Bridge crane for hoisting tubular object

Abstract

The utility model relates to the technical field of cranes, in particular to a bridge crane for hoisting tubular objects, which comprises a crane main beam, a crane carriage is assembled on the crane main beam, a hoisting mechanism is assembled on the crane carriage, a hanger is hung on the hoisting mechanism, the hanger comprises a support beam, two mounting plates are arranged at the bottom of the support beam, and the two mounting plates are arranged on the support beam. A first adjusting rod is rotationally connected to the inner side of the mounting plate, a driving mechanism is in transmission connection to the first adjusting rod, inner threaded cylinders are in threaded connection to the two ends of the first adjusting rod, an inner supporting plate is fixedly connected to one end of each inner threaded cylinder, and a clamping assembly is arranged on the outer side of each inner supporting plate. The first adjusting rod can be driven to rotate through the driving mechanism, the first adjusting rod can enable the two inner threaded cylinders to drive the inner supporting plates to be far away from each other, the inner supporting plates abut against the inner side wall of a tubular object, the outer side wall of the tubular object is clamped by arranging the clamping assembly, and therefore the tubular object can be fixed; and further, the condition that the tubular object slips off can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a bridge crane for hoisting tubular objects. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range. Among them, a bridge crane is a common type of crane. A bridge crane generally includes a crane main beam, end beam, lifting trolley, spreader, trolley traveling mechanism and trolley traveling mechanism. The lifting trolley is equipped with a lifting mechanism, which is connected to the spreader through a wire rope.

[0003] At present, when lifting tubular objects, bridge cranes usually use ropes to tie the two ends of the tubular objects, and then hang the ropes on the lifting equipment for lifting. However, since the surface of the tubular objects is smooth and has no attachments, the ropes cannot fix the tubular objects well, which makes the tubular objects easy to slip when lifting. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0004] The utility model provides a bridge crane for hoisting tubular objects, so as to solve the problems raised in the background technology.

[0005] Material toggling mechanism, its both ends are connected with the up-down knob.The hinge parts are arranged on the top of the crane body, and the hinge parts are connected along the length of the crane body to form a around brackets. The hinge parts are connected along the length of the crane body to form a around brackets. The upper and lower ends of the crane body are connected by a tongue, and the collar part is connected with the indexing mechanism.

[0006] Preferably, the clamping assembly includes a first fixed plate fixedly connected to the inner side of the mounting plate, a screw parallel to the first adjusting rod is threadedly connected to the first fixed plate, one end of the screw away from the inner support plate is fixedly connected to the first hand wheel, and the other end of the screw is rotatably connected to the outer clamping plate, and first guide rods parallel to the screw are provided on both sides of the screw, the first guide rod is slidably connected to the first fixed plate, and the first guide rod is fixedly connected to the outer clamping plate.

[0007] Preferably, a second fixed plate located at both ends of the first adjusting rod is fixedly connected to the mounting plate, the internal threaded cylinder passes through the second fixed plate and is slidably connected to the second fixed plate, a second guide rod parallel to the internal threaded cylinder is provided on both sides of the internal threaded cylinder, the second guide rod passes through the first fixed plate and is slidably connected to the first fixed plate, and the second guide rod is fixedly connected to the inner support plate.

[0008] Preferably, two third fixing plates located between the two second fixing plates are fixedly connected to the mounting plate, and the first adjusting rod is rotatably connected to the third fixing plates.

[0009] Preferably, the driving mechanism includes a transmission rod rotatably connected to the mounting plate and arranged horizontally, one end of the transmission rod extends into the mounting plate and is transmission-connected to the first adjustment rod through a transmission assembly.

[0010] Preferably, a sliding groove is provided on the bottom surface of the support beam along the length direction of the support beam, and a second adjusting rod parallel to the sliding groove is rotatably connected in the sliding groove, one end of the second adjusting rod extends to the outside of the support beam and is fixedly connected to the second hand wheel, and both ends of the second adjusting rod are provided with external threads, and the threads at both ends of the second adjusting rod rotate in opposite directions, and both ends of the second adjusting rod are threadedly connected to sliders, the sliders are located in the sliding groove and are slidably connected to the sliding groove, and the bottom surface of the slider is fixedly connected to the mounting plate.

[0011] Preferably, two sets of symmetrically arranged pulley blocks are provided on the top surface of the support beam, and the pulley blocks are connected to the lifting mechanism through steel wire ropes.

[0012] The beneficial effects of the present invention are as follows: (1) the present invention can move the inner support plate into the tubular object, and then drive the first adjusting rod to rotate through the driving mechanism. Since the threads at both ends of the first adjusting rod have opposite rotation directions, the first adjusting rod can make the two inner threaded tubes drive the inner support plates to move away from each other, so that the inner support plates are pressed against the inner side wall of the tubular object, and by setting a clamping assembly, the outer side wall of the tubular object can be clamped, thereby fixing the tubular object and reducing the possibility of the tubular object slipping during hoisting; (2) since the threads at both ends of the second adjusting rod have opposite rotation directions, when the second adjusting rod is driven to rotate by the second hand wheel, the second adjusting rod can drive the two sliders to drive the mounting plates closer to or farther from each other, thereby adjusting the distance between the two mounting plates according to the length of the tubular object, thereby being suitable for fixing tubular objects of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a structural diagram of the utility model sling;

[0015] Figure 3 This is a schematic structural diagram of a cross-section of the sling of the utility model;

[0016] Figure 4 It is a structural diagram of the connection between the mounting plate, the first adjustment rod, the inner support plate and the clamping assembly of the utility model.

[0017] Figure numerals: 1. Crane main beam, 2. Carriage traveling mechanism, 3. Hoisting trolley, 4. Lifting mechanism, 5. Spreader, 51. Support beam, 52. Mounting plate, 53. First adjusting rod, 54. Driving mechanism, 541. Transmission rod, 542. Transmission assembly, 55. External thread, 56. Internal threaded cylinder, 57. Inner support plate, 58. Clamping assembly, 581. First fixed plate, 582. Screw, 583. External clamping plate, 584. First hand wheel, 585. First guide rod, 59. Second fixed plate, 510. Second guide rod, 511. Third fixed plate, 512. Slide groove, 513. Second adjusting rod, 514. Second hand wheel, 515. Slider, 516. Pulley block, 6. Wire rope. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings. Figure 1 The direction in shall prevail.

[0019] like Figure 1-4 As shown, the utility model provides a bridge crane for lifting tubular objects, including a crane main beam 1, with a trolley walking mechanism 2 provided at both ends of the crane main beam 1, a lifting trolley 3 installed on the crane main beam 1, a lifting mechanism 4 installed on the lifting trolley 3, a sling 5 for lifting tubular objects hung on the lifting mechanism 4, and the sling 5 includes a horizontally arranged support beam 51, and two mounting plates 52 that can slide along the length direction of the support beam 51 are symmetrically provided at the bottom of the support beam 51, and a first adjusting rod 53 that is rotatably connected to the inner side of the mounting plate 52 and is perpendicular to the support beam 51 in the horizontal direction. The first adjusting rod 53 is transmission-connected with a driving mechanism 54 for driving the first adjusting rod 53 to rotate. External threads 55 are provided at both ends of the first adjusting rod 53. The threads at both ends of the first adjusting rod 53 rotate in opposite directions. Both ends of the first adjusting rod 53 are threadedly connected with an internal threaded tube 56 that is slidably connected to the mounting plate 52. The end of the internal threaded tube 56 away from the first adjusting rod 53 is fixedly connected with an inner support plate 57. In this embodiment, the inner support plate 57 is an arc-shaped plate that is adapted to the inner wall of the tubular object. The outer sides of the two inner support plates 57 are provided with a clamping assembly 58 for clamping the outer wall of the tubular object.

[0020] Specifically, when in use, the tubular object is placed parallel to the support beam 51, and the sling 5 is moved to the top of the tubular object by the trolley walking mechanism 2 and the lifting trolley 3, and the sling 5 is slowly lowered by the lifting mechanism 4, so that the two mounting plates 52 are respectively located at the two ends of the tubular object, and then the mounting plates 52 are slid toward the ends of the tubular object until the inner side of the mounting plates 52 is against the ends of the tubular object. At this time, the inner support plate 57 moves into the end of the tubular object, and then the first adjusting rod 53 is rotated by the driving mechanism 54. Since the threads at both ends of the first adjusting rod 53 are rotated in opposite directions, the first adjusting rod 53 can make the two internal threaded tubes 56 drive the inner support plates 57 away from each other, so that the inner support plates 57 are pressed against the inner wall of the tubular object, and then the clamping assembly 58 is adjusted to press against the outer wall of the tubular object, so that the two ends of the tubular object can be fixed, thereby reducing the situation of the tubular object slipping during lifting.

[0021] In some embodiments, the clamping assembly 58 includes a first fixed plate 581 fixedly connected to the inner side of the mounting plate 52, and a screw 582 parallel to the first adjusting rod 53 is threadedly connected to the first fixed plate 581, and the screw 582 is coaxially arranged with the first adjusting rod 53. The end of the screw 582 away from the inner support plate 57 is fixedly connected to the first hand wheel 584, and the other end of the screw 582 is rotatably connected to the outer clamping plate 583. Both sides of the screw 582 are provided with a first guide rod 585 parallel to the screw 582, the first guide rod 585 is slidably connected to the first fixed plate 581, and the first guide rod 585 is fixedly connected to the outer clamping plate 583. Specifically, after the inner support plate 57 is pressed against the inner wall of the tubular object, the screw 582 is driven to rotate by rotating the first hand wheel 584, and the screw 582 drives the outer clamping plate 583 to move toward the outer wall of the tubular object, so that the outer clamping plate 583 is pressed against the outer wall of the tubular object. Under the action of the inner support plate 57 and the outer clamping plate 583, the tubular object can be fixed.

[0022] In some embodiments, the mounting plate 52 is fixedly connected to a second fixing plate 59 located at both ends of the first adjusting rod 53, the internal threaded tube 56 passes through the second fixing plate 59 and is slidably connected to the second fixing plate 59, and both sides of the internal threaded tube 56 are provided with a second guide rod 510 parallel to the internal threaded tube 56, the second guide rod 510 passes through the first fixing plate 581 and is slidably connected to the first fixing plate 581, the second guide rod 510 is fixedly connected to the inner support plate 57, and the internal threaded tube 56 is slidably connected to the mounting plate 52 through the second fixing plate 59 and the second guide rod 510; two third fixing plates 511 located between the two second fixing plates 59 are fixedly connected to the mounting plate 52, the first adjusting rod 53 is rotatably connected to the third fixing plate 511, and the first adjusting rod 53 is rotatably connected to the mounting plate 52 through the third fixing plate 511.

[0023] In some embodiments, the drive mechanism 54 includes a horizontally arranged transmission rod 541 that is rotatably connected to the mounting plate 52. One end of the transmission rod 541 extends into the mounting plate 52 and is transmission-connected to the first adjustment rod 53 through a transmission assembly 542. The transmission assembly 542 can be a bevel gear transmission mechanism or a worm gear transmission mechanism. When the transmission assembly 542 is a bevel gear transmission mechanism, the end of the transmission rod 541 away from the bevel gear transmission mechanism is transmission-connected to a motor, which is mounted on the mounting plate 52. When the transmission assembly 542 is a worm gear transmission mechanism with a self-locking function, the end of the transmission rod 541 away from the worm gear transmission mechanism is fixedly connected to a handwheel located outside the mounting plate 52. Specifically, when in use, the transmission rod 541 is rotated, and the transmission rod 541 can drive the first adjustment rod 53 to rotate through the transmission assembly 542, thereby facilitating the rotation of the first adjustment rod 53.

[0024] In some embodiments, a slot 512 is defined on the bottom surface of the support beam 51 along its length. A second adjustment rod 513, parallel to the slot 512, is rotatably connected within the slot 512. One end of the second adjustment rod 513 extends outside the support beam 51 and is fixedly connected to a second handwheel 514. External threads 55 are defined at both ends of the second adjustment rod 513. The threads at both ends of the second adjustment rod 513 rotate in opposite directions. Sliders 515 are threadedly connected to both ends of the second adjustment rod 513. The slides 515 are positioned within and slidably connected to the slot 512. The bottom surfaces of the slides 515 are fixedly connected to the mounting plate 52. Specifically, because the threads at both ends of the second adjustment rod 513 rotate in opposite directions, when the second adjustment rod 513 is rotated by the second handwheel 514, the second adjustment rod 513 can drive the two slides 515 to move the mounting plates 52 closer to or further away from each other, thereby adjusting the distance between the two mounting plates 52 according to the length of the tubular object, thereby being suitable for fixing tubular objects of different lengths.

[0025] In some embodiments, two symmetrically arranged pulley blocks 516 are provided on the top surface of the support beam 51. The pulley blocks 516 are connected to the lifting mechanism 4 via steel wire ropes 6. Specifically, during use, the lifting mechanism 4 reels in and unreels the steel wire ropes 6, which, through the pulley blocks 516, drive the support beam 51 up and down, thereby hoisting the tubular object.

[0026] The above embodiments can be combined with each other.

[0027] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the scope of protection of the technical solution of the utility model.

Claims

1. A bridge crane for lifting tubular objects, comprising a crane main beam, with trolley travel mechanisms provided at both ends of the crane main beam, a lifting trolley mounted on the crane main beam, and a lifting mechanism mounted on the lifting trolley, characterized in that: The lifting mechanism is hung with a sling for lifting tubular objects, and the sling includes a horizontally arranged support beam, and two mounting plates that can slide along the length direction of the support beam are symmetrically arranged at the bottom of the support beam. The inner side of the mounting plate is rotatably connected to a first adjusting rod perpendicular to the support beam in the horizontal direction, and the first adjusting rod is transmission-connected with a driving mechanism for driving the first adjusting rod to rotate. Both ends of the first adjusting rod are provided with external threads, and the threads at both ends of the first adjusting rod rotate in opposite directions. Both ends of the first adjusting rod are threadedly connected with an internal threaded cylinder that is slidably connected to the mounting plate, and the end of the internal threaded cylinder away from the first adjusting rod is fixedly connected to the inner support plate, and the outer sides of the two inner support plates are provided with clamping components for clamping the outer wall of the tubular object.

2. A tubular object hoisting bridge crane according to claim 1, characterized in that: The clamping assembly includes a first fixed plate fixedly connected to the inner side of the mounting plate, a screw parallel to the first adjusting rod being threadedly connected to the first fixed plate, one end of the screw away from the inner support plate is fixedly connected to the first hand wheel, and the other end of the screw is rotatably connected to the outer clamping plate, and first guide rods parallel to the screw are provided on both sides of the screw, the first guide rod is slidably connected to the first fixed plate, and the first guide rod is fixedly connected to the outer clamping plate.

3. The bridge crane for lifting tubular objects according to claim 1, characterized in that: The mounting plate is fixedly connected to a second fixing plate located at both ends of the first adjusting rod, the internal threaded cylinder passes through the second fixing plate and is slidably connected to the second fixing plate, and second guide rods parallel to the internal threaded cylinder are provided on both sides of the internal threaded cylinder, the second guide rods pass through the first fixing plate and are slidably connected to the first fixing plate, and the second guide rods are fixedly connected to the inner support plate.

4. A tubular object hoisting bridge crane according to claim 3, characterized in that: The mounting plate is fixedly connected to two third fixing plates located between the two second fixing plates, and the first adjusting rod is rotatably connected to the third fixing plates.

5. The bridge crane for lifting tubular objects according to claim 1, characterized in that: The driving mechanism includes a transmission rod rotatably connected to the mounting plate and arranged horizontally, one end of the transmission rod extends into the mounting plate and is transmission-connected to the first adjustment rod through a transmission assembly.

6. The bridge crane for lifting tubular objects according to claim 1, characterized in that: The cam is provided with a second adjusting rod which is parallel to the cam and is rotatably connected to the bottom surface of the support beam. One end of the second adjusting rod extends to the outside of the support beam and is fixedly connected to the second hand wheel. Both ends of the second adjusting rod are provided with external threads, and the threads at both ends of the second adjusting rod rotate in opposite directions. Both ends of the second adjusting rod are threadedly connected to a slider, which is located in the cam and is slidably connected to the cam. The bottom surface of the slider is fixedly connected to the mounting plate.

7. The bridge crane for lifting tubular objects according to claim 1, characterized in that: Two sets of symmetrically arranged pulley blocks are provided on the top surface of the support beam, and the pulley blocks are connected to the lifting mechanism through steel wire ropes.

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