A fire-fighting gas cylinder filling interface detection device

Abstract

The present invention discloses a fire-fighting gas cylinder filling interface detection device, which relates to the field of cylinder detection technology, including a detection frame for carrying the cylinder, an inner threaded sleeve adapted to the thread of the outer threaded pipe is rotatably installed on the translation frame, a screw-in docking assembly for driving the inner threaded sleeve to screw in relative to the outer threaded pipe toward the side of the bottle valve is installed on the translation frame, a detection assembly connected with the inner threaded sleeve is installed on the translation frame, and a locking assembly for abutting the outer wall of the cylinder is installed on the rotating shaft. The present invention docks the inner threaded sleeve with the outer threaded pipe through the provided inner threaded sleeve, and after the cylinder is filled with fire-fighting gas and maintained for a certain period of time, the sealing performance of the outer threaded pipe is detected by means of the numerical change of the barometer, and when the provided rotating docking assembly drives the inner threaded sleeve to dock with the outer threaded pipe, the sliding drive assembly drives the limit slide to move toward the direction of the inner threaded sleeve, which effectively improves the docking stability and operation convenience of the inner threaded sleeve and the outer threaded pipe.

Description

Technical Field

[0001] The invention relates to the technical field of steel cylinder detection, in particular to a filling interface detection device for a fire-fighting gas steel cylinder. Background Art

[0002] Gas fire fighting refers to the use of gas fire extinguishing agents to extinguish fires. The so-called gas fire extinguishing agents are usually stored in liquid, liquefied gas or gas in pressure vessels. When extinguishing a fire, they are sprayed in a gaseous state and can form a uniform concentration of fire extinguishing agent gas in all directions in the protected area space, and can at least maintain the fire extinguishing concentration to the specified immersion time, thereby extinguishing the space and three-dimensional fire in the protected area.

[0003] Fire-fighting gases such as carbon dioxide, halogenated hydrocarbons or inert gases are filled into special fire-fighting gas cylinders for storage. When conducting safety inspections on fire-fighting gas cylinders, a detection device is used to detect the sealing performance of the filling interface of the fire-fighting gas cylinder. However, the existing detection device cannot effectively limit the cylinder valve on the top of the cylinder during the detection operation. When the detection device is connected to the external threaded pipe on the cylinder valve, the docking operation convenience and connection stability are poor, which is not conducive to improving the detection efficiency of the cylinder filling interface and the accuracy of the detection results. For this reason, a fire-fighting gas cylinder filling interface detection device is provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a fire-fighting gas cylinder filling interface detection device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fire-fighting gas cylinder filling interface detection device comprises a detection frame for carrying the cylinder, a cylinder valve is installed on the top of the cylinder, an external threaded tube is installed on the side wall of the cylinder valve, a lifting frame is vertically slidably installed on the detection frame through a lifting assembly, a hanger is fixed on the top of the lifting frame, a translation frame is slidably installed on the hanger, an inner thread sleeve adapted to the thread of the external threaded tube is rotatably installed on the translation frame, a screw-in docking assembly for driving the inner thread sleeve to screw in relative to the external threaded tube toward the bottle valve side is installed on the translation frame, a detection assembly connected with the inner thread sleeve is installed on the translation frame, and the translation A translation block slidably connected to the hanger is fixed on the top of the frame, a vertically arranged limit slide is slidably installed on the translation frame, a push block corresponding to the side of the bottle valve away from the external threaded pipe is fixed at the lower end of the limit slide, a sliding drive assembly for driving the limit slide to slide relative to the hanger is installed on the translation block and the translation frame, an annular frame located below the hanger is fixed on the lifting frame, the annular frame is sleeved on the steel cylinder, a plurality of circumferentially evenly distributed rotating shafts are rotatably installed on the annular frame, and locking assemblies for abutting against the outer wall of the steel cylinder are installed on the rotating shafts.

[0007] As an improved solution of the present invention: the screw-in docking assembly includes a motor I fixed to the hanger, the output shaft of the motor I is coaxially fixed with a threaded rod threadedly connected to the translation frame, a cylindrical spur gear is fixedly sleeved on the threaded rod, and an external gear ring meshing with the cylindrical spur gear is fixedly sleeved on the inner thread sleeve.

[0008] As an improved solution of the present invention: the detection component includes a connecting joint connected to the inner thread sleeve through a rotating joint, an extension frame is fixed between the connecting joint and the translation frame, and a pressure gauge and an air inlet pipe are installed on the side wall of the connecting joint.

[0009] As an improved solution of the present invention: the sliding drive assembly includes an L-shaped plate rotatably mounted on the hanger, a top block is fixed on the top of the limiting slide, a transmission column abutting the L-shaped plate is fixed on the top block, a vertical plate is fixed on the top block, a fixed plate is fixed on the hanger, and a connecting spring is fixed between the fixed plate and the vertical plate.

[0010] As an improved solution of the present invention: the sliding drive assembly also includes a sliding groove opened on the L-shaped plate, a guide block is linearly slidably installed on the sliding groove, a connecting rod is hinged between the guide block and the translation block, and a limit spring located in the sliding groove is fixed between the guide block and the L-shaped plate.

[0011] As an improved solution of the present invention: the locking assembly includes a clamping plate fixed on the rotating shaft, a torsion spring is fixedly connected between the clamping plate and the annular frame, a rotating ring plate is rotatably mounted on the annular frame, and an inner ring gear meshing with the transmission gear is fixed on the inner wall of the rotating ring plate.

[0012] As an improved solution of the present invention: the locking assembly also includes a motor II fixed to the bottom of the lifting frame, the output shaft of the motor II is coaxially fixed with a worm, the worm is meshed with a worm wheel, the worm wheel is coaxially fixed with a transmission gear, and the transmission gear is meshed with an arc-shaped rack fixed to the outer wall of the rotating ring plate.

[0013] As an improved solution of the present invention: a plurality of stop sliders are vertically slidably mounted on the annular frame and are adapted to abut against the clamping plates one by one, a vertical spring is fixed between the stop slider and the annular frame, and a wedge surface I and a wedge surface II are provided on the stop slider.

[0014] As an improved solution of the present invention: the lifting assembly includes a motor III fixed on the detection frame, the output shaft of the motor III is coaxially fixed with a vertically arranged screw rod, the screw rod is threadedly sleeved with a lifting slider vertically slidably connected to the detection frame, and the lifting slider is fixed to the lifting frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention connects the inner thread sleeve with the outer thread pipe, fills the cylinder with fire-fighting gas and maintains it for a certain period of time, and detects the sealing performance of the outer thread pipe with the help of the value change of the pressure gauge. When the rotating docking component drives the inner thread sleeve to connect with the outer thread pipe, the sliding drive component drives the limiting slide to move toward the direction of the inner thread sleeve, so that the push block can effectively limit the bottle valve, effectively improving the docking stability and operating convenience of the inner thread sleeve and the outer thread pipe, and the detection operation efficiency is significantly improved.

[0017] 2. The present invention achieves a stable limiting effect on the cylinder, the cylinder valve and the external threaded pipe after the clamping plates lock and clamp the cylinder valve by rotating the multiple clamping plates on the annular frame. When the air tightness test is performed after the inner thread sleeve and the external threaded pipe are docked, a tight, stable and reliable docking effect is achieved, which greatly improves the accuracy and ease of operation of the cylinder detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present invention before testing the steel cylinder;

[0019] Figure 2 It is a schematic diagram of the present invention when testing a steel cylinder;

[0020] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of the middle A part;

[0021] Figure 4 For the present invention Figure 2 Schematic diagram from a certain perspective;

[0022] Figure 5 It is a connection diagram of components such as a translation frame, a limit slide frame and a sliding drive assembly in the present invention;

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the local structure;

[0024] Figure 7 It is a schematic diagram of the connection of the components such as the translation frame, the screw-in docking assembly and the inner thread sleeve of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection of the rotating ring plate, the inner gear ring, the arc-shaped rack and the transmission gear in the present invention;

[0026] Fig. 9 It is a schematic diagram of the connection between the annular frame and the locking assembly in the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the locking assembly in the present invention when the clamping plate abuts against the wedge surface I;

[0028] Fig.11 It is a schematic diagram of the connection of the clamping plate, the stop slider, the transmission gear and other components in the present invention.

[0029] In the figure: 1-detection frame, 2-steel cylinder, 3-lifting frame, 4-hanging frame, 5-bottle valve, 6-external thread pipe, 7-motor I, 8-motor II, 9-limiting slide, 10-internal thread sleeve, 11-inner gear ring, 12-annular frame, 13-clamping plate, 14-translation frame, 15-pushing block, 16-rotating ring plate, 17-external gear ring, 18-motor III, 19-lifting slider, 20-screw rod, 21-connecting rod, 22-L-shaped plate, 23-guide block, 24-connecting spring, 25- Vertical plate, 26-fixed plate, 27-extension frame, 28-rotating joint, 29-barometer, 30-connecting joint, 31-inlet pipe, 32-arc rack, 33-transmission gear, 34-worm gear, 35-worm, 36-wedge surface I, 37-wedge surface II, 38-torsion spring, 39-vertical spring, 40-transmission column, 41-translation block, 42-slide, 43-cylindrical spur gear, 44-rotating shaft, 45-threaded rod, 46-top block, 47-stop slider, 48-limit spring. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments:

[0031] Example 1

[0032] See also Figure 1-11 A fire-fighting gas cylinder filling interface detection device comprises a detection frame 1 for carrying a cylinder 2, a cylinder valve 5 is installed on the top of the cylinder 2, an external threaded pipe 6 is installed on the side wall of the cylinder valve 5, a lifting frame 3 is vertically slidably installed on the detection frame 1 through a lifting component, a hanger 4 is fixed on the top of the lifting frame 3, a translation frame 14 is slidably installed on the hanger 4, an inner thread sleeve 10 threadably matched with the external threaded pipe 6 is rotatably installed on the translation frame 14, a screw-in docking component for driving the inner thread sleeve 10 to screw in relative to the external threaded pipe 6 toward the side of the cylinder valve 5 is installed on the translation frame 14, a detection component connected with the inner thread sleeve 10 is installed on the translation frame 14, and a detection component connected with the inner thread sleeve 10 is installed on the translation frame 14. A translation block 41 slidably connected to the hanger 4 is fixed to the top of the moving frame 14, a vertically arranged limit slide 9 is slidably installed on the translation frame 14, a push block 15 corresponding to the side of the bottle valve 5 away from the external threaded pipe 6 is fixed to the lower end of the limit slide 9, a sliding drive assembly for driving the limit slide 9 to slide relative to the hanger 4 is installed on the translation block 41 and the translation frame 14, an annular frame 12 located below the hanger 4 is fixed on the lifting frame 3, the annular frame 12 is sleeved on the steel cylinder 2, a plurality of circumferentially evenly distributed rotating shafts 44 are rotatably installed on the annular frame 12, and locking assemblies for abutting against the outer wall of the steel cylinder 2 are installed on the rotating shafts 44.

[0033] When the device is used to perform a sealing inspection on the outer threaded tube 6 of the steel cylinder 2, the steel cylinder 2 is placed on the inspection frame 1, and the lifting frame 3 is driven to move vertically by the provided lifting assembly, so that the lifting frame 3 drives the hanger 4 to move downward until the inner threaded sleeve 10 is axially aligned with the outer threaded tube 6, and the inner threaded sleeve 10 is driven to move toward the outer threaded tube 6 by the provided screw-in assembly, so that the outer threaded tube 6 and the inner threaded sleeve 10 are sealed and docked, and the sealing inspection operation on the outer threaded tube 6 is realized with the help of the inspection assembly.

[0034] Specifically, the screw-in docking assembly includes a motor I7 fixed to the hanger 4, the output shaft of the motor I7 is coaxially fixed with a threaded rod 45 threadedly connected to the translation frame 14, a cylindrical spur gear 43 is fixedly sleeved on the threaded rod 45, and an outer gear ring 17 meshing with the cylindrical spur gear 43 is fixedly sleeved on the inner thread sleeve 10.

[0035] The motor I7 can drive the threaded rod 45 to rotate, and the threaded rod 45 drives the translation frame 14 to slide. At this time, the translation frame 14 drives the inner thread sleeve 10 to move toward the outer thread pipe 6 and dock with it. At the same time, since the threaded rod 45 drives the cylindrical spur gear 43 to rotate during rotation, the cylindrical spur gear 43 drives the outer gear ring 17 to rotate, and the outer gear ring 17 drives the inner thread sleeve 10 to rotate. Under the action of the thread cooperation, the inner thread sleeve 10 is screwed in relative to the outer thread pipe 6, and finally the outer thread pipe 6 and the inner thread sleeve 10 are tightly docked. The above docking process is simple and efficient, and has a high degree of operational convenience.

[0036] The detection assembly includes a connecting joint 30 connected to the inner thread sleeve 10 through a rotating joint 28, an extension frame 27 is fixed between the connecting joint 30 and the translation frame 14, and a pressure gauge 29 and an air inlet pipe 31 are connected and installed on the side wall of the connecting joint 30. Firefighting gas is transported through the air inlet pipe 31, and after entering the connecting joint 30, the firefighting gas enters the inner thread sleeve 10 through the rotating joint 28, and then enters the cylinder 2 through the outer thread pipe 6 for simulated inflation. When the value of the pressure gauge 29 reaches the set value, the pressure is maintained for a certain period of time, and the sealing of the outer thread pipe 6 is detected by the change of the value of the pressure gauge 29.

[0037] In addition, the sliding drive assembly of the device includes an L-shaped plate 22 rotatably mounted on the hanger 4, a top block 46 is fixed on the top of the limit slide 9, a transmission column 40 abutting against the L-shaped plate 22 is fixed on the top block 46, a vertical plate 25 is fixed on the top block 46, a fixed plate 26 is fixed on the hanger 4, and a connecting spring 24 is fixed between the fixed plate 26 and the vertical plate 25. The sliding drive assembly also includes a slide groove 42 opened on the L-shaped plate 22, a guide block 23 is linearly slidably mounted on the slide groove 42, a connecting rod 21 is hinged between the guide block 23 and the translation block 41, and a limit spring 48 located in the slide groove 42 is fixed between the guide block 23 and the L-shaped plate 22.

[0038] Through the above-mentioned arrangement, in the process of the inner thread sleeve 10 being rotated relative to the outer thread pipe 6 for docking therewith, the set translation frame 14 drives the translation block 41 to move, and at this time the translation block 41 drives the L-shaped plate 22 to rotate through the annular frame 12 and the guide block 23, and at this time the L-shaped plate 22 pushes the transmission column 40, and the transmission column 40 drives the top block 46 and the limiting slide 9 to slide toward the bottle valve 5 corresponding thereto laterally, so that the pushing block 15 abuts against the bottle valve 5, and then when the inner thread sleeve 10 is rotated relative to the outer thread pipe 6 for docking therewith, the L-shaped plate 22 no longer rotates, and the guide block 23 slides relative to the L-shaped plate 22 under the traction of the limiting spring 48 until the inner thread sleeve 10 is stably docked relative to the outer thread pipe 6.

[0039] The above process realizes that before the inner thread sleeve 10 is docked with the outer thread pipe 6, the push block 15 abuts the bottle valve 5. When and after the inner thread sleeve 10 is docked with the outer thread pipe 6, the opposing forces of the push block 15 and the inner thread sleeve 10 enable the bottle valve 5 to obtain a stable positioning effect, effectively improving the smoothness of the docking operation process of the inner thread sleeve 10 relative to the outer thread pipe 6, and at the same time the convenience of the detection operation is significantly improved.

[0040] Example 2

[0041] See also Figure 1-11 On the basis of Example 1, in addition, the lifting component includes a motor III18 fixed on the detection frame 1, and the output shaft of the motor III18 is coaxially fixed with a vertically arranged screw rod 20, and a lifting slider 19 vertically slidably connected to the detection frame 1 is threadedly sleeved on the screw rod 20, and the lifting slider 19 is fixed to the lifting frame 3.

[0042] The motor III18 can drive the screw rod 20 to rotate, and the screw rod 20 drives the lifting slider 19 to move vertically downward. At this time, the lifting slider 19 drives the lifting frame 3 and the annular frame 12 to move downward. After the inner thread sleeve 10 and the outer thread pipe 6 are axially corresponding, the annular frame 12 is sleeved on the outside of the steel cylinder 2, and the steel cylinder 2 is fixed by the locking assembly.

[0043] Specifically, the locking assembly includes a clamping plate 13 fixed on the rotating shaft 44, a torsion spring 38 is fixedly connected between the clamping plate 13 and the annular frame 12, a rotating ring plate 16 is rotatably mounted on the annular frame 12, an inner ring gear 11 meshing with a transmission gear 33 is fixed to the inner wall of the rotating ring plate 16, and the locking assembly also includes a motor II8 fixed to the bottom of the lifting frame 3, a worm 35 is coaxially fixed to the output shaft of the motor II8, a worm wheel 34 is meshed with the worm 35, a transmission gear 33 is coaxially fixed to the worm wheel 34, and the transmission gear 33 is meshed with an arc-shaped rack 32 fixed to the outer wall of the rotating ring plate 16.

[0044] Through the above arrangement, the motor II8 can drive the worm 35 to rotate, the worm 35 drives the worm wheel 34 meshing with it to rotate, the worm wheel 34 drives the transmission gear 33 to rotate, the transmission gear 33 drives the arc rack 32 to drive the rotating ring plate 16 to rotate, the inner gear ring 11 fixed on the rotating ring plate 16 drives the transmission gear 33 meshing with it to rotate, and at this time the transmission gear 33 drives the clamping plate 13 to rotate toward the center of the annular frame 12, thereby realizing the clamping and locking of the outer wall of the cylinder 2 by multiple clamping plates 13, ensuring the stability of the cylinder 2 during the docking process between the outer threaded pipe 6 and the inner threaded sleeve 10, and ensuring the accuracy of the air tightness detection of the outer threaded pipe 6.

[0045] In addition, a plurality of stop sliders 47 are vertically slidably mounted on the annular frame 12 and are adapted to abut against the clamping plates 13 one by one. A vertical spring 39 is fixed between the stop slider 47 and the annular frame 12. The stop slider 47 is provided with a wedge surface I36 and a wedge surface II37.

[0046] The wedge surface I36 is located on the side of the stop slider 47 facing away from the cylinder 2, and the wedge surface II37 is located on the side of the stop slider 47 facing the cylinder 2. In the initial state, due to the torsion of the torsion spring 38, the clamping plate 13 abuts against the wedge surface I36 of the stop slider 47, and when the clamping plate 13 rotates toward the cylinder 2, the cylinder 2 pushes the wedge surface I36, the stop slider 47 moves down and compresses the vertical spring 39, and then the clamping plate 13 passes over the stop slider 47 to clamp the cylinder 2, and the stop slider 47 is reset. After the clamping plate 13 rotates in the opposite direction, the clamping plate 13 pushes the wedge surface II37 and then passes over the stop slider 47, and the stop slider 47 pushes the clamping plate 13 to achieve the stop limit, so that the cylinder 2 can be unloaded from the inspection frame 1 after the inspection is completed.

[0047] In summary, the present invention docks the inner thread sleeve 10 with the outer thread pipe 6 by setting it, and after filling the steel cylinder 2 with fire gas and maintaining it for a certain period of time, the sealing performance of the outer thread pipe 6 is detected by the numerical change of the barometer 29. When the rotating docking assembly drives the inner thread sleeve 10 to dock with the outer thread pipe 6, the sliding drive assembly drives the limit slide 9 to move toward the direction of the inner thread sleeve 10, so that the push block 15 can achieve an effective limit effect on the bottle valve 5, effectively improving the docking stability and operation convenience of the inner thread sleeve 10 and the outer thread pipe 6, and the detection operation efficiency is significantly improved. The present invention rotates toward the bottle valve 5 through multiple clamping plates 13 set on the annular frame 12, so that the clamping plates 13 can achieve the stable limit effect of the steel cylinder 2, the bottle valve 5 and the outer thread pipe 6 after locking and clamping the bottle valve 5. When the air tightness test is performed after the inner thread sleeve 10 is docked with the outer thread pipe 6, it has a tight, stable and reliable docking effect, which greatly improves the accuracy and ease of operation of the steel cylinder 2 detection.

[0048] It should be noted that although this specification is described according to the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above embodiments only express the preferred implementation methods of the technical solution, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention of the technical solution. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations, improvements and substitutions can be made, which all belong to the protection scope of the present technical solution. The protection scope of the invention of the present technical solution shall be based on the attached claims.

Claims

1. A fire-fighting gas cylinder filling interface detection device, comprising a detection frame (1) for carrying a cylinder (2), a cylinder valve (5) is installed on the top of the cylinder (2), an external thread pipe (6) is installed on the side wall of the cylinder valve (5), and a lifting frame (3) is vertically slidably installed on the detection frame (1) through a lifting assembly, characterized in that: A hanger (4) is fixed on the top of the lifting frame (3), a translation frame (14) is slidably mounted on the hanger (4), an inner thread sleeve (10) threadably matched with the outer thread pipe (6) is rotatably mounted on the translation frame (14), a screw-in docking assembly for driving the inner thread sleeve (10) to be screwed relative to the outer thread pipe (6) toward the bottle valve (5) is mounted on the translation frame (14), a detection assembly connected with the inner thread sleeve (10) is mounted on the translation frame (14), a translation block (41) slidably connected with the hanger (4) is fixed on the top of the translation frame (14), and a vertically arranged limit stopper is slidably mounted on the translation frame (14). The limiting slide (9) is fixed with a push block (15) corresponding to the side of the bottle valve (5) away from the external threaded pipe (6) at the lower end of the limiting slide (9); the translation block (41) and the translation frame (14) are installed with a sliding drive component for driving the limiting slide (9) to slide relative to the hanger (4); the lifting frame (3) is fixed with an annular frame (12) located below the hanger (4); the annular frame (12) is sleeved on the steel cylinder (2); a plurality of circumferentially evenly distributed rotating shafts (44) are rotatably installed on the annular frame (12); the rotating shafts (44) are all installed with locking components for abutting against the outer wall of the steel cylinder (2).

2. A fire-fighting gas cylinder filling interface detection device according to claim 1, characterized in that: The screw-in docking assembly comprises a motor 1 (7) fixed to a hanger (4); a threaded rod (45) threadedly connected to the translation frame (14) is coaxially fixed to the output shaft of the motor 1 (7); a cylindrical spur gear (43) is fixedly sleeved on the threaded rod (45); and an outer gear ring (17) meshing with the cylindrical spur gear (43) is fixedly sleeved on the inner thread sleeve (10).

3. A fire-fighting gas cylinder filling interface detection device according to claim 1, characterized in that: The detection assembly comprises a connecting joint (30) connected to the inner thread sleeve (10) via a rotating joint (28); an extension frame (27) is fixed between the connecting joint (30) and the translation frame (14); and a pressure gauge (29) and an air inlet pipe (31) are installed in communication with the side wall of the connecting joint (30).

4. A fire-fighting gas cylinder filling interface detection device according to claim 1, characterized in that: The sliding drive assembly comprises an L-shaped plate (22) rotatably mounted on the hanger (4); a top block (46) is fixed on the top of the limit slide (9); a transmission column (40) abutting against the L-shaped plate (22) is fixed on the top block (46); a vertical plate (25) is fixed on the top block (46); a fixed plate (26) is fixed on the hanger (4); and a connecting spring (24) is fixed between the fixed plate (26) and the vertical plate (25).

5. A fire-fighting gas cylinder filling interface detection device according to claim 4, characterized in that: The sliding drive assembly also includes a sliding groove (42) provided on the L-shaped plate (22), a guide block (23) being linearly slidably mounted on the sliding groove (42), a connecting rod (21) being hinged between the guide block (23) and the translation block (41), and a limit spring (48) located in the sliding groove (42) being fixed between the guide block (23) and the L-shaped plate (22).

6. A fire-fighting gas cylinder filling interface detection device according to claim 1, characterized in that: The locking assembly comprises a clamping plate (13) fixed on the rotating shaft (44), a torsion spring (38) is fixedly connected between the clamping plate (13) and the annular frame (12), and a rotating ring plate (16) is rotatably mounted on the annular frame (12).

7. A fire-fighting gas cylinder filling interface detection device according to claim 6, characterized in that: The locking assembly also includes a motor II (8) fixed to the bottom of the lifting frame (3), a worm (35) being coaxially fixed to the output shaft of the motor II (8), a worm gear (34) being meshingly connected to the worm gear (35), a transmission gear (33) being coaxially fixed to the worm gear (34), an arc-shaped rack (32) being meshingly connected to the transmission gear (33) being meshingly connected to the transmission gear (33) being meshingly connected to the transmission gear (33) being meshingly connected to the arc-shaped rack (32) fixed to the outer wall of the rotating ring plate (16), and an inner gear ring (11) meshing with the transmission gear (33) being fixed to the inner wall of the rotating ring plate (16).

8. A fire-fighting gas cylinder filling interface detection device according to claim 6, characterized in that: A plurality of stop slide blocks (47) are vertically slidably mounted on the annular frame (12) and are adapted to abut against the clamping plates (13) one by one. A vertical spring (39) is fixed between the stop slide block (47) and the annular frame (12). A wedge surface I (36) and a wedge surface II (37) are formed on the stop slide block (47).

9. A fire-fighting gas cylinder filling interface detection device according to claim 1, characterized in that: The lifting assembly comprises a motor III (18) fixed on the detection frame (1); a vertically arranged screw rod (20) is coaxially fixed to the output shaft of the motor III (18); a lifting slider (19) vertically slidably connected to the detection frame (1) is threadedly sleeved on the screw rod (20); and the lifting slider (19) is fixed to the lifting frame (3).

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