetrically, and two reduction gear shaft C are defeated with two groups of driving mechanism C respectively
Shaft is connected, and driving mechanism C and turret base are connected.
4. the heavy duty three-dimensional turntable according to claim 1 for balancing tilting moment, it is characterised in that: the 4th revolute pair
In, each vertical plate lower part of inverted U support respectively sets the lower through-hole of a coaxial line, respectively sets a vertical wall on the inside of the lower through-hole
Short axle B, respectively with two through-hole grafting on balanced connecting rod fork-shaped top.
5. the heavy duty three-dimensional turntable according to claim 1 for balancing tilting moment, it is characterised in that: in the 5th revolute pair
The through-hole on balanced connecting rod lower through-hole and weight slide block top is socketed by short axle, and balanced connecting rod passes through right on U-shaped base plate
The through-hole lower part answered is placed in orientation rotating cylinder together with weight slide block.
6. the heavy duty three-dimensional turntable according to claim 1 for balancing tilting moment, it is characterised in that: shape in prismatic pair
It is inserted in hollow turret base for the orientation rotating cylinder of cylinder, the side inside orientation rotating cylinder has guide rail.
7. the heavy duty three-dimensional turntable according to claim 2 for balancing tilting moment, it is characterised in that: turn in load installation
4-8 pressing wheel mechanism be installed, each pressing wheel mechanism includes the between the periphery of the circular top plate on the periphery and inverted U support of disk
One pinch roller, the second pinch roller, all pressing wheel mechanisms are distributed in the ring body of load installation turntable bottom, the first pinch roller and the second pressure
The pedestal of wheel is connected with load installation turntable bottom ring body, and the upper plane of the first pinch roller and inverted U support circular top plate compresses,
Second pinch roller and the lower plane of inverted U support circular top plate compress, and the first pinch roller keeps pure with inverted U support with the second pinch roller
It rolls, the pressing force of the first pinch roller, the second pinch roller and inverted U support circular top plate adjusts device adjustment by inclined-plane.
8. the heavy duty three-dimensional turntable according to claim 6 for balancing tilting moment, it is characterised in that: orientation cylinder bottom
Supporting roller mechanism is installed between turret base bottom, each supporting roller mechanism includes side pinch roller and bottom supporting roller, side pinch roller
It is compressed with the exterior arc surface of orientation rotating cylinder, the bottom surface of bottom supporting roller and orientation rotating cylinder compresses.
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| CN201710806709.4A CN107553432B (en) | 2017-09-08 | 2017-09-08 | A kind of three-dimensional turntable of heavy duty balancing tilting moment |
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| CN201710806709.4A CN107553432B (en) | 2017-09-08 | 2017-09-08 | A kind of three-dimensional turntable of heavy duty balancing tilting moment |
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