A double-beam bridge crane for lifting pipe elements

Abstract

The utility model relates to a double-beam bridge crane for hoisting pipe fittings, comprising a double-beam bridge crane body, the double-beam bridge crane body comprising two main beams, a hoist trolley is installed between the two main beams, a hoisting mechanism with a steel wire rope and a lifting hook is installed on the hoist trolley, a top plate is also installed on the hoist trolley below the main beams, the steel wire rope of the hoisting mechanism penetrates through the top plate, a hanger is hung on the lifting hook of the hoisting mechanism, a vertically distributed foldable telescopic arm is installed between the two sides of the hanger and the top plate; the hanger is a rectangular frame, and a plurality of clamping positioning devices are installed on the hanger, each clamping positioning device comprises a vertically installed and telescopic compression mechanism on the hanger, a lifting rope is symmetrically installed on the hanger outside the two sides of each compression mechanism, and a clamping mechanism is installed on each lifting rope, the utility model can reduce the swing amplitude of the hanger; on this basis, the swing amplitude of the pipe fittings during hoisting can be reduced to reduce the risk of pipe falling.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a double-beam bridge crane for lifting pipe fittings. Background Technology

[0002] Currently, when hoisting pipe fittings indoors, double-girder bridge cranes are sometimes used. Specifically, in use, double-girder bridge cranes typically raise and lower the lifting device by winding and unwinding the wire rope. However, with this setup, the swinging of the wire rope can sometimes cause the lifting device to swing too much, posing a safety hazard of the pipe fitting falling. In addition, the existing lifting devices are not suitable for hoisting multiple pipe fittings. Therefore, there are still shortcomings and deficiencies in the current technology. Utility Model Content

[0003] The purpose of this utility model is to provide a double-girder bridge crane for lifting pipe fittings, so as to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] A double-girder bridge crane for pipe lifting includes a double-girder bridge crane body, which includes two horizontally opposite main beams. A lifting trolley that can move along the main beams is installed between the two main beams. A lifting mechanism with wire rope and hook is installed on the lifting trolley. A top plate located below the main beams is also installed on the lifting trolley. The wire rope of the lifting mechanism passes through a vertically opened through hole in the top plate and then hangs a hanger parallel to the top plate on the hook of the lifting mechanism. Vertically distributed foldable telescopic booms are installed on both sides of the top surface of the hanger and between the hanger and the top plate.

[0006] The hanger is a rectangular frame, and multiple sets of clamping and positioning devices are installed on the hanger along the length of the hanger. Each clamping and positioning device includes a vertically mounted and retractable clamping mechanism on the hanger. Suspension ropes are symmetrically installed on the hanger outside the two sides of each set of clamping mechanisms. Each suspension rope is located on the side of the clamping mechanism closest to the long side of the hanger, and each suspension rope is equipped with a clamping mechanism capable of clamping pipe fittings.

[0007] Furthermore, each of the clamping mechanisms includes a U-shaped clamping plate connected to the lifting rope. One end of each U-shaped clamping plate is threaded with a clamping threaded rod, one end of which is located inside the U-shaped clamping plate, and the other end of which is fitted with a handwheel.

[0008] Furthermore, there are two suspension ropes located on both sides of each clamping mechanism, and each suspension rope is equipped with the clamping mechanism.

[0009] Furthermore, each of the hanging frames located on both sides of each clamping mechanism is provided with a vertically penetrating strip slide. The strip slide is parallel to the width direction of the hanging frame, and a T-shaped slider that can move along the width direction of the hanging frame is installed in each strip slide. The vertical bottom end of the T-shaped slider passes through the hanging frame and is connected to the hanging rope.

[0010] Furthermore, the two transverse ends of the T-shaped slider are slidably connected to the hanger through the grooves opened on the inner wall of the strip slide. The two transverse ends of the T-shaped slider are vertically provided with positioning holes. Multiple threaded through holes distributed along the width direction of the hanger are vertically provided on the top surface of the hanger located on both sides of each strip slide. A locking screw is threadedly connected to one of the threaded through holes on one side of the strip slide. The bottom end of the locking screw is located in the positioning hole.

[0011] Furthermore, each of the clamping mechanisms includes an electric telescopic rod vertically installed on the bottom surface of the hanger, the bottom end of the electric telescopic rod being the telescopic end, and a clamping block being installed at the bottom end of each electric telescopic rod.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] This invention, based on the existing double-girder bridge crane body, improves the stability of the crane during lifting by installing a top plate located below the main beam on the trolley frame and installing two sets of foldable telescopic booms between the top plate and the crane frame, thereby reducing the swing amplitude of the crane frame. Furthermore, by installing multiple sets of clamping and positioning devices on the crane frame, multiple pipe fittings can be lifted. During use, since the clamping mechanism is connected to the crane frame via lifting ropes, it is easy to flexibly use the clamping mechanism to hold and lift pipe fittings, thus facilitating the lifting of multiple pipe fittings. In addition, by installing a clamping mechanism on the crane frame, after the two symmetrically arranged clamping mechanisms clamp the two ends of the lifted pipe fitting, the clamping mechanism can be used to clamp the pipe fitting, keeping the lifting rope taut. This, combined with the foldable telescopic booms, reduces the swing amplitude of the pipe fittings during lifting, thereby reducing the risk of the pipe fittings falling. Additionally, it also prevents collisions between adjacent pipe fittings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 One of the three-dimensional structural diagrams of the middle part of the device;

[0016] Figure 3 for Figure 1 A magnified structural diagram of part A in the middle;

[0017] Figure 4 for Figure 1 The second schematic diagram of the three-dimensional structure of the middle part of the device;

[0018] Figure 5 This is a structural schematic diagram of some of the devices of this utility model in use;

[0019] Figure 6 This is a schematic diagram of the structure of a pipe fitting in the prior art.

[0020] Reference numerals: 1. Crane trolley; 2. Lifting frame; 21. Strip slide; 22. Slide groove; 23. Threaded through hole; 3. Clamping mechanism; 31. U-shaped clamping plate; 32. Clamping threaded rod; 33. Handwheel; 4. Pressing mechanism; 41. Electric telescopic rod; 42. Pressing block; 5. Double girder bridge crane body; 51. Main beam; 52. End beam; 53. Trolley traveling mechanism; 6. T-shaped slider; 61. Positioning hole; 7. Lifting mechanism; 71. Wire rope; 72. Hook; 8. Top plate; 81. Through hole; 9. Connecting rod; 10. Foldable telescopic boom; 11. Lifting rope; 12. Locking screw; 13. Pipe fitting; 14. Clamping area. Detailed Implementation

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 5 As shown, this utility model provides a double-girder bridge crane for lifting pipe fittings 13 with openings at both ends. The utility model includes a double-girder bridge crane body 5, which includes two horizontally opposite main beams 51. Specifically, the double-girder bridge crane body 5 also includes two horizontally opposite end beams 52. Each end beam 52 is equipped with a trolley traveling mechanism 53. Two main beams 51 are installed between the two end beams 52. The end beams 52, trolley traveling mechanism 53, and main beams 51 are all prior art. The trolley traveling mechanism 53 includes a traveling motor and traveling wheels, etc. A lifting trolley 1 capable of moving along the main beams 51 is installed between the two main beams 51. The lifting trolley 1 is equipped with a lifting mechanism 7 with a wire rope 71 and a hook 72. The lifting mechanism 7 and the lifting trolley 1 are both prior art. Specifically, the lifting mechanism 7 is a winch with a brake, which is a prior art type. The lifting trolley 1 includes a frame and a trolley traveling mechanism, etc.

[0023] The trolley 1 is also equipped with a top plate 8 located below the main beam 51. Specifically, the top plate 8 is connected to the frame of the trolley 1 via a connecting rod 9 located between the two main beams 51. The wire rope 71 of the hoisting mechanism 7 passes through the top plate 8 through a vertically opened through hole 81. A hanger 2, which is parallel to the top plate 8, is attached to the hook 72 of the hoisting mechanism 7. Specifically, because the top plate 8 has a through hole 81, the top plate 8 does not hinder the hoisting mechanism 7 from winding and unwinding the wire rope 71. In use, when the hoisting mechanism 7 winds up the wire rope 71, it can drive the hanger 2 to rise. When the lifting mechanism 7 unwinds the wire rope 71, the hanger 2 can descend under its own weight. Vertically distributed foldable telescopic arms 10 are installed on both sides of the top surface of the hanger 2 and between it and the top plate 8. Specifically, the foldable telescopic arm 10 includes several sections of arms that are hinged together in sequence, and both ends of the foldable telescopic arm 10 are hinged to the hanger 2 and the top plate 8, respectively. In use, the foldable telescopic arm 10 can be folded and extended synchronously with the lifting and lowering of the hanger 2. By setting the foldable telescopic arm 10, the stability of the hanger 2 during the lifting and lowering process can be improved, thereby reducing the swing amplitude of the hanger 2.

[0024] Furthermore, the hanger 2 is a rectangular frame, and multiple sets of clamping and positioning devices are installed on the hanger 2 along its length. Each set of clamping and positioning devices can clamp and lift one pipe fitting 13, thus allowing multiple pipe fittings 13 to be lifted. Each clamping and positioning device includes a vertically mounted and retractable clamping mechanism 4 on the hanger 2. Lifting ropes 11 are symmetrically installed on the hanger 2 on both sides of each clamping mechanism 4. The lifting ropes 11 have the same structural composition as the wire rope 71. Each lifting rope 11 is located on the side of the clamping mechanism 4 closest to the long side of the hanger 2, and each lifting rope 11 is equipped with a clamping mechanism 3 capable of clamping the pipe fitting 13. The clamping mechanism 3 is used to clamp the end position of the pipe fitting 13. The clamping mechanism 3 and the hanger 2 are connected by a lifting rope 11. This allows for flexible use of the clamping mechanism 3 to clamp and lift the pipe fitting 13, facilitating the lifting of multiple pipe fittings 13. When the two symmetrically arranged clamping mechanisms 3 clamp the two ends of the pipe fitting 13 and the pipe fitting 13 is parallel to the width direction of the hanger 2, the clamping mechanism 4 can be used to clamp the pipe fitting 13, keeping the lifting rope 11 taut. This, combined with the foldable telescopic arm 10, reduces the swing amplitude of the pipe fitting 13 during lifting, thus lowering the risk of the pipe fitting 13 falling. In addition, it also prevents collisions between adjacent pipe fittings 13.

[0025] The specific configuration of clamping mechanism 3 is as follows: Figure 1 , Figures 3 to 5As shown, each clamping mechanism 3 includes a U-shaped clamping plate 31 connected to the lifting rope 11. One end of each U-shaped clamping plate 31 is threadedly connected to a clamping threaded rod 32, with one end of each threaded rod 32 located within the U-shaped clamping plate 31. The other end of each threaded rod 32 is fitted with a handwheel 33, which facilitates the rotation of the threaded rod 32. In use, it can be operated as follows: Figure 5 As shown, the U-shaped clamping plate 31 is first installed at the end of the pipe fitting 13 through the U-shaped opening of the U-shaped clamping plate 31. Then, by rotating the clamping threaded rod 32, the U-shaped clamping plate 31 can be fixed on the pipe fitting 13 so that the clamping mechanism 3 can clamp and lift the pipe fitting 13.

[0026] Furthermore, such as Figure 1 and Figure 3 As shown, there are two suspension ropes 11 located on both sides of each clamping mechanism 4, and each suspension rope 11 is equipped with the clamping mechanism 3. Thus, during use, the clamping mechanism 3 can be used to clamp the following: Figure 6 The clamping area 14 on the pipe fitting 13 shown in the figure allows each set of clamping and positioning devices to lift the pipe fitting 13 from four points, thereby improving the stability of clamping and lifting the pipe fitting 13.

[0027] Furthermore, such as Figure 2 and Figure 4 As shown, each of the hangers 2 located on both sides of each clamping mechanism 4 is provided with a vertically penetrating strip slide 21. The strip slide 21 is parallel to the width direction of the hanger 2, and each strip slide 21 is equipped with a T-shaped slider 6 that can move along the width direction of the hanger 2. The vertical bottom end of the T-shaped slider 6 passes through the hanger 2 and is connected to the lifting rope 11. Specifically, in use, the position of the T-shaped slider 6 can be adjusted on the hanger 2 according to its own needs, and the position of the lifting rope 11 can be adjusted along the width direction of the hanger 2 so that the clamping mechanism 3 can be used to clamp and lift pipes 13 of different lengths.

[0028] The specific configuration of the T-shaped slider 6 being able to move along the width direction of the hanger 2 is as follows: Figure 2 and Figure 4As shown, the two ends of the T-shaped slider 6 are slidably connected to the hanger 2 through the grooves 22 opened on the inner wall of the strip slide 21. The two ends of the T-shaped slider 6 are vertically provided with positioning holes 61. On the top surface of the hanger 2 located on both sides of each strip slide 21, there are multiple threaded through holes 23 distributed along the width direction of the hanger 2. A locking screw 12 is threadedly connected to one of the threaded through holes 23 on one side of the strip slide 21. The bottom end of the locking screw 12 is located in the positioning hole 61. This can fix the position of the T-shaped slider 6 on the hanger 2. By rotating the locking screw 12 in the opposite direction, the position of the T-shaped slider 6 can be adjusted along the strip slide 21 after the locking screw 12 is removed. In the process of adjusting the position of the T-shaped slider 6, the positioning hole 61 on the T-shaped slider 6 can be aligned with the adjacent threaded through hole 23, and then the position of the T-shaped slider 6 can be fixed by the locking screw 12.

[0029] The specific configuration of the clamping mechanism 4 is as follows: Figures 1 to 3 As shown, each clamping mechanism 4 includes an electric telescopic rod 41 vertically mounted on the bottom surface of the hanger 2. The electric telescopic rod 41 can be configured as an electric push rod and is externally connected to a power supply and a start / stop switch mounted on the hanger 2. The bottom end of the electric telescopic rod 41 is the telescopic end, and a clamping block 42 is installed at the bottom end of each electric telescopic rod 41. The bottom surface of the clamping block 42 can be configured as an arc-shaped surface that matches the top of the circular pipe fitting 13. Specifically, in the initial state, the telescopic end of the electric telescopic rod 41 is in a retracted state. When in use, by extending the telescopic end of the electric telescopic rod 41, the clamping block 42 can be driven to clamp the top position of the pipe fitting 13, so that the lifting rope 11 is in a taut state, thereby reducing the swing amplitude of the pipe fitting 13 during the lifting process.

[0030] The foregoing has shown and described 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-girder bridge crane for lifting pipe fittings, comprising a double-girder bridge crane body, the double-girder bridge crane body comprising two horizontally opposite main beams, a lifting trolley movable along the main beams installed between the two main beams, the lifting trolley being equipped with a lifting mechanism with wire ropes and hooks, characterized in that: The lifting trolley is also equipped with a top plate located below the main beam. The wire rope of the lifting mechanism passes through the top plate through a vertically opened through hole. A hanger is hung on the hook of the lifting mechanism and is arranged parallel to the top plate. Vertically distributed foldable telescopic arms are installed on both sides of the top surface of the hanger and between it and the top plate. The hanger is a rectangular frame, and multiple sets of clamping and positioning devices are installed on the hanger along the length of the hanger. Each clamping and positioning device includes a vertically mounted and retractable clamping mechanism on the hanger. Suspension ropes are symmetrically installed on the hanger outside the two sides of each set of clamping mechanisms. Each suspension rope is located on the side of the clamping mechanism closest to the long side of the hanger, and each suspension rope is equipped with a clamping mechanism capable of clamping pipe fittings.

2. The double-girder bridge crane for pipe fitting hoisting according to claim 1, characterized in that: Each clamping mechanism includes a U-shaped clamping plate connected to the lifting rope. One end of each U-shaped clamping plate is threaded with a clamping threaded rod, and one end of each clamping threaded rod is located inside the U-shaped clamping plate. The other end of each clamping threaded rod is fitted with a handwheel.

3. A double-girder bridge crane for pipe lifting according to claim 1 or 2, characterized in that: There are two suspension ropes located on both sides of each clamping mechanism, and each suspension rope is equipped with the clamping mechanism.

4. A double-girder bridge crane for pipe lifting according to claim 1, characterized in that: Each set of clamping mechanisms has vertically penetrating strip slides on the hangers located on both sides. The strip slides are parallel to the width direction of the hangers, and each strip slide has a T-shaped slider that can move along the width direction of the hangers. The vertical bottom end of the T-shaped slider passes through the hangers and is connected to the suspension rope.

5. A double-girder bridge crane for pipe fitting hoisting according to claim 4, characterized in that: The two ends of the T-shaped slider are slidably connected to the hanger through the grooves opened on the inner wall of the strip slide. The two ends of the T-shaped slider are vertically provided with positioning holes. Multiple threaded through holes distributed along the width direction of the hanger are vertically provided on the top surface of the hanger located on both sides of each strip slide. A locking screw is threadedly connected to one of the threaded through holes on one side of the strip slide. The bottom end of the locking screw is located in the positioning hole.

6. A double-girder bridge crane for pipe fitting hoisting according to claim 1, characterized in that: Each of the clamping mechanisms includes an electric telescopic rod that is vertically installed on the bottom surface of the hanger. The bottom end of the electric telescopic rod is the telescopic end, and a clamping block is installed at the bottom end of each electric telescopic rod.

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