Fire-fighting pipeline air tightness detection device

Abstract

The utility model belongs to the technical field of safety detection of fire-fighting equipment, and particularly relates to a fire-fighting pipeline airtightness detection device which comprises a detection table, a detection box is installed on the upper surface of the detection table, and a pressurization connecting pipe is installed on the right side wall of the detection box. Through the arrangement of a sliding rod, a sliding sleeve, a connecting rod and the like, the fire-fighting pipeline is fixed through contraction or expansion of a plurality of extrusion plates, the extrusion plates are attached to the inner wall of a port of the fire-fighting pipeline, and then the fire-fighting pipeline is pulled through a hydraulic cylinder to be attached to a pressurization connecting pipe; according to the device, the fire-fighting pipeline and the pressurization connecting pipe are connected in an attached mode through internal fixation, and the problem that in a traditional device, when a conical rubber sealing block is used for fixation, the sealing gasket is used for enabling the connection position of the pressurization connecting pipe and the fire-fighting pipeline to be in a sealed state is solved; and the larger part of the fire-fighting pipeline is positioned in the pressurizing connecting pipe, so that the air tightness of one part of the fire-fighting pipeline cannot be detected.

Description

Technical Field

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

[0002] In urban construction, fire protection measures are an indispensable part of the equipment. The application of fire protection pipes in fire protection systems is a very important component. The fire protection pipes are mainly used to connect fire protection equipment and instruments, and transport fire extinguishing water, gas or other media. Due to special needs, the thickness and material of the fire protection pipes have special requirements, and red paint is sprayed to distinguish them from other pipes to transport fire protection water. After the fire protection pipes are installed and put into use, they need to be tested for air tightness. The main purpose is to check the pressure resistance and tightness of the pipes to ensure that the fire protection system does not rupture or leak under normal working conditions.

[0003] For example, a Chinese patent with publication number CN218031904U discloses a fire-fighting pipe air-tightness detection and sealing device, including a horizontally arranged detection platform, a detection box installed on the detection platform, a pressurized pipe installed on one side of the detection box, and a conical rubber sealing block coaxially arranged on the outer end of the pressurized pipe; the beneficial effects of the utility model: by installing the conical rubber sealing block at the pressurized pipe port, the fire-fighting pipe can be quickly sealed and installed, saving time and effort; at the same time, it also avoids the deformation influence of the flange rigid connection on the detection pipe, ensures the accuracy of the detection result, and eliminates the safety hazard of the use of the fire-fighting pipe.

[0004] This patent has some shortcomings when in use, such as: in this patent, the fire-fighting pipe is placed in a conical rubber sealing block, and then the conical rubber sealing block is squeezed with the crimping tube so that the conical rubber sealing block can fit tightly against the outer wall of the fire-fighting pipe. During this fixing process, one end of the fire-fighting pipe needs to be inserted into the crimping tube, so that during the detection process, the part of the fire-fighting pipe wrapped by the conical rubber sealing block and the part located in the crimping tube cannot be tested for air tightness. In addition, the height of the overall device of the test bench is controlled by adjusting the latch in the device, but during the adjustment process, a corresponding supporting force is required to support it, which makes the entire adjustment process more cumbersome and laborious. In view of this, we propose a fire-fighting pipe air tightness detection device. Summary of the invention

[0005] The utility model aims to provide a fire protection pipeline air tightness detection device to solve the problems raised in the above background technology.

[0006] In view of this, the utility model provides a fire protection pipeline air tightness detection device, comprising:

[0007] The detection table has an detection box installed on the upper surface of the detection table, and a pressure pipe is installed on the right wall of the detection box, and a sliding rod is arranged at the right opening of the pressure pipe, and two sliding sleeves are slidably sleeved on the sliding rod, wherein the sliding sleeve on the right side is fixed to the right end of the sliding rod, and four cross plates equidistantly distributed in a circle are arranged on the circumference of the two sliding sleeves, and a rotating block 1 is fixed on the surface of the side of the cross plate away from the sliding rod, and a connecting block is rotatably connected to the rotating block 1, and an extrusion plate is fixed to one end of the connecting block, and a connecting rod is symmetrically arranged on the surface of the side of the cross plate close to the sliding rod, and both ends of the connecting rod are rotatably connected with rotating blocks 2, one of which is fixed to the cross plate, and the other is fixed to the sliding sleeve on the corresponding side;

[0008] A driving assembly, which is located in the inner cavity of the pressure pipe and the slide rod and is used to drive the left sliding sleeve to slide laterally on the circumferential wall of the slide rod;

[0009] Four supporting legs, the four supporting legs are respectively fixedly mounted on the lower surface of the testing platform near four corners;

[0010] A telescopic leg assembly, which is located directly below the testing platform and is used to provide auxiliary support for the testing platform;

[0011] The support frame is fixedly mounted on the upper surface of the testing platform, and the support frame is located at the right side of the pressure pipe.

[0012] In the present technical scheme, by setting a sliding rod, a sliding sleeve, a cross plate, an extrusion plate and a connecting rod, etc., a driving assembly is used to push the sliding sleeve that slides with the sliding rod to move on the sliding rod, so that multiple extrusion plates can shrink or expand, so as to fix the fire-fighting pipe. Multiple extrusion plates are only attached to the inner wall at the port of the fire-fighting pipe, and then the fire-fighting pipe and the pressurized pipe are attached through the action of the hydraulic cylinder. The connection between the pressurized pipe and the fire-fighting pipe is sealed by a sealing gasket, so as to ensure the accuracy and stability when the air-tightness test of the fire-fighting pipe is performed. The present device fits and connects the fire-fighting pipe and the pressurized pipe through internal fixation, so as to solve the problem that when the conical rubber sealing block is used for fixation in the traditional device, a large part of the fire-fighting pipe is in the pressurized pipe, so that a part of the fire-fighting pipe cannot be tested for air-tightness.

[0013] In the above technical solution, further, a sealing gasket is fixed on the right side wall of the pressure connecting pipe and located around the opening, and the sealing gasket is made of soft rubber.

[0014] In the technical solution, a sealing gasket is provided to avoid air pressure leakage at the connection when the pressurized pipe is connected to the fire-fighting pipe.

[0015] In the above technical solution, further, the driving component includes:

[0016] A hydraulic cylinder, wherein the hydraulic cylinder is located in the inner cavity of the pressure-adding pipe, the base of the hydraulic cylinder is provided with a support plate fixed to the inner wall of the pressure-adding pipe, the hydraulic cylinder is fixed to the support plate, the telescopic rod end of the hydraulic cylinder is fixed with a shell, a motor 1 is installed in the shell, and the left end of the sliding rod is fixed to the outer wall of the motor 1.

[0017] In the above technical solution, further, the driving component also includes:

[0018] A cross-shaped groove is provided in the slide rod, a ball screw is rotatably connected in the cross-shaped groove, a nut seat is threadedly connected to the ball screw and is slidably connected to the cross-shaped groove, the nut seat is fixed to the circumferential inner wall of the sliding sleeve on the left side, and the output shaft of the motor 1 passes through the inner cavity side wall of the shell and extends into the cross-shaped groove and is coaxially connected to the ball screw.

[0019] In the present technical solution, a driving assembly is provided so that the fire-fighting pipe can be fixed and fitted to the pressure-increasing pipe.

[0020] In the above technical solution, further, four stabilizing plates equidistantly distributed in a circumference are fixed to the side wall of the shell, and the stabilizing plates are slidably matched with the circumferential inner wall of the pressure connecting pipe.

[0021] In this technical solution, the structural stability of the device is ensured by providing a plurality of stabilizing plates.

[0022] In the above technical solution, further, the telescopic leg assembly includes:

[0023] A vertical groove, wherein the vertical groove is formed on the lower surface of the detection platform, and two symmetrically arranged horizontal grooves are formed on the lower surface of the detection platform and are located on the peripheral side of the vertical groove, and the vertical grooves are vertically distributed to the horizontal grooves, and a second motor is installed at the center position of the vertical groove, and the two output shaft ends of the second motor are coaxially connected to a worm, and the peripheral side of the worm is meshedly connected to a worm wheel, and a connecting shaft is fixed at the axis center of the worm wheel, and one end of the connecting shaft passes through the vertical groove and extends into the horizontal groove, and one end of the connecting shaft located in the horizontal groove is coaxially connected to a rotating shaft, and the rotating shaft The two ends of the shaft are rotatably connected with a bidirectional threaded rod fixed to the top surface of the transverse groove, and the two opposite threads of the rotating shaft are symmetrically threaded with threaded blocks, and the threaded blocks are slidably matched with the corresponding transverse grooves, and the threaded blocks are rotatably connected with a pull rod, and symmetrically arranged rotating blocks three are fixed in the transverse groove and at both ends of the rotating shaft, and the rotating block three is rotatably connected with a support column, and the inner side wall of the support column is provided with a protrusion, and the other end of the pull rod is rotatably connected to the protrusion on the inner side wall of the support column, and the bottom end of the support column is fixed with a self-locking universal wheel.

[0024] The beneficial effects of the utility model are:

[0025] 1. The fire-fighting pipe air-tightness detection device, by arranging a sliding rod, a sliding sleeve, a cross plate, an extrusion plate and a connecting rod, etc., uses a driving component to push the sliding sleeve that slidably cooperates with the sliding rod to move on the sliding rod, so that multiple extrusion plates can shrink or expand to fix the fire-fighting pipe. Multiple extrusion plates are attached to the inner wall of the fire-fighting pipe port, and then the fire-fighting pipe and the pressurized pipe are attached by the action of the hydraulic cylinder. The connection between the pressurized pipe and the fire-fighting pipe is sealed by a sealing gasket, so as to ensure the accuracy and stability when the fire-fighting pipe is tested for air-tightness. The device fits and connects the fire-fighting pipe and the pressurized pipe by internal fixation, which solves the problem that when a conical rubber sealing block is used for fixation in a traditional device, a large part of the fire-fighting pipe is in the pressurized pipe, so that a part of the fire-fighting pipe cannot be tested for air-tightness.

[0026] 2. The fire-fighting pipe air tightness detection device is provided with a telescopic leg assembly, driven by motor 2, and transmitted through a worm, a worm wheel, a connecting shaft, etc., so that the rotating shaft can rotate freely in the transverse groove, and the state of the support column is changed by pulling or pushing the pull rod through the two threaded blocks in the transverse groove, thereby realizing the retraction and extension of the support column and the self-locking universal wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a cross-sectional schematic diagram of the pressurized pipe in the utility model;

[0029] Figure 3 It is a cross-sectional schematic diagram of the slide bar in the utility model;

[0030] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0031] Figure 5 It is a partial structural schematic diagram of the fixing mechanism in the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the telescopic leg assembly in the utility model (in a top view);

[0033] Figure 7 It is a partial structural schematic diagram of the telescopic leg assembly in the utility model.

[0034] The symbols in the figure are:

[0035] 1. Test bench; 2. Test box; 3. Pressurized pipe; 4. Sealing gasket; 5. Hydraulic cylinder; 6. Housing; 7. Motor 1; 8. Slide rod; 9. Cross groove; 10. Ball screw; 11. Nut seat; 12. Slide sleeve; 13. Cross plate; 14. Rotating block 1; 15. Connecting block; 16. Extrusion plate; 17. Connecting rod; 18. Rotating block 2; 19. Stabilizing plate; 20. Vertical groove; 21. Horizontal groove; 22. Motor 2; 23. Worm; 24. Worm wheel; 25. Connecting shaft; 26. Rotating shaft; 27. Bidirectional threaded rod; 28. Threaded block; 29. ​​Pull rod; 30. Rotating block 3; 31. Support column; 32. Self-locking universal wheel; 33. Support leg; 34. Support frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0037] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0039] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0040] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or still includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples. Example

[0041] See also Figure 1 - Figure 7 As shown, this embodiment provides a fire protection pipeline air tightness detection device, including:

[0042] An inspection table 1, with an inspection box 2 installed on the upper surface of the inspection table 1, a pressurizing pipe 3 installed on the right side wall of the inspection box 2, a slide bar 8 is arranged at the right opening of the pressurizing pipe 3, two sliding sleeves 12 are slidably sleeved on the slide bar 8, wherein the sliding sleeve 12 located on the right side is fixed to the right end of the slide bar 8, four horizontal plates 13 equidistantly distributed in a circle are arranged on the circumference of the two sliding sleeves 12, a rotating block 14 is fixed on the surface of the horizontal plate 13 on the side away from the slide bar 8, a connecting block 15 is rotatably connected to the rotating block 14, an extrusion plate 16 is fixed to one end of the connecting block 15, a connecting rod 17 is symmetrically arranged on the surface of the side of the horizontal plate 13 close to the slide bar 8, both ends of the connecting rod 17 are rotatably connected to rotating blocks 2 18, one of the rotating blocks 2 18 is fixed to the horizontal plate 13, and the other rotating block 2 18 is fixed to the sliding sleeve 12 on the corresponding side;

[0043] A driving assembly, which is located in the inner cavity of the pressure pipe 3 and the slide rod 8 and is used to drive the left sliding sleeve 12 to slide laterally on the circumferential wall of the slide rod 8;

[0044] Four supporting legs 33, the four supporting legs 33 are respectively fixedly mounted on the lower surface of the testing platform 1 near four corners;

[0045] A telescopic leg assembly, which is located directly below the testing platform 1 and is used to provide auxiliary support for the testing platform 1;

[0046] The support frame 34 is fixedly mounted on the upper surface of the testing platform 1 , and the support frame 34 is located at the right side of the pressurizing pipe 3 .

[0047] Among them, when testing the fire-fighting pipe, one end of the fire-fighting pipe is placed near the position of the pressure pipe 3, and the pipe body of the fire-fighting pipe is placed on the support frame 34. At this time, the four extrusion plates 16 are located in the inner cavity of the fire-fighting pipe near the port, and the drive assembly is started. The drive assembly works and pushes the sliding sleeve 12 on the left side to move to the right. At this time, the connecting rod 17 on the sliding sleeve 12 on the left side gradually increases the inclination angle as the sliding sleeve 12 continues to move, and cooperates with the connecting rod 17 on the other side to push the cross plate 13 outward, and the rotating block 14, the connecting block 15 and the extrusion plate 16 on the cross plate 13 are located. The plate 16 is displaced accordingly until the outer wall of the extrusion plate 16 is tightly fitted against the circumferential inner wall of the fire-fighting pipe, and then the telescopic rod of the hydraulic cylinder 5 in the driving assembly contracts and drives the port of the fire-fighting pipe toward the pressurized pipe 3 until it is completely fitted with the pressurized pipe 3. In the process of the fire-fighting pipe approaching the pressurized pipe 3, the side wall of the fire-fighting pipe port will contact and squeeze the sealing gasket 4. By providing the sealing gasket 4, air pressure leakage at the connection when the pressurized pipe 3 is connected to the fire-fighting pipe is avoided. Then the detection box 2 is started, and the air tightness detection of the fire-fighting pipe is performed through the detection box 2.

[0048] By setting a slide bar 8, a sleeve 12, a cross plate 13, an extrusion plate 16 and a connecting rod 17, etc., the driving component is used to push the sleeve 12 that slides with the slide bar 8 to move on the slide bar 8, so that multiple extrusion plates 16 can shrink or expand to fix the fire pipe. Multiple extrusion plates 16 are fitted to the inner wall of the fire pipe port, and then the fire pipe is fitted with the pressure pipe 3 through the action of the hydraulic cylinder 5. The sealing gasket 4 is used to make the connection between the pressure pipe 3 and the fire pipe in a sealed state, thereby ensuring the accuracy and stability when the fire pipe is tested for air tightness. The device fits the fire pipe and the pressure pipe 3 through internal fixation, which solves the problem that when a conical rubber sealing block is used for fixation in the traditional device, a larger part of the fire pipe is in the pressure pipe 3, so that a part of the fire pipe cannot be tested for air tightness. Example

[0049] This embodiment provides a fire protection pipe air tightness detection device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a sealing gasket 4 is fixed on the right side wall of the pressure pipe 3 and located around the opening, and the sealing gasket 4 is made of soft rubber.

[0050] In the process of the fire-fighting pipe approaching the pressure-increasing pipe 3 , the side wall of the fire-fighting pipe port will contact the sealing gasket 4 and squeeze the sealing gasket 4 .

[0051] By providing the sealing gasket 4, it is avoided that when the pressurized pipe 3 is connected to the fire-fighting pipe, air pressure leakage occurs at the connection. Example

[0052] This embodiment provides a fire protection pipeline air tightness detection device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the driving component includes:

[0053] Hydraulic cylinder 5, hydraulic cylinder 5 is located in the inner cavity of the pressure pipe 3, the base of the hydraulic cylinder 5 is provided with a support plate fixed to the inner wall of the pressure pipe 3, the hydraulic cylinder 5 is fixed to the support plate, the telescopic rod end of the hydraulic cylinder 5 is fixed with a shell 6, a motor 7 is installed in the shell 6, and the left end of the slide rod 8 is fixed to the outer wall of the motor 7.

[0054] A cross-shaped groove 9 is provided in the slide bar 8, a ball screw 10 is rotatably connected in the cross-shaped groove 9, a nut seat 11 is threadedly connected to the ball screw 10 and is slidably connected to the cross-shaped groove 9, the nut seat 11 is fixed to the circumferential inner wall of the sliding sleeve 12 on the left side, and the output shaft of the motor 7 passes through the inner cavity side wall of the housing 6 and extends to the cross-shaped groove 9 and is coaxially connected to the ball screw 10

[0055] When the driving assembly is working, the motor 7 is started, the output shaft of the motor 7 rotates and drives the ball screw 10 to rotate. Under the action of the thread force, the nut seat 11 can slide freely along the cross groove 9. When the nut seat 11 slides in the cross groove 9, it can drive the sliding sleeve 12 to move synchronously, so that the sliding sleeve 12 can slide freely on the sliding rod 8.

[0056] After the fire-fighting pipe is fixed, when it is necessary to fit the fire-fighting pipe with the pressurized pipe 3, the hydraulic cylinder 5 is started, and the telescopic rod of the hydraulic cylinder 5 contracts, driving the outer shell 6, the slide bar 8 and the port of the fire-fighting pipe on the slide bar 8 to move toward the pressurized pipe 3 until they are completely fitted with the pressurized pipe 3.

[0057] By providing the driving assembly, the fire-fighting pipe can be fixed and fitted with the pressure pipe 3 . Example

[0058] This embodiment provides a fire protection pipe air tightness detection device, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: four stabilizing plates 19 equidistantly distributed around the circumference are fixed to the side wall of the outer shell 6, and the stabilizing plates 19 are slidably matched with the circumferential inner wall of the pressurized pipe 3.

[0059] Among them, a protrusion is provided on the stabilizing plate 19, and a displacement groove that can accommodate the sliding of the protrusion is opened on the circumferential inner wall of the pressurizing pipe 3. When the hydraulic cylinder 5 drives the outer shell 6 to displace, the outer shell 6 can rely on multiple stabilizing plates 19 to slide stably in the inner cavity of the pressurizing pipe 3.

[0060] By providing a plurality of stabilizing plates 19, the structural stability of the device is ensured. Example

[0061] This embodiment provides a fire protection pipeline air tightness detection device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the telescopic leg assembly includes:

[0062] A vertical groove 20 is provided on the lower surface of the test platform 1. Two symmetrically arranged transverse grooves 21 are provided on the lower surface of the test platform 1 and are located on the peripheral side of the vertical groove 20. The vertical groove 20 and the transverse groove 21 are vertically distributed. A motor 22 is installed at the center position of the vertical groove 20. The two output shaft ends of the motor 22 are coaxially connected with a worm 23. The peripheral side of the worm 23 is meshed with a worm wheel 24. A connecting shaft 25 is fixed at the axis of the worm wheel 24. One end of the connecting shaft 25 passes through the vertical groove 20 and extends into the transverse groove 21. One end of the connecting shaft 25 located in the transverse groove 21 is coaxially connected with a rotating shaft 26. The two ends of the shaft 26 are rotatably connected with a bidirectional threaded rod 27 fixed to the inner top surface of the transverse groove 21, and the two opposite threads of the rotating shaft 26 are symmetrically threaded with threaded blocks 28, and the threaded blocks 28 are slidably matched with the corresponding transverse grooves 21, and the threaded blocks 28 are rotatably connected with a pull rod 29, and a symmetrically arranged rotating block three 30 is fixed in the transverse groove 21 and at both ends of the rotating shaft 26, and a support column 31 is rotatably connected to the rotating block three 30, and the inner side wall of the support column 31 is provided with a protrusion, and the other end of the pull rod 29 is rotatably connected to the protrusion on the inner side wall of the support column 31, and a self-locking universal wheel 32 is fixed to the bottom end of the support column 31.

[0063] Among them, when it is necessary to move and adjust the height of the device, the telescopic leg assembly can be started, and the motor 22 works at this time. The two output shafts of the motor 22 rotate and drive the worm 23 to rotate. The worm 23 drives the worm wheel 24 to rotate, and the worm wheel 24 drives the corresponding rotating shaft 26 to rotate through the connecting shaft 25. Under the action of the thread force, the two bidirectional threaded rods 27 in the same transverse groove 21 can be displaced inward or outward at the same time along the transverse groove 21. If it is necessary to retract the support column 31, the thread block 28 is displaced inward. At this time, the thread block 28 pulls the support column 31 inward by pulling the corresponding pull rod 29. At this time, the self-locking universal wheel 32 is gradually separated from the ground, and the support leg 33 is gradually in contact with the ground until the self-locking universal wheel 32 is completely separated from the ground. When the support column 31 needs to be extended, the principle is the same as mentioned above, and this application will not be repeated here. It is worth adding that the motor 22 is a dual-axis motor, which is an existing public technology. Those skilled in the art should be familiar with it, and this application will not be repeated here.

[0064] By setting up a telescopic leg assembly, driving it with a motor 22, and transmitting it through a worm 23, a worm wheel 24, and a connecting shaft 25, the rotating shaft 26 can rotate freely in the transverse groove 21, and the two threaded blocks 28 are displaced in the transverse groove 21, and the pull rod 29 is pulled or pushed to change the state of the support column 31, thereby realizing the retraction and extension of the support column 31 and the self-locking universal wheel 32.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A fire protection pipeline air tightness detection device, characterized in that: include: A test bench (1), wherein a test box (2) is installed on the upper surface of the test bench (1), a pressurized pipe (3) is installed on the right side wall of the test box (2), a slide bar (8) is arranged at the right opening of the pressurized pipe (3), two slide sleeves (12) are slidably sleeved on the slide bar (8), wherein the slide sleeve (12) located on the right side is fixed to the right side end of the slide bar (8), and four horizontal plates (13) are arranged on the circumferential side of the two slide sleeves (12) and are equidistantly distributed around the circumference, and the horizontal plates (13) are away from the slide bar (8) ) is fixed to a side surface of the horizontal plate (13), a connecting block (15) is rotatably connected to the rotating block (14), an extrusion plate (16) is fixed to one end of the connecting block (15), a connecting rod (17) is symmetrically arranged on a side surface of the horizontal plate (13) close to the sliding rod (8), both ends of the connecting rod (17) are rotatably connected to rotating blocks (18), one of the rotating blocks (18) is fixed to the horizontal plate (13), and the other rotating block (18) is fixed to the sliding sleeve (12) on the corresponding side; A drive assembly, the drive assembly being located in the inner cavity of the pressure pipe (3) and the slide rod (8) and being used to drive the left slide sleeve (12) to slide laterally on the circumferential wall of the slide rod (8); Four supporting legs (33), the four supporting legs (33) being respectively fixedly mounted on the lower surface of the detection platform (1) near four corners; A telescopic leg assembly, the telescopic leg assembly being located directly below the detection platform (1) and being used to provide auxiliary support for the detection platform (1); A support frame (34), wherein the support frame (34) is fixedly mounted on the upper surface of the detection platform (1), and the support frame (34) is located at the right side of the pressure pipe (3).

2. A fire protection pipeline air tightness detection device according to claim 1, characterized in that: A sealing gasket (4) is fixed on the right side wall of the pressure pipe (3) and located around the opening; the sealing gasket (4) is made of soft rubber.

3. A fire protection pipeline air tightness detection device according to claim 1, characterized in that: The drive assembly comprises: A hydraulic cylinder (5), the hydraulic cylinder (5) is located in the inner cavity of the pressure pipe (3), the base of the hydraulic cylinder (5) is provided with a support plate fixed to the inner wall of the pressure pipe (3), the hydraulic cylinder (5) is fixed to the support plate, the telescopic rod end of the hydraulic cylinder (5) is fixed with a shell (6), a motor (7) is installed in the shell (6), and the left end of the sliding rod (8) is fixed to the outer wall of the motor (7).

4. A fire protection pipeline air tightness detection device according to claim 3, characterized in that: The drive assembly also includes: A cross-shaped groove (9), wherein the cross-shaped groove (9) is formed in the slide rod (8), a ball screw (10) is rotatably connected in the cross-shaped groove (9), a nut seat (11) is threadedly connected to the ball screw (10) and is slidably connected to the cross-shaped groove (9), the nut seat (11) is fixed to the circumferential inner wall of the sliding sleeve (12) on the left side, and the output shaft of the motor 1 (7) passes through the inner cavity side wall of the housing (6) and extends into the cross-shaped groove (9) and is coaxially connected to the ball screw (10).

5. A fire protection pipeline air tightness detection device according to claim 4, characterized in that: Four stabilizing plates (19) equidistantly distributed around a circle are fixed to the side wall of the housing (6); the stabilizing plates (19) are slidably fitted with the circumferential inner wall of the pressure pipe (3).

6. A fire protection pipeline air tightness detection device according to claim 1, characterized in that: The telescopic leg assembly comprises: A vertical groove (20), wherein the vertical groove (20) is formed on the lower surface of the detection platform (1), and two symmetrically arranged transverse grooves (21) are formed on the lower surface of the detection platform (1) and are located on the circumference of the vertical groove (20), wherein the vertical groove (20) and the transverse groove (21) are vertically distributed, and a second motor (22) is installed at the center position in the vertical groove (20), and the two output shaft ends of the second motor (22) are coaxially connected to a worm (23), and the circumference of the worm (23) is meshingly connected to a worm wheel (24), and a connecting shaft (25) is fixed at the axis of the worm wheel (24), and one end of the connecting shaft (25) passes through the vertical groove (20) and extends into the transverse groove (21), and one end of the connecting shaft (25) located in the transverse groove (21) is coaxially connected to a rotating shaft (26) ), the two ends of the rotating shaft (26) are rotatably connected with a bidirectional threaded rod (27) fixed to the inner top surface of the transverse groove (21), the two opposite threads of the rotating shaft (26) are symmetrically threaded with threaded blocks (28), and the threaded blocks (28) are slidably matched with the corresponding transverse groove (21), and the threaded blocks (28) are rotatably connected with a pull rod (29), and a symmetrically arranged rotating block three (30) is fixed in the transverse groove (21) and located at both ends of the rotating shaft (26), and the rotating block three (30) is rotatably connected with a support column (31), the inner side wall of the support column (31) is provided with a protrusion, the other end of the pull rod (29) is rotatably connected to the protrusion on the inner side wall of the support column (31), and the bottom end of the support column (31) is fixed with a self-locking universal wheel (32).

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