Three-pole support body for post-pouring belt

Abstract

A three-pole support body for post-pouring zone. The problem of insufficient bearing capacity of the threaded connection of the traditional independent support structure is solved. The utility model discloses three single support poles, six connecting assemblies and six plug-in plates, the three single support poles are vertically arranged side by side, the three single support poles are arranged in a triangular array, one plug-in plate is arranged at the both ends of each single support pole, and one connecting assembly is arranged between the adjacent two plug-in plates. Each single support pole comprises a main pole, an extension pole, an extension support assembly, an internal thread ring and a plug-in rod, the extension pole is arranged in the upper end of the main pole, the extension support assembly is arranged in the extension pole, the extension support assembly is arranged in the main pole, the internal thread ring is threadedly connected with the upper end of the main pole, and the plug-in rod is sequentially arranged in the main pole, the extension pole and the extension support assembly. The main pole comprises a main pipe, a support seat one and a plurality of annular clamping pieces, the main pipe is provided with the support seat one at one end, the outer wall of the other end of the main pipe is provided with an external thread, and the external thread is threadedly connected with the internal thread ring.

Description

Technical Field

[0001] This utility model specifically relates to a three-bar support for post-cast strips, belonging to the field of building structure technology. Background Technology

[0002] The independent supports in the post-cast strip transform the beams and slabs, which were in a cantilever state before closure, into a "temporarily supported" system by bearing the load independently. This prevents deflection, cracking, or even damage caused by shared supports or premature removal. Its "non-removable" structure eliminates the risk of secondary settlement and false support caused by workers' illegal backfilling and provides ample space for roughening, cleaning, and other construction joint treatments. At the same time, the modular design of reusable triangular columns, PVC pipe molds, and other tools reduces the footprint, facilitates basement transportation and secondary structure integration, and can be flexibly adjusted for different post-cast strip settlements or temperatures, achieving a balance between efficient material turnover, civilized construction, and structural safety.

[0003] After elevation adjustment, the existing adjustable independent supports transform their threaded joints into rigid force transmission nodes, causing the axial load to be entirely borne by the limited contact surface of the meshing threads. Due to the helical slope of the thread profile, stress is unevenly distributed, resulting in significant stress concentration at the tooth root. Furthermore, micro-slippage caused by the threaded joint clearance further induces fatigue damage, significantly weakening the overall load-bearing capacity and stability reserve of the support. In addition, the weakened cross-section of the threaded section, reduced radius of gyration, and increased slenderness ratio lead to decreased compressive stability. Under the coupled effect of continuous load and construction vibration, the thread locking force may loosen, triggering progressive settlement and adversely affecting the safety redundancy of the post-cast strip cantilevered components. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a three-bar support for post-cast strips is provided to solve the above problems.

[0005] A three-bar support for post-cast strips includes three individual support rods, six connecting components, and six insert plates. The three individual support rods are arranged vertically side by side in a triangular array. Each individual support rod has an insert plate at both ends, and a connecting component is provided between adjacent insert plates. Each individual support rod includes a main rod, a telescopic rod, an extension support component, an internal threaded ring, and an insert rod. The telescopic rod passes through the upper end of the main rod, and the extension support component passes through the telescopic rod. The extension support component passes through the main rod, and the internal threaded ring is threaded to the upper end of the main rod. The insert rod passes through the main rod, the telescopic rod, and the extension support component in sequence. The main rod includes a main pipe, a support base, and several annular clips. The support base is provided at one end of the main pipe. The outer wall of the other end is provided with an external thread, which is connected to the internal thread in a ring thread. The inner wall of the main pipe is provided with several annular clips along its length. The main pipe is machined with a strip hole along its thickness, and a rod is inserted through the strip hole. The extension support assembly includes an operating rod, a U-shaped connecting rod, an annular piece, a compression tube, a handle, and multiple support petals. The telescopic rod is provided with a handle along its thickness. The handle is located at one end of the operating rod. The other end of the operating rod is provided with a U-shaped connecting rod. A compression tube is provided on the U-shaped connecting rod. An annular piece is inserted through the telescopic rod. The annular piece is fixedly connected to the telescopic rod to make them a whole. Multiple support petals are provided along the circumference of the end of the compression tube. The compression tube is fitted onto the multiple support petals. The ends of the support petals are attached to the annular clips.

[0006] As a preferred embodiment: the telescopic pole includes a telescopic pole body and a second support base. The second support base is provided at one end of the telescopic pole body, and an extension support assembly is provided at the other end of the telescopic pole body. The telescopic pole body is inserted into the main pipe. An adjustment hole is machined on the telescopic pole body along its thickness direction. A handle is inserted into the adjustment hole. Multiple circular insertion holes are machined on the telescopic pole body along its length direction. Inserted rods are inserted into the circular insertion holes. An annular component is fixedly installed inside the telescopic pole body.

[0007] As a preferred embodiment: the insert includes an L-shaped plug and a threaded component, one end of the L-shaped plug passes through the strip hole and the circular insertion hole in sequence, and the other end of the L-shaped plug is threadedly connected to the threaded component.

[0008] As a preferred embodiment: each connecting component includes a stabilizer bar and two inserts, with an insert at each end of the stabilizer bar and the inserts passing through their corresponding sockets.

[0009] As a preferred option: each plug pad has several holes along its circumference, and the plug is inserted into the hole corresponding to its position.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention utilizes the coordinated operation of independent support rods and connecting components to construct a triangular configuration enclosed by three rods, forming a highly stable spatial support system. The threaded engagement mechanism between the internal threaded ring and the insert rod enables stepless axial height adjustment of the support rods and provides vertical auxiliary support for the telescopic structure through a rigid contact surface. The innovatively added support components, through multi-point coupling contact between the support petals and the annular clamp, form a composite mechanical transmission network based on the original single-path force distribution. This allows the device to maintain its original adjustment function while gaining multi-directional redundant support capability, significantly improving the strength attenuation defects caused by force concentration in traditional independent support structures. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention in use.

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 3 This is a three-dimensional structural diagram of a single support rod;

[0015] Figure 4 A three-dimensional structural diagram of the main rod;

[0016] Figure 5 A schematic diagram of the semi-sectional three-dimensional structure of the main body;

[0017] Figure 6 A three-dimensional structural diagram of the connecting components and the insertion plate;

[0018] Figure 7 This is a three-dimensional structural diagram of the connecting components;

[0019] Figure 8 This is a three-dimensional structural diagram of the insertion rod;

[0020] Figure 9 This is a three-dimensional structural diagram of the telescopic pole;

[0021] Figure 10 A three-dimensional structural diagram of the telescopic rod and extension support assembly;

[0022] Figure 11 A three-dimensional structural diagram of the extended support components;

[0023] Figure 12 This is a schematic diagram of the half-section three-dimensional structure of the ring-shaped component;

[0024] Figure 13 This is a schematic diagram of a half-section three-dimensional structure of a single support rod.

[0025] In the diagram: 1-Single support rod; 3-Main rod; 3-1-Main pipe; 3-11-Strip hole; 3-12-External thread; 3-2-Support seat one; 3-3-Ring clip; 4-Telescopic rod; 4-1-Telescopic rod body; 4-2-Support seat two; 4-21-Adjustment hole; 4-22-Round insertion hole; 5-Extended support assembly; 5-1-Operating rod; 5-2-U-shaped connecting rod; 5-3-Ring piece; 5-4-Extrusion tube; 5-6-Handle; 5-5-Support petal; 6-Internal threaded ring; 7-Insertion rod; 7-1-L-shaped insert; 7-2-Threaded piece; 2-Connecting assembly; 2-1-Balance rod; 2-2-Insertion; 9-Insertion plate; 91-Insertion hole; 8-Wall. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] Specific implementation method one: Combining Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13This embodiment describes a three-bar support structure for the post-cast strip, comprising three individual support rods 1, six connecting components 2, and six insert plates 9. The three individual support rods 1 form a triangular array, with each group of three individual support rods 1 arranged vertically side-by-side in an equilateral triangular array. Each individual support rod 1 occupies one end position of the triangular array, and each individual support rod 1 has an insert plate 9 at both ends. A connecting component 2 is provided between each pair of adjacent insert plates 9. Each individual support rod 1 includes a main rod 3, a telescopic rod 4, an extension support assembly 5, an internal threaded ring 6, and an insert rod 7. The telescopic rod 4 passes through the upper end of the main rod 3, and the extension support assembly 5 passes through the telescopic rod 4. The extension support assembly 5 passes through the main rod 3. The internal threaded ring 6 is threadedly connected to the upper end of the main rod 3. The insert rod 7 passes through the main rod 3, the telescopic rod 4, and the extension support assembly 5 in sequence. The main rod 3 includes a main pipe 3-1, a support seat 3-2, and several annular clips 3-3. One end of the main pipe 3-1 is provided with the support seat 3-2. 2. The outer wall of the other end of the main pipe 3-1 is provided with an external thread 3-12, which is threaded to the internal thread ring 6. The inner wall of the main pipe 3-1 is provided with several annular clips 3-3 along its length. The main pipe 3-1 is machined with a strip hole 3-11 along its thickness, and an insert rod 7 is inserted into the strip hole 3-11. The extension support assembly 5 includes an operating rod 5-1, a U-shaped connecting rod 5-2, an annular piece 5-3, a compression tube 5-4, a handle 5-6, and multiple support petals 5-5. The telescopic rod 4 is located along its thickness. A handle 5-6 is inserted through the telescopic rod 4. The handle 5-6 is located at one end of the operating rod 5-1. A U-shaped connecting rod 5-2 is located at the other end of the operating rod 5-1. A compression tube 5-4 is installed on the U-shaped connecting rod 5-2. An annular piece 5-3 is inserted through the telescopic rod 4. The annular piece 5-3 is fixedly connected to the telescopic rod 4 to form a whole. Multiple support petals 5-5 are arranged around the end of the compression tube 5-4. The compression tube 5-4 is fitted onto the multiple support petals 5-5. The ends of the support petals 5-5 are attached to the annular clip 3-3.

[0028] When the handle 5-6 is pressed down, the handle 5-6 is linked to the operating rod 5-1 and the U-shaped connecting rod 5-2, driving the extrusion tube 5-4 to move downward axially. During the downward movement, the extrusion tube 5-4 applies radial inward pressure to the four circumferentially distributed support petals 5-5, causing each support petal 5-5 to retract synchronously. The outer diameter of the retracted petals is smaller than the inner diameter of the annular clamp 3-3. At this time, the telescopic rod 4, together with the added support assembly 5, can slide freely axially within the cavity of the main tube 3-1, achieving height adjustment. After adjustment to the desired position, the handle 5-6 is pulled upward, and the extrusion tube 5-4 releases the constraint on the support petals 5-5. Under its own elasticity, the ends of each support petal 5-5 expand radially, and their outer edges embed into the grooves between adjacent annular clamps 3-3, forming a reliable limit. At this time, the lower end face of the support petal 5-5 and the upper end face of the annular clamp 3-3 form an axial support pair, providing a stable vertical load-bearing point for the telescopic rod 4.

[0029] Specific Implementation Method Two: This implementation method is a further limitation of Specific Implementation Method One. The telescopic rod 4 includes a telescopic rod body 4-1 and a support base 4-2. One end of the telescopic rod body 4-1 is provided with the support base 4-2, and the other end of the telescopic rod body 4-1 is provided with an extension support component 5. The telescopic rod body 4-1 is inserted into the main tube 3-1. An adjustment hole 4-21 is machined on the telescopic rod body 4-1 along its thickness direction. A handle 5-6 is inserted into the adjustment hole 4-21. Multiple circular insertion holes 4-22 are machined on the telescopic rod body 4-1 along its length direction. An insertion rod 7 is inserted into the circular insertion holes 4-22. An annular component 5-3 is fixedly installed inside the telescopic rod body 4-1.

[0030] The insertion rod 7 is inserted into the circular insertion hole 4-22, which serves to limit the telescopic rod body 4-1 and prevent the telescopic rod body 4-1 from continuing to retract into the main pipe 3-1.

[0031] Specific implementation method three: This implementation method is a further limitation of specific implementation method one or two. The insertion rod 7 includes an L-shaped plug 7-1 and a threaded part 7-2. One end of the L-shaped plug 7-1 passes through the strip hole 3-11 and the circular insertion hole 4-22 in sequence. One end of the L-shaped plug 7-1 is threadedly connected to the threaded part 7-2.

[0032] The L-shaped insert 7-1 and the threaded part 7-2 can be spliced ​​into a U-shape so that the insert 7 will not fall off after passing through the main rod 3 and the telescopic rod 4.

[0033] Specific implementation method four: This implementation method is a further limitation of specific implementation methods one, two or three. Each connecting component 2 includes a balance bar 2-1 and two plugs 2-2. A plug 2-2 is provided at each end of the balance bar 2-1, and the plug 2-2 passes through the corresponding plug plate 9.

[0034] Two plugs 2-2 are inserted into different plug plates 9 to connect the single support rod 1.

[0035] Specific implementation method five: This implementation method is a further limitation of specific implementation methods one, two, three or four. Each plug-in plate 9 is provided with a number of plug holes 91 along its circumference, and the plug-in 2-2 is plugged into a plug hole 91 corresponding to its position.

[0036] The depth of several sockets 91 is in the same direction as the thickness of the insert plate 9. The position of several sockets 91 is set so that the plug-in 2-2 can be inserted from different angles, thereby realizing the connection of the three single support rods 1.

[0037] Working principle:

[0038] The present invention is placed between two walls 8, and by rotating the internal threaded ring 6, it can be precisely displaced axially to the set position; then, the insertion rod 7 is inserted through the strip hole 3-11 and the telescopic rod 4 to achieve axial limitation. When the telescopic rod 4 retracts into the main pipe 3-1, the handle 5-6 is pressed down, and through the linkage transmission of the operating rod 5-1 and the U-shaped connecting rod 5-2, the extrusion tube 5-4 is driven to descend vertically. During the descent of the extrusion tube 5-4, a radial contracting force is applied to the multiple support petals 5-5, so that their encircling diameter is smaller than the inner diameter of the annular clamp 3-3. At this time, the telescopic rod 4, together with the reinforcing support assembly 5, can slide freely within the main pipe 3-1.

[0039] After the height adjustment is complete, lift the handle 5-6 to release the constraint of the extrusion tube 5-4 on the support petal 5-5. The end of the support petal 5-5 expands radially under the elastic reset action and locks into the gap of the adjacent annular clamp 3-3. At this time, the insertion rod 7 and the internal threaded ring 6 form a rigid support node, while the support petal 5-5 and the annular clamp 3-3 constitute a multi-level mechanical limiting structure. The two work together to significantly improve the axial load-bearing capacity and effectively overcome the defect of insufficient support strength caused by the single force path in traditional threaded connections.

Claims

1. A three-bar support for post-cast strips, characterized in that: It includes three individual support rods (1), six connecting components (2) and six insert plates (9). The three individual support rods (1) are arranged vertically side by side and arranged in a triangular array. Each individual support rod (1) has an insert plate (9) at both ends and a connecting component (2) is provided between two adjacent insert plates (9). Each individual support rod (1) includes a main rod (3), a telescopic rod (4), an extension support assembly (5), an internal threaded ring (6), and a plug rod (7). The upper end of the main rod (3) is provided with the telescopic rod (4), and the extension support assembly (5) is provided inside the telescopic rod (4). The extension support assembly (5) is provided inside the main rod (3). The internal threaded ring (6) is threaded to the upper end of the main rod (3). The plug rod (7) is passed through the main rod (3), the telescopic rod (4), and the extension support assembly (5) in sequence.

2. The three-bar support for post-cast strips according to claim 1, characterized in that: The main rod (3) includes a main tube (3-1), a support seat (3-2) and several ring-shaped clips (3-3). One end of the main tube (3-1) is provided with a support seat (3-2), and the outer wall of the other end of the main tube (3-1) is provided with an external thread (3-12). The external thread (3-12) is threadedly connected to the internal thread ring (6). The inner wall of the main tube (3-1) is provided with several ring-shaped clips (3-3) along its length direction. The main tube (3-1) is machined with a strip hole (3-11) along its thickness direction. A rod (7) is inserted through the strip hole (3-11).

3. The three-bar support for post-cast strips according to claim 2, characterized in that: The extension support assembly (5) includes an operating rod (5-1), a U-shaped connecting rod (5-2), an annular piece (5-3), a compression tube (5-4), a handle (5-6), and multiple support petals (5-5). The telescopic rod (4) has a handle (5-6) inserted along its thickness direction. The handle (5-6) is located at one end of the operating rod (5-1). The other end of the operating rod (5-1) is provided with a U-shaped connecting rod (5-2). The compression tube (5-4) is provided on the U-shaped connecting rod (5-2). The annular piece (5-3) is inserted inside the telescopic rod (4). The annular piece (5-3) is fixedly connected to the telescopic rod (4) to form a whole. Multiple support petals (5-5) are provided at the end of the compression tube (5-4) along its circumference. The compression tube (5-4) is fitted onto the multiple support petals (5-5). The ends of the support petals (5-5) are attached to the annular clip (3-3).

4. The three-bar support for post-cast strips according to claim 2, characterized in that: The telescopic rod (4) includes a telescopic rod body (4-1) and a support seat (4-2). The support seat (4-2) is provided at one end of the telescopic rod body (4-1), and an extension support assembly (5) is provided at the other end of the telescopic rod body (4-1). The telescopic rod body (4-1) is inserted into the main tube (3-1). An adjustment hole (4-21) is machined on the telescopic rod body (4-1) along its thickness direction. A handle (5-6) is inserted into the adjustment hole (4-21). Multiple circular insertion holes (4-22) are machined on the telescopic rod body (4-1) along its length direction. An insertion rod (7) is inserted into the circular insertion hole (4-22). A ring-shaped part (5-3) is fixedly installed inside the telescopic rod body (4-1).

5. The three-bar support for post-cast strips according to claim 4, characterized in that: The insert (7) includes an L-shaped insert (7-1) and a threaded part (7-2). One end of the L-shaped insert (7-1) passes through the strip hole (3-11) and the circular insertion hole (4-22) in sequence, and the other end of the L-shaped insert (7-1) is threadedly connected to the threaded part (7-2).

6. The three-bar support for post-cast strips according to claim 1, characterized in that: Each connecting component (2) includes a balance bar (2-1) and two plugs (2-2). A plug (2-2) is provided at each end of the balance bar (2-1), and the plug (2-2) is inserted into the corresponding plug plate (9).

7. The three-bar support for post-cast strips according to claim 1, characterized in that: Each plug pad (9) has several sockets (91) arranged around its circumference, and the plug (2-2) is inserted into the socket (91) corresponding to its position.

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