CN110835062A - Novel tower crane transportation rotation locking device and dismounting and mounting method - Google Patents
Novel tower crane transportation rotation locking device and dismounting and mounting method Download PDFInfo
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- CN110835062A CN110835062A CN201911271613.8A CN201911271613A CN110835062A CN 110835062 A CN110835062 A CN 110835062A CN 201911271613 A CN201911271613 A CN 201911271613A CN 110835062 A CN110835062 A CN 110835062A
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- locking rod
- bearing support
- locking
- pin shaft
- tower crane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/94—Safety gear for limiting slewing movements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a novel tower crane transportation rotation locking device and a dismounting and mounting method, wherein the device comprises a lower bearing support, a first pin shaft, a locking rod, a second pin shaft and an upper bearing support, wherein lug plates are arranged at two ends of the locking rod, and a 90-degree direction is formed between the two lug plates; the lower end of the locking rod is connected to the lower bearing support through a first pin shaft and a first locking nut gasket, and the upper end of the locking rod is connected to the upper bearing support through a second pin shaft and a second locking nut gasket. When the locking nut is disassembled, the locking nut washer I and the pin shaft I are disassembled; then the second lock nut gasket and the second pin shaft are dismounted; moving the locking rod along the locking rod direction until the lower end lug plate leaves the lower bearing support; the locking bar is moved in a horizontal direction to move the upper end ear plate away from the upper bearing support. The steps are reversed during installation. The invention can realize safe and reliable rotation locking, can effectively deal with rotation load in the transportation process, avoids motor damage caused by the rotation load exceeding the motor braking limit, and reasonably utilizes the structural space.
Description
Technical Field
The invention relates to a tower crane rotation locking device and a disassembling and assembling method, and belongs to the technical field of crane safety devices.
Background
The existing tower crane has the advantages that in the transportation process, the rotary part, namely the upper bearing seat and the lower bearing seat which are connected through the rotary support, are generally transported integrally, particularly, when the semi-complete machine is transported overseas, the rotary part needs to be locked, the phenomenon that the tower crane part is collided and is in danger of gravity center offset and the like due to the fact that the rotary part rotates under the influence of the outside in the transportation process is avoided, and therefore the rotary locking is realized in the transportation operation of the tower crane and has an important effect. At present, the conventional solution is to adopt a speed reducer of a rotary motor of the tower crane to brake, and the mode has the potential safety hazard that the objective unfavorable load exceeds the limit of the rotary brake under the condition of poor transportation stability, so that once the braking limit of the rotary device is exceeded, the rotary device is damaged and loses efficacy, even rotary motion occurs, and the dangers of collision, gravity center offset and the like are caused, thereby being very unfavorable for the transportation operation of the tower crane.
Disclosure of Invention
The invention aims to solve the technical problem of providing a stable and safe tower crane rotation locking device aiming at the defects in the prior art.
In order to solve the technical problem, the invention provides a novel rotary locking device for tower crane transportation, which comprises a lower bearing support, a first pin shaft, a locking rod, a second pin shaft and an upper bearing support, wherein two ends of the locking rod are respectively provided with an ear plate, and the two ear plates are in a 90-degree direction; the lower end of the locking rod is connected to the lower bearing support through a first pin shaft and a first locking nut gasket, and the upper end of the locking rod is connected to the upper bearing support through a second pin shaft and a second locking nut gasket.
An open slot is arranged between the ear plates at the upper end of the locking rod, and the width of the slot is equal to the distance between the ear plates.
The device is symmetrically arranged between an upper bearing seat and a lower bearing seat and outside a rotary support by a rotary central shaft in pairs; the lower bearing support is arranged on an upper flange plate of the lower bearing of the tower crane, the upper bearing support is welded on the upper bearing, and an ear plate connected with the locking rod forms an angle of 30 degrees relative to the horizontal plane and is the same as the inclination angle of the configured locking rod after installation.
The invention also provides a dismounting and mounting method of the novel tower crane transportation rotation locking device, which comprises the following steps:
the disassembling method comprises the following steps:
1) removing the first locking nut gasket and the first pin shaft;
2) detaching a second locking nut gasket and a second pin shaft;
3) moving the locking rod along the locking rod direction until the lower end lug plate leaves the lower bearing support;
4) the locking bar is moved in a horizontal direction to move the upper end ear plate away from the upper bearing support.
(II) the installation method comprises the following steps: as opposed to the disassembly step.
Has the advantages that: the invention can realize safe and reliable rotation locking, compared with the traditional rotation motor braking, the invention is purely mechanical braking, can effectively deal with the rotation load in the transportation process, and avoids the motor damage caused by the rotation load exceeding the motor braking limit; the inclined locking rod is adopted for locking relative to the vertical pin shaft, so that the bending moment in the horizontal plane direction can be fully converted into the axial tension and compression of the locking rod, the limited space between the upper bearing seat and the lower bearing seat can be reasonably utilized, the large torque caused by rotation is safely and stably solved, the structural space is reasonably utilized, and the waste of related materials and the adverse influence of the whole machine caused by weight increment of parts are avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic axial side exploded view of the present invention;
fig. 3 is a schematic view of the working state of the present invention.
In the figure: the locking device comprises a lower bearing support 1, a first pin shaft 2, a first locking nut gasket 3, a locking rod 4, a second pin shaft 5, an upper bearing support 6 and a second locking nut gasket 7.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 shows a schematic axial side exploded view of the present invention.
The invention provides a novel rotary locking device for tower crane transportation, which comprises a lower bearing support 1, a first pin shaft 2, a locking rod 4, a second pin shaft 5 and an upper bearing support 6, wherein lug plates are arranged at two ends of the locking rod 4, and the two lug plates are in a 90-degree direction; the lower end of the locking rod 4 is connected to the lower bearing support 1 through a pin shaft I2 and a locking nut gasket I3, and the upper end of the locking rod is connected to the upper bearing support 6 through a pin shaft II 5 and a locking nut gasket II 7.
An open slot is arranged between the ear plates at the upper end of the locking rod 4, and the width of the open slot is equal to the distance between the inner parts of the ear plates.
Fig. 3 is a schematic view illustrating an operation state of the present invention.
The device is symmetrically arranged between an upper bearing seat and a lower bearing seat and outside a rotary support by a rotary central shaft in pairs; the lower bearing support 1 is installed on an upper flange plate of a lower bearing of the tower crane, the upper bearing support 6 is welded on the upper bearing, an ear plate connected with the locking rod 4 forms an angle of 30 degrees relative to the horizontal plane, and the inclination angle is the same as the inclination angle after the installation of the configured locking rod 4. Can be adjusted according to the installation space of the locking device.
The invention also provides a dismounting and mounting method of the novel tower crane transportation rotation locking device, which comprises the following steps:
the disassembling method comprises the following steps:
1) the locking nut washer I3 and the pin shaft I2 are disassembled;
2) detaching the second locking nut gasket 7 and the second pin shaft 5;
3) moving the locking rod 4 along the direction of the locking rod 4 until the lower end lug plate leaves the lower bearing support 1;
4) moving the locking bar 4 in the horizontal direction and the upper end ear plate away from the upper shoe support 6.
(II) the installation method comprises the following steps: as opposed to the disassembly step.
The slewing lock can realize slewing lock in tower crane transportation, particularly in whole machine assembly transportation operation, and avoids the dangers of collision, gravity center shift and the like of tower crane parts caused by the rotation of the slewing part under the influence of the outside in the transportation process, so the slewing lock has very important function in the tower crane transportation operation. The large torque brought by free rotation of the upper and lower structures of the slewing bearing or rotation under the action of external load is fully considered, and the slewing support height of the large tower crane is generally large, so that the slewing braking torque generated by the torque is very large, safe and effective slewing locking is difficult to realize by slewing motor braking and simple pin shaft locking, the rotary motor is in danger of being damaged beyond the braking bearing limit, the upper and lower bearing seat mounting space is insufficient or unnecessary materials of the upper and lower bearing seats are utilized due to the large size of the bearing pin shaft of the latter, and even the upper and lower connecting structural members of the slewing support are difficult to bear; therefore, the inclined locking rod is creatively adopted, so that the bending moment in the horizontal plane direction can be fully converted into the axial tension and compression of the locking rod, the limited control between the upper bearing seat and the lower bearing seat can be reasonably utilized, the large torque caused by rotation is safely and stably solved, the structural space is reasonably utilized, the adverse influence of the whole machine caused by related material waste and part weight increment is avoided, and the inclined locking rod has great practical significance and economic value in the rotation locking operation of the tower crane.
The above-described embodiments of the invention are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (4)
1. A novel rotary locking device for tower crane transportation is characterized by comprising a lower bearing support (1), a first pin shaft (2), a locking rod (4), a second pin shaft (5) and an upper bearing support (6), wherein lug plates are arranged at two ends of the locking rod (4), and a 90-degree direction is formed between the two lug plates; the lower end of the locking rod (4) is connected to the lower bearing support (1) through a first pin shaft (2) and a first lock nut gasket (3), and the upper end of the locking rod is connected to the upper bearing support (6) through a second pin shaft (5) and a second lock nut gasket (7).
2. The novel tower crane transportation rotary locking device as claimed in claim 1, characterized in that an open slot is arranged between ear plates at the upper end of the locking rod (4), and the width of the slot is equal to the inner spacing of the ear plates.
3. The novel tower crane transportation rotation locking device as claimed in claim 1 or 2, wherein the device is symmetrically arranged between the upper and lower bearing seats and outside the rotation support in pairs with the rotation central shaft; the lower bearing support (1) is installed on an upper flange plate of the lower bearing of the tower crane, the upper bearing support (6) is welded on the upper bearing, an ear plate connected with the locking rod (4) forms an angle of 30 degrees relative to the horizontal plane, and the inclination angle is the same as the inclination angle after the installation of the configured locking rod (4).
4. A method for dismounting and mounting a new type tower crane transportation rotation locking device according to any one of claims 1-3, characterized by comprising the following steps:
the disassembling method comprises the following steps:
1) disassembling the first lock nut gasket (3) and the first pin shaft (2);
2) detaching the second locknut gasket (7) and the second pin shaft (5);
3) moving the locking rod (4) along the direction of the locking rod (4) until the lower end ear plate leaves the lower bearing support (1);
4) the locking rod (4) is moved in the horizontal direction to move the upper end lug plate away from the upper bearing support (6).
(II) the installation method comprises the following steps: as opposed to the disassembly step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271613.8A CN110835062A (en) | 2019-12-12 | 2019-12-12 | Novel tower crane transportation rotation locking device and dismounting and mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271613.8A CN110835062A (en) | 2019-12-12 | 2019-12-12 | Novel tower crane transportation rotation locking device and dismounting and mounting method |
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| Publication Number | Publication Date |
|---|---|
| CN110835062A true CN110835062A (en) | 2020-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911271613.8A Pending CN110835062A (en) | 2019-12-12 | 2019-12-12 | Novel tower crane transportation rotation locking device and dismounting and mounting method |
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| CN (1) | CN110835062A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550454A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Bogie and rubber tire train |
| CN112571106A (en) * | 2020-12-04 | 2021-03-30 | 中车南京浦镇车辆有限公司 | Clamping device and trailer bogie |
| CN112571107A (en) * | 2020-12-04 | 2021-03-30 | 中车南京浦镇车辆有限公司 | Clamping device and trailer bogie |
-
2019
- 2019-12-12 CN CN201911271613.8A patent/CN110835062A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550454A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Bogie and rubber tire train |
| CN112571106A (en) * | 2020-12-04 | 2021-03-30 | 中车南京浦镇车辆有限公司 | Clamping device and trailer bogie |
| CN112571107A (en) * | 2020-12-04 | 2021-03-30 | 中车南京浦镇车辆有限公司 | Clamping device and trailer bogie |
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