Foldable aluminum suspension arm

Abstract

The utility model relates to the technical field of lazy arms, in particular to a foldable aluminum lazy arm which comprises a support, a lazy arm vertical rod and a lazy arm cross beam, the support is rotatably connected and fixed with the bottom of the lazy arm vertical rod through a lower folding joint, and an L-shaped structure is formed between the lazy arm vertical rod and the lazy arm cross beam. The top of the lifting arm vertical rod is rotationally connected and fixed through an upper folding joint; the lower folding joint comprises a movable groove of a U-shaped structure and a first plug pin shaft, the movable groove is rotationally connected with the bottom of the lifting arm vertical rod through a first fixing shaft, and the bottom of the lifting arm vertical rod and the movable groove are located in an inserted mode through the first plug pin shaft; the upper folding joint comprises positioning plates and a second bolt shaft which are located on the two sides of the suspension arm vertical rod and the suspension arm cross beam, the suspension arm vertical rod is fixedly connected with the bottoms of the positioning plates on the two sides, the other ends of the positioning plates are rotationally connected with the suspension arm cross beam through a second fixing shaft, and the tail of the suspension arm cross beam and the second bolt shaft are located in an inserted mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hanging arm technical field, concretely relates to a foldable aluminium hanging arm. BACKGROUND

[0002] The hanging arm is an important component of the crane, aerial working truck and other equipment, is mainly used for hanging and carrying heavy objects, through the extension and rotation and so on, will heavy object from one position to another, plays the key role in the many fields such as building construction, logistics carrying, equipment installation.

[0003] However, the existing hanging arm has some deficiencies. On the one hand, most of the hanging arm structure is fixed, which occupies a large space during transportation and storage, has high transportation cost, and is not conducive to flexible deployment and field operation of the equipment. On the other hand, the connecting structure of the traditional hanging arm is complex, and the assembly and disassembly process is cumbersome, which requires professional tools and a large amount of manpower, resulting in low efficiency of maintenance and repair of the equipment and increasing the use cost. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a foldable aluminium hanging arm to solve the problems of large space occupation and difficult assembly and disassembly of the existing hanging arm during transportation and storage.

[0005] To solve the above technical problems, the utility model provides a technical scheme of a foldable aluminium hanging arm, which comprises a support, a hanging arm vertical rod and a hanging arm cross beam. The hanging arm vertical rod is fixed with an electric motor for hanging arm work on the side away from the hanging arm cross beam. The support is rotatably connected and fixed with the bottom of the hanging arm vertical rod through a lower folding joint. The hanging arm vertical rod and the hanging arm cross beam form an L-shaped structure, and the top of the hanging arm vertical rod is rotatably connected and fixed through an upper folding joint. The lower folding joint comprises a movable slot with a U-shaped structure and a first bolt shaft. The movable slot is rotatably connected with the bottom of the hanging arm vertical rod through a first fixed shaft, and the bottom of the hanging arm vertical rod is positioned and connected with the movable slot through the first bolt shaft. The upper folding joint comprises positioning plates on both sides of the hanging arm vertical rod and the hanging arm cross beam and a second bolt shaft. The hanging arm vertical rod is fixedly connected with the bottoms of the positioning plates on both sides, and the other ends of the positioning plates are rotatably connected with the hanging arm cross beam through a second fixed shaft. The tail of the hanging arm cross beam is positioned and connected with the second bolt shaft.

[0006] As a preferred technical scheme of the utility model, the hanging arm vertical rod and the hanging arm cross beam are rotatably connected with an inclined support rod on the inner side of the L-shaped structure, and the inclined support rod and the bottom of the hanging arm cross beam are fixedly connected through a third bolt shaft.

[0007] As a preferred technical scheme of the utility model, the hanging arm vertical rod is provided with a pad on one side of the movable slot, and the pad is in contact with the lower end surface of the hanging arm cross beam in the folded state.

[0008] As a preferred technical scheme of the utility model, the vertical pin hole and the storage pin hole which are respectively inserted and positioned with the first bolt shaft are arranged on one side and above the first fixed shaft of the vertical rod of the hanging arm, wherein the vertical pin hole is arranged on the side close to the horizontal beam of the hanging arm, and the storage pin hole is arranged above the first fixed shaft.

[0009] As a preferred technical scheme of the utility model, when the horizontal beam of the hanging arm is perpendicular to the vertical rod of the hanging arm, the lower end surface of the horizontal beam of the hanging arm is abutted with the upper end surface of the vertical rod of the hanging arm, and the width and thickness of the horizontal beam of the hanging arm are same as those of the vertical rod of the hanging arm.

[0010] As a preferred technical scheme of the utility model, the positioning plate is in the structure of the straight angle equilateral triangle plate, and the height of the positioning plate is greater than the height of the vertical rod of the hanging arm and the horizontal beam of the hanging arm.

[0011] As a preferred technical scheme of the utility model, the limiting pin hole which is inserted and positioned with the second bolt shaft is arranged on the straight angle close to the positioning plate of the tail of the horizontal beam of the hanging arm, and the second insertion hole is arranged on the limiting pin hole of the positioning plate.

[0012] As a preferred technical scheme of the utility model, the movable groove is provided with the stop pin for assisting in limiting the vertical rod of the hanging arm above the first fixed shaft.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1. The foldable aluminum hanging arm can be folded through the design of the lower folding joint and the upper folding joint, effectively reduces the occupied space of the hanging arm in the transportation and storage process, reduces the transportation cost, improves the flexibility and deployment efficiency of the equipment.

[0015] 2. The foldable aluminum hanging arm is simple and fast in the assembling and disassembling process of the hanging arm through the folding joint structure and the insertion and positioning mode, does not need complex tools and professional personnel, greatly improves the maintenance and repair efficiency of the equipment, and reduces the use cost. DRAWINGS

[0016] Figure 1 The utility model discloses a foldable aluminum hanging arm Figure 1 .

[0017] Figure 2 The utility model discloses a foldable aluminum hanging arm Figure 2 .

[0018] Figure 3 The utility model discloses a foldable aluminum hanging arm

[0019] Figure 4 The utility model discloses a state transformation of foldable aluminum hanging arm Figure 1 .

[0020] Figure 5 The utility model discloses a state transformation of foldable aluminum hanging arm Figure 2 .

[0021] As shown in the figure:

[0022] 1, support; 2, hanging arm vertical rod; 3, hanging arm crossbeam; 4, motor; 5, movable groove; 6, first bolt shaft; 7, first fixed shaft; 8, positioning plate; 9, second bolt shaft; 10, second fixed shaft; 11, oblique support rod; 12, third bolt shaft; 13, cushion block; 14, vertical pinhole; 15, storage pinhole; 16, first plug-in hole; 17, limiting pinhole; 18, second plug-in hole; 19, stop pin. Specific embodiments

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0024] In the description of the utility model, it is necessary to point out that, unless there are explicit provisions and limitations, the terms "mount", "provided with", "connect" and the like should be understood broadly, for example, "connect", can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through intermediate medium, and can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Embodiment 1:

[0026] As shown in the description accompanying drawings Figures 1-3 A foldable aluminum hanging arm includes support 1, hanging arm vertical rod 2 and hanging arm crossbeam 3, wherein the side of hanging arm vertical rod 2 away from hanging arm crossbeam 3 is fixed with motor 4 for hanging arm work.

[0027] The utility model discloses a support 1 with the bottom of the boom vertical rod 2 is connected and fixed through the lower folding joint rotation, and the boom vertical rod 2 and boom crossbeam 3 form L type structure, and the top of boom vertical rod 2 is connected and fixed through the upper folding joint rotation, and when boom crossbeam 3 is perpendicular with boom vertical rod 2, the lower end surface of boom crossbeam 3 is in abutment with the upper end surface of boom vertical rod 2, and the width and thickness of boom crossbeam 3 are same with boom vertical rod 2, and the boom vertical rod 2 and boom crossbeam 3 are connected with the inclined support rod 11 in the inside of L type structure rotation, and the inclined support rod 11 is fixed with the bottom of boom crossbeam 3 through the third bolt shaft 12 insertion.

[0028] The utility model discloses a support 1 with the bottom of the boom vertical rod 2 is connected and fixed through the lower folding joint rotation, and the boom vertical rod 2 and boom crossbeam 3 form L type structure, and the top of boom vertical rod 2 is connected and fixed through the upper folding joint rotation, and when boom crossbeam 3 is perpendicular with boom vertical rod 2, the lower end surface of boom crossbeam 3 is in abutment with the upper end surface of boom vertical rod 2, and the width and thickness of boom crossbeam 3 are same with boom vertical rod 2, and the boom vertical rod 2 and boom crossbeam 3 are connected with the inclined support rod 11 in the inside of L type structure rotation, and the inclined support rod 11 is fixed with the bottom of boom crossbeam 3 through the third bolt shaft 12 insertion.

[0029] The utility model discloses a support 1 with the bottom of the boom vertical rod 2 is connected and fixed through the lower folding joint rotation, and the boom vertical rod 2 and boom crossbeam 3 form L type structure, and the top of boom vertical rod 2 is connected and fixed through the upper folding joint rotation, and when boom crossbeam 3 is perpendicular with boom vertical rod 2, the lower end surface of boom crossbeam 3 is in abutment with the upper end surface of boom vertical rod 2, and the width and thickness of boom crossbeam 3 are same with boom vertical rod 2, and the boom vertical rod 2 and boom crossbeam 3 are connected with the inclined support rod 11 in the inside of L type structure rotation, and the inclined support rod 11 is fixed with the bottom of boom crossbeam 3 through the third bolt shaft 12 insertion.

[0030] The utility model discloses a support 1 with the bottom of the boom vertical rod 2 is connected and fixed through the lower folding joint rotation, and the boom vertical rod 2 and boom crossbeam 3 form L type structure, and the top of boom vertical rod 2 is connected and fixed through the upper folding joint rotation, and when boom crossbeam 3 is perpendicular with boom vertical rod 2, the lower end surface of boom crossbeam 3 is in abutment with the upper end surface of boom vertical rod 2, and the width and thickness of boom crossbeam 3 are same with boom vertical rod 2, and the boom vertical rod 2 and boom crossbeam 3 are connected with the inclined support rod 11 in the inside of L type structure rotation, and the inclined support rod 11 is fixed with the bottom of boom crossbeam 3 through the third bolt shaft 12 insertion.

[0031] Embodiment 2:

[0032] As the description attached Figures 4-5As shown, the first pin shaft 6, the second pin shaft 9 and the third pin shaft 12 are pulled out, the boom beam 3 is rotated around the second fixed shaft 10, the boom upright 2 is rotated to one side around the first fixed shaft 7, the boom beam 3 and the boom upright 2 are in parallel state, the whole boom is folded up, and the cushion block 13 abuts against the lower end surface of the boom beam 3, facilitating transportation and storage (the first pin shaft 6 can be positioned by means of the vertical pin hole 14 and the storage pin hole 15).

[0033] In the specific implementation, the movable groove 5 of the lower folding joint is rotatably connected with the bottom of the boom upright 2 through the first fixed shaft 7, the first pin shaft 6 is inserted and positioned, when folding is needed, the first pin shaft 6 is pulled out, and the boom upright 2 can be rotated around the first fixed shaft 7; the positioning plate 8 of the upper folding joint is matched with the second fixed shaft 10 and the second pin shaft 9, the boom beam 3 is rotatably connected with the positioning plate 8, and the positioning and folding of the boom beam 3 are realized by inserting and pulling out the second pin shaft 9.

[0034] The diagonal support rod 11 is connected with the boom upright 2 and the boom beam 3 through the third pin shaft 12 when the boom is unfolded for work, plays a supporting and reinforcing role, and guarantees the stability and strength of the boom in the working process. The cushion block 13 abuts against the lower end surface of the boom beam 3 in the folded state, plays a protection role, prevents the boom beam 3 from shaking and colliding, and provides storage space for the diagonal support rod 11. The pin hole and the insertion hole corresponding to the pin shaft are designed, and the accurate positioning and connection of the components in the unfolding and folding process are ensured.

[0035] The above describes the utility model and its implementation mode, which is not limited, and the actual structure is not limited to the one shown in the specific implementation mode. In general, if a person skilled in the art is inspired, without departing from the purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme should belong to the protection scope of the utility model.

Claims

1. A foldable aluminum boom, comprising a support (1), a boom upright (2), and a boom crossbeam (3), wherein a motor (4) for boom operation is fixed on the side of the boom upright (2) away from the boom crossbeam (3), characterized in that: The support (1) and the bottom of the boom upright (2) are rotatably connected and fixed through the lower folding joint. The boom upright (2) and the boom crossbeam (3) form an L-shaped structure, and the top of the boom upright (2) is rotatably connected and fixed through the upper folding joint. The lower folding joint includes a U-shaped movable groove (5) and a first pin shaft (6), wherein the movable groove (5) is rotatably connected to the bottom of the boom upright (2) through a first fixed shaft (7), and the bottom of the boom upright (2) is inserted and positioned into the movable groove (5) through the first pin shaft (6); The upper folding joint includes positioning plates (8) and a second pin shaft (9) located on both sides of the boom upright (2) and boom crossbeam (3). The boom upright (2) is fixedly connected to the bottom of the positioning plates (8) on both sides, and the other end of the positioning plate (8) is rotatably connected to the boom crossbeam (3) through a second fixed shaft (10). The tail of the boom crossbeam (3) is inserted and positioned by the second pin shaft (9).

2. The foldable aluminum boom according to claim 1, characterized in that: The boom upright (2) and boom crossbeam (3) are rotatably connected to the inside of the L-shaped structure by an inclined support rod (11), and the inclined support rod (11) and the bottom of the boom crossbeam (3) are fixed by a third pin shaft (12).

3. The foldable aluminum boom according to claim 1, characterized in that: The boom upright (2) is provided with a pad (13) on one side of the movable groove (5), and the pad (13) abuts against the lower end face of the boom crossbeam (3) in the folded state.

4. A foldable aluminum boom according to claim 1, characterized in that: The boom upright (2) is provided with a vertical pin (14) and a receiving pin (15) on one side and above the first fixed shaft (7), respectively, for insertion and positioning with the first pin shaft (6). The vertical pin (14) is located on the side close to the boom crossbeam (3), and the receiving pin (15) is located above the first fixed shaft (7). The movable groove (5) is provided with corresponding first insertion holes (16) at the vertical pin (14) and the receiving pin (15).

5. A foldable aluminum boom according to claim 1, characterized in that: When the boom beam (3) is perpendicular to the boom upright (2), the lower end face of the boom beam (3) abuts against the upper end face of the boom upright (2), and the boom beam (3) and the boom upright (2) have the same width and thickness.

6. A foldable aluminum boom according to claim 1, characterized in that: The positioning plate (8) is a plate structure of right-angled equilateral triangle, and the height of the positioning plate (8) is greater than the combined height of the boom upright (2) and the boom crossbeam (3).

7. A foldable aluminum boom according to claim 6, characterized in that: The tail of the boom beam (3) is provided with a limiting pin (17) at a right angle near the positioning plate (8) for insertion and positioning with the second pin shaft (9), and the positioning plate (8) is provided with a corresponding second insertion hole (18) at the limiting pin (17).

8. A foldable aluminum boom according to claim 1, characterized in that: The movable groove (5) is located above the first fixed shaft (7) and is equipped with a stop pin (19) for auxiliary limiting of the boom upright (2).

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