Pneumatic hoist with buffer structure

Abstract

The utility model discloses a pneumatic hoist with a buffer structure, which belongs to the technical field of hoisting equipment, and comprises a driving box, a support frame is clamped on the driving box, a controller is arranged on one side of the support frame, two chains are arranged in the driving box, a same pull block is clamped below the two chains, and the buffer structure is arranged on the support frame. And the lower part of the pulling block is connected with a hook. A nut is detached, then a limiting rod is taken out, finally a handle is pulled, a rotating plate rotates outside a fixing shaft through a rotating ring, then the rotating plate drives a sleeve shell to be gradually away from an opening of a hook, the upper portion of a machine can be hung in the hook, at the moment, the handle is loosened, a coil spring drives the rotating ring to rotate, and the rotating ring drives the sleeve shell to rotate. When the sleeve shell is clamped outside the hook, the limiting rod is inserted into the sleeve shell at the moment, then the nut is rotated to the outer portion of the end, provided with the threads, of the limiting rod, and therefore the top end of a machine is large in size and thick and strong in hanging.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting equipment, and particularly relates to a pneumatic hoist provided with a buffer structure. Background Art

[0002] Pneumatic hoists are widely used in industries such as petroleum, chemical industry, coal mines, textiles, warehousing, household appliance production lines, automobile manufacturing production lines, and ship repair. In addition to paying attention to the beauty of the appearance, pneumatic hoists are smaller in volume, lighter in weight, and easier to handle than electric hoists. Common pneumatic hoists do not effectively buffer items, cannot effectively brake the connecting shaft, and do not effectively fix items.

[0003] Some utility model patents in the technical field of lifting equipment are disclosed in the prior art. Among them, the utility model patent with the application number CN218261715 discloses a pneumatic hoist with a buffer function. Its basic description is as follows: The utility model discloses a pneumatic hoist with a buffer function, including a housing. One side inside the housing is provided with a pneumatic motor, and one side at the bottom end of the housing is provided with a controller. The output end of the pneumatic motor is fixedly connected with a connecting shaft, and a sprocket is arranged outside the connecting shaft. This pneumatic hoist with a buffer function is provided with a limit sleeve, a connecting plate, and an inductor. When the second hook drives an item to rise to a certain level, the item will collide with the bottom end of the connecting plate. When the item collides with the bottom end of the connecting plate, the connecting plate will squeeze the buffer spring through the limit sleeve rod, and the buffer spring will buffer the item through its own elasticity to prevent the item from colliding with the bottom end of the housing and causing damage to the item and the housing. The limit sleeve can limit the buffer spring to prevent the buffer spring from shaking left and right, solving the problem that items are not effectively buffered and easily affecting the service life of the hoist.

[0004] In the actual implementation process, a limit rod for internal rotation is installed inside the hook in the above document, and the function of this rod is to cover the opening part of the hook. However, if the mounted machine is large and thick, it may completely occupy the internal space of the hook. In this case, the limit rod may not be able to return to its initial position.

[0005] Based on this, the utility model designs a pneumatic hoist provided with a buffer structure to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to propose a pneumatic hoist provided with a buffer structure to solve the problem that a limit rod for internal rotation is installed inside the hook, and the function of this rod is to cover the opening part of the hook. However, if the mounted machine is large and thick, it may completely occupy the internal space of the hook. In this case, the limit rod may not be able to return to its initial position.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A pneumatic hoist with a buffer structure, comprising a drive box, a support frame is clamped on the drive box, a controller is arranged on one side of the support frame, two chains are arranged in the drive box, and the same pulling block is clamped under the two chains. A hook is connected under the pulling block, and a shielding component for closing the opening of the hook is arranged in the hook. A fixing component for fixing the hook is connected under the pulling block, and two buffer components for protecting the drive box are connected under the drive box.

[0009] As a further description of the above technical solution:

[0010] The shielding component includes two fixing plates, the fixing plates are connected to the outside of the hook, the same fixing shaft is connected inside the two fixing plates, a rotating ring is rotatably connected to the outside of the fixing shaft, two coil springs are sleeved on the fixing shaft, a rotating plate is connected to the outside of the rotating ring, a sleeve is connected inside the rotating plate, the sleeve is clamped on the outside of the hook, a limiting rod is inserted through and clamped in the sleeve, and a handle is connected to the outside of the rotating plate.

[0011] As a further description of the above technical solution:

[0012] One end of the coil spring is connected inside the rotating ring, and the other end of the coil spring is connected inside the fixing plate.

[0013] As a further description of the above technical solution:

[0014] The limiting rod is provided with threads on the outside, and a nut is threadedly connected to the outside of the threads. A round hole is opened in the hook, and the limiting rod passes through the round hole.

[0015] As a further description of the above technical solution:

[0016] The fixing component includes a frame body and a limiting hole. The limiting hole is opened in the rotating plate. The frame body is connected under the pulling block. A sliding rod is slidably connected inside the frame body. One end of the sliding rod is connected with a round plate. A return spring is sleeved on the sliding rod. One end of the sliding rod close to the inside of the frame body is connected with a pressing block.

[0017] As a further description of the above technical solution:

[0018] One end of the return spring is connected inside the round plate, and the other end of the return spring is connected to the outside of the frame body.

[0019] As a further description of the above technical solution:

[0020] One side of the pressing block is arranged in an arc shape.

[0021] As a further description of the above technical solution:

[0022] The buffer member includes two telescopic rods connected under the drive box. A buffer plate is connected under the telescopic rods. A return spring is sleeved outside the telescopic rods. One end of the return spring is connected under the drive box, and the other end of the return spring is connected to the buffer plate. The buffer plate is shaped like an arc.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0024] 1. In the present utility model, by removing the nut, then taking out the limiting rod, and finally pulling the handle, the rotating plate is rotated outside the fixed shaft through the rotating ring. Then the rotating plate drives the sleeve to gradually move away from the opening of the hook. Subsequently, the upper part of the machine can be hung into the hook. At this time, release the handle, and the spiral spring drives the rotating ring to rotate. The rotating ring drives the sleeve to rotate. When the sleeve is clamped outside the hook, insert the limiting rod into the sleeve at this time, and then rotate the nut to the outside of the threaded end of the limiting rod, thus realizing the hanging of the relatively large and thick top of the machine.

[0025] 2. In the present utility model, when hanging the top of the machine in the hook, it may take a long time. At this time, continue to pull the handle. At this time, the rotating plate exerts a thrust on the extrusion block. Then the thrust drives the limiting plate to move through the sliding rod. Subsequently, the limiting hole in the rotating plate corresponds to the position of the extrusion block. The return spring exerts an elastic force on the round plate, so that the extrusion block is clamped in the limiting hole, thus realizing that when a long fixing process is required, the rotating plate can be fixed outside the hook to avoid interfering with subsequent hanging. Description of the Drawings

[0026] Figure 1 It is a three-dimensional structural schematic diagram of a pneumatic hoist with a buffer structure proposed by the present utility model;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of a pulling block of a pneumatic hoist with a buffer structure proposed by the present utility model;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of an occlusion member of a pneumatic hoist with a buffer structure proposed by the present utility model;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of a fixing member of a pneumatic hoist with a buffer structure proposed by the present utility model;

[0030] Figure 5 It is a three-dimensional structural schematic diagram of a buffer member of a pneumatic hoist with a buffer structure proposed by the present utility model;

[0031] Legend Explanation:

[0032] 1. Driving box; 2. Support frame; 3. Controller; 4. Chain; 5. Pulling block; 6. Hook; 7. Shielding component; 71. Fixed plate; 72. Fixed shaft; 73. Swivel ring; 74. Torsion spring; 75. Rotating plate; 76. Sheath; 77. Limiting rod; 78. Nut; 79. Handle; 8. Fixing component; 81. Frame body; 82. Slide bar; 83. Round plate; 84. Pull-back spring; 85. Extrusion block; 86. Limiting hole; 9. Buffer component; 91. Telescopic rod; 92. Return spring; 93. Buffer plate. Specific implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Please refer to Figures 1 - 5 ,

[0035] First embodiment:

[0036] The present invention provides a technical solution: a pneumatic hoist provided with a buffer structure, including a driving box 1, a support frame 2 is clamped on the driving box 1, a controller 3 is arranged on one side of the support frame 2, two chains 4 are arranged in the driving box 1, the same pulling block 5 is clamped under the two chains 4, a hook 6 is connected under the pulling block 5, a shielding component 7 for closing the opening of the hook 6 is arranged in the hook 6, a fixing component 8 for fixing the hook 6 is connected under the pulling block 5, and two buffer components 9 for protecting the driving box 1 are connected under the driving box 1.

[0037] Specifically, as Figures 2 - 4As shown in the figure, the shielding component 7 includes two fixing plates 71. The fixing plates 71 are connected outside the hook 6. The same fixing shaft 72 is connected inside the two fixing plates 71. The fixing shaft 72 is rotatably connected to a rotating ring 73 outward. By setting the fixing shaft 72 and the rotating ring 73, the fixing shaft 72 limits the rotating ring 73 to prevent the rotating ring 73 from shaking during rotation; two torsion springs 74 are sleeved outside the fixing shaft 72. A rotating plate 75 is connected outside the rotating ring 73. A sleeve 76 is connected inside the rotating plate 75. The sleeve 76 is clamped outside the hook 6. A limiting rod 77 is penetrated and clamped inside the sleeve 76. A handle 79 is connected outside the rotating plate 75. One end of the torsion spring 74 is connected inside the rotating ring 73, and the other end of the torsion spring 74 is connected inside the fixing plate 71. The limiting rod 77 is provided with threads on the outside, and a nut 78 is threadedly connected to the outside of the threads. A circular hole is opened inside the hook 6, and the limiting rod 77 passes through the circular hole. By setting the hook 6 and the limiting rod 77, the limiting rod 77 passes through the hook 6 and can form a fixed structure with the hook 6; the fixing component 8 includes a frame body 81 and a limiting hole 86. A limiting hole 86 is opened inside the rotating plate 75. The frame body 81 is connected under the pulling block 5. A sliding rod 82 is slidably connected inside the frame body 81. One end of the sliding rod 82 is connected to a circular plate 83. A return spring 84 is sleeved outside the sliding rod 82. By setting the return spring 84, when the limiting hole 86 corresponds to the position of the extrusion block 85, at this time, the return spring 84 applies an elastic force to the circular plate 83, so that the extrusion block 85 is quickly reset and clamped inside the limiting hole 86; one end of the sliding rod 82 close to the inside of the frame body 81 is connected to an extrusion block 85. One end of the return spring 84 is connected inside the circular plate 83, and the other end of the return spring 84 is connected outside the frame body 81. One side of the extrusion block 85 is set to be arc-shaped. By setting the arc-shaped extrusion block 85, when the arc-shaped surface is extruded, the entire extrusion block 85 can be driven to move.

[0038] During operation, by removing the nut 78, then taking out the limiting rod 77, and finally pulling the handle 79, the rotating plate 75 is rotated outside the fixing shaft 72 through the rotating ring 73. Then the rotating plate 75 drives the sleeve 76 to gradually move away from the opening of the hook 6. Then the upper part of the machine can be hung inside the hook 6. At this time, release the handle 79, and the torsion spring 74 drives the rotating ring 73 to rotate. The rotating ring 73 drives the sleeve 76 to rotate. When the sleeve 76 is clamped outside the hook 6, at this time, insert the limiting rod 77 into the sleeve 76, and then rotate the nut 78 to the outside of the threaded end of the limiting rod 77, thus realizing the hanging of the relatively large and thick top of the machine.

[0039] Second Embodiment:

[0040] Specifically, as Figure 5As shown in the figure, the buffer component 9 includes two telescopic rods 91. The telescopic rods 91 are connected under the driving box 1. A buffer plate 93 is connected under the telescopic rods 91. A return spring 92 is sleeved outside the telescopic rods 91. By installing the return spring 92, when the device rises, it will first come into contact with the buffer plate 93 and touch it. As the device continues to rise, the return spring 92 begins to exert an elastic force on the buffer plate 93. This elastic force acts on the buffer plate 93, and then exerts a pressure on the device, so that the upward force of the device is buffered. One end of the return spring 92 is connected under the driving box 1, and the other end of the return spring 92 is connected to the buffer plate 93. The shape of the buffer plate 93 is set as an arc. By setting the arc-shaped buffer plate 93, the contact area is increased, avoiding the problem that devices with strange shapes cannot be buffered.

[0041] When hanging the top of the machine in the hook 6, it may take a long time. At this time, the handle 79 can be pulled continuously. At this time, the rotating plate 75 exerts a thrust on the extrusion block 85. Subsequently, the thrust drives the limiting plate to move through the sliding rod 82. Then, the limiting hole 86 in the rotating plate 75 corresponds to the position of the extrusion block 85. The return spring 84 exerts an elastic force on the circular plate 83, so that the extrusion block 85 is clamped in the limiting hole 86, thus realizing that when a long fixing process is required, the rotating plate 75 can be fixed outside the hook 6 to avoid interfering with subsequent hanging.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pneumatic hoist with a buffer structure, comprising a drive box (1), characterized in that: A support frame (2) is mounted on the drive box (1), a controller (3) is mounted on one side of the support frame (2), two chains (4) are mounted inside the drive box (1), a same pulling block (5) is mounted below the two chains (4), a hook (6) is connected below the pulling block (5), a shielding component (7) for closing an opening of the hook (6) is mounted inside the hook (6), a fixing component (8) for fixing the hook (6) is connected below the pulling block (5), and two buffer components (9) for protecting the drive box (1) are connected below the drive box (1).

2. A pneumatic hoist with a buffer structure according to claim 1, characterized in that: The shielding component (7) comprises two fixing plates (71), the fixing plates (71) being connected to the outside of the hook (6), the two fixing plates (71) being connected to the same fixing shaft (72), the fixing shaft (72) being connected to a rotating ring (73) for rotating outward, the outer sleeve of the fixing shaft (72) being provided with two coil springs (74), the outer sleeve of the rotating ring (73) being connected to a rotating plate (75), the inner sleeve of the rotating plate (75) being connected to a sleeve shell (76), the sleeve shell (76) being clamped on the outside of the hook (6), a limiting rod (77) being clamped through the sleeve shell (76), and the outer sleeve of the rotating plate (75) being connected to a handle (79).

3. A pneumatic hoist with a buffer structure according to claim 2, characterized in that: One end of the coil spring (74) is connected to the inside of the rotating ring (73), and the other end of the coil spring (74) is connected to the inside of the fixing plate (71).

4. A pneumatic hoist with a buffer structure according to claim 2, characterized in that: The limiting rod (77) is provided with a thread on the outside, and the thread is externally threaded with a nut (78); a circular hole is provided in the hook (6), and the limiting rod (77) passes through the circular hole.

5. The pneumatic hoist with a buffer structure according to claim 2, characterized in that: The fixing component (8) comprises a frame (81) and a limiting hole (86). The limiting hole (86) is provided in the rotating plate (75). The frame (81) is connected under the pulling block (5). A sliding rod (82) is slidably connected in the frame (81). One end of the sliding rod (82) is connected to a circular plate (83). A return spring (84) is provided on the outer sleeve of the sliding rod (82). One end of the sliding rod (82) close to the inside of the frame (81) is connected to an extrusion block (85).

6. A pneumatic hoist with a buffer structure according to claim 5, characterized in that: One end of the return spring (84) is connected to the inside of the circular plate (83), and the other end of the return spring (84) is connected to the outside of the frame (81).

7. The pneumatic hoist with a buffer structure according to claim 5, characterized in that: One side of the extrusion block (85) is arranged in an arc shape.

8. The pneumatic hoist with a buffer structure according to claim 1, characterized in that: The buffer component (9) comprises two telescopic rods (91), the telescopic rods (91) being connected under the drive box (1), a buffer plate (93) being connected under the telescopic rods (91), a return spring (92) being provided on an outer sleeve of the telescopic rods (91), one end of the return spring (92) being connected under the drive box (1), the other end of the return spring (92) being connected to the buffer plate (93), and the shape of the buffer plate (93) being set to be an arc.

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