A three-way adjustable exciter support and force sensor connection device

Abstract

The present invention relates to the technical field of engineering structure test devices, and in particular to a three-way adjustable exciter support and force sensor connection device used in tunnel scale test, including a steel connector, an arc-shaped steel sheet, a bracket device, an exciter and a force sensor, wherein the exciter is fixed on the bracket device, the upper part of the steel connector is connected to the exciter, the lower part of the steel connector is connected to the force sensor, the arc-shaped steel sheet is arranged below the force sensor, and is glued to the vibrated position of the model pipe segment. The exciter is connected to the upper part of the steel connector, and the force sensor is connected to the lower part of the steel connector, so that the real-time output excitation force applied by the exciter to the structure can be conveniently recorded during the test. The arc-shaped steel sheet can avoid damage to the pipe segment in the tunnel scale model. The bracket device can provide effective support for the exciter in a limited test space, and can conveniently adjust the space size, so as to meet the application of scale tests of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of engineering structure test devices, and in particular to a three-way adjustable exciter support and force sensor connection device used in tunnel scale test. Background Art

[0002] In recent years, with the rapid development of urban underground transportation systems, the disturbance of vibration and noise generated by subway trains on tunnel segments and surrounding rocks has attracted more and more attention. Since field tests are greatly affected by the environment and the test costs are high, it is very common to use indoor scaled models to study the mechanical properties of tunnel segments and surrounding rocks under subway operation vibration. The vibration of subway trains is usually simulated by exciter vibration. However, due to the small diameter of the tunnel segments in scaled tests and limited test space, it is very important to design a structure that can provide effective support for the exciter and a device that records dynamic forces in real time. However, the current device cannot meet the above requirements. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a three-way adjustable exciter support and force sensor connection device, which can provide effective support for the exciter in a smaller tunnel segment model, while conveniently recording the exciting force of the exciter on the tunnel segment in real time and ensuring that the position of applying the exciting force remains unchanged, while avoiding damage to the tunnel segment due to stress concentration.

[0004] In order to achieve the above object, the technical solution applied by the present invention is as follows:

[0005] A three-way adjustable exciter support and force sensor connection device used in tunnel scale test, comprising a steel connector, an arc-shaped steel sheet, a bracket device, an exciter and a force sensor, wherein the exciter is fixed on the bracket device, the upper part of the steel connector is connected to the exciter, the lower part of the steel connector is connected to the force sensor, the arc-shaped steel sheet is arranged below the force sensor and is glued to the vibrated position of the model segment.

[0006] Furthermore, a groove is provided in the middle of the upper surface of the arc-shaped steel sheet, the groove is directly opposite to the bottom of the force sensor, the size of the groove is slightly larger than the size of the force sensor, and the rotation radius of the bottom surface of the arc-shaped steel sheet is the same as that of the tunnel segment.

[0007] Furthermore, the steel connecting member includes a vertical rod and a circular disk, the vertical rod is fixed on the circular disk, the vertical rod is connected to the vibration exciter, and the circular disk is connected to the force sensor.

[0008] Furthermore, an internal threaded hole is provided in the vertical rod, and an exciter threaded rod is provided on the exciter. The exciter threaded rod and the internal threaded hole are arranged in cooperation to realize a fixed connection between the vertical rod and the exciter.

[0009] Furthermore, the disk and the force sensor are both provided with screw holes, and the disk and the force sensor are fixedly connected by a connecting bolt.

[0010] Furthermore, the support device includes a U-shaped steel plate, two L-shaped angle steels, two horizontal cross bars, two rotating blocks, two vertical spiral rods and two rectangular bases. The lower parts of the two vertical spiral rods are respectively fixed to the two rectangular bases, and the upper parts of the two vertical spiral rods are respectively fixed to the two rotating blocks by fixing bolts. The two rotating blocks are respectively buckled on the two horizontal cross bars, and the two horizontal cross bars are respectively fixed to the two ends of the two L-shaped angle steels, and the U-shaped steel plate is fixed to the middle of the two L-shaped angle steels.

[0011] Furthermore, the U-shaped steel plate is fixedly connected to the vibration exciter via connecting bolt 2.

[0012] Furthermore, the U-shaped steel plate is fixed to the L-shaped angle steel by connecting bolts three.

[0013] Furthermore, the horizontal cross bar is fixed to both ends of the L-shaped angle steel by connecting bolts four.

[0014] Furthermore, a plurality of bolt holes cooperating with the connecting bolts 4 are respectively provided at both ends of the L-shaped angle steel.

[0015] Beneficial effects of the present invention:

[0016] 1) The designed steel connector can connect the force sensor and the exciter, so that the dynamic force applied by the exciter to the structure can be easily recorded during the test;

[0017] 2) The arc-shaped steel sheet arranged at the bottom of the force sensor can avoid damage to the pipe segment in the tunnel scale model, and the groove can save vertical space in the tunnel model and help ensure that the excitation point of the exciter remains in a fixed position;

[0018] 3) The bracket device can provide effective support for the exciter in a limited test space, and can conveniently adjust the space size to meet the application of scaled tests of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the exciter support and force sensor connection device;

[0020] Figure 2 It is the front view of the vibration exciter support and force sensor connection device;

[0021] Figure 3 It is a top view of the exciter support and force sensor connection device;

[0022] Figure 4 It is a schematic diagram of the structure of the steel connector connecting the vibrator and the force sensor.

[0023] 1. Steel connector; 10. Vertical rod; 11. Internal threaded hole; 12. Connecting bolt 1; 13. Disc; 2. Arc-shaped steel sheet; 21. Groove; 3. Bracket device; 31. U-shaped steel plate; 311. Connecting bolt 2; 312. Connecting bolt 3; 32. L-shaped angle steel; 321. Bolt hole; 322. Connecting bolt 4; 33. Horizontal cross bar; 331. Rotating block; 34. Vertical spiral rod; 341. Fixing bolt; 35. Rectangular base; 4. Vibrator; 41. Vibrator threaded rod; 5. Force sensor. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1 to 4 As shown, the present invention discloses a three-way adjustable exciter support and force sensor connection device for tunnel scale test, comprising a steel connector 1, an arc-shaped steel sheet 2, a bracket device 3, an exciter 4 and a force sensor 5. The exciter 4 is fixed on the bracket device 3, the upper part of the steel connector 1 is connected to the exciter 4, the lower part of the steel connector 1 is connected to the force sensor 5, and the arc-shaped steel sheet 2 is arranged below the force sensor 5 and is glued to the vibrated position of the model pipe segment. With such a structural setting, the exciter 4 is connected to the upper part of the steel connector 1, and the force sensor 5 is connected to the lower part of the steel connector 1, so that the real-time output excitation force applied by the exciter 4 to the structure can be conveniently recorded during the test. The arc-shaped steel sheet 2 placed below the force sensor 5 can avoid damage to the pipe segment in the tunnel scale model. The bracket device 3 can provide effective support for the exciter 4 in a limited test space, and can conveniently adjust the space size, so as to meet the application of scale tests of different sizes.

[0026] More specifically, a groove 21 is provided in the middle of the upper surface of the arc-shaped steel sheet 2, and the groove 21 is directly opposite to the bottom of the force sensor 5. The size of the groove 21 is slightly larger than the size of the force sensor 5, and the rotation radius of the bottom surface of the arc-shaped steel sheet 2 is the same as that of the tunnel segment. With such a structural setting, the groove 21 can save vertical space in the tunnel model and is conducive to ensuring that the excitation point of the exciter 4 remains at a fixed position.

[0027] More specifically, the steel connector 1 includes a vertical rod 10 and a disk 13, the vertical rod 10 is fixed on the disk 13, the vertical rod 10 is connected to the vibration exciter 4, and the disk 13 is connected to the force sensor 5. With such a structural arrangement, a fixed connection relationship between the steel connector 1 and the vibration exciter 4 and the force sensor 5 is achieved.

[0028] More specifically, an internal threaded hole 11 is provided in the vertical rod 10, and an exciter threaded rod 41 is provided on the exciter 4. The exciter threaded rod 41 cooperates with the internal threaded hole 11 to realize a fixed connection between the vertical rod 10 and the exciter 4. With such a structural arrangement, a fixed connection relationship between the steel connector 1 and the lower part of the exciter 4 is realized.

[0029] More specifically, screw holes are provided on the disk 13 and the force sensor 5, and the disk 13 and the force sensor 5 are fixedly connected by connecting bolts 12. With such a structural arrangement, a fixed connection relationship between the steel connector 1 and the force sensor 5 is achieved.

[0030] More specifically, the support device 3 includes a U-shaped steel plate 31, two L-shaped angle steels 32, two horizontal cross bars 33, two rotating blocks 331, two vertical spiral rods 34 and two rectangular bases 35. The lower parts of the two vertical spiral rods 34 are fixed to the two rectangular bases 35, respectively. The upper parts of the two vertical spiral rods 34 are fixed to the two rotating blocks 331 by fixing bolts 341, respectively. The two rotating blocks 331 are buckled on the two horizontal cross bars 33, respectively. The two horizontal cross bars 33 are fixed to the two ends of the two L-shaped angle steels 32, respectively. The U-shaped steel plate 31 is fixed to the middle of the two L-shaped angle steels 32. With such a structural setting, the support device 3 can provide effective support for the exciter 4 in a limited test space, and can conveniently adjust the space size, which can meet the application of scaled tests of different sizes.

[0031] In practical applications, the design of the L-shaped angle steel 32 can increase the rigidity while saving space, limit the offset and torsion of the exciter 4, and improve the stability of the support of the exciter 4.

[0032] In practical applications, the position of the horizontal cross bar 33 on the spiral rod 34 can be adjusted by adjusting the fixing bolt 341 .

[0033] In practical applications, concrete blocks can be conveniently piled on the upper portion of the rectangular base 35 to enhance the overall stability of the bracket device 3 during use.

[0034] More specifically, the U-shaped steel plate 31 is fixedly connected to the vibration exciter 4 by connecting bolts 311. With such a structural arrangement, the upper part of the vibration exciter 4 is fixed to the U-shaped steel plate 31.

[0035] More specifically, the U-shaped steel plate 31 is fixed to the L-shaped angle steel 32 by connecting bolts 312. With such a structural arrangement, the U-shaped steel plate 31 is fixed to the L-shaped angle steel 32 to limit its position and prevent its displacement.

[0036] More specifically, the horizontal cross bar 33 is fixed to both ends of the L-shaped angle steel 32 by connecting bolts 322. Both ends of the L-shaped angle steel 32 are respectively provided with a plurality of bolt holes 321 arranged in cooperation with the connecting bolts 322. With such a structural arrangement, the dimension of the bracket device 3 in the width direction can be adjusted.

[0037] The technical solutions in the embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all belong to the protection scope of the present invention.

Claims

1. A three-way adjustable exciter support and force sensor connection device used in tunnel scale test, characterized in that: The invention comprises a steel connecting member (1), an arc-shaped steel sheet (2), a bracket device (3), an exciter (4) and a force sensor (5), wherein the exciter (4) is fixed on the bracket device (3), the upper part of the steel connecting member (1) is connected to the exciter (4), the lower part of the steel connecting member (1) is connected to the force sensor (5), and the arc-shaped steel sheet (2) is arranged below the force sensor (5) and is glued to the vibrated position of the model pipe segment; A groove (21) is provided in the middle of the upper surface of the arc-shaped steel sheet (2), the groove (21) is directly opposite to the lower side of the force sensor (5), the size of the groove (21) is slightly larger than the size of the force sensor (5), and the radius of gyration of the bottom surface of the arc-shaped steel sheet (2) is the same as that of the tunnel segment; The steel connecting member (1) comprises a vertical rod (10) and a circular disk (13), wherein the vertical rod (10) is fixed on the circular disk (13), the vertical rod (10) is connected to a vibration exciter (4), and the circular disk (13) is connected to a force sensor (5).

2. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 1, characterized in that: An internal threaded hole (11) is provided in the vertical rod (10), and an exciter threaded rod (41) is provided on the exciter (4). The exciter threaded rod (41) and the internal threaded hole (11) are arranged in cooperation to realize a fixed connection between the vertical rod (10) and the exciter (4).

3. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 1, characterized in that: The disk (13) and the force sensor (5) are both provided with screw holes, and the disk (13) and the force sensor (5) are fixedly connected via a connecting bolt (12).

4. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 1, characterized in that: The support device (3) comprises a U-shaped steel plate (31), two L-shaped angle steels (32), two horizontal cross bars (33), two rotating blocks (331), two vertical spiral rods (34) and two rectangular bases (35). The lower parts of the two vertical spiral rods (34) are respectively fixed to the two rectangular bases (35). The upper parts of the two vertical spiral rods (34) are respectively fixed to the two rotating blocks (331) by fixing bolts (341). The two rotating blocks (331) are respectively buckled on the two horizontal cross bars (33). The two horizontal cross bars (33) are respectively fixed to the two ends of the two L-shaped angle steels (32). The U-shaped steel plate (31) is fixed to the middle parts of the two L-shaped angle steels (32).

5. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 4, characterized in that: The U-shaped steel plate (31) is fixedly connected to the vibration exciter (4) via a second connecting bolt (311).

6. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 4, characterized in that: The U-shaped steel plate (31) is fixed to the L-shaped angle steel (32) by means of connecting bolts (312).

7. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 4, characterized in that: The horizontal cross bar (33) is fixed to both ends of the L-shaped angle steel (32) by connecting bolts (322).

8. The three-way adjustable exciter support and force sensor connection device used in tunnel scale test according to claim 7, characterized in that: Both ends of the L-shaped angle steel (32) are respectively provided with a plurality of bolt holes (321) arranged in cooperation with the connecting bolts 322.

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