Supporting rod bottom connecting rod and formwork supporting structure for concrete pouring

Abstract

The application discloses a support rod bottom connecting rod and a formwork support structure for concrete pouring, which comprises a length-adjustable rod body, the bottom of the rod body is provided with a plug-in rod which is slidably inserted into the rod body, a first elastic member is arranged between the plug-in rod and the rod body, and the load on the rod body is conducted to the plug-in rod through the first elastic member; the plug-in rod is provided with a first mark, and the rod body is provided with a second mark at the position corresponding to the first mark, so as to display the relative position of the plug-in rod and the rod body. According to the application, the relative position of the first mark and the second mark is observed, and the force bearing condition of each support rod can be known by the inspection personnel in time, so that the force bearing condition of the support rod can be adjusted in time, the force bearing is uniform, the construction safety is ensured, the reserved amount of safety reserve can be greatly reduced, and the workloads of support workers and design workers are reduced.

Description

Technical Field

[0001] This invention relates to the field of formwork support technology, and in particular to a bottom connecting rod of a support rod and a formwork support structure for concrete pouring. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] In the process of concrete pouring, formwork supports are an indispensable part. Their core function is to support the formwork, bear the construction load, and ensure that the concrete maintains its designed shape, size and position during the pouring and hardening stages, while also ensuring construction safety.

[0004] As a temporary structure bearing the load of concrete pouring, the stability of the formwork support system is directly related to construction safety. However, in actual operation, due to various reasons, such as the steel pipes being bent and substandard, the foundation not being properly compacted and leveled, the bottom pads or plates being squeezed and deformed, and foundation settlement and deformation, the overall stress of the support system will be uneven, resulting in a pressure displacement effect. This will cause some support rods to be under less stress, while others will be overloaded, eventually causing some support rods to fail. In a statically indeterminate support system, the failure of a single support rod will trigger a chain reaction of load redistribution, leading to the instantaneous collapse of the entire support system.

[0005] To address the aforementioned issues, existing technologies typically incorporate sufficient safety margins (i.e., increasing the number and density of support rods) during the design phase. However, this undoubtedly increases the workload for both designers and construction workers, and the possibility of insufficient safety margins cannot be ruled out. Furthermore, for large-span concrete formwork, since the concrete needs to reach 75% to 100% of its design strength before formwork removal, some support systems may require 28 days or even longer to dismantle. During such extended periods of stress support, if the foundation is not hardened, the bottom of the support rods is highly susceptible to settlement, leading to uneven stress distribution and deformation of the concrete structure. These uneven stress distributions and settlement changes are extremely difficult for inspection personnel to detect in a timely manner, making timely adjustments during the inspection phase challenging. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a support structure for the bottom connecting rods of the support rods and the formwork support structure for concrete pouring that can significantly reduce the safety reserve and conveniently remind inspection personnel of the stress status of each support rod.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A bottom connecting rod of a support rod includes a rod body with an adjustable length, and a plug rod at the bottom of the rod body that is slidably inserted into the rod body. A first elastic element is provided between the plug rod and the rod body, and the load on the rod body is transmitted to the plug rod through the first elastic element. The plug rod is provided with a first mark, and the rod body is provided with a second mark at the position corresponding to the first mark, which is used to display the current relative position of the plug rod and the rod body.

[0008] Furthermore, of the first and second marks, one is a warning color band and the other is an indicator mark, indicating the current force condition; The warning color bands include three color bands that are arranged vertically and are different in color: a no-force warning color band, a normal warning color band, and an overload warning color band. When under no stress, the indicator mark moves to the no-stress warning color band; when under normal stress, the indicator mark moves to the normal warning color band; when under overload stress, the indicator mark moves to the overload warning color band.

[0009] Furthermore, the indicator mark includes an indicator groove, and the upper and lower parts of the indicator groove have sleeves for covering the warning color band, so that the corresponding warning color band can be observed through the indicator groove.

[0010] Furthermore, the stress-free warning strip and the overload warning strip are reflective strips and / or have fluorescent materials on their surfaces.

[0011] Furthermore, the stress-free warning strip and the overload warning strip are respectively made of luminescent material.

[0012] Furthermore, by using different fluorescent materials to make the stress warning strip and the overload warning strip respectively, the different fluorescent materials emit different visible light after irradiation.

[0013] Furthermore, of the first and second marks, one is a vertical scale and the other is an indicator mark, which is used to indicate the relative position of the current plug rod and the rod body.

[0014] Furthermore, the plug rod is hollow inside, and a support for placing the first elastic element is provided between the plug rod and the rod body. The plug rod can support the bottom of the support. A pressure plate is provided at the position of the first elastic element on the rod body to transfer the load on the rod body to the first elastic element. The bottom of the support is provided with a cylindrical body, and a second elastic element is provided between the bottom of the support and the plug rod. The second elastic element is used to push the support to move away from the plug rod. An extension rod is slidably disposed inside the cylinder. One end of the extension rod can pass through the bottom of the plug-in rod. A third elastic element is provided between the extension rod and the cylinder to push the extension rod to move towards the bottom of the plug-in rod. The bottom of the plug-in rod has a guide channel adapted to the extension rod. At least one groove is opened on the outer side of the extension rod. A slider is slidably disposed in the groove. A fourth elastic element is provided between the slider and the groove. The fourth elastic element is used to push one end of the slider out of the groove. The bottom surface of the slider has an inclined surface, which is used to squeeze the slider by contacting the top of the guide channel when moving towards the direction of the guide channel, so that the slider retracts into the groove. When the first elastic element is placed on the support, the pressure plate squeezes the first elastic element to make the support move down, and the bottom of the cylinder contacts the top of the guide channel. After the bottom of the extension rod is subjected to force, it can move from the guide channel into the inside of the cylinder until the bottom of the extension rod is flush with the bottom of the insertion rod. When the support is unloaded, there is a gap between the pressure plate and the support. Under the action of the second elastic element, the support moves upward. There is a gap between the bottom of the cylinder and the top of the guide channel. After the bottom of the extension rod is subjected to force, it can move from the guide channel towards the cylinder. When it passes through the gap, the slider is pushed out of the groove under the action of the fourth elastic element and abuts against the bottom of the cylinder. The bottom of the extension rod always remains in the state of penetrating the bottom of the plug rod.

[0015] Furthermore, the rod body includes a first rod and a second rod, with a first thread at one end of the first rod and the second rod facing each other, and also includes a third rod located between the first rod and the second rod, with second threads at both ends of the third rod adapted to the direction of the first thread, and rotating the third rod can control the distance between the first rod and the second rod.

[0016] A formwork support structure for concrete pouring includes multiple support rods, and the bottom of each support rod is connected to a support rod bottom connecting rod as described in any of the above claims.

[0017] The beneficial effects of this invention are reflected in: This invention allows inspection personnel to promptly understand the stress on each support rod by observing the relative positions of the first and second marks. This enables them to adjust the stress on the support rods in a timely manner, ensuring uniform stress distribution and construction safety. Consequently, the required safety reserve can be significantly reduced, thereby decreasing the workload of scaffolding workers and design workers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the bottom connecting rod of the support rod described in this invention; Figure 2 This is a schematic diagram of the structure of the plug-in rod described in this invention; Figure 3This is a half-sectional view of the bottom connecting rod of the support rod described in this invention. Figure 4 for Figure 3 Enlarged view at point A in the middle; Figure 5 This is a schematic diagram of the "Z"-shaped groove described in this invention.

[0019] In the picture: 1. Rod body; 11. Second mark; 12. Pressure plate; 13. "Z" shaped groove; 14. First rod; 15. Second rod; 16. Third rod; 17. Nut; 2. Connecting rod; 21. First mark; 211. No-stress indicator strip; 212. Normal indicator strip; 213. Overload indicator strip; 22. Support; 23. Cylinder; 24. Second elastic element; 25. Extending rod; 251. Slider; 26. Third elastic element; 27. Guide channel; 28. Sliding protrusion; 29. ​​Support base plate; 3. First elastic element. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please see Figure 1-5 The present invention discloses a bottom connecting rod of a support rod, including a rod body 1 with adjustable length, and a plug rod 2 at the bottom of the rod body 1 that is slidably inserted into the rod body 1. A first elastic element 3 is provided between the plug rod 2 and the rod body 1, and the load on the rod body 1 is transmitted to the plug rod 2 through the first elastic element 3. The plug rod 2 is provided with a first mark 21, and the rod body 1 is provided with a second mark 11 at the corresponding position of the first mark 21, which is used to display the current relative position of the plug rod 2 and the rod body 1, and to infer the magnitude of the force based on this.

[0022] In practice, the bottom connecting rod of the support rod serves as a section of the bottom of the support rod, connecting to the bottom of each support rod. The force on the support rod is transmitted to the rod body 1 of the connecting rod, compressing the first elastic element 3 and causing a change in the relative position of the plug-in rod 2 and the rod body 1. At this time, the stress on the support rod can be determined by observing the relative position of the first mark 21 and the second mark 11. If the stress is too large or too small, the relative displacement distance between the first mark 21 and the second mark 11 will be large or small. In this case, the stress on the support rod can be changed by adjusting the length of the rod body 1. By observing the relative position of the first mark 21 and the second mark 11, the inspection personnel can promptly know the stress on each support rod and adjust the stress on the support rod in a timely manner. This allows for a significant reduction in the safety reserve while ensuring construction safety and uniform stress distribution, thereby reducing the workload of scaffolding workers and design workers.

[0023] It should be noted that the specifications of the first elastic element 3 corresponding to each link are consistent, and the compression amount of the first elastic element 3 under various pressures can be obtained through pre-measurement experiments, providing a basis for the worker's judgment.

[0024] Preferably, the first elastic element 3 can be a rubber elastic block or a polyurethane elastic block. Of course, it can also be an airbag, a gas spring (compressed gas is filled in a sealed container, and the spring action is achieved by utilizing the compressibility of the gas), etc. Of course, it can also be other components with greater elasticity in the prior art.

[0025] Preferably, the bottom of the rod body 1 is hollow, and the top of the plug rod 2 is inserted into the rod body 1.

[0026] In one embodiment, of the first mark 21 and the second mark 11, one is a warning color band and the other is an indicator mark, indicating the current force condition.

[0027] Specifically, the warning color band includes three color bands arranged in sequence: a no-force warning color band 211, a normal warning color band 212, and an overload warning color band 213, and the three color bands are different. When under no stress, the indicator mark moves to the no-stress warning color band 211; when under normal stress, the indicator mark moves to the normal warning color band 212; when under overload stress, the indicator mark moves to the overload warning color band 213.

[0028] In practice, inspectors can directly determine the stress on the support rod by observing the color of the warning strip marked on the indicator, which is simple and convenient.

[0029] In one embodiment, the indicator mark includes an indicator slot with sleeves above and below the indicator slot for covering the warning color band, through which the corresponding warning color band can be observed.

[0030] In one embodiment, the stress-free indicator strip 211 and the overload indicator strip 213 are reflective strips and / or have fluorescent materials on their surfaces.

[0031] In practice, workers can use a flashlight or construction site lights to shine on the bottom of the support rod in the evening or at night. If a reflection or fluorescence is found, it indicates that there is a problem with the stress on the support rod. This allows for a quicker identification of support rods with stress problems. It is simple and effective (the rest of the warning strip is covered by the sleeve, and only the warning strip at the indicator groove is exposed).

[0032] In one embodiment, different fluorescent materials can be used to fabricate the unloaded warning strip 211 and the overload warning strip 213 (or the fluorescent material can be coated on the surface of the strips). These different fluorescent materials emit different visible light after illumination (the rest of the warning strip is covered by a sleeve, with only the warning strip portion at the indicator slot exposed). The different visible light allows inspectors to quickly distinguish between overloaded and unloaded support rods.

[0033] It should be noted that fluorescent materials are a class of materials that can absorb light of a specific wavelength and immediately emit visible light of a longer wavelength. The material absorbs high-energy light such as ultraviolet light and blue light, causing the internal electrons to jump from low energy levels to high energy levels. The electrons are unstable at high energy levels and will quickly de-excite and release energy, which is converted into visible light (such as green light and red light, of which the material that emits red light can be fluorescent red 540 and the material that emits green light can be fluorescent green 50). The light emission disappears immediately after the light is removed.

[0034] In one embodiment, the plug rod 2 is hollow inside, and a support 22 for placing the first elastic member 3 is provided between the plug rod 2 and the rod body 1. The plug rod 2 can support the bottom of the support 22 and restrict the support 22 from moving downward. A pressure plate 12 is provided at the position of the first elastic member 3 on the rod body 1 to transfer the load on the rod body 1 to the first elastic member 3. The bottom of the support 22 is provided with a cylindrical body 23 that extends into the interior of the plug rod 2. A second elastic member 24 is provided between the bottom of the support 22 and the interior of the plug rod 2. The second elastic member 24 is used to push the support 22 to move away from the plug rod 2. An extension rod 25 is slidably disposed inside the cylinder 23. One end of the extension rod 25 can pass through the bottom of the plug-in rod 2. A third elastic member 26 is provided between the extension rod 25 and the cylinder 23 to push the extension rod 25 to move towards the bottom of the plug-in rod 2. The bottom of the plug-in rod 2 has a guide channel 27 adapted to the extension rod 25. At least one slide groove is opened on the outer side of the extension rod 25. A slider 251 is slidably disposed in the slide groove. A fourth elastic member is provided between the slider 251 and the slide groove. The fourth elastic member is used to push one end of the slider 251 out of the slide groove. The bottom surface of the slider 251 has an inclined surface, which is used to squeeze the slider 251 by contacting the top of the guide channel 27 when moving towards the direction of the guide channel 27, so that the slider 251 retracts into the slide groove. When the first elastic element 3 is placed on the support 22, the pressure plate 12 squeezes the first elastic element 3 to make the support 22 move down, and the bottom of the cylinder 23 contacts the top of the guide channel 27. After the bottom of the extension rod 25 is subjected to force, it can move from the guide channel 27 into the inside of the cylinder 23 until the bottom of the extension rod 25 is flush with the bottom of the insertion rod 2. When the support 22 is unloaded (i.e., when the first elastic element 3 is not placed), there is a gap between the pressure plate 12 and the support 22 (i.e., the support 22 is not under force, at which time the rod 1 can directly abut against the plug rod 2 or be on the same plane as the bottom of the plug rod 2. Since there are many ways to make the support 22 not under force, they will not be listed here). Under the action of the second elastic element 24, the support 22 moves upward, and there is a gap between the bottom of the cylinder 23 and the top of the guide channel 27. After the bottom of the extension rod 25 is under force, it can move from the guide channel 27 to the cylinder 23. When passing through the gap, the slider 251 is pushed out of the groove under the action of the fourth elastic element and abuts against the bottom of the cylinder 23. The bottom of the extension rod 25 always remains in the state of penetrating the bottom of the plug rod 2. (The fact that the bottom of the cylinder 23 in the diagram does not contact the top of the guide channel 27 and that there is a gap under the support 22 is only an adjustment made for easier viewing. In actual operation, when the first elastic element 3 is present, the bottom of the cylinder 23 is in contact with the top of the guide channel 27, and the plug rod 2 is also in the state of supporting the support 22.) This design allows for a reminder to workers when the first elastic element 3 is not properly inserted into the support 22. The extension rod 25 extends, creating an uneven bottom surface for the connector rod 2, thus alerting the worker (during construction, the bottom of the connector rod 2 must be flat). This prevents some of the first elastic element 3 from being left uninserted into the support 22.

[0035] Preferably, the second elastic element 24, the third elastic element 26 and the fourth elastic element can all be springs.

[0036] Preferably, the bottom of the plug rod 2 has a support base plate 29, and the extension rod 25 can extend to the bottom of the support base plate 29.

[0037] Preferably, it also includes a Z-shaped groove 13 and a sliding protrusion 28. The Z-shaped groove 13 and the sliding protrusion 28 are respectively disposed on the connecting rod and the connector rod 2. The Z-shaped groove 13 is Z-shaped, with the parallel sides of the Z-shape vertically arranged and one end extending downwards. The sliding protrusion 28 slides in conjunction with the Z-shaped groove 13. The connecting rod and the connector rod 2 are connected together through the Z-shaped groove and the sliding protrusion 28, and the first elastic element 3 is compressed in the initial stage. This allows the connecting rod and the connector rod 2 to be assembled in batches in advance, eliminating the need for on-site assembly and saving on-site workload.

[0038] In one embodiment, the rod 1 includes a first rod 14 and a second rod 15, with a first thread at one end of the first rod 14 and the second rod 15 facing each other. It also includes a third rod 16 located between the first rod 14 and the second rod 15, with second threads at both ends of the third rod 16 that are adapted to the first thread. One of the first thread and the second thread is an external thread and the other is an internal thread. The first rod 14, the second rod 15 and the third rod 16 are connected together by the cooperation of the internal and external threads. Furthermore, the distance between the first rod 14 and the second rod 15 can be controlled by rotating the third rod 16, thereby changing the overall length of the rod 1.

[0039] Preferably, the external thread is also threaded with a nut 17. By moving the nut 17 in the direction of the internal thread, the positions of the first rod 14, the second rod 15 and the third rod 16 can be locked.

[0040] Example 2: The difference between this embodiment and Embodiment 1 is that the first mark 21 and the second mark 11 are different, as detailed below: Of the first mark 21 and the second mark 11, one is a vertical scale and the other is an indicator mark, which is used to indicate the relative position of the current plug rod 2 and the rod body 1.

[0041] Example 3: The difference between this embodiment and Embodiment 1 is that the non-stress warning strip 211 and the overload warning strip 213 are made of luminescent material (such as rare earth aluminate luminescent material).

[0042] Specifically, luminescent materials (also known as photoluminescent materials) are functional materials that can absorb and store external light energy such as sunlight and lamplight, and continue to emit light autonomously after the exposure to light stops. Their luminescence time ranges from a few minutes to over ten hours. They are widely used in fire emergency signs, escape route signs, and self-illuminating directional signs after power outages, and are also frequently used in luminescent toys. By incorporating luminescent materials, materials can emit light autonomously at night, allowing inspection personnel to quickly locate and adjust the corresponding support rods when the lights are off.

[0043] Example 4: The present invention also discloses a formwork support structure for concrete pouring, which includes multiple support rods, and the bottom of each support rod is connected to the aforementioned support rod bottom connecting rod.

[0044] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] Additionally, "multiple" refers to two or more.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bottom connecting rod of a support rod, characterized in that, The rod includes an adjustable length rod body, the bottom of which has a plug rod that slides into the rod body, and a first elastic element between the plug rod and the rod body, through which the load on the rod body is transmitted to the plug rod; The plug rod is provided with a first mark, and the rod body is provided with a second mark at the corresponding position of the first mark, which is used to display the current relative position of the plug rod and the rod body; of the first mark and the second mark, one is a warning color band and the other is an indicator mark, indicating the current force condition; The warning color bands include three color bands that are arranged vertically and are different in color: a no-force warning color band, a normal warning color band, and an overload warning color band. When there is no force, the indicator mark moves to the no-force warning color band; when there is force, the indicator mark moves to the normal warning color band. When under overload conditions, the indicator mark moves to the overload warning color band; The plug rod is hollow inside, and a support for placing the first elastic element is provided between the plug rod and the rod body. The plug rod can support the bottom of the support. A pressure plate is provided at the position of the first elastic element on the rod body to transfer the load on the rod body to the first elastic element. The bottom of the support is provided with a cylindrical body, and a second elastic element is provided between the bottom of the support and the plug rod. The second elastic element is used to push the support to move away from the plug rod. An extension rod is slidably disposed inside the cylinder. One end of the extension rod can pass through the bottom of the plug-in rod. A third elastic element is provided between the extension rod and the cylinder to push the extension rod to move towards the bottom of the plug-in rod. The bottom of the plug-in rod has a guide channel adapted to the extension rod. At least one groove is opened on the outer side of the extension rod. A slider is slidably disposed in the groove. A fourth elastic element is provided between the slider and the groove. The fourth elastic element is used to push one end of the slider out of the groove. The bottom surface of the slider has an inclined surface, which is used to squeeze the slider by contacting the top of the guide channel when moving towards the direction of the guide channel, so that the slider retracts into the groove. When the first elastic element is placed on the support, the pressure plate squeezes the first elastic element to make the support move down, and the bottom of the cylinder contacts the top of the guide channel. After the bottom of the extension rod is subjected to force, it can move from the guide channel into the inside of the cylinder until the bottom of the extension rod is flush with the bottom of the insertion rod. When the support is unloaded, there is a gap between the pressure plate and the support. Under the action of the second elastic element, the support moves upward. There is a gap between the bottom of the cylinder and the top of the guide channel. After the bottom of the extension rod is subjected to force, it can move from the guide channel towards the cylinder. When it passes through the gap, the slider is pushed out of the groove under the action of the fourth elastic element and abuts against the bottom of the cylinder. The bottom of the extension rod always remains in the state of penetrating the bottom of the plug rod.

2. The bottom connecting rod of the support rod according to claim 1, characterized in that, The indicator mark includes an indicator slot, and the upper and lower parts of the indicator slot have sleeves for covering the warning color band, so that the corresponding warning color band can be observed through the indicator slot.

3. The bottom connecting rod of the support rod according to claim 2, characterized in that, The non-stress warning strip and the overload warning strip are reflective strips and / or have fluorescent materials on their surfaces.

4. The bottom connecting rod of the support rod according to claim 2, characterized in that, The stress-free warning strip and the overload warning strip are made of luminescent material.

5. The bottom connecting rod of the support rod according to claim 2, characterized in that, By using different fluorescent materials on the unloaded warning strip and the overload warning strip, the different fluorescent materials emit different visible light after irradiation.

6. The bottom connecting rod of the support rod according to claim 1, characterized in that, Of the first and second marks, one is a vertical scale and the other is an indicator mark, which is used to indicate the relative position of the current plug rod and the rod body.

7. The bottom connecting rod of the support rod according to any one of claims 1 to 6, characterized in that, The rod body includes a first rod and a second rod, with a first thread at one end of the first rod and the second rod facing each other. It also includes a third rod located between the first rod and the second rod, with second threads at both ends of the third rod that are adapted to the first thread. Rotating the third rod controls the distance between the first rod and the second rod.

8. A formwork support structure for concrete pouring, characterized in that, It includes multiple support rods, and the bottom of each support rod is connected to a support rod bottom connecting rod as described in any one of claims 1-7.

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