Downward rotating hanging beam bridge crane

Abstract

The utility model discloses a lower rotary hanging beam bridge crane which comprises a hoisting trolley frame and a hanging beam lifting appliance assembly, the hanging beam lifting appliance assembly is arranged below the hoisting trolley frame, the hoisting trolley frame comprises a bridge frame, two hoisting mechanisms are symmetrically arranged on the upper surface of the bridge frame, and a lifting hook assembly is installed below the hoisting mechanisms. The suspended beam lifting appliance assembly comprises a plate-shaped upper suspended beam and an I-shaped lower suspended beam which are arranged up and down, an electric rotating assembly is installed between the upper suspended beam and the lower suspended beam, a plurality of magnetic attraction mechanisms which are linearly arranged are arranged below the lower suspended beam, and connecting mechanisms with the same number as the magnetic attraction mechanisms are installed on the lower suspended beam. And supporting mechanisms for supporting the suspended beam lifting appliance assembly are symmetrically arranged on the lower surface of the lower suspended beam. According to the lower hanging beam, the hanging ring can be limited, so that the hanging ring cannot be separated in the rotating operation process of the lower hanging beam.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a lower rotating suspended beam bridge crane. Background Technology

[0002] A rotating electromagnetic girder bridge crane uses a trolley mounted on the main beam to lift heavy objects. The upper ends of the outriggers are connected to the main beam, and the lower ends are connected to the traveling mechanism. Driven by a motor mounted on the traveling mechanism, the crane moves along the rails. Simultaneously, the trolley can also travel on the main beam, ultimately moving heavy objects from one location to another. In existing technology, when installing electromagnetic chucks, the lifting rings are directly hooked onto hooks on both sides of the girder. During lifting operations, when the lower girder rotates, the connection between the lifting rings and the girder may become unstable, causing the lifting rings to detach from the hooks and affecting construction safety.

[0003] According to the search, the utility model patent document with announcement number CN203439896U discloses a four-chain safety type special rotary crane for threaded steel bars. It consists of a double hook hook (1), a chain lifting device (2), a hanging beam (3), and a disk lifting device (4). This design adds an electromagnetic rotary lifting device to the original hook crane, adds electronic and electrical components, changes the way the trolley wire rope is lowered, and adopts a unique four-chain double hook connection method, which effectively solves the problem of rotational rebound.

[0004] The aforementioned rotating crane is connected by a suspension method using lifting rings and hooks, which makes it difficult to guarantee the safety of the operation. Utility Model Content

[0005] The purpose of this invention is to provide a lower rotating beam bridge crane that can restrict the lifting rings so that they do not detach during the rotation of the lower beam.

[0006] The present invention adopts the following technical solution:

[0007] The lower rotating girder bridge crane includes a lifting trolley frame and a girder lifting device assembly. The girder lifting device assembly is located below the lifting trolley frame. The lifting trolley frame includes a bridge frame, on the upper surface of which two lifting mechanisms are symmetrically arranged. A hook assembly is installed below the lifting mechanisms. The girder lifting device assembly includes an upper plate-shaped hanging beam and an I-shaped lower hanging beam arranged vertically. An electric rotating component is installed between the upper and lower hanging beams. Several magnetic attraction mechanisms are arranged linearly below the lower hanging beam. The lower hanging beam has the same number of connecting mechanisms as the magnetic attraction mechanisms. Support mechanisms for supporting the girder lifting device assembly are symmetrically arranged on the lower surface of the lower hanging beam.

[0008] Optionally, the connecting mechanism includes a support plate, a screw, and symmetrically arranged C-shaped connectors. The support plate is positioned above the lower hanging beam, and the two vertical members of the C-shaped connectors penetrate the surface of the horizontal plate below the lower hanging beam and slide together.

[0009] Optionally, guide shafts are symmetrically fixed on the lower surface of the support plate. The guide shafts pass through the surface of the horizontal plate above the lower beam and slide together. Limiting rings are symmetrically fixed on the circumferential surface below the guide shafts. Both limiting rings are located below the horizontal plate above the lower beam.

[0010] Optionally, a vertical connecting block is fixedly installed on the circumferential surface of the upper arc-shaped rod of the C-type connector, a guide shaft passes through the connecting block and rotates in cooperation, and two limiting rings are respectively installed on the upper and lower surfaces of the connecting block.

[0011] Optionally, the screw passes through the middle surface of the support plate and is threaded, with a bolt head on the upper end face of the screw and a circular rotating plate fixedly installed at the lower end of the screw.

[0012] Optionally, a groove is provided on the upper surface of the lower beam at a position corresponding to the rotating plate. The rotating plate is rotatably positioned in the groove, and a cover plate is provided above the rotating plate to seal the groove. The cover plate is fixed to the lower beam.

[0013] Optionally, a nut is threaded onto the vertical member below the notch of the C-type connector.

[0014] Optionally, the magnetic suction mechanism includes an electromagnetic chuck, on the upper surface of which are two sets of symmetrically arranged fixed seats. A lifting chain is installed above the fixed seats, and the upper ends of two adjacent lifting chains are connected to lifting rings, which are compatible with C-type connectors.

[0015] Optionally, the support mechanism includes a fixed plate and a support frame. The fixed plate is fixedly engaged with the lower hanging beam. A rotating block is fixedly installed on the upper end face of the support frame. Ear plates are symmetrically fixedly installed on the left side face of the fixed plate at positions corresponding to the rotating block. The ear plates are hinged to the rotating block.

[0016] Optionally, the rotating block has two bolt holes symmetrically opened on its side, and the fixed plate has two sets of bolt holes symmetrically opened on its side, which are adapted to the bolt holes. Bolts are installed in the internal threads of the bolt holes.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. In this utility model, after the C-shaped connector is lowered, the notch is located below the horizontal plate of the lower hanging beam. At this time, the lifting ring can be inserted through the notch. After the lifting ring is connected with the C-shaped connector, the screw is turned to raise the support plate, which in turn drives the C-shaped connector to rise, so that the notch returns to the upper surface of the horizontal plate below the lower hanging beam. At this time, the position of the C-shaped connector is fixed by the nut, and the installation and connection of the magnetic suction mechanism can be completed. The operation is simple and quick, and can effectively improve the safety during the rotation operation of the lower hanging beam.

[0019] 2. In this utility model, when it is necessary to install or disassemble the magnetic suction mechanism or connect and suspend the hanging beam assembly and the hook assembly, the support frame can be rotated 180° to make the support frame contact the ground, thereby supporting the lower hanging beam. At this time, the hanging beam is not subject to the lifting action of the hook assembly, the position of the lower hanging beam is stable and will not sway, ensuring the safety of the operators. Then, the support frame is fixed to the fixed plate with bolts, and the disassembly operation can be carried out. The process is safe and guaranteed. When entering the hoisting operation, the support frame can be rotated back to its original position to avoid the support frame affecting the hoisted items. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the magnetic attraction mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection mechanism of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the lower hanging beam of this utility model;

[0024] Figure 5 For the present utility model Figure 2 A sectional view;

[0025] Figure 6 In this utility model Figure 5 A magnified view of the details at point A;

[0026] Figure 7 This is a schematic diagram of the support mechanism of this utility model;

[0027] Figure 8 This is a schematic diagram of the support frame of this utility model after rotation.

[0028] In the diagram, 1. Cable tray; 2. Lifting mechanism; 21. Hook assembly; 3. Upper hanging beam; 4. Lifting lug; 5. Electric rotating assembly; 6. Lower hanging beam; 7. Magnetic suction mechanism; 8. Connecting mechanism; 9. Support mechanism; 61. Groove; 71. Electromagnetic chuck; 711. Fixed seat; 72. Lifting chain; 73. Lifting ring; 81. C-type connector; 811. Nut; 812. Connecting block; 82. Support plate; 83. Screw; 831. Rotating plate; 84. Guide shaft; 841. Limiting ring; 85. Cover plate; 91. Fixed plate; 911. Ear plate; 912. Bolt; 913. Bolt hole one; 92. Support frame; 93. Rotating block; 931. Bolt hole two. Detailed Implementation

[0029] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0030] Please see Figure 1-8 The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0031] like Figure 1-2 As shown, the lower rotating girder bridge crane includes a lifting trolley frame and a girder lifting device assembly. The girder lifting device assembly is located below the lifting trolley frame. The lifting trolley frame includes a bridge frame 1. Two lifting mechanisms 2 are symmetrically arranged on the upper surface of the bridge frame 1. A hook assembly 21 is installed below the lifting mechanism 2.

[0032] The beam lifting assembly includes an upper hanging beam 3 and an I-beam lower hanging beam 6 arranged vertically. An electric rotating assembly 5 is installed between the upper hanging beam 3 and the lower hanging beam 6 to enable the lower hanging beam 6 to be rotated and lifted.

[0033] Several magnetic suction mechanisms 7 arranged linearly are provided below the lower beam 6. The magnetic suction mechanism 7 includes an electromagnetic chuck 71. Two sets of symmetrically arranged fixed seats 711 are installed on the upper surface of the electromagnetic chuck 71. A hoisting chain 72 is installed above the fixed seat 711. A hoisting ring 73 is connected to the upper end of two adjacent hoisting chains 72.

[0034] The lower beam 6 is equipped with the same number of connecting mechanisms 8 as the magnetic attraction mechanism 7, and the magnetic attraction mechanism 7 is connected to the lower beam 6 through the connecting mechanisms 8;

[0035] The lower surface of the lower hanging beam 6 is symmetrically provided with support mechanisms 9, which support the lower hanging beam 6 and facilitate the disassembly and maintenance of the magnetic attraction mechanism 7.

[0036] The hoisting mechanism 2, hook assembly 21, electric rotating assembly 5 and electromagnetic chuck 71 in the above structure are existing technologies and will not be described in detail here.

[0037] like Figure 2-3As shown, in this embodiment, the connecting mechanism 8 includes a support plate 82, a screw 83, and symmetrically arranged C-shaped connectors 81. The support plate 82 is located above the lower hanging beam 6. The two vertical rods of the C-shaped connector 81 penetrate the surface of the horizontal plate below the lower hanging beam 6 and slide together. The C-shaped connector 81 is also compatible with the lifting ring 73.

[0038] Specifically, after the C-type connector 81 is lowered, the notch is located below the horizontal plate of the lower hanging beam 6. At this time, the lifting ring 73 can be inserted from the notch, so that the C-type connector 81 can suspend the lifting ring 73.

[0039] like Figure 2-3 As shown, in this embodiment, a guide shaft 84 is symmetrically fixed on the lower surface of the support plate 82. The guide shaft 84 passes through the surface of the horizontal plate above the lower hanging beam 6 and slides. Limiting rings 841 are symmetrically fixed on the circumferential surface below the guide shaft 84. Both limiting rings 841 are located below the horizontal plate above the lower hanging beam 6.

[0040] A vertical connecting block 812 is fixedly installed on the circumferential surface of the upper arc-shaped rod of the C-type connector 81. A guide shaft 84 passes through the connecting block 812 and rotates in cooperation with it. Two limit rings 841 are respectively installed on the upper and lower surfaces of the connecting block 812. The lifting and lowering movement of the guide shaft 84 drives the lifting and lowering movement of the C-type connector 81.

[0041] like Figure 2-4 As shown, in this utility model, the screw 83 passes through the middle of the support plate 82 and is threaded. The upper end face of the screw 83 is provided with a bolt head. By turning the bolt head with a wrench, the screw 83 is rotated, thereby driving the support plate 82 to move up and down.

[0042] A circular rotating plate 831 is fixedly installed at the lower end of the screw 83. A groove 61 is opened on the upper surface of the lower hanging beam 6 at a position corresponding to the rotating plate 831. The rotating plate 831 is rotatably installed in the groove 61. A cover plate 85 is provided above the rotating plate 831 to close the groove 61. The cover plate 85 is fixed to the lower hanging beam 6 by bolts to ensure the stability of the rotation of the screw 83.

[0043] like Figure 3 and Figure 6 As shown, in this embodiment, a nut 811 is threaded onto the vertical rod below the notch of the C-type connector 81.

[0044] Specifically, after the lifting ring 73 is connected to the C-type connector 81, the screw 83 is turned to raise the support plate 82, which in turn raises the C-type connector 81, so that the notch returns to the upper surface of the horizontal plate below the lower hanging beam 6. At this time, the position of the C-type connector 81 is fixed by the nut 811, and the installation and connection of the magnetic attraction mechanism 7 can be completed. The operation is simple and quick.

[0045] like Figure 7-8 As shown, in this utility model, the support mechanism 9 includes a fixed plate 91 and a support frame 92. The fixed plate 91 is fixedly connected to the lower hanging beam 6 by bolts. A rotating block 93 is fixedly installed on the upper end face of the support frame 92. A lug plate 911 is symmetrically fixed on the left side face of the fixed plate 91 at a position corresponding to the rotating block 93. The lug plate 911 and the rotating block 93 are hinged to facilitate the support frame 92 to rotate 180°.

[0046] like Figure 7-8 As shown, in this embodiment, in order to ensure that the support frame 92 can be stably supported after rotation, bolt holes 931 are symmetrically opened on the side of the rotating block 93, and two sets of bolt holes 913 are symmetrically opened on the side of the fixing plate 91 to match the bolt holes 93. Bolts 912 are provided with internal threads in the bolt holes 913.

[0047] Specifically, when it is necessary to install or disassemble the magnetic suction mechanism 7 or to connect and suspend the beam hanging device assembly with the hook assembly 21, the support frame 92 can be rotated 180° to make the support frame 92 contact the ground, thereby supporting the lower hanging beam 6. At this time, the beam hanging device is not subject to the lifting action of the hook assembly 21, and the position of the lower hanging beam 6 is stable and will not shake, ensuring the construction safety of the operators. At this time, the bolt holes 1 913 on the lower side of the fixed plate 91 and the bolt holes 2 931 on the side of the rotating block 93 are aligned. Then, the bolt 912 is screwed into the bolt holes 1 913 and the bolt holes 2 931 to fix the fixed plate 91 to the support frame 92.

[0048] When performing hoisting operations, the support frame 92 needs to be rotated back to its original position to avoid the support frame 92 affecting the hoisted items. After the support frame 92 is rotated, the bolt holes 913 on the upper side of the fixed plate 91 and the bolt holes 931 on the side of the rotating block 93 are aligned. Then, the bolts 912 are screwed into the bolt holes 913 and 931 to fix the fixed plate 91 and the support frame 92.

[0049] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0050] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0051] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A lower rotating suspended beam bridge crane, characterized in that: The system includes a lifting trolley frame and a beam lifting device assembly. The beam lifting device assembly is located below the lifting trolley frame. The lifting trolley frame includes a bridge frame, on which two lifting mechanisms are symmetrically arranged. A hook assembly is installed below each lifting mechanism. The beam lifting device assembly includes an upper plate-shaped beam and an I-shaped lower beam arranged vertically. An electric rotating assembly is installed between the upper and lower beams. Several magnetic attraction mechanisms are arranged linearly below the lower beam. The lower beam has the same number of connecting mechanisms as the magnetic attraction mechanisms. Support mechanisms for supporting the beam lifting device assembly are symmetrically arranged on the lower surface of the lower beam.

2. The lower rotating suspended beam bridge crane according to claim 1, characterized in that: The connecting mechanism includes a support plate, a screw, and symmetrically arranged C-shaped connectors. The support plate is positioned above the lower hanging beam, and the two vertical members of the C-shaped connectors penetrate the surface of the horizontal plate below the lower hanging beam and slide together.

3. The lower rotating suspended beam bridge crane according to claim 2, characterized in that: Guide shafts are symmetrically fixed on the lower surface of the support plate. The guide shafts pass through the surface of the horizontal plate above the lower beam and slide in fit. Limiting rings are symmetrically fixed on the circumferential surface below the guide shafts. Both limiting rings are located below the horizontal plate above the lower beam.

4. The lower rotating suspended beam bridge crane according to claim 3, characterized in that: A vertical connecting block is fixedly installed on the circumference of the upper arc-shaped rod of the C-type connector. The guide shaft passes through the connecting block and rotates with it. Two limit rings are respectively installed on the upper and lower surfaces of the connecting block.

5. The lower rotating suspended beam bridge crane according to claim 2, characterized in that: The screw passes through the middle surface of the support plate and is threaded. A bolt head is provided on the upper end face of the screw, and a circular rotating plate is fixedly provided on the lower end of the screw.

6. The lower rotating suspended beam bridge crane according to claim 5, characterized in that: A groove is provided on the upper surface of the lower beam at a position corresponding to the rotating plate. The rotating plate is rotatably positioned in the groove. A cover plate is provided above the rotating plate to seal the groove. The cover plate is fixed to the lower beam.

7. The lower rotating suspended beam bridge crane according to claim 2, characterized in that: A nut is threaded onto the vertical member below the notch of the C-type connector.

8. The lower rotating suspended beam bridge crane according to claim 2, characterized in that: The magnetic suction mechanism includes an electromagnetic chuck. Two sets of symmetrically arranged fixed seats are installed on the upper surface of the electromagnetic chuck. A lifting chain is installed above the fixed seats. Lifting rings are connected to the upper ends of the two adjacent lifting chains. The lifting rings are compatible with C-type connectors.

9. The lower rotating suspended beam bridge crane according to claim 1, characterized in that: The support mechanism includes a fixed plate and a support frame. The fixed plate is fixedly engaged with the lower hanging beam. A rotating block is fixedly installed on the upper end face of the support frame. Ear plates are symmetrically fixedly installed on the left side face of the fixed plate at positions corresponding to the rotating block. The ear plates are hinged to the rotating block.

10. The lower rotating suspended beam bridge crane according to claim 9, characterized in that: The rotating block has two bolt holes symmetrically opened on its side, and the fixed plate has two sets of bolt holes symmetrically opened on its side, which are adapted to the two bolt holes. Bolts are installed in the internal threads of the bolt holes.

Images