CN212420217U - Welding clamping structure for vehicle SCR (Selective catalytic reduction) and mixer assembly - Google Patents
Welding clamping structure for vehicle SCR (Selective catalytic reduction) and mixer assembly Download PDFInfo
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- CN212420217U CN212420217U CN202020682781.8U CN202020682781U CN212420217U CN 212420217 U CN212420217 U CN 212420217U CN 202020682781 U CN202020682781 U CN 202020682781U CN 212420217 U CN212420217 U CN 212420217U
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Abstract
The utility model belongs to the field of automobile SCR welding, in particular to a welding clamping structure of an automobile SCR mixer assembly, which comprises a mixer positioning module, a mixer barrel, an SCR barrel fixing module, a tail pipe positioning and NOx sensor seat positioning module which are sequentially arranged from left to right, wherein the mixer positioning module comprises a first air cylinder, a pull rod, a hoop positioning block, a mixer barrel flanging positioning block, a clamping jaw and a first moving component, the mixer barrel and the SCR barrel fixing module comprise a mixer barrel supporting block, an SCR barrel supporting block and a barrel pressing block, the tail pipe positioning and NOx sensor seat positioning module comprises a tail pipe mounting seat body, an NOx sensor seat mounting seat body and a second moving component, the utility model adopts automatic welding, improves the quality of products, improves the welding strength of the products, and effectively reduces the unqualified condition of the products, meanwhile, the labor cost is saved.
Description
Technical Field
The utility model belongs to car SCR welding field, concretely relates to automobile-used SCR adds blender assembly welding clamping structure.
Background
The existing catalytic converter mostly adopts DOC plus DPF plus SCR three checkpoints to remove harmful substances in automobile tail gas, SCR plus mixer assembly is an important component of the catalytic converter, SCR is totally called as 'selective catalytic reduction' technology, and is a mode of treating the tail gas of the diesel engine, the SCR working process is to spray urea aqueous solution into an exhaust pipe through a spray pump and a nozzle, mix the urea aqueous solution with the tail gas in the exhaust pipe, the mixed gas enters the catalytic converter, the mixer atomizes and decomposes the urea aqueous solution and mixes the urea aqueous solution with the exhaust gas of the diesel engine, the urea atomized liquid in the tail gas is accelerated and decomposed into ammonia gas under the combined action of high-temperature gas and a catalyst on the catalytic converter, and the ammonia gas reacts with nitrogen oxides in the tail gas, and discharging the generated nitrogen, thereby reducing the content of nitrogen oxides in the tail gas to reach the emission standard.
The SCR adds the blender assembly to make in the past and adopts manual welding, has the difference in all aspects such as size, angle, causes and can't install the use, and the uniformity of product can't guarantee, and inefficiency can not effectual satisfy the customer delivery period, adopts manual welding moreover, and SCR adds the blender assembly and can have certain gap, leads to after the welding, and its inside still has a lot of thin seams, and the connection compactness of structure is not strong, breaks off easily.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a vehicle SCR adds blender assembly welding clamping structure adopts automatic weld, has improved the quality of product, has improved the welding strength of product, has effectively reduced the unqualified condition of product, has saved the human cost simultaneously.
The utility model adopts the technical proposal that: a welding and clamping structure of an SCR (selective catalytic reduction) mixer assembly for a vehicle comprises a mixer positioning module, a mixer barrel, an SCR barrel fixing module, a tail pipe positioning and NOx sensor seat positioning module which are sequentially arranged from left to right, wherein the mixer positioning module comprises a first air cylinder, a pull rod, a hoop positioning block, a mixer barrel flanging positioning block, a clamping jaw and a first moving assembly, the first air cylinder is connected with the pull rod, the pull rod is connected with the clamping jaw, the first moving assembly comprises a first guide rail sliding block assembly, a first limiting block and a fourth air cylinder, the fourth air cylinder controls the first guide rail sliding block assembly to slide to the first limiting block, the mixer barrel and the SCR barrel fixing module comprise a mixer barrel supporting block, an SCR barrel supporting block and a barrel pressing block, and the rear ends of the mixer barrel supporting block and the SCR barrel supporting block are respectively provided with a barrel pressing block, the cylinder pressing block is connected with a second cylinder respectively, the tail pipe positioning and NOx sensor seat positioning module comprises a tail pipe mounting seat body, a NOx sensor seat mounting seat body and a second moving assembly, a tail pipe pressing block, a fifth cylinder and a tail pipe supporting block for fixing a tail pipe are arranged on the tail pipe mounting seat body, the fifth cylinder is connected with the tail pipe pressing block, the NOx sensor seat mounting seat body comprises a seventh cylinder and a NOx sensor seat positioning pin, the end, close to the tail pipe positioning module, of the seventh cylinder is provided with the NOx sensor seat positioning pin, the second moving assembly comprises a second limiting block, a second guide rail sliding block assembly and a third cylinder, and the third cylinder controls the second sliding block guide rail assembly to slide to the second limiting block.
Further, a nozzle holder positioning module is arranged right in front of the cylinder pressing block close to the mixer positioning module, the nozzle holder positioning module comprises a nozzle holder positioning pin and a sixth cylinder, and a nozzle holder positioning pin is arranged at one end, close to the SCR cylinder positioning module, of the sixth cylinder.
Furthermore, the nozzle holder positioning module, the tail pipe positioning module and the NOx sensor holder positioning module are respectively provided with a first handle and a second handle which are controlled, the first handle is connected with the nozzle holder positioning pin, and the second handle is connected with the NOx sensor holder positioning pin.
Furthermore, the hoop positioning block and the mixer cylinder flanging positioning block are positioned on the same vertical plane.
Further, the mixer positioning module, the mixer cylinder and SCR cylinder fixing module, and the tail pipe positioning and NOx sensor seat positioning module are respectively fixed on the same plane through bolts.
The utility model has the advantages that: adopt pneumatic drive, the mixer assembly, SCR assembly, the subassembly of giving vent to anger are lived to centre gripping that can be simple quick, carry out effective control to subassembly size, position, ensure that the part does not shift in assembly and welding process, do not warp, have improved the finished product qualification rate, workman's that alleviates intensity of labour, simultaneously, avoided because there is the gap between the welding time, lead to the insecure condition of final connection to stability when improving the welding.
Drawings
Fig. 1 is a front view of the structure of the present invention;
FIG. 2 is a rear view of the structure of the present invention;
FIG. 3 is a schematic view of a welding and clamping structure of the SCR, mixer and exhaust main assembly.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the welding clamping structure for the vehicle SCR mixer assembly comprises a mixer positioning module, a mixer cylinder, an SCR cylinder fixing module, a tail pipe positioning module and an NOx sensor seat positioning module, which are sequentially arranged from left to right, wherein the mixer positioning module comprises a first cylinder 1, a pull rod 2, a hoop positioning block 3, a mixer cylinder flanging positioning block 4, a clamping jaw 5 and a first moving assembly, the first cylinder 1 is connected with the pull rod 2, the pull rod 2 is connected with the clamping jaw 5, the first moving assembly comprises a first guide rail slider assembly 12, a first limiting block 13 and a fourth cylinder 11, the fourth cylinder 11 controls the first guide rail slider assembly 12 to slide to the first limiting block 13, the mixer cylinder and the SCR cylinder fixing module comprise a mixer cylinder supporting block 14, an SCR cylinder supporting block 15 and a cylinder pressing block 6, the mixer cylinder supporting block 14, the SCR cylinder supporting block 15 and the cylinder pressing block 6, The rear ends of the SCR cylinder supporting blocks are respectively provided with a cylinder pressing block 6, the cylinder pressing blocks 6 are respectively connected with a second cylinder 7, the tail pipe positioning and NOx sensor seat positioning module comprises a tail pipe mounting seat body, a NOx sensor seat mounting seat body and a second moving assembly, a tail pipe pressing block 16, a fifth cylinder 17 and a tail pipe supporting block 18 for fixing a tail pipe are arranged on the tail pipe mounting seat body, the fifth cylinder 17 is connected with the tail pipe pressing block 16, the NOx sensor seat mounting seat body comprises a seventh cylinder 23 and a NOx sensor seat positioning pin 22, one end, close to the tail pipe positioning module, of the seventh cylinder 23 is provided with the NOx sensor seat positioning pin 22, the second moving assembly comprises a second limiting block 8, a second guide rail sliding block assembly 9 and a third cylinder 10, the third cylinder 10 controls the second guide rail sliding block assembly 9 to slide to the second limiting block 8, and a nozzle seat positioning module is arranged right in front of the cylinder pressing block close to the mixer positioning module, the nozzle holder positioning module comprises a nozzle holder positioning pin 19 and a sixth air cylinder 20, wherein the nozzle holder positioning pin 19 is arranged at one end, close to the SCR cylinder positioning module, of the sixth air cylinder 20, the nozzle holder positioning pin 19 is arranged at one end, close to the SCR cylinder positioning module, the nozzle holder positioning module and the tail pipe positioning and NOx sensor holder positioning module are respectively provided with a first handle 21 and a second handle 24 which are controlled, the first handle 21 is connected with the nozzle holder positioning pin 19, the second handle 24 is connected with the NOx sensor holder positioning pin 22, the hoop positioning block 3 and the mixer cylinder flanging positioning block 4 are located on the same vertical plane, and the mixer positioning module, the mixer cylinder and SCR cylinder fixing module and the tail pipe positioning and NOx sensor holder positioning module are respectively fixed on the same plane through bolts.
The workflow of this embodiment is: placing a mixer cylinder 26 on the mixer assembly on a mixer cylinder support block 14, inserting an inner hole of an anchor ear 25 into an anchor ear positioning block 3, rotating the mixer cylinder 26, pulling a first handle 21 to enable a nozzle seat positioning pin 19 to be inserted into a central hole of a nozzle seat 27, ventilating a sixth air cylinder 20 and then tightly pushing, ventilating a first air cylinder 1, moving a pull rod 2 leftwards to drive a clamping jaw 5 to clamp the outer side of the flanging end of the mixer cylinder 26, and enabling the inner side to be tightly attached to the mixer cylinder flanging positioning block 4; after the fourth cylinder 11 is ventilated, the tool is moved to the first limiting block 13 through the first guide rail sliding block assembly 12.
The SCR cylinder 28 on the SCR assembly is placed on the SCR cylinder supporting block 15, and the left side of the SCR cylinder 28 is inserted into the necking end of the mixer cylinder 26.
The upper tail pipe 30 of the air outlet component is placed on the tail pipe supporting block 18, the second handle 24 is pulled, the positioning pin 22 of the NOx sensor seat is inserted into the central hole of the NOx sensor seat 29, the seventh cylinder 23 is tightly pressed after ventilation, and the fifth cylinder 17 drives the tail pipe pressing block 16 to tightly press the tail pipe 30 after ventilation.
After the third cylinder 10 ventilates, make the frock move to 8 departments of second stopper through second guide rail sliding block set spare 9, each part all assembles the target in place, and after the second cylinder 7 ventilates, the upset back of two barrel compact heap 6 compresses tightly blender barrel 26, SCR barrel 28, uses the welding equipment of robot to weld one shot forming at last, guarantees size, welding quality uniformity.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A welding and clamping structure of an SCR (selective catalytic reduction) mixer assembly for a vehicle is characterized by comprising a mixer positioning module, a mixer barrel, an SCR barrel fixing module and a tail pipe positioning and NOx sensor seat positioning module which are sequentially arranged from left to right, wherein the mixer positioning module comprises a first air cylinder, a pull rod, a hoop positioning block, a mixer barrel flanging positioning block, a clamping jaw and a first moving assembly, the first air cylinder is connected with the pull rod, the pull rod is connected with the clamping jaw, the first moving assembly comprises a first guide rail sliding block assembly, a first limiting block and a fourth air cylinder, the fourth air cylinder controls the first guide rail sliding block assembly to slide to the first limiting block, the mixer barrel and the SCR barrel fixing module comprise a mixer barrel supporting block, an SCR barrel supporting block and a barrel pressing block, the rear ends of the mixer barrel supporting block and the SCR barrel supporting block are respectively provided with a barrel pressing block, the cylinder pressing block is connected with a second cylinder respectively, the tail pipe positioning and NOx sensor seat positioning module comprises a tail pipe mounting seat body, a NOx sensor seat mounting seat body and a second moving assembly, a tail pipe pressing block, a fifth cylinder and a tail pipe supporting block for fixing a tail pipe are arranged on the tail pipe mounting seat body, the fifth cylinder is connected with the tail pipe pressing block, the NOx sensor seat mounting seat body comprises a seventh cylinder and a NOx sensor seat positioning pin, the end, close to the tail pipe positioning module, of the seventh cylinder is provided with the NOx sensor seat positioning pin, the second moving assembly comprises a second limiting block, a second guide rail sliding block assembly and a third cylinder, and the third cylinder controls the second sliding block guide rail assembly to slide to the second limiting block.
2. The welding clamping structure for the SCR mixer assembly for the vehicle as recited in claim 1, wherein a nozzle holder positioning module is disposed right in front of the cylinder compressing block of the mixer positioning module, the nozzle holder positioning module comprises a nozzle holder positioning pin and a sixth air cylinder, and a nozzle holder positioning pin is disposed at one end of the sixth air cylinder, which is close to the SCR cylinder positioning module.
3. The welding fixture structure of claim 2, wherein the nozzle holder positioning module, the tailpipe positioning module and the NOx sensor holder positioning module are respectively provided with a first handle and a second handle, the first handle is connected with the nozzle holder positioning pin, and the second handle is connected with the NOx sensor holder positioning pin.
4. The welding clamp structure of claim 1, wherein the anchor ear positioning block and the mixer barrel flanging positioning block are located on a same vertical plane.
5. The welding clamp structure of claim 1, wherein the mixer positioning module, the mixer cylinder and SCR cylinder fixing module, and the tail pipe positioning and NOx sensor seat positioning module are respectively fixed on the same plane by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682781.8U CN212420217U (en) | 2020-04-29 | 2020-04-29 | Welding clamping structure for vehicle SCR (Selective catalytic reduction) and mixer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682781.8U CN212420217U (en) | 2020-04-29 | 2020-04-29 | Welding clamping structure for vehicle SCR (Selective catalytic reduction) and mixer assembly |
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| CN212420217U true CN212420217U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020682781.8U Active CN212420217U (en) | 2020-04-29 | 2020-04-29 | Welding clamping structure for vehicle SCR (Selective catalytic reduction) and mixer assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289987A (en) * | 2021-11-24 | 2022-04-08 | 东风佛吉亚排气控制技术有限公司 | Welding tool for components in mixer |
| CN115091044A (en) * | 2022-08-26 | 2022-09-23 | 成都航天万欣科技有限公司 | Welding tool and welding method for aluminum alloy thin-wall box |
-
2020
- 2020-04-29 CN CN202020682781.8U patent/CN212420217U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289987A (en) * | 2021-11-24 | 2022-04-08 | 东风佛吉亚排气控制技术有限公司 | Welding tool for components in mixer |
| CN115091044A (en) * | 2022-08-26 | 2022-09-23 | 成都航天万欣科技有限公司 | Welding tool and welding method for aluminum alloy thin-wall box |
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