CN217654739U - Tower machine wire rope oil loss detecting system - Google Patents
Tower machine wire rope oil loss detecting system Download PDFInfo
- Publication number
- CN217654739U CN217654739U CN202221213486.3U CN202221213486U CN217654739U CN 217654739 U CN217654739 U CN 217654739U CN 202221213486 U CN202221213486 U CN 202221213486U CN 217654739 U CN217654739 U CN 217654739U
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- wire rope
- steel wire
- tower crane
- fixed pulley
- oil loss
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Abstract
The utility model discloses a tower crane wire rope oil loss detection system, including the tower machine body, be equipped with jib loading boom and balance arm on the tower machine body, be equipped with the hoist engine on the balance arm, the hoist engine passes through wire rope and connects the fixed pulley, and the fixed pulley passes through wire rope and connects the drive wheel that is located tower machine body top, and the drive wheel passes through wire rope and connects the jib loading boom; the fixed pulley is fixedly provided with a connecting shaft, the connecting shaft is provided with a photoelectric encoder, and the photoelectric encoder is electrically connected with the PLC processor, so that whether the steel wire rope loses oil or not can be automatically detected, and the steel wire rope and each mechanism of the tower crane are prevented from being severely rubbed to damage the steel wire rope and the mechanism of the tower crane.
Description
Technical Field
The utility model relates to a tower machine field, concretely relates to tower machine wire rope oil loss detecting system.
Background
A steel wire rope is often used in the tower crane to drag the crane boom to rotate, when the crane boom is used, lubricating oil is very important, once the steel wire rope loses oil, the friction between the steel wire rope and each mechanism of the tower crane can be greatly increased, the steel wire rope and the mechanism of the tower crane are easy to damage, and the risk of rope breakage of the steel wire rope can be caused.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides a tower machine wire rope oil loss detecting system can whether lose oil by automated inspection wire rope, prevents the violent friction of wire rope and each mechanism of tower machine, damages wire rope and tower machine mechanism.
The utility model adopts the following technical scheme:
a tower crane steel wire rope oil loss detection system comprises a tower crane body, wherein a crane boom and a balance arm are arranged on the tower crane body, a winch is arranged on the balance arm, the winch is connected with a fixed pulley through a steel wire rope, the fixed pulley is connected with a driving wheel positioned at the top of the tower crane body through the steel wire rope, and the driving wheel is connected with the crane boom through the steel wire rope; the fixed pulley is fixedly provided with a connecting shaft, the connecting shaft is provided with a photoelectric encoder, and the photoelectric encoder is electrically connected with the PLC processor.
Preferably, the balance arm is provided with a mounting table, and the fixed pulley is mounted on the mounting table through a mounting bracket.
Preferably, the hoisting machine is arranged at an end of the jib remote from the jib on the jib.
Preferably, the PLC control system further comprises a programmable display screen electrically connected with the PLC processor.
Compared with the prior art, the utility model has the advantages of it is following: whether the steel wire rope loses oil or not can be automatically detected, and the steel wire rope and mechanisms of the tower crane are prevented from being severely rubbed and damaged.
Drawings
Fig. 1 is a schematic structural diagram of a detection system.
Fig. 2 is a schematic structural view of the mounting table.
Fig. 3 is a partially enlarged view of a portion a of fig. 2.
Fig. 4 is a schematic circuit block diagram of the detection system.
In the figure, a tower crane body 1, a crane boom 2, a balance arm 3, a winch 4, a steel wire rope 5, a fixed pulley 6, a driving wheel 7, a connecting shaft 8, a photoelectric encoder 9, a PLC (programmable logic controller) processor 10, an installation platform 11, an installation support 12 and a programmable display screen 13.
Detailed Description
In order to facilitate understanding of the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-4, a tower crane wire rope oil loss detection system comprises a tower crane body 1, wherein a cargo boom 2 and a balance arm 3 are arranged on the tower crane body 1, a winch 4 is arranged on the balance arm 3, the winch 4 is connected with a fixed pulley 6 through a wire rope 5, the fixed pulley 6 is connected with a transmission wheel 7 positioned at the top of the tower crane body 1 through the wire rope 5, and the transmission wheel 7 is connected with the cargo boom 2 through the wire rope 5; fixed pulley 6 is last to be fixed and is provided with connecting axle 8, be equipped with photoelectric encoder 9 on the connecting axle 8, photoelectric encoder 9 electric connection PLC treater 10. The photoelectric encoder 9 can be used for judging the number of self-generated rotation turns.
The balance arm 3 is provided with an installation platform 11, and the fixed pulley 6 is installed on the installation platform 11 through an installation bracket 12.
The hoisting machine 4 is arranged at the end of the balance arm 3 remote from the jib 2.
And a programmable display screen 13 electrically connected with the PLC processor 10.
The utility model discloses when using, fixed pulley 6 rotates a week, and photoelectric encoder 9 also rotates a week. And a steel wire rope oil loss warning interface is arranged on the programmable display screen 13, and the interface is respectively provided with a steel wire rope oil loss warning threshold value A, a steel wire rope oil loss warning threshold value B and a 1-gear n-minute-to-C ring. The fixed pulley 6 of the tower crane is rotating, the rotating frequency is determined by the pulling speed of the steel wire rope 5 and the friction force between the steel wire rope and the fixed pulley 6, when the steel wire rope 5 is not oiled (the friction force between the steel wire rope and the fixed pulley is the maximum), the lifting speed is adjusted to 1 gear, the timing is started for n =5 minutes after the rotating speed is stable (wherein n is an optimal value), the PLC processor 10 records the current number of turns as C1 after the timing is finished, then the steel wire rope 5 is evenly oiled (the friction force between the steel wire rope and the fixed pulley is the minimum), the lifting speed is adjusted to 1 gear, the timing is started for n =5 minutes after the rotating speed is stable (wherein n is an optimal value), and the PLC processor 10 records the current number of turns as C2 after the timing is finished; c1 and C2 are factory initial values of the tower crane and are stored in the PLC processor 10; when the tower crane works normally, the PLC processor 10 judges that timing is started when the lifting speed reaches 1 gear and the output frequency reaches 1 gear frequency, records the number of turns C of the photoelectric encoder 9 (for data accuracy, the precision of the photoelectric encoder should be more than 0.1 turn), and accumulates the timing and the number of turns and stores the timing and the number of turns in a power-off mode. When the output frequency of the lifting motor is not equal to the 1-gear frequency, the timing and the turn number accumulation are stopped, when n =5, the timing and the turn number are reset, and the C value of the previous period is displayed in the 1-gear n-minute-to-C turn on the programmable display screen 13, namely, the detection is wrong at this time, and the result has errors due to the fact that the output frequency is changed.
And inputting a steel wire rope oil loss early warning threshold value A and a steel wire rope oil loss warning threshold value B of a display screen when the tower crane leaves a factory, wherein A =1/2 and B =1/3 are excellent. And when the PLC judges that (C1-C)/(C1-C2) <= A), the programmable display screen 13 is used for warning oil loss of the steel wire rope, and when the PLC judges that (C1-C)/(C1-C2) <= B, the programmable display screen 13 is used for warning oil loss of the steel wire rope, and a tower crane driver is prompted to contact maintenance personnel to refuel the steel wire rope.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.
Claims (4)
1. The oil loss detection system for the steel wire rope of the tower crane is characterized by comprising a tower crane body (1), wherein a crane boom (2) and a balance arm (3) are arranged on the tower crane body (1), a winch (4) is arranged on the balance arm (3), the winch (4) is connected with a fixed pulley (6) through the steel wire rope (5), the fixed pulley (6) is connected with a driving wheel (7) positioned at the top of the tower crane body (1) through the steel wire rope (5), and the driving wheel (7) is connected with the crane boom (2) through the steel wire rope (5); the fixed pulley (6) is fixedly provided with a connecting shaft (8), the connecting shaft (8) is provided with a photoelectric encoder (9), and the photoelectric encoder (9) is electrically connected with the PLC processor (10).
2. The tower crane steel wire rope oil loss detection system according to claim 1, wherein a mounting table (11) is arranged on the balance arm (3), and the fixed pulley (6) is mounted on the mounting table (11) through a mounting bracket (12).
3. The system for detecting the oil loss of the steel wire rope of the tower crane as claimed in claim 1, wherein the winch (4) is arranged at the end part of the balance arm (3) far away from the crane arm (2).
4. The tower crane steel wire rope oil loss detection system as claimed in claim 1, further comprising a programmable display screen (13) electrically connected with the PLC processor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221213486.3U CN217654739U (en) | 2022-05-20 | 2022-05-20 | Tower machine wire rope oil loss detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221213486.3U CN217654739U (en) | 2022-05-20 | 2022-05-20 | Tower machine wire rope oil loss detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217654739U true CN217654739U (en) | 2022-10-25 |
Family
ID=83663441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221213486.3U Active CN217654739U (en) | 2022-05-20 | 2022-05-20 | Tower machine wire rope oil loss detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217654739U (en) |
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2022
- 2022-05-20 CN CN202221213486.3U patent/CN217654739U/en active Active
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