Spring floating slab vibration isolator force measuring system

Abstract

The utility model relates to a force measuring system for a spring floating slab vibration isolator. The force measuring system comprises a hydraulic pump, a hydraulic pressure gauge, a hydraulic jack, a jacking bracket and a displacement sensor, the hydraulic pump, the hydraulic pressure gauge and the hydraulic jack are connected through oil pipes. The hydraulic jack and the jacking support are fixedly connected to form a whole. The displacement sensor is located on the jacking support and used for monitoring changes of vertical displacement of the vibration isolator. And the jacking bracket is mounted below the jacking layer of the outer sleeve. And the stress value of the vibration isolator is converted according to the relationship between the displacement of the vibration isolator and the numerical value of the hydraulic pressure gauge when the hydraulic pump is loaded. The system is simple to operate and high in calculation precision.

Description

Technical Field

[0001] This utility model relates to the field of track vibration reduction technology, and in particular to a force measurement system for a spring floating plate vibration isolator. Background Technology

[0002] With the rapid development of urban subway construction in my country, the increasing number of subway lines in major cities, and the renovation of existing subway lines, spring floating slab track vibration isolation technology has received attention and application from designers and users. During subway operation, vibration isolators in floating slab track beds may experience uneven stress or even be suspended due to inadequate initial jacking or subsequent localized settlement of the foundation, severely affecting the stability of train operation. At the same time, the service life of vibration isolators subjected to high stress is also significantly reduced.

[0003] Therefore, measuring the stress on vibration isolators in operating lines is particularly important. By measuring the stress on each vibration isolator, a solid basis can be provided for subsequent adjustments to the stress on the vibration isolators. In existing technology, it is often simple to determine whether the vibration isolator is under stress by using tools after removing the locking plate, but the magnitude of the stress on an individual vibration isolator cannot be determined. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a high-precision, simple-structured hydraulic force measurement system for spring-loaded floating plate vibration isolators.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A force measurement system for a spring-loaded floating plate vibration isolator includes an outer sleeve, an isolator installed inside the outer sleeve, a lifting bracket above the isolator, the lifting bracket being fixed below the lifting layer of the outer sleeve, and a hydraulic force measuring mechanism installed on the lifting bracket for measuring the force on the vibration isolator.

[0007] As a further technical solution of this utility model: the hydraulic force measuring mechanism includes a hydraulic pump and a hydraulic jack. The hydraulic pump and the hydraulic jack are connected by an oil pipe. The hydraulic jack is installed on the lifting bracket. The hydraulic jack is loaded and supported by the hydraulic pump to support the vibration isolator.

[0008] As a further technical solution of this utility model: the hydraulic force measuring mechanism also includes a hydraulic gauge, which is installed on the oil pipe for testing the jacking force value of the hydraulic jack.

[0009] As a further technical solution of this utility model: the hydraulic force measuring mechanism also includes a displacement sensor, which is installed on the lifting bracket.

[0010] As a further technical solution of this utility model: the hydraulic jack and the lifting bracket are connected as a whole by means of threads and welding.

[0011] As a further technical solution of this utility model: the combination of the hydraulic gauge and the hydraulic jack can be calibrated to convert the pressure value of the hydraulic gauge into the lifting force value of the hydraulic jack.

[0012] As a further technical solution of this utility model: the hydraulic pump is a manual hydraulic pump or an electric hydraulic pump.

[0013] As a further technical solution of this utility model: the shape of the lifting bracket matches the lifting layer arrangement of the outer sleeve.

[0014] As a further technical solution of this utility model: the displacement sensor is a laser displacement sensor or a mechanical displacement sensor.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. The hydraulic force measuring system of the spring isolator of this utility model has a simple structure and is easy to carry.

[0017] 2. The hydraulic force measuring system for spring isolators of this utility model can measure the force on the isolator without disassembling the isolator locking plate.

[0018] 3. This utility model can measure the force value of the vibration isolator with high precision by loading. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Reference numerals in the attached diagram: 1. Outer sleeve; 2. Vibration isolator; 3. Lifting support; 4. Hydraulic pump; 5. Hydraulic jack; 6. Oil pipe; 7. Hydraulic gauge; 8. Displacement sensor. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Example 1:

[0025] Reference Figure 1 The present invention discloses a force measurement system for a spring floating plate vibration isolator, comprising an outer sleeve 1, an isolator 2 installed inside the outer sleeve 1, a lifting bracket 3 above the isolator 2, the lifting bracket 3 being fixed below the lifting layer of the outer sleeve 1, and a hydraulic force measuring mechanism installed on the lifting bracket 3 for measuring the force on the isolator 2.

[0026] The hydraulic force measuring mechanism includes a hydraulic pump 4 and a hydraulic jack 5, which are connected by an oil pipe 6. The hydraulic jack 5 is mounted on the lifting support 3 and is loaded by the hydraulic pump 4 to support the vibration isolator 2. The hydraulic force measuring mechanism also includes a hydraulic gauge 7, which is mounted on the oil pipe 6 and used to test the lifting force value of the hydraulic jack 5. The hydraulic force measuring mechanism also includes a displacement sensor 8, which is mounted on the lifting support 3 or the hydraulic jack 5.

[0027] The hydraulic jack 5 and the lifting bracket 3 are connected as a whole by threads and welding. The combination of hydraulic gauge 7 and hydraulic jack 5 can be calibrated to convert the pressure value of hydraulic gauge 7 into the lifting force value of hydraulic jack 5.

[0028] Hydraulic pump 4 is either a manual or electric hydraulic pump. The shape of the lifting support 3 matches the lifting layer arrangement of the outer sleeve 1. Displacement sensor 8 is either a laser displacement sensor or a mechanical displacement sensor.

[0029] Hydraulic pump 4 is used to load hydraulic jack 5, lifting bracket 3 is used to provide support reaction force, hydraulic gauge 7 is used to calculate the lifting force value of hydraulic jack 5, and displacement sensor 8 is used to monitor the vertical displacement of the upper surface of vibration isolator 2 when hydraulic jack 5 is loaded.

[0030] As attached Figure 1 The hydraulic force measurement system is installed as shown. The hydraulic pump 4 drives the hydraulic jack 5 to advance. When the hydraulic gauge 7 shows a small pressure value, the displacement sensor 8 begins recording the displacement value. Loading continues until a specified displacement value s is reached, at which point the pressure value of the hydraulic gauge 7 is recorded. Based on the pre-calibrated results, the jacking force F1 of the hydraulic jack 5 at the specified displacement is calculated. Subtracting the displacement value from this jacking force and multiplying it by the stiffness k of the vibration isolator 2 gives the force F acting on the vibration isolator 2, i.e., F = F1 - s * k.

[0031] Example 2:

[0032] As attached Figure 1 The hydraulic force measurement system is installed as shown. The hydraulic pump 4 drives the hydraulic jack 5 to advance. When the hydraulic gauge 7 shows a small pressure value, the displacement sensor 8 begins recording its displacement value. Loading continues until the hydraulic gauge 7 reaches a specified pressure value (the jacking force corresponding to this pressure value is calculated using pre-calibrated results). The displacement sensor 8's displacement value s1 is recorded at this point. Dividing the jacking force value by the stiffness k of the vibration isolator 2 gives the displacement s2 of the vibration isolator 2 under no-load conditions. Subtracting s1 from s2 and multiplying by the stiffness of the vibration isolator 26 gives the force F acting on the vibration isolator 2, i.e., F = (s2 - s1) * k = (F1 / k - s1) * k.

[0033] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A force measuring system for a spring-loaded floating plate vibration isolator, comprising an outer sleeve (1), an isolator (2) installed inside the outer sleeve (1), a lifting bracket (3) disposed above the isolator (2), the lifting bracket (3) being fixed below the lifting layer of the outer sleeve (1), characterized in that, A hydraulic force measuring mechanism is installed on the lifting support (3), which is used to measure the force on the vibration isolator (2).

2. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 1, characterized in that, The hydraulic force measuring mechanism includes a hydraulic pump (4) and a hydraulic jack (5). The hydraulic pump (4) and the hydraulic jack (5) are connected by an oil pipe (6). The hydraulic jack (5) is installed on the lifting bracket (3). The hydraulic jack (5) is loaded and supported by the hydraulic pump (4) to hold the vibration isolator (2).

3. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 2, characterized in that, The hydraulic force measuring mechanism also includes a hydraulic gauge (7), which is installed on the oil pipe (6) to test the jacking force value of the hydraulic jack (5).

4. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 2, characterized in that, The hydraulic force measuring mechanism also includes a displacement sensor (8), which is mounted on the lifting bracket (3).

5. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 2, characterized in that, The hydraulic jack (5) and the lifting bracket (3) are connected as a whole by threads and welding.

6. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 3, characterized in that, The combination of the hydraulic gauge (7) and the hydraulic jack (5) can be calibrated to convert the pressure value of the hydraulic gauge (7) into the lifting force value of the hydraulic jack (5).

7. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 2, characterized in that, The hydraulic pump (4) is a manual hydraulic pump or an electric hydraulic pump.

8. The force measurement system for a spring-loaded floating plate vibration isolator according to claim 1, characterized in that, The shape of the lifting support (3) matches the lifting layer arrangement of the outer sleeve (1).

9. The force measuring system for a spring-loaded floating plate vibration isolator according to claim 4, characterized in that, The displacement sensor (8) is a laser displacement sensor or a mechanical displacement sensor.

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