A double-foldable hydraulic fly arm structure

Abstract

A double-foldable hydraulic flying boom structure relates to the technical field of lifting cranes, wherein a connecting piece is installed in a connecting frame, and a flying boom is installed on the connecting piece, a positioning mechanism is installed on one side of the fixed end of the main arm, and the position of the positioning mechanism corresponds to the position of the clamping end of the flying boom, the position of the central axis of the connecting piece coincides with the position of the central axis of the main arm, and connecting plates are fixedly connected on both sides of the connecting piece body; the double-foldable hydraulic flying boom structure described in the present invention enables the flying boom to be folded sideways and downwards, and the folding mode of the flying boom can be selected according to actual conditions. By folding the flying boom downwards, the overall space size of the machine is reduced, which is suitable for short-term transfer of sites, convenient for staff to operate, and saves time in switching back and forth. When the main arm needs to be lifted, the flying boom is folded sideways, and the position of the flying boom is fixed by the positioning mechanism to avoid the flying boom affecting the work of the main arm.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a double-foldable hydraulic fly arm structure. Background Art

[0002] The fly arm of the existing crane is folded and stored and fixed to one side of the main arm when the fly arm is not in use. This side folding method of the fly arm has the following problems in actual use: when the fly arm lifting at one construction site is completed and the crane needs to be temporarily transferred to the next construction site to continue using the fly arm for lifting, the side folding method has great limitations. Workers need to manually and mechanically rotate the fly arm to fix it to the front end of the main arm and disassemble the fly arm to fold and store it to one side of the main arm, switch the hydraulic circuit and control system between the main arm and the fly arm, and repeatedly switch between the two operations, which is labor-intensive and time-consuming, reduces work efficiency, and also increases the workload of workers. Summary of the Invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a double-foldable hydraulic flying arm structure. The present invention enables the flying arm to be folded in two ways: side folding and bottom folding. The folding mode of the flying arm can be selected according to actual conditions. By folding the flying arm downward, the overall space size of the machine is reduced, which is suitable for short-term transfer of sites, convenient for staff to operate, and saves time for switching back and forth. When the main arm needs to be lifted, the flying arm is folded sideways and the position of the flying arm is fixed by a positioning mechanism to prevent the flying arm from affecting the operation of the main arm.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A double-foldable hydraulic flying boom structure includes a main boom, and two connecting frames are respectively installed on both sides of the telescopic end of the main boom, a connecting piece is installed in the connecting frame, and the flying boom is installed on the connecting piece, and a positioning mechanism is installed on one side of the fixed end of the main boom, and the position of the positioning mechanism corresponds to the position of the flying boom clamping end.

[0006] The position of the central axis of the connecting member coincides with the position of the central axis of the main arm.

[0007] The connecting member includes a connecting member body, a connecting plate and a support plate. The two sides of the connecting member body are respectively fixedly connected with connecting plates. One end of the connecting plate is connected to the connecting frame through a pin shaft. The support plate is fixedly connected between the upper and lower connecting plates.

[0008] The positioning mechanism includes a positioning plate, a mounting plate, a guide rail and a rotating base. The positioning plate is located on one side of the main arm and is fixedly connected. The rotating base and the mounting plate are installed on the positioning plate, and the rotating base is located on the lower side of the mounting plate. The guide rail is installed on the mounting plate. The positions of the guide rail and the rotating base correspond to the position of the flying arm clamping end.

[0009] The position of the central axis of the flying arm coincides with the position of the central axis of the connecting piece.

[0010] The flying arm includes a first connecting shaft, a second connecting shaft, a first connecting rod, a third connecting shaft, a limiting plate, a fourth connecting shaft, a second connecting rod, a clamping plate, a mounting frame, an insertion frame, an adjusting wheel, a fifth connecting shaft, a fluctuation oil cylinder, a flying arm body and a handle, the two sides of one end of the flying arm body are respectively connected to the limiting plate through the fourth connecting shaft, the middle part of the limiting plate is connected to the second connecting rod through the third connecting shaft, the upper half of the limiting plate is connected to the connecting member body through the second connecting shaft, the first connecting shaft is located on the connecting member body and is rotatably connected, the two ends of the first connecting shaft respectively pass through the connecting member body and are connected to one end of the first connecting rod, and the other end of the first connecting rod One end is connected to one end of the second connecting rod through the fifth connecting shaft, one end of the ups and downs oil cylinder is located on the first connecting rod and is rotatably connected, and the other end of the ups and downs oil cylinder is hinged to the flying arm body, and an insertion frame is fixedly connected to one side of the flying arm body, and the position of the insertion frame corresponds to the position of the rotating base and is contacted and connected, a mounting frame is fixedly connected to the flying arm body, and an adjustment wheel is rotatably connected in the mounting frame, and the position of the adjustment wheel corresponds to the position of the guide rail and is contacted and connected, a handle is installed on the end of the flying arm body connected to the ups and downs oil cylinder, and the two ends of the fifth connecting shaft and the third connecting shaft are respectively clamped with a clamping plate, and the clamping plate is located at the second connecting rod and fixedly connected.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0012] The double-foldable hydraulic flying boom structure described in the present invention enables the flying boom to be folded in two ways: side folding and bottom folding. The folding mode of the flying boom can be selected according to actual conditions. By folding the flying boom downward, the overall space size of the machine is reduced, which is suitable for short-term transfer of sites, convenient for staff to operate, and saves time for switching back and forth. When the main boom needs to be lifted, the flying boom is folded sideways and the position of the flying boom is fixed by the positioning mechanism to prevent the flying boom from affecting the operation of the main boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the folding structure of the fly arm of the present invention;

[0015] Figure 3 This is a schematic diagram of the fly arm side folding structure of the present invention;

[0016] Figure 4 A folded top view of the fly arm of the present invention;

[0017] Figure 5 It is a schematic diagram of the connecting member structure of the present invention;

[0018] 1. Main arm; 2. Connecting frame; 3. Connecting part; 301. Connecting part body; 302. Connecting plate; 303. Support plate; 4. Flying arm; 401. First connecting axis; 402. Second connecting axis; 403. First connecting rod; 404. Third connecting axis; 405. Limiting plate; 406. Fourth connecting axis; 407. Second connecting rod; 408. Clamping plate; 409. Mounting frame; 410. Inserting frame; 411. Adjusting wheel; 412. Fifth connecting axis; 413. Up and down cylinder; 414. Flying arm body; 415. Handle; 5. Positioning mechanism; 501. Positioning plate; 502. Mounting plate; 503. Guide rail; 504. Rotating base. DETAILED DESCRIPTION

[0019] The present invention can be explained in detail by the following examples, the purpose of which is to disclose the present invention and to protect all technical improvements within the scope of the present invention.

[0020] Combined with attachment Figures 1 to 5 The described double-foldable hydraulic flying boom structure includes a main boom 1, and two connecting frames 2 are respectively installed on both sides of the telescopic end of the main boom 1, a connecting member 3 is installed in the connecting frame 2, and a flying boom 4 is installed on the connecting member 3. The flying boom 4 is conveniently folded sideways or downwards through the connecting member 3. A positioning mechanism 5 is installed on one side of the fixed end of the main boom 1, and the position of the positioning mechanism 5 corresponds to the position of the clamping end of the flying boom 4. The flying boom 4 after side folding is fixed by the positioning mechanism 5. The main boom 1 is located on the main body of the equipment, and the flying boom 4 is controlled to work by the control device on the main body of the equipment.

[0021] The position of the central axis of the connecting member 3 coincides with the position of the central axis of the main arm 1 .

[0022] The connecting member 3 includes a connecting member body 301, a connecting plate 302 and a support plate 303. The two sides of the connecting member body 301 are fixedly connected with connecting plates 302 respectively. One end of the connecting plate 302 is connected to the connecting frame 2 through a pin shaft. The connecting plate 302 and the connecting frame 2 are connected through a pin shaft. The support plate 303 is fixedly connected between the connecting plates 302 on the upper and lower sides.

[0023] The positioning mechanism 5 includes a positioning plate 501, a mounting plate 502, a guide rail 503 and a rotating base 504. The positioning plate 501 is located on one side of the main arm 1 and is fixedly connected. The rotating base 504 and the mounting plate 502 are installed on the positioning plate 501, and the rotating base 504 is located on the lower side of the mounting plate 502. The guide rail 503 is installed on the mounting plate 502. The positions of the guide rail 503 and the rotating base 504 correspond to the position of the clamping end of the flying arm 4.

[0024] The position of the central axis of the flying arm 4 coincides with the position of the central axis of the connecting member 3 .

[0025] The flying arm 4 includes a first connecting shaft 401, a second connecting shaft 402, a first connecting rod 403, a third connecting shaft 404, a limiting plate 405, a fourth connecting shaft 406, a second connecting rod 407, a clamping plate 408, a mounting frame 409, an insertion frame 410, an adjusting wheel 411, a fifth connecting shaft 412, a lifting cylinder 413, a flying arm body 414 and a handle 415. The two sides of one end of the flying arm body 414 are respectively connected to the limiting plate 405 through the fourth connecting shaft 406, the middle part of the limiting plate 405 is connected to the second connecting rod 407 through the third connecting shaft 404, the upper half of the limiting plate 405 is connected to the connecting member body 301 through the second connecting shaft 402, the first connecting shaft 401 is located on the connecting member body 301 and is rotatably connected, the two ends of the first connecting shaft 401 respectively pass through the connecting member body 301 and are connected to one end of the first connecting rod 403, and the fifth connecting shaft 412 The other end of a connecting rod 403 is connected to one end of the second connecting rod 407 through a fifth connecting shaft 412. One end of the ups and downs oil cylinder 413 is located on the first connecting rod 403 and is rotatably connected. The other end of the ups and downs oil cylinder 413 is hinged to the flying arm body 414. An insertion frame 410 is fixedly connected to one side of the flying arm body 414, and the position of the insertion frame 410 corresponds to the position of the rotating base 504 and is contacted and connected. A mounting frame 409 is fixedly connected to the flying arm body 414, and an adjustment wheel 411 is rotatably connected in the mounting frame 409. The position of the adjustment wheel 411 corresponds to the position of the guide rail 503 and is contacted and connected. A handle 415 is installed on the end of the flying arm body 414 connected to the ups and downs oil cylinder 413. The two ends of the fifth connecting shaft 412 and the third connecting shaft 404 are respectively clamped with a clamping plate 408, and the clamping plate 408 is located on the second connecting rod 407 and fixedly connected.

[0026] The double-foldable hydraulic flying boom structure is used for short-term site transfer. When the worker starts the up-and-down oil cylinder 413 on the flying boom 4 through the control device on the main body of the equipment, the flying boom 4 is folded down by the contraction of the up-and-down oil cylinder 413, thereby reducing the occupied space and facilitating the site transfer. When the main boom 1 needs to be lifted, the main boom 1 is in the contracted state, and the worker pulls out the pin in the connecting frame 2 and the connecting plate 302 on one side. The worker pulls the flying boom through the handle 415 on the flying boom 4 to fold it sideways, so that one side of the flying boom 4 is connected to one side of the main boom 1. When the flying boom 4 is close to one side of the main boom 1, the flying boom 4 is folded sideways. The adjusting wheel 411 will move to the guide rail 503 and roll on the guide rail 503, and the flying arm 4 equipped with the adjusting wheel 411 will be auxiliary supported by the guide rail 503, so that the insertion frame 410 on the flying arm 4 is inserted into the rotating base 504, and the staff connects the insertion frame 410 and the rotating base 504 through the insertion rod, so that the flying arm 4 is completely fixed on the fixed end of the main arm 1, and the staff pulls out the pin shaft in the connecting frame 2 and the connecting plate 302 on the other side, so that the flying arm 4 is completely separated from the main arm 1, avoiding the flying arm 4 from interfering with the work of the main arm 1. After the main arm finishes working, it retracts to the initial position, and the staff installs the flying arm 4 on the main arm 1.

[0027] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred embodiments, there are many methods and approaches to implement the technical solution. The above is only a preferred embodiment of the present invention. However, those skilled in the art should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these are within the scope of protection of the present invention.

Claims

1. A double-foldable hydraulic fly boom structure, comprising a main boom (1), and two connecting frames (2) are respectively installed on both sides of the telescopic end of the main boom (1), characterized in that: A connecting member (3) is installed in the connecting frame (2), and a flying arm (4) is installed on the connecting member (3); a positioning mechanism (5) is installed on one side of the fixed end of the main arm (1), and the position of the positioning mechanism (5) corresponds to the position of the clamping end of the flying arm (4); The flying arm (4) includes a first connecting shaft (401), a second connecting shaft (402), a first connecting rod (403), a third connecting shaft (404), a limiting plate (405), a fourth connecting shaft (406), a second connecting rod (407), a clamping plate (408), a mounting frame (409), an insertion frame (410), an adjusting wheel (411), a fifth connecting shaft (412), a rising and falling oil cylinder (413), a flying arm body (414) and a handle (415), wherein both sides of one end of the flying arm body (414) are respectively connected by The fourth connecting shaft (406) is connected to the limit plate (405), the middle part of the limit plate (405) is connected to the second connecting rod (407) through the third connecting shaft (404), the upper half of the limit plate (405) is connected to the connector body (301) through the second connecting shaft (402), the first connecting shaft (401) is located on the connector body (301) and is rotatably connected, and the two ends of the first connecting shaft (401) pass through the connector body (301) and one end of the first connecting rod (403) respectively. The first connecting rod (403) is connected to the second connecting rod (407) through the fifth connecting shaft (412), and the other end of the first connecting rod (403) is connected to one end of the second connecting rod (407) through the fifth connecting shaft (412). One end of the ups and downs oil cylinder (413) is located on the first connecting rod (403) and is rotatably connected. The other end of the ups and downs oil cylinder (413) is hinged to the flying arm body (414). One side of the flying arm body (414) is fixedly connected to an insertion frame (410), and the position of the insertion frame (410) corresponds to the position of the rotating base (504) and is in contact with the rotating base (504). The flying arm body (414) is fixedly connected to the first connecting rod (403) and is in contact with the rotating base (504). 14) is fixedly connected to a mounting frame (409), and an adjusting wheel (411) is rotatably connected in the mounting frame (409), the position of the adjusting wheel (411) corresponds to the position of the guide rail (503) and is in contact with the guide rail (503), a handle (415) is installed on one end of the flying arm body (414) connected to the ups and downs oil cylinder (413), and a clamping plate (408) is respectively clamped at both ends of the fifth connecting shaft (412) and the third connecting shaft (404), and the clamping plate (408) is located on the second connecting rod (407) and is fixedly connected.

2. The double-foldable hydraulic fly boom structure according to claim 1, characterized in that: The position of the central axis of the connecting member (3) coincides with the position of the central axis of the main arm (1).

3. The double-foldable hydraulic fly boom structure according to claim 1, characterized in that: The connecting member (3) comprises a connecting member body (301), a connecting plate (302) and a support plate (303). The connecting plates (302) are fixedly connected to both sides of the connecting member body (301). One end of the connecting plate (302) is connected to the connecting frame (2) via a pin shaft. The support plate (303) is fixedly connected between the connecting plates (302) on the upper and lower sides.

4. The double-foldable hydraulic fly boom structure according to claim 1, characterized in that: The positioning mechanism (5) comprises a positioning plate (501), a mounting plate (502), a guide rail (503) and a rotating base (504); the positioning plate (501) is located on one side of the main arm (1) and is fixedly connected; the rotating base (504) and the mounting plate (502) are mounted on the positioning plate (501); the rotating base (504) is located on the lower side of the mounting plate (502); the mounting plate (502) is mounted on the guide rail (503); the positions of the guide rail (503) and the rotating base (504) correspond to the positions of the clamping end of the flying arm (4).

5. The double-foldable hydraulic fly boom structure according to claim 1, characterized in that: The position of the central axis of the flying arm (4) coincides with the position of the central axis of the connecting member (3).

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