A positioning device for welding a smoke tube

Abstract

The utility model provides a kind of positioning device for smoke pipe welding, it is related to smoke pipe welding technical field, including positioning support and the fixed support for fixed positioning support, positioning support includes connecting plate, the first positioning plate being connected with the one end of connecting plate and the at least two second positioning plates being set along the length direction interval of connecting plate, first positioning plate and second positioning plate are located in the same side of connecting plate, the side of first positioning plate on connecting plate is connected by bolt with fixed support;Wherein, the board surface of first positioning plate is obliquely arranged, to be used for abutting with the bending surface of smoke exhaust elbow;The board surface of second positioning plate is perpendicular to the board surface of connecting plate, the one end of second positioning plate away from connecting plate is equipped with U-shaped clamping groove, clamping groove is adapted with the peripheral surface of smoke exhaust straight pipe.The utility model makes that single person can realize the alignment positioning between smoke exhaust elbow and smoke exhaust straight pipe end, compared with artificial positioning, positioning accuracy is greatly improved, and welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of smoke pipe welding technology, and in particular to a positioning device for smoke pipe welding. Background Technology

[0002] In the construction of smoke exhaust systems in modern buildings and industries, the welding and assembly of straight and curved smoke exhaust pipes is a core process. The welding quality directly affects the safety and reliability of the system operation. This welding process has strict requirements for the assembly precision of the pipe fittings. Before welding, the ends of the straight and curved smoke exhaust pipes must be accurately positioned to ensure high airtightness and structural load-bearing strength at the weld joint, thereby avoiding safety hazards and energy losses caused by smoke leakage.

[0003] Currently, the industry generally relies on manual operation for aligning and positioning the ends of the exhaust straight pipe and exhaust bend. The specific implementation process is as follows: the operator visually observes and manually adjusts the exhaust straight pipe and exhaust bend to calibrate the axis and make the ends flush. After subjectively confirming that the positioning meets the standard, another operator completes the welding operation.

[0004] However, the aforementioned manual positioning method has the following drawbacks: Firstly, limited by the operator's visual observation accuracy and hand operation stability, it is difficult to achieve high-precision positioning in complex spatial environments, easily leading to assembly deviations such as axial offset and angular tilt of pipe fittings. Furthermore, during prolonged high-intensity work, operator visual fatigue and muscle strain can further amplify positioning errors, resulting in quality defects such as inconsistent weld width and uneven penetration depth in welded joints. Secondly, when the exhaust pipe is in a confined operating space, such as close to a building's load-bearing wall, in areas with dense equipment piping, or in a suspended ceiling, operators struggle to effectively position the pipe fitting, leading to uncontrolled installation accuracy, low finished product qualification rate after welding, and a high risk of smoke leakage from the exhaust pipe. This not only increases subsequent rework and maintenance costs and the risk of project delays but also poses a significant safety hazard due to the leakage of toxic and harmful gases, severely restricting the installation efficiency and project quality of the exhaust system. Therefore, there is an urgent need to develop a positioning device for smoke pipe welding. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a positioning device for welding smoke pipes, which aims to solve the technical problem that the current industry generally relies on manual operation for the alignment and positioning of the ends of straight and curved smoke exhaust pipes. This method is limited by the accuracy of the operator's visual observation and the stability of hand control, making it difficult to achieve high-precision spatial positioning. Moreover, in a narrow operating space, it is difficult for manual positioning of pipe fittings, resulting in a low qualified rate of the finished product after welding, which can easily lead to smoke leakage in the smoke exhaust pipe.

[0006] The purpose of this utility model is to provide a positioning device for welding smoke pipes, including a positioning bracket and a fixing bracket for fixing the positioning bracket. The positioning bracket includes a connecting plate, a first positioning plate connected to one end of the connecting plate, and at least two second positioning plates spaced apart along the length of the connecting plate. The first positioning plate and the second positioning plates are located on the same side of the connecting plate, and the side of the connecting plate opposite to the first positioning plate is connected to the fixing bracket by bolts.

[0007] The first positioning plate is inclined to abut against the bending surface of the exhaust pipe; the second positioning plate is perpendicular to the connecting plate, and a U-shaped groove is provided at the end of the second positioning plate away from the connecting plate, which is adapted to the circumference of the exhaust pipe.

[0008] In addition, the positioning device for welding smoke pipes according to the present invention may also have the following additional technical features:

[0009] Furthermore, the first positioning plate includes a connecting part and a positioning part integrally connected to one end of the connecting part. The connecting part is provided with at least two connecting through holes, and bolts are threadedly connected to the connecting plate through the connecting through holes to achieve a fixed connection between the first positioning plate and the connecting plate.

[0010] The angle between the surface of the positioning part and the surface of the connecting plate is 30°-60°.

[0011] Furthermore, the connecting through hole has an oblong shape, and the long axis of the connecting through hole is set along the length of the connecting plate.

[0012] Furthermore, the positioning bracket also includes an anti-slip pad, which is disposed on the groove wall of the slot.

[0013] Furthermore, the fixed bracket includes a mounting plate, a first positioning block connected to one end of the mounting plate, and a second positioning block connected to the other end of the mounting plate. The first positioning block and the second positioning block are located on the same side of the mounting plate, and the side of the mounting plate opposite to the first positioning block is connected to the connecting plate by bolts.

[0014] Furthermore, the mounting plate has a mounting groove on the side opposite to the first positioning block. The mounting groove has a rectangular opening structure, and the length of the groove opening is the same as the width of the connecting plate. The mounting groove has at least two mounting through holes for mounting bolts.

[0015] Furthermore, the first positioning block is provided with a first positioning hole, the axial direction of which is set along the width direction of the mounting plate;

[0016] The second positioning block is provided with a second positioning hole, and the axial direction of the second positioning hole is set along the length direction of the mounting plate.

[0017] Furthermore, the first positioning hole is a circular hole, the second positioning hole is an oblong hole, and the long axis of the second positioning hole is set along the thickness direction of the mounting plate.

[0018] Furthermore, the fixing bracket also includes an abutment plate, one side of which is connected to the end of the first positioning block away from the mounting plate, and the surface of the abutment plate is parallel to the surface of the mounting plate.

[0019] Furthermore, the fixing bracket also includes at least two abutment blocks, one end of which is connected to the side of the mounting plate where the first positioning block is located, and the end face of the other end of which is flush with the side of the abutment plate opposite to the first positioning block.

[0020] Compared to existing technologies, the advantages of this novel positioning device for flue pipe welding are as follows: By using this device, a single person can align and position the ends of the exhaust bend and the exhaust straight pipe, eliminating the need for traditional two-person manual positioning and significantly reducing operation time. Simultaneously, the fit between the first positioning plate in the positioning bracket and the bending surface of the exhaust bend, and the precise engagement of the U-shaped groove in the second positioning plate with the exhaust straight pipe, ensure coaxiality between the pipe fittings. This significantly improves positioning accuracy compared to manual positioning, effectively preventing uneven welds and smoke leakage caused by inaccurate positioning, thus improving welding quality. Furthermore, the design of the abutment plate and abutment block of the fixed bracket allows for tight contact with walls or other device surfaces in narrow operating spaces. By increasing the contact area and friction, the stability of the fixed bracket is enhanced, overcoming the difficulty of traditional manual positioning in confined spaces and broadening the application range of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the positioning device for welding smoke pipes according to the present invention.

[0022] Figure 2 This is a schematic diagram of the positioning bracket in the positioning device for welding smoke pipes according to this utility model;

[0023] Figure 3 A schematic diagram of the fixed bracket in the positioning device for welding smoke pipes of the utility model;

[0024] Figure 4 A schematic diagram of the positioning device for welding smoke pipes according to this utility model.

[0025] The above-mentioned drawings include the following reference numerals: 10-fixed bracket; 11-mounting plate; 111-mounting groove; 112-mounting through hole; 12-first positioning block; 121-first positioning hole; 13-second positioning block; 131-second positioning hole; 14-abutting plate; 15-abutting block; 20-positioning bracket; 21-connecting plate; 22-first positioning plate; 221-connecting part; 222-positioning part; 223-connecting through hole; 23-second positioning plate; 231-slot; 30-exhaust bend; 40-exhaust straight pipe.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 4 The image shows a positioning device for welding flue pipes according to this utility model. It includes a positioning bracket 20 and a fixing bracket 10 for fixing the positioning bracket 20. The fixing bracket 10 and the positioning bracket 20 work together to align and position the ends of the straight exhaust pipe 40 and the curved exhaust pipe 30. Specifically, the positioning bracket 20 includes a connecting plate 21, a first positioning plate 22 connected to one end of the connecting plate 21, and at least two second positioning plates 23 spaced apart along the length of the connecting plate 21. The first positioning plate 22 and the second positioning plates 23 are located on the same side of the connecting plate 21. The side of the connecting plate 21 facing away from the first positioning plate 22 is connected to the fixing bracket 10 by bolts. In this embodiment, as shown... Figure 2 As shown, the bottom end of the connecting plate 21 is provided with a first positioning plate 22, and the top and middle positions of the connecting plate 21 are respectively provided with a second positioning plate 23. The surface of the first positioning plate 22 is inclined to abut against the bending surface of the exhaust pipe 30. The surface of the second positioning plate 23 is perpendicular to the surface of the connecting plate 21. The end of the second positioning plate 23 away from the connecting plate 21 is provided with a U-shaped groove 231. The groove 231 is adapted to the circumference of the exhaust pipe 40. The stable positioning of the exhaust pipe 40 is achieved by the engagement of the groove 231 with the exhaust pipe 40.

[0031] More specifically, the first positioning plate 22 includes a connecting portion 221 and a positioning portion 222 integrally connected to one end of the connecting portion 221. The connecting portion 221 is provided with at least two connecting through holes 223. Bolts are threadedly connected to the connecting plate 21 through the connecting through holes 223 to achieve a fixed connection between the first positioning plate 22 and the connecting plate 21. To accommodate exhaust pipes 30 of different specifications and angles and reduce equipment replacement costs due to changes in exhaust pipe specifications, the included angle between the plate surface of the positioning portion 222 and the plate surface of the connecting plate 21 is set to 30°-60°. As a specific example, in this embodiment, the included angle between the plate surface of the positioning portion 222 and the plate surface of the connecting plate 21 is 45°.

[0032] Furthermore, the connecting through hole 223 has an oblong hole structure, with the long axis of the connecting through hole 223 set along the length of the connecting plate 21. The oblong hole design allows the operator to easily move the entire first positioning plate 22 on the connecting plate 21 according to the actual installation requirements of the flue pipe. It can be adapted to the positioning support of the exhaust bend 30 at different heights, greatly enhancing the versatility of the positioning device.

[0033] To further improve the positioning effect of the exhaust straight pipe 40, the positioning bracket 20 also includes an anti-slip pad. The anti-slip pad is set on the groove wall of the slot 231. The design of the anti-slip pad can effectively increase the friction between the slot 231 and the exhaust straight pipe 40, and avoid the phenomenon of axial displacement of the exhaust straight pipe 40 during the welding process, thereby ensuring the welding accuracy and quality of the welding joint between the exhaust straight pipe 40 and the exhaust bend 30.

[0034] As an example, the fixed bracket 10 includes a mounting plate 11, a first positioning block 12 connected to one end of the mounting plate 11, and a second positioning block 13 connected to the other end of the mounting plate 11. The first positioning block 12 and the second positioning block 13 are located on the same side of the mounting plate 11, and the side of the mounting plate 11 facing away from the first positioning block 12 is connected to the connecting plate 21 by bolts.

[0035] Furthermore, a mounting groove 111 is provided on the side of the mounting plate 11 opposite to the first positioning block 12. The mounting groove 111 has a rectangular opening structure, and the length of the groove opening is consistent with the width of the connecting plate 21 to ensure that the connecting plate 21 can be stably embedded in the mounting groove 111. At least two mounting through holes 112 are provided in the mounting groove 111. The mounting through holes 112 are used to install bolts. The bolts pass through the mounting through holes 112 and are threaded to the side of the connecting plate 21 opposite to the first positioning plate 22, so as to achieve a more secure and tighter connection between the positioning bracket 20 and the fixed bracket 10, thereby effectively preventing the positioning bracket 20 from loosening or shifting during the welding of the smoke pipe.

[0036] Furthermore, the first positioning block 12 is provided with a first positioning hole 121, the axial direction of which is set along the width direction of the mounting plate 11; the second positioning block 13 is provided with a second positioning hole 131, the axial direction of which is set along the length direction of the mounting plate 11. Through these two positioning holes set in different directions, and by using suitable fasteners (such as expansion bolts, anchor bolts, etc.), the fixed bracket 10 can be fixed to the wall, equipment, or other preset installation positions, and the fixed bracket 10 can be fixed from multiple directions to ensure that the fixed bracket 10 remains stable even in complex installation environments, providing a reliable support foundation for the positioning bracket 20.

[0037] Furthermore, the first positioning hole 121 is a circular hole, and the second positioning hole 131 is an oblong hole. The long axis of the second positioning hole 131 is set along the thickness direction of the mounting plate 11. The oblong design of the second positioning hole 131 allows the fixing bracket 10 to be adjusted according to the slight deviation of the actual installation position during the fixing process, thereby improving the flexibility and adaptability of the fixing bracket 10 installation and ensuring that the fixing bracket 10 can be accurately installed in the preset position, thus ensuring the installation accuracy of the entire positioning device.

[0038] Furthermore, the fixing bracket 10 also includes an abutment plate 14 and at least two abutment blocks 15. One side of the abutment plate 14 is connected to the end of the first positioning block 12 away from the mounting plate 11, and the surface of the abutment plate 14 is parallel to the surface of the mounting plate 11. As a specific example, in this embodiment, two abutment blocks 15 are provided on the surface of the mounting plate 11 located between the first positioning block 12 and the second positioning block 13. These two abutment blocks 15 are spaced apart along the length of the mounting plate 11. Specifically, one end of the abutment block 15 is connected to the side of the mounting plate 11 where the first positioning block 12 is located, and the end face of the other end of the abutment block 15 is flush with the side of the abutment plate 14 away from the first positioning block 12. In practical applications, the abutment plate 14 and the abutment block 15 work together. When the positioning device for welding flue pipes of this application is used in a confined operating space, the abutment block 15 can tightly abut against the surface of the wall or other device. By increasing the contact area with the mounting surface, the friction between the fixed bracket 10 and the mounting surface is increased, preventing the fixed bracket 10 from sliding on the mounting surface. The abutment plate 14 further enhances the structural stability of the fixed bracket 10. Working in conjunction with the abutment block 15, it ensures that the fixed bracket 10 remains stable when subjected to external forces (such as vibrations during welding), thereby ensuring the accurate positioning of the positioning bracket 20 on the flue pipe and improving the quality and efficiency of flue pipe welding.

[0039] In practical use, the operating principle of the positioning device for welding smoke pipes of this application can be as follows: Figure 4 As shown, firstly, according to the installation positions of the exhaust straight pipe 40 and the exhaust elbow 30, the fixed bracket 10 is fixed to the wall, equipment, or other preset installation positions through the first positioning hole 121 of the first positioning block 12, the second positioning hole 131 of the second positioning block 13, and the appropriate fasteners, and the abutment plate 14 and the abutment block 15 are tightly abutted against the installation surface, further enhancing the installation stability of the fixed bracket 10.

[0040] Next, the positioning bracket 20 is connected and fixed to the mounting groove 111 of the fixed bracket 10 via the connecting plate 21 using bolts to achieve a stable connection between the positioning bracket 20 and the fixed bracket 10. The installation position of the first positioning plate 22 on the connecting plate 21 is adjusted according to the height of the exhaust pipe 30, so that the plate surface of the positioning part 222 of the first positioning plate 22 can be tightly fitted with the bending surface of the exhaust pipe 30. Then, the exhaust straight pipe 40 is inserted into the U-shaped groove 231 of the second positioning plate 23. The friction between the anti-slip pad on the groove wall of the groove 231 and the exhaust straight pipe 40 is used to firmly position the exhaust straight pipe 40 and align the ends of the exhaust straight pipe 40 and the exhaust bend 30, thereby achieving precise axial alignment between the two. At this time, temporary fixing devices such as C-clamps and bolt clamps can be used to fix the two. After fixing, the welding operation between the exhaust straight pipe 40 and the exhaust bend 30 can be carried out. During the welding process, the positioning device can always remain stable to ensure that the position of the exhaust pipe does not shift, thereby effectively improving the quality and efficiency of exhaust pipe welding and reducing welding quality problems and rework rate caused by inaccurate positioning.

[0041] In summary, the beneficial effects of the fixing device for welding flue pipes of this utility model are as follows: By using the positioning device of this application, a single person can achieve the alignment and positioning between the ends of the flue pipe bend and the flue pipe straight pipe, eliminating the need for the two-person cooperation required for traditional manual positioning, thus greatly shortening the operation time; at the same time, through the fit between the first positioning plate in the positioning bracket and the bending surface of the flue pipe, and the precise engagement of the U-shaped groove in the second positioning plate with the flue pipe straight pipe, the coaxiality between the pipe fittings can be guaranteed, significantly improving the positioning accuracy compared to manual positioning, effectively avoiding problems such as uneven welds and smoke leakage caused by inaccurate positioning, and improving the welding quality. Furthermore, the design of the abutment plate and abutment block of the fixing bracket allows it to fit tightly against the surface of the wall or other devices in narrow operating spaces (such as pipe wells, equipment mezzanines, etc.), increasing the contact area and friction, enhancing the stability of the fixing bracket, overcoming the difficulty of operation in confined spaces by traditional manual positioning, and broadening the application range of the device.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A positioning device for welding smoke pipes, characterized in that, The device includes a positioning bracket and a fixing bracket for fixing the positioning bracket. The positioning bracket includes a connecting plate, a first positioning plate connected to one end of the connecting plate, and at least two second positioning plates spaced apart along the length of the connecting plate. The first positioning plate and the second positioning plates are located on the same side of the connecting plate, and the side of the connecting plate opposite to the first positioning plate is connected to the fixing bracket by bolts. The first positioning plate is inclined to abut against the bending surface of the exhaust pipe; the second positioning plate is perpendicular to the connecting plate, and a U-shaped groove is provided at the end of the second positioning plate away from the connecting plate, which is adapted to the circumference of the exhaust pipe.

2. The positioning device for welding smoke pipes according to claim 1, characterized in that, The first positioning plate includes a connecting part and a positioning part integrally connected to one end of the connecting part. The connecting part is provided with at least two connecting through holes. A bolt passes through the connecting through holes and is threadedly connected to the connecting plate to achieve a fixed connection between the first positioning plate and the connecting plate. The angle between the surface of the positioning part and the surface of the connecting plate is 30°-60°.

3. The positioning device for welding smoke pipes according to claim 2, characterized in that, The connecting through hole has an oblong shape, and its long axis is set along the length of the connecting plate.

4. The positioning device for welding smoke pipes according to claim 1, characterized in that, The positioning bracket also includes an anti-slip pad, which is disposed on the groove wall of the slot.

5. The positioning device for welding smoke pipes according to claim 1, characterized in that, The fixed bracket includes a mounting plate, a first positioning block connected to one end of the mounting plate, and a second positioning block connected to the other end of the mounting plate. The first positioning block and the second positioning block are located on the same side of the mounting plate, and the side of the mounting plate opposite to the first positioning block is connected to the connecting plate by bolts.

6. The positioning device for welding smoke pipes according to claim 5, characterized in that, The mounting plate has a mounting groove on the side opposite to the first positioning block. The mounting groove has a rectangular opening structure. The length of the mounting groove is the same as the width of the connecting plate. The mounting groove has at least two mounting through holes for mounting bolts.

7. The positioning device for welding smoke pipes according to claim 5, characterized in that, The first positioning block is provided with a first positioning hole, and the axial direction of the first positioning hole is set along the width direction of the mounting plate; The second positioning block is provided with a second positioning hole, and the axial direction of the second positioning hole is set along the length direction of the mounting plate.

8. The positioning device for welding smoke pipes according to claim 7, characterized in that, The first positioning hole is a circular hole, and the second positioning hole is an oblong hole, with the long axis of the second positioning hole arranged along the thickness direction of the mounting plate.

9. The positioning device for welding smoke pipes according to claim 5, characterized in that, The fixing bracket also includes an abutment plate, one side of which is connected to the end of the first positioning block away from the mounting plate, and the surface of the abutment plate is parallel to the surface of the mounting plate.

10. The positioning device for welding smoke pipes according to claim 9, characterized in that, The fixing bracket also includes at least two abutment blocks. One end of the abutment block is connected to the side of the mounting plate where the first positioning block is located, and the end face of the other end of the abutment block is flush with the side of the abutment plate opposite to the first positioning block.

Images