PHEV oil filling pipe welding tool with inner surface protection function

Abstract

The utility model relates to a PHEV oil filling pipe welding tool with an inner surface protection function. The device is characterized by comprising a bottom plate, an oil filling pipe main pipeline storage seat assembly, an oil filling pipe air return pipe storage seat assembly, a tongue-shaped locker, a supporting seat assembly, an overflow valve, an air inlet pipe, a first plug, an air outlet pipe and a second plug, wherein the oil filling pipe main pipeline storage seat assembly and the oil filling pipe air return pipe storage seat assembly are arranged on the bottom plate; the supporting seat assembly is arranged on the bottom plate and matched with the tongue-shaped locker; the support assembly is tightly attached to the outer wall of the PHEV oil filling pipe main pipeline and the outer wall of the PHEV oil filling pipe air return pipe through matching of the tongue-shaped locker and the supporting seat assembly, one end of the PHEV oil filling pipe main pipeline is communicated with the air inlet pipe through a first plug, and the other end of the PHEV oil filling pipe main pipeline is communicated with the air outlet pipe through a second plug. The PHEV oil filling pipe main pipeline and the PHEV oil filling pipe air return pipe can be filled with inert protective gas through the cooperation of the air inlet pipe and the air outlet pipe, so that the bad influence of high temperature on the inner wall during welding is prevented, and the effect of improving the practical performance is achieved.

Description

Technical Field

[0001] This utility model relates to a welding fixture, specifically a welding fixture for PHEV refueling pipes with inner surface protection function. Background Technology

[0002] The PHEV refueling hose consists of a main pipe and a return pipe. One end of the return pipe is connected to and communicates with the main pipe. Multiple supports need to be welded between the main pipe and the return pipe. In actual welding projects, the supports are often simply placed on the outer walls of the main pipe and the return pipe, and then welded together with a welding torch. However, during welding, the inner wall lacks protection, and the high temperature can cause the inner wall to melt and deform, thus affecting the quality of the PHEV refueling hose. Therefore, in order to solve this problem, it is particularly important to design a PHEV refueling hose welding fixture with an inner surface protection function. Summary of the Invention

[0003] To address the aforementioned issues, this invention presents a welding fixture for PHEV refueling pipes with internal surface protection. By combining the inlet and outlet pipes, inert protective gas can be filled into the main PHEV refueling pipe and the return pipe, thereby preventing the high temperature during welding from adversely affecting the inner wall and enhancing practical performance.

[0004] To solve the above-mentioned technical problems, this utility model provides a welding fixture for PHEV refueling pipes with internal surface protection function. Its features include: a base plate, a main refueling pipe storage assembly and a refueling pipe return pipe storage assembly mounted on the base plate, a tongue-type locking device, a support assembly on the base plate matching the tongue-type locking device, an overflow valve, an air inlet pipe, a first plug, an air outlet pipe, and a second plug. The top of the main refueling pipe storage assembly has a first placement groove in which the PHEV refueling pipe main pipe is placed. The top of the refueling pipe return pipe storage assembly also has a second placement groove. The return air pipe is placed in the second placement slot. A sealing plug is detachably installed at the end of the PHEV refueling pipe return air pipe away from the PHEV refueling pipe main pipe. The bracket assembly is tightly attached to the outer wall of the PHEV refueling pipe main pipe and the PHEV refueling pipe return air pipe through the cooperation of the tongue-type locking device and the support base assembly. One end of the PHEV refueling pipe main pipe is connected to the air inlet pipe through the first plug. A first overflow valve is provided on the air inlet pipe. The other end of the PHEV refueling pipe main pipe is connected to the air outlet pipe through the second plug. A second overflow valve is provided on the air inlet pipe. Both the air inlet pipe and the air outlet pipe are connected to the inert protective gas storage tank.

[0005] Furthermore: The refueling pipe main pipeline storage seat assembly is composed of a first storage seat, a second storage seat, a third storage seat, a fourth storage seat, a fifth storage seat, a sixth storage seat, and a seventh storage seat arranged sequentially from left to right on the base plate. The first storage seat, the second storage seat, the third storage seat, the fourth storage seat, the fifth storage seat, the sixth storage seat, and the seventh storage seat are arranged in an arc shape on the base plate and each has a first placement groove on its top. The two ends of the PHEV refueling pipe main pipeline are respectively placed in the first placement grooves on the first storage seat and the seventh storage seat.

[0006] Furthermore: the refueling pipe return pipe storage seat assembly is composed of an eighth storage seat, a ninth storage seat, a tenth storage seat and an eleventh storage seat arranged sequentially from left to right on the base plate. The eighth storage seat, the ninth storage seat, the tenth storage seat and the eleventh storage seat are arranged in an arc on the base plate and each of them has a second placement groove on its top.

[0007] Furthermore: the support assembly consists of a first support, a second support, a third support, and a fourth support arranged sequentially from left to right on the base plate. The first support is located on the base plate on the side of the PHEV refueling pipe return pipe between the eighth and ninth storage seats. The second support is located on the base plate on the side of the PHEV refueling pipe return pipe between the third and fourth storage seats. The third support is located on the base plate on the side of the PHEV refueling pipe main pipe between the fourth and fifth storage seats. The fourth support is located on the base plate on the side of the PHEV refueling pipe main pipe between the fifth and sixth storage seats. Each of the first, second, third, and fourth support seats has a matching tongue-shaped locking device directly above it. The four connecting brackets between the PHEV refueling pipe main pipe and the PHEV refueling pipe return pipe are respectively clamped and fixed by the cooperation of the first, second, third, and fourth support seats with the tongue-shaped locking devices above them.

[0008] Furthermore, the base plate has mounting holes at all four corners for fixing.

[0009] With the above structure, this utility model can fill the main pipeline of PHEV refueling pipe and the return pipe of PHEV refueling pipe with inert protective gas through the cooperation of the inlet pipe and the outlet pipe, thereby preventing the high temperature during welding from causing adverse effects on the inner wall and increasing the practical performance; and this design has the advantages of simple structure, convenient use and high efficiency. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0012] like Figure 1 The illustrated PHEV refueling pipe welding fixture with internal surface protection includes a base plate 1, a refueling pipe main pipe storage assembly and a refueling pipe return pipe storage assembly mounted on the base plate, a tongue-type locking device 14, a support base assembly on the base plate that matches the tongue-type locking device, an overflow valve, an air inlet pipe 23, a first plug 24, an air outlet pipe 20, and a second plug 21. The top of the refueling pipe main pipe storage assembly has a first placement groove in which the PHEV refueling pipe main pipe is placed. The top of the refueling pipe return pipe storage assembly also has a second placement groove in which the PHEV refueling pipe return pipe is placed. A sealing plug is detachably installed at the end of the air pipe away from the PHEV refueling main pipe. The bracket assembly is tightly attached to the outer wall of the PHEV refueling main pipe and the PHEV refueling return pipe through the cooperation of the tongue-type locking device and the support base assembly. One end of the PHEV refueling main pipe is connected to the air inlet pipe through the first plug, and the air inlet pipe is equipped with a first overflow valve 22. The other end of the PHEV refueling main pipe is connected to the air outlet pipe through the second plug, and the air inlet pipe is equipped with a second overflow valve 19. Both the air inlet pipe and the air outlet pipe are connected to an inert protective gas storage tank. Mounting holes 1-1 for fixing are opened at the four corners of the base plate. This utility model, through the cooperation of the air inlet pipe and the air outlet pipe, can fill the PHEV refueling main pipe and the PHEV refueling return pipe with inert protective gas, thereby preventing the high temperature during welding from causing adverse effects on the inner wall, thus increasing the practical performance. Furthermore, this design has the advantages of simple structure, convenient use, and high efficiency.

[0013] like Figure 1 The fuel filler pipe main pipe storage assembly shown consists of a first storage seat 2, a second storage seat 3, a third storage seat 6, a fourth storage seat 7, a fifth storage seat 8, a sixth storage seat 9, and a seventh storage seat 12 arranged sequentially from left to right on the base plate. The first, second, third, fourth, fifth, sixth, and seventh storage seats are arranged in an arc shape on the base plate and each has a first placement groove on its top. The two ends of the PHEV fuel filler pipe main pipe are placed in the first placement grooves on the first and seventh storage seats, respectively.

[0014] like Figure 1The fuel filler pipe return pipe storage assembly shown consists of an eighth storage seat 4, a ninth storage seat 5, a tenth storage seat 10, and an eleventh storage seat 11 arranged sequentially from left to right on the base plate. The eighth, ninth, tenth, and eleventh storage seats are arranged in an arc shape on the base plate and each has a second placement slot on its top.

[0015] like Figure 1 The support assembly shown consists of a first support 25, a second support 26, a third support 16, and a fourth support 13 arranged sequentially from left to right on the base plate. The first support is located on the base plate on the side of the PHEV refueling pipe return pipe between the eighth and ninth storage seats. The second support is located on the base plate on the side of the PHEV refueling pipe return pipe between the third and fourth storage seats. The third support is located on the base plate on the side of the PHEV refueling pipe main pipe between the fourth and fifth storage seats. The fourth support is located on the base plate on the side of the PHEV refueling pipe main pipe between the fifth and sixth storage seats. Each of the first, second, third, and fourth support seats has a matching tongue-shaped locking device directly above it. The four connecting brackets between the PHEV refueling pipe main pipe and the PHEV refueling pipe return pipe are respectively clamped and fixed by the first, second, third, and fourth support seats and their tongue-shaped locking devices.

[0016] During operation, after the PHEV refueling main pipe and PHEV refueling return pipe are placed, the bracket assembly is attached to the outer wall of the PHEV refueling main pipe and PHEV refueling return pipe by using the tongue-type locking device and the support base assembly. The overflow valves at both ends are opened to fill the PHEV refueling main pipe and PHEV refueling return pipe with inert protective gas. Then the overflow valves at both ends are closed. At this time, welding is performed to fix the bracket assembly to the outer wall of the PHEV refueling main pipe and PHEV refueling return pipe.

[0017] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A welding fixture for a PHEV refueling pipe with internal surface protection, characterized in that: The assembly includes a base plate (1), a main refueling pipe storage seat assembly and a refueling pipe return pipe storage seat assembly mounted on the base plate, a tongue-type locking device (14), a support seat assembly mounted on the base plate that matches the tongue-type locking device, an overflow valve, an air inlet pipe (23), a first plug (24), an air outlet pipe (20), and a second plug (21). The top of the main refueling pipe storage seat assembly has a first placement groove, in which the PHEV main refueling pipe is placed. The top of the refueling pipe return pipe storage seat assembly also has a second placement groove, in which the PHEV refueling pipe return pipe is placed. A sealing plug is detachably installed at the end of the refueling pipe return pipe away from the PHEV refueling pipe main pipe. The bracket assembly is tightly attached to the outer wall of the PHEV refueling pipe main pipe and the PHEV refueling pipe return pipe through the cooperation of the tongue-type locking device and the support base assembly. One end of the PHEV refueling pipe main pipe is connected to the air inlet pipe through the first plug. The air inlet pipe is equipped with a first overflow valve (22). The other end of the PHEV refueling pipe main pipe is connected to the air outlet pipe through the second plug. The air inlet pipe is equipped with a second overflow valve (19). Both the air inlet pipe and the air outlet pipe are connected to the inert protective gas storage tank.

2. The welding fixture for a PHEV refueling pipe with internal surface protection function according to claim 1, characterized in that: The refueling pipe main pipeline storage seat assembly consists of a first storage seat (2), a second storage seat (3), a third storage seat (6), a fourth storage seat (7), a fifth storage seat (8), a sixth storage seat (9), and a seventh storage seat (12) arranged sequentially from left to right on the base plate. The first, second, third, fourth, fifth, sixth, and seventh storage seats are arranged in an arc shape on the base plate and each has a first placement groove on its top. The two ends of the PHEV refueling pipe main pipeline are placed in the first placement grooves on the first and seventh storage seats, respectively.

3. The welding fixture for a PHEV refueling pipe with internal surface protection function according to claim 2, characterized in that: The refueling pipe return pipe storage seat assembly consists of an eighth storage seat (4), a ninth storage seat (5), a tenth storage seat (10), and an eleventh storage seat (11) arranged sequentially from left to right on the base plate. The eighth, ninth, tenth, and eleventh storage seats are arranged in an arc shape on the base plate and each has a second placement groove on its top.

4. The welding fixture for a PHEV refueling pipe with internal surface protection function according to claim 3, characterized in that: The support assembly consists of a first support (25), a second support (26), a third support (16), and a fourth support (13) arranged sequentially from left to right on the base plate. The first support is arranged on the base plate on the side of the PHEV refueling pipe return pipe between the eighth and ninth storage seats. The second support is arranged on the base plate on the side of the PHEV refueling pipe return pipe between the third and fourth storage seats. The third support is arranged on the base plate on the side of the PHEV refueling pipe main pipe between the fourth and fifth storage seats. The fourth support is arranged on the base plate on the side of the PHEV refueling pipe main pipe between the fifth and sixth storage seats. Each of the first, second, third, and fourth support seats has a matching tongue-shaped locking device above it. The four connecting brackets between the PHEV refueling pipe main pipe and the PHEV refueling pipe return pipe are clamped and fixed by the first, second, third, and fourth support seats and the tongue-shaped locking devices above them.

5. The welding fixture for a PHEV refueling pipe with internal surface protection function according to claim 1, characterized in that: The base plate has mounting holes (1-1) at each of its four corners for fixing.

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