CN220690058U - Three-dimensional displacement monitoring device of integrated structure high-precision shock insulation support - Google Patents
Three-dimensional displacement monitoring device of integrated structure high-precision shock insulation support Download PDFInfo
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- CN220690058U CN220690058U CN202321807866.4U CN202321807866U CN220690058U CN 220690058 U CN220690058 U CN 220690058U CN 202321807866 U CN202321807866 U CN 202321807866U CN 220690058 U CN220690058 U CN 220690058U
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Abstract
The utility model relates to the technical field of vibration isolation support displacement monitoring, in particular to a high-precision vibration isolation support three-dimensional displacement monitoring device with an integrated structure. Including the base, fixed mounting has first angle sensor on the base, first angle sensor's measuring stick top is through first transmission coupling mechanism fixedly connected with first U type seat, rotates through the pivot in the first U type seat and is connected with the mount pad, the top fixedly connected with linear displacement sensor of mount pad, one side fixedly connected with second U type seat of first U type seat, fixed mounting has second angle sensor in the side support board of first U type seat one end is kept away from to the second U type seat, second angle sensor's measuring stick passes through second transmission coupling mechanism and linear displacement sensor's lateral wall fixed connection. The three-dimensional displacement of the shock insulation support can be measured simultaneously through the device, so that friction errors and multi-axis accumulated errors generated by adopting three displacement measuring devices to install the sliding groove mechanism are reduced, and the measurement accuracy is improved.
Description
Technical Field
The utility model relates to the technical field of vibration isolation support displacement monitoring, in particular to a high-precision vibration isolation support three-dimensional displacement monitoring device with an integrated structure.
Background
The shock insulation support is used as a key component in a shock insulation structure system, and the performance and the health state of the shock insulation support are critical to the shock resistance and the safety performance of a building. During construction and use, the shock-insulating support inevitably causes structural system damage accumulation due to the influence of complex self and environmental load effects. If timely diagnosis and repair are not available, the shock resistance of the support is reduced, and the risk of casualties and economic losses caused by earthquakes is further increased. Therefore, the health status of the shock-insulating support in complex and variable environments is a focus of attention of many researchers.
The conventional detection mode of the shock insulation support is to detach the shock insulation support to be detected, and evaluate the safety state of the shock insulation support according to appearance inspection. Along with the rapid development of sensor technology, wireless communication and other technologies, the vibration isolation support displacement monitoring system is widely applied in some engineering fields, realizes the displacement monitoring of the vibration isolation support, and evaluates the health state of the vibration isolation support.
In the prior art, three intelligent flexible displacement meters are arranged on a shock insulation support to monitor deformation conditions of the shock insulation support in the X, Y, Z direction, and Chinese patent publication No. CN212153728U discloses a building shock insulation support monitoring device which is characterized in that three-direction displacement monitoring is realized by respectively arranging detection modules based on displacement sensors in the X, Y, Z direction on the shock insulation support; the Chinese patent publication No. CN209295936U discloses a rubber support capable of detecting displacement and a displacement measuring system thereof, and the displacement measuring system realizes the transverse and vertical displacement measurement by using a sliding component and a displacement detecting device; the Chinese patent publication No. CN216717254U discloses a three-dimensional displacement measuring device, which is used for measuring the three-dimensional relative displacement between two connecting plates of a shock insulation support by installing a displacement measuring module and a gyroscope module.
The vibration isolation support displacement monitoring device does not need to be manually operated and can detect the vibration isolation support displacement in real time, but has some limitations, and is mainly characterized in that:
1. the deformation of the shock insulation support is a compound motion, and comprises X, Y, Z displacement in three directions, three displacement measuring devices are needed to be used simultaneously when the displacement measurement is carried out, and the displacement measuring devices are provided with sliding groove mechanisms to generate friction and multiaxial accumulated errors, so that the overall measurement accuracy is reduced; 2. a plurality of displacement measuring devices are combined for use, and arranging a large number of signal transmission lines and mounting brackets causes an increase in the cost of the measuring devices; 3. the measurement of the gyroscope is based on integration of the rotation speed, when the static angle is measured, the gyroscope still outputs a certain angular velocity signal even if no object rotates due to factors such as zero offset drift and noise of the gyroscope, and in long-time monitoring, the gyroscope measurement error can be gradually accumulated in the integration process, so that the angle measurement accuracy is reduced.
Therefore, it is desirable to provide a three-dimensional displacement monitoring device for an integrated high-precision shock-insulation support to solve the problems in the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a three-dimensional displacement monitoring device of an integrated structure high-precision shock insulation support, and specifically discloses the following technical scheme:
the utility model provides an integration structure high accuracy shock insulation support three-dimensional displacement monitoring devices, its characterized in that, the on-line screen storage device comprises a base, fixed mounting has first angle sensor on the base, first angle sensor's measuring stick is vertical upwards to be set up, first angle sensor's measuring stick top is through first transmission coupling mechanism fixedly connected with first U type seat, be connected with the mount pad through the pivot rotation in the first U type seat, the top fixedly connected with linear displacement sensor of mount pad, one side of first U type seat is through screw fixedly connected with second U type seat, run through in the side support board that first U type seat one end was kept away from to the second U type seat is provided with the second mounting hole, fixed mounting has second angle sensor in the second mounting hole, second angle sensor's measuring stick is located second U type seat inboard, and through second transmission coupling mechanism and linear displacement sensor's lateral wall fixed connection, second angle sensor's measuring stick with the axial lead all is located same straight line.
Further, the base includes two L type backup pads that separate and symmetry set up each other, is connected with backup pad and lower backup pad between two L type backup pads, go up backup pad and lower backup pad parallel arrangement, it is provided with the working hole to run through in the backup pad, run through in the lower backup pad and be provided with first mounting hole, first angle sensor fixed mounting is in the first mounting hole of lower backup pad, the top of going up the backup pad corresponds the position fixed mounting of working hole has the bearing frame, install the bearing in the bearing frame, the top of first transmission coupling mechanism passes the diapire fixed connection of bearing and the first U type seat in proper order in working hole and the bearing frame.
Further, first transmission coupling mechanism includes first shaft coupling and connecting cylinder, first angle sensor's measuring stick top is connected with connecting cylinder through first shaft coupling, just first angle sensor's measuring stick first shaft coupling and connecting cylinder all are located same straight line, connecting cylinder passes the bearing in working hole and the bearing frame in proper order, connecting cylinder's top surface is provided with first screw hole, run through on the bottom plate of first U type seat and be provided with the second screw hole, the bottom plate of first U type seat passes through screw and connecting cylinder's top fixed connection.
Furthermore, the bearing seat adopts a prismatic bearing seat, and the prismatic bearing seat is fixed on the upper supporting plate through screws.
Further, the second transmission connection structure comprises a second coupler and a connecting rod, one end of the second coupler is fixedly connected with a measuring rod of the second angle sensor, the other end of the second coupler is vertically connected with the connecting rod, one end, far away from the second coupler, of the connecting rod is provided with a fixing seat, and the fixing seat is fixedly connected with the side wall of the linear displacement sensor through a screw.
Further, screw holes are formed in the top end of the mounting seat and the bottom end of the linear displacement sensor, and the mounting seat is fixedly connected with the linear displacement sensor through screws.
Further, the first angle sensor and the second angle sensor are encoder type rotation angle sensors.
Compared with the prior art, the utility model has the beneficial effects that:
the three-dimensional displacement of the shock insulation support can be measured through the displacement monitoring device with an integrated structure, so that friction errors and multi-axis accumulated errors generated by adopting three displacement measuring devices to install the sliding groove mechanism are reduced, the measuring precision is improved, and meanwhile, the cost is effectively reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic view of a structure other than the linear displacement sensor of the present utility model.
Fig. 3 is a front view of a structure other than the linear displacement sensor of the present utility model.
Fig. 4 is a partially exploded view of the present utility model.
Fig. 5 is a partially exploded view of the present utility model.
FIG. 6 is a schematic diagram of an embodiment of the present utility model.
FIG. 7 is a schematic diagram showing the sensor data vector decomposition of the initial state in the present utility model.
FIG. 8 is an exploded view of sensor data vectors for operation in the present utility model.
1-base, 2-first angle sensor, 3-first U type seat, 4-mount pad, 5-linear displacement sensor, 6-second U type seat, 7-second angle sensor, 8-bearing frame, 9-screw portion, 10-nut, 11-first shaft coupling, 12-connecting cylinder, 13-second shaft coupling, 14-connecting rod, 15-upper connecting plate, 16-lower connecting plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, an integrated structure high accuracy shock insulation support three-dimensional displacement monitoring devices, a serial communication port, including base 1, fixed mounting has first angle sensor 2 on the base 1, the measuring stick of first angle sensor 2 is vertical upwards to be set up, the measuring stick top of first angle sensor 2 is through first transmission coupling mechanism fixedly connected with first U type seat 3, be connected with mount pad 4 through the pivot rotation in the first U type seat 3, the top fixedly connected with linear displacement sensor 5 of mount pad 4, one side of first U type seat 3 is through screw fixedly connected with second U type seat 6, run through in the side support board of second U type seat 6 from first U type seat 3 one end and be provided with the second mounting hole, fixed mounting has second angle sensor 7 in the second mounting hole, the measuring stick of second angle sensor 7 is located second U type seat 6 inboard, and through second transmission coupling mechanism and linear displacement sensor 5's lateral wall fixedly connected with each other, second angle sensor 7 and the equal axial lead of pivot are located.
In this embodiment, base 1 includes two L type backup pads that separate each other and symmetry set up, is connected with backup pad and lower backup pad between two L type backup pads, go up backup pad and lower backup pad parallel arrangement, run through in the backup pad and be provided with the working hole, run through in the lower backup pad and be provided with first mounting hole, first angle sensor 2 fixed mounting is in the first mounting hole of lower backup pad, the top of going up the backup pad corresponds the position fixed mounting of working hole has bearing frame 8, install the bearing in the bearing frame 8, the top of first transmission coupling mechanism passes the bearing in working hole and the bearing frame 8 in proper order and the diapire fixed connection of first U type seat 3.
In this embodiment, the first angle sensor 2 and the second angle sensor 7 are both provided with a threaded portion 9, the first angle sensor 2 is fixed in the first mounting hole by a nut, and the second angle sensor 7 is fixed in the second mounting hole by a nut 10.
In this embodiment, first transmission coupling mechanism includes first shaft coupling 11 and connection cylinder 12, the measuring stick top of first angle sensor 2 is connected with connection cylinder 12 through first shaft coupling 11, just the measuring stick of first angle sensor 2 first shaft coupling 11 and connection cylinder 12 all are located same straight line, connection cylinder 12 passes the bearing in working hole and the bearing frame 8 in proper order, the top surface of connection cylinder 12 is provided with first screw hole, run through on the bottom plate of first U type seat 3 and be provided with the second screw hole, the bottom plate of first U type seat 3 passes through screw and the top fixed connection of connection cylinder 12. The bearing seat 8 and the bearing are arranged to not only reduce friction, but also limit the connecting cylinder 12, thereby ensuring the stability of the rotation of the connecting cylinder. When the linear displacement sensor 5 rotates in the horizontal direction, the first U-shaped seat 3 and the mounting seat 4 are driven to integrally rotate, the connecting cylinder 12 is driven to rotate, the connecting cylinder 12 drives the first coupler 11 to rotate, the measuring rod of the first angle sensor 2 is driven to rotate, and the first angle sensor 2 can measure the rotation angle of the linear displacement sensor 5.
In this embodiment, the bearing seat 8 is a prismatic bearing seat, and the prismatic bearing seat is fixed on the upper support plate by a screw.
In this embodiment, the second transmission connection structure includes second shaft coupling 13 and connecting rod 14, the one end of second shaft coupling 13 and the measuring stick fixed connection of second angle sensor 7, the other end and the connecting rod 14 of second shaft coupling 13 are connected perpendicularly, the one end that second shaft coupling 13 was kept away from to connecting rod 14 is provided with the fixing base, the fixing base passes through screw and the lateral wall fixed connection of linear displacement sensor 5. When the linear displacement sensor 5 generates angle change in the vertical direction, the connecting rod 14 is driven to rotate, and the connecting rod 14 transmits the elevation angle change to a measuring rod of the second angle sensor 7 through the second coupler 13, so that the elevation angle change of the linear displacement sensor 5 is measured through the second angle sensor 7.
In this embodiment, the threaded holes are formed in the top end of the mounting seat 4 and the bottom end of the linear displacement sensor 5, and the mounting seat 4 is fixedly connected with the linear displacement sensor 5 through screws, so that the mounting seat is convenient to detach and fix.
In this embodiment, the first angle sensor 2 and the second angle sensor 7 are encoder-type rotation angle sensors, and the encoder-type rotation angle sensors have low zero drift and noise, and high measurement accuracy.
The linear displacement sensor 5 in this embodiment adopts a resistance strain type displacement sensor based on an equal-strength cantilever structure, that is, a resistance strain gauge is stuck on the surface of the equal-strength cantilever, a measurement guide rod of the linear displacement sensor 5 drives the free end of the equal-strength cantilever to deform, the strain gauge and the equal-strength cantilever deform cooperatively, the resistance value of the strain gauge changes along with the deformation, and the strain gauge is converted into voltage change through a bridge circuit.
The utility model also comprises temperature compensation for the device, thereby further improving the measurement precision, and the compensation mode mainly comprises the following two modes:
and (3) hardware compensation: the hardware temperature compensation is realized by adopting a method of combining a strain gauge with temperature self-compensation and a double-arm differential bridge, and the two strain gauges are respectively stuck on the upper surface and the lower surface of the same area of the cantilever beam and are in the same temperature field, but the stress states are opposite. When the cantilever beam is deformed, one resistance of the strain gauge is increased, and the other resistance is reduced, at the moment, the temperature influence on the resistance values of the two strain gauges is the same, and the strain gauges are connected into two adjacent bridge arms of the double-arm differential bridge, so that the temperature influence on the strain gauges can be counteracted in the bridge, and the influence of temperature errors is eliminated.
And (3) software compensation: in order to further reduce the influence of temperature drift on the integrated structure high-precision vibration isolation support three-dimensional displacement monitoring device, a high-precision temperature sensor is adopted to collect temperature information in real time, and a software linear temperature compensation model is built based on a least square method.
A series of displacement measurement data is collected using displacement sensors at different temperatures. Ensuring that there are enough data points throughout the temperature range. When the sensor input displacement and the real-time temperature are Tem, the least square method is used for fitting the measured output U of the sensor, and then the fitting output y of the displacement sensor is fitted, and the fitting function is shown as follows:
y＝a×Tem+b
wherein a and b are fitting function coefficients, and different values can be obtained for different displacements.
The output after the temperature compensation model based on the least square method is compensated is:
in U Datum For the sensor output when the temperature is the reference temperature, U Actual measurement Is the actual output of the sensor.
In actual use, the device is arranged between the upper connecting plate 15 and the lower connecting plate 16 of the shock insulation support, the base is fixed on the lower connecting plate through screws, the top end of the linear displacement sensor is in contact with the upper connecting plate, the rotation angle and elevation angle data are acquired in real time through the first angle sensor and the second angle sensor, and the three-dimensional displacement value of the shock insulation support can be obtained through vector decomposition calculation by combining the rotation angle and elevation angle data with the tensile displacement data of the linear displacement sensor.
The vector decomposition principle of the sensor data is as follows:
referring to fig. 7-8, fig. 7 is an initial state of the integrated structure high precision vibration isolation support three-dimensional displacement monitoring device, and fig. 8 is a state that the integrated structure high precision vibration isolation support three-dimensional displacement monitoring device stretches and rotates after following the movement of the vibration isolation support upper connecting plate.
The initial position of the top end of the measuring guide rod is A 0 (x 0 ,y 0 ,z 0 ) The position after stretching and rotation is A t (x t ,y t ,z t )。
Initially, the displacement sensor initially detects a length L 0 The initial elevation angle alpha is acquired by combining a second angle sensor 0 The initial rotation angle beta 0 is acquired by the first angle sensor, and the initial displacement initial values of the X axis, the Y axis and the Z axis at the initial moment can be calculated by a trigonometric function formula, wherein the initial displacement initial values are respectively as follows:
X 0 ＝L 0 cosα 0 cosβ 0
Y 0 ＝L 0 cosα 0 sinβ 0
Z 0 ＝L 0 sinα 0
when the shock insulation support deforms and displaces, the linear displacement sensor simultaneously stretches and rotates along with the motion of the shock insulation support, and the stretching length is L t The elevation angle and the rotation angle become alpha respectively t 、β t The displacement values of the X axis, the Y axis and the Z axis after stretching and rotation can be calculated as follows:
X t ＝L t cosα t cosβ t
Y t ＝L t cosα t sinβ t
Z t ＝L t sinα t
finally, the three-dimensional displacement values of the shock insulation support can be obtained as follows: ΔX t ＝L t cosα t cosβ t -L 0 cosα 0 cosβ 0
ΔY t ＝L t cosα t sinβ t -L 0 cosα 0 sinβ 0
ΔZ t ＝L t sinα t -L 0 sinα 0
Based on the method, the three-dimensional displacement monitoring device of the integrated structure high-precision shock insulation support measures the stretching displacement, the elevation angle and the rotation angle, and displacement values in the X, Y, Z directions can be obtained through vector decomposition calculation, so that the three-dimensional displacement measurement of the shock insulation support is realized.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (7)
1. The utility model provides an integration structure high accuracy shock insulation support three-dimensional displacement monitoring devices, its characterized in that, the on-line screen storage device comprises a base, fixed mounting has first angle sensor on the base, first angle sensor's measuring stick is vertical upwards to be set up, first angle sensor's measuring stick top is through first transmission coupling mechanism fixedly connected with first U type seat, be connected with the mount pad through the pivot rotation in the first U type seat, the top fixedly connected with linear displacement sensor of mount pad, one side of first U type seat is through screw fixedly connected with second U type seat, run through in the side support board that first U type seat one end was kept away from to the second U type seat is provided with the second mounting hole, fixed mounting has second angle sensor in the second mounting hole, second angle sensor's measuring stick is located second U type seat inboard, and through second transmission coupling mechanism and linear displacement sensor's lateral wall fixed connection, second angle sensor's measuring stick with the axial lead all is located same straight line.
2. The integrated structure high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 1, wherein the base comprises two L-shaped support plates which are arranged at intervals and symmetrically, an upper support plate and a lower support plate are connected between the two L-shaped support plates, the upper support plate and the lower support plate are arranged in parallel, a working hole is formed in the upper support plate in a penetrating mode, a first mounting hole is formed in the lower support plate in a penetrating mode, the first angle sensor is fixedly mounted in the first mounting hole of the lower support plate, a bearing seat is fixedly mounted at the top end of the upper support plate corresponding to the position of the working hole, a bearing is mounted in the bearing seat, and the top end of the first transmission connecting mechanism sequentially penetrates through the working hole and the bearing in the bearing seat to be fixedly connected with the bottom wall of the first U-shaped seat.
3. The integrated structure high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 2, wherein the first transmission connection mechanism comprises a first coupler and a connection cylinder, the top end of a measuring rod of the first angle sensor is connected with the connection cylinder through the first coupler, the measuring rod of the first angle sensor, the first coupler and the connection cylinder are all positioned on the same straight line, the connection cylinder sequentially penetrates through a working hole and a bearing in a bearing seat, a first threaded hole is formed in the top surface of the connection cylinder, a second threaded hole is formed in the bottom plate of the first U-shaped seat in a penetrating mode, and the bottom plate of the first U-shaped seat is fixedly connected with the top end of the connection cylinder through a screw.
4. The integrated structural high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 2, wherein the bearing seat is a prismatic bearing seat, and the prismatic bearing seat is fixed on the upper support plate through screws.
5. The integrated structure high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 1, wherein the second transmission connection mechanism comprises a second coupler and a connecting rod, one end of the second coupler is fixedly connected with a measuring rod of the second angle sensor, the other end of the second coupler is vertically connected with the connecting rod, one end, far away from the second coupler, of the connecting rod is provided with a fixing seat, and the fixing seat is fixedly connected with the side wall of the linear displacement sensor through a screw.
6. The integrated structure high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 1, wherein threaded holes are formed in the top end of the mounting seat and the bottom end of the linear displacement sensor, and the mounting seat is fixedly connected with the linear displacement sensor through screws.
7. The integrated structural high-precision vibration isolation support three-dimensional displacement monitoring device according to claim 1, wherein the first angle sensor and the second angle sensor are encoder type rotation angle sensors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321807866.4U CN220690058U (en) | 2023-07-11 | 2023-07-11 | Three-dimensional displacement monitoring device of integrated structure high-precision shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321807866.4U CN220690058U (en) | 2023-07-11 | 2023-07-11 | Three-dimensional displacement monitoring device of integrated structure high-precision shock insulation support |
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| CN220690058U true CN220690058U (en) | 2024-03-29 |
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| CN202321807866.4U Active CN220690058U (en) | 2023-07-11 | 2023-07-11 | Three-dimensional displacement monitoring device of integrated structure high-precision shock insulation support |
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