CN110877879A - Self-propelled aerial working platform rotation braking locking device - Google Patents
Self-propelled aerial working platform rotation braking locking device Download PDFInfo
- Publication number
- CN110877879A CN110877879A CN201911157773.XA CN201911157773A CN110877879A CN 110877879 A CN110877879 A CN 110877879A CN 201911157773 A CN201911157773 A CN 201911157773A CN 110877879 A CN110877879 A CN 110877879A
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- driving pinion
- power device
- slewing bearing
- self
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
Abstract
The invention discloses a rotation braking locking device for a self-propelled aerial work platform, and aims to provide a braking locking device which is simple in structure and reliable in braking and locking. The invention is realized by the following technical scheme: the outer circle of the transmission shaft and the inner hole of the driving pinion are provided with a section of conical surface, the lower end of the transmission shaft is provided with a flat-cut body penetrating through the fixing frame, the fixing frame is provided with a flat hole preventing the transmission shaft from rotating, the flat-cut body at the lower end of the transmission shaft is matched with the flat hole of the fixing frame, meanwhile, the transmission shaft is connected with the power device through a radial pin, the power device drives the transmission shaft to move up and down along the axial direction, when the brake is locked, the power device pulls the transmission shaft to move downwards, the downward pulling force of the power device is converted into friction force through the conical surface matching between the transmission shaft and the inner hole. The lower part is a flat hole. The transmission shaft can move up and down in the fixing frame 4 under the driving of the power device without rotating.
Description
Technical Field
The invention relates to a braking and locking device for slewing bearings such as cranes, excavators and aerial work platforms.
Background
The engineering machinery operation platform in the prior art is a movable aerial operation device for serving aerial operation, equipment installation, maintenance and the like in various industries. Self-propelled and aerial work platforms such as cranes and excavators are all provided with a rotary support to ensure a larger work range. Through the rotation of the slewing bearing, the working parts such as a crane, an aerial work platform, an excavator and the like are driven to rotate around the slewing bearing, so that a larger working range is realized. When the rotation is not needed, the slewing bearing must be braked and locked by a reliable slewing brake locking device, so that the slewing bearing is prevented from rotating, and the working part is driven to move, and further safety accidents of personnel or other equipment are avoided. The rotary platform is usually arranged on a walking chassis, the rear end of a telescopic boom is hinged with the rotary platform, a rear balance oil cylinder is fixedly connected to the rotary platform, a piston rod of the rear balance oil cylinder is hinged with the rear end of the telescopic boom, a variable amplitude oil cylinder is fixedly connected to the rotary platform, and a piston rod of the variable amplitude oil cylinder is hinged with the rear end of the telescopic boom. The aerial work platform is improved on the chassis, the large-scale rotation of the whole telescopic boom on the horizontal plane is realized, but the rotation angle of the work platform at the front end of the telescopic boom is limited, the flexibility is poor, and the operable working range of the telescopic boom during positioning is small.
Disclosure of Invention
In order to solve the problem of rotation braking locking of cranes, excavators, aerial work platforms and the like, the invention provides the rotation braking locking device for the self-propelled aerial work platform, which has the advantages of simple structure, convenience in disassembly, assembly and maintenance, low cost, reliability in braking locking and small power required by braking locking.
The technical scheme adopted by the invention for solving the technical problems is as follows: a self-propelled aerial work platform gyration braking locking device, have a drive pinion 2 that meshes with slewing bearing's driven gear 1 and through the power device 6 that the transmission shaft 3 of mount 4 assembly links to each other, characterized by that: the excircle of the transmission shaft 3 and the inner hole of the driving pinion 2 are provided with a section of conical surface, the lower end of the transmission shaft 3 is provided with a flat-cut body penetrating through the fixed frame 4, the fixed frame 4 is provided with a flat hole preventing the transmission shaft 3 from rotating, the flat-cut body at the lower end of the transmission shaft 3 is matched with the flat hole of the fixed frame 4, meanwhile, the transmission shaft 3 is connected with the power device 6 through the radial pin 5, the power device 6 can drive the transmission shaft 3 to move up and down along the axial direction, in a free state, the driven gear 1 drives the driving pinion 2 to rotate around the transmission shaft 3, when braking and locking are needed, the power device 6 pulls the transmission shaft 3 to move downwards, the downward pulling force of the power device 6 is converted into friction force through the conical surface matching between the transmission shaft 3 and the inner hole of the driving. The lower part is a flat hole. The transmission shaft 3 can move up and down in the fixing frame 4 under the driving of the power device 6 without rotating.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a rotary braking locking device which is composed of a driving pinion 2 engaged with a driven gear 1 of a rotary support and a power device 6 connected with a transmission shaft 3 assembled by a fixed frame 4, and has simple structure, low cost and high reliability.
According to the invention, the driving pinion 2 is arranged on the outer side of the rotary support, so that the brake device is convenient to disassemble, assemble and maintain compared with the conventional brake locking device arranged in the rotary support. And the practicability, stability and reliability of the system are verified through experimental tests and customer use.
According to the invention, the brake locking force generated by the pulling force of the power device 6 and the conical surfaces of the driving pinion 2 and the transmission shaft 3 is amplified to generate pressure perpendicular to the conical surfaces, so that friction force is generated, the transmission ratio of the driving pinion 2 and the rotary support 1 is further amplified, and very large brake locking force can be generated by only small pulling force. The smaller the taper, the larger the friction force generated by the same power, the calculated taper angle is 1 degree, and compared with the traditional brake locking mode, the friction force generated by the invention is 114.5 times that generated by the traditional brake locking mode.
The locking device of the invention has high stability and reliability. The locking device has lower cost and good maintainability, and is suitable for being used on cranes, excavators and overhead working trucks
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of the self-propelled aerial work platform rotation brake locking device of the present invention.
Fig. 2 is a partial top view of fig. 1.
Fig. 3 is a schematic partial cross-sectional view.
Fig. 4 is a bottom view of fig. 3 with the power unit 6 removed.
In the figure: 1. the device comprises a movable gear slewing bearing, 2. a driving pinion, 3. a transmission shaft, 4. a fixed frame, 5. a radial pin and 6. a power device.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
See fig. 1-4. In the preferred embodiment described below, a self-propelled aerial work platform slewing brake locking device, having a drive pinion 2 meshing with a driven gear 1 of a slewing bearing and a power unit 6 connected to a drive shaft 3 fitted through a fixed mount 4, is characterized in that: the excircle of the transmission shaft 3 and the inner hole of the driving pinion 2 are provided with a section of conical surface, the lower end of the transmission shaft 3 is provided with a flat-cut body penetrating through the fixed frame 4, the fixed frame 4 is provided with a flat hole preventing the transmission shaft 3 from rotating, the flat-cut body at the lower end of the transmission shaft 3 is matched with the flat hole of the fixed frame 4, meanwhile, the transmission shaft 3 is connected with the power device 6 through the radial pin 5, the power device 6 can drive the transmission shaft 3 to move up and down along the axial direction, and the driven gear 1 drives the driving pinion 2 to rotate; when braking and locking are needed, the power device 6 pulls the transmission shaft 3 to move downwards, the downward pulling force of the power device 6 is converted into friction force through the conical surface of the fit between the transmission shaft 3 and the inner hole of the driving pinion 2, so that the transmission shaft 3 and the inner hole of the driving pinion 2 are in interference fit, the driving pinion 2 is prevented from rotating, and the slewing bearing is locked. The lower part is a flat hole. The transmission shaft 3 can move up and down in the fixing frame 4 under the driving of the power device 6 without rotating.
When the brake is required to be released, the power device 6 pushes the transmission shaft 3 to move upwards, the inner holes of the transmission shaft 3 and the driving pinion 2 are in clearance fit, the friction force disappears, and the driving pinion 2 can rotate along with the driven gear 1 of the slewing bearing, so that the brake locking is released.
An inner hole of the driving pinion 2 penetrates through a transmission shaft 3, two ends of the transmission shaft 3 are respectively supported on a fixed frame 4, and the transmission shaft 3 is connected with a power device 6 through a lower end pin hole by a radial pin 5. The fixing frame 4 is fixed and the lower part is a flat hole. The lower end of the transmission shaft 3 is flattened and matched with a flat hole of the fixing frame 4, and the transmission shaft 3 can move up and down in the fixing frame 4 under the drive of the power device 6 without rotating. The excircle of the transmission shaft 3 and the inner hole of the driving pinion 2 are provided with a section of conical surface, when the power device 6 pulls the transmission shaft 3 to move downwards, the outer conical surface of the transmission shaft 3 and the inner hole conical surface of the driving pinion 2 are tightly pressed, great pressure is generated, and further friction force for preventing the driving pinion 2 from rotating is generated. Since the driving pinion 2 is engaged with the driven gear 1 of the slewing bearing, the friction force is amplified by the transmission ratio of the driving pinion 2 and the driven gear 1 of the slewing bearing, a force for preventing the slewing bearing 1 from rotating is generated, and the slewing bearing 1 is braked and locked and cannot rotate. When the power device 6 drives the transmission shaft 3 to move upwards, a gap is generated between the outer conical surface of the transmission shaft 3 and the inner hole conical surface of the driving pinion 2, the pressure disappears, the braking locking force disappears, and the slewing bearing 1 can rotate freely.
The foregoing is directed to the preferred embodiment of the present invention and it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A self-propelled aerial work platform gyration braking locking device, has a drive pinion (2) that meshes with slewing bearing's driven gear (1) and power device (6) that transmission shaft (3) through mount (4) assembly link to each other, its characterized in that: the outer circle of the transmission shaft (3) and the inner hole of the driving pinion (2) are provided with a section of conical surface, the lower end of the transmission shaft (3) is provided with a flat cutting body penetrating through the fixing frame (4), the fixing frame (4) is provided with a flat hole for preventing the transmission shaft (3) from rotating, the flat cutting body at the lower end of the transmission shaft (3) is matched with the flat hole of the fixing frame (4), meanwhile, the transmission shaft (3) is connected with a power device (6) through a radial pin (5), the power device (6) drives the transmission shaft (3) to move up and down along the axial direction, and in a free state, the driven gear (1) drives the driving pinion (2) to rotate; when the braking locking is needed, the power device (6) pulls the transmission shaft (3) to move downwards, the downward pulling force of the power device (6) is converted into friction force through the transmission shaft (3) and the inner hole matching conical surface of the driving pinion (2), the transmission shaft (3) and the inner hole of the driving pinion (2) are in interference fit, the driving pinion (2) is prevented from rotating, the slewing bearing is locked, and the flat hole below the transmission shaft (3) can move up and down in the fixing frame (4) under the driving of the power device (6) so as not to rotate.
2. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the power device (6) pushes the transmission shaft (3) to move upwards, the inner holes of the transmission shaft (3) and the driving pinion (2) are in clearance fit, friction force disappears, and the driving pinion (2) can rotate along with the driven gear (1) of the slewing bearing, so that braking locking is released.
3. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: an inner hole of the driving pinion (2) penetrates through a transmission shaft (3), two ends of the transmission shaft (3) are respectively supported on the fixed frame (4), and the transmission shaft (3) is connected with a power device (6) through a lower end pin hole by using a radial pin (5).
4. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the fixing frame (4) is fixed and the lower part is a flat hole.
5. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the lower end of the transmission shaft (3) is flattened and matched with a flat hole of the fixing frame (4), and the transmission shaft (3) is driven by the power device (6) to move up and down in the fixing frame (4) without rotating.
6. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the excircle of the transmission shaft (3) and the inner hole of the driving pinion (2) are provided with a section of conical surface, when the power device (6) pulls the transmission shaft (3) to move downwards, the outer conical surface of the transmission shaft (3) and the inner hole conical surface of the driving pinion (2) are tightly pressed, great pressure is generated, and then friction force for preventing the driving pinion (2) from rotating is generated.
7. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the driving pinion (2) is meshed with the driven gear (1) of the slewing bearing, the friction force is amplified through the transmission ratio of the driving pinion (2) and the driven gear (1) of the slewing bearing, force for preventing the slewing bearing (1) from rotating is generated, and the slewing bearing (1) is braked and locked and cannot rotate.
8. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: when the power device (6) drives the transmission shaft (3) to move upwards, a gap is generated between the outer conical surface of the transmission shaft (3) and the inner hole conical surface of the driving pinion (2), pressure disappears, braking locking force disappears, and the slewing bearing (1) rotates freely.
9. A self-propelled aerial work platform swing brake locking device as defined in claim 1, wherein: the driving pinion (2) is meshed with the driven gear (1) of the slewing bearing, the friction force is amplified through the transmission ratio of the driving pinion (2) and the driven gear (1) of the slewing bearing, force for preventing the slewing bearing (1) from rotating is generated, and the slewing bearing (1) is braked and locked and cannot rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157773.XA CN110877879A (en) | 2019-11-22 | 2019-11-22 | Self-propelled aerial working platform rotation braking locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157773.XA CN110877879A (en) | 2019-11-22 | 2019-11-22 | Self-propelled aerial working platform rotation braking locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110877879A true CN110877879A (en) | 2020-03-13 |
Family
ID=69729432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911157773.XA Pending CN110877879A (en) | 2019-11-22 | 2019-11-22 | Self-propelled aerial working platform rotation braking locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110877879A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942615A (en) * | 1974-01-23 | 1976-03-09 | Craig Dennis K | Multi-speed hub with brake |
| US5918718A (en) * | 1996-07-08 | 1999-07-06 | Hoerbiger Antriebstechnik Gmbh | Friction unit for synchronization device of transmission |
| CN201925370U (en) * | 2010-07-27 | 2011-08-10 | 一汽解放青岛汽车厂 | Intermediate shaft brake of transmission for heavy-duty vehicle |
| CN102352898A (en) * | 2011-07-11 | 2012-02-15 | 一汽解放青岛汽车有限公司 | Pneumatic-type intermediate-shaft braking system and braking method |
| CN204140706U (en) * | 2014-10-09 | 2015-02-04 | 无锡智数商务信息咨询有限公司 | Hoist small detents |
| CN204805388U (en) * | 2015-07-10 | 2015-11-25 | 无锡商业职业技术学院 | Annular impulse type slow -speed of revolution gear decelerator |
-
2019
- 2019-11-22 CN CN201911157773.XA patent/CN110877879A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942615A (en) * | 1974-01-23 | 1976-03-09 | Craig Dennis K | Multi-speed hub with brake |
| US5918718A (en) * | 1996-07-08 | 1999-07-06 | Hoerbiger Antriebstechnik Gmbh | Friction unit for synchronization device of transmission |
| CN201925370U (en) * | 2010-07-27 | 2011-08-10 | 一汽解放青岛汽车厂 | Intermediate shaft brake of transmission for heavy-duty vehicle |
| CN102352898A (en) * | 2011-07-11 | 2012-02-15 | 一汽解放青岛汽车有限公司 | Pneumatic-type intermediate-shaft braking system and braking method |
| CN204140706U (en) * | 2014-10-09 | 2015-02-04 | 无锡智数商务信息咨询有限公司 | Hoist small detents |
| CN204805388U (en) * | 2015-07-10 | 2015-11-25 | 无锡商业职业技术学院 | Annular impulse type slow -speed of revolution gear decelerator |
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Application publication date: 20200313 |