Simple electric hoist bridge crane
By installing a fixed frame and clamping plate structure in the electric hoist bridge crane, the problems of ejection and tangled entanglement when the steel rope breaks are solved, ensuring worker safety and stable equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG YUEFENG HOISTING MASCH CO LTD
- Filing Date
- 2022-07-29
- Publication Date
- 2026-05-29
AI Technical Summary
When the steel rope of an existing electric hoist bridge crane breaks, the steel rope may be ejected far away, threatening the safety of workers, and may also cause the steel rope to become tangled and twisted inside the electric hoist, which may lead to equipment jamming or coil burnout.
A fixed frame and a fixed clamping box are installed under the crossbeam of the crane. The telescopic rod and clamping plate structure are used to buffer the ejection force when the steel rope breaks. The clamping plate is controlled by speed and pressure detectors to hold the steel rope and prevent it from getting tangled at the main shaft.
It effectively reduces the ejection range when the steel rope breaks, ensuring worker safety and preventing the steel rope from becoming tangled and tangled inside the electric hoist, thus protecting the equipment.
Smart Images
Figure CN117509441B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of crane technology, specifically to a simple electric hoist bridge crane. Background Technology
[0002] Bridge cranes are frequently used in factories, docks, warehouses, and other areas. However, in actual use, these cranes are erected on the beams of the factory building, and their height is not adjustable. This causes the steel cable used to lift heavy objects to be stretched very long. In the event of an accidental breakage, the steel cable can be ejected a great distance, threatening the safety of nearby workers.
[0003] Furthermore, if the steel cable breaks during the operation of the crane, it will cause the winding device inside the electric hoist to suddenly and rapidly wind up. At the same time, the lack of a load will cause the steel cable inside the electric hoist to suddenly become tangled, resulting in jamming inside the electric hoist. In severe cases, it may even cause the motor coil to burn out. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a simple electric hoist bridge crane, which has the advantages of preventing steel rope breakage from endangering the personal safety of surrounding workers and preventing steel rope from becoming tangled and twisted inside the electric hoist. It solves the problems of steel rope breakage endangering the personal safety of surrounding workers and steel rope becoming tangled and twisted inside the electric hoist.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: a simple electric hoist bridge crane, comprising an end beam, a crossbeam fixedly connected to the upper outer surface of the end beam, a slide rail formed on the upper outer surface of the crossbeam, a bracket slidably connected to the upper outer surface of the crossbeam, a hydraulic tank fixedly connected to the upper outer surface of the bracket, air pipes fixedly connected to the front and rear outer surfaces of the hydraulic tank, a main shaft rotatably connected inside the bracket, a steel rope slidably connected to the outer surface of the main shaft, a hook fixedly connected to the lower end of the steel rope, a fixed frame fixedly connected to the lower outer surface of the crossbeam, a crossbar provided in the middle position inside the fixed frame, a telescopic rod slidably connected to the lower end of the fixed frame, a groove formed inside the connection between the fixed frame and the telescopic rod, and a spring slidably connected to the inner surface of the groove.
[0008] Preferably, a fixing plate is fixedly connected to the inner surfaces of both sides of the fixing frame, and a rotating shaft is rotatably connected to the side of the fixing plate away from the fixing frame. A fixing clamp box is fixedly connected to the outer circular surface of the rotating shaft. A bearing is provided at the connection between the fixing plate and the rotating shaft. A rectangular groove is opened on the upper outer surface of the fixing clamp box. A connecting pipe is fixedly connected to the front outer surface of the fixing clamp box. An inner cavity is opened inside the fixing clamp box at a position corresponding to the connecting pipe. A clamping plate is slidably connected to the inner surface of the upper inner cavity of the fixing clamp box. Speed detectors are provided on the front and rear inner surfaces of the rectangular groove on the fixing clamp box. A pressure detection plate is provided inside the portion of the outer surface of the rotating shaft located inside the fixing clamp box.
[0009] Preferably, there are two end beams and two crossbeams. The two end beams are located at the front and rear ends of the crossbeams, and the two crossbeams are arranged symmetrically on the end beams. The upper outer surfaces of the two crossbeams are provided with slides.
[0010] Preferably, the bracket has a "T" shaped structure, and pulleys are provided on the lower outer surface of the bracket at positions corresponding to the slide rails. The lower part of the "T" shape of the bracket is located in the gap between the two crossbeams.
[0011] Preferably, both the fixed frame and the telescopic rod are provided with four crossbars. The number of telescopic rods is four, and they are combined into a rectangular frame structure by the four crossbars. The telescopic rod is also provided with a sliding groove inside, and the upper end of the telescopic rod is fixedly connected to a spring in the sliding groove on the fixed plate.
[0012] Preferably, the fixing clamp box has an internal hollow structure, and rectangular grooves are provided on the outer surfaces of the upper and lower ends of the fixing clamp box. The rectangular grooves on the upper end of the fixing clamp box are connected to the interior of the fixing clamp box, and the steel rope passes through the rectangular grooves to enter the interior of the fixing clamp box and slides to connect with the rotating shaft located inside the fixing clamp box.
[0013] Preferably, the front and rear outer surfaces of the fixed clamp box are provided with connecting pipes, the front and rear interiors of the fixed clamp box are provided with cavities, the two connecting pipes are respectively connected to their corresponding cavities, the inner surfaces of the cavities of the two fixed clamp boxes are slidably connected with clamping plates, and the air pipe is movably connected to the connecting pipes.
[0014] Preferably, both clamping plates extend through the fixed clamping box into its interior, with the two clamping plates facing the outer circular surface of the rotating shaft. The outer surface of each clamping plate near the outer circular surface of the rotating shaft is provided with protrusions. The speed detector and pressure detection plate on the fixed clamping box are electrically connected to the hydraulic box.
[0015] Compared with the prior art, the present invention provides a simple electric hoist bridge crane, which has the following advantages:
[0016] 1. This simple electric hoist bridge crane, by setting a fixed frame under the crossbeam, can reduce the range of ejection after the steel rope breaks, thereby ensuring the personal safety of workers operating around it.
[0017] 2. This simple electric hoist bridge crane, by setting a fixed clamp box at the fixed frame, prevents the power transmitted when the steel rope breaks from being continuously transmitted to the main shaft, thereby ensuring that the steel rope at the main shaft will not become tangled and ensuring the safety of the equipment. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;
[0020] Figure 3 This is a schematic diagram of the internal structure of the fixing clamp box of the present invention;
[0021] Figure 4 This is a schematic diagram showing the positional relationship between the fixed clamp box and the rotating shaft of the present invention.
[0022] The components are as follows: 1. End beam; 2. Crossbeam; 3. Slide rail; 4. Bracket; 5. Hydraulic tank; 6. Air pipe; 7. Fixing frame; 8. Steel rope; 9. Fixing clamp box; 10. Main shaft; 11. Hook; 71. Crossbar; 72. Telescopic rod; 73. Slide groove; 74. Spring; 91. Rotating shaft; 92. Fixing plate; 93. Bearing; 94. Rectangular groove; 95. Connecting pipe; 96. Inner cavity; 97. Clamping plate; 98. Speed detector; 99. Pressure detection plate. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Example 1, as Figure 1-3As shown, a simple electric hoist bridge crane includes an end beam 1. A crossbeam 2 is fixedly connected to the upper outer surface of the end beam 1. A slide rail 3 is provided on the upper outer surface of the crossbeam 2. A bracket 4 is slidably connected to the upper outer surface of the crossbeam 2. A hydraulic tank 5 is fixedly connected to the upper outer surface of the bracket 4. Air pipes 6 are fixedly connected to the front and rear outer surfaces of the hydraulic tank 5. A main shaft 10 is rotatably connected inside the bracket 4. A steel rope 8 is slidably connected to the outer surface of the main shaft 10. A hook 11 is fixedly connected to the lower end of the steel rope 8. A fixed frame 7 is fixedly connected to the lower outer surface of the crossbeam 2. A crossbar 71 is provided in the middle position inside the fixed frame 7. A telescopic rod 72 is slidably connected to the lower end of the fixed frame 7. A groove is provided inside the connection between the fixed frame 7 and the telescopic rod 72. 73. A spring 74 is slidably connected to the inner surface of the groove 73. When the connected steel rope 8 breaks, the steel rope 8 will suddenly relax and bounce in all directions. At this time, the steel rope 8 is located in the middle of the rectangular frame formed by the fixed frame 7 and the telescopic rod 72 below the crossbeam 2. When the steel rope 8 bounces, the crossbar 71 on the telescopic rod 72 will prevent the steel rope 8 from bouncing in all directions. When the steel rope 8 touches the crossbar 71, it will wrap around the crossbar 71. At this time, due to the tension of the steel rope 8, the telescopic rod 72 will slide in the groove 73 inside the fixed frame 7. The movement of the telescopic rod 72 will squeeze the spring 74, so that the elasticity of the steel rope 8 will be gradually buffered by the spring 74. By setting the fixed frame 7 and the telescopic rod 72, the broken steel rope 8 will not bounce far away, ensuring the personal safety of the surrounding workers.
[0025] Example 2, as Figure 1-4As shown, fixing plates 92 are fixedly connected to the inner surfaces of both sides of the fixing frame 7. A rotating shaft 91 is rotatably connected to the side of the fixing plate 92 away from the fixing frame 7. A fixing clamp box 9 is fixedly connected to the outer circular surface of the rotating shaft 91. A bearing 93 is provided at the connection between the fixing plate 92 and the rotating shaft 91. A rectangular groove 94 is opened on the outer surface of the upper end of the fixing clamp box 9. A connecting pipe 95 is fixedly connected to the outer surface of the front end of the fixing clamp box 9. An inner cavity 96 is opened inside the fixing clamp box 9 at the position corresponding to the connecting pipe 95. A clamping plate 97 is slidably connected to the inner surface of the inner cavity 96 of the fixing clamp box 9. Speed detectors 98 are provided on the inner surfaces of the front and rear ends of the rectangular groove 94 of the fixing clamp box 9. A pressure detection plate 99 is provided inside the part of the outer surface of the rotating shaft 91 located inside the fixing clamp box 9. When the steel rope 8 breaks, the main shaft 10 is still rotating. The steel rope 8 will continue to be wound up. At this time, the rotation of the main shaft 10 will pull the steel rope 8. The steel rope 8 is wound around the fixed clamp box 9 and the rotating shaft 91 inside the fixed clamp box 9. Therefore, when the steel rope 8 breaks, the speed detector 98 located at the rectangular groove 94 at the lower end of the fixed clamp box 9 will first detect the sudden rapid movement of the steel rope 8, and send a signal to the hydraulic box 5. The hydraulic box 5 starts and inflates the inner cavity 96 connected to the connecting pipe 95 through the air pipe 6. The increased air pressure in the inner cavity 96 will push the clamping plate 97 to move closer to the rotating shaft 91. Through the protrusions on the clamping plate 97, the steel rope 8 on the rotating shaft 91 is clamped, so that the steel rope 8 is clamped on the rotating shaft 91, preventing the steel rope 8 from continuing to loosen and being transmitted to the main shaft 10. This ensures that the steel rope 8 at the main shaft 10 will not suddenly become tangled, thus ensuring the safety of the internal structure of the main shaft 10 and the support 4.
[0026] Working Principle: During the use of this device, the air pipe 6 is first connected to the connecting pipe 95. When transporting goods, the fixed frame 7 moves on the crossbeam 2, and the hook 11 connects to the goods. When the connected steel rope 8 breaks, it suddenly relaxes and bounces outwards. At this time, the steel rope 8 is located in the middle of the rectangular frame formed by the fixed frame 7 and the telescopic rod 72 below the crossbeam 2. When the steel rope 8 bounces, the crossbar 71 on the telescopic rod 72 prevents it from bouncing outwards. When the steel rope 8 touches the crossbar 71, it wraps around it. The tension of the steel rope 8 causes the telescopic rod 72 to slide in the groove 73 inside the fixed frame 7. The movement of the telescopic rod 72 compresses the spring 74, gradually buffering the elasticity of the steel rope 8. By setting up the fixed frame 7 and the telescopic rod 72, the broken steel rope 8 will not bounce far away, ensuring the safety of surrounding workers. For personal safety, and when the steel rope 8 breaks, the main shaft 10 is still rotating and will continue to wind up the steel rope 8. At this time, the rotation of the main shaft 10 will pull the steel rope 8. The steel rope 8 is currently wound around the fixed clamp box 9 and the rotating shaft 91 inside the fixed clamp box 9. Therefore, when the steel rope 8 breaks, the speed detector 98 located at the rectangular groove 94 at the lower end of the fixed clamp box 9 will first detect the sudden rapid movement of the steel rope 8, thereby sending a signal to the hydraulic box 5, and the hydraulic box 5 will start. Inflation is performed through the air tube 6 into the inner cavity 96 connected to the connecting tube 95. The increased air pressure in the inner cavity 96 pushes the clamping plate 97 toward the rotating shaft 91. The protrusions on the clamping plate 97 hold the steel rope 8 on the rotating shaft 91, thus clamping the steel rope 8 on the rotating shaft 91 and preventing the steel rope 8 from continuing to loosen and be transmitted to the main shaft 10. This ensures that the steel rope 8 at the main shaft 10 will not suddenly become disordered, thereby ensuring the safety of the internal structure of the main shaft 10 and the support 4.
[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A simple electric hoist bridge crane, comprising an end beam (1), characterized in that: A crossbeam (2) is fixedly connected to the upper outer surface of the end beam (1). A slide rail (3) is provided on the upper outer surface of the crossbeam (2). A bracket (4) is slidably connected to the upper outer surface of the crossbeam (2). A hydraulic tank (5) is fixedly connected to the upper outer surface of the bracket (4). Air pipes (6) are fixedly connected to the front and rear outer surfaces of the hydraulic tank (5). A main shaft (10) is rotatably connected inside the bracket (4). A steel rope (8) is slidably connected to the outer circular surface of the main shaft (10). A hook (11) is fixedly connected to the lower end of the steel rope (8). A fixed frame (7) is fixedly connected to the lower outer surface of the crossbeam (2). A crossbar (71) is provided in the middle position inside the fixed frame (7). A telescopic rod (72) is slidably connected to the lower end of the fixed frame (7). A groove (73) is provided inside the connection between the fixed frame (7) and the telescopic rod (72). A spring (74) is slidably connected to the inner surface of the groove (73). Fixing plates (92) are fixedly connected to the inner surfaces of both sides of the fixing frame (7). A rotating shaft (91) is rotatably connected to the side of the fixing plate (92) away from the fixing frame (7). A fixing clamp box (9) is fixedly connected to the outer circular surface of the rotating shaft (91). A bearing (93) is provided at the connection between the fixing plate (92) and the rotating shaft (91). A rectangular groove (94) is opened on the upper outer surface of the fixing clamp box (9). A connecting pipe (95) is fixedly connected to the front outer surface of the fixing clamp box (9). An inner cavity (96) is opened inside the fixing clamp box (9) at the position corresponding to the connecting pipe (95). A clamp plate (97) is slidably connected to the inner surface of the inner cavity (96) of the fixing clamp box (9). A speed detector (98) is provided on the inner surfaces of the front and rear ends of the rectangular groove (94) of the fixing clamp box (9). A pressure detection plate (99) is provided inside the part of the outer surface of the rotating shaft (91) located inside the fixing clamp box (9). The front and rear outer surfaces of the fixed clamp box (9) are provided with connecting pipes (95). The front and rear interiors of the fixed clamp box (9) are provided with cavities (96). The two connecting pipes (95) are respectively connected to their corresponding cavities (96). The inner surfaces of the cavities (96) of the two fixed clamp boxes (9) are slidably connected with clamps (97). The air pipe (6) is movably connected to the connecting pipes (95). The two clamps (97) extend through the fixed clamp box (9) into the interior of the fixed clamp box (9). The two clamps (97) face each other. The outer surface of the rotating shaft (91) and the outer surface of the two clamping plates (97) near the outer surface of the rotating shaft (91) are provided with protrusions. The speed detector (98) and pressure detection plate (99) on the fixed clamping box (9) are electrically connected to the hydraulic box (5). The steel rope (8) is wound on the rotating shaft (91). When the connected steel rope (8) breaks, the steel rope (8) will suddenly relax and bounce in all directions. At this time, the steel rope (8) is located in the middle of the rectangular frame formed by the fixed frame (7) below the crossbeam (2) and the telescopic rod (72).
2. A simple electric hoist bridge crane according to claim 1, characterized in that: The number of end beams (1) and cross beams (2) are two. The two end beams (1) are located at the front and rear ends of the cross beams (2). The two cross beams (2) are arranged symmetrically on the left and right sides of the end beams (1). The upper outer surface of the two cross beams (2) is provided with slides (3).
3. A simple electric hoist bridge crane according to claim 1, characterized in that: The bracket (4) has a "T" shaped structure, and pulleys are provided on the lower outer surface of the bracket (4) at the positions corresponding to the slide (3). The lower part of the "T" shape of the bracket (4) is located in the gap between the two crossbeams (2).
4. A simple electric hoist bridge crane according to claim 1, characterized in that: The fixed frame (7) and the telescopic rod (72) are each provided with four crossbars (71). There are four telescopic rods (72), and they are combined into a rectangular frame structure by the four crossbars (71). The telescopic rod (72) is also provided with a sliding groove (73). The upper end of the telescopic rod (72) is fixedly connected to the spring (74) in the sliding groove (73) on the fixed plate (92).
5. A simple electric hoist bridge crane according to claim 2, characterized in that: The fixed clamp box (9) has an internal hollow structure. Rectangular grooves (94) are provided on the outer surfaces of the upper and lower ends of the fixed clamp box (9). The rectangular grooves (94) on the fixed clamp box (9) are connected to the interior of the fixed clamp box (9). The steel rope (8) passes through the rectangular grooves (94) and enters the interior of the fixed clamp box (9) to slide and connect with the rotating shaft (91) located inside the fixed clamp box (9).