Portable adjustable diameter hole cutting device and method for full position hole cutting of steel members

Abstract

The application relates to a portable adjustable-diameter hole opening device and method for full-position hole opening of a steel member, the device comprising a permanent magnet suction disc, a vertical plate, a horizontal supporting plate, a worm gear reducer, an input shaft, an output shaft, a hand crank, an adjusting plate, an adjusting locking bolt, a cutting torch seat and a jet suction type cutting torch; the method comprises the following steps: cleaning the surface of the steel structure to be opened and drawing a center line and a hole diameter line of the hole; adsorbing the permanent magnet suction disc on the surface of the steel structure, aligning the output shaft axis with the hole center; adjusting the radial position of the cutting torch seat on the adjusting plate and locking; connecting the oxygen and gas rubber pipes; starting the cutting torch and preheating; rotating the cutting torch around the output shaft at a constant speed by shaking the hand crank to complete the cutting. The application has the advantages of strong universality, adjustable hole diameter, high precision, good quality, no need of external power supply, portability, high efficiency and small damage to the steel structure.

Description

Technical Field

[0001] This invention relates to the field of steel structure manufacturing and construction technology, and in particular to a portable adjustable diameter opening device and method for opening holes in all positions of steel components. Background Technology

[0002] During the manufacturing and installation of steel structure projects, design changes or subsequent additions often necessitate the creation of circular openings in the existing steel structure facade to accommodate needs such as pipeline passage, ventilation and drainage, equipment installation, or later maintenance. Traditional methods for creating these openings primarily rely on handheld gas cutting, electric drills, or handheld plasma cutting. These methods have the following significant drawbacks: Poor spatial adaptability: Existing steel structures often have narrow internal spaces, and traditional equipment is large and inconvenient to operate, making it difficult to use in enclosed or semi-enclosed structures; Reliance on external energy: Electric drills, plasma cutters, etc., need to be connected to a power source and cannot be used in environments without electricity, such as bridge sites, high altitudes, or in the wild. Low hole-making accuracy: Manual gas cutting or hand-held electric drills can easily lead to problems such as hole position deviation, insufficient roundness, and uneven cuts, which affect the quality of subsequent component installation. Low safety: Sparks and metal chips generated during high-temperature cutting or high-speed drilling can easily cause safety accidents and require high skill levels from operators; Damage to the structure: Improper handling may damage the base material, affecting the overall strength and durability of the structure.

[0003] Therefore, there is an urgent need to develop a special device and method that is lightweight, efficient, adaptable, requires no external power supply, and can guarantee the quality of hole opening, in order to meet the ever-increasing requirements for precision, efficiency and safety in modern steel structure manufacturing. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a portable adjustable diameter opening device and method for opening holes in steel components in all positions, which has a reasonable structure, is easy to operate, has a wide range of applications, and does not require an external power source.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows: A portable adjustable diameter opening device for all-position opening of steel components includes a permanent magnet chuck, a vertical plate, a horizontal support plate, a worm gear reducer, an input shaft, an output shaft, a hand crank, an adjustment plate, an adjustment locking bolt, a torch holder, and a suction-type cutting torch. The lower end of the vertical plate is fixed to the permanent magnet chuck, which has an adsorption working plane. The upper end of the vertical plate is fixed to the horizontal support plate. A worm gear reducer is fixed on the horizontal support plate. The worm gear reducer has an input shaft and an output shaft. The axis of the output shaft is perpendicular to the adsorption working plane of the permanent magnet chuck. A drive gear is fixed on the input shaft, and a driven gear is fixed on the output shaft. The driven gear on the output shaft meshes with the drive gear on the input shaft. A hand crank is fixed at one end of the input shaft. An adjusting plate is fixed at one end of the output shaft. The axis of the output shaft is perpendicular to the plane of the adjusting plate. An oblong adjusting hole is provided on the adjusting plate. The length direction of the adjusting hole is perpendicular to the axis of the output shaft. The torch holder is fixed on the adjusting plate by inserting adjusting locking bolts into the adjusting hole. A jet-type torch is fixed on the torch holder. The jet-type torch has an oxygen connector and a gas connector. The nozzle axis of the jet-type torch is perpendicular to the adsorption working plane of the permanent magnet chuck.

[0006] Furthermore, the vertical plate is L-shaped, and there are at least two vertical plates. The lower end of the vertical plate is fixed to the permanent magnet chuck on the back of the adsorption working plane.

[0007] Furthermore, the plane of the adjustment plate is parallel to the adsorption working plane of the permanent magnet chuck.

[0008] A portable adjustable-diameter drilling method for all-position drilling of steel components, employing the aforementioned device, includes the following steps: S1: Clean the surface of the steel structure to be drilled, and accurately mark the center line and diameter line of the hole; S2: Attach the working plane of the permanent magnet chuck to the outer surface of the steel structure, so that the axis of the output shaft is aligned with the center of the pre-drawn hole. S3: Install the suction-type cutting torch onto the torch holder and secure it; S4: Loosen the adjusting locking bolt, move the torch holder along the length of the adjusting hole until the distance between the nozzle axis and the output shaft axis of the jet-suction torch is equal to the radius of the hole to be opened, tighten the adjusting locking bolt to fix the torch holder and the adjusting plate together. S5: Connect the oxygen hose and the gas hose to the oxygen connector and the gas connector on the jet-type cutting torch, respectively. S6: Turn on the suction-type cutting torch to preheat the part of the steel structure to be cut; S7: The operator cranks the hand crank at a constant speed to drive the torch holder and the suction torch to rotate 360° around the output shaft, completing the cutting of the circular hole.

[0009] Furthermore, in step S4, the distance between the nozzle axis and the output shaft axis of the suction torch can be infinitely adjusted to accommodate opening requirements of different diameters.

[0010] Furthermore, in step S7, the rotation speed of the hand crank is controlled at 5-10 revolutions per minute to ensure a smooth and uniform cutting surface.

[0011] The present invention has the following advantages: 1. High versatility and adjustable aperture: Through radial stepless adjustment, it can quickly adapt to the opening requirements of different diameters; 2. High precision and high quality: Mechanical transmission ensures accurate circular motion trajectory, and the openings are round and smooth; 3. No external power supply required: Purely mechanical structure, driven by human power, suitable for environments without a power source; 4. Operational safety: The device is securely fixed, the cutting process is smooth, and the safety is high; 5. Portable and efficient: The device can be disassembled into several modules, making it easy to transport and assemble; 6. Minimal damage to steel structure: Precise control of the cutting line avoids unnecessary damage to the steel structure. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention.

[0013] Figure 2 This is the left view of the present invention.

[0014] Figure 3 This is a top view of the present invention.

[0015] Figure 4 This is a perspective view of the present invention. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0017] like Figure 1-4 As shown, a portable adjustable diameter drilling device for drilling holes in all positions of steel components includes a permanent magnet chuck 1, a vertical plate 2, a horizontal support plate 3, a worm gear reducer 4, an input shaft 4.1, an output shaft 4.2, a hand crank 5, an adjustment plate 6, an adjustment locking bolt 7, a cutting torch seat 8, and a suction-type cutting torch 9.

[0018] The lower end of the vertical plate 2 is fixed to the permanent magnet chuck 1, which has an adsorption working plane. The upper end of the vertical plate 2 is fixed to the horizontal support plate 3. A worm gear reducer 4 is fixed on the horizontal support plate 3. The worm gear reducer 4 has an input shaft 4.1 and an output shaft 4.2. The axis of the output shaft 4.2 is perpendicular to the adsorption working plane of the permanent magnet chuck 1. A drive gear is fixed on the input shaft 4.1, and a driven gear is fixed on the output shaft 4.2. The driven gear on the output shaft 4.2 meshes with the drive gear on the input shaft 4.1. A hand crank 5 is fixed at one end of the input shaft 4.1.

[0019] An adjusting plate 6 is fixed to one end of the output shaft 4.2. The axis of the output shaft 4.2 is perpendicular to the plane of the adjusting plate 6. An oblong adjusting hole 6.1 is provided on the adjusting plate 6. The length direction of the adjusting hole 6.1 is perpendicular to the axis of the output shaft 4.2. The torch holder 8 is fixed on the adjusting plate 6 by inserting adjusting locking bolts 7 into the adjusting hole 6.1. A jet-type torch 9 is fixed on the torch holder 8. The jet-type torch 9 has an oxygen connector and a gas connector. The nozzle axis of the jet-type torch 9 is perpendicular to the adsorption working plane of the permanent magnet chuck 1.

[0020] The vertical plate 2 is L-shaped, and there are at least two vertical plates 2. The lower end of the vertical plate 2 is fixed to the permanent magnet chuck 1 on the back of the adsorption working plane.

[0021] The plane of the adjustment plate 6 is parallel to the adsorption working plane of the permanent magnet chuck 1.

[0022] In this invention, both the vertical plate 2 and the horizontal support plate 3 are made of Q355B steel plate with a thickness of 20-40mm, the output shaft 4.2 is made of 45 steel with heat treatment, and the adjusting plate 6 is made of Q355B steel plate with a thickness of 20-40mm.

[0023] A portable adjustable-diameter drilling method for all-position drilling of steel components includes the following steps: S1: Clean the surface of the steel structure 10 to be drilled, and accurately mark the center line and diameter line of the hole; S2: Attach the working plane of the permanent magnet chuck 1 to the outer surface of the steel structure 10, so that the axis of the output shaft 4.2 is aligned with the center of the pre-drawn hole. S3: Install the suction-type cutting torch 9 onto the torch holder 8 and secure it; S4: Loosen the adjusting locking bolt 7, move the torch holder 8 along the length of the adjusting hole 6.1 until the distance between the nozzle axis of the suction torch 9 and the axis of the output shaft 4.2 is equal to the radius of the hole to be opened, tighten the adjusting locking bolt 7 to fix the torch holder 8 and the adjusting plate 6 together. S5: Connect the oxygen hose and the gas hose to the oxygen connector and the gas connector on the suction torch 9, respectively. S6: Turn on the suction-type cutting torch 9 to preheat the part of the steel structure 10 to be cut; S7: The operator cranks the hand crank 5 at a constant speed, driving the torch holder 8 and the suction torch 9 to rotate 360° around the output shaft 4.2 together to complete the cutting of the circular hole.

[0024] Furthermore, in step S4, the distance between the nozzle axis of the suction torch 9 and the axis of the output shaft 4.2 can be infinitely adjusted to adapt to the opening requirements of different diameters.

[0025] Furthermore, in step S7, the rotation speed of the hand crank 5 is controlled at 5-10 revolutions per minute to ensure that the cut surface is smooth and uniform.

[0026] In this invention, the suction-type cutting torch 9 and the torch holder 8 can be disassembled, the torch holder 8 and the adjusting plate 6 can be disassembled, the adjusting plate 6 and the output shaft 4.2 can be disassembled, and the worm gear reducer 4 and the horizontal support plate 3 can be disassembled, which facilitates handling and assembly.

[0027] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A portable adjustable diameter drilling device for all-position drilling of steel components, characterized in that, Includes permanent magnet chuck (1), vertical plate (2), horizontal support plate (3), worm gear reducer (4), input shaft (4.1), output shaft (4.2), hand crank (5), adjusting plate (6), adjusting locking bolt (7), torch holder (8) and suction-type torch (9); The lower end of the vertical plate (2) is fixed to the permanent magnet chuck (1), which has an adsorption working plane. The upper end of the vertical plate (2) is fixed to the horizontal support plate (3). A worm gear reducer (4) is fixed on the horizontal support plate (3). The worm gear reducer (4) has an input shaft (4.1) and an output shaft (4.2). The axis of the output shaft (4.2) is perpendicular to the adsorption working plane of the permanent magnet chuck (1). A drive gear is fixed on the input shaft (4.1), and a driven gear is fixed on the output shaft (4.2). The driven gear on the output shaft (4.2) meshes with the drive gear on the input shaft (4.1). A hand crank (5) is fixed at one end of the input shaft (4.1). An adjusting plate (6) is fixed at one end of the output shaft (4.2). The axis of the output shaft (4.2) is perpendicular to the plane of the adjusting plate (6). An oblong adjusting hole (6.1) is provided on the adjusting plate (6). The length direction of the adjusting hole (6.1) is perpendicular to the axis of the output shaft (4.2). The torch holder (8) is fixed on the adjusting plate (6) by inserting adjusting locking bolts (7) into the adjusting hole (6.1). A jet-suction torch (9) is fixed on the torch holder (8). The jet-suction torch (9) has an oxygen connector and a gas connector. The nozzle axis of the jet-suction torch (9) is perpendicular to the adsorption working plane of the permanent magnet chuck (1). The vertical plate (2) is L-shaped, and there are at least two vertical plates (2). The lower end of the vertical plate (2) is fixed on the permanent magnet chuck (1) on the back of the adsorption working plane. The plane of the adjustment plate (6) is parallel to the adsorption working plane of the permanent magnet chuck (1).

2. A portable adjustable-diameter drilling method for all-position drilling of steel components, characterized in that, The apparatus as described in claim 1 includes the following steps: S1: Clean the surface of the steel structure (10) to be drilled, and accurately mark the center line and diameter line of the hole; S2: Adsorb the working plane of the permanent magnet chuck (1) onto the outer surface of the steel structure (10) so that the axis of the output shaft (4.2) is aligned with the center of the pre-drawn hole; S3: Install the suction-type cutting torch (9) onto the torch holder (8) and fix it in place; S4: Loosen the adjusting locking bolt (7), move the torch holder (8) along the length direction of the adjusting hole (6.1) until the distance between the nozzle axis of the suction torch (9) and the axis of the output shaft (4.2) is equal to the radius of the hole to be opened, tighten the adjusting locking bolt (7) to fix the torch holder (8) and the adjusting plate (6) together; S5: Connect the oxygen hose and the gas hose to the oxygen connector and the gas connector on the suction torch (9), respectively. S6: Turn on the suction torch (9) to preheat the part of the steel structure (10) to be cut; S7: The operator cranks the hand crank (5) at a constant speed to drive the torch holder (8) and the suction torch (9) to rotate 360° around the output shaft (4.2) to complete the cutting of the circular hole.

3. The method according to claim 2, characterized in that, In step S4, the distance between the nozzle axis of the suction torch (9) and the axis of the output shaft (4.2) can be infinitely adjusted to adapt to the opening requirements of different diameters.

4. The method according to claim 2, characterized in that, In step S7, the rotation speed of the hand crank (5) is controlled at 5-10 revolutions per minute to ensure that the cutting surface is smooth and uniform.

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