CN108692860B - Lifting mechanism - Google Patents
Lifting mechanism Download PDFInfo
- Publication number
- CN108692860B CN108692860B CN201810758280.0A CN201810758280A CN108692860B CN 108692860 B CN108692860 B CN 108692860B CN 201810758280 A CN201810758280 A CN 201810758280A CN 108692860 B CN108692860 B CN 108692860B
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- lifting
- torque
- transmission
- transmission mechanism
- lifting assembly
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- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Types And Forms Of Lifts (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a lifting mechanism, which is characterized by comprising: the lifting assembly is arranged on the circumference of a circle taking the center of gravity of the workpiece as the center of a circle at equal angles, three upright posts are arranged vertically to provide support in the vertical direction, and a lifting block capable of lifting and moving and a first transmission mechanism capable of receiving torque and converting the torque into lifting and moving of the lifting block are arranged on the lifting assembly; a power means for outputting torque to one of the first transmission mechanisms; and a second transmission mechanism for connection between the lifting assemblies and capable of transmitting torque. According to the invention, the three lifting assemblies are driven to move simultaneously through the power device, so that the weight can move stably, and the force standard machine can obtain a reading with higher precision.
Description
Technical Field
The present invention relates to a lifting mechanism.
Background
In the force standard machine, weights are generally supported by a three-point supporting device, and when the weights are required to be mounted on a central suspender, the three-point supporting device drives the weights to fall and fall on a baffle fixedly connected with the central suspender, so that the weights are mounted.
For a long time, three-point bearings have been motor driven for each lifting element, i.e. three points are active. This presents an asynchronous problem. It is difficult to start or stop three motors at the same time, although by synchronizing the electrical devices. The consequence of this defect is that the weight cannot be placed on the loaded mechanism smoothly, and the stability of force value output is further affected. And the readings are inaccurate, so that the high-precision readings are more difficult to obtain.
Disclosure of Invention
The invention aims to provide a mechanism capable of enabling weights to move stably.
To achieve the purpose, the invention adopts the following technical scheme:
A lifting mechanism, comprising:
The lifting assembly is arranged on the circumference of a circle taking the center of gravity of the workpiece as the center of a circle at equal angles, three upright posts are arranged vertically to provide support in the vertical direction, and a lifting block capable of lifting and moving and a first transmission mechanism capable of receiving torque and converting the torque into lifting and moving of the lifting block are arranged on the lifting assembly;
a power means for outputting torque to one of the first transmission mechanisms; and
And the second transmission mechanism is used for connecting the lifting assemblies and can transmit torque.
As a further improvement of the present invention,
An auxiliary transmission device is arranged between each lifting assembly,
The auxiliary transmission device provides support in the vertical direction through an additional upright post;
And the auxiliary transmission device is provided with a rotating bearing for transmitting torque between the two connected second transmission mechanisms.
As a further improvement of the present invention, the second transmission mechanism includes:
A rod body of rigid structure; and
The universal joint is positioned at the end part of the rod body and used for connecting the rod body with the lifting assembly or the auxiliary transmission device.
As a further improvement of the present invention, the first transmission mechanism includes:
The adjusting rod is fixedly connected with the lifting block and limited in rotation freedom degree around a vertical axis, and the adjusting rod is vertically arranged and provided with external threads;
And the rotating nut is in threaded connection with the adjusting rod and is driven to rotate by the power device.
As a further improvement of the invention, the power device is an electric motor.
The invention has the beneficial effects that the three lifting assemblies are driven to move simultaneously through the power device, so that the weight can move stably, and the force standard machine can obtain high-precision readings.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the lifting assembly or auxiliary drive of FIG. 1;
in the figure: 2-lifting assembly; 4-lifting blocks; 6-a first transmission mechanism; 8-a power plant; 10-a second transmission mechanism; 12-auxiliary transmission device; 14-a rotating bearing; 16-a rod body; 18-universal joint; 20-adjusting the rod.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 2, the present invention includes:
The lifting assembly 2 is arranged on the circumference of a circle taking the center of gravity of a workpiece as the center of a circle at equal angles, three upright posts are arranged vertically to provide support in the vertical direction, and the lifting assembly 2 is provided with a lifting block 4 capable of lifting and moving and a first transmission mechanism 6 capable of receiving torque and converting the torque into lifting and moving of the lifting block 4;
A power device 8 for outputting torque to one of the first transmission mechanisms 6; and
A second transmission mechanism 10 for connection between the lifting assemblies 2 and capable of transmitting torque.
As a further improvement of the present invention,
An auxiliary transmission device 12 is arranged between each lifting assembly 2,
The auxiliary gear 12 is supported in the vertical direction by an additional column;
The auxiliary transmission 12 is provided with a rotary bearing 14 for transmitting torque between the two connected second transmission mechanisms 10.
As a further improvement of the present invention, the second transmission mechanism 10 includes:
A rigid structural rod 16; and
And a universal joint 18 positioned at the end of the rod body 16 and used for connecting the rod body 16 with the lifting assembly 2 or the auxiliary transmission device 12.
As a further development of the invention, the first transmission 6 comprises:
An adjusting rod 20 fixedly connected with the lifting block 4 and limited in rotation freedom around a vertical axis, wherein the adjusting rod 20 is vertically arranged and provided with external threads;
and a rotating nut in threaded connection with the adjusting rod 20, and the rotating nut is driven to rotate by the power device 8.
As a further development of the invention, the power means 8 are electric motors.
The specific principle of the invention is as follows:
(1) The motor rotates and outputs torque to the first transmission mechanism 6 and the second transmission mechanism simultaneously;
(2) The torque transmission mode of the second transmission mechanism 10 is that the universal joint 18 at one end of the rod body 16 receives the torque and then transmits the torque to the rod body 16, and then the torque is transmitted to the universal joint 18 at the other end of the rod body 16;
(3) The torque on the second transmission 10 is transmitted to the auxiliary transmission 12 through the universal joint 18, the auxiliary transmission 12 is transmitted to the rod 16 through the universal joint 18 connected with the other rod 16, and the universal joint 18 at the other end of the rod 16 is transmitted to the second lifting mechanism;
(4) In this way, the first transmission mechanism 6 on the three lifting assemblies 2 obtains a torque which drives the rotation nut to rotate, and the adjusting rod 20 which is in threaded connection with the rotation nut can only make lifting movement because the freedom degree of the adjusting rod around the rotation nut in the vertical direction is limited, so that the lifting block 4 is driven to make lifting movement;
(5) Through the process, the three lifting blocks 4 on the three lifting assemblies 2 are simultaneously lifted, so that the weight is ensured to stably move, and the corresponding problems in the prior art are solved.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (2)
1. A lifting mechanism, comprising:
The lifting assembly (2) is arranged on the circumference of a circle taking the center of gravity of a workpiece as the center of a circle at equal angles, three upright columns are arranged vertically to provide support in the vertical direction, the lifting assembly (2) is provided with a lifting block (4) capable of lifting, and a first transmission mechanism (6) capable of receiving torque and converting the torque into lifting movement of the lifting block (4);
a power unit (8) for outputting torque to one of the first transmission mechanisms (6); and
A second transmission mechanism (10) used for connecting the lifting assemblies (2) and capable of transmitting torque;
The first transmission mechanism (6) comprises:
The adjusting rod (20) is fixedly connected with the lifting block (4) and limited in rotation freedom degree around a vertical axis, and the adjusting rod (20) is vertically arranged and provided with external threads; a rotating nut in threaded connection with the adjusting rod (20), the rotating nut being driven to rotate by the power device (8);
an auxiliary transmission device (12) is arranged between each lifting assembly (2),
-Said auxiliary transmission (12) providing support in the vertical direction by means of an additional said upright;
The auxiliary transmission device (12) is provided with a rotary bearing (14) for transmitting torque between the two connected second transmission mechanisms (10);
the second transmission mechanism (10) comprises a rod body (16) with a rigid structure and a universal joint (18) which is positioned at the end part of the rod body (16) and is used for connecting the rod body (16) with the lifting assembly (2) or the auxiliary transmission device (12).
2. A lifting mechanism according to claim 1, characterized in that the power means (8) is an electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810758280.0A CN108692860B (en) | 2018-07-11 | 2018-07-11 | Lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810758280.0A CN108692860B (en) | 2018-07-11 | 2018-07-11 | Lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108692860A CN108692860A (en) | 2018-10-23 |
| CN108692860B true CN108692860B (en) | 2024-05-31 |
Family
ID=63850114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810758280.0A Active CN108692860B (en) | 2018-07-11 | 2018-07-11 | Lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692860B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2392274A1 (en) * | 1977-05-25 | 1978-12-22 | Borg Warner | Universal shaft joint - has torque-transmitting component between transmitting component between shaft and far ends of pin bearing members |
| US4151728A (en) * | 1978-01-16 | 1979-05-01 | Kimball Brian E | Universal coupling |
| CN2900545Y (en) * | 2006-05-12 | 2007-05-16 | 牛京印 | Screw synchronous lifting drag ring type distributor |
| CN201151644Y (en) * | 2007-11-12 | 2008-11-19 | 中国电子科技集团公司第四十八研究所 | Multi-point synchronous lifting mechanism constituted by bowden cable |
| CN101929906A (en) * | 2010-03-23 | 2010-12-29 | 昆山市创新科技检测仪器有限公司 | Weight synchronous loading and unloading device |
| CN203589187U (en) * | 2013-12-03 | 2014-05-07 | 国家电网公司 | Helicopter measurement-control shelter with automatic antenna lifting apparatus |
| CN204193521U (en) * | 2014-09-30 | 2015-03-11 | 芜湖华强文化科技产业有限公司 | A kind of special efficacy stage radical occlusion device |
| CN204413512U (en) * | 2014-12-08 | 2015-06-24 | 徐州开元世纪重型锻压有限公司 | Motor pressing machine entablature lowering or hoisting gear |
| CN205099227U (en) * | 2015-11-17 | 2016-03-23 | 曾远山 | Automatic tower crane of leveling |
| CN206872370U (en) * | 2017-05-27 | 2018-01-12 | 深圳耀天齐技术服务有限公司 | A kind of aircraft maintenance depressed place electric screw elevating mechanism |
| CN208579863U (en) * | 2018-07-11 | 2019-03-05 | 广东省计量科学研究院 | A kind of elevating mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2646968C (en) * | 2008-04-30 | 2013-02-26 | Dreco Energy Services Ltd. | Drive shaft assembly for a downhole motor |
-
2018
- 2018-07-11 CN CN201810758280.0A patent/CN108692860B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2392274A1 (en) * | 1977-05-25 | 1978-12-22 | Borg Warner | Universal shaft joint - has torque-transmitting component between transmitting component between shaft and far ends of pin bearing members |
| US4151728A (en) * | 1978-01-16 | 1979-05-01 | Kimball Brian E | Universal coupling |
| CN2900545Y (en) * | 2006-05-12 | 2007-05-16 | 牛京印 | Screw synchronous lifting drag ring type distributor |
| CN201151644Y (en) * | 2007-11-12 | 2008-11-19 | 中国电子科技集团公司第四十八研究所 | Multi-point synchronous lifting mechanism constituted by bowden cable |
| CN101929906A (en) * | 2010-03-23 | 2010-12-29 | 昆山市创新科技检测仪器有限公司 | Weight synchronous loading and unloading device |
| CN203589187U (en) * | 2013-12-03 | 2014-05-07 | 国家电网公司 | Helicopter measurement-control shelter with automatic antenna lifting apparatus |
| CN204193521U (en) * | 2014-09-30 | 2015-03-11 | 芜湖华强文化科技产业有限公司 | A kind of special efficacy stage radical occlusion device |
| CN204413512U (en) * | 2014-12-08 | 2015-06-24 | 徐州开元世纪重型锻压有限公司 | Motor pressing machine entablature lowering or hoisting gear |
| CN205099227U (en) * | 2015-11-17 | 2016-03-23 | 曾远山 | Automatic tower crane of leveling |
| CN206872370U (en) * | 2017-05-27 | 2018-01-12 | 深圳耀天齐技术服务有限公司 | A kind of aircraft maintenance depressed place electric screw elevating mechanism |
| CN208579863U (en) * | 2018-07-11 | 2019-03-05 | 广东省计量科学研究院 | A kind of elevating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108692860A (en) | 2018-10-23 |
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