Tooling fixtures for welding axial flow fan casings

Abstract

This application provides a tooling fixture for welding the duct of an axial flow fan, including a base with a fixing ring in the middle. The base and the fixing ring are connected by a slide rail, a slider is mounted on the slide rail, and an integrally formed abutment plate is provided on the top end face of the slider. A pressure block is provided on the slider for cooperating with it, and a tooling fixture for clamping the duct body is provided on the top end face of the pressure block. This utility model, by adding multiple tooling fixtures that cooperate with the abutment plate and pressure block, achieves clamping of the duct body from multiple positions, effectively preventing displacement during welding, significantly improving welding quality, and resulting in higher weld consistency.

Description

Technical Field

[0001] This utility model belongs to the field of axial flow fan casing welding technology, and particularly relates to tooling fixtures for welding axial flow fan casings. Background Technology

[0002] Axial flow fans are widely used in industry, construction, shipbuilding, and other fields. The welding quality directly affects their structural strength, aerodynamic performance, and service life. Traditional manual welding is inefficient, inconsistent, and requires high labor costs for post-weld grinding. Therefore, it is necessary to develop fully automated welding processes to achieve efficient and high-precision production.

[0003] The product to be welded is the duct of an axial flow fan. The duct diameter is 300-1400mm, the maximum height is 1100mm, and the weight is approximately 400kg. Due to the large size and heavy weight of the duct, traditional duct welding mostly relies on manual fixation. However, manual fixation can easily cause the duct to shift. When welding a 400kg workpiece, the concentrated thermal stress makes it extremely easy for this to cause deviation in the ellipticity of the duct, resulting in large weld seams that require manual correction later, or even rendering the duct unusable. Utility Model Content

[0004] In view of the problems existing in the background art, the present invention provides a tooling fixture for welding the duct of an axial flow fan, including a base, and a fixing ring is provided in the middle of the base. The base and the fixing ring are connected by a slide rail. A slider is installed on the slide rail, and an abutment plate integrally formed therewith is provided on the top end face of the slider. A pressure block is provided on the slider for cooperating with it. A tooling fixture for clamping the duct body is provided on the top end face of the pressure block.

[0005] Optionally, the fixing ring has multiple sets of grooves evenly distributed along its circumference, and a slide rail is installed in the groove, with the end face of the slide rail away from the fixing ring fixedly installed on the top end face of the base.

[0006] Optionally, rubber friction protrusions are provided on the end face of the contact plate on the inner wall of the air duct near the air duct.

[0007] Optionally, the slider is provided with a groove for the pressure block to extend into, so that the pressure block can move on the slider and be fixed in position by fastening bolts.

[0008] Optionally, the tooling fixture includes a hydraulic cylinder, a horizontal plate is welded to the top end face of the extended end of the hydraulic cylinder, an ear plate is welded to the top of the support roller shaft on the horizontal plate, and the ear plate is connected to the connecting end through a first hinge.

[0009] Optionally, a support end is provided at the position of the maximum diameter of the connecting end, and the longitudinal plate of the support end is welded and installed on the transverse plate.

[0010] Optionally, the connecting end away from the protruding end is connected to the clamping arm via a second hinge, and the clamping arm has a groove to allow both ends of the clamping arm to clamp the inner and outer walls of the air duct body.

[0011] The inner wall of the clamping arm is provided with a protruding end integrally formed therewith, and the protruding end is made of elastic material and is installed on the inner wall of the clamping member.

[0012] Optionally, a fixing seat is mounted on the side end face of the support end, and an adjusting screw is internally threaded into the threaded hole of the fixing seat connection end. A connecting shaft is provided on the side end face of the adjusting screw, and the connecting shaft passes through the connection end of the fixing seat and is connected to a handwheel integrally formed therewith.

[0013] Furthermore, a pressure plate is welded to the end face of the adjusting screw that is away from the fixed base.

[0014] In summary, the beneficial effects of this utility model are:

[0015] This invention adds multiple tooling fixtures that work in conjunction with the contact plate and pressure block to clamp the duct body from multiple directions, thereby effectively preventing displacement during welding, significantly improving welding quality, and resulting in higher weld consistency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the tooling fixture for welding the axial flow fan casing according to this utility model;

[0017] Figure 2 This is a partial structural diagram showing the internal components of a tooling fixture for welding the axial flow fan casing according to an embodiment of the present invention.

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at position A in the middle;

[0019] Figure 4 This utility model Figure 1 Enlarged view of the structure at position B in the middle;

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at position C;

[0021] Figure 6 This utility model Figure 4Enlarged view of the middle section structure;

[0022] Figure 7 This utility model Figure 4 Enlarged view of the middle clamping component structure.

[0023] Figure label:

[0024] 1. Air duct; 011. Air duct base; 012. Air duct body;

[0025] 2. Base; 3. Fixing ring; 4. Slide rail; 5. Pressure block; 061. Contact plate; 062. Slider;

[0026] 071. Hydraulic cylinder; 072. Horizontal plate; 0731. Ear plate; 0732. First hinge; 074. Support end; 075. Connecting end;

[0027] 081. Handwheel; 082. Pressure plate; 083. Fixing base;

[0028] 9. Clamping component; 091. Second hinge component; 092. Clamping component; 093. Protruding end. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a more thorough understanding of the present utility model and to fully convey the concept of the present utility model to those skilled in the art.

[0030] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figure 1-7 As shown, this embodiment provides a tooling fixture for welding the axial flow fan casing, including a base 2, and a fixing ring 3 is provided in the middle of the base 2. The base 2 and the fixing ring 3 are connected by a slide rail 4. The fixing ring 3 has multiple sets of grooves evenly opened along its circumference, and the slide rail 4 is fixedly installed in the groove by fastening screws or other fixed connection methods. The end face of the slide rail 4 away from the fixing ring 3 is fixedly installed on the top end face of the base 2 by fastening screws or other fixed connection methods.

[0033] A slider 062 is installed on the slide rail 4. The slider 062 is a THK / SHS series electric slider with a built-in positioning sensor. An abutment plate 061 is provided on the top end face of the slider 062. Rubber friction protrusions are provided on the end face of the abutment plate 061 near the inner wall of the air duct body 012 of the air duct 1 to enhance the friction between the abutment plate 061 and the air duct body 012.

[0034] Furthermore, the slider 062 is provided with a pressure block 5 for use therewith. The slider 062 has a groove for the pressure block 5 to extend into, so that the pressure block 5 can move on the slider 062 and be fixed in position by fastening bolts.

[0035] In this embodiment, those skilled in the art should understand that before welding, the duct body is first placed on the base 2, at which point the contact plate 061 abuts against the inner wall of the duct body 012. The duct base 011 is then placed on the horizontal plate of the slider 062. The operator then pushes the pressure block 5 forward until its bottom surface presses against the top surface of the duct base 011, and then tightens the fastening bolts to fix its position. At this point, multiple sets of pressure blocks and contact plates enhance the fixation of the duct, preventing positional displacement during welding.

[0036] Furthermore, the top end face of the pressure block 5 is provided with a tooling fixture for clamping the air duct body 012, and the tooling fixture includes a hydraulic cylinder 071. The hydraulic cylinder 071 is an SG series telescopic hydraulic cylinder, and a horizontal plate 072 is welded to the top end face of the extended end of the hydraulic cylinder 071. An ear plate 0731 is welded to the top end of the support roller shaft located on the horizontal plate 072, and the ear plate 0731 is connected to the connecting end 075 through a first hinge member 0732.

[0037] Furthermore, a support end 074 is provided at the maximum diameter position of the connecting end 075 and is connected thereto, and the longitudinal plate of the support end 074 is welded and installed on the transverse plate 072.

[0038] Furthermore, the connecting end 075, located away from the protruding end 073, is connected to the clamping arm 092 via a second hinge 091. The clamping arm 092 has a groove to allow both ends of the clamping arm 092 to clamp the inner and outer walls of the air duct body.

[0039] To improve the clamping force, the inner wall of the clamping arm 092 is provided with a protruding end 093 integrated therewith, and the protruding end 093 is made of elastic material and is fixedly installed on the inner wall of the clamping member by means of adhesive or other methods.

[0040] In this embodiment, by opening the hydraulic cylinder 071, the extension of the extended end of the hydraulic cylinder 071 drives the horizontal plate 072 to move toward the top end face of the air duct body 012 away from the base until it moves to the corresponding position. Then, the hydraulic cylinder 071 is closed. At this time, the operator can clamp the air duct body by bending the clamping member 9 located at the top of the connecting end 075.

[0041] Furthermore, a fixing seat 083 is installed on the side end face of the support end 074 by means of fastening screws or other fixed connections. An adjusting screw is internally threaded into the threaded hole of the connecting end of the fixing seat 083. A connecting shaft is provided on the side end face of the adjusting screw, and the connecting shaft passes through the connecting end of the fixing seat 083 and is connected to a handwheel 081 integrally formed therewith.

[0042] Furthermore, a pressure plate 082 is welded onto the end face of the adjusting screw that is away from the fixed base 083.

[0043] In this embodiment, those skilled in the art should understand that before welding, the duct body is first placed on the base 2, at which point the contact plate 061 abuts against the inner wall of the duct body 012.

[0044] At this point, the air duct base 011 is placed on the horizontal plate of the slider 062. Then, the operator pushes the pressure block 5 forward until the bottom end face of the pressure block 5 presses against the top end face of the air duct base 011.

[0045] Then, by activating hydraulic cylinder 071, the extension of the extended end of hydraulic cylinder 071 drives the horizontal plate 072 to move towards the top end face of the air duct body 012 away from the base until it moves to the corresponding position. Then, the hydraulic cylinder 071 is closed. At this time, the operator can use the clamping member 9 located at the top of the connecting end 075 to clamp the air duct body.

[0046] At the same time, the staff rotates the handwheel, which drives the adjusting screw to rotate continuously, thereby causing the pressure plate 082 to come into contact with the outer wall of the air duct, thus achieving clamping of the air duct body in multiple directions.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tooling fixture for welding the casing of an axial flow fan, characterized in that, It includes a base and a clamping component, and a fixing ring is provided in the middle of the base. The base and the fixing ring are connected by a slide rail. A slider is installed on the slide rail, and an abutment plate is provided on the top end face of the slider. A pressure block is provided on the slider for use with it. A tooling fixture for clamping the air duct body is provided on the top end face of the pressure block.

2. The tooling fixture for welding the axial flow fan casing according to claim 1, characterized in that, The fixing ring has multiple sets of grooves evenly distributed along its circumference, and slide rails are installed in the grooves. The end face of the slide rails away from the fixing ring is fixedly installed on the top end face of the base.

3. The tooling fixture for welding the axial flow fan casing according to claim 1, characterized in that, Rubber friction protrusions are provided on the end face of the contact plate on the inner wall of the air duct near the air duct.

4. The tooling fixture for welding the axial flow fan casing according to claim 1, characterized in that, The slider has a groove for the pressure block to extend into, so that the pressure block can move on the slider and be fixed in position by fastening bolts.

5. The tooling fixture for welding the axial flow fan casing according to claim 1, characterized in that, The tooling fixture includes a hydraulic cylinder, a horizontal plate is welded to the top end face of the extended end of the hydraulic cylinder, an ear plate is welded to the top of the support roller shaft on the horizontal plate, and the ear plate is connected to the connecting end through a first hinge.

6. The tooling fixture for welding the axial flow fan casing according to claim 5, characterized in that, A support end is provided at the position of the maximum diameter of the connecting end, and the longitudinal plate of the support end is welded and installed on the horizontal plate.

7. The tooling fixture for welding the axial flow fan casing according to claim 6, characterized in that, The connecting end, away from the protruding end, is connected to the clamping arm via a second hinge, and the clamping arm has a groove to allow both ends of the clamping arm to clamp the inner and outer walls of the air duct body. The inner wall of the clamping arm is provided with a protruding end integrally formed therewith, and the protruding end is made of elastic material and is installed on the inner wall of the clamping member.

8. The tooling fixture for welding the axial flow fan casing according to claim 7, characterized in that, A fixing seat is mounted on the side end face of the support end, and an adjusting screw is threadedly connected to the threaded hole of the fixing seat connection end. A connecting shaft is provided on the side end face of the adjusting screw, and the connecting shaft passes through the connection end of the fixing seat and is connected to a handwheel integrally formed therewith. A pressure plate is welded to the end face of the adjusting screw that is away from the fixed base.

Images