CN220283413U - Lifting arm with single-cylinder five-section arm telescopic mechanism - Google Patents
Lifting arm with single-cylinder five-section arm telescopic mechanism Download PDFInfo
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- CN220283413U CN220283413U CN202321867056.8U CN202321867056U CN220283413U CN 220283413 U CN220283413 U CN 220283413U CN 202321867056 U CN202321867056 U CN 202321867056U CN 220283413 U CN220283413 U CN 220283413U
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- 238000004804 winding Methods 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a lifting arm with a single-cylinder five-section arm telescopic mechanism. The crane boom comprises a crane boom unit, a telescopic driving unit, an arm stretching inhaul cable unit and an arm shrinking inhaul cable unit. The lifting arm unit comprises a first arm, a second arm, a third arm, a fourth arm and a fifth arm which are sequentially arranged. The arm stretching inhaul cable unit comprises three sections of arm stretching inhaul cables, four sections of arm stretching inhaul cables and five sections of arm stretching inhaul cables. The utility model adopts the single-cylinder five-section arm telescopic mechanism, optimizes the wire rope winding mode, reduces the space occupation ratio of the wire rope in the cylinder body, saves the section of the cylinder body, cancels a four-section arm telescopic cable on the basis of the traditional single-cylinder five-section arm telescopic mechanism, shares the four-section arm telescopic cable with the five-section arm telescopic cable, saves the cost, and reduces the length of one section of the arm telescopic cable, namely the fixed position of the cable is changed compared with the traditional telescopic mode.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a crane boom with a single-cylinder five-joint boom telescopic mechanism.
Background
The crane boom is used as a very critical working device of the automobile crane, and different boom length combinations are realized through the luffing mechanism and the telescopic mechanism to carry out lifting operation. Five-section arm is the main product in market, and traditional five-section arm adopts two arm extending oil cylinders to stretch and retract, and the whole weight of the lifting arm is heavy, and the cost is high. In recent years, part of the crane boom with a single cylinder is adopted in the market, but the steel wire ropes in the inner space are too many to be wound, so that the section size of the cylinder body is influenced, and the lifting performance of the crane is further limited.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a lifting arm with a single-cylinder five-section arm telescopic mechanism.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a lifting arm with a single-cylinder five-section arm telescopic mechanism comprises a lifting arm unit, a telescopic driving unit, an arm stretching inhaul cable unit and an arm shrinking inhaul cable unit;
the lifting arm unit comprises a first arm, a second arm, a third arm, a fourth arm and a fifth arm which are sequentially arranged;
the arm stretching inhaul cable unit comprises three sections of arm stretching inhaul cables, four sections of arm stretching inhaul cables and five sections of arm stretching inhaul cables; one end of the three-section arm extension inhaul cable is connected with the arm tail of one section arm, and the other end of the three-section arm extension inhaul cable is connected with the arm tail of the three section arm; one end of the four-section arm extension inhaul cable is connected with the arm tail of the two sections of arms, and the other end of the four-section arm extension inhaul cable is connected with the arm tail of the four sections of arms; one end of the five-section arm extension inhaul cable is connected with the arm tail of the three-section arm, and the other end of the five-section arm extension inhaul cable is connected with the arm tail of the five-section arm;
the arm retraction cable unit comprises three sections of arm retraction cables and five sections of arm retraction cables; one end of the three-section arm retraction cable is connected with the arm head of one section arm, and the other end of the three-section arm retraction cable is connected with the arm tail of the two sections arm; one end of the arm shrinkage inhaul cable of the five-section arm is connected with the arm head of the five-section arm, and the other end of the arm shrinkage inhaul cable of the five-section arm is connected with the arm tail of the three-section arm.
Furthermore, the telescopic driving unit adopts an arm extending oil cylinder.
Further, a first fixed pulley is arranged at the head of the arm extending oil cylinder.
Further, the head of the three-section arm is provided with a second fixed pulley.
Further, the head of the four-section arm is provided with a third fixed pulley.
Further, a fourth fixed pulley is arranged at the tail part of the two sections of arms.
Further, a fifth fixed pulley is arranged at the tail part of the three-section arm.
Compared with the prior art, the utility model has the advantages that:
the utility model adopts the single-cylinder five-section arm telescopic mechanism, optimizes the wire rope winding mode, reduces the space occupation ratio of the wire rope in the cylinder body, saves the section of the cylinder body, cancels a four-section arm telescopic cable on the basis of the traditional single-cylinder five-section arm telescopic mechanism, shares the four-section arm telescopic cable with the five-section arm telescopic cable, saves the cost, and reduces the length of one section of the arm telescopic cable, namely the fixed position of the cable is changed compared with the traditional telescopic mode.
Drawings
FIG. 1 is a schematic view of a crane arm structure in accordance with the present utility model;
fig. 2 is a schematic diagram of a second embodiment of the crane arm according to the present utility model.
Wherein:
1. one section of arm, 2, two sections of arms, 3, three sections of arms, 4, four sections of arms, 5, five sections of arms, 6, arm extending oil cylinders, 7, five sections of arm extending inhaul cables, 8, four sections of arm extending inhaul cables, 9, three sections of arm extending inhaul cables, 10, five sections of arm shrinking inhaul cables, 11, three sections of arm shrinking inhaul cables.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
a boom with a single cylinder five-arm telescopic mechanism as shown in fig. 1 and 2, the boom comprising a boom unit, a telescopic drive unit, an arm extension cable unit and an arm retraction cable unit.
The lifting arm unit comprises a first arm 1, a second arm 2, a third arm 3, a fourth arm 4 and a fifth arm 5 which are sequentially arranged.
The arm stretching inhaul cable unit comprises three sections of arm stretching inhaul cables 9, four sections of arm stretching inhaul cables 8 and five sections of arm stretching inhaul cables 7; one end of the three-section arm extension inhaul cable 9 is connected with the arm tail of the one section arm 1, and the other end of the three-section arm extension inhaul cable is connected with the arm tail of the three section arm 3; one end of the four-section arm extension inhaul cable 8 is connected with the arm tail of the two sections of arms 2, and the other end of the four-section arm extension inhaul cable is connected with the arm tail of the four sections of arms 4; one end of the five-section arm extension inhaul cable 10 is connected with the arm tail of the three-section arm 3, and the other end of the five-section arm extension inhaul cable is connected with the arm tail of the five-section arm 5.
The arm retraction cable unit comprises three sections of arm retraction cables 11 and five sections of arm retraction cables 7; one end of the three-section arm contraction inhaul cable 11 is connected with the arm head of the one section arm 1, and the other end of the three-section arm contraction inhaul cable is connected with the arm tail of the two sections arm 2; one end of the five-section arm retraction cable 10 is connected with the arm head of the five-section arm 5, and the other end is connected with the arm tail of the three-section arm 3.
In the crane boom, one end of the arm stretching inhaul cable of the five-section arm is fixed at the tail of the five-section arm, the tail of the five-section arm is not bypassed to be fixed at the head of the five-section arm, and the length of the arm stretching inhaul cable of the five-section arm is saved; one end of the four-section arm extension cable is fixed at the tail of the four-section arm, and the tail of the four-section arm is not bypassed to be fixed at the head of the four-section arm, so that the length of the four-section arm extension cable is saved; the four-section arm retraction cables share the five-section arm extension cables, so that two four-section arm retraction cables are saved. In addition, based on the technical characteristics, only one telescopic oil cylinder is used for the five sections of telescopic arms, so that the weight of the crane arm is reduced, the cost is saved, and the self-lifting capacity of the crane arm is improved.
Furthermore, the telescopic driving unit adopts an arm extending oil cylinder 6.
Further, a first fixed pulley is arranged at the head of the arm extending oil cylinder 6.
Further, the head of the three-section arm 3 is provided with a second fixed pulley.
Further, a third fixed pulley is arranged at the head of the four-section arm 4.
Further, a fourth fixed pulley is arranged at the tail part of the two-section arm 2.
Further, a fifth fixed pulley is arranged at the tail part of the three-section arm 3.
The working method of the crane boom comprises the following steps:
s1, extension of a lifting arm
As shown in fig. 1, the telescopic cylinder 6 stretches out to drive the two-section arm 2 to stretch out, the three-section arm stretching cable 9 drives the three-section arm 3 to stretch out through a first fixed pulley fixed at the head of the arm stretching cylinder 6, the four-section arm stretching cable 8 drives the four-section arm 4 to stretch out through a second fixed pulley fixed at the head of the three-section arm 3, and the five-section arm stretching cable 10 drives the five-section arm 5 to stretch out through a third fixed pulley fixed at the head of the four-section arm 4.
S2, retraction of the crane arm
As shown in fig. 2, the telescopic cylinder 6 retracts to drive the two-section arm 2 to retract, the three-section arm retraction cable 9 drives the three-section arm 3 to retract through a fourth fixed pulley fixed at the tail part of the two-section arm 2, the five-section arm retraction cable 10 drives the five-section arm 5 to retract through a fifth fixed pulley fixed at the tail part of the three-section arm 3, and when the five-section arm 5 retracts, the four-section arm is driven to retract through a third fixed pulley fixed at the head part of the four-section arm 4 through the five-section arm extension cable 7.
In summary, the utility model adopts the single-cylinder five-section arm telescopic mechanism, optimizes the wire rope winding mode, reduces the space occupation ratio of the wire rope in the cylinder, saves the section of the cylinder, cancels a four-section arm telescopic cable on the basis of the traditional single-cylinder five-section arm telescopic mechanism, shares the four-section arm telescopic cable with the five-section arm telescopic cable, saves the cost, and reduces the length of one section of the telescopic cable, namely the fixed position of the cable is changed compared with the traditional telescopic mode.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (7)
1. The crane boom with the single-cylinder five-section arm telescopic mechanism is characterized by comprising a crane boom unit, a telescopic driving unit, an arm stretching inhaul cable unit and an arm shrinking inhaul cable unit;
the lifting arm unit comprises a first arm, a second arm, a third arm, a fourth arm and a fifth arm which are sequentially arranged;
the arm stretching inhaul cable unit comprises three sections of arm stretching inhaul cables, four sections of arm stretching inhaul cables and five sections of arm stretching inhaul cables; one end of the three-section arm extension inhaul cable is connected with the arm tail of one section arm, and the other end of the three-section arm extension inhaul cable is connected with the arm tail of the three section arm; one end of the four-section arm extension inhaul cable is connected with the arm tail of the two sections of arms, and the other end of the four-section arm extension inhaul cable is connected with the arm tail of the four sections of arms; one end of the five-section arm extension inhaul cable is connected with the arm tail of the three-section arm, and the other end of the five-section arm extension inhaul cable is connected with the arm tail of the five-section arm;
the arm retraction cable unit comprises three sections of arm retraction cables and five sections of arm retraction cables; one end of the three-section arm retraction cable is connected with the arm head of one section arm, and the other end of the three-section arm retraction cable is connected with the arm tail of the two sections arm; one end of the arm shrinkage inhaul cable of the five-section arm is connected with the arm head of the five-section arm, and the other end of the arm shrinkage inhaul cable of the five-section arm is connected with the arm tail of the three-section arm.
2. The lift arm of claim 1, wherein the lift arm is configured to move,
the telescopic driving unit adopts an arm extending oil cylinder.
3. The lift arm of claim 2, wherein the lift arm is configured to move,
the head of the arm extending oil cylinder is provided with a first fixed pulley.
4. The lift arm of claim 2, wherein the lift arm is configured to move,
the head of the three-section arm is provided with a second fixed pulley.
5. The lift arm of claim 2, wherein the lift arm is configured to move,
the head of the four-section arm is provided with a third fixed pulley.
6. The lift arm of claim 2, wherein the lift arm is configured to move,
and a fourth fixed pulley is arranged at the tail part of the two sections of arms.
7. The lift arm of claim 2, wherein the lift arm is configured to move,
and a fifth fixed pulley is arranged at the tail part of the three-section arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321867056.8U CN220283413U (en) | 2023-07-16 | 2023-07-16 | Lifting arm with single-cylinder five-section arm telescopic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321867056.8U CN220283413U (en) | 2023-07-16 | 2023-07-16 | Lifting arm with single-cylinder five-section arm telescopic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220283413U true CN220283413U (en) | 2024-01-02 |
Family
ID=89340069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321867056.8U Active CN220283413U (en) | 2023-07-16 | 2023-07-16 | Lifting arm with single-cylinder five-section arm telescopic mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220283413U (en) |
-
2023
- 2023-07-16 CN CN202321867056.8U patent/CN220283413U/en active Active
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