A synchronously opening and closing central drive spreader

Abstract

The present invention relates to a synchronously opened and closed center-driven hanger; it is characterized by comprising a power device, a main frame, a main shaft movably arranged on the main frame, a hanging arm member supporting a workpiece, and a swing rod assembly movably arranged on the main frame; the power device drives the main shaft to move; one end of the swing rod assembly is connected to the main shaft, and the other end of the swing rod assembly is connected to the hanging arm member; the main shaft drives the swing rod assembly to move; the swing rod assembly pushes the hanging arm member to swing along the main frame. It solves the problems caused by the existing solution that the hanging arm cannot be opened and closed at the same time, making it difficult for the hanging arm to clamp the workpiece at the same time, the hanging arm working alone has different forces to clamp the workpiece, causing the hanging arm to loosen and the workpiece to fall, and the hanging arm will bump into the workpiece during movement, causing damage to the workpiece.

Description

Technical Field

[0001] The invention relates to a sling, in particular to a central drive sling which opens and closes synchronously. Background Art

[0002] Generally, in the production process of engineering machinery, agricultural machinery, large and medium-sized buses, some longer or heavier workpieces are produced. Since it is troublesome to lift longer and heavier workpieces, the design of the hoist often considers the need for several sets of booms to lift the workpieces at the same time. The opening and closing methods of the several sets of booms are different, which determines whether the hoisting operation is convenient and economical. The boom used in traditional lifting cannot be opened and closed at the same time, making it inconvenient to transport the workpiece. How to solve this problem becomes crucial.

[0003] The existing solution uses two separate booms to lift the two ends of the workpiece. This solution has the following problems: (1) The booms cannot be opened and closed at the same time, making it difficult for the booms to clamp the workpiece at the same time; (2) The booms work independently, and the forces used to clamp the workpiece are different, causing the booms to loosen and the workpiece to fall; (3) The booms may bump into the workpiece during movement, causing damage to the workpiece. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention discloses a center-driven hanger with synchronous opening and closing, so as to solve the problems in the prior art that the boom cannot be opened and closed at the same time, making it difficult for the boom to clamp the workpiece at the same time, the arms working independently have different forces for clamping the workpiece, causing the boom to loosen and the workpiece to fall, and the boom may bump into the workpiece during movement, causing damage to the workpiece.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A center-driven spreader that opens and closes synchronously;

[0007] It includes a power device, a main frame, a main shaft movably arranged on the main frame, a suspension arm member supporting a workpiece, and a swing arm assembly movably arranged on the main frame; the power device drives the main shaft to move; one end of the swing arm assembly is connected to the main shaft, and the other end of the swing arm assembly is connected to the suspension arm member; the main shaft drives the swing arm assembly to move; the swing arm assembly pushes the suspension arm member to swing along the main frame.

[0008] A further technical solution is: first sleeves are coaxially arranged in parallel on the main frame; the main shaft passes through the first sleeves; and the main shaft moves along the first sleeves.

[0009] A further technical solution is: the rocker assembly includes a third rocker, a first rocker and a second rocker movably arranged on the main frame; the second rocker is connected to the main shaft through the first rocker; the second rocker is connected to the boom through the third rocker.

[0010] A further technical solution is: a second sleeve is coaxially arranged in parallel on the main frame; the second pendulum passes through the second sleeve; and the second pendulum moves along the second sleeve.

[0011] A further technical solution is: a reinforcing beam and a vertical beam supporting the reinforcing beam are arranged on the main frame; and the vertical beams are arranged in parallel on the main frame.

[0012] A further technical solution is: the boom member includes an upper boom swingably connected to the main frame and a lower boom supporting the workpiece; the lower boom is rotatably arranged on the upper boom; a rotating shaft is arranged on the upper boom; the rotating shaft is embedded in the lower boom; and the lower boom rotates around the rotating shaft.

[0013] A further technical solution is: a connecting shaft is provided on the upper hanging arm; the connecting shaft is connected to the upper hanging arm through a chain; an upper connecting plate is provided on the upper hanging arm; a lower connecting plate is provided on the lower hanging arm; the connecting shaft is respectively connected to the upper connecting plate and the lower connecting plate.

[0014] A further technical solution is: a protective member is arranged on the boom member; the protective member is arranged on a side of the upper boom close to the workpiece, and the protective member is arranged on a side of the lower boom close to the workpiece.

[0015] The beneficial effects of the present invention are as follows: the present invention designs a synchronously opening and closing center-driven hanger which uses the movement of the main shaft to drive the movement of the swing arm assembly, and the swing arm assembly drives the boom member to simultaneously clamp the workpiece. The synchronous opening and closing center-driven hoist brings the following effects: (1) The movement of the main shaft drives the movement of multiple rocker assemblies, and the rocker assemblies can simultaneously control the opening and closing of multiple boom parts, so that the boom parts can clamp the workpiece at the same time; (2) The rocker assembly can effectively transmit force, and the opening and closing of the boom parts can be accurately controlled, so that the force of each boom part to clamp the workpiece is the same; (3) The rigidity of the main frame is improved by strengthening the beam and the vertical beam, the service life of the main frame is extended, and the main frame is prevented from twisting and deformation; (4) By rotating the lower boom, the synchronous opening and closing center-driven hoist can prevent the boom parts from touching the workpiece during movement, thereby preventing damage to the workpiece; (5) The workpiece is protected by the protective part to prevent the boom parts from damaging the workpiece; (6) The first shaft sleeve can limit the main shaft to prevent the main shaft from position deviation during movement; (7) The second shaft sleeve can limit the second rocker part to prevent the second rocker part from position deviation during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the structure of the present invention.

[0017] Figure 2 It is the main structural diagram of the present invention.

[0018] Figure 3 It is a left-side structural diagram of the present invention.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. main frame; 11. first bushing; 12. second bushing; 13. reinforcing beam; 14. vertical beam; 2. main shaft; 3. boom member; 31. upper boom; 32. lower boom; 33. rotating shaft; 34. connecting shaft; 35. upper connecting plate; 36. lower connecting plate; 37. protective member; 4. rocker arm assembly; 41. first pendulum; 42. second pendulum; 43. third pendulum; 5. power unit. DETAILED DESCRIPTION

[0021] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a top view of the structure of the present invention. Figure 2 It is the main structural diagram of the present invention. Figure 3 It is a left-side structural diagram of the present invention. Figure 4 for Figure 3 A magnified view of the middle A. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention discloses a center-driven hanger that opens and closes synchronously. The direction of X in the figure is the front end of the top view structural diagram of the present invention, and the direction of Y in the figure is the right end of the top view structural diagram of the present invention. The center-driven hanger that opens and closes synchronously includes a power device 5, a main frame 1, a main shaft 2 movably arranged on the main frame 1, a boom member 3 supporting a workpiece, and a swing arm assembly 4 movably arranged on the main frame 1. The power device 5 drives the main shaft 2 to move. One end of the swing arm assembly 4 is connected to the main shaft 2, and the other end of the swing arm assembly 4 is connected to the boom member 3. The main shaft 2 drives the swing arm assembly 4 to move. The swing arm assembly 4 pushes the boom member 3 to swing along the main frame 1.

[0023] The main frame 1 is coaxially and juxtaposedly provided with first sleeves 11 . The main shaft 2 passes through the first sleeves 11 . The main shaft 2 moves inside the first sleeves 11 .

[0024] The first sleeve 11 is fixedly arranged at the upper end of the main frame 1. The outer surface of the main shaft 2 fits the inner surface of the first sleeve 11. Before the synchronous opening and closing center drive hanger works, it is necessary to fill the first sleeve 11 with lubricating oil so that the main shaft 2 can move smoothly along the first sleeve 11. The first sleeve 11 can limit the main shaft 2 and prevent the main shaft 2 from position deviation when moving.

[0025] Preferably, the power device 5 is a cylinder. The power device 5 is arranged at the left end of the main frame 1. The right end of the power device 5 is the driving end of the power device 5. The right end of the power device 5 is connected to the left end of the main shaft 2. The power device 5 drives the main shaft 2 to move left and right along the first shaft sleeve 11. The power device 5 can provide stable power.

[0026] The power device 5 is a cylinder, and the selection of the cylinder model belongs to common knowledge. Those skilled in the art can select according to the working conditions of the device, for example, a cylinder of model SC100*100-S can be selected.

[0027] The swing rod assembly 4 includes a third swing member 43, a first swing member 41 and a second swing member 42 movably arranged on the main frame 1. The second swing member 42 is connected to the main shaft 2 through the first swing member 41. The second swing member 42 is connected to the suspension arm 3 through the third swing member 43.

[0028] The main frame 1 is provided with a second shaft sleeve 12 in parallel. The second swing member 42 passes through the second shaft sleeve 12. The second swing member 42 moves inside the second shaft sleeve 12.

[0029] Preferably, there are multiple rocker assemblies 4. The rocker assemblies 4 are arranged in parallel on the front and rear sides of the upper end of the main frame 1. The second rocker 42 is arranged in the front and rear direction. The second shaft sleeve 12 is fixedly arranged at the upper end of the main frame 1. The outer surface of the second rocker 42 fits the inner surface of the second shaft sleeve 12. Before the synchronous opening and closing center drive hanger works, it is necessary to fill the second shaft sleeve 12 with lubricating oil so that the second rocker 42 can move smoothly along the second shaft sleeve 12. The second shaft sleeve 12 can limit the second rocker 42 and prevent the second rocker 42 from position deviation when moving.

[0030] One end of the first pendulum 41 is movably connected to the main shaft 2. The other end of the first pendulum 41 is movably connected to one end of the second pendulum 42. The other end of the second pendulum 42 is movably connected to one end of the third pendulum 43. The other end of the third pendulum 43 is movably connected to the suspension arm 3.

[0031] When the main shaft 2 moves to the right, the main shaft 2 drives one end of the first swing member 41 to move to the right. The first swing member 41 drives the second swing member 42 to approach the main shaft 2, and the second swing member 42 pulls the third swing member 43 inward. The third swing member 43 drives the suspension arm 3 to swing along the main frame 1, so that the suspension arm 3 is opened.

[0032] When the main shaft 2 moves to the left, the main shaft 2 drives one end of the first swing member 41 to move to the left. The first swing member 41 drives the second swing member 42 away from the main shaft 2, and the second swing member 42 pushes the third swing member 43 outward. The third swing member 43 drives the suspension arm 3 to swing in the opposite direction along the main frame 1, so that the suspension arm 3 is closed.

[0033] The swing arm assembly 4 can realize effective force transmission, and can accurately control the opening and closing of the boom member 3, so that the force of each boom member 3 holding the workpiece is the same. The movement of the spindle 2 drives the movement of the swing arm assembly 4. Since there are multiple swing arm assemblies 4, the swing arm assembly 4 can control multiple boom members 3 to open and close at the same time, so that the boom members 3 can clamp the workpiece at the same time.

[0034] The main frame 1 is provided with a reinforcing beam 13 and a vertical beam 14 for supporting the reinforcing beam 13. The vertical beams 14 are arranged on the main frame 1 in parallel.

[0035] Preferably, the reinforcing beam 13 is trapezoidal. The reinforcing beam 13 is arranged at the upper end of the main frame 1. The lower end of the reinforcing beam 13 is connected to the upper end of the main frame 1. The vertical beam 14 is arranged in parallel at the upper end of the main frame 1. The upper end of the vertical beam 14 is connected to the reinforcing beam 13, and the lower end of the vertical beam 14 is connected to the main frame 1. The vertical beam 14 plays a role in supporting and reinforcing the structure of the reinforcing beam 13.

[0036] The synchronously opened and closed center-driven lifting device lifts a long and heavy workpiece. After the synchronously opened and closed center-driven lifting device works for a long time, the main frame 1 will be twisted and deformed. The rigidity of the main frame 1 is improved by strengthening the beam 13 and the vertical beam 14, and the service life of the main frame 1 is extended.

[0037] The arm member 3 includes an upper arm 31 swingably connected to the main frame 1 and a lower arm 32 supporting a workpiece. The lower arm 32 is rotatably arranged on the upper arm 31. A rotating shaft 33 is arranged on the upper arm 31. The rotating shaft 33 is embedded in the lower arm 32. The lower arm 32 rotates around the rotating shaft 33.

[0038] Preferably, there are multiple arm members 3. The arm members 3 are arranged in parallel on the front and rear sides of the main frame 1. The upper end of the upper arm 31 is swingably connected to the main frame 1. The upper end of the lower arm 32 is rotatably arranged at the lower end of the upper arm 31. A rotating shaft 33 is arranged at the lower end of the upper arm 31. The lower end of the upper arm 31 is connected to the upper end of the rotating shaft 33. The lower end of the rotating shaft 33 is embedded in the upper end of the lower arm 32. The lower arm 32 rotates around the outer surface of the rotating shaft 33.

[0039] By rotating the lower arm 32, it is possible to prevent the arm member 3 of the synchronously opened and closed central drive hanger from touching the workpiece during movement, thereby preventing damage to the workpiece.

[0040] The upper arm 31 is provided with a connecting shaft 34. The connecting shaft 34 is connected to the upper arm 31 through a chain. The upper arm 31 is provided with an upper connecting plate 35. The lower arm 32 is provided with a lower connecting plate 36. The connecting shaft 34 is connected to the upper connecting plate 35 and the lower connecting plate 36 respectively.

[0041] The upper end of the chain is connected to the upper arm 31, and the lower end of the chain is connected to the connecting shaft 34. An upper connecting plate 35 is provided at the lower end of the outer surface of the upper arm 31. A lower connecting plate 36 is provided at the upper end of the outer surface of the lower arm 32. The lower end of the connecting shaft 34 passes through the upper connecting plate 35 and the lower connecting plate 36 respectively. The connecting shaft 34 ensures a stable connection between the upper arm 31 and the lower arm 32.

[0042] A protective member 37 is provided on the arm member 3. The protective member 37 is provided on a side of the upper arm 31 close to the workpiece, and the protective member 37 is provided on a side of the lower arm 32 close to the workpiece.

[0043] The protective member 37 is screwed on the side of the upper suspension arm 31 close to the workpiece. The protective member 37 is screwed on the side of the lower suspension arm 32 close to the workpiece. The protective member 37 protects the workpiece and prevents the suspension arm member 3 from damaging the workpiece.

[0044] In this embodiment, the power device 5 described is a cylinder, but it is not limited to this and can be other power devices within the scope that can exert its function.

[0045] In addition, in this specification, the words "trapezoidal" and the like are used, but they do not necessarily mean a precise "trapezoidal" shape, and may be a "substantially trapezoidal" shape within a range in which the function can be exerted.

[0046] In addition, in this specification, although the number such as "plurality" is used, it is not limited to this, and it can be another number within the range which can show the function.

[0047] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the basic structure of the present invention.

Claims

1. A synchronously opened and closed centrally driven spreader, characterized in that: The invention comprises a power device (5), a main frame (1), a main shaft (2) movably arranged on the main frame (1), a suspension arm (3) supporting a workpiece, and a swing arm assembly (4) movably arranged on the main frame (1); the power device (5) drives the main shaft (2) to move; one end of the swing arm assembly (4) is connected to the main shaft (2), and the other end of the swing arm assembly (4) is connected to the suspension arm (3); the main shaft (2) drives the swing arm assembly (4) to move; and the swing arm assembly (4) drives the suspension arm (3) to swing along the main frame (1); The swing rod assembly (4) comprises a third swing member (43), a first swing member (41), and a second swing member (42) movably arranged on the main frame (1); the second swing member (42) is connected to the main shaft (2) via the first swing member (41); the second swing member (42) is connected to the suspension arm (3) via the third swing member (43); The suspension arm member (3) comprises an upper suspension arm (31) swingably connected to the main frame (1) and a lower suspension arm (32) supporting the workpiece; the lower suspension arm (32) is rotatably arranged on the upper suspension arm (31); a rotating shaft (33) is arranged on the upper suspension arm (31); the rotating shaft (33) is embedded in the lower suspension arm (32); the lower suspension arm (32) rotates around the rotating shaft (33); The upper suspension arm (31) is provided with a connecting shaft (34); the connecting shaft (34) is connected to the upper suspension arm (31) via a chain; an upper connecting plate (35) is provided on the upper suspension arm (31); a lower connecting plate (36) is provided on the lower suspension arm (32); the connecting shaft (34) is respectively connected to the upper connecting plate (35) and the lower connecting plate (36); There are multiple swing rod assemblies (4); the swing rod assemblies (4) are arranged in parallel on the front and rear sides of the upper end of the main frame (1); There are a plurality of suspension arm members (3); the suspension arm members (3) are arranged in parallel on the front and rear sides of the main frame (1).

2. The synchronous opening and closing center-driven hanger according to claim 1, characterized in that: The main frame (1) is coaxially and juxtaposedly provided with first shaft sleeves (11); the main shaft (2) passes through the first shaft sleeves (11); and the main shaft (2) moves along the inside of the first shaft sleeves (11).

3. The synchronous opening and closing center-driven hanger according to claim 1, characterized in that: A second shaft sleeve (12) is coaxially arranged in parallel on the main frame (1); the second swing member (42) passes through the second shaft sleeve (12); and the second swing member (42) moves inside the second shaft sleeve (12).

4. The synchronous opening and closing center-driven hanger according to claim 1, characterized in that: The main frame (1) is provided with a reinforcing beam (13) and a vertical beam (14) supporting the reinforcing beam (13); the vertical beams (14) are arranged in parallel on the main frame (1).

5. The synchronous opening and closing center-driven hanger according to claim 1, characterized in that: A protective member (37) is provided on the suspension arm member (3); the protective member (37) is provided on a side of the upper suspension arm (31) close to the workpiece, and the protective member (37) is provided on a side of the lower suspension arm (32) close to the workpiece.

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