Multifunctional fly jib mechanism
By designing a multi-functional jib mechanism, which combines a rotating gooseneck boom and pulley blocks, the problem of poor adaptability of existing crane jibs to operation in confined spaces has been solved, and the multi-functional operation capability of the hook and winch for lifting heavy loads has been realized.
Patent Information
- Application Number
- CN202520458458.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The existing adjustable boom of the crane's jib is a straight boom structure, which cannot simultaneously perform hook operation and hoisting winch operation, resulting in poor adaptability to operation in confined spaces.
Design a multi-functional auxiliary boom mechanism, comprising a rotating gooseneck boom and a pulley block, connected to a manual boom via a pin shaft, enabling angle adjustment and forward/reverse assembly of the rotating gooseneck boom, and operation in conjunction with a hook and hoisting winch, equipped with a wireless height limit device and a wedge sleeve to prevent the pulley block from slipping.
It enables cranes to perform multi-functional operations in confined spaces, allowing them to simultaneously lift loads with hooks and winches, thus improving their adaptability to operation in narrow spaces.
Smart Images
Figure CN223920904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cranes, and in particular to a multifunctional auxiliary boom mechanism. Background Technology
[0002] The adjustable boom of the existing crane jib is a straight boom structure, which can only be used to install hooks for operation. It cannot be combined with the crane hoisting winch for operation, and has poor adaptability to the working environment, failing to meet the needs of operation in environments with low ceilings.
[0003] Therefore, it is necessary to develop new types of jib mechanisms to improve the environmental adaptability of crane jib and solve the problem that existing crane technologies cannot operate in confined spaces. Utility Model Content
[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a multifunctional auxiliary boom mechanism that can simultaneously realize hoisting winch operation and hook operation. The gooseneck boom can be assembled in both forward and reverse directions and its angle can be adjusted.
[0005] Technical Solution: This utility model discloses a multifunctional auxiliary boom mechanism, characterized in that: it includes a manual boom with several mounting holes for mounting a rotating gooseneck boom; the rotating gooseneck boom is connected to the manual boom via pins passing through the mounting holes; the mounting angle of the rotating gooseneck boom can be changed by changing the mounting holes; a pulley block or hook is mounted on the rotating gooseneck boom; a connecting plate for mounting a wireless height limiting device and a wedge sleeve is provided on the rotating gooseneck boom; the rotating gooseneck boom has mounting holes for mounting rope stops, and both ends of the rope stops pass through the mounting holes and are connected to a fixing pin and a washer.
[0006] The pin passes through the mounting hole and is then secured by a snap ring.
[0007] The rotating goose-head arm is provided with holes for installing pulley blocks.
[0008] The pulley block is provided with spacers on both sides to prevent it from sliding left and right on the shaft.
[0009] The fixing pin and washer limit the rope stop to prevent it from slipping out.
[0010] The rotating goose-head arm is provided with two mounting points for installing hooks.
[0011] The pulley block and the hook cannot be installed at the same time.
[0012] The manual boom is mounted on the auxiliary boom of the crane.
[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention can be equipped with a hook for direct lifting operations, or it can be used with the hoisting winch of a crane for lifting operations. At the same time, the gooseneck boom can be assembled in both directions and the angle can be adjusted, making it convenient for the crane to adapt to different operating scenarios. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the installation structure of the pulley block of this utility model;
[0016] Figure 3 This is a schematic diagram of the installation structure of the hook of this utility model;
[0017] Figure 4 This is a schematic diagram of the hoisting operation of this utility model. Figure 1 ;
[0018] Figure 5 This is a schematic diagram of the hoisting operation of this utility model. Figure 2 ;
[0019] In the diagram, 1 is the manual boom; 2 is the rotating gooseneck boom; 3 is the pin; 4 is the pulley block; 5 is the spacer; 6 is the wireless height limit device; 7 is the wedge sleeve; 8 is the rope stop; 9 is the fixing pin; 10 is the hook; 11 is the snap ring; and 12 is the washer. Detailed Implementation
[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0021] The multifunctional auxiliary boom mechanism of this utility model has a manual boom 1 with several mounting holes for mounting a rotating gooseneck boom 2. The rotating gooseneck boom 2 is connected to the manual boom 1 through a pin 3 passing through the mounting holes. The mounting angle of the rotating gooseneck boom 2 can be changed by changing the mounting holes. A pulley block 4 or a hook 10 is installed on the rotating gooseneck boom 2. The rotating gooseneck boom 2 is provided with a connecting plate for mounting a wireless height limiting device 6 and a wedge sleeve 7. The rotating gooseneck boom 2 has a mounting hole for mounting a rope stop 8. The two ends of the rope stop 8 pass through the mounting hole and are connected to a fixing pin 9 and a washer 12.
[0022] The pin 3 passes through the mounting hole and is fixed by the retaining spring 11. The rotating gooseneck arm 2 has holes for mounting the pulley block 4. Spacers 5 are provided on both sides of the pulley block 4 to prevent it from sliding left and right on the shaft. The fixing pin 9 and washer 12 limit the rope stop 8 to prevent it from slipping out. The rotating gooseneck arm 2 has two mounting points for mounting the hook 10. The pulley block 4 and the hook 10 cannot be installed simultaneously. The manual boom 1 is mounted on the crane's auxiliary boom.
[0023] This utility model discloses a multifunctional auxiliary boom mechanism that provides two lifting methods: hook lifting and winch lifting. When lifting with the hook, a hook 10 is installed on the rotating gooseneck boom 2. The structure at this time mainly includes a manual boom 1, a rotating gooseneck boom 2, a pin 3, and the hook 10. When lifting with the winch, a pulley block 4 is installed on the rotating gooseneck boom 2. The structure at this time mainly includes a manual boom 1, a rotating gooseneck boom 2, a pin 3, a pulley block 4, a spacer 5, a wireless height limit device 6, a wedge sleeve 7, a rope stop 8, and a fixing pin 9.
[0024] The aforementioned components allow for adjustment of the lifting capacity of both the winch and hook on the manual boom, thus expanding the two functions of the manual boom. When the device operates using a hoisting winch, the hoisting wire rope lifts the load via a pulley assembly. When the device uses a hook for lifting, the pulley assembly is removed, and the hook is installed; there are two hook installation points. The gooseneck structure of the auxiliary boom mechanism and the guiding mechanism composed of the gooseneck and pulleys are the key technical points of this utility model, including the assembly type based on this mechanism, all of which are innovative points of this utility model. By combining the winch pulley assembly with the gooseneck, this utility model adds the lifting capacity of the winch to meet the original hook lifting capacity, realizing two lifting methods on the rotating gooseneck and enhancing the expanded functionality of the gooseneck.
[0025] This invention features a multi-functional auxiliary boom mechanism. Utilizing a pulley system mounted on a rotating gooseneck boom, it guides and extends the wire rope along the boom. Equipped with a wireless height limiter, it prevents the wire rope from over-winding, allowing the auxiliary boom to simultaneously perform hook operations and hoisting winch operations. By changing the installation direction and adjusting the installation angle of the gooseneck boom, this invention enables the boom to operate in various confined spaces. Through hoisting winch operations, lifting operations can be performed without adjusting the crane's main boom, requiring less space and improving the crane's adaptability to operating in confined environments.
Claims
1. A multifunctional sub-arm mechanism characterized by: Including manual arm (1), manual arm (1) is provided with several installation holes for installing rotating goose head arm (2), rotating goose head arm (2) is connected with manual arm (1) by pin shaft (3) passing through installation hole, and rotating goose head arm (2) realizes the transformation of installation angle by replacing installation hole;The pulley block (4) or lifting hook (10) is installed on the rotating goose head arm (2), and the connecting plate for installing wireless height limiting device (6) and wedge sleeve (7) is arranged on the rotating goose head arm (2);The rotating goose head arm (2) is provided with installation hole body for installing rope block (8), and the both ends of rope block (8) are connected with fixed pin (9) and washer (12) after passing through installation hole body.
2. The multifunctional sub-arm mechanism according to claim 1, characterized in that: The pin shaft (3) is fixed by snap spring (11) after passing through the installation hole.
3. The multifunctional sub-arm mechanism according to claim 1, characterized in that: The rotating goose head arm (2) is provided with hole body for installing pulley block (4).
4. The multifunctional sub-arm mechanism according to claim 3, characterized in that: The pulley block (4) is provided with spacer sleeve (5) on both sides to prevent the pulley block (4) from sliding left and right on the shaft.
5. The multifunctional sub-arm mechanism according to claim 1, characterized in that: The fixed pin (9) and washer (12) limit the rope block (8) to prevent it from sliding out.
6. The multifunctional sub-arm mechanism according to claim 1, characterized in that: The rotating goose head arm (2) is provided with installation point for installing lifting hook (10), and the number of installation points is two.
7. The multifunctional sub-arm mechanism according to claim 1, characterized in that: The pulley block (4) and the lifting hook (10) cannot be installed at the same time.
8. The multifunctional sub-arm mechanism according to any one of claims 1-7, characterized in that: The manual arm (1) is arranged on the crane auxiliary arm.