Box girder lifting appliance

Abstract

The utility model discloses a box girder lifting appliance which comprises an adjusting assembly, the adjusting assembly comprises a fixing column, an adjusting plate, a bottom plate and a connecting block, the adjusting plate is arranged at the bottom of the fixing column, the bottom plate is arranged below the adjusting plate, the connecting block is fixed on the upper surface of the bottom plate, the connecting block is of a U-shaped design, and a notch of the connecting block is located under the adjusting plate. The clamping assemblies are arranged on the two sides of the adjusting assembly. Each clamping assembly comprises a clamping block, a movable rod, a movable block, a rotating rod and a fastening block. According to the utility model, the design of the existing hook is changed into clamping hoisting, the adjusting plate is controlled to move up and down through the fixing rod, the clamping state of the clamping block connected with the adjusting plate is adjusted, and the pin shaft and the stop lever are arranged at the moving position of the adjusting plate for limiting, so that the clamping is stable; the clamping blocks are arranged on the box girder, the fastening blocks are arranged on the clamping blocks to fasten the clamped box girder, the clamping firmness of the clamping blocks is improved, more uniform force distribution is provided, and better adaptability is achieved.

Description

Technical Field

[0001] The utility model relates to, but is not limited to, the technical field of box girder hoisting, and in particular to a box girder hoisting sling. Background Art

[0002] A box girder is a common structural form for long-span bridges. It consists of a fully welded top plate, bottom plate, web, transverse diaphragms, longitudinal diaphragms, and stiffening ribs. Hoisting a box girder requires the use of a lifting device. These devices typically consist of accessories such as chains, rings, hooks, and slings, and are widely used in the lifting and hoisting industry.

[0003] For example, Chinese patent publication No. CN220976261U describes a steel box girder hoisting device that uses only a simple motor, drum, and hook to hoist box girders of varying weights. This poses a safety hazard. Uneven weight on the box girder or exceeding the hook's load capacity can cause the hook to fall off or become damaged, leading to accidents. Therefore, a box girder hoisting device with improved load-bearing performance is being designed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a box beam lifting device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a box girder lifting sling, comprising an adjustment assembly, wherein the adjustment assembly comprises a fixed column, an adjustment plate, a bottom plate and a connecting block, wherein the adjustment plate is arranged at the bottom of the fixed column, the bottom plate is arranged below the adjustment plate, and the connecting block is fixed to the upper surface of the bottom plate, the connecting block is U-shaped, and the notch of the connecting block is located directly below the adjustment plate;

[0007] A clamping assembly, wherein the clamping assembly is arranged on both sides of the adjusting assembly, and the clamping assembly includes a clamping block, a movable rod, a movable block, a rotating rod and a fastening block. The clamping block is arranged on the left and right sides of the base plate, the movable rod is arranged at the upper end of the clamping block, the movable block is arranged at the upper end of the movable rod, the rotating rod passes through one side of the clamping block, and the fastening block is arranged at one end of the rotating rod.

[0008] As an optimal technical solution of the present invention, the bottom end of the fixed column is connected to the adjusting plate with a screw, the upper end of the fixed column is fixed with a hanging ring, a movable screw is provided between the adjusting plate and the connecting block, and a movable groove A for the movable screw to move is opened inside the connecting block.

[0009] As an optimal technical solution of the present invention, the adjustment plate and the connecting block are movably connected through the movable screw and the movable groove A. A pin shaft is horizontally passed through the connecting block and the movable screw. One end of the pin shaft is designed to be protruding, and a gear rod is vertically passed through the other end. The gear rod is U-shaped.

[0010] As an optimal technical solution of the present invention, the bottom end of the movable rod is screwed to the clamping block, a notch is provided at the other end of the movable rod, the upper end of the movable rod is movably connected to the adjustment plate through the notch, and a movable groove B is provided on the surface of the adjustment plate for the movable block to move.

[0011] As an optimal technical solution of the present invention, the movable block is screw-connected to the movable rod, the movable rod is tilted, a fixed frame is provided between the movable rod and the bottom plate, and the movable rod is rotatably connected to the fixed frame.

[0012] As an optimal technical solution of the present invention, the clamping block is U-shaped, a control rod is provided at the outer end of the rotating rod, the control rod is fixedly connected to the rotating rod, and the rotating rod is threadedly matched with the clamping block and the fastening block.

[0013] As a preferred technical solution of the present invention, the fastening block is designed in a suction cup shape and is made of rubber.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model changes the existing hook design and is set to be clamped and hoisted. The adjustment plate is controlled to move up and down by a fixed rod to adjust the clamping state of the clamping block connected thereto, and a pin shaft and a shift rod are set at the moving position of the adjustment plate to limit the position, so as to clamp firmly. A fastening block is set on the clamping block to fasten the clamped box beam, thereby improving the firmness of the clamping block, providing more uniform force distribution and better adaptability, and solving the problem of safety hazards in using a simple motor, reel and hook to hoist a box beam of non-fixed weight. The uneven weight of the box beam or exceeding the load-bearing capacity of the hook will cause the hook to fall off or be damaged, thereby causing a safety accident.

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of part A of the overall structural diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the planar structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the utility model for hoisting the box girder;

[0023] Figure 5 This is a schematic diagram of the structure of the utility model for replacing clamping blocks of different sizes;

[0024] In the figure: 100, adjustment assembly; 101, fixed column; 102, adjustment plate; 103, bottom plate; 104, connecting block; 105, fixing frame; 106, movable screw; 107, movable slot A; 108, pin; 109, gear lever; 1010, lifting ring; 200, clamping assembly; 201, clamping block; 202, movable rod; 203, movable block; 204, movable slot B; 205, rotating rod; 206, control lever; 207, fastening block. DETAILED DESCRIPTION

[0025] like Figure 1-4 As shown, the utility model provides a box girder lifting sling, including an adjustment assembly 100, which includes a fixed column 101, an adjustment plate 102, a bottom plate 103 and a connecting block 104. The adjusting plate 102 is arranged at the bottom of the fixed column 101, the bottom plate 103 is arranged below the adjusting plate 102, and the connecting block 104 is fixed to the upper surface of the bottom plate 103. The connecting block 104 is U-shaped, and the notch of the connecting block 104 is located directly below the adjusting plate 102.

[0026] The clamping assembly 200 is arranged on both sides of the adjustment assembly 100. The clamping assembly 200 includes a clamping block 201, a movable rod 202, a movable block 203, a rotating rod 205 and a fastening block 207. The clamping block 201 is arranged on the left and right sides of the base plate 103, the movable rod 202 is arranged at the upper end of the clamping block 201, the movable block 203 is arranged at the upper end of the movable rod 202, the rotating rod 205 passes through one side of the clamping block 201, and the fastening block 207 is arranged at one end of the rotating rod 205.

[0027] Furthermore, in this embodiment, the bottom end of the fixed column 101 is screwed to the adjustment plate 102, a lifting ring 1010 is fixed to the upper end of the fixed column 101, a movable screw 106 is provided between the adjustment plate 102 and the connecting block 104, and a movable groove A 107 for the movable screw 106 to move is provided inside the connecting block 104. Based on the design of the connecting block 104, the adjustment plate 102 is inserted into the groove of the connecting block 104 and moves up and down in the groove. The movable groove A 107 cooperates with the movable screw 106 on the adjustment plate 102 to guide the movement of the adjustment plate 102 and limit the movement range.

[0028] In this embodiment, the adjustment plate 102 and the connecting block 104 are movably connected by a movable screw 106 and a movable groove A 107. A pin shaft 108 is horizontally passed through the connecting block 104 and the movable screw 106. One end of the pin shaft 108 is designed to be protruding, and a shift rod 109 is vertically passed through the other end. The shift rod 109 is designed to be U-shaped. The pin passes through the movable screw 106 and the connecting block 104 to limit the position of the movable screw 106 in the movable groove A 107, and the shift rod 109 is used to block one end of the pin shaft 108 to prevent the pin shaft 108 from falling off, so that the position of the adjustment plate 102 is more stable after the position is determined.

[0029] In this embodiment, the bottom end of the movable rod 202 is screwed to the clamping block 201, and a notch is provided at the other end of the movable rod 202. The upper end of the movable rod 202 is movably connected to the adjustment plate 102 through the notch. A movable groove B204 for the movable block 203 to move is provided on the surface of the adjustment plate 102. The upper end of the movable rod 202 is inserted into both sides of the adjustment plate 102 through the notch, providing space for the movable rod 202 to move outside the adjustment plate 102, and the movement of the movable rod 202 on the adjustment plate 102 is limited by the movable groove B204.

[0030] In this embodiment, the movable block 203 is connected to the movable rod 202 by screws. The movable rod 202 is designed to be inclined. A fixed frame 105 is provided between the movable rod 202 and the base plate 103. The movable rod 202 is rotatably connected to the fixed frame 105. The screws are used to facilitate the installation of the movable block 203 for fixing after the movable rod 202 is inserted outside the adjustment plate 102, and the movement of the movable rod 202 is stabilized by the fixed frame 105.

[0031] In this embodiment, the clamping block 201 is U-shaped, and a control rod 206 is provided at the outer end of the rotating rod 205. The control rod 206 is fixedly connected to the rotating rod 205. The rotating rod 205 is threadedly matched with the clamping block 201 and the fastening block 207. The design of the clamping block 201 facilitates clamping of the box beam, and the control rod 206 controls the rotating rod 205 to rotate inside the clamping block 201.

[0032] In this embodiment, the fastening block 207 is designed in a suction cup shape and is made of rubber. The design of the fastening block 207 enables it to better rest against the outer side of the box beam, thereby improving the clamping firmness of the clamping block 201.

[0033] Specifically, before the box girder needs to be hoisted, a hoist is needed to connect the box girder to the hoisting equipment. The clamping block 201 is in an open state when not in use, and the hoist is clamped on the left and right sides of the box girder. The bottom plate 103 contacts the upper surface of the box girder, and then the fixed column 101 is lifted. The rise of the fixed column 101 drives the adjustment plate 102 to rise synchronously. The movable screw 106 on the adjustment plate 102 moves in the movable groove A 107 on the connecting block 104. The movable block 203 at the upper end of the movable rod 202 moves from the upper end of the movable groove B 204 to the lower end. The angle between the movable rod 202 and the bottom plate 103 is reduced, driving the clamping block 201 to tighten inward to clamp the box girder. When the angle between the movable rod 202 and the bottom plate 103 changes, the movable rod 202 rotates on the inner side of the fixed frame 105 through the screws, and moves stably.

[0034] Considering the firmness of the clamping, after the clamping block 201 completes the clamping work on the box beam, the shaft pin is passed through the movable screw 106 and the connecting block 104, and the stop rod 109 is passed through the pin shaft 108, blocking it on one side of the connecting block 104 to prevent the pin shaft 108 from falling off, making the clamping of the clamping block 201 more firm;

[0035] After the clamping block 201 clamps and fixes the box beam, the control rod 205 is controlled to rotate inside the clamping block 201 through the control rod 206, and the rotating rod 205 is moved inward based on the thread control until the fastening blocks 207 at the ends of the rotating rod 205 are against both sides of the box beam, thereby fastening the box beam and improving the firmness of the sling clamping the box beam.

[0036] In addition, considering the applicability of the spreader, refer to Figure 5 The size of the parts of the sling is adapted to the box girder that needs to be hoisted. For example, when the height of the box girder does not match the original clamping block 201, the clamping block 201 is removed and a clamping block 201 adapted to its height is installed. Due to the different sizes of the box girder, there is a situation where the bottom plate 103 does not contact the upper surface of the box girder.

[0037] The components of the utility model, such as the fixed column 101, the adjustment plate 102, the base plate 103, the connecting block 104, the fixed frame 105, the movable screw 106, the pin 108, the gear lever 109, the lifting ring 1010, the clamping block 201, the movable rod 202, the movable block 203, the rotating rod 205, the control lever 206, and the fastening block 207, are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0038] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A box girder hoisting sling, characterized in that: The invention comprises an adjustment component (100), wherein the adjustment component (100) comprises a fixing column (101), an adjustment plate (102), a bottom plate (103) and a connection block (104), wherein the adjustment plate (102) is arranged at the bottom of the fixing column (101), the bottom plate (103) is arranged below the adjustment plate (102), the connection block (104) is fixed on the upper surface of the bottom plate (103), the connection block (104) is U-shaped, and the notch of the connection block (104) is located directly below the adjustment plate (102); A clamping assembly (200), wherein the clamping assembly (200) is arranged on both sides of the adjusting assembly (100), and the clamping assembly (200) comprises a clamping block (201), a movable rod (202), a movable block (203), a rotating rod (205) and a fastening block (207); the clamping block (201) is arranged on the left and right sides of the bottom plate (103), the movable rod (202) is arranged at the upper end of the clamping block (201), the movable block (203) is arranged at the upper end of the movable rod (202), the rotating rod (205) passes through one side of the clamping block (201), and the fastening block (207) is arranged at one end of the rotating rod (205).

2. A box girder hoisting sling according to claim 1, characterized in that: The bottom end of the fixing column (101) is screw-connected to the adjusting plate (102); a lifting ring (1010) is fixed to the top end of the fixing column (101); a movable screw (106) is arranged between the adjusting plate (102) and the connecting block (104); and a movable groove A (107) for the movable screw (106) to move is provided inside the connecting block (104).

3. A box girder hoisting sling according to claim 2, characterized in that: The adjusting plate (102) and the connecting block (104) are movably connected via the movable screw (106) and the movable groove A (107); a pin shaft (108) is horizontally passed through the connecting block (104) and the movable screw (106); one end of the pin shaft (108) is protruding, and a shift rod (109) is vertically passed through the other end; and the shift rod (109) is U-shaped.

4. A box girder hoisting sling according to claim 1, characterized in that: The bottom end of the movable rod (202) is screwed to the clamping block (201), the other end of the movable rod (202) is provided with a notch, the upper end of the movable rod (202) is movably connected to the adjustment plate (102) through the notch, and the surface of the adjustment plate (102) is provided with a movable groove B (204) for the movable block (203) to move.

5. A box girder hoisting sling according to claim 4, characterized in that: The movable block (203) is screw-connected to the movable rod (202); the movable rod (202) is designed to be inclined; a fixing frame (105) is provided between the movable rod (202) and the bottom plate (103); the movable rod (202) is rotatably connected to the fixing frame (105).

6. A box girder hoisting sling according to claim 1, characterized in that: The clamping block (201) is of U-shaped design. A control rod (206) is provided at the outer end of the rotating rod (205). The control rod (206) is fixedly connected to the rotating rod (205). The rotating rod (205) is threadedly matched with the clamping block (201) and the fastening block (207).

7. A box girder hoisting sling according to claim 6, characterized in that: The fastening block (207) is designed in the shape of a suction cup and is made of rubber material.

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