Portable fire-fighting pipeline air tightness detection device

Abstract

The utility model discloses a portable fire-fighting pipeline air tightness detection device, which relates to the technical field of air tightness detection, and comprises a detection box and a mounting seat, a mounting ring is fixedly mounted at the middle position of the right end of the detection box, the right end of the detection box is movably connected with a taper pipe, the taper pipe is in a hollow circular truncated cone shape, and the mounting seat is fixedly mounted at the bottom of the right end of the detection box. Mounting grooves are formed in the upper ends of the mounting seats; the sealing structure is arranged at the joint of the detection box and the taper pipe, the fire fighting pipeline pushes the taper pipe to enter the spring groove, the first spring is compressed to generate opposite force, tight sealing is ensured, and damage is avoided; meanwhile, the limiting ring is in sliding connection with the spring groove, stability is guaranteed, sliding-out is prevented, and the connection reliability is enhanced; fixing structures are arranged on the two sides of the mounting ring, and the arc-shaped clamping blocks get close to each other to clamp fire-fighting pipelines with different pipe diameters by rotating the first screw rod.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to a portable fire-fighting pipeline air tightness detection device. Background Art

[0002] In the maintenance of fire-fighting equipment, the air tightness detection of fire-fighting pipes is an important part of ensuring fire safety. The existing patent announcement number CN220063282U records a fire-fighting pipe air tightness detection device. First, put the fire-fighting pipe on the first base and the second base, then cover the cover plate, then turn the threaded block to turn the bolt upward and snap it into the second slot on the upper part, then tighten the bolt to fix the first base, the second base and the cover plate. After the fixation is completed, start the hydraulic rod, the hydraulic rod extends, and presses on the flange at the end of the fire-fighting pipe, thereby pressing the flange against the first base, the second base and the cover plate. Inner wall; secondly, pull the clamps on both sides toward the middle through the lever, then move the first base to the specified position, then release the lever, and the spring 1 pushes the clamps to both sides so that they press against the slide bar, thereby fixing the first base; finally, when testing air tightness, check the air tightness by inflating air into the pipe. Different pipes have different pressure resistance. The position of the push rod can be adjusted to adjust the tension of the spring 2, and then adjust the maximum pressure that can be tolerated. When the pressure is too high, the air pressure will push open the sealing pad and discharge through the round hole. However, the above device can only meet the needs of pipe diameter detection of unit size, and cannot fix and perform air tightness detection on fire protection pipes of different pipe diameters.

[0003] Based on this, a portable fire-fighting pipe air tightness detection device is now provided, which can eliminate the disadvantages of the existing devices. Utility Model Content

[0004] The utility model aims to provide a portable fire-fighting pipeline air tightness detection device to solve the problem in the background technology that fire-fighting pipelines with different pipe diameters cannot be fixed and air tightness detected.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A portable fire-fighting pipeline air tightness detection device comprises a detection box and a mounting seat, wherein a mounting ring is fixedly installed at the middle position of the right end of the detection box, a cone tube is movably connected to the right end of the detection box, and the cone tube is in a hollow truncated cone shape, and a mounting seat is fixedly installed at the bottom of the right end of the detection box, and a mounting groove is opened at the upper end of the mounting seat;

[0007] It also includes a sealing structure, which is arranged at the connection between the detection box and the cone tube and is used to seal the cone tube and the fire protection pipeline;

[0008] A fixing structure, which is arranged on both sides of the mounting ring and is used to fix fire-fighting pipes of different diameters;

[0009] The adjusting structure is arranged inside the mounting groove and is used to fix fire fighting pipes of different lengths.

[0010] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0011] In an optional solution: the enclosed structure includes a spring groove, a spring groove is opened inside the detection box along the axial direction of the cone tube, the cone tube and the spring groove are movably connected along the axial direction of the cone tube, a first spring is installed inside the spring groove, and a limiting assembly is arranged between the first spring and the cone tube.

[0012] In an optional solution: the limiting assembly includes a limiting ring, one end of the limiting ring is fixedly connected to the first spring, the other end of the limiting ring is fixedly connected to the cone tube, the limiting ring is slidably connected to the spring groove, and the inner diameter of the spring groove is smaller than the outer diameter of the limiting ring.

[0013] In an optional scheme: the fixing structure includes two fixing plates and an arc-shaped clamping block located on one side of the fixing plates, the two fixing plates are respectively located on both sides of the mounting ring, the fixing plates are fixedly connected to the detection box, the arc-shaped clamping block is located on the side where the fixing plates are close to each other, the arc-shaped clamping block is penetrated by a first screw, the first screw is threadedly connected to the fixing plate, one end of the first screw is movably connected to the arc-shaped clamping block, and a movable component is provided at the connection between the first screw and the arc-shaped clamping block.

[0014] In an optional solution: the movable component includes a round block and a connecting groove, the first screw is rotatably connected to the round block at the end near the arc-shaped clamping block, a connecting groove is opened inside the arc-shaped clamping block, the round block is slidably connected to the connecting groove, and a damping spring is installed inside the connecting groove.

[0015] In an optional scheme: the adjustment structure includes a rotating motor, which is installed at the right end of the mounting seat, and the output end of the rotating motor extends to the inside of the mounting groove and is fixedly connected to a bidirectional screw. Limit rods are symmetrically arranged on both sides of the bidirectional screw, and the limit rods are fixedly connected to the inner wall of the mounting groove. The mounting groove is slidably connected to the first base, and both ends of the bidirectional screw are threadedly connected to the first base, and a clamping assembly is arranged on the upper end of the first base.

[0016] In an optional scheme: the clamping assembly includes a second screw and a second base, the second base is installed on the upper end of the first base, the first base and the second base are connected by a second screw, a fixing rod is symmetrically fixed to the top of the second base, the top of the fixing rod is fixedly connected to a limiting plate, the outer wall of the fixing rod is slidably connected to a slide plate, the bottom end of the slide plate is fixedly connected to a sliding rod, the outer wall of the sliding rod is slidably connected to the second base, a third spring is arranged on the outside of the sliding rod, the upper end of the third spring is fixedly connected to the slide plate, the lower end of the third spring is fixedly connected to the second base, and the sliding rod extends to the lower end of the second base and is fixedly connected to a semicircular clamp.

[0017] In an optional solution: a rotating column is rotatably installed at the corner between the detection box and the bottom end of the mounting seat, the lower end of the rotating column is fixedly connected to the wheel cover, and the inside of the wheel cover is rotatably connected to the roller.

[0018] In an optional solution: an electric push rod is installed at the upper end of the wheel cover, the telescopic end of the electric push rod extends to the inside of the wheel cover and is fixedly connected to a fixed block, a rubber pad is installed at the bottom end of the fixed block, and anti-slip grooves are provided at the bottom end of the rubber pad.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The utility model has a closed structure. During the connection process, the narrow end of the cone tube is first inserted into the fire pipe; then, the fire pipe moves along the curve of the cone tube until it is completely fitted; at this time, the extrusion force of the fire pipe pushes the cone tube into the spring groove, compressing the first spring to generate a reverse force to ensure a tight seal and avoid damage; at the same time, the limit ring is slidably connected to the spring groove to ensure stability and prevent slipping, thereby enhancing the connection reliability.

[0021] 2. The utility model uses a fixed structure to rotate the first screw rod so that the arc-shaped clamping blocks are close to each other to clamp fire pipes of different diameters. When the arc-shaped clamping blocks are in contact with the fire pipe, the first screw rod is continuously rotated to compress the damping spring, which can not only firmly fix the fire pipe but also avoid extrusion damage to the fire pipe.

[0022] 3. The utility model cooperates with a rotating column, a wheel cover, a roller, an electric push rod and a fixed block. The device realizes rolling movement through the roller in the wheel cover, reduces resistance and is easy to carry. The rotating column design of the wheel cover increases flexibility. After it is in place, the electric push rod pushes the fixed block to contact the ground to fix the device. The rubber cushion serves as a buffer layer to protect the block, and the anti-slip pattern enhances stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the front end position of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the bottom position of the utility model.

[0026] Figure 4 It is a schematic diagram of the structure inside the detection box of the utility model.

[0027] Figure 5 It is a structural schematic diagram of the fixed structure of the utility model.

[0028] Figure 6 It is a structural schematic diagram of the regulating structure of the utility model.

[0029] Figure 7 It is a structural schematic diagram of the first base and the second base of the utility model.

[0030] Figure 8 It is a structural schematic diagram of the roller of the utility model.

[0031] Notes on figure numbers: 11. detection box; 12. spring groove; 13. first spring; 14. limiting ring; 15. tapered tube; 16. mounting ring; 17. fixing plate; 18. first screw; 19. round block; 20. arc-shaped clamping block; 21. connecting groove; 22. damping spring; 23. mounting seat; 24. mounting groove; 25. rotating motor; 26. bidirectional screw; 27. limiting rod; 28. first base; 29. ​​second screw; 30. second base; 31. semicircular clamping block; 32. sliding rod; 33. third spring; 34. sliding plate; 35. fixing rod; 36. limiting plate; 37. rotating column; 38. wheel cover; 39. roller; 40. electric push rod; 41. fixed block. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] In one embodiment, Figure 1-Figure 8 As shown, a portable fire-fighting pipeline air tightness detection device comprises a detection box 11 and a mounting seat 23. A mounting ring 16 is fixedly mounted at the middle position of the right end of the detection box 11. The right end of the detection box 11 is movably connected to a cone tube 15. The cone tube 15 is in a hollow truncated cone shape. A mounting seat 23 is fixedly mounted at the bottom of the right end of the detection box 11. A mounting groove 24 is provided at the upper end of the mounting seat 23.

[0034] It also includes a sealing structure, which is arranged at the connection between the detection box 11 and the cone tube 15, and is used to seal the cone tube 15 with the fire protection pipeline;

[0035] A fixing structure, which is arranged on both sides of the mounting ring 16 and is used to fix fire-fighting pipes of different diameters;

[0036] The adjusting structure is arranged inside the mounting groove 24 and is used to fix fire fighting pipes of different lengths.

[0037] In this embodiment, the user seals the cone 15 with the fire passage through a sealed structure to ensure a stable and sealed connection between the fire pipe and the detection box 11, thereby facilitating the detection box 11 to perform air tightness detection on the fire passage; the fire pipes of different diameters are fixed by a fixed structure to achieve a stable connection relationship between the fire pipe and the cone 15; the fire pipes of different lengths are fixed by an adjusting structure, and finally, when detecting air tightness, the detection box 11 is started to inflate the fire pipe to check the air tightness.

[0038] In one embodiment, Figure 4 As shown, the enclosed structure includes a spring groove 12. A spring groove 12 is opened inside the detection box 11 along the axial direction of the cone tube 15. The cone tube 15 and the spring groove 12 are movably connected along the axial direction of the cone tube 15. A first spring 13 is installed inside the spring groove 12, and a limiting component is arranged between the first spring 13 and the cone tube 15.

[0039] The narrower end of the cone tube 15 is coaxially inserted into the interior of the fire-fighting pipe, and the fire-fighting pipe gradually moves toward the wider end of the cone tube 15 until the inner wall of the fire-fighting pipe abuts against the outer wall of the cone tube 15. The fire-fighting pipe causes the cone tube 15 to move toward the inside of the spring groove 12. At this time, the first spring 13 is compressed. The first spring 13 provides the cone tube 15 with a force opposite to the extrusion force of the fire-fighting pipe, so that the cone tube 15 and the fire-fighting pipe are tightly connected, and at the same time, extrusion damage between the cone tube 15 and the fire-fighting pipe is avoided.

[0040] In one embodiment, Figure 4 As shown, the limiting assembly includes a limiting ring 14, one end of the limiting ring 14 is fixedly connected to the first spring 13, the other end of the limiting ring 14 is fixedly connected to the cone tube 15, the limiting ring 14 is slidably connected to the spring groove 12, and the inner diameter of the spring groove 12 is smaller than the outer diameter of the limiting ring 14.

[0041] When the conical tube 15 moves into the spring groove 12, the limiting ring 14 is slidably connected with the spring groove 12, so that the conical tube 15 is not easily offset when moving into the spring groove 12. At the same time, the outer diameter of the limiting ring 14 is larger than the inner diameter of the notch of the spring groove 12, thereby preventing the limiting ring 14 from slipping out of the spring groove 12 during movement.

[0042] In one embodiment, Figure 2 and Figure 5As shown, the fixing structure includes two fixing plates 17 and an arc-shaped clamping block 20 located on one side of the fixing plates 17, the two fixing plates 17 are respectively located on both sides of the mounting ring 16, the fixing plates 17 are fixedly connected to the detection box 11, the arc-shaped clamping block 20 is located on the side where the fixing plates 17 are close to each other, the arc-shaped clamping block 20 is penetrated by a first screw 18, the first screw 18 is threadedly connected to the fixing plate 17, one end of the first screw 18 is movably connected to the arc-shaped clamping block 20, and a movable component is provided at the connection between the first screw 18 and the arc-shaped clamping block 20.

[0043] By rotating the first screw 18, the first screw 18 and the fixing plate 17 move relative to each other, and the first screw 18 drives the arc clamping block 20 to move, so that the two opposite arc clamping blocks 20 are close to each other, so that the arc clamping block 20 abuts against the outer wall of the fire pipe, thereby clamping and fixing the fire pipes of different diameters.

[0044] In one embodiment, Figure 5 As shown, the movable component includes a round block 19 and a connecting groove 21. The first screw 18 is rotatably connected to the round block 19 at the end near the arc-shaped clamping block 20. The arc-shaped clamping block 20 has a connecting groove 21 inside. The round block 19 is slidably connected to the connecting groove 21, and a damping spring 22 is installed inside the connecting groove 21.

[0045] When the arc-shaped clamp block 20 abuts against the outer wall of the fire-fighting pipe, the first screw rod 18 is rotated to compress the damping spring 22. The damping spring 22 enables the arc-shaped clamp block 20 to firmly fix the fire-fighting pipe while not easily causing extrusion damage to the fire-fighting pipe.

[0046] In one embodiment, Figure 1 and Figure 6 As shown, the adjustment structure includes a rotating motor 25, which is installed at the right end of the mounting seat 23. The output end of the rotating motor 25 extends to the inside of the mounting groove 24 and is fixedly connected to a bidirectional screw 26. Limit rods 27 are symmetrically arranged on both sides of the bidirectional screw 26. The limit rods 27 are fixedly connected to the inner wall of the mounting groove 24. The mounting groove 24 is slidably connected to the first base 28. Both ends of the bidirectional screw 26 are threadedly connected to the first base 28, and a clamping assembly is arranged on the upper end of the first base 28.

[0047] By starting the rotating motor 25, the rotating motor 25 drives the rotating screw 26 to rotate. Due to the limiting effect of the limit rod 27 on the first base 28, the rotating screw 26 drives the first base 28 to move during the rotation process, thereby making the first bases 28 at both ends of the rotating screw 26 move synchronously in relative or opposite directions. Subsequently, the fire-fighting pipe is fixed by the clamping assembly at the upper end of the first base 28 to adapt to fire-fighting pipes of different lengths.

[0048] In one embodiment, Figure 7 As shown, the clamping assembly includes a second screw 29 and a second base 30. The second base 30 is installed on the upper end of the first base 28. The first base 28 and the second base 30 are connected by the second screw 29. A fixing rod 35 is symmetrically fixed to the top of the second base 30. The top of the fixing rod 35 is fixedly connected to a limit plate 36. The outer wall of the fixing rod 35 is slidably connected to a slide plate 34. The bottom end of the slide plate 34 is fixedly connected to a sliding rod 32. The outer wall of the sliding rod 32 is slidably connected to the second base 30. A third spring 33 is arranged on the outside of the sliding rod 32. The upper end of the third spring 33 is fixedly connected to the slide plate 34. The lower end of the third spring 33 is fixedly connected to the second base 30. The sliding rod 32 extends to the lower end of the second base 30 and is fixedly connected to a semicircular clamp 31.

[0049] First, the user places the fire pipe on the upper end of the first base 28, and then fixes the first base 28 and the second base 30 through the second screw 29. When the semicircular clamp 31 abuts against the outer wall of the fire pipe, the third spring 33 is compressed, and the third spring 33 provides a downward force for the semicircular clamp 31, so that the semicircular clamp 31 cooperates with the first base 28 to clamp and fix the fire pipe.

[0050] In one embodiment, Figure 3 and Figure 8 As shown, a rotating column 37 is rotatably installed at the corner of the bottom end of the detection box 11 and the mounting seat 23, and the lower end of the rotating column 37 is fixedly connected to a wheel cover 38, and the inside of the wheel cover 38 is rotatably connected to a roller 39.

[0051] The roller 39 connected by rotation inside the wheel cover 38 provides a rolling function for the detection box 11. Compared with the traditional fixed or sliding movement, the use of the roller 39 greatly reduces the resistance during movement, making it easier to move the detection box 11 and the mounting base 23. Through the design of the rotating column 37, the wheel cover 38 can be rotated at a certain angle, so that it is convenient for users to carry and transport the device.

[0052] In one embodiment, Figure 3 and Figure 8 As shown, an electric push rod 40 is installed on the upper end of the wheel cover 38, and the telescopic end of the electric push rod 40 extends to the inside of the wheel cover 38 and is fixedly connected to a fixed block 41. A rubber pad is installed on the bottom end of the fixed block 41, and anti-slip grooves are set on the bottom end of the rubber pad.

[0053] When the device moves to the specified position, the electric push rod 40 pushes the fixed block 41 to contact the ground, thereby fixing the position of the device. The rubber pad is used as a buffer layer between the fixed block 41 and the ground, which can protect the fixed block 41 from direct impact and wear to a certain extent and extend its service life. The setting of the anti-slip pattern increases the roughness of the rubber pad and the ground, further enhancing the anti-slip effect and ensuring the stability of the device after positioning.

[0054] The above embodiment discloses a portable fire-fighting pipe air tightness detection device, wherein first, the user moves the device to a specified position through the roller 39, and then pushes the fixed block 41 to contact the ground through the electric push rod 40, thereby fixing the position of the device. Then, the user starts the rotating motor 25, and the rotating motor 25 drives the rotating screw 26 to rotate. Due to the limiting effect of the limit rod 27 on the first base 28, the rotating screw 26 drives the first base 28 to move during the rotation process, thereby causing the first bases 28 at both ends of the rotating screw 26 to move synchronously in relative or opposite directions. Then, the user places the fire-fighting pipe on the upper end of the first base 28, and coaxially inserts the fire-fighting pipe into the fire-fighting pipe through the narrower end of the cone tube 15. The fire-fighting pipe gradually moves toward the wider end of the cone tube 15 until the inner wall of the fire-fighting pipe abuts against the outer wall of the cone tube 15. The fire-fighting pipe causes the cone tube 15 to move into the spring groove 12. At this time, the first spring 13 is compressed, and the first spring 13 provides a force for the cone tube 15 relative to the extrusion force of the fire-fighting pipe, so that the cone tube 15 and the fire-fighting pipe are airtight. The first screw 18 is rotated to make the first screw 18 and the fixing plate 17 move relative to each other, and the first screw 18 drives the arc clamping block 20 to move, so that the two opposite arc clamping blocks 20 are close to each other, so that the arc clamping block 20 abuts against the outer wall of the fire pipe, and then the fire pipes of different diameters are clamped and fixed. When the arc clamping block 20 abuts against the outer wall of the fire pipe, the first screw 18 is rotated to compress the damping spring 22, and the damping spring 2 2 makes it difficult for the arc-shaped clamping block 20 to squeeze and damage the fire-fighting pipe while firmly fixing the fire-fighting pipe. The first base 28 and the second base 30 are fixed by the second screw 29. When the semicircular clamping block 31 abuts against the outer wall of the fire-fighting pipe, the third spring 33 is compressed. The third spring 33 provides a downward force for the semicircular clamping block 31, so that the semicircular clamping block 31 cooperates with the first base 28 to clamp and fix the fire-fighting pipe. Finally, when testing the air tightness, start the testing box 11 to inflate the fire-fighting pipe to check the air tightness.

[0055] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A portable fire-fighting pipeline air tightness detection device, comprising a detection box (11) and a mounting seat (23), wherein a mounting ring (16) is fixedly mounted at the middle position of the right end of the detection box (11), a cone tube (15) is movably connected to the right end of the detection box (11), and the cone tube (15) is in the shape of a hollow truncated cone, a mounting seat (23) is fixedly mounted at the bottom of the right end of the detection box (11), and a mounting groove (24) is provided at the upper end of the mounting seat (23); It is characterized in that It also includes a sealing structure, which is arranged at the connection between the detection box (11) and the cone tube (15) and is used to seal the cone tube (15) and the fire protection pipeline; A fixing structure, which is arranged on both sides of the mounting ring (16) and is used to fix fire-fighting pipes of different diameters; An adjustment structure is provided inside the mounting groove (24) and is used to fix fire fighting pipes of different lengths.

2. The portable fire-fighting pipeline air tightness detection device according to claim 1 is characterized in that: The closed structure comprises a spring groove (12), the detection box (11) is provided with a spring groove (12) along the axial direction of the cone tube (15), the cone tube (15) and the spring groove (12) are movably connected along the axial direction of the cone tube (15), a first spring (13) is installed inside the spring groove (12), and a limit position assembly is arranged between the first spring (13) and the cone tube (15).

3. The portable fire-fighting pipeline air tightness detection device according to claim 2 is characterized in that: The limiting assembly comprises a limiting ring (14), one end of the limiting ring (14) is fixedly connected to the first spring (13), the other end of the limiting ring (14) is fixedly connected to the cone tube (15), the limiting ring (14) is slidably connected to the spring groove (12), and the inner diameter of the groove of the spring groove (12) is smaller than the outer diameter of the limiting ring (14).

4. The portable fire-fighting pipeline air tightness detection device according to claim 1 is characterized in that: The fixing structure comprises two fixing plates (17) and an arc-shaped clamping block (20) located on one side of the fixing plates (17); the two fixing plates (17) are respectively located on both sides of the mounting ring (16); the fixing plates (17) are fixedly connected to the detection box (11); the arc-shaped clamping block (20) is located on one side of the fixing plates (17) close to each other; a first screw rod (18) is passed through the arc-shaped clamping block (20); the first screw rod (18) is threadedly connected to the fixing plates (17); one end of the first screw rod (18) is movably connected to the arc-shaped clamping block (20); and a movable component is provided at the connection between the first screw rod (18) and the arc-shaped clamping block (20).

5. The portable fire-fighting pipeline air tightness detection device according to claim 4 is characterized in that: The movable component comprises a round block (19) and a connecting groove (21); the first screw rod (18) is rotatably connected to the round block (19) at the end close to the arc-shaped clamping block (20); a connecting groove (21) is provided inside the arc-shaped clamping block (20); the round block (19) is slidably connected to the connecting groove (21); a damping spring (22) is installed inside the connecting groove (21).

6. The portable fire-fighting pipeline air tightness detection device according to claim 1 is characterized in that: The adjustment structure comprises a rotating motor (25), the rotating motor (25) is mounted on the right end of the mounting seat (23), the output end of the rotating motor (25) extends to the inside of the mounting groove (24) and is fixedly connected to a bidirectional screw (26), limiting rods (27) are symmetrically arranged on both sides of the bidirectional screw (26), the limiting rods (27) are fixedly connected to the inner wall of the mounting groove (24), the mounting groove (24) is slidably connected to the first base (28), both ends of the bidirectional screw (26) are threadedly connected to the first base (28), and a clamping assembly is arranged on the upper end of the first base (28).

7. The portable fire-fighting pipeline air tightness detection device according to claim 6 is characterized in that: The clamping assembly comprises a second screw rod (29) and a second base (30). The second base (30) is mounted on the upper end of the first base (28). The first base (28) and the second base (30) are connected via the second screw rod (29). A fixing rod (35) is symmetrically fixed to the top of the second base (30). The top of the fixing rod (35) is fixedly connected to a limiting plate (36). The outer wall of the fixing rod (35) is slidably connected to a slide plate (34). The bottom end of the slide plate (34) is fixedly connected to a sliding rod (32). The outer wall of the sliding rod (32) is slidably connected to the second base (30). A third spring (33) is arranged outside the sliding rod (32). The upper end of the third spring (33) is fixedly connected to the slide plate (34). The lower end of the third spring (33) is fixedly connected to the second base (30). The sliding rod (32) extends to the lower end of the second base (30) and is fixedly connected to a semicircular clamping block (31).

8. The portable fire-fighting pipeline air tightness detection device according to claim 1 is characterized in that: A rotating column (37) is rotatably mounted at the corner of the bottom end of the detection box (11) and the mounting seat (23); the lower end of the rotating column (37) is fixedly connected to a wheel cover (38); and the inside of the wheel cover (38) is rotatably connected to a roller (39).

9. The portable fire-fighting pipeline air tightness detection device according to claim 8, characterized in that: An electric push rod (40) is installed at the upper end of the wheel cover (38), and the telescopic end of the electric push rod (40) extends to the inside of the wheel cover (38) and is fixedly connected to a fixed block (41). A rubber pad is installed at the bottom end of the fixed block (41), and an anti-slip pattern is arranged at the bottom end of the rubber pad.

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