CN118110085A - Self-sensing beam falling preventing device - Google Patents
Self-sensing beam falling preventing device Download PDFInfo
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- CN118110085A CN118110085A CN202410278051.4A CN202410278051A CN118110085A CN 118110085 A CN118110085 A CN 118110085A CN 202410278051 A CN202410278051 A CN 202410278051A CN 118110085 A CN118110085 A CN 118110085A
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- rod
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a self-sensing beam falling prevention device, which belongs to the technical field of beam falling prevention and comprises a transition steel rod, two groups of anchoring assemblies, a telescopic assembly and two groups of first strain sensors; two ends of the transition steel rod are respectively arranged on two adjacent groups of beam bodies; the two groups of anchoring assemblies are correspondingly arranged at two ends of the transition steel rod and fixedly connected with the beam body; the telescopic component extends along the axial direction of the transition steel rod; the telescopic component comprises two connecting rods which are connected with the two groups of anchoring components in a one-to-one correspondence manner, and a telescopic force-bearing rod which is arranged between the two connecting rods; the two ends of the telescopic force-bearing rod are respectively limited on the corresponding connecting rods through elastic pieces, and the telescopic force-bearing rod is in sliding connection with the transition steel rod along the axial direction of the transition steel rod; the two groups of first strain sensors are vertically symmetrically arranged on the telescopic force-bearing rod. The self-sensing beam falling prevention device provided by the invention can adapt to the telescopic deformation of the beam body in the normal use state, and can evaluate the safety of the bridge accurately in time.
Description
Technical Field
The invention belongs to the technical field of beam falling prevention, and particularly relates to a self-sensing beam falling prevention device.
Background
Bridge girder falling damage is one of main damage forms of bridge structures under the action of impact loads such as earthquake, and when bridge girder falling damage occurs, traffic life lines are often interrupted, so that life and property associated losses are huge. Therefore, in order to mitigate bridge damage under seismic action, anti-drop beam construction measures need to be considered in bridge design.
In the prior art, the adopted beam falling prevention device has larger constraint force on the beam body, so that the telescopic deformation of the beam body in a normal use state is influenced to a certain extent, the performance of a connecting node is easily further influenced, the degree of freedom of the telescopic deformation is reduced, the beam falling prevention device is damaged or the beam body is damaged, and the safety of the beam falling prevention device is reduced; meanwhile, most of existing beam falling prevention devices cannot timely evaluate the performance of the devices and the safety of bridge connection nodes, so that problems or risks cannot be timely found.
Disclosure of Invention
The invention aims to provide a self-sensing beam falling prevention device, and aims to solve the technical problems that the beam falling prevention device in the prior art has large constraint on a beam body, cannot adapt to the expansion and contraction deformation of the beam body in a normal use state, and cannot evaluate the safety of a bridge in time.
In order to achieve the above purpose, the invention adopts the following technical scheme: provided is a self-sensing beam falling prevention device, comprising:
The two ends of the transition steel rod extend to the two adjacent groups of beam bodies respectively;
The two groups of anchoring assemblies are correspondingly arranged at two ends of the transition steel rod and fixedly connected with the beam body;
A telescopic assembly extending axially along the transition steel rod; the telescopic component comprises two connecting rods which are connected with the two groups of anchoring components in a one-to-one correspondence manner, and a telescopic force-bearing rod which is arranged between the two connecting rods; the two ends of the telescopic force-bearing rod are respectively limited on the corresponding connecting rods through elastic pieces, and the telescopic force-bearing rod is connected with the transition steel rod in a sliding manner along the axial direction of the transition steel rod; and
The two groups of first strain sensors are vertically symmetrically arranged on the telescopic force-bearing rod;
When the beam body is displaced or vibrated, the telescopic force-bearing rod compresses the elastic piece and slides on the transition steel rod in a telescopic way.
In one possible implementation manner, two ends of the telescopic force-bearing rod are respectively provided with a limit baffle;
A limiting groove is formed in the connecting rod from the top surface downwards; in the axial direction of the connecting rod, the limiting groove is a step groove extending inwards from the end part of the connecting rod, and the size of a notch of the step groove close to the end part of the transition steel rod is larger than that of a notch of the step groove far away from the end part of the transition steel rod;
The telescopic force-bearing rod penetrates into the limiting groove, and the limiting baffle is limited at the step surface of the limiting groove.
In some embodiments, the elastic member comprises:
the elastic rubber cushion is arranged in the limit groove and is arranged at the end part of the telescopic force-bearing rod and the groove bottom of the limit groove far away from the telescopic force-bearing rod;
the elastic rubber ring is sleeved on the telescopic force-bearing rod and is arranged between the limit baffle and the step surface.
The transition steel rod is provided with an intermediate barrier, and the telescopic force-bearing rod is arranged in the intermediate barrier in a penetrating way; buffer springs are respectively arranged between the middle baffle and the opposite end parts of the two connecting rods, and the buffer springs are sleeved on the telescopic force-bearing rods.
In one possible implementation manner, the self-sensing beam falling preventing device further comprises a limiting ring, wherein the limiting ring is fixed on a beam column for supporting two adjacent groups of beam bodies; a flexible steel rope is connected between the two ends of the telescopic force-bearing rod, and the flexible steel rope is arranged in the limiting ring in a penetrating mode.
In some embodiments, a second strain sensor is provided on the flexible steel cord.
The flexible steel rope comprises a steel wire rope and an epoxy protection layer which is annularly arranged outside the steel wire rope, and two groups of second strain sensors are symmetrically arranged on the epoxy protection layer along the radial direction of the steel wire rope.
In one possible implementation, the anchor assembly includes:
An anchor pad fixed to the corresponding Liang Tishang; the end part of the transition steel rod is fixed on the anchoring base plate; the connecting rod is abutted to the top of the anchoring base plate;
The anchor nut is arranged on the anchor backing plate and is fixed with the connecting rod;
And the anchoring baffle is parallel to the anchoring nut and arranged on the anchoring base plate, and the anchoring baffle is abutted with the outer peripheral surface of the connecting rod.
In some embodiments, the anchor assembly further comprises:
The spring gasket is sleeved on the connecting rod and is arranged between the anchoring baffle and the anchoring nut;
the honeycomb aluminum backing plate is arranged between the anchoring backing plate and the transition steel rod; wherein the connecting rod is arranged in the honeycomb aluminum backing plate in a penetrating way.
Illustratively, the anchor baffle includes:
the plurality of groups of vertical rods are distributed at two sides of the connecting rod at intervals along the axial direction of the connecting rod and are fixed with the anchoring base plate;
the cover plate is abutted to the top of the connecting rod and is respectively fixed with the plurality of groups of vertical rods.
Compared with the prior art, the scheme provided by the embodiment of the application has the advantages that the transition steel rod is arranged between the two groups of beam bodies, and the anchoring assembly is arranged to fix the transition steel rod, so that the stability of connection between the two groups of beam bodies and the constraint strength of the beam bodies are ensured; the telescopic force-bearing rod is limited between the two connecting rods, so that when the beam body is displaced or vibrated, the telescopic force-bearing rod slides on the transition steel rod, and further, the elastic piece counteracts the telescopic deformation force generated when the beam body is displaced or vibrated, so that the beam falling prevention device is suitable for the telescopic deformation of the beam body in a normal use state; through setting up first deformation sensor to the deformation situation of real-time supervision roof beam body to, two sets of first deformation sensor symmetry from top to bottom is located on the flexible force-bearing pole, reducible temperature influence and the inhomogeneous influence of stress distribution improve the monitoring accuracy to the flexible deformation force of roof beam body, in order to in time accurately evaluate the security of bridge.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an installation structure of a self-sensing beam falling prevention device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a self-sensing beam falling prevention device according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 2;
fig. 4 is a schematic structural view of an anchoring baffle according to an embodiment of the present invention;
FIG. 5 is a schematic view of a mounting structure of a first strain sensor;
Fig. 6 is a schematic view of a mounting structure of the second strain sensor.
In the figure:
1. A transition steel rod; 11. an intermediate barrier; 12. a buffer spring; 2. an anchor assembly; 21. an anchor backing plate; 22. an anchor nut; 23. an anchor baffle; 231. a vertical rod; 232. a cover plate; 24. a spring washer; 25. a honeycomb aluminum backing plate; 3. a telescoping assembly; 31. a connecting rod; 311. a limit groove; 32. a telescopic force-bearing rod; 321. a limit baffle; 33. an elastic rubber pad; 34. an elastic rubber ring; 4. a first strain sensor; 5. a beam body; 6. a beam column; 61. a limiting ring; 7. a flexible steel cord; 71. an epoxy protective layer; 72. a wire rope; 73. and a second strain sensor.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 6, a description will now be given of the self-sensing beam falling preventing device provided by the present invention. The self-sensing beam falling prevention device comprises a transition steel rod 1, two groups of anchoring assemblies 2, a telescopic assembly 3 and two groups of first strain sensors 4; two ends of the transition steel rod 1 are respectively arranged on two adjacent groups of beam bodies 5; the two groups of anchor assemblies 2 are correspondingly arranged at two ends of the transition steel rod 1 and are fixedly connected with the beam body 5; the telescopic component 3 extends along the axial direction of the transition steel rod 1; the telescopic assembly 3 comprises two connecting rods 31 which are connected with the two groups of anchor assemblies 2 in a one-to-one correspondence manner, and a telescopic force-bearing rod 32 which is arranged between the two connecting rods 31; two ends of the telescopic force-bearing rod 32 are respectively limited on the corresponding connecting rods 31 through elastic pieces, and the telescopic force-bearing rod 32 is in sliding connection with the transition steel rod 1 along the axial direction of the transition steel rod 1; the two groups of first strain sensors 4 are vertically symmetrically arranged on the telescopic force-bearing rod 32; when the beam body 5 is displaced or vibrated, the telescopic bearing rod 32 compresses the elastic piece and slides on the transition steel rod 1 in a telescopic manner.
It should be understood that the telescopic direction of the telescopic force-bearing rod 32 is the same as the axial direction of the transition steel rod 1, specifically, the telescopic force-bearing rod 32 stretches along the spacing direction of the two adjacent beam bodies 5; when the telescopic force-bearing rod 32 slides on the transition steel rod 1 in a telescopic way, two ends of the telescopic force-bearing rod 32 are always limited on the corresponding connecting rods 31, and the telescopic force-bearing rod 32 compresses or stretches the elastic piece, so that the elastic piece counteracts the telescopic deformation generated by displacement or vibration of the beam body 5, and the stability of the beam body 5 is ensured.
Specifically, referring to fig. 5, the upper and lower sides of the telescopic force-bearing rod 32 are respectively provided with a first groove adapted to fix the first strain sensor 4, and the first grooves extend along the axial direction of the telescopic force-bearing rod 32; in order to eliminate the influence of temperature and external force, specifically, the two first strain sensors 4 are an upper strain gauge and a lower strain gauge respectively; setting the strain value of the upper strain gauge as X 1, setting the strain value of the lower strain gauge as X 2, and taking X= (X 1+X2)/2 as the strain value when X 1 and X 2 are positive values, wherein the stress is uniform and the temperature influence can be ignored; when X 1 and X 2 are positive and negative, the strain is x= (X 1-X2)/2, and the stress on the upper strain gauge and the lower strain gauge is opposite, i.e. the upper strain gauge and the lower strain gauge are pulled up and down or pulled up and down, X T is defined as the strain amount caused by temperature, and X F is defined as the strain amount caused by external force, at this time, X 1＝XF+XT,X2＝XF+XT, so that the temperature influence can be eliminated by X 1-X2, and uniform strain can be obtained.
Compared with the prior art, the self-sensing beam falling prevention device provided by the invention has the advantages that the transition steel rod 1 is arranged between the two groups of beam bodies 5, and the anchor assembly 2 is arranged to fix the transition steel rod 1, so that the stability of connection between the two groups of beam bodies 5 and the constraint strength of the beam bodies 5 are ensured; the telescopic force-bearing rod 32 is limited between the two connecting rods 31, so that when the beam body 5 is displaced or vibrated, the telescopic force-bearing rod 32 slides on the transition steel rod 1, and further, the telescopic deformation force generated when the beam body 5 is displaced or vibrated is counteracted by the elastic piece, so that the beam falling prevention device is suitable for the telescopic deformation of the beam body 5 in a normal use state; through setting up first deformation sensor to the deformation condition of real-time supervision roof beam body 5 to, two sets of first deformation sensor 4 symmetry from top to bottom are located on flexible spandrel pole 32, can reduce the influence of temperature influence and stress distribution inhomogeneous, improve the monitoring accuracy to the flexible deformation force of roof beam body 5, in order to in time accurately evaluate the security of bridge.
Referring to fig. 3, in some possible embodiments, two ends of the telescopic force-bearing rod 32 are respectively provided with a limit baffle 321; the connecting rod 31 is provided with a limit groove 311 downwards from the top surface, the limit groove 311 is a step groove extending inwards from the end part of the connecting rod 31 in the axial direction of the connecting rod 31, and the size of a notch of the step groove close to the end part of the transition steel rod 1 is larger than that of a notch of the step groove far away from the end part of the transition steel rod 1; wherein, flexible load bar 32 penetrates in spacing groove 311, and limit baffle 321 is spacing in the step face department of spacing groove 311.
Through setting up limit baffle 321 to guarantee to leave limit structure between the tip of flexible force-bearing rod 32 and the connecting rod 31 all the time, avoid flexible force-bearing rod 32 to break away from connecting rod 31 and influence flexible force-bearing rod 32's atress.
Specifically, a notch, which is close to the end part of the transition steel rod 1, of the step groove is defined as a first connecting groove, a notch, which is far away from the end part of the transition steel rod 1, of the step groove is defined as a second connecting groove, and a step surface is formed at the joint of the first connecting groove and the second connecting groove; the telescopic force-bearing rod 32 penetrates into the first connecting groove from the second connecting groove, and the limiting baffle 321 is always limited in the first connecting groove; further, the elastic piece is also arranged in the corresponding first connecting groove.
Referring to fig. 3, in some embodiments, the elastic member includes an elastic rubber pad 33 and an elastic rubber ring 34; the elastic rubber pad 33 is arranged in the limit groove 311 and is arranged at the end part of the telescopic force-bearing rod 32 and at the groove bottom of the limit groove 311 away from the telescopic force-bearing rod 32; the elastic rubber ring 34 is sleeved on the telescopic force-bearing rod 32 and is arranged between the limit baffle 321 and the step surface.
Specifically, the elastic rubber pad 33 is disposed in the first connecting groove and is close to the end of the transition steel rod 1, and when the telescopic force-bearing rod 32 stretches in the first connecting groove, the elastic rubber pad 33 is compressed; optionally, the elastic rubber pad 33 is a cylindrical structure extending along a vertical direction; the elastic rubber ring 34 is arranged in the first connecting groove and between the limit baffle 321 and the step surface, and when the telescopic force-bearing rod 32 reversely stretches in the first connecting groove, the elastic rubber ring 34 is compressed; the elastic rubber pad 33 and the elastic rubber ring 34 can give a larger buffer space for the telescopic force-bearing rod 32 and absorb most of telescopic energy generated when the beam body 5 is displaced or vibrated, so as to adapt to telescopic deformation when the beam body 5 is displaced or vibrated.
Referring to fig. 2, an exemplary transition steel rod 1 is provided with an intermediate barrier 11, and a telescopic bearing rod 32 is inserted into the intermediate barrier 11; buffer springs 12 are respectively arranged between the opposite ends of the middle baffle 11 and the two connecting rods 31, and the buffer springs 12 are sleeved on the telescopic force-bearing rods 32.
The buffer springs 12 are arranged at intervals through the middle baffle 11, and when the beam falling prevention device is subjected to tensile pressure, the expansion and absorption performances of the springs can be fully exerted; at this time, no matter the beam body 5 is under tension or pressure, the two buffer springs 12 are both in tension deformation and in compression deformation, so that the energy absorbing capacity of the two buffer springs 12 is greatly increased, and meanwhile, the deformation of the buffer springs 12 can be balanced, the buffer springs 12 are effectively prevented from reaching the elastic limit, and the service life of the buffer springs 12 is prolonged.
Referring to fig. 1, in some possible embodiments, the self-sensing beam falling prevention device further includes a limiting ring 61, where the limiting ring 61 is fixed on the beam column 6 for supporting two adjacent beam bodies 5; a flexible steel rope 7 is connected between the two ends of the telescopic force-bearing rod 32, and the flexible steel rope 7 is arranged in the limiting ring 61 in a penetrating way.
Through setting up flexible steel cable 7 to increase the one deck protection at the both ends of flexible force-bearing rod 32, so that when roof beam body 5 takes place to empty or crooked, through the deformation and the displacement of the spacing roof beam body 5 of flexible steel cable 7, improve the stability that roof beam body 5 supported.
Referring to fig. 6, in some embodiments, a second strain sensor 73 is provided on the flexible steel cord 7. The second strain sensor 73 is arranged to monitor the telescopic deformation of the beam body 5 in multiple directions and multiple angles, so that the safety of the beam body 5 can be accurately evaluated in time.
Referring to fig. 6, the flexible steel cord 7 includes a steel cord 72 and an epoxy protective layer 71 disposed around the steel cord 72, and two sets of second strain sensors 73 are symmetrically disposed on the epoxy protective layer 71 along the radial direction of the steel cord 72.
By arranging the epoxy protective layer 71, on one hand, the abrasion resistance of the flexible steel rope 7 is improved, the steel wire rope 72 in the flexible steel rope 7 can be protected, and abrasion and fracture of the steel wire rope 72 in the using process are avoided; on the other hand, a second groove may be formed on the epoxy protective layer 71, so that the second strain sensor 73 is adhered and fixed in the second groove.
Referring to fig. 2, in some possible embodiments, the anchor assembly 2 includes an anchor pad 21, an anchor nut 22, and an anchor baffle 23; the anchor backing plates 21 are fixed on the corresponding beam bodies 5; the end part of the transition steel rod 1 is fixed on an anchoring base plate 21; the connecting rod 31 abuts on the top of the anchor pad 21; the anchor nut 22 is arranged on the anchor backing plate 21 and is fixed with the connecting rod 31; the anchor baffle 23 is provided on the anchor pad 21 in parallel with the anchor nut 22, and the anchor baffle 23 abuts against the outer peripheral surface of the connecting rod 31.
By fixing the anchor pad 21 on the beam body 5, the end of the connecting rod 31 is fixed on the anchor pad 21 by the anchor nut 22 and the anchor baffle 23; preferably, the materials of the anchoring backing plate 21, the anchoring nut 22 and the anchoring baffle plate 23 are galvanized or 40 chromium materials.
Specifically, the anchor backing plate 21 is provided with a plurality of bolt holes, and pressure-bearing high-strength bolts are later punched in the bolt holes so as to fix the anchor backing plate 21 on the corresponding beam body 5.
Referring to fig. 2, in some embodiments, the anchor assembly 2 further includes a spring washer 24 and a cellular aluminum pad 25; the spring washer 24 is sleeved on the connecting rod 31 and is arranged between the anchoring baffle 23 and the anchoring nut 22; the honeycomb aluminum backing plate 25 is arranged between the anchoring backing plate 21 and the transition steel rod 1; wherein the connecting rod 31 is inserted into the honeycomb aluminum pad 25.
The spring washer 24 is arranged between the anchor baffle 23 and the anchor nut 22, and the spring washer 24 can enable a certain telescopic deformation space to be formed between the anchor baffle 23 and the anchor nut 22, so that the influence of thermal expansion and cold contraction of the anchor baffle 23 and the anchor nut 22 is eliminated.
The cellular aluminum pad 25 has good energy absorbing capability, if earthquake or other accidental load occurs, the cellular aluminum plate can absorb part of energy, when the cellular aluminum pad 25 absorbs energy and deforms greatly, the pad effect fails, and at the moment, the telescopic force-bearing rod 32 positioned in the middle has more deformation space, so that the ductile effect of node damage is increased, and the node safety is improved.
Referring to fig. 4, the anchoring baffle 23 includes a plurality of sets of vertical rods 231 and a cover plate 232; the plurality of groups of vertical rods 231 are distributed at two sides of the connecting rod 31 at intervals along the axial direction of the connecting rod 31 and are fixed with the anchoring base plate 21; the cover 232 is abutted to the top of the connecting rod 31 and is fixed to the plurality of sets of vertical rods 231 respectively.
Specifically, the vertical rods 231 are welded and fixed on the anchoring base plate 21, and the cover plate 232 is connected with the vertical rods 231 through bolts so as to limit and fix the connecting rods 31, thereby ensuring the stability of the beam falling preventing device.
The self-sensing beam falling prevention device provided by the invention is convenient to assemble, reliable in stress performance, capable of adapting to the telescopic deformation of the beam body 5, remarkable in tensile and compressive resistance, capable of sensing the stress condition of the beam body 5 through the first strain sensor 4 and the second strain sensor 73, capable of effectively ensuring the beam falling prevention effect under the action of an earthquake, and convenient and accurate in evaluating the safety of bridge nodes.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. From perception preventing roof beam device that falls, its characterized in that includes:
the two ends of the transition steel rod (1) are respectively arranged on two adjacent groups of beam bodies (5);
two groups of anchor assemblies (2) are correspondingly arranged at two ends of the transition steel rod (1) and fixedly connected with the beam body (5);
A telescopic assembly (3) extending along the axial direction of the transition steel rod (1); the telescopic assembly (3) comprises two connecting rods (31) which are connected with the two groups of anchoring assemblies (2) in a one-to-one correspondence manner, and a telescopic bearing rod (32) which is arranged between the two connecting rods (31); two ends of the telescopic force-bearing rod (32) are limited on the corresponding connecting rods (31) through elastic pieces respectively, and the telescopic force-bearing rod (32) is connected with the transition steel rod (1) in a sliding manner along the axial direction of the transition steel rod (1); and
Two groups of first strain sensors (4) are vertically symmetrically arranged on the telescopic force-bearing rod (32);
When the beam body (5) is displaced or vibrated, the telescopic force-bearing rod (32) compresses the elastic piece and slides on the transition steel rod (1) in a telescopic mode.
2. The self-sensing beam falling prevention device according to claim 1, wherein limiting baffles (321) are respectively arranged at two ends of the telescopic force-bearing rod (32);
A limiting groove (311) is formed in the connecting rod (31) from the top surface downwards; in the axial direction of the connecting rod (31), the limiting groove (311) is a step groove extending inwards from the end part of the connecting rod (31), and the size of a notch of the step groove close to the end part of the transition steel rod (1) is larger than that of a notch of the step groove far away from the end part of the transition steel rod (1);
the telescopic force-bearing rod (32) penetrates into the limiting groove (311), and the limiting baffle (321) is limited at the step surface of the limiting groove (311).
3. A self-sensing anti-roll-off device as recited in claim 2, wherein the resilient member comprises:
The elastic rubber pad (33) is arranged in the limit groove (311) and is arranged at the end part of the telescopic force-bearing rod (32) and at the groove bottom of the limit groove (311) far away from the telescopic force-bearing rod (32);
the elastic rubber ring (34) is sleeved on the telescopic force-bearing rod (32) and is arranged between the limit baffle (321) and the step surface.
4. A self-sensing beam falling prevention device according to claim 3, wherein the transition steel rod (1) is provided with an intermediate barrier (11), and the telescopic bearing rod (32) is penetrated in the intermediate barrier (11); buffer springs (12) are respectively arranged between the middle baffle (11) and the opposite end parts of the two connecting rods (31), and the buffer springs (12) are sleeved on the telescopic bearing rods (32).
5. The self-sensing beam drop prevention device according to claim 1, further comprising a limiting ring (61), wherein the limiting ring (61) is fixed on a beam column (6) for supporting two adjacent groups of beam bodies (5); a flexible steel rope (7) is connected between the two ends of the telescopic force-bearing rod (32), and the flexible steel rope (7) is arranged in the limiting ring (61) in a penetrating way.
6. A self-perceived drop beam device as claimed in claim 5, characterized in that said flexible steel cord (7) is provided with a second strain sensor (73).
7. The self-sensing beam falling prevention device according to claim 6, wherein the flexible steel rope (7) comprises a steel wire rope (72) and an epoxy protection layer (71) which is annularly arranged outside the steel wire rope (72), and two groups of second strain sensors (73) are symmetrically arranged on the epoxy protection layer (71) along the radial direction of the steel wire rope (72).
8. The self-perceived drop beam prevention device of claim 1, wherein the anchor assembly (2) comprises:
An anchor pad (21) fixed to the corresponding beam body (5); the end part of the transition steel rod (1) is fixed on the anchoring base plate (21); the connecting rod (31) is abutted to the top of the anchoring base plate (21);
The anchor nut (22) is arranged on the anchor backing plate (21) and is fixed with the connecting rod (31);
The anchoring baffle plate (23) is arranged on the anchoring base plate (21) in parallel with the anchoring nut (22), and the anchoring baffle plate (23) is abutted with the outer peripheral surface of the connecting rod (31).
9. The self-perceived drop beam prevention device of claim 8, wherein the anchor assembly (2) further comprises:
The spring gasket (24) is sleeved on the connecting rod (31) and is arranged between the anchoring baffle plate (23) and the anchoring nut (22);
A honeycomb aluminum backing plate (25) arranged between the anchoring backing plate (21) and the transition steel rod (1); wherein the connecting rod (31) is arranged in the honeycomb aluminum backing plate (25) in a penetrating way.
10. Self-sensing anti-fall device according to claim 8 or 9, characterized in that the anchoring baffle (23) comprises:
The plurality of groups of vertical rods (231) are distributed at two sides of the connecting rod (31) at intervals along the axial direction of the connecting rod (31) and are fixed with the anchoring base plate (21);
The cover plates (232) are abutted to the tops of the connecting rods (31) and are respectively fixed with the plurality of groups of vertical rods (231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410278051.4A CN118110085A (en) | 2024-03-12 | 2024-03-12 | Self-sensing beam falling preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410278051.4A CN118110085A (en) | 2024-03-12 | 2024-03-12 | Self-sensing beam falling preventing device |
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| Publication Number | Publication Date |
|---|---|
| CN118110085A true CN118110085A (en) | 2024-05-31 |
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|---|---|---|---|
| CN202410278051.4A Pending CN118110085A (en) | 2024-03-12 | 2024-03-12 | Self-sensing beam falling preventing device |
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| CN (1) | CN118110085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119394556A (en) * | 2024-11-15 | 2025-02-07 | 中国商用飞机有限责任公司 | Dynamic impact energy measuring device, aircraft flap assembly and dynamic impact energy measuring method |
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2024
- 2024-03-12 CN CN202410278051.4A patent/CN118110085A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119394556A (en) * | 2024-11-15 | 2025-02-07 | 中国商用飞机有限责任公司 | Dynamic impact energy measuring device, aircraft flap assembly and dynamic impact energy measuring method |
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