A special lifting tool for lifting steel beams for railway emergency repair.

Abstract

This utility model discloses a special lifting tool for railway emergency repair steel beam hoisting, relating to the field of bridge engineering technology. The utility model includes a base; lifting lugs are fixed on the base; limit plates are symmetrically slidably arranged on both sides of the lifting lugs at the top of the base; L-shaped plates are symmetrically fixed to the bottom surface of the limit plates; a fixed seat is fixed to the side of the L-shaped plate; a movable component is slidably arranged inside the fixed seat; a sliding cavity 8 is opened inside the fixed seat; the movable component includes a lifting rod, and a lifting ring that slides with the sliding cavity is fixed to the periphery of the lifting rod. This utility model, by setting up a movable component, allows the limit plates of the lifting tool to be adjusted according to different specifications of 64-beams, avoiding the problem of wire rope damage to 64-beam equipment and high safety hazards caused by wire rope hoisting. It also solves the problem of the limited range of applications for the lifting tool, effectively improving the stability and safety during 64-beam hoisting operations.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, and in particular relates to a special lifting tool for lifting steel beams for railway emergency repair. Background Technology

[0002] The Type 64 railway military bridge beam (referred to as the Type 64 beam) is a standard piece of equipment for emergency repair of railway bridges independently developed in my country. A full-span Type 64 beam is composed of multiple individual Type 64 beams in the transverse direction. During the assembly of the full-span Type 64 beam, the individual Type 64 beams are assembled first, and then the individual Type 64 beams are hoisted as a whole and connected together. After the full-span Type 64 beam is assembled and connected, it is erected and positioned as a whole.

[0003] Existing technologies for hoisting single sections of emergency repair steel bridges, as well as for the overall hoisting and erection of entire span emergency repair steel bridges, often select the standard triangular joint in the middle of the 64-beam as the hoisting point, using steel wire ropes to sling the beam from the outside in. However, this hoisting method is highly susceptible to wire rope cuts and damage to the 64-beam components, posing significant safety hazards. Furthermore, this sling-lifting method suffers from poor overall stability and makes erection and connection difficult. Therefore, we provide a special hoisting tool for railway emergency repair steel beams to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a special lifting tool for railway emergency repair steel beam hoisting. Through the specific structural design of the base, limiting plate, lifting lugs and moving components, it solves the problems in the above-mentioned background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a special lifting tool for railway emergency repair steel beam hoisting, including a base: a lifting lug is fixed on the base, a limit plate is symmetrically and slidably arranged on both sides of the lifting lug at the top of the base, an L-shaped plate is symmetrically fixed on the bottom surface of the limit plate, a fixed seat is fixed on the side of the L-shaped plate, and a moving component is slidably arranged inside the fixed seat.

[0006] The present invention is further configured such that the base has slide rails symmetrically fixed on its two opposite sides, which slide in cooperation with the corresponding L-shaped plates, and the side of the lifting lug has a trapezoidal rope hole.

[0007] The present invention is further configured such that a sliding cavity is provided inside the fixed base; the moving component includes a lifting rod, a lifting ring that slides with the sliding cavity is fixed on the periphery of the lifting rod, and a return spring sleeved on the lifting rod is fixedly connected between the bottom surface of the lifting ring and the bottom surface of the sliding cavity.

[0008] The present invention is further configured such that a stop block is fixedly connected to the bottom of the lifting rod, a guide rod is fixed to the inner wall of the sliding cavity, and a vertical guide groove is provided inside the lifting rod to slide with the guide rod.

[0009] The present invention is further configured such that an arc-shaped groove communicating with a vertical guide groove is provided inside the lifting rod, and the arc-shaped groove slides in cooperation with the guide rod.

[0010] The present invention is further configured such that the slide rail surface is provided with a plurality of positioning holes arranged in a linear array, and the positioning holes are inserted and engaged with the lifting rod.

[0011] The present invention is further configured such that a buffer rubber is fixedly connected to one side of the limiting plate, and anti-slip textures are provided inside the trapezoidal rope holes.

[0012] This utility model has the following beneficial effects: 1. By setting a moving component, when the lifting device is used to lift a 64 beam, the operator pulls the stop block and rotates it. The lifting rod disengages from the positioning hole under the action of the L-shaped groove and the guide rod. At this time, the limiting plate is moved to the appropriate position, and the stop block is rotated counterclockwise. The lifting rod enters the positioning hole under the action of the return spring to limit it, so as to realize the lifting of 64 beams of different sizes. This avoids the problem that the wire rope hoisting method is prone to damage to the 64 beam equipment and has high safety hazards. At the same time, it avoids the single use of the lifting device and effectively improves the stability and safety of the 64 beam lifting operation.

[0013] 2. This utility model sets the circular hole in the middle of the lifting lug as a trapezoidal rope hole. The guiding effect of the conical surface enables the wire rope to automatically center and effectively limits the lateral displacement of the wire rope, reducing swaying and making the lifting process more stable.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a special lifting tool for hoisting steel beams in railway emergency repairs.

[0017] Figure 2 This is a three-dimensional structural diagram of the limiting plate of this utility model.

[0018] Figure 3 This is a schematic diagram of the slide rail and positioning hole structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the limiting plate of this utility model.

[0020] Figure 5 This is an enlarged structural schematic diagram of the adjustment component of this utility model.

[0021] Figure 6 The circular hole shape is as described in this utility model.

[0022] Figure 7 This is a schematic diagram of the L-shaped groove of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 102. Limiting plate; 103. Lifting lug; 104. Trapezoidal rope hole; 3. Fixed seat; 4. Slide rail; 5. Buffer rubber; 6. Positioning hole; 7. Moving component; 701. Stop block; 702. Lifting rod; 703. Return spring; 704. Lifting ring; 705. Vertical guide groove; 706. Guide rod; 707. Arc groove; 8. Sliding cavity. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] For a specific implementation example, please refer to Implementation Example 1. Figures 1-7This utility model is a special lifting tool for railway emergency repair steel beam hoisting, including a base 1; specifically, a lifting lug 103 is fixed on the base 1, and a limit plate 102 is symmetrically and slidably arranged on both sides of the lifting lug 103 at the top of the base 1. An L-shaped plate 105 is symmetrically fixed on the bottom surface of the limit plate 102, and a fixed seat 3 is fixed on the side of the L-shaped plate 105. A moving component 7 is slidably arranged inside the fixed seat 3, and a sliding cavity 8 is opened inside the fixed seat 3; the moving component 7 includes a lifting rod 702, and a lifting ring 704 that slides and cooperates with the sliding cavity 8 is fixed on the periphery of the lifting rod 702. A sleeve on the lifting rod is fixedly connected between the bottom surface of the lifting ring 704 and the bottom surface of the sliding cavity 8. The return spring 703 on 702, the bottom of the lifting rod 702 is fixedly connected to the stop block 701, the inner wall of the sliding cavity 8 is fixed with the guide rod 706, the inside of the lifting rod 702 is provided with a vertical guide groove 705 that slides with the guide rod 706, the inside of the lifting rod 702 is provided with an arc groove 707 that communicates with the vertical guide groove 705, the arc groove 707 slides with the guide rod 706, the two opposite sides of the base 1 are symmetrically fixed with slide rails 4 that slide with the corresponding L-shaped plates 105, the surface of the slide rails 4 is provided with a number of positioning holes 6 distributed in a linear array, the positioning holes 6 are inserted with the lifting rod 702, and a buffer rubber 5 is fixedly connected to one side of the limiting plate 102.

[0027] The operation process of this embodiment is as follows: In the initial state of the lifting device, the lifting rod 702 is inserted into the positioning hole 6, and the limiting plate 102 cannot move at this time. When it is necessary to move the limiting plate 102, the stop block 701 is pulled first. The stop block 701 drives the lifting rod 702 and the lifting ring 704 to slide along the inner wall of the sliding cavity 8. The return spring 703 sleeved outside the lifting rod 702 is compressed by the lifting ring 704 and generates elastic potential energy. When the guide rod 706 in the sliding cavity 8 enters the turning point between the vertical guide groove 705 and the arc groove 707, the stop block 701 is rotated. The stop block 701 drives the lifting rod 702 to rotate. At this time, the guide rod 706 enters the interior of the arc groove 707 and is limited by the arc groove 707. The lifting rod 702 retracts and disengages from the positioning hole 6. The limiting plate 102 can move. When the limiting plate 102 moves to the appropriate position, the stop block 701 rotates in the opposite direction. The stop block 701 drives the lifting rod 702 to rotate counterclockwise. The guide rod 706 in the sliding cavity 8 enters the junction of the arc groove 707 and the vertical guide groove 705. At this time, the guide rod 706 is released from the restriction of the arc groove 707. The elastic potential energy of the return spring 703 is released, which drives the lifting ring 704 and the lifting rod 702 to slide up along the sliding cavity 8 and enter the positioning hole 6 of the slide rail 4 to engage. This completes the movement restriction of the limiting plate 102. Through the above steps, the adjustment of the lifting device is completed so as to lift six-four beams of different sizes. This effectively solves the problem of the single use of the lifting device in actual use and has the characteristics of high stability and safety and easy erection.

[0028] For a specific embodiment two, please refer to Figure 6 Based on the first specific embodiment, specifically, the side of the lifting lug 103 is provided with a trapezoidal rope hole 104, and the inside of the trapezoidal rope hole 104 is provided with anti-slip texture.

[0029] The operation process of this embodiment is as follows: by setting the circular hole 104 in the middle of the lifting lug 103 as a trapezoidal rope hole, and with one end of the circular surface being larger than the other end, it is convenient for the wire rope to pass through the hole. The guiding effect of the trapezoidal conical surface can enable the wire rope to automatically center itself and effectively limit the lateral displacement of the wire rope, reduce swaying, and make the hoisting process more stable.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A special lifting device for lifting a railway repair steel beam, comprising a base (1); characterized in that: The base (1) is fixed with a lifting lug (103). The top of the base (1) is symmetrically and slidably provided with a limiting plate (102) on both sides of the lifting lug (103). The bottom surface of the limiting plate (102) is symmetrically fixed with an L-shaped plate (105). The side of the L-shaped plate (105) is fixed with a fixing seat (3). The inside of the fixing seat (3) is slidably provided with a moving component (7).

2. The special lifting device for lifting a railway repair steel beam according to claim 1, characterized in that, The base (1) has slide rails (4) that are symmetrically fixed on two opposite sides and slide in cooperation with the corresponding L-shaped plate (105). The side of the lifting lug (103) has a trapezoidal rope hole (104).

3. The special lifting device for lifting a railway repair steel beam according to claim 1, characterized in that, The fixed base (3) has a sliding cavity (8) inside; the moving component (7) includes a lifting rod (702), and a lifting ring (704) that slides with the sliding cavity (8) is fixed on the periphery of the lifting rod (702). A return spring (703) sleeved on the lifting rod (702) is fixedly connected between the bottom surface of the lifting ring (704) and the bottom surface of the sliding cavity (8).

4. The special lifting device for lifting a railway repair steel beam according to claim 3, characterized in that, The bottom of the lifting rod (702) is fixedly connected to a stop block (701), the inner wall of the sliding cavity (8) is fixed with a guide rod (706), and the inside of the lifting rod (702) is provided with a vertical guide groove (705) that slides with the guide rod (706).

5. The special lifting device for lifting a railway repair steel beam according to claim 3, characterized in that, The lifting rod (702) has an arc-shaped groove (707) inside that communicates with the vertical guide groove (705), and the arc-shaped groove (707) slides with the guide rod (706).

6. The special lifting device for lifting a railway repair steel beam according to claim 2, characterized in that, The slide rail (4) has a number of positioning holes (6) arranged in a linear array on its surface. The positioning holes (6) are inserted into the lifting rod (702).

7. The special lifting device for lifting a railway repair steel beam according to claim 2, characterized in that, A buffer rubber (5) is fixedly connected to one side of the limiting plate (102), and anti-slip textures are provided inside the trapezoidal rope hole (104).

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