CN220223307U - Four-bar linkage counterweight structure for limiting heavy hammer of bridge crane - Google Patents
Four-bar linkage counterweight structure for limiting heavy hammer of bridge crane Download PDFInfo
- Publication number
- CN220223307U CN220223307U CN202321442543.XU CN202321442543U CN220223307U CN 220223307 U CN220223307 U CN 220223307U CN 202321442543 U CN202321442543 U CN 202321442543U CN 220223307 U CN220223307 U CN 220223307U
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- CN
- China
- Prior art keywords
- heavy hammer
- trolley
- fixed pulley
- steel wire
- wire rope
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a four-bar counterweight structure for limiting a heavy hammer of a bridge crane, which comprises a trolley, wherein a fixed pulley is arranged in the middle of the trolley, the trolley on one side of the fixed pulley is provided with the heavy hammer for limiting, a fixed rod vertically extends downwards and is fixed on the trolley on the other side of the fixed pulley, the lower end of the fixed rod is hinged with a horizontal steel plate, the other end of the horizontal steel plate is connected with the heavy hammer for limiting through a pull rope, two steel wire rope holes are formed in the horizontal steel plate, and steel wires bypassing the fixed pulley respectively pass through the two steel wire rope holes. After transformation, the limit of the heavy hammer and the steel wire rope have almost no intersection, an operator can better observe the integrity of the limit of the heavy hammer, design the size of the four connecting rods, ensure that the weight of the connecting rods is matched with that of the heavy hammer, and ensure that the movable range of the connecting rods is not blocked.
Description
Technical Field
The utility model relates to a four-bar counterweight structure for limiting a heavy hammer of a bridge crane.
Background
The weight limit is an indispensable part in the protection of safety protection devices in various fields of bridge cranes. The main function of the lifting device is to play a role in the ultimate protection of the lifting height when the rotation limit or the fire-off limit fails in the lifting protection. The steel-making bridge crane is more frequently used, the related national documents prescribe that a lifting mechanism of the lifting equipment must adopt double limit protection (three options of heavy hammer, rotation and fire cutoff), the heavy hammer limit is particularly important as limit protection, because the heavy hammer limit traction steel wire rope and the lifting steel wire rope are mutually paid due to personal operation and winter weather reasons, the heavy hammer counterweight is brought into a head sheave, the heavy hammer limit misoperation bridge crane cannot ascend, the uncertainty of the factors greatly influences the attendance rate of the bridge crane used by the steel-making converter and the continuous casting, the heavy hammer fault main hook cannot ascend the use of a serious converter and a continuous casting process production line crane, and the rotation failure heavy hammer cannot better protect to cause a top hook accident.
Disclosure of Invention
The utility model aims to provide a four-bar counterweight structure for limiting a heavy hammer of a bridge crane, which can ensure that the weight of a connecting bar is matched with the heavy hammer and ensure that the movable range of the connecting bar is not blocked.
In order to achieve the purpose of reliably limiting and using the heavy hammer of the bridge crane, the technical scheme provided by the utility model is as follows: a four-bar counterweight structure for limiting a heavy hammer of a bridge crane comprises a trolley, wherein a fixed pulley is arranged in the middle of the trolley, the trolley on one side of the fixed pulley is provided with a heavy hammer limiting device, a fixed rod vertically extends downwards on the trolley on the other side of the fixed pulley to be fixed, the lower end of the fixed rod is hinged with a horizontal steel plate, the other end of the horizontal steel plate is connected with the heavy hammer limiting device through a pull rope, two steel wire rope holes are formed in the horizontal steel plate, and steel wires bypassing the fixed pulley penetrate through the two steel wire rope holes respectively.
Compared with the prior art, the utility model has the advantages that: the heavy hammer limit of the original bridge crane is characterized in that the steel wire rope is frequently lubricated by oiling, grease is hardened in winter in cold weather, the lifting steel wire rope frequently brings the heavy hammer limit counterweight into the head sheave, and the heavy hammer limit and limit traction steel wire rope are frequently damaged and broken. After transformation, the limit of the heavy hammer and the steel wire rope have almost no intersection, an operator can better observe the integrity of the limit of the heavy hammer, design the size of the four connecting rods, ensure that the weight of the connecting rods is matched with that of the heavy hammer, and ensure that the movable range of the connecting rods is not blocked.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model after it has been put into use.
Description of the embodiments
The present utility model will be described in detail with reference to fig. 1.
A four-bar counterweight structure for limiting a heavy hammer of a bridge crane comprises a trolley 1, wherein a fixed pulley is arranged in the middle of the trolley 1, a heavy hammer limiting 7 is arranged on the trolley on one side of the fixed pulley, a fixing rod 2 is vertically and downwardly extended and fixed on the trolley on the other side of the fixed pulley, the lower end of the fixing rod 2 is hinged with a horizontal steel plate 3, the other end of the horizontal steel plate 3 is connected with the heavy hammer limiting 7 through a pull rope 6, two steel wire rope holes are arranged on the horizontal steel plate 3, and steel wires 4 bypassing the fixed pulley respectively penetrate through the two steel wire rope holes.
The four-bar counterweight is put into use on the limit of the bridge crane heavy hammer, and the implementation process is as follows:
and (3) one end of the two steel plates is provided with two holes phi 16.5mm on line, the other end of the two steel plates is movably connected with one end of the other steel plate by a bolt M16, one end of a steel wire rope phi 6 is fixed by a steel wire rope clamp, one end of the two steel plates phi 16mm is reserved on the steel plates and fixedly installed with a screw hole below a trolley end beam, and the other end of the steel wire rope phi 6 is in limit connection with a heavy hammer after the whole bracket passes through the evenly distributed middle position of the hoisting steel wire rope. When the ground wheel 5 is jacked to the four-bar mechanism steel plate 3 after lifting by a certain height, the counter weight is weightless, the counter weight limiting 7 acts, the lifting power supply is cut off, the frequent faults of the steel wire rope stranded into the head sheave counter weight are avoided, the lifting height is reliably protected, and the occurrence of the overhead hook accident caused by the failure of the rotation limiting is avoided.
Claims (1)
1. A four-bar linkage counterweight structure for bridge crane weight limit comprises a trolley, wherein a fixed pulley is arranged in the middle of the trolley, and the four-bar linkage counterweight structure is characterized in that: the trolley on one side of the fixed pulley is provided with a heavy hammer limit, the trolley on the other side of the fixed pulley is vertically and downwardly extended to fix a fixed rod, the lower end of the fixed rod is hinged with a horizontal steel plate, the other end of the horizontal steel plate is connected with the heavy hammer limit through a pull rope, the horizontal steel plate is provided with two steel wire rope holes, and steel wire ropes bypassing the fixed pulley respectively pass through the two steel wire rope holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321442543.XU CN220223307U (en) | 2023-06-08 | 2023-06-08 | Four-bar linkage counterweight structure for limiting heavy hammer of bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321442543.XU CN220223307U (en) | 2023-06-08 | 2023-06-08 | Four-bar linkage counterweight structure for limiting heavy hammer of bridge crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220223307U true CN220223307U (en) | 2023-12-22 |
Family
ID=89180422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321442543.XU Active CN220223307U (en) | 2023-06-08 | 2023-06-08 | Four-bar linkage counterweight structure for limiting heavy hammer of bridge crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220223307U (en) |
-
2023
- 2023-06-08 CN CN202321442543.XU patent/CN220223307U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |