An automatic air tightness detection device for a diaphragm gas meter

Abstract

The present application relates to the technical field of gas meter air tightness detection equipment, and in particular to an automatic air tightness detection device for a diaphragm gas meter, comprising a chassis, a first transport device and a second transport device for transporting a gas meter are connected to the chassis, a buffer component for slowing down is installed on the first transport device, the buffer component comprises a first fixed plate, a buffer plate for buffering the gas meter is connected to the first fixed plate, a resisting component for preventing the gas meters from pressing against each other is connected to the buffer plate, the resisting component comprises a folding bottom plate, a folding groove is provided on the folding bottom plate, a first slider is slidably connected to the folding bottom plate, a resisting plate is hinged on the first slider, a driving component controlled to move by the buffer plate is connected to the resisting plate, an opening and closing control component controlled to open and close by the buffer plate is connected to the resisting plate, and a positioning device and a detection device are installed in the chassis. The present application has the effect of improving the convenience of the automatic air tightness detection device for a diaphragm gas meter during operation.

Description

Technical Field

[0001] The present application relates to the technical field of gas meter air tightness detection equipment, and in particular to an automatic air tightness detection device for a diaphragm gas meter. Background Art

[0002] As an important instrument for measuring gas flow, the air tightness of the diaphragm gas meter is directly related to its safety of use and measurement accuracy. Therefore, the air tightness of the gas meter needs to be tested after the gas meter is produced.

[0003] Most of the gas meters are tested for air tightness by batch testing. The gas meters are transported to the testing location in batches, and the air tightness of the gas meters is determined by whether the air pressure inside the gas meters is balanced by passing gas through the gas inlet and outlet. In the process of transporting gas meters in batches, the gas meters need to be clamped to the testing location. When clamping the gas meters, the frontmost gas meter on the transport device needs to be stopped. However, when the previous gas meter stops for transportation, the gas meters behind are still being transported forward. When the previous gas meter is transported, it is easy to squeeze with the gas meter behind, which is not convenient for gas meter transportation and is also easy to cause wear between the two gas meters. Summary of the invention

[0004] In order to improve the convenience of an automatic air tightness detection device for a diaphragm gas meter during use, the present application provides an automatic air tightness detection device for a diaphragm gas meter.

[0005] The present application provides an automatic air tightness detection device for a diaphragm gas meter, which adopts the following technical solution:

[0006] An automatic air tightness detection device for a diaphragm gas meter comprises a chassis, to which a first transport device for transporting the gas meter into the chassis and a second transport device for sending the gas meter out of the chassis are connected, a buffer component for slowly stopping the gas meter is installed on the first transport device, the buffer component comprises a first fixing plate, the first fixing plate is connected to the first transport device, a buffer plate for buffering the gas meter is connected to the first fixing plate, a resisting component for preventing the gas meters from pressing against each other is connected to the buffer plate, a positioning device for fixing the gas meter is installed in the chassis, and a detection device for air tightness detection of the gas meter is installed in the chassis.

[0007] By adopting the above technical scheme, the first transportation device transports the gas meter into the chassis. When transporting the gas meter, the buffer plate is used to buffer the gas meter and make the gas meter stop, which is convenient for transferring the gas meter. The positioning device is used to position and fix the gas meter to prevent the gas meter from moving during the detection process. The gas tightness of the gas meter is quickly detected by the detection device. After the detection is completed, the gas meter is sent out by the second transportation device, which is convenient for quickly detecting the air tightness of the gas meter, which is beneficial to improving the convenience of the automatic air tightness detection device of the gas meter during use.

[0008] In a specific possible implementation scheme, the resistance component includes a folding base plate, the folding base plate is connected to the first transport device, the folding base plate is provided with a folding groove, the folding base plate is slidably connected to a first slider via the folding groove, a resistance plate is hinged on the first slider, a driving component whose movement is controlled by the buffer plate is connected to the resistance plate, and an opening and closing control component whose folding is controlled by the buffer plate is connected to the resistance plate.

[0009] By adopting the above technical solution, when the gas meter stops, the buffer plate controls the driving component and the opening and closing control component to control the opening and closing of the baffle plate, so that the baffle plate can be quickly opened to block the gas meter behind, preventing the two gas meters from sticking to each other during transportation, affecting the transfer of the gas meter and causing wear.

[0010] In a specific feasible implementation scheme, the driving assembly includes a push plate, the push plate is connected to the buffer plate, the push plate is connected to the first push rod, the first transport device is installed on the mounting plate, the mounting plate is provided with a first slide groove, the mounting plate is slidably installed with a second slider through the first slide groove, the first push rod is connected to the second slider, the second slider is installed with a slide rail, a turntable is rotatably installed on the mounting plate, and the turntable is provided with a first protrusion and a second protrusion, and the first protrusion is slidably connected to the slide rail; the mounting plate is provided with a second slide groove, the mounting plate is slidably installed with a third slider through the second slide groove, the third slider is hingedly provided with a second push rod, the second push rod is hinged with the second protrusion, the third slider is connected with a first connecting rod, and the folding bottom plate is provided with a first connecting groove, and the first connecting rod passes through the first connecting groove and is connected to the first slider.

[0011] By adopting the above technical solution, when the gas meter pushes the buffer plate, the buffer plate drives the push plate to move, the push plate drives the first push rod to control the movement of the second slider, the second slider controls the rotation of the turntable, and the rotation of the turntable causes the second push rod to push the third slider to move, thereby facilitating the first connecting rod to push the first slider to slide on the folding bottom plate, thereby facilitating the rapid opening of the baffle plate.

[0012] In a specific feasible implementation scheme, the opening and closing control component includes a push piece, the push piece is mounted on the third sliding block, the mounting plate is mounted on the support plate, a third push rod is slidably mounted on the support plate, a second fixed plate is mounted on the third push rod, a third spring is sleeved on the third push rod, one end of the third spring is connected to the second fixed plate, and the other end is connected to the support plate, a chamfer is provided on the push piece, the third push rod is against the chamfer of the push piece through the third spring, a second connecting rod is connected to the third push rod, and the folding bottom plate A fourth slide groove is provided on the top, and the groove depth of the fourth slide groove is greater than the groove depth of the folding groove. A fourth push rod is slidably installed on the folding base plate through the fourth slide groove. A fifth push rod is hinged on the fourth push rod, and the fifth push rod is hinged to the second connecting rod. A sixth push rod is hinged on the folding base plate, and the hinge point of the sixth push rod is set in the fourth slide groove. A seventh push rod is hinged on the sixth push rod, and the seventh push rod is hinged to the fourth push rod. A fifth slide groove is provided on the stop plate, and the sixth push rod is slidably connected to the stop plate through the fifth slide groove.

[0013] By adopting the above technical solution, when the third slider moves, it drives the push plate to move, and the third push rod is pushed to move through the action of the oblique cut surface of the push plate, and the third push rod drives the second connecting rod to move, and the second connecting rod pushes the fourth push rod to slide in the fourth slide groove, so that the seventh push rod props up the sixth push rod, which is convenient for the sixth push rod to quickly push the resistance plate out of the folding bottom plate. When the sixth push rod props up the resistance plate, the first connecting rod drives the resistance plate to slide, which is convenient for the resistance plate to quickly open to the extent of resisting the gas meter behind, which is conducive to quickly and effectively resisting the gas meter behind.

[0014] In a specific feasible implementation scheme, a guide slide bar is slidably mounted on the first fixed plate, one end of the guide slide bar is connected to the buffer plate, a first limit block is mounted on the end of the guide slide bar away from the buffer plate, a first spring is sleeved on the guide slide bar, one end of the first spring is connected to the buffer plate, and the other end is connected to the first fixed plate.

[0015] By adopting the above technical solution, when the gas meter contacts the buffer plate, the buffer plate squeezes the first spring, and the first spring buffers the gas meter, so that the gas meter can stop quickly.

[0016] In a specific implementation scheme, the first transport device includes a first mounting frame, the first mounting frame is connected to the chassis, a first transport frame is mounted on the first mounting frame, a first conveyor belt is mounted on the first transport frame, and a first motor for controlling the operation of the first conveyor belt is mounted on the first transport frame.

[0017] By adopting the above technical solution, the gas meter is placed on the first conveyor belt, and the operation of the first conveyor belt is controlled by the first motor to facilitate fast and smooth transportation of the gas meter.

[0018] In a specific possible implementation manner, a guide plate is installed on one end of the first transport frame close to the buffer plate, and a side of the guide plate away from the buffer plate is configured to be arc-shaped.

[0019] By adopting the above technical solution, the guide plate narrows the width of the items transported on the first transport rack, thereby limiting the movement range of the gas meter. The curved surface of the guide plate enables the gas meter to move directly toward the buffer plate, thereby facilitating the subsequent transfer of the gas meter.

[0020] In a specific possible implementation scheme, the second transport device includes a second mounting frame, the second mounting frame is connected to the chassis, a second transport frame is mounted on the second mounting frame, a second conveyor belt is mounted on the second transport frame, a second motor for controlling the operation of the second conveyor belt is connected to the second transport frame, and a partition plate is mounted on the second transport frame, and the partition plate separates the second conveyor belt into two sides.

[0021] By adopting the above technical solution, the gas meter after inspection is placed on the second conveyor belt, and the second motor controls the operation of the second conveyor belt to quickly send the gas meter out of the chassis, and the second conveyor belt is divided into two sides by a partition plate, so that qualified and unqualified gas meters are separated, which is convenient for staff to distinguish and thus facilitate staff to repair unqualified gas meters.

[0022] In a specific feasible implementation scheme, the positioning device includes a first cylinder, which is mounted on the chassis, the output shaft of the first cylinder is connected to a lifting plate, a third mounting frame is mounted on the chassis, a parallel clamp cylinder is mounted on the third mounting frame, and a clamp for clamping the gas meter is mounted on the movable clamp of the parallel clamp cylinder, and the clamp is arranged above the lifting plate.

[0023] By adopting the above technical solution, the gas meter is placed on the lifting plate, and the lifting of the lifting plate is controlled by the first cylinder to facilitate the gas meter to quickly reach the detection position. The gas meter is clamped by the parallel clamp cylinder to prevent the gas meter from moving during the detection process, thereby improving the safety during the detection.

[0024] In a specific feasible implementation scheme, the detection device includes a mounting platform, which is mounted on the third mounting frame, and the mounting platform is arranged above the clamping plate. Two ventilation pipes are installed on the mounting platform, and the ventilation pipes are connected to a gas source. The distance between the two ventilation pipes is the same as the distance between the air inlet and the air outlet of the gas meter. An expansion plug for sealing is installed at the air outlet end of the ventilation pipe. An air pressure detection tube is installed on the mounting platform, and the air pressure detection tube is connected to the two ventilation pipes in the mounting platform.

[0025] By adopting the above technical scheme, when the gas meter is placed on the lifting plate, the first cylinder controls the lifting plate to lift the gas meter, so that the air inlet and outlet of the gas meter are inserted into the ventilation pipe, and the expansion plug is used to seal to prevent air leakage, and the gas meter is clamped and fixed by the clamp. After the fixation is completed, the ventilation pipe ventilates the interior of the gas meter from the air inlet and outlet of the gas meter. After the gas is introduced, the air pressure tester detects the air pressure inside the gas meter. According to whether the air pressure inside the gas meter is stable, it is convenient to quickly determine whether the air tightness of the gas meter is qualified.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The first transport device transports the gas meter into the chassis. When transporting the gas meter, the buffer plate is used to buffer the gas meter and make it stop, which is convenient for transferring the gas meter. When the gas meter stops, the buffer plate controls the driving component and the opening and closing control component to control the opening and closing of the baffle plate, which is convenient for quickly opening the baffle plate to block the gas meter behind. The two gas meters are placed close to each other during transportation, which affects the transfer of the gas meter and causes wear; the gas meter is positioned and fixed by the positioning device to prevent the gas meter from moving during the detection process, and the gas tightness of the gas meter is quickly detected by the detection device. After the detection is completed, the gas meter is sent out by the second transport device, which is convenient for quickly detecting the air tightness of the gas meter, which is beneficial to improving the convenience of the automatic air tightness detection device of the gas meter during use.

[0028] 2. Through the setting of the opening and closing control component, when the gas meter pushes the buffer plate, the buffer plate drives the push plate to move, and the push plate drives the first push rod to control the second slider to move, and the second slider controls the turntable to rotate. The rotation of the turntable causes the second push rod to push the third slider to move, thereby facilitating the first connecting rod to push the first slider to slide on the folding bottom plate, facilitating the rapid opening of the baffle plate. When the third slider moves, it drives the push piece to move, and the action of the oblique cut surface of the push piece drives the third push rod to move, and the third push rod drives the second connecting rod to move, and the second connecting rod drives the fourth push rod to slide in the fourth slide groove, so that the seventh push rod props up the sixth push rod, facilitating the sixth push rod to quickly push the baffle plate out of the folding bottom plate. When the sixth push rod props up the baffle plate, the first connecting rod drives the baffle plate to slide, so that the baffle plate can be quickly opened to the extent of resisting the gas meter behind, which is conducive to quickly and effectively resisting the gas meter behind. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an automatic air tightness detection device for a diaphragm gas meter according to an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the first transportation device of an embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of a buffer component according to an embodiment of the present application.

[0032] Figure 4 It is a schematic diagram of a resistance component according to an embodiment of the present application.

[0033] Figure 5 It is a schematic diagram of a drive component of an embodiment of the present application.

[0034] Figure 6 It is a schematic diagram of the installation position relationship of the opening and closing control component on the first transport frame according to an embodiment of the present application.

[0035] Figure 7 It is a schematic diagram of the connection relationship between the driving component and the opening and closing control component of the embodiment of the present application.

[0036] Figure 8 It is a schematic diagram of the second transportation device of an embodiment of the present application.

[0037] Fig. 9 It is a schematic diagram of a positioning device and a detection device according to an embodiment of the present application.

[0038] Figure numerals: 1, chassis; 11, feed port; 12, discharge port; 2, first transport device; 21, first mounting frame; 22, first transport frame; 221, fourth slide; 23, first conveyor belt; 24, first motor; 25, buffer assembly; 251, first fixing plate; 252, guide slide bar; 253, buffer plate; 254, first stop block; 255, first spring; 256, guide plate; 26, stop assembly Components; 261, folding bottom plate; 2611, folding groove; 2612, first connecting groove; 262, first slider; 263, blocking plate; 2631, fifth slide groove; 27, driving assembly; 271, push plate; 272, second cylinder; 273, pull plate; 274, mounting plate; 2741, first slide groove; 2742, second slide groove; 275, second slider; 2751, first push rod; 2752, slide rail; 2 76, turntable; 2761, first protrusion; 2762, second protrusion; 2763, second push rod; 277, third slider; 2771, first connecting rod; 28, opening and closing control assembly; 282, push piece; 285, support plate; 2861, third push rod; 2862, second fixing plate; 2863, third spring; 287, second connecting rod; 2881, fourth push rod; 2882, fifth push rod; 288 3. Sixth push rod; 2884. Seventh push rod; 3. Second transport device; 31. Second mounting frame; 32. Second transport frame; 33. Second conveyor belt; 34. Second motor; 35. Partition plate; 4. Positioning device; 41. First cylinder; 42. Lifting plate; 43. Third mounting frame; 44. Parallel clamp cylinder; 45. Clamp; 5. Detection device; 51. Mounting table; 52. Ventilation pipe; 53. Air pressure detection tube. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1 -Attached Fig. 9 This application is described in further detail.

[0040] The present application discloses an automatic air tightness detection device for a diaphragm gas meter, referring to Figure 1 , including a chassis 1, on which a feed port 11 and a discharge port 12 are provided, a first transport device 2 for transporting the gas meter into the chassis 1 is installed on the chassis 1, and the first transport device 2 is arranged at the position of the feed port 11, a second transport device 3 for transporting the gas meter out of the chassis 1 is installed on the chassis 1, and the second transport device 3 is arranged at the position of the discharge port 12, a positioning device 4 for fixing the gas meter is installed in the chassis 1, and a detection device 5 for detecting the air tightness of the gas meter is installed in the chassis 1.

[0041] The gas meter is transported from the feed port 11 to the chassis 1 by the first transport device 2, and is positioned and fixed by the positioning device 4 to prevent the gas meter from moving during the detection process, and the air tightness of the gas meter is quickly detected by the detection device 5. After the detection is completed, the gas meter is sent out from the discharge port 12 by the second transport device 3, which is convenient for quickly detecting the air tightness of the gas meter, and is beneficial to improving the convenience of the gas meter automatic air tightness detection device during use.

[0042] Reference Figure 1 and Figure 2 The first transport device 2 includes a first mounting frame 21, which is fixedly mounted on the chassis 1, and a first transport frame 22 is fixedly mounted on the first mounting frame 21. The first transport frame 22 is mounted in the chassis 1 through the feed port 11 at one end close to the chassis 1, and a first conveyor belt 23 is mounted on the first transport frame 22, and a first motor 24 for controlling the rotation of the first conveyor belt 23 is mounted on the first transport frame 22. A buffer component 25 for slowing down the gas meter is arranged at one end of the first transport frame 22 extending into the chassis 1.

[0043] Reference Figure 2 and Figure 3 The buffer assembly 25 includes a first fixed plate 251, which is fixedly mounted on the first transport frame 22. A guide slide bar 252 is slidably mounted on the first fixed plate 251, and the guide slide bar 252 is arranged through the first fixed plate 251. A buffer plate 253 is fixedly mounted on the end of the guide slide bar 252 close to the first conveyor belt 23, and a first limit block 254 is fixedly mounted on the end of the guide slide bar 252 away from the buffer plate 253. A first spring 255 is sleeved on the guide slide bar 252, and one end of the first spring 255 is fixedly connected to the buffer plate 253, and the other end is fixedly connected to the first fixed plate 251. A guide plate 256 is fixedly mounted on the first transport frame 22 near the buffer plate 253, and the side of the guide plate 256 away from the buffer plate 253 is set as an arc surface.

[0044] The gas meter is placed on the first conveyor belt 23. The first motor 24 controls the operation of the first conveyor belt 23 to transport the gas meter, and the first transport frame 22 escorts the gas meter to prevent the gas meter from falling off the first conveyor belt 23 during transportation. When the gas meter approaches the buffer plate 253, the gas meter first passes through the guide plate 256. The guide plate 256 narrows the width of the items transported on the first transport frame 22, thereby limiting the range of movement of the gas meter. The gas meter moves directly toward the buffer plate 253 through the action of the arc surface of the guide plate 256. When the gas meter contacts the buffer plate 253, it pushes the buffer plate 253 and the guide slide bar 252 to slide on the first fixed plate 251. The buffer plate 253 squeezes the first spring 255 so that the first spring 255 generates elastic force to buffer the buffer plate 253, thereby preventing the gas meter from colliding with the buffer plate 253 during transportation and causing damage to the gas meter. At the same time, it is also convenient for the gas meter to dock at the buffer plate 253 position, which is convenient for the subsequent transportation of the gas meter to the detection position.

[0045] Reference Figure 3 and Figure 4 A resisting assembly 26 for preventing the two gas meters from being close to each other is installed on the first mounting frame 21. The resisting assembly 26 includes a folding base plate 261, which is fixedly mounted on the first transport frame 22. A folding groove 2611 is provided on the folding base plate 261. A first slider 262 is slidably mounted on the folding base plate 261. The first slider 262 is arranged in the folding groove 2611. A resisting plate 263 is hinged on the first slider 262. A driving assembly 27 for controlling the movement of the resisting plate 263 through a buffer plate 253 and an opening and closing control assembly 28 for controlling the opening and closing of the resisting plate 263 in the folding groove 2611 are installed on the first mounting frame 21.

[0046] Reference Figure 4 , Figure 5 and Figure 7 The driving assembly 27 includes a push plate 271, which is fixedly connected to the first limit block 254. The bottom end of the push plate 271 extends to the bottom of the first transport frame 22. A second cylinder 272 is fixedly installed at the bottom of the first transport frame 22. The output shaft of the second cylinder 272 passes through the push plate 271 and is slidably connected to the push plate 271. The output shaft of the second cylinder 272 is fixedly connected to a pull plate 273. A mounting plate 274 is fixedly installed at the bottom of the first transport frame 22. A first slide groove 2741 is opened on the mounting plate 274. A second slider 275 is slidably installed on the mounting plate 274 through the first slide groove 2741. A first push rod 2751 is fixedly installed on the second slider 275. The end of the first push rod 2751 away from the second slider 275 is fixedly connected to the push plate 271.

[0047] A slide rail 2752 is fixedly installed on the second slider 275, a turntable 276 is rotatably installed on the mounting plate 274, a first protrusion 2761 and a second protrusion 2762 are fixedly installed on the turntable 276, the first protrusion 2761 and the second protrusion 2762 are eccentrically arranged on the turntable 276 with respect to the rotation center of the turntable 276, the first protrusion 2761 is slidably connected to the slide rail 2752, and a second push rod 2763 is hinged on the second protrusion 2762. A second sliding groove 2742 is provided on the mounting plate 274, and a third slider 277 is slidably installed on the mounting plate 274 through the second sliding groove 2742. The end of the third slider 277 close to the second push rod 2763 is hinged to the second push rod 2763, and the end of the third slider 277 away from the second push rod 2763 is fixedly connected to the first connecting rod 2771. A first connecting groove 2612 is provided on the folding base plate 261, and the first connecting groove 2612 runs through the first transport frame 22. The first connecting groove 2612 is a waist-shaped groove provided along the length direction of the folding base plate 261, and the first connecting rod 2771 passes through the first connecting groove 2612 and is connected to the first slider 262.

[0048] When the gas meter contacts the buffer plate 253 and pushes the buffer plate 253 to move, the buffer plate 253 drives the push plate 271 to move. When the push plate 271 moves, the first push rod 2751 pulls the second slider 275 on the mounting plate 274 to slide close to the buffer plate 253. The second slider 275 slides through the first protrusion 2761 and moves on the slide rail 2752, thereby driving the turntable 276 to rotate counterclockwise. The turntable 276 pushes the second push rod 2763 to move through the second protrusion 2762. The second push rod 2763 pushes the third slider 277 on the mounting plate 274 to slide away from the turntable 276, thereby causing the third slider 277 to slide in the direction away from the turntable 276. 77 pushes the resisting plate 263 to slide on the folding bottom plate 261 in the direction away from the buffer plate 253 through the first connecting rod 2771. In this embodiment, after the buffer plate 253 resists and buffers the gas meter, the second cylinder 272 controls the pulling plate 273 to move and fold, so that the pulling plate 273 contacts and stays with the pushing plate 271, to prevent the gas meter that contacts the buffer plate 253 from retreating during transportation and causing the buffer plate 253 to reset. The pulling plate 273 limits the buffer plate 253, so that the gas meter can stay at the specified position, and at the same time, it can also assist the buffer plate 253 to drive the pushing plate 271 to move, thereby ensuring that the opening and closing control component 28 is opened smoothly.

[0049] Reference Figure 5 , Figure 6 and Figure 7The opening and closing control assembly 28 includes a push piece 282, which is fixedly mounted on the third slider 277. A chamfered surface is provided on the side of the push piece 282 away from the third slider 277. One end of the chamfered surface on the push piece 282 close to the rotating disk 276 is higher than the other end. A support plate 285 is fixedly mounted on the mounting plate 274. The support plate 285 is arranged on the side of the push piece 282 away from the third slider 277. A third push rod 2861 is slidably mounted on the support plate 285. The third push rod 2861 is slidably mounted on the third push rod 2861. A second fixing plate 2862 is fixedly installed on 61, and a third spring 2863 is sleeved on the third push rod 2861. One end of the third spring 2863 is fixedly connected to the support plate 285, and the other end is fixedly connected to the second fixing plate 2862. The third push rod 2861 is acted on by the third spring 2863 to resist the bevel surface of the third slider 277. The third push rod 2861 is fixedly connected with a second connecting rod 287, and the second connecting rod 287 is slidably installed in the first transport frame 22.

[0050] A fifth push rod 2882 is hinged on the upper portion of the second connecting rod 287, and a fourth slide groove 221 is provided on the first transport frame 22 and the folding base plate 261. The groove depth of the fourth slide groove 221 is greater than the groove depth of the folding groove 2611. The first transport frame 22 and the folding base plate 261 are slidably installed with a fourth push rod 2881 through the fourth slide groove 221, and the end of the fifth push rod 2882 away from the second connecting rod 287 is hinged to the fourth push rod 2881. The end of the fourth push rod 2881 away from the fifth push rod 2882 is hinged to the seventh push rod 2884, the sixth push rod 2883 is hinged on the folding base plate 261, the hinge point of the sixth push rod 2883 is set in the fourth slide groove 221, the end of the seventh push rod 2884 away from the fourth push rod 2881 is hinged to the sixth push rod 2883, the fifth slide groove 2631 is opened on the support plate 263, and the end of the sixth push rod 2883 close to the support plate 263 is slidably connected to the support plate 263 through the fifth slide groove 2631.

[0051] Before the gas meter is blocked and buffered, the blocking plate 263 is folded on the folding bottom plate 261. When the gas meter is blocked and buffered to move the third slider 277, the third slider 277 drives the push piece 282 to move. The oblique surface of the push piece 282 abuts against the third push rod 2861. The third push rod 2861 is pushed to slide on the support plate 285 by the action of the oblique surface. The third push rod 2861 drives the second connecting rod 287 to move. The second connecting rod 287 Push the fifth push rod 2882 to make the fourth push rod 2881 slide in the fourth slide groove 221, the fourth push rod 2881 pushes the seventh push rod 2884 to move, the seventh push rod 2884 pushes the sixth push rod 2883 to rotate on the folding bottom plate 261, the sixth push rod 2883 slides on the retaining plate 263 to push the retaining plate 263 away from the folding bottom plate 261 and support it, so that the retaining plate 263 can quickly open on the folding bottom plate 261 to block the next gas meter.

[0052] Reference Figure 3 , Figure 4 and Figure 5 When the gas meter is transferred from the position of the buffer plate 253, the second cylinder 272 controls the pull plate 273 to move away from the push plate 271, providing a movable space for the push plate 271, and pushes the buffer plate 253 back to its original position through the first spring 255. The buffer plate 253 drives the push plate 271 to move, and the push plate 271 drives the first push rod 2751 to move. The first push rod 2751 pushes the second slider 275 to slide on the first slide groove 2741. The sliding of the second slider 275 drives the slide rail 2752 to move. Through the action of the first protrusion 2761, the slide rail 2752 pushes the turntable 276 to rotate clockwise, and the turntable 276 pulls the second push rod 2763 to move. The second push rod 2763 pulls the third slider 277 to slide on the second slide groove 2742.

[0053] Reference Figure 5 , Figure 6 and Figure 7 The third slider 277 drives the push piece 282 to move toward the direction close to the rotating disk 276. Through the action of the beveled surface on the push piece 282, the third spring 2863 pulls the third push rod 2861 to move close to the push piece 282. The third push rod 2861 drives the second connecting rod 287 to move close to the push piece 282. The second connecting rod 287 drives the fourth push rod 2881 to slide in the direction away from the sixth push rod 2883, thereby pulling the seventh push rod 2884 to the fourth slide groove 22 1, the seventh push rod 2884 pulls the sixth push rod 2883 to rotate, so that the retaining plate 263 is retracted on the retracting bottom plate 261, and at the same time, the third slider 277 pulls the retaining plate 263 on the retracting bottom plate 261 to slide in the forward direction along with the gas meter, so that during the transportation of the gas meter on the conveyor belt, the force of the retaining plate 263 on the gas meter is reduced to prevent the gas meter from being scratched, and the retaining plate 263 is also convenient for quickly retracting on the retracting bottom plate 261.

[0054] Reference Figure 8The second transport device 3 includes a second mounting frame 31, which is mounted on the chassis 1. A second transport frame 32 is fixedly mounted on the second mounting frame 31. The second transport frame 32 is mounted in the chassis 1 through the discharge port 12 near one end of the chassis 1. A second conveyor belt 33 is mounted on the second transport frame 32. A second motor 34 for controlling the operation of the second conveyor belt 33 is mounted on the second transport frame 32. A partition plate 35 is fixedly mounted on the second transport frame 32. The partition plate 35 divides the second conveyor belt 33 into two sides. In this embodiment, a transfer device for transferring the gas meter from the first transport device 2 to the positioning device 4 and from the positioning device 4 to the second transport device 3 is installed in the chassis 1. The transfer device is configured as a mechanical gripper. Because the mechanical gripper is a conventional grasping and transporting technology, it belongs to the prior art and does not affect the technical solution of the embodiment of the present application. The mechanical gripper is not shown in the figure.

[0055] After the sealing test of the gas meter is completed, if the air tightness of the gas meter is qualified, the robotic arm will grab the gas meters on the positioning device 4 and place them on one side of the partition 35 on the second conveyor belt 33. If the air tightness test of the gas meter fails, the robotic arm will grab the gas meters on the positioning device 4 and place them on the other side of the partition 35 on the second conveyor belt 33. The qualified and unqualified gas meters after the test are transported separately, which is convenient for subsequent staff to maintain the unqualified gas meters, and the second conveyor belt 33 is controlled by the second motor 34 to transport the gas meters, so as to quickly transport the gas meters out of the chassis 1.

[0056] Reference Fig. 9 Four sets of positioning devices 4 are arranged in a row in the chassis 1. The positioning devices 4 include a first cylinder 41, which is fixedly mounted on the chassis 1 and arranged below the detection device 5. The output shaft of the first cylinder 41 is fixedly connected with a lifting plate 42. A third mounting frame 43 is fixedly mounted in the chassis 1. A parallel clamping cylinder 44 for clamping the gas meter is fixedly mounted on the third mounting frame 43. A clamping plate 45 is fixedly mounted on the movable clamping jaw of the parallel clamping cylinder 44. The parallel clamping cylinder 44 in this embodiment is a prior art and will not be described in detail in the present application.

[0057] The detection device 5 includes a mounting platform 51, which is fixedly mounted on the third mounting frame 43. The mounting platform 51 is arranged above the clamping plate 45. Two ventilation pipes 52 are fixedly mounted on the mounting platform 51. The interval between the two ventilation pipes 52 is the same as the interval between the air inlet and the air outlet of the gas meter. The two ventilation pipes 52 are connected to a gas source, and expansion plugs are fixedly mounted at the outlets of the two ventilation pipes 52. An air pressure detection tube 53 is installed on the mounting platform 51. The air pressure detection tube 53 is connected to the two ventilation pipes 52 inside the mounting platform 51. The end of the air pressure detection tube 53 away from the mounting platform 51 is connected to the air pressure tester, and the air pressure tester is fixedly mounted on the chassis 1.

[0058] The mechanical gripper places the gas meter on the lifting plate 42, and the first cylinder 41 controls the movement of the lifting plate 42 to lift the gas meter so that the air inlet and outlet of the gas meter are inserted into the two ventilation pipes 52. The parallel clamp cylinder 44 controls the clamp plate 45 to clamp and fix the gas meter. After the fixation is completed, the ventilation pipe 52 ventilates the inside of the gas meter from the air inlet and outlet. The air pressure tester connected to the air pressure detection tube 53 detects whether the air pressure inside the gas meter is stable after the gas is introduced. The air tightness of the gas meter is judged by the internal air pressure of the gas meter, thereby achieving a rapid detection of the air tightness of the gas meter.

[0059] The implementation principle of the embodiment of the present application is as follows: the gas meter is placed on the first conveyor belt 23, the first motor 24 controls the first conveyor belt 23 to operate to transport the gas meter, and when the gas meter contacts the buffer plate 253, the buffer plate 253 and the guide slide bar 252 are pushed to slide on the first fixed plate 251, and the buffer plate 253 squeezes the first spring 255 so that the first spring 255 generates elastic force to buffer the buffer plate 253, thereby preventing the gas meter from colliding with the buffer plate 253 during transportation and causing damage to the gas meter, and then the mechanical gripper places the gas meter on the lifting plate 4 2, the first cylinder 41 controls the lifting plate 42 to move and lift the gas meter, so that the air inlet and the air outlet of the gas meter are inserted into the two ventilation pipes 52, and the parallel clamping claw cylinder 44 controls the clamping plate 45 to clamp and fix the gas meter. After the fixation is completed, the ventilation pipe 52 ventilates the inside of the gas meter from the air inlet and the air outlet, and the air pressure tester connected by the air pressure detection tube 53 detects whether the air pressure inside the gas meter is stable after the gas is introduced, which is convenient for quickly detecting the air tightness of the gas meter, and is conducive to improving the convenience of the automatic air tightness detection device of the gas meter during use.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic air tightness detection device for a diaphragm gas meter, characterized in that: The invention comprises a case (1), the case (1) being connected to a first transport device (2) for transporting a gas meter into the case (1) and a second transport device (3) for transporting the gas meter out of the case (1), the first transport device (2) being installed with a buffer component (25) for slowing down the gas meter, the buffer component (25) comprising a first fixing plate (251), the first fixing plate (251) being connected to the first transport device (2), the first fixing plate (251) being connected to a buffer plate (253) for buffering the gas meter, the buffer plate (253) being connected to A resisting assembly (26) is provided to prevent gas meters from pressing against each other. A positioning device (4) for fixing the gas meter is installed in the chassis (1). A detection device (5) for detecting the air tightness of the gas meter is installed in the chassis (1). The resisting assembly (26) comprises a folding bottom plate (261). The folding bottom plate (261) is connected to the first transport device (2). A folding groove (2611) is provided on the folding bottom plate (261). The folding bottom plate (261) is slidably connected to a first slider (262) via the folding groove (2611). The first slider A stop plate (263) is hingedly connected to the stop plate (262), the stop plate (263) is connected to a driving assembly (27) whose movement is controlled by the buffer plate (253), the stop plate (263) is connected to an opening and closing control assembly (28) whose folding and retraction is controlled by the buffer plate (253), the driving assembly (27) comprises a push plate (271), the push plate (271) is connected to the buffer plate (253), the push plate (271) is connected to a first push rod (2751), the first transport device (2) is mounted with a mounting plate (274), the mounting plate (274) A first slide groove (2741) is provided on the mounting plate (274), a second slider (275) is slidably mounted on the mounting plate (274) through the first slide groove (2741), the first push rod (2751) is connected to the second slider (275), a slide rail (2752) is mounted on the second slider (275), a turntable (276) is rotatably mounted on the mounting plate (274), a first protrusion (2761) and a second protrusion (2762) are eccentrically arranged on the turntable (276), and the first protrusion (2761) is slidably connected to the slide rail (2752);The mounting plate (274) is provided with a second slide groove (2742), and a third slider (277) is slidably mounted on the mounting plate (274) through the second slide groove (2742). The third slider (277) is hinged with a second push rod (2763), and the second push rod (2763) is hinged with the second protrusion (2762). The third slider (277) is connected with a first connecting rod (2771), and the folding bottom plate (261) is provided with a first connecting groove (2612). The first connecting rod (2771) passes through the first connecting groove (2612) and is connected to the first slider ( The opening and closing control assembly (28) is connected to the third slider (277), the opening and closing control assembly (28) comprises a push piece (282), the push piece (282) is mounted on the third slider (277), a support plate (285) is mounted on the mounting plate (274), a third push rod (2861) is slidably mounted on the support plate (285), a second fixed plate (2862) is mounted on the third push rod (2861), a third spring (2863) is sleeved on the third push rod (2861), one end of the third spring (2863) is connected to the second fixed plate (2862), and the other end is connected to the support plate (285), the The push piece (282) is provided with an oblique surface, the third push rod (2861) is against the oblique surface of the push piece (282) through the third spring (2863), the third push rod (2861) is connected to the second connecting rod (287), the folding bottom plate (261) is provided with a fourth slide groove (221), the groove depth of the fourth slide groove (221) is greater than the groove depth of the folding groove (2611), the folding bottom plate (261) is slidably mounted with a fourth push rod (2881) through the fourth slide groove (221), and the fourth push rod (2881) is hinged with a fifth push rod (2882) , the fifth push rod (2882) is hinged to the second connecting rod (287), a sixth push rod (2883) is hinged to the folding bottom plate (261), a hinge point of the sixth push rod (2883) is arranged in the fourth slide groove (221), a seventh push rod (2884) is hinged to the sixth push rod (2883), the seventh push rod (2884) is hinged to the fourth push rod (2881), a fifth slide groove (2631) is provided on the stop plate (263), and the sixth push rod (2883) is slidably connected to the stop plate (263) through the fifth slide groove (2631). ; 2. The automatic air tightness detection device for a diaphragm gas meter according to claim 1 is characterized in that: A guide slide bar (252) is slidably mounted on the first fixed plate (251), one end of the guide slide bar (252) is connected to the buffer plate (253), a first limit block (254) is mounted on one end of the guide slide bar (252) away from the buffer plate (253), a first spring (255) is sleeved on the guide slide bar (252), one end of the first spring (255) is connected to the buffer plate (253), and the other end is connected to the first fixed plate (251).

3. The automatic air tightness detection device for a diaphragm gas meter according to claim 1 is characterized in that: The first transport device (2) comprises a first mounting frame (21), the first mounting frame (21) being connected to the chassis (1), a first transport frame (22) being mounted on the first mounting frame (21), a first conveyor belt (23) being mounted on the first transport frame (22), and a first motor (24) for controlling the operation of the first conveyor belt (23) being mounted on the first transport frame (22).

4. The automatic air tightness detection device for a diaphragm gas meter according to claim 3 is characterized in that: A guide plate (256) is installed on one end of the first transport frame (22) close to the buffer plate (253), and a side of the guide plate (256) away from the buffer plate (253) is arranged in an arc shape.

5. The automatic air tightness detection device for a diaphragm gas meter according to claim 1 is characterized in that: The second transport device (3) comprises a second mounting frame (31), the second mounting frame (31) being connected to the chassis (1), a second transport frame (32) being mounted on the second mounting frame (31), a second conveyor belt (33) being mounted on the second transport frame (32), a second motor (34) for controlling the operation of the second conveyor belt (33) being connected to the second transport frame (32), and a partition plate (35) being mounted on the second transport frame (32), the partition plate (35) dividing the second conveyor belt (33) into two sides.

6. The automatic air tightness detection device for a diaphragm gas meter according to claim 1 is characterized in that: The positioning device (4) comprises a first cylinder (41), the first cylinder (41) being mounted on the chassis (1), the output shaft of the first cylinder (41) being connected to a lifting plate (42), the chassis (1) being mounted with a third mounting frame (43), the third mounting frame (43) being mounted with a parallel clamping cylinder (44), the movable clamping jaws of the parallel clamping cylinder (44) being mounted with a clamping plate (45) for clamping the gas meter, the clamping plate (45) being arranged above the lifting plate (42).

7. The automatic air tightness detection device for a diaphragm gas meter according to claim 6 is characterized in that: The detection device (5) comprises a mounting platform (51), wherein the mounting platform (51) is mounted on the third mounting frame (43), the mounting platform (51) is arranged above the clamping plate (45), two ventilation pipes (52) are mounted on the mounting platform (51), the ventilation pipes (52) are connected to a gas source, the spacing between the two ventilation pipes (52) is the same as the spacing between the air inlet and the air outlet of the gas meter, and an expansion plug for sealing is mounted at the air outlet end of the ventilation pipe (52), and an air pressure detection pipe (53) is mounted on the mounting platform (51), and the air pressure detection pipe (53) is connected to the two ventilation pipes (52) in the mounting platform (51).

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