Fan rack welding positioning clamp

Abstract

The utility model discloses a welding and positioning fixture for a fan rack, relates to the technical field of fan processing, and aims to solve the problems of inconvenience in fixation of a fan shell and a rack and low processing efficiency in the current fan processing process in the prior art. The fan shell and the rack can be effectively positioned, so that the fan shell and the rack are more convenient to weld and fix, and the machining efficiency and the welding precision are improved. The third transverse frame and the second transverse frame provide supporting and positioning from the lower portion and the upper portion respectively, it is ensured that the rack is stably placed, the supporting plate is used in cooperation with the upper positioning piece and the lower positioning piece, the position of the rack is further fixed, welding and fixing between the fan shell and the rack are more accurate and reliable, the welding stability is improved, and the working efficiency is improved. And welding defects caused by inaccurate positioning are reduced, so that the overall welding quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan processing, in particular to a fan frame welding positioning fixture. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and conveying grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] The main structural components of the fan are the impeller, casing, air inlet, bracket, motor, pulley, coupling, muffler, transmission bearings, etc. Considering the air supply direction and efficiency, the shape of the fan is generally an irregular volute. The fan frame shape is mainly composed of the casing and the bracket welded together. The existing welding positioning fixture cannot properly assist in positioning the fan casing and the frame, which makes the welding and fixation between the fan casing and the frame more inconvenient and the processing efficiency is low.

[0004] Therefore, the present application provides a fan frame welding positioning fixture to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide a fan frame welding positioning fixture to facilitate the positioning of the fan frame and improve the convenience and efficiency of fan frame welding.

[0006] To achieve the above objectives, the present application provides the following technical solutions: a fan frame welding positioning fixture, comprising:

[0007] A base, the base comprising two sets of symmetrical longitudinal beams;

[0008] There are two groups of inclined beams, which are symmetrically located in the front of the base and tilted backward. A lower positioning rod is provided on the right inclined beam;

[0009] A third cross frame, the third cross frame is located at the lower front part of the oblique beam, lower positioning pieces are symmetrically provided at both ends of the front side of the third cross frame, and a supporting plate is symmetrically provided on the front side of the third cross frame, the supporting plate is used to support the frame;

[0010] a second cross frame, the second cross frame is located at the upper front side of the oblique beam, the length of the second cross frame is greater than that of the third cross frame, an upper positioning member and an upper positioning rod are provided on the front side of the second cross frame, the upper positioning member has two groups and is symmetrically arranged on both ends of the second cross frame, the upper positioning member and the lower positioning member are both located on the edge of the same circle to support the arc-shaped part of the casing, the positions of the upper positioning rod and the lower positioning rod correspond to and are matched in size, and a middle positioning rod is provided at the bottom of the second cross frame to position and support the middle part of the casing;

[0011] A first cross frame, the first cross frame is located at the top of the front side of the oblique beam, the first cross frame is the same length as the second cross frame, a positioning ear is provided at one end of the front side of the first cross frame, and a positioning hole is provided on the positioning ear to align with the mounting hole reserved on the frame.

[0012] Preferably, there are two groups of support plates that are symmetrical on the left and right. The positions of the support plates correspond to those of the lower positioning members. Positioning bolts are provided on the support plates. A space is left between the positioning bolts and the third cross frame for positioning the casing so as to limit the casing during welding.

[0013] Preferably, positioning blocks are symmetrically provided on the top of the first horizontal frame, and the positioning blocks position the frame from above.

[0014] Preferably, the inclined beam is hinged to the base, and the base is symmetrically provided with adjustment guide plates on the left and right, and the adjustment guide plates are provided with guide grooves. The outer sides of the inclined beams are hinged with support plates, and the ends of the support plates are penetrated by limiting bolts, and the limiting bolts pass through the guide grooves and are threadedly connected with splints, and the splints are slidably connected along the adjustment guide plates.

[0015] Preferably, the top ends of the inclined beams are each provided with a hanging lug.

[0016] Preferably, bottom cross frames are symmetrically provided at the bottom of the base, and rollers are symmetrically provided at the bottom of each group of bottom cross frames.

[0017] Preferably, a support bar is provided at the bottom of the second horizontal frame, the support bar is close to the middle positioning rod on the left side, and the support bar is used to support and position the casing.

[0018] In summary, the technical effects and advantages of the utility model are:

[0019] This fan frame welding positioning fixture forms a stable support structure through the cooperation of the base and inclined beams. It can effectively position the fan casing and frame, making it easier to weld and fix the fan casing and frame together, improving processing efficiency and welding precision. The third and second cross frames provide support and positioning from below and above, respectively, ensuring the stable placement of the frame. The use of the support plate in conjunction with the upper and lower positioning members further fixes the position of the frame, making the welding between the fan casing and frame more precise and reliable. This not only improves the stability of the welding, but also reduces welding defects caused by inaccurate positioning, thereby improving overall welding quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is one of the overall structural diagrams of the utility model;

[0022] Figure 2 This is a front structural diagram of the present invention;

[0023] Figure 3 It is a right side structural schematic diagram of the present utility model;

[0024] Figure 4 This is the second schematic diagram of the overall structure of the utility model;

[0025] Figure 5 This is an enlarged structural diagram of point A of the present invention.

[0026] In the figure: 1. Base; 2. Inclined beam; 3. Third cross frame; 4. Second cross frame; 5. First cross frame; 6. Bottom cross frame; 7. Support plate; 8. Clamp; 9. Limit bolt; 10. Adjustment guide; 20. Hanging ear; 21. Lower positioning rod; 30. Lower positioning piece; 31. Support plate; 40. Upper positioning piece; 41. Middle positioning rod; 42. Upper positioning rod; 43. Support bar; 50. Positioning ear; 51. Positioning block; 60. Roller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: Reference Figure 1-5 The welding positioning fixture of a fan frame shown in the figure includes a base 1, which is two sets of symmetrical longitudinal beams. Two sets of oblique beams 2 are symmetrically provided on the front of the base 1, and the oblique beams 2 are tilted backward. A lower positioning rod 21 is provided on the right oblique beam 2, and a third cross frame 3 is provided on the front lower part of the oblique beam 2. Lower positioning members 30 are symmetrically provided at both ends of the front side of the third cross frame 3. A support plate 31 is symmetrically provided on the front side of the third cross frame 3, and the support plate 31 is used to support the frame; a second cross frame 4 is provided on the front upper part of the oblique beam 2, and the length of the second cross frame 4 is greater than that of the third cross frame 3. 4 is provided with an upper positioning member 40 and an upper positioning rod 42 on the front side. There are two groups of upper positioning members 40 and they are symmetrically arranged at both ends of the second cross frame 4. The upper positioning member 40 and the lower positioning member 30 are both located on the edge of the same circle. The upper positioning rod 42 and the lower positioning rod 21 correspond to each other in the upper and lower positions on the oblique beam 2. A middle positioning rod 41 is provided at the bottom of the second cross frame 4; a first cross frame 5 is provided at the top of the front side of the oblique beam 2. The first cross frame 5 has the same length as the second cross frame 4. A positioning ear 50 is provided at one end of the front side of the first cross frame 5, and a positioning hole is provided on the positioning ear 50.

[0029] As an implementation method in this embodiment, in order to adapt to the irregular shape of the casing with both curved surfaces and straight edges, as shown in the figure, there are two groups of support plates 31 and they are symmetrical on the left and right. The support plates 31 are adapted to the height of the lower positioning member 30. A positioning bolt is provided on the support plate 31, and a space is left between the positioning bolt and the third cross frame 3 for positioning the frame.

[0030] As an implementation method in this embodiment, in order to improve the position stability of the casing during welding, as shown in FIG. Figure 1 、 Figure 2 As shown, positioning blocks 51 are symmetrically provided on the top of the first horizontal frame 5, and the positioning blocks 51 position the frame from above.

[0031] As an implementation method in this embodiment, in order to facilitate the adjustment of the angle of the inclined beam 2 during welding and improve the welding convenience, Figures 1 to 5 As shown, the inclined beam 2 is hinged to the base 1, and the base 1 is symmetrically provided with adjustment guide plates 10, and the adjustment guide plates 10 are provided with guide grooves. The outer sides of the inclined beam 2 are hinged with support plates 7, and the ends of the support plates 7 are penetrated by limit bolts 9, which pass through the guide grooves and are threadedly connected with splints 8, and the splints 8 are slidably connected along the adjustment guide plates 10.

[0032] As an implementation method in this embodiment, in order to facilitate lifting and transportation, Figures 1 to 4 As shown, the top ends of the inclined beams 2 are each provided with a hanging lug 20 .

[0033] As an implementation method in this embodiment, for the convenience of movement, Figures 1 to 4 As shown, bottom cross frames 6 are symmetrically provided at the front and back of the bottom of the base 1 , and rollers 60 are symmetrically provided at the bottom of each set of bottom cross frames 6 .

[0034] As an implementation method in this embodiment, in order to improve the stability of the positioning and supporting housing during welding, as shown in FIG. Figures 1 to 4 As shown, a support bar 43 is provided at the bottom of the second horizontal frame 4. The support bar 43 is close to the left middle positioning rod 41. The support bar 43 is used to support the positioning frame.

[0035] The working principle of this utility model is as follows: when welding the frame, first rotate the inclined beam 2 to adjust the inclination angle of the inclined beam 2. During this process, the inclined beam 2 drives the splint 8 to move along the adjusting guide plate 10 through the support plate 7 and the limit bolt 9. After determining the angle of the inclined beam 2, the limit bolt 9 and the splint 8 are tightened and fixed to fix the position of the splint 8 and the adjusting guide plate 10, thereby fixing the inclined beam 2. Then place the cut and formed casing so that the straight edge of the casing falls on the support plate 31, and the lower positioning piece 30 and the upper positioning piece 40 align the arc edge of the casing from the outside, and the positioning ear 50 is aligned with the assembly opening reserved on one side of the casing. At this time, the first cross frame 5, the second cross frame 4, and the third cross frame 3 support the back side of the casing, and the middle positioning rod 41, the upper positioning rod 42, the lower positioning rod 21 and the positioning block 51 are all in position. The bracket is welded horizontally on the casing with the two groups of middle positioning rods 41 as the reference, and the bracket is welded vertically with the line connecting the upper positioning rod 42 and the lower positioning rod 21 as the reference. The bracket is welded horizontally on the upper part of the casing with the two groups of positioning blocks 51 as the reference, and the bracket is welded on the upper part of the casing with each group of positioning blocks 51 as the reference, and the lower positioning rod 21 is used as the reference to weld the bracket horizontally on the right side of the casing. The support bar 43 cooperates with the lower positioning rod 21 to facilitate the horizontal welding of the bracket on the left side of the casing, thereby enhancing the clamping and fixing effect of the casing and improving the welding efficiency. The use of the hanging ear 20 facilitates hoisting and transportation. The structural stability is enhanced by connecting the bottom cross frame 6 of the base 1. The use of the roller 60 facilitates pushing and moving the position.

[0036] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0037] Components not described in detail herein are prior art.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fan frame welding positioning fixture, characterized in that: include: A base (1), wherein the base (1) comprises two sets of symmetrical longitudinal beams; Inclined beams (2), the inclined beams (2) having two groups and symmetrically located in front of the base (1), and the inclined beams (2) tilted backward, with a lower positioning rod (21) provided on the right inclined beam (2); A third cross frame (3), the third cross frame (3) is located at the lower front portion of the oblique beam (2), lower positioning members (30) are symmetrically provided at both ends of the front side of the third cross frame (3), and a supporting plate (31) is symmetrically provided on the front side of the third cross frame (3), and the supporting plate (31) is used to support the frame; a second cross frame (4), the second cross frame (4) is located at the upper front side of the inclined beam (2), the length of the second cross frame (4) is greater than that of the third cross frame (3), an upper positioning member (40) and an upper positioning rod (42) are provided at the front side of the second cross frame (4), the upper positioning member (40) has two groups and is symmetrically arranged at both ends of the second cross frame (4), the upper positioning member (40) and the lower positioning member (30) are both located on the edge of the same circle, the upper positioning rod (42) and the lower positioning rod (21) are positioned and matched in size, and a middle positioning rod (41) is provided at the bottom of the second cross frame (4); A first cross frame (5), the first cross frame (5) is located at the top of the front side of the inclined beam (2), the first cross frame (5) and the second cross frame (4) have the same length, a positioning ear (50) is provided at one end of the front side of the first cross frame (5), and a positioning hole is provided on the positioning ear (50).

2. A fan frame welding positioning fixture according to claim 1, characterized in that: There are two groups of support plates (31) that are symmetrical on both sides. The positions of the support plates (31) correspond to the positions of the lower positioning members (30). Positioning bolts are provided on the support plates (31). A space for positioning the frame is left between the positioning bolts and the third cross frame (3).

3. The fan frame welding positioning fixture according to claim 1, characterized in that: Positioning blocks (51) are symmetrically provided on the top of the first horizontal frame (5), and the positioning blocks (51) position the frame from above.

4. The fan frame welding positioning fixture according to claim 1, characterized in that: The inclined beam (2) is hinged to the base (1), and the base (1) is symmetrically provided with an adjustment guide plate (10), and the adjustment guide plate (10) is provided with a guide groove. The outer side of the inclined beam (2) is hinged with a support plate (7), and the end of the support plate (7) is penetrated by a limiting bolt (9), and the limiting bolt (9) passes through the guide groove and is threadedly connected to a clamping plate (8), and the clamping plate (8) is slidably connected along the adjustment guide plate (10).

5. The fan frame welding positioning fixture according to claim 1, characterized in that: The top ends of the inclined beams (2) are each provided with hanging ears (20).

6. The fan frame welding positioning fixture according to claim 1, characterized in that: Bottom cross frames (6) are symmetrically provided at the front and rear ends of the bottom of the base (1), and rollers (60) are symmetrically provided at the bottom of each group of bottom cross frames (6).

7. The fan frame welding positioning fixture according to claim 1, characterized in that: A support bar (43) is provided at the bottom of the second horizontal frame (4), and the support bar (43) is close to the middle positioning rod (41) on the left side. The support bar (43) is used to support the positioning frame.

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