Portable laser vibration meter for bolt looseness detection and use method of portable laser vibration meter

Abstract

The invention relates to the technical field of bolt looseness detection, in particular to a portable laser vibration meter for bolt looseness detection and a use method thereof.The portable laser vibration meter comprises a laser vibration meter body, a hanging rope, an insertion rod, an insertion hole and a placement groove, the hanging rope is arranged on one side of the laser vibration meter body, sliding grooves are formed in the two sides of the outer wall of the hanging rope, and the sliding grooves are formed in the bottom faces of the inner walls of the sliding grooves; a protective shell assembly is in sliding fit with the side wall of the sliding groove and comprises a protective shell body, plate bodies are arranged at the two ends of the protective shell body, a clamping groove is formed in one side of the protective shell body, and an anti-skid pad is arranged on the other side of the protective shell body. By arranging a hanging rope, the laser vibration meter can be conveniently carried to a designated position, and carrying and moving are convenient; by arranging the protective shell assembly, an optical element on the top surface of the laser vibration meter can be effectively protected; through cooperation of the protective shell assembly, the rotating shaft and the supporting legs, the laser vibration meter adapts to different detection requirements and angles, the laser vibration meter body can be stably placed at a detection position through the supporting legs, and vibration and displacement are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bolt loosening detection, and in particular to a portable laser vibrometer for bolt loosening detection and a use method thereof. Background Art

[0002] With the development of industrial automation and intelligence, the safe operation of mechanical equipment increasingly relies on the reliability monitoring of bolt connections. Bolts are common connecting elements in mechanical equipment, and their tightening status is directly related to the stability and safety of the equipment. The existing bolt loosening detection uses a laser vibrometer for detection. By analyzing the vibration data, the tightening status of the bolt is judged, thereby achieving early warning and preventive maintenance of bolt loosening.

[0003] Existing laser vibrometers are not convenient to carry to the site for operation, which may cause inconvenience and affect work efficiency; the outer surface of the existing laser vibrometer is exposed when in use. When the laser vibrometer is easily impacted, scratched or otherwise physically damaged during transportation or use, the laser vibrometer cannot be effectively protected, thereby affecting the measurement accuracy and reliability; the existing laser vibrometer is not convenient to support and place, so that the device cannot maintain a stable measurement environment when in use, which will cause the device to vibrate during the measurement process, thereby increasing the measurement error. Summary of the invention

[0004] The purpose of the present invention is to provide a portable laser vibrometer for bolt loosening detection and a method of using the same in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme: a portable laser vibrometer for detecting bolt looseness, comprising a laser vibrometer body and a hanging rope, a hanging rope is arranged on one side of the laser vibrometer body, both sides of the outer wall of the hanging rope are provided with sliding grooves, the bottom surface of the inner wall of the sliding groove is provided with a sliding groove, a protective shell assembly is slidably matched on the side wall of the sliding groove, the protective shell assembly comprises a protective shell body, plates are arranged at both ends of the protective shell body, a card slot is arranged on one side of the protective shell body, an anti-slip pad is arranged on the other side of the protective shell body, sliders are arranged at one end of the opposite surfaces of the two end plates respectively, a rotating rod is arranged at the other end of the opposite surface of the end plate body, and one end of the rotating rod is arranged to abut against the bottom surface of the inner wall of the sliding groove;

[0006] It also includes an insertion rod, a socket and a placement slot. The insertion rod is inserted and arranged on the outside of the plates at both ends of the protective shell body. Holes are provided on both sides of the outer wall of the laser vibrometer body. One end of the insertion rod passes through the plate body and is arranged inside the socket. Two placement slots are provided on the back of the laser vibrometer body. The inner side wall of the placement slot is rotatably connected to a rotating shaft, a support leg is provided on the rotating shaft, and a magnetic suction sheet is provided at the bottom of the support leg.

[0007] Preferably, the cross section of the protective shell assembly is "U"-shaped, the recessed end of the protective shell assembly is disposed against the top surface of the laser vibrometer body, and the two end plates of the protective shell body are disposed against the two sides of the outer wall of the laser vibrometer body.

[0008] Preferably, a groove is provided on the inner side wall of the slide groove relative to the outside, the slider is in the shape of a cuboid with extensions at both ends, the slider extensions are arranged to abut against the inside of the groove, and the protective shell body is slidably fitted on the slide groove through the slider.

[0009] Preferably, both ends of the sliding groove are semicircular, the outer wall of the rotating rod is disposed against one end of the inner wall of the sliding groove, and the protective shell body can be rotatably disposed on the sliding groove through the rotating rod.

[0010] Preferably, the cross section of the slot is "V"-shaped, and when the protective shell assembly rotates to the bottom end of the laser vibrometer body, the bottom corner of the laser vibrometer body abuts against the inner wall of the slot.

[0011] Preferably, mounting holes are provided on both sides of the protective shell body, one end of the insertion rod is inserted through the mounting hole, and the protective shell assembly is inserted into the insertion hole through the insertion rod.

[0012] Preferably, the laser vibrometer body is rotatably connected to the legs through a rotating shaft. The legs are in the shape of rectangular rods. One side of the legs is set against the inner wall of the placement groove. The bottom end of the legs is set in an inclined state, and the magnetic suction piece is set toward the bottom surface of the inner wall of the placement groove.

[0013] A method for using a portable laser vibrometer for detecting bolt loosening, using the above device, the method comprising the following steps:

[0014] In the first step, the laser vibrometer body is driven to the specified position by the hanging rope, the slider slides inside the groove of the slide slot, and the protective shell assembly is rotated around the slide slot to the specified angle by the rotating rod, so as to adapt to different detection positions and angles;

[0015] In the second step, when the protective shell assembly reaches the specified position, the V-shaped section of the slot contacts the corner at the bottom of the laser vibrometer body to support and fix the laser vibrometer body.

[0016] The third step is to move the legs and rotate them to the specified position to support the laser vibrometer body. The laser vibrometer body can be fixed and placed for use.

[0017] The fourth step is to start the laser vibrometer, detect the vibration signal of the bolt connection through the laser vibrometer, and display the detection result of the laser vibrometer;

[0018] Step 5: Rotate the legs to the inner wall of the placement slot via the rotating shaft, and adsorb the legs to the inner wall of the placement slot via the magnetic sheet;

[0019] Step 6. After the inspection is completed, the protective shell body is rotated to the top surface of the laser vibrometer through the rotating rod, and the recessed end of the protective shell assembly is set on the top surface of the laser vibrometer body to ensure that the two end plates of the protective shell body are set on both sides of the outer wall of the laser vibrometer body. Then, one end of the insertion rod is passed through the mounting hole and set inside the socket to connect and fix the laser vibrometer body to the protective shell assembly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By providing a hanging rope, the laser vibrometer can be easily carried to the designated location, easy to carry and move, so that the operator can easily use and operate the laser vibrometer, thereby improving the detection efficiency.

[0022] 2. By providing a protective shell assembly, the optical components on the top surface of the laser vibrometer can be effectively protected to prevent damage from dust, moisture and physical impact, thereby extending the service life of the laser vibrometer and reducing the maintenance frequency. The protective shell assembly can be quickly connected and disassembled with the laser vibrometer body through the plug rod and the socket, saving time.

[0023] 3. Through the cooperation of the protective shell assembly, the rotating shaft and the legs, and through the cooperation of the slider and the rotating rod, the protective shell body can be flexibly adjusted to the specified position in multiple directions of the laser vibrometer body to adapt to different detection requirements and angles. The laser vibrometer body can be firmly placed at the detection position through the legs to reduce vibration and displacement and improve the stability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of a portable laser vibrometer;

[0025] Figure 2 This is the second structural diagram of the portable laser vibrometer;

[0026] Figure 3 It is a schematic diagram of the structure of the protective shell assembly and the plug rod;

[0027] Figure 4 It is a schematic diagram of the structure of the hanging rope, the socket, the slide slot, the sliding slot and the rotating shaft;

[0028] Figure 5 It is a schematic diagram of the structure of the laser vibrometer body, the socket, the slide slot, the sliding slot, the placement slot, the rotating shaft and the legs;

[0029] Figure 6 This is the third structural diagram of the portable laser vibrometer;

[0030] In the figure: 1. Laser vibrometer body; 2. Hanging rope; 3. Protective shell assembly; 301. Protective shell body; 302. Card slot; 303. Anti-skid pad; 304. Slider; 305. Rotating rod; 4. Insertion rod; 5. Socket; 6. Slide groove; 7. Sliding groove; 8. Placement groove; 9. Rotating shaft; 10. Leg; 11. Magnetic sheet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 6 The present invention provides a technical solution: a portable laser vibrometer for detecting bolt loosening, comprising a laser vibrometer body 1 and a hanging rope 2, wherein the hanging rope 2 is arranged on one side of the laser vibrometer body 1, and both sides of the outer wall of the hanging rope 2 are provided with a slide groove 6, and the bottom surface of the inner wall of the slide groove 6 is provided with a slide groove 7, and a protective shell component 3 is slidably matched on the side wall of the slide groove 6, and the protective shell component 3 comprises a protective shell body 301, and plates are arranged at both ends of the protective shell body 301, and a card slot 302 is arranged on one side of the protective shell body 301, and an anti-slip pad 303 is arranged on the other side of the protective shell body 301, and the plates at both ends are provided with a card slot 302. A slider 304 is provided at one end of the opposite side, and a rotating rod 305 is provided at the other end of the opposite side of the end plate. One end of the rotating rod 305 is set against the bottom surface of the inner wall of the sliding groove 7. The laser vibrometer body 1 generally includes a laser transmitter, an optical system, a vibration sensor, a signal processor, a display unit, etc. The laser vibrometer body 1 emits a laser beam to irradiate the bolt connection. The laser beam will be affected by the vibration of the bolt during the reflection process. The frequency or phase change of the reflected light can reflect the vibration state of the bolt. By analyzing the frequency or phase change of the reflected light, it is determined whether the bolt is loose.

[0033] It also includes an insertion rod 4, a socket 5 and a placement groove 8. The insertion rod 4 is inserted and arranged on the outside of the two end plates of the protective shell body 301. The sockets 5 are provided on both sides of the outer wall of the laser vibrometer body 1. One end of the insertion rod 4 passes through the plate body and is arranged inside the socket 5, so that the protective shell assembly 3 can be quickly and easily fixed on the laser vibrometer. The back of the laser vibrometer body 1 is provided with two placement grooves 8. The inner wall of the placement groove 8 is rotatably connected with a rotating shaft 9. The rotating shaft 9 is provided with a support leg 10. The bottom end of the support leg 10 is provided with a magnetic suction piece 11. The laser vibrometer body 1 is rotatably connected to the support leg 10 through the rotating shaft 9. The support leg 10 is in the shape of a rectangular rod. One side of the support leg 10 is set against the inner wall of the placement groove 8. The bottom end of the support leg 10 is inclined, which helps to increase the contact area with the placement surface and improve stability. The magnetic suction piece 11 is arranged toward the bottom surface of the inner wall of the placement groove 8.

[0034] Specifically, the cross section of the protective shell assembly 3 is "U"-shaped, the recessed end of the protective shell assembly 3 is set against the top surface of the laser vibrometer body 1, and the two end plates of the protective shell body 301 are set against the two sides of the outer wall of the laser vibrometer body 1, which can provide good support and stability.

[0035] Specifically, a groove is opened on the inner wall of the slide groove 6 relative to the outside, and the slider 304 is in the shape of a cuboid with extensions at both ends. The extensions of the slider 304 are set in contact with the inside of the groove, and the protective shell body 301 is slidably fitted on the slide groove 6 through the slider 304. When one end of the insertion rod 4 passes through the plate body and is set in contact with the inside of the socket 5, the protective shell body 301 covers the display unit on the top surface of the laser vibrometer body 1 to protect the surface of the display unit.

[0036] Specifically, the two ends of the sliding groove 7 are semicircular, the outer wall shape of the rotating rod 305 matches the semicircular inner wall shape at both ends of the sliding groove 7, the outer wall of the rotating rod 305 is set in contact with one end of the inner wall of the sliding groove 7, and the protective shell body 301 can be rotatably set on the sliding groove 7 through the rotating rod 305.

[0037] Specifically, the cross section of the slot 302 is “V”-shaped. When the protective shell assembly 3 rotates to the bottom end of the laser vibrometer body 1 , the bottom corner of the laser vibrometer body 1 abuts against the inner wall of the slot 302 .

[0038] Specifically, mounting holes are provided on both sides of the protective shell body 301, one end of the plug rod 4 is penetrated and set on the mounting hole, the protective shell assembly 3 is inserted and set inside the plug hole 5 through the plug rod 4, and a limited end is set at one end of the plug rod 4, and the limited end is set to abut against the outer wall of the protective shell 301.

[0039] A method for using a portable laser vibrometer for detecting bolt loosening, using the above device, the method comprising the following steps:

[0040] In the first step, the laser vibrometer body 1 is driven to a designated position by the hanging rope 2, and the slider 304 slides inside the groove of the slide slot 6, and the protective shell assembly 3 is rotated around the slide slot 7 to a designated angle by the rotating rod 305, so as to adapt to different detection positions and angles;

[0041] In the second step, when the protective shell assembly 3 reaches the designated position, the “V”-shaped cross section of the slot 302 abuts against the corner at the bottom of the laser vibrometer body 1 to support and fix the laser vibrometer body 1;

[0042] In the third step, the legs 10 are moved and rotated to a specified position to support the laser vibrometer body 1, so that the laser vibrometer body 1 can be fixed and placed for use;

[0043] The fourth step is to start the laser vibrometer body 1 to detect the vibration signal of the bolt connection through the laser vibrometer body 1 and display the detection result of the laser vibrometer body 1;

[0044] Step 5: Rotate the leg 10 to the inner wall of the placement slot 8 via the rotating shaft 9, and adsorb the leg 10 to the inner wall of the placement slot 8 via the magnetic sheet 11;

[0045] Step 6. After the detection work is completed, the protective shell body 301 is rotated to cover the top surface of the laser vibrometer body 1 through the rotating rod 305, and the recessed end of the protective shell assembly 3 is set on the top surface of the laser vibrometer body 1 to ensure that the two end plates of the protective shell body 301 are set on both sides of the outer wall of the laser vibrometer body 1. Then, one end of the insertion rod 4 is passed through the mounting hole and set inside the insertion hole 5 to connect and fix the laser vibrometer body 1 and the protective shell assembly 3.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable laser vibrometer for detecting bolt loosening, comprising a laser vibrometer body (1) and a hanging rope (2), characterized in that: A hanging rope (2) is arranged on one side of the laser vibrometer body (1), and sliding grooves (6) are arranged on both sides of the outer wall of the hanging rope (2), and a sliding groove (7) is arranged on the bottom surface of the inner wall of the sliding groove (6), and a protective shell component (3) is slidably matched on the side wall of the sliding groove (6), and the protective shell component (3) comprises a protective shell body (301), and plates are arranged at both ends of the protective shell body (301), and a card slot (302) is arranged on one side of the protective shell body (301), and an anti-slip pad (303) is arranged on the other side of the protective shell body (301), and sliders (304) are arranged at one end of the opposite surfaces of the two end plates, and a rotating rod (305) is arranged at the other end of the opposite surface of the end plate, and one end of the rotating rod (305) is arranged to abut against the bottom surface of the inner wall of the sliding groove (7); The invention also comprises an insertion rod (4), an insertion hole (5) and a placement groove (8), wherein the insertion rod (4) is inserted and arranged on the outer side of the two end plates of the protective shell body (301), the insertion holes (5) are provided on both sides of the outer wall of the laser vibrometer body (1), one end of the insertion rod (4) passes through the plate body and is abutted against the inside of the insertion hole (5), and the back of the laser vibrometer body (1) is provided with two placement grooves (8), the inner side wall of the placement groove (8) is rotatably connected to a rotating shaft (9), a support leg (10) is provided on the rotating shaft (9), and a magnetic attraction sheet (11) is provided at the bottom end of the support leg (10).

2. A portable laser vibrometer for detecting bolt loosening according to claim 1, characterized in that: The cross section of the protective shell component (3) is in a "U" shape, the recessed end of the protective shell component (3) is disposed in contact with the top surface of the laser vibrometer body (1), and the two end plates of the protective shell body (301) are disposed in contact with the two sides of the outer wall of the laser vibrometer body (1).

3. The portable laser vibrometer for detecting bolt loosening according to claim 2, characterized in that: The inner side wall of the slide groove (6) is provided with a groove relative to the outside, the slider (304) is in the shape of a cuboid with extensions at both ends, the extensions of the slider (304) are arranged to abut against the inside of the groove, and the protective shell body (301) is slidably fitted on the slide groove (6) through the slider (304).

4. The portable laser vibrometer for detecting bolt loosening according to claim 2, characterized in that: The two ends of the sliding groove (7) are semicircular, the outer wall of the rotating rod (305) is arranged to abut against one end of the inner wall of the sliding groove (7), and the protective shell body (301) can be rotatably arranged on the sliding groove (7) through the rotating rod (305).

5. The portable laser vibrometer for detecting bolt loosening according to claim 2, characterized in that: The cross section of the slot (302) is in a "V" shape, and when the protective shell assembly (3) is rotated to the bottom end of the laser vibrometer body (1), the bottom corner of the laser vibrometer body (1) abuts against the inner wall of the slot (302).

6. The portable laser vibrometer for detecting bolt loosening according to claim 1, characterized in that: The protective shell body (301) has mounting holes on both sides of the plate, one end of the insertion rod (4) is inserted through the mounting hole, and the protective shell assembly (3) is inserted into the insertion hole (5) through the insertion rod (4).

7. The portable laser vibrometer for detecting bolt loosening according to claim 1, characterized in that: The laser vibrometer body (1) is rotatably connected to a support leg (10) via a rotating shaft (9); the support leg (10) is in the shape of a rectangular parallelepiped rod; one side of the support leg (10) is disposed in contact with the inner wall of the placement groove (8); the bottom end of the support leg (10) is disposed in an inclined shape; and the magnetic attraction sheet (11) is disposed toward the bottom surface of the inner wall of the placement groove (8).

8. A method for using a portable laser vibrometer for detecting bolt loosening, using the portable laser vibrometer for detecting bolt loosening as claimed in any one of claims 1 to 7, characterized in that: include: In the first step, the laser vibrometer body (1) is driven to a designated position by the hanging rope (2), and the slider (304) is slid inside the groove of the slide groove (6), and the protective shell assembly (3) is rotated to a designated angle around the slide groove (7) by the rotating rod (305), so as to adapt to different detection positions and angles; In the second step, when the protective shell assembly (3) reaches the designated position, the V-shaped cross section of the slot (302) abuts against the corner at the bottom of the laser vibrometer body (1), thereby supporting and fixing the laser vibrometer body (1); In the third step, the supporting legs (10) are moved and rotated to a specified position to support the laser vibrometer body (1), so that the laser vibrometer body (1) can be fixed and placed for use; The fourth step is to start the laser vibrometer body (1) to detect the vibration signal of the bolt connection through the laser vibrometer body (1), and display the detection result of the laser vibrometer body (1); In the fifth step, the support leg (10) is rotated to the inner wall of the placement groove (8) by the rotating shaft (9), and the support leg (10) is adsorbed and set on the inner wall of the placement groove (8) by the magnetic attraction sheet (11); In the sixth step, after the detection work is completed, the protective shell body (301) is rotated to cover the top surface of the laser vibrometer body (1) by using the rotating rod (305), and the recessed end of the protective shell assembly (3) is set to abut against the top surface of the laser vibrometer body (1), ensuring that the two end plates of the protective shell body (301) are set to abut against the two sides of the outer wall of the laser vibrometer body (1), and then one end of the insertion rod (4) is passed through the installation hole and abutted against the inside of the insertion hole (5), and the laser vibrometer body (1) is connected and fixed to the protective shell assembly (3).

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