Fire-fighting open-distribution steel pipe fixing structure
By combining saddles and node-connected pipes, the problems of seismic performance and construction complexity of fire protection exposed steel pipe fixing structures are solved, achieving stable electrical pipe fixing and simplifying construction, thus reducing costs.
Patent Information
- Application Number
- CN202520472865.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing fire protection exposed steel pipe fixed structures have shortcomings in terms of seismic performance and construction complexity. In particular, complex inclined cable designs are required in earthquake-prone areas, which increases costs.
The system employs a combination of saddle and node-connected pipe structure, with steel pipes fixed through anchor holes and pre-embedded rods. Combined with the adjustable node-connected pipe and saddle design, it achieves stable fixing of electrical conduits, avoids suspended structures, and simplifies construction.
It achieves secure fixing of electrical conduits, simplifies the construction process, reduces construction complexity and cost, and avoids exposed cables, while adapting to the needs of different junction box locations.
Smart Images
Figure CN223868698U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fire protection pipeline installation technology, and in particular to a fixed structure for exposed fire protection steel pipes. Background Technology
[0002] In addition to the basic brick and reinforced concrete structure, buildings require various interior design and decoration before occupancy. Decoration includes both hard furnishings and soft furnishings, with soft furnishings including electrical appliances such as air conditioners, refrigerators, and lighting fixtures to improve the indoor environment and meet diverse usage needs. Since many of these appliances require power from the grid, the building structure will contain a large amount of electrical wiring.
[0003] To ensure a neat and aesthetically pleasing electrical cable structure, and to protect the cables from accidental contact and damage, electrical conduits are typically laid first in building structures, and then the cables are laid inside the conduits. This type of design can be called fire protection engineering construction organization design.
[0004] Electrical conduits can be installed using concealed or exposed steel pipes within the concrete structure ceiling. Exposed conduits can be installed in rows using round steel rods as hangers and angle steel as crossbeams to fix them below the floor slab, or they can be installed as single exposed conduits using round steel supports and pipe clamps to fix them inside the suspended ceiling.
[0005] The two methods mentioned above can fix electrical conduits, but because they both use hangers and supports for suspension, there is a large gap between them and the floor slab, which poses a risk of swaying. In areas with relatively frequent earthquakes, such as Sichuan and Chongqing in my country, special consideration needs to be given to seismic performance, which leads to the need for seismic design such as diagonal bracing of the hangers, increasing the complexity of the structure and the complexity of construction. At present, labor costs account for a large proportion, which makes the overall cost increase significantly. Therefore, this application proposes a new technical solution. Utility Model Content
[0006] To achieve a simpler and more stable installation of exposed piping, this application provides a fixing structure for exposed fire protection steel pipes.
[0007] This application provides a fixed structure for exposed steel pipes used in fire protection systems, employing the following technical solution:
[0008] A fire-fighting exposed steel pipe fixing structure includes a saddle and a node connecting pipe. The saddle is provided with a bundled pipe channel and has multiple anchor holes on the side of the bundled pipe channel. The orientation of the anchor holes forms an angle greater than zero degrees with the through direction of the bundled pipe channel. The two pipe ports of the node connecting pipe are parallel and staggered. The end view contour of at least one pipe port of the node connecting pipe covers the bundled pipe channel. The node connecting pipe is inserted into the through surface of the bundled pipe channel of the saddle. The pipe is inserted into the bundled pipe channel of the saddle or the pipe port of the node connecting pipe.
[0009] Optionally, it also includes a pre-embedded rod, one end of which is an inner end and the other end is an outer end; the inner end of the pre-embedded rod is used for pre-embedding in the floor slab, and the outer end is T-shaped or trapezoidal in side view; the pre-embedded rod is at least hollow at its outer end and is provided with internal threads.
[0010] Optionally, the saddle includes two saddle blocks, which are distributed along the direction of penetration of the vertical bundle tube channel. One end of each saddle block is fixed with a mating block, and the other end is provided with a mating slot. The mating block of one saddle block in the same saddle is inserted into the mating slot of the other saddle block, and the other slot is penetrated by an anchor hole.
[0011] Optionally, the mating block has a slit along the arrangement direction of the two saddle blocks, the mating block has an expansion hole for the pre-embedded rod to pass through, the end of the expansion hole is elliptical, the slit splits the expansion hole, the side of the mating block is provided with locking teeth, and the saddle block is provided with a locking groove in the mating slot that is adapted to the locking teeth.
[0012] Optionally, the node connecting pipe includes section A and section B. One end of section A is folded inward, and one end of section B is folded outward. Section A is inserted into the saddle and its inward folded end is fitted onto the outward folded end of section B. Section B and section A are rotatably connected. The pipe is inserted into the saddle, enters section A, and abuts against the outward folded end of section B.
[0013] Optionally, the saddle has an outer groove at the through-hole of the bundle tube channel, and one end of section A is inserted into the outer groove and an adjustment piece is provided between it and the groove wall of the outer groove.
[0014] Optionally, the lower section of the embedded rod is trapezoidal in front of view, with the upper base of the trapezoid facing downwards.
[0015] In summary, this application includes the following beneficial technical effects:
[0016] 1) Electrical conduits are fixed by saddles that directly contact the floor slab. Since there are no hangers or supports in the middle, it is no longer a suspended structure, so there is no need for auxiliary earthquake resistance or sway prevention structures such as diagonal bracing.
[0017] 2) The presence of the node connector allows for a height difference between the cable path and the conduit of the saddle. Therefore, as long as the node connector has a certain bend and the spacing between the two ports is appropriate, it can be smoothly connected to the junction box after installation and application in this structure to complete the cable laying, ensuring that there are no exposed sections of the cable and eliminating the need to customize new types of junction boxes. Attached Figure Description
[0018] Figure 1 This is the front view of this application;
[0019] Figure 2 This is a three-dimensional image recognition of this application;
[0020] Figure 3 This is a partial exploded view of the structure of this application.
[0021] Explanation of reference numerals in the attached drawings: 1. Saddle; 10. Bundle tube channel; 101. Anchor hole; 102. Outer groove; 11. Saddle block; 12. Insertion block; 121. Expansion hole; 122. Locking tooth; 2. Node insertion tube; 3. Embedded rod. Detailed Implementation
[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0023] This application discloses a fixed structure for exposed steel pipes used in fire protection.
[0024] Reference Figure 1 and Figure 2 The fire-fighting exposed steel pipe fixing structure includes a saddle 1. The saddle 1 is block-shaped and has a bundled pipe channel 10 along its thickness direction. Multiple anchor holes 101 are provided on the side of the bundled pipe channel 10. Taking two anchor holes 101 as an example, the two holes are located on opposite sides of the bundled pipe channel 10. The orientation of the anchor holes 101 forms an angle greater than zero degrees with the through direction of the bundled pipe channel, preferably around 90 degrees, so that workers can insert screws into the anchor holes 101 to fix the saddle 1 under the floor slab. At this time, the pipe is inserted into the bundled pipe channel 10 of the saddle 1 to fix the electrical pipe.
[0025] However, electrical conduits are for running cables, and the cables need to enter junction boxes / enclosures. The aforementioned structure alone would prevent the electrical conduits from being correctly inserted into existing junction boxes, affecting the fire protection effect on the cables. Therefore, this application also includes: a node-connecting pipe 2, the two pipe ports of the node-connecting pipe 2 are parallel and staggered, that is, the port axes are parallel but do not coincide. The end view of at least one pipe port of the node-connecting pipe 2 covers the bundled tube channel 10, that is, it has a larger diameter. When connecting, it is not inserted into the bundled tube channel 10, but rather externally on the saddle 1. One end of the node-connecting pipe 2 is in contact with the bundled tube channel 10 inserted into the saddle 1.
[0026] The insertion of the aforementioned node connector 2 differs from the usual insertion into a hole. It is designed to allow electrical conduits to be directly inserted into the saddle 1 and further into the node connector 2. In this way, the material of the saddle 1 does not have to be the same as that of the conduit. The saddle 1 can be made of plastic or other metals, and the node connector 2 can be made of the same material as the conduit to ensure protective performance. More importantly, the above setting can eliminate the need for customized electrical conduits. Existing electrical conduit styles, i.e., smooth and straight pipes, are sufficient.
[0027] Based on the above settings, as long as the node connecting pipe 2 has a certain bend and the distance between the two ports is appropriate, it can be smoothly connected to the junction box after installation and application to complete the cable laying, so that there are no exposed sections of the cable and no need to customize a new type of junction box.
[0028] If the saddle 1 is fixed by simply inserting a screw through the anchor hole 101 into the floor slab, the stability of the saddle 1 is relatively poor. In particular, it is prone to loosening and falling off after long-term corrosion of concrete structures. Therefore, this application also includes the embedded rod 3.
[0029] One end of the embedded rod 3 is the inner end, and the other end is the outer end. The inner end of the embedded rod 3 can be embedded into the floor slab during concrete pouring, while the outer end is T-shaped or trapezoidal in side view. This structural design allows the anchor hole 101 on the saddle 1 to be easily aligned with the embedded rod 3, and the saddle 1 to be placed in position quickly and accurately.
[0030] The embedded rod 3 has at least a hollow structure at its outer end and is provided with internal threads. That is, after the outer end of the embedded rod 3 is inserted into the saddle 1, the workers can fix the saddle 1 by tightening the screws to the embedded rod 3. At this time, the fixing of the saddle 1 will not damage the concrete structure and is relatively less likely to loosen.
[0031] The upper end of the pre-embedded rod 3 is fixed with a horizontal plate and other transverse extension structures to improve tensile strength.
[0032] In another embodiment of this application, considering that the precision during actual construction and manufacturing of accessories may not be very high, if the above design is followed, it is easy for the saddle 1 to misalign with the pre-embedded rod 3 if the size of the anchor hole 101 is not large. Therefore:
[0033] Reference Figure 2 and Figure 3 The saddle 1 includes two saddle blocks 11, for example, vertically divided into two from the axial plane of the bundle tube channel 10; the two saddle blocks 11 are distributed along the direction perpendicular to the through direction of the bundle tube channel 10, one end of the saddle block 11 is formed with a mating block 12, and the other end is provided with a mating slot; the mating block 12 of one saddle block 11 in the same saddle 1 is inserted into the mating slot of the other saddle block 11, and the other slot is penetrated by the anchor hole 101.
[0034] According to the above configuration, the saddle 1 is designed to be spliced on the left and right. The two saddle blocks 11 can be separated by a certain distance as needed, so that the saddle 1 is not affected when there is a slight error in the spacing between the corresponding pairs of embedded rods 3.
[0035] More importantly, according to the above configuration, this application can not only meet the installation of a single exposed pipe, but also realize the installation of rows of exposed pipes, and each saddle 1 can be plugged into each other to form a whole; at the same time, because of the positional relationship between the above anchor hole 101 and the slot, when multiple saddles 1 are combined, the embedded rod 3 will also pass through the interlocking block 12 on the adjacent saddle 1 to lock the adjacent saddle 1.
[0036] In another embodiment of this application, the insert block 12 is provided with a slit along the arrangement direction of the two saddle blocks 11, and an expansion hole 121 for the pre-embedded rod to pass through is provided on the insert block. The end of the expansion hole 121 is elliptical. The slit splits the expansion hole 121.
[0037] Locking teeth 122 are formed on the side of the insert block 12, and locking grooves adapted to the locking teeth are formed in the saddle block 11.
[0038] It is understandable that when the pre-embedded rod 3 is not inserted into the expansion hole 121, the insert block 12 and the locking teeth 122 on the side can be smoothly inserted into the slot because there is a crack in the middle; however, when the lower end of the pre-embedded rod 3 is inserted into the expansion hole 121 and the crack is opened on both sides, the insert block 12 will be unable to be pulled out because the locking teeth 122 are stuck in the locking groove.
[0039] The aforementioned design of the slit in the insert 12 and the elliptical shape of the expansion hole 121 are intended to ensure that the two saddle blocks 11 of the same saddle 1 can still be used even when they are pulled apart slightly.
[0040] Furthermore, the downward-facing section of the embedded rod 3 is trapezoidal in main view, with the upper base of the trapezoid facing downwards, i.e., larger at the top and smaller at the bottom. This design facilitates the insertion of the embedded rod 3 into the expansion hole 121 and allows the saddle 1 to be relatively easily removed and moved before the final installation is confirmed, preventing the saddle 1 from being forced open by the crack and becoming firmly pressed against it, which would cause the saddle 1 to move up and down relative to the embedded rod 3 with sluggishness and difficulty.
[0041] In another embodiment of this application, the node connecting pipe 2 includes section A and section B, wherein section A is a straight pipe section and section B is Z-shaped (i.e., the ends are parallel but not collinear). One end of section A is folded inward and one end of section B is folded outward. Section A is inserted into the saddle and the inward folded end is fitted onto the outward folded end of section B. Section B and section A are rotatably connected. The electrical conduit is inserted into the saddle 1, enters section A, and abuts against the outward folded end of section B.
[0042] Based on the above setup, firstly, workers can meet the needs of different junction box wiring hole positions by replacing section B with different bending amounts. The manufacturer does not need to make the entire node connecting pipe 2 with various bending amounts; only section B with different bending amounts is required. Secondly, after the electrical conduit is installed, due to the initial setup, its end can be inserted into section A to hold the end of section B, thus fixing the position of section B and preventing the cable from being exposed due to the spliced connection. Finally, section A can be welded to saddle 1, which makes the entire node connecting pipe 2 relatively difficult to rotate.
[0043] In one embodiment of this application, the saddle 1 has an outer groove 102 around the through opening of the bundle tube channel 10. One end of section A is inserted into the outer groove 102 and an adjustment piece is inserted between it and the groove wall of the outer groove 102. The adjustment piece can be an elastic piece, a wooden piece, a metal piece, etc.
[0044] The above configuration ensures that when the two saddle blocks 11 of the saddle 1 are slightly adjusted and separated, the A-section of the node connecting pipe 2 will not be obstructed too much. Only an adjustment piece of appropriate thickness needs to be inserted in the middle. Moreover, the A-section can still be a round pipe; otherwise, it would be more appropriate to consider the end of the A-section as rectangular.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fixed structure for exposed steel pipes used in fire protection systems, characterized in that: The assembly includes a saddle (1) and a node connector (2). The saddle (1) is provided with a bundle tube channel (10) and multiple anchor holes (101) are provided on the side of the bundle tube channel (10). The orientation of the anchor holes (101) forms an angle greater than zero degrees with the through direction of the bundle tube channel (10). The two pipe ports of the node connector (2) are parallel and staggered. The end view profile of at least one pipe port of the node connector (2) covers the bundle tube channel (10). The node connector (2) is inserted into the through surface of the bundle tube channel (10) of the saddle (1). The pipe is inserted into the bundle tube channel (10) of the saddle (1) or the pipe port of the node connector (2).
2. The fire-fighting exposed steel pipe fixing structure according to claim 1, characterized in that: It also includes a pre-embedded rod (3), one end of which is the inner end and the other end is the outer end; the inner end of the pre-embedded rod (3) is used for pre-embedding in the floor slab, and the outer end is T-shaped or trapezoidal in side view; the pre-embedded rod (3) is at least hollow at the outer end and is provided with internal threads.
3. The fire-fighting exposed steel pipe fixing structure according to claim 2, characterized in that: The saddle (1) includes two saddle blocks (11), which are distributed along the direction of penetration of the vertical bundle channel (10). One end of the saddle block (11) is fixed with a mating block (12), and the other end is provided with a mating slot. The mating block (12) of one saddle block (11) in the same saddle (1) is inserted into the mating slot of the other saddle block (11), and the other slot is penetrated by an anchor hole (101).
4. The fire-fighting exposed steel pipe fixing structure according to claim 3, characterized in that: The interlocking block (12) has a slit along the arrangement direction of the two saddle blocks (11). The interlocking block (12) has an expansion hole (121) for the pre-embedded rod (3) to pass through. The end of the expansion hole (121) is elliptical. The slit splits the expansion hole (121). The side of the interlocking block (12) is provided with a locking tooth (122). The saddle block (11) is provided with a locking groove in the interlocking slot that is adapted to the locking tooth (122).
5. The fire-fighting exposed steel pipe fixing structure according to claim 3, characterized in that: The node connecting pipe (2) includes section A and section B. One end of section A is folded inward and one end of section B is folded outward. Section A is inserted into the saddle (1) and the folded-in end is fitted onto the folded-out end of section B. Section B and section A are rotatably connected. The pipe is inserted into the saddle (1) into section A and abuts against the folded-out end of section B.
6. The fire-fighting exposed steel pipe fixing structure according to claim 5, characterized in that: The saddle (1) has an outer groove (102) around the through opening of the bundle tube channel (10). One end of the A section is inserted into the outer groove (102) and an adjustment piece is provided between the A section and the groove wall of the outer groove (102).
7. The fire-fighting exposed steel pipe fixing structure according to claim 4, characterized in that: The lower section of the pre-embedded rod (3) is trapezoidal in shape with the upper base of the trapezoid facing downwards.