A lifting arm mechanism

Abstract

This utility model discloses a boom lifting mechanism, including a base and a boom mounted on the base. The base has an integrally formed base fixing frame, which is a T-shaped structure composed of a vertical frame and a horizontal frame. A rotating shaft is located within the vertical frame, and a boom fixing frame is fitted onto the rotating shaft. Side hinge seats are located on both sides of the horizontal frame, and side hydraulic cylinders are mounted on the side hinge seats. The other end of each side hydraulic cylinder is hinged to the side of the boom via a connecting seat. The boom fixing frame consists of a sleeve and two sets of boom fixing side plates mounted on the sleeve. The front end of each boom fixing side plate is hinged to the boom, and the rear end is hinged to a main hydraulic cylinder. The other end of the main hydraulic cylinder is hinged to the main body of the boom. This utility model allows for flexible left-right adjustment of the boom, adapting to various working positions and expanding its application range.

Description

Technical Field

[0001] This utility model relates to the field of lifting mechanism manufacturing, and in particular to a lifting mechanism. Background Technology

[0002] Chinese utility model patent with publication number CN109826640A discloses a boom sliding mechanism, which mainly uses a tower lifting cylinder to adjust the overall angle of the boom. The boom left and right adjustment mechanism lacks flexible rotating connecting parts, the adjustment range is limited, it cannot adapt to various working positions, and it is difficult to meet the needs of efficient and diverse operations. Therefore, it is urgent to optimize and improve the boom lifting mechanism structure. Utility Model Content

[0003] The purpose of this invention is to provide an arm-raising mechanism with left and right fine-tuning function of the upper arm.

[0004] The purpose of this utility model is achieved as follows: a lifting arm mechanism includes a base and a main arm placed on the base; the base is provided with an integrally formed base fixing frame, which is a T-shaped structure composed of a vertical frame and a horizontal frame, a rotating shaft is provided inside the vertical frame, and a main arm fixing frame is sleeved on the rotating shaft; side hinge seats are provided on both sides of the horizontal frame, and side hydraulic cylinders are provided on the side hinge seats, the other end of the side hydraulic cylinders being hinged to the side of the main arm through a connecting seat; the main arm fixing frame is composed of a sleeve and two sets of main arm fixing side plates placed on the sleeve, the front end of the main arm fixing side plates being hinged to the main arm, and the rear end being hinged to a main hydraulic cylinder, the other end of the main hydraulic cylinder being hinged to the main body of the main arm.

[0005] Preferably, the base fixing frame is welded to the base, and multiple sets of reinforcing ribs are provided inside and outside the base fixing frame and between the base.

[0006] Preferably, the connecting seat consists of a limiting plate and two sets of mounting plates. The limiting plate has two sets of notches, and the two sets of mounting plates have one set of notches. The two sets of mounting plates are connected and fixed to the limiting plate through the notches. The top of the limiting plate is provided with a baffle. The baffle, the limiting plate and the upper arm are welded and fixed.

[0007] Preferably, a ball joint bearing is provided between the mounting plates, and the ball joint bearing is connected to the output end of the side hydraulic cylinder.

[0008] Preferably, a side rotating base is connected to the side hinge seat, and the side rotating base is hinged to the bottom of the side hydraulic cylinder.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] 1. This utility model uses a base fixing frame welded to the base and adds multiple sets of reinforcing ribs to strengthen the internal and external structural strength of the frame, prevent shaking under force, and ensure overall stability.

[0011] 2. The side hydraulic cylinder, combined with ball joint bearings and a side rotating base, allows the boom to be flexibly adjusted left and right to adapt to various working positions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] The components include: 1. Base; 2. Main boom; 3. Base fixing frame; 301. Vertical frame; 302. Horizontal frame; 4. Rotary shaft; 5. Main boom fixing frame; 501. Sleeve; 502. Main boom fixing side plate; 6. Side hinge seat; 7. Side hydraulic cylinder; 8. Main hydraulic cylinder; 9. Connecting seat; 901. Limiting plate; 902. Mounting plate; 10. Notch; 11. Baffle; 12. Ball joint bearing; 13. Side rotating base. Detailed Implementation

[0014] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0015] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 As shown, a boom lifting mechanism includes a base 1 and a boom 2 placed on the base 1. The base 1 is provided with an integrally formed base fixing frame 3, which is a T-shaped structure composed of a vertical frame 301 and a horizontal frame 302. A rotating shaft 4 is provided inside the vertical frame 301, and a boom fixing frame 5 is sleeved on the rotating shaft 4. Side hinge seats 6 are provided on both sides of the horizontal frame 302, and side hydraulic cylinders 7 are provided on the side hinge seats 6. The other end of the side hydraulic cylinder 7 is hinged to the side of the boom 2 through a connecting seat 9. The boom fixing frame 5 is composed of a sleeve 501 and two sets of boom fixing side plates 502 placed on the sleeve 501. The front end of the boom fixing side plate 502 is hinged to the boom 2, and the rear end is hinged to a main hydraulic cylinder 8. The other end of the main hydraulic cylinder 8 is hinged to the main body of the boom 2.

[0018] The base fixing frame 3 is welded to the base 1. Multiple sets of reinforcing ribs are provided inside and outside the base fixing frame 3 and between it and the base 1. By setting multiple sets of reinforcing ribs, the structural strength of the inside and outside of the base fixing frame can be strengthened, preventing damage to the fixing frame and extending its service life.

[0019] The connecting seat 9 consists of a limiting plate 901 and two sets of mounting plates 902. The limiting plate 901 has two sets of notches 10, and the two sets of mounting plates 902 have one set of notches 10. The two sets of mounting plates 902 are connected and fixed to the limiting plate 901 through the notches 10. The top of the limiting plate 901 is provided with a baffle 11. The baffle 11, the limiting plate 901 and the boom are welded and fixed. The connecting seat is optimized and the connection is achieved through the notches, which can effectively improve the connection strength between the two and further improve the stability.

[0020] A ball joint bearing 12 is provided between the mounting plates 902. The ball joint bearing is connected to the output end of the side hydraulic cylinder 7. The ball joint bearing can realize multi-dimensional rotation at the joint, further adapting to the left and right adjustment of the boom.

[0021] A side rotating base 13 is connected to the side hinge seat 6. The side rotating base 13 is hinged to the bottom of the side hydraulic cylinder 7. The side rotating base can rotate on the side hinge seat, thereby driving the rotation of the side hydraulic cylinder.

[0022] The working principle of this utility model is explained as follows: When the main hydraulic cylinder extends or retracts, it drives the boom to rotate around the hinge point at the front end of the fixed side plate of the boom: when the main hydraulic cylinder extends, it pushes the boom to lift upward, and when it retracts, it pulls the boom to fall downward; when the side hydraulic cylinder moves, its bottom rotates on the side hinge seat along with the side rotating base, and the output end drives the connecting seat through the ball joint bearing, thereby pushing the boom to make slight left and right adjustments to adapt to different working positions.

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. An arm raising mechanism characterized by comprising: The system includes a base and a boom mounted on the base. The base has an integrally formed base fixing frame, which is a T-shaped structure composed of a vertical frame and a horizontal frame. A rotating shaft is located within the vertical frame, and a boom fixing frame is fitted onto the rotating shaft. Side hinge seats are located on both sides of the horizontal frame, and side hydraulic cylinders are mounted on the side hinge seats. The other end of each side hydraulic cylinder is hinged to the side of the boom via a connecting seat. The boom fixing frame consists of a sleeve and two sets of boom fixing side plates mounted on the sleeve. The front end of each boom fixing side plate is hinged to the boom, and the rear end is hinged to a main hydraulic cylinder. The other end of the main hydraulic cylinder is hinged to the main body of the boom.

2. An arm raising mechanism according to claim 1, wherein The base fixing frame is welded to the base, and multiple sets of reinforcing ribs are provided inside and outside the base fixing frame and between the base.

3. The arm raising mechanism according to claim 1, wherein The connecting seat consists of a limiting plate and two sets of mounting plates. The limiting plate has two sets of notches, and the two sets of mounting plates have one set of notches. The two sets of mounting plates are connected and fixed to the limiting plate through the notches. The top of the limiting plate is provided with a baffle. The baffle, the limiting plate and the upper arm are welded and fixed.

4. An arm raising mechanism according to claim 3, wherein A spherical plain bearing is provided between the mounting plates, and the spherical plain bearing is connected to the output end of the side hydraulic cylinder.

5. The arm raising mechanism according to claim 1, wherein A side rotating base is connected to the side hinge seat, and the side rotating base is hinged to the bottom of the side hydraulic cylinder.

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