CN112412973B - Large-diameter internal rotation movement mechanism - Google Patents
Large-diameter internal rotation movement mechanism Download PDFInfo
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- CN112412973B CN112412973B CN202011427141.3A CN202011427141A CN112412973B CN 112412973 B CN112412973 B CN 112412973B CN 202011427141 A CN202011427141 A CN 202011427141A CN 112412973 B CN112412973 B CN 112412973B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a large-diameter internal rotation movement mechanism, which comprises a central column, a rack and a rotation centering device, wherein the central column rotates in an inner cavity of the rack; the rolling units are non-fixedly arranged on the rack and are provided with guide wheel sets which roll on the outer circumferential surface of the center column, and the center column rotates concentrically with the rack through the rolling units. The large-diameter inner-rotation movement mechanism does not need an additional aligning tool, is automatically centered, and has high assembly precision and balanced stress of the rolling pair.
Description
Technical Field
The invention relates to the technical field of large-scale engineering machinery rotating equipment structures, in particular to a large-diameter internal rotating movement mechanism.
Background
In engineering machinery, on the basis of comprehensive factors such as cost, environmental conditions, convenience in implementation and the like, a guide wheel raceway structure is adopted as a rotation centering and radial supporting mechanism of a large-diameter inner rotating part. In this structure, the center of the circle of the inner cavity of the frame is the rotation center of the center column. The machine frame is provided with a plurality of supporting wheels, the diameters of the central columns are usually even numbers such as 4, 6, 8 … …, and the like, the central columns are generally uniformly and symmetrically distributed, and the central columns are restrained by the roller paths which are positioned on the machine frame in advance, so that the circle center of the central columns is positioned. However, in actual conditions, the supporting wheels are independently installed on a large-scale welded structural member for positioning and installation, so under the influence of manufacturing precision, working stress, environmental temperature and the like, the precision requirement among the supporting wheels is difficult to guarantee, and the requirement of the supporting wheels on the space precision (the contact ratio of the axes, the parallelism of the end surfaces and the radial run-out) relative to the rolling surface of the central column raceway is difficult to guarantee.
In order to improve the requirement of the whole machine on the rotating concentricity, the gap between the supporting wheel and the raceway can be adjusted by adding an adjusting gasket at the joint of the frame. However, the rolling pair is difficult to accurately center by adopting the structure, the adjustment of the clearance between the supporting wheel and the raceway is labor-consuming and time-consuming, and the requirement of the required precision of the gear engagement backlash when the sun wheel is installed on the central column or the planetary gear transmission pair is installed is difficult to guarantee. The supporting wheel is stressed unevenly, the roller path is easy to pitting, the transmission is not stable, the vibration and the noise are high, and the workload of installation, adjustment, debugging and daily maintenance of the equipment is increased.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides a large-diameter internal rotation movement mechanism which can restrain a member which performs rotary movement on a circle center set in a large-diameter rack frame, does not need to be additionally provided with an aligning tool, is automatically centered, and has high assembly precision and balanced stress of a rolling pair.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a large-diameter internal rotation movement mechanism comprises a central column, a rack and a rotation centering device, wherein the central column rotates in an inner cavity of the rack, the rotation centering device is arranged between the central column and the rack and comprises at least two groups of rolling units, and at least one group of rolling units are adjusting units and are used for adjusting the position of the central column; the rolling units are non-fixedly arranged on the rack and are provided with guide wheel sets, the guide wheel sets roll on the outer circumferential surface of the center column, and the center column is positioned through the rolling units and rotates in a centering mode relative to the rack.
As a further improvement of the above technical solution:
preferably, the rolling unit of the adjusting unit is provided with two adjusting swing rods, the guide wheel sets are provided with two groups, one ends of the two adjusting swing rods are hinged with the rack, and the guide wheel sets are installed on the adjusting swing rods.
Preferably, the rolling unit is further provided with a hinged seat, the hinged seat is fixed on the rack, and one end of each of the two adjusting swing rods is connected with the hinged seat through a hinged shaft.
Preferably, the rolling unit is further provided with a diameter adjusting assembly, the diameter adjusting assembly is arranged at the connecting position of the two adjusting swing rods and the hinge base, and the diameter adjusting assembly is hinged with the two adjusting swing rods.
Preferably, the guide wheel set is hinged with the adjusting swing rod.
Preferably, the guide wheel group is provided with guide wheels of even times, and the guide wheel group is hinged with the adjusting swing rod through a balance swing rod.
Preferably, the guide wheel set is provided with four guide wheels, two ends of the balance swing rod are respectively hinged with a double-roller swing rod, and the double-roller swing rod is provided with two guide wheels.
Preferably, the number of the rolling units is three, and the three rolling units are uniformly distributed along the circumferential direction of the central column.
Preferably, one of the three rolling units is a positioning unit, the positioning unit is arranged at a positioning reference of the rack, and the adjusting units are arranged in two groups.
Compared with the prior art, the large-diameter internal rotation movement mechanism provided by the invention has the following advantages:
(1) the large-diameter inner-rotation movement mechanism can adjust the frame to be concentric with the central column without preparing an additional aligning tool, and can realize displacement of the central column by utilizing the action counter force of the rolling unit guide wheel set, so that the central column which uses the appointed circle center in the frame as the rotation movement function requirement can be simply and conveniently adjusted and positioned, and the requirement of concentric rotation is met.
(2) According to the large-diameter inner-rotation movement mechanism, all rolling units are arranged on the rack through the hinge seats, so that the large-diameter inner-rotation movement mechanism has an angle automatic compensation function and can eliminate stress generated by centering errors in the installation and adjustment processes.
(3) In the large-diameter inner-rotating movement mechanism, at the final positioning stage, any diameter adjusting component is tightened to enable the stress of the three hinged seats to be equal under the combined action of the lever force of each guide wheel set, so that all guide wheels can be automatically attached, gaps are consistent, the stress is balanced, namely all guide wheels can be effectively positioned and supported, and the assembly precision of a rolling pair is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram of the structure of the present invention.
The reference numbers in the figures illustrate:
1. a central column; 2. a frame; 3. a scrolling unit; 31. a guide wheel group; 32. adjusting a swing rod; 33. a hinged seat; 34. a diameter adjustment assembly; 341. a connecting seat; 342. a pin shaft; 343. a double-rotation-direction screw rod; 35. balancing the oscillating bar; 36. a double-roller swing rod.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 shows an embodiment of the large-diameter internal-rotation movement mechanism of the invention, which comprises a central column 1, a frame 2 and a rotary centering device, wherein the frame 2 is provided with an inner cavity which can be not cylindrical and can be polygonal. The central column 1 rotates in the inner cavity of the frame 2 through a rotary centering device, the frame 2 is fixed, and the central column 1 is provided with a raceway circle and rotates around the central axis of the raceway circle.
The rotary centering device is arranged between the central column 1 and the rack 2 and comprises at least two groups of rolling units 3, the at least two groups of rolling units 3 are located at different circumferential positions on the outer circumferential surface of the central column 1, the rolling units 3 are non-fixedly arranged on the rack 2, the rolling units 3 are provided with guide wheel groups 31, the guide wheel groups 31 roll on the outer circumferential surface of the central column 1, the guide wheel groups 31 swing relative to the central column 1 and the rack 2, and the rotation center of the central column 1 is concentric with the rack 2 through the swinging of the guide wheel groups 31. The guide wheels of each guide wheel set can form an enveloping circumference together, the enveloping circumference can form constraint on the central column raceway and form a rolling pair with the central column raceway, so that the central axis of the central column 1 is concentric with the enveloping circumference, and the central column 1 can have a self-rotating function.
In this embodiment, three rolling units 3 are provided, and the three rolling units 3 are uniformly arranged along the circumferential direction of the central column 1 and arranged at an included angle of 120 °. The two rolling units 3 are adjusting units for adjusting the diameter of the rolling circle and adjusting the displacement; and the rolling unit 3 is a positioning unit used for positioning a foundation and arranged at a positioning reference of the rack 2. The rolling unit 3 is hinged to the frame 2 and can therefore swing through a certain angle under the action of the reaction force of the frame 2, in order to eliminate the stresses produced by the centering errors during the mounting and adjustment.
In this embodiment, the rolling unit 3 of the adjusting unit includes an adjusting swing rod 32, an articulated seat 33, a diameter adjusting assembly 34 and 2 guide wheel sets 31, the articulated seat 33 is fixed to the frame 2, the adjusting swing rod 32 is provided with 2 adjusting swing rods 32, the two adjusting swing rods 32 are located at two sides of the articulated seat 33, one end of each adjusting swing rod 32 is connected with the articulated seat 33 through a hinge shaft, and the other end of each adjusting swing rod 32 is hinged to one guide wheel set 31.
In this embodiment, the diameter adjusting assembly 34 is disposed at the connection between the two adjusting swing rods 32 and the hinge seat 33, and the diameter adjusting assembly 34 is hinged to the two adjusting swing rods 32. The diameter adjusting component 34 is composed of a connecting seat 341, a pin 342 and a double-rotation-direction screw rod 343, one end of the double-rotation-direction screw rod 343 is in threaded connection with the connecting seat 341, and the other end is hinged with the adjusting swing rod 32 through the pin 342, and when the double-rotation-direction screw rod 343 is positioned and locked, the adjusting swing rod 32 is fixed.
In this embodiment, the guide pulley sets 31 are provided with guide pulleys of even number times, each guide pulley set 31 in this embodiment is provided with 4 guide pulleys, and the guide pulley set 31 is hinged to the adjusting swing link 32 through a balance swing link 35. Two ends of the balance swing rod 35 are respectively hinged with a double-roller swing rod 36, two ends of each double-roller swing rod 36 are respectively provided with a guide wheel to form radial double wheels, the double-roller swing rods are provided with shaft holes for connecting with the balance swing rod 35, the shaft holes are positioned at the middle point of the connecting line of the axes of the two guide wheels, and 4 guide wheels are hinged to the balance swing rod 35 through the double-roller swing rods to form radial four wheels.
In this embodiment, the rolling unit 3 of the positioning unit includes a balanced positioning swing rod, an articulated seat 33 and 2 guide wheel sets 31, the articulated seat 33 is fixed to the frame 2, the positioning unit and the adjusting unit have the same structure, and the difference lies in that the positioning unit is not provided with a diameter adjusting assembly, so that only one balanced positioning swing rod is provided instead of the adjusting swing rod, and the balanced positioning swing rod of the positioning unit can only rotate relative to the frame 2 and cannot adjust the diameter. The balance positioning swing rod is an arc-shaped plate.
In this embodiment, when the working condition required for adjusting the rotation center of the central column 1 is installed or needs to be performed, the central column 1 is displaced towards the direction of the axis of the enveloping circle of the guide wheel set of the positioning unit by the acting force of the guide wheels of the adjusting swing rods of the two groups of adjusting units on the central column 1 in the closing process until the guide wheels of the guide wheel set of the adjusting unit and the guide wheel set of the positioning unit are attached to the circular outer surface of the raceway of the central column 1. At the moment, the enveloping circle formed by the guide wheel sets forms effective restraint on the raceway of the central column 1. The central axis of the central column 1 and the circumference enveloped by each guide wheel set of the frame 2 automatically form a rolling pair and are concentric with the central axis. As shown in fig. 2, the specific adjustment process is as follows:
firstly, the double-rotation-direction spiral rods 343 of the two groups of diameter adjusting components 34 arranged on the frame 2 are extended, so that the included angle between the adjusting swing rods 32 of the two groups of adjusting rolling units 3 is enlarged, and the enveloping diameter of the guide wheel is larger than the diameter of the roller path of the central column 1. The three eight-wheel rolling units 3 are enveloped into a circle with the diameter larger than the diameter of the roller path of the center post 1 through 24 guide wheels, but the center axis of the circle is not concentric with the axis of the center post 1, and the center of the circle is random.
The radial double wheels can rotate and swing around respective mounting shafts, the radial four wheels can also rotate and swing around the hinged point of the balance swing rod 35 and the adjusting swing rod 32, the adjusting swing rod 32 can rotate and swing around the hinged point of the adjusting swing rod 32 and the hinged seat 33, and then the eight-wheel radial adjusting structure consisting of the two guide wheel sets 31 is formed.
At this time, the eight-wheel radial direction adjustment structure can concentrically swing around the hinge shaft of the hinge base 33.
Thus, when the guide wheel of the guide wheel set 31 on one side is stressed and transmitted to the adjusting swing rod 32, the guide wheel set 31 on the other end, which is symmetrical to the axis of the hinge seat 33, of the same group is enabled to approach to the stressed end under the action of the lever force. That is, if the central post 1 applies a force to any guide wheel of the eight-wheel radial adjusting mechanism in the closing process of the adjusting swing link 32, the guide wheel at the other end of the two-roller swing link 36 will approach the central post 1 at the same time under the action of the lever force until two guide wheels are attached to the raceway surface at the same time. I.e. two wheels of this radial double wheel are simultaneously stressed. Thus, the external force is transmitted to the rotating mandrel and thus to the balance swing rod 35.
Similarly, when any one of the two radial wheels is subjected to an external force, the two radial wheels and the two radial wheels at the other end of the balance swing rod 35 are simultaneously pressed against the rod under the action of the lever force, that is, the two radial wheels are simultaneously subjected to the force. By analogy, if external force is continuously applied, all radial guide wheels can be automatically attached, the gaps are consistent and the stress is balanced under the action of the next-stage mandrel and lever force. Namely, the eight guide wheels of the group can effectively position and support the central column 1.
The double-turning spiral rods 343 of the diameter adjusting components of one group of adjusting units are gradually contracted to reduce the included angle between the adjusting swing rods 32 of the group, and all the guide wheels of the group are simultaneously attached to the raceway surface of the central column 1 under the combined action of the mandrels and the lever balance force. And continuously contracting the diameter adjusting assembly, and pushing the central column 1 to move to one side with a large gap by using acting force generated by each guide wheel and the track surface of the central column 1 in the process, and stopping when a certain distance is reached.
Repeating the above operation, contracting the diameter adjusting component of the other group of adjusting units to make the central column 1 displace towards the guide wheel group of the positioning unit, namely the axis direction of the enveloping circle, until the guide wheel group of the adjusting unit and each guide wheel of the guide wheel group of the positioning unit are attached to the outer surface of the raceway circle of the central column 1.
An enveloping circle formed by the guide wheels of the guide wheel sets forms effective restraint on the roller path of the central column 1, so that the central axis of the central column 1 and the enveloping circumference of the guide wheels of the guide wheel sets of the stand 2 form a rolling pair and are concentric with the central axis of the rolling pair.
Preferably, the side with small clearance between the guide wheel set and the central column is operated in advance.
In the final positioning stage, any diameter adjusting assembly 34 is tightened, so that the stress of the three hinged seats 33 is equal under the combined action of the lever force of each guide wheel set 31, and all the guide wheels can be completely and automatically attached, have consistent gaps and are stressed uniformly. Namely, all the radial guide wheels can realize effective positioning and supporting and ensure the assembly precision of the rolling pair.
The above embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (3)
1. A large-diameter inner rotating movement mechanism is characterized by comprising a central column, a rack and a rotating centering device, wherein the central column rotates in an inner cavity of the rack; the two groups of rolling units are adjusting units and are used for adjusting the position of the central column; the other group of rolling units are positioning units, the positioning units are arranged at the positioning reference positions of the rack, the rolling units are not fixedly arranged on the rack, the rolling units are provided with guide wheel sets, the guide wheel sets roll on the outer circumferential surface of the central column, and the central column is positioned by the rolling units and rotates in a centering manner relative to the rack;
each group of adjusting units comprises two adjusting swing rods and adjusting unit hinge seats, and the adjusting unit hinge seats are arranged on the rack; two groups of guide wheel sets of the adjusting unit are arranged, the two adjusting swing rods are respectively positioned on two sides of an adjusting unit hinged seat, one end of each adjusting swing rod is respectively connected with the adjusting unit hinged seat through a hinged shaft, and the other end of each adjusting swing rod is hinged with a corresponding group of guide wheel sets;
the adjusting unit is further provided with a diameter adjusting assembly, the diameter adjusting assembly is arranged at the joint of the two adjusting swing rods and the adjusting unit hinged seat, the diameter adjusting assembly is hinged to the two adjusting swing rods, and the included angle between the two adjusting swing rods is adjusted through the diameter adjusting assembly.
2. The large-diameter internally rotating motion mechanism according to claim 1, wherein the guide wheel set is provided with an even number of guide wheels, and the guide wheel set is hinged with the adjusting swing rod through a balance swing rod.
3. The large-diameter internal rotation movement mechanism as claimed in claim 2, wherein the guide wheel set is provided with four guide wheels, two ends of the balance swing link are respectively hinged to a double-roller swing link, and the double-roller swing link is provided with two guide wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427141.3A CN112412973B (en) | 2020-12-09 | 2020-12-09 | Large-diameter internal rotation movement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427141.3A CN112412973B (en) | 2020-12-09 | 2020-12-09 | Large-diameter internal rotation movement mechanism |
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| Publication Number | Publication Date |
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| CN112412973A CN112412973A (en) | 2021-02-26 |
| CN112412973B true CN112412973B (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011427141.3A Active CN112412973B (en) | 2020-12-09 | 2020-12-09 | Large-diameter internal rotation movement mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201082505Y (en) * | 2007-09-27 | 2008-07-09 | 呼和浩特众环(集团)有限责任公司 | Self-centering hydraulic pressure center frame |
| CN201380186Y (en) * | 2008-12-24 | 2010-01-13 | 洛阳矿山机械工程设计研究院有限责任公司 | Centering roller device |
| CN202022670U (en) * | 2011-04-12 | 2011-11-02 | 武汉船用机械有限责任公司 | Isolated pillar crane with horizontal idler wheels arranged asymmetrically |
| CN106348200A (en) * | 2016-08-31 | 2017-01-25 | 泰富重工制造有限公司 | Centering rotation mechanism and centering rotation device |
| CN206232146U (en) * | 2016-10-24 | 2017-06-09 | 武汉钢铁股份有限公司 | A kind of bucket-wheel stacker reclaimer slew gear and bucket-wheel stacker reclaimer |
| CN110844614A (en) * | 2019-11-27 | 2020-02-28 | 泰富重工制造有限公司 | Automatic balancing system for centering in large-sized rotating motion part |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7207917B2 (en) * | 2002-05-31 | 2007-04-24 | Klaus Plath | Transmission device comprising an eccentric power transmission axle that is disposed on the bearing axle |
| US8561445B2 (en) * | 2008-10-21 | 2013-10-22 | Smi & Hydraulics, Inc. | Rounding system and method used in the manufacture of wind towers |
-
2020
- 2020-12-09 CN CN202011427141.3A patent/CN112412973B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201082505Y (en) * | 2007-09-27 | 2008-07-09 | 呼和浩特众环(集团)有限责任公司 | Self-centering hydraulic pressure center frame |
| CN201380186Y (en) * | 2008-12-24 | 2010-01-13 | 洛阳矿山机械工程设计研究院有限责任公司 | Centering roller device |
| CN202022670U (en) * | 2011-04-12 | 2011-11-02 | 武汉船用机械有限责任公司 | Isolated pillar crane with horizontal idler wheels arranged asymmetrically |
| CN106348200A (en) * | 2016-08-31 | 2017-01-25 | 泰富重工制造有限公司 | Centering rotation mechanism and centering rotation device |
| CN206232146U (en) * | 2016-10-24 | 2017-06-09 | 武汉钢铁股份有限公司 | A kind of bucket-wheel stacker reclaimer slew gear and bucket-wheel stacker reclaimer |
| CN110844614A (en) * | 2019-11-27 | 2020-02-28 | 泰富重工制造有限公司 | Automatic balancing system for centering in large-sized rotating motion part |
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