Steel plate arc cutting electromagnetic gauge

Abstract

The utility model relates to the technical field of cutting equipment, in particular to a steel plate arc cutting electromagnetic gauge which comprises an electromagnetic base, a positioning device is arranged in the center of the bottom end of the electromagnetic base, a rotating seat is arranged in the center of the top of the electromagnetic base, and a threaded pipe is installed in the rotating seat. A second limiting nut and a third limiting nut are installed on the threaded pipe, a U-shaped ruler is clamped between the second limiting nut and the third limiting nut, a clamping device is arranged at the end, with an opening, of the ruler, a fourth limiting nut is installed at the top end of the threaded pipe, and an anti-falling pipe is arranged at the top end of the fourth limiting nut. The threaded pipe and the anti-falling pipe are each internally provided with two wires, the two wires are connected through a butt joint, and the bottom ends of the wires in the threaded pipe are electrically connected with the electromagnetic base. The device is effectively prevented from being broken after cutting is completed, and the cut steel plate can be rapidly taken down.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, in particular to an electromagnetic gauge for arc cutting of steel plates. Background Art

[0002] In the daily processing of steel structures, it is often necessary to cut circular holes on structural parts. Manual cutting results in non-standard and unsightly shapes, and some structural parts are inconvenient to cut using CNC equipment. For example, the steel arch frame used in tunnel projects requires circular holes to be cut on its web to facilitate the construction of advance small ducts. The cutting operation using CNC equipment on the web of the steel arch frame is cumbersome and inefficient.

[0003] Existing Chinese patent publication number CN216939088U discloses a magnetic gauge for circular arc cutting of steel plates. The gauge comprises a positioning disc positioned at the center of the steel plate to be cut, a hollow cylinder with threads on its inner wall at the center of the upper surface of the positioning disc; a threaded central screw threadedly connected to the positioning disc through the hollow cylinder on the positioning disc; a torch scale comprising a strip with a positioning slot at one end and a circular ring for placing the torch tip at the other end. A first nut and a second nut are positioned above and below the positioning slot, respectively, and the central screw passes through the first nut, the positioning slot, and the second nut in sequence; and an angle pointer comprising a circular ring positioned between the torch scale and the second nut and a pointer fixed to the circular ring and pointing to the positioning disc. This utility model has a simple structure and is easy to operate, improving both cutting accuracy and operational efficiency.

[0004] However, in the above patent, after the steel structure is cut, the cutting magnetic gauge will fall along with the cut circular steel plate, and there is a risk of the cutting magnetic gauge being broken. In addition, because the positioning disk of the cutting magnetic gauge is magnetic, it will always be firmly adsorbed to the cut circular steel plate. The operator is also required to manually separate the cutting magnetic gauge from the circular steel plate, which increases the labor intensity of the operator. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an electromagnetic gauge for circular arc cutting of steel plates. By fixing the anti-fall tube away from the end of the threaded tube on other stable steel structures or equipment, the operator can avoid having to hold the device with his hands, avoid burns on the circular steel plate after being cut, and reduce the labor intensity of the operator. The circular steel plate adsorbed on the bottom end of the electromagnetic base will lose its magnetism and fall off from the electromagnetic base after the power supply is disconnected from the current supplied to the electromagnetic base.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A steel plate arc cutting electromagnetic gauge includes an electromagnetic base, a positioning device is provided at the center of the bottom end of the electromagnetic base, a rotating seat is provided at the center of the top of the electromagnetic base, a threaded tube is installed in the rotating seat, a second limiting nut and a third limiting nut are installed on the threaded tube, a U-shaped ruler is clamped between the second limiting nut and the third limiting nut, the ruler has an open end provided with a clamping device, a fourth limiting nut is installed at the top end of the threaded tube, an anti-fall tube is provided at the top end of the fourth limiting nut, two sections of wires are respectively provided in the threaded tube and the anti-fall tube, the two sections of wires are connected by a docking joint, and the bottom end of the wire in the threaded tube is electrically connected to the electromagnetic base.

[0008] Preferably, a telescopic hole is provided at the center of the bottom end of the electromagnetic base, and the positioning device includes a positioning cone installed in the telescopic hole, and an elastic member is connected to the top end of the positioning cone and the top end of the telescopic hole.

[0009] Preferably, a limiting ring is provided on the outer edge of the bottom end of the threaded tube, a limiting hole adapted to the limiting ring is provided in the rotating seat, and a first limiting nut matched with the top of the rotating seat is installed at the lower end of the threaded tube.

[0010] Preferably, the clamping device includes a U-shaped mounting frame, which is arranged at the end of the ruler, and a bidirectional screw is provided on the mounting frame. Both ends of the bidirectional screw are respectively installed with threaded blocks adapted thereto, and a splint is provided on the side of the threaded block away from the mounting frame, and a knob for driving the bidirectional screw is provided at the end of the mounting frame.

[0011] Preferably, the surface of the ruler is provided with scale lines, and the scale lines are groove-shaped structures.

[0012] Preferably, the anti-fall tube has toughness, the fourth limiting nut is provided with a handle, the end of the anti-fall tube away from the fourth limiting nut is provided with a hanging plate, and the hanging plate is provided with a through hole.

[0013] Preferably, the surfaces of the first limiting nut, the second limiting nut, the third limiting nut and the clamping plate are all provided with an anti-slip and wear-resistant layer.

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

[0015] 1. The utility model has a simple structure. By fixing the end of the anti-fall tube away from the threaded tube to other stable steel structures or equipment, the operator can avoid using his hands to hold the device, avoid being burned by the cut circular steel plate, and reduce the labor intensity of the operator. The circular steel plate adsorbed on the bottom end of the electromagnetic base will lose its magnetism and fall off from the electromagnetic base after the power supply is disconnected and the current supplied to the electromagnetic base is cut off.

[0016] 2. The positioning cone of the device has a sharp end, and the sharp end of the positioning cone is set toward the outside of the telescopic hole. An elastic part is connected between the positioning cone and the top of the telescopic hole, so that when the positioning cone is aligned with the calibrated center of the circle, the electromagnetic base is magnetic by passing current through the electromagnetic base. When it is adsorbed to the steel plate, the positioning cone can be retracted into the telescopic hole. When the electromagnetic base has no magnetism, the positioning cone extends out of the telescopic hole under the action of the elastic part, which facilitates positioning by the positioning cone and ensures the accuracy of the cutting of the device.

[0017] 3. When the first limit nut of the device approaches the rotating seat and abuts against the upper end of the rotating seat, it can restrict the threaded pipe to ensure that the threaded pipe does not rotate in the rotating seat, making it easier for the operator to stabilize the device and install the cutting gun on the clamping device, as well as adjust the working height of the cutting gun and the cutting radius of the device.

[0018] 4. This device can drive the bidirectional screw to rotate forward or reverse by turning the knob, so as to drive the two threaded blocks on the bidirectional screw to move closer to or away from each other. Since both threaded blocks are provided with clamping plates, when the two threaded blocks drive the two clamping plates closer to each other, the cutting gun can be clamped and fixed. When the two threaded blocks drive the two clamping plates away from each other, the fixation of the cutting gun can be loosened. Since the thickness of the steel plates to be cut may vary, the types of cutting guns used may also vary. The above-mentioned clamping device can clamp and fix different types of cutting guns, thereby improving the practicality of this device.

[0019] 5. The anti-fall tube of this device can be bent at will. When the electromagnetic base is adsorbed on the steel plate, it can completely prevent the tube from falling. Ensure that the anti-fall tube has one end of the hanging plate, which is fixed to other stable steel structures or equipment through the hanging plate. The through hole on the hanging plate can provide a fixed position. When the ruler needs to be removed, the fourth limit nut can be removed from the top of the threaded tube by turning the handle. The anti-fall tube and the wire inside it are taken out at the same time, which is convenient for taking out the ruler for replacement, etc., thereby improving the practicality of this device; when cutting the steel plate, the operator can also control the rotation of the threaded tube in the rotating seat by the handle to control the cutting efficiency of the cutting gun, which is convenient for the operator to control the cutting gun to effectively cut the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 for Figure 2 A magnified view of the local structure.

[0023] In the figure: 1. Electromagnetic base; 2. Telescopic hole; 3. Elastic part; 4. Positioning cone; 5. Rotating seat; 6. First limiting nut; 7. Threaded tube; 8. Second limiting nut; 9. Third limiting nut; 10. Ruler; 11. Mounting frame; 12. Bidirectional screw; 13. Knob; 14. Threaded block; 15. Clamp; 16. Fourth limiting nut; 17. Handle; 18. Anti-fall tube; 19. Wire; 20. Hanging plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] An electromagnetic gauge for arc cutting of steel plates, the structure of which is as follows Figure 1-Figure 3 As shown, it includes an electromagnetic base 1, a positioning device is provided at the center of the bottom end of the electromagnetic base 1, a rotating base 5 is provided at the center of the top of the electromagnetic base 1, a threaded tube 7 is installed in the rotating base 5, a second limiting nut 8 and a third limiting nut 9 are installed on the threaded tube 7, a U-shaped scale 10 is clamped between the second limiting nut 8 and the third limiting nut 9, the scale 10 has an open end and is provided with a clamping device, a fourth limiting nut 16 is installed at the top end of the threaded tube 7, an anti-fall tube 18 is provided at the top end of the fourth limiting nut 16, two sections of wires 19 are respectively provided in the threaded tube 7 and the anti-fall tube 18, the two sections of the wires 19 are connected by a docking joint, and the bottom end of the wire 19 in the threaded tube 7 is electrically connected to the electromagnetic base 1.

[0027] The electromagnetic base 1 can be aligned with the center of the steel plate to be cut through the positioning device, and then the wire 19 can transmit the current of the power supply to the electromagnetic base 1. The electromagnetic base 1 generates a magnetic field when current is passed through the electromagnetic base 1, so that the electromagnetic base 1 generates magnetism, and the electromagnetic base 1 can be adsorbed on the steel plate. Then, the end of the anti-fall tube 18 away from the threaded tube 7 is fixed to other stable steel structures or equipment, and then the cutting gun is installed on the clamping device. The distance between the cutting gun and the steel plate is ensured by adjusting the second limit nut 8 and the third limit nut 9, so that the cutting gun can effectively cut the steel plate. While adjusting the second limit nut 8 and the third limit nut 9, the distance between the clamping device and the threaded tube 7 on the ruler 10 can be adjusted, so as to facilitate the control of the diameter of the circular steel plate cut by the cutting gun, and facilitate the control of the size of the circular steel plate to be cut according to actual needs;

[0028] When the cutting of the steel arch web used in the tunnel project is completed, the device will fall to the ground with the cut circular steel plate. Since the end of the anti-fall tube 18 away from the threaded tube 7 is fixed to other stable steel structures or equipment, the operator can avoid using his hands to support the device, avoid being burned by the cut circular steel plate, and reduce the labor intensity of the operator. The circular steel plate adsorbed on the bottom end of the electromagnetic base 1 will lose its magnetism after the power supply is disconnected from the current supplied to the electromagnetic base 1, and the circular steel plate will fall off the electromagnetic base 1, avoiding the operator from separating it from the electromagnetic base 1, reducing the labor intensity of the operator and improving work efficiency.

[0029] A telescopic hole 2 is provided at the center of the bottom end of the electromagnetic base 1 , and the positioning device includes a positioning cone 4 , which is installed in the telescopic hole 2 , and an elastic member 3 is connected to the top of the telescopic hole 2 .

[0030] The positioning cone 4 has a sharp end, and the sharp end of the positioning cone 4 is set toward the outside of the telescopic hole 2. An elastic member 3 is connected between the positioning cone 4 and the top of the telescopic hole 2, so that when the positioning cone 4 is aligned with the calibrated center of the circle, by passing current into the electromagnetic base 1, the electromagnetic base 1 becomes magnetic. When it is adsorbed to the steel plate, the positioning cone 4 can be retracted into the telescopic hole 2. When the electromagnetic base 1 has no magnetic properties, the positioning cone 4 extends out of the telescopic hole 2 under the action of the elastic member 3, which facilitates positioning by the positioning cone 4, thereby ensuring the accuracy of the device during cutting.

[0031] A limiting ring is provided on the outer edge of the bottom end of the threaded tube 7 , a limiting hole adapted to the limiting ring is provided in the rotating seat 5 , and a first limiting nut 6 matched with the top of the rotating seat 5 is installed at the lower end of the threaded tube 7 .

[0032] Through the cooperation between the limiting ring and the limiting hole, the threaded tube 7 can be ensured to rotate on the rotating seat 5. Since the lower end of the threaded tube 7 is provided with a first limiting nut 6, the first limiting nut 6 is located above the rotating seat 5. When the first limiting nut 6 is screwed, it can be driven to move closer to or away from the rotating seat 5. When the first limiting nut 6 approaches the rotating seat 5 and abuts against the upper end of the rotating seat 5, the threaded tube 7 can be restricted to ensure that the threaded tube 7 does not rotate in the rotating seat 5, which is convenient for the operator to stabilize the device and install the cutting gun on the clamping device, as well as adjust the working height of the cutting gun and the cutting radius of the device.

[0033] The clamping device includes a U-shaped mounting frame 11, which is arranged at the end of the scale 10. A bidirectional screw 12 is provided on the mounting frame 11. Both ends of the bidirectional screw 12 are respectively equipped with threaded blocks 14 adapted thereto. A clamping plate 15 is provided on the side of the threaded block 14 away from the mounting frame 11. A knob 13 for driving the bidirectional screw 12 is provided at the end of the mounting frame 11.

[0034] The operator can drive the bidirectional screw 12 to rotate forward or reverse by turning the knob 13, so as to drive the two threaded blocks 14 on the bidirectional screw 12 to move closer to or away from each other. Since the two threaded blocks 14 are provided with clamping plates 15, when the two threaded blocks 14 drive the two clamping plates 15 to move closer to each other, the cutting gun can be clamped and fixed. When the two threaded blocks 14 drive the two clamping plates 15 to move away from each other, the fixing of the cutting gun can be loosened.

[0035] Since the thickness of the steel plates to be cut may vary, the types of cutting guns used may also vary. The above-mentioned clamping device can clamp and fix cutting guns of different types, thereby improving the practicality of the device.

[0036] The surface of the ruler 10 is provided with scale lines, and the scale lines are groove-shaped structures.

[0037] By setting scale lines on the surface of the ruler 10, when the second limit nut 8 and the third limit nut 9 are adjusted to move away from each other, the ruler 10 can be loosened from the clamping state of the second limit nut 8 and the third limit nut 9, which is convenient for pulling the ruler 10 and controlling the cutting gun on the clamping device to approach or move away from the threaded tube 7. The distance between the cutting gun and the threaded tube 7 can be effectively observed through the set scale lines, which is convenient for adjusting the cutting radius of the device, and then the second limit nut 8 and the third limit nut 9 are adjusted to move closer to each other to clamp and fix the ruler 10. Since the side surfaces of the second limit nut 8 and the third limit nut 9 are in contact with the marked surface when clamping and fixing the ruler 10, the scale is prevented from being worn out to unclear after long-term use. Therefore, the scale is set to a groove-shaped structure to increase the service life of the device.

[0038] The surfaces of the first limiting nut 6 , the second limiting nut 8 , the third limiting nut 9 and the clamping plate 15 are all provided with an anti-slip and wear-resistant layer.

[0039] By providing an anti-skid and wear-resistant layer on the surface of the first limiting nut 6, the friction between it and the top of the rotating seat 5 can be increased, avoiding the first limiting nut 6 from being screwed hard to make it abut against the rotating seat 5, which causes the first limiting nut 6 to slip, thereby improving its service life. The anti-skid and wear-resistant layer is provided on the second limiting nut 8 and the third limiting nut 9, which can increase the friction with the scale 10, not only avoiding slipping like the first limiting nut 6, but also avoiding damage to the scale 10. The anti-skid and wear-resistant layer on the splint 15 can also increase the friction with the cutting gun, ensuring the stability of the cutting gun.

[0040] Example 2

[0041] On the basis of the first embodiment, the anti-falling tube 18 has toughness, the fourth limiting nut 16 is provided with a handle 17, the end of the anti-falling tube 18 away from the fourth limiting nut 16 is provided with a hanging plate 20, and the hanging plate 20 is provided with a through hole.

[0042] The anti-falling tube 18 can be bent at will. When the electromagnetic base 1 is adsorbed on the steel plate, the anti-falling tube 18 can be completely prevented from falling. Ensure that the anti-falling tube 18 has one end of the hanging plate 20, which is fixed to other stable steel structures or equipment through the hanging plate 20. The through hole on the hanging plate 20 can provide a fixed position. When it is necessary to remove the scale 10, the fourth limit nut 16 can be removed from the top of the threaded tube 7 by rotating the handle 17. The anti-falling tube 18 and the wire 19 inside it are taken out at the same time, which makes it easy to take out the scale 10 for replacement, etc., thereby improving the practicality of the device.

[0043] When cutting the steel plate, the operator can also control the rotation of the threaded tube 7 in the rotating seat 5 through the handle 17 to control the cutting efficiency of the cutting gun, which makes it easier for the operator to control the cutting gun to effectively cut the steel plate.

[0044] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes, additions, subtractions, or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An electromagnetic gauge for arc cutting of steel plates, comprising an electromagnetic base (1), characterized in that: A positioning device is provided at the center of the bottom end of the electromagnetic base (1), a rotating seat (5) is provided at the center of the top end of the electromagnetic base (1), a threaded tube (7) is installed in the rotating seat (5), a second limiting nut (8) and a third limiting nut (9) are installed on the threaded tube (7), a U-shaped scale (10) is clamped between the second limiting nut (8) and the third limiting nut (9), the scale (10) has an open end provided with a clamping device, a fourth limiting nut (16) is installed at the top end of the threaded tube (7), an anti-falling tube (18) is provided at the top end of the fourth limiting nut (16), two sections of wires (19) are respectively provided in the threaded tube (7) and the anti-falling tube (18), the two sections of the wires (19) are connected through a butt joint, and the bottom end of the wire (19) in the threaded tube (7) is electrically connected to the electromagnetic base (1).

2. The electromagnetic gauge for arc cutting of steel plates according to claim 1, characterized in that: A telescopic hole (2) is provided at the center of the bottom end of the electromagnetic base (1); the positioning device comprises a positioning cone (4); the positioning cone (4) is installed in the telescopic hole (2); and the top end of the positioning cone (4) is connected to the top end of the telescopic hole (2) by an elastic member (3).

3. The electromagnetic gauge for arc cutting of steel plates according to claim 1, characterized in that: A limiting ring is provided on the outer edge of the bottom end of the threaded tube (7), a limiting hole adapted to the limiting ring is provided in the rotating seat (5), and a first limiting nut (6) adapted to the top of the rotating seat (5) is installed at the lower end of the threaded tube (7).

4. The electromagnetic gauge for arc cutting of steel plates according to claim 3, characterized in that: The clamping device comprises a U-shaped mounting frame (11), the mounting frame (11) being arranged at the end of the scale (10), a bidirectional screw (12) being arranged on the mounting frame (11), threaded blocks (14) adapted thereto being respectively arranged at both ends of the bidirectional screw (12), a clamping plate (15) being arranged on the side of the threaded block (14) away from the mounting frame (11), and a knob (13) for driving the bidirectional screw (12) being arranged at the end of the mounting frame (11).

5. The electromagnetic gauge for circular arc cutting of steel plates according to claim 1, characterized in that: The surface of the ruler (10) is provided with scale lines, and the scale lines are groove-shaped structures.

6. The electromagnetic gauge for arc cutting of steel plates according to claim 1, characterized in that: The anti-falling tube (18) has toughness, the fourth limiting nut (16) is provided with a handle (17), the end of the anti-falling tube (18) away from the fourth limiting nut (16) is provided with a hanging plate (20), and the hanging plate (20) is provided with a through hole.

7. The electromagnetic gauge for circular arc cutting of steel plates according to claim 4, characterized in that: The surfaces of the first limiting nut (6), the second limiting nut (8), the third limiting nut (9) and the clamping plate (15) are all provided with an anti-slip and wear-resistant layer.

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