A multifunctional gantry crane with multiple lifting points

Abstract

The present application relates to a multifunctional multi-suspension-point gantry crane, through the design of four winch mechanisms symmetrically arranged on the left and right sides and a movable trolley, flexible configuration and dynamic adjustment of the suspension points are realized, the needs of complex hoisting tasks are adapted, and the operation efficiency and precision are significantly improved; the second guide pulley is detachably connected with the rectangular frame through the first locking device, and cooperates with the second locking device of the movable trolley, so that the second guide pulley can be quickly locked on the movable trolley after being unlocked, seamless switching of the position of the second guide pulley is realized, the equipment function is expanded, and manual intervention is reduced; the second locking device completes the fixing of the second guide pulley at the same time when the first locking device is unlocked, the operation process is simplified, the risk of misoperation is reduced, and the safety and stability of the hoisting process are ensured; the linkage design of the movable trolley and the second guide pulley avoids the redundant space occupation caused by the fixed structure of the traditional gantry crane, and is especially suitable for hoisting operations in narrow or complex sites.

Description

Technical Field

[0001] This invention relates to the field of gantry crane technology, and in particular to a multi-functional, multi-lifting-point 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 a fixed lifting point design, whose lifting position and direction are limited by the structural layout, making it difficult to adapt to diverse lifting needs under complex working conditions. Especially in scenarios requiring multi-point coordinated operation or dynamic adjustment of lifting positions, existing gantry cranes often rely on multiple machines working together or frequent structural adjustments, resulting in low operating efficiency, complex operation, and high costs. Furthermore, traditional guide pulleys are mostly fixed in design, unable to flexibly change their position or be disassembled and reassembled according to actual needs, limiting the equipment's functional expandability.

[0003] Therefore, in order to address the above problems, there is an urgent need for a gantry crane with dynamic adjustment capabilities at multiple lifting points, a flexible structure, and strong adaptability, in order to meet the needs of efficient, precise, and multi-scenario lifting in modern engineering. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a multi-functional gantry crane with multiple lifting points.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-functional, multi-point lifting gantry crane includes a rectangular frame and a support frame for supporting the rectangular frame. Two first winches are spaced apart front to back on the left side of the upper end of the rectangular frame, and two second winches are spaced apart front to back on the right side of the upper end of the rectangular frame. A first guide pulley, cooperating with a wire rope of the first winch, is provided on the right side of the lower end of the rectangular frame, and a second guide pulley, cooperating with a wire rope of the second winch, is provided on the left side of the lower end of the rectangular frame. A mobile trolley, capable of moving left and right, is also provided on the rectangular frame. The first guide pulleys are fixedly connected to the rectangular frame, and the second guide pulleys are detachably connected to the rectangular frame via a first locking device. A second locking device is provided on the mobile trolley, which can unlock the first locking device and simultaneously lock the second guide pulleys, thereby fixing the second guide pulleys to the mobile trolley.

[0007] In some embodiments, the second guide pulley includes a pulley frame and a pulley at the lower end of the pulley frame. A mounting groove is provided on the left inner wall of the rectangular frame, and the pulley frame is slidably mounted in the mounting groove.

[0008] In some embodiments, a first support plate is provided at the upper end of the pulley frame, and a support slot is provided at the upper end of the mounting groove, wherein the first support plate is supported and hung in the support slot.

[0009] In some embodiments, the first locking device includes a first slide groove disposed on one side of the mounting groove, a first slide seat sliding back and forth in the first slide groove, a first locking plate disposed on one side of the first slide seat, a locking through hole disposed on the pulley frame, a spring connected between the first slide seat and the first slide groove to keep the first locking plate inserted into the locking through hole, and a guide slope disposed on the outer corner of the first locking plate.

[0010] In some embodiments, the second locking device includes a vertical plate disposed on the left side of the mobile trolley, a second slide groove disposed on the side of the mounting groove opposite to the first slide groove, a third slide groove disposed on the vertical plate, a second sliding seat sliding back and forth in the third slide groove, a cylinder disposed on the inner side of the vertical plate for driving the second sliding seat to slide back and forth, and a second locking plate disposed at the outer end of the second sliding seat. The second locking plate can be inserted into the second slide groove as the mobile trolley moves, and can be driven by the cylinder to insert the second locking plate into the locking through hole and push out the first locking plate.

[0011] In some embodiments, a second support plate is provided on both sides of the pulley frame, and a support bracket is provided on the outside of the vertical plate, the support bracket supporting the second support plate.

[0012] In some embodiments, a first guide cylinder for guiding the second wire rope is provided on the rectangular frame and at the rope outlet end of the second hoisting mechanism, and a second guide cylinder for guiding the second wire rope is provided at the lower end of the moving gantry crane. The first guide cylinder and the second guide cylinder have the same structure, both including a cylinder body through which the second wire rope passes. The inner walls at both ends of the cylinder body are chamfered, and ball bearings are evenly distributed along the circumference on the chamfered angle.

[0013] In some embodiments, the mobile crane includes a mobile body and a rotating seat rotatably disposed at the lower end of the mobile body, and the second locking device and the second guide cylinder are disposed on the rotating seat.

[0014] In some embodiments, the upper end of the rotating seat is provided with a rotating shaft, the upper end of the rotating shaft passes through the mobile vehicle body and is provided with a rotating disk, the upper end of the mobile vehicle body is provided with a support, the lower end of the rotating disk is rotatably supported on the support, a first gear is provided on the rotating shaft, a rotary motor is provided on the mobile vehicle body, and a second gear that meshes with the first gear is provided on the output shaft of the rotary motor.

[0015] In some embodiments, columns are spaced apart on the left and right sides of the rotating disk, and pull ropes are provided on the columns. The left and right sides of the rotating base extend outward beyond the mobile crane, and the other end of the pull rope is fixedly connected to the rotating base.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the symmetrical arrangement of four winch mechanisms on the left and right sides and the design of a movable overhead crane, the lifting points can be flexibly configured and dynamically adjusted to meet the needs of complex lifting tasks and significantly improve work efficiency and accuracy.

[0018] 2. The second guide pulley is detachably connected to the rectangular frame through the first locking device. In conjunction with the second locking device of the mobile crane, the second guide pulley can be quickly locked onto the mobile crane after unlocking, realizing seamless switching of the position of the second guide pulley, expanding the equipment function and reducing manual intervention.

[0019] 3. The second locking device locks the second guide pulley while unlocking the first locking device, simplifying the operation process, reducing the risk of misoperation, and ensuring the safety and stability of the hoisting process.

[0020] 4. The linkage design between the mobile crane and the second guide pulley avoids the redundant space occupation caused by the fixed structure of traditional gantry cranes, and is especially suitable for hoisting operations in narrow or complex sites. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural diagrams of the second guide pulley of the present invention when it is fixed to a rectangular frame;

[0022] Figure 2 This is the second three-dimensional structural diagram of the second guide pulley of the present invention when it is fixed to the rectangular frame;

[0023] Figure 3 This is a top view of the structure when the second guide pulley of the present invention is fixed to the rectangular frame;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of section AA;

[0025] Figure 5 This is an exploded view of the second guide pulley and the rectangular frame of the present invention;

[0026] Figure 6 This is a schematic diagram of the first locking device of the present invention locking the second guide pulley;

[0027] Figure 7This is a schematic diagram of the second locking device of the present invention locking the second guide pulley;

[0028] Figure 8 This is a schematic diagram of the steel wire rope of the present invention being inserted into the cylinder.

[0029] Figure 9 This is a schematic diagram of the mobile crane of the present invention moving to the leftmost side of the rectangular frame;

[0030] Figure 10 For the present invention Figure 9 Enlarged view of point A;

[0031] Figure 11 This is a three-dimensional structural diagram of the second guide pulley of the present invention when it is fixed on a moving overhead crane;

[0032] Figure 12 For the present invention Figure 11 Enlarged view of point B;

[0033] Figure 13 This is a three-dimensional structural diagram of the rotating seat of the present invention during rotation. Detailed Implementation

[0034] The following detailed description provides various embodiments or examples for carrying out the present invention. 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 the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0035] like Figures 1-13 The diagram shows a multi-functional, multi-point lifting gantry crane, comprising a rectangular frame 1 and a support frame 2 for supporting the rectangular frame 1. Two first hoisting mechanisms 3 are spaced apart front to back on the left side of the upper end of the rectangular frame 1, and two second hoisting mechanisms 4 are spaced apart front to back on the right side of the upper end of the rectangular frame 1. A first guide pulley 5, cooperating with the wire rope 10 of the first hoisting mechanism 3, is provided on the right side of the lower end of the rectangular frame 1. A second guide pulley 6, cooperating with the wire rope 20 of the second hoisting mechanism 4, is provided on the left side of the lower end of the rectangular frame 1. A mobile trolley 7, capable of moving left and right, is also provided on the rectangular frame 1. The first guide pulley 5 is fixedly connected to the rectangular frame 1, and the second guide pulley 6 is detachably connected to the rectangular frame 1 via a first locking device. A second locking device is provided on the mobile trolley 7, which can unlock the first locking device and simultaneously lock the second guide pulley 6, thereby fixing the second guide pulley 6 to the mobile trolley 7.

[0036] According to the above structure, the four winch mechanisms symmetrically arranged on the left and right sides and the design of the movable overhead crane 7 enable flexible configuration and dynamic adjustment of the lifting points, adapt to the needs of complex lifting tasks, and significantly improve work efficiency and accuracy.

[0037] The second guide pulley 6 is detachably connected to the rectangular frame 1 via the first locking device. In conjunction with the second locking device of the mobile crane 7, the second guide pulley 6 can be quickly locked onto the mobile crane 7 after unlocking, achieving seamless switching of the position of the second guide pulley 6, expanding the equipment's functions and reducing manual intervention.

[0038] At the same time, the second locking device unlocks the first locking device and fixes the second guide pulley 6, simplifying the operation process, reducing the risk of misoperation, and ensuring the safety and stability of the hoisting process.

[0039] The linkage design between the mobile crane 7 and the second guide pulley 6 avoids the redundant space occupation caused by the fixed structure of traditional gantry cranes, making it especially suitable for hoisting operations in narrow or complex sites.

[0040] See Figure 5 As shown, the second guide pulley 6 includes a pulley frame 21 and a pulley 22 at the lower end of the pulley frame 21. An installation groove 23 is provided on the inner left side of the rectangular frame 1, and the pulley frame 21 is slidably installed in the installation groove 23.

[0041] Furthermore, a first support plate 24 is provided at the upper end of the pulley frame 21, and a support slot 25 is provided at the upper end of the mounting groove 23. The first support plate 24 is supported and hung in the support slot 25, thereby improving the stability of the second guide pulley 6 after it is installed with the rectangular frame 1.

[0042] See Figures 5-7 As shown, the first locking device includes a first sliding groove 31 located on one side of the mounting groove 23, a first sliding seat 32 sliding back and forth within the first sliding groove 31, a first locking plate 33 located on one side of the first sliding seat 32, a locking through hole 34 located on the pulley frame 21, and a spring 35 connecting the first sliding seat 32 and the first sliding groove 31 to keep the first locking plate 33 inserted into the locking through hole 34. The outer corner of the first locking plate 33 is provided with a guide slope 36, while the inner corner is a straight surface structure, which restricts the pulley frame 21 from moving outward.

[0043] The specific working principle of the first locking device is as follows: Under the elastic force of the spring 35, the first sliding seat 32 and the first locking plate 33 are moved to one side, and the second locking plate 33 is inserted into the locking through hole 34 of the pulley frame 21, thereby realizing the locking of the pulley frame 21.

[0044] See Figures 5-7 , Figure 10 , Figure 12 As shown, the second locking device includes a vertical plate 41 disposed on the left side of the mobile crane 7. A second slide groove 42 is disposed on the side of the mounting groove 23 opposite to the first slide groove 31. A third slide groove 43 is disposed on the vertical plate 41. A second sliding seat 44 slides back and forth in the third slide groove 43. A cylinder 45 is disposed on the inner side of the vertical plate 41 for driving the second sliding seat 44 to slide back and forth. A second locking plate 46 is disposed at the outer end of the second sliding seat 44. The second locking plate 46 can be inserted into the second slide groove 42 as the mobile crane 7 moves, and can be driven by the cylinder 45 to insert the second locking plate 46 into the locking through hole 34 and push out the first locking plate 33.

[0045] The specific working principle of the second locking device is as follows: the trolley 7 moves to the left, so that its second locking plate 46 is inserted into the second sliding groove 42. Then, the cylinder 45 drives the second sliding seat 44 and the second locking plate 46 to move. The second locking plate 46 pushes the first locking plate 33, so that when the second locking plate 46 is inserted into the locking through hole 34, the first locking plate 33 is pushed out. This achieves the locking of the second locking device while unlocking the first locking device. Thus, the second guide pulley 6 is connected to the trolley 7 and can move with the trolley 7.

[0046] Additionally, when the second guide pulley 6 needs to be connected to the rectangular frame 1, the moving crane 7 drives the second guide pulley 6 to move to the left, so that its pulley frame 21 is inserted into the mounting slot 23. During the insertion process, one side of the pulley frame 21 abuts against the guide slope 36 of the first locking plate 33, thereby allowing the first locking plate 33 to retract into the first sliding groove 31. The pulley frame 21 can be smoothly inserted into the mounting slot 23. Then, the cylinder 45 drives the second locking plate 46 to retract, and the first locking plate 33 is inserted into the locking through hole 34 under the action of the spring 35, thereby realizing the locking of the second guide pulley 6 by the first locking device and the unlocking of the second guide pulley 6 by the second locking device.

[0047] Furthermore, a second support plate 51 is provided on both sides of the pulley frame 21, and a support plate 52 is provided on the outside of the vertical plate 41. The support plate 52 can support the second support plate 51. When the second guide pulley 6 is connected to the mobile crane 7, it can be supported by the second support plate 51 through the support plate 52, thereby improving the stability of the second guide pulley 6.

[0048] See Figures 8-11As shown, a first guide cylinder 61 for guiding the wire rope 20 is provided on the rectangular frame 1 and at the rope outlet end of the second hoisting mechanism 4. A second guide cylinder 62 for guiding the wire rope 20 is provided at the lower end of the moving crane 7. The first guide cylinder 61 and the second guide cylinder 62 have the same structure, both including a cylinder body 63 through which the wire rope 20 passes. The inner walls at both ends of the cylinder body 63 are chamfered at angles 64, and ball bearings 65 are evenly distributed along the circumference on the chamfered angles 64. Thus, the stability of the wire rope 20 during movement can be improved by the arrangement of the first guide cylinder 61 and the second guide cylinder 62.

[0049] See Figure 4 , Figure 13 As shown, the mobile crane 7 includes a mobile body 71 and a rotating seat 72 rotatably disposed at the lower end of the mobile body 71. The second locking device and the second guide cylinder 62 are disposed on the rotating seat 72. Thus, by rotating the rotating seat 72, the second guide pulley 6 can be driven to rotate, thereby driving the suspended object to rotate, realizing flexible configuration and dynamic adjustment of the lifting points, adapting to the needs of complex lifting tasks, and significantly improving work efficiency.

[0050] Furthermore, a rotating shaft 81 is provided at the upper end of the rotating seat 72. The upper end of the rotating shaft 81 passes through the mobile body 71 and is provided with a rotating disk 82. A support 83 is provided at the upper end of the mobile body 71. The lower end of the rotating disk 82 is rotatably supported on the support 83. A first gear 84 is provided on the rotating shaft 81. A rotary motor 85 is provided on the mobile body 71. A second gear 86 that meshes with the first gear 84 is provided on the output shaft of the rotary motor 85. During operation, the rotary motor 85 drives the second gear 86 to rotate. The second gear 86 meshes with the first gear 84, thereby driving the rotating shaft 82 and the rotating seat 72 to rotate. In addition, the rotating disk 82 is provided at the upper end of the rotating shaft 81. The rotating disk 82 rotates and abuts against the support 83, thereby supporting the rotating disk 83 and the rotating seat 72 and improving the stability of the rotating seat 72 during rotation.

[0051] Furthermore, there are columns 91 spaced on the left and right sides of the rotating disk 82, and pull ropes 92 are provided on the columns 91. The left and right sides of the rotating seat 72 extend outward from the moving crane 7, and the other end of the pull rope 92 is fixedly connected to the rotating seat 72. The rotating seat 72 is pulled by the pull rope 92 to improve the safety and stability of the rotating seat 72.

[0052] Of course, the rotating seat 72 cannot rotate 360°; its rotation range is only 90° counterclockwise.

[0053] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional, multi-lifting-point gantry crane, comprising a rectangular frame (1) and a support frame (2) for supporting the rectangular frame (1), characterized in that: Two first hoisting mechanisms (3) are spaced apart front to back on the left side of the upper end of the rectangular frame (1), and two second hoisting mechanisms (4) are spaced apart front to back on the right side of the upper end of the rectangular frame (1). A first guide pulley (5) is provided on the right side of the lower end of the rectangular frame (1) to cooperate with the first wire rope (10) of the first hoisting mechanism (3). A second guide pulley (6) is provided on the left side of the lower end of the rectangular frame (1) to cooperate with the second wire rope (20) of the second hoisting mechanism (4). A mobile crane (7) that can move in the left and right directions is also provided on the rectangular frame (1). The first guide pulley (5) is fixedly connected to the rectangular frame (1), and the second guide pulley... (6) A first locking device is detachably connected to the rectangular frame (1). A second locking device is provided on the mobile crane (7). The second locking device can unlock the first locking device, and at the same time, it locks the second guide pulley (6), thereby fixing the second guide pulley (6) on the mobile crane (7). The second guide pulley (6) includes a pulley frame (21) and a pulley (22) at the lower end of the pulley frame (21). An installation groove (23) is provided on the left inner wall of the rectangular frame (1). The pulley frame (21) is slidably installed in the installation groove (23). The first locking device includes The device includes a first sliding groove (31) located on one side of the mounting groove (23), a first sliding seat (32) sliding back and forth within the first sliding groove (31), a first locking plate (33) located on one side of the first sliding seat (32), a locking through hole (34) located on the pulley frame (21), a spring (35) connecting the first sliding seat (32) and the first sliding groove (31) to keep the first locking plate (33) inserted into the locking through hole (34), a guide slope (36) located on the outer corner of the first locking plate (33), and a second locking device including a vertical plate (41) located on the left side of the mobile crane (7). The mounting groove (23) includes a first sliding groove (31) located on one side of the mounting groove (23), a first sliding seat (32) sliding back and forth within the first sliding groove (31), a first locking plate (33) located on one side of the first sliding seat (32), a locking through hole (34) located on the pulley frame (21), and a locking through hole (34) located on the pulley frame (21). The second locking device includes a vertical plate (41) located on the left side of the mobile crane (7), and the mounting groove (23) includes a first sliding groove (31) located on one side of the mounting groove (23). 3) A second slide groove (42) is provided on one side opposite to the first slide groove (31), and a third slide groove (43) is provided on the vertical plate (41). A second sliding seat (44) slides back and forth in the third slide groove (43). A cylinder (45) for driving the second sliding seat (44) to slide back and forth is provided on the inner side of the vertical plate (41). A second locking plate (46) is provided at the outer end of the second sliding seat (44). The second locking plate (46) can be inserted into the second slide groove (42) as the moving crane (7) moves, and can be driven by the cylinder (45) to insert the second locking plate (46) into the locking through hole (34) and push out the first locking plate (33).

2. The multi-functional multi-lifting-point gantry crane according to claim 1, characterized in that: A first support plate (24) is provided at the upper end of the pulley frame (21), and a support slot (25) is provided at the upper end of the mounting groove (23). The first support plate (24) is supported and hung in the support slot (25).

3. The multi-functional multi-lifting-point gantry crane according to claim 1, characterized in that: A second support plate (51) is provided on both sides of the pulley frame (21), and a support plate (52) is provided on the outside of the vertical plate (41). The support plate (52) can support the second support plate (51).

4. A multi-functional, multi-lifting-point gantry crane according to claim 1, characterized in that: A first guide cylinder (61) for guiding the second wire rope (20) is provided on the rectangular frame (1) and at the rope outlet end of the second hoisting mechanism (4). A second guide cylinder (62) for guiding the second wire rope (20) is provided at the lower end of the moving crane (7). The first guide cylinder (61) and the second guide cylinder (62) have the same structure, both including a cylinder body (63) through which the second wire rope (20) passes. An incised angle (64) is provided on the inner wall at both ends of the cylinder body (63), and ball bearings (65) are evenly distributed along the circumference on the incised angle (64).

5. A multi-functional, multi-lifting-point gantry crane according to claim 4, characterized in that: The mobile crane (7) includes a mobile car body (71) and a rotating seat (72) rotatably disposed at the lower end of the mobile car body (71). The second locking device and the second guide cylinder (62) are disposed on the rotating seat (72).

6. A multi-functional, multi-lifting-point gantry crane according to claim 5, characterized in that: The upper end of the rotating seat (72) is provided with a rotating shaft (81), the upper end of the rotating shaft (81) passes through the moving vehicle body (71) and is provided with a rotating disk (82), the upper end of the moving vehicle body (71) is provided with a support (83), the lower end of the rotating disk (82) is rotatably supported on the support (83), a first gear (84) is provided on the rotating shaft (81), a rotary motor (85) is provided on the moving vehicle body (71), and a second gear (86) that meshes with the first gear (84) is provided on the output shaft of the rotary motor (85).

7. A multi-functional, multi-lifting-point gantry crane according to claim 6, characterized in that: There are columns (91) spaced on the left and right sides of the rotating disk (82), and pull ropes (92) are provided on the columns (91). The left and right sides of the rotating seat (72) extend outward from the moving crane (7), and the other end of the pull rope (92) is fixedly connected to the rotating seat (72).

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