A comprehensive testing device and testing method for a motorcycle carburetor

Abstract

This patent application belongs to the technical field of testing equipment, specifically relating to a comprehensive testing device for motorcycle carburetors. It includes a chain conveyor belt with multiple testing mechanisms spaced apart on it. Each testing mechanism includes a rotating support and an elastic clamping part fixed to adjacent chain plates. The front end of the chain conveyor belt is a loading station, and the end is a unloading station. The angle change during chain conveying causes a change in the distance between adjacent rotating supports and elastic clamping parts, thus clamping and unloading the carburetor. The front side of the rack is the first testing station, and the middle of the rack is the second testing station. The patent also relates to a comprehensive testing method for motorcycle carburetors, which can automatically clamp, flip, and unload, and can perform multiple tests simultaneously, improving testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a comprehensive testing device and method for motorcycle carburetors. Background Technology

[0002] The carburetor is a crucial mechanical component in a motorcycle engine that mixes fuel and air in a specific ratio. During manufacturing, carburetors undergo airtightness and fuel level tests to ensure product quality. The airtightness test requires the carburetor's float to face upwards, ensuring the valve needle is closed under gravity. The fuel level test requires the carburetor's float to face downwards, and the fuel level is determined by measuring the needle valve flow rate at a specific float height.

[0003] To address the issue of needing to change the carburetor's orientation during the two aforementioned tests, existing technology (CN220170473U) discloses a tilting table for carburetor air tightness and flow rate testing. This tilting table includes a base, a vertically arranged turntable that can be driven to rotate and locked, a fixing assembly mounted on the front face of the turntable, and a drive device connected to the turntable. In use, the carburetor is mounted and fixed on the turntable using the fixing assembly. An air tightness test is performed first, and then the drive device rotates the turntable 180 degrees to complete the tilting, allowing for fuel level testing. This solution allows for both tests to be completed in a single setup, reducing labor costs and improving testing accuracy.

[0004] In the above scheme, the turnover table is a single-station design, which can only test one carburetor at a time, and the two tests must be performed sequentially at the same station. Therefore, it is impossible to achieve synchronous parallel testing of multiple carburetors, resulting in limited testing efficiency. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a comprehensive testing device for motorcycle carburetors, which can automatically clamp, flip and unload, and can perform multiple tests simultaneously, thereby improving testing efficiency.

[0006] The technical solution adopted in this invention is as follows: A comprehensive testing device for motorcycle carburetors includes a chain conveyor belt with multiple testing mechanisms spaced apart on the chain conveyor belt. Each testing mechanism includes a rotating support part and an elastic clamping part respectively fixed to an adjacent chain plate. The rotating support includes a rotating plate, on which a support plate for supporting the carburetor is provided, and a transmission gear set is provided on the rotating plate. A rack is provided on the outer side of the chain conveyor belt. As the chain conveyor belt transmits, the rack meshes with the transmission gear set, driving the rotating plate and the support plate to rotate. The front end of the chain conveyor belt is the loading station, and the end is the unloading station. The angle change that occurs during chain conveying causes the distance between adjacent rotating support parts and elastic clamping parts to change, thereby clamping and unloading the carburetor. The front side of the rack is the first test station, and the middle part of the rack is the second test station.

[0007] Working principle: When the chain conveyor belt is transmitting, the chain plates move horizontally on the upper surface, flip down to the lower surface at the end, and flip up to the upper surface at the front. This working state causes the distance between adjacent rotating support parts and elastic clamping parts to increase or decrease at the front and end. When the front is at the loading station, the chain plate corresponding to the rotating support part is in a horizontal state, and its support plate can hold the carburetor. The chain plate corresponding to the adjacent elastic clamping part is in an inclined state. As transmission progresses, it gradually becomes horizontal, thereby clamping the carburetor. Similarly, at the unloading station, the carburetor can be released, and the carburetor can slide down with the rotating support part for automatic unloading.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The above structure enables continuous testing, allowing for simultaneous air tightness and oil level testing at different workstations, thus improving testing efficiency and making it more suitable for batch testing. 2. The above structure can automatically clamp and unload the carburetor, replacing some manual operations and saving labor costs; 3. By using the combination of rack and pinion and transmission gear set, and with the help of chain plate conveyor belt, automatic flipping is achieved through feeding, without the need for an additional drive source, thus reducing equipment costs.

[0009] In a preferred embodiment of the present invention, the transmission gear set includes a first rotating shaft, a second rotating shaft, a first bevel gear, a second bevel gear, and a first gear. The first rotating shaft is arranged parallel to the transmission direction. The first bevel gear and the rotating plate are both mounted on the first rotating shaft. The second rotating shaft is arranged perpendicular to the transmission direction. The second bevel gear and the first gear are respectively mounted at both ends of the second rotating shaft. The first bevel gear meshes with the second bevel gear, and the first gear can mesh with the rack.

[0010] Beneficial effects: By setting the transmission gear set as a bevel gear reversing structure consisting of a first rotating shaft, a second rotating shaft, a first bevel gear, a second bevel gear, and a first gear, the linear motion of the rack is converted into the rotational motion of the rotating plate, thereby realizing the carburetor's flipping without changing the overall layout of the chain conveyor belt. The structure is compact, the space is used rationally, and the transmission is reliable.

[0011] In a preferred embodiment of the present invention, the second rotating shaft is rotatably mounted on the mounting block, and an elastic locking part is provided between the second rotating shaft and the first gear. The rack is provided with a top plate, which can press against the elastic locking part, so that the second rotating shaft can rotate. When it is disengaged from the top plate, the elastic locking part locks the second rotating shaft and the mounting block.

[0012] Beneficial effects: By setting up an elastic locking part and a top plate on the rack, when the rack and gear mesh for flipping drive, the top plate can simultaneously push open the elastic locking part to release the lock, allowing the second rotating shaft to rotate normally; while in the non-flipping section after disengaging from the rack, the elastic locking part automatically locks the second rotating shaft to the mounting block, preventing the rotating plate from rotating unexpectedly due to vibration during transmission or static testing, ensuring the carburetor's posture stability during oil level and air tightness tests, and improving testing accuracy and device operational reliability.

[0013] In a preferred embodiment of the present invention, the elastic locking part includes a rod body that passes through a gear. The rod body has a chamfer at its left end and a first protrusion at its upper part. The gear has a first groove, and the first protrusion is slidably connected to the first groove. A tension spring is laterally arranged in the first groove. The mounting block has a first annular groove, a second annular groove, and a rotating hole that increase in size from left to right. The second rotating shaft is installed in the rotating hole. The second rotating shaft has a slot at its left end. The first annular groove has a notch. The first protrusion has a second protrusion at its upper end, and a locking block is provided on the right side of the first protrusion. When locked, the second protrusion engages in the notch; when not locked, the second protrusion can rotate within the second annular groove.

[0014] Beneficial effects: When locked, due to the action of the tension spring, the first protrusion engages in the first groove of the gear, and the second protrusion engages in the notch. The engagement of the block and the groove restricts the rotation of the second shaft, but it does not fully enter the groove. At this time, because the second protrusion is stuck with the notch on the mounting block, neither the second shaft nor the gear can rotate. When not locked, the top plate forces the rod to move to the right through the chamfer, so that the first protrusion is partially in the first annular groove and the second protrusion is in the second annular groove. The block fully enters the groove, and the gear can drive the first shaft to rotate. No additional control components are needed. The automatic switching between locking and unlocking can be achieved solely by the mechanical action of the top plate. The structure is simple, the action is sensitive and reliable, and it has good vibration resistance, effectively preventing accidental rotation.

[0015] In a preferred embodiment of the present invention, the elastic clamping part includes a cylinder and a clamping rod. One end of the clamping rod is slidably installed in the cylinder, and a compression spring is provided in the cylinder along the sliding direction. The other end of the clamping rod can clamp the carburetor.

[0016] Beneficial effects: The above structure can not only clamp the carburetor, but also compensate for the carburetor's dimensional deviation, buffer the impact during transmission, and avoid damage to the carburetor caused by rigid clamping. The structure is simple and easy to operate and maintain.

[0017] In a preferred embodiment of the present invention, the chain conveyor belt is provided with a collection component at the unloading station.

[0018] Beneficial effects: By setting up a collection component at the unloading station, the automatically released carburetor can fall directly into the collection device without manual intervention, further automating the entire process from testing to unloading and collection, and reducing the labor intensity of workers.

[0019] This invention also provides a comprehensive testing method for motorcycle carburetors, comprising the following steps: At the loading station, the carburetor is placed on the support plate. As the chain conveyor belt transports the carburetor, the corresponding elastic clamping part clamps the carburetor. The chain conveyor belt transports the carburetor from the loading station to the first testing station for air tightness testing. The transport is stopped during the test. After the airtightness test is completed, the chain conveyor belt will transport the carburetor to the second test station. Through the rack and pinion and the transmission gear set, the rotating plate will rotate 180 degrees to conduct the oil level test. After the oil level test is completed, the chain conveyor belt will transport the carburetor to the unloading station, where the carburetor will fall into the collection assembly.

[0020] Beneficial effects: This testing method utilizes the same chain conveyor to automatically complete the continuous process of feeding, clamping, first performing airtightness testing, then automatically rotating the carburetor 180° via a gear and rack mechanism to test the oil level height, and finally unloading and collecting the carburetor. The entire process requires only one clamping of the carburetor, eliminating the need for manual rotation and handling. The testing posture transition is precise, the steps are compact, significantly shortening the comprehensive testing cycle for a single piece, effectively improving the efficiency of batch testing, and ensuring the consistency of testing conditions and the accuracy of results. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the motorcycle carburetor comprehensive testing device of the present invention; Figure 2 This is a schematic diagram of the structure of a single testing mechanism in an embodiment of the comprehensive testing device for motorcycle carburetors of the present invention; Figure 3 This is a three-dimensional sectional view of the transmission gear set in an embodiment of the motorcycle carburetor comprehensive testing device of the present invention; Figure 4 This is a partial enlarged view of the elastic locking part when locked in an embodiment of the motorcycle carburetor comprehensive testing device of the present invention; Figure 5 This is a perspective sectional view of the first gear and mounting block in an embodiment of the motorcycle carburetor integrated testing device of the present invention; Figure 6 This is a partial enlarged view of the motorcycle carburetor comprehensive testing device embodiment of the present invention when the elastic locking part is not locked.

[0022] The reference numerals in the attached drawings include: chain conveyor belt 1, chain plate 11, first plate body 12, mounting block 13, second plate body 14, rack 15, top plate 16, first annular groove 17, notch 171, second annular groove 18, rotating hole 19, rotating plate 21, support plate 22, first rotating shaft 23, second rotating shaft 24, first bevel gear 25, second bevel gear 26, first gear 27, tension spring 31, rod body 32, first protrusion 33, first slot 34, second protrusion 35, locking block 36, cylinder body 41, and clamping rod 42. Detailed Implementation

[0023] Typical embodiments embodying the features and advantages of the present invention will be specifically described in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0024] In the description of this application, the terms "first", "second", etc. are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] See Figure 1 As shown in the figure, this embodiment discloses a comprehensive testing device for motorcycle carburetors. The device includes a chain plate conveyor belt 1, which is formed by multiple chain plates 11 fixed on corresponding chains and driven to rotate cyclically by sprockets. The chain plate conveyor belt 1 has an upper horizontal section, a lower horizontal section, a front flip section, and a rear flip section. The chain plates 11 remain horizontal in the upper horizontal section and complete the flipping action when passing the front and rear ends.

[0026] Among them, see Figure 1 As shown, multiple testing mechanisms are spaced apart on the chain conveyor belt 1. Each testing mechanism includes a rotating support and an elastic clamping part, which are fixed to two adjacent chain plates 11, respectively. The rotating support is used to support and drive the carburetor to rotate, and the elastic clamping part is used to apply a flexible clamping force to the carburetor. The two work together to complete the clamping of the carburetor.

[0027] Among them, see Figure 2As shown, a rotating support is mounted on a first plate 12, which in turn is mounted on a corresponding chain plate 11. The rotating support includes a rotating plate 21, a support plate 22, and a transmission gear set. The rotating plate 21 is rotatably mounted on the chain plate 11, and the support plate 22 is fixedly positioned above the rotating plate 21 for housing the carburetor. The transmission gear set connects the rotating plate 21 and the rack 15, driving the rotating plate 21 to rotate during transmission.

[0028] Among them, see Figure 2 and 3 As shown, the transmission gear set includes a first rotating shaft 23, a second rotating shaft 24, a first bevel gear 25, a second bevel gear 26, and a first gear 27. The first rotating shaft 23 is rotatably mounted on the first plate 12. A rotating plate 21 is mounted inside the first plate 12, and the first bevel gear 25 is mounted outside the first plate 12. The axis of the first rotating shaft 23 is parallel to the transmission direction of the chain conveyor belt 1, so that the rotation of the first bevel gear 25 can drive the rotating plate 21 to rotate synchronously. A mounting block 13 is fixedly connected to the outer side of the first plate 12. The second rotating shaft 24 is rotatably mounted on the mounting block 13. The axis of the second rotating shaft 24 is perpendicular to the transmission direction. The second bevel gear 26 is mounted at one end of the second rotating shaft 24, and the first gear 27 is mounted at the other end of the second rotating shaft 24. The first bevel gear 25 and the second bevel gear 26 mesh to form a right-angle reversing transmission. The first gear 27 is located on one side of the chain conveyor belt 1 and can mesh with a rack 15 located on the outer side of the chain conveyor belt 1.

[0029] To ensure reliable locking of the flipping action, the second rotating shaft 24 is rotatably mounted on the chain plate 11 via the mounting block 13, and an elastic locking part is provided between the second rotating shaft 24 and the first gear 27. Correspondingly, a top plate 16 is provided on the rack 15, and the position of the top plate 16 corresponds to the elastic locking part.

[0030] Among them, see Figure 4 As shown, the elastic locking part includes a tension spring 31 and a rod 32. The rod 32 passes axially through the first gear 27, and the left end of the rod 32 has a chamfer for contacting and engaging with the top plate 16. A first protrusion 33 is provided on the upper part of the rod 32. A first slot 34 is provided inside the first gear 27. The first protrusion 33 slides within the first slot 34, and a tension spring 31 is arranged laterally within the first slot 34. One end of the tension spring 31 abuts against the side wall of the first slot 34, and the other end abuts against the first protrusion 33, providing a spring force for the rod 32 to return to the left. A second protrusion 35 is also provided on the upper end of the first protrusion 33, and a locking block 36 is provided on the right side of the first protrusion 33.

[0031] See Figure 5As shown, the mounting block 13 is machined with a first annular groove 17, a second annular groove 18, and a rotating hole 19 from left to right, with the radial dimensions of the three increasing sequentially. The second rotating shaft 24 is installed in the rotating hole 19 and can rotate. A slot is provided at the left end of the second rotating shaft 24. A notch 171 is provided on the first annular groove 17, and the shape of the notch 171 is adapted to the second protrusion 35.

[0032] See Figure 4 As shown, in the locked state, the tension spring 31 pushes the rod 32 to its left limit position. At this time, the first protrusion 33 is fully embedded in the first slot 34 of the first gear 27, and the second protrusion 35 is engaged in the notch 171 of the mounting block 13, so that the rod 32 and the mounting block 13 are locked in the circumferential direction; at the same time, the locking block 36 is partially embedded in the slot of the second rotating shaft 24. Since the second protrusion 35 is locked by the notch 171, and the first protrusion 33 is embedded in the gear slot, neither the gear nor the second rotating shaft 24 can rotate, thus achieving reliable locking.

[0033] See Figure 6 As shown, when the test mechanism is transmitted to the rack 15 position, the top plate 16 contacts the chamfer at the left end of the rod 32, and the top plate 16 pushes the rod 32 to move to the right against the elastic force of the tension spring 31. At this time, the first protrusion 33 is released from the constraint of the first slot 34, and the second protrusion 35 is released from the notch 171 and enters the second annular groove 18, where it can rotate freely in the circumferential direction; the locking block 36 is fully inserted into the locking groove of the second rotating shaft 24, realizing the circumferential linkage between the rod 32 and the second rotating shaft 24. At this time, the power of the first gear 27 can be transmitted to the second rotating shaft 24 through the rod 32, thereby driving the rotating plate 21 to rotate through the bevel gear set.

[0034] Among them, see Figure 1 As shown, the elastic clamping part includes a cylinder 41 and a clamping rod 42. A second plate 14 is fixedly connected to the chain plate 11 corresponding to the elastic clamping part. The cylinder 41 is fixedly installed on the second plate 14. One end of the clamping rod 42 is slidably fitted inside the cylinder 41. A compression spring is provided inside the cylinder 41 along the sliding direction. One end of the compression spring abuts against the bottom of the cylinder 41, and the other end abuts against the end of the clamping rod 42. The other end of the clamping rod 42 extends out of the cylinder 41 to press against the carburetor surface. In its natural state, the compression spring pushes the clamping rod 42 outward; when subjected to the reaction force of the carburetor, the clamping rod 42 can retract, providing a flexible clamping force.

[0035] The front end of the chain conveyor belt 1 is the loading station, and the end is the unloading station. A rack 15 is fixedly installed on the outer side of the chain conveyor belt 1, extending a certain length along the conveying direction. The front of the rack 15 corresponds to the first test station, and the middle of the rack 15 corresponds to the second test station. The first test station is used for airtightness testing, and the second test station is used for oil level testing. A collection component is also installed below the unloading station of the chain conveyor belt 1. The collection component can be a hopper or a conveyor belt (with appropriate buffer surfaces to avoid damage), used to catch falling carburetors.

[0036] In other embodiments, the rotating plate 21 is provided with side plates on both sides of the support plate 22. When the carburetor is placed on the support plate 22, the side plates can limit the two sides of the carburetor. When the carburetor is unloading, it can slide down along the two side plates, which plays a certain guiding role.

[0037] This embodiment also provides a comprehensive testing method for motorcycle carburetors based on the above-mentioned device, the specific working process of which is as follows: After the device is started, the chain conveyor belt 1 rotates in a cycle. At the loading station, the front flip section of the chain conveyor belt 1 causes an angle change between adjacent chain plates 11. At this time, the chain plate 11 where the rotating support is located has entered a horizontal state, while the chain plate 11 where the adjacent elastic clamping part is located is still in an inclined upward state, and the distance between the two increases. The operator or robot places the carburetor to be tested on the support plate 22 of the rotating support. As the chain conveyor belt 1 continues to transport, the chain plate 11 where the elastic clamping part is located gradually changes from inclined to horizontal. The end of the clamping rod 42 of the elastic clamping part gradually approaches and contacts the surface of the carburetor. The compression spring is moderately compressed, and the clamping rod 42 flexibly clamps and fixes the carburetor on the support plate 22.

[0038] The carburetor continues to move forward along the horizontal section of the upper surface of the chain conveyor belt 1. When it reaches the first test station, the chain conveyor belt 1 stops operating. The testing equipment performs an airtightness test on the carburetor.

[0039] After the airtightness test is completed, the chain conveyor belt 1 restarts, continuing to transmit the carburetor forward. When the test mechanism enters the area where the rack 15 is located, the first gear 27 engages with the rack 15. At this time, the top plate 16 simultaneously contacts the chamfer on the left end of the rod 32, pushing the rod 32 to the right. The elastic locking part switches from the locked state to the unlocked state, and the power transmission path between the second shaft 24 and the first gear 27 is connected. As the chain 11 continues to transmit, the rack 15 drives the first gear 27 to rotate. The power is transmitted through the rod 32 and the locking block 36 to the second shaft 24, and then through the second bevel gear 26 and the first bevel gear 25 to reverse direction, finally driving the first shaft 23 and the rotating plate 21 to rotate 180 degrees around the horizontal axis.

[0040] After being flipped over, the carburetor enters the second testing station via conveyor belt 1, which then stops again. This station performs an oil level test on the carburetor.

[0041] After the oil level test is completed, the chain conveyor belt 1 restarts and is reset via the rack 15, transferring the carburetor to the unloading station. At the end tilting section, the chain plate 11 containing the rotating support begins to tilt downwards, while the adjacent chain plate 11 containing the elastic clamping part remains horizontal, increasing the distance between them. The clamping rod 42 gradually detaches from the carburetor surface, and the carburetor slides naturally from the support plate 22 under gravity, falling into the collection assembly below. This completes the full testing process for one carburetor.

[0042] Throughout the testing process, the chain conveyor belt 1 can simultaneously carry multiple carburetors. Each carburetor is in different stages, including feeding, first test station inspection, flipping and transfer, second test station inspection, and unloading, achieving continuous assembly line operation and significantly improving the overall testing efficiency of carburetors. In this device, the length of the chain conveyor belt 1, the coverage area of ​​the rack 15, and the number of test stations can all be flexibly adjusted according to actual production capacity requirements. For example, if it is necessary to increase the types of test items, simply add testing equipment at the corresponding positions of the rack 15; if it is necessary to increase production capacity, the length of the chain 11 and the number of testing mechanisms can be increased. Compared with the existing single-unit flipping table, this modular architecture has greater flexibility and lower modification costs in terms of production line upgrades and capacity expansion. After this device automates most of the comprehensive testing workflow, it lays the foundation for subsequent improvements to fully automate comprehensive testing.

[0043] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A comprehensive testing device for motorcycle carburetors, characterized in that: It includes a chain conveyor belt, on which multiple testing mechanisms are spaced apart. Each testing mechanism includes a rotating support part and an elastic pressing part respectively fixed to an adjacent chain plate. The rotating support includes a rotating plate, on which a support plate for supporting the carburetor is provided. The rotating plate is provided with a transmission gear set, which includes a first rotating shaft, a second rotating shaft, a first bevel gear, a second bevel gear, and a first gear. The first rotating shaft is arranged parallel to the transmission direction. The first bevel gear and the rotating plate are both mounted on the first rotating shaft. The second rotating shaft is arranged perpendicular to the transmission direction. The second bevel gear and the first gear are respectively mounted at both ends of the second rotating shaft. The first bevel gear meshes with the second bevel gear. The first gear can mesh with a rack. A rack is provided on the outer side of the chain conveyor belt. As the chain conveyor belt transmits, the rack meshes with the first gear, driving the rotating plate and the support plate to rotate. The front end of the chain conveyor belt is the loading station, and the end is the unloading station. When the chain conveyor belt is in operation, the chain plates move horizontally on the upper surface, flip downwards to the lower surface at the end, and flip upwards to the upper surface at the front end. When the front end is in the loading station, the chain plate corresponding to the rotating support is in a horizontal state, and its support plate can hold the carburetor. The adjacent elastic clamping part corresponding to the chain plate is in an inclined state. As the conveyor belt is in operation, it gradually becomes horizontal, thereby clamping the carburetor. At the unloading station, the carburetor can be released, and the carburetor can slide down with the rotating support. The angle change that occurs during the flipping process of the chain plate during the conveyor belt causes the distance between the adjacent rotating support and the elastic clamping part to change, thereby clamping and unloading the carburetor. The front side of the rack is the first test station, and the middle part of the rack is the second test station.

2. The comprehensive testing device for motorcycle carburetors according to claim 1, characterized in that: The second rotating shaft is rotatably mounted on the mounting block. An elastic locking part is provided between the second rotating shaft and the first gear. The rack is provided with a top plate, which can press against the elastic locking part, so that the second rotating shaft can rotate. When it is disengaged from the top plate, the elastic locking part locks the second rotating shaft to the mounting block.

3. The comprehensive testing device for motorcycle carburetors according to claim 2, characterized in that: The elastic locking part includes a rod body that passes through a gear. The left end of the rod body has a chamfer. The upper part of the rod body has a first protrusion. The gear has a first groove. The first protrusion is slidably connected to the first groove. A tension spring is arranged laterally in the first groove. The mounting block has a first annular groove, a second annular groove, and a rotating hole that increase in size from left to right. The second rotating shaft is installed in the rotating hole. The left end of the second rotating shaft has a slot. The first annular groove has a notch. The upper end of the first protrusion has a second protrusion. The right side of the first protrusion has a locking block. When locked, the second protrusion engages in the notch; when not locked, the second protrusion can rotate within the second annular groove.

4. The comprehensive testing device for motorcycle carburetors according to claim 1, characterized in that: The elastic clamping part includes a cylinder and a clamping rod. One end of the clamping rod is slidably installed in the cylinder, and a compression spring is provided in the cylinder along the sliding direction. The other end of the clamping rod can clamp the carburetor.

5. The comprehensive testing device for motorcycle carburetors according to claim 1, characterized in that: The chain conveyor belt is equipped with a collection component at the unloading station.

6. A comprehensive testing method for motorcycle carburetors, comprising the comprehensive testing apparatus for motorcycle carburetors according to any one of claims 1-5, characterized in that, Includes the following steps: At the loading station, the carburetor is placed on the support plate. As the chain conveyor belt transports the carburetor, the corresponding elastic clamping part clamps the carburetor. The chain conveyor belt transports the carburetor from the loading station to the first testing station for air tightness testing. The transport is stopped during the test. After the airtightness test is completed, the chain conveyor belt will transport the carburetor to the second test station. Through the rack and pinion and the transmission gear set, the rotating plate will rotate 180 degrees to conduct the oil level test. After the oil level test is completed, the chain conveyor belt will transport the carburetor to the unloading station, where the carburetor will fall into the collection assembly.

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