A fixture for brazing fuel main pipe

Abstract

The present invention relates to the technical field of brazing fixtures, and specifically to a fixture for brazing a fuel manifold, comprising a driving mechanism located on a workbench, the driving mechanism comprising an electric track installed on the workbench and an electric slide sliding on the electric track, one end of the electric track being equipped with a first clamping mechanism for clamping the outer side of one end of the fuel manifold, the electric slide being equipped with a second clamping mechanism for cooperating with the first clamping mechanism to clamp the inner side of one end of the fuel manifold, and the electric slide being equipped with a third clamping mechanism for clamping both sides of the fuel manifold. The purpose of the present invention is to provide a fixture for brazing a fuel manifold, which can clamp both sides of the fuel manifold by means of a second clamping plate and a third clamping plate, and cooperate with the clamping plate and the first clamping plate to clamp one end of the fuel manifold, thereby being able to clamp the U-shaped fuel manifold at multiple locations, further improving the stability of both sides of the fuel manifold, ensuring consistency, and improving the quality of brazing.

Description

Technical Field

[0001] The invention relates to the technical field of brazing fixtures, in particular to a fixture for brazing a fuel main pipe. Background Art

[0002] The fuel manifold is an important component of the engine. The fuel required for the engine to work must be transported through the manifold, so the assembly welding process of the parts is particularly important. The brazed parts must ensure technical issues such as fuel flow, fuel distribution uniformity and spray quality.

[0003] Currently, during the brazing process of fuel manifolds, due to the U-shape of some fuel manifolds, the stability of both sides of the fuel manifold cannot be guaranteed to be consistent during brazing. As a result, the joint position is inaccurate and the fitting clearance is uneven during the brazing process, thereby reducing the brazing quality and efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a fixture for brazing a fuel manifold, which can clamp both sides of the fuel manifold through a second clamping plate and a third clamping plate, and cooperate with the clamping plate and the first clamping plate to clamp one end of the fuel manifold. In this way, the U-shaped fuel manifold can be clamped at multiple locations, further improving the stability of both sides of the fuel manifold, ensuring consistency, and improving the quality of brazing.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fixture for brazing a fuel manifold, comprising a driving mechanism located on a workbench, the driving mechanism comprising an electric track mounted on the workbench and an electric slide sliding on the electric track, a first clamping mechanism for clamping the outer side of one end of the fuel manifold being mounted at one end of the electric track, a second clamping mechanism for clamping the inner side of one end of the fuel manifold being mounted on the electric slide, a third clamping mechanism for clamping both sides of the fuel manifold being mounted on the electric slide, the third clamping mechanism comprising an inspection platform that moves following the electric slide, a second clamping disk and a third clamping disk for clamping the inner and outer sides of both sides of the fuel manifold being rotated on the inspection platform; the second clamping mechanism is provided with a detection mechanism for cooperating with the second clamping disk and the third clamping disk to pre-detect the quality of the fuel manifold.

[0006] Preferably, a bracket is fixedly mounted on the electric skateboard.

[0007] Preferably, the first clamping mechanism includes a first support mounted on one end of the electric track, and a clamping plate is detachably mounted on the first support.

[0008] Preferably, a first base is fixed to the bottom of the electric skateboard, a plug-in rack is plugged into the first base, a retractable telescopic rack is installed on the plug-in rack, a first clamping plate is fixed to one end of the telescopic rack, and penetrating tubes for penetrating the fuel main pipe are installed at both ends of the top of the plug-in rack.

[0009] Preferably, a second base is movably mounted on one side of the first base, a pillar is fixed on the second base, the first clamping plate is detachably mounted on the pillar, and a placement platform for placing the fuel main pipe is mounted on the pillar.

[0010] Preferably, the detection platform is fixedly mounted on one side of the bracket, a clamping block is provided on the top of the second clamping disk, a slider is rotatably provided on the top of the third clamping disk, a sliding groove for the sliding slider is provided on the detection platform, a fixed block is fixed on the top of the slider, a clamping rod is fixed on one side of the fixed block, one end of the clamping rod is C-shaped, and one end of the clamping rod is located on the outside of the clamping block, and a moving rod is fixed on one side of the slider.

[0011] Preferably, a piston rod is fixed on the second base, one end of the piston rod is sleeved with a piston cylinder, the piston cylinder is fixed on the first base, and the piston cylinder is connected to a first ventilation pipe.

[0012] Preferably, one end of the first ventilation pipe extends to the interior of the detection table, and a sealing pipe connected to the first ventilation pipe is installed inside the slide groove, one end of the moving rod slides inside the sealing pipe, and a one-way valve is provided on the sealing pipe.

[0013] Preferably, one end of the first ventilation pipe is also connected to the second ventilation pipe, and one end of the second ventilation pipe is connected to the heat-insulating airbag, and the heat-insulating airbag is installed on the through-tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention utilizes that the two sides of the fuel manifold are respectively located in the middle position of the second clamping plate and the third clamping plate, and the second clamping plate and the third clamping plate will fit with the inner and outer sides of the two sides of the fuel manifold; thus, the second clamping plate and the third clamping plate can clamp the two sides of the fuel manifold, and cooperate with the clamping plate and the first clamping plate to clamp one end of the fuel manifold, thereby clamping the U-shaped fuel manifold at multiple locations, further improving the stability of the two sides of the fuel manifold, ensuring consistency, and improving the quality of brazing.

[0016] The present invention utilizes the pressure of the internal seal of the piston cylinder to drive the piston rod to move, so that the piston rod pushes the second base to move, and the second base thereby drives the pillar to move. After the first clamping disk and the clamping plate clamp one end of the fuel main pipe, the electric slide continues to drive the first base to move. At this time, the electric slide drives the detection table to move through the bracket, so that the detection table and the placement table move relative to each other. At this time, the placement table and the fuel main pipe located on the placement table no longer move. When the detection table moves, the second clamping disk and the third clamping disk will move along the inner and outer sides of both sides of the fuel main pipe while rotating. Therefore, while the second clamping disk and the third clamping disk move along the inner and outer sides of both sides of the fuel main pipe, the third clamping disk can be used to detect the inner side of the fuel main pipe, so as to avoid depression or bulge of the inner side of both sides of the fuel main pipe affecting the brazing quality of the fuel main pipe.

[0017] In the present invention, during the relative sliding between the testing table and the placing table, the first base drives the piston cylinder to move, while the piston rod on the second base remains stationary. At this time, the piston rod squeezes the gas inside the piston cylinder into the interior of the sealing tube through the first vent pipe. The gas inside the sealing tube pushes the moving rod to move, and the moving rod pushes the sliding movement. The slider pushes the third clamping plate, so that the third clamping plate is always in contact with the inner side of the fuel main pipe. At the same time, the internal pressure of the sealing tube drives the third clamping plate to squeeze the inner side of the fuel main pipe. A certain pressure test can be performed on the inner side of the fuel main pipe, thereby further improving the quality of the fuel main pipe before brazing and improving the quality of the fuel main pipe brazing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a partial structural schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of a partial structure of the present invention;

[0022] Figure 5 This is the second schematic diagram of the partial structure of the present invention;

[0023] Figure 6 This is a partial cross-sectional view of the present invention;

[0024] Figure 7 This is the second partial cross-sectional view of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged view of part A;

[0026] Figure 9This is a partial cross-sectional view of the present invention;

[0027] Figure 10 This is the second partial cross-sectional view of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure of the fuel manifold clamping portion of the present invention;

[0029] Figure 12 This is the second structural schematic diagram of the fuel main pipe clamping part of the present invention.

[0030] In the figure: 1. driving mechanism; 11. electric track; 12. electric skateboard; 13. bracket; 2. first clamping mechanism; 21. first support; 22. clamping plate; 3. second clamping mechanism; 31. placing table; 32. first clamping disk; 33. telescopic frame; 34. plug-in frame; 35. through-tube; 36. first base; 37. second base; 38. pillar; 4. third clamping mechanism; 41. testing table; 42. second clamping disk; 43. third clamping disk; 44. clamping block; 45. clamping rod; 46. fixing block; 47. moving rod; 5. testing mechanism; 51. piston rod; 52. piston cylinder; 53. first ventilation pipe; 54. sealing pipe; 55. second ventilation pipe; 56. thermal insulation airbag. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0032] The present invention provides a fixture for brazing a fuel manifold, comprising a driving mechanism 1 located on a workbench, the driving mechanism 1 comprising an electric track 11 mounted on the workbench and an electric slide 12 sliding on the electric track 11, one end of the electric track 11 being mounted with a first clamping mechanism 2 for clamping the outer side of one end of the fuel manifold, the electric slide 12 being mounted with a second clamping mechanism 3 for cooperating with the first clamping mechanism 2 to clamp the inner side of one end of the fuel manifold, a bracket 13 being fixedly mounted on the electric slide 12, the first clamping mechanism 2 comprising a first support 21 mounted at one end of the electric track 11, the first support 21 A clamping plate 22 is detachably mounted on the upper portion, a first base 36 is fixed to the bottom of the electric skateboard 12, a plug-in rack 34 is plugged into the first base 36, a retractable telescopic rack 33 is mounted on the plug-in rack 34, a first clamping disc 32 is fixed to one end of the telescopic rack 33, and a through-tube 35 for passing through the fuel manifold is mounted on both ends of the top of the plug-in rack 34, a second base 37 is movably mounted on one side of the first base 36, a support 38 is fixed to the second base 37, the first clamping disc 32 is detachably mounted on the support 38, and a placement platform 31 for placing the fuel manifold is mounted on the support 38;

[0033] See Figures 1 to 5 as well as Figure 11 and Figure 12 As shown, when brazing the fuel manifold, the fuel manifold is placed on the placement table 31, and the inner side of one end of the fuel manifold is attached to the first clamping plate 32. Then, power is applied to drive the electric slide 12 to slide on the electric rail 11, and the electric slide 12 drives the bracket 13 to move. At the same time, the electric slide 12 drives the first base 36 to move, the first base 36 drives the second base 37 to move, the second base 37 drives the support 38 to move, and the support 38 drives the first clamping plate 32 to move, so that the first clamping plate 32 drives the fuel manifold to move, so that the fuel manifold is close to the clamping plate 22, and finally the inner and outer sides of one end of the fuel manifold are squeezed by the first clamping plate 32 and the clamping plate 22 respectively, thereby quickly clamping one end of the fuel manifold. In addition, the sizes of the clamping plate 22 and the first clamping plate 32 can be adjusted according to the size of the fuel manifold, thereby coping with fuel manifolds of different sizes and improving its clamping flexibility.

[0034] The electric slide 12 is provided with a third clamping mechanism 4 for clamping both sides of the fuel manifold. The third clamping mechanism 4 includes a detection platform 41 that moves with the electric slide 12. A second clamping plate 42 and a third clamping plate 43 are rotatably mounted on the detection platform 41 for clamping the inner and outer sides of both sides of the fuel manifold. The detection platform 41 is fixedly mounted on one side of the bracket 13. A clamping block 44 is provided on the top of the second clamping plate 42. A slider is rotatably mounted on the top of the third clamping plate 43. A sliding groove for sliding the slider is provided on the detection platform 41. A fixed block 46 is fixed on the top of the slider. A connecting rod 45 is fixed to one side of the fixed block 46. One end of the connecting rod 45 is C-shaped and is located on the outside of the clamping block 44. A moving rod 47 is fixed to one side of the slider.

[0035] See Figures 3 to 10 As shown, after the fuel manifold is placed on the placement table 31, the two sides of the fuel manifold are respectively located in the middle position of the second clamping plate 42 and the third clamping plate 43. In the process of the fuel manifold following the movement of the electric skateboard 12, the second clamping plate 42 and the third clamping plate 43 will fit with the inner and outer sides of both sides of the fuel manifold; thereby, the second clamping plate 42 and the third clamping plate 43 can clamp both sides of the fuel manifold, and cooperate with the clamping plate 22 and the first clamping plate 32 to clamp one end of the fuel manifold, thereby clamping the U-shaped fuel manifold in multiple places, further improving the stability of both sides of the fuel manifold, ensuring consistency, and improving the quality of brazing.

[0036] The second clamping mechanism 3 is provided with a detection mechanism 5 for pre-detecting the quality of the fuel main pipe in cooperation with the second clamping plate 42 and the third clamping plate 43; a piston rod 51 is fixed to the second base 37, one end of the piston rod 51 is sleeved with a piston cylinder 52, the piston cylinder 52 is fixed to the first base 36, and the piston cylinder 52 is connected to a first ventilation pipe 53, one end of the first ventilation pipe 53 extends to the interior of the inspection platform 41, and a sealing pipe 54 connected to the first ventilation pipe 53 is installed inside the slide groove, one end of the moving rod 47 slides inside the sealing pipe 54, and a one-way valve is provided on the sealing pipe 54, one end of the first ventilation pipe 53 is also connected to the second ventilation pipe 55, one end of the second ventilation pipe 55 is connected to an insulating airbag 56, and the insulating airbag 56 is installed on the through-tube 35;

[0037] See Figures 4 to 8As shown, when the first base 36 moves, the first base 36 drives the piston cylinder 52 to move. Since one end of the piston rod 51 is inside the piston cylinder 52 and the interior is sealed, when the piston cylinder 52 moves, the pressure of the internal seal of the piston cylinder 52 is used to drive the piston rod 51 to move, so that the piston rod 51 pushes the second base 37 to move, and the second base 37 drives the support 38 to move. After the first clamping disk 32 and the clamping plate 22 clamp one end of the fuel main pipe, the electric slide 12 continues to drive the first base 36 to move. At this time, the electric slide 12 drives the detection platform 41 to move through the bracket 13, so that the detection platform 41 and the placement platform 31 move relative to each other. At this time, the placement platform 31 and The fuel manifold located on the placement table 31 no longer moves. When the inspection table 41 moves, the second clamping plate 42 and the third clamping plate 43 will move along the inner and outer sides of both sides of the fuel manifold while rotating. Therefore, while the second clamping plate 42 and the third clamping plate 43 move along the inner and outer sides of both sides of the fuel manifold, the third clamping plate 43 can be used to inspect the inner side of the fuel manifold to prevent the inner sides of both sides of the fuel manifold from being concave or convex and affecting the brazing quality of the fuel manifold; once the inner sides of both sides of the fuel manifold are concave or convex, the third clamping plate 43 will change with the position of the concave or convex, and the third clamping plate 43 will move inside the slide groove through the slider above, see Figure 8 As shown, at this time, the slider drives the clamping rod 45 to move through the fixed block 46, and one end of the clamping rod 45 will be clamped with the clamping block 44 above the second clamping plate 42, so that the second clamping plate 42 cannot rotate. Therefore, the staff can observe the rotation state of the second clamping plate 42 or the movement range of the clamping rod 45 to intuitively judge the quality of the inner side of the fuel manifold, and the outer side of the fuel manifold can be judged by the naked eye of the staff; thereby, by utilizing the cooperation of the second clamping plate 42 and the third clamping plate 43, the quality of the fuel manifold can be automatically inspected during the process of quickly clamping the fuel manifold, thereby further improving the brazing quality of the fuel manifold.

[0038] Working principle: When brazing the fuel manifold, place the fuel manifold on the placement table 31, and at the same time, fit the inner side of one end of the fuel manifold against the first clamping plate 32. Then, power is applied to drive the electric slide 12 to slide on the electric track 11. The electric slide 12 drives the bracket 13 to move. At the same time, the electric slide 12 drives the first base 36 to move. When the first base 36 moves, the first base 36 drives the piston cylinder 52 to move. Since one end of the piston rod 51 is inside the piston cylinder 52 and the interior is sealed, when the piston cylinder 52 moves, the pressure of the internal seal of the piston cylinder 52 is used to drive the piston rod 51 to move, so that the piston rod 51 pushes the second base 37 to move. The second base 37 thereby drives the support 38 to move, and the support 38 drives the first clamping plate 32 to move. The first clamping plate 32 drives the fuel manifold to move, bringing the fuel manifold close to the clamping plate 22, and ultimately causing the inner and outer sides of one end of the fuel manifold to be squeezed against the first clamping plate 32 and the clamping plate 22 respectively, thereby quickly clamping one end of the fuel manifold. In addition, the sizes of the clamping plate 22 and the first clamping plate 32 can be adjusted according to the size of the fuel manifold, thereby accommodating fuel manifolds of different sizes and improving their clamping flexibility. After the first clamping plate 32 and the clamping plate 22 clamp one end of the fuel manifold, the electric slide 12 continues to drive the first base 36 to move. At this time, the electric slide 12 drives the detection table 41 to move via the bracket 13, causing the detection table 41 and the placement table 31 to move relative to each other. At this time, the placement table 31 and the fuel manifold located on the placement table 31 no longer move.

[0039] After the fuel manifold is placed on the placement table 31, the two sides of the fuel manifold are located in the middle position of the second clamping plate 42 and the third clamping plate 43 respectively. As the fuel manifold moves with the electric slide 12, the second clamping plate 42 and the third clamping plate 43 will be in contact with the inner and outer sides of the fuel manifold. In this way, the second clamping plate 42 and the third clamping plate 43 can clamp both sides of the fuel manifold, and cooperate with the clamping plate 22 and the first clamping plate 32 to clamp one end of the fuel manifold, thereby clamping the U-shaped fuel manifold at multiple locations.

[0040] When the inspection platform 41 moves, the second clamping plate 42 and the third clamping plate 43 will move along the inner and outer sides of both sides of the fuel manifold while rotating. Therefore, while the second clamping plate 42 and the third clamping plate 43 move along the inner and outer sides of both sides of the fuel manifold, the third clamping plate 43 can be used to inspect the inner side of the fuel manifold to prevent the inner sides of both sides of the fuel manifold from being concave or convex and affecting the brazing quality of the fuel manifold; once the inner sides of both sides of the fuel manifold are concave or convex, the third clamping plate 43 will change with the position of the concave or convex, and the third clamping plate 43 will move inside the slide groove through the slider above, see Figure 8As shown, at this time, the slider drives the clamping rod 45 to move through the fixed block 46, and one end of the clamping rod 45 will be clamped with the clamping block 44 above the second clamping plate 42, so that the second clamping plate 42 cannot rotate. Therefore, the staff can observe the rotation state of the second clamping plate 42 or the movement range of the clamping rod 45 to intuitively judge the quality of the inner side of the fuel manifold, and the outer side of the fuel manifold can be judged by the naked eye.

[0041] In addition, during the relative sliding of the testing platform 41 and the placing platform 31, the first base 36 drives the piston cylinder 52 to move, while the piston rod 51 on the second base 37 is stationary. At this time, the piston rod 51 squeezes the gas inside the piston cylinder 52 into the interior of the sealing tube 54 through the first vent pipe 53. The gas inside the sealing tube 54 pushes the moving rod 47 to move. The moving rod 47 pushes the sliding movement, and the slider pushes the third clamping plate 43, so that the third clamping plate 43 always fits the inner side of the fuel manifold. At the same time, the internal pressure of the sealing tube 54 drives the third clamping plate 43 to squeeze the inner side of the fuel manifold, so that a certain pressure test can be performed on the inner side of the fuel manifold, further improving the quality of the fuel manifold before brazing.

[0042] In addition, part of the gas inside the first ventilation pipe 53 is squeezed into the inside of the second ventilation pipe 55, and the gas inside the second ventilation pipe 55 enters the inside of the thermal insulation airbag 56 to expand the thermal insulation airbag 56. Since the plug-in frame 34 moves with the first base 36, the through tube 35 on the plug-in frame 34 will be sleeved on the fuel main pipe. At this time, the thermal insulation airbag 56 expands to wrap the fuel main pipe, which can divide the brazing position of the fuel main pipe and reduce the influence of heat diffusion from the brazing position on the non-brazed area.

[0043] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for brazing a fuel main pipe, comprising a driving mechanism (1) located on a workbench, characterized in that: The driving mechanism (1) includes an electric track (11) mounted on a workbench and an electric slide (12) sliding on the electric track (11); a first clamping mechanism (2) for clamping the outer side of one end of the fuel main pipe is mounted on one end of the electric track (11); a second clamping mechanism (3) for cooperating with the first clamping mechanism (2) to clamp the inner side of one end of the fuel main pipe is mounted on the electric slide (12); a third clamping mechanism (4) for clamping both sides of the fuel main pipe is mounted on the electric slide (12); the third clamping mechanism (4) includes a detection table (41) moving with the electric slide (12); a second clamping disk (42) and a third clamping disk (43) for clamping the inner and outer sides of both sides of the fuel main pipe are rotatably mounted on the detection table (41); The second clamping mechanism (3) is provided with a detection mechanism (5) for pre-detecting the quality of the fuel main pipe in cooperation with the second clamping disc (42) and the third clamping disc (43); A first base (36) is fixed to the bottom of the electric skateboard (12), a plug-in frame (34) is plugged into the first base (36), a retractable telescopic frame (33) is mounted on the plug-in frame (34), a first clamping plate (32) is fixed to one end of the telescopic frame (33), and a through-tube (35) for penetrating a fuel main pipe is mounted on both ends of the top of the plug-in frame (34); A second base (37) is movably mounted on one side of the first base (36), a support (38) is fixed on the second base (37), the first clamping plate (32) is detachably mounted on the support (38), and a placement platform (31) for placing a fuel main pipe is mounted on the support (38), and the fuel main pipe is U-shaped.

2. A fuel manifold brazing fixture according to claim 1, characterized in that: A bracket (13) is fixedly mounted on the electric skateboard (12).

3. A fuel manifold brazing fixture according to claim 1, characterized in that: The first clamping mechanism (2) comprises a first support (21) mounted on one end of the electric track (11), and a clamping plate (22) is detachably mounted on the first support (21).

4. A fuel manifold brazing fixture according to claim 2, characterized in that: The detection platform (41) is fixedly mounted on one side of the bracket (13); a clamping block (44) is provided on the top of the second clamping disk (42); a slider is rotatably provided on the top of the third clamping disk (43); a sliding groove for the slider to slide is provided on the detection platform (41); a fixed block (46) is fixed on the top of the slider; a clamping rod (45) is fixed on one side of the fixed block (46); one end of the clamping rod (45) is C-shaped, and one end of the clamping rod (45) is located outside the clamping block (44); and a moving rod (47) is fixed on one side of the slider.

5. A fuel manifold brazing fixture according to claim 4, characterized in that: A piston rod (51) is fixed on the second base (37), one end of the piston rod (51) is sleeved with a piston cylinder (52), the piston cylinder (52) is fixed on the first base (36), and the piston cylinder (52) is connected to a first ventilation pipe (53).

6. A fuel manifold brazing fixture according to claim 5, characterized in that: One end of the first ventilation pipe (53) extends to the interior of the detection table (41), and a sealing pipe (54) connected to the first ventilation pipe (53) is installed inside the slide groove. One end of the moving rod (47) slides inside the sealing pipe (54), and a one-way valve is provided on the sealing pipe (54).

7. A fuel manifold brazing fixture according to claim 6, characterized in that: One end of the first ventilation pipe (53) is also connected to a second ventilation pipe (55), and one end of the second ventilation pipe (55) is connected to a heat-insulating airbag (56), and the heat-insulating airbag (56) is installed on the penetrating tube (35).

Images