Bending-resistant screw

Abstract

The utility model discloses an anti-bending screw which comprises a screw body, the inner wall of the screw body is fixedly connected with a truss mechanism, the right-angle position of the truss mechanism is fixedly connected with a slope table, a rubber pad is placed on the top of the slope table, a countersunk bolt penetrates through the top of the rubber pad, and the countersunk bolt is in threaded connection with a cross-shaped rib plate. The top of the rubber pad is fixedly connected with a truss mechanism, the truss mechanism is fixedly connected with the inner wall of the screw main body, the inner surface of the truss mechanism is fixedly connected with an anti-buckling supporting assembly, the truss mechanism comprises a vertical rod, an upper chord and a lower chord, the vertical rod is fixedly connected to the top of the rubber pad, and the upper chord is fixedly connected to one side of the vertical rod. And the other side of the upper chord member is fixedly connected with the other vertical rod. According to the utility model, local deformation and even bending damage of the screw rod under bending moment can be prevented, and external load can be prevented from being concentrated on local parts, so that the reliability when the pressure in concrete is higher is improved.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a bending-resistant screw. Background Technology

[0002] In building construction, when screw rods are used to support concrete pouring formwork, they mainly fix the position of the formwork by bearing the lateral pressure generated by concrete pouring, resisting formwork deformation, preventing formwork bursting, and ensuring that the formwork maintains its designed shape and size during the pouring process, thereby ensuring the molding quality of concrete components.

[0003] However, traditional screws are mostly single solid structures, which are prone to local deformation or even bending failure when subjected to bending moment. They are difficult to cope with complex loads, lack load distribution design, and external loads are concentrated on local areas, which can easily lead to screw breakage due to stress peaks. In particular, their reliability is low when the lateral pressure of concrete is large. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bending-resistant screw.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bending-resistant screw includes a screw body, a truss mechanism fixedly connected to the inner wall of the screw body, a buckling-resistance support component fixedly connected to the inner surface of the truss mechanism, an inclined platform fixedly connected at the right angle of the truss mechanism, a rubber pad placed on the top of the inclined platform, and a countersunk bolt passing through the top of the rubber pad.

[0007] As a further improvement of this utility model: the countersunk bolt and the cross-shaped rib are connected by threads, and a truss mechanism is fixedly connected to the top of the rubber pad, and the truss mechanism is fixedly connected to the inner wall of the screw body.

[0008] As a further embodiment of this utility model: the truss mechanism includes a vertical rod, an upper chord, and a lower chord, and the vertical rod is fixedly connected to the top of the rubber pad.

[0009] As a further embodiment of this utility model: the upper chord is fixedly connected to one side of the vertical rod, and the other side of the upper chord is fixedly connected to another vertical rod.

[0010] As a further embodiment of this utility model: the lower chord is fixedly connected to one side of the vertical rod, and the other side of the lower chord is fixedly connected to another vertical rod, and the vertical rod, upper chord and lower chord are arranged in more than three arrays towards the other end.

[0011] As a further embodiment of this utility model: the buckling bracing assembly includes a steel pipe, an inclined plate, a node plate, and a brass sheet, and the node plate is fixedly connected to the top of the lower chord.

[0012] As a further embodiment of this utility model: the node plate is fixedly connected to the vertical rod, an inclined plate is fixedly connected to the outer surface of the node plate, a steel pipe is sleeved on the outer wall of the inclined plate, three or more brass pieces are fixed on the inner wall of the steel pipe, and the gap between the steel pipe and the inclined plate is filled with concrete, and the inclined plate is fixedly connected to the upper chord.

[0013] Compared with the prior art, this utility model provides a bending-resistant screw, which has the following beneficial effects:

[0014] 1. This type of bend-resistant screw rod is used in construction to support concrete pouring formwork. The screw rod body is installed in the formwork support system, and then connected to the cross-shaped rib plate via countersunk bolts passing through rubber pads. During concrete pouring, the lateral pressure and equipment load received by the formwork are transferred to the screw rod body. The truss mechanism first disperses the stress, evenly distributing the load through its own frame structure. When the screw rod body is subjected to bending moment, the buckling-resistance bracing component limits the local deformation of the screw rod body, preventing buckling failure due to stress concentration. If the screw rod body bends under external force... The truss structure resists deformation with its rigid frame, while the buckling-restrained brace consumes energy through internal constraints, inhibiting bending development. The rubber pad buffers vibrations and absorbs high-frequency stress impacts during stress, reducing direct impacts on the screw body and truss structure and extending its service life. Thus, the truss structure distributes the load, the buckling-restrained brace restricts local deformation, and significantly improves the bending resistance of the screw body. At the same time, the rubber pad, in conjunction with the inclined platform, absorbs construction vibrations and impact loads through elastic deformation, reducing the risk of stress mutation damage to the screw, which is especially suitable for the dynamic load environment during concrete pouring.

[0015] 2. This type of bending-resistant screw, when the screw body is subjected to external load, first acts on the rubber pad. After the rubber pad buffers part of the energy through elastic deformation, it transfers the load to the vertical rod fixedly connected to it. The vertical rod bears the force transferred by the rubber pad and distributes the load to the upper chord and lower chord. The upper chord and lower chord diffuse the load to both ends through their own axial force. Since the vertical rod, upper chord, and lower chord are arranged in an array of three or more, the load will be repeatedly transferred and dispersed in the array structure, eventually distributing the concentrated load evenly to the entire truss mechanism and screw body, avoiding local overload. Thus, when the screw body is subjected to bending moment, the upper chord is under compression and the lower chord is under tension, forming a force couple to balance the bending moment, improving the bending resistance of the screw body. Furthermore, the array distribution expands the load dispersion range and load dispersion path, ensuring the overall stability of the structure.

[0016] 3. This type of anti-bending screw, when the load borne by the truss mechanism is transmitted to the node plate through the lower chord and vertical members, the node plate receives and integrates the mechanical action of the truss mechanism. The inclined plate on the outer surface of the node plate receives the force transmitted by the node plate and tends to deform. At this time, the steel pipe begins to play a restraining role, showing excessive deformation of the inclined plate. The brass sheet on the inner wall of the steel pipe contacts the inclined plate and consumes some energy through friction, suppressing the local buckling of the inclined plate. At the same time, the concrete filling layer further restrains the deformation of the inclined plate through rigid support. Thus, the local buckling deformation of the inclined plate under stress is significantly suppressed, thereby improving the buckling-resistance bracing component's ability to limit the deformation of the truss mechanism, ensuring the overall mechanical performance stability of the truss mechanism. Meanwhile, the brass sheet converts some mechanical energy into heat energy for dissipation, reducing structural vibration response, reducing energy transfer of the truss mechanism, and improving the structure's impact resistance.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a front view of a bending-resistant screw proposed in this utility model;

[0019] Figure 2 This is a cross-sectional view of a bending-resistant screw proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of a bending-resistant screw truss mechanism proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the anti-bending support component in a bending-resistant screw according to the present invention.

[0022] Figure 5 This is an exploded view of the anti-bending support component in an anti-bending screw proposed in this utility model.

[0023] In the diagram: 1. Screw body; 2. Countersunk bolt; 3. Rubber pad; 4. Inclined platform; 5. Cross-shaped rib; 6. Truss mechanism; 7. Buckling-restrained brace assembly; 601. Vertical member; 602. Upper chord; 603. Lower chord; 701. Steel pipe; 702. Inclined plate; 703. Node plate; 704. Brass sheet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] A type of bend-resistant screw, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a screw body 1, a truss mechanism 6 fixedly connected to the inner wall of the screw body 1, a ramp 4 fixedly connected at the right angle of the truss mechanism 6, a rubber pad 3 placed on the top of the ramp 4, a countersunk bolt 2 passing through the top of the rubber pad 3, and the countersunk bolt 2 being threadedly connected to the cross-shaped rib plate 5. The truss mechanism 6 is fixedly connected to the top of the rubber pad 3, and the truss mechanism 6 is fixedly connected to the inner wall of the screw body 1. A buckling-resistance support assembly 7 is fixedly connected to the inner surface of the truss mechanism 6.

[0028] In building construction, when it is necessary to use a bending-resistant screw to support the concrete pouring formwork, the screw body 1 is installed in the formwork support system, and then the countersunk bolt 2 passes through the rubber pad 3 and is threaded to the cross-shaped rib plate 5.

[0029] Then, during concrete pouring, the lateral pressure and equipment load received by the formwork are transferred to the main body 1 of the screw. The truss mechanism 6 first disperses the stress and distributes the load evenly through its own frame structure. When the main body 1 of the screw is subjected to bending moment, the buckling brace component 7 restricts the local deformation of the main body 1 of the screw and avoids the failure of the bending disc due to stress concentration.

[0030] If the main body 1 of the screw tends to bend under external force, the truss mechanism 6 resists the deformation with its rigid frame. At the same time, the buckling-resistance brace 7 consumes energy through internal constraints, inhibiting the development of bending. The rubber pad 3 buffers vibration and absorbs high-frequency stress impact during the stress process, reducing the direct impact on the main body 1 of the screw and the truss mechanism 6 and extending its service life. Thus, the truss mechanism 6 distributes the load, and the buckling-resistance brace 7 restricts local deformation, greatly improving the bending resistance of the main body 1 of the screw. At the same time, the rubber pad 3 cooperates with the inclined platform 4 to absorb construction vibration and impact load through elastic deformation, reducing the risk of stress change damage to the screw. It is especially suitable for the dynamic load environment during concrete pouring.

[0031] To distribute the load and avoid stress concentration, such as Figure 3 As shown, the truss mechanism 6 includes a vertical rod 601, an upper chord 602, and a lower chord 603. The vertical rod 601 is fixedly connected to the top of the rubber pad 3. The upper chord 602 is fixedly connected to one side of the vertical rod 601, and the other side of the upper chord 602 is fixedly connected to another vertical rod 601. The lower chord 603 is fixedly connected to one side of the vertical rod 601, and the other side of the lower chord 603 is fixedly connected to another vertical rod 601. The vertical rod 601, the upper chord 602, and the lower chord 603 are arranged in more than three arrays towards the other end.

[0032] When the screw body 1 is subjected to an external load, it first acts on the rubber pad 3. After the rubber pad 3 buffers part of the energy through elastic deformation, it transmits the load to the vertical rod 601 that is fixedly connected to it. The vertical rod 601 bears the force transmitted by the rubber pad 3.

[0033] The vertical member 601 distributes the load to the upper chord 602 and the lower chord 603. The upper chord 602 and the lower chord 603, through their own axial force, diffuse the load to both ends. Since the vertical member 601, the upper chord 602, and the lower chord 603 are arranged in an array of more than three, the load will be repeatedly transferred and dispersed in the array structure, eventually distributing the concentrated load evenly to the entire truss mechanism 6 and the screw body 1, avoiding local overload. Thus, when the screw body 1 is subjected to bending moment, the upper chord 602 is under compression and the lower chord 603 is under tension, forming a force couple to balance the bending moment, improving the bending resistance of the screw body 1. Furthermore, the array distribution expands the load dispersion range and load dispersion path, ensuring the overall stability of the structure.

[0034] To limit local deformation of truss mechanism 6, such as Figure 4 and Figure 5As shown, the buckling-resistance bracing assembly 7 includes a steel pipe 701, an inclined plate 702, a node plate 703, and brass sheets 704. The node plate 703 is fixedly connected to the top of the lower chord 603 and is also fixedly connected to the vertical member 601. An inclined plate 702 is fixedly connected to the outer surface of the node plate 703. The steel pipe 701 is fitted onto the outer wall of the inclined plate 702. Three or more brass sheets 704 are fixed to the inner wall of the steel pipe 701. The gap between the steel pipe 701 and the inclined plate 702 is filled with concrete. The inclined plate 702 is fixedly connected to the upper chord 602.

[0035] When the load borne by the truss mechanism 6 is transmitted to the node plate 703 through the lower chord 603 and the vertical member 601, the node plate 703 receives and integrates the mechanical action of the truss mechanism 6. The inclined plate 702 on the outer surface of the node plate 703 receives the force transmitted by the node plate 703 and tends to deform. At this time, the steel pipe 701 begins to play a restraining role, showing that the inclined plate 702 is over-deformed.

[0036] The brass sheet 704 on the inner wall of the steel pipe 701 contacts the inclined plate 702, and consumes some energy through friction, thus suppressing the local buckling of the inclined plate 702. At the same time, the concrete filling layer further constrains the deformation of the inclined plate 702 through rigid support. As a result, the local buckling deformation of the inclined plate 702 under stress is significantly suppressed, which enhances the deformation restriction capability of the buckling-resistance brace assembly 7 on the truss mechanism 6, ensuring the overall mechanical performance stability of the truss mechanism 6. Meanwhile, the brass sheet 704 converts some mechanical energy into heat energy for dissipation, reduces structural vibration response, reduces energy transfer of the truss mechanism 6, and improves the structure's impact resistance.

[0037] Working principle: In building construction, when it is necessary to use the bending-resistant screw rod to support the concrete pouring formwork, the screw rod body 1 is installed in the formwork support system, and then the countersunk bolt 2 passes through the rubber pad 3 and is threaded to the cross-shaped rib plate 5.

[0038] Then, during concrete pouring, the lateral pressure and equipment load received by the formwork are transferred to the main body 1 of the screw. The truss mechanism 6 first disperses the stress and distributes the load evenly through its own frame structure. When the main body 1 of the screw is subjected to bending moment, the buckling brace component 7 restricts the local deformation of the main body 1 of the screw and avoids the failure of the bending disc due to stress concentration.

[0039] If the screw body 1 tends to bend under external force, the truss mechanism 6 resists deformation with its rigid frame. At the same time, the buckling-resistance support component 7 dissipates energy through internal constraints, inhibiting the development of bending. The rubber pad 3 buffers vibration and absorbs high-frequency stress impact during the stress process, reducing direct impact on the screw body 1 and the truss mechanism 6 and extending their service life.

[0040] When the screw body 1 is subjected to an external load, it first acts on the rubber pad 3. After the rubber pad 3 buffers part of the energy through elastic deformation, it transmits the load to the vertical rod 601 that is fixedly connected to it. The vertical rod 601 bears the force transmitted by the rubber pad 3.

[0041] The vertical member 601 distributes the load to the upper chord 602 and the lower chord 603. The upper chord 602 and the lower chord 603, through their own axial force, diffuse the load to both ends. Since the vertical member 601, the upper chord 602, and the lower chord 603 are arranged in an array of three or more, the load will be repeatedly transferred and dispersed in the array structure, eventually distributing the concentrated load evenly throughout the entire truss mechanism 6 and the screw body 1, thus avoiding local overload.

[0042] When the load borne by the truss mechanism 6 is transmitted to the node plate 703 through the lower chord 603 and the vertical member 601, the node plate 703 receives and integrates the mechanical action of the truss mechanism 6. The inclined plate 702 on the outer surface of the node plate 703 receives the force transmitted by the node plate 703 and tends to deform. At this time, the steel pipe 701 begins to play a restraining role, showing that the inclined plate 702 is over-deformed.

[0043] The brass sheet 704 on the inner wall of the steel pipe 701 comes into contact with the inclined plate 702. Through friction, some energy is consumed, which inhibits the local buckling of the inclined plate 702. At the same time, the concrete filling layer further constrains the deformation of the inclined plate 702 through rigid support.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bending-resistant screw comprising a screw body (1), characterized in that, The screw body (1) inner wall is fixedly connected with truss mechanism (6), truss mechanism (6) inner surface is fixedly connected with anti-buckling support assembly (7), truss mechanism (6) right angle is fixedly connected with inclined plane table (4), inclined plane table (4) top is placed with rubber pad (3), rubber pad (3) top is penetrated with countersunk bolt (2).

2. A bending-resistant screw as defined in claim 1, wherein The countersunk bolt (2) is connected with the cross rib (5) by thread, the rubber pad (3) top is fixedly connected with the truss mechanism (6), and the truss mechanism (6) is fixedly connected with the screw body (1) inner wall.

3. A bending-resistant screw as defined in claim 1, wherein The truss mechanism (6) includes vertical rod (601), upper chord (602) and lower chord (603), and the vertical rod (601) is fixedly connected to the top of the rubber pad (3).

4. A bending-resistant screw as defined in claim 3, wherein The upper chord (602) is fixedly connected to one side of the vertical rod (601), and the other side of the upper chord (602) is fixedly connected with another vertical rod (601).

5. A bending-resistant screw as defined in claim 3, wherein The lower chord (603) is fixedly connected to one side of the vertical rod (601), and the other side of the lower chord (603) is fixedly connected with another vertical rod (601), and the vertical rod (601), the upper chord (602) and the lower chord (603) are arrayed more than three to the other end.

6. A kink-resistant screw as defined in claim 1, wherein, The anti-buckling support assembly (7) includes steel pipe (701), inclined plate (702), node plate (703) and brass sheet (704), and the node plate (703) is fixedly connected to the top of the lower chord (603).

7. A kink-resistant screw as defined in claim 6, wherein, The node plate (703) is fixedly connected with the vertical rod (601), the node plate (703) outer surface is fixedly connected with the inclined plate (702), the inclined plate (702) outer wall is sleeved with the steel pipe (701), the steel pipe (701) inner wall is fixed with more than three brass sheets (704), and the gap between the steel pipe (701) and the inclined plate (702) is filled with concrete, and the inclined plate (702) is fixedly connected with the upper chord (602).

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