A device for pre-embedded pipeline in fire engineering construction

Abstract

The utility model belongs to fire engineering construction technical field especially is a kind of device of fire engineering construction with embedded pipeline, it include: rigid support base plate;Support seat;Adjustable clamping assembly;Sealing assembly is used to block pipeline port;Inclination adjusting assembly;Angle positioning assembly;Sealing assembly is sealed to pipeline port, uses locking assembly fixed, prevents the problem of sealing assembly falling off and slurry entering pipeline in pouring process, reduces construction cost, eliminates the hidden danger of blockage;Through the cooperation of inclination adjusting assembly and angle positioning assembly, the slope adjustment of 0.001 ° level can be realized, the specification requirement of fire pipeline is satisfied, without gasket, adjustment process saves time and labour, stability is strong, there is no angular deviation in pouring process;Adjustable clamping assembly cooperates with protective compression assembly and rubber lining, realizes the stable clamping of pipeline, avoids pipe wall abrasion through elastic protection structure, simultaneously adapts to different specifications of pipeline, and universality is strong.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection engineering construction technology, and specifically relates to a device for pre-embedded pipes used in fire protection engineering construction. Background Technology

[0002] In fire protection engineering, pipe pre-embedding is a key process. The pipes must be fixed in the designed position before concrete pouring to ensure that the position and slope of the pipes meet the specifications after pouring.

[0003] Traditional pipe pre-embedding devices have many shortcomings: for example, during the pre-embedding process, the bottom of the pit where the pipe is placed is often uneven, and there may even be protruding hard rocks. If the pipe is directly buried in it, the pipe wall is easily worn and squeezed, which can lead to pipe damage and affect normal use.

[0004] There are some existing solutions that attempt to address these problems. For example, Chinese utility model patent CN217328802U discloses "a pipe pre-embedded device for fire protection engineering construction", which adopts a combination design of a first lower clamping block, a second lower clamping block and an upper clamping block. The pipe is protected by an elastic bandage to prevent its sidewall from directly contacting the protruding rocks in the tunnel.

[0005] However, existing technologies still have significant shortcomings: 1. Insufficient sealing and protection: temporary plugs are often used to seal both ends of the pipes. These plugs are prone to falling off due to vibration during pouring, causing concrete slurry to enter the pipe. This makes subsequent cleaning difficult and can easily leave behind potential blockages. 2. Inconvenient angle adjustment: fire protection pipes need to meet specific drainage slopes (e.g., the slope of the main pipe in a wet system should not be less than 0.002°, and the slope of the distribution pipe and branch pipe should not be less than 0.005°). Existing devices do not have a dedicated angle adjustment mechanism and require adjustment by using shims and plugs, which makes it difficult to control the accuracy and results in poor stability.

[0006] To address the aforementioned problems, this utility model proposes a device for pre-embedded pipes used in fire protection engineering construction. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a device for pre-embedded pipes in fire protection engineering construction, which features convenient use, good sealing effect, and easy adjustment, thereby solving the technical problems of poor sealing effect and inconvenient angle adjustment in traditional pipe pre-embedded devices.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a device for pre-embedded pipes used in fire protection engineering construction, comprising:

[0009] A rigid support base plate, which is used to be fixedly connected to the bottom of the construction tunnel or the foundation structure;

[0010] A support base is hinged above the rigid support base plate, and an arc-shaped support plate for supporting the pipe is fixed at the top of the support base.

[0011] An adjustable clamping assembly, which cooperates with the arc-shaped support plate to form an adjustable clamping and fixing structure for the pipe;

[0012] A sealing assembly, which is detachably assembled to one end of the support using a locking component, is used to seal the pipe port. It includes a sealing plate and a frustum-shaped rubber sealing plug fixed to the sealing plate.

[0013] A tilt adjustment component is disposed between the rigid support base and the support seat, and is used to adjust the tilt angle of the support seat;

[0014] An angle positioning component is used to indicate the tilt angle of the support base, and includes a standard scale mark on the support base and a positioning indicator pin fixed on the rigid support base.

[0015] As a preferred embodiment of this utility model, the adjustable clamping assembly includes a U-shaped positioning seat, an n-shaped stirrup, and a locking nut;

[0016] At least two sets of the U-shaped positioning seats are fixed at intervals to the outer wall of the support seat, and two U-shaped positioning seats in the same set are symmetrically distributed.

[0017] The n-shaped stirrup has external threads on its two vertical parts and passes through the two U-shaped positioning seats in the same group;

[0018] The locking nut is provided at the protruding end of the n-shaped stirrup by means of thread engagement.

[0019] As a preferred technical solution of this utility model, the locking assembly includes a horizontal rib, a connecting hook, and a wing nut;

[0020] The transverse rib is fixed inside the support base;

[0021] The hook part of the connecting hook is attached to the horizontal rib, the connecting hook is provided with external threads, and a waist-shaped hole is provided on the sealing plate for the connecting hook to pass through.

[0022] The wing nut is attached to the protruding end of the connecting hook by means of thread engagement.

[0023] As a preferred embodiment of this utility model, the outer wall of the sealing plate is fixed with reinforcing ridges.

[0024] As a preferred technical solution of this utility model, the tilt adjustment component includes a movable seat, a flip support arm, a fixed plate, a threaded screw, and a hand crank.

[0025] The movable seat is attached to the top surface of the rigid support base plate;

[0026] The bottom end of the flipping support arm is hinged to the movable seat, and the top end is hinged to the support seat.

[0027] The two fixing plates are symmetrically fixed to the top surface of the rigid support base plate;

[0028] The threaded screw is rotatably positioned between the two fixed plates and threadedly engages with the movable seat.

[0029] The hand crank is fixed to one end of the threaded screw and is used to control the rotation of the threaded screw.

[0030] As a preferred embodiment of this utility model, the tilt adjustment assembly further includes a guide rod;

[0031] The two guide rods are symmetrically fixed between the two fixed plates and pass through the movable seat.

[0032] As a preferred technical solution of this utility model, it also includes a protective clamping component, and the protective clamping component includes an arc-shaped pressure plate and a positioning protrusion.

[0033] The arc-shaped pressure plate is located inside the n-shaped stirrup and is used to clamp the pipe in conjunction with the arc-shaped support plate. Two limiting rings are fixed on the n-shaped stirrup to limit the lateral displacement of the arc-shaped pressure plate.

[0034] The positioning protrusion is fixed to the outer wall of the arc-shaped pressure plate, and a positioning groove adapted to the n-shaped stirrup is provided on the positioning protrusion.

[0035] As a preferred technical solution of this utility model, it also includes a rubber liner;

[0036] Rubber liners are bonded and fixed to the inner walls of both the arc-shaped support plate and the arc-shaped pressure plate, and anti-slip ridges are evenly distributed on the inner walls of the rubber liners.

[0037] Compared with the prior art, the beneficial effects of this utility model are:

[0038] 1. The pipe ports are sealed with sealing components and fixed with locking components to prevent the sealing components from falling off during the pouring process and the grout from entering the pipe. There is no need to clean the inside of the pipe later, which reduces construction costs and eliminates the risk of blockage.

[0039] 2. By combining the tilt adjustment component and the angle positioning component, a slope adjustment of 0.001° can be achieved, which meets the specifications of fire protection pipelines. No gaskets or shims are required, the adjustment process is time-saving and labor-saving, the stability is strong, and there is no angle deviation during the pouring process.

[0040] 3. The adjustable clamping assembly, together with the protective clamping assembly and rubber liner, not only achieves stable clamping of the pipeline, but also avoids pipe wall wear through the elastic protective structure. At the same time, it is adaptable to pipelines of different specifications and has strong versatility.

[0041] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0043] Figure 1 This is a schematic diagram of the structure of this utility model;

[0044] Figure 2 This utility model Figure 1 A magnified schematic diagram of the adjustable clamping component in the middle;

[0045] Figure 3 This utility model Figure 1 A magnified schematic diagram of the locking assembly in the middle;

[0046] Figure 4 This utility model Figure 1 A magnified schematic diagram of the tilt adjustment component in the diagram;

[0047] Figure 5 This utility model Figure 1 A magnified schematic diagram of the angle positioning component in the diagram;

[0048] Figure 6 This utility model Figure 1 A magnified structural diagram of the protective clamping component.

[0049] In the diagram: 1. Rigid support base; 2. Support seat; 3. Arc-shaped support plate; 4. Adjustable clamping assembly; 41. U-shaped positioning seat; 42. N-shaped stirrup; 421. Limiting ring; 43. Locking nut; 5. Sealing assembly; 51. Sealing plate; 511. Reinforcing ridge; 512. Waist-shaped hole; 52. Rubber sealing plug; 6. Locking assembly; 61. Horizontal rib; 62. Connecting hook; 63. Wing nut; 7. Tilt adjustment assembly; 71. Moving seat; 72. Flip support arm; 73. Fixing plate; 74. Threaded screw; 75. Hand crank; 76. Guide rod; 8. Angle positioning assembly; 81. Standard scale mark; 82. Positioning indicator; 9. Protective clamping assembly; 91. Arc-shaped pressure plate; 92. Positioning ridge; 921. Positioning groove; 10. Rubber liner; 101. Anti-slip ridge. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] Please see Figures 1-6 The present invention provides the following technical solution: a device for pre-embedded pipes for fire protection engineering construction, comprising: a rigid support base plate 1, a support seat 2, an adjustable clamping assembly 4, a sealing assembly 5, an tilt adjustment assembly 7, and an angle positioning assembly 8.

[0052] Furthermore, by Figure 1 and Figure 5As shown, in this embodiment, the rigid support base plate 1 is used for fixed connection with the bottom of the construction pit or the foundation structure; the support seat 2 is hinged above the rigid support base plate 1, and the top of the support seat 2 is fixed with an arc-shaped support plate 3 for supporting the pipe; the adjustable clamping assembly 4 cooperates with the arc-shaped support plate 3 to form an adjustable clamping and fixing structure for the pipe; the sealing assembly 5 is detachably assembled to one end of the support seat 2 using the locking assembly 6, and is used to seal the pipe port, which includes a sealing plate 51 and a frustum-shaped rubber sealing plug 52 fixed on the sealing plate 51; the tilt adjustment assembly 7 is provided between the rigid support base plate 1 and the support seat 2. Between the seats 2, the tilt angle of the support seat 2 is adjusted; the angle positioning component 8 is used to indicate the tilt angle of the support seat 2, which includes a standard scale mark 81 on the support seat 2 and a positioning indicator pin 82 fixed on the rigid support base plate 1. After adopting the above scheme, before construction, the rigid support base plate 1 is first fastened to the bottom of the construction pit, the building foundation structure and other fixed surfaces by expansion bolts or embedded parts to ensure that there is no loose gap between the rigid support base plate 1 and the fixed surface, so as to provide a stable support foundation for the entire device and avoid the overall displacement of the device during subsequent pipeline installation and adjustment.

[0053] After the foundation is fixed, since the support base 2 is hinged above the rigid support base plate 1, in the initial state, the fire pipe to be embedded can be placed on the arc-shaped support plate 3 at the top of the support base 2 by manual labor or auxiliary equipment. The inner arc surface of the arc-shaped support plate 3 is adapted to the outer wall of the pipe, which can increase the support contact area, avoid excessive local stress on the pipe and cause deformation, and at the same time achieve the initial positioning of the pipe and prevent the pipe from rolling randomly in the horizontal direction.

[0054] After the pipe is placed in place, the adjustable clamping component 4 and the arc-shaped support plate 3 work together to clamp and fix the pipe. The clamping distance can be flexibly adjusted according to the actual pipe diameter to ensure that the clamping force is uniform and stable, which avoids displacement caused by the pipe being clamped too loosely, and also prevents damage to the outer wall of the pipe from being clamped too tightly.

[0055] According to the slope design requirements of the pre-buried pipes in the fire protection project (such as drainage slope, exhaust slope, etc.), the tilt angle of the support seat 2 is adjusted by operating the tilt angle adjustment component 7. Since the support seat 2 is hinged to the rigid support base plate 1, the tilt angle adjustment component 7 applies an upward or downward force to the bottom of the support seat 2, driving the support seat 2 to rotate around the hinge point, thereby changing the tilt direction and angle of the pipe on the arc-shaped support plate 3.

[0056] During the adjustment process, the angle positioning component 8 indicates the tilt angle of the support base 2 in real time: the positioning indicator 82 fixed on the rigid support base plate 1 always points to the standard scale mark 81 on the support base 2. The operator can accurately control the tilt angle of the support base 2 by observing the scale value corresponding to the positioning indicator 82, and ensure that the pipe tilt angle meets the design specifications.

[0057] After the pipe inclination angle is fixed, the sealing component 5 is detachably assembled to the end of the support 2 near the pipe port using the locking component 6. During assembly, the frustum-shaped rubber sealing plug 52 on the sealing plate 51 in the sealing component 5 is aligned with the pipe port, and the sealing plate 51 is pushed until the frustum-shaped rubber sealing plug 52 is fully inserted into the pipe. The frustum-shaped structure can adapt to pipe ports with different inner diameters (the smaller end is inserted first, and the fit between the rubber sealing plug 52 and the inner wall of the pipe gradually increases with the insertion depth). The elastic deformation of the rubber material can fill the gap between the pipe port and the rubber sealing plug 52, thereby sealing the pipe port and preventing mud, sewage, debris and other contaminants from entering the pipe and causing blockage during construction, while also preventing corrosion of the inner wall of the pipe.

[0058] When the fire protection piping system is connected later, the locking component 6 and the sealing component 5 can be removed without affecting the normal connection of the pipes.

[0059] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the adjustable clamping assembly 4 includes a U-shaped positioning seat 41, an n-shaped stirrup 42, and a locking nut 43; at least two sets of U-shaped positioning seats 41 are fixed at intervals to the outer wall of the support seat 2, and two U-shaped positioning seats 41 in the same set are symmetrically distributed; the two vertical parts of the n-shaped stirrup 42 are provided with external threads, which pass through the two U-shaped positioning seats 41 in the same set; the locking nut 43 is provided at the protruding end of the n-shaped stirrup 42 by thread engagement. After adopting the above scheme, when the pipe is placed on the arc-shaped support plate 3, the initial position of the n-shaped stirrup 42 is adjusted according to the pipe diameter: the two vertical parts of the n-shaped stirrup 42 are respectively passed through the two symmetrically distributed U-shaped positioning seats 41 in the same set, so that the inner arc surface of the n-shaped stirrup 42 faces the outer wall of the pipe. At this time, the n-shaped stirrup 42 and the arc-shaped support plate 3 form a preliminary circumferential frame for the pipe. The U-shaped positioning seat 41 plays a guiding and limiting role on the vertical part of the n-shaped stirrup 42, preventing the n-shaped stirrup 42 from shifting during the adjustment process.

[0060] Rotate the locking nuts 43 extending from both ends of the U-shaped positioning seat 41 of the n-shaped stirrup 42. Utilize the screwing action of the locking nuts 43 and the external threads of the vertical part of the n-shaped stirrup 42 to drive the n-shaped stirrup 42 to move up and down along the guide direction of the U-shaped positioning seat 41. When the locking nuts 43 are tightened clockwise, the locking nuts 43 and the end face of the U-shaped positioning seat 41 come into contact and generate axial pressure, pushing the n-shaped stirrup 42 gradually closer to the outer wall of the pipe until the inner arc surface of the n-shaped stirrup 42 is tightly attached to the outer wall of the pipe, forming a two-way clamping structure for the pipe together with the arc-shaped support plate 3.

[0061] Optionally, by Figure 1 and Figure 3As shown, in this embodiment, the locking assembly 6 includes a horizontal rib 61, a connecting hook 62, and a wing nut 63. The horizontal rib 61 is fixed inside the support base 2. The hook of the connecting hook 62 is hooked onto the horizontal rib 61. The connecting hook 62 has external threads, and a slotted hole 512 for the connecting hook 62 to pass through is provided on the sealing plate 51. The wing nut 63 is screwed onto the protruding end of the connecting hook 62. With the above solution, before sealing the pipe port during use, first confirm that the horizontal rib 61 is firmly fixed to the inner wall of the support base 2 (e.g., by welding or bolting), and align the hook of the connecting hook 62 with the horizontal rib 61. The horizontal section is hung vertically downwards, so that the hook of the connecting hook 62 and the horizontal rib 61 form a stable engagement, preventing the connecting hook 62 from detaching from the horizontal rib 61 during subsequent operations. At the same time, the frustum-shaped rubber sealing plug 52 on the sealing plate 51 is aligned with the pipe port, and the position of the sealing plate 51 is adjusted so that the threaded section of the connecting hook 62 can smoothly pass through the oblong hole 512 on the sealing plate 51. The long axis of the oblong hole 512 can provide a certain positional compensation, allowing the sealing plate 51 to be finely adjusted within a small range, ensuring that the rubber sealing plug 52 is accurately aligned with the pipe port, and avoiding sealing failure due to assembly deviation.

[0062] After the connecting hook 62 passes through the waist-shaped hole 512, the wing nut 63 is fitted onto the protruding end of the connecting hook 62 and screwed clockwise by hand. Utilizing the meshing action between the wing nut 63 and the external thread of the connecting hook 62, the wing nut 63 moves axially towards the sealing plate 51 along the connecting hook 62, gradually fitting against the outer end face of the sealing plate 51. Continuing to tighten the wing nut 63 generates a continuous axial preload on the sealing plate 51, pushing the sealing plate 51 closer to the support seat 2. This causes the frustum-shaped rubber sealing plug 52 on the inner side of the sealing plate 51 to be squeezed into the pipe port. Under the preload, the frustum structure of the rubber sealing plug 52 undergoes elastic deformation, and its outer wall fits tightly against the inner wall of the pipe, filling the gap between the pipe port and the sealing plug. When the wing nut 63 is tightened to the point where it cannot be further tightened by hand (or the preset preload is reached), the sealing plate 51 is firmly locked between the support seat 2 and the wing nut 63, achieving a reliable seal at the pipe port.

[0063] When the sealing assembly 5 needs to be removed, the wing nut 63 is rotated counterclockwise by hand to move it away from the sealing plate 51 along the axis of the connecting hook 62 until the wing nut 63 is completely disengaged from the threaded section of the connecting hook 62. Then, the sealing plate 51 is pulled outward along the axis of the connecting hook 62 to pull the threaded section of the connecting hook 62 out of the waist-shaped hole 512. Finally, the connecting hook 62 is lifted upward to disengage the hook from the transverse rib 61, thus completing the disassembly of the entire sealing assembly 5. The disassembly process does not require special tools, is convenient to operate, and does not damage the support base 2 or the pipe structure.

[0064] Preferably, by Figure 1As shown in this embodiment, a reinforcing ridge 511 is fixed to the outer wall of the sealing plate 51. With the above solution, the reinforcing ridge 511 on the outer wall of the sealing plate 51 can significantly enhance the overall structural strength and deformation resistance of the sealing plate 51 during use. When the axial preload is applied by the wing nut 63, the reinforcing ridge 511 can disperse the distribution of the preload on the sealing plate 51, avoiding warping, denting and other deformations of the sealing plate 51 due to localized stress concentration, ensuring that the sealing plate 51 always remains flat, thereby ensuring the fitting accuracy of the frustum-shaped rubber sealing plug 52 with the pipe port, preventing the formation of sealing gaps due to deformation of the sealing plate 51, and improving sealing reliability.

[0065] Optionally, by Figure 1 and Figure 4 As shown, in this embodiment, the tilt adjustment assembly 7 includes a movable seat 71, a flip support arm 72, a fixed plate 73, a threaded screw 74, and a hand crank 75. The movable seat 71 is attached to the top surface of the rigid support base plate 1. The bottom end of the flip support arm 72 is hinged to the movable seat 71, and the top end is hinged to the support base 2. Two fixed plates 73 are symmetrically fixed to the top surface of the rigid support base plate 1. The threaded screw 74 is rotatably disposed between the two fixed plates 73 and threadedly engaged with the movable seat 71. The hand crank 75 is fixed to one end of the threaded screw 74 and is used to control the rotation of the threaded screw 74. With the above scheme, before tilt adjustment, it is confirmed that the movable seat 71 is attached to the top surface of the rigid support base plate 1 without jamming, the two ends of the flip support arm 72 are reliably hinged to the movable seat 71 and the support base 2 respectively (without loosening or abnormal noise), and the rotation of the threaded screw 74 and the two fixed plates 73 is smooth (without jamming), ensuring that each component is in a normal working state and providing a stable foundation for tilt adjustment.

[0066] The operator inputs adjustment power to the component by turning the hand crank 75: the hand crank 75 is fixed to one end of the threaded screw 74. When the hand crank 75 is turned, the threaded screw 74 will be rotated around the rotation axis between the two fixed plates 73 (the fixed plates 73 play a radial limiting and supporting role for the threaded screw 74, preventing axial displacement or radial shaking when the threaded screw 74 rotates).

[0067] Since the threaded screw 74 and the movable seat 71 are engaged by a thread, and the movable seat 71 is in contact with the top surface of the rigid support base plate 1 (the top surface of the rigid support base plate 1 restricts the movable seat 71 from rotating around the axis of the threaded screw 74), according to the principle of thread transmission, the rotational motion of the threaded screw 74 can be converted into the linear translational motion of the movable seat 71 along the top surface of the rigid support base plate 1. When the hand crank 75 is rotated clockwise, the threaded screw 74 drives the movable seat 71 to move towards the hinge point between the support base 2 and the rigid support base plate 1; when the hand crank 75 is rotated counterclockwise, the movable seat 71 moves away from the hinge point.

[0068] The flip support arm 72 is connected to the movable seat 71 and the support seat 2 respectively through the hinge structure at both ends. When the movable seat 71 moves towards the hinge point of the support seat 2, the bottom end of the flip support arm 72 moves towards the movable seat 71 in sync. The flip support arm 72 flips upward around the bottom hinge point, and its top end applies an upward supporting force to the support seat 2, pushing the support seat 2 to rotate upward around the hinge point with the rigid support base plate 1, so that the inclination angle of the pipe on the support seat 2 and the arc-shaped support plate 3 increases (inclines towards the preset upward slope direction).

[0069] When the movable seat 71 moves away from the hinge point of the support seat 2, the bottom end of the flip support arm 72 moves away synchronously with the movable seat 71. The entire flip support arm 72 flips downward around the bottom hinge point, and the supporting force of its top end on the support seat 2 decreases. Under the action of its own weight and the weight of the pipe, the support seat 2 rotates downward around the hinge point, thereby reducing the inclination angle of the pipe (tilting towards the preset downhill direction or returning to horizontal).

[0070] Preferably, by Figure 1 and Figure 4 As shown in this embodiment, the tilt adjustment assembly 7 also includes guide rods 76; two guide rods 76 are symmetrically fixed between two fixed plates 73 and pass through the movable seat 71. With the above scheme, when in use, the two symmetrically distributed guide rods 76 pass through the movable seat 71 and are fixed between the fixed plates 73, forming a bidirectional guide constraint structure, which can strictly limit the translation trajectory of the movable seat 71, ensuring that the movable seat 71 only moves linearly along the axial direction of the guide rods 76, avoiding lateral offset, torsion or jamming of the movable seat 71 under the drive of the threaded screw 74, thereby ensuring the stability of the bottom movement trajectory of the flip support arm 72, and providing a precise transmission basis for the tilt adjustment of the support seat 2.

[0071] Preferably, by Figure 1 and Figure 6As shown, this embodiment also includes a protective clamping assembly 9, which includes an arc-shaped pressure plate 91 and a positioning protrusion 92. The arc-shaped pressure plate 91 is located inside the n-shaped stirrup 42 and is used to clamp the pipe in conjunction with the arc-shaped support plate 3. Two limiting rings 421 are fixed on the n-shaped stirrup 42 to limit the lateral displacement of the arc-shaped pressure plate 91. The positioning protrusion 92 is fixed to the outer wall of the arc-shaped pressure plate 91, and a positioning groove 921 adapted to the n-shaped stirrup 42 is provided on the positioning protrusion 92. With the above scheme, before clamping the pipe, the protective clamping assembly 9 and the n-shaped stirrup 42 are pre-assembled: the arc-shaped... The pressure plate 91 is placed inside the n-shaped stirrup 42, so that the positioning protrusion 92 on the outer wall of the arc-shaped pressure plate 91 is aligned with the rod of the n-shaped stirrup 42. The positioning groove 921 on the positioning protrusion 92 is adapted to engage with the rod of the n-shaped stirrup 42, so that the arc-shaped pressure plate 91 and the n-shaped stirrup 42 are initially positioned. At the same time, the two limiting rings 421 fixed on the n-shaped stirrup 42 are located on both sides of the positioning protrusion 92, forming a lateral limiting structure, which can prevent the positioning protrusion 92 from moving axially along the rod of the n-shaped stirrup 42, thereby limiting the lateral displacement of the arc-shaped pressure plate 91 and ensuring that the arc-shaped pressure plate 91 is always aligned with the pipe clamping area, avoiding deviation after pre-assembly.

[0072] When the locking nut 43 is rotated to drive the n-shaped stirrup 42 to move towards the pipeline, the n-shaped stirrup 42 transmits the downward pressure to the arc-shaped pressure plate 91 through the locking structure of the positioning groove 921 and the rod body, causing the arc-shaped pressure plate 91 to move towards the outer wall of the pipeline in sync with the n-shaped stirrup 42.

[0073] Since the inner arc surface of the arc-shaped pressure plate 91 has the same curvature as the inner arc surface of the arc-shaped support plate 3 and is compatible with the outer wall of the pipe, as the n-shaped stirrup 42 continues to move downward, the inner arc surface of the arc-shaped pressure plate 91 gradually fits into the outer wall of the pipe, forming an upper clamping surface corresponding to the arc-shaped support plate 3, which together constitutes an upper and lower ring-shaped clamping structure for the pipe.

[0074] During the clamping process, while the positioning groove 921 is tightly engaged with the n-shaped stirrup 42, the positioning protrusion 92 can also enhance the structural rigidity of the arc-shaped pressure plate 91, preventing the arc-shaped pressure plate 91 from deforming due to the clamping force; the limiting rings 421 on both sides continuously restrict the lateral displacement of the arc-shaped pressure plate 91, preventing the arc-shaped pressure plate 91 from shifting left or right after the pipeline is clamped or during construction vibration, thus preventing clamping failure.

[0075] Ultimately, under the synergistic effect of the positioning protrusion 92, the positioning groove 921, and the limiting ring 421, the arc-shaped pressure plate 91 forms a stable and uniform clamping force with the arc-shaped support plate 3, which not only ensures that the pipe is firmly clamped, but also disperses the pressure by increasing the clamping contact area, thus avoiding damage to the outer wall of the pipe.

[0076] Preferably, by Figure 1 and Figure 6As shown, this embodiment also includes a rubber liner 10; the rubber liner 10 is bonded and fixed to the inner wall of both the arc-shaped support plate 3 and the arc-shaped pressure plate 91, and the inner wall of the rubber liner 10 is evenly distributed with anti-slip protrusions 101. With the above solution, the rubber liner 10 (such as nitrile rubber) has good elastic deformation ability during use. During the clamping process, it can absorb the impact force generated by the clamping force through its own deformation, avoiding direct hard contact between the rigid clamping components (arc-shaped support plate 3, arc-shaped pressure plate 91) and the outer wall of the pipe. At the same time, the rubber material is soft and has no sharp edges, which can effectively disperse the clamping pressure and prevent the pipe from having indentations, scratches or plastic deformation due to localized force concentration. It is especially suitable for easily damaged materials such as galvanized fire pipes and plastic fire pipes, ensuring that the integrity of the pipe is not affected.

[0077] The anti-slip ridges 101 evenly distributed on the inner wall of the rubber liner 10 can significantly increase the friction coefficient with the outer wall of the pipe. When the pipe is placed at an angle (such as to meet the slope requirements of fire drainage) or when there is vibration in the construction environment, the anti-slip ridges 101 can be embedded in the tiny textures of the outer wall of the pipe or produce a biting effect, effectively inhibiting the pipe from sliding along the axial or circumferential direction of the arc-shaped support plate 3. Combined with the clamping force of the arc-shaped pressure plate 91, it ensures that the pipe maintains accurate positioning and has no risk of displacement throughout the entire construction cycle.

[0078] In addition, the elastic properties of the rubber liner 10 can adapt to the slight pipe diameter deviations that may occur during pipe manufacturing. Through elastic deformation, it can automatically fill the gap between the outer wall of the pipe and the clamping component, ensuring that even if the pipe diameter fluctuates slightly, a tight clamping effect can still be achieved.

[0079] Components not described in detail in this article are existing technologies.

[0080] The working principle and usage process of this utility model: When using the device for pre-embedded pipes of this utility model, the rigid support base plate 1 is first fastened to the bottom of the construction pit, the building foundation structure and other fixed surfaces by expansion bolts or pre-embedded parts to ensure that there is no loose gap between the rigid support base plate 1 and the fixed surface, so as to provide a stable support foundation for the entire device and avoid the overall displacement of the device during subsequent pipe installation and adjustment.

[0081] The support base 2 is hinged above the rigid support base plate 1. The fire-fighting pipe to be embedded is placed on the arc-shaped support plate 3 at the top of the support base 2. The inner arc surface of the arc-shaped support plate 3 is adapted to the outer wall of the pipe. By increasing the contact area, the pipe is initially positioned, preventing the pipe from rolling randomly in the horizontal direction, and laying the foundation for subsequent clamping and fixing.

[0082] After the pipeline is initially positioned, the n-shaped stirrups 42 are adjusted according to the pipe diameter so that their two vertical parts pass through the U-shaped positioning seats 41 that are symmetrically fixed on the outer wall of the support seat 2. The arc-shaped pressure plate 91 is engaged with the n-shaped stirrups 42 through the positioning groove 921 of the positioning protrusion 92 on the outer wall, and the limiting ring 421 on the n-shaped stirrups 42 restricts the lateral displacement of the arc-shaped pressure plate 91. The locking nut 43 at the protruding end of the n-shaped stirrups 42 is tightened, and the thread engagement driving force is used to make the n-shaped stirrups 42 drive the arc-shaped pressure plate 91 to move closer to the pipeline. The arc-shaped pressure plate 91 and the arc-shaped support plate 3 cooperate to form a ring-shaped clamping structure.

[0083] Meanwhile, the rubber liner 10 bonded to the inner wall of the arc-shaped support plate 3 and the arc-shaped pressure plate 91 buffers the clamping force through elastic deformation, avoiding damage to the outer wall of the pipe. The anti-slip convex strips 101 evenly distributed on the inner wall increase the friction with the outer wall of the pipe, preventing the pipe from sliding and achieving stable clamping of the pipe.

[0084] According to the construction slope requirements, the hand crank 75 of the tilt adjustment component 7 is rotated, which drives the threaded screw 74 to rotate around the fixed plate 73. Since the threaded screw 74 is threadedly engaged with the moving seat 71 and the moving seat 71 is limited by the guide rod 76, the rotation of the threaded screw 74 is converted into the linear translation of the moving seat 71 along the top surface of the rigid support base plate 1.

[0085] The moving seat 71 moves and drives the flipping support arm 72 to flip around the hinge points at both ends, pushing the support seat 2 to rotate around the hinge point with the rigid support base plate 1, thereby changing the pipe tilt angle.

[0086] During the adjustment process, the positioning indicator 82 of the angle positioning component 8 points to the standard scale mark 81 on the support seat 2, indicating the tilt angle in real time, which is convenient for precise control. After the adjustment is in place, the self-locking characteristic of the threaded screw 74 is used to lock the position of the moving seat 71, so that the support seat 2 and the pipeline maintain the set tilt angle.

[0087] After the pipe inclination angle is fixed, the hook of the connecting hook 62 of the locking assembly 6 is hooked onto the horizontal rib 61 in the support base 2. The threaded section of the connecting hook 62 passes through the waist-shaped hole 512 of the sealing plate 51. The wing nut 63 at the protruding end of the connecting hook 62 is tightened. The thread preload force pushes the sealing plate 51 to move toward the pipe port, so that the frustum-shaped rubber sealing plug 52 on the sealing plate 51 is inserted into the pipe port. The rubber sealing plug 52 elastically deforms to fill the gap, thereby sealing the pipe port.

[0088] The reinforcing ribs 511 on the outer wall of the sealing plate 51 enhance the structural rigidity of the sealing plate 51, prevent the sealing plate 51 from deforming under stress, optimize the transmission of pre-tightening force, ensure the sealing effect, and facilitate subsequent disassembly.

[0089] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for pre-embedded pipes used in fire protection engineering construction, characterized in that, include: Rigid support base plate (1), the rigid support base plate (1) is used to be fixedly connected to the bottom of the construction tunnel or the foundation structure; Support base (2), the support base (2) is hinged above the rigid support base plate (1), and the top of the support base (2) is fixed with an arc-shaped support plate (3) for supporting the pipe. Adjustable clamping assembly (4), which cooperates with the arc-shaped support plate (3) to form an adjustable clamping and fixing structure for the pipe; The sealing assembly (5) is detachably assembled to one end of the support base (2) using the locking assembly (6) for sealing the pipe port. It includes a sealing plate (51) and a frustum-shaped rubber sealing plug (52) fixed on the sealing plate (51). Inclination adjustment component (7), wherein the inclination adjustment component (7) is disposed between the rigid support base plate (1) and the support seat (2), and is used to adjust the inclination angle of the support seat (2); An angle positioning component (8) is used to indicate the tilt angle of the support base (2). It includes a standard scale mark (81) on the support base (2) and a positioning indicator pin (82) fixed on the rigid support base (1).

2. The device for pre-embedded pipelines in fire protection engineering construction according to claim 1, characterized in that: The adjustable clamping assembly (4) includes a U-shaped positioning seat (41), an n-shaped stirrup (42), and a locking nut (43). At least two sets of the U-shaped positioning seats (41) are fixed at intervals to the outer side wall of the support seat (2), and there are two U-shaped positioning seats (41) in the same set symmetrically distributed; The n-shaped stirrup (42) has external threads on its two vertical parts and passes through the two U-shaped positioning seats (41) in the same group. The locking nut (43) is provided at the protruding end of the n-shaped stirrup (42) by means of thread engagement.

3. The device for pre-embedded pipelines in fire protection engineering construction according to claim 1, characterized in that: The locking assembly (6) includes a horizontal rib (61), a connecting hook (62), and a wing nut (63). The transverse rib (61) is fixed inside the support base (2); The hook of the connecting hook (62) is attached to the horizontal rib (61). The connecting hook (62) is provided with external threads, and a waist-shaped hole (512) is provided on the sealing plate (51) for the connecting hook (62) to pass through. The wing nut (63) is provided at the protruding end of the connecting hook (62) by means of thread engagement.

4. The device for pre-embedded pipelines in fire protection engineering construction according to claim 1, characterized in that: The outer wall of the sealing plate (51) is fixed with a reinforcing ridge (511).

5. The device for pre-embedded pipelines in fire protection engineering construction according to claim 1, characterized in that: The tilt adjustment assembly (7) includes a movable seat (71), a flip support arm (72), a fixed plate (73), a threaded screw (74), and a hand crank (75). The movable seat (71) is attached to the top surface of the rigid support base plate (1); The bottom end of the flip support arm (72) is hinged to the movable seat (71), and the top end is hinged to the support seat (2); The two fixing plates (73) are symmetrically fixed to the top surface of the rigid support base plate (1); The threaded screw (74) is rotatably disposed between the two fixed plates (73) and threadedly engaged with the movable seat (71); The hand crank (75) is fixed to one end of the threaded screw (74) and is used to control the rotation of the threaded screw (74).

6. The device for pre-embedded pipelines in fire protection engineering construction according to claim 5, characterized in that: The tilt adjustment assembly (7) also includes a guide rod (76); The two guide rods (76) are symmetrically fixed between the two fixed plates (73) and pass through the movable seat (71).

7. The device for pre-embedded pipelines in fire protection engineering construction according to claim 2, characterized in that: It also includes a protective clamping assembly (9), and the protective clamping assembly (9) includes an arc-shaped pressure plate (91) and a positioning protrusion (92). The arc-shaped pressure plate (91) is located inside the n-shaped stirrup (42) and is used to clamp the pipe in conjunction with the arc-shaped support plate (3). Two limiting rings (421) are fixed on the n-shaped stirrup (42) to limit the lateral displacement of the arc-shaped pressure plate (91). The positioning protrusion (92) is fixed to the outer wall of the arc-shaped pressure plate (91), and a positioning groove (921) adapted to the n-shaped stirrup (42) is provided on the positioning protrusion (92).

8. The device for pre-embedded pipelines in fire protection engineering construction according to claim 7, characterized in that: It also includes a rubber liner (10); Rubber liners (10) are bonded and fixed to the inner walls of the arc-shaped support plate (3) and the arc-shaped pressure plate (91), and anti-slip ridges (101) are evenly distributed on the inner wall of the rubber liners (10).

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