CN2437653Y - Rope break protection device for lift hook - Google Patents
Rope break protection device for lift hook Download PDFInfo
- Publication number
- CN2437653Y CN2437653Y CN 00221844 CN00221844U CN2437653Y CN 2437653 Y CN2437653 Y CN 2437653Y CN 00221844 CN00221844 CN 00221844 CN 00221844 U CN00221844 U CN 00221844U CN 2437653 Y CN2437653 Y CN 2437653Y
- Authority
- CN
- China
- Prior art keywords
- anchor clamps
- big
- suspension hook
- housing
- base
- 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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- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model discloses a rope break protection device for a lifting hook of a crane. Both ends of a steel rope can thread through a left safety mechanism and a right safety mechanism. The steel rope can be drawn upwards along a guide wheel. The safety mechanism is composed of a casing, a base, a clamp, a clamping sleeve, a compressing spring, an extruding nut, a Haff, and a pin. One base is fixed at the lower part of the casing; the compressing spring is arranged on the base; the upper part of the spring is provided with the clamp; the upper part of the clamp presents a conical surface whose upper part is small and lower part is big; three to eight longitudinal gaps are arranged on the conical surface; the outer part of the clamp is provided with the clamping sleeve in matched way; the upper part of the inner diameter of the clamp is big and the lower part of the inner diameter of the clamp is small. The utility model has the advantage that if a user uses the device of the utility model, the lifting hook and the weight can not be fallen when the steel rope of the lifting hook is broken, so that the utility model can avoid that the personal equipment accident happens.
Description
The utility model relates to the safety device of the disconnected rope of crane hook.
Hoisting crane, large-scale loading-unload machine all are that the suspension hook steel cable is broken and caused that personal injury, device damage accident often have generation with the suspension hook weight of slinging.
The purpose of this utility model is to overcome above-mentioned weak point and the suspension hook parachute gear is provided, and when the suspension hook steel cable was broken, suspension hook and weight are unlikely to be fallen, and avoided personal injury, device damage accident.
Description of the present utility model is as follows: the suspension hook parachute gear is installed on the suspension hook of hoisting crane or large-scale loading-unload machine.Two of steel cable pass the bottom two rollers, pass about two safety mechanisms, again along about the upwards traction of two guide wheels.A portable bar is respectively arranged below two guide wheels, hinge pin is arranged, connect an extension spring in the lower end of two portable bars in the central authorities of portable bar.The pulling force of extension spring and guide wheel are in equilibrium of forces to the tension force of steel cable.Narrate the safety mechanism of the disconnected rope of suspension hook below.Safety mechanism is made up of housing, base, anchor clamps, chuck, stage clip, extruding nut, Hough, pin.Housing is the cylindrical shell of the length of hollow, fixes a base in lower part of frame, and the aperture of base central authorities is than the big 2-4 millimeter of external diameter of steel cable, and steel cable can pass freely through.Compression spring is housed above base, anchor clamps are housed above compression spring, the aperture of anchor clamps central authorities is than the big 1-2 millimeter of external diameter of steel cable, and anchor clamps top is up-small and down-big circular conical surface, has the vertical slot in 3-8 road on the circular conical surface.The arc groove is arranged at the anchor clamps bottom.In the cooperation of the outside of anchor clamps upper cone face the up-small and down-big chuck of internal diameter is housed.The chuck external diameter is cylinder and housing internal diameter interference fit.Hough is housed above anchor clamps, the extruding nut is housed above housing.The central aperture of Hough and extruding nut is all than the big 2-4 millimeter of steel cable external diameter.Mode of operation is such: precession extruding nut, and by Hough top anchor clamps, make anchor clamps overcome the power of compression spring and descending, when the arc groove of anchor clamps bottom is relative with the hole on the housing, inject pin, there is stay cord to be connected on the pin with the portable bar lower end.Screw out the extruding nut, transfer to Hough, and then precession extruding nut.The mode of operation of Here it is safety mechanism.When the suspension hook steel cable was broken, the extension spring of portable bar lower end and guide wheel were to the tension force lack of equilibrium of steel cable.The lower end of two portable bars respectively has a stay cord to be connected with pin.Under the tension of extension spring, about two pins from the hole of the housing of safety mechanism, transfer to, the compression spring of housing bottom is with the anchor clamps jack-up that makes progress, make anchor clamps top have the circular conical surface of slot, under the restriction of chuck, shrink clamping, thereby clamp the head of disconnected rope, and be unlikely to suspension hook and weight in the air, played safety effect from throwing.
Description of drawings:
Figure is the structure cutaway view of suspension hook parachute gear of the present utility model.1-protects button among the figure, the 2-guide wheel, and the 3-portable bar, 4-guiding principle rope, 5-pushes nut, 6-Hough, 7-chuck, 8-housing, 9-anchor clamps, 10-pin, 11-compression spring, 12-base, 13-roller, 14-suspension hook, 15-extension spring, 16-stay cord, 17-hinge pin.
With the used safety device of steel cable of 10 millimeters of external diameters as embodiment of the present utility model: two of steel cable (4) passes bottom two rollers (13), pass about two safety mechanisms, again along about upwards traction of two guide wheels (2).A portable bar (3) is respectively arranged below two guide wheels (2), hinge pin (17) is arranged, connect an extension spring (15) in the lower end of two portable bars (3) in the central authorities of portable bar (3).Safety mechanism is made up of housing (8), base (12), anchor clamps (9), chuck (7), compression spring (11), extruding nut (5), Hough (6), pin (10).Housing (8) is the cylindrical shell of the length of hollow, and with the base that has been threaded (12), the aperture of base central authorities is the 12-14 millimeter in lower part of frame, and steel cable (4) can pass freely through.In the top of base (12) compression spring (11) is housed.In compression spring (11) top anchor clamps (9) are housed, the aperture of anchor clamps (9) central authorities is than the big 1-2 millimeter of steel cable (4) external diameter.Anchor clamps (9) top is up-small and down-big circular conical surface, has 4-6 road slot on the circular conical surface, and the arc groove is arranged at the bottom of anchor clamps (9).In the cooperation of the outside of anchor clamps (9) upper cone face the up-small and down-big chuck of internal diameter (7) is housed.The external diameter of chuck (7) is a cylinder, and housing (8) internal diameter interference fit.In anchor clamps (9) top Hough (6) is housed, extruding nut (5) is equipped with in housing (8) upper end, and the aperture of Hough and extruding nut central authorities is than the big 2-4 millimeter of steel cable (4) external diameter.Precession extruding nut (5), by Hough (6) top anchor clamps (9), make anchor clamps (9) overcome the power of compression spring (11) and descending, when the arc groove of anchor clamps (9) bottom is relative with the hole on the housing, inject pin (10), have stay cord (16) to be connected on the pin (10) with portable bar (3) lower end.Screw out extruding nut (5), transfer to Hough (6), and then precession extruding nut (5), make safety mechanism be mode of operation.When suspension hook steel cable (4) when breaking, extension spring (15) and guide wheel (2) are to the tension force lack of equilibrium of steel cable (4).Under extension spring (15) tension, about two pins (10) from the hole of housing (8), transfer to, the compression spring (11) of housing (8) bottom makes anchor clamps (9) top have the circular conical surface of slot anchor clamps (9) jack-up upwards, shrinks clamping under the restriction of chuck (7).Thereby clamp the head of disconnected rope, and be unlikely to suspension hook (14) and weight in the air, played safety effect from throwing.
Advantage of the present utility model: use rope break protection device for lift hook, when the suspension hook steel cable was broken, suspension hook reached Weight is unlikely to be fallen, and avoids personal injury, device damage accident.
Claims (5)
1, a kind of suspension hook parachute gear that is used for hoisting crane, it is characterized in that safety mechanism is by housing, base, anchor clamps, chuck, compression spring, the extruding nut, Hough, pin is formed, housing is the cylindrical shell of the length of hollow, fix a base in lower part of frame, the aperture of base central authorities is than the big 2-4 millimeter of external diameter of steel cable, compression spring is housed above base, anchor clamps are equipped with in the compression spring top, the aperture of anchor clamps central authorities is than the big 1-2 millimeter of external diameter of steel cable, anchor clamps top is up-small and down-big circular conical surface, have the vertical slot in 3-8 road on the circular conical surface, in the cooperation of the outside of anchor clamps upper cone face the up-small and down-big chuck of internal diameter is housed, the chuck external diameter is a cylinder, with cooperate through interference in the housing, Hough is housed above anchor clamps, the extruding nut is housed above housing, the central aperture of Hough and extruding nut is than the big 2-4 millimeter of steel cable external diameter.
2, suspension hook parachute gear according to claim 1 is characterized in that arc groove is arranged at the anchor clamps bottom, has a hole in the lower part of frame position.
3, suspension hook parachute gear according to claim 1 is characterized in that a portable bar is respectively arranged below two guide wheels, in the central authorities of portable bar hinge pin is arranged, and connects an extension spring in the lower end of two portable bars.
4, suspension hook parachute gear according to claim 1 is characterized in that the lower end of two portable bars respectively has a stay cord to be connected with pin, and pin inserts in the arc groove of anchor clamps bottom by the hole of housing.
5, suspension hook parachute gear according to claim 1, the two that it is characterized in that steel cable pass the bottom two rollers, pass about two safety mechanisms, again along about two upwards tractions of guide wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221844 CN2437653Y (en) | 2000-09-21 | 2000-09-21 | Rope break protection device for lift hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221844 CN2437653Y (en) | 2000-09-21 | 2000-09-21 | Rope break protection device for lift hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2437653Y true CN2437653Y (en) | 2001-07-04 |
Family
ID=33586679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221844 Expired - Fee Related CN2437653Y (en) | 2000-09-21 | 2000-09-21 | Rope break protection device for lift hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2437653Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030067A (en) * | 2012-12-24 | 2013-04-10 | 三一重工股份有限公司 | Protection device for rescue equipment |
| CN106241632A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane of band rock-steady structure |
| CN108946491A (en) * | 2017-05-25 | 2018-12-07 | 小詹姆斯·萨格罗利 | Crane safety device |
-
2000
- 2000-09-21 CN CN 00221844 patent/CN2437653Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030067A (en) * | 2012-12-24 | 2013-04-10 | 三一重工股份有限公司 | Protection device for rescue equipment |
| CN103030067B (en) * | 2012-12-24 | 2015-05-27 | 三一重工股份有限公司 | Protection device for rescue equipment |
| CN106241632A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane of band rock-steady structure |
| CN108946491A (en) * | 2017-05-25 | 2018-12-07 | 小詹姆斯·萨格罗利 | Crane safety device |
| CN108946491B (en) * | 2017-05-25 | 2020-07-24 | 小詹姆斯·萨格罗利 | Safety device of crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |