A device and method for testing the horizontal stiffness of a steel spring vibration isolation bearing.

Abstract

This invention relates to the field of measurement technology, specifically to a device for detecting the horizontal stiffness of a steel spring vibration isolation support. The device includes a steel spring vibration isolation support, a fixed column and a first fixed plate disposed on one side of the support, a reaction wall disposed on the side of the support opposite to the fixed column, a first jack connected to the reaction wall and horizontally disposed, a force sensor assembly, and a second fixed plate. The first fixed plate and the reaction wall are connected by fixed reinforcing bars. The distance between the first fixed plate and the reaction wall is adjustable. The second fixed plate abuts against the steel spring vibration isolation support. The steel spring vibration isolation support comprises, from top to bottom, an upper plate, a vertical spring, and a lower plate. Both the upper and lower plates consist of a top plate, a bottom plate, and a spring located between the top and bottom plates. The second fixed plate connects the steel spring vibration isolation support and the force sensor assembly. A second jack is fixedly connected to the top of the upper plate. The device has a simple structure and provides accurate measurements.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and more specifically, to a device and method for detecting the horizontal stiffness of a steel spring vibration isolation support. Background Technology

[0002] Due to their unique location, subway superstructures are frequently affected by vibrations from rail transit and secondary structural noise, which can damage the building's lifespan, functionality, and public health. Therefore, appropriate vibration reduction and noise reduction technologies are necessary. Steel spring vibration isolation bearings can effectively reduce vibration and noise. With the rapid development of the railway industry, especially the increasing speed requirements in recent years, the quality and safety requirements for subway superstructures are becoming increasingly stringent. There is an urgent need to address existing experimental issues related to steel spring vibration isolation bearings, such as how to test and calculate the vertical stiffness, horizontal stiffness, and horizontal force of newly designed steel spring vibration isolation bearings.

[0003] However, most existing experimental platforms can only test vertical stiffness, and since vertical springs are highly compressed, they cannot test the horizontal stiffness of springs, or the testing devices are complex in structure and operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the background art above, and to provide a detection device and apparatus that can achieve high efficiency, low cost and high precision in measuring the horizontal stiffness of steel spring vibration isolation bearings.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by the present invention is as follows: a detection device for the horizontal stiffness of a steel spring vibration isolation bearing, comprising: a steel spring vibration isolation bearing, a fixed column and a first fixed plate disposed on one side of the steel spring vibration isolation bearing, a reaction wall disposed on the side of the steel spring vibration isolation bearing opposite to the fixed column, a first jack connected to the reaction wall, a force sensor assembly, and a second fixed plate, wherein the first jack is used to apply a horizontal force to the steel spring vibration isolation bearing; the first fixed plate and the reaction wall are connected by fixed reinforcing bars; both the first fixed plate and the second fixed plate abut against the steel spring vibration isolation bearing;

[0006] The steel spring vibration isolation support comprises, from top to bottom, an upper base plate, a vertical spring, and a lower base plate. Both the upper and lower base plates consist of a top plate, a bottom plate, and a spring located between the top and bottom plates. The top and bottom plates can be moved relative to each other. A second fixed plate is connected between the steel spring vibration isolation support and the force sensor assembly. A second jack is fixedly connected to the top of the upper base plate, and the other end of the second jack is connected to a fixed column. The second jack is used to apply vertical force to the steel spring vibration isolation support.

[0007] In one embodiment, the width of the second fixing plate in the vertical direction is greater than the distance between the bottom plate of the upper seat plate and the top plate of the lower seat plate.

[0008] In one embodiment, the width of the second fixing plate in the vertical direction is greater than the distance between the top plate of the upper seat plate and the bottom plate of the lower seat plate.

[0009] In one embodiment, the spring between the top plate and the bottom plate generates horizontal displacement when compressed.

[0010] In one embodiment, the top and bottom plates of the upper and lower seat plates are connected by detachable connecting plates.

[0011] In one embodiment, the force sensor assembly includes a force receiver and a force display.

[0012] Based on the same inventive concept, a detection method is also provided for a detection device using the steel spring vibration isolation support horizontal stiffness as described above, comprising: removing the detachable connecting plate;

[0013] A vertical force is applied to the steel spring vibration isolation support through the second jack; the vertical force is transmitted through the vertical static stiffness of the vibration isolator. Vertical displacement value of the isolator vertical spring Calculated;

[0014] Adjust the position of the first fixing plate so that it abuts against the side of the top plate of the upper seat plate;

[0015] A horizontal force is applied to the steel spring vibration isolation support by the first jack. The magnitude of the horizontal force is obtained through a force sensor assembly;

[0016] During the horizontal displacement from 0 to the maximum horizontal displacement of the spring, multiple random displacement values ​​are selected as characteristic points. When a horizontal force is applied to a characteristic point, the application of the horizontal force is stopped. After the data displayed by the force sensor component stabilizes, the data is recorded, and the displacement of the characteristic point is recorded using a vernier caliper. ;

[0017] The horizontal static stiffness value is obtained based on the measurement data.

[0018] In one embodiment, the horizontal static stiffness value is obtained by the following method: based on the weight of the steel spring vibration isolation bearing. Friction between the steel spring vibration isolation support and the experimental platform The horizontal force applied by the first jack Vertical static stiffness of vibration isolators Vertical displacement value of vibration isolator Horizontal displacement value of vibration isolator Regarding the horizontal static stiffness value Perform calculations, that is .

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The detection device and method for the horizontal stiffness of the steel spring vibration isolation support of the present invention provide horizontal and vertical forces respectively in the horizontal and vertical directions using two jacks, stabilizing the steel spring vibration isolation support between the first and second fixed plates. By adjusting the first and second fixed plates, the steel spring vibration isolation support can be supported and fixed to prevent displacement. Then, the horizontal force is measured by a force sensor assembly. Combined with displacement and related parameters, the horizontal stiffness of the vertical spring and the horizontal stiffness of the upper and lower seat plate springs can be obtained, and the influence of the vertical spring horizontal displacement on the detection of the spring horizontal displacement is prevented. The above-mentioned measuring device has a simple structure, low cost, does not require large measuring machines, and can accurately measure the horizontal stiffness of the steel spring vibration isolation support. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a device for detecting the horizontal stiffness of a steel spring vibration isolation support according to one embodiment.

[0022] Figure 2 This is a side view of the steel spring vibration isolation support spring horizontal stiffness measuring device;

[0023] Figure 3 This is a schematic diagram of a steel spring vibration isolation support structure. Detailed Implementation

[0024] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0025] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0026] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0027] Please see Figure 1-3One embodiment of the device for detecting the horizontal stiffness of a steel spring vibration isolation support includes a reaction wall 101, a first jack 102, a force sensor assembly 103, and a second fixing plate 104 disposed on one side of the steel spring vibration isolation support; a fixing column 106 and a first fixing plate 107 disposed on the other side of the steel spring vibration isolation support; the first fixing plate 107 and the reaction wall 101 are connected by fixing steel bars 108; and the second jack 105 is located at the top of the steel spring vibration isolation support and is connected to the fixing column 106.

[0028] The first jack 102 applies a horizontal thrust to the steel spring vibration isolation support through the second fixing plate 104. The second jack 105 applies a vertical force to the steel spring vibration isolation support.

[0029] Specifically, the steel spring vibration isolation support consists of an upper support plate 201, a lower support plate 203, and a vertical spring 202 located between the upper support plate 201 and the lower support plate 203. The upper support plate 201 consists of an upper support plate top plate 2011, an upper support plate spring 2012, an upper support plate bottom plate 2013, and a detachable connecting plate 2014. The lower support plate 203 consists of a lower support plate top plate 2031, a lower support plate spring 2032, and a lower support plate bottom plate 2033. The top and bottom plates of the upper support plate 201 and the lower support plate 203 can be moved relative to each other. The detachable connecting plate 2014 is used to connect the upper support plate top plate 2011 and the upper support plate bottom plate 2013. Similarly, there is a similar detachable connecting plate between the lower support plate top plate 2031 and the lower support plate bottom plate 2033. The second fixing plate 104 is connected between the steel spring vibration isolation support and the force sensor assembly 103. The force sensor assembly 103 includes a force receiver and a force display. The force receiver receives the horizontal force applied by the first jack 102 and transmits the data to the force display. The first jack 102 is installed between the force sensor assembly 103 and the reaction wall 101. The second jack 105 is fixedly installed between the fixed column 106 and the steel spring vibration isolation support body to provide vertical force. The horizontal relative displacement and vertical displacement are measured with vernier calipers.

[0030] The width of the second fixing plate 104 in the vertical direction is greater than the distance between the bottom plate of the upper seat plate 201 and the top plate of the lower seat plate 203. The second fixing plate 104 ensures that the bottom plate 2013 of the upper seat plate and the top plate 2031 of the lower seat plate share the horizontal thrust, preventing the horizontal displacement of the vertical spring 202 from affecting the detection of the spring's horizontal displacement and improving the accuracy of the measured spring's horizontal stiffness. Preferably, the width of the second fixing plate 102 in the vertical direction is greater than the distance between the top plate of the upper seat plate 201 and the bottom plate of the lower seat plate 203.

[0031] The second jack 105 provides vertical force, increases the bottom friction, and makes the horizontal deformation change evenly when the first jack 102 applies horizontal force. In addition, the vertical force is applied in advance to prevent the top plate of the upper seat plate 201 from affecting the detection and improve the measurement accuracy.

[0032] The first fixed plate 107 is connected to the reaction wall 101 through the fixed steel bar 108 to prevent the top plate of the upper seat plate 201 from undergoing horizontal displacement. At the same time, it is easy to disassemble and can meet the horizontal stiffness test of steel spring vibration isolation supports of different specifications, thus improving work efficiency.

[0033] According to another aspect of the present invention, a method for measuring the horizontal stiffness of a steel spring vibration isolation bearing is provided, the method comprising the following steps:

[0034] S10. Remove the detachable connecting plate 2014, and apply a vertical force to the steel spring vibration isolation support using the second jack 105. The vertical force is applied through the vertical static stiffness of the vibration isolator. Vertical displacement value of the isolator vertical spring Calculated.

[0035] S20. Adjust the position 107 of the first fixed plate so that it just contacts the top plate of the upper seat plate 201. The reaction wall 101 and the first fixed plate 107 are fixed to the top plate 2011 of the upper seat plate of the steel spring vibration isolation support by fixing the steel reinforcement 108 to prevent the top plate 2011 of the upper seat plate from moving.

[0036] S30. Apply a horizontal force to the steel spring vibration isolation support using the first jack 102. Magnitude of horizontal force Obtained through a force sensor assembly;

[0037] S40. During the process of the horizontal displacement from 0 to the maximum horizontal displacement of the spring, select multiple random displacements as characteristic points, apply a horizontal force, and stop applying the horizontal force when the characteristic point is reached. After the force display data stabilizes, record the data and record the displacement of the characteristic point using a vernier caliper. .

[0038] S50. After obtaining the measurement data, based on the weight of the steel spring vibration isolation support... Friction between the steel spring vibration isolation support and the experimental platform The horizontal force applied by the first 1000 jin (102 kg) Vertical static stiffness of vibration isolators Vertical displacement value of vibration isolator Horizontal displacement value of vibration isolator Regarding the horizontal static stiffness value Perform calculations, that is .

[0039] The present invention discloses a device and method for detecting the horizontal stiffness of a steel spring vibration isolation support. Two jacks provide horizontal and vertical forces respectively in the horizontal and vertical directions, stabilizing the steel spring vibration isolation support between a first fixed plate 107 and a second fixed plate 104. By adjusting the first fixed plate 107 and the second fixed plate 104, the steel spring vibration isolation support can be supported and fixed to prevent displacement. Then, the horizontal force is measured by a force sensor assembly 103. Combined with displacement and related parameters, the horizontal stiffness of the vertical spring and the horizontal stiffness of the upper and lower seat plate springs can be obtained, preventing the influence of the vertical spring's horizontal displacement on the detection of the spring's horizontal displacement. The above-mentioned measuring device has a simple structure, low cost, does not require large measuring machines, and can accurately measure the horizontal stiffness of the steel spring vibration isolation support.

Claims

1. A device for detecting the horizontal stiffness of a steel spring vibration isolation bearing, characterized in that, The device includes a steel spring vibration isolation support, a fixed column and a first fixed plate disposed on one side of the steel spring vibration isolation support, a reaction wall disposed on the side of the steel spring vibration isolation support opposite to the fixed column, a first jack connected to the reaction wall and horizontally disposed, a force sensor assembly, and a second fixed plate. The first jack is used to apply a horizontal force to the steel spring vibration isolation support. The first fixed plate and the reaction wall are connected by fixed steel bars to prevent the top plate of the upper support plate from undergoing horizontal displacement, and are easy to disassemble. The distance between the first fixed plate and the reaction wall is adjustable. The second fixed plate abuts against the steel spring vibration isolation support. The steel spring vibration isolation support comprises, from top to bottom, an upper base plate, a vertical spring, and a lower base plate. Both the upper and lower base plates consist of a top plate, a bottom plate, and a spring located between the top and bottom plates. The top and bottom plates of the upper and lower base plates are connected by detachable connecting plates, allowing the top and bottom plates to move relative to each other. A second fixed plate is connected between the steel spring vibration isolation support and the force sensor assembly. A second jack is fixedly connected to the top of the upper base plate, and the other end of the second jack is connected to a fixed column. The second jack is used to apply vertical force to the steel spring vibration isolation support.

2. The device for detecting the horizontal stiffness of a steel spring vibration isolation support according to claim 1, characterized in that: The width of the second fixing plate in the vertical direction is greater than the distance between the bottom plate of the upper seat plate and the top plate of the lower seat plate.

3. The device for detecting the horizontal stiffness of a steel spring vibration isolation support according to claim 1, characterized in that: The width of the second fixing plate in the vertical direction is greater than the distance between the top plate of the upper seat plate and the bottom plate of the lower seat plate.

4. The device for detecting the horizontal stiffness of a steel spring vibration isolation bearing according to claim 1, characterized in that: The spring between the top plate and the bottom plate generates horizontal displacement when compressed.

5. The device for detecting the horizontal stiffness of a steel spring vibration isolation bearing according to claim 1, characterized in that: The force sensor assembly includes a force receiver and a force display.

6. A method for detecting the horizontal stiffness of a steel spring vibration isolation bearing using the detection device described in any one of claims 1 to 5, characterized in that, include: Remove the detachable connecting plate; A vertical force is applied to the steel spring vibration isolation support using the second jack; Vertical force through the vertical static stiffness of the steel spring vibration isolation support Vertical displacement value of the vertical spring of the steel spring vibration isolation bearing Calculated; Adjust the position of the first fixing plate so that it abuts against the side of the top plate of the upper seat plate; A horizontal force is applied to the steel spring vibration isolation support by the first jack. The magnitude of the horizontal force is obtained through a force sensor assembly; During the horizontal displacement from 0 to the maximum horizontal displacement of the spring, multiple random displacement values ​​are selected as feature points. When a horizontal force is applied to a feature point, the application of the horizontal force is stopped, and after the data displayed by the force sensor assembly stabilizes, the data is recorded. The displacement of the feature point is then recorded using a vernier caliper. ; The horizontal static stiffness value is obtained based on the measurement data.

7. The device for detecting the horizontal stiffness of the steel spring vibration isolation support according to claim 6, characterized in that, The horizontal static stiffness value is obtained by the following method: based on the weight of the steel spring vibration isolation bearing. Friction between the steel spring vibration isolation support and the experimental platform The horizontal force applied by the first jack Vertical static stiffness of steel spring vibration isolation bearing Vertical displacement value of the vertical spring of the steel spring vibration isolation support Horizontal displacement value of steel spring vibration isolation bearing Regarding the horizontal static stiffness value Perform calculations, that is .

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