CN201202745Y - Novel overload protection device and electric loop chain hoister thereof - Google Patents
Novel overload protection device and electric loop chain hoister thereof Download PDFInfo
- Publication number
- CN201202745Y CN201202745Y CNU2007201489824U CN200720148982U CN201202745Y CN 201202745 Y CN201202745 Y CN 201202745Y CN U2007201489824 U CNU2007201489824 U CN U2007201489824U CN 200720148982 U CN200720148982 U CN 200720148982U CN 201202745 Y CN201202745 Y CN 201202745Y
- Authority
- CN
- China
- Prior art keywords
- overload protection
- loop chain
- gear
- protection arrangement
- driving component
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a novel overload protection device including an axis and a friction drive mechanism arranged on the axis. The device is characterized in that the friction drive mechanism comprises at least one or a group of friction plates clamped between adjacent driving parts, wherein the driving parts of at least one end are fastened through screw fasteners, and a disc spring is arranged between the screw fasteners and the driving parts. The device also provides an electric chain hoist. The utility model is simple in structure, convenient to maintain, low in cost, safe and reliable.
Description
Technical field
The utility model is specifically related to a kind of novel electronic loop chain lift that is used for mechanically operated overload protection arrangement and uses this overload protection arrangement.
Background technique
In mechanical field, take place owing to overload causes mechanism's " vexed car " through regular meeting, serious meeting causes the damage of driving mechanism and operation mechanism.Therefore, overload protection arrangement has crucial meaning.
In the existing mechanical transmission, slide relative takes place when mainly utilizing the frictional force of friction plate to make between the adjacent driving component to surpass certain load in overload device automatically, thereby realizes the purpose of overload protection.
But, in the existing overload protection arrangement, how to make things convenient for, determine accurately the maximal friction of friction plate, be a very important factor.
A kind of method is to adopt the positive pressure that plain bolt connects provides friction plate, and still, for fastening means such as general bolt, nut, it is difficult to accurately measure the suffered positive pressure of friction plate.Therefore, adopt this mode, the maximal friction that is produced on the friction plate has very big uncertainty.If the bolt and nut tension causes friction plate overload values height, do not have the purpose of protection.In the practical application, reliable in order to ensure overload protection artificially reduces the maximal friction of friction plate often, reduces the actual overload values of overload protection, but also is equivalent to reduce simultaneously the usefulness of transmission system, causes to a certain degree performance or usefulness waste.
Another kind method is to adopt comparatively complicated supplementary structure that the positive pressure of friction plate quantitatively is provided, measure definite positive pressure etc. as piezoelectric measuring device, though this method can be accurately quantitative overload values, but because auxiliary system complexity, cause overload device cost height, poor reliability, cause the drive mechanism volume to increase simultaneously, for being difficult to practical application as structural volume small device such as electronic loop chain lifts.
The model utility content
At defective and the deficiency that existing overload protection arrangement exists, a purpose of the present utility model is to provide a kind of novel overload protection arrangement and uses the electronic loop chain lift of this overload protection arrangement.
The technical solution of the utility model is as follows:
A kind of novel overload protection arrangement; comprise one and be arranged at slip gear on the axle; it is characterized in that: described slip gear comprises one or one group of friction plate that is folded between the adjacent driving component at least; wherein have at least the driving component of an end fastening, between described threaded fastener and driving component, be provided with butterfly spring by threaded fastener.
Described threaded fastener is provided with and ends loose device.
It is described that to end loose device be nut-lock washer.
Described threaded fastener is a round nut.
A kind of electronic loop chain lift comprises motor, reducing gear, loop chain lifting device, it is characterized in that: be provided with aforesaid overload protection arrangement in the described electronic loop chain lift.
Described reducing gear is a planetary gear reducing mechanism.
Described planetary gear reducing mechanism comprises generator shaft gear, trisection planetary pinion and internal gear.
Described loop chain lifting device comprises suspension hook, chain hoist wheel, pleasure boat and hoisting chain.
Technique effect of the present utility model is:
The utility model is by being provided with butterfly spring between friction plate and fastening piece, can effectively overcome: traditional overload device since fastening piece contacting with friction plate when fastening, small distortion promptly can cause huge fastening force, thereby be difficult to accurately control and put on positive pressure on the friction plate, and the maximal friction that produced thus of friction plate, and fastening piece in use is easy to become flexible, come off.The technical solution of the utility model is because butterfly spring can be controlled the maximal friction that the positive pressure that puts on the friction plate is corresponding control friction plate generation on the one hand, can prevent effectively that on the other hand fastening piece is loosening, simultaneously, utilize the technical program, in conjunction with widely used controlled torque spanner, make installation process simple, be convenient to safeguard.
Because the utility model is simple in structure, can not increase the volume of driving mechanism basically, therefore be applicable to electronic or manual chain elevator.Utilize the electronic loop chain lift of overload protection arrangement of the present utility model under the prerequisite that does not increase volume, to realize device security, effective, reliable overload protection.
Description of drawings
Fig. 1 is the structural representation of the utility model overload protection arrangement;
Fig. 2 is the structural representation of the electronic loop chain lift of the utility model;
Fig. 3 is a trisection planetary gear reducing mechanism schematic representation;
Fig. 4 is the side sectional view of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Be illustrated in figure 1 as a kind of preferred embodiment structural representation of the utility model overload protection arrangement.
Transmission shaft 1 is provided with the driving component 3 and the driving component 4 of adjacent cooperation transmission, be provided with friction plate 2 between driving component 3 and the driving component 4, fit and produce friction with transferring power with driving component 3 and driving component 4 respectively in friction plate 2 two ends, driving component 3 is fixed by key and transmission shaft 1 and is rotated with axle, the one end and the shaft shoulder offset, the other end extends into the less axle sleeve structure of radial dimension, driving component 4 one ends link to each other with driving component 3 by friction plate 2, the other end is by being assemblied in round nut 5 and the disk spring 6 and friction plate 2 on the described axle sleeve, driving component 3 is fastened, and round nut 5 is provided with nut-lock washer 7.
During use; the moment that can utilize torque spanner to set for round nut 5 as required; this moment is directly delivered on driving component 4 and the friction plate 2 by disk spring 6; be equivalent to friction plate 2 one quantifiable positive pressure; friction factor in conjunction with friction plate 2 can converse its maximum friction, and this maximum friction is its maximum load, when driving torque during greater than this load; friction plate 2 and 4 slide relative of driving component reach the purpose that unloads and protect device security.
As shown in Figure 1, driving component 4 is provided with a recess structure, and round nut 5 and disk spring 6 all are arranged at this recess, can effectively avoid the transmission device volume to increase.
Be illustrated in figure 2 as the structural representation of the electronic loop chain lift of the utility model.
Be illustrated in figure 3 as the structural representation of the trisection planetary gear reducing mechanism that adopts in the utility model, Fig. 4 is the side sectional view of Fig. 3.
Its structure and working principle: 3 planetary pinions 10 are positive angular distribution and head and the tail engagement successively, motor 8 output shafts are positioned at the central position of this 3 planetary pinion 10 and mesh respectively with 3 gears, and the output shaft of 3 planetary pinions 10 lays respectively in the pin-and-hole 9 as driving pin and outputting power.
The above only is a preferred implementation of the present utility model.Should be pointed out that for a person skilled in the art foundation invention essence of the present utility model can also be made other distortion and improvement, but these distortion and improvement all should fall into protection domain of the present utility model.
Claims (8)
1. novel overload protection arrangement; comprise one and be arranged at slip gear on the axle; it is characterized in that: described slip gear comprises one or one group of friction plate that is folded between the adjacent driving component at least; wherein have at least the driving component of an end fastening, between described threaded fastener and driving component, be provided with butterfly spring by threaded fastener.
2. novel overload protection arrangement as claimed in claim 1 is characterized in that: described threaded fastener is provided with and ends loose device.
3. novel overload protection arrangement as claimed in claim 2 is characterized in that: described to end loose device be nut-lock washer.
4. novel overload protection arrangement as claimed in claim 1 is characterized in that: described threaded fastener is a round nut.
5. an electronic loop chain lift comprises motor, reducing gear, loop chain lifting device, it is characterized in that: be provided with overload protection arrangement as claimed in claim 1 in the described electronic loop chain lift.
6. electronic loop chain lift as claimed in claim 5 is characterized in that: described reducing gear is a planetary gear reducing mechanism.
7. electronic loop chain lift as claimed in claim 6, it is characterized in that: described planetary gear reducing mechanism comprises generator shaft gear, trisection planetary pinion and internal gear.
8. electronic loop chain lift as claimed in claim 7 is characterized in that: described loop chain lifting device comprises suspension hook, chain hoist wheel, pleasure boat and hoisting chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201489824U CN201202745Y (en) | 2007-04-28 | 2007-04-28 | Novel overload protection device and electric loop chain hoister thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201489824U CN201202745Y (en) | 2007-04-28 | 2007-04-28 | Novel overload protection device and electric loop chain hoister thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202745Y true CN201202745Y (en) | 2009-03-04 |
Family
ID=40425059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201489824U Expired - Fee Related CN201202745Y (en) | 2007-04-28 | 2007-04-28 | Novel overload protection device and electric loop chain hoister thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202745Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012092823A1 (en) * | 2011-01-07 | 2012-07-12 | 上海东锐风电技术有限公司 | Assisting apparatus for climbing ladder in wind turbine tower |
| CN102042364B (en) * | 2009-10-26 | 2013-04-10 | 海洋王照明科技股份有限公司 | Gear transmission assembly |
| CN103104629A (en) * | 2011-10-18 | 2013-05-15 | 罗伯特·博世有限公司 | Overload protection device for transmission device |
-
2007
- 2007-04-28 CN CNU2007201489824U patent/CN201202745Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042364B (en) * | 2009-10-26 | 2013-04-10 | 海洋王照明科技股份有限公司 | Gear transmission assembly |
| WO2012092823A1 (en) * | 2011-01-07 | 2012-07-12 | 上海东锐风电技术有限公司 | Assisting apparatus for climbing ladder in wind turbine tower |
| CN103104629A (en) * | 2011-10-18 | 2013-05-15 | 罗伯特·博世有限公司 | Overload protection device for transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20100428 |