Positioning jig for assisting assembly of turbocharger

Abstract

The positioning jig comprises a rectangular bottom plate, a vertical chuck is fixedly connected to the middle of the upper end face of the bottom plate, the lower portion of the chuck is sleeved with a rotary adjusting seat ring with a Z-shaped section, and a mark indicating groove is formed in the inner ring of the rotary adjusting seat ring; an angle scale groove opposite to the mark indicating groove is formed in the outer ring of the lower portion of the chuck, a lower positioning support is fixedly connected to the left side of the rotary adjusting seat ring, an upper positioning support is arranged on the left rear portion of the chuck, vertical positioning columns are fixedly connected to sliding bases of the chuck respectively, each positioning column comprises a cylindrical lower supporting column, and the lower supporting column is sleeved with a lower positioning bush. The lower end of the lower positioning bush abuts against the chuck, an upper supporting column is formed on the upper end face of the lower supporting column, and the upper supporting column is sleeved with an upper positioning bush. According to the jig, the inner bushings with different diameters are adopted to position a compressor casing, a middle casing and a turbine casing of different sizes on the turbocharger, and the jig is further provided with an effective angle positioning structure, so that assembly of the turbocharger is facilitated.

Description

Technical Field:

[0001] The present invention relates to the technical field of turbocharger assembly equipment, and more specifically, to a positioning fixture for assisting in the assembly of a turbocharger. Background Art:

[0002] A turbocharger is an air compressor driven by the exhaust gas generated by the operation of an internal combustion engine. By increasing the air flow into the internal combustion engine, the combustion efficiency is improved, thereby increasing the output power of the engine or improving the fuel economy at the same output power. The housing of an existing turbocharger generally consists of a compressor housing, an intermediate housing, and a turbine housing. The sizes of the compressor housing and the turbine housing on a conventional turbocharger are the same, and the aperture diameters of their inlets are the same. For some turbochargers, the turbine housing is much larger than the compressor housing, and the aperture diameters of their inlets are different. During assembly, existing fixtures are not applicable. Moreover, both the compressor housing and the turbine housing are in the shape of a volute, and an extended outlet pipe structure is provided at their outlet. There is a certain angle between the outlet pipes of the compressor housing and the turbine housing. Therefore, a structure that can effectively position the angles of the compressor housing and the turbine housing is required, and its positioning should not interfere with the assembly of the turbocharger. Summary of the Invention:

[0003] The purpose of the present invention is to provide a positioning fixture for assisting in the assembly of a turbocharger in view of the deficiencies of the prior art. It uses inner bushings with different diameters to position the compressor housing, intermediate housing, and turbine housing of different sizes on the turbocharger, and also has an effective angle positioning structure, facilitating the assembly of the turbocharger.

[0004] A positioning fixture for assisting in the assembly of a turbocharger includes a rectangular base plate. A vertical chuck is fixedly connected to the middle of the upper end surface of the base plate. A rotation adjustment seat ring with a Z-shaped cross-section is sleeved on the lower part of the chuck. A marking indicating groove is formed in the inner circle of the rotation adjustment seat ring, and an angle scale groove opposite to the marking indicating groove is formed in the outer circle of the lower part of the chuck. A lower positioning bracket is fixedly connected to the left side of the rotation adjustment seat ring, and an L-shaped limit seat is provided on the right side. The limit seat is fixedly connected to the base plate and is screwed with a plurality of positioning bolts. The end of the positioning bolt presses against the rotation adjustment seat ring. An upper positioning bracket is provided behind the left rear of the chuck. Vertical positioning columns are fixedly connected to the sliding seat of the chuck. The positioning column includes a cylindrical lower column. An inverted T-shaped lower positioning bushing is sleeved on the lower column. The lower end of the lower positioning bushing abuts against the chuck. An upper column is formed on the upper end surface of the lower column, and an upper positioning bushing is sleeved on the upper column.

[0005] The lower positioning bracket includes a horizontal support plate fixedly connected to the rotating adjustment seat ring, a rectangular tubular height adjustment seat is fixedly connected to the right end of the horizontal support plate, an F-shaped vertical bracket is inserted in the height adjustment seat, a horizontal T-shaped lower backer is connected to the notch in the upper part of the vertical bracket through a slide rail, a first adjusting bolt is screwed on the top of the vertical bracket, the end of the first adjusting bolt is pressed against the lower backer, a second adjusting bolt is screwed on the lower part of the vertical bracket, a vertical adjustment groove is formed on the height adjustment seat, the second adjusting bolt is inserted in the adjustment groove of the height adjustment seat, and the head of the second adjusting bolt is pressed against the height adjustment seat;

[0006] The upper positioning bracket includes a vertical L-shaped connecting plate, the upper part of the connecting plate is connected to a horizontal T-shaped upper backrest through a sliding rail, and a third adjusting bolt is screwed on the upper end surface of the connecting plate, and the end of the third adjusting bolt is pressed against the upper backrest; the lower part of the connecting plate is provided with a flip support, and the flip support includes a rectangular base fixedly connected to the bottom plate, and a guide circle is formed on the right side of the upper end of the base, and the outer wall of the guide circle abuts against a limiting guide wheel, and a T-shaped limiting pin is inserted on the limiting guide wheel, and the limiting pin is inserted and fixed on the connecting plate, and a longitudinal hinge shaft is pivotally connected to the base at the center of the guide circle, and the front end of the hinge shaft is fixed to the connecting plate.

[0007] Preferably, the rear end of the limit pin abuts against the rear end surface of the base, the center distance from the upper end surface of the base to the limit pin and the center distance from the right end surface of the base to the limit pin.

[0008] Preferably, the lower backrest is located at the lower side of the upper backrest, a transverse upper limit groove is formed on the upper end surface of the upper backrest, a transverse lower limit groove is formed on the upper end surface of the lower backrest, the end of the first adjusting bolt is inserted in the lower limit groove, and the end of the third adjusting bolt is inserted in the upper limit groove.

[0009] Preferably, a plurality of mounting holes are formed on both sides of the base plate, and a plurality of weight-reducing holes are formed on the base plate between the mounting holes and the rotation adjustment seat ring.

[0010] Preferably, handles are fixedly connected to both sides of the bottom plate.

[0011] Preferably, the diameter of the upper support column on the positioning column is smaller than the diameter of the lower support column.

[0012] Preferably, a connecting bracket is provided between the upper positioning bushings, and the connecting bracket includes a three-pronged central handle, and the ends of the three ends of the central handle are respectively formed with D-shaped sockets, and a screw with a D-shaped cross-section is inserted into the socket, one end of the screw is screwed into the upper positioning bushing, and the other end is attracted by a magnet block, and the magnet block is inserted and fixed at the bottom of the socket.

[0013] The beneficial effects of the present invention are:

[0014] This fixture uses inner bushings with different diameters to position the compressor housing, intermediate housing, and turbine housing of different sizes on the turbocharger, and also has an effective angle positioning structure, which facilitates the assembly of the turbocharger. Description of the Drawings:

[0015] Figure 1 It is a schematic position diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a schematic rear view structure diagram of the present invention;

[0017] Figure 3 It is a schematic side view structure diagram of the present invention;

[0018] Figure 4 It is a schematic top view structure diagram of the present invention;

[0019] Figure 5 It is a schematic three-dimensional structure diagram of the present invention without some positioning bushings.

[0020] In the figure: 1. Bottom plate; 2. Chuck; 3. Rotary adjustment seat ring; 4. Lower positioning bracket; 5. Upper positioning bracket; 6. Flip support; 7. Positioning column; 8. Upper positioning bushing; 9. Connecting bracket; 10. Lower positioning bushing; 20. Limit seat; 30. Positioning bolt. Detailed Description of the Invention:

[0021] Embodiment: See Figures 1 to 5 As shown, a positioning fixture for assisting the assembly of a turbocharger includes a rectangular bottom plate 1. In the middle of the upper end surface of the bottom plate 1, a vertical chuck 2 is fixedly connected. A rotary adjustment seat ring 3 with a Z-shaped cross-section is sleeved on the lower part of the chuck 2. A marking indicating groove 31 is formed in the inner ring of the rotary adjustment seat ring 3, and an angle scale groove 21 opposite to the marking indicating groove 31 is formed in the outer ring of the lower part of the chuck 2. The left side of the rotary adjustment seat ring 3 is fixedly connected with a lower positioning bracket 4, and an L-shaped limit seat 20 is arranged on the right side. The limit seat 20 is fixedly connected to the bottom plate 1 and is screwed with a plurality of positioning bolts 30. The end of the positioning bolt 30 presses against the rotary adjustment seat ring 3; an upper positioning bracket 5 is arranged at the left rear of the chuck 2. Vertical positioning columns 7 are fixedly connected to the sliding seats of the chuck 2. The positioning column 7 includes a cylindrical lower column 71. An inverted T-shaped lower positioning bushing 10 is sleeved on the lower column 71. The lower end of the lower positioning bushing 10 abuts against the chuck 2. An upper column 72 is formed on the upper end surface of the lower column 71, and an upper positioning bushing 8 is sleeved on the upper column 72;

[0022] The described lower positioning bracket 4 includes a transverse support plate 41 fixedly connected to the rotary adjustment seat ring 3. The right end of the transverse support plate 41 is fixedly connected with a rectangular tubular height adjustment seat 42. An F-shaped vertical support 43 is inserted into the height adjustment seat 42. A transverse T-shaped lower backing 45 is connected to the notch at the upper part of the vertical support 43 through a slide rail. The top of the vertical support 43 is screwed with a first adjustment bolt 46, and the end of the first adjustment bolt 46 presses against the lower backing 45. The lower part of the vertical support 43 is screwed with a second adjustment bolt 44. A vertical adjustment slot 421 is formed on the height adjustment seat 42, and the second adjustment bolt 44 is inserted into the adjustment slot 421 of the height adjustment seat 42, and the head of the second adjustment bolt 44 presses against the height adjustment seat 42;

[0023] The described upper positioning bracket 5 includes a vertical L-shaped connection plate 51. The upper part of the connection plate 51 is connected with a transverse T-shaped upper backing 52 through a slide rail. A third adjustment bolt 53 is screwed on the upper end surface of the connection plate 51, and the end of the third adjustment bolt 53 presses against the upper backing 52; A flip support 6 is provided at the lower part of the connection plate 51. The flip support 6 includes a rectangular base 61 fixedly connected to the bottom plate 1. A guide circle is formed on the right side edge of the upper end of the base 61. A limit guide wheel 63 abuts against the outer wall of the guide circle. A T-shaped limit pin 64 is inserted into the limit guide wheel 63, and the limit pin 64 is inserted and fixed on the connection plate 51. A longitudinal hinge shaft 62 is pivotally connected to the base 61 at the center of the guide circle, and the front end of the hinge shaft 62 is fixedly connected to the connection plate 51.

[0024] The rear end of the limit pin 64 abuts against the rear end surface of the base 61. The center distance from the upper end surface of the base 61 to the center of the limit pin 64 and the center distance from the right end surface of the base 61 to the center of the limit pin 64 can be used to realize the positioning of the upper positioning bracket 5 in the horizontal position and the vertical position. In the horizontal position, under the action of the gravity of the upper backing 52, the limit guide wheel 63 abuts against the side wall of the base 61; In the vertical position, also under the action of the gravity of the upper backing 52, in order to improve the positioning stability in the vertical position, a permanent magnet 65 can be fixedly connected to the lower part of the base 61, and the upper positioning bracket 5 is automatically flipped under the magnetic force of the permanent magnet 65.

[0025] The lower backing 45 is located below the upper backing 52. A transverse upper limit groove 521 is formed on the upper end surface of the upper backing 52. A transverse lower limit groove 451 is formed on the upper end surface of the lower backing 45. The end of the first adjustment bolt 46 is inserted into the lower limit groove 451, and the end of the third adjustment bolt 53 is inserted into the upper limit groove 521.

[0026] A plurality of mounting holes 11 are formed on both sides of the bottom plate 1. A plurality of weight reduction holes 12 are formed on the bottom plate 1 between the mounting holes 11 and the rotary adjustment seat ring 3. A slot box can be installed in the weight reduction holes 12, and positioning parts such as a lower positioning bushing 10 and an upper positioning bushing 8 can be placed in the slot box.

[0027] Handles are fixedly connected to both sides of the bottom plate 1; the whole plate can be moved by holding the handles.

[0028] The diameter of the upper support 72 on the positioning column 7 is smaller than the diameter of the lower support 71 .

[0029] A connecting bracket 9 is provided between the upper positioning bushings 8, and the connecting bracket 9 includes a trident-shaped central handle 91, and the ends of the three ends of the central handle 91 are respectively formed with D-shaped sockets, and a screw 92 with a D-shaped cross section is inserted into the socket, one end of the screw 92 is screwed into the upper positioning bushing 8, and the other end is sucked against a magnet block, and the magnet block is inserted and fixed at the bottom of the socket; an adjusting nut is screwed onto the screw 92, and the adjusting nut abuts against the upper positioning bushing 8;

[0030] During the assembly process of the turbocharger, it is necessary to take out and place the upper positioning bushings 8 from the positioning columns 7 one by one, which is rather troublesome, so a connecting bracket 9 is designed. The connecting bracket 9 can realize the whole taking out and placing of the upper positioning bushing 8, and its structure is movable, and the position of the slide seat on the chuck 4 can be changed. When the slide seat on the chuck 4 changes, the screw 92 can be separated from the magnet block, and then the screw 92 can be re-absorbed against the magnet block by loosening the adjusting nut and rotating the adjusting screw 92, and then the adjusting nut can be locked, and the adjustment is also very convenient.

[0031] Working principle: This structure is a positioning fixture for assisting the assembly of a turbocharger. The positioning fixture is provided with a positioning column 7 on the chuck 2. Positioning bushings of different sizes (lower positioning bushing 10 and upper positioning bushing 8) can be installed above and below the positioning column 7. The upper positioning bushing 8 is used to position the compressor casing, and the lower part of the lower positioning bushing 10 positions the turbine casing and the upper part positions the intermediate casing, so as to realize the centering of the compressor casing, the turbine casing and the turbine casing;

[0032] The lower support on the lower positioning bracket 4 is used to position the installation angle of the turbine housing, and the upper support 52 on the upper positioning bracket 5 is used to position the installation angle of the compressor housing. However, during actual assembly, the upper support 52 is located above the turbine housing, which will limit the turbine housing from being set on the chuck 2.

[0033] Therefore, the upper positioning bracket 5 is designed to have a flip structure, so that the upper backer 52 can be moved away from the top of the turbine shell. After the turbine shell is set, the upper positioning bracket 5 can be quickly positioned by flipping, and the position of the upper backer 52 does not need to be adjusted.

[0034] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A positioning jig for assisting in the assembly of a turbocharger, comprising a rectangular bottom plate (1). In the middle of the upper end surface of the bottom plate (1), a vertical chuck (2) is fixedly connected. A rotation adjustment seat ring (3) with a Z-shaped cross-section is sleeved on the lower part of the chuck (2). A marking indicating groove (31) is formed in the inner ring of the rotation adjustment seat ring (3). An angular scale groove (21) opposite to the marking indicating groove (31) is formed in the outer ring of the lower part of the chuck (2). A lower positioning bracket (4) is fixedly connected to the left side of the rotation adjustment seat ring (3), and an L-shaped limit seat (20) is arranged on the right side. The limit seat (20) is fixedly connected to the bottom plate (1) and is screwed with a plurality of positioning bolts (30). The end of the positioning bolt (30) presses against the rotation adjustment seat ring (3); An upper positioning bracket (5) is arranged at the left rear of the chuck (2), and it is characterized in that: Vertical positioning columns (7) are fixedly connected to the sliding seats of the chuck (2). The positioning column (7) includes a cylindrical lower support column (71). An inverted T-shaped lower positioning bushing (10) is sleeved on the lower support column (71). The lower end of the lower positioning bushing (10) abuts against the chuck (2). An upper support column (72) is formed on the upper end face of the lower support column (71). An upper positioning bushing (8) is sleeved on the upper support column (72). The lower positioning bracket (4) includes a horizontal support plate (41) fixedly connected to the rotary adjustment seat ring (3). A rectangular tubular height adjustment seat (42) is fixedly connected to the right end of the horizontal support plate (41). An F-shaped vertical support (43) is inserted into the height adjustment seat (42). A horizontally T-shaped lower backrest (45) is connected by a slide rail in the notch at the upper part of the vertical support (43). A first adjustment bolt (46) is screwed on the top of the vertical support (43). The end of the first adjustment bolt (46) presses against the lower backrest (45). A second adjustment bolt (44) is screwed on the lower part of the vertical support (43). A vertical adjustment slot (421) is formed on the height adjustment seat (42). The second adjustment bolt (44) is inserted into the adjustment slot (421) of the height adjustment seat (42). The head of the second adjustment bolt (44) presses against the height adjustment seat (42). The upper positioning bracket (5) includes a vertically L-shaped connecting plate (51). A horizontally T-shaped upper backrest (52) is connected by a slide rail at the upper part of the connecting plate (51). A third adjustment bolt (53) is screwed on the upper end face of the connecting plate (51). The end of the third adjustment bolt (53) presses against the upper backrest (52). A turning support (6) is provided at the lower part of the connecting plate (51). The turning support (6) includes a rectangular base (61) fixedly connected to the bottom plate (1). A guide circle is formed on the right side edge at the upper end of the base (61). A limiting guide wheel (63) abuts against the outer wall of the guide circle. A T-shaped limiting pin (64) is inserted into the limiting guide wheel (63). The limiting pin (64) is inserted and fixed on the connecting plate (51). A longitudinal hinge shaft (62) is pivotally connected to the base (61) at the center of the guide circle. The front end of the hinge shaft (62) is fixedly connected to the connecting plate (51).

2. The positioning jig for assisting the assembly of a turbocharger according to claim 1, wherein: The rear end of the limiting pin (64) abuts against the rear end face of the base (61), the center distance from the upper end face of the base (61) to the center of the limiting pin (64), and the center distance from the right end face of the base (61) to the center of the limiting pin (64).

3. The positioning fixture for assisting in the assembly of a turbocharger according to claim 1, wherein: The lower backrest (45) is located below the upper backrest (52). A horizontal upper limiting groove (521) is formed on the upper end face of the upper backrest (52). A horizontal lower limiting groove (451) is formed on the upper end face of the lower backrest (45). The end of the first adjustment bolt (46) is inserted into the lower limiting groove (451). The end of the third adjustment bolt (53) is inserted into the upper limiting groove (521).

4. An alignment jig for assisting in the assembly of a turbocharger, characterized in that: A number of mounting holes (11) are formed on both sides of the bottom plate (1). A number of weight-reducing holes (12) are formed on the bottom plate (1) between the mounting holes (11) and the rotary adjustment seat ring (3).

5. The positioning jig for assisting the assembly of a turbocharger according to claim 4, wherein: Handles are respectively fixedly connected to both sides of the bottom plate (1).

6. The positioning fixture for assisting in the assembly of a turbocharger according to claim 1, wherein: The diameter of the upper support (72) on the positioning column (7) is smaller than the diameter of the lower support (71).

7. The positioning fixture for assisting in the assembly of a turbocharger according to claim 6, characterized in that: A connecting bracket (9) is provided between the upper positioning bushings (8), and the connecting bracket (9) includes a trident-shaped central handle (91). The ends of the three ends of the central handle (91) are respectively formed with D-shaped sockets, and a screw with a D-shaped cross-section is inserted into the socket. One end of the screw is screwed into the upper positioning bushing (8), and the other end is attracted by a magnet block, and the magnet block is inserted and fixed at the bottom of the socket.

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