Supporting device facilitating welding of large-span flue

Abstract

The utility model provides a supporting device convenient for welding of a large-span flue, which relates to the technical field of supporting equipment and comprises a movable base, self-locking universal wheels distributed in a rectangular array are fixedly mounted on the lower surface of the movable base, a storage sleeve is fixedly connected to the upper surface of the movable base, and a limiting column is fixedly connected to the inner bottom wall of the storage sleeve. The outer surface of the limiting column is movably sleeved with a hollow screw rod, one end of the hollow screw rod penetrates through and extends to the upper surface of the storage sleeve, the convenient lifting device achieves lifting adjustment through single-person operation, the convenience of height adjustment is improved, the smoke pipe is automatically supported and limited, manual climbing operation is avoided, and the working efficiency is improved. And the smoke pipe is elastically limited, so that the smoke pipe is prevented from greatly shaking when being influenced by external wind power during mounting and welding, and the effects of improving the concentricity, alignment efficiency and welding quality during welding of the smoke pipe are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting equipment, in particular to a supporting device which is convenient for welding a large-span flue. Background Art

[0002] In the exhaust gas treatment system of the steel plant, the flue support ensures the safe operation of the entire flue system, reduces failures and maintenance costs, and ensures the continuity and stability of production. Flue is usually made of metal or other materials and has a certain weight. Especially for long-span flues, its own weight is large. If there is no support, it may sag or even collapse due to gravity. For example, the long-distance flue of a large factory may be tens of meters or even hundreds of meters long. Its flue pipe is installed by segmented installation and welding. Each section of the connected flue pipe is welded and fixed in turn to achieve a long-span flue structure. Therefore, when the flue pipe is butt-jointed and welded, a support structure is needed to stably support the flue pipe to be welded.

[0003] For example, a support structure for a steelmaking converter flue disclosed in a Chinese patent document (Announcement No.: CN220432875U) drives two clamps to move up and down by setting a lifting structure, and drives the rotating shaft and the second bevel gear to rotate by turning the crank, and drives the threaded rod to rotate by means of the engagement of the first bevel gear and the second bevel gear, thereby driving the threaded sleeve, the connecting sleeve and the support plate to move up and down to achieve height adjustment of the two clamps, which is convenient for users to adjust the clamps according to the height of the steelmaking converter flue, and the rotating rod can be rotated by the anti-slip sleeve to adjust the position of the sleeve rod inside the sleeve, thereby adjusting the distance between the two lifting sleeves and the clamps, which is convenient for users to adjust the clamps according to the size of the flue, and effectively improves the applicability of the device.

[0004] However, each time the height is adjusted, two employees are required to rotate the crank handle synchronously, otherwise the lifting of the two lifting sleeves will deviate and get stuck, which makes the operation more cumbersome. In addition, when installing and welding some large-span flues, multiple sections of smoke pipes will be welded in sequence. The segmented smoke pipes to be welded are easily affected by external wind factors during support and docking, resulting in a large range of shaking, thereby affecting the quality and efficiency of welding adjacent smoke pipes.

[0005] Therefore, we propose a supporting device which is convenient for welding of large-span flue. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings existing in the prior art. At present, when the support device is adjusted in height, two employees are required to rotate the crank handle synchronously, otherwise the lifting of the two lifting sleeves will deviate and get stuck, which makes the operation more cumbersome. In addition, when installing and welding some large-span flues, multiple sections of flue pipes will be used for sequential welding. The segmented flues to be welded are easily affected by external wind force and other factors during support docking, resulting in a large range of jitters, thereby affecting the quality and efficiency of welding adjacent flue pipes.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A supporting device for large-span flue welding, comprising a movable base, the lower surface of the movable base is fixedly mounted with self-locking universal wheels distributed in a rectangular array, the upper surface of the movable base is fixedly connected with a storage sleeve, the inner bottom wall of the storage sleeve is fixedly connected with a limiting column, the outer surface of the limiting column is movably sleeved with a hollow screw, one end of the hollow screw penetrates and extends to the upper surface of the storage sleeve, the upper surface of the storage sleeve is provided with an annular limiting groove, the inner wall of the annular limiting groove is slidably connected with arc-shaped sliders distributed in an annular array;

[0009] The outer surface of the hollow screw is provided with a convenient lifting device, and the convenient lifting device comprises a threaded ring, and the inner wall of the threaded ring is threadedly connected to the outer surface of the hollow screw.

[0010] Preferably, the lower surface of the threaded ring is fixedly connected to the upper surface of the arc-shaped sliding block, the upper surface of the hollow screw is fixedly connected to a support platform, and the upper surface of the support platform is provided with symmetrically distributed travel grooves.

[0011] Preferably, two-way screws are installed on the inner walls on both sides of the support platform through bearings, a worm gear is fixedly sleeved on the outer surface of the two-way screw, and a servo motor is fixedly installed on the inner bottom wall of the support platform.

[0012] Preferably, a worm is fixedly mounted on the output shaft of the servo motor via a coupling, the outer surface of the worm is meshed with the tooth surface of the worm wheel, and the outer surface of the bidirectional lead screw is threadedly connected with symmetrically distributed thread blocks.

[0013] Preferably, a moving block is fixedly connected to the upper surface of the threaded block, one end of the moving block passes through the travel groove and extends to the upper surface of the support platform, and one end of the moving block is fixedly connected to an arc-shaped support block.

[0014] Preferably, a first mounting groove is opened at the upper end of the arc-shaped support block, and the inner walls on both sides of the first mounting groove are fixedly connected with support rods, and the outer surface of the support rod is equipped with an arc-shaped rotating pressure block through a bearing, and the two side surfaces of the arc-shaped rotating pressure block are fixedly connected with symmetrically distributed torsion springs.

[0015] Preferably, one end of the torsion spring is fixedly connected to an inner wall of one side of the first mounting groove, one end of the arc-shaped rotating pressure block is provided with a second mounting groove, and rollers are installed on both inner walls of the second mounting groove through bearings.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In the utility model, through the convenient lifting device, the lifting and lowering adjustment can be achieved through single-person operation, thereby improving the convenience of adjusting the height, and the smoke pipe is supported and limited by automation, thereby avoiding manual climbing operations, thereby eliminating the safety hazard of climbing escalators, and through the elastic limit of the smoke pipe, it is possible to avoid the smoke pipe from shaking significantly when it is affected by external wind during installation and welding, thereby improving the concentricity alignment efficiency and welding quality during smoke pipe welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the main structure of a support device provided by the utility model for facilitating large-span flue welding;

[0019] Figure 2 A three-dimensional diagram of a storage sleeve structure of a support device provided by the utility model for facilitating large-span flue welding;

[0020] Figure 3 An exploded view of a threaded ring structure of a support device provided by the utility model for facilitating large-span flue welding;

[0021] Figure 4 A three-dimensional diagram of the support platform structure of a support device provided by the utility model for facilitating large-span flue welding;

[0022] Figure 5 A three-dimensional diagram of the arc-shaped support block structure of a support device for facilitating large-span flue welding provided by the utility model;

[0023] Figure 6 An exploded view of an arc-shaped rotating pressing block structure of a supporting device provided by the utility model for facilitating large-span flue welding.

[0024] Legend: 1. Mobile base; 2. Self-locking universal wheel; 3. Storage sleeve; 4. Limit column; 5. Hollow screw; 6. Annular limit slide groove; 7. Arc-shaped slider; 8. Threaded ring; 81. Support platform; 82. Travel groove; 83. Bidirectional lead screw; 84. Worm gear; 85. Servo motor; 86. Worm; 87. Threaded block; 88. Mobile block; 89. Arc-shaped support block; 810. First mounting groove; 811. Support rod; 812. Arc-shaped rotating pressure block; 813. Torsion spring; 814. Second mounting groove; 815. Roller. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0029] Example 1

[0030] like Figure 1-6As shown, the utility model provides a technical solution: a supporting device for large-span flue welding, comprising a movable base 1, a push handle is arranged on the top of the movable base 1 for easy movement, a self-locking universal wheel 2 distributed in a rectangular array is fixedly installed on the lower surface of the movable base 1, a storage sleeve 3 is fixedly connected to the upper surface of the movable base 1, a limiting column 4 is fixedly connected to the inner bottom wall of the storage sleeve 3, a hollow screw 5 is movably sleeved on the outer surface of the limiting column 4, the limiting column 4 plays a role in limiting the rotation of the hollow screw 5, one end of the hollow screw 5 passes through and extends to the upper surface of the storage sleeve 3, an annular limiting slide groove 6 is opened on the upper surface of the storage sleeve 3, and an arc-shaped slider 7 distributed in an annular array is slidably connected to the inner wall of the annular limiting slide groove 6;

[0031] The outer surface of the hollow screw 5 is provided with a convenient lifting device, and the convenient lifting device includes a threaded ring 8 , and the inner wall of the threaded ring 8 is threadedly connected to the outer surface of the hollow screw 5 .

[0032] Example 2

[0033] like Figure 1-6 As shown, the utility model provides a technical solution: the lower surface of the threaded ring 8 is fixedly connected to the upper surface of the arc-shaped slider 7, the upper surface of the hollow screw 5 is fixedly connected to a support platform 81, the upper surface of the support platform 81 is provided with symmetrically distributed travel grooves 82, the arc-shaped slider 7 plays a role in cooperating with the threaded ring 8 for positioning and rotation, and a handle is provided on the outer side of the threaded ring 8 to facilitate driving the threaded ring 8 to rotate.

[0034] A bidirectional screw 83 is installed on the inner walls of both sides of the support platform 81 through bearings. A worm gear 84 is fixedly sleeved on the outer surface of the bidirectional screw 83. A servo motor 85 is fixedly installed on the inner bottom wall of the support platform 81. The rotation of the worm gear 84 drives the bidirectional screw 83 to rotate.

[0035] The output shaft of the servo motor 85 is fixedly mounted with a worm 86 through a coupling. The outer surface of the worm 86 meshes with the tooth surface of the worm wheel 84. The outer surface of the bidirectional lead screw 83 is threadedly connected with symmetrically distributed thread blocks 87. The rotation of the bidirectional lead screw 83 drives the two thread blocks 87 to move synchronously relative to or opposite to each other.

[0036] A moving block 88 is fixedly connected to the upper surface of the threaded block 87. One end of the moving block 88 passes through the travel groove 82 and extends to the upper surface of the support platform 81. One end of the moving block 88 is fixedly connected to an arc-shaped support block 89. The smoke pipe is supported by the relative movement of the two arc-shaped support blocks 89, so that it is suitable for supporting smoke pipes of different diameters, thereby improving the scope of application.

[0037] A first mounting groove 810 is provided at the upper end of the arc-shaped support block 89, and support rods 811 are fixedly connected to the inner walls on both sides of the first mounting groove 810. An arc-shaped rotating pressure block 812 is installed on the outer surface of the support rod 811 through a bearing. The two side surfaces of the arc-shaped rotating pressure block 812 are fixedly connected with symmetrically distributed torsion springs 813. The arc-shaped rotating pressure block 812 stores energy through the torsion force of the torsion spring 813, so that one end of it limits the smoke pipe, further improving the stability during support.

[0038] One end of the torsion spring 813 is fixedly connected to an inner wall of one side of the first mounting groove 810, and a second mounting groove 814 is provided at one end of the arc-shaped rotating pressure block 812. Rollers 815 are installed on the inner walls of both sides of the second mounting groove 814 through bearings. The rollers 815 convert the contact friction with the smoke pipe into rolling friction, thereby protecting the smoke pipe.

[0039] Through the convenient lifting device, the lifting and lowering adjustment can be achieved through single-person operation, which improves the convenience of adjusting the height. The smoke pipe is supported and limited automatically to avoid manual climbing operations, thereby eliminating the safety hazards of climbing escalators. The elastic limit of the smoke pipe can prevent the smoke pipe from shaking drastically when affected by external wind during installation and welding, thereby improving the concentricity alignment efficiency and welding quality during smoke pipe welding.

[0040] The utility model workflow:

[0041] Step 1: The push handle cooperates with the self-locking universal wheel 2 to facilitate the movement of the mobile base 1. When the mobile base 1 is moved to the bottom of the smoke pipe to be supported, the self-locking universal wheel 2 is locked, and the threaded ring 8 is driven by the handle to rotate clockwise. The rotation of the threaded ring 8 is positioned and rotated through the cooperation of the annular limiting slide groove 6 and the arc-shaped slider 7, so that the hollow screw 5 is driven to move upward through the cooperation of the limiting column 4. The upward movement of the hollow screw 5 drives the two arc-shaped support blocks 89 to move upward to both sides of the smoke pipe through the support platform 81, and then the threaded ring 8 is stopped;

[0042] Step 2: Start the servo motor 85 to drive the worm 86 to rotate clockwise. The rotation of the worm 86 drives the bidirectional screw 83 to rotate through the meshing worm wheel 84. The rotation of the bidirectional screw 83 drives the two threaded blocks 87 and the moving block 88 to move relative to each other through the limit of the stroke groove 82, so that the two arc-shaped support blocks 89 move relative to each other to limit the smoke pipe. The movement of the arc-shaped support block 89 drives the arc-shaped rotating pressing block 812 to move. When one end of the arc-shaped rotating pressing block 812 contacts the smoke pipe through the roller 815, it rolls with the smoke pipe through the roller 815 to reduce the movement friction.

[0043] Step three, the continuous movement of the arc support block 89 will cause the cigarette pipe to squeeze one end of the arc rotating pressure block 812, thereby causing the arc rotating pressure block 812 to rotate, and then causing the torsion spring 813 to store energy, and the torsion reset effect of the torsion spring 813 causes one end of the arc rotating pressure block 812 to generate downward pressure potential energy. When the two arc support blocks 89 are in contact, the downward pressure potential energy generated by one end of the arc rotating pressure block 812 further limits the cigarette pipe. At this time, the threaded ring 8 is rotated again to cause the hollow screw 5 to continue to drive the arc support block 89 to move upward until the inner bottom of the arc support block 89 is in supporting contact with the cigarette pipe. At the same time, the arc rotating pressure block 812 continues to limit the upper end of the cigarette pipe through the torsion of the torsion spring 813, and the cigarette pipe clamped by the arc support block 89 can be driven to move upward by continuously rotating the rotating threaded ring 8, so as to facilitate the upward adjustment to a suitable position and align the center of the adjacent cigarette pipe to facilitate welding and installation.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A supporting device for large-span flue welding, comprising a movable base (1), characterized in that: The lower surface of the mobile base (1) is fixedly mounted with self-locking universal wheels (2) distributed in a rectangular array, the upper surface of the mobile base (1) is fixedly connected with a storage sleeve (3), the inner bottom wall of the storage sleeve (3) is fixedly connected with a limiting column (4), the outer surface of the limiting column (4) is movably sleeved with a hollow screw (5), one end of the hollow screw (5) passes through and extends to the upper surface of the storage sleeve (3), the upper surface of the storage sleeve (3) is provided with an annular limiting groove (6), and the inner wall of the annular limiting groove (6) is slidably connected with an arc-shaped slider (7) distributed in an annular array; The outer surface of the hollow screw (5) is provided with a convenient lifting device, and the convenient lifting device comprises a threaded ring (8), the inner wall of the threaded ring (8) being threadedly connected to the outer surface of the hollow screw (5).

2. A supporting device for large-span flue welding according to claim 1, characterized in that: The lower surface of the threaded ring (8) is fixedly connected to the upper surface of the arc-shaped slider (7), and the upper surface of the hollow screw (5) is fixedly connected to a support platform (81), and the upper surface of the support platform (81) is provided with symmetrically distributed travel grooves (82).

3. A supporting device for large-span flue welding according to claim 2, characterized in that: Two-way screw rods (83) are installed on the inner walls of both sides of the support platform (81) through bearings, a worm wheel (84) is fixedly sleeved on the outer surface of the two-way screw rod (83), and a servo motor (85) is fixedly installed on the inner bottom wall of the support platform (81).

4. A supporting device for facilitating large-span flue welding according to claim 3, characterized in that: The output shaft of the servo motor (85) is fixedly mounted with a worm (86) via a coupling, the outer surface of the worm (86) meshes with the tooth surface of the worm wheel (84), and the outer surface of the bidirectional lead screw (83) is threadedly connected with symmetrically distributed thread blocks (87).

5. A supporting device for large-span flue welding according to claim 4, characterized in that: A moving block (88) is fixedly connected to the upper surface of the threaded block (87), one end of the moving block (88) passes through the travel groove (82) and extends to the upper surface of the support platform (81), and one end of the moving block (88) is fixedly connected to an arc-shaped support block (89).

6. A supporting device for facilitating large-span flue welding according to claim 5, characterized in that: A first mounting groove (810) is provided at the upper end of the arc-shaped support block (89), and support rods (811) are fixedly connected to the inner walls on both sides of the first mounting groove (810), and an arc-shaped rotating pressure block (812) is installed on the outer surface of the support rod (811) through a bearing, and symmetrically distributed torsion springs (813) are fixedly connected to the two side surfaces of the arc-shaped rotating pressure block (812).

7. A supporting device for large-span flue welding according to claim 6, characterized in that: One end of the torsion spring (813) is fixedly connected to an inner wall of one side of the first mounting groove (810), and one end of the arc-shaped rotating pressure block (812) is provided with a second mounting groove (814), and rollers (815) are installed on the inner walls of both sides of the second mounting groove (814) through bearings.

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