CN2561762Y - Overload limiting mechanism - Google Patents
Overload limiting mechanism Download PDFInfo
- Publication number
- CN2561762Y CN2561762Y CN 02241858 CN02241858U CN2561762Y CN 2561762 Y CN2561762 Y CN 2561762Y CN 02241858 CN02241858 CN 02241858 CN 02241858 U CN02241858 U CN 02241858U CN 2561762 Y CN2561762 Y CN 2561762Y
- Authority
- CN
- China
- Prior art keywords
- limit
- limiting mechanism
- utility
- pusher dog
- model
- 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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- Jib Cranes (AREA)
Abstract
The utility model discloses a lever hoist overload limit mechanism, which includes a stir claw, a friction sheet, a direction changing ratchet wheel, a load limiting spring, a press ring, a positioning pin, a screw nut and a long shaft, one end of the long shaft is connected with the stir claw by a thread, the friction sheet, the direction changing ratchet wheel, the load limiting spring, the press ring, the positioning pin and the screw nut are sequentially arranged on the stir claw along the axial direction. The utility model can effectively prevent the overloading use of the hoist and ensure the safety of the operators.
Description
One, technical field
The utility model relates to a kind of limiting mechanism, and is especially relevant with the overload limiting mechanism that is used for hand chain lever hoist.
Two, background technology
Common in the market hand chain lever hoist (hereinafter to be referred as cucurbit) ubiquity such defective: use cucurbit during the weight of heavy of not lifting by crane (or traction) knowing, the user can't learn whether the cucurbit of working overloads, and cucurbit self can not send corresponding warning yet, and so just the personal safety to the user has constituted a kind of potential danger.
Three, summary of the invention
The purpose of this utility model provides and a kind ofly is intended to improve safety performance, and can uses the overload limiting mechanism of the prompting that gives a warning to the cucurbit overload.
For achieving the above object, technical solution of the present utility model is: the overload limiting mechanism comprises pusher dog, friction lining, the commutation ratchet, limit for tonnage spring, pressure ring, locating dowel pin, nut and major axis, an end of major axis is equipped with pusher dog by being threaded, and friction lining, commutation ratchet, limit for tonnage spring, pressure ring, locating dowel pin is housed on pusher dog vertically successively and is used to regulate the nut of limit for tonnage spring pressure.
The utility model compared with prior art, have following distinguishing feature and good effect: (one) is the safe reliability height: the use in case appearance overloads when cucurbit, the automatic skid of commutation ratchet meeting in the utility model, cucurbit quits work automatically, has guaranteed operator's personal safety; (2) be the prompting that gives a warning automatically: when the cucurbit overload was used, the commutation ratchet skidded, and weight keeps original position can not be raised (or traction), points out the user thus, and used cucurbit is overloaded, could normally use behind the off-load of must taking measures.
Four, description of drawings
Fig. 1 is the structural representation of the utility model overload limiting mechanism.
Five, the specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, the overload limiting mechanism, comprise pusher dog 1, friction lining 2, commutation ratchet 3, limit for tonnage spring 4, pressure ring 5, locating dowel pin 6, nut 7 and major axis 8, one end of major axis 8 is equipped with pusher dog 1 by being threaded, friction lining 2, commutation ratchet 3, limit for tonnage spring 4, pressure ring 5, locating dowel pin 6 are housed on pusher dog 1 vertically successively and are used to regulate the nut 7 of limit for tonnage spring 4 pressure.During the weight of cucurbit in lifting (or traction) rated weight, the pressure of limit for tonnage spring 4 is aligned a setting value by nut 7 by pressure ring 5, because the effect of limit for tonnage spring 4 pressure, pusher dog 1, friction lining 2 and commutation ratchet 3 are pressed into one at this moment, entire mechanism can be made cw or left-hand revolution together along with major axis 8, forms the normal operation of cucurbit thus; When lifting by crane (or traction) when weight of heavy surpasses the rated load of cucurbit, because the required friction force between pusher dog 1, friction lining 2 and commutation ratchet 3 that overload causes has surpassed the preset value of limit for tonnage spring 4, commutating this moment, ratchet can not drive friction lining 2 and pusher dog 1 rotates together, the commutation ratchet is the skid state, cucurbit quits work, weight keeps original position motionless, plays the effect of limit for tonnage thus.
Claims (1)
1, a kind of overload limiting mechanism, comprise pusher dog (1), friction lining (2), commutation ratchet (3), limit for tonnage spring (4), pressure ring (5), locating dowel pin (6), nut (7) and major axis (8) is characterized in that: an end of major axis (8) is equipped with pusher dog (1) by being threaded, and friction lining (2), commutation ratchet (3), limit for tonnage spring (4), pressure ring (5), locating dowel pin (6) is housed on pusher dog (1) vertically successively and is used to regulate the nut (7) of limit for tonnage spring (4) pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241858 CN2561762Y (en) | 2002-07-05 | 2002-07-05 | Overload limiting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241858 CN2561762Y (en) | 2002-07-05 | 2002-07-05 | Overload limiting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561762Y true CN2561762Y (en) | 2003-07-23 |
Family
ID=33714603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02241858 Expired - Fee Related CN2561762Y (en) | 2002-07-05 | 2002-07-05 | Overload limiting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561762Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014286A (en) * | 2015-08-13 | 2015-11-04 | 上海诺霸科技有限公司 | Pull rod |
| CN106219429A (en) * | 2016-08-04 | 2016-12-14 | 杭州维多利机械有限公司 | A kind of chain block load limiter |
-
2002
- 2002-07-05 CN CN 02241858 patent/CN2561762Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014286A (en) * | 2015-08-13 | 2015-11-04 | 上海诺霸科技有限公司 | Pull rod |
| CN106219429A (en) * | 2016-08-04 | 2016-12-14 | 杭州维多利机械有限公司 | A kind of chain block load limiter |
| CN106219429B (en) * | 2016-08-04 | 2018-06-26 | 杭州维多利机械有限公司 | A kind of chain block load limiter |
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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: 20030723 Termination date: 20110705 |