CN2815997Y - Crane hoisting over fall prevention device - Google Patents
Crane hoisting over fall prevention device Download PDFInfo
- Publication number
- CN2815997Y CN2815997Y CN 200520034300 CN200520034300U CN2815997Y CN 2815997 Y CN2815997 Y CN 2815997Y CN 200520034300 CN200520034300 CN 200520034300 CN 200520034300 U CN200520034300 U CN 200520034300U CN 2815997 Y CN2815997 Y CN 2815997Y
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- China
- Prior art keywords
- carrying roller
- bearing
- connecting lever
- hoisting
- block
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- Expired - Fee Related
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Abstract
The utility model provides a crane hoisting over fall preventing protective device. The device controls the work state of a hoisting mechanism according to changes in the number of the cycles of steel wire ropes on a hoisting drum, thereby, the goal of preventing the over fall of the steel wire ropes is reached. The utility model has the primary structure that the device which is composed of a supporting roller, a crank arm, a supporting seat, a stop block, an adjusting screw rod, etc. can detect the increase and the decrease of the number of the cycles of the steel wire ropes on the hoisting drum; in the device, an inflection point positioned at the middle of the crank arm is fixed on the supporting seat through a pin shaft; the supporting roller is assembled at the end part above the crank arm; the supporting roller presses the steel wire ropes of the hoisting drum; through a spring, the lower end of the crank arm is connected with the adjusting screw rod fixed on the supporting seat; the stop block is fixed on the pin shaft. When the number of the cycles of the steel wire ropes on the hoisting drum changes, the stop block swings along with the rotation of the pin shaft, and a travel switch assembled on the supporting seat is struck so that the travel switch closes or opens; thereby, the goal of controlling the work state of the hoisting mechanism is reached. The utility model has the advantages of simple structure, compact structure, small installation space, convenient installation, convenient debugging, good versatility, low cost and high reliability.
Description
Affiliated technical field
The utility model relates to the anti-overdischarging protector of a kind of crane hoisting.
Background technology
The anti-overdischarging protector of known crane hoisting is installed on the side of hoisting mechanism, and will there be the mounting hole of protection device for installing the reel side of hoisting mechanism, will have on the center shaft of hoisting mechanism to drive the eccentric orfice that the fender guard rocking bar rotates.Fender guard drives cam and rotates after multi-stage gear slows down, and after cam turns to certain position, makes mechanical stroke switch closure or disconnection.This fender guard complex structure, installing space is big, only is applicable to volume than the hoisting mechanism that eccentric orfice is arranged on big and the center shaft, during debugging, need the enclosing cover of fender guard is opened, so inconvenient debugging, commonality is relatively poor, the manufacturing cost height, and fiduciary level is lower.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provides a kind of simple in structure, compact, and installing space is little; it is convenient to install, debug; be applicable to various forms of hoisting mechanisms, and low cost of manufacture, the anti-overdischarging protector of the crane hoisting that reliability is high.
The purpose of this utility model is achieved in that crane hoisting prevents overdischarging protector, constitute by device, mechanical snap-type travel switch, an electric control system that can detect steel rope number of turns increase and decrease on the winding drum, electric control system is being controlled the mode of operation of hoisting mechanism, machinery snap-type travel switch is attached on this electric control system, it is characterized in that the device of described detection winding drum steel rope number of turns increase and decrease is made of carrying roller, connecting lever, bearing, block, adjusting screw(rod) and spring; The middle flex point of connecting lever is fixed on the bearing by bearing pin, and the end of connecting lever top is equipped with carrying roller, and carrying roller is close to the steel rope on the elevator reel, and the end below the connecting lever links to each other with adjusting screw(rod) on being fixed on bearing by spring; Block is to be used for the mechanism that impact stroke switch opens and closes, and an end of block is fixed on the bearing pin, and the other end can be swung with the rotation of bearing pin, and mechanical snap-type travel switch is assemblied on the bearing with block the same side, is positioned at the block rear; Above-mentioned carrying roller can be made up of left and right carrying roller, and left and right carrying roller is that center line is fixed near its both sides with the connecting lever: an end of carrying roller is a drum, and the less spindle shape that is in the end of the other end is a cylindrical shape as left carrying roller, and the right-hand member of right carrying roller is the spindle shape; And right carrying roller is a cylindrical shape, and then the left end of left carrying roller is the spindle shape.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is further described:
Fig. 1 is a Facad structure scheme drawing of the present utility model;
Fig. 2 is a construction profile scheme drawing of the present utility model;
Fig. 3 is the utility model fundamental diagram;
Fig. 4 is the utility model fundamental diagram;
Fig. 5 is electric control theory figure of the present utility model.
Among the figure: 1, left carrying roller, 2, right carrying roller, 3, connecting lever, 4, bearing, 5, block, 6, adjusting screw(rod), 7, spring, 8, bearing pin, 9, bearing, 10, mechanical snap-type travel switch, 11, the elevator reel, 12, elevator off-load electromagnetic valve, 13, switching relay, 14, alarm buzzer, 15, prevented putting warning indicator lamp, 16, fixing screw, 17, steel rope.
The specific embodiment
The utility model is made of device, mechanical snap-type travel switch 10, an electric control system that can detect the increase and decrease of the winding drum steel rope number of turns, electric control system is being controlled the mode of operation of hoisting mechanism, and mechanical snap-type travel switch 10 is attached on this electric control system.As shown in Figure 1, the device of described detection winding drum steel rope number of turns increase and decrease is made of carrying roller (left carrying roller 1, right carrying roller 2), connecting lever 3, bearing 4, block 5, adjusting screw(rod) 6 and spring 7; The middle flex point of connecting lever 3 is fixed on the bearing 4 by bearing pin 8 usefulness fixing screws 16, the end assembling carrying roller of connecting lever 3 tops, the present embodiment middle idler roller is made of left carrying roller 1 and right carrying roller 2, left side carrying roller 1 and right carrying roller 2 are assemblied on the bearing 9 near the both sides of connecting lever 3, be fixed on the upper end of connecting lever 3 by bearing 9, and be close to elevator reel 11 and be pressed on the steel rope 17, on the steel rope 17 when being defined the minimum number of turns for carrying roller can be pressed in, left carrying roller 1 can be designed to cylindrical shape, right carrying roller 2 is made the less spindle shape in end, like this, when steel rope 17 is put into the limited number of turns (Ru Sanquan), left side carrying roller 1 has been pressed on the winding drum 11, and right carrying roller 2 less ends still can be pressed on the steel rope 17, as shown in Figure 3; If steel rope 17 is arranged on the left side, right carrying roller 2 can be made as cylindrical shape, then the left end of left carrying roller is just made less spindle shape.As shown in Figure 2, the end below the connecting lever 3 links to each other with adjusting screw(rod) 6 on being fixed on bearing 9 by spring 7.Block 5 is to be used to touch the mechanism that travel switch 10 opens and closes, and an end of block 5 is fixed on the bearing pin 8, and the other end can be swung with the rotation of bearing pin 8, and mechanical snap-type travel switch 10 is assemblied on the bearing 9 with block 5 the same sides, is positioned at the rear of block 5.
Principle of work of the present utility model is as follows:
As shown in Figure 4, when 17 number of turns of the steel rope on the elevator reel 11 are enclosed greater than 3, the lower end of connecting lever 5 is toward upwarping, and block 5 is outwards put, and leaves mechanical snap-type switch 10, make the contact of mechanical snap-type travel switch 10 be in normally open, as shown in Figure 5, switching relay 13, prevented putting warning indicator lamp 15 and alarm buzzer 14 cisco unity malfunctions, the normally closed contact of switching relay 13 is in normally off, elevator off-load electromagnetic valve 12 is in "on" position, and hoisting mechanism is in normal operation.
When 17 number of turns of the steel rope on the elevator reel 11 equal, less than 3 whens circle because the right-hand member of right carrying roller 2 designs for spindle, left carrying roller 1 will directly be pressed on the elevator reel 11, and right carrying roller 2 less ends still are pressed on the steel rope 17, as shown in Figure 3.At this moment the lower end of connecting lever 3 is retracted by spring 7, and block 5 is swung with the rotation of bearing pin 8 backward, as shown in Figure 4.When block 5 strikes the contact of mechanical snap-type travel switch 10, switch 10 closures, switching relay 13, prevented putting warning indicator lamp 15 and alarm buzzer 14 normal operation, the normally closed contact of switching relay 13 is in off-state, and elevator off-load electromagnetic valve 12 is in off-position, and the oil circuit of elevator is in unloading condition, hoisting mechanism stops operating, prevented putting warning indicator lamp 15 flicker simultaneously, alarm buzzer 14 pipes, and operating personal is carried out the audible and visible alarm prompting, as shown in Figure 5.
The utility model has the advantage of:
1, can be by detecting the variation of the steel wire rope number of turns on the winding reel, the duty of control hoisting mechanism reaches and prevents elevator Cross the purpose of putting.
2, whole apparatus structure is simple, compact, and installing space is little, and it is convenient to install, debug.
3, be installed in elevator reel top and use, thereby be applicable to various forms of hoisting mechanisms.
4, low cost of manufacture, the reliability height.
Claims (3)
1, the anti-overdischarging protector of a kind of crane hoisting, constitute by device, mechanical snap-type travel switch, an electric control system that can detect the increase and decrease of the winding drum steel rope number of turns, electric control system is being controlled the mode of operation of hoisting mechanism, machinery snap-type travel switch is attached on this electric control system, it is characterized in that the device of steel rope number of turns increase and decrease on the described detection winding drum is made of carrying roller, connecting lever, bearing, block, adjusting screw(rod) and spring; The middle flex point of connecting lever is fixed on the bearing by bearing pin, and the end of connecting lever top is equipped with carrying roller, and carrying roller is close to the steel rope on the elevator reel, and the end below the connecting lever links to each other with adjusting screw(rod) on being fixed on bearing by spring; Block is to be used for the mechanism that impact stroke switch opens and closes, and an end of block is fixed on the bearing pin, and the other end can be swung with the rotation of bearing pin, and mechanical snap-type travel switch is assemblied on the bearing with block the same side, is positioned at the block rear.
2, the anti-overdischarging protector of crane hoisting according to claim 1, it is characterized in that: carrying roller is made up of left and right carrying roller, and left and right carrying roller is that center line is fixed near its both sides with the connecting lever.
3, the anti-overdischarging protector of crane hoisting according to claim 1 and 2, it is characterized in that: an end of carrying roller is a drum, and the less spindle shape that is in the end of the other end is a cylindrical shape as left carrying roller, and the right-hand member of right carrying roller is the spindle shape; And right carrying roller is a cylindrical shape, and then the left end of left carrying roller is the spindle shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034300 CN2815997Y (en) | 2005-05-25 | 2005-05-25 | Crane hoisting over fall prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034300 CN2815997Y (en) | 2005-05-25 | 2005-05-25 | Crane hoisting over fall prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2815997Y true CN2815997Y (en) | 2006-09-13 |
Family
ID=36995799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520034300 Expired - Fee Related CN2815997Y (en) | 2005-05-25 | 2005-05-25 | Crane hoisting over fall prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2815997Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030279A (en) * | 2010-12-31 | 2011-04-27 | 徐州重型机械有限公司 | Crane and anti-over-discharging protection device of hoisting rope thereof |
| CN102108842A (en) * | 2010-12-24 | 2011-06-29 | 北京市三一重机有限公司 | Over-uncoiling prevention device for rotary drilling rig |
| CN104085803A (en) * | 2014-06-30 | 2014-10-08 | 长治清华机械厂 | Protective device for preventing excessive pay-off of crane steel rope |
| CN104085814A (en) * | 2014-06-30 | 2014-10-08 | 长治清华机械厂 | Crane steel wire rope over-discharge preventing device |
| CN106113952A (en) * | 2016-07-06 | 2016-11-16 | 江苏华桠融通智能科技有限公司 | Recessed code ribbon printer testing agency and recessed code ribbon printer |
| CN109292664A (en) * | 2018-12-07 | 2019-02-01 | 中联重科股份有限公司 | Rope press device, hoist engine and crane |
| CN110902585A (en) * | 2019-12-25 | 2020-03-24 | 上海中联重科桩工机械有限公司 | Winding rope pressing device and engineering mechanical device |
| EP3915930A1 (en) * | 2020-05-22 | 2021-12-01 | Pisek - Vitli Krpan, d.o.o. | Warning device and forestry winch with said device |
-
2005
- 2005-05-25 CN CN 200520034300 patent/CN2815997Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108842A (en) * | 2010-12-24 | 2011-06-29 | 北京市三一重机有限公司 | Over-uncoiling prevention device for rotary drilling rig |
| CN102030279A (en) * | 2010-12-31 | 2011-04-27 | 徐州重型机械有限公司 | Crane and anti-over-discharging protection device of hoisting rope thereof |
| CN104085803A (en) * | 2014-06-30 | 2014-10-08 | 长治清华机械厂 | Protective device for preventing excessive pay-off of crane steel rope |
| CN104085814A (en) * | 2014-06-30 | 2014-10-08 | 长治清华机械厂 | Crane steel wire rope over-discharge preventing device |
| CN104085803B (en) * | 2014-06-30 | 2016-03-30 | 长治清华机械厂 | The anti-overdischarging protector of crane rope |
| CN104085814B (en) * | 2014-06-30 | 2017-02-15 | 长治清华机械厂 | Crane steel wire rope over-discharge preventing device |
| CN106113952A (en) * | 2016-07-06 | 2016-11-16 | 江苏华桠融通智能科技有限公司 | Recessed code ribbon printer testing agency and recessed code ribbon printer |
| CN109292664A (en) * | 2018-12-07 | 2019-02-01 | 中联重科股份有限公司 | Rope press device, hoist engine and crane |
| CN110902585A (en) * | 2019-12-25 | 2020-03-24 | 上海中联重科桩工机械有限公司 | Winding rope pressing device and engineering mechanical device |
| EP3915930A1 (en) * | 2020-05-22 | 2021-12-01 | Pisek - Vitli Krpan, d.o.o. | Warning device and forestry winch with said device |
| AT17928U1 (en) * | 2020-05-22 | 2023-08-15 | Pisek Vitli Krpan Doo | WARNING DEVICE AND FORESTRY WINCH WITH SUCH 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: 20060913 Termination date: 20140525 |