阅读说明：本技术 一种用于排气管内部的三元催化自动更换装置 (Three-way catalytic automatic replacing device for exhaust pipe ) 是由 左轶 于 2021-07-27 设计创作，主要内容包括：本发明涉及汽车配件的技术领域,且公开了一种用于排气管内部的三元催化自动更换装置,包括外壳,所述外壳的表面开设有伸出口,伸出口的内侧活动连接有盖板,外壳的内部活动连接有运动机构,运动机构的外部活动连接有定位机构,外壳的内部活动连接有检测组件,外壳的内部固定连接有触点；通过外部电源给电磁铁通电,电磁铁通电周围产生的电磁场,定位铁板在电磁铁产生的电磁场中受到磁场力的作用下而运动,定位铁板运动带动移动块在导轨的外部滑动,进而使得汽车排气管三元催化的替换作业操作更加的简单,有效降低了三元催化替换作业的工作量,也降低了汽车使用成本,增加汽车排气管的使用可靠性。(The invention relates to the technical field of automobile accessories and discloses a three-way catalytic automatic replacement device for the interior of an exhaust pipe, which comprises a shell, wherein the surface of the shell is provided with an extension port, the inner side of the extension port is movably connected with a cover plate, the interior of the shell is movably connected with a movement mechanism, the exterior of the movement mechanism is movably connected with a positioning mechanism, the interior of the shell is movably connected with a detection assembly, and the interior of the shell is fixedly connected with a contact; the electromagnet is electrified through an external power supply, the electromagnetic field generated around the electrified electromagnet, the positioning iron plate moves under the action of the magnetic field force in the electromagnetic field generated by the electromagnet, and the positioning iron plate moves to drive the moving block to slide outside the guide rail, so that the operation of the ternary catalytic replacement operation of the automobile exhaust pipe is simpler, the workload of the ternary catalytic replacement operation is effectively reduced, the use cost of an automobile is also reduced, and the use reliability of the automobile exhaust pipe is improved.)

1. A three-way catalytic automatic exchange device for the inside of an exhaust pipe, comprising a casing (1), characterized in that: the surface of the shell (1) is provided with a stretching opening (2), the inner side of the stretching opening (2) is movably connected with a cover plate (3), the inner part of the shell (1) is movably connected with a moving mechanism (4), the outer part of the moving mechanism (4) is movably connected with a positioning mechanism (5), the inner part of the shell (1) is movably connected with a detection component (6), and the inner part of the shell (1) is fixedly connected with a contact (7).

2. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 1, characterized in that: the movement mechanism (4) comprises a rotating plate (401), rollers (402), a sliding rail (403), a sliding plate (404), a sliding rod (405), a connecting plate (406) and a swinging plate (407), wherein the rotating plate (401) is movably connected inside the shell (1), the rollers (402) are movably connected outside the rotating plate (401), the sliding rail (403) is fixedly connected inside the shell (1), the sliding plate (404) is slidably connected outside the sliding rail (403), the sliding rod (405) is fixedly connected outside the sliding plate (404), the connecting plate (406) is fixedly connected outside the sliding plate (404), and the swinging plate (407) is movably connected outside the connecting plate (406).

3. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 2, characterized in that: the position of the rotating plate (401) corresponds to that of the swinging plate (407) and the specification of the rotating plate is matched, the position of the rotating plate (401) corresponds to that of the sliding rod (405) and the specification of the rotating plate is matched, the roller (402) is connected with the sliding rod (405) in a sliding mode, and the sliding rail (403) is connected with the sliding plate (404) in a sliding mode.

4. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 2, characterized in that: the detection assembly comprises a detection assembly (6), a detection assembly and a detection assembly, wherein the detection assembly comprises a mounting shell (601), an insulating rod (602), a copper rod (603), piezoelectric ceramics and a spring, the mounting shell (601) is fixedly connected inside a shell (1), the piezoelectric ceramics are fixedly connected inside the mounting shell (601), the insulating rod (602) is movably connected outside the mounting shell (601), the spring is fixedly connected outside the mounting shell (601), the copper rod (603) is fixedly connected outside the insulating rod (602), two ends of the spring are respectively and fixedly connected outside the insulating rod (602) and outside the mounting shell (601), the copper rod (603) is corresponding to the piezoelectric ceramics and matched with the specification, the copper rod (603) is electrically connected with the piezoelectric ceramic, the insulating rod (602) corresponds to the sliding plate (404) in position and matches in specification, and the contact (7) corresponds to the sliding rod (405) in position and matches in specification.

5. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 1, characterized in that: the positioning mechanism (5) comprises a connecting plate (501), a mounting plate (502), a clamping groove (503), a guide rail (504), an electromagnet (505), an elastic sheet (506), a moving block (507) and a positioning iron plate (508), the external fixedly connected with connecting plate (501) of the movement mechanism (4), the external fixedly connected with mounting plate (502) of the connecting plate (501), the clamping groove (503) is formed in the inner side of the mounting plate (502), the external fixedly connected with guide rail (504) of the mounting plate (502), the external fixedly connected with electromagnet (505) of the guide rail (504), the external fixedly connected with elastic sheet (506) of the guide rail (504), the external sliding connection of the guide rail (504) is provided with the moving block (507), and the external fixedly connected with positioning iron plate (508) of the moving block (507).

6. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 5, characterized in that: the clamping groove (503) corresponds to the positioning iron plate (508) in position and is matched in specification, the guide rail (504) is connected with the moving block (507) in a sliding mode, the electromagnet (505) corresponds to the positioning iron plate (508) in position and is matched in specification, two ends of the elastic sheet (506) are fixedly connected to the outer portion of the guide rail (504) and the outer portion of the moving block (507) respectively, contact holes are formed in the inner side of the clamping groove (503), the number of the contact holes is not less than ten, and all the contact holes are uniformly distributed in the inner side of the clamping groove (503).

7. The three-way catalytic automatic change device for the inside of an exhaust pipe according to claim 2 or 5, characterized in that: the connecting plate (501) is fixedly connected to the outer portion of the sliding plate (404), a waste gas channel is formed in the inner side of the shell (1), the connecting plate (501) corresponds to the waste gas channel in position and is matched in specification, the mounting plate (502) corresponds to the waste gas channel in position and is matched in specification, and the mounting plate (502) corresponds to the extending port (2) in position and is matched in specification.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a three-way catalytic automatic replacing device for an exhaust pipe.

Background

The automobile parts are each unit forming the whole automobile and a product serving the automobile, the automobile parts are divided into a cylinder cover, a machine body, an oil pan, a piston, a connecting rod, a crankshaft, a connecting rod tile, a crankshaft tile, an exhaust pipe and the like, three-way catalysis is generally installed in the existing automobile exhaust pipe to treat automobile exhaust gas, the emission of harmful automobiles is reduced, the environmental protection performance of the automobile is improved, the common automobile three-way catalysis is installed in the exhaust pipe by taking a porous ceramic material as a carrier, but the effect of the three-way catalysis is reduced along with the prolonging of the service time of the automobile, the three-way catalysis of the automobile exhaust pipe needs to be replaced timely, the three-way catalysis in the existing exhaust pipe cannot be taken out, the great difficulty is caused to the replacement of the three-way catalysis, the exhaust pipe of the automobile needs to be replaced by a user, and the automobile using cost of the user can be increased, meanwhile, the practicability of the automobile can be reduced.

Therefore, in response to these problems, a three-way catalytic automatic exchange device for the inside of an exhaust pipe is required to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the three-way catalytic automatic replacing device used in the exhaust pipe, which has the advantages of automatic and convenient replacement, strong practicability, simple operation and reduced vehicle use cost, and solves the problems that the three-way catalytic in the existing exhaust pipe cannot be taken out, so that great difficulty is caused to the replacement of the three-way catalytic, and further the exhaust pipe of the automobile needs to be replaced by a user, so that the vehicle use cost of the user is increased, and the practicability of the automobile is reduced.

(II) technical scheme

In order to realize the purposes of automatic and convenient replacement, strong practicability, simple operation and reduced vehicle cost, the invention provides the following technical scheme: the utility model provides an automatic device that changes of ternary catalysis for inside exhaust pipe, includes the shell, the surface of shell has been seted up and has been stretched out the mouth, and the inboard swing joint that stretches out the mouth has the apron, and the inside swing joint of shell has the motion, and the outside swing joint of motion has positioning mechanism, and the inside swing joint of shell has a determine module, and the inside fixedly connected with contact of shell.

Preferably, the motion mechanism includes commentaries on classics board, gyro wheel, slide rail, slide bar, connecting plate, pendulum board, and the inside swing joint of shell has the commentaries on classics board, and the outside swing joint of commentaries on classics board has the gyro wheel, the inside fixedly connected with slide rail of shell, and the outside sliding connection of slide rail has the slide board, and the outside fixedly connected with slide bar of slide board, the outside fixedly connected with connecting plate of slide board, the outside swing joint of connecting plate has the pendulum board.

Preferably, the position of the rotating plate corresponds to that of the swinging plate, the specification of the rotating plate matches with that of the sliding rod, the position of the rotating plate corresponds to that of the sliding rod, the specification of the rotating plate matches with that of the sliding rod, the roller is connected with the sliding rod in a sliding mode, and the sliding rail is connected with the sliding plate in a sliding mode.

Preferably, the sliding plate corresponds to the extension opening in position and is matched with the extension opening in specification, the connecting plate corresponds to the extension opening in position and is matched with the extension opening in specification, the swinging plate corresponds to the extension opening in position and is matched with the extension opening in specification, the detection assembly comprises an assembly shell, an insulating rod and a copper rod, piezoelectric ceramics, a spring, assembly shell fixed connection is in the inside of shell, piezoelectric ceramics fixed connection is in the inside of assembly shell, insulating bar swing joint is in the outside of assembly shell, spring fixed connection is in the outside of assembly shell, bar copper fixed connection is in the outside of insulating bar, the both ends difference fixed connection of spring is in the outside of insulating bar and the outside of assembly shell, the bar copper is corresponding and the specification phase-match with piezoelectric ceramics's position, the bar copper is connected with the piezoelectric ceramics electricity, the insulating bar is corresponding and the specification phase-match with the position of slide, the contact is corresponding and the specification phase-match with the position of slide bar.

Preferably, the positioning mechanism comprises a connecting plate, a mounting plate, a clamping groove, a guide rail, an electromagnet, an elastic sheet, a moving block and a positioning iron plate, the moving mechanism is fixedly connected with the connecting plate outside, the connecting plate is fixedly connected with the mounting plate outside, the clamping groove is formed in the inner side of the mounting plate, the mounting plate is fixedly connected with the guide rail outside, the guide rail is fixedly connected with the electromagnet outside, the guide rail is fixedly connected with the elastic sheet outside, the guide rail is slidably connected with the moving block outside, and the moving block is fixedly connected with the positioning iron plate outside.

Preferably, the clamping groove corresponds to the positioning iron plate in position and is matched with the positioning iron plate in specification, the guide rail is connected with the moving block in a sliding mode, the electromagnet corresponds to the positioning iron plate in position and is matched with the positioning iron plate in specification, two ends of the elastic piece are fixedly connected to the outer portion of the guide rail and the outer portion of the moving block respectively, contact holes are formed in the inner side of the clamping groove, the number of the contact holes is not less than ten, and all the contact holes are evenly distributed in the inner side of the clamping groove.

Preferably, the connection plate is fixedly connected to the outer portion of the sliding plate, a waste gas channel is formed in the inner side of the shell, the connection plate corresponds to the waste gas channel in position and is matched with the waste gas channel in specification, the mounting plate corresponds to the waste gas channel in position and is matched with the waste gas channel in specification, and the mounting plate corresponds to the extension port in position and is matched with the extension port in specification.

Preferably, the copper bar, the contact, the external power supply and the driving power supply are all electrically connected with the control center, the electromagnet is electrically connected with the external power supply, and the rotating plate is electrically connected with the driving power supply.

(III) advantageous effects

Compared with the prior art, the invention provides a three-way catalytic automatic replacing device used in an exhaust pipe, which has the following beneficial effects:

1. this a device is changed automatically to ternary catalysis for inside exhaust pipe, it rotates to change the board through the drive power supply drive, it rotates to change the board and drives the swing board rotation, it rotates and drives the gyro wheel and slide the inboard slip at the slide bar to change the board, the slide bar slides and drives the slide and slide the inboard slip at the slide rail, the slide slides and drives the connecting plate motion, the connecting plate motion drives the swing board motion, the slide slides with positioning mechanism through stretching out the outside that mouthful moved the shell, and then realize the automatic convenient outside of transporting the blast pipe of ternary catalysis, the change operation when the inside ternary catalysis of blast pipe became invalid of being convenient for like this, automobile exhaust pipe has been avoided leading to whole blast pipe part replacement because of ternary catalysis replacement, automobile exhaust pipe's practicality has been improved.

2. The three-way catalytic automatic replacing device for the exhaust pipe is characterized in that an external power supply is used for electrifying an electromagnet, an electromagnetic field generated around the electromagnet is electrified, a positioning iron plate moves under the action of the magnetic field force in the electromagnetic field generated by the electromagnet, the positioning iron plate moves to drive a moving block to slide outside a guide rail, the moving block slides to enable an elastic sheet to contract until the positioning iron plate is separated from a clamping groove, so that the user can easily and conveniently place the three-way catalyst on the inner side of the clamping groove and control the external power supply to stop electrifying the electromagnet, the moving block drives the positioning iron plate to position and fasten the ternary catalyst on the inner side of the clamping groove under the action of the restoring force of the elastic sheet, therefore, the operation of the three-way catalytic replacement of the automobile exhaust pipe is simpler, the workload of the three-way catalytic replacement is effectively reduced, the use cost of the automobile is also reduced, and the use reliability of the automobile exhaust pipe is improved.

Drawings

FIG. 1 is a schematic view of the present invention with a partial cross-sectional view of the inside thereof;

FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;

FIG. 4 is a schematic view of the connection structure of the moving mechanism of the present invention;

FIG. 5 is a schematic view of a connection structure of the positioning mechanism of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 at C according to the present invention.

In the figure: 1. a housing; 2. an extension opening; 3. a cover plate; 4. a motion mechanism; 401. rotating the plate; 402. a roller; 403. a slide rail; 404. a slide plate; 405. a slide bar; 406. a connecting plate; 407. a swinging plate; 5. a positioning mechanism; 501. a connector tile; 502. mounting a plate; 503. a card slot; 504. a guide rail; 505. an electromagnet; 506. a spring plate; 507. a moving block; 508. positioning the iron plate; 6. a detection component; 601. assembling the shell; 602. an insulating rod; 603. a copper bar; 7. and (4) a contact.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-4, a three-way catalytic automatic replacing device for an exhaust pipe comprises a housing 1, an extension port 2 is formed on the surface of the housing 1, a cover plate 3 is movably connected to the inner side of the extension port 2, a moving mechanism 4 is movably connected to the interior of the housing 1, the moving mechanism 4 comprises a rotating plate 401, a roller 402, a sliding rail 403, a sliding plate 404, a sliding rod 405, a connecting plate 406 and a swinging plate 407, the rotating plate 401 is movably connected to the interior of the housing 1, the roller 402 is movably connected to the exterior of the rotating plate 401, the sliding rail 403 is fixedly connected to the interior of the housing 1, the sliding plate 404 is slidably connected to the exterior of the sliding rail 403, the sliding rod 405 is fixedly connected to the exterior of the sliding plate 404, the connecting plate 406 is fixedly connected to the exterior of the sliding plate 404, the swinging plate 407 is movably connected to the exterior of the connecting plate 406, the rotating plate 401 corresponds to the position of the swinging plate 407 and matches the specification, the rotating plate 401 corresponds to the position of the sliding rod 405 and matches the specification, the roller 402 is connected with the sliding rod 405 in a sliding mode, the sliding rail 403 is connected with the sliding plate 404 in a sliding mode, the rotating plate 401 corresponds to the swinging plate 407 in position and is matched in specification, the rotating plate 401 corresponds to the sliding rod 405 in position and is matched in specification, the roller 402 is connected with the sliding rod 405 in a sliding mode, the sliding rail 403 is connected with the sliding plate 404 in a sliding mode, the external movable connection of the moving mechanism 4 is provided with a positioning mechanism 5 for quickly and conveniently replacing the three-way catalysis effect, the internal movable connection of the shell 1 is provided with a detection assembly 6 for replacing the three-way catalysis operation to complete the retraction in-place sensing effect, and the internal fixed connection of the shell 1 is provided with a contact 7.

Example two:

referring to fig. 5-6, a three-way catalytic automatic replacing device for the inside of an exhaust pipe comprises a housing 1, an extension port 2 is arranged on the surface of the housing 1, a cover plate 3 is movably connected to the inner side of the extension port 2, a moving mechanism 4 for conveying is movably connected to the inside of the housing 1, a positioning mechanism 5 is movably connected to the outside of the moving mechanism 4, the positioning mechanism 5 comprises a connection plate 501, a mounting plate 502, a clamping groove 503, a guide rail 504, an electromagnet 505, a spring sheet 506, a moving block 507, and a positioning iron plate 508, the outside of the moving mechanism 4 is fixedly connected with the connection plate 501, the outside of the connection plate 501 is fixedly connected with the mounting plate 502, the inner side of the mounting plate 502 is provided with the clamping groove 503, the outside of the mounting plate 502 is fixedly connected with the guide rail 504, the outside of the guide rail 504 is fixedly connected with the electromagnet 505, the spring sheet 506 is fixedly connected to the outside of the guide rail 504, and the moving block 507 is slidably connected to the outside of the guide rail 504, the outer part of the moving block 507 is fixedly connected with a positioning iron plate 508, a clamping groove 503 corresponds to the positioning iron plate 508 in position and is matched in specification, a guide rail 504 is connected with the moving block 507 in a sliding manner, an electromagnet 505 corresponds to the positioning iron plate 508 in position and is matched in specification, two ends of a spring sheet 506 are respectively fixedly connected to the outer part of the guide rail 504 and the outer part of the moving block 507, the inner side of the clamping groove 503 is provided with contact holes, the number of the contact holes is not less than ten, all the contact holes are uniformly distributed on the inner side of the clamping groove 503, the inner part of the shell 1 is movably connected with a detection assembly 6 which can change the three-way catalytic operation to complete the retraction in-place sensing function, the inner part of the shell 1 is fixedly connected with a contact 7, the connecting plate 501 is fixedly connected to the outer part of the sliding plate 404, the inner side of the shell 1 is provided with a waste gas channel, the connecting plate 501 corresponds to the position and is matched in specification with the waste gas channel, and the mounting plate 502 corresponds to the waste gas channel in position and is matched in specification, the mounting plate 502 corresponds to the position of the extension opening 2 and is matched with the specification.

Example three:

referring to fig. 1-6, a three-way catalytic automatic replacing device for an exhaust pipe comprises a housing 1, an extension port 2 is formed on the surface of the housing 1, a cover plate 3 is movably connected to the inner side of the extension port 2, a moving mechanism 4 is movably connected to the interior of the housing 1, the moving mechanism 4 comprises a rotating plate 401, a roller 402, a sliding rail 403, a sliding plate 404, a sliding rod 405, a connecting plate 406 and a swinging plate 407, the rotating plate 401 is movably connected to the interior of the housing 1, the roller 402 is movably connected to the exterior of the rotating plate 401, the sliding rail 403 is fixedly connected to the interior of the housing 1, the sliding plate 404 is slidably connected to the exterior of the sliding rail 403, the sliding rod 405 is fixedly connected to the exterior of the sliding plate 404, the connecting plate 406 is fixedly connected to the exterior of the sliding plate 404, the swinging plate 407 is movably connected to the exterior of the connecting plate 406, the rotating plate 401 corresponds to the position of the swinging plate 407 and matches the specification, the rotating plate 401 corresponds to the position of the sliding rod 405 and matches the specification, the roller 402 is connected with the sliding rod 405 in a sliding way, the sliding rail 403 is connected with the sliding plate 404 in a sliding way, the outer part of the movement mechanism 4 is movably connected with the positioning mechanism 5, the positioning mechanism 5 comprises a connecting plate 501, a mounting plate 502, a clamping groove 503, a guide rail 504, an electromagnet 505, a spring sheet 506, a moving block 507 and a positioning iron plate 508, the outer part of the movement mechanism 4 is fixedly connected with the connecting plate 501, the outer part of the connecting plate 501 is fixedly connected with the mounting plate 502, the inner side of the mounting plate 502 is provided with the clamping groove 503, the outer part of the mounting plate 502 is fixedly connected with the guide rail 504, the outer part of the guide rail 504 is fixedly connected with the electromagnet 505, the outer part of the guide rail 504 is fixedly connected with the spring sheet 506, the outer part of the guide rail 504 is connected with the moving block 507, the outer part of the moving block 507 is fixedly connected with the positioning iron plate 508, the inner part of the shell 1 is movably connected with the detection component 6, the inner part of the shell 1 is fixedly connected with the contact 7, the sliding plate 404 is corresponding to the position of the extension port 2 and is matched with the specification, the connecting plate 406 corresponds to the position of the extension opening 2 and is matched with the specification, the swing plate 407 corresponds to the position of the extension opening 2 and is matched with the specification, the detection assembly 6 comprises an assembly shell 601, an insulating rod 602, a copper rod 603, piezoelectric ceramics and a spring, the assembly shell 601 is fixedly connected inside the shell 1, the piezoelectric ceramics is fixedly connected inside the assembly shell 601, the insulating rod 602 is movably connected outside the assembly shell 601, the spring is fixedly connected outside the assembly shell 601, the copper rod 603 is fixedly connected outside the insulating rod 602, two ends of the spring are respectively fixedly connected outside the insulating rod 602 and outside the assembly shell 601, the copper rod 603 corresponds to the position of the piezoelectric ceramics and is matched with the specification, the copper rod 603 is electrically connected with the piezoelectric ceramics, the insulating rod 602 corresponds to the position of the sliding plate 404 and is matched with the specification, the contact 7 corresponds to the position of the sliding rod 405 and is matched with the specification, the clamping groove 503 corresponds to the position of the positioning iron plate 508 and is matched with the specification, the guide rail 504 is connected with the moving block 507 in a sliding mode, the electromagnet 505 is corresponding to the positioning iron plate 508 in position and matched in specification, two ends of the elastic sheet 506 are fixedly connected to the outer portion of the guide rail 504 and the outer portion of the moving block 507 respectively, contact holes are formed in the inner side of the clamping groove 503, the number of the contact holes is not less than ten, all the contact holes are uniformly distributed in the inner side of the clamping groove 503, the connecting plate 501 is fixedly connected to the outer portion of the sliding plate 404, a waste gas channel is formed in the inner side of the shell 1, the connecting plate 501 is corresponding to the position and matched in specification of the waste gas channel, the mounting plate 502 is corresponding to the position and matched in specification of the extension opening 2, the copper bar 603, the contact 7, an external power supply and a driving power supply are electrically connected with the control center, the electromagnet 505 is electrically connected with the external power supply, and the rotating plate 401 is electrically connected with the driving power supply.

The device starts to be started, a user removes a cover plate 3 through a palm, simultaneously, the user controls a driving power supply through a control center to drive a rotating plate 401 to rotate, the rotating plate 401 rotates to drive a swinging plate 407 to rotate, the rotating plate 401 rotates to drive a roller 402 to slide on the inner side of a sliding rod 405, the roller 402 slides to drive the sliding rod 405 to move, the sliding rod 405 slides to drive a sliding plate 404 to slide on the inner side of a sliding rail 403, the sliding plate 404 slides to drive a connecting plate 406 to move, the connecting plate 406 moves to drive the swinging plate 407 to move, the sliding plate 404 slides to enable a positioning mechanism 5 to move to the outer part of a shell 1 through an extending port 2, when the sliding rod 405 moves until the sliding rod contacts a contact 7, the control center controls the driving power supply to stop driving the rotating plate 401 to rotate and control an external power supply to energize an electromagnet 505, an electromagnetic field generated around the electromagnet 505 is energized, and a positioning iron plate 508 moves under the action of the magnetic field generated by the electromagnet 505, the positioning iron plate 508 moves to drive the moving block 507 to slide outside the guide rail 504, the moving block 507 slides to enable the elastic sheet 506 to contract until the positioning iron plate 508 is separated from the clamping groove 503, a user can easily and conveniently place the ternary catalyst on the inner side of the clamping groove 503, meanwhile, an external power supply is controlled to stop electrifying the electromagnet 505, the moving block 507 drives the positioning iron plate 508 to position and fasten the ternary catalyst on the inner side of the clamping groove 503 under the restoring force of the elastic sheet 506, the copper rod 603, the contact 7, the external power supply and the driving power supply are all electrically connected with the control center, the electromagnet 505 is electrically connected with the external power supply, and the rotating plate 401 is electrically connected with the driving power supply.

When the three-way catalytic replacement operation is finished, the control center controls the driving power supply to drive the rotating plate 401, and similarly, the rotating plate 401 rotates to drive the swinging plate 407 to rotate, the rotating plate 401 rotates to drive the roller 402 to slide on the inner side of the sliding rod 405, the roller 402 slides to drive the sliding rod 405 to move, the sliding rod 405 slides to drive the sliding plate 404 to slide on the inner side of the sliding rail 403, the sliding plate 404 slides to drive the connecting plate 406 to move, the connecting plate 406 moves to drive the swinging plate 407 to move, the sliding plate 404 slides to enable the positioning mechanism 5 to move into the shell 1 through the extension port 2, the sliding plate 404 slides until contacting with the insulating rod 602 and driving the insulating rod 602 to slide outside the assembly shell 601, the insulating rod 602 slides to drive the copper rod 603 to move, the copper rod 603 moves to extrude the piezoelectric ceramic, so that positive and negative charges are generated at two ends of the piezoelectric ceramic, the positive and negative charges are transmitted into the copper rod 603 through the lead to form current and are controlled and sensed, and the control center controls the driving power supply to stop driving the rotating plate 401 to rotate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.