Multifunctional gantry crane

Abstract

The utility model relates to a multifunctional gantry crane which comprises a rectangular frame and a supporting frame body, a plurality of hoisting mechanisms are arranged at the upper end of the rectangular frame, a plurality of guide wheels are arranged at the lower end of the rectangular frame, a steel wire rope of the hoisting mechanism located on the left side is led out towards the right side and wound on the guide wheel on the right side, and a steel wire rope of the hoisting mechanism located on the right side is wound on the supporting frame body. The steel wire rope of the hoisting mechanism on the right side is discharged towards the left side and is wound on the guide wheel on the left side; the four-corner hoisting mechanism adopts a cross rope winding design (the left hoisting mechanism outputs a rope rightwards and winds a right guide wheel, and the right hoisting mechanism outputs a rope leftwards and winds a left guide wheel), so that a symmetrical tension network is formed, unbalance loading torque can be compensated automatically, and deformation and shaking of the frame are inhibited; meanwhile, the four hoisting mechanisms work cooperatively to achieve multi-dimensional load balancing, single-point stress concentration is reduced, and the service life of equipment is prolonged; the layout of the guide wheels and the crossed steel wire ropes supports multi-direction flexible traction, a hoisted object is allowed to flexibly avoid obstacles in a complex space, and the collision risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and in particular to a multifunctional gantry crane. Background Technology

[0002] Gantry cranes, as heavy lifting equipment, are widely used in ports, construction sites, workshops, and other scenarios. Traditional gantry cranes typically employ symmetrically arranged multi-winner mechanisms to drive lifting operations, using wire ropes and pulley blocks to achieve lifting functionality. However, this type of structure has significant drawbacks under complex working conditions. When the center of gravity of the lifted object shifts or requires multi-angle adjustments, the winch mechanism on one side is prone to frame twisting and swaying due to uneven load distribution, affecting accuracy and safety. Utility Model Content

[0003] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes a multi-functional gantry crane.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A multi-functional gantry crane includes a rectangular frame and a support frame for supporting the rectangular frame. Several winch mechanisms are provided at the upper end of the rectangular frame, and several guide wheels corresponding to the winch mechanisms are provided at the lower end of the rectangular frame. The wire rope of the winch mechanism on the left extends to the right and is wound around the guide wheel on the right, while the wire rope of the winch mechanism on the right extends to the left and is wound around the guide wheel on the left.

[0006] In some embodiments, the upper end of the rectangular frame is provided with tracks that extend in the left and right directions at intervals, and a lifting trolley that can move in the left and right directions is detachably connected between the two tracks.

[0007] In some embodiments, limit frames are provided at both the left and right ends of the track.

[0008] In some embodiments, a rubber anti-collision pad is provided on the inner side of the limiting frame.

[0009] In some embodiments, protective railings are provided on both the outer and inner edges of the upper end of the rectangular frame.

[0010] In some embodiments, the support frame includes multiple uprights and multiple Y-shaped columns located at the lower end of the rectangular frame.

[0011] In some embodiments, the hoisting mechanism includes at least a drum, a power device for driving the drum to rotate, a wire rope wound on the drum, and a hook disposed at one end of the wire rope. A rope pressing device for pressing the wire rope on the drum is also provided on the rectangular frame.

[0012] In some embodiments, the rope pressing device includes spaced-apart brackets, each bracket having a sliding groove, and a horizontal shaft connecting the two sliding grooves, which can slide along the left and right direction of the sliding groove. A rope pressing wheel is provided on the horizontal shaft. A support baffle is provided on the bracket and on one side of the sliding groove. Adjusting screws are provided on the left and right sides of the support baffle. A positioning hole is provided on one side of the horizontal shaft. One end of the adjusting screw is inserted into the positioning hole, and the other end is threaded to a first adjusting nut. A second adjusting nut is also threaded to the adjusting screw. A spring is connected between the second adjusting nut and the support baffle.

[0013] In some embodiments, a third adjusting nut is threaded onto the adjusting screw, and when one end of the adjusting screw is inserted into the positioning hole, one end of the third adjusting nut abuts against one side of the horizontal axis.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The winch mechanism adopts a cross-winding rope design (the left winch mechanism outputs rope to the right and winds around the right guide wheel, and the right winch mechanism outputs rope to the left and winds around the left guide wheel), forming a symmetrical tension network, which can automatically compensate for the off-center load moment and suppress frame deformation and swaying.

[0016] 2. Simultaneously, multiple hoisting mechanisms work together to achieve multi-dimensional load balancing, reduce stress concentration at single points, and extend equipment life;

[0017] 3. The layout of guide wheels and cross steel wire ropes supports multi-directional flexible traction, allowing the hoisted object to flexibly avoid obstacles in complex spaces and reduce the risk of collision. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the gantry crane of this utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the gantry crane of this utility model;

[0020] Figure 3 This is a top view of the gantry crane of this utility model;

[0021] Figure 4 This is one of the structural schematic diagrams of the rope pressing device of this utility model;

[0022] Figure 5This is the second schematic diagram of the rope pressing device of this utility model. Detailed Implementation

[0023] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0024] like Figures 1-3 The multi-functional gantry crane shown includes a rectangular frame 1 and a support frame 2 for supporting the rectangular frame 1. Several hoisting mechanisms 3 are provided at the upper end of the rectangular frame 1, and several guide wheels 4 corresponding to the hoisting mechanisms 3 are provided at the lower end of the rectangular frame 1. The wire rope 5 of the hoisting mechanism 3 located on the left extends to the right and is wound around the guide wheel 4 on the right, while the wire rope 5 of the hoisting mechanism 3 located on the right extends to the left and is wound around the guide wheel 4 on the left.

[0025] Based on the above structure, the winch mechanism 3 adopts a cross-winding design (the left winch mechanism extends the rope to the right and winds around the right guide wheel, while the right winch mechanism extends the rope to the left and winds around the left guide wheel), forming a symmetrical tension network that can automatically compensate for the off-center load torque and suppress frame deformation and swaying.

[0026] At the same time, multiple hoisting mechanisms work together to achieve multi-dimensional load balancing, reduce stress concentration at single points, and extend equipment life.

[0027] Preferably, the hoisting mechanism 3 is provided in four sets, which are respectively located at the four corners of the rectangular frame 1.

[0028] The layout of guide wheels 4 and cross steel wire ropes 5 supports multi-directional flexible traction, allowing the hoisted object to flexibly avoid obstacles in complex spaces and reduce the risk of collision.

[0029] In this utility model, there are tracks 21 extending in the left and right directions at the front and back of the upper end of the rectangular frame 1, and a lifting trolley that can move in the left and right directions is detachably connected between the two tracks 21; thus, a movable lifting trolley can be installed according to the site requirements. Of course, the lifting trolley is also equipped with a winch mechanism for hoisting objects.

[0030] Furthermore, limit frames 31 are provided at both ends of the track 21, and rubber anti-collision pads 41 are provided on the inner side of the limit frames 31, which can improve the stability of the crane trolley when it moves and prevent the crane trolley from being overloaded.

[0031] In this utility model, guardrails 51 are provided on both the outer and inner edges of the upper end of the rectangular frame 1 to improve the safety of operators when moving on the rectangular frame 1. Of course, a ladder (not shown in the attached figure) can be installed on the support frame 2 to allow operators to climb onto the rectangular frame 1.

[0032] In this utility model, the support frame 2 includes multiple columns 52 and multiple Y-shaped columns 53 located at the lower end of the rectangular frame 1. It has strong wind resistance and anti-tilting ability and is suitable for outdoor or high dynamic working conditions.

[0033] In this utility model, the hoisting mechanism 3 includes at least a drum 61, a power device 62 for driving the drum 61 to rotate, a steel wire rope 5 wound on the drum 61, and a hook 64 provided at one end of the steel wire rope 5. A rope pressing device for pressing the steel wire rope 5 on the drum 61 is also provided on the rectangular frame 1.

[0034] See Figure 3 , Figure 4 As shown, the rope pressing device includes spaced-apart brackets 71, each bracket 71 having a sliding groove 72. A horizontal shaft 73, capable of sliding in the left-right direction along the sliding groove 72, is connected between the two sliding grooves 72. A rope pressing wheel 10 is mounted on the horizontal shaft 73. A support baffle 74 is mounted on the bracket 71 and located on one side of the sliding groove 72. Adjusting screws 75 are threaded through the support baffle 74 on the left and right sides. A positioning hole is provided on one side of the horizontal shaft 73. One end of the adjusting screw 75 is inserted into the positioning hole, and the other end is threadedly connected to a first adjusting nut 76. A second adjusting nut 77 is also threadedly connected to the adjusting screw 75. A spring 78 is connected between the second adjusting nut 77 and the support baffle 74.

[0035] According to the above structure, through the cooperation of the slide groove 72 and the horizontal shaft 73, combined with the push structure of the adjusting screw 75, the first adjusting nut 76 (rear locking limit) and the second adjusting nut 77 (front spring preload) work together to make the spring 78 form an elastic preload force, and this elastic preload force can be adjusted, thereby pressing the wire rope 5 on the drum 61 through the rope pressing wheel 10, thereby preventing the wire rope 5 from derailing due to uneven force and jumping during operation.

[0036] In addition, the application of standardized screw, nut and spring assemblies reduces manufacturing costs, and the modular design facilitates partial replacement and maintenance, reducing downtime.

[0037] Furthermore, a third adjusting nut 81 is threadedly connected to the adjusting screw 75. When one end of the adjusting screw 75 is inserted into the positioning hole, one end of the third adjusting nut 81 abuts against one side of the horizontal shaft 73.

[0038] In other words, when the adjusting screw 75 is installed with the horizontal shaft 73, the third adjusting nut 81 is first screwed onto the adjusting screw 75, and then the adjusting screw 75 is inserted into the corresponding positioning hole. At this time, one end of the third adjusting nut 81 abuts against the side wall of the horizontal shaft 73, thereby pushing the horizontal shaft 73 and restricting its axial movement. Furthermore, the positions of the first adjusting nut 76, the second adjusting nut 77, and the third adjusting nut 81 on the adjusting screw 75 can be adjusted by turning them, thereby adjusting the preload of the spring 78 to meet the needs of different application scenarios.

[0039] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-functional gantry crane, characterized in that: It includes a rectangular frame (1) and a support frame (2) for supporting the rectangular frame (1). Several winch mechanisms (3) are provided at the upper end of the rectangular frame (1), and several guide wheels (4) corresponding to the winch mechanisms (3) are provided at the lower end of the rectangular frame (1). The wire rope (5) of the winch mechanism (3) on the left side extends to the right and is wound around the guide wheel (4) on the right side, while the wire rope (5) of the winch mechanism (3) on the right side extends to the left and is wound around the guide wheel (4) on the left side.

2. The multi-functional gantry crane according to claim 1, characterized in that: The upper end of the rectangular frame (1) is spaced between two tracks (21) that extend in the left and right directions. A lifting trolley that can move in the left and right directions is detachably connected between the two tracks (21).

3. A multi-functional gantry crane according to claim 2, characterized in that: Limit frames (31) are provided at both the left and right ends of the track (21).

4. A multi-functional gantry crane according to claim 3, characterized in that: A rubber anti-collision pad (41) is provided on the inner side of the limiting frame (31).

5. A multi-functional gantry crane according to claim 1, characterized in that: Protective railings (51) are provided on both the outer and inner edges of the upper end of the rectangular frame (1).

6. A multi-functional gantry crane according to claim 1, characterized in that: The support frame (2) includes multiple columns (52) and multiple Y-shaped columns (53) located at the lower end of the rectangular frame (1).

7. A multi-functional gantry crane according to any one of claims 1-6, characterized in that: The hoisting mechanism (3) includes at least a drum (61), a power device (62) for driving the drum (61) to rotate, a wire rope (5) wound on the drum (61), and a hook (64) provided at one end of the wire rope (5). A rope pressing device for pressing the wire rope (5) on the drum (61) is also provided on the rectangular frame (1).

8. A multi-functional gantry crane according to claim 7, characterized in that: The rope pressing device includes spaced brackets (71), each bracket (71) has a groove (72), and a horizontal shaft (73) that can slide along the left and right direction of the groove (72) is connected between the two grooves (72). A rope pressing wheel (10) is provided on the horizontal shaft (73). A support baffle (74) is provided on the bracket (71) and on one side of the groove (72). Adjusting screws (75) are provided on the left and right sides of the support baffle (74). A positioning hole is provided on one side of the horizontal shaft (73). One end of the adjusting screw (75) is inserted into the positioning hole, and the other end is threaded to a first adjusting nut (76). A second adjusting nut (77) is also threaded to the adjusting screw (75). A spring (78) is connected between the second adjusting nut (77) and the support baffle (74).

9. A multi-functional gantry crane according to claim 8, characterized in that: A third adjusting nut (81) is also threaded onto the adjusting screw (75). When one end of the adjusting screw (75) is inserted into the positioning hole, one end of the third adjusting nut (81) abuts against one side of the horizontal shaft (73).

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