A spherical leak detection fixture for synchronous detection of multiple workpieces

Abstract

The present invention discloses a multi-workpiece synchronous detection type spherical leak detection fixture, comprising a bearing base; the center position of the top surface of the bearing base is fixedly connected to the bottom end of a supporting column; and further comprising: a leak detection mechanism is arranged above the bearing base, and the leak detection mechanism includes a leak detection sphere, and a leak detection cavity is opened inside the leak detection sphere; wherein an adjustment mechanism is arranged at the top of the supporting column. In the multi-workpiece synchronous detection type spherical leak detection fixture, the leak detection sphere is installed for components to be detected of different specifications through an installed matching channel, and the leak detection sphere is driven by the adjustment mechanism to rotate, so that some components to be detected with larger sizes may be inconvenient to install, and at the same time, the sealing mechanism inside the matching channel can be wrapped around the outside of the component to be detected inside the matching channel through deformation expansion, so as to reduce the probability of false detection due to the tolerance gap of the component to be detected.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum leak detection, in particular to a multi-workpiece synchronous detection spherical leak detection fixture. Background Art

[0002] Vacuum leak detection is a kind of equipment detection technology, which mainly focuses on mechanical working parts such as driving cylinders and air pumps. A vacuum is drawn into such equipment through a vacuum instrument to detect whether there is leakage between parts of such equipment under vacuum. However, when connecting equipment of different specifications, existing vacuum leak detectors need to use different pipes and joints for matching connection, and false leakage detection may also occur due to connection errors.

[0003] The invention with publication number CN101358896A discloses a vacuum leak detector, in which a vacuum nozzle housing is provided with an exhaust device, an exhaust device, an air jet device, and an air duct, and the exhaust device is connected to the exhaust device and the air jet device through a tee, and the air duct is connected to the air jet device; the exhaust device is provided with an exhaust cavity at the lower end of the nozzle housing, and the exhaust cavity is connected to the tee. The vacuum nozzle of the device is low in price, light in weight, small in size, and highly flexible in use; at the same time, the device has a simple structure and is not easy to break;

[0004] However, the invention of CN113932986A discloses a vacuum leak detection device, which adjusts the pressure of the leak detection space, manages the tracer gas concentration in the leak detection space, manages the speed at which the workpiece leaks outward under the action of the pressure difference, and increases the partial pressure ratio of the leaked detection gas, thereby greatly improving the detection efficiency and accuracy, and can protect the workpiece that cannot withstand pressure from being damaged by the internal and external pressure difference during the detection process;

[0005] However, the above-mentioned vacuum leak detection equipment still has the following problems during actual use: it is interconnected with the component to be detected through a vacuum extraction mechanism so that detection can be achieved by using a negative pressure vacuum method, but when such leak detection equipment is connected to the component to be detected, it is necessary to replace the pipe joints of the same size and specification, and there is still a tolerance gap during the connection process, thus affecting the leak detection result of the component to be detected. At the same time, such leak detection equipment can only detect a single component at a time, resulting in low leak detection efficiency.

[0006] Therefore, we proposed a multi-workpiece synchronous detection spherical leak detection fixture to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a spherical leak detection fixture for synchronous detection of multiple workpieces, in order to solve the existing problem that the leak detection device is connected to the component to be detected through a vacuum extraction mechanism so as to realize the detection by means of negative pressure vacuum. However, when such leak detection equipment is connected to the component to be detected, it is necessary to replace the pipe joints of the same size and specification, and there is still a tolerance gap during the connection process, thus affecting the leak detection result of the component to be detected. At the same time, such leak detection equipment can only detect a single component at a time, resulting in low leak detection efficiency.

[0008] To achieve the above object, the present invention provides the following technical solution: a multi-workpiece synchronous detection type spherical leak detection fixture, comprising a bearing base, and movable guide wheels rotatably arranged at the four corners of the bottom surface of the bearing base;

[0009] The center position of the top surface of the bearing base is fixedly connected to the bottom end of the supporting column, and servo motors are fixedly installed on both left and right sides of the upper end of the supporting column;

[0010] It also includes: a leak detection mechanism is arranged above the bearing base, and the leak detection mechanism includes a leak detection sphere, and a leak detection cavity is opened inside the leak detection sphere;

[0011] Wherein, an adjustment mechanism is arranged at the top of the supporting column, and the adjustment mechanism includes an adjustment platform, and the adjustment platform is fixedly installed at the top of the supporting column;

[0012] The leak detection mechanism comprises a mounting slot, and the mounting slot is opened outside the leak detection sphere, and a matching channel is fixedly arranged inside the mounting slot, and the matching channel arranged inside the mounting slot and the leak detection cavity opened inside the leak detection sphere are interconnected;

[0013] The outside of the matching channel includes a sealing mechanism, and the sealing mechanism includes a sealing pipe, the sealing pipe is fixedly installed at one end of the matching channel close to the leak detection sphere, and a resistance ring is slidably arranged at the outer end of the matching channel, and the inner end of the resistance ring is fixedly connected to the outer end of the resistance slide rod at an equal angle, and the inner ends of the resistance slide rods arranged at an equal angle extend to the outside of the inner end of the matching channel;

[0014] The sealing mechanism includes a storage airbag, and the storage airbag is fixedly installed at the inner end of the matching channel, and the storage airbag is fitted to the inner end of the interference slide bar, and the interference slide bar and the matching channel are connected to each other through the interference spring, and the matching channel is fixedly provided with a sealing airbag inside;

[0015] The outer side of the sealing airbag included in the sealing mechanism and the inner end of the storage airbag are interconnected through a conveying pipe, and the end of the device to be detected contacts the contact pressure ring and the contact slide rod included in the sealing mechanism, so that the gas inside the storage airbag can be transported to the interior of the sealing airbag through the conveying pipe, so that after the sealing airbag is expanded, it is filled between the matching channel and the device to be detected to enhance the sealing effect.

[0016] Preferably, the adjustment mechanism includes a driving bevel gear, and the driving bevel gear is rotatably arranged on the left and right sides of the top surface of the adjustment platform through bearings, and a transmission shaft is fixedly arranged at the bottom end shaft of the driving bevel gears on the left and right sides, and the bottom ends of the symmetrically arranged transmission shafts are both arranged to penetrate the outside of the bottom surface of the adjustment platform.

[0017] Preferably, the bottom ends of the left and right transmission shafts included in the adjustment mechanism are fixedly connected to the top shaft of the servo motor on the right side of the supporting column, and the adjustment mechanism includes a rotating guide wheel, and the rotating guide wheel is fixedly installed on the left and right sides of the top surface of the adjustment platform in a front-to-back symmetrical manner.

[0018] Preferably, the leak detection mechanism includes a positioning ring body, and the positioning ring body is fixedly installed on the left and right sides of the outside of the leak detection sphere, and guide grooves are opened on the inner sides of the left and right positioning ring bodies, and the left and right positioning ring bodies are rotatably connected with the rotating guide wheels included in the adjustment mechanism through the guide grooves opened on the inner sides.

[0019] Preferably, the leak detection mechanism includes a guide tooth block, and the guide tooth block is fixedly installed at equal angles on the outer sides of the left and right positioning ring bodies, and the left and right positioning ring bodies are meshed and connected to the driving bevel gears included in the adjustment mechanism through the guide tooth blocks arranged on the outer sides, and the rotation of the symmetrically arranged driving bevel gears drives the meshing guide tooth blocks to adjust the angles of the positioning ring bodies and the leak detection spheres.

[0020] Preferably, the leak detection mechanism includes a vacuum bellows, and the vacuum bellows is fixedly arranged on the left and right sides below the leak detection sphere, and the vacuum bellows and the leak detection cavity opened inside the leak detection sphere are interconnected, and the end of the vacuum bellows away from the leak detection sphere is connected to the negative pressure vacuum machine so as to draw vacuum into the leak detection cavity opened inside the leak detection sphere.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the leak detection sphere of the multi-workpiece synchronous detection type leak detection fixture can be installed for parts to be detected of different specifications through the installed matching channel, and the leak detection sphere is driven by the adjustment mechanism to rotate, so that some parts to be detected with larger sizes may be inconvenient to install, and the sealing mechanism inside the matching channel can be expanded by deformation and wrapped around the outside of the parts to be detected inside the matching channel, so as to reduce the probability of false detection caused by the tolerance gap of the parts to be detected. The specific contents are as follows:

[0022] 1. The leak detection sphere is installed above the adjustment platform included in the adjustment mechanism. The adjustment platform is supported by the supporting columns on the bearing base and the movable guide wheels arranged at the four corners of the bottom surface, so that it can be transferred for use under various usage requirements through the movable guide wheels. At the same time, the leak detection sphere is supported and lifted by the bearing base and the supporting columns to prevent the problem of inconvenience in installation of large-sized components to be detected;

[0023] Furthermore, the driving bevel gear is driven to rotate in the opposite direction through the transmission shaft of the adjustment mechanism, so as to drive the meshing guide gear block, the positioning ring body and the leakage detection ball to rotate, and at the same time, a rotating guide wheel is slidably provided inside the positioning ring body, so as to improve the stability of the positioning ring body and the leakage detection ball during the rotation process through the rotating guide wheels symmetrically distributed front and back;

[0024] 2. The part to be detected is pressed against the pressing ring on the outside of the matching channel, so that the storage airbag is squeezed through the sliding rod, and the air inside the storage airbag enters the inside of the sealing airbag through the delivery pipe, so that the sealing airbag is deformed and expanded to wrap around the outside of the part to be detected in the matching channel, so as to reduce the probability of false detection caused by the tolerance gap of the part to be detected;

[0025] The leak detection sphere is used to install matching channels of different specifications through the mounting slots opened on the outside. Matching channels of different specifications are used to connect various types of components to be detected. At the same time, the matching channels in an idle state are sealed by a cover plate connected by bolts at the outer end to prevent false leakage detection, etc.

[0026] The vacuum bellows connected through the bottom of the leak detection sphere is connected to the vacuum exhaust pump so that the air in the leak detection cavity opened inside the leak detection sphere can be extracted through the vacuum bellows, and the matching channel connected through the leak detection cavity connects the components to be detected so that the components to be detected can achieve multi-station synchronous leak detection through continuous negative pressure exhaust inside the leak detection cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation structure of the leak detection sphere of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation structure of the vacuum bellows of the present invention;

[0030] Figure 4 This is a schematic diagram of the side cross-section structure of the leak detection sphere of the present invention;

[0031] Figure 5 This is a schematic diagram of the matching channel installation structure of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the installation of the positioning ring body and the leak detection sphere of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the driving helical gear meshing with the positioning ring body of the present invention;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the matching channel of the present invention;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the interference pressure ring of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure after the resistance pressure ring of the present invention moves;

[0037] Fig.11 For the present invention Fig.10 The enlarged structural diagram at A in the middle;

[0038] Fig.12 It is a schematic diagram of the sealing airbag installation structure of the present invention.

[0039] In the figure: 1. load-bearing base; 2. moving guide wheel; 3. supporting column; 4. servo motor; 5. leak detection sphere; 6. leak detection cavity; 7. adjustment platform; 8. driving bevel gear; 9. transmission shaft; 10. rotating guide wheel; 11. positioning ring body; 12. guide slide groove; 13. guide gear block; 14. mounting slot; 15. matching channel; 16. vacuum bellows; 17. sealing pipe; 18. resistance pressure ring; 19. resistance slide rod; 20. storage airbag; 21. resistance spring; 22. sealing airbag; 23. conveying pipe. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 12 , the present invention provides the following technical solutions:

[0042] Embodiment 1: In order to solve the problems existing in the actual use of the existing leak detection equipment, this embodiment adopts the following technical scheme: a multi-workpiece synchronous detection type spherical leak detection fixture, comprising a bearing base 1, and movable guide wheels 2 rotatably arranged at the four corners of the bottom surface of the bearing base 1; the center position of the top surface of the bearing base 1 is fixedly connected to the bottom end of the supporting column 3, and the upper end of the supporting column 3 is fixedly installed with a servo motor 4 on both sides; Figure 1 As shown, the middle part of the bottom surface of the leak detection sphere 5 is fixedly installed on the top of the supporting column 3, and the supporting base 1 at the bottom of the supporting column 3 and the movable guide wheels 2 at the four corners improve the convenience when it is needed to be moved according to the use requirements, and the leak detection sphere 5 is lifted by the supporting column 3 to prevent the problem of inconvenience in installation of larger parts to be detected.

[0043] Embodiment 2: In this embodiment, another installation method for the leak detection sphere 5 is disclosed. Different from that in Embodiment 1, the use angle of the leak detection sphere 5 can be adjusted to improve the convenience of using components to be detected of different specifications; wherein, an adjustment mechanism is provided at the top of the supporting column 3, and the adjustment mechanism includes an adjustment platform 7, and the adjustment platform 7 is fixedly installed on the top of the supporting column 3, the adjustment mechanism includes a driving bevel gear 8, and the driving bevel gear 8 is rotatably arranged on the left and right sides of the top surface of the adjusting platform 7 through a bearing, and transmission shafts 9 are fixedly arranged at the bottom end shafts of the driving bevel gears 8 on both sides, and the bottom ends of the symmetrically arranged transmission shafts 9 are both penetrated and arranged on the outside of the bottom surface of the adjusting platform 7; the bottom ends of the left and right side transmission shafts 9 included in the adjustment mechanism are fixedly connected to the top shaft of the servo motor 4 on the right side of the supporting column 3, and the adjustment mechanism includes a rotating guide wheel 10, and the rotating guide wheel 10 is fixedly installed on the left and right sides of the top surface of the adjusting platform 7 in a front-to-back symmetrical manner.

[0044] A leak detection mechanism is arranged above the supporting base 1, and the leak detection mechanism includes a leak detection sphere 5, and a leak detection cavity 6 is opened inside the leak detection sphere 5, the leak detection mechanism includes a positioning ring body 11, and the positioning ring body 11 is fixedly installed on the left and right sides of the outside of the leak detection sphere 5, and the inner sides of the positioning ring bodies 11 on the left and right sides are provided with guide grooves 12, and the positioning ring bodies 11 on the left and right sides are rotatably connected with the rotating guide wheels 10 included in the adjustment mechanism through the guide grooves 12 opened on the inner sides; the leak detection mechanism includes a guide tooth block 13, and the guide tooth block 13 is fixedly installed on the outer sides of the positioning ring bodies 11 on the left and right sides at equal angles, and the positioning ring bodies 11 on the left and right sides are meshedly connected to the driving bevel gear 8 included in the adjustment mechanism through the guide tooth block 13 arranged on the outer side, and the rotation of the symmetrically arranged driving bevel gear 8 drives the meshingly connected guide tooth block 13 to adjust the angle with the positioning ring body 11 and the leak detection sphere 5.

[0045] like Figure 4-Figure 7 As shown, when the working angle of the leak detection is performed according to the required detection equipment, the servo motor 4 installed on the outer side of the upper end of the supporting column 3 works to drive the transmission shaft 9 fixedly connected through its top end to rotate in the opposite direction below the adjustment platform 7, and at the same time, the transmission shaft 9 drives the fixedly connected driving bevel gear 8 to engage with the guide tooth block 13 on the outer side of the positioning ring body 11, so that the positioning ring body 11 symmetrically distributed on the left and right sides drives the fixedly connected leakage detection ball 5 to rotate, and at the same time, a rotating guide wheel 10 is embedded and installed in the guide groove 12 provided on the inner side of the positioning ring body 11, so as to improve the stability of the positioning ring body 11 and the leakage detection ball 5 during rotation through the rotating guide wheel 10 symmetrically distributed front and back.

[0046] Embodiment 3: In order to solve the problems existing in the actual use of the existing leak detection equipment, the present embodiment adopts the following technical scheme: the leak detection mechanism includes a mounting slot 14, and the mounting slot 14 is opened on the outside of the leak detection sphere 5, and a matching channel 15 is fixedly arranged inside the mounting slot 14, and the matching channel 15 arranged inside the mounting slot 14 and the leak detection cavity 6 opened inside the leak detection sphere 5 are interconnected; the outside of the matching channel 15 includes a sealing mechanism, and the sealing mechanism includes a sealing pipe 17, the sealing pipe 17 is fixedly installed at one end of the matching channel 15 close to the leak detection sphere 5, and a resistance ring 18 is slidably arranged on the outer end of the matching channel 15, and the inner end of the resistance ring 18 is fixedly connected to the outer end of the resistance slide rod 19 at an equal angle, and the inner ends of the resistance slide rods 19 arranged at equal angles extend to the outside of the inner end of the matching channel 15.

[0047] The sealing mechanism includes a storage airbag 20, and the storage airbag 20 is fixedly installed at the inner end of the matching channel 15, and the storage airbag 20 is fitted to the inner end of the resistance slide bar 19, and the resistance slide bar 19 and the matching channel 15 are connected to each other at equal angles through a resistance spring 21, and a sealing airbag 22 is fixedly arranged inside the matching channel 15; the outer side of the sealing airbag 22 included in the sealing mechanism and the inner end of the storage airbag 20 are interconnected through a conveying pipe 23, and the resistance pressure ring 18 and the resistance slide bar 19 included in the sealing mechanism are resisted through the end of the equipment to be detected, so as to transport the gas inside the storage airbag 20 to the inside of the sealing airbag 22 through the conveying pipe 23, so that the sealing airbag 22 is filled between the matching channel 15 and the equipment to be detected after expansion to improve the sealing effect.

[0048] The leak detection mechanism includes a vacuum bellows 16, and the vacuum bellows 16 is fixedly arranged on the left and right sides below the leak detection sphere 5, and the vacuum bellows 16 and the leak detection cavity 6 opened inside the leak detection sphere 5 are interconnected, and the end of the vacuum bellows 16 away from the leak detection sphere 5 is connected to the negative pressure vacuum machine so as to draw vacuum into the leak detection cavity 6 opened inside the leak detection sphere 5.

[0049] like Figure 5 , Figure 10-11 As shown, the leak detection sphere 5 installs matching channels 15 of different specifications through the mounting slots 14 opened on the outside thereof. The matching channels 15 of different specifications are used to connect various types of components to be detected. At the same time, the matching channels 15 in an idle state are sealed by a cover plate connected by bolts at the outer end to prevent false leakage detection and the like.

[0050] Furthermore, when the component to be detected needs to be installed, the outer ends of the component to be detected and the matching channel 15 are abutted against each other, so as to drive the abutment pressure ring 18 arranged at the outer end of the matching channel 15 to slide inward, and the abutment pressure ring 18 drives the abutment slide rod 19 distributed at equal angles at the inner end to slide toward the inside of the sealing pipe 17, and at the same time, the inner end of the abutment slide rod 19 squeezes the storage airbag 20 arranged at the inner end of the matching channel 15, so that the gas inside the storage airbag 20 is transported to the inside of the sealing airbag 22 through the through-connected delivery pipe 23, and the outer wall of the component to be detected inserted into the matching channel 15 is wrapped by the sealing airbag 22, and the expanded and deformed sealing airbag 22 is filled between the component to be detected and the matching channel 15, so as to reduce the probability of false detection due to the tolerance gap of the component to be detected.

[0051] At the same time, the vacuum bellows 16 connected through the bottom of the leak detection sphere 5 is connected to the vacuum pump so that the air in the leak detection cavity 6 opened inside the leak detection sphere 5 can be extracted through the vacuum bellows 16, and the matching channel 15 connected through the leak detection cavity 6 connects the components to be detected so that the components to be detected can realize multi-station synchronous leak detection through continuous negative pressure extraction inside the leak detection cavity 6.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spherical leak detection fixture for synchronous detection of multiple workpieces, comprising a bearing base (1), and movable guide wheels (2) rotatably arranged at four corners of the bottom surface of the bearing base (1); The center position of the top surface of the bearing base (1) is fixedly connected to the bottom end of the supporting column (3), and servo motors (4) are fixedly mounted on both left and right sides of the upper end of the supporting column (3); It is characterized in that Also includes: A leak detection mechanism is arranged above the bearing base (1), and the leak detection mechanism comprises a leak detection sphere (5), and a leak detection cavity (6) is provided inside the leak detection sphere (5); Wherein, an adjustment mechanism is provided at the top of the supporting column (3), and the adjustment mechanism includes an adjustment platform (7), and the adjustment platform (7) is fixedly mounted on the top of the supporting column (3); The leak detection mechanism comprises a mounting slot (14), and the mounting slot (14) is provided outside the leak detection sphere (5), and a matching channel (15) is fixedly provided inside the mounting slot (14), and the matching channel (15) provided inside the mounting slot (14) and a leak detection cavity (6) provided inside the leak detection sphere (5) are interconnected; The matching channel (15) includes a sealing mechanism on the outside, and the sealing mechanism includes a sealing pipe (17), the sealing pipe (17) is fixedly installed at one end of the matching channel (15) close to the leak detection sphere (5), and a resistance ring (18) is slidably arranged on the outer end of the matching channel (15), and the inner end of the resistance ring (18) is fixedly connected to the outer end of the resistance slide rod (19) at an equal angle, and the inner ends of the resistance slide rods (19) arranged at an equal angle extend to the outside of the inner end of the matching channel (15); The sealing mechanism comprises a storage airbag (20), and the storage airbag (20) is fixedly mounted on the inner end of the matching channel (15), and the storage airbag (20) is arranged in close contact with the inner end of the abutting slide bar (19), and the abutting slide bar (19) and the matching channel (15) are connected to each other at equal angles through a abutting spring (21), and a sealing airbag (22) is fixedly arranged inside the matching channel (15); The outer side of the sealing airbag (22) included in the sealing mechanism and the inner end of the storage airbag (20) are interconnected through a delivery pipe (23), and the end of the device to be detected contacts the contact pressure ring (18) and the contact slide rod (19) included in the sealing mechanism, so that the gas inside the storage airbag (20) is transported to the inside of the sealing airbag (22) through the delivery pipe (23), so that the sealing airbag (22) is expanded and filled between the matching channel (15) and the device to be detected to improve the sealing effect.

2. The multi-workpiece synchronous detection spherical leak detection fixture according to claim 1, characterized in that: The adjustment mechanism comprises a driving bevel gear (8), and the driving bevel gear (8) is rotatably arranged on the left and right sides of the top surface of the adjustment platform (7) through a bearing, and a transmission rotating shaft (9) is fixedly arranged at the bottom end rotating shafts of the driving bevel gears (8) on the left and right sides, and the bottom ends of the symmetrically arranged transmission rotating shafts (9) are both arranged to penetrate the outside of the bottom surface of the adjustment platform (7).

3. The multi-workpiece synchronous detection spherical leak detection fixture according to claim 2, characterized in that: The bottom ends of the left and right transmission shafts (9) included in the adjustment mechanism are fixedly connected to the top shaft of the servo motor (4) on the right side of the support column (3), and the adjustment mechanism includes a rotating guide wheel (10), and the rotating guide wheel (10) is fixedly installed on the left and right sides of the top surface of the adjustment platform (7) in a front-to-back symmetrical manner.

4. The multi-workpiece synchronous detection spherical leak detection fixture according to claim 3, characterized in that: The leak detection mechanism comprises a positioning ring body (11), and the positioning ring body (11) is fixedly mounted on the left and right sides of the outside of the leak detection sphere (5), and the inner sides of the positioning ring bodies (11) on the left and right sides are provided with guide grooves (12), and the positioning ring bodies (11) on the left and right sides are rotatably connected to the rotating guide wheels (10) included in the adjustment mechanism through the guide grooves (12) provided on the inner sides.

5. The multi-workpiece synchronous detection spherical leak detection fixture according to claim 4, characterized in that: The leak detection mechanism comprises a guide tooth block (13), and the guide tooth block (13) is fixedly installed at equal angles on the outside of the left and right positioning ring bodies (11), and the left and right positioning ring bodies (11) are meshedly connected to the driving bevel gear (8) included in the adjustment mechanism through the guide tooth block (13) arranged on the outside, and the rotation of the symmetrically arranged driving bevel gear (8) drives the meshed guide tooth block (13) and the positioning ring body (11) and the leak detection ball (5) to adjust the angle.

6. The multi-workpiece synchronous detection spherical leak detection fixture according to claim 1, characterized in that: The leak detection mechanism comprises a vacuum bellows (16), and the vacuum bellows (16) is fixedly arranged on the left and right sides below the leak detection sphere (5), and the vacuum bellows (16) and the leak detection cavity (6) opened inside the leak detection sphere (5) are interconnected, and one end of the vacuum bellows (16) away from the leak detection sphere (5) is interconnected with a negative pressure vacuum machine so as to draw a vacuum into the leak detection cavity (6) opened inside the leak detection sphere (5).

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