Rod system structure overrun warning device

Abstract

The invention relates to the technical field of engineering construction, and discloses a rod system structure overrun warning device which comprises a warning system, a stress system and a connection node system between the warning system and a traction structure. The warning system is composed of an elastic system and an elastic rain cover. The elastic system comprises a transmission chamber, a transmission shaft limiting shaft head and an elastic sensitive material. The stress system comprises a lug plate transfer plate, a lug plate transmission shaft and a protector wall; the connection node system comprises an alloy anchor head, a lug plate, a pin shaft and a connection lug plate; the elastic rain cover is arranged outside the protector wall, the lug plate transfer plates are arranged at the two ends of the elastic rain cover, and the lug plate transfer plates are connected with the connection node system; one end of the lug plate transmission shaft is fixedly connected with the lug plate transfer plate, and the transmission shaft limiting shaft head is arranged at the other end of the lug plate transmission shaft; an internal force limiting device is arranged between the transmission shaft limiting shaft heads at the two ends, and an elastic sensitive material is arranged in the internal force limiting device.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and more specifically to an over-limit warning device for a rod structure. Background Art

[0002] As a main cable-stayed structure, the span of cable-stayed bridges is increasing with the rapid development of economy and science and technology. In order to make the whole structure more flexible, the overall stiffness and damping of the structure are continuously reduced, and it is more sensitive to wind loads. Therefore, the stability and safety of the cable-body force structure can no longer be ignored. The existing main force detection device is attached to the structure and cannot be used as the main force structure. A large amount of detection equipment is required for detection. When the stress state of the main structure changes with the environment, the existing force detection device cannot effectively and timely update the stress state of the main structure and issue an early warning at any time when it exceeds the limit. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a pole structure over-limit warning device, which has the advantage of more precise operation.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rod structure over-limit warning device, comprising: a warning system, a force system, a connection node system between the warning system and the traction structure; the warning system is composed of an elastic system and an elastic rain cover, and the elastic system includes a transmission chamber, a transmission shaft limit shaft head, and an elastic sensitive material; the force system includes an ear plate transfer plate, an ear plate transmission shaft, and a fuse wall, and the connection node system includes an alloy anchor head, an ear plate, a pin shaft, and a connection ear plate; the elastic rain cover is arranged on the outside of the fuse wall, the ear plate transfer plate is arranged at both ends of the elastic rain cover, and the ear plate transfer plate is connected to the connection node system; one end of the ear plate transmission shaft is fixedly connected to the ear plate transfer plate, and the transmission shaft limit shaft head is arranged at the other end of the ear plate transmission shaft; an internal force limiting device is arranged between the transmission shaft limit shaft heads at both ends, and the elastic sensitive material is arranged in the internal force limiting device.

[0005] As a preferred technical solution of the present invention, the cavity between the fuse wall and the ear plate transmission shaft is configured as a transmission chamber, and the transmission chamber is filled with lubricating liquid.

[0006] As a preferred technical solution of the present invention, an annular edge sealing groove is formed between the ear plate transfer plate and the elastic rain cover, and an edge sealing strip is arranged in the edge sealing groove.

[0007] As a preferred technical solution of the present invention, the ear plate transfer plate and the ear plate transmission shaft are made of alloy metal material by casting and integrally forming.

[0008] As a preferred technical solution of the present invention, a plurality of elastic sensitive materials are arranged side by side, and both ends of the elastic sensitive materials are respectively connected to the limit shaft heads of the transmission shafts on both sides; a threaded connection fuse wall is arranged on the outside of the internal force limiting device.

[0009] As a preferred technical solution of the present invention, the traction structure includes but is not limited to a cable body, a pull rod, prestressed steel bars, steel strands, and steel materials, and the connection methods with the traction structure include but are not limited to single-ear pin connection, double-ear pin connection, bolting, welding, and cable pulley connection.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention, as a connecting node, realizes a device that enables the structure itself to have the ability to monitor over-limit in a normal manner, so that when the pole structure itself reaches the over-limit state, an early warning is issued, but the structure itself has not been damaged, so that the structure body can be reinforced in advance to prevent accidents; its elastic rain cover can be used for waterproofing to prevent rainwater from entering the device body and causing damage to the device, thereby ensuring that the device can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the normal stress limit of the present invention. Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the normal stress limit of the present invention. Figure 2 ;

[0014] Figure 4 This is a schematic diagram of the limit fracture stage of the present invention;

[0015] Figure 5 This is a schematic diagram of the secondary protection stage of the present invention;

[0016] Figure 6 It is a partial schematic diagram of the present invention;

[0017] Figure 7 for Figure 6 Sectional view at AA;

[0018] Figure 8 for Figure 6 Cross-section at the middle BB;

[0019] Fig. 9 for Figure 6 Cross-section at CC;

[0020] Fig.10 for Figure 6 Sectional view at DD;

[0021] In the figure: 1. Ear plate transfer plate; 2. Ear plate transmission shaft; 3. Transmission chamber; 4. Transmission shaft limit shaft head; 5. Elastic sensitive material; 6. Edge sealing groove; 7. Edge sealing strip; 8. Elastic rain cover; 9. Internal force limiting device; 10. Fuse wall; 11. Threaded connection to the fuse wall. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 10 As shown, the present invention provides a rod structure over-limit warning device, including: a warning system, a force system, a connection node system between the warning system and the traction structure; the warning system is composed of an elastic system and an elastic rain cover 8, and the elastic system includes a transmission chamber 3, a transmission shaft limit shaft head 4, and an elastic sensitive material 5; the force system includes an ear plate transfer plate 1, an ear plate transmission shaft 2, and a fuse wall 10, and the connection node system includes an alloy anchor head, an ear plate, a pin shaft, and a connection ear plate; the elastic rain cover 8 is arranged on the outside of the fuse wall 10, the ear plate transfer plate 1 is arranged at both ends of the elastic rain cover 8, and the ear plate transfer plate 1 is connected to the connection node system; one end of the ear plate transmission shaft 2 is fixedly connected to the ear plate transfer plate 1, and the transmission shaft limit shaft head 4 is arranged at the other end of the ear plate transmission shaft 2; an internal force limiting device 9 is arranged between the transmission shaft limit shaft heads 4 at both ends, and the elastic sensitive material 5 is arranged in the internal force limiting device 9.

[0024] The cavity between the fuse wall 10 and the ear plate transmission shaft 2 is configured as a transmission chamber 3 , and the transmission chamber 3 is filled with lubricating liquid.

[0025] An annular edge sealing groove 6 is formed between the ear plate transfer plate 1 and the elastic rain cover 8 , and an edge sealing strip 7 is arranged in the edge sealing groove 6 .

[0026] The ear plate transfer plate 1 and the ear plate transmission shaft 2 are made of alloy metal material by casting and forming an integral body.

[0027] There are multiple elastic sensitive materials 5 arranged side by side, and both ends of the elastic sensitive materials 5 are respectively connected to the transmission shaft limit shaft heads 4 on both sides; a threaded connection fuse wall 11 is arranged on the outer side of the internal force limiting device 9.

[0028] Among them, the traction structure includes but is not limited to a cable body, a pull rod, prestressed steel bars, steel strands, and steel materials, and the connection methods with the traction structure include but are not limited to single-ear pin connection, double-ear pin connection, bolting, welding, and cable pulley connection.

[0029] The working principle and use process of the present invention:

[0030] The warning system consists of an elastic system and an elastic rain cover 8. The elastic rain cover 8 is arranged on the outermost side of the device. When the rod structure reaches an over-limit state, the elastic rain cover 8 breaks and warns of the over-limit state of the structure. The elastic rain cover 8 also has a waterproof function to prevent rainwater from entering the device body and causing damage to the device, thereby ensuring that the device can be used normally.

[0031] The force-bearing system includes an ear plate transfer plate 1, an ear plate transmission shaft 2, and a fuse wall 10, which are mainly composed of rigid materials; the ear plate transfer plate 1, the ear plate transmission shaft 2, and the fuse wall 10 are used as the main force-bearing devices, and their force-bearing performance is better than the overall performance of the main force-bearing structure. When the structure reaches an over-limit state, the outer elastic rain cover 8 breaks due to over-limit, while the ear plate transfer plate 1, the ear plate transmission shaft 2, and the fuse wall 10 can still be used normally as the main force-bearing devices, ensuring that the overall safety performance of the structure is not damaged.

[0032] The elastic system includes a transmission chamber 3, a transmission shaft limit shaft head 4, an elastic sensitive material 5 and an elastic sensitive material channel; the transmission chamber 3 and the elastic sensitive material channel can distinguish the forces acting on the elastic sensitive material 5 and the fuse wall 10, ensuring that the fuse wall 10 will not deform along with the deformation of the elastic sensitive material 5 and conform to Hooke's law; when the forces acting on the device itself exceed the design value, the elastic sensitive material 5 may undergo a large plastic deformation or fracture, thereby transferring the deformation to the elastic rain cover 8 to convey a warning effect.

[0033] When designing the structure of a suspension bridge, the dangerous points are divided, the force limit is set, and HRB400 threaded steel bars are used as the fuse wall 10. By controlling the diameter and number of the steel bars, the force performance of the fuse wall 10 is better than the overall performance of the main force-bearing structure; Figure 2 , Figure 3 As shown, the over-limit warning device of the bar structure can be used as a node to enable the normal operation of the entire structure in both the normal stress stage and the normal stress limit stage; by setting the stress limit value of this dangerous point during design, the elastic rain cover 8 and the elastic sensitive material 5 are designed, such as Figure 4 As shown in FIG. 1 , when the stress on the main structure of the dangerous point reaches the limit, the stress on the elastic rain cover 8 and the elastic sensitive material 5 exceeds the limit and a certain deformation occurs. The deformation causes the elastic rain cover 8 and the elastic sensitive material 5 to break, and there is a significant fracture phenomenon on the outside, thereby providing a warning for the over-limit state of the bridge; Figure 5 As shown, even if the elastic rain cover 8 and the elastic sensitive material 5 are broken, the structural internal force limiting system will still have a certain bearing capacity and reach the secondary protection stage to ensure the stability of the structure and prevent the occurrence of dangerous accidents.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pole structure over-limit warning device, characterized in that: The invention comprises: an alarm system, a force bearing system, and a connection node system between the alarm system and a traction structure; the alarm system is composed of an elastic system and an elastic rain cover (8); the elastic system comprises a transmission chamber (3), a transmission shaft limit shaft head (4), and an elastic sensitive material (5); the force bearing system comprises an ear plate transfer plate (1), an ear plate transmission shaft (2), and a fuse wall (10); the connection node system comprises an alloy anchor head, an ear plate, a pin shaft, and a connection ear plate; the elastic rain cover (8) is arranged outside the fuse wall (10); the ear plate transfer plate (1) is arranged at both ends of the elastic rain cover (8); the ear plate transfer plate (1) is connected to the connection node system; one end of the ear plate transmission shaft (2) is fixedly connected to the ear plate transfer plate (1), and the transmission shaft limit shaft head (4) is arranged at the other end of the ear plate transmission shaft (2); an internal force limiting device (9) is arranged between the transmission shaft limit shaft heads (4) at both ends, and the elastic sensitive material (5) is arranged in the internal force limiting device (9).

2. The pole structure over-limit warning device according to claim 1 is characterized in that: The cavity between the fuse wall (10) and the ear plate transmission shaft (2) is arranged as a transmission chamber (3), and the transmission chamber (3) is filled with lubricating liquid.

3. The pole structure over-limit warning device according to claim 1 is characterized in that: An annular edge sealing groove (6) is formed between the ear plate transfer plate (1) and the elastic rain cover (8), and an edge sealing strip (7) is arranged in the edge sealing groove (6).

4. The pole structure over-limit warning device according to claim 1 is characterized in that: The ear plate transfer plate (1) and the ear plate transmission shaft (2) are made of alloy metal material by casting and forming an integral part.

5. The pole structure over-limit warning device according to claim 1 is characterized in that: The elastic sensitive material (5) is arranged in multiple strips in parallel, and the two ends of the elastic sensitive material (5) are respectively connected to the transmission shaft limit shaft heads (4) on both sides; and a threaded connection fuse wall (11) is arranged on the outside of the internal force limiting device (9).

6. The pole structure over-limit warning device according to claim 1 is characterized in that: The traction structure includes but is not limited to a cable body, a pull rod, prestressed steel bars, steel strands, and steel materials, and the connection methods with the traction structure include but are not limited to single-ear pin connection, double-ear pin connection, bolting, welding, and cable pulley connection.

Images