CN204826667U - Cantilever crane mechanism and engineering machinery - Google Patents

Abstract

The utility model discloses an arm frame mechanism and engineering machinery. The boom mechanism includes a first boom and a second boom hinged to the first boom, a driving part is arranged between the first boom and the second boom, and the first end of the driving part The second end of the driving part is connected to the second boom through the installation shaft hinged on the first arm, the installation shaft includes a driving part installation section, and a The extension section extending sideways; the extension section serves as a limiting component for limiting the second boom; or the extending section is provided with a limiting component for limiting the second boom. The utility model has reliable positioning for the position limiting device of the jib, has low manufacturing difficulty, and is beneficial to the lightweight design of the jib.

Description

An arm frame mechanism and construction machinery

technical field

The utility model mainly relates to the technical field of engineering machinery, in particular to an arm frame mechanism and an engineering machine provided with the arm frame mechanism.

Background technique

For construction machinery such as concrete pump trucks, placing booms, and fire trucks, in order to improve the scope of work and construction flexibility, the boom mechanism generally adopts multi-section joint arms, and oil cylinders are arranged between adjacent joint arms. Drive the relative swing between the two. When the jibs are folded together, in order to ensure reliable positioning between the jibs and avoid interference between the jibs, it is generally necessary to set a limiting device on the jibs.

When two adjacent jibs are not in a vertical plane after being folded together (mostly appear between the curved jib and the straight jib), usually a support seat is extended on each of the two jibs, or only one of them Stretch out a supporting base on a joint arm to limit position. This kind of limit device has complex structure, difficult processing and high cost, which is not conducive to the lightweight design of the boom; Difficulties, resulting in a significant drop in steel utilization.

Utility model content

In view of this, the purpose of this utility model is to provide a boom mechanism, which can solve the defects of complex structure and difficult manufacture in the prior art, or at least one of them.

The arm frame mechanism of the present utility model comprises a first arm frame and a second arm frame hinged with the first arm frame, a drive part is arranged between the first arm frame and the second arm frame, and the drive part The first end of the drive part is hinged on the first arm frame through the installation shaft, and the second end of the driving part is connected to the second arm frame, wherein:

The installation shaft includes a drive part installation section, and an extension section extending from one side of the drive part installation section;

The extending section serves as a limiting component for limiting the second boom;

Or the extending section is provided with a limiting component for limiting the second boom.

Further, a support seat is provided on the extension section, and the support seat is used to limit the folding range of the second arm frame relative to the first arm frame.

Further, the support seat is detachably installed on the extension section, and the position of the support seat along the axial direction of the extension section is adjustable.

Further, the support seat includes a first clamp and a second clamp, the protruding section is arranged in the first clamp and the second clamp, and the first clamp and the second clamp Bolts are set on it.

Further, a stopper is fixed on the second clip, the stopper has a preset height, and the end surface of the stopper is used to contact the bottom plate or the top plate of the second arm frame for limiting.

Further, a limit seat is provided on the second boom, and the limit seat is used to cooperate with the side of the extension section.

Further, the limit seat is a sleeve structure, and the side of the sleeve structure is slotted to facilitate the entry and exit of the extension section.

Further, the boom mechanism has 3-7 joints, the first boom is the second joint, and the second boom is the third joint and has a turning structure.

In another aspect of the present utility model, a construction machine is provided, and the construction machine is provided with any one of the aforementioned boom mechanisms.

Further, the construction machinery is a concrete pump truck, a boom or a fire truck.

In the boom mechanism and engineering machinery of the present utility model, the installation shaft of the drive part includes a drive part installation section and an extension section extending from one side of the drive section installation section, and the extension section can be used as a limit for the second boom The limiting part; or a limiting part for limiting the second boom can be installed on the extension section. The utility model has a simple structure and reliable positioning for the position limiting device of the jib, can reduce the difficulty of making the jib support, is beneficial to the lightweight design of the jib, improves the utilization rate of materials, and reduces the cost.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic structural view of a boom mechanism of an embodiment of the present invention;

Figure 2 is an enlarged view of area A in Figure 1;

Fig. 3 is a structural schematic diagram of an installation shaft according to an embodiment of the present invention.

Explanation of reference signs:

1 first boom

2 second boom

3 protruding sections

4 support seat

5 first clamp

6 second clamp

7 stops

8 Mounting section of drive unit

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In the present invention, the terms "first" and "second" are mainly used to distinguish different components, but do not specifically limit the components.

FIG. 1 is a schematic structural view of a boom mechanism according to an embodiment of the present invention, and FIG. 2 is an enlarged view of area A in FIG. 1 . The boom mechanism in this embodiment at least includes a first boom 1 and a second boom 2 . It should be clear that the number of joint arms of the boom mechanism can be more, preferably 3-7 joints, each joint arm is connected in series, and adjacent joint arms can swing relative to each other. Preferably, the first jib 1 is the second jib, and the second jib 2 is the third jib and has a turning structure, so as to solve the limit problem of the turning jib.

The second boom 2 is hinged with the first boom 1, and the first boom 1 and the second boom 2 are provided with a driving part, which is used to drive the first boom 1 and the second boom 2. Swing relative to each other, so as to realize the expansion and folding of the boom. The driving part is preferably an oil cylinder, and of course it can also be an air cylinder or other possibilities. The two ends of the driving part are hinged, the first section of which is hinged on the first arm frame 1 through the installation shaft, and the second section is connected to the second arm frame 2 through the installation shaft. The aforementioned second segment can be connected to the second arm frame 2 directly or through a connecting rod.

The installation shaft of this embodiment is improved compared to the prior art. Specifically, referring to FIG. 3 , the installation shaft includes a drive part installation section 8 and an extension section 3 extending from one side of the drive part installation section 8 . The above-mentioned driving part installation section 8 is mainly used for installing the hinge seat of the driving part, and the above-mentioned extending section 3 is used as a limiting part for limiting the second boom 2 . The protruding section 3 is directly in contact with the second arm frame 2 (or the components arranged thereon) to realize the positioning purpose of the arm frame, and this embodiment can position the second arm frame 2 in multiple possible directions.

As another embodiment, the extending section 3 is provided with a limiting part for limiting the second boom 2, and the limiting part is in contact with the second boom 2 (or a part arranged on it) to realize position. Of course, the limiting component can also support the second boom 2 . It should be clear that as long as the extension section 3 is used to limit the position of the boom, it is included in the technical solution of the present invention.

More specifically, in the embodiment shown in FIGS. 1 and 2 , a support seat 4 is provided on the extension section 3 , and the support seat 4 is used to limit the folding range of the second arm frame 2 relative to the first arm frame 1 , the support seat 4 can also play a certain role in supporting the second arm frame 2 . This embodiment is applicable to the situation that the two booms are not too compact when they are folded together. In the orientation shown in FIG. 1 , the second boom 2 swings back clockwise, and its bottom plate moves from top to bottom until it contacts the end surface of the support base 4 .

Preferably, the support base 4 is detachably mounted on the extension section 3, which facilitates the simplification of the manufacturing and assembly process. In addition, the position of the supporting seat 4 along the axial direction of the extension section is adjustable. Specifically, the support seat 4 includes a first clamp 5 and a second clamp 6 shown in FIG. The second clamp 6 is provided with bolts.

The second clip 6 can be directly used to contact with the second arm frame 2. In order to optimize the space layout, it is preferable to fix a stopper 7 on the second clip 6. The stopper 7 has a preset height, and the end surface of the stopper 7 It is used to limit the contact with the bottom plate or the top plate of the second arm frame 2 . The block 7 and the second clip 6 can be formed integrally or separately.

The device for limiting the position of the jib in the aforementioned embodiments has a simple structure and reliable positioning, which can reduce the difficulty of making the jib support, facilitate the lightweight design of the jib, improve the utilization rate of materials, and reduce the cost.

As another embodiment, when the structure between the two booms is compact after being folded, the second boom 2 swings back from the left and right direction (instead of the above-mentioned up and down direction). position, and a limit seat can be set on the second boom, and the limit seat is used to cooperate with the side of the extension section 3.

The limiting seat can have various possible structures. In order to further reduce the difficulty of manufacturing and save costs, it is preferable that the limiting seat is a sleeve structure, and the side of the sleeve structure is slotted to facilitate the entry and exit of the protruding section 3 . The sleeve structure can pass through the second arm frame 2 , and can also be welded on the top or bottom plate of the second arm frame 2 .

It should be clear that the foregoing is only a typical description of the jib mechanism including two jibs. When the number of jibs is three or more, the corresponding jibs are also provided with extensions 3 for positioning. Personnel know how to arrange on the corresponding installation shaft, and this article will not repeat them.

In addition to the jib mechanism of the aforementioned embodiments, the utility model also provides a construction machine provided with the aforementioned jib mechanism. The engineering machinery is preferably a concrete pump truck, a boom or a fire truck. Of course, the engineering machinery may also be other equipment that may adopt a multi-stage boom mechanism. For the structure of other parts of construction machinery, existing and improved technologies can be referred to.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. a beam mechanism, comprise the first jib (1) and second jib (2) hinged with described first jib (1), drive division is provided with between described first jib (1) and the second jib (2), the first end of described drive division is articulated with on described first jib (1) by installation shaft, second end of described drive division is connected on described second jib (2), it is characterized in that:

Described installation shaft comprises drive division construction section (8), and from the section of stretching out (3) that described drive division construction section (8) side extends;

The described section of stretching out (3) is as the limiting component spacing to described second jib (2);

Or described in the section of stretching out (3) is provided with the limiting component spacing to described second jib (2).

2. beam mechanism according to claim 1, it is characterized in that, the described section of stretching out (3) is provided with supporting seat (4), described supporting seat (4) is for limiting the folding amplitude of described second jib (2) relative to the first jib (1).

3. beam mechanism according to claim 2, it is characterized in that, in the section of stretching out (3) described in described supporting seat (4) is removably mounted on, described supporting seat (4) is adjustable along the position that the section of stretching out (3) is axial.

4. beam mechanism according to claim 3, it is characterized in that, described supporting seat (4) comprises the first clip (5) and the second clip (6), the described section of stretching out (3) is arranged in described first clip (5) and the second clip (6), and described first clip (5) and the second clip (6) are provided with bolt.

5. beam mechanism according to claim 4, it is characterized in that, described second clip (6) is fixed with block (7), described block (7) has preset height, and the end face of described block (7) is for spacing with the base plate or top plate contact of described second jib (2).

6. beam mechanism according to claim 1, is characterized in that, described second jib (2) is provided with limit base, and described limit base is used for the side-fit with the described section of stretching out (3).

7. beam mechanism according to claim 6, is characterized in that, described limit base is tube-in-tube structure, the groove at side surface of described tube-in-tube structure so that described in the turnover of the section of stretching out (3).

8. the beam mechanism according to any one of claim 1-7, it is characterized in that, the quantity of the joint arm of described beam mechanism is 3-7 joint, and described first jib (1) is second joint arm, and described second jib (2) is the 3rd joint arm and is turning structure.

9. an engineering machinery, is characterized in that, described engineering machinery is provided with the beam mechanism described in any one of claim 1-8.

10. engineering machinery according to claim 9, is characterized in that, described engineering machinery is concrete mixer, boom or fire fighting truck.