CN217992357U - Auxiliary assembly tool - Google Patents
Auxiliary assembly tool Download PDFInfo
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- CN217992357U CN217992357U CN202222011703.7U CN202222011703U CN217992357U CN 217992357 U CN217992357 U CN 217992357U CN 202222011703 U CN202222011703 U CN 202222011703U CN 217992357 U CN217992357 U CN 217992357U
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Abstract
The application discloses supplementary erecting tool for assemble the engine relates to engine manufacturing technical field. This supplementary assembly tool includes: a support; the air valve flapping assembly comprises a flapping rod and a swing mechanism, the swing mechanism is arranged on the support and is positioned below the support, the swing mechanism is connected with the first end of the flapping rod, and the swing mechanism can rotate relative to the support to adjust the position of the flapping rod; and the driving mechanism is arranged on the support and is connected with the rotating mechanism, and the driving mechanism drives the beating rod to reciprocate through the rotating mechanism so that the second end of the beating rod repeatedly beats the valve of the engine. The scheme can solve the problem that the assembly efficiency of the existing engine is low.
Description
Technical Field
The application belongs to the technical field of engine manufacturing, and particularly relates to an auxiliary assembling tool.
Background
The engine is used to expand the gas by the heat energy generated by the combustion of gasoline (diesel oil) in sealed cylinder, and further to drive the piston to do work to generate mechanical energy. At present, engines have been applied to various fields such as vehicles and aviation as energy conversion devices.
In the process of assembling the engine, after the valve is assembled, the valve needs to be patted by simulating the actual operation working condition so as to ensure that the valve spring and the valve lock clamp are installed in place; and, after the valve is patted, need carry out airtight detection to the valve to whether the detection valve split collet installed in place. In practical application, after the valve, the valve spring, the valve collet and the like of the engine are assembled, the valve is usually flapped by a tool such as a leather hammer and the like manually, but the method causes the assembly efficiency of the engine to be low.
SUMMERY OF THE UTILITY MODEL
The purpose of the embodiment of the application is to provide an auxiliary assembly tool, which can solve the problem that the assembly efficiency of the existing engine is low.
In order to solve the technical problem, the present application is implemented as follows:
the embodiment of the application provides an auxiliary assembly tool for assembling an engine, including:
a support;
the air valve flapping assembly comprises a flapping rod and a slewing mechanism, the slewing mechanism is arranged on the support and is located below the support, the slewing mechanism is connected with the first end of the flapping rod, and the slewing mechanism can rotate relative to the support to adjust the position of the flapping rod;
actuating mechanism, actuating mechanism set up in the support, actuating mechanism with rotation mechanism links to each other, actuating mechanism passes through rotation mechanism drive the patting rod carries out reciprocating motion, so that the second end of patting rod patts repeatedly the valve of engine.
In the embodiment of the application, after the valve assembly of the engine is installed, the mobile device moves the auxiliary assembling tool to the beating position of the valve, the swing mechanism rotates relative to the support to adjust the position of the beating rod, so that the beating rod is opposite to the valve, then the whole auxiliary assembling tool is lowered to the second end of the beating rod to be pressed on the valve end face of the engine, the driving mechanism drives the beating rod to reciprocate through the swing mechanism, so that the second end of the beating rod repeatedly beats the valve of the engine, the purpose of automatically beating the valve is achieved, and the assembling efficiency of the engine is further improved. Therefore, the problem that the assembly efficiency of the existing engine is low can be solved.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary assembly tool disclosed in an embodiment of the present application;
fig. 2 is a schematic view of a partial structure of an auxiliary assembly tool disclosed in an embodiment of the present application.
Description of reference numerals:
100-bracket, 110-bottom wall, 111-boss;
200-valve flap assembly, 210-flap lever, 220-swing mechanism, 221-swing cylinder, 222-swing disc, 223-connecting piece, 224-supporting piece, 225-second roller, 230-quick-change disc, 240-supporting plate;
300-drive mechanism, 310-drive source, 320-timing belt group;
400-test assembly, 410-sealing sleeve, 420-first elastic member, 430-pneumatic joint, 440-first seal, 450-second seal;
500-a camshaft;
600-a first roller;
700-a connecting shaft;
800-a second elastic member;
900-guide shaft.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The auxiliary assembly tool provided in the embodiments of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1 to 2, the embodiment of the present application provides an auxiliary assembly tool for assembling an engine, but may also be used for assembling other structures, and is not limited in particular here. The auxiliary assembly tool includes a bracket 100, a valve slapping assembly 200, and a drive mechanism 300. Alternatively, the auxiliary assembly tool may be provided on a robot or other mobile device to facilitate movement.
The valve slapping assembly 200 includes a slapping lever 210 and a swing mechanism 220, the swing mechanism 220 is disposed on the frame 100, the swing mechanism 220 is located below the frame 100, the swing mechanism 220 is connected to a first end of the slapping lever 210, and the swing mechanism 220 can rotate relative to the frame 100 to adjust the position of the slapping lever 210. Because the valve arrangement modes of different types of engines are different, or the valve arrangement modes of different cylinders of the same engine are different, when the auxiliary assembly tool drives the patting rod 210 to move above the valve, a certain position deviation may exist between the patting rod 210 and the valve, and at this time, the swing mechanism 220 rotates to adjust the relative position of the patting rod 210 and the valve.
The driving mechanism 300 is disposed on the bracket 100, the driving mechanism 300 is connected to the swing mechanism 220, and the driving mechanism 300 drives the patting bar 210 to reciprocate through the swing mechanism 220, so that the second end of the patting bar 210 repeatedly patts the valve of the engine.
In the embodiment of the application, after the valve assembly of the engine is mounted, the moving device moves the auxiliary assembling tool to the tapping position of the valve, the rotating mechanism 220 rotates relative to the bracket 100 to adjust the position of the tapping rod 210, so that the tapping rod 210 is opposite to the valve, then the whole auxiliary assembling tool is lowered to the second end of the tapping rod 210 to be pressed on the end surface of the valve of the engine, the driving mechanism 300 drives the tapping rod 210 to reciprocate through the rotating mechanism 220, so that the second end of the tapping rod 210 taps the valve of the engine repeatedly, thereby achieving the purpose of tapping the valve automatically, and further improving the assembling efficiency of the engine. Therefore, the problem that the assembly efficiency of the existing engine is low can be solved.
In an alternative embodiment, the revolving mechanism 220 includes a revolving cylinder 221 and a revolving disc 222, the revolving cylinder 221 is disposed on the support 100, an output end of the revolving cylinder 221 is connected to the revolving disc 222, a first end of the tapping rod 210 is connected to the revolving disc 222, the revolving cylinder 221 and the tapping rod 210 are respectively disposed on two opposite sides of the revolving disc 222, and the output end drives the tapping rod 210 to rotate through the revolving disc 222 to adjust the position of the tapping rod 210. Optionally, due to the characteristic of stable operation of the revolving cylinder 221, the rotation position of the revolving disc 222 can be precisely controlled, so that the relative position between the tapping rod 210 and the valve can be precisely adjusted, which is beneficial to improving the tapping efficiency of the tapping rod 210. Of course, the rotary disk 222 may be driven by other driving sources, such as a motor, etc., but the motor does not drive the rotary disk 222 to rotate as well as the rotary cylinder 221.
The revolving cylinder 221 may be directly connected to the driving mechanism 300, but during the driving mechanism 300 drives the revolving mechanism 220 to reciprocate, the revolving cylinder 221 acts on the support 100, which may easily cause the bottom wall 110 of the support 100 to deform. Therefore, optionally, the turning mechanism 220 further comprises a connecting member 223, the connecting member 223 is connected between the driving mechanism 300 and the turning cylinder 221, namely, the connecting member 223 is located between the support 100 and the turning cylinder 221, the connecting member 223 acts on the bottom surface of the support 100 during the reciprocating motion of the turning mechanism 220 driven by the driving mechanism 300, the contact area between the connecting member 223 and the bottom surface of the support 100 is large, so that the acting force between the connecting member 223 and the bottom surface of the support 100 can be dispersed, the protection of the support 100 is facilitated, and the area of the surface of the connecting member 223 facing the turning cylinder 221 is large, so as to facilitate the arrangement of the turning cylinder 221.
In the process that the driving mechanism 300 drives the patting bar 210 to reciprocate through the swing mechanism 220, when the connection member 223 comes into contact with the bottom surface of the support 100, the swing cylinder 221 is easily damaged by the force of the swing plate 222 acting on the output end of the swing cylinder 221 at this time due to the tendency of the inertia of the swing plate 222 to move further. Based on this, further optionally, the revolving mechanism 220 further comprises a support 224, the support 224 is supported between the connecting member 223 and the revolving disk 222, the support 224 is in sliding fit with the revolving disk 222, and the revolving disk 222 can slide around its own rotation axis relative to the support 224. When the connecting member 223 contacts the bottom surface of the bracket 100, the supporting member 224 prevents the rotation disk 222 from further moving, thereby protecting the rotation cylinder 221.
Optionally, the swing mechanism 220 further includes a second roller 225, the second roller 225 is disposed at an end of the support member 224, and the second roller 225 is in rolling engagement with the swing disk 222, so that the swing disk 222 can flexibly rotate relative to the support member 224.
In another alternative embodiment, the valve slapping assembly 200 further comprises a quick-change disc 230, the quick-change disc 230 being disposed between the rotary disc 222 and the slap lever 210, the quick-change disc 230 being used to replace the slap lever 210. The beating rod 210 is arranged on the bottom surface of the quick-change disc 230, and due to the fact that the valve arrangement modes of engines of different types are different, the beating rod 210 is convenient to replace through the quick-change disc 230, so that the beating rod is matched with the valve of the engine which is assembled at present, and the working efficiency of an auxiliary assembling tool is improved. Alternatively, quick-change disk 230 includes a first portion that is removably coupled to pivot disk 222 and a second portion that is coupled to beater bar 210, the second portion being removable from the first portion when beater bar 210 needs to be replaced, thereby allowing replacement of beater bar 210.
Optionally, the valve slapping assembly 200 further includes a supporting plate 240, the quick-change disc 230 and the slapping lever 210 are respectively disposed on opposite sides of the supporting plate 240, the quick-change disc 230 and the slapping lever 210 are both connected to the supporting plate 240, and the supporting plate 240 provides a setting basis for the quick-change disc 230 and the slapping lever 210, so as to facilitate setting of the slapping lever 210.
In yet another alternative embodiment, the auxiliary assembly tool further includes a detection assembly 400, the detection assembly 400 includes a sealing sleeve 410, a first elastic member 420 and a pneumatic connector 430, the first elastic member 420 and the sealing sleeve 410 are both sleeved outside the tapping rod 210, the first elastic member 420 is located between the swing mechanism 220 and the first end of the sealing sleeve 410, a port of the second end of the sealing sleeve 410 is used for being in sealing fit with an upper seat of a valve spring of an engine, the pneumatic connector 430 is disposed on the sealing sleeve 410, and the pneumatic connector 430 is communicated with an inner cavity of the sealing sleeve 410, and when the tapping rod 210 moves to be separated from the valve, a sealed cavity is formed among the upper seat of the valve spring, the sealing sleeve 410 and the tapping rod 210. After the tapping rod 210 finishes tapping, the robot or the mobile device drives the auxiliary assembly tool to integrally lift, at this time, because the port of the second end of the sealing sleeve 410 is in sealing fit with the upper seat of the valve spring of the engine, the sealing sleeve 410 is kept still, and after the tapping rod 210 moves to be separated from the valve of the engine, a sealing cavity is formed among the upper seat of the valve spring, the sealing sleeve 410 and the tapping rod 210, at this time, high-pressure gas is continuously introduced into the sealing cavity through the pneumatic connector 430, if the flow of the introduced high-pressure gas is small, it is indicated that the valve collet of the engine is installed in place, and the gap between the valve collet and the valve and the upper seat of the valve spring is small, so that the technical requirements are met; if the high-pressure gas flow is large, the valve collet is not installed in place, the clearance between the valve collet and the valve and between the valve collet and the upper seat of the valve spring is large, and at the moment, an alarm can be given out through the detection result of the flow sensor so as to inform manual processing.
In a further alternative embodiment, the detecting assembly 400 further includes a first sealing member 440 and a second sealing member 450, the first sealing member 440 is disposed at a port of the second end of the sealing sleeve 410, the first sealing member 440 is configured to be in sealing engagement with the valve spring upper seat, the second sealing member 450 is disposed at a port of the first end of the sealing sleeve 410, and the second sealing member 450 is configured to be in sealing engagement with the beater bar 210, so as to improve the sealing performance of the sealing cavity, and thus, the accuracy of the detecting assembly 400 is improved.
In the embodiment where the valve slapping assembly 200 further comprises the quick-change disc 230, the pneumatic connector 430 may be connected to the quick-change disc 230 through a connecting pipe, and high-pressure gas is introduced into the sealed cavity through the quick-change disc 230, so as to reduce the manufacturing cost of the auxiliary assembly tool.
In another alternative embodiment, the auxiliary assembly tool further includes a cam shaft 500, a first roller 600, a connecting shaft 700, and a second elastic member 800, the cam shaft 500 is disposed on the bracket 100, the driving mechanism 300 is connected to the cam shaft 500, the first roller 600 is disposed at a first end of the connecting shaft 700, the first roller 600 is in rolling fit with an eccentric wheel of the cam shaft 500, the second elastic member 800 is sleeved outside the connecting shaft 700, and the second elastic member 800 is located between the bottom wall 110 of the bracket 100 and the first end of the connecting shaft 700. Optionally, the first end of the connecting shaft 700 has a first position-limiting portion, the first position-limiting portion is located at an end of the first end of the connecting shaft 700 away from the first roller 600, and the second elastic element 800 is located between the bottom wall 110 of the bracket 100 and the first position-limiting portion, so that the second elastic element 800 deforms. The bottom wall 110 is provided with a through hole through which a second end of the connecting shaft 700 is connected to the swing mechanism 220. At actuating mechanism 300 drive camshaft 500 pivoted in-process, first gyro wheel 600 is rolling fit with camshaft 500's eccentric wheel all the time, and the distance between eccentric wheel and camshaft 500's the pivot is nearer, and the camshaft 500's that makes structure is comparatively compact and the reliability is better, so actuating mechanism 300 drives through this kind of mode and beats pole 210 and carry out reciprocating motion, is favorable to improving the motion stability who beats pole 210, can also improve auxiliary assembly tool's compact structure nature simultaneously.
In a further alternative embodiment, the auxiliary assembly tool further includes a guide shaft 900, the bottom wall 110 is provided with a guide hole, one end of the guide shaft 900 is connected to the swing mechanism 220, and the guide shaft 900 is in guiding fit with the guide hole, so as to provide a motion guide for the reciprocating motion of the swing mechanism 220 and avoid the flapping rod 210 from being misaligned with the valve due to the tilting of the swing mechanism 220. Alternatively, the other end of the guide shaft 900 may have a second stopper portion, and when the tapping lever 210 is in contact with the valve, the second stopper portion may prevent the swing mechanism 220 and the tapping lever 210 from further descending to protect the valve. Optionally, a side of the bottom wall 110 of the bracket 100 facing away from the swing mechanism 220 has a protrusion 111, and the guide hole is opened in the protrusion 111 to reinforce a hole wall of the guide hole, thereby protecting the guide hole.
The number of the through holes may be one or at least two, and when the number of the through holes is one, the connecting shaft 700 needs to be disposed on the central shaft of the rotating mechanism 220, so as to prevent the rotating mechanism 220 from deflecting; in addition, the rotation mechanism 220 has a certain weight, and is connected to the rotation mechanism 220 only through one connecting shaft 700, so that the second elastic member 800 is subjected to a large force, which may easily cause damage to the second elastic member 800 for a long time. Therefore, optionally, the number of the through holes is at least two, each through hole is sequentially arranged at intervals along the extending direction of the camshaft 500, and the first roller 600, the connecting shaft 700 and the second elastic member 800 are all arranged in one-to-one correspondence with the through holes, at this time, the at least two connecting shafts 700 are connected with the rotating mechanism 220, which is beneficial to dispersing the acting force of the rotating mechanism 220, thereby prolonging the service life of the second elastic member 800.
Alternatively, the number of the guide holes may be one, or may be at least two, and when the number of the guide holes is one, the guide holes may be disposed between adjacent through holes. Optionally, the number of the guide holes is at least two, each guide hole is sequentially arranged at intervals along a direction perpendicular to the axis of the camshaft 500, and the guide shafts 900 are arranged in one-to-one correspondence with the guide holes, at this time, the at least two guide shafts 900 are connected with the swing mechanism 220, which is beneficial to increase the connection area between the swing mechanism 220 and the bracket 100, thereby dispersing the acting force of the swing mechanism 220. Further optionally, the guiding holes are disposed adjacent to the through holes, that is, each guiding hole and each through hole are sequentially arranged at intervals in the circumferential direction, so as to further improve the operation stability of the swing mechanism 220.
In an alternative embodiment, the driving mechanism 300 includes a driving source 310 and a timing belt group 320, and the driving source 310 is disposed in the accommodating space of the rack 100 to improve the utilization rate of the accommodating space. The set of timing belts 320 may be disposed in the accommodating space, but the set of timing belts 320 needs to occupy a certain space, which may make other structures in the accommodating space difficult to arrange. Therefore, alternatively, the timing belt group 320 is disposed outside the support 100, the timing belt group 320 is disposed side by side with the support 100, one end of the timing belt group 320 is connected to the driving source 310, and the other end of the timing belt group 320 is connected to the camshaft 500, thereby saving space in the accommodation space for arrangement of other structures; meanwhile, the whole auxiliary assembling tool can be more compact, so that the space utilization rate of the auxiliary assembling tool is improved.
Optionally, the synchronous belt set 320 includes a first synchronous wheel, a second synchronous wheel and a synchronous belt, the first synchronous wheel is connected with the output shaft of the driving source 310, the second synchronous wheel is connected with one end of the cam shaft 500, and the synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel, because the belt transmission has the characteristic of stable operation, the driving force of the driving source 310 is transmitted to the cam shaft 500 by the synchronous belt set 320, which is beneficial to improving the stability of the reciprocating motion of the beating rod 210.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An auxiliary assembly tool for assembling an engine, comprising:
a bracket (100);
the valve flapping assembly (200) comprises a flapping rod (210) and a swing mechanism (220), the swing mechanism (220) is arranged on the support (100), the swing mechanism (220) is positioned below the support (100), the swing mechanism (220) is connected with the first end of the flapping rod (210), and the swing mechanism (220) can rotate relative to the support (100) to adjust the position of the flapping rod (210);
actuating mechanism (300), actuating mechanism (300) set up in support (100), actuating mechanism (300) with rotation mechanism (220) link to each other, actuating mechanism (300) pass through rotation mechanism (220) drive clap pole (210) and carry out reciprocating motion, so that clap the second end of pole (210) and clap repeatedly the valve of engine.
2. The auxiliary assembly tool as claimed in claim 1, wherein the swing mechanism (220) comprises a swing cylinder (221) and a swing disc (222), the swing cylinder (221) is disposed on the support (100), an output end of the swing cylinder (221) is connected to the swing disc (222), a first end of the patting rod (210) is connected to the swing disc (222), the swing cylinder (221) and the patting rod (210) are respectively disposed on two opposite sides of the swing disc (222), and the output end drives the patting rod (210) to rotate through the swing disc (222) to adjust the position of the patting rod (210).
3. Auxiliary assembly tool according to claim 2, wherein the swing mechanism (220) further comprises a connecting member (223) and a supporting member (224), the connecting member (223) is connected between the driving mechanism (300) and the swing cylinder (221), the supporting member (224) is supported between the connecting member (223) and the swing disc (222), the supporting member (224) is in sliding fit with the swing disc (222), and the swing disc (222) is slidable relative to the supporting member (224) around its own rotation axis.
4. Auxiliary assembly tool according to claim 2, characterized in that the valve slapping assembly (200) further comprises a quick change disc (230), the quick change disc (230) being arranged between the swivelling disc (222) and the slapping lever (210), the quick change disc (230) being used for replacing the slapping lever (210).
5. The auxiliary assembling tool according to claim 1, further comprising a detecting component (400), wherein the detecting component (400) comprises a sealing sleeve (410), a first elastic member (420) and a pneumatic connector (430), the first elastic member (420) and the sealing sleeve (410) are both sleeved outside the slap rod (210), the first elastic member (420) is located between the swing mechanism (220) and the first end of the sealing sleeve (410), a port at the second end of the sealing sleeve (410) is used for sealing and matching with an upper seat of a valve spring of the engine, the pneumatic connector (430) is arranged on the sealing sleeve (410), and the pneumatic connector (430) is communicated with an inner cavity of the sealing sleeve (410),
under the condition that the beating rod (210) moves to be separated from the valve, a sealed cavity is formed among the valve spring upper seat, the sealing sleeve (410) and the beating rod (210).
6. The auxiliary assembly tool of claim 5, wherein the detection assembly (400) further comprises a first seal (440) and a second seal (450), the first seal (440) being disposed at a port of the second end of the seal sleeve (410), the first seal (440) being for sealing engagement with the valve spring upper seat, the second seal (450) being disposed at a port of the first end of the seal sleeve (410), the second seal (450) being for sealing engagement with the slap rod (210).
7. The auxiliary assembly tool according to claim 1, further comprising a cam shaft (500), a first roller (600), a connecting shaft (700), and a second elastic member (800), wherein the cam shaft (500) is disposed on the bracket (100), the driving mechanism (300) is connected to the cam shaft (500), the first roller (600) is disposed at a first end of the connecting shaft (700), the first roller (600) is in rolling fit with an eccentric of the cam shaft (500), the second elastic member (800) is sleeved outside the connecting shaft (700), the second elastic member (800) is located between a bottom wall (110) of the bracket (100) and a first end of the connecting shaft (700), the bottom wall (110) is provided with a through hole, and a second end of the connecting shaft (700) passes through the through hole to be connected to the swing mechanism (220).
8. The auxiliary assembly tool according to claim 7, further comprising a guide shaft (900), wherein the bottom wall (110) is provided with a guide hole, one end of the guide shaft (900) is connected to the rotation mechanism (220), and the guide shaft (900) is in guiding fit with the guide hole.
9. The auxiliary assembling tool according to claim 8, wherein the number of the through holes is at least two, each of the through holes is sequentially spaced along an extending direction of the camshaft (500), and the first roller (600), the connecting shaft (700), and the second elastic member (800) are all disposed in one-to-one correspondence with the through holes, the number of the guide holes is at least two, each of the guide holes is sequentially spaced along a direction perpendicular to an axis of the camshaft (500), and the guide shafts (900) are disposed in one-to-one correspondence with the guide holes, and the guide holes are disposed adjacent to the through holes.
10. The auxiliary assembling tool as claimed in claim 7, wherein the driving mechanism (300) includes a driving source (310) and a timing belt group (320), the driving source (310) is disposed in the receiving space of the holder (100), the timing belt group (320) is disposed outside the holder (100), the timing belt group (320) is disposed side by side with the holder (100), one end of the timing belt group (320) is connected to the driving source (310), and the other end of the timing belt group (320) is connected to the camshaft (500).
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CN202222011703.7U CN217992357U (en) | 2022-08-01 | 2022-08-01 | Auxiliary assembly tool |
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CN202222011703.7U CN217992357U (en) | 2022-08-01 | 2022-08-01 | Auxiliary assembly tool |
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CN217992357U true CN217992357U (en) | 2022-12-09 |
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CN202222011703.7U Active CN217992357U (en) | 2022-08-01 | 2022-08-01 | Auxiliary assembly tool |
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