Auxiliary vertical pipe welding device in narrow and small space of pipe well and vertical pipe welding method

Abstract

The invention discloses a vertical pipe welding auxiliary device in a narrow and small space of a tube well and a vertical pipe welding method, and the vertical pipe welding auxiliary device comprises a base plate which is fixedly arranged at the bottom of the narrow and small space of the tube well; the supporting base is used for supporting the lower end of a vertical pipe and arranged above the base plate, and a connecting plug used for being detachably inserted into the lower end of the vertical pipe is formed on the supporting base; and the pivotal bearing is mounted between the supporting base and the base plate so as to enable the supporting base to rotate. The problems that vertical pipe welding in a narrow space of an air conditioner water pipe well is low in efficiency and uneven in welding seam are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a vertical pipe welding auxiliary device and a vertical pipe welding method in a narrow space of a pipe well. Background Art

[0002] In the mechanical and electrical installation project of a building, the risers in the air conditioning water pipe shaft are relatively large and the space is relatively narrow. Traditionally, the welding of the risers in the pipe shaft requires operators to work in a narrow space. In actual construction, small welding machines are generally used for pipe welding in narrow spaces, and construction workers use handheld welding guns to operate. This welding method has low welding efficiency, and welding on the wall side of the pipe is extremely inconvenient. There is also an uneven weld, which is easy to cause water leakage during water pressure testing in the later stage. Summary of the invention

[0003] In order to overcome the defects of the prior art, a riser welding auxiliary device and a riser welding method in the narrow space of a pipe shaft are provided to solve the problems of low efficiency and uneven welds in the riser welding in the narrow space of an air-conditioning water pipe shaft.

[0004] In order to achieve the above object, a standpipe welding auxiliary device in a narrow space of a pipe well is provided, comprising:

[0005] The base plate is fixed to the bottom of the narrow space of the pipe well;

[0006] A support base for supporting the lower end of the riser, disposed above the base plate, the support base being formed with a plug connector for detachably inserting the lower end of the riser;

[0007] A slewing bearing is installed between the support base and the base plate to enable the support base to slew.

[0008] Furthermore, the slewing bearing is a thrust ball bearing.

[0009] Furthermore, the plug connector includes:

[0010] A cross rigid plate is vertically arranged on the base plate;

[0011] A plurality of arc-shaped pressure plates are installed on the side of the cross stiffening plate and are arranged at intervals along the circumferential direction of the cross stiffening plate.

[0012] Furthermore, the arc-shaped pressure plate is installed on the cross rigid plate through a push jack, and the push jack is arranged along the radial direction of the slewing bearing.

[0013] Furthermore, the base plate is liftably mounted with an electric roller for driving the support base.

[0014] Furthermore, the substrate and the support base are circular and coaxially arranged.

[0015] The present invention provides a riser welding method using a riser welding auxiliary device in a narrow space of a pipe well, comprising the following steps:

[0016] The base plate of the vertical pipe welding auxiliary device in the narrow space of the pipe well is fixedly installed at the bottom of the narrow space of the pipe well;

[0017] Place the lower end of the lower section of the vertical pipe on a support base, and detachably insert the plug connector of the support base into the lower end of the vertical pipe;

[0018] Lift the upper riser to the upper end of the lower riser;

[0019] Temporarily fix the upper section riser to the upper end of the lower section riser;

[0020] The construction workers welded the joint seam on one side of the upper riser and the lower riser;

[0021] Rotate the support base so that the joint seam on the other side of the upper riser and the lower riser faces the construction worker;

[0022] Weld the joint seam on the other side of the upper riser and the lower riser.

[0023] The beneficial effects of the present invention are that the riser welding auxiliary device in the narrow space of the pipe shaft of the present invention is easy to assemble, can be used repeatedly, and the device can adapt to the rotation welding of risers of different diameters. The riser welding auxiliary device in the narrow space of the pipe shaft of the present invention is simple to operate, and can be used for riser welding operations in narrow spaces in different environments, greatly improving the efficiency of welding on the back of the riser. After the riser welding auxiliary device in the narrow space of the pipe shaft of the present invention is used to assist in rotating the riser, the welding surface eliminates welding dead angles and improves welding quality. The riser welding auxiliary device in the narrow space of the pipe shaft of the present invention optimizes the efficiency of interlaced construction of electromechanical installation and civil construction processes in a narrow space to avoid cross-influence. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 It is a schematic structural diagram of a standpipe welding auxiliary device in a narrow space of a pipe shaft according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic structural diagram of a support base according to an embodiment of the present invention.

[0027] Figure 3 It is a top view of the support base according to an embodiment of the present invention.

[0028] Figure 4 Schematic diagram of the structure of a slewing bearing according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Reference Figures 1 to 4 As shown, the present invention provides a vertical pipe welding auxiliary device in a narrow space of a pipe shaft, comprising: a base plate 1, a support base 2, and a slewing bearing 3.

[0032] In this embodiment, the substrate 1 is fixedly arranged at the bottom of the narrow space of the pipe well, and the size of the substrate is smaller than the inner diameter of the pipe well.

[0033] The support base 2 is arranged above the base plate 1. The support base 2 is used to support the lower end of the vertical pipe. The support base 2 is located directly above the base plate. The support base 2 is formed with a plug connector 21 for detachably inserting into the lower end of the vertical pipe.

[0034] As a preferred embodiment, the substrate 1 and the supporting base 2 are circular and coaxially arranged.

[0035] In this embodiment, the plug connector is coaxially arranged with the supporting base.

[0036] As a preferred implementation, the plug connector 21 includes a cross stiffness plate 211 and a plurality of arc-shaped pressure plates 212 .

[0037] The cross stiffening plate 211 is vertically arranged on the base plate 1. A plurality of arc-shaped pressing plates 212 are installed on the side of the cross stiffening plate 211. The plurality of arc-shaped pressing plates 212 are arranged at intervals along the circumferential direction of the cross stiffening plate 211.

[0038] In this embodiment, the cross stiffness plate includes two vertical plates arranged crosswise, and the arc-shaped pressure plates are installed on two opposite sides of the vertical plates.

[0039] As a preferred embodiment, the arc-shaped pressure plate 212 is installed on the cross stiffness plate 211 through a push jack. The push jack is arranged along the radial direction of the slewing bearing 3.

[0040] In this embodiment, the slewing bearing 3 is installed between the supporting base 2 and the base plate 1 to enable the supporting base 2 to slew.

[0041] In this embodiment, the slewing bearing 3 is a thrust ball bearing.

[0042] As a preferred embodiment, the base plate 1 is movably mounted with an electric roller for driving the supporting base 2 .

[0043] The present invention provides a riser welding method using a riser welding auxiliary device in a narrow space of a pipe well, comprising the following steps:

[0044] S1. The base plate 1 of the vertical pipe welding auxiliary device in the narrow space of the pipe well is fixedly installed at the bottom of the narrow space of the pipe well.

[0045] S2. Place the lower end of the lower section of the vertical pipe on the support base 2, and detachably insert the plug connector 21 of the support base 2 into the lower end of the vertical pipe.

[0046] S3. Lift the upper section of the riser to the upper end of the lower section of the riser.

[0047] S4. Temporarily fix the upper section of the riser to the upper end of the lower section of the riser.

[0048] S5. Construction workers weld the joint seam on one side of the upper riser and the lower riser.

[0049] S6. Rotate the support base 2 so that the joint seam on the other side of the upper riser and the lower riser faces the construction workers.

[0050] S7. Weld the joint seam between the upper riser and the other side of the lower riser.

[0051] In addition, when implementing steps S5 and S7, the vertical pipe is slowly rotated by controlling the rotation speed of the electric roller. By rotating the vertical pipe, the joint seam or weld seam of the vertical pipe is always on the outside of the wall, that is, the side facing the construction workers.

[0052] The auxiliary device for welding a vertical pipe in a narrow space of a pipe well of the present invention places a support base at the bottom of the vertical pipe. When the height of the vertical pipe reaches a corresponding height, the vertical vertical pipe is connected to the support base, so that the vertical vertical pipe can achieve a rotation effect. At the same time, the construction personnel can use a welding robot to temporarily fix the corresponding weld height position, and perform welding operations on the weld position by rotating the vertical vertical pipe, thereby achieving a uniform weld effect on the vertical pipe.

[0053] The vertical pipe welding auxiliary device in the narrow space of the pipe well of the present invention is composed of two parts: one is the slewing bearing of the device; the other is the limited rotation support base of the device.

[0054] The main function of the slewing bearing is to rotate the entire vertical pipe. The function of the support base is to prevent the horizontal displacement of the vertical pipe to ensure safety. The support base plus the slewing bearing are the supporting parts of the entire device.

[0055] The slewing bearing adopts thrust ball bearing, which consists of 12 steel solid bearing balls with a diameter of Φ61mm, seat rings and shaft rings. The upper seat ring of the bearing is connected to the support base by a processing shaft ring clamp.

[0056] The standpipe welding auxiliary device in the narrow space of the pipe well of the present invention is easy to assemble and can be used repeatedly. The device can be adapted to the rotary welding of standpipes with different pipe diameters.

[0057] The standpipe welding auxiliary device in the narrow space of a pipe well of the present invention is easy to operate, can be applied to standpipe welding operations in narrow spaces of different environments, and greatly improves the standpipe back welding efficiency.

[0058] The standpipe welding auxiliary device in the narrow space of the pipe well of the present invention is used to assist in rotating the standpipe, thereby eliminating welding dead angles on the welding surface and improving welding quality.

[0059] The standpipe welding auxiliary device in the narrow space of the pipe well of the present invention optimizes the construction efficiency of the interlaced processes of electromechanical installation and civil construction in the narrow space and avoids cross-influence.

[0060] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A vertical pipe welding auxiliary device in a narrow space of a pipe well, characterized in that: include: The base plate is fixed to the bottom of the narrow space of the pipe well; A support base for supporting the lower end of the riser, disposed above the base plate, the support base being formed with a plug connector for detachably inserting the lower end of the riser; A slewing bearing is installed between the support base and the base plate to enable the support base to slew.

2. The auxiliary device for welding a vertical pipe in a narrow space of a pipe well according to claim 1, characterized in that: The slewing bearing is a thrust ball bearing.

3. The auxiliary device for welding a vertical pipe in a narrow space of a pipe well according to claim 1, characterized in that: The plug connector comprises: A cross rigid plate is vertically arranged on the base plate; A plurality of arc-shaped pressure plates are installed on the side of the cross stiffening plate and are arranged at intervals along the circumferential direction of the cross stiffening plate.

4. The auxiliary device for welding a vertical pipe in a narrow space of a pipe well according to claim 3, characterized in that: The arc-shaped pressure plate is installed on the cross rigid plate through a push jack, and the push jack is arranged along the radial direction of the slewing bearing.

5. The auxiliary device for welding a vertical pipe in a narrow space of a pipe well according to claim 1, characterized in that: The base plate is liftably mounted with an electric roller for driving the supporting base.

6. The auxiliary device for welding a vertical pipe in a narrow space of a pipe well according to claim 1, characterized in that: The substrate and the supporting base are circular and coaxially arranged.

7. A method for welding a riser pipe using the auxiliary device for welding a riser pipe in a narrow space of a pipe well as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: The base plate of the vertical pipe welding auxiliary device in the narrow space of the pipe well is fixedly installed at the bottom of the narrow space of the pipe well; Place the lower end of the lower section of the vertical pipe on a support base, and detachably insert the plug connector of the support base into the lower end of the vertical pipe; Lift the upper riser to the upper end of the lower riser; Temporarily fix the upper section riser to the upper end of the lower section riser; The construction workers welded the joint seam on one side of the upper riser and the lower riser; Rotate the support base so that the joint seam on the other side of the upper riser and the lower riser faces the construction worker; Weld the joint seam on the other side of the upper riser and the lower riser.

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