Device and method for detecting horizontal rigidity of steel spring vibration isolation support

Abstract

The invention relates to the technical field of measurement, in particular to a device for detecting the horizontal rigidity of a steel spring vibration isolation support. Comprising a steel spring vibration isolation support, a fixed stand column and a first fixed plate which are arranged on one side of the steel spring vibration isolation support, a reaction wall arranged on one side, opposite to the fixed stand column, of the steel spring vibration isolation support, and a first jack, a force sensor assembly and a second fixed plate which are connected with the reaction wall and are horizontally arranged; the first fixing plate and the reaction wall are connected through fixing steel bars. The distance between the first fixing plate and the reaction wall is adjustable, and the second fixing plate abuts against the steel spring vibration isolation support. The steel spring vibration isolation support comprises an upper seat plate, a vertical spring and a lower seat plate from top to bottom, the upper seat plate and the lower seat plate are each composed of a top plate, a bottom plate and a spring located between the top plate and the bottom plate, the second fixing plate is connected between the steel spring vibration isolation support and the force sensor assembly, and the top of the upper seat plate is fixedly connected with a second jack. The device is simple in structure and accurate in measurement structure.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a device and method for detecting the horizontal stiffness of a steel spring vibration isolation support. Background Art

[0002] Due to the special location of the subway building, it is often affected by the vibration caused by rail transit and the secondary structural noise, which may cause damage to the building life, use function and people's health, and it is necessary to take corresponding vibration reduction and noise reduction technical measures. Steel spring vibration isolation bearings can play a good role in vibration reduction and noise reduction. With the rapid development of the railway industry, especially the continuous speed increase in recent years, the quality and safety requirements for subway buildings are getting higher and higher. There is an urgent need to solve the existing steel spring vibration isolation bearing experimental problems, such as how to test and calculate the vertical stiffness, horizontal stiffness and horizontal force of the newly designed steel spring vibration isolation bearing.

[0003] However, most existing experimental platforms can only test vertical stiffness, and the vertical spring compression is high, so it is impossible to test the horizontal stiffness of the spring, or the detection device has a complex structure and complex 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 above background technology and provide a detection device and apparatus that can achieve high efficiency, low cost and high precision measurement of the horizontal stiffness of the steel spring vibration isolation support.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is: a device for detecting the horizontal stiffness of a steel spring vibration isolation support, comprising: a steel spring vibration isolation support, a fixed column and a first fixed plate arranged on one side of the steel spring vibration isolation support, and a reaction wall arranged on the side of the steel spring vibration isolation support opposite to the fixed column, a first jack connected to the reaction wall, a force sensor assembly and a second fixed plate, the first jack being used to apply a horizontal force to the steel spring vibration isolation support; the first fixed plate and the reaction wall being connected by fixed steel bars; the first fixed plate and the second fixed plate both being against the steel spring vibration isolation support; The steel spring vibration isolation support includes an upper seat plate, a vertical spring and a lower seat plate from top to bottom. The upper seat plate and the lower seat plate are both composed of a top plate, a bottom plate and a spring located between the top plate and the bottom plate. The top plate and the bottom plate can be displaced relative to each other. The 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 seat plate. The other end of the second jack is connected to a fixed column. The second jack is used to apply a vertical force to the steel spring vibration isolation support.

[0006] In one embodiment, a width of the second fixing plate in the vertical direction is greater than a distance between a bottom plate of the upper seat plate and a top plate of the lower seat plate.

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

[0008] In one embodiment, the spring between the top plate and the bottom plate generates a displacement in a horizontal direction when compressed.

[0009] In one embodiment, the top plate and the bottom plate of the upper seat plate and the lower seat plate are connected by a detachable connecting plate.

[0010] In one embodiment, the force sensor assembly includes a force receiver and a force display.

[0011] Based on the same inventive concept, a detection method using the detection device for the horizontal stiffness of the steel spring vibration isolation support as described above is also provided, comprising: removing a detachable connecting plate; A vertical force is applied to the steel spring vibration isolation support through the second jack; the vertical force is applied to the vertical static stiffness of the vibration isolator through And the vertical displacement value of the isolator vertical spring Calculated; Adjust the position of the first fixing plate so that it abuts against the side edge of the top plate of the upper seat plate; Apply horizontal force to the steel spring vibration isolation support through the first jack , the magnitude of the horizontal force is obtained through the force sensor assembly; In the process of horizontal displacement from 0 to the maximum horizontal displacement of the spring, select multiple random displacements as feature points. When applying horizontal force to the feature point, stop applying the horizontal force. After the data displayed by the force sensor component to be tested is stable, record the data and use a vernier caliper to record the displacement of the feature point. ; The horizontal static stiffness value is obtained based on the measured data.

[0012] In one embodiment, the horizontal static stiffness value is obtained by the following method: according to the weight of the steel spring vibration isolation support , the friction between the steel spring vibration isolation support and the experimental platform , the horizontal force applied by the first jack , vertical static stiffness of isolator , vertical displacement value of vibration isolator , horizontal displacement value of the isolator , horizontal static stiffness value Calculate, that is .

[0013] 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 force and vertical force in the horizontal and vertical directions respectively through two jacks, and stabilize the steel spring vibration isolation support between the first fixed plate and the second fixed plate. By adjusting the first fixed plate and the second fixed plate, the steel spring vibration isolation support can be supported and fixed to prevent displacement, and then the horizontal force is measured by the force sensor assembly. Combined with the 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 horizontal displacement of the vertical spring on the detection of the horizontal displacement of the spring is prevented. The above-mentioned measuring device has a simple structure, low cost, does not require a large-scale measuring machine, and can accurately measure the horizontal stiffness of the steel spring vibration isolation support. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic structural diagram of a device for detecting the horizontal stiffness of a steel spring vibration isolation support according to an embodiment; Figure 2 It is a side view of the device for measuring the horizontal stiffness of the spring of the steel spring vibration isolation support; Figure 3 It is a schematic diagram of the steel spring vibration isolation support structure. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0017] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0018] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0019] See also Figure 1-3A device for detecting the horizontal stiffness of a steel spring vibration isolation support in one embodiment includes a reaction wall 101, a first jack 102, a force sensor assembly 103, a second fixed plate 104, and a fixed column 106 and a first fixed plate 107 arranged on the other side of the steel spring vibration isolation support. The first fixed plate 107 and the reaction wall 101 are connected by a fixed steel bar 108. The second jack 105 is located at the top of the steel spring vibration isolation support and is connected to the fixed column 106.

[0020] 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 is used to apply a vertical force to the steel spring vibration isolation support.

[0021] Specifically, the steel spring vibration isolation support is composed of an upper seat plate 201, a lower seat plate 203 and a vertical spring 202 located between the upper seat plate 201 and the lower seat plate 203. The upper seat plate 201 is composed of an upper seat plate top plate 2011, an upper seat plate spring 2012, an upper seat plate bottom plate 2013 and a detachable connecting plate 2014. The lower seat plate 203 is composed of a lower seat plate top plate 2031, a lower seat plate spring 2032 and a lower seat plate bottom plate 2033. The upper seat plate 201 and the lower seat plate 203 top plate and bottom plate can be displaced relative to each other. The detachable connecting plate 214 is used to connect the upper seat plate top plate 2011 and the upper seat plate bottom plate 2013. Similarly, there is a similar detachable connecting plate between the lower seat plate top plate 2031 and the lower seat plate bottom plate 2033. The second fixed 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 the vertical displacement are measured with a vernier caliper.

[0022] 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 allows the bottom plate 2013 of the upper seat plate and the top plate 2031 of the lower seat plate to be subjected to horizontal thrust together, thereby preventing the horizontal displacement of the vertical spring 202 from affecting the detection of the horizontal displacement of the spring, and improving the accuracy of measuring the horizontal stiffness of the spring. 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.

[0023] The second jack 105 provides vertical force to increase the bottom friction, so that the horizontal deformation changes evenly when the horizontal force is applied by the first jack 102, and the vertical force is applied in advance to prevent the detection from being affected by the warping of the top plate of the upper seat plate 201, thereby improving the measurement accuracy.

[0024] The first fixing plate 107 is connected to the reaction wall 101 through the fixing steel bar 108 to prevent the top plate of the upper seat plate 201 from horizontal displacement. At the same time, it is easy to disassemble and can meet the horizontal stiffness test of the spring of the steel spring vibration isolation support with different specifications, thereby improving work efficiency.

[0025] According to another aspect of the present invention, a method for measuring the horizontal stiffness of a steel spring vibration isolation support is provided, the method comprising the following steps: S10, remove the detachable connecting plate 2014, apply a vertical force to the steel spring vibration isolation support through the second jack 105, and the vertical force is applied to the vertical static stiffness of the vibration isolator And the vertical displacement value of the isolator vertical spring Calculated.

[0026] S20, adjust the position of the first fixing plate 107 so that it just contacts the top plate of the upper seat plate 201, and the reaction wall 101 and the first fixing plate 107 fix the top plate 2011 of the upper seat plate of the steel spring vibration isolation support through the fixing steel bar 108 to prevent the top plate 2011 of the upper seat plate from moving; S30, use the first jack 102 to apply horizontal force to the steel spring vibration isolation support , the magnitude of the horizontal force Obtained through a load cell assembly; S40, in the process of horizontal displacement from 0 to the maximum horizontal displacement of the spring, select multiple random displacements as feature points, apply horizontal force, stop applying horizontal force when reaching the feature point, record the data after the force display data is stable, and use a vernier caliper to record the displacement of the feature point .

[0027] S50, after obtaining the measured data, according to the weight of the steel spring vibration isolation support , the friction between the steel spring vibration isolation support and the experimental platform , the horizontal force applied by the first thousand jin 102 , vertical static stiffness of isolator , vertical displacement value of vibration isolator , horizontal displacement value of the isolator , horizontal static stiffness value Calculate, that is .

[0028] The detection device and method for the horizontal stiffness of the steel spring vibration isolation support of the present invention provide horizontal force and vertical force in the horizontal and vertical directions respectively through two jacks, and stabilize the steel spring vibration isolation support between the first fixed plate 107 and the 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, and then the horizontal force is measured by the force sensor assembly 103. Combined with the 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 horizontal displacement of the vertical spring on the detection of the horizontal displacement of the spring is prevented. The above-mentioned measuring device has a simple structure, low cost, does not require a large-scale measuring machine, 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 support, characterized in that: It comprises a steel spring vibration isolation support, a fixed column and a first fixed plate arranged on one side of the steel spring vibration isolation support, a reaction wall arranged on the side of the steel spring vibration isolation support opposite to the fixed column, a first jack connected to the reaction wall and arranged horizontally, 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 support; the first fixed plate and the reaction wall are connected by fixed steel bars; the spacing between the first fixed plate and the reaction wall is adjustable, and the second fixed plate is against the steel spring vibration isolation support; The steel spring vibration isolation support includes an upper seat plate, a vertical spring and a lower seat plate from top to bottom. The upper seat plate and the lower seat plate are both composed of a top plate, a bottom plate and a spring located between the top plate and the bottom plate. The top plate and the bottom plate can be displaced relative to each other. The 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 seat plate. The other end of the second jack is connected to a fixed column. The second jack is used to apply a vertical force to the steel spring vibration isolation support.

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

5. The device for detecting horizontal stiffness of a steel spring vibration isolation support according to claim 1, characterized in that: The top plate and the bottom plate of the upper seat plate and the lower seat plate are connected by a detachable connecting plate.

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

7. A method for testing the horizontal stiffness of a steel spring vibration isolation support using the testing device according to any one of claims 1 to 6, characterized in that: include: Remove the removable connecting plate; Apply vertical force to the steel spring vibration isolation support through the second jack; Vertical force passes through the vertical static stiffness of the isolator And the vertical displacement value of the isolator vertical spring Calculated; Adjust the position of the first fixing plate so that it abuts against the side edge of the top plate of the upper seat plate; Apply horizontal force to the steel spring vibration isolation support through the first jack , the magnitude of the horizontal force is obtained through the force sensor assembly; In the process of horizontal displacement from 0 to the maximum horizontal displacement of the spring, select multiple random displacements as feature points. When applying horizontal force to the feature point, stop applying the horizontal force. After the data displayed by the force sensor component to be tested is stable, record the data and use a vernier caliper to record the displacement of the feature point. ; The horizontal static stiffness value is obtained based on the measured data.

8. The device for detecting horizontal stiffness of a steel spring vibration isolation support according to claim 7, characterized in that: The horizontal static stiffness value is obtained by the following method: according to the weight of the steel spring vibration isolation support , the friction between the steel spring vibration isolation support and the experimental platform , the horizontal force applied by the first jack , vertical static stiffness of isolator , vertical displacement value of vibration isolator , horizontal displacement value of the isolator , horizontal static stiffness value Calculate, that is .

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