Intelligent support with height adjusting function
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an intelligent support with a height adjusting function.
Background
The bridge support is an important structural component for connecting an upper structure and a lower structure of a bridge, and can reliably transmit the counter force and the deformation (displacement and corner) of the upper structure of the bridge to the lower structure of the bridge. The spherical support has large bearing capacity, large displacement, flexible corner, consistent rotation performance in all directions and wide temperature application range; therefore, the spherical support is widely applied to various highway municipal railway bridges.
However, the traditional spherical support has no force measuring function, the stress condition of the support cannot be detected and the vertical bearing capacity of the support cannot be read in the using process, the internal force distribution condition of each section of the structure cannot be accurately known, the reliability of the bridge design theory and the rationality of the design method cannot be verified, and great inconvenience is brought to the maintenance and the structure monitoring of the support. When the spherical support is abnormal in the operation process, the stress condition of the support cannot be visually detected, so that the operation state of the upper structure of the bridge cannot be judged, and the health condition of the bridge structure cannot be monitored and evaluated in time. In addition, when the pier foundation on the soft soil foundation is unevenly settled, various prefabricated beams and continuous structures are slightly deformed after being tensioned, the bearing pressure of the bridge support is uneven and even the phenomenon of three legs occurs due to factors such as construction errors and the like which are difficult to avoid by the elevation of the supporting padstone of the beam structure, the stress state of the upper and lower structures of the bridge can be changed, and the potential safety hazard is brought to the structure. In addition, the traditional spherical support does not have the function of stepless height adjustment, and the height difference of a bridge generated during construction height error and use cannot be subjected to stepless height adjustment, so that the stress of each support is adjusted.
Therefore, the stress condition of the bridge support can be known in time, and the height can be adjusted in time when the support is unloaded and detached so as to avoid three-point support when a vehicle passes a bridge, which is an economic and effective solution for avoiding catastrophic accidents of the bridge, and the internal sensor of the existing force-measuring support is not easy to replace.
Disclosure of Invention
The invention aims to provide the heightening force-measuring support which is simple in structure, economical and practical, can accurately, continuously and effectively monitor the vertical bearing capacity of the support, can realize the function of uniform pressure bearing by heightening, is convenient to install the heightening base plate, is convenient to install and remove a sensor, and can accurately know whether the sensor is installed in place during installation.
In order to solve the technical problem, the invention adopts the following scheme:
the utility model provides an intelligent support with height adjusting function, includes built-in panel, heightening backing plate, goes up bedplate, sliding seat, base and bedplate down, the base is located the upper surface of bedplate top surface and base down and is inwards sunken to be formed with the cavity, the lower part cover of sliding seat is located in the cavity, the top surface and the last bedplate bottom surface sliding connection of sliding seat, heightening the backing plate and being located between built-in panel bottom surface and the last bedplate top surface, the built-in panel bottom surface is equipped with the locating plate that is the distribution of article font, and the locating plate is located the bedplate outside and closely laminates with the side of last bedplate, heightening the backing plate.
By adopting the technical scheme, the normal buffering, energy dissipation and shock absorption effects of the support are met by the sliding of the sliding seat, the effect of adjusting the height of the support is achieved by changing the number of the heightening base plates between the upper seat plate and the embedded plate, so that the stress condition of each support is changed, the heightening base plates are steel base plates, the flatness is good, the vertical stress of the support is uniform, three-point support is not easy to occur on the whole beam body after the stress of each support is changed, the safety of a bridge is effectively protected, the heightening base plates can be rapidly installed or taken out from the notches of the three positioning plates by the positioning plates distributed on the bottom surface of the upper seat plate in a shape like a Chinese character 'pin', the heightening efficiency of the support is improved, the positioning plates limit the positions of the heightening base plates from three directions, the heightening base plates can keep good integrity, the heightening base, meanwhile, the heightening base plate can be prevented from sliding out, so that the height of the support is influenced, and the safety of the bridge is further influenced.
Preferably, the force measuring device further comprises a force measuring elastic body, the force measuring elastic body is installed at the bottom of the cavity and is formed by combining a middle elastic body and an annular elastic body, the lower surface of the sliding seat is attached to the upper surface of the force measuring elastic body, a sensor is installed on the side surface of the base, and the measuring end of the sensor is in close contact with the side surface of the annular elastic body.
By adopting the technical scheme, the force-measuring elastic body is a solid elastic material which has the property characteristics similar to fluid and is incompressible in volume under a certain pressure state, and when the force-measuring elastic body is subjected to the compressive stress of the upper structure, the magnitude of the compressive stress can be constantly transmitted to all directions by the force-measuring elastic body; the force measuring elastic body is formed by combining a middle elastic body and an annular elastic body, and is easy to damage under the condition of long-term compression, the force measuring elastic body needs to be completely replaced during replacement and is divided into the middle elastic body and the annular elastic body, so that the force transmission cannot be influenced, the two elastic bodies can be replaced separately, the material cost is saved, a sensor is arranged on the side surface of the base, and the measuring end of the sensor is in close contact with the side surface of the annular elastic body; the force measuring system adopts a signal wire to transmit a pressure wavelength signal output by a sensor for sensing the pressure stress change of the force measuring elastic body to a demodulator, the demodulator analyzes and processes the wavelength signal and transmits the wavelength signal to a computer through a wireless network or a wired network to process the wavelength signal, then the actual load of the support is visually displayed and compared with the normal use load of the support, and an alarm is given when an abnormity occurs, so that the load of the support is remotely monitored, and the height of the support is timely adjusted and processed.
Preferably, the circumference of base is seted up and is used for installing the change hole of sensor, changes the hole and be four and be the cross distribution in base circumference.
By adopting the technical scheme, the four replacement holes distributed in a cross shape are formed in the circumferential direction of the base, the replacement holes are convenient for an operator to pass through by hand, the sensor can be directly and manually fixed on the side surface of the force measurement elastic body in a bonding mode, so that the operator can accurately know whether the sensor is installed in place or not, the normal operation of the support force measurement system is ensured, the sensor can be directly sensed to be in contact with the side wall of the force measurement bearing body, the installation position of the sensor can be directly observed through the replacement holes, the sensor can be directly and manually removed and replaced only through the replacement holes during removal or replacement, and the sensor is not in threaded connection with the side wall of the base, so that the situation that threads are corroded is avoided, the sensor is more quickly installed and detached, whether the sensor is installed in place or not can be timely known.
Preferably, the opening part of changing the hole is equipped with the shrouding of fixing on the base, and the shrouding is used for sealing the change hole, prevents that impurity from getting into, pollutes the sensor and influences its function, guarantees monitoring data's accuracy.
Preferably, the sensor is an alloy film resistance type pressure sensor, the sensor is small and exquisite in appearance, high in measurement precision (up to 0.2 grade and above), strong in corrosion resistance and vibration resistance, can accurately measure in a wide temperature range (-200 ℃ -100 ℃), and accords with the external environment of the support.
Preferably, the sliding seat includes spherical crown welt and the end basin that is located spherical crown welt bottom surface, the bottom surface of spherical crown welt is convex sphere, the top surface of end basin is equipped with the cooperation the concave sphere of spherical crown welt, spherical crown welt bottom surface and end basin top surface form the sphere pair and are connected.
Preferably, be equipped with the sphere slide between spherical crown welt and the end basin, the sphere slide is inlayed end basin upper surface, the sphere slide is polytetrafluoroethylene slide or modified polytetrafluoroethylene slide, the sphere slide is inlayed in the recess of end basin concave spherical surface through binder bonding mode cooperation screw or anchor mode fastening, the binder is insoluble and thermosetting, the protruding spherical surface of spherical crown welt can adopt cladding stainless steel board or electroplate hard chromium and handle, strengthens its smoothness and wearability.
Preferably, a plane sliding plate is arranged between the spherical crown lining plate and the upper seat plate, the plane sliding plate is embedded on the upper surface of the spherical crown lining plate, the upper seat plate and the spherical crown lining plate form a plane sliding friction pair, the plane sliding plate is a polytetrafluoroethylene sliding plate or a modified polytetrafluoroethylene sliding plate, and the plane friction pair meets the requirement of displacement of the beam body during expansion with heat and contraction with cold; the bottom surface of the upper seat plate can also be provided with a mirror surface stainless steel sliding plate matched with the plane sliding plate, so that the smoothness and the wear resistance of the upper seat plate are enhanced.
Preferably, go up bedplate bottom surface circumference and be equipped with the round limiting plate, the limiting plate is located the end basin outside, and the limiting plate closes on and contactless with end basin side, and the limiting plate prevents end basin landing through welding or integrated into one piece with last bedplate, avoids falling the roof beam risk.
Preferably, the embedded plate is arranged on the bottom surface of the lower seat plate, the heightening base plate is arranged between the lower seat plate and the embedded plate, the height of the support is adjusted by changing the number of the heightening base plates between the lower seat plate and the embedded plate through arranging the embedded plate on the bottom surface of the lower seat plate, and the stress of the support is changed, and other settings are the same as the above.
The invention has the following beneficial effects:
1. the invention has compact structure and reasonable design, can detect the vertical bearing capacity of the support through the force measuring elastic body, realizes stepless height adjustment of the support by changing the number of the height-adjusting base plates, and has simple, convenient and reliable force measuring and height adjusting methods.
2. The support is relatively independent from the alloy film resistance type pressure sensor, the installation of the base is facilitated through the circumferential replacement hole of the base, and later maintenance and replacement are facilitated.
3. A plurality of supports of the structure are integrated in a networking mode through a network technology, and centralized detection and automatic monitoring of stress of the supports can be achieved in real time.
4. The locating plate that distributes at the upper base plate bottom surface through article font, the backing plate of increaseing is installed or is taken out to breach department from three locating plate that can be quick, the efficiency that the support was increaseed is improved, the locating plate has limited the position of increaseing the backing plate from three direction, make the backing plate of increaseing can keep fine wholeness, it is difficult for taking place the dislocation each other to increasee the backing plate, the whole vertical atress of support is better like this, can also prevent to increasee the backing plate roll-off simultaneously, lead to the support height to receive the influence, and.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the base and the lower seat plate;
FIG. 3 is a schematic diagram showing the distribution of positioning plates on an embedded plate;
FIG. 4 is another schematic structural view of the present invention;
fig. 5 is a plan view structural view of the elastic body.
Reference numerals: 1-embedded plate, 2-upper seat plate, 3-lower seat plate, 4-force measuring elastic body, 41-middle elastic body, 42-annular elastic body, 5-heightening base plate, 6-spherical cap lining plate, 7-bottom basin, 8-plane sliding plate, 9-spherical sliding plate, 10-sensor, 11-positioning plate, 12-limiting plate, 13-sealing plate, 14-base and 15-replacement hole.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or that are conventionally placed when the product of the present invention is used, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in figures 1 and 3, the intelligent support with the height adjusting function comprises an embedded plate 1, a height adjusting base plate 5, an upper seat plate 2, a sliding seat, a base 14 and a lower seat plate 3, wherein the embedded plate 1 is directly embedded on the bottom surface of a beam body, the embedded plate 1 is fixedly connected with the upper seat plate 2 through bolts, the lower seat plate 3 is fixed on a bridge pier through bolts, the sliding seat and the base 14 are arranged between the upper seat plate and the lower seat plate so as to fix the whole support between the beam body and the bridge pier, the base 14 is positioned on the top surface of the lower seat plate 3, the upper surface of the base 14 is recessed inwards to form a cavity, the lower part of the sliding seat is sleeved in the cavity, the top surface of the sliding seat is in sliding connection with the bottom surface of the upper seat plate 2, the normal buffering energy dissipation and damping functions of the support are met through the sliding of the sliding seat, and the height adjusting support has all functions of flexibility such as the bearing capacity, the heightening base plate 5 is positioned between the bottom surface of the embedded plate 1 and the top surface of the upper seat plate 2, the bottom surface of the embedded plate 1 is provided with positioning plates 11 which are distributed in a shape like a Chinese character 'pin', the positioning plates 11 are positioned on the outer side of the upper seat plate 2 and are tightly attached to the side surfaces of the upper seat plate 2 and the heightening base plate 5, when the height of the support needs to be adjusted, the effect of adjusting the height of the support is achieved by changing the number of the heightening base plates 5 between the upper seat plate 2 and the embedded plate 1, so that the stress condition of each support is changed, the heightening base plate 5 is a steel base plate, the flatness is good, the vertical stress of the support is uniform, the whole beam body is not easy to generate three-point support after the stress of each support is changed, the safety of the bridge is effectively protected, the heightening base plates 5 can be rapidly installed or taken out from the gaps, locating plate 11 has restricted the position of heightening backing plate 5 from three direction, make heightening backing plate 5 can keep fine wholeness, all the focus of heightening backing plate 5 all can be on same straight line, heightening backing plate 5 is difficult for taking place the dislocation each other, the whole vertical atress of support is better like this, locating plate 11 be located the bedplate 2 outside and with last bedplate 2, heighten the side of backing plate 5 and closely laminate, 11 bottoms of locating plate extend to the side of bedplate 2, locating plate 11 can also prevent heightening backing plate 5 roll-off simultaneously like this, lead to the support height to receive the influence, and then influence the security of bridge.
Example 2
As shown in fig. 1 and 5, by installing the force measuring elastic body 4 at the bottom of the cavity, the lower surface of the sliding seat is attached to the upper surface of the force measuring elastic body 4, the side surface of the base 14 is installed with the sensor 10, the measuring end of the sensor 10 is in close contact with the side surface of the force measuring elastic body 4, the force measuring elastic body 4 is a solid elastic material which has the characteristic similar to fluid and is incompressible in volume under a certain pressure state, and when the force measuring elastic body 4 is subjected to the compressive stress of the upper structure, the magnitude of the compressive stress can be constantly transmitted to all directions by the force measuring elastic body 4; the force-measuring elastic body 4 is designed to be formed by combining a middle elastic body 41 and an annular elastic body 42, the force-measuring elastic body 4 is easy to damage under the condition of long-term compression and needs to be completely replaced during replacement, so that the force-measuring elastic body 4 is divided into the middle elastic body 41 and the annular elastic body 42, the annular elastic body 42 is arranged in the circumferential direction of the middle elastic body 41 and is attached to the side surface of the middle elastic body 41, the transmission of the stress of the middle elastic body 41 cannot be influenced, the two elastic bodies can be replaced separately during later-period damage, the whole replacement is not needed, the material cost is saved, a sensor 10 is arranged on the side surface of a base 14, and the measuring end of the sensor 10 is in close; the sensor 10 is an alloy film resistance type pressure sensor, the sensor has small and exquisite appearance, high measurement precision (up to 0.2 grade and above), strong corrosion resistance and vibration resistance, can accurately measure in a wide temperature region (-200 ℃ -100 ℃) and accords with the external environment of the use of the support, a force measuring system adopts a signal wire to transmit a pressure wavelength signal output by sensing the pressure stress change of the force measuring elastic body 4 by the sensor 10 to a demodulator, the demodulator analyzes and processes the wavelength signal and transmits the wavelength signal to a computer through a wireless network or a wired network to process, then the actual load of the support is visually displayed and compared with the normal use load of the support, and an alarm is given when abnormality occurs, so that the load of the support is remotely monitored, and the height of the support is timely adjusted and processed.
Example 3
As shown in fig. 2, replacement holes 15 for installing the sensor 10 are formed in the circumferential direction of the base 14, the replacement holes 15 are four and distributed in the circumferential direction of the base 14 in a cross shape, the four replacement holes 15 distributed in the circumferential direction of the base 14 in a cross shape are formed, the replacement holes 15 are convenient for an operator to pass by hands, the sensor 10 is directly and manually fixed on the side surface of the force measuring elastic body 4 in a bonding mode, so that the operator can accurately know whether the sensor 10 is installed in place or not, the normal operation of the support force measuring system is ensured, the operator can directly feel that the sensor 10 is in contact with the side wall of the force measuring supporting body 4, the installation position of the sensor 10 can be directly observed through the replacement holes 15, when the sensor 10 is removed or replaced, the sensor 10 and the side wall of the base 14 are directly and manually removed and replaced, and no threaded connection exists, the sensor 10 is more rapid to install and disassemble, whether the sensor 10 is installed in place or not can be known in time, the installation time is greatly saved, and time and labor are saved.
The opening part of the replacing hole 15 is provided with a sealing plate fixed on the base 14, the sealing plate 13 is used for sealing the replacing hole 15, so that impurities are prevented from entering, the pollution sensor 10 influences the function of the replacing hole, and the accuracy of monitoring data is guaranteed.
Example 4
As shown in fig. 1, the sliding seat comprises a spherical cap lining plate 6 and a bottom basin 7 located on the bottom surface of the spherical cap lining plate 6, the bottom surface of the spherical cap lining plate 6 is a convex spherical surface, the top surface of the bottom basin 7 is provided with a concave spherical surface matched with the spherical cap lining plate 6, and the bottom surface of the spherical cap lining plate 6 and the top surface of the bottom basin 7 form a spherical pair connection.
Be equipped with spherical surface slide 9 between spherical crown welt 6 and end basin 7, spherical surface slide 9 inlays end basin 7 upper surface, spherical surface slide 9 is polytetrafluoroethylene slide or modified polytetrafluoroethylene slide, spherical surface slide 9 inlays in the recess of end basin 7 concave spherical surface through binder bonding mode cooperation screw or anchor mode fastening, the binder is insoluble and thermosetting, the protruding spherical surface of spherical crown welt 6 can adopt cladding stainless steel board or electroplate hard chrome to handle, strengthens its smoothness and wearability.
A plane sliding plate 8 is arranged between the spherical crown lining plate 6 and the upper seat plate 2, the plane sliding plate 8 is embedded on the upper surface of the spherical crown lining plate 6, the upper seat plate 2 and the spherical crown lining plate 6 form a plane sliding friction pair, the plane sliding plate 8 is a polytetrafluoroethylene sliding plate or a modified polytetrafluoroethylene sliding plate, and the plane sliding friction pair meets the requirement of displacement of the beam body during expansion caused by heat and contraction caused by cold; the bottom surface of the upper seat plate 2 can also be provided with a mirror surface stainless steel sliding plate matched with the plane sliding plate 8, so that the smoothness and the wear resistance of the upper seat plate are enhanced.
Example 5
As shown in fig. 1, 2 bottom surface circumference of upper plate is equipped with round limiting plate 12, and limiting plate 12 is located the end basin 14 outside, and limiting plate 12 closes on and contactless with end basin 14 side, and limiting plate 12 and upper plate 2 prevent end basin 14 landing through welding or integrated into one piece, avoid falling the roof beam risk.
Example 6
As shown in fig. 4, according to another embodiment of the present invention, the embedded plate 1 is disposed on the bottom surface of the lower seat plate 3, the embedded plate 1 is connected to the pier through the anchor bolt, the height-adjusting base plate 5 is disposed between the lower seat plate 3 and the embedded plate 2, and the embedded plate 1 is disposed on the bottom surface of the lower seat plate 3, so that the number of the height-adjusting base plates 5 between the lower seat plate 3 and the embedded plate 1 is changed to adjust the height of the support, thereby changing the stress of the support, and other force-measuring and spacing settings are the same as those of the above-described embodiment.
The principle of the invention is as follows: firstly, a support is arranged between a beam body and a pier, by utilizing the characteristics that when a force-measuring elastic body 4 bears pressure in a cavity, the pressure is uniform at each part in the cavity, the positive pressure is basically the same as the pressure of the force-measuring elastic body 4 to the base side, the end of a sensor 10 arranged on the outer side surface of the force-measuring elastic body 4 senses the pressure stress change of the force-measuring elastic body 4 and outputs a pressure wavelength signal to a demodulator, the demodulator analyzes and processes the wavelength signal and transmits the wavelength signal to a computer for processing through a wireless network or a wired network, then the actual load of the support is visually displayed and compared with the normal use load of the support, when abnormal occurs, an alarm is given to realize the remote monitoring of the load of the support, then the height of the support bearing with abnormal stress is adjusted, the beam body is jacked for a certain distance, the anchor bolt of the support is unscrewed, make the atress of each support even, then screw up the anchor bolt, accomplish support altitude mixture control, if need change sensor 10, directly open shrouding 13, operating personnel singlehanded stretches into from changing hole 15, will treat the sensor 10 of changing and take out, installs new sensor 10, with shrouding 13 reconversion, sensor 10 changes convenient and fast high-efficient.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.