CN115045937B - Mechanical limiting mechanism and method for +/-360 DEG turntable - Google Patents
Mechanical limiting mechanism and method for +/-360 DEG turntable Download PDFInfo
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- CN115045937B CN115045937B CN202210733578.2A CN202210733578A CN115045937B CN 115045937 B CN115045937 B CN 115045937B CN 202210733578 A CN202210733578 A CN 202210733578A CN 115045937 B CN115045937 B CN 115045937B
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- 238000000034 method Methods 0.000 title claims description 9
- 230000002441 reversible effect Effects 0.000 claims abstract description 6
- 230000007306 turnover Effects 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D71/00—Mechanisms for bringing members to rest in a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/16—Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention discloses a mechanical limiting mechanism of a +/-360-degree rotary table, which comprises a base, a rotatable limiting ring and a rotary body which are coaxially connected in turn from bottom to top, wherein the rotatable limiting ring is positioned between the base and the rotary body, a pin shaft is fixed on the rotatable limiting ring, and the axis of the pin shaft is radially arranged along the rotatable limiting ring; the overturning block is rotationally connected with the pin shaft and can overturn by taking the pin shaft as a fulcrum; the two positioning blocks are fixed on the rotatable limiting ring and positioned at the left side and the right side of the overturning block and are used for limiting the overturning angle of the overturning block; a first limit stop is fixedly arranged on the outer side of the rotating body; and a second limit stop is fixedly arranged on the outer side of the base. The mechanical limiting mechanism of the +/-360-degree turntable has the advantages of simple structure, no fatigue wearing parts, reliable limiting, small axial size and capability of realizing forward and reverse large-angle rotation.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a mechanical limiting mechanism and method for a +/-360 DEG rotary table.
Background
The reciprocating rotary turntable frequently adopted in the industries of communication, radar and the like needs a low-cost turntable mechanical limiting mechanism with a limit rotation angle range reaching +/-360 degrees, and the mechanism has the advantages of high environment adaptability and high reliability, and plays a reliable protection role on connecting cables, optical cables and liquid cooling pipelines at the limit rotation angle position of the turntable, so that the safety of the system is ensured. Patent CN 111692482A discloses a rotary table mechanical limiting mechanism with a limit angle range reaching +/-360 degrees, which consists of a shifting fork, a V-shaped shifting block, a tension spring, a rotating shaft, a seat body, an adjusting screw, a pressure spring, a positioning steel ball and other components. The mechanical limiting mechanism of the +/-360-degree turntable is ingenious in design and simple in structure. However, there is also a problem that the tension spring may be fatigued and broken due to the large axial dimension. Therefore, the continuous exploration of the mechanical limit mechanism of the +/-360-degree turntable with reliable design performance still has practical significance.
Disclosure of Invention
Aiming at the technical problems, the invention provides a mechanical limiting mechanism of a +/-360-degree rotary table, which has the advantages of simple structure, no fatigue wearing parts, reliable limiting, small axial size and capability of realizing forward and reverse large-angle rotation.
In order to achieve the technical purpose, the invention adopts the following technical means:
a ± 360 ° turntable mechanical stop mechanism comprising:
the base, the rotatable limiting ring and the rotating body are coaxially and rotatably connected in sequence from bottom to top, wherein the rotatable limiting ring is positioned between the base and the rotating body,
the pin shaft is fixed on the rotatable limiting ring, and the axis of the pin shaft is radially arranged along the rotatable limiting ring;
the overturning block is rotationally connected with the pin shaft and can overturn by taking the pin shaft as a fulcrum;
the two positioning blocks are fixed on the rotatable limiting ring and positioned at the left side and the right side of the overturning block, and positioning surfaces are arranged on the positioning blocks and used for limiting the overturning angle of the overturning block;
the outer side of the rotating body is fixedly provided with a first limit stop, and when the rotating body rotates relative to the rotatable limit ring, the first limit stop can be in abutting connection with the overturning block so as to limit the corner limit between the rotatable limit ring and the rotating body;
the second limit stop is fixedly arranged on the outer side of the base, and when the base rotates relative to the rotatable limit ring, the second limit stop can be in abutting connection with the overturning block so as to limit the corner limit between the rotatable limit ring and the base.
The two positioning blocks are provided with wedge-shaped positioning faces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the first limit stop is isosceles triangle in shape, and the triangular tip of the first limit stop is downward;
the corner limit between the rotatable limiting ring and the rotating body is 360 degrees.
The two positioning blocks are provided with wedge-shaped positioning faces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the second limit stop is isosceles triangle in shape, and the triangular tip of the second limit stop is upward;
the corner limit between the rotatable limiting ring and the base is 360 degrees.
An end plate is fixedly arranged between the outer sides of the two positioning blocks, and a connecting hole for the other end of the pin shaft to be rotationally connected is formed in the end plate.
The base, the rotatable limiting ring and the rotator are all of a rotator structure.
Rolling bodies for reducing the rotation resistance between the rotatable limiting ring and the base are circumferentially arranged between the base and the rotatable limiting ring.
The outer sides of the rotatable limiting rings positioned in the middle of the three are fixedly provided with a first positioning block and a second positioning block which are arranged symmetrically left and right;
the upper side of the first positioning block is provided with a first positioning surface, and the lower side of the first positioning block is provided with a second positioning surface;
the upper side of the second positioning block is provided with a third positioning surface, and the lower side of the second positioning block is provided with a fourth positioning surface;
the left side of the first limit stop is provided with a first limit surface, and the right side of the first limit stop is provided with a second limit surface;
two rotation limit positions are arranged between the rotatable limit ring and the rotating body, namely a first limit position and a second limit position,
when the turnover limiting plate is positioned at the first limit position, the turnover limiting plate is in abutting connection with a second limiting surface on the first limiting stop block and a third positioning surface on the second positioning block;
when the turnover limiting plate is positioned at the second limiting position, the turnover limiting plate is in abutting connection with a first limiting surface on the first limiting stop and a first positioning surface on the first positioning block;
the left side of the second limit stop is provided with a third limit surface, and the right side of the second limit stop is provided with a fourth limit surface;
two rotation limit positions are arranged between the rotatable limit ring and the base, namely a third limit position and a fourth limit position,
when the turnover limiting plate is positioned at the third limit position, the turnover limiting plate is in abutting connection with a third limiting surface on the second limiting stop block and a second positioning surface on the first positioning block;
when the turnover limiting plate is positioned at the fourth limiting position, the turnover limiting plate is in abutting connection with a fourth limiting surface on the second limiting stop block and a fourth positioning surface on the second positioning block.
The two positioning blocks are provided with wedge-shaped positioning faces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the first limit stop is isosceles triangle in shape, and the triangular tip of the first limit stop is downward;
the horizontal rotation angle between the first limit position and the second limit position is 360 degrees.
The two positioning blocks are provided with wedge-shaped positioning faces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the second limit stop is isosceles triangle in shape, and the triangular tip of the second limit stop is upward;
the horizontal rotation angle between the first limit position and the fourth limit position is 720 degrees.
The invention further discloses a corner limiting method based on the +/-360-degree rotary table mechanical limiting mechanism, when the rotary body rotates clockwise relative to the rotatable limiting ring until the rotatable limiting ring and the rotary body are positioned at a first limiting position, a second limiting surface on the first limiting stop block, a reversible limiting plate and a third positioning surface on the second positioning block are in abutting connection;
continuing to rotate the rotating body clockwise, at the moment, the first limit surface of the first limit stop at the outer side of the rotating body is attached to the right limit surface of the overturning block, the rotating body and the rotatable limit ring rotate clockwise together until the left limit surface of the overturning block is attached to the fourth limit surface of the second limit stop, and the rotation is stopped, wherein the clockwise limit position of the rotating body is the clockwise limit position;
the rotating body is rotated anticlockwise in the opposite direction, and the process is the same as the above.
Advantageous effects
The mechanical limiting mechanism of the +/-360-degree turntable adopts the combination of a rotatable limiting ring and a turnover block, and has a simple structure; the device has no fatigue wearing parts and reliable limit; the axial dimension is small, and the limit requirement of the rotary table with large forward and reverse angles can be met.
The invention can process the wedge-shaped locating surface of the locating block into different angles so as to obtain the limit requirements of the turntable with different forward and reverse angles, and the locating reliability is high because the overturning block is matched with the locating surface. Third, the mechanical limit mechanism of the +/-360 DEG turntable has a large rotation angle range, and the limit rotation angle range can reach +/-360 DEG, namely the limit rotation angle range can reach 720 deg. Fourth, when the material of the overturning block 23 is elastic, the mechanical limiting mechanism of the +/-360 DEG turntable has a buffering function when the mechanical limiting mechanism is rotated to the limit position, so that the impact can be avoided.
Drawings
FIG. 1 is a schematic structural view of a mechanical limit mechanism of a + -360 DEG turntable of the present invention;
FIG. 2 is a schematic structural view of a mechanical limit mechanism of a + -360 DEG turntable when a rotating body of the invention rotates counterclockwise 360 DEG;
FIG. 3 is a schematic view of the mechanical limit mechanism of the + -360 DEG turntable when the rotating body of the invention rotates clockwise 360 DEG;
10, a base; 11. a second limit stop; 11-1, a third limit surface of the second limit stop; 11-2, a fourth limit surface of the second limit stop;
20. a rotatable limit ring; 21. a first positioning block; 21-1, a positioning surface on the first positioning block; 21-2, a positioning surface under the first positioning block; 22. a second positioning block; 22-1, a locating surface on the second locating block; 22-2, a positioning surface under the second positioning block; 23. a turnover block; 23-1, turning over the left limit surface of the block; 23-2, turning over the right limit surface of the block; 24. a pin shaft; 25. an end plate; 26. a rolling element;
30. a rotating body; 31. a first limit stop; 31-1, a first limit surface of the first limit stop; 31-2, a second limit surface of the first limit stop.
Description of the embodiments
The technical scheme of the invention is further described in detail below with reference to the attached drawings and specific embodiments.
As shown in fig. 1 to 3, the present embodiment is a mechanical limit mechanism for a ±360° turntable, which is composed of a base 10, a rotatable limit ring 20, a rotating body 30, and a turning block 23.
The base 10, the rotatable limiting ring 20 and the rotating body 30 are all of a rotating body structure, and three parts are coaxially arranged in a rotating way.
The rotatable stop collar 20 is located between the base 10 and the rotator 30.
The rotatable stop collar 20 is rotatably disposed coaxially with the base 10, and rolling bodies 26 disposed circumferentially along the base 10 may be employed to reduce rotational resistance between the rotatable stop collar 20 and the base 10.
A first positioning block 21 and a second positioning block 22 are fixedly arranged on one side of the rotatable limiting ring 20. The first positioning block 21 and the second positioning block 22 are provided with wedge-shaped positioning surfaces, and wedge-shaped tips of the first positioning block 21 and the second positioning block 22 are opposite.
The pin shaft 24 is radially and fixedly arranged on the outer side of the rotatable limiting ring 20 and positioned in the middle of the first positioning block 21 and the second positioning block 22, and the outer sides of the first positioning block 21 and the second positioning block 22 are fixedly provided with end plates 25, and the end plates 25 are used for improving rigidity of the pin shaft 24.
A turnover block 23 is arranged between the first positioning block 21 and the second positioning block 22, and the turnover block 23 can turn left and right around a pin shaft 24.
As shown in fig. 3, when the turning block 23 turns left, the left limit surface 23-1 of the turning block is attached to the upper locating surface 21-1 of the first locating block, and at the same time, the right limit surface 23-2 of the turning block is attached to the lower locating surface 22-2 of the second locating block.
When the turning block 23 turns right as shown in fig. 1, the left limit surface 23-1 of the turning block is attached to the lower positioning surface 21-2 of the first positioning block. Meanwhile, the right limiting surface 23-2 of the overturning block is attached to the positioning surface 22-1 on the second positioning block.
A second limit stop 11 having an isosceles triangle shape is fixedly provided on the outer side of the base 10, and the triangular tip of the second limit stop 11 is directed upward.
A first limit stop 31 having an isosceles triangle shape is fixed to the outer side of the rotating body 30. The triangular tip of the first limit stop 31 is directed downward.
In the position shown in fig. 1, the rotator 30 is in a counterclockwise limit position, and at this time, the flipping block 23 is flipped right. The right limit surface 23-2 of the overturning block is attached to the third limit surface 11-1 of the second limit stop at the outer side of the base 10; the left limit surface 23-1 of the turning block is attached to the second limit surface 31-2 of the first limit stopper on the outer side of the rotating body 30.
As shown in fig. 2, the rotating body 30 is rotated clockwise, and when the rotating body 30 is rotated 360 degrees, the tip of the first limit stop 31 on the outer side of the rotating body 30 is opposite to the tip of the second limit stop 11 on the outer side of the base 10.
As shown in fig. 3, the rotation of the rotating body 30 continues clockwise, at this time, the first limiting surface 31-1 of the first limit stopper on the outer side of the rotating body 30 is abutted against the turning block right limiting surface 23-2, the rotating body 30 rotates clockwise together with the rotatable limit ring 20 until the turning block left limiting surface 23-1 is abutted against the fourth limiting surface 11-2 of the second limit stopper, and the rotation stops, at this time, the rotating body 30 rotates clockwise by 720 degrees in total. This is the clockwise limit position of the rotating body 30.
The rotation body 30 is rotated counterclockwise in the opposite direction, and the same procedure is performed. .
Claims (10)
1. A ± 360 ° turntable mechanical stop mechanism, comprising:
the base (10), the rotatable limiting ring (20) and the rotating body (30) are coaxially and rotatably connected in sequence from bottom to top, wherein the rotatable limiting ring (20) is positioned between the base and the rotating body,
the pin shaft is fixed on the rotatable limiting ring, and the axis of the pin shaft is radially arranged along the rotatable limiting ring;
the overturning block is rotationally connected with the pin shaft and can overturn by taking the pin shaft as a fulcrum;
the two positioning blocks are fixed on the rotatable limiting ring and positioned at the left side and the right side of the overturning block, and positioning surfaces are arranged on the positioning blocks and used for limiting the overturning angle of the overturning block;
a first limit stop (31) is fixedly arranged on the outer side of the rotating body, and when the rotating body rotates relative to the rotatable limit ring, the first limit stop can be in abutting connection with the overturning block so as to limit the corner limit between the rotatable limit ring and the rotating body;
the base outside is fixed to be set up second limit stop (11), when the base is relative rotatable spacing ring rotates, second limit stop can with the upset piece conflict is connected to inject rotatable spacing ring and the corner limit between the base.
2. The mechanical stop mechanism of the +/-360 DEG turntable of claim 1, wherein both positioning blocks have wedge-shaped positioning surfaces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the first limit stop is isosceles triangle in shape, and the triangular tip of the first limit stop is downward;
the corner limit between the rotatable limiting ring and the rotating body is 360 degrees.
3. The mechanical stop mechanism of the +/-360 DEG turntable of claim 1, wherein both positioning blocks have wedge-shaped positioning surfaces, and wedge-shaped tips of the two positioning blocks are oppositely arranged;
the second limit stop is isosceles triangle in shape, and the triangular tip of the second limit stop is upward;
the corner limit between the rotatable limiting ring and the base is 360 degrees.
4. The +/-360 DEG rotary table mechanical limiting mechanism according to claim 1, wherein an end plate is fixedly arranged between the outer sides of the two positioning blocks, and a connecting hole for the other end of the pin shaft to be rotationally connected is formed in the end plate.
5. The mechanical stop mechanism of claim 1, wherein the base, rotatable stop collar and rotator are all of a solid of revolution structure.
6. The mechanical stop mechanism of the ± 360 ° turntable of claim 1, wherein rolling bodies are circumferentially disposed between the base and the rotatable stop ring to reduce rotational resistance between the rotatable stop ring and the base.
7. The +/-360 DEG rotary table mechanical limiting mechanism according to claim 1, wherein a first positioning block (21) and a second positioning block (22) which are arranged symmetrically are fixedly arranged on the outer side of a rotatable limiting ring positioned in the middle of the three;
the upper side of the first positioning block (21) is provided with a first positioning surface, and the lower side is provided with a second positioning surface;
the upper side of the second positioning block (22) is provided with a third positioning surface, and the lower side is provided with a fourth positioning surface;
the left side of the first limit stop is provided with a first limit surface, and the right side of the first limit stop is provided with a second limit surface;
two rotation limit positions are arranged between the rotatable limit ring and the rotating body, namely a first limit position and a second limit position,
when the turnover limiting plate is positioned at the first limit position, the turnover limiting plate is in abutting connection with a second limiting surface on the first limiting stop block and a third positioning surface on the second positioning block;
when the turnover limiting plate is positioned at the second limiting position, the turnover limiting plate is in abutting connection with a first limiting surface on the first limiting stop and a first positioning surface on the first positioning block;
the left side of the second limit stop is provided with a third limit surface, and the right side of the second limit stop is provided with a fourth limit surface;
two rotation limit positions are arranged between the rotatable limit ring and the base, namely a third limit position and a fourth limit position,
when the turnover limiting plate is positioned at the third limit position, the turnover limiting plate is in abutting connection with a third limiting surface on the second limiting stop block and a second positioning surface on the first positioning block;
when the turnover limiting plate is positioned at the fourth limiting position, the turnover limiting plate is in abutting connection with a fourth limiting surface on the second limiting stop block and a fourth positioning surface on the second positioning block.
8. The mechanical stop mechanism of the +/-360 ° turntable of claim 7, wherein both positioning blocks have wedge-shaped positioning faces and wedge-shaped tips of both positioning blocks are oppositely arranged;
the first limit stop is isosceles triangle in shape, and the triangular tip of the first limit stop is downward;
the horizontal rotation angle between the first limit position and the second limit position is 360 degrees.
9. The mechanical stop mechanism of the +/-360 ° turntable of claim 7, wherein both positioning blocks have wedge-shaped positioning faces and wedge-shaped tips of both positioning blocks are oppositely arranged;
the second limit stop is isosceles triangle in shape, and the triangular tip of the second limit stop is upward;
the horizontal rotation angle between the first limit position and the fourth limit position is 720 degrees.
10. The corner limiting method based on the +/-360-degree rotary table mechanical limiting mechanism is characterized in that when a rotary body rotates clockwise relative to the rotatable limiting ring until the rotatable limiting ring and the rotary body are in a first limiting position, a second limiting surface on the first limiting stop block, a reversible limiting plate and a third positioning surface on the second positioning block are in abutting connection;
continuing to rotate the rotating body clockwise, wherein a first limit surface (31-1) of a first limit stop at the outer side of the rotating body is attached to a right limit surface (23-2) of the overturning block, the rotating body and the rotatable limit ring rotate clockwise together until a left limit surface (23-1) of the overturning block is attached to a fourth limit surface (11-2) of a second limit stop, and the rotating body stops rotating, so that the rotating body is at a clockwise limit position;
the rotating body is rotated anticlockwise in the opposite direction, and the process is the same as the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733578.2A CN115045937B (en) | 2022-06-27 | 2022-06-27 | Mechanical limiting mechanism and method for +/-360 DEG turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733578.2A CN115045937B (en) | 2022-06-27 | 2022-06-27 | Mechanical limiting mechanism and method for +/-360 DEG turntable |
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| Publication Number | Publication Date |
|---|---|
| CN115045937A CN115045937A (en) | 2022-09-13 |
| CN115045937B true CN115045937B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210733578.2A Active CN115045937B (en) | 2022-06-27 | 2022-06-27 | Mechanical limiting mechanism and method for +/-360 DEG turntable |
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| CN (1) | CN115045937B (en) |
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| CN115045937A (en) | 2022-09-13 |
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