High-safety bridge crane

Abstract

The utility model relates to the technical field of bridge cranes, and provides a high-safety bridge crane which comprises a main beam, the top of the main beam is connected with two moving trolleys used for moving in a sliding mode, and the bottom ends of the two moving trolleys are connected with a connecting shaft in a sliding mode through steel wires. The outer side of the connecting shaft is rotationally connected with a center ring used for rotating, and two clamping plates used for unfolding are fixedly installed on the outer side of the center ring. According to the high-safety bridge crane, the first side plate and the second side plate can be used for being attached to the two sides of the bottom of a cargo so as to hoist the cargo, and after the cargo is hoisted to a certain height, the protection assembly can rotate at the bottom of the second side plate, so that the cargo can be protected; and the first side plate and the second side plate are connected through the inner structure of the protection assembly, so that the protection effect on the bottom position of the goods can be improved when the goods play a role, and then the use safety of the whole bridge crane is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cranes, and in particular to a high-safety 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 looks like a bridge. The bridge of a 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. It is the most widely used and most numerous type of lifting machinery.

[0003] A Chinese patent discloses a bridge crane hook with high safety, with the publication number CN216272691U. The article states that "it includes a hook body, wherein a pair of sleeves made of metal material are fixedly connected to the corresponding positions of the front and rear side plates of the hook body, and a U-shaped rod made of metal material is inserted into the sleeve to prevent the steel rope from being unhooked; a limit block is fixedly connected to the end of a cross bar of the U-shaped rod, and a cylinder is rotatably sleeved on the cross bar of the U-shaped rod on one side of the limit block, and a wedge block is fixedly connected to the cylinder, and a limit ring is fixedly connected to the cross bar of the U-shaped rod on the right side of the cylinder; a through groove for the wedge block to pass through is opened in the horizontal direction on the top of the outer wall of the sleeve located on the front side plate of the hook body"; the hook of the crane protects the cargo when it is lifted by the rope through the action of the U-shaped rod to prevent the rope from being separated from the hook. Since the cargo has a certain gravity and the top of the heavy object is subjected to force only when it is lifted by the rope, the safety of cargo lifting is reduced. Utility Model Content

[0004] The purpose of the utility model is to provide a high-safety bridge crane, which solves the problem in the related art that during use, the cargo has a certain gravity and the top of the heavy object is subjected to force only when lifting by ropes, thereby reducing the safety of cargo lifting.

[0005] The technical solution of the utility model is as follows:

[0006] A high-safety bridge crane comprises a main beam, the top of which is slidably connected to two moving trolleys for movement, the bottom ends of the two moving trolleys are slidably connected to a connecting shaft via a steel wire, the outer side of the connecting shaft is rotatably connected to a center ring for rotation, the outer side of the center ring is fixedly mounted with two clamps for unfolding, an unfolding assembly for unfolding the clamps is arranged between the two clamps, the bottom ends of the clamps are rotatably connected to an upper shaft for steering, the outer sides of the clamps are provided with a steering assembly for driving the upper shaft, one of the upper shafts is fixedly mounted with a first side plate for protection at both ends, the other of the upper shafts is fixedly mounted with a second side plate for protection at both ends, and the bottom ends of the second side plates are provided with a protective assembly for bottom protection.

[0007] Preferably, the protective assembly includes a lower shaft rotatably connected to the outer side of the bottom end of the second side plate, a bottom plate is fixedly installed on the outer side of the lower shaft, a connecting frame is slidably connected to the inner side wall of the bottom plate, and a plurality of connecting holes are provided at the bottom ends of the first side plate and the second side plate.

[0008] Preferably, the protection assembly further comprises two first electric hydraulic rods fixedly mounted on the outer side of the base plate, and the telescopic ends of the two first electric hydraulic rods are fixedly connected to the top inner wall of the connecting frame.

[0009] Preferably, the protective assembly also includes a lower rod fixedly installed at both ends of the second side plate, a first electric telescopic rod fixedly installed at the bottom end of the lower rod, a lower rack fixedly installed at the telescopic end of the first electric telescopic rod, lower gears fixedly installed at both ends of the lower shaft, and the lower gears are meshed with the lower rack.

[0010] Preferably, the unfolding assembly comprises a plurality of movable hinges fixedly mounted between the clamping plates, and a second electric hydraulic rod is fixedly mounted on the movable ends of the plurality of movable hinges.

[0011] Preferably, the steering assembly comprises an upper rod fixedly mounted on the outer side of the clamping plate, second electric telescopic rods are fixedly mounted on both ends of the upper rod, and an upper rack is fixedly mounted on the telescopic end of the second electric telescopic rod.

[0012] Preferably, the steering assembly further comprises upper gears fixedly mounted at both ends of the upper shaft, and the upper gears are meshed with the upper rack.

[0013] Preferably, two connecting rods are fixedly installed between the moving carts.

[0014] Beneficial effects of the utility model:

[0015] The first side panel and the second side panel can be used to fit together with the two sides of the bottom of the cargo to lift the cargo. After the cargo is lifted to a certain height, the protection component can be rotated at the bottom of the second side panel, and the internal structure of the protection component can connect the first side panel and the second side panel, thereby increasing the protection effect on the bottom position of the cargo when the cargo is lifted, thereby improving the safety of the overall bridge crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the plywood of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the second side plate of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the first side plate of the utility model;

[0021] In the figure: 1. main beam; 2. moving trolley; 21. connecting rod; 3. connecting shaft; 31. center ring; 4. clamping plate; 41. upper shaft; 5. unfolding assembly; 51. movable hinge; 52. second electric hydraulic rod; 6. steering assembly; 61. upper rod; 62. second electric telescopic rod; 63. upper rack; 64. upper gear; 7. first side plate; 8. second side plate; 9. protection assembly; 91. lower shaft; 92. bottom plate; 93. connecting frame; 94. connecting hole; 95. first electric hydraulic rod; 96. lower rod; 97. first electric telescopic rod; 98. lower rack; 99. lower gear. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 and Figure 2The present embodiment proposes a high-safety bridge crane, including a main beam 1, the top of the main beam 1 is slidably connected to two moving trolleys 2 for movement, two connecting rods 21 are fixedly installed between the moving trolleys 2, the bottom ends of the two moving trolleys 2 are slidably connected with a connecting shaft 3 through a steel wire, the outer side of the connecting shaft 3 is rotatably connected to a center ring 31 for rotation, the outer side of the center ring 31 is fixedly installed with two clamping plates 4 for unfolding, an unfolding component 5 for unfolding the clamping plates 4 is arranged between the two clamping plates 4, the bottom end of the clamping plate 4 is rotatably connected to an upper shaft 41 for steering, and a steering component 6 for driving the upper shaft 41 is arranged on the outer side of the clamping plate 4, one of the upper shafts 41 is fixedly installed with a first side plate 7 for protection at both ends, the other upper shaft 41 is fixedly installed with a second side plate 8 for protection at both ends, and a protective component 9 for bottom protection is arranged at the bottom end of the second side plate 8. When the bridge crane is used, the connecting shaft 3 can be connected to the connecting shaft 3 through the moving trolley 2 The lifting and lowering and the lateral movement on the main beam 1 make the first side plate 7 and the second side plate 8 move to the positions on both sides of the cargo. At this time, the distance between the two clamping plates 4 can be controlled by the unfolding component 5, so that the first side plate 7 and the second side plate 8 are unfolded, and at the same time, the first side plate 7 and the second side plate 8 are controlled by the steering component 6, so that the first side plate 7 and the second side plate 8 are always kept in a vertical state on the ground. After the first side plate 7 and the second side plate 8 are brought close to and fit the two sides of the cargo, the two clamping plates 4 can be tightened by the unfolding component 5, so that the mobile trolley 2 can act on the connecting shaft 3 through the steel wire to lift the cargo. After the cargo is lifted to a certain height, the protective component 9 on the second side plate 8 can be used to make the protective component 9 rotate to a lateral state, connect the bottom of the first side plate 7 and the second side plate 8, thereby protecting the bottom of the cargo, thereby increasing the safety of the overall bridge crane in the process of lifting the cargo.

[0024] See also Figure 2 , Figure 3 as well as Figure 4The present embodiment provides a high-safety bridge crane, wherein the protection assembly 9 comprises a lower shaft 91 rotatably connected to the outer side of the bottom end of the second side plate 8, a bottom plate 92 is fixedly installed on the outer side of the lower shaft 91, a connecting frame 93 is slidably connected to the inner side wall of the bottom plate 92, a plurality of connecting holes 94 are provided at the bottom ends of the first side plate 7 and the second side plate 8, the protection assembly 9 also comprises two first electric hydraulic rods 95 fixedly installed on the outer side of the bottom plate 92, the telescopic ends of the two first electric hydraulic rods 95 are fixedly connected to the inner wall of the top end of the connecting frame 93, the protection assembly 9 also comprises lower rods 96 fixedly installed at both ends of the second side plate 8, a first electric telescopic rod 97 is fixedly installed at the bottom end of the lower rod 96, and a first electric telescopic rod 97 is fixedly installed at the bottom end of the first electric telescopic rod 97. A lower rack 98 is fixedly installed at the telescopic end of an electric telescopic rod 97, and lower gears 99 are fixedly installed at both ends of the lower shaft 91. The lower gear 99 meshes with the lower rack 98. When the height of the goods is the same as the length of the connecting frame 93, the lower rack 98 can be driven to slide by the first electric hydraulic rod 95, so that the lower rack 98 can act on the lower gear 99 on the lower shaft 91, so that the connecting frame 93 can follow the lower shaft 91 to rotate to a horizontal position and fit the bottom of the second side plate 8 under the action of the bottom plate 92. At this time, the connecting frame 93 is in a horizontal state, and then the first electric telescopic rod 97 on the bottom plate 92 drives the connecting frame 93 to slide on the bottom plate 92, so that the connecting frame 93 can pass through the connecting hole 94 on the second side plate 8, and then be inserted into the connecting hole 94 on the first side plate 7, so that the bottom of the first side plate 7 and the second side plate 8 are connected through the connecting frame 93, so as to increase the protection effect on the bottom of the cargo when lifting. The unfolding assembly 5 includes a plurality of movable hinges 51 fixedly installed between the clamping plates 4, and the movable ends of the plurality of movable hinges 51 are fixedly installed with a second electric hydraulic rod 52. The distance between the two clamping plates 4 can be extended and retracted between the movable hinges 51 by the second electric hydraulic rod 52, so that the two clamping plates 4 can be rotated on the outside of the connecting shaft 3 through the center ring 31 to clamp the cargo. The steering assembly 6 includes a plurality of movable hinges 51 fixedly installed between the clamping plates 4. An upper rod 61 is fixedly installed, and a second electric telescopic rod 62 is fixedly installed at both ends of the upper rod 61. An upper rack 63 is fixedly installed at the telescopic end of the second electric telescopic rod 62. The steering assembly 6 also includes an upper gear 64 fixedly installed at both ends of the upper shaft 41. The upper gear 64 is meshed with the upper rack 63. After the distance between the clamping plates 4 changes, it is necessary to drive the upper rack 63 to slide through the second electric telescopic rod 62, so that the upper rack 63 can act on the upper gear 64 of the upper shaft 41, so that the upper gear 64 can drive the first side plate 7 and the second side plate 8 to rotate respectively through the upper shaft 41, so that the first side plate 7 and the second side plate 8 can be kept in a vertical state on the ground to clamp the goods on both sides for lifting.

[0025] In the present embodiment, when in use, the distance between the two clamping plates 4 is first adjusted by the second electric hydraulic rod 52, and the upper rack 63 acts on the upper gear 64, so that the upper shaft 41 can respectively rotate the first side plate 7 and the second side plate 8 to keep them vertical to the ground, so that the first side plate 7 and the second side plate 8 can be used to fit with the bottom sides of the cargo to lift the cargo, and after the cargo is lifted to a certain height, the lower rack 98 can act on the lower gear 99, so that the lower shaft 91 can drive the bottom plate 92 and the connecting frame 93 to rotate to a horizontal state, and then the first electric hydraulic rod 95 drives the connecting frame 93 to slide, so that the connecting frame 93 can be respectively inserted into the connecting holes 94 of the first side plate 7 and the second side plate 8, and the first side plate 7 and the second side plate 8 are connected through the connecting frame 93, thereby increasing the protective effect of the bottom position of the cargo when the cargo is lifted, thereby improving the safety of the overall bridge crane.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-safety bridge crane, comprising a main beam (1), the top of the main beam (1) being slidably connected to two moving trolleys (2) for movement, characterized in that: The bottom ends of the two moving trolleys (2) are slidably connected to a connecting shaft (3) via a steel wire, the outer side of the connecting shaft (3) is rotatably connected to a center ring (31) for rotation, the outer side of the center ring (31) is fixedly mounted with two clamping plates (4) for unfolding, an unfolding assembly (5) for unfolding the clamping plates (4) is arranged between the two clamping plates (4), the bottom ends of the clamping plates (4) are rotatably connected to an upper shaft (41) for steering, the outer side of the clamping plates (4) is arranged with a steering assembly (6) for driving the upper shaft (41), one of the upper shafts (41) is fixedly mounted with a first side plate (7) for protection at both ends, the other of the upper shafts (41) is fixedly mounted with a second side plate (8) for protection at both ends, and a protective assembly (9) for bottom protection is arranged at the bottom end of the second side plate (8).

2. A high-safety bridge crane according to claim 1, characterized in that: The protection assembly (9) comprises a lower shaft (91) rotatably connected to the outer side of the bottom end of the second side plate (8), a bottom plate (92) is fixedly mounted on the outer side of the lower shaft (91), a connecting frame (93) is slidably connected to the inner side wall of the bottom plate (92), and a plurality of connecting holes (94) are provided at the bottom ends of the first side plate (7) and the second side plate (8).

3. A high-safety bridge crane according to claim 2, characterized in that: The protection assembly (9) further comprises two first electric hydraulic rods (95) fixedly mounted on the outside of the bottom plate (92), the telescopic ends of the two first electric hydraulic rods (95) being fixedly connected to the top inner wall of the connecting frame (93).

4. A high-safety bridge crane according to claim 3, characterized in that: The protection assembly (9) further comprises a lower rod (96) fixedly mounted at both ends of the second side plate (8); a first electric telescopic rod (97) is fixedly mounted at the bottom end of the lower rod (96); a lower rack (98) is fixedly mounted at the telescopic end of the first electric telescopic rod (97); lower gears (99) are fixedly mounted at both ends of the lower shaft (91); and the lower gears (99) are meshed with the lower racks (98).

5. A high-safety bridge crane according to claim 1, characterized in that: The unfolding assembly (5) comprises a plurality of movable hinges (51) fixedly mounted between the clamping plates (4), and a second electric hydraulic rod (52) is fixedly mounted on the movable ends of the plurality of movable hinges (51).

6. A high-safety bridge crane according to claim 1, characterized in that: The steering assembly (6) comprises an upper rod (61) fixedly mounted on the outside of the clamping plate (4), second electric telescopic rods (62) fixedly mounted on both ends of the upper rod (61), and an upper rack (63) fixedly mounted on the telescopic end of the second electric telescopic rod (62).

7. A high-safety bridge crane according to claim 6, characterized in that: The steering assembly (6) further comprises upper gears (64) fixedly mounted at both ends of the upper shaft (41), and the upper gears (64) are meshed with the upper rack (63).

8. A high-safety bridge crane according to claim 1, characterized in that: Two connecting rods (21) are fixedly installed between the moving carts (2).

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