A tooling for exhaust aftertreatment assembly assembly

Abstract

The application provides a tool for assembling a tail gas aftertreatment assembly, which can better position a clamp of the tail gas aftertreatment assembly, avoid affecting the air tightness of the assembly, and ensure the reliability of the assembly, and comprises a clamp positioning module, wherein the clamp positioning module comprises: a lower clamp positioning unit, which is arranged on a base to support the aftertreatment assembly; the lower clamp positioning unit comprises a clamp limiting part matched with a gap of the clamp, and the clamp passes through the clamp limiting part to bundle the connection between a DPF assembly, an SCR assembly and a DOC assembly; and an upper clamp positioning unit, which is arranged corresponding to the lower clamp positioning unit; the upper clamp positioning unit comprises a pneumatic clamp, a movable end of the pneumatic clamp is connected with a clamp positioning rod through a connecting rod, a lower end of the clamp positioning rod is provided with a clamp limiting block, and the clamp limiting block can be matched with a locking connection part of the clamp to position the clamp.

Description

Technical Field

[0001] This invention relates to the technical field of diesel vehicle exhaust aftertreatment production equipment, specifically to a tooling for assembling exhaust aftertreatment assemblies. Background Technology

[0002] In diesel vehicle exhaust aftertreatment devices that meet the China VI emission standards, DOC, DPF, and SCR components need to be assembled together. Since the dimensions of DOC, DPF, and SCR components vary from product to product, if each exhaust aftertreatment device product is designed with a separate mold, there will be problems such as high investment costs, large tooling footprint, and low utilization rate of assembly equipment.

[0003] Chinese invention patent CN112360595A discloses an assembly device for diesel vehicle exhaust aftertreatment devices. However, in actual production and use, it has been found that the clamps set at the connection between the DPF component, SCR component and DOC component are prone to inaccurate positioning and tilting. Tightening the clamps may affect the airtightness of the assembly, resulting in product defects. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a tooling for assembling exhaust aftertreatment assemblies, which can better position the clamps of the exhaust aftertreatment assembly, avoid affecting the airtightness of the assembly, and ensure the reliability of the assembly.

[0005] The technical solution is as follows: a tooling for assembling an exhaust aftertreatment assembly, including a base, on which an aftertreatment assembly positioning module is provided, the aftertreatment assembly positioning module being able to fix the aftertreatment assembly on the base, characterized in that it further includes: a clamp positioning module, the clamp positioning module comprising:

[0006] A clamp lower positioning unit is provided on the base to support the post-processing assembly. Two clamp lower positioning units are respectively provided at the connection between the DPF component and the SCR component and the connection between the DPF component and the DOC component of the post-processing assembly. The clamp lower positioning unit includes a clamp limiting part that fits with the clamp clearance. The clamp passes through the clamp limiting part to bind the connection between the DPF component and the SCR component and the DOC component.

[0007] The upper positioning unit of the clamp is provided corresponding to the lower positioning unit of the clamp. The upper positioning unit of the clamp includes a pneumatic clamp. The movable end of the pneumatic clamp is connected to the clamp positioning rod through a connecting rod. The lower end of the clamp positioning rod is provided with a clamp limiting block. The clamp limiting block can cooperate with the locking connection part of the clamp to position the clamp.

[0008] Furthermore, the clamp limiting block includes a positioning rod connecting block connected to the clamp positioning rod. The positioning rod connecting block is provided with side plates around its perimeter. When the clamp limiting block positions the locking connection part of the clamp, the side plates on the left and right sides limit the locking connection part on both sides of the locking connection part, and the side plates on the front and rear sides press on the locking connection part of the clamp. The front side plate is provided with a notch, which allows the clamp bolt of the locking connection part to pass through.

[0009] Furthermore, a transverse slide rail is provided along the length direction on the base, and a plurality of slide tables are provided on the transverse slide rail that slide in cooperation with the transverse slide rail. The post-processing assembly positioning module and the clamp positioning module are respectively disposed on the slide tables.

[0010] Furthermore, the clamp lower positioning unit includes a connecting plate fixed on the slide table, and a clamp connecting base is fixed on the connecting plate.

[0011] The clamp connecting base is provided with a support rod passing through the clamp connecting base. The upper end of the support rod is fixedly connected to a clamp support seat. An adjusting nut is provided on the rod body at the upper end of the clamp connecting base. Guide posts are provided on the clamp connecting base and on both sides of the support rod. The upper end of the guide post is fixedly connected to the clamp support seat. A spring is also provided on the guide post between the clamp support seat and the clamp connecting base. Support rollers are provided on both sides of the upper end of the clamp support seat. The upper end of the clamp support seat is also provided with an arc-shaped support part that can cooperate with the DPF assembly. The support rollers and the arc-shaped support part cooperate to form the clamp limiting part.

[0012] Furthermore, the after-processing assembly positioning module includes:

[0013] The DOC component assembly and positioning unit includes a base plate fixed on the slide table, a lower connecting plate on the base plate, and an upper connecting plate hinged together. A limit cylinder is also mounted on the base plate, with a top block on the piston rod of the limit cylinder. A limit block is provided on the upper end of the upper connecting plate corresponding to the top block. The top block and the limit block each have mutually cooperating inclined surfaces. The top block and the limit block cooperate to limit the movement of the upper connecting plate. The front side of the upper connecting plate is provided with… A flip-up limiting plate is provided, which cooperates with the lower connecting plate to limit the forward flipping of the upper connecting plate. A fixed base plate is fixedly connected to the front side of the upper connecting plate. The fixed base plate is provided with a flange positioning component that can cooperate with the flange of the DOC assembly. An operating handle is also connected to the upper end of the upper connecting plate. A top block limiting plate is connected to the lower connecting plate. A limiting groove is provided on the top block limiting plate corresponding to the top block. The top block passes through the limiting groove, and the limiting groove can limit the top block.

[0014] Furthermore, the flange positioning assembly includes a flange positioning panel, which has a changing block mounting groove. The flange pin positioning changing block is installed in the changing block mounting groove by bolts. The flange pin positioning changing block has a positioning pin fixing hole. The flange of the DOC assembly is fixed on the flange positioning panel by a flange positioning pin.

[0015] Furthermore, the flange positioning panel is rotatably mounted on the fixed base plate via a rotating shaft mechanism.

[0016] Furthermore, the after-processing assembly positioning module includes:

[0017] A nozzle positioning unit includes a rotating base mounted on a slide table, a first support plate on the rotating base, a first vertical adjustment groove on the first support plate, and a second support plate with a second vertical adjustment groove matching the first vertical adjustment groove. The second support plate is bolted to the first and second vertical adjustment grooves and connected to the first support plate. The second support plate also has a first horizontal adjustment groove. A nozzle positioning pin mechanism is bolted to the first horizontal adjustment groove and mounted on the second support plate. The nozzle positioning pin mechanism includes a rotating base with a positioning pin guide seat mounted on the rotating base. A nozzle positioning pin that can cooperate with a nozzle on the aftertreatment assembly is mounted on the positioning pin guide seat. The positioning pin guide seat also has a positioning pin locking member with several locking grooves. The nozzle positioning pin also has a locking rod that can cooperate with the locking grooves.

[0018] Furthermore, the after-processing assembly positioning module includes:

[0019] A sensor positioning unit, comprising a sensor positioning pin mechanism, the sensor positioning pin mechanism including a sensor positioning pin capable of engaging with a sensor mounting base on a post-processing assembly, the sensor positioning pin mechanism being mounted on a slide table via bolts and an adjustable connecting plate.

[0020] Furthermore, the sensor positioning unit also includes a longitudinal slide rail disposed on the slide table, the longitudinal slide rail being disposed along the width direction of the base, a slidable longitudinal slide table on the longitudinal slide rail, and the adjustable connecting plate and the sensor positioning pin mechanism being disposed on the longitudinal slide table respectively.

[0021] Furthermore, the after-processing assembly positioning module includes:

[0022] The SCR component support and positioning unit includes a connecting plate fixed on the slide table, an SCR component connecting base fixed on the connecting plate, a guide rod passing through the SCR component connecting base, an SCR component support seat fixedly connected to the upper end of the guide rod, an adjusting nut on the rod body at the upper end of the SCR component connecting base, guide posts on both sides of the guide rod on the SCR component connecting base, the upper ends of the guide posts fixedly connected to the SCR component support seat, a spring on the guide post between the SCR component support seat and the SCR component connecting base, support rollers on both sides of the upper end of the SCR component support seat, and an SCR component limiting plate connected to the connecting plate of the SCR component support and positioning unit.

[0023] Furthermore, a positioning plate is provided on one side of the transverse slide rail on the base, parallel to the transverse slide rail. The positioning plate has a plurality of positioning adjustment holes. The slide adjustment mechanism is fixed to the positioning plate through the positioning adjustment holes and bolts. The slide adjustment mechanism includes a slide adjustment base, on which a control lever is hinged. The control lever is hinged to a linkage mechanism. The linkage mechanism is connected to the slide through a positioning rod and a positioning hole on the slide.

[0024] The tooling of this invention for assembling exhaust aftertreatment assemblies includes a lower clamp positioning unit and an upper clamp positioning unit to ensure proper clamp positioning and prevent inaccurate clamp positioning. These units simultaneously position the clamp from both above and below. Through the cooperation of the lower and upper clamp positioning units, the clamp will not tilt after positioning, preventing potential issues with the airtightness of the assembly and ensuring product quality even after tightening. Furthermore, the notch on the side plate at the front of the clamp positioning block of the upper clamp positioning unit controls the clamp's orientation and ensures the clamp bolt position at the clamp locking connection is set at the top. The tooling is positioned so that the bolts face the operator, making it easy for the operator to confirm the installation during assembly and ensuring ease of use. Furthermore, the tooling for assembling the exhaust aftertreatment assembly is a universal tooling. Each positioning module can be adjusted to suit different exhaust aftertreatment assemblies based on the specific conditions and positioning requirements of each product. With multiple models, only positioning adjustments are needed for different products, significantly reducing the investment cost of tooling equipment and manufacturing complexity. This reduces costs and the risk of product quality problems caused by frequent tooling changes in the case of multiple product models. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a tooling used for assembling an exhaust aftertreatment assembly in one of the embodiments.

[0026] Figure 2 This is a schematic diagram from a first perspective of the tooling assembly assembly used for assembling an exhaust aftertreatment assembly in the embodiment.

[0027] Figure 3 This is a schematic diagram from a second perspective of the tooling assembly assembly used for assembling an exhaust aftertreatment assembly in the embodiment.

[0028] Figure 4 This is a schematic diagram of the upper positioning unit and the lower positioning unit of the clamp in the embodiment;

[0029] Figure 5 This is a schematic diagram illustrating the cooperation between the upper positioning unit and the lower positioning unit of the clamp in the embodiment when positioning the clamp.

[0030] Figure 6 This is a schematic diagram of the positioning unit on the clamp in the embodiment;

[0031] Figure 7 This is a schematic diagram from a first perspective of the assembly and positioning unit of the DOC component in the embodiment;

[0032] Figure 8 This is a schematic diagram from a second perspective of the assembly positioning unit of the DOC component in the embodiment;

[0033] Figure 9 This is a schematic diagram showing the flange positioning assembly mating with the flange in the embodiment.

[0034] Figure 10 This is a schematic diagram of the nozzle positioning unit in the embodiment;

[0035] Figure 11 This is a schematic diagram of the first type of sensor positioning unit in the embodiment;

[0036] Figure 12 This is a schematic diagram of the second type of sensor positioning unit in the embodiment;

[0037] Figure 13 This is a schematic diagram of the third type of sensor positioning unit in the embodiment;

[0038] Figure 14 This is a schematic diagram of the SCR component supporting the positioning unit in the embodiment;

[0039] Figure 15 This is a schematic diagram of the tooling used for assembling the exhaust aftertreatment assembly from another perspective in the embodiment. Detailed Implementation

[0040] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0041] See Figures 1 to 15 The present invention provides a tooling for assembling an exhaust aftertreatment assembly, comprising a base 100, on which an aftertreatment assembly positioning module is provided, the aftertreatment assembly positioning module being capable of fixing the aftertreatment assembly 200 onto the base 100, and further comprising: a clamp positioning module, the clamp positioning module comprising:

[0042] A clamp lower positioning unit 300 is mounted on the base 100 to support the post-processing assembly 200. In this embodiment, two clamp lower positioning units 300 are respectively located at the connection between the DPF component 210 and the SCR component 220 and the connection between the DPF component 210 and the DOC component 230 of the post-processing assembly. The clamp lower positioning unit 300 is clearance-fitted with the clamp 204 and the clamp limiting part 301. The clamp 204 passes through the clamp limiting part 301 to bind the connection between the DPF component 210 and the SCR component 220 and the DOC component 230.

[0043] The upper positioning unit 400 of the clamp is positioned corresponding to the lower positioning unit 300 of the clamp. The upper positioning unit 400 can cooperate with the lower positioning unit 300 to position the clamp 204 above and below. The upper positioning unit 400 includes a pneumatic clamp 401. The movable end of the pneumatic clamp 401 is connected to the clamp positioning rod 403 via a connecting rod 402. The lower end of the clamp positioning rod 403 is provided with a clamp limiting block 404. The clamp limiting block 404 can cooperate with the locking connection part 2041 of the clamp to position the clamp 204. After the clamp positioning rod 403 is positioned, it can be locked. It also includes a positioning pin locking member. The positioning pin locking member is provided with several locking grooves. The clamp positioning rod is also provided with a locking rod that can cooperate with the locking grooves.

[0044] Specifically, the pneumatic clamp 401 is mounted on the height adjustment changing block 405. The height adjustment changing blocks 405 are connected by bolts, and the height of the connection between the height adjustment changing blocks 405 can be adjusted.

[0045] In one specific embodiment of the present invention, the clamp limiting block 404 includes a positioning rod connecting block 4041 connected to the clamp positioning rod 403. Side plates 4042 are respectively provided around the positioning rod connecting block 4041. When the clamp limiting block 404 positions the clamp's locking connection part 2041, the left and right side plates 4042 limit the locking connection part 2041 on both sides. The front and rear side plates 4042 press against the clamp's locking connection part 2041 respectively. The front side plate 4042... The 042 has a notch 4043, which allows the clamp bolt 2042 of the locking connection to pass through. In the embodiment, the lower end of the side plate 4042 is also set to be arc-shaped, which can improve the matching degree with the clamp. Through the notch design on the side plate of the clamp positioning block in the embodiment, the orientation of the clamp can be controlled, and the clamp bolt of the clamp locking connection is positioned at the top and the bolt is oriented towards the operator's side, which is convenient for the operator to confirm the installation during assembly and is easy to use.

[0046] In one embodiment of the present invention, a transverse slide rail 101 is provided on the base 100 along the length direction, and a plurality of slide tables 102 are provided on the transverse slide rail 101 to slide in cooperation with the transverse slide rail 101. The post-processing assembly positioning module and the clamp positioning module are respectively arranged on the slide table 102. By setting the transverse slide rail 101, different specifications of post-processing assemblies can be adapted.

[0047] In one specific embodiment, the clamp lower positioning unit 300 includes a connecting plate 302 fixed on the slide table 102. A clamp connecting base 303 is fixed on the connecting plate 302. A support rod 304 passing through the clamp connecting base 303 is provided on the clamp connecting base 303. A clamp support seat 305 is fixedly connected to the upper end of the support rod 304. An adjusting nut 305 is provided on the rod body of the support rod 304 located at the upper end of the clamp connecting base 303. The support rod 304 is provided with guide posts 306 on both sides. The upper end of the guide post 306 is fixedly connected to the clamp support seat 305. The guide post between the clamp support seat 304 and the clamp connecting base 303 is also provided with a spring 307. The upper end of the clamp support seat 305 is provided with support rollers 308 on both sides. The upper end of the clamp support seat 305 is also provided with an arc-shaped support part 309 that can cooperate with the DPF component. The support rollers 308 and the arc-shaped support part 309 cooperate to form the clamp limiting part 301.

[0048] The lower positioning unit 300 of the clamp can adjust the support height using the support rod, and can make slight self-adjustment during assembly using two sets of springs on both sides to facilitate assembly.

[0049] See Figure 7 , 8 9. In one embodiment of the present invention, the post-processing assembly positioning module includes:

[0050] DOC component assembly positioning unit 500 includes a base plate 501 fixed on a slide table 102, a lower connecting plate 502 mounted on the base plate 501, and an upper connecting plate 503 hinged to the lower connecting plate 502. A limit cylinder 504 is also mounted on the base plate 501, with a top block 505 on the piston rod of the limit cylinder 504. A limit block 506 is located at the upper end of the upper connecting plate 503 corresponding to the top block 505. The top block 505 and the limit block 506 each have cooperating inclined surfaces 507. The top block 505 and the limit block 506 cooperate to limit the movement of the upper connecting plate 503. The front side is provided with a flip-limiting plate 508, which cooperates with the lower connecting plate 502 to limit the forward flipping of the upper connecting plate 503. The front side of the upper connecting plate 503 is fixedly connected with a fixing base plate 509. The fixing base plate 509 is provided with a flange positioning component that can cooperate with the flange 231 of the DOC assembly. The upper end of the upper connecting plate 503 is also connected with an operating handle 510. The lower connecting plate 502 is connected with a top block limiting plate 511. The top block limiting plate 511 is provided with a limiting groove 512 corresponding to the top block 505. The top block 505 is set through the limiting groove 512, and the limiting groove 512 can limit the top block 505.

[0051] When the piston rod of the limit cylinder 504 descends, its limiting effect decreases, allowing the upper connecting plate and the fixed base plate to rotate. After rotating a certain angle, the operating handle can be rotated to facilitate the assembly of the DOC component. After the DOC component and the DPF component are engaged, the piston rod of the limit cylinder can be raised to fix the upper connecting plate and the fixed base plate. The flange of the DOC component can be quickly fixed by the cooperation of the positioning pin and the flange fixing panel on the fixed base plate.

[0052] Given the varying flanges of the DOC components in current aftertreatment assemblies, resulting in diverse flange hole positions, in one embodiment of the present invention, a flange positioning assembly is provided, including a flange positioning panel 513. The flange positioning panel 513 has a changing block mounting groove 514, and a flange pin positioning changing block 515 is bolted into the changing block mounting groove 514. The flange pin positioning changing block 515 has a positioning pin fixing hole 516. The flange 231 of the DOC assembly is fixed to the flange positioning panel 513 by a flange positioning pin 517. By setting the flange pin positioning changing block 515 and the changing block mounting groove 514, the position of the flange positioning pin can be adjusted according to the different flanges, thereby adapting to different models of aftertreatment assemblies.

[0053] In one embodiment, the flange positioning panel 513 is rotatably mounted on the fixed base plate 509 via a rotating shaft mechanism 518. The flange positioning panel 513 is made to be rotatably adjustable. If the flange is positioned differently around the central axis, it can be adjusted and positioned by the positioning panel.

[0054] See Figure 10 The aftertreatment assembly positioning module includes:

[0055] The nozzle positioning unit 600 includes a rotating base 601 mounted on a slide table 1, a first support plate 602 on the rotating base 601, a first vertical adjustment groove 603 vertically arranged on the first support plate 602, and a second support plate 604 with a second vertical adjustment groove 605 matching the first vertical adjustment groove 603. The second support plate 604 is bolted to the first vertical adjustment groove 603 and the second vertical adjustment groove 605 and connected to the first support plate 602. The second support plate 602 also has... The first lateral adjustment slide 606 is bolted to the nozzle positioning pin mechanism, which is mounted on the second support plate 604. The nozzle positioning pin mechanism includes a rotating base 608, a positioning pin guide seat 609, a nozzle positioning pin 610 that can cooperate with the nozzle on the aftertreatment assembly, a positioning pin locking member 611 on the positioning pin guide seat 610, a plurality of locking grooves 612 on the positioning pin locking member 611, and a locking rod 607 that can cooperate with the locking grooves 612 on the nozzle positioning pin 610.

[0056] Since the nozzle position and angle of the aftertreatment assembly are variable, the nozzle positioning unit designed for this purpose can achieve height and front-to-back position adjustment. The left-to-right position adjustment is achieved by moving the slide table at the bottom of the nozzle positioning unit on the horizontal slide rail. It can also achieve angle adjustment around the horizontal axis and the vertical axis. The vertical axis angle can be adjusted by adjusting the lower rotating base 601. The nozzle height can be adjusted up and down by the cooperation of the first support plate 602 and the second support plate 604. The angle change around the horizontal axis can be adjusted by the upper rotating base 608. The front-to-back direction can also be adjusted by the first horizontal adjustment slide 607, and the position of the rotating base 608 can also be changed.

[0057] Due to the variety of products, the nozzle position and angle vary and may be located within the DPF assembly or SCR assembly. DPF assembly positioning may also be achieved through sensors; SCR assembly positioning may be achieved through positioning the nozzle or sensor mount. The axial position of the sensor mount is also not fixed, so interchangeable and adjustable modules are required to achieve positioning for each segment.

[0058] The after-treatment assembly positioning module includes:

[0059] The sensor positioning unit 700 includes a sensor positioning pin mechanism, which includes a sensor positioning pin 701 that can cooperate with a sensor mounting base on the post-processing assembly. The sensor positioning pin mechanism is mounted on the slide table by bolts and an adjustable connecting plate 702. The sensor positioning unit 700 can be used to position the sensor according to its position.

[0060] When the sensor mounting bracket on the aftertreatment assembly is located above the aftertreatment assembly, the following method is used: Figure 11 The sensor positioning unit 700 shown has three adjustable connecting plates 702. The three adjustable connecting plates 702 can be fixed together by bolts and the connection angle between the adjustable connecting plates 702 can be adjusted. Then, a lifting cylinder 705 is set on the last adjustable connecting plate. The piston rod of the lifting cylinder 705 is connected to the sensor positioning pin 701 through a connecting rod. The lifting cylinder 705 can drive the sensor positioning pin 701 to cooperate with the sensor mounting base for positioning. This type of sensor positioning unit is compatible with sensor mounting bases with an angle of -35° to 15° in the vertical upward direction. The positive angle indicates the side facing the operator, and the negative angle indicates the side away from the user.

[0061] When the sensor mounting bracket on the aftertreatment assembly is located on the side of the aftertreatment assembly, the following method is used: Figure 12 The sensor positioning unit 700 shown also includes a longitudinal slide rail 703 mounted on a slide table. The longitudinal slide rail 703 is arranged along the width direction of the base 100. A longitudinal slide table 704 is slidable on the longitudinal slide rail 703. Adjustable connecting plates 702 and sensor positioning pin mechanisms are respectively mounted on the longitudinal slide table 704. The height and number of adjustable connecting plates 702 can be adjusted according to actual conditions to adapt to sensor mounting bases in different positions. The connection angle between the adjustable connecting plates 702 can also be adjusted.

[0062] When the sensor mounting bracket on the aftertreatment assembly is located below the aftertreatment assembly, the following method is used: Figure 13 The sensor positioning unit 700 shown is adapted to sensor mounting bases with an angle of 0° to 40° to the vertical downward direction. The positive angle indicates the side facing the operator. This sensor positioning unit also includes a longitudinal slide rail 703 set on the slide table. The longitudinal slide rail 703 is set along the width direction of the base 100. A longitudinal slide table 704 that can slide on the longitudinal slide rail 703 is provided. Adjustable connecting plates 702 and sensor positioning pin mechanisms are respectively set on the longitudinal slide table 704. The height and number of adjustable connecting plates 702 can be adjusted according to the actual situation to adapt to sensor mounting bases in different positions. The connection angle between the adjustable connecting plates 702 can also be adjusted.

[0063] See Figure 14 In one embodiment, the post-processing assembly positioning module includes:

[0064] SCR component support and positioning unit 800 includes a connecting plate 801 fixed on a slide table, an SCR component connecting base 802 fixed on the connecting plate 801, a guide rod 803 passing through the SCR component connecting base 802, an SCR component support seat 804 fixedly connected to the upper end of the guide rod 803, and an adjusting nut 805 on the rod body of the guide rod 803 located at the upper end of the SCR component connecting base 802. On the SCR component connecting base 802 and on both sides of the guide rod 804, respectively... A guide post 806 is provided, the upper end of which is fixedly connected to the SCR component support base. A spring 807 is also provided on the guide post 806 between the SCR component support base 804 and the SCR component connecting base 802. Support rollers 808 are provided on both sides of the upper end of the SCR component support base. An SCR component limiting plate 809 is also connected to the connecting plate of the SCR component support positioning unit. The SCR component support positioning unit with the SCR component limiting plate 809 can position the post-processing assembly at one end, while the DOC component assembly positioning unit 500 positions it at the other end.

[0065] Furthermore, a positioning plate 103 is provided on one side of the transverse slide rail 101 on the base 100, parallel to the transverse slide rail 101. The positioning plate 103 has several positioning adjustment holes 104. The slide adjustment mechanism is fixed to the positioning plate 103 via the positioning adjustment holes 104 and bolts. The slide adjustment mechanism includes a slide adjustment base 105, on which a control lever 106 is hinged. The control lever 106 is hinged to a linkage mechanism 107, which is connected to the slide 102 via a positioning rod 108. The positioning hole 109 is connected to the slide table 102. In this embodiment, the slide table adjustment mechanism is used to move the DOC component assembly positioning unit 500 and the SCR component support positioning unit 800. The positions of other positioning units that do not need to be changed, such as the lower positioning unit 300 of the clamp, the upper positioning unit 400 of the clamp, the DOC component assembly positioning unit 500, the nozzle positioning unit 600, and the sensor positioning unit 700, can be locked in place by connecting the plate 110 and bolts to the positioning plate 103.

[0066] The tooling used for assembling the exhaust aftertreatment assembly in the above embodiments is a general-purpose tooling. Each positioning module can be adjusted according to the specific situation and positioning requirements of each product to adapt to different exhaust aftertreatment assemblies. With multiple models, different products only need to adjust the positioning, which greatly reduces the investment cost of tooling equipment and reduces manufacturing complexity. While reducing costs, it also reduces the risk of product quality problems caused by frequent tooling changes in the case of multiple product models.

[0067] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tooling for assembling an exhaust aftertreatment assembly, comprising a base, wherein an aftertreatment assembly positioning module is provided on the base, the aftertreatment assembly positioning module being capable of fixing the aftertreatment assembly on the base, characterized in that, Also includes: The clamp positioning module includes: A clamp lower positioning unit is provided on the base to support the post-processing assembly. Two clamp lower positioning units are respectively provided at the connection between the DPF component and the SCR component and the connection between the DPF component and the DOC component of the post-processing assembly. Each clamp lower positioning unit includes a clamp limiting part that fits with the clamp clearance. The clamp passes through the clamp limiting part to bind the connection between the DPF component and the SCR component and the DOC component. The upper positioning unit of the clamp is provided corresponding to the lower positioning unit of the clamp. The upper positioning unit of the clamp includes a pneumatic clamp. The movable end of the pneumatic clamp is connected to the clamp positioning rod through a connecting rod. The lower end of the clamp positioning rod is provided with a clamp limiting block. The clamp limiting block can cooperate with the locking connection part of the clamp to position the clamp. The clamp limiting block includes a positioning rod connecting block connected to the clamp positioning rod. The positioning rod connecting block is provided with side plates on all four sides. When the clamp limiting block positions the locking connection part of the clamp, the side plates on the left and right sides limit the locking connection part on both sides of the locking connection part. The side plates on the front and rear sides press on the locking connection part of the clamp. The front side plate is provided with a notch, which allows the clamp bolt of the locking connection part to pass through. The post-processing assembly positioning module includes: A DOC component assembly and positioning unit includes a base plate fixed on a slide table. A lower connecting plate is mounted on the base plate and hinged to an upper connecting plate. A limit cylinder is also mounted on the base plate. A top block is mounted on the piston rod of the limit cylinder. A limit block is mounted on the upper end of the upper connecting plate corresponding to the top block. The top block and the limit block each have mutually cooperating inclined surfaces. The top block and the limit block cooperate to limit the movement of the upper connecting plate. The front side of the upper connecting plate is provided with… A flip-up limiting plate, which cooperates with the lower connecting plate to limit the forward flipping of the upper connecting plate, is fixedly connected to the front side of the upper connecting plate. The fixed base plate is provided with a flange positioning component that can cooperate with the flange of the DOC assembly. An operating handle is also connected to the upper end of the upper connecting plate. A top block limiting plate is connected to the lower connecting plate. The top block limiting plate is provided with a limiting groove corresponding to the top block. The top block passes through the limiting groove, and the limiting groove can limit the top block. The flange positioning assembly includes a flange positioning panel, which has a changing block mounting groove. The flange pin positioning changing block is installed in the changing block mounting groove by bolts. The flange pin positioning changing block has a positioning pin fixing hole. The flange of the DOC assembly is fixed on the flange positioning panel by a flange positioning pin. The flange positioning panel is rotatably mounted on the fixed base plate via a rotating shaft mechanism; A transverse slide rail is provided along the length direction on the base, and a plurality of slide tables are provided on the transverse slide rail that slide in cooperation with the transverse slide rail. The post-processing assembly positioning module and the clamp positioning module are respectively disposed on the slide tables. A positioning plate is provided on one side of the transverse slide rail on the base, parallel to the transverse slide rail. The positioning plate has a plurality of positioning adjustment holes. The slide adjustment mechanism is fixed to the positioning plate through the positioning adjustment holes and bolts. The slide adjustment mechanism includes a slide adjustment base, and a control lever is hinged to the slide adjustment base. The control lever is hinged to a linkage mechanism. The linkage mechanism is connected to the slide through a positioning rod and a positioning hole on the slide.

2. The tooling for assembling an exhaust aftertreatment assembly according to claim 1, characterized in that: The clamp lower positioning unit includes a connecting plate fixed on the slide table, a clamp connecting base fixed on the connecting plate, a support rod passing through the clamp connecting base, a clamp support seat fixedly connected to the upper end of the support rod, an adjusting nut on the rod body at the upper end of the clamp connecting base, guide posts on both sides of the support rod on the clamp connecting base, the upper ends of the guide posts fixedly connected to the clamp support seat, a spring on the guide post between the clamp support seat and the clamp connecting base, support rollers on both sides of the upper end of the clamp support seat, and an arc-shaped support part that can cooperate with the DPF assembly at the upper end of the clamp support seat. The support rollers and the arc-shaped support part cooperate to form the clamp limiting part.

3. The tooling for assembling an exhaust aftertreatment assembly according to claim 1, characterized in that: The post-processing assembly positioning module includes: A nozzle positioning unit includes a rotating base mounted on a slide table, a first support plate on the rotating base, a first vertical adjustment groove on the first support plate, and a second support plate with a second vertical adjustment groove matching the first vertical adjustment groove. The second support plate is bolted to the first and second vertical adjustment grooves and connected to the first support plate. The second support plate also has a first horizontal adjustment groove. A nozzle positioning pin mechanism is bolted to the first horizontal adjustment groove and mounted on the second support plate. The nozzle positioning pin mechanism includes a rotating base with a positioning pin guide seat mounted on the rotating base. A nozzle positioning pin that can cooperate with a nozzle on the aftertreatment assembly is mounted on the positioning pin guide seat. The positioning pin guide seat also has a positioning pin locking member with several locking grooves. The nozzle positioning pin also has a locking rod that can cooperate with the locking grooves.

4. The tooling for assembling an exhaust aftertreatment assembly according to claim 1, characterized in that: The post-processing assembly positioning module includes: A sensor positioning unit, comprising a sensor positioning pin mechanism, the sensor positioning pin mechanism including a sensor positioning pin capable of engaging with a sensor mounting base on a post-processing assembly, the sensor positioning pin mechanism being mounted on a slide table via bolts and an adjustable connecting plate.

5. The tooling for assembling an exhaust aftertreatment assembly according to claim 4, characterized in that: The sensor positioning unit further includes a longitudinal slide rail disposed on the slide table, the longitudinal slide rail being disposed along the width direction of the base, a slidable longitudinal slide table on the longitudinal slide rail, and the adjustable connecting plate and the sensor positioning pin mechanism being disposed on the longitudinal slide table respectively.

6. The tooling for assembling an exhaust aftertreatment assembly according to claim 4, characterized in that: The post-processing assembly positioning module includes: The SCR component support and positioning unit includes a connecting plate fixed on the slide table, an SCR component connecting base fixed on the connecting plate, a guide rod passing through the SCR component connecting base, an SCR component support seat fixedly connected to the upper end of the guide rod, an adjusting nut on the rod body at the upper end of the SCR component connecting base, guide posts on both sides of the guide rod on the SCR component connecting base, the upper ends of the guide posts fixedly connected to the SCR component support seat, a spring on the guide post between the SCR component support seat and the SCR component connecting base, support rollers on both sides of the upper end of the SCR component support seat, and an SCR component limiting plate connected to the connecting plate of the SCR component support and positioning unit.

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