CN201292228Y - Telescopic boom protecting device of crane - Google Patents
Telescopic boom protecting device of crane Download PDFInfo
- Publication number
- CN201292228Y CN201292228Y CNU2008201481367U CN200820148136U CN201292228Y CN 201292228 Y CN201292228 Y CN 201292228Y CN U2008201481367 U CNU2008201481367 U CN U2008201481367U CN 200820148136 U CN200820148136 U CN 200820148136U CN 201292228 Y CN201292228 Y CN 201292228Y
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- CN
- China
- Prior art keywords
- hydraulic motor
- key
- safety
- stumbling
- safety device
- 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 discloses a telescopic arm safety device suitable for a miniature crane, which comprises a safety disc and a blocking key, wherein the safety disc is a coaxial fluted disc fixed on a winding drum of a rope winder, and the blocking key is blocked between the fluted disc teeth by stretching or rotating. The utility model effectively avoids the sliding and the retraction of the telescopic suspension arm due to the load thereof during the actual operating process, reduces the pressure of the load to the hydraulic motor during the operating process, avoids or retards the problem of internal leakage of the hydraulic motor, prolongs the service life of the hydraulic motor, and meanwhile, enhances the security of the small and medium-sized hoisting machinery and avoids the hidden danger of the accident. The safety device can be used for the control of the steel wire ropes or the rope drums of various hoisting machineries.
Description
Technical field
The utility model relates to a kind of mechanical device, relates in particular to a kind of contract telescopic crane boom safety device of arm phenomenon of minor crane telescopic boom of controlling.
Background technology
Middle-size and small-size lifting machine is widely used in building and relevant industries thereof, special in vast rural area, the house generally is built into one-storey house or double-decker, build at most to three layers, therefore, labour power had both been saved in the use of middle-size and small-size turned crane, reduce labour intensity, avoid adopting the waste of goliath again.It is power that the telescoping boom of present middle-size and small-size hoisting crane mostly adopts with the HM Hydraulic Motor, drives barrel by HM Hydraulic Motor, change-speed box and rotates the pulling steel rope to control telescopic boom flexible or stop.There is certain potential safety hazard in this master mode: promptly load produces pressure to HM Hydraulic Motor always in operation process, and HM Hydraulic Motor load is heavier, leaks in very easily producing, and makes HM Hydraulic Motor shorten service life; Simultaneously, in the actual job process, the sliding arm phenomenon that contracts can occur, also can cause any property loss and casualty accident when serious owing to the interior leakage of HM Hydraulic Motor produces telescoping boom.
Summary of the invention
The purpose of this utility model provides a kind of telescopic crane boom safety device that is applicable to small-sized loop wheel machine, this device can solve telescoping boom and cause the problem of the sliding arm that contracts owing to self load in the actual job process, alleviate the pressure of loading HM Hydraulic Motor is produced in the operation process, the HM Hydraulic Motor life-span is prolonged.
The technical solution of the utility model realizes in the following manner;
A kind of telescopic crane boom safety device is made up of the safety disk and the key of stumbling, and its safety disk is one to be fixed on the coaxial fluted disc on the ropewinder reel, and the key of stumbling is one to stumble by flexible or rotation and to keep off the key of stumbling at the fluted disc between cog.
The described key of stumbling is one and the one flexible or pivoting controller bonded assembly crescent key of stumbling.
Described flexible or pivoting controller is a spring governor.
Good effect of the present utility model is:
Effectively stoped telescoping boom in the actual job process, to cause the generation of the sliding arm phenomenon that contracts owing to self load, alleviate the pressure that load produces HM Hydraulic Motor in the operation process, avoid or delay the appearance of leakage problem in the HM Hydraulic Motor, the HM Hydraulic Motor life-span is prolonged, improve the safety of middle-size and small-size lifting machine simultaneously, avoided the generation of accident potential.
Description of drawings:
Fig. 1 is a running condition structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As seen from Figure 1: the utility model is to be made up of the safety disk 5 and the key 6 of stumbling, and its safety disk 6 is one to be fixed on the fluted disc on the barrel 3, and the key 6 of stumbling is one to stumble by flexible or rotation and to keep off the key of stumbling at the fluted disc between cog.
Be it can also be seen that by Fig. 1: the key 6 of stumbling is one and the one flexible or pivoting controller 7 bonded assembly crescent keys of stumbling.
Described flexible or pivoting controller 7 is spring governors.
In the utility model operation, just changeing to drive barrels 3 by change-speed box 2 and just changeing when HM Hydraulic Motor 1, steel rope drives the arm elongation, when arm is elongated to the desired location, is stuck in the safety disk between cog rapidly by the key 6 of stumbling of spring governor control and stops the arm cunning to contract.After arm fulfiled assignment, the key of being controlled by spring governor of stumbling hightailed safety disk, and arm is withdrawn under the drive of the HM Hydraulic Motor of counter-rotating.Like this, arm is constantly flexible, the timely block card of the key of stumbling, reach and stop the contract generation of phenomenon of arm cunning, alleviate the load of HM Hydraulic Motor, prevent to leak in the HM Hydraulic Motor phenomenon and occur too early, prolong the service life of HM Hydraulic Motor, improve the safety of middle-size and small-size lifting machine simultaneously, avoided the generation of accident potential.This safety device can be used for the control of various elevator machinery wire rope pulleys or rope roll.
Claims (3)
1, a kind of telescopic crane boom safety device is made up of safety disk (5) and the key of stumbling (6), it is characterized in that: safety disk (5) is one to be fixed on the fluted disc on the barrel (3), and the key of stumbling (6) is one by flexible or rotate the stumble key of retaining at the fluted disc between cog of stumbling.
2, telescopic crane boom safety device according to claim 1 is characterized in that: the key of stumbling (4) is one and one flexible or pivoting controller (7) the bonded assembly crescent key of stumbling.
3, telescopic crane boom safety device according to claim 2 is characterized in that: flexible or pivoting controller is a spring governor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201481367U CN201292228Y (en) | 2008-07-23 | 2008-07-23 | Telescopic boom protecting device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201481367U CN201292228Y (en) | 2008-07-23 | 2008-07-23 | Telescopic boom protecting device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292228Y true CN201292228Y (en) | 2009-08-19 |
Family
ID=41005694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201481367U Expired - Fee Related CN201292228Y (en) | 2008-07-23 | 2008-07-23 | Telescopic boom protecting device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292228Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439223A (en) * | 2017-09-21 | 2018-08-24 | 漳州龙文区信创友工业设计有限公司 | A kind of method of arm of derrick fracture safe protection |
-
2008
- 2008-07-23 CN CNU2008201481367U patent/CN201292228Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439223A (en) * | 2017-09-21 | 2018-08-24 | 漳州龙文区信创友工业设计有限公司 | A kind of method of arm of derrick fracture safe protection |
| CN108439223B (en) * | 2017-09-21 | 2019-10-01 | 泉州台商投资区国钗商贸有限公司 | A kind of method of arm of derrick fracture safe protection |
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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: 20090819 Termination date: 20100723 |