A three-way conversion device for a one-way vibration sensor

Abstract

The present invention provides a three-way conversion device for a unidirectional vibration sensor, comprising a first bolt, a three-way conversion frame, a second bolt, and a unidirectional vibration sensor; the two ends of the first bolt are respectively fixedly connected to the tested structural member and the three-way conversion frame; a first guide groove is provided on the side parallel to the axis of the first bolt, and a second guide groove connected to all the first guide grooves is provided on the side perpendicular to the axis of the first bolt and away from the first bolt; a tightening spring is provided inside the three-way conversion frame, the two ends of the tightening spring are respectively fixedly connected to the three-way conversion frame and the end of the second bolt; the end of the second bolt away from the tightening spring is fixedly connected to the unidirectional vibration sensor. The present invention solves the problem that the vibration value of a structural member can only be tested in one direction and the other two directions cannot be tested, and that the test can be performed by pulling up the magnetic base and re-adsorbing it to the tested structural member in another direction, but due to the large magnetic force of the magnetic base, it is more troublesome to pull up and re-adsorb.

Description

Technical Field

[0001] The invention belongs to the technical field of direction conversion devices, and in particular relates to a three-direction conversion device for a unidirectional vibration sensor. Background Art

[0002] As one of the most widely used sensor types, vibration sensors play a prominent role in modern testing technology. Vibration is directional, so field testing generally requires measuring vibration values ​​in three directions of a structure.

[0003] Currently, there are two types of vibration sensors: three-dimensional vibration sensors, which can measure vibration in three directions, are expensive and primarily used in accelerometers. Unidirectional vibration sensors are relatively inexpensive and widely used in velocity sensors and accelerometers, but they can only measure vibration in one direction at a time. Unidirectional vibration sensors are widely used in field testing due to their high cost-effectiveness and wide range of applications.

[0004] There are two existing connection methods for unidirectional vibration sensors. One is that the unidirectional vibration sensor is directly bolted to the tested structural part, which can only test the vibration value of the structural part in one direction and cannot test the other two directions; the other is that the unidirectional vibration sensor is adsorbed on the tested structural part through a magnetic base. Although the test can be performed by pulling out the magnetic base and re-adsorbing it to the tested structural part in another direction, it is troublesome to pull out and re-adsorb it due to the strong magnetic force of the magnetic base. In addition, many tested structural parts are restricted by on-site conditions, so the unidirectional sensor can only be adsorbed on one surface for testing in one direction. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the present invention provides a three-way conversion device for a one-way vibration sensor.

[0006] The present invention provides a three-way conversion device for a one-way vibration sensor, which is fixedly connected to a tested structural member and comprises a first bolt, a three-way conversion frame, a second bolt and a one-way vibration sensor;

[0007] The two ends of the first bolt are respectively fixedly connected to the tested structural member and the three-way conversion frame; the three-way conversion frame is a rectangular column structure, and a first guide groove is provided on the side parallel to the axis of the first bolt, and a second guide groove connected to all the first guide grooves is provided on the side perpendicular to the axis of the first bolt and away from the first bolt; all the second guide grooves are connected to each other; a fastening spring is provided inside the three-way conversion frame, and the two ends of the fastening spring are respectively fixedly connected to the interior of the three-way conversion frame and the end of the second bolt; the end of the second bolt away from the fastening spring is fixedly connected to the unidirectional vibration sensor.

[0008] Furthermore, the three-way conversion device also includes a magnetic base that is magnetically connected to the tested structural component; a threaded hole matching the first bolt is formed on the side of the magnetic base away from the tested structural component.

[0009] Furthermore, a first limiting through hole is provided in each of the first guide grooves, the axis of the first limiting through hole being perpendicular to the side of the three-way conversion frame and parallel to the axis of the first bolt; the aperture of the first limiting through hole is larger than the slot width of the first guide groove; the diameter of the second bolt is smaller than the aperture of the first limiting through hole and larger than the slot width of the first guide groove.

[0010] Furthermore, a second limiting through hole is provided in the second guide groove, and the axis of the second limiting through hole is parallel to the axis of the first bolt; the aperture of the second limiting through hole is larger than the slot width of the second guide groove; the diameter of the second bolt is smaller than the aperture of the second limiting through hole and larger than the slot width of the second guide groove.

[0011] Furthermore, the interior of the three-way conversion frame is a hollow structure, and is provided with a fastening spring mounting pillar; the two ends of the fastening spring mounting pillar are respectively fixedly connected to the inner wall of the three-way conversion frame and the end of the fastening spring away from the second bolt.

[0012] The present invention provides a three-way conversion device for a unidirectional vibration sensor, which is fixedly connected to a tested structural member and comprises a first bolt, a three-way conversion frame, a second bolt and a unidirectional vibration sensor; the two ends of the first bolt are respectively fixedly connected to the tested structural member and the three-way conversion frame; the three-way conversion frame is a rectangular column structure, and a first guide groove is provided on the side parallel to the axis of the first bolt, and a second guide groove connected to all the first guide grooves is provided on the side perpendicular to the axis of the first bolt and away from the first bolt; all the second guide grooves are connected to each other; a tightening spring is arranged inside the three-way conversion frame, and the two ends of the tightening spring are respectively fixedly connected to the interior of the three-way conversion frame and the end of the second bolt; the end of the second bolt away from the tightening spring is fixedly connected to the unidirectional vibration sensor.

[0013] The present invention adopts the method of adding a three-way conversion frame between the unidirectional vibration sensor and the magnetic base or the tested structural component to realize the direction change test. The three-way conversion frame provides tension by tightening the spring to realize the fast connection of the unidirectional vibration sensor. The three-way conversion frame realizes the rapid conversion of the test direction of the unidirectional vibration sensor by providing a guide groove, which solves the problem that the vibration value of the structural component can only be tested in one direction in the prior art, and the other two directions cannot be tested, and the test is carried out by pulling up the magnetic base and re-adsorbing it to the tested structural component in another direction. However, due to the large magnetic force of the magnetic base, it is more troublesome to pull it up and then adsorb it, and many tested structural components are restricted by on-site conditions, so the unidirectional sensor can only be adsorbed on one surface to test in one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a three-way conversion device for a one-way vibration sensor provided in an embodiment of the present invention.

[0016] Among them, 1. tested structural part; 2. first bolt; 3. three-way conversion frame, 32. first guide groove, 33. second guide groove, 34. fastening spring, 35. first limiting through hole, 36. second limiting through hole, 37. fastening spring mounting support; 4. second bolt; 5. unidirectional vibration sensor; 6. magnetic base, 61. threaded hole. DETAILED DESCRIPTION

[0017] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] like Figure 1 As shown, the present invention provides a three-way conversion device for a unidirectional vibration sensor, which is fixedly connected to a tested structural member 1 and includes a first bolt 2, a three-way conversion frame 3, a second bolt 4 and a unidirectional vibration sensor 5.

[0019] The two ends of the first bolt 2 are fixedly connected to the tested structural member 1 and the three-way conversion frame 3 respectively; the three-way conversion frame 3 is a rectangular column structure, and a first guide groove 32 is provided on the side parallel to the axis of the first bolt 2; optionally, among the four sides of the three-way conversion frame 3 parallel to the axis of the first bolt 2, the first guide grooves 32 on two parallel sides are symmetrical, and the groove direction is parallel to the axis of the first bolt 2; a second guide groove 33 connected to all the first guide grooves 32 is provided on the side perpendicular to the axis of the first bolt 2 and away from the first bolt 2; all the second guide grooves 33 are connected to each other; optionally, two second guide grooves 33 are connected to each other to form a cross structure, so that the second bolt 4 can slide along the first guide groove 32 and the second guide groove 33, which can reduce the sliding friction in actual use.

[0020] A tightening spring 34 is provided inside the three-way conversion frame 3, and the two ends of the tightening spring 34 are fixedly connected to the interior of the three-way conversion frame 3 and the end of the second bolt 4 respectively; the end of the second bolt 4 away from the tightening spring 34 is fixedly connected to the unidirectional vibration sensor 5; when the unidirectional vibration sensor 5 moves to the side where the first guide groove 32 or the second guide groove 33 is located, the tightening spring 34 generates a tensile force due to contraction, so that the second bolt 4 always maintains a tendency to move toward the interior of the three-way conversion frame 3, thereby keeping the unidirectional vibration sensor 5 fixed on the side of the three-way conversion frame 3.

[0021] The three-way conversion device also includes a magnetic base 6 that is magnetically connected to the tested structural component 1. A threaded hole 61 that matches the first bolt 2 is defined on the side of the magnetic base 6 facing away from the tested structural component 1. If the tested structural component 1 is not conveniently provided with a threaded hole that matches the first bolt 2, the magnetic base 6 can be magnetically connected to the tested structural component 1 to achieve a fixed connection between the three-way conversion frame 3 and the tested structural component 1.

[0022] Each of the four first guide slots 32 defines a first limiting through-hole 35, the axis of which is perpendicular to the side of the three-way conversion frame 3 parallel to the axis of the first bolt 2. The diameter of the first limiting through-hole 35 is larger than the width of the first guide slot 32. The diameter of the second bolt 4 is smaller than the diameter of the first limiting through-hole 35 but larger than the width of the first guide slot 32. When the unidirectional vibration sensor 5 is secured to the target side of the three-way conversion frame 3, the second bolt 4 engages with the first limiting through-hole 35, preventing the unidirectional vibration sensor 5 from sliding along the first guide slot 32 into the second guide slot 33 during operation.

[0023] A second limiting through-hole 36 is defined within the second guide slot 33. The axis of the second limiting through-hole 36 is parallel to the axis of the first bolt 2. The diameter of the second limiting through-hole 36 is larger than the width of the second guide slot 33. The diameter of the second bolt 4 is smaller than the diameter of the second limiting through-hole 36 but larger than the width of the second guide slot 33. When the unidirectional vibration sensor 5 is secured to the target side of the three-way conversion frame 3, the second bolt 4 engages with the second limiting through-hole 36, preventing the unidirectional vibration sensor 5 from sliding along the second guide slot 33 into the first guide slot 32 during operation.

[0024] The interior of the three-way conversion frame 3 is a hollow structure, and is provided with a fastening spring mounting pillar 37; the two ends of the fastening spring mounting pillar 37 are respectively fixedly connected to the inner wall of the three-way conversion frame 3 and the end of the fastening spring 34 away from the second bolt 4; optionally, the three-way conversion frame 3 is a cube structure, and the four first limiting through holes 35 and the second limiting through holes 36 are perpendicular to the projections on the side of the three-way conversion frame 3 and all coincide with the connection between the first fastening spring mounting pillar 37 and the fastening spring 34, that is, the overlapping part is located in the middle of the interior of the three-way conversion frame 3. When the unidirectional vibration sensor 5 moves to any side of the three-way conversion frame 3, the fastening spring 34 only provides tension along the extension and contraction direction of the fastening spring 34, further improving the stability of the connection between the unidirectional vibration sensor 5 and the three-way conversion frame 3.

[0025] The present invention has been described in detail above with reference to specific embodiments and exemplary examples. However, these descriptions should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications, or improvements may be made to the technical solutions and implementations of the present invention without departing from the spirit and scope of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A three-way conversion device for a one-way vibration sensor, characterized in that: The one-way vibration sensor three-way conversion device is fixedly connected to a tested structural member (1), and comprises a first bolt (2), a three-way conversion frame (3), a second bolt (4), and a one-way vibration sensor (5); The two ends of the first bolt (2) are respectively fixedly connected to the tested structural member (1) and the three-way conversion frame (3); the three-way conversion frame (3) is a rectangular column structure, and a first guide groove (32) is provided on the side parallel to the axis of the first bolt (2), and a second guide groove (33) connected to all the first guide grooves (32) is provided on the side perpendicular to the axis of the first bolt (2) and away from the first bolt (2); all the second guide grooves (33) are connected to each other; a fastening spring (34) is provided inside the three-way conversion frame (3), and the two ends of the fastening spring (34) are respectively fixedly connected to the inside of the three-way conversion frame (3) and the end of the second bolt (4); the end of the second bolt (4) away from the fastening spring (34) is fixedly connected to the unidirectional vibration sensor (5); A first limiting through hole (35) is provided in each of the first guide grooves (32), and the axis of the first limiting through hole (35) is perpendicular to the side of the three-way conversion frame (3) and parallel to the axis of the first bolt (2); the aperture of the first limiting through hole (35) is larger than the slot width of the first guide groove (32); the diameter of the second bolt (4) is smaller than the aperture of the first limiting through hole (35) and larger than the slot width of the first guide groove (32); A second limiting through hole (36) is provided in the second guide groove (33), and the axis of the second limiting through hole (36) is parallel to the axis of the first bolt (2); the aperture of the second limiting through hole (36) is larger than the slot width of the second guide groove (33); the diameter of the second bolt (4) is smaller than the aperture of the second limiting through hole (36) and larger than the slot width of the second guide groove (33).

2. The three-way conversion device according to claim 1, characterized in that: It also includes a magnetic base (6) that is magnetically adsorbed and connected to the tested structural component (1); a threaded hole (61) that matches the first bolt (2) is provided on the side of the magnetic base (6) away from the tested structural component (1).

3. The three-way conversion device according to claim 1, characterized in that: The interior of the three-way conversion frame (3) is a hollow structure and is provided with a fastening spring mounting pillar (37); the two ends of the fastening spring mounting pillar (37) are respectively fixedly connected to the inner wall of the three-way conversion frame (3) and the end of the fastening spring (34) away from the second bolt (4).

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