Adjustable tool for detecting water tightness of automobile air conditioner pipeline

Abstract

The utility model discloses an adjustable tool for detecting the water tightness of an automobile air conditioner pipeline, which comprises a fixed seat, a screw rod is assembled on the fixed seat in a threaded manner, one end of the screw rod is provided with a plug, and the plug is used for plugging the end part of the pipeline to be detected; a clamping mechanism is further arranged on the fixed seat, the clamping mechanism is provided with a limiting clamping plate which can be arranged right opposite to the plug, and by operating the clamping mechanism, a pressing plate on the to-be-detected pipeline and the end of the pipeline can be fixedly clamped between the limiting clamping plate and the plug; the distance between the end plug of the screw rod and the limiting clamping plate can be changed by twisting the screw rod. The tool has the beneficial effects that the detection requirements of air conditioner pipelines with pressing plates of different thicknesses can be met only by replacing the screw rod with the plug of the corresponding size according to the sectional size of the air conditioner pipeline and then adjusting the screw rod, the universality of the tool is greatly improved, the number of types needing to be stored of the plug is reduced, and the cost is reduced. And therefore, the space occupied by plug storage is reduced, and the time required for plug type selection in the earlier stage is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning pipeline sealing detection for automobiles, and particularly relates to an adjustable tooling for water sealing detection of automobile air-conditioning pipelines. Background Technique

[0002] Automobile air-conditioning pipelines are mainly used to transport the refrigerant medium of the air-conditioning system, so that the refrigerant can circulate between the compressor, evaporator and condenser, thereby ensuring that the evaporator can transfer the cold quantity to the interior of the automobile in a heat exchange manner, and enabling the temperature inside the vehicle to be well adjusted. To ensure the sealing quality of the pipeline, the air-conditioning pipeline needs to be subjected to a sealing detection before actual installation. In the prior art, by installing a plug at the end of the automobile pipeline, then placing the automobile pipeline and the plug in water, and finally ventilating the automobile pipeline, it is checked whether there are bubbles on the surface of the automobile pipeline, so as to judge the sealing performance of the automobile pipeline.

[0003] The traditional tooling plug includes a fixed seat and a plug that is threadedly engaged with the fixed seat. Since the models of automobiles are different, the specifications of the air-conditioning pipelines used are also different. Specifically, the thickness of the pressing plate / connector at the end of the air-conditioning pipeline and the width cross-sectional dimension of the air-conditioning pipeline are different. This makes the reserve quantity of plugs extremely large. During actual tooling, a large amount of extra time is required to find the corresponding plug, which greatly affects the production efficiency, and the storage of plugs also occupies a large amount of space. Summary of the Utility Model

[0004] In view of this, the utility model provides an adjustable tooling for water sealing detection of automobile air-conditioning pipelines, aiming to be able to adaptively adjust according to different specifications of air-conditioning pipelines and improve the versatility of the tooling.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] An adjustable tooling for water sealing detection of automobile air-conditioning pipelines, characterized in that: it includes a fixed seat, a screw rod is threadedly assembled on the fixed seat, a plug is provided at one end of the screw rod, and the plug is used to block the end of the pipeline to be tested; a clamping mechanism is provided on the fixed seat, and the clamping mechanism has a limit clamping plate that can be arranged opposite to the plug. By operating the clamping mechanism, the pressing plate on the pipeline to be tested and the end of the pipeline can be fixedly clamped between the limit clamping plate and the plug; by rotating the screw rod, the distance between the plug at its end and the limit clamping plate can be changed.

[0007] With the above structure, by adjusting the screw rod back and forth, the water detection tooling for air-conditioning pipelines with different thickness end pressing plates can be satisfied. By replacing the screw rod with plugs of different sizes, air-conditioning pipelines with different cross-sectional dimensions can be adapted. The reserve quantity of plugs is greatly reduced, the storage space is reduced, and the versatility of the tooling is improved.

[0008] Preferably, the fixing seat is provided with a threaded mounting hole along the length direction, the screw is threadedly mounted in the threaded mounting hole, a locking nut is threadedly mounted on the screw, and the fixing seat is arranged between the plug and the locking nut. With the above structure, by screwing the locking nut to be close to the fixing seat, the distance between the plug and the limit clamping plate can be locked, thereby ensuring that the pressure plate at the end of the automobile air conditioning pipeline is close to the end of the plug.

[0009] Preferably, the clamping mechanism includes a first clamping plate rotatably arranged at the bottom of the fixing seat, a first limit card plate is vertically arranged at one end of the first clamping plate close to the plug, the plug is located between the first limit card plate and the fixing seat, a first return spring is arranged between the fixing seat and the first clamping plate, and the first return spring continuously applies a return force to the first clamping plate so that the first limit card plate always faces the plug. With the above structure, the return force applied by the first return spring enables the end pressure plate of the air-conditioning pipeline to stably rest between the first limit card plate and the plug, thereby ensuring that the air-conditioning pipeline and the plug are installed more tightly, thereby improving the accuracy of the water inspection.

[0010] Preferably, the clamping mechanism includes a second clamping plate symmetrically arranged on the upper and lower sides of the fixing seat, the second clamping plate is provided with a second limit clamping plate in the vertical direction at one end close to the plug, the fixing seat is provided with four first through holes in the vertical direction, the four first through holes are distributed in a rectangular shape, and the second clamping plate is close to the fixing seat on one side thereof and corresponds to two movable holes and two mounting grooves, the movable holes and the mounting grooves are distributed at intervals, a pressing rod is passed through the first through hole, one end of the pressing rod is provided with a threaded mounting section, the threaded mounting section is threadedly assembled in the mounting groove, a pressing plate is installed on the other end of the pressing rod by a screw, and a second return spring is mounted on the pressing rod between the pressing plate and the second clamping plate, and the second return spring continuously applies force to the second clamping plate so that the second clamping plate is always close to the fixing seat. By adopting the above structure, by pressing the pressing plate, the second clamping plate can be opened toward the upper and lower ends, thereby facilitating the installation of the end of the air-conditioning pipe on the plug. By loosening the pressing plate, the air-conditioning pipe can be clamped between the second clamping plates, and at the same time, the end pressure plate of the air-conditioning pipe can be pressed against between the second clamping plate and the plug, thereby ensuring a tighter installation between the air-conditioning pipe and the plug, thereby improving the accuracy of the water inspection.

[0011] Preferably, the first clamping plate is formed with a transfer part in the vertical direction, the transfer part is provided with a transfer hole, the fixing seat is formed with a second through hole in the width direction, and a rotation pin is inserted into the second through hole and the transfer hole. The above structure enables the first clamping plate to rotate, thereby facilitating the installation of the air conditioning pipeline.

[0012] Preferably, the rotating pin is arranged at one end close to the plug, the first return spring is arranged at one end close to the locking nut, the first clamping plate is vertically provided with a limiting boss upwards, the bottom of the fixed seat is provided with a limiting groove corresponding to the limiting boss, the first return spring is arranged between the limiting boss and the limiting groove, and the first return spring is a compression spring. Pressing the first clamping plate can make the first limiting clamping plate rotate downwards, and releasing the first return spring can make the first limiting clamping plate face the plug. With the above structure, due to the restoring force of the first return spring, the first clamping plate can always face the plug, thereby ensuring that when installing the air-conditioning pipeline, the end pressing plate of the air-conditioning pipeline can always be clamped between the first limiting clamping plate and the plug.

[0013] Preferably, one end of the first clamping plate close to the locking nut is inclined downwards with an inclined section, and a handle is arranged at the top of the fixed seat, and one end of the handle close to the locking nut is inclined upwards. With the above structure, it is convenient for the operator to press the first clamping plate, and thus it is convenient to install the end of the air-conditioning pipeline on the plug.

[0014] Preferably, the screw rod is provided with a ventilation hole along its length direction, and the ventilation hole penetrates through the plug. With the above structure, it is convenient to ventilate the inside of the air-conditioning pipeline, and thus it is convenient for water detection.

[0015] Preferably, the top of the first limiting clamping plate is provided with a first clamping groove, and the first clamping groove is in an arc structure, which is used for clamping the air-conditioning pipeline to be detected. With the above structure, it is convenient to clamp and fix the air-conditioning pipeline.

[0016] Preferably, the second limiting clamping plate is provided with a second clamping groove, the second clamping groove is in an arc structure, and the second clamping grooves of the upper and lower two second limiting clamping plates can be combined into a circular structure, and the circular structure is used for clamping the air-conditioning pipeline to be detected. With the above structure, it is convenient to clamp and fix the air-conditioning pipeline.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. By using the adjustable tooling for water tightness detection of the automotive air-conditioning pipeline provided by the present utility model, it is only necessary to replace the screw rod with a plug of corresponding size according to the cross-sectional size of the air-conditioning pipeline, and then by adjusting the screw rod, the detection requirements of products with the same cross-sectional size but different pressing plate thicknesses can be met, greatly increasing the versatility of the tooling, thereby reducing the number of types of plugs to be stored, further reducing the space occupied by plug storage, and speeding up the time required for plug selection in the early stage.

[0019] 2. Through two forms of clamping mechanisms, when the air-conditioning pipeline is connected to the plug, the pressing plate at the end of the air-conditioning pipeline can be tightly installed between the limit clamping plate and the plug, so as to ensure a closer connection between the air-conditioning pipeline and the plug, and further ensure the accuracy of the water inspection. Brief Description of the Drawings

[0020] Figure 1 is a schematic three-dimensional structure diagram of the first adjustable tooling for water tightness detection of automotive air-conditioning pipelines;

[0021] Figure 2 is Figure 1 an exploded schematic diagram of;

[0022] Figure 3 is Figure 1 a reference diagram of the actual use state of;

[0023] Figure 4 is Figure 3 a cross-sectional schematic diagram of;

[0024] Figure 5 is a schematic three-dimensional structure diagram of the second adjustable tooling for water tightness detection of automotive air-conditioning pipelines;

[0025] Figure 6 is Figure 5 an exploded schematic diagram of;

[0026] Figure 7 is to show Figure 5 a cross-sectional schematic diagram of the working principle;

[0027] Figure 8 is Figure 5 a reference diagram of the actual use state of;

[0028] Figure 9 is Figure 8 a cross-sectional schematic diagram of. Detailed Embodiment

[0029] The following further describes the present invention in conjunction with the embodiments and the drawings.

[0030] The adjustable tooling for water tightness detection of automotive air-conditioning pipelines provided in this embodiment can be used for at least sealing detection Figure 3 and Figure 8 the air-conditioning pipeline 12 shown, and a pressing plate 12a is assembled at the end of the air-conditioning pipeline 12.

[0031] As Figure 1 、 Figure 3 、 Figure 5 and Figure 8As shown in the figure, an adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline includes a fixed seat 1. A screw rod 2 is threadedly installed on the fixed seat 1. One end of the screw rod 2 is fixedly installed with a plug 2a. In this embodiment, the plug 2a is welded or integrally formed at the end of the screw rod 2. A clamping mechanism A is also provided on the fixed seat 1. The clamping mechanism A has a limit clamping plate that can be arranged opposite to the plug 2a. By operating the clamping mechanism A, the pressing plate 12a on the air-conditioning pipeline 12 to be tested and the end of the air-conditioning pipeline 12 can be fixedly clamped between the limit clamping plate and the plug 2a. By turning the screw rod 2, the distance between the plug 2a at its end and the limit clamping plate can be changed. In this embodiment, two types of clamping mechanisms A are provided, and the limit clamping plates respectively correspond to the first limit clamping plate 4a and the second limit clamping plate 6a on the two types of clamping mechanisms A.

[0032] With such a design, by adjusting the screw rod 2 back and forth, the water detection tooling for the air-conditioning pipeline 12 with different thickness pressing plates 12a can be satisfied. By replacing the screw rod 2 with plugs 2a of different sizes, the air-conditioning pipeline 12 with different cross-sectional sizes can be adapted, greatly improving the versatility of the adjustable tooling for detecting the water tightness of the automotive air-conditioning pipeline, thereby reducing the reserve quantity of the plugs 2a, reducing the storage space, and also reducing the time required to find the plugs 2a of the corresponding size, improving the overall tooling efficiency.

[0033] As Figure 1 and Figure 2 shown, the fixed seat 1 is formed with a threaded mounting hole 1a along the length direction. The screw rod 2 is threadedly assembled in the threaded mounting hole 1a. A fastening nut 3 is threadedly assembled on the screw rod 2, and the fixed seat 1 is arranged between the plug 2a and the locking nut 3. By rotating the screw rod 2, the plug 2a can be moved back and forth relative to the fixed seat 1. By rotating the locking nut 3 and abutting it against the fixed seat 1, the distance between the plug 2a and the fixed seat 1 can be fixed.

[0034] As Figure 1 and Figure 5 shown, the plug 2a has a cylindrical structure and a circular counterbore 2a1 in the middle. The end of the air-conditioning pipeline 12 is sleeved in the circular counterbore 2a1.

[0035] Furthermore, as Figure 2 and Figure 4 shown, the screw rod 2 is formed with a ventilation hole 2b along the length direction, and the ventilation hole 2b can penetrate the plug 2a. With such a design, the inside of the air-conditioning pipeline 12 can be ventilated, which is convenient for water detection. As Figure 9 shown, when the plug 2a is not connected to the air inlet end of the air-conditioning pipeline 12, at this time, the plug 2a only plays a role of blocking, and the screw rod 2 does not need to be equipped with a ventilation hole 2b.

[0036] In this embodiment, the threaded mounting hole 1a and the screw rod 2 are both made of stainless steel to ensure the overall service life.

[0037] As Figure 1 shown, the clamping mechanism A includes a first clamping plate 4 rotatably mounted at the bottom of the fixed seat 1. One end of the first clamping plate 4 close to the plug 2a is vertically and upwardly formed with a first limit clamping plate 4a. The plug 2a is located between the first limit clamping plate 4a and the fixed seat 1. In this way, when the end of the air-conditioning pipeline 12 is sleeved inside the circular sunk platform 2a1, the pressing plate 12a at the end of the air-conditioning pipeline 12 can be clamped between the first limit clamping plate 4a and the plug 2a, thereby ensuring a tighter installation between the end of the air-conditioning pipeline 12 and the plug 2a. A first return spring 5 is also installed between the fixed seat 1 and the first clamping plate 4. The first return spring 5 continuously applies a return force to the first clamping plate 4 so that the first limit clamping plate 4a always faces the plug 2a.

[0038] Specifically, as Figure 2 shown, the first clamping plate 4 is vertically and upwardly formed with a transfer portion 4b. A transfer hole 4b1 is provided on the transfer portion 4b. The fixed seat 1 is formed with a second through hole 1c in the width direction. A rotating pin 10 is passed through the second through hole 1c and the transfer hole 4b1, so as to ensure that the first clamping plate 4 is rotatably mounted at the bottom of the fixed seat 1. In this embodiment, the rotating pin 10 is installed at one end close to the plug 2a, and the first return spring 5 is installed at one end close to the locking nut 3. And the first return spring 5 is a compression spring. A limit boss 4c is vertically and upwardly formed on the first clamping plate 4. A limit groove 1d is formed at the position corresponding to the limit boss 4c at the bottom of the fixed seat 1. The first return spring 5 is installed between the limit boss 4c and the limit groove 1d. With such a design, pressing the first clamping plate 4 can make the first limit clamping plate 4a rotate downward, thereby facilitating the installation of the air-conditioning pipeline 12. Releasing the first return spring 5 can make the first limit clamping plate 4a face the plug 2a, thereby clamping the pressing plate 12a at the end of the air-conditioning pipeline 12 between the first limit clamping plate 4a and the plug 2a.

[0039] In addition, the installation positions of the rotating pin 10 and the first return spring 5 can be swapped, but in this case, the first return spring 5 is a tension spring.

[0040] Furthermore, one end of the first clamping plate 4 close to the locking nut 3 is inclined downwardly formed with an inclined section 4d. A handle 11 is fixedly installed on the top of the fixed seat 1 through bolts. One end of the handle 11 close to the locking nut 3 is inclined upwardly arranged. With such a design, it is convenient for the operator to grasp.

[0041] On the top of the first limit clamping plate 4a, a first clamping groove 4a1 is also formed. The first clamping groove 4a1 has an arc-shaped structure and is used to clamp the air-conditioning pipeline 12 to ensure the stable installation of the air-conditioning pipeline 12 on the adjustable tooling for water tightness detection of the automotive air-conditioning pipeline.

[0042] As Figures 5 to 9 shown, the second clamping mechanism A provided in this embodiment includes second clamping plates 6 symmetrically installed on the upper and lower sides of the fixed seat 1. At the ends of the two second clamping plates 6 close to the plug 2a, second limit clamping plates 6a are formed vertically towards the other side. Four first through holes 1b are formed in the fixed seat 1 in the vertical direction. The four first through holes 1b are distributed in a rectangular shape at the four corners of the top of the fixed seat 1. On the side of the second clamping plate 6 close to the fixed seat 1, two movable holes 6b and two mounting grooves 6c are formed corresponding to the positions of the four first through holes 1b, and each movable hole 6b and mounting groove 6c are spaced apart. A pressing rod 7 is inserted into each first through hole 1b. One end of the pressing rod 7 is formed with a threaded mounting section 7a, and each threaded mounting section 7a is threadedly assembled in the mounting groove 6c. The other end of the pressing rod 7 is installed with a pressing plate 8 by screws. In this embodiment, two pressing rods 7 in the same installation direction are connected by a pressing plate 8, that is, a pressing plate 8 is fixedly installed at each of the upper and lower ends of the fixed seat 1. A second return spring 9 is also sleeved on the pressing rod 7 between the pressing plate 8 and the second clamping plate 6. In this example, the second return spring 9 is also a compression spring, and the second return spring 9 can continuously apply force to the second clamping plate 6 so that the second clamping plate 6 always clings to the fixed seat 1. Designed in this way, pressing the pressing plate 8 can make the second clamping plate 6 move away from the fixed seat 1, which is convenient for the installation of the air-conditioning pipeline 12.

[0043] As Figure 5 and Figure 6 shown, second clamping grooves 6a1 are formed on both second limit clamping plates 6a. The second clamping grooves 6a1 have an arc-shaped structure, and the upper and lower second clamping grooves 6a1 can be combined into a circular structure. The circular structure is used to clamp the air-conditioning pipeline 12, and then the end of the air-conditioning pipeline 12 is stably sleeved on the circular sink 2a1.

[0044] Combining the above structures, the working principle of the adjustable tooling for water tightness detection of the automotive air-conditioning pipeline is as follows:

[0045] When the air-conditioning pipeline 12 needs to be subjected to a water tightness test, first select the screw 2 of the plug 2a with a corresponding size according to the cross-sectional size of the air-conditioning pipeline 12, threadedly assemble the screw 2 into the threaded mounting hole 1a, and adjust the distance between the end of the plug 2a and the first limit clamping plate 4a or the second limit clamping plate 6a according to the thickness of the pressing plate 12a at the end of the air-conditioning pipeline 12 and tighten the fastening nut 3; then press the inclined section 4d or the pressing plate 8 so that the first clamping plate 4 or the second clamping plate 6 moves away from the fixed seat 1, and sleeve the end of the air-conditioning pipeline 12 into the circular sunk platform 2a1; release the inclined section 4d or the pressing plate 8, and under the reset action of the first return spring 5 or the second return spring 9, the pressing plate 12a can be closely attached between the plug 2a and the first limit clamping plate 4a or between the plug 2a and the second limit clamping plate 6a, and at the same time, the first clamping groove 4a1 or the second clamping groove 6a1 is clamped on the air-conditioning pipeline 12. If the plug 2a is connected to the air inlet end of the air-conditioning pipeline 12, the screw 2 is provided with a ventilation hole 2b, otherwise, the screw 2 is a solid screw.

[0046] With such a design, the same screw 2 can be applicable to multiple air-conditioning pipelines 12 with the same cross-sectional size but different thicknesses of the pressing plate 12a, increasing the utilization rate of a single screw 2. At the same time, it also reduces the type of models required for storage of the plug 2a, thereby reducing the space occupied by the storage of the plug 2a, and also greatly accelerating the time required for the selection of the plug 2a in the early stage.

[0047] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. An adjustable tooling for detecting the water tightness of an automotive air conditioning pipeline, characterized in that: It comprises a fixing seat (1), a screw rod (2) is threadedly mounted on the fixing seat (1), a plug (2a) is provided at one end of the screw rod (2), and the plug (2a) is used to seal the end of the pipeline to be tested; The fixing seat (1) is provided with a clamping mechanism (A), and the clamping mechanism (A) has a limit clamping plate that can be arranged opposite to the plug (2a). By operating the clamping mechanism (A), the pressure plate and the end of the pipeline to be tested can be fixedly clamped between the limit clamping plate and the plug (2a); by turning the screw rod (2), the distance between the end plug (2a) and the limit clamping plate can be changed.

2. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 1, characterized in that: The fixing seat (1) is provided with a threaded mounting hole (1a) along the length direction, the screw rod (2) is threadedly mounted in the threaded mounting hole (1a), a locking nut (3) is threadedly mounted on the screw rod (2), and the fixing seat (1) is arranged between the plug (2a) and the locking nut (3).

3. The adjustable tooling for detecting the water tightness of the automotive air-conditioning pipeline according to claim 2, characterized in that: The clamping mechanism (A) comprises a first clamping plate (4) rotatably arranged at the bottom of the fixing seat (1); a first limiting clamping plate (4a) is vertically upwardly arranged at one end of the first clamping plate (4) close to the plug (2a); the plug (2a) is located between the first limiting clamping plate (4a) and the fixing seat (1); a first reset spring (5) is arranged between the fixing seat (1) and the first clamping plate (4); the first reset spring (5) continuously applies a reset force to the first clamping plate (4) so ​​that the first limiting clamping plate (4a) is always facing the plug (2a).

4. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 2, wherein: The clamping mechanism (A) comprises a second clamping plate (6) symmetrically arranged on the upper and lower sides of the fixing seat (1); a second limit clamping plate (6a) is provided at one end of the second clamping plate (6) close to the plug (2a) in the vertical direction; four first through holes (1b) are provided in the vertical direction of the fixing seat (1); the four first through holes (1b) are distributed in a rectangular shape; two movable holes (6b) and two mounting grooves (6c) are provided on one side of the second clamping plate (6) close to the fixing seat (1) corresponding to the four first through holes (1b); the movable holes (6b) and the mounting grooves (6c) are ) are spaced apart from each other, a pressing rod (7) is inserted into the first through hole (1b), one end of the pressing rod (7) is provided with a threaded mounting section (7a), the threaded mounting section (7a) is threadedly assembled in the mounting groove (6c), a pressing plate (8) is mounted on the other end of the pressing rod (7) by means of screws, a second return spring (9) is sleeved on the pressing rod (7) between the pressing plate (8) and the second clamping plate (6), the second return spring (9) continuously applies force to the second clamping plate (6) so that the second clamping plate (6) is always in close contact with the fixing seat (1).

5. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 3, wherein: The first clamping plate (4) is formed with a transfer portion (4b) upwardly in the vertical direction, and a transfer hole (4b1) is provided on the transfer portion (4b); the fixing seat (1) is formed with a second through hole (1c) in the width direction, and a rotating pin (10) is inserted into the second through hole (1c) and the transfer hole (4b1).

6. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 5, wherein: The rotating pin (10) is arranged at one end close to the plug (2a), the first return spring (5) is arranged at one end close to the lock nut (3), the first clamping plate (4) is vertically provided with a limiting boss (4c) upwards, the bottom of the fixed seat (1) is provided with a limiting groove (1d) corresponding to the limiting boss (4c), the first return spring (5) is arranged between the limiting boss (4c) and the limiting groove (1d), the first return spring (5) is a compression spring, pressing the first clamping plate (4) can make the first limiting clamping plate (4a) rotate downwards, and releasing the first return spring (5) can make the first limiting clamping plate (4a) face the plug (2a) directly.

7. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 3, wherein: One end of the first clamping plate (4) close to the lock nut (3) is inclined downwards with an inclined section (4d), the top of the fixed seat (1) is provided with a handle (11), and one end of the handle (11) close to the lock nut (3) is inclined upwards.

8. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 1, wherein: The screw rod (2) is provided with a ventilation hole (2b) along the length direction, and the ventilation hole (2b) penetrates through the plug (2a).

9. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 3, wherein: The top of the first limiting clamping plate (4a) is provided with a first clamping groove (4a1), and the first clamping groove (4a1) is of an arc-shaped structure, which is used for clamping the air-conditioning pipeline to be measured.

10. The adjustable tooling for detecting the water tightness of an automotive air-conditioning pipeline according to claim 4, wherein: The second limiting clamping plate (6a) is provided with a second clamping groove (6a1), the second clamping groove (6a1) is of an arc-shaped structure, and the second clamping grooves (6a1) of the upper and lower second limiting clamping plates (6a) can be combined into a circular structure, and the circular structure is used for clamping the air-conditioning pipeline to be measured.

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