Welding tool for intake pipe and exhaust pipe of range-extended engine silencer

Abstract

In order to solve the problems of high labor intensity, low efficiency, difficulty in ensuring that the angle and the position of a tail end flange meet the design requirements and the like of a welding method for an air inlet pipe and an air outlet pipe of a range-extended engine silencer in the prior art, the utility model provides a welding tool for the air inlet pipe and the air outlet pipe of the range-extended engine silencer. A base plate, a cylinder body, a pressure applying mechanism, an air inlet pipe and an exhaust pipe are positioned; the base plate is a rectangular plate, and a barrel positioning part, a pressure applying mechanism, an air inlet pipe positioning part and an exhaust pipe positioning part are fixedly arranged on the base plate; the cylinder body is positioned and arranged in the middle of the base plate; the two pressure applying mechanisms are fixed on the positioned rear side of the barrel body at an interval; the air inlet pipes are positioned on the left side, the right side and the front side of the cylinder body; the exhaust pipe positioning device comprises a supporting column and a positioning pin. The air inlet and exhaust pipe clamping device has the advantages that the air inlet and exhaust pipe can be clamped and fixed to the welding position of the silencer barrel of the extended-range engine at a time according to set requirements; moreover, the operation is simple, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to a welding technology for the intake and exhaust pipes of an extended-range engine muffler, and particularly to a welding tooling for the intake and exhaust pipes of an extended-range engine muffler. Background Art

[0002] The main body of the extended-range engine muffler is of a cylindrical structure, so it is also often called the muffler cylinder body. An air inlet hole is provided at one end of the cylinder body, and air outlet holes are provided radially on the cylinder body. And, annular protrusions are provided at both ends of the cylinder body. To facilitate the connection of the muffler with the intake end and the exhaust end, generally, an intake pipe needs to be welded at the air inlet of the muffler cylinder body, and an exhaust pipe needs to be welded at the air outlet. The intake pipe of the extended-range engine muffler is a welded assembly, including a front end elbow, a middle straight pipe and a terminal flange; the front end elbow is a 360-degree elbow, one end of which is welded to the air inlet at the end of the cylinder body (usually called the welding end of the front end elbow), and the other end is connected to the middle straight pipe; the other end of the middle straight pipe is connected to the flange through a section of arc elbow. During welding, in addition to requiring the welding end of the front end elbow to be coaxial with the air inlet, it is also required that the terminal flange be placed at a set angle at a set position. The exhaust pipe of the extended-range engine muffler is a circular straight pipe, and a positioning hole is provided radially at the outer end of the circular straight pipe; during welding, in addition to requiring the exhaust pipe to be coaxial with the exhaust hole, it is also required that the axis of the positioning hole be perpendicular to the axis of the cylinder body (see attached Figure 1 、 2 , in the figure, a is the muffler cylinder body, b is the intake pipe, and c is the exhaust pipe). The existing welding method for the intake and exhaust pipes of the extended-range engine muffler uses a simple fixture to fix the welding end of the front end elbow of the intake pipe at the air inlet of the cylinder body for welding, and then uses a simple fixture to fix the exhaust pipe at the air outlet of the cylinder body for welding; this method of clamping and fixing for welding twice not only has a large labor intensity and low efficiency, but also it is very difficult to ensure that the angle and position of the terminal flange of the intake pipe, and the position of the positioning hole of the exhaust pipe meet the design requirements.

[0003] Obviously, the existing welding method for the intake and exhaust pipes of the extended-range engine muffler has problems such as large labor intensity, low efficiency, and it is very difficult to ensure that the angle and position of the terminal flange of the intake pipe, and the position of the positioning hole of the exhaust pipe meet the design requirements. Summary of the Invention

[0004] In order to solve the problems existing in the existing welding method for the intake and exhaust pipes of the extended-range engine muffler, such as large labor intensity, low efficiency, and it is difficult to ensure that the angle and position of the terminal flange of the intake pipe, and the position of the positioning hole of the exhaust pipe meet the design requirements, the utility model provides a welding tooling for the intake and exhaust pipes of the extended-range engine muffler.

[0005] The welding tooling for the intake and exhaust pipes of the range extender engine muffler of the utility model includes a base plate, a cylinder positioning mechanism, a pressing mechanism, an intake pipe positioning mechanism, and an exhaust pipe positioning mechanism. The base plate is a rectangular plate, on which the cylinder positioning mechanism, the pressing mechanism, the intake pipe positioning mechanism, and the exhaust pipe positioning mechanism are fixedly arranged. The cylinder positioning mechanism is arranged in the middle of the base plate and includes a middle support and end supports. The middle support is a rectangular plate with an arc-shaped upper end and there are two such plates, which are fixedly arranged at intervals in the middle of the base plate. The radius of the arc of the middle support is the same as the radius of the cylinder. The end supports are rectangular plates with an arc-shaped stepped upper end and there are two such plates, which are fixed on both sides of the middle support. The radius of the large arc-shaped step of the end support is the same as the radius of the protrusion at the end of the cylinder, and the distance between the small arc-shaped steps of the end support is the same as the length of the cylinder. Moreover, the axis of the arc of the middle support is coaxial with the axis of the large arc-shaped step of the end support and both are in a horizontal position. The pressing mechanism has two parts, which are fixedly arranged at intervals at the rear side of the cylinder positioning mechanism, and when the pressing mechanism is in the pressing state, the bottom surface of the pressing head just contacts the upper surface of the muffler cylinder placed on the cylinder positioning mechanism. The intake pipe positioning mechanism is arranged on the left, right, and front sides of the cylinder positioning mechanism and includes a front bent pipe support, a middle straight pipe support, and a rear flange support. The front bent pipe support is a long cuboid shape and is vertically fixed on the left side of the cylinder positioning mechanism. An arc-shaped groove matching the front bent pipe of the intake pipe is arranged on the upper surface of the front bent pipe support. The setting position and height of the front bent pipe support are such that after the front bent pipe of the intake pipe is placed in the arc-shaped groove, the welding end of the front bent pipe just enters the set length of the air inlet of the cylinder and is coaxial with the air inlet. The middle straight pipe support is a long cuboid shape and there are two such supports, which are vertically and fixedly arranged at intervals on the front side of the cylinder positioning mechanism. An arc-shaped groove matching the middle straight pipe of the intake pipe is arranged on the upper surface of the middle straight pipe support. The setting position and height of the middle straight pipe support are such that after the middle straight pipe of the intake pipe is placed in the arc-shaped groove, the middle straight pipe of the intake pipe is in the set position. The rear flange support is a cuboid shape and is fixed on the right side of the cylinder positioning mechanism. An inclined surface is arranged on the upper surface of the rear flange support, and positioning columns with the same diameter and interval as the through holes at both ends of the flange are arranged on the inclined surface. The setting position and height of the rear flange support are such that after the rear flange of the intake pipe is placed on the inclined surface and the through holes at both ends of the flange are sleeved on the positioning columns, the rear flange is in the set position. The exhaust pipe positioning mechanism includes a support column and a positioning pin. The support column is a long cuboid shape and is vertically fixed between the two pressing mechanisms at the rear side of the cylinder positioning mechanism. A through hole with the same diameter as the outer diameter of the intake pipe is horizontally arranged at the upper end of the support column, and a positioning pin hole is radially arranged above the through hole of the support column. The positioning pin is a stepped cylinder, and the diameter of its small head is the same as the diameter of the positioning pin hole of the support column and the positioning hole on the exhaust pipe. The setting position and height of the support column are such that after the exhaust pipe is inserted into the through hole, the intake pipe is coaxial with the air inlet of the muffler cylinder and the length of the intake pipe entering the air inlet meets the set requirements.Moreover, the axis of the positioning pin hole on the support column is coaxial with the intake pipe positioning hole after the intake pipe is placed in the set position and perpendicular to the axis of the muffler cylinder body.

[0006] Furthermore, the pressing mechanism includes a base, a hinge seat, a T-shaped pressing rod, a rocker, a connecting rod, and a pressing head; the base is a cuboid, the hinge seat is fixed on the upper surface of the base, and hinge holes are provided at both the front and rear ends of the hinge seat; the bottom of the vertical side of the T-shaped pressing rod is hinged to the hinge hole at the front end of the hinge seat, a pressing head is provided on the front side of the horizontal side of the T-shaped pressing rod, and a hinge hole is provided on the rear side of the horizontal side of the T-shaped pressing rod; the rocker is long strip-shaped, two hinge holes are provided at the front section of the rocker, the hinge hole at its end is hinged to the rear side of the horizontal side of the T-shaped pressing rod, and the hinge hole in the middle of it is hinged to one end of the connecting rod; the other end of the connecting rod is hinged to the rear end of the hinge seat.

[0007] Furthermore, the pressing head is a rectangular plate with a V-shaped opening at the lower part, and is perpendicularly hinged to the connecting column below the front side of the horizontal side of the T-shaped pressing rod with respect to the axis of the muffler cylinder body.

[0008] Furthermore, the connecting column below the front side of the horizontal side of the T-shaped pressing rod is fixed below the front side of the horizontal side of the T-shaped pressing rod through the slot hole and bolt at the front section of the horizontal side of the T-shaped pressing rod.

[0009] The beneficial technical effect of the intake and exhaust pipe welding tooling for the range-extended engine muffler of the present utility model is that it can clamp and fix the intake and exhaust pipes at the welding position of the range-extended engine muffler cylinder body at one time according to the set requirements; moreover, the operation is simple and the efficiency is high. Description of the Drawings

[0010] Attached Figure 1 is a three-dimensional schematic diagram before and after welding of the range-extended engine muffler;

[0011] Attached Figure 2 is a three-dimensional schematic diagram of another angle after welding of the range-extended engine muffler;

[0012] Attached Figure 3 is a three-dimensional schematic diagram of the intake and exhaust pipe welding tooling for the range-extended engine muffler of the present utility model;

[0013] Attached Figure 4 is a three-dimensional schematic diagram of the cylinder body positioning of the present utility model;

[0014] Attached Figure 5 is a three-dimensional schematic diagram of the pressing mechanism of the present utility model;

[0015] Attached Figure 6 is a three-dimensional schematic diagram of the intake pipe positioning and exhaust pipe positioning of the present utility model;

[0016] Attached Figure 7 is a three-dimensional schematic diagram of the clamping and fixing state of the present utility model;

[0017] Attached Figure 8 is a three-dimensional schematic diagram of another angle of the clamping and fixing state of the present utility model;

[0018] Attached Figure 9 is a three-dimensional schematic diagram of the positioning, clamping and fixing state of the exhaust pipe of the present utility model.

[0019] In the figure, 1 is the substrate, 2 is the cylinder positioning, 2-1 is the middle support, 2-2 is the end support, 3 is the pressing mechanism, 3-1 is the base, 3-2 is the hinge seat, 3-3 is the T-shaped pressing rod, 3-4 is the rocker, 3-5 is the connecting rod, 3-6 is the pressing head, 4 is the intake pipe positioning, 4-1 is the front elbow support, 4-2 is the middle straight pipe support, 4-3 is the end flange support, 5 is the exhaust pipe positioning, 5-1 is the support column, 5-2 is the positioning pin, a is the muffler cylinder, b is the intake pipe, and c is the exhaust pipe.

[0020] The welding tooling for the intake and exhaust pipes of the range-extended engine muffler of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Specific Embodiments

[0021] Refer to Attached Figure 3 、 4, 6, 7, 8, 9, the present utility model is an exhaust pipe welding tooling for an extended-range engine muffler, including a base plate 1, a cylinder positioning member 2, a pressing mechanism 3, an intake pipe positioning member 4 and an exhaust pipe positioning member 5; the base plate is a rectangular plate, on which the cylinder positioning member, the pressing mechanism, the intake pipe positioning member and the exhaust pipe positioning member are fixedly arranged; the cylinder positioning member is arranged in the middle of the base plate, including a middle support 2-1 and an end support 2-2; the middle support is a rectangular plate with an arc-shaped upper end and there are two such plates, which are fixedly arranged at intervals in the middle of the base plate; the radius of the arc of the middle support is the same as the radius of the cylinder; the end support is a rectangular plate with an arc-shaped step at the upper end and there are two such plates, which are fixed on both sides of the middle support; the radius of the large arc-shaped step of the end support is the same as the radius of the protrusion at the end of the cylinder, and the distance between the small arc-shaped steps of the end support is the same as the length of the cylinder; and, the axis of the arc of the middle support is coaxial with the axis of the large arc-shaped step of the end support, and both are in a horizontal position; the pressing mechanism has two members, which are fixedly arranged at intervals at the rear side of the cylinder positioning member, and when the pressing mechanism is in the pressing state, the bottom surface of the pressing head just contacts the upper surface of the muffler cylinder placed on the cylinder positioning member; the intake pipe positioning member is arranged on the left, right and front sides of the cylinder positioning member, including a front end elbow support 4-1, a middle straight pipe support 4-2 and a rear end flange support 4-3; the front end elbow support is a long cuboid shape, which is vertically fixed on the left side of the cylinder positioning member, and an arc-shaped groove matching the front end elbow of the intake pipe is arranged on the upper surface of the front end elbow support; the setting position and height of the front end elbow support are such that after the front end elbow of the intake pipe is placed in the arc-shaped groove, the welding end of the front end elbow just enters the set length of the intake port of the cylinder and is coaxial with the intake port; the middle straight pipe support is a long cuboid shape and there are two such members, which are vertically fixed at intervals on the front side of the cylinder positioning member, and an arc-shaped groove matching the middle straight pipe of the intake pipe is arranged on the upper surface of the middle straight pipe support; the setting position and height of the middle straight pipe support are such that after the middle straight pipe of the intake pipe is placed in the arc-shaped groove, the middle straight pipe of the intake pipe is in the set position; the rear end flange support is a cuboid shape, which is fixed on the right side of the cylinder positioning member, and an inclined surface is arranged on the upper surface of the rear end flange support, and positioning columns with the same diameter and interval as the through holes at both ends of the flange are arranged on the inclined surface; the setting position and height of the rear end flange support are such that after the rear end flange of the intake pipe is placed on the inclined surface and the through holes at both ends of the flange are sleeved on the positioning columns, the rear end flange is in the set position; the exhaust pipe positioning member includes a support column 5-1 and a positioning pin 5-2; the support column is a long cuboid shape, which is vertically fixed between the two pressing mechanisms at the rear side of the cylinder positioning member, a through hole with the same diameter as the outer diameter of the intake pipe is horizontally arranged at the upper end of the support column, and a positioning pin hole is radially arranged above the through hole of the support column; the positioning pin is a stepped cylinder, and the diameter of its small head is the same as the diameter of the positioning pin hole of the support column and the positioning hole on the exhaust pipe.The installation position and height of the support column are determined by the condition that after the exhaust pipe is inserted into the through hole, the intake pipe is coaxial with the air inlet of the muffler cylinder body and the length of the intake pipe entering the air inlet meets the set requirements; moreover, the axis of the positioning pin hole on the support column is coaxial with the positioning hole of the intake pipe after the intake pipe is placed in the set position and is perpendicular to the axis of the muffler cylinder body. During specific operation, the muffler cylinder body of the range extender engine is placed on the cylinder body positioning, thereby realizing the radial and axial positioning of the muffler cylinder body; the pressing mechanism is set in the pressing state, thereby realizing the clamping and fixing of the muffler cylinder body; the front elbow of the intake pipe is placed in the arc-shaped groove supported by the front elbow of the intake pipe positioning, and the welding end of the front elbow is inserted into the air inlet of the cylinder body. The middle straight pipe of the intake pipe is placed in the arc-shaped groove supported by the middle straight pipe, and then the end flange of the intake pipe is placed on the inclined plane supported by the end flange, and the through holes at both ends of the flange are sleeved on the positioning posts on the inclined plane, thereby realizing the clamping and fixing of the intake pipe; the exhaust pipe is inserted into the through hole of the support column positioned by the exhaust pipe, and then the positioning pin is inserted into the positioning pin hole above the through hole of the support column and into the positioning hole on the intake pipe, thereby realizing the clamping and fixing of the exhaust pipe. The welding tool for the intake and exhaust pipes of the range extender engine muffler of the present invention can clamp and fix the intake and exhaust pipes at the welding position of the muffler cylinder body of the range extender engine at one time according to the set requirements. In this case, welding the intake and exhaust pipes to the muffler cylinder body is not only simple and efficient in operation, but also can effectively ensure the welding quality.

[0022] See Appendix Figure 5 As one of the preferred technical solutions, the pressing mechanism includes a base 3-1, a hinge seat 3-2, a T-shaped pressing rod 3-3, a rocker 3-4, a connecting rod 3-5 and a pressing head 3-6; the base is a cuboid, the hinge seat is fixed on the upper surface of the base, and hinge holes are provided at the front and rear ends of the hinge seat; the bottom of the vertical side of the T-shaped pressing rod is hinged to the hinge hole at the front end of the hinge seat, a pressing head is provided on the front side of the horizontal side of the T-shaped pressing rod, and a hinge hole is provided on the rear side of the horizontal side of the T-shaped pressing rod; the rocker is strip-shaped, two hinge holes are provided at the front section of the rocker, the hinge hole at its end is hinged to the rear side of the horizontal side of the T-shaped pressing rod, and the hinge hole in the middle of it is hinged to one end of the connecting rod; the other end of the connecting rod is hinged to the rear end of the hinge seat. The pressing mechanism of the present invention uses a rocker as the drive. When the rocker is lifted upward, the front end of the rocker drives the rear side of the T-shaped pressing rod to move downward, and the pressing head provided on the front side of the T-shaped pressing rod is lifted upward; when the rocker is pressed downward, the front end of the rocker drives the rear side of the T-shaped pressing rod to lift upward, and the pressing head provided on the front side of the T-shaped pressing rod presses downward.

[0023] As one of the preferred technical solutions, the indenter is a rectangular plate with a V-shaped opening at the lower part, and is perpendicularly hinged to the connecting column below the front side of the horizontal edge of the T-shaped pressing rod on the connecting column perpendicular to the axis of the muffler cylinder body. The middle part of the indenter is hinged to the connecting column below the front side of the horizontal edge of the T-shaped pressing rod, and can adaptively adjust to the slight irregularities of the pressed surface during pressing to ensure stable and reliable pressing.

[0024] As one of the preferred technical solutions, the connecting column below the front side of the horizontal edge of the T-shaped pressing rod is fixed below the front side of the horizontal edge of the T-shaped pressing rod through the slot hole and bolt in the front section of the horizontal edge of the T-shaped pressing rod. By adjusting the position of the connecting column on the front section of the horizontal edge of the T-shaped pressing rod, the geometric central axis of the V-shaped opening of the indenter on the connecting column coincides with or is in the same plane as the axis of the muffler cylinder body to ensure stable and reliable pressing.

[0025] Obviously, the beneficial technical effect of the welding tooling for the intake and exhaust pipes of the range-extended engine muffler of the present utility model is that it can clamp and fix the intake and exhaust pipes at the welding position of the muffler cylinder body of the range-extended engine according to the set requirements at one time; moreover, the operation is simple and the efficiency is high.

Claims

1. An exhaust pipe welding tooling for an extended-range engine muffler, characterized in that The welding tooling includes a base plate, a cylinder positioning mechanism, a pressing mechanism, an inlet pipe positioning mechanism, and an exhaust pipe positioning mechanism. The base plate is a rectangular plate, on which the cylinder positioning mechanism, the pressing mechanism, the inlet pipe positioning mechanism, and the exhaust pipe positioning mechanism are fixedly arranged. The cylinder positioning mechanism is arranged in the middle of the base plate and includes a middle support and end supports. The middle support is a rectangular plate with an arc-shaped upper end and there are two such plates, which are fixedly arranged at intervals in the middle of the base plate. The radius of the arc of the middle support is the same as the radius of the cylinder. The end support is a rectangular plate with an arc-shaped stepped upper end and there are two such plates, which are fixed on both sides of the middle support. The radius of the large arc of the end support is the same as the radius of the protrusion at the end of the cylinder, and the distance between the small arcs of the end support is the same as the length of the cylinder. Moreover, the axis of the arc of the middle support is coaxial with the axis of the large arc of the end support, and both are in a horizontal position. The pressing mechanism has two parts, which are fixedly arranged at intervals at the rear side of the cylinder positioning mechanism, and when the pressing mechanism is in the pressing state, the bottom surface of the pressing head just contacts the upper surface of the muffler cylinder placed on the cylinder positioning mechanism. The inlet pipe positioning mechanism is arranged on the left, right, and front sides of the cylinder positioning mechanism and includes a front end elbow support, a middle straight pipe support, and a rear end flange support. The front end elbow support is a long cuboid and is vertically fixed on the left side of the cylinder positioning mechanism. An arc-shaped groove matching the front end elbow of the inlet pipe is arranged on the upper surface of the front end elbow support. The installation position and height of the front end elbow support are such that after the front end elbow of the inlet pipe is placed in the arc-shaped groove, the welding end of the front end elbow just enters the set length of the air inlet of the cylinder and is coaxial with the air inlet. The middle straight pipe support is a long cuboid and there are two such supports, which are vertically fixed at intervals on the front side of the cylinder positioning mechanism. An arc-shaped groove matching the middle straight pipe of the inlet pipe is arranged on the upper surface of the middle straight pipe support. The installation position and height of the middle straight pipe support are such that after the middle straight pipe of the inlet pipe is placed in the arc-shaped groove, the middle straight pipe of the inlet pipe is in the set position. The rear end flange support is a cube and is fixed on the right side of the cylinder positioning mechanism. An inclined surface is arranged on the upper surface of the rear end flange support, and positioning posts with the same diameter and interval as the through holes at both ends of the flange are arranged on the inclined surface. The installation position and height of the rear end flange support are such that after the rear end flange of the inlet pipe is placed on the inclined surface and the through holes at both ends of the flange are sleeved on the positioning posts, the rear end flange is in the set position. The exhaust pipe positioning mechanism includes a support column and a positioning pin. The support column is a long cuboid and is vertically fixed between the two pressing mechanisms at the rear side of the cylinder positioning mechanism. A through hole with the same diameter as the outer diameter of the inlet pipe is horizontally arranged at the upper end of the support column, and a positioning pin hole is radially arranged above the through hole of the support column. The positioning pin is a stepped cylinder, and the diameter of its small head is the same as the diameter of the positioning pin hole of the support column and the positioning hole on the exhaust pipe. The installation position and height of the support column are such that after the exhaust pipe is inserted into the through hole, the inlet pipe is coaxial with the air inlet of the muffler cylinder and the length of the inlet pipe entering the air inlet meets the set requirements.Moreover, the axis of the positioning pin hole on the support column is coaxial with the intake pipe positioning hole after the intake pipe is placed in the set position and is perpendicular to the axis of the muffler cylinder body.; 2. The welding tooling for the intake and exhaust pipes of the range extender engine according to claim 1, characterized in that, The pressing mechanism includes a base, a hinge seat, a T-shaped pressing rod, a rocker, a connecting rod and a pressing head; the base is a cuboid, the hinge seat is fixed on the upper surface of the base, and hinge holes are provided at the front and rear ends of the hinge seat; the bottom of the vertical side of the T-shaped pressing rod is hinged to the hinge hole at the front end of the hinge seat, a pressing head is provided on the front side of the horizontal side of the T-shaped pressing rod, and a hinge hole is provided on the rear side of the horizontal side of the T-shaped pressing rod; the rocker is strip-shaped, two hinge holes are provided at the front section of the rocker, the hinge hole at its end is hinged to the rear side of the horizontal side of the T-shaped pressing rod, and the hinge hole in the middle of it is hinged to one end of the connecting rod; the other end of the connecting rod is hinged to the rear end of the hinge seat.

3. The welding tooling for the intake and exhaust pipes of the range-extended engine muffler according to claim 2, wherein The pressing head is a rectangular plate with a V-shaped opening at the lower part, and is vertically hinged to the connecting column below the front side of the horizontal side of the T-shaped pressing rod and perpendicular to the axis of the muffler cylinder body.

4. The welding tooling for the intake and exhaust pipes of the range extender engine muffler according to claim 3, wherein, The connecting column below the front side of the horizontal side of the T-shaped pressing rod is fixed below the front side of the horizontal side of the T-shaped pressing rod through the slot hole and bolt at the front section of the horizontal side of the T-shaped pressing rod.

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