A rotary stand for welding a circular weld

Abstract

The application relates to a rotating frame for assisting in welding of a ring-shaped weld, which comprises connecting rods, the ends of the connecting rods are provided with adjustable guide wheels, the number of the adjustable guide wheels is at least two, the distance between the two adjustable guide wheels is adjusted through a distance adjusting mechanism, and the connecting rods are provided with welding equipment. The number of the connecting rods is two, and the centers of the two connecting rods are connected into a whole through a center connecting piece. The application can solve the problem of difficult welding of a large reel structure and realizes the application of ordinary submerged arc automatic welding on a ring-shaped combined weld.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure manufacturing and installation technology, and specifically relates to an auxiliary rotating frame suitable for welding circumferential welds. Background Technology

[0002] The use of welded drum structures is very common in winch-type hoisting equipment in hydropower and water conservancy projects. For example, in a navigation facility project of a certain water conservancy hub, the nominal diameter of the drum's rope groove is 4600mm, the outer diameter of the drum is 4586mm, the inner diameter is 4336mm, and the length of the drum (including the brake disc) is approximately 6700mm. The rope groove pitch is 82mm, and the groove depth is 31mm. Its structure is made of rolled and welded steel plates. Due to the extremely thick plates, the welding workload is very large. After rolling, the straight and circumferential seams of the drum can be welded using roller frames and submerged arc welding. However, for the welding of the circumferential weld between the drum body and the drum hub, submerged arc welding cannot be achieved. Currently, shielded metal arc welding is still used, which has low welding efficiency, cannot guarantee internal quality, and is costly. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an auxiliary rotating frame suitable for welding circumferential welds, which can solve the problem of difficult welding of large drum structures and realize the application of ordinary submerged arc automatic welding on circumferential combined welds.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An auxiliary rotating frame suitable for welding circumferential welds includes a connecting rod, with adjustable guide wheels at the end of the connecting rod. The number of adjustable guide wheels is at least two, and the distance between the two adjustable guide wheels is adjusted by a distance adjustment mechanism. Welding equipment is mounted on the connecting rod.

[0006] Preferably, there are two connecting rods, and the centers of the two connecting rods are connected into a whole by a central connector.

[0007] Preferably, the adjustable guide wheel includes a traveling wheel, which is coaxially connected to the adjusting shaft and is used to fit against the inner wall of the drum hub.

[0008] Preferably, the spacing adjustment mechanism includes a strip-shaped hole at the end of the connecting rod, which is fixed to the adjustment shaft by a locking bolt.

[0009] Preferably, the end of the connecting rod is provided with a support guide wheel, which is used to contact the upper end face of the drum hub.

[0010] Preferably, the support guide wheel is located below the connecting rod, and the position of the support guide wheel is higher than that of the traveling wheel.

[0011] Preferably, the support guide wheel is connected to the support guide wheel adjusting screw, the support guide wheel adjusting screw is threadedly engaged with the internal threaded sleeve, and the internal threaded sleeve is connected to the connecting rod.

[0012] The present invention can achieve the following beneficial effects:

[0013] (1) This device enables the submerged arc automatic welding equipment to run along a circular trajectory, thereby realizing the submerged arc welding of irregular curves.

[0014] (2) It is suitable for welding curved welds on thick plates, which can improve the first-pass yield of welds. Automatic welding has good weld appearance and can fully guarantee the stability of weld quality.

[0015] (3) Significantly reduce labor costs. Submerged arc welding saves 40%-60% of welding time compared to shielded metal arc welding (the thicker the plate, the greater the value), and 20%-40% of welding time compared to CO2 gas shielded welding. This means that the demand for welders can be greatly reduced, welding efficiency can be improved, and costs can be reduced.

[0016] (4) Using submerged arc welding can greatly reduce the harm to welders during the welding process. Both shielded metal arc welding and CO2 gas shielded welding are manual welding methods, which produce fumes, toxic and harmful gases, and arc radiation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural diagram (top view) of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention (viewed from below);

[0020] Figure 3 This is the front view of the present utility model;

[0021] Figure 4 This is a side view of the effect of using this utility model;

[0022] Figure 5 This is a top view of the effect of using this utility model.

[0023] In the diagram: 1. Connecting rod; 2. Adjustable guide wheel; 201. Traveling wheel; 202. Adjusting shaft; 3. Central connecting piece; 4. Drum hub; 501. Strip hole; 502. Locking bolt; 6. Support guide wheel; 7. Support guide wheel adjusting screw; 8. Internal threaded sleeve; 9. Welding equipment; 10. Track seat plate; 11. Web plate; 12. Guide rail; 13. Weld to be welded; 14. Guide rail; 15. Drum body. Detailed Implementation

[0024] Preferred solutions include Figures 1 to 5 As shown, an auxiliary rotating frame suitable for circumferential weld welding includes a connecting rod 1. The end of the connecting rod 1 is provided with an adjustable guide wheel 2. There are at least two adjustable guide wheels 2, and the distance between the two guide wheels 2 is adjusted by a distance adjustment mechanism. Welding equipment is mounted on the connecting rod 1. Specifically, there are two connecting rods 1, and their centers are connected as a whole by a central connecting member 3. The adjustable guide wheel 2 includes a traveling wheel 201, which is coaxially connected to an adjusting shaft 202. The traveling wheel 201 is used to fit against the inner wall of the drum hub 4.

[0025] The spacing adjustment mechanism includes a strip hole 501 at the end of the connecting rod 1, and the strip hole 501 is fixed to the adjusting shaft 202 by a locking bolt 502.

[0026] The end of the connecting rod 1 is provided with a support guide wheel 6, which is used to contact the upper end surface of the drum hub 4.

[0027] The support guide wheel 6 is located below the connecting rod 1, and the position of the support guide wheel 6 is higher than that of the traveling wheel 201.

[0028] The support guide wheel 6 is connected to the support guide wheel adjusting screw 7, the support guide wheel adjusting screw 7 is threadedly engaged with the internal thread sleeve 8, and the internal thread sleeve 8 is connected to the connecting rod 1.

[0029] This device consists of two connecting rods, four sets of adjustable guide wheels, four sets of supporting guide wheels, and other components. A three-dimensional structural diagram of this device is shown below. Figure 1 As shown.

[0030] The device is placed inside a cylindrical body (i.e., drum hub 4), and its diameter is adjusted using adjustable guide wheels. It can be applied to structures with different circular diameters. Then, the locking bolts 502 on the connecting rod and adjusting shaft 202 are locked, thus forming the basic frame. The supporting guide wheels 6 help the device rotate smoothly structurally and serve a guiding function. The submerged arc welding equipment is then connected to this fixture. When the submerged arc welding carriage moves, it will run in a circular path, thus achieving circumferential weld welding. The working state of this device is as follows... Figure 2 As shown.

[0031] The operating principle of this device is:

[0032] Before welding, adjust the distance between the wire feeding mechanism and the weld area by adjusting the horizontally movable column and cross arm. Connect the welding equipment to this device.

[0033] During welding, the motor driving the drive wheel is turned on via the control box (here, the equipment refers to the drive motor, which is mainly responsible for the movement of the welding carriage of the traveling mechanism and the power transmission for auxiliary functions. It belongs to the fixed accessories of the equipment). The drive wheel of the welding carriage is arranged on the upper part of the guide rail, which propels the entire submerged arc welding machine along the circular track. The front guide wheel is guided and adjusted along the flexible track to complete the welding of the circular weld.

[0034] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An auxiliary rotating frame suitable for welding circumferential welds, characterized in that: It includes a connecting rod (1), and an adjustable guide wheel (2) is provided at the end of the connecting rod (1). The number of adjustable guide wheels (2) is at least two, and the distance between the two adjustable guide wheels (2) is adjusted by a distance adjustment mechanism. Welding equipment is installed on the connecting rod (1).

2. The auxiliary rotating frame for circumferential weld welding according to claim 1, characterized in that: There are two connecting rods (1), and the two connecting rods (1) are connected as a whole by the center connector (3).

3. An auxiliary rotating frame suitable for circumferential weld welding according to claim 2, characterized in that: The adjustable guide wheel (2) includes a traveling wheel (201), which is coaxially connected to the adjusting shaft (202). The traveling wheel (201) is used to fit against the inner wall of the drum hub (4).

4. An auxiliary rotating frame suitable for circumferential weld welding according to claim 3, characterized in that: The spacing adjustment mechanism includes a strip hole (501) at the end of the connecting rod (1), and the strip hole (501) is fixed to the adjusting shaft (202) by a locking bolt (502).

5. An auxiliary rotating frame suitable for circumferential weld welding according to claim 4, characterized in that: The end of the connecting rod (1) is provided with a support guide wheel (6), which is used to contact the upper surface of the drum hub (4).

6. An auxiliary rotating frame suitable for circumferential weld welding according to claim 5, characterized in that: The support guide wheel (6) is located below the connecting rod (1), and the position of the support guide wheel (6) is higher than that of the traveling wheel (201).

7. An auxiliary rotating frame suitable for circumferential weld welding according to claim 1, characterized in that: The support guide wheel (6) is connected to the support guide wheel adjusting screw (7), the support guide wheel adjusting screw (7) is threadedly engaged with the internal thread sleeve (8), and the internal thread sleeve (8) is connected to the connecting rod (1).

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