Hoisting mechanism of hook bridge crane

Abstract

The utility model discloses a hoisting mechanism of a hook bridge crane, and particularly relates to the technical field of hook bridge cranes, which comprises a rack, a rotating roller is rotatably mounted at the top of the rack through a rotating shaft, a plurality of groups of steel cables are arranged on the outer wall of the rotating roller, and a plurality of guide discs are arranged on one side, close to the rotating roller, of the side wall of the rack; guide wheels are rotationally connected to the two ends, close to the lower portions of the guide discs, of the top of the mounting frame through rotating shafts, and one end of the steel cable penetrates through the guide discs and the guide wheels and is connected to the rack. According to the utility model, the positioning mechanism is arranged, and the positioning mechanism consists of the fixed frame, the movable plate, the supporting arm, the fixed arm, the positioning arms and the like, so that after the lifting hook lifts goods, the two positioning arms can be controlled to rotate inwards to be folded at the same time, and the positioning arms are propped against the goods, so as to further support and reinforce the goods on the lifting hook; and therefore, the stability and the safety during hoisting are greatly enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of hook bridge cranes, in particular to a lifting mechanism of a hook bridge crane. Background Art

[0002] A bridge crane is a lifting device that is horizontally mounted above a workshop, warehouse, or material yard to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it is shaped like a bridge. The bridge of the bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. A hook bridge crane is a bridge crane that uses a hook as a lifting device.

[0003] At present, during the use of the lifting mechanism of the hook bridge crane, the cargo is usually lifted by the hook. However, in actual use, since the hook is connected by a hook sleeve, the lifted cargo is prone to movement and has poor stability, which greatly affects the safety of the equipment during use. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting mechanism of a hook bridge crane. By setting a positioning mechanism, and the positioning mechanism is composed of a fixed frame, a movable plate, a support arm, a fixed arm and a positioning arm, after the hook lifts the goods, the two positioning arms can be controlled to rotate inward at the same time and retract, so that the positioning arms are against the goods, so as to further support and reinforce the goods on the hook, thereby greatly enhancing the stability and safety during lifting and hoisting, so as to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting mechanism of a hook bridge crane, comprising:

[0006] A frame, a roller is rotatably mounted on the top of the frame through a rotating shaft, a plurality of groups of steel cables are arranged on the outer wall of the roller, and a plurality of guide plates are arranged on the side of the side wall of the frame close to the roller;

[0007] A mounting frame, both ends of the top of the mounting frame are rotatably connected to guide wheels near the guide plate through a rotating shaft, one end of the steel cable passes through the guide plate and the guide wheel and is connected to the frame, and the bottom end of the mounting frame is movably connected to a hook through a rotating shaft;

[0008] The positioning mechanism includes a fixing frame fixedly connected to one side of the mounting frame, a movable active plate is arranged inside the fixing frame, and a fixing seat is fixed to the bottom end of the fixing frame, a connecting rod is arranged on the side wall of the fixing seat, and both ends of the connecting rod are rotatably connected to fixing arms through bearings, positioning arms are arranged at the bottom ends of the two fixing arms, and support arms are hinged between the two fixing arms and the movable plate.

[0009] Preferably, a reduction motor is fixed to one end of the top of the frame, and an output end of the reduction motor is connected to the rotating roller.

[0010] Preferably, a threaded rod is rotatably connected to the interior of the fixing frame via a bearing, one end of the movable plate is screwed to the outer wall of the threaded rod via a thread, and the top end of the threaded rod extends outside the fixing frame and is fixed with a driving motor.

[0011] Preferably, a limiting groove is provided on the side wall of the fixing frame, and the movable plate is slidably connected in the limiting groove.

[0012] Preferably, rubber pads are fixed to the inner bottom ends of the two positioning arms.

[0013] Preferably, a connecting column is fixed to the bottom end of the fixed arm, a sliding cavity is opened at the top end of the positioning arm, the connecting column is slidably connected in the sliding cavity, and a fixing component is provided between the connecting column and the positioning arm.

[0014] Preferably, the fixing assembly comprises a plurality of limiting holes arranged in an array on the side wall of the connecting column, a threaded hole facing the limiting hole is arranged on the top side wall of the positioning arm, and a fixing knob is screwed into the threaded hole.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] By setting a positioning mechanism, which is composed of a fixed frame, a movable plate, a support arm, a fixed arm and a positioning arm, after the hook lifts the cargo, the two positioning arms can be controlled to rotate inward at the same time and close together, so that the positioning arms are against the cargo, so as to further support and reinforce the cargo on the hook, thereby greatly enhancing the stability and safety during lifting;

[0017] By setting structures such as a connecting column, a sliding cavity and a fixed knob between the fixed arm and the positioning arm, the positioning arm can be moved along the connecting column, so that the length of the positioning arm can be adjusted according to needs, so that the positioning arm can better contact the cargo, greatly ensuring the reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2This is a schematic diagram of the connection structure between the fixing frame and the positioning arm of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the fixing frame of the utility model;

[0022] Figure 4 It is a schematic diagram of the connection structure between the connecting column and the positioning arm of the utility model.

[0023] Description of reference numerals:

[0024] 1. Frame; 2. Roller; 3. Speed ​​reducer motor; 4. Guide plate; 5. Steel cable; 6. Mounting frame; 7. Guide wheel; 8. Hook; 9. Fixed frame; 10. Threaded rod; 11. Drive motor; 12. Movable plate; 13. Limiting groove; 14. Fixed seat; 15. Connecting rod; 16. Fixed arm; 17. Support arm; 18. Positioning arm; 19. Rubber pad; 20. Connecting column; 21. Sliding cavity; 22. Fixing knob; 23. Threaded hole; 24. Limiting hole. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-Figure 3 A lifting mechanism of a hook bridge crane is shown, comprising:

[0027] A frame 1, a roller 2 is rotatably mounted on the top of the frame 1 through a rotating shaft, a plurality of groups of steel cables 5 are arranged on the outer wall of the roller 2, and a plurality of guide plates 4 are arranged on the side of the side wall of the frame 1 close to the roller 2;

[0028] A reduction motor 3 is fixed to one end of the top of the frame 1 , and an output end of the reduction motor 3 is connected to the rotating roller 2 .

[0029] A mounting frame 6, both ends of the top of the mounting frame 6 are rotatably connected to guide wheels 7 near the bottom of the guide plate 4 through a rotating shaft, one end of the steel cable 5 passes through the guide plate 4 and the guide wheel 7 and is connected to the frame 1, and the bottom end of the mounting frame 6 is movably connected to a hook 8 through a rotating shaft;

[0030] By driving the reduction motor 3, the reduction motor 3 drives the roller 2 to rotate, so that the roller 2 can retract and release the steel cable 5 arranged around its outer wall. At the same time, in conjunction with the guide plate 4 and the guide wheel 7, the mounting frame 6 can drive the hook 8 to move up and down, and the two sets of hooks 8 can hang heavy objects to realize the lifting operation.

[0031] The positioning mechanism includes a fixing frame 9 fixedly connected to one side of the mounting frame 6, a movable active plate 12 is arranged in the fixing frame 9, and a fixing seat 14 is fixed to the bottom end of the fixing frame 9, a connecting rod 15 is arranged on the side wall of the fixing seat 14, and both ends of the connecting rod 15 are rotatably connected to fixing arms 16 through bearings, positioning arms 18 are arranged at the bottom ends of the two fixing arms 16, and support arms 17 are hinged between the two fixing arms 16 and the movable plate 12.

[0032] A threaded rod 10 is rotatably connected to the interior of the fixing frame 9 via a bearing, one end of the movable plate 12 is screwed to the outer wall of the threaded rod 10 via a thread, and the top end of the threaded rod 10 extends to the outside of the fixing frame 9 and is fixed with a driving motor 11.

[0033] A limiting groove 13 is provided on the side wall of the fixing frame 9 , and the movable plate 12 is slidably connected in the limiting groove 13 .

[0034] The inner bottom ends of the two positioning arms 18 are all fixed with rubber pads 19. The rubber pads 19 can play the role of anti-skid reinforcement.

[0035] After the hook 8 lifts the cargo, the threaded rod 10 can be driven to rotate by the driving motor 11, so that the threaded rod 10 drives the movable plate 12 to move in the fixed frame 9, and then the movable plate 12 slides along the limiting groove 13, thereby simultaneously driving the two support arms 17 to rotate, so that the support arm 17 drives the fixed arm 16 to rotate on the connecting rod 15, and then the fixed arm 16 drives the positioning arm 18 to rotate, so that the two positioning arms 18 can be rotated inwardly and retracted at the same time, so that the positioning arm 18 rests on the cargo, so as to further support and reinforce the cargo on the hook 8, thereby greatly enhancing the stability and safety during lifting.

[0036] The utility model provides Figure 4 The hoisting mechanism of a hook bridge crane shown in the figure has a connecting column 20 fixed to the bottom end of the fixed arm 16, a sliding cavity 21 is opened at the top end of the positioning arm 18, the connecting column 20 is slidably connected in the sliding cavity 21, and a fixing component is provided between the connecting column 20 and the positioning arm 18.

[0037] The fixing assembly includes a plurality of limiting holes 24 arranged in an array on the side wall of the connecting column 20 . The top side wall of the positioning arm 18 is provided with a threaded hole 23 facing the limiting hole 24 . A fixing knob 22 is screwed into the threaded hole 23 .

[0038] By pulling the positioning arm 18, the connecting column 20 can be made to slide in the sliding cavity 21, and the fixing knob 22 can be tightened in the threaded hole 23, and the end of the fixing knob 22 can be inserted into the corresponding limiting hole 24, so that the connecting column 20 and the positioning arm 18 can be fixed, and then the length of the positioning arm 18 can be adjusted according to needs, so that the positioning arm 18 can better abut against and contact the goods, thereby greatly ensuring the reinforcement effect.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lifting mechanism of a hook bridge crane, characterized in that: include: A frame (1), a roller (2) being rotatably mounted on the top of the frame (1) via a rotating shaft, a plurality of groups of steel cables (5) being provided on the outer wall of the roller (2), and a plurality of guide plates (4) being provided on the side of the side wall of the frame (1) close to the roller (2); A mounting frame (6), wherein both ends of the top of the mounting frame (6) are rotatably connected to guide wheels (7) near the bottom of the guide plate (4) via a rotating shaft, one end of the steel cable (5) passes through the guide plate (4) and the guide wheel (7) and is connected to the frame (1), and the bottom end of the mounting frame (6) is movably connected to a hook (8) via a rotating shaft; A positioning mechanism, the positioning mechanism comprising a fixing frame (9) fixedly connected to one side of a mounting frame (6), a movable movable plate (12) being arranged in the fixing frame (9), a fixing seat (14) being fixed at the bottom end of the fixing frame (9), a connecting rod (15) being arranged on the side wall of the fixing seat (14), and both ends of the connecting rod (15) being rotatably connected to fixing arms (16) via bearings, positioning arms (18) being arranged at the bottom ends of the two fixing arms (16), and support arms (17) being hingedly connected between the two fixing arms (16) and the movable plate (12).

2. The hoisting mechanism of a hook bridge crane according to claim 1, characterized in that: A reduction motor (3) is fixed to one end of the top of the frame (1), and an output end of the reduction motor (3) is connected to the rotating roller (2).

3. The hoisting mechanism of a hook bridge crane according to claim 1, characterized in that: The interior of the fixing frame (9) is rotatably connected to a threaded rod (10) via a bearing, one end of the movable plate (12) is screwed to the outer wall of the threaded rod (10) via a thread, and the top end of the threaded rod (10) extends to the outside of the fixing frame (9) and is fixed with a driving motor (11).

4. The hoisting mechanism of a hook bridge crane according to claim 1, characterized in that: A limiting groove (13) is provided on the side wall of the fixing frame (9), and the movable plate (12) is slidably connected in the limiting groove (13).

5. The hoisting mechanism of a hook bridge crane according to claim 1, characterized in that: Rubber pads (19) are fixed to the inner bottom ends of the two positioning arms (18).

6. The hoisting mechanism of a hook bridge crane according to claim 1, characterized in that: A connecting column (20) is fixed to the bottom end of the fixed arm (16), a sliding cavity (21) is provided at the top end of the positioning arm (18), the connecting column (20) is slidably connected in the sliding cavity (21), and a fixing component is provided between the connecting column (20) and the positioning arm (18).

7. The hoisting mechanism of a hook bridge crane according to claim 6, characterized in that: The fixing assembly comprises a plurality of limiting holes (24) arranged in an array on the side wall of the connecting column (20); a threaded hole (23) facing the limiting hole (24) is arranged on the top side wall of the positioning arm (18); a fixing knob (22) is screwed into the threaded hole (23).

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