Spring floating slab vibration isolator force measuring system

Abstract

The utility model relates to a spring floating slab vibration isolator force measuring system, which comprises an outer sleeve, a jacking support, a jacking screw rod and a torque wrench, the outer sleeve is arranged above a vibration isolator, the jacking support is arranged in the outer sleeve, the jacking screw rod is in threaded connection with the jacking support, and the torque wrench is arranged on the jacking support. One end of the jacking screw penetrates through the jacking support to abut against the top of the vibration isolator. The bottom of the torque wrench is integrally formed and fixedly connected with a counter-force arm, and the counter-force arm is detachably and fixedly connected with the jacking screw. The device is simple in structure, low in weight and convenient to carry and use, and the stress of the vibration isolator can be measured without dismounting the locking plate of the vibration isolator.

Description

Technical Field

[0001] The utility model relates to the technical field of track vibration reduction, in particular to a spring floating plate vibration isolator force measuring system. Background Art

[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 lines, spring floating slab vibration isolation and reduction technology has attracted significant attention and application from designers and users. During subway operations, the isolators in the floating slab trackbed can experience uneven force or even become suspended due to insufficient initial jacking or subsequent localized subgrade settlement, seriously impacting the smoothness of train operation. Furthermore, the service life of isolators subjected to greater forces is significantly reduced. Therefore, measuring the force applied to isolators on operating lines is particularly important. Measuring the force applied to each isolator provides a solid basis for subsequent adjustments.

[0003] In the prior art, it is often simply determined whether the vibration isolator is under stress by using tools after the locking plate is disassembled, but the magnitude of the stress on a single vibration isolator cannot be determined. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a spring floating plate isolator force measurement system.

[0005] The above-mentioned utility model object of the present invention is achieved through the following technical solutions:

[0006] A spring floating plate isolator force measurement system includes an outer sleeve, a jacking bracket, a jacking screw, and a torque wrench. The outer sleeve is arranged above the isolator, the jacking bracket is installed in the outer sleeve, the jacking screw is threadedly connected to the jacking bracket, and one end of the jacking screw passes through the jacking bracket and abuts against the top of the isolator.

[0007] The bottom of the torque wrench is integrally formed with a reaction arm that is fixedly connected thereto, and the reaction arm is detachably fixedly connected to the lifting screw.

[0008] As a further technical solution of the present invention: the torque wrench has a built-in rotation angle sensor and a torque sensor.

[0009] As a further technical solution of the present invention: the reaction arm is detachably fixedly connected to the outer sleeve, and the reaction arm acts on the outer sleeve.

[0010] As a further technical solution of the present invention: the reaction arm is detachably fixedly connected to the jacking bracket, and the reaction arm acts on the jacking bracket.

[0011] As a further technical solution of the present invention: an outer wall of the jacking screw is provided with an external thread, a through hole with an internal thread is opened in the center of the jacking bracket, and the external thread matches the internal thread.

[0012] As a further technical solution of the present invention: the shape of the jacking bracket matches the jacking layer of the outer sleeve.

[0013] As a further technical solution of the present invention: the angle sensor in the torque wrench can convert the vertical displacement of the lifting screw together with the external thread pitch of the lifting screw, and the torque sensor in the torque wrench can convert the torque into the lifting force value of the lifting screw through calibration.

[0014] As a further technical solution of the present invention: an adjustment gasket is provided on one end of the jacking screw rod close to the vibration isolator.

[0015] In summary, the present invention has at least one of the following beneficial technical effects:

[0016] 1. The utility model discloses a spring floating plate isolator force measurement system, which has a simple structure, low weight and is easy to carry and use.

[0017] 2. This spring isolator force measurement system can measure the force on the isolator without removing the isolator locking plate.

[0018] 3. This spring isolator force measurement system can measure the isolator force value more accurately by loading. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a top view of the relationship between the lifting bracket and the outer sleeve of the utility model.

[0021] Figure numerals: 1, outer sleeve; 2, jacking bracket; 3, jacking screw; 4, torque wrench; 5, vibration isolator; 6, reaction arm; 7, adjustment gasket; 8, locking plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on 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.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0025] Example 1:

[0026] Reference Figure 1 and Figure 2 , which is a spring floating plate isolator force measuring system disclosed in the utility model, including an outer sleeve 1, a lifting bracket 2, a lifting screw 3 and a torque wrench 4. The outer sleeve 1 is arranged above the vibration isolator 5, the lifting bracket 2 is installed in the outer sleeve 1, the lifting screw 3 is threadedly connected to the lifting bracket 2, and one end of the lifting screw 3 passes through the lifting bracket 2 and abuts against the top of the vibration isolator 5; the bottom of the torque wrench 4 is integrally formed with a reaction arm 6 fixedly connected, and the reaction arm 6 is detachably fixedly connected to the lifting screw 3.

[0027] The torque wrench 4 has a built-in rotation angle sensor and a torque sensor. The reaction arm 6 is detachably fixedly connected to the outer sleeve 1 and acts on the outer sleeve 1. The reaction arm 6 is detachably fixedly connected to the lifting bracket 2 and acts on the lifting bracket 2.

[0028] The outer wall of the lifting screw rod 3 is provided with an external thread, and the center of the lifting bracket 2 is provided with a through hole with an internal thread, and the external thread matches the internal thread. The shape of the lifting bracket 2 matches the lifting layer of the outer sleeve 1.

[0029] In this embodiment, the reaction arm 6 and the torque wrench 4 are combined into a whole, the external thread of the jacking screw 3 passes through the internal thread at the center of the jacking bracket 2; the torque wrench 4 is connected to the jacking screw 3; the jacking bracket 2 is installed at the lower part of the jacking layer of the outer sleeve 1, and the plane position relationship between the jacking bracket 2 and the outer sleeve 1 is shown in the attached figure. Figure 2 ; The end of the lifting screw 3 presses against the upper surface of the vibration isolator 5.

[0030] The angle sensor in the torque wrench 4, in conjunction with the external thread pitch of the jacking screw 3, can calculate the vertical displacement of the jacking screw 3. The torque sensor in the torque wrench 4 can be calibrated to convert the torque into the jacking force of the jacking screw 3. An adjustment washer 7 is provided on the end of the jacking screw 3 near the vibration isolator 5. A locking plate 8 is installed inside the outer sleeve 1. One end of the jacking screw 3 passes through the jacking bracket 2, the locking plate 8, and the adjustment washer 7, and then rests on the upper surface of the vibration isolator 5.

[0031] Example 2:

[0032] Step 1: Remove the locking plate 8 and adjustment gasket 7 on the vibration isolator 5 to make the vibration isolator 5 in a relaxed state. Install the jacking bracket 2, jacking screw 3, reaction arm 6 and torque wrench 4 in this manner. Load the torque wrench 4 to a specific torque and record the rotation angle of the jacking screw 3 corresponding to the torque (the angle sensor starts working after the torque wrench 4 generates torque, that is, the angle is not recorded in the idling state). Step 2: As shown in the attached Figure 1 As shown, install the jacking bracket 2, jacking screw 3, reaction arm 6, and torque wrench 4 in this order. Load the torque wrench 4 to the same torque as in the first step, and record the rotation angle of the jacking screw 3. Convert the difference in rotation angle between the first and second steps into a displacement difference (the vertical displacement of the jacking screw 3 per one rotation is the pitch of the jacking screw 3). Multiply this by the stiffness of the vibration isolator 5 to obtain the pressure applied to the vibration isolator 5.

[0033] Example 3:

[0034] Step 1: Place a pressure sensor under the lifting screw 3, load the torque wrench 4 and use the pressure sensor to calibrate the conversion coefficient k between the torque and the lifting force of the system. Step 2: As shown in the attached figure Figure 1 As shown, install the lifting bracket 2, lifting screw 3, reaction arm 6, and torque wrench 4 in this order. Slowly load the torque wrench 4 until the torque wrench 4's angle sensor generates a certain angle value (the angle sensor starts working after the torque wrench 4 generates torque, that is, the angle is not recorded in the idling state). Record the torque value of the torque wrench 4 at this time and convert it into the lifting force F1 of the lifting screw 3 by multiplying it by the coefficient k generated in the first step. Convert the loaded angle value into the vertical displacement of the lifting screw 3 and multiply it by the stiffness value of the vibration isolator 5 to obtain the force F2 generated under this displacement. F1 minus F2 is the pressure value on the vibration isolator 5.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A spring floating plate isolator force measurement system, characterized in that: The invention comprises an outer sleeve (1), a lifting bracket (2), a lifting screw (3) and a torque wrench (4), wherein the outer sleeve (1) is arranged above a vibration isolator (5), the lifting bracket (2) is installed in the outer sleeve (1), the lifting screw (3) is threadedly connected to the lifting bracket (2), and one end of the lifting screw (3) passes through the lifting bracket (2) and abuts against the top of the vibration isolator (5); The bottom of the torque wrench (4) is integrally formed and fixedly connected with a reaction arm (6), and the reaction arm (6) is detachably fixedly connected to the lifting screw (3).

2. The spring floating plate isolator force measurement system according to claim 1, characterized in that: The torque wrench (4) has a built-in rotation angle sensor and a torque sensor.

3. The spring floating plate isolator force measurement system according to claim 1, characterized in that: The reaction arm (6) is detachably fixedly connected to the outer sleeve (1), and the reaction arm (6) acts on the outer sleeve (1).

4. The spring floating plate isolator force measurement system according to claim 1, characterized in that: The reaction arm (6) is detachably fixedly connected to the lifting bracket (2), and the reaction arm (6) acts on the lifting bracket (2).

5. The spring floating plate isolator force measurement system according to claim 1, characterized in that: The outer wall of the lifting screw rod (3) is provided with an external thread, and the center of the lifting bracket (2) is provided with a through hole with an internal thread, and the external thread matches the internal thread.

6. The spring floating plate isolator force measurement system according to claim 1, characterized in that: The outer shape of the lifting bracket (2) matches the lifting layer of the outer sleeve (1).

7. The spring floating plate isolator force measurement system according to claim 2, characterized in that: The rotation angle sensor in the torque wrench (4) can be used together with the external thread pitch of the lifting screw (3) to convert the vertical displacement of the lifting screw (3). The torque sensor in the torque wrench (4) can be calibrated to convert the torque into the lifting force value of the lifting screw (3).

8. The spring floating plate isolator force measurement system according to claim 1, characterized in that: An adjustment washer (7) is provided on one end of the lifting screw (3) close to the vibration isolator (5).

Images