A method for detecting a three-way catalytic converter housing

Abstract

The invention relates to the technical field of three-way catalytic converter housing detection, and discloses a method for three-way catalytic converter housing detection, comprising the following method steps: step one, pretreatment; step two, installation; step three, guiding; step four, fixing; and step five, detection. The cylinder body of the invention drives the swing arm at the output end to swing, and the swing arm drives the guide arm at the end to flip through the synchronous shaft, so that the guide arm can be located on both sides of the connection of the three-way catalytic converter housing, which is convenient for subsequent adjustment of the position of the three-way catalytic converter housing, and as the swing arm rotates to the top and contacts the pressure plate, the pressure plate is squeezed and moved upward to drive the sliding cover at the end to slide toward the center of the outer cover through the rocker arm, the position of the synchronous shaft on the sliding cover changes, and the synchronous shaft pulls the guide arm as a whole to approach the center, and the three-way catalytic converter housing in the center is squeezed and guided, so as to ensure that the three-way catalytic converter housing can be automatically moved to the specified clamping position, without manual adjustment, and the overall operation is simpler.

Description

Technical Field

[0001] The invention belongs to the technical field of three-way catalytic converter housing detection, and in particular relates to a method for three-way catalytic converter housing detection. Background Art

[0002] The three-way catalytic converter is an important purification device in the exhaust system of motor vehicles. The quality of its shell has a crucial impact on the normal operation and service life of the three-way catalytic converter. If the cracks, pores, inclusions and other defects in the shell are not detected in time, they may cause exhaust gas leakage, reduced catalytic efficiency and other problems.

[0003] It is found during the use of the existing three-way catalytic converter housing inspection equipment that the three-way catalytic converter housing to be inspected is clamped by a clamping plate, but the operator needs to constantly adjust the position of the three-way catalytic converter housing during the clamping process to ensure that the three-way catalyst housing can be accurately clamped, and during the clamping process, the bottom of the three-way catalytic converter housing is generally clamped and fixed. Since the clamping surface is relatively small, it is easy to be clamped unstable. When sliding occurs, the clamping assembly cannot play a clamping role, and errors may occur in subsequent inspections, affecting the inspection results.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A method for detecting a three-way catalytic converter housing comprises the following steps:

[0007] Step 1: Pretreatment, cleaning the surface of the three-way catalytic converter housing;

[0008] Step 2: Install the three-way catalytic converter housing as a whole on the support unit;

[0009] The support unit comprises a base plate, a bearing plate is mounted on the base plate, a mounting seat is welded on one side of the bearing plate, an inclined lap plate is mounted on the mounting seat, and one end of the three-way catalytic converter housing is lapped on the lap plate;

[0010] Step 3: Guiding, guiding the three-way catalytic converter housing to a designated position by means of a flipping guide unit on the support unit;

[0011] The flip guide unit comprises a cylinder body, which is mounted on a bearing plate away from a side of the mounting seat, an outer cover is mounted on the outer shell of the cylinder body, a pair of sliding covers are movably inserted into the side wall of the outer cover, a synchronous shaft is rotatably mounted inside the sliding cover, a guide arm is mounted at one end of the synchronous shaft, a swing arm is mounted at the other end of the synchronous shaft, the swing arm is connected to the output end of the cylinder body, a rocker arm is rotatably mounted on the side wall of the sliding cover, a pressure plate is mounted at the end of the rocker arm, and the pressure plate is placed above the swing arm, and a guide spring is clamped between the pressure plate and the outer cover;

[0012] Step 4: Fixing: fix the three-way catalytic converter housing to the surface of the support unit through the plug-in fixing unit on the support unit;

[0013] The plug-in fixing unit comprises a positioning cover, the positioning cover is installed on the side wall of the mounting seat, a flat plate is installed on the top of the positioning cover, a positioning column is arranged inside the positioning cover and movably plugged on the flat plate, a sleeve is movably installed inside the positioning column, a fixing bracket is installed at the bottom of the sleeve, the fixing bracket and the bottom of the bearing plate are connected to each other, a positioning plate is plugged inside the sleeve, a plug rod is installed on the top of the positioning plate, a top plate is installed on the top of the plug rod, a return spring is installed between the top plate and the inner wall of the positioning column, a fixing rod is installed on the side wall of the positioning column, a guide block is installed at the end of the fixing rod, the inclined surface of the guide block surface corresponds to the top plate, a synchronous plate is installed at the bottom of the positioning column, a plug plate is installed on the synchronous plate, the plug plate and the bottom of the pressure plate are connected to each other, and the other end of the three-way catalytic converter housing is overlapped on the flat plate;

[0014] Step 5: Detection: Use the ultrasonic detector installed on the support unit to emit ultrasonic waves into the three-way catalytic converter housing, analyze the collected echo signals, identify abnormal echo signals, and detect the quality of the three-way catalytic converter housing.

[0015] As a preferred embodiment of the present invention, a support seat is installed at the bottom of the base plate, four support legs are installed at the bottom corners of the support seat, and pulleys are embedded in the side walls of the four support legs.

[0016] As a preferred embodiment of the present invention, four outer frames are installed on the side wall of the substrate, enclosures are installed on three pairs of adjacent outer frames, mounting plates are installed on the surface of the enclosures, and the surface of the mounting plates is connected to the ultrasonic detector housing by bolts.

[0017] As a preferred embodiment of the present invention, the output end of the cylinder body movably penetrates the bottom plate of the outer cover, a T-shaped plate is installed on the side wall of the outer cover, the bottom of the T-shaped plate is overlapped on the bearing plate, the bearing plate and the T-shaped plate are screwed together by bolts, and a reinforcing plate is installed at the corner of the T-shaped plate, and the reinforcing plate is triangular.

[0018] As a preferred embodiment of the present invention, a sliding rod is installed at the output end of the cylinder body, a strip groove is provided on the swing arm, the sliding rod is slidably arranged inside the strip groove, the swing arm is in an inclined state, a bearing is clamped on the outer wall of the synchronous shaft, the outer wall of the bearing is clamped on the side wall of the sliding cover, a splint is installed on the top of the guide arm, and an anti-slip groove is provided on the surface of the splint.

[0019] As a preferred embodiment of the present invention, a limit plate is installed on the side wall of the sliding cover, the diameter of the limit plate is larger than the diameter of the sliding cover, the limit plate is located on the outer side wall of the outer cover, and a connecting seat is installed on the surface of the pressure plate, and the connecting seat is rotatably connected to the inclined rocker arm.

[0020] As a preferred embodiment of the present invention, a guide cover is installed on the top of the outer cover, a baffle is slidably installed inside the guide cover, a guide rod is installed at one end of the baffle, the guide rod movably passes through the guide cover, and the bottom of the guide rod is connected to the pressure plate, a guide spring is installed between the other end of the baffle and the guide cover, and the compression direction of the guide spring and the moving direction of the guide rod are on the same straight line.

[0021] As a preferred embodiment of the present invention, the plug plate movably penetrates the outer cover and the bearing plate, a protective cover is installed at the bottom of the bearing plate, the protective cover surrounds the outside of the synchronous plate, and a sleeve movably penetrates the synchronous plate.

[0022] As a preferred embodiment of the present invention, a through hole is provided on the top of the flat plate, the positioning column movably passes through the through hole, a side plate is installed at the bottom of the flat plate, a partition is installed on the side wall of the positioning column, the partition is slidably installed in the inner cavity opened inside the positioning cover, a positioning spring is sleeved on the positioning column, and both ends of the positioning spring are respectively clamped on the partition and connected to the inner cavity.

[0023] As a preferred embodiment of the present invention, the end of the fixing rod located outside the positioning column is chamfered, and a push plate is installed at the other end of the fixing rod. The diameter of the push plate is larger than the diameter of the fixing rod. A compression spring is clamped between the push plate and the inner wall of the positioning column, and the compression spring is sleeved on the outer wall of the fixing rod.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] By providing a flipping guide unit, when the three-way catalytic converter housing moves to the specified position, the cylinder body starts to move, driving the swing arm at the output end to swing, and the swing arm drives the connected synchronous shaft to start rotating, and the synchronous shaft can drive the guide arm at the end to flip, so that the guide arms can be located on both sides of the connection of the three-way catalytic converter housing, which is convenient for subsequent adjustment of the position of the three-way catalytic converter housing, and as the swing arm rotates to the top and contacts the pressure plate, the pressure plate can be squeezed and moved upward, and in the process of the pressure plate moving up, the sliding cover at the end is driven by the rocker arm to slide toward the center of the outer cover, the position of the synchronous shaft on the sliding cover changes synchronously, and the synchronous shaft pulls the guide arm as a whole to the center, which can squeeze and guide the three-way catalytic converter housing in the center, ensuring that the three-way catalytic converter housing can be automatically moved to the specified clamping position without manual adjustment, and the overall operation is simpler.

[0026] When the cam is in a position to move upward, the cam will move the bottom plate and the bottom plate together, and the cam will move upward to hold the bottom plate in a stable position.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In the attached picture:

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a front structural schematic diagram of the present invention;

[0031] Figure 3 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0032] Figure 4 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0033] Figure 5It is a schematic diagram of the local structure of the present invention Figure 3 ;

[0034] Figure 6 It is a schematic diagram of the local structure of the present invention Figure 4 ;

[0035] Figure 7 It is a partial cross-sectional view of the present invention;

[0036] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0037] In the figure:

[0038] 100, support unit; 101, base plate; 1011, support seat; 1012, support leg; 102, outer frame; 1021, enclosure; 1022, mounting plate; 103, bearing plate; 1031, mounting seat; 1032, lap plate; 1033, protective cover;

[0039] 200, flip guide unit; 201, cylinder body; 2011, outer cover; 2012, T-shaped plate; 2013, reinforcement plate; 202, guide arm; 2021, clamping plate; 203, synchronous shaft; 2031, swing arm; 2032, strip groove; 2033, slide rod; 2034, slide cover; 2035, bearing; 2036, limit plate; 204, rocker arm; 2041, connecting seat; 2042, pressure plate; 205, guide cover; 2051, guide rod; 2052, baffle; 2053, guide spring;

[0040] 300, plug-in fixing unit; 301, positioning cover; 3011, flat plate; 3012, side plate; 3013, through hole; 302, positioning column; 3021, partition; 3022, positioning spring; 3023, inner cavity; 303, sleeve; 3031, fixing bracket; 3032, plug rod; 3033, positioning plate; 304, top plate; 3041, return spring; 305, fixing rod; 3051, push plate; 3052, guide block; 3053, compression spring; 306, synchronization plate; 3061, plug plate;

[0041] 400. Three-way catalytic converter housing. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0043] Embodiment 1, as Figures 1 to 8 As shown, a method for detecting a three-way catalytic converter housing includes the following steps:

[0044] Step 1: pre-treatment, cleaning the surface of the three-way catalytic converter housing 400;

[0045] Step 2: Installing the three-way catalytic converter housing 400 as a whole on the supporting unit 100;

[0046] The support unit 100 includes a base plate 101, a carrier plate 103 is mounted on the base plate 101, a mounting seat 1031 is welded to one side of the carrier plate 103, and an inclined lap plate 1032 is mounted on the mounting seat 1031, and one end of the three-way catalytic converter housing 400 is lapped on the lap plate 1032;

[0047] Step 3: guiding, guiding the three-way catalytic converter housing 400 to a designated position through the flipping guide unit 200 on the support unit 100;

[0048] The flip guide unit 200 includes a cylinder body 201, which is mounted on a carrier plate 103 away from a mounting seat 1031. An outer cover 2011 is mounted on the outer shell of the cylinder body 201. A pair of sliding covers 2034 are movably inserted into the side wall of the outer cover 2011. A synchronous shaft 203 is rotatably mounted inside the sliding cover 2034. A guide arm 202 is mounted at one end of the synchronous shaft 203, and a swing arm 2031 is mounted at the other end of the synchronous shaft 203. The swing arm 2031 is connected to the output end of the cylinder body 201, and the side wall of the sliding cover 2034 is rotatably mounted with the swing arm 204. A pressure plate 2042 is mounted at the end of the rocker arm 204, and the pressure plate 2042 is placed above the swing arm 2031. A guide spring 2053 is clamped between the pressure plate 2042 and the outer cover 2011. When the three-way catalytic converter housing 400 moves to the specified position, the cylinder body 201 starts to move, driving the swing arm 2031 at the output end. When the cam 2031 is in the state of being swung upward, the sliding cover 2034 at the end is driven by the rocker arm 204 to slide toward the center of the outer cover 2011, and the position of the synchro shaft 203 on the sliding cover 2034 changes synchronously. The synchro shaft 203 pulls the guide arm 202 as a whole toward the center, and the synchro shaft 203 can be squeezed and guided to the synchro shaft 400 in the center, so as to ensure that the synchro shaft 2031 can be automatically moved to the specified clamping position without manual adjustment, and the operation is simpler as a whole.

[0049] Step 4: Fixing: fixing the three-way catalytic converter housing 400 on the surface of the support unit 100 through the plug-in fixing unit 300 on the support unit 100;

[0050] The plug-in fixing unit 300 includes a positioning cover 301, which is mounted on the side wall of the mounting seat 1031, a flat plate 3011 is mounted on the top of the positioning cover 301, a positioning column 302 is arranged inside the positioning cover 301 and is movably plugged with the flat plate 3011, a sleeve 303 is movably installed inside the positioning column 302, a fixing bracket 3031 is installed at the bottom of the sleeve 303, the fixing bracket 3031 is connected to the bottom of the bearing plate 103, a positioning plate 3033 is plugged inside the sleeve 303, a plug rod 3032 is installed on the top of the positioning plate 3033, and a plug rod 3032 is installed on the top of the plug rod 3032. A top plate 304 is installed, a return spring 3041 is installed between the top plate 304 and the inner wall of the positioning column 302, a fixing rod 305 is installed on the side wall of the positioning column 302, a guide block 3052 is installed at the end of the fixing rod 305, the inclined surface of the guide block 3052 corresponds to the top plate 304, a synchronous plate 306 is installed at the bottom of the positioning column 302, a plug plate 3061 is installed on the synchronous plate 306, the plug plate 3061 is connected to the bottom of the pressure plate 2042, and the other end of the three-way catalytic converter housing 400 is overlapped on the flat plate 3011; when the pressure plate 2042 moves upward, the pressure plate 2 042 drives the bottom plug plate 3061 and the synchronous plate 306 to move upward, and the synchronous plate 306 can drive the bottom positioning column 302 to move upward as a whole, and the positioning column 302 is inserted into the inside of the three-way catalytic converter housing 400 as a whole, and the middle part of the three-way catalytic converter housing 400 can be clamped to make the clamping stable. When the positioning column 302 drives the plug rod 3032 to move upward, the positioning plate 3033 at the bottom of the plug rod 3032 will eventually be clamped at the end of the sleeve 303, and the plug rod 3032 will not be able to move at this time, but the positioning column 302 drives the fixing rod 3032 to move upward. 05 and the guide block 3052 move upward, when the inclined surface of the guide block 3052 contacts the top plate 304, the top plate 304 squeezes the guide block 3052 to slide outward, and then the fixing rod 305 moves outward, and the end of the fixing rod 305 can finally contact the inside of the three-way catalytic converter housing 400, thereby fixing the three-way catalytic converter housing 400 in the center position; even if the fixing rod 305 and the three-way catalytic converter housing 400 slide, the fixing rod 305 is still in the inner wall of the three-way catalytic converter housing 400 and is still in a clamping state, which will not affect the subsequent detection.

[0051] Step 5: Detection: Use the ultrasonic detector installed on the support unit 100 to emit ultrasonic waves into the three-way catalytic converter housing 400, analyze the collected echo signals, identify abnormal echo signals, and detect the quality of the three-way catalytic converter housing 400.

[0052] like Figure 1 and Figure 2 As shown, in a specific embodiment, a support base 1011 is installed at the bottom of the base plate 101, and four support legs 1012 are installed at the bottom corners of the support base 1011. The side walls of the four support legs 1012 are embedded with pulleys. The four support legs 1012 serve the purpose of support, and the pulleys facilitate the subsequent movement of the entire device.

[0053] like Figure 1 and Figure 2 As shown, further, four outer frames 102 are installed on the side walls of the substrate 101, and enclosures 1021 are installed on three pairs of adjacent outer frames 102. The enclosures 1021 can protect the central inspection workpiece and reduce the impact of the external environment during the inspection process. A mounting plate 1022 is installed on the surface of the enclosure 1021, and the surface of the mounting plate 1022 is connected to the housing of the ultrasonic detector through bolts.

[0054] Embodiment 2, based on the above embodiment and the difference between this embodiment and the present embodiment is: Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the output end of the cylinder body 201 movably passes through the bottom plate of the outer cover 2011, and a T-shaped plate 2012 is installed on the side wall of the outer cover 2011. The bottom of the T-shaped plate 2012 is overlapped on the bearing plate 103, and the bearing plate 103 and the T-shaped plate 2012 are screwed together by bolts. A reinforcing plate 2013 is installed at the corner of the T-shaped plate 2012. The reinforcing plate 2013 is triangular, and the T-shaped plate 2012 is used to install the outer cover 2011, and the reinforcing plate 2013 improves the structural strength of the equipment.

[0055] like Figure 3 , Figure 4 and Figure 5As shown, in a specific embodiment, a slide bar 2033 is installed at the output end of the cylinder body 201, a strip groove 2032 is opened on the swing arm 2031, the slide bar 2033 is slidably set inside the strip groove 2032, the swing arm 2031 is in an inclined state, a bearing 2035 is clamped on the outer wall of the synchronous shaft 203, the outer wall of the bearing 2035 is clamped on the side wall of the sliding cover 2034, and a splint 2021 is installed on the top of the guide arm 202, and an anti-slip groove is opened on the surface of the splint 2021. After starting the cylinder body 201, the output end of the cylinder body 201 begins to move upward, and the slide bar 2033 at the output end slides upward synchronously at this time. The slide bar 2033 slides on the strip groove 2032 opened on the surface of the swing arm 2031, thereby driving the swing arm 2031 to swing as a whole. The swing arm 2031 drives the connected synchronous shaft 203 to start rotating. The synchronous shaft 203 slides on the inner wall of the sliding cover 2034 through the bearing 2035, and the end of the synchronous shaft 203 is connected to the guide arm 202. At this time, the guide arm 202 begins to flip, and finally a pair of guide arms 202 and the clamping plate 2021 are moved to both sides of the connection of the three-way catalytic converter housing 400, which is convenient for the subsequent adjustment of the position of the three-way catalytic converter housing 400. The side wall of the sliding cover 2034 is installed with a limit plate 2036, the diameter of which is larger than that of the sliding cover 2034, and the limit plate 2036 is located on the outer wall of the outer cover 2011. The surface of the pressing plate 2042 is installed with a connection seat 2041, and the connection seat 2041 is rotatably connected to the tilted rocker arm 204. When the pressing plate 2042 moves upward, the connection seat 2041 connected to the side wall moves upward synchronously, and the connection seat 2041 drives the rocker arm 204 to change its position, and the end of the rocker arm 204 can pull the sliding cover 2034 to slide toward the center of the outer cover 2011, and the positions of the bearing 2035 and the synchronous shaft 203 on the sliding cover 2034 change synchronously, and the synchronous shaft 203 pulls the guide arm 202 as a whole to approach the center, and the guide arm 202 and the clamping plate 2021 squeeze and guide the three-way catalytic converter housing 400 in the center.

[0056] like Figure 3 , Figure 4 and Figure 5As shown, further, a guide cover 205 is installed on the top of the outer cover 2011, and a baffle 2052 is slidably installed inside the guide cover 205. A guide rod 2051 is installed at one end of the baffle 2052. The guide rod 2051 movably penetrates the guide cover 205, and the bottom of the guide rod 2051 is connected to the pressure plate 2042. A guide spring 2053 is installed between the other end of the baffle 2052 and the guide cover 205, and the compression direction of the guide spring 2053 and the moving direction of the guide rod 2051 are both in the same straight line. When the swing arm 2031 rotates to the top, the swing arm 2031 can contact the top pressure plate 2042, and the pressure plate 2042 can be squeezed and moved upward. The guide rod 2051 on the pressure plate 2042 drives the baffle 2052 to slide upward, and the baffle 2052 slides along the inside of the guide cover 205 and squeezes the internal guide spring 2053, so that the guide spring 2053 is convenient for the later reset operation.

[0057] Embodiment 3, based on the above embodiment and the difference between this embodiment and the present embodiment is: Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the plug plate 3061 movably penetrates the outer cover 2011 and the bearing plate 103, and a protective cover 1033 is installed at the bottom of the bearing plate 103. The protective cover 1033 surrounds the outside of the synchronous plate 306, and the protective cover 1033 plays a protective purpose. The synchronous plate 306 movably penetrates the sleeve 303. A through hole 3013 is opened at the top of the flat plate 3011, and the positioning column 302 movably penetrates the through hole 3013. A side plate 3012 is installed at the bottom of the flat plate 3011. A partition 3021 is installed on the side wall of the positioning column 302. The partition 3021 is slidably installed in the inner cavity 3023 opened inside the positioning cover 301. A positioning spring 3022 is sleeved on the positioning column 302, and the two ends of the positioning spring 3022 are respectively clamped on the partition 3021 and connected to the inner cavity 3023. When the positioning column 302 moves upward, the partition 3021 on the side wall of the positioning column 302 slides inside the inner cavity 3023. At this time, the positioning spring 3022 is compressed synchronously. The positioning spring 3022 is set to limit the initial position of the positioning column 302, so that the top of the positioning column 302 and the flat plate 3011 are on the same plane, which is convenient for the flipping guide unit 200 to drive the three-way catalytic converter housing 400 to slide on the surface of the flat plate 3011.

[0058] like Figure 6 , Figure 7 and Figure 8As shown, further, the end of the fixing rod 305 located on the outside of the positioning column 302 is chamfered, and a push plate 3051 is installed at the other end of the fixing rod 305. The diameter of the push plate 3051 is larger than the diameter of the fixing rod 305. A compression spring 3053 is clamped between the push plate 3051 and the inner wall of the positioning column 302, and the compression spring 3053 is sleeved on the outer wall of the fixing rod 305. When the positioning column 302 moves upward, the return spring 3041 inside the positioning column 302 drives the top plate 304 to move upward, and the top plate 304 pulls the insertion rod 3032 to slide upward, and the positioning plate 3033 at the bottom of the insertion rod 3032 can slide inside the fixed sleeve 303. When the positioning plate 3033 moves to the very end of the sleeve 303, the insertion rod 3032 will not be able to move and will be locked. However, the positioning column 302 will also drive the fixed rod 305 and the guide block 3052 to move upward, and the return spring 3041 is stretched, and the stretched return spring 3041 is used to facilitate later reset.

[0059] The implementation principle of a method for detecting a three-way catalytic converter housing in this embodiment is as follows:

[0060] First, pretreatment is performed to clean the surface of the three-way catalytic converter housing 400 to remove impurities such as oil, dust, etc., and a suitable organic solvent can be used to wipe the housing surface. Then, the housing is numbered and its production batch and other related information are recorded for subsequent traceability.

[0061] Then, the three-way catalytic converter housing 400 is integrally mounted on the support unit 100 ; one end of the three-way catalytic converter housing 400 is overlapped on the surface of the overlap plate 1032 , and the other end is overlapped on the surface of the flat plate 3011 .

[0062] Then, the three-way catalytic converter housing 400 is guided to a designated position by flipping the guide unit 200 .

[0063] The operator needs to start the cylinder body 201, and the output end of the cylinder body 201 begins to move upward. The slide bar 2033 at the output end slides upward synchronously at this time. The slide bar 2033 slides on the strip groove 2032 opened on the surface of the swing arm 2031, thereby driving the swing arm 2031 to swing as a whole. The swing arm 2031 drives the connected synchronous shaft 203 to start rotating. The synchronous shaft 203 slides on the inner wall of the sliding cover 2034 through the bearing 2035, and the end of the synchronous shaft 203 is connected to the guide arm 202. At this time, the guide arm 202 begins to flip, and finally a pair of guide arms 202 and the clamping plate 2021 are moved to both sides of the connection of the three-way catalytic converter housing 400, which is convenient for the subsequent adjustment of the position of the three-way catalytic converter housing 400.

[0064] As the swing arm 2031 rotates to the top, the swing arm 2031 can contact the top pressure plate 2042, and the pressure plate 2042 can be squeezed to move upward. The guide rod 2051 on the pressure plate 2042 drives the baffle 2052 to slide upward, and the baffle 2052 slides along the inside of the guide cover 205 and squeezes the internal guide spring 2053, so that the guide spring 2053 is used to facilitate the subsequent resetting operation.

[0065] During the upward movement of the pressure plate 2042, the connecting seat 2041 connected to the side wall moves upward synchronously, and the connecting seat 2041 drives the rocker arm 204 to change its position. The end of the rocker arm 204 can pull the sliding cover 2034 to slide toward the center of the outer cover 2011, and the positions of the bearing 2035 and the synchronous shaft 203 on the sliding cover 2034 change synchronously. The synchronous shaft 203 pulls the guide arm 202 as a whole to the center. At this time, the guide arm 202 and the clamping plate 2021 squeeze and guide the three-way catalytic converter housing 400 in the center to ensure that the three-way catalytic converter housing 400 can be automatically moved to the specified clamping position without manual adjustment, and the overall operation is simpler.

[0066] When the pressure plate 2042 moves upward, the pressure plate 2042 drives the plug plate 3061 and the synchronization plate 306 at the bottom to move upward. The synchronization plate 306 can drive the bottom positioning column 302 to move upward as a whole, and pass the positioning column 302 through the through hole 3013 opened on the surface of the flat plate 3011. Finally, the positioning column 302 is inserted into the inside of the three-way catalytic converter housing 400, which can clamp the middle part of the three-way catalytic converter housing 400, so that the clamping is stable.

[0067] When the positioning column 302 moves upward, the return spring 3041 inside the positioning column 302 drives the top plate 304 to move upward, and the top plate 304 pulls the insertion rod 3032 to slide upward, and the positioning plate 3033 at the bottom of the insertion rod 3032 can slide inside the fixed sleeve 303. When the positioning plate 3033 moves to the very end of the sleeve 303, the insertion rod 3032 will not be able to move and will be locked. However, the positioning column 302 will also drive the fixed rod 305 and the guide block 3052 to move upward, and the return spring 3041 is stretched, and the stretched return spring 3041 is used to facilitate later reset.

[0068] When the inclined surface of the upward moving guide block 3052 contacts the top plate 304, the top plate 304 squeezes the inclined surface of the guide block 3052 to slide outward, and then the fixing rod 305 moves outward, and the end of the fixing rod 305 can finally contact the inner side of the three-way catalytic converter housing 400, thereby fixing the three-way catalytic converter housing 400 in the center position. Even if the fixing rod 305 and the three-way catalytic converter housing 400 slide, the fixing rod 305 is still in the inner wall of the three-way catalytic converter housing 400, and is still in a clamped state, which will not affect the subsequent detection. In the process of moving the fixing rod 305, the push plate 3051 on the side wall of the fixing rod 305 slides synchronously, which can compress the compression spring 3053, and the compression spring 3053 is used to facilitate the subsequent resetting operation.

[0069] And when the positioning column 302 moves upward, the partition 3021 on the side wall of the positioning column 302 slides inside the inner cavity 3023. At this time, the positioning spring 3022 is compressed synchronously. The positioning spring 3022 is set to limit the initial position of the positioning column 302, so that the top of the positioning column 302 and the flat plate 3011 are on the same plane, which is convenient for the flipping guide unit 200 to drive the three-way catalytic converter housing 400 to slide on the surface of the flat plate 3011.

[0070] Finally, the detection operation is performed, and ultrasonic waves are emitted into the three-way catalytic converter housing 400 through the ultrasonic detector installed on the support unit 100, and the collected echo signals are analyzed to identify abnormal echo signals. Under normal circumstances, there will be specific echo patterns when ultrasonic waves propagate inside the housing, such as bottom surface echoes. If there are defects, additional reflected echoes will be generated or changes in the bottom surface echo will be caused. By comparing the echo signal spectrum of the normal housing and the echo signal spectrum of the current detection housing, the amplitude, time delay, waveform and other characteristics of the echo signal are analyzed to determine whether there are defects and the approximate location of the defects.

Claims

1. A method for detecting a three-way catalytic converter housing, characterized in that: The method comprises the following steps: Step 1: pretreatment, cleaning the surface of the three-way catalytic converter housing (400); Step 2: Installing, installing the three-way catalytic converter housing (400) as a whole on the supporting unit (100); The support unit (100) comprises a base plate (101), a bearing plate (103) is mounted on the base plate (101), a mounting seat (1031) is welded to one side of the bearing plate (103), an inclined lap plate (1032) is mounted on the mounting seat (1031), and one end of the three-way catalytic converter housing (400) is lapped on the lap plate (1032); Step 3: guiding, guiding the three-way catalytic converter housing (400) to a designated position by means of a flipping guide unit (200) on the support unit (100); Step 4: Fixing: fixing the three-way catalytic converter housing (400) on the surface of the support unit (100) by means of the plug-in fixing unit (300) on the support unit (100); Step five: testing, emitting ultrasonic waves into the three-way catalytic converter housing (400) through an ultrasonic detector installed on the support unit (100), analyzing the collected echo signals, identifying abnormal echo signals, and testing the quality of the three-way catalytic converter housing (400); The flip guide unit (200) comprises a cylinder body (201), the cylinder body (201) being mounted on a bearing plate (103) at a side away from a mounting seat (1031), an outer cover (2011) being mounted on an outer shell of the cylinder body (201), a pair of sliding covers (2034) being movably plugged into the side wall of the outer cover (2011), a synchronous shaft (203) being rotatably mounted inside the sliding cover (2034), a guide arm (202) being mounted at one end of the synchronous shaft (203), a swing arm (2031) being mounted at the other end of the synchronous shaft (203), and the swing arm (2031) being mounted on the outer shell of the cylinder body (201). The sliding cover (2031) is connected to the output end of the cylinder body (201), the side wall of the sliding cover (2034) is rotatably mounted with a rocker arm (204), the end of the rocker arm (204) is mounted with a pressure plate (2042), and the pressure plate (2042) is placed above the swing arm (2031), and a guide spring (2053) is clamped between the pressure plate (2042) and the outer cover (2011); the plug-in fixing unit (300) comprises a positioning cover (301), the positioning cover (301) is mounted on the side wall of the mounting seat (1031), and a flat plate (3011) is mounted on the top of the positioning cover (301). The interior of the positioning cover (301) is provided with a positioning column (302) movably plugged into the flat plate (3011), the interior of the positioning column (302) is provided with a sleeve (303) movably installed, the bottom of the sleeve (303) is provided with a fixing bracket (3031), the fixing bracket (3031) and the bottom of the bearing plate (103) are connected to each other, the interior of the sleeve (303) is provided with a positioning plate (3033), the top of the positioning plate (3033) is provided with a plug rod (3032), the top of the plug rod (3032) is provided with a top plate (304), the top plate (304) and the positioning column ( A return spring (3041) is installed between the inner wall of the positioning column (302), a fixing rod (305) is installed on the side wall of the positioning column (302), a guide block (3052) is installed at the end of the fixing rod (305), the inclined surface of the guide block (3052) corresponds to the top plate (304), a synchronous plate (306) is installed at the bottom of the positioning column (302), an insert plate (3061) is installed on the synchronous plate (306), the insert plate (3061) and the bottom of the pressure plate (2042) are connected to each other, and the other end of the three-way catalytic converter housing (400) is overlapped on the flat plate (3011).

2. A method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: A support seat (1011) is installed at the bottom of the base plate (101), four support legs (1012) are installed at the bottom corners of the support seat (1011), pulleys are embedded in the side walls of the four support legs (1012), four outer frames (102) are installed on the side walls of the base plate (101), enclosures (1021) are installed on three pairs of adjacent outer frames (102), a mounting plate (1022) is installed on the surface of the enclosure (1021), and the surface of the mounting plate (1022) is connected to the housing of the ultrasonic detector by bolts.

3. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: The output end of the cylinder body (201) movably penetrates the bottom plate of the outer cover (2011); a T-shaped plate (2012) is installed on the side wall of the outer cover (2011); the bottom of the T-shaped plate (2012) is overlapped on the bearing plate (103); the bearing plate (103) and the T-shaped plate (2012) are screwed together by bolts; a reinforcing plate (2013) is installed at the corner of the T-shaped plate (2012); the reinforcing plate (2013) is triangular in shape.

4. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: A slide bar (2033) is installed at the output end of the cylinder body (201); a strip groove (2032) is provided on the swing arm (2031); the slide bar (2033) is slidably arranged inside the strip groove (2032); the swing arm (2031) is in an inclined state; a bearing (2035) is clamped on the outer wall of the synchronous shaft (203); the outer wall of the bearing (2035) is clamped on the side wall of the slide cover (2034); a clamping plate (221) is installed on the top of the guide arm (202); and an anti-slip groove is provided on the surface of the clamping plate (2021).

5. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: A limit plate (2036) is installed on the side wall of the sliding cover (2034), the diameter of the limit plate (2036) is larger than the diameter of the sliding cover (2034), the limit plate (2036) is located on the outer side wall of the outer cover (2011), and a connecting seat (2041) is installed on the surface of the pressure plate (2042), and the connecting seat (2041) is rotatably connected to the tilted rocker arm (204).

6. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: A guide cover (205) is installed on the top of the outer cover (2011), a baffle (2052) is slidably installed inside the guide cover (205), a guide rod (2051) is installed at one end of the baffle (2052), the guide rod (2051) movably passes through the guide cover (205), and the bottom of the guide rod (2051) is connected to the pressure plate (2042), and a guide spring (2053) is installed between the other end of the baffle (2052) and the guide cover (205), and the compression direction of the guide spring (2053) and the movement direction of the guide rod (2051) are both on the same straight line.

7. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: The plug plate (3061) movably penetrates the outer cover (2011) and the bearing plate (103); a protective cover (1033) is installed at the bottom of the bearing plate (103); the protective cover (1033) surrounds the outside of the synchronous plate (306); and a sleeve (303) movably penetrates the synchronous plate (306).

8. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: A through hole (3013) is provided on the top of the plate (3011), the positioning column (302) movably passes through the through hole (3013), a side plate (3012) is installed on the bottom of the plate (3011), a partition (3021) is installed on the side wall of the positioning column (302), the partition (3021) is slidably installed in an inner cavity (3023) provided inside the positioning cover (301), a positioning spring (3022) is sleeved on the positioning column (302), and two ends of the positioning spring (3022) are respectively clamped on the partition (3021) and connected to the inner cavity (3023).

9. The method for detecting a three-way catalytic converter housing according to claim 1, characterized in that: The end of the fixing rod (305) located outside the positioning column (302) is chamfered, and a push plate (3051) is installed at the other end of the fixing rod (305). The diameter of the push plate (3051) is larger than the diameter of the fixing rod (305). A compression spring (3053) is provided between the push plate (3051) and the inner wall of the positioning column (302), and the compression spring (3053) is sleeved on the outer wall of the fixing rod (305).

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