Novel lifting appliance for controlling gradient of lifting beam

Abstract

The utility model provides a novel lifting appliance for controlling the gradient of a lifting beam, which relates to the field of lifting appliances and comprises a carbon steel plate main body, first lug plates are symmetrically arranged at two ends of the carbon steel plate main body, first thrust bearings are mounted and connected on the two first lug plates, and second thrust bearings are mounted and connected on the two first lug plates. According to the novel lifting appliance for controlling the gradient of the lifting beam, the angle between the auxiliary carbon steel plate and the carbon steel plate main body is adjusted by starting the oil cylinder, so that the gradient between steel box beams can be conveniently and stably adjusted, and the novel lifting appliance can be suitable for lifting various steel box beams; after hoisting in place, the gradient is adjusted by utilizing the oil cylinder, so that the support and the padstone are effectively prevented from being damaged; the infrared distance meter is started to automatically measure the distance between the mounting plate and the alignment plate so as to accurately control the expansion and contraction amount of the oil cylinder, and therefore the situation that a beam plate is manually moved through a crowbar to form an accurate slope can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting tools, and in particular to a novel lifting tool for controlling the slope of a lifting beam. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because of their box-like shape. In long-span bridges, the main span of the steel box girder can reach hundreds or even thousands of meters. They are typically manufactured and installed in several segments, with a wide and flat cross-section and a height-to-width ratio of approximately 1:10. When hoisting bridge steel box girders, specialized lifting equipment is an indispensable tool, especially for the construction of bridges spanning rivers.

[0003] Furthermore, traditional hoisting methods often use cranes or heavy-duty cranes, which have limited lifting capabilities and cannot control the slope of the beam during placement. This necessitates adjustments during beam placement, and misalignment of the slope can damage the supports and bearing pads, posing certain safety hazards.

[0004] Therefore, it is necessary to provide a new type of lifting device for controlling the slope of the lifting beam to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a new type of lifting device for controlling the slope of the lifting beam.

[0006] This utility model provides a novel lifting device for controlling the slope of a hoisting beam, comprising: a carbon steel plate body, with first ear plates symmetrically arranged at both ends of the carbon steel plate body, two first ear plates, and a first thrust bearing installed on each of the two first ear plates; a main carbon steel plate located at the middle of the carbon steel plate body, and a secondary carbon steel plate located at the upper end of the main carbon steel plate; a steel strand installed at the top of the secondary carbon steel plate, and an anchor installed at the lower end of the steel strand; and a slope adjustment mechanism, comprising a second ear plate fixedly connected to one end of the carbon steel plate body, a connecting ear plate on the secondary carbon steel plate, and a hydraulic cylinder installed between the second ear plate and the connecting ear plate; a second thrust bearing installed on both the second ear plate and the connecting ear plate, one end of the hydraulic cylinder connected to the second thrust bearing on the second ear plate, and the telescopic end of the hydraulic cylinder connected to the second thrust bearing on the connecting ear plate.

[0007] Preferably, the hydraulic cylinder is provided with a measuring component, the measuring component includes a mounting plate, the mounting plate is fixedly connected to the telescopic end of the hydraulic cylinder, a fixed cylinder is fixedly connected to the mounting plate, an alignment plate is fixedly connected to one end of the hydraulic cylinder, and an infrared rangefinder is installed and connected in the fixed cylinder.

[0008] Preferably, the alignment plate is flush with the fixing cylinder.

[0009] Preferably, both first ear plates are connected to the carbon steel plate body with stiffening ribs.

[0010] Preferably, a connecting assembly is provided between the main carbon steel plate and the secondary carbon steel plate. The connecting assembly includes two third thrust bearings. One third thrust bearing is located between the main carbon steel plate and the carbon steel plate body, and the other third thrust bearing is located between the main carbon steel plate and the secondary carbon steel plate. Seamless steel pipes are installed and connected to both third thrust bearings.

[0011] Preferably, one end of the fixed cylinder has an external thread on its outer wall, and one end of the fixed cylinder is provided with a protective cap. A knob is rotatably connected to the protective cap, and a steel cable is connected to the knob. The other end of the steel cable is connected to the outer wall of the fixed cylinder.

[0012] Compared with related technologies, the novel lifting device for controlling the slope of lifting beams provided by this utility model has the following beneficial effects:

[0013] This utility model uses the activation of the hydraulic cylinder to push the connecting ear plate to move, thereby adjusting the angle between the secondary carbon steel plate and the main carbon steel plate. This allows for convenient and stable adjustment of the slope between the steel box girder and the main beam after positioning. It is applicable to various steel box girder hoisting applications, has strong adaptability, and is easy to construct.

[0014] This utility model saves costs by repeatedly connecting the new type of fixed lifting device to the steel box girder, making it reusable.

[0015] 3. This utility model can effectively prevent damage to the support and pad stone by using a hydraulic cylinder to adjust the slope after hoisting and positioning;

[0016] 4. This utility model automatically measures the distance between the mounting plate and the alignment plate by activating an infrared rangefinder, so as to accurately control the extension and retraction of the hydraulic cylinder. This allows for convenient and precise control of the slope between the steel box girder and the beam, avoiding the need to manually move the beam plate with a pry bar to form a precise slope, thus preventing safety accidents.

[0017] 4. This utility model protects the infrared rangefinder by placing it in a fixed cylinder and installing a protective cap, thus preventing damage when not in use. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure at point A.

[0020] Figure 3 for Figure 2 The diagram shows the structure at point B.

[0021] Numbered in the diagram: 1. Main carbon steel plate; 2. First ear plate; 21. First thrust bearing; 22. Stiffening rib; 3. Main carbon steel plate; 31. Secondary carbon steel plate; 4. Steel strand; 41. Anchor; 5. Second ear plate; 51. Hydraulic cylinder; 52. Connecting ear plate; 53. Second thrust bearing; 6. Mounting plate; 61. Fixing cylinder; 62. Alignment plate; 63. Infrared rangefinder; 7. Third thrust bearing; 71. Seamless steel pipe; 8. Protective cap; 81. Button; 82. Steel cable. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1 to 3 A novel lifting device for controlling the slope of a hoisting beam includes: a carbon steel plate body 1, with first ear plates 2 symmetrically arranged at both ends of the carbon steel plate body 1, two first ear plates 2, and a first thrust bearing 21 installed and connected to each of the two first ear plates 2; a main carbon steel plate 3 located at the middle of the carbon steel plate body 1; a secondary carbon steel plate 31 located at the upper end of the main carbon steel plate 3; a steel strand 4 installed and connected to the top of the secondary carbon steel plate 31; and an anchor 41 installed and connected to the lower end of the steel strand 4; the slope... The adjustment mechanism includes a second ear plate 5, which is fixedly connected to one end of the carbon steel plate body 1. A connecting ear plate 52 is provided on the secondary carbon steel plate 31. A hydraulic cylinder 51 is installed and connected between the second ear plate 5 and the connecting ear plate 52. A second thrust bearing 53 is installed and connected on both the second ear plate 5 and the connecting ear plate 52. One end of the hydraulic cylinder 51 is connected to the second thrust bearing 53 on the second ear plate 5, and the telescopic end of the hydraulic cylinder 51 is connected to the second thrust bearing 53 on the connecting ear plate 52.

[0024] In the specific implementation process, such as Figure 2 and Figure 3 As shown, the hydraulic cylinder 51 is equipped with a measuring component, which includes a mounting plate 6. The mounting plate 6 is fixedly connected to the telescopic end of the hydraulic cylinder 51. A fixed cylinder 61 is fixedly connected to the mounting plate 6. An alignment plate 62 is fixedly connected to one end of the hydraulic cylinder 51. An infrared rangefinder 63 is installed and connected in the fixed cylinder 61.

[0025] It should be noted that: starting the hydraulic cylinder 51 causes its telescopic end to push the connecting ear plate 52 to move accordingly, and adjusting the angle between the secondary carbon steel plate 31 and the carbon steel plate body 1, the steel box girder after being positioned can easily form a slope with the beam.

[0026] The infrared rangefinder 63 in the fixed cylinder 61 is activated to automatically measure the distance between the mounting plate 6 and the alignment plate 62, so as to accurately control the extension and retraction of the hydraulic cylinder 51, thereby conveniently and accurately controlling the slope formed between the steel box girder and the beam.

[0027] refer to Figure 1 and Figure 2 As shown, the alignment plate 62 is flush with the fixing cylinder 61.

[0028] It should be noted that the flush setting of the alignment plate 62 and the fixed cylinder 61 can accurately measure the extension and retraction of the hydraulic cylinder 51.

[0029] refer to Figure 1 As shown, both first ear plates 2 are connected to the carbon steel plate body 1 by stiffening ribs 22.

[0030] It should be noted that the stiffening ribs 22 can reinforce the connection between the two first ear plates 2 and the carbon steel plate body 1.

[0031] refer to Figure 1 As shown, a connecting assembly is provided between the main carbon steel plate 3 and the secondary carbon steel plate 31. The connecting assembly includes two third thrust bearings 7. One third thrust bearing 7 is located between the main carbon steel plate 3 and the carbon steel plate body 1, and the other third thrust bearing 7 is located between the main carbon steel plate 3 and the secondary carbon steel plate 31. Seamless steel pipes 71 are installed and connected to both third thrust bearings 7.

[0032] refer to Figure 1 and Figure 3 As shown, one end of the fixed cylinder 61 has an external thread on its outer wall, and one end of the fixed cylinder 61 is provided with a protective cap 8. A knob 81 is rotatably connected to the protective cap 8, and a steel cable 82 is connected to the knob 81. The other end of the steel cable 82 is connected to the outer wall of the fixed cylinder 61.

[0033] It should be noted that rotating the knob to install the protective cap 8 can protect the infrared rangefinder 63 in the fixed cylinder 61.

[0034] It should be noted that the first thrust bearing 21, the second thrust bearing 53, and the third thrust bearing 7 are all made of 40Cr steel and are used to withstand the local shear force of the lifting equipment and adjust the slope of the lifting beam.

[0035] The working principle of the new lifting device for controlling the slope of a hoisting beam provided by this utility model is as follows: The lifting device is installed on the hoisting equipment and connected to the sling. Then, the first thrust bearings 21 on the two first ear plates 2 at the lower end of the carbon steel plate body 1 are installed and connected to the beam. The steel strands 4 on the steel box girder are lifted, and the hydraulic cylinder 51 is activated so that its telescopic end pushes the connecting ear plate 52 to move accordingly. The angle between the auxiliary carbon steel plate 31 and the carbon steel plate body 1 is adjusted, so that the steel box girder after being positioned can easily form a slope with the beam. This can effectively solve the problems of difficulty in adjusting the slope of the precast beam and easy damage to the supports and pad stones. It can effectively save construction costs and time, improve the hoisting quality, and is also applicable to the hoisting of various steel box girders. It has strong adaptability and is convenient to construct.

[0036] Turn the knob to lower the protective cap 8, start the infrared rangefinder 63 in the fixed cylinder 61, automatically measure the distance between the mounting plate 6 and the alignment plate 62, so as to accurately control the extension and retraction of the hydraulic cylinder 51, thereby conveniently and accurately controlling the slope formed between the steel box girder and the beam.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A new type of lifting device for controlling the slope of a lifting beam, characterized in that: include: A carbon steel plate body (1), wherein first ear plates (2) are symmetrically provided at both ends of the carbon steel plate body (1), and the two first ear plates (2) are both installed and connected with a first thrust bearing (21), a main carbon steel plate (3) is provided at the middle position of the carbon steel plate body (1), a secondary carbon steel plate (31) is provided at the upper end position of the main carbon steel plate (3), a steel strand (4) is installed and connected at the top position of the secondary carbon steel plate (31), and an anchor (41) is installed and connected at the lower end of the steel strand (4); A slope adjustment mechanism, the slope adjustment mechanism comprising a second ear plate (5), the second ear plate (5) being fixedly connected to one end of the carbon steel plate main body (1), a connecting ear plate (52) being provided on the auxiliary carbon steel plate (31), an oil cylinder (51) being installed and connected between the second ear plate (5) and the connecting ear plate (52), a second thrust bearing (53) being installed and connected on both the second ear plate (5) and the connecting ear plate (52), one end of the oil cylinder (51) being connected to the second thrust bearing (53) on the second ear plate (5), and a telescopic end of the oil cylinder (51) being connected to the second thrust bearing (53) on the connecting ear plate (52); The oil cylinder (51) is provided with a measuring assembly, the measuring assembly comprising a mounting plate (6), the mounting plate (6) being fixedly connected to the telescopic end of the oil cylinder (51), a fixing cylinder (61) being fixedly connected to the mounting plate (6), an alignment plate (62) being fixedly connected to one end of the oil cylinder (51), and an infrared rangefinder (63) being installed and connected in the fixing cylinder (61).

2. A novel lifting device for controlling the slope of a lifting beam according to claim 1, characterized in that: The alignment plate (62) is arranged flush with the fixing cylinder (61).

3. A novel lifting device for controlling the slope of a lifting beam according to claim 1, characterized in that: Stiffening ribs (22) are installed and connected between the two first ear plates (2) and the carbon steel plate main body (1).

4. A novel lifting device for controlling the slope of a lifting beam according to claim 1, characterized in that: A connecting assembly is provided between the main carbon steel plate (3) and the secondary carbon steel plate (31), and the connecting assembly comprises two third thrust bearings (7), one of the third thrust bearings (7) is provided between the main carbon steel plate (3) and the carbon steel plate body (1), and the other third thrust bearing (7) is provided between the main carbon steel plate (3) and the secondary carbon steel plate (31), and both the third thrust bearings (7) are installed and connected with seamless steel pipes (71).

5. A novel lifting device for controlling the slope of a lifting beam according to claim 2, characterized in that: An external thread is formed on the outer wall of one end of the fixing tube (61). A protective cap (8) is provided at one end of the fixing tube (61). A knob (81) is rotatably connected to the protective cap (8). A steel cable (82) is connected to the knob (81). The other end of the steel cable (82) is connected to the outer wall of the fixing tube (61).

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