A curtain wall falling risk detection device based on vibration measurement

Abstract

The present application relates to the field of curtain wall detection technology, and in particular to a curtain wall falling risk detection device based on vibration measurement, which includes a bracket, the bracket is composed of a central shell and adsorption covers evenly arranged around the circumference of the shell, and each adsorption cover is fixed to the shell through a support rod, and a vibration sensor is arranged in each adsorption cover, and an excitation hammer is arranged in the shell, including a detector, and each vibration sensor is connected to the detector through a data cable. The present application places the bracket on the curtain wall glass so that the shell and each adsorption cover are buckled on the curtain wall glass, and then starts the vacuum pump through the vacuum button set on the detector, so that the vacuum pump evacuates the inside of the shell, and the vacuum degree in the shell is transmitted to each adsorption cover through the through hole, so that the shell and each adsorption cover are adsorbed on the curtain wall glass through the internal vacuum, thereby completing the purpose of fixing the bracket on the curtain wall glass.

Description

Technical Field

[0001] The present application relates to the technical field of curtain wall detection, and in particular to a curtain wall falling risk detection device based on vibration measurement. Background Art

[0002] Building curtain wall refers to the non-load-bearing exterior wall enclosure of a building, which is usually composed of panels (glass, metal plates, stone slabs, ceramic plates, etc.) and the supporting structure behind it (aluminum beams and columns, steel structures, glass ribs, etc.); during the use of building curtain walls, there is a risk of the curtain walls falling, which in turn poses a safety hazard to the city's environment.

[0003] Taking curtain wall glass as an example, there is a risk of falling during use. Studies have found that the looser the glass boundary support, the lower its natural frequency. Often, the newly built glass curtain wall has a larger natural frequency because its supporting structure is not loose or aged, and the curtain wall glass panel support is tight. At this time, the curtain wall glass has a greater ability to resist external forces and a lower risk of falling off. As the glass curtain wall is used for a longer period of time, the boundary of the curtain wall glass panel becomes loose due to the aging, deformation or damage of the supporting structure, and the corresponding natural frequency of the curtain wall glass also decays. At this time, the curtain wall glass's ability to resist external forces also decays, and the probability of its falling off risk is also high. Therefore, we can only measure the natural frequency of the curtain wall glass, and through relative comparison, establish an evaluation standard, so that we can easily know the degree of looseness of the curtain wall glass support and the probability of falling off risk, and then evaluate the reliability of the glass curtain wall.

[0004] The existing curtain wall glass detection device generally includes a detector and a vibration sensor connected to the detector through a data line, plus an excitation hammer; when in use, one person puts the vibration sensor in contact with the curtain wall glass, one person holds the excitation hammer to knock on the glass, and one person holds the detector to record the value output by the detector; three people are required to complete the fixed frequency detection of the curtain wall glass, which is time-consuming and labor-intensive, and the detection efficiency is low. In addition, the force of manual knocking on the glass is uneven, resulting in inaccurate data information received by the detector and low detection accuracy, which affects the evaluation of the reliability of the curtain wall glass. Summary of the invention

[0005] In order to solve the problem that the existing curtain wall glass vibration detector is inconvenient to use, the present application provides a curtain wall fall risk detection device based on vibration measurement, which adopts the following technical solution:

[0006] A curtain wall falling risk detection device based on vibration measurement, including a bracket, the bracket consists of a central shell and adsorption covers evenly arranged around the circumference of the shell, and each adsorption cover is fixed to the shell through a support rod, a vibration sensor is arranged in each adsorption cover, an excitation hammer is arranged in the shell, including a detector, each vibration sensor is connected to the detector through a data line; each adsorption cover and the corresponding support rod and shell are provided with interconnected through holes, and also includes a vacuum pump arranged on the front side of the shell, and the suction end of the vacuum pump is connected to the inside of the shell; including a driving device, a clutch mechanism, a displacement mechanism and a knocking mechanism; the displacement mechanism is used for the vibration sensor to displace in the front and rear directions, and when the bracket is adsorbed on the curtain wall glass, the displacement mechanism moves the vibration sensor to contact the curtain wall glass; the knocking mechanism is arranged in the shell, and is used to drive the excitation hammer to knock on the glass; the clutch mechanism is arranged between the driving device and the displacement mechanism and the knocking mechanism, and the driving device can drive the displacement mechanism and the knocking mechanism respectively through the clutch mechanism.

[0007] According to the above technical scheme, when in use, the bracket is placed on the curtain wall glass so that the shell and each adsorption cover are buckled on the curtain wall glass, and then the vacuum pump is started by the detection button set on the detector, so that the vacuum pump evacuates the shell, and the vacuum degree in the shell is transmitted to each adsorption cover through the through hole, so that the shell and each adsorption cover are adsorbed on the curtain wall glass through the internal vacuum, and then the driving device is started by the detection button on the detector, and the driving device drives the displacement mechanism to move through the clutch mechanism, and the displacement mechanism drives the sensor to move backward and contact the curtain wall glass; when the sensor contacts the curtain wall glass, the driving device is The clutch mechanism drives the knocking mechanism to move, and the knocking mechanism drives the excitation hammer to intermittently knock on the curtain wall glass; the sensor senses the vibration of the curtain wall glass, and transmits the vibration signal to the detector through the data line. The detector then outputs it through the display screen, and uses dynamic analysis software to analyze and process it to obtain the vibration spectrum of the curtain wall glass. The natural vibration frequency of the glass can be read from the spectrum. The natural frequency under different fixed conditions is measured in advance, so as to obtain the measurable frequency range and loose frequency within the reference frequency range. The difference between the two extreme values ​​of the measurable range and the loose frequency is used as the safe interval and the dangerous interval for evaluation and grading.

[0008] Optionally, the displacement mechanism includes a fixed plate and a driving plate which are slidably arranged in the adsorption cover in the front-rear direction, a plurality of first springs are fixedly arranged between the fixed plate and the driving plate, the vibration sensor is coaxially fixedly arranged inside the fixed plate, a threaded hole is coaxially opened on the driving plate, the driving plate is threadedly connected with a threaded tube through the threaded hole, the threaded tube extends to the front side through the adsorption cover and is rotatably connected to the adsorption cover, a first bevel gear is fixedly arranged on one end of the threaded tube protruding from the front side of the adsorption cover, and the data cable of the vibration sensor passes through the interior of the threaded tube and extends to the outside of the first bevel gear.

[0009] Through the above technical solution, the threaded tube is driven to rotate by rotating the first bevel gear, so that the threaded tube drives the driving plate to move in the front-to-back direction in the shell, and the driving plate drives the fixing plate to move in the front-to-back direction in the adsorption cover through the first spring, thereby driving the vibration sensor to move in the front-to-back direction in the adsorption cover. When the driving plate moves backward, the vibration sensor contacts the curtain wall glass, and the driving plate continues to move a set distance to compress the first spring, so that the first spring has a set pre-tightening force, thereby maintaining close contact between the vibration sensor and the curtain wall glass, and effectively picking up the vibration of the curtain wall glass.

[0010] Optionally, the displacement mechanism also includes a gear cover arranged on the front side of the shell, and a number of transmission rods equal to the number of the adsorption covers are evenly penetrated in the gear cover along the circumferential direction, and each transmission rod is rotatably connected to the gear cover, and a second bevel gear is fixedly arranged on the outer end of each transmission rod, and each second bevel gear is meshed with the corresponding first bevel gear, and a third bevel gear is fixedly arranged on the inner end of each transmission rod located in the gear cover.

[0011] Through the above technical solution, each third bevel gear is driven to rotate to drive each transmission rod to rotate, so that each transmission rod drives the corresponding first bevel gear to rotate through the second bevel gear, thereby achieving the purpose of driving the first bevel gear to rotate.

[0012] Optionally, a fourth bevel gear is coaxially arranged in the gear cover, and the gear cover is rotationally connected to the fourth bevel gear, and the fourth bevel gear is meshed with each third bevel gear.

[0013] Through the above technical solution, each of the third bevel gears is driven to rotate by rotating the fourth bevel gear.

[0014] Optionally, an outer sleeve is coaxially fixedly provided on the inner bottom wall of the shell, and a cylinder is coaxially fixedly provided on the rear side surface of the outer sleeve, and a movable plate is slidably provided inside the cylinder along the front-to-back direction, the excitation hammer includes a rubber hammer head and a driving rod coaxially fixedly provided on the front side surface of the rubber hammer head, the driving rod and the movable plate are coaxially fixedly provided, a second spring is sleeved on the driving rod between the movable plate and the inner bottom wall of the cylinder, the front end of the driving rod extends into the outer sleeve and a disc is coaxially fixedly provided, a plurality of first driving blocks are evenly fixedly provided along the circumference on the rear side surface of the disc, both side surfaces of each first driving block are inclined surfaces, a driving disc is coaxially sleeved on the driving rod between the disc and the outer sleeve, a plurality of second driving blocks are evenly fixedly provided along the circumference on the front side surface of the driving disc, both side surfaces of each second driving block are inclined surfaces, the second driving blocks are staggered with the first driving blocks, and the driving disc is rotatably connected to the outer sleeve.

[0015] Through the above technical scheme, when it is necessary to stimulate the hammer to knock on the curtain wall glass, the driving disk is driven to rotate so that the driving disk cooperates with the inclined surface of each second driving block with the inclined surface of the corresponding first driving block, and the driving disk moves forward along the axial direction of the driving rod, and then the disk drives the driving rod to move forward, and the driving rod drives the moving plate and the rubber hammer head to move forward, and at the same time the moving plate compresses the second spring. When each first driving block is located on the front side of the corresponding second driving block, the driving disk continues to rotate, which will cause each first driving block to instantly enter the space between the corresponding two second driving blocks, and then the driving rod instantly moves backward, and then drives the moving plate and the rubber hammer head to move backward, so that the rubber hammer head produces a knocking action on the curtain wall glass, the driving disk continues to rotate, and the rubber hammer head intermittently knocks on the curtain wall glass, so as to achieve the purpose of the rubber hammer head knocking on the curtain wall glass, so that the curtain wall glass vibrates, and then the vibration sensor detects the natural frequency of the curtain wall glass.

[0016] Optionally, the striking mechanism further includes a driving sleeve coaxially fixedly arranged on the outer side of the driving disk.

[0017] Through the above technical solution, the driving sleeve drives the driving disc to rotate, thereby achieving the purpose of driving the driving disc to rotate.

[0018] Optionally, the fourth bevel gear is coaxially provided with a driving hole, and the inner side wall of the driving hole is evenly hinged with special-shaped blocks along the circumferential direction.

[0019] Through the above technical solution, the special-shaped block rotates so that the large end of the special-shaped block is close to the inner wall of the driving hole and contacts the inner wall of the driving hole.

[0020] Optionally, the driving device includes a servo motor fixedly arranged on the front side of the gear cover, the output shaft of the servo motor passes through the gear cover and is fixedly provided with a transmission shaft, the rear end of the transmission shaft passes through the driving hole of the fourth bevel gear and extends to the rear side of the fourth bevel gear.

[0021] Optionally, the clutch mechanism includes a clutch sleeve mounted on the transmission shaft, and the clutch sleeve is slidably connected to the transmission shaft in the front-to-back direction, a cone is fixedly provided on the front side of the outer surface of the clutch sleeve, a sliding ring is mounted on the outer surface of the clutch sleeve, a plurality of third springs are evenly fixedly provided along the circumferential direction between the sliding ring and the cone, and a clutch hole is coaxially opened in the shell.

[0022] Through the above technical scheme, in the initial state, the third spring pushes the conical body to drive the clutch sleeve to move forward, so that the conical body enters the driving hole of the fourth conical gear, and the conical body drives the large end of each special-shaped block through the conical surface, so that the special-shaped block rotates, and the large end of the special-shaped block conflicts with the inner wall of the driving hole of the fourth conical gear. At this time, the rear end of the clutch sleeve extends to a set distance in the clutch hole of the shell, and the servo motor rotates through the transmission shaft to drive the clutch sleeve and the conical body to rotate synchronously, so that the conical body drives the fourth conical gear to rotate through the special-shaped block, and then drives each vibration sensor to move back and forth in the adsorption cover, so as to realize the contact and separation of the vibration sensor and the curtain wall glass; in addition, when the clutch sleeve rotates, the conical body also drives the sliding ring to rotate through a number of third springs, and the rear side of the sliding ring slides relative to the front side of the shell.

[0023] Optionally, an arc block is fixedly provided on the rear side surface of the clutch sleeve, the outer side surface of the arc block is in sliding contact with the inner wall of the clutch hole of the shell, a fan-shaped cavity is provided on the inner wall of the clutch hole of the shell, and an air hole connected to the fan-shaped cavity is provided on the inner bottom wall of the shell, and an arc block rotating accommodating body is coaxially fixed at the position where the outer sleeve contacts the shell, and an annular groove is provided in the arc block rotating accommodating body.

[0024] Through the above technical scheme, first, when the bracket is fixed on the curtain wall glass, the vacuum pump evacuates the shell and the adsorption cover, and the cone on the clutch sleeve is connected to the fourth bevel gear through the special-shaped block under the thrust of the third spring. The position of the arc block at this time seals the fan-shaped cavity, and the vibration sensor is not in contact with the curtain wall glass at this time. The servo motor is started to rotate through the detection button of the detector, and the servo motor drives the vibration sensor to move to the rear side through the transmission shaft, clutch sleeve, cone, special-shaped block fourth bevel gear, third bevel gear, transmission rod, second bevel gear, first bevel gear, threaded tube, drive plate, and fixed plate in sequence, and contacts the curtain wall glass; the servo motor can make the vibration sensor contact with the curtain wall glass and make the first spring have a set compression state when it rotates less than one circle, and this requirement can be achieved through the transmission ratio of the fourth bevel gear to the third bevel gear, and the transmission ratio of the threaded tube to the drive plate; when the servo When the servo motor rotates, it drives the arc block to rotate. When the arc block rotates to open the fan-shaped cavity, the displacement of the vibration sensor in contact with the curtain wall glass reaches the set distance. At this time, the vacuum state in the shell is transmitted to the space between the rear end of the clutch sleeve and the clutch hole of the shell through the air vents and the fan-shaped cavity. Since the front end of the clutch sleeve feels the external atmospheric pressure, the clutch sleeve moves backward under the push of the atmospheric pressure until the rear end of the clutch sleeve collides with the front side of the drive sleeve, and the conical body is separated from the special-shaped block of the fourth bevel gear. At this time, the arc block enters the annular groove of the arc block rotating accommodating body. At this time, the rotation of the servo motor will no longer drive the fourth bevel gear to rotate, but drives the drive sleeve to rotate through the rear end of the clutch sleeve. The rotation of the drive sleeve drives the excitation hammer to intermittently knock on the curtain wall glass, and then the natural frequency of the curtain wall glass is picked up by the vibration sensor, and then transmitted to the detector through the data line, so as to achieve the purpose of detecting the natural frequency of the curtain wall glass.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] The present application provides an adsorption hood, a shell, a support rod, and a vacuum pump. When in use, the bracket is placed on the curtain wall glass so that the shell and each adsorption hood are buckled on the curtain wall glass. The vacuum pump is then started by a vacuum button provided on the detector to evacuate the inside of the shell. The vacuum degree in the shell is transmitted to each adsorption hood through the through hole, so that the shell and each adsorption hood are adsorbed on the curtain wall glass through the internal vacuum, thereby completing the purpose of fixing the bracket on the curtain wall glass.

[0027] Furthermore, secondly, the present application sets up a detector, a vibration sensor, an excitation hammer, a driving device, a clutch mechanism, a displacement mechanism and a knocking mechanism. When in use, the driving device is started by the detection button on the detector, and the driving device drives the displacement mechanism to operate through the clutch mechanism, and the displacement mechanism drives the sensor to move backward and contact the curtain wall glass, without the need for manual hand-held vibration sensor; when the sensor contacts the curtain wall glass, the driving device drives the knocking mechanism to operate through the clutch mechanism, and the knocking mechanism drives the excitation hammer to intermittently knock on the curtain wall glass, without the need for manual hand-held excitation hammer to knock on the curtain wall glass; the sensor senses the vibration of the curtain wall glass, and transmits the vibration signal to the detector through the data line, and then the detector outputs it through the display screen, thereby achieving the purpose of convenient use of the present device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure in the embodiment of the present application;

[0029] Figure 2 is a schematic diagram of the three-dimensional structure of the transmission rod in the embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the three-dimensional structure of the shell in the embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the three-dimensional structure inside the adsorption cover in the embodiment of the present application;

[0032] Figure 5 is a schematic diagram of the three-dimensional structure of the fourth bevel gear and the third bevel gear in meshing state in the embodiment of the present application;

[0033] Figure 6 is a schematic diagram of the three-dimensional structure inside the shell in the embodiment of the present application;

[0034] Figure 7 is a schematic diagram of the three-dimensional structure of the fourth bevel gear and the second spring in an embodiment of the present application;

[0035] Figure 8 is a schematic diagram of the front view structure of the fourth bevel gear in the embodiment of the present application;

[0036] Fig. 9 It is an enlarged three-dimensional schematic diagram of a local structure in an embodiment of the present application;

[0037] Fig.10 This is a schematic diagram of the three-dimensional structure inside the outer casing in the embodiment of the present application;

[0038] Fig.11 is a schematic diagram of the three-dimensional structure of the drive sleeve in the embodiment of the present application;

[0039] Fig.12 It is a schematic diagram of the three-dimensional structure of the excitation hammer in the embodiment of the present application;

[0040] Fig.13 This is a schematic diagram of the three-dimensional structure inside the cylinder in the embodiment of the present application;

[0041] Fig.14 It is a schematic diagram of the internal structure of the cylinder in the embodiment of the present application.

[0042] Figure numerals: 1, housing; 2, adsorption cover; 3, support rod; 4, vibration sensor; 5, excitation hammer; 6, detector; 7, data line; 8, through hole; 9, fixing plate; 10, driving plate; 11, first spring; 12, threaded hole; 13, threaded tube; 14, first bevel gear; 15, gear cover; 16, transmission rod; 17, second bevel gear; 18, third bevel gear; 19, fourth bevel gear; 20, outer shell; 21, cylinder; 22, moving plate; 23, rubber hammer head; 24, driving Rod; 25, second spring; 26, disc; 27, first drive block; 28, drive disc; 29, second drive block; 30, drive sleeve; 31, drive hole; 32, special-shaped block; 33, servo motor; 34, transmission shaft; 35, clutch sleeve; 36, cone; 37, sliding ring; 38, third spring; 39, clutch hole; 40, arc block; 41, fan-shaped cavity; 42, air vent; 43, arc block rotation accommodating body; 44, annular groove; 45, air vent; 46, vacuum pump; 47, vacuum puncture valve. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1 —14 provides further details of this application.

[0044] The embodiment of the present application discloses a curtain wall falling risk detection device based on vibration measurement, including a bracket, the bracket is composed of a central shell 1 and adsorption covers 2 uniformly arranged around the circumference of the shell 1, and each adsorption cover 2 is fixed to the shell 1 through a support rod 3, a vibration sensor 4 is arranged in each adsorption cover 2, an excitation hammer 5 is arranged in the shell 1, and a detector 6 is also included, and each vibration sensor 4 is connected to the detector 6 through a data line 7; each adsorption cover 2 and the corresponding support rod 3 and the shell 1 are provided with a through hole 8 that is interconnected, and a vacuum pump 46 is also included. The suction end of the vacuum pump 46 is connected to the interior of the shell 1; when in use, by placing the bracket on the curtain wall glass, the shell 1 and each adsorption cover 2 are buckled on the curtain wall glass, and then the vacuum pump 46 is started by the detection button set on the detector 6, so that the vacuum pump 46 evacuates the shell 1, and the vacuum degree in the shell 1 is transmitted to each adsorption cover 2 through the through hole 8, so that the shell 1 and each adsorption cover 2 are adsorbed on the curtain wall glass through the internal vacuum, thereby completing the purpose of fixing the bracket on the curtain wall glass.

[0045] It also includes a driving device, a clutch mechanism, a position mechanism and a knocking mechanism;

[0046] The displacement mechanism is used to displace the vibration sensor 4 in the front-rear direction. When the bracket is adsorbed on the curtain wall glass, the displacement mechanism moves the vibration sensor 4 to contact the curtain wall glass.

[0047] The knocking mechanism is arranged in the housing 1, and is used to drive the excitation hammer 5 to knock the glass;

[0048] The clutch mechanism is arranged between the driving device and the displacement mechanism and the knocking mechanism, and the driving device can drive the displacement mechanism and the knocking mechanism respectively through the clutch mechanism; when in use, firstly, the housing 1 and each adsorption cover 2 are evacuated by the vacuum pump 46, so that the bracket is adsorbed on the curtain wall glass, and then the driving device is started by the detection button on the detector 6, and the driving device drives the displacement mechanism to move through the clutch mechanism, and the displacement mechanism drives the sensor to move backward and contact the curtain wall glass; when the sensor contacts the curtain wall glass, the driving device drives the knocking mechanism to move through the clutch mechanism, and the knocking mechanism drives the excitation hammer 5 to intermittently knock on the curtain wall glass; the sensor senses the vibration of the curtain wall glass, and transmits the vibration signal to the detector 6 through the data line 7, and then the detector 6 outputs it through the display screen, and uses the dynamic analysis software to analyze and process it to obtain the vibration spectrum of the curtain wall glass, and the vibration natural frequency of the glass can be read from the spectrum diagram, and the natural frequency of the glass under different fixed conditions is measured in advance, so as to obtain the measurable frequency range and loose frequency within the reference frequency range, and the difference between the two extreme values ​​of the measurable range and the loose frequency is used as the safe interval and the dangerous interval for evaluation and classification.

[0049] In order to achieve the purpose of driving the vibration sensor 4 to move forward and backward in the adsorption cover 2, in this embodiment, the displacement mechanism includes a fixed plate 9 and a driving plate 10 that are slidably arranged in the adsorption cover 2 in the forward and backward directions, and a plurality of first springs 11 are fixedly arranged between the fixed plate 9 and the driving plate 10. The vibration sensor 4 is coaxially fixedly arranged inside the fixed plate 9, and a threaded hole 12 is coaxially opened on the driving plate 10. The driving plate 10 is threadedly connected with a threaded tube 13 through the threaded hole 12. The threaded tube 13 extends to the front side and penetrates the adsorption cover 2, and is rotatably connected to the adsorption cover 2. One end of the threaded tube 13 protruding from the front side of the adsorption cover 2 is fixedly provided with a first bevel gear 14, and the data line 7 of the vibration sensor 4 penetrates the threaded tube 13 and extends to the outside of the first bevel gear 14; the threaded tube 13 is driven to rotate by rotating the first bevel gear 14, so that the threaded tube 13 drives the driving plate 10 to move in the front-to-back direction in the shell 1, and the driving plate 10 drives the fixing plate 9 to move in the front-to-back direction in the adsorption cover 2 through the first spring 11, thereby driving the vibration sensor 4 to move in the front-to-back direction in the adsorption cover 2. When the driving plate 10 moves backward, the vibration sensor 4 contacts the curtain wall glass, and the driving plate 10 continues to move a set distance to compress the first spring 11, so that the first spring 11 has a set preload force, thereby maintaining close contact between the vibration sensor 4 and the curtain wall glass, and effectively picking up the vibration of the curtain wall glass.

[0050] In order to achieve the purpose of driving the first bevel gear 14 to rotate, in this embodiment, the displacement mechanism also includes a gear cover 15 arranged on the front side of the shell 1, and the gear cover 15 is evenly penetrated with transmission rods 16 in the circumferential direction, the number of which is equal to the adsorption cover 2, and each transmission rod 16 is rotatably connected to the gear cover 15, and the outer end of each transmission rod 16 is fixedly provided with a second bevel gear 17, and each second bevel gear 17 is meshed with the corresponding first bevel gear 14, and the inner end of each transmission rod 16 located in the gear cover 15 is fixedly provided with a third bevel gear 18; by driving each third bevel gear 18 to rotate, each transmission rod 16 is driven to rotate, so that each transmission rod 16 drives the corresponding first bevel gear 14 to rotate through the second bevel gear 17, thereby achieving the purpose of driving the first bevel gear 14 to rotate.

[0051] In order to achieve the purpose of driving the third bevel gear 18 to rotate, in this embodiment, a fourth bevel gear 19 is coaxially arranged in the gear cover 15, and the gear cover 15 is rotatably connected to the fourth bevel gear 19, and the fourth bevel gear 19 is meshed with each third bevel gear 18; each third bevel gear 18 is driven to rotate by rotating the fourth bevel gear 19.

[0052] In the present application, in order to achieve the purpose of the excitation hammer 5 hitting the curtain wall glass, an outer shell 20 is coaxially fixedly arranged on the inner bottom wall of the shell 1, a cylinder 21 is coaxially fixedly arranged on the rear side of the outer shell 20, and a movable plate 22 is slidably arranged inside the cylinder 21 along the front and rear directions. The excitation hammer 5 includes a rubber hammer head 23, and a driving rod 24 coaxially fixedly arranged on the front side of the rubber hammer head 23. The driving rod 24 is coaxially fixedly arranged with the movable plate 22. A second spring 25 is sleeved on the driving rod 24 located between the movable plate 22 and the inner bottom wall of the cylinder 21. The front end of the driving rod 24 The outer casing 20 extends into the outer casing 20, and a disc 26 is coaxially fixedly arranged. A plurality of first driving blocks 27 are evenly fixedly arranged along the circumference on the rear side of the disc 26. Both sides of each first driving block 27 are inclined surfaces. A driving disc 28 is coaxially sleeved on the driving rod 24 between the disc 26 and the outer casing 20. A plurality of second driving blocks 29 are evenly fixedly arranged along the circumference on the front side of the driving disc 28. Both sides of each second driving block 29 are inclined surfaces. The second driving blocks 29 are staggered with the first driving blocks 27, and the driving disc 28 is rotatably connected to the outer casing 20. When When the hammer 5 needs to be stimulated to knock on the curtain wall glass, the driving disc 28 is driven to rotate, so that the driving disc 28 cooperates with the inclined surface of each second driving block 29 and the inclined surface of the corresponding first driving block 27, and the driving disc 26 moves forward along the axial direction of the driving rod 24, and then the disc 26 drives the driving rod 24 to move forward, and the driving rod 24 drives the moving plate 22 and the rubber hammer head 23 to move forward. At the same time, the moving plate 22 compresses the second spring 25. When each first driving block 27 is located on the front side of the corresponding second driving block 29, the driving The disk 28 continues to rotate, causing each first driving block 27 to instantly enter the space between the corresponding two second driving blocks 29, thereby causing the driving rod 24 to instantly move rearward, thereby driving the moving plate 22 and the rubber hammer head 23 to move rearward, causing the rubber hammer head 23 to strike the curtain wall glass once. The driving disk 28 continues to rotate, and the rubber hammer head 23 strikes the curtain wall glass intermittently, thereby achieving the purpose of the rubber hammer head 23 striking the curtain wall glass, causing the curtain wall glass to vibrate, and then the vibration sensor 4 detects the natural frequency of the curtain wall glass.

[0053] In order to achieve the purpose of driving the driving disk 28 to vibrate, in this embodiment, the knocking mechanism also includes a driving sleeve 30 coaxially fixedly arranged on the outer side of the driving disk 28; the driving sleeve 30 drives the driving disk 28 to rotate, thereby achieving the purpose of driving the driving disk 28 to rotate.

[0054] In this embodiment, the fourth bevel gear 19 is coaxially provided with a drive hole 31, and the inner wall of the drive hole 31 is evenly hinged with a special-shaped block 32 along the circumferential direction. When the special-shaped block 32 rotates, the large end of the special-shaped block 32 can be close to the inner wall of the drive hole 31 and collide with the inner wall of the drive hole 31.

[0055] In this embodiment, the driving device includes a servo motor 33 fixedly arranged on the front side of the gear cover 15. The output shaft of the servo motor 33 passes through the gear cover 15 and is fixedly provided with a transmission shaft 34. The rear end of the transmission shaft 34 passes through the driving hole 31 of the fourth bevel gear 19 and extends to the rear side of the fourth bevel gear 19.

[0056] In this embodiment, the clutch mechanism includes a clutch sleeve 35 sleeved on the transmission shaft 34, and the clutch sleeve 35 is slidably connected to the transmission shaft 34 in the front and rear directions. A conical body 36 is fixedly arranged on the front side of the outer surface of the clutch sleeve 35, and a sliding ring 37 is sleeved on the outer surface of the clutch sleeve 35. A plurality of third springs 38 are evenly fixedly arranged along the circumferential direction between the sliding ring 37 and the conical body 36, and a clutch hole 39 is coaxially opened in the housing 1; in the initial state, the third spring 38 pushes the conical body 36 to drive the clutch sleeve 35 to move forward, so that the conical body 36 enters the driving hole 31 of the fourth bevel gear 19, and the conical body 36 drives the large end of each special-shaped block 32 through the conical surface, so that the special-shaped block 32 generates The servo motor 33 rotates, and the large end of the special-shaped block 32 contacts the inner wall of the driving hole 31 of the fourth bevel gear 19. At this time, the rear end of the clutch sleeve 35 extends to the set distance in the clutch hole 39 of the shell 1. The servo motor 33 rotates through the transmission shaft 34 to drive the clutch sleeve 35 and the cone body 36 to rotate synchronously, so that the cone body 36 drives the fourth bevel gear 19 to rotate through the special-shaped block 32, and then drives each vibration sensor 4 to move back and forth in the adsorption cover 2, so as to realize the contact and separation of the vibration sensor 4 with the curtain wall glass; in addition, when the clutch sleeve 35 rotates, the cone body 36 also drives the sliding ring 37 to rotate through a plurality of third springs 38, and the rear side of the sliding ring 37 slides relative to the front side of the shell 1.

[0057] When in use, firstly, the bracket is adsorbed onto the curtain wall glass by the vacuum pump 46, and then the servo motor 33 is started, and the servo motor 33 drives the vibration sensor 4 to move backward through the transmission shaft 34, the clutch sleeve 35, the cone body 36, the special-shaped block 32, the fourth cone gear 19, the third cone gear 18, the transmission rod 16, the second cone gear 17, the first cone gear 14, the threaded tube 13, the drive plate 10, and the fixing plate 9 in sequence, and contacts the curtain wall glass; then the clutch sleeve 35 needs to move backward to make the cone body 36 disengage from the special-shaped block 32, stop driving the fourth cone gear 19 to rotate, and the clutch sleeve 35 The rear end of the clutch sleeve 35 enters the clutch hole 39 of the shell 1, and the rear end of the clutch sleeve 35 conflicts with the front side of the driving sleeve 30, so that the clutch sleeve 35 can drive the driving sleeve 30 to rotate through the static friction between the clutch sleeve 35 and the driving sleeve 30. In order to achieve the purpose of moving the clutch sleeve 35 to the rear side, in this embodiment, an arc block 40 is fixedly provided on the rear side of the clutch sleeve 35, and the outer side of the arc block 40 is in sliding contact with the inner side wall of the clutch hole 39 of the shell 1. A fan-shaped cavity 41 is provided on the inner side wall of the clutch hole 39 of the shell 1, and a vent hole 42 connected to the fan-shaped cavity 41 is provided on the inner bottom wall of the shell 1. The position where the body 20 contacts the shell 1 is coaxially fixed with an arc block rotating accommodating body 43, and an annular groove 44 is provided in the arc block rotating accommodating body 43; first, when the bracket is fixed on the curtain wall glass, the vacuum pump 46 evacuates the shell 1 and the adsorption cover 2, and at this time, the conical body 36 on the clutch sleeve 35 is connected to the fourth bevel gear 19 through the special-shaped block 32 under the thrust of the third spring 38. At this time, the position of the arc block 40 seals the fan-shaped cavity 41, and at this time, the vibration sensor 4 is not in contact with the curtain wall glass. The servo motor 33 is started to rotate through the detection button of the detector 6, and the servo motor 33 is sequentially The transmission shaft 34, the clutch sleeve 35, the conical body 36, the fourth bevel gear 19 of the special-shaped block 32, the third bevel gear 18, the transmission rod 16, the second bevel gear 17, the first bevel gear 14, the threaded tube 13, the drive plate 10, and the fixed plate 9 drive the vibration sensor 4 to move backward and contact the curtain wall glass; the servo motor 33 rotates less than one circle to make the vibration sensor 4 contact the curtain wall glass and make the first spring 11 have a set compression state. This requirement can be achieved through the transmission ratio of the fourth bevel gear 19 and the third bevel gear 18, and the transmission ratio of the threaded tube 13 and the drive plate 10.When the servo motor 33 rotates, the arc block 40 is driven to rotate. When the arc block 40 rotates to open the fan-shaped cavity 41, the displacement of the vibration sensor 4 in contact with the curtain wall glass reaches a set distance. At this time, the vacuum state in the shell 1 is transmitted to the space between the rear end of the clutch sleeve 35 and the clutch hole 39 of the shell 1 through the air vent 42 and the fan-shaped cavity 41. Since the front end of the clutch sleeve 35 feels the external atmospheric pressure, the clutch sleeve 35 moves backward under the push of the atmospheric pressure until the rear end of the clutch sleeve 35 abuts against the front side of the drive sleeve 30. The conical body 36 is disengaged from the special-shaped block 32 of the fourth bevel gear 19, and the arc block 40 enters the annular groove 44 of the arc block rotation housing 43. The rotation of the servo motor 33 will no longer drive the fourth bevel gear 19 to rotate, but drives the drive sleeve 30 to rotate through the rear end of the clutch sleeve 35. The rotation of the drive sleeve 30 drives the excitation hammer 5 to intermittently knock on the curtain wall glass, and then the natural frequency of the curtain wall glass is picked up by the vibration sensor 4, and then transmitted to the detector 6 through the data line 7, so as to achieve the purpose of detecting the natural frequency of the curtain wall glass. In addition, the principle that the front end of the clutch sleeve 35 senses the external atmospheric pressure is that a vent hole 45 is provided on the front side of the gear cover 15, so that the interior of the gear cover 15 is at atmospheric pressure, and the atmospheric pressure is transmitted to the front end of the clutch sleeve 35 through the drive hole 31 of the fourth bevel gear 19. ;

[0058] After use, the servo motor 33 can be stopped by the stop button provided on the detector 6, and then the vacuum pump 46 is stopped, and the bracket can be taken out from the curtain wall glass. At this time, the clutch sleeve 35 is still in a position of conflicting with the drive sleeve 30. In order to disengage the clutch sleeve 35 from the drive sleeve 30 and connect the conical body 36 to the fourth bevel gear 19 through the special-shaped block 32, that is, to make the large end of the special-shaped block 32 conflict with the inner wall of the drive hole 31, in this embodiment, a vacuum puncture valve 47 is also provided on the front side of the shell 1. Manually opening the vacuum puncture valve 47 will make the space in the annular groove 44 of the arc block rotating container 43 connected to the outside through the vacuum puncture valve 47, thereby making the clutch sleeve 35 disengaged from the drive sleeve 30 and connect the conical body 36 to the fourth bevel gear 19 through the special-shaped block 32. The rear end of the clutch sleeve 35 loses vacuum, and at this time, the clutch sleeve 35 moves forward under the thrust of the third spring 38, so that the conical body 36 enters the driving hole 31 of the fourth bevel gear 19, driving each special-shaped block 32 to rotate, and the large end of the special-shaped block 32 conflicts with the inner wall of the driving hole 31; then a reset button is provided on the detector 6, and by pressing the reset button, the servo motor 33 can be started, and the servo motor 33 drives the vibration sensor 4 to move a set distance to the front side. This position is also the position where the arc block 40 just seals the fan-shaped cavity 41 on the inner wall of the clutch hole 39 of the shell 1. At this point, the detector 6, the vibration sensor 4 and the clutch sleeve 35 are in the initial state, waiting for the next use.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A curtain wall fall risk detection device based on vibration measurement, comprising a bracket, characterized in that: The support is composed of a central shell (1) and adsorption covers (2) uniformly arranged around the circumference of the shell (1), and each of the adsorption covers (2) is fixed to the shell (1) via a support rod (3), a vibration sensor (4) is arranged in each of the adsorption covers (2), an excitation hammer (5) is arranged in the shell (1), and a detector (6) is included, and each of the vibration sensors (4) is connected to the detector (6) via a data line (7); each of the adsorption covers (2) and the corresponding support rod (3) and the shell (1) are provided with a through hole (8) that is interconnected, including a vacuum pump (46) arranged on the front side of the shell (1), and the suction end of the vacuum pump (46) is connected to the inside of the shell (1); It includes a driving device, a clutch mechanism, a displacement mechanism and a knocking mechanism; The displacement mechanism is used to displace the vibration sensor (4) in the front-rear direction; The knocking mechanism is arranged in the housing (1) and is used to drive the excitation hammer (5) to knock on the glass; The clutch mechanism is arranged between the driving device and the displacement mechanism and the knocking mechanism, and the driving device can drive the displacement mechanism and the knocking mechanism respectively through the clutch mechanism; The displacement mechanism comprises a fixing plate (9) and a driving plate (10) which are slidably arranged in the adsorption cover (2) in the front-back direction, a plurality of first springs (11) are fixedly arranged between the fixing plate (9) and the driving plate (10), the vibration sensor (4) is coaxially fixedly arranged inside the fixing plate (9), a threaded hole (12) is coaxially opened on the driving plate (10), a threaded tube (13) is threadedly connected to the driving plate (10) through the threaded hole (12), the threaded tube (13) extends to the front side and penetrates the adsorption cover (2), and is rotatably connected to the adsorption cover (2), a first bevel gear (14) is fixedly arranged on one end of the threaded tube (13) protruding from the front side of the adsorption cover (2), and a data line (7) of the vibration sensor (4) penetrates the inside of the threaded tube (13) and extends to the outside of the first bevel gear (14); The displacement mechanism further comprises a gear cover (15) arranged on the front side of the housing (1), wherein the gear cover (15) is uniformly provided with transmission rods (16) in the same number as the adsorption cover (2) along the circumferential direction, and each transmission rod (16) is rotatably connected to the gear cover (15), a second bevel gear (17) is fixedly arranged at the outer end of each transmission rod (16), and each second bevel gear (17) is meshed with the corresponding first bevel gear (14), and a third bevel gear (18) is fixedly arranged at the inner end of each transmission rod (16) located in the gear cover (15); A fourth bevel gear (19) is coaxially arranged in the gear cover (15), and the gear cover (15) is rotatably connected to the fourth bevel gear (19), and the fourth bevel gear (19) is meshed with each of the third bevel gears (18); An outer shell (20) is coaxially fixedly arranged on the inner bottom wall of the shell (1), a cylinder (21) is coaxially fixedly arranged on the rear side of the outer shell (20), a movable plate (22) is slidably arranged inside the cylinder (21) along the front-back direction, the excitation hammer (5) comprises a rubber hammer head (23), and a driving rod (24) coaxially fixedly arranged on the front side of the rubber hammer head (23), the driving rod (24) and the movable plate (22) are coaxially fixedly arranged, a second spring (25) is sleeved on the driving rod (24) located between the movable plate (22) and the inner bottom wall of the cylinder (21), and the front end of the driving rod (24) extends to the outer shell (20). ), and a disc (26) is coaxially fixedly arranged therein, a plurality of first driving blocks (27) are evenly fixedly arranged on the rear side surface of the disc (26) along the circumference, both side surfaces of each of the first driving blocks (27) are inclined surfaces, a driving disc (28) is coaxially sleeved on a driving rod (24) between the disc (26) and the outer casing (20), a plurality of second driving blocks (29) are evenly fixedly arranged on the front side surface of the driving disc (28) along the circumference, both side surfaces of each of the second driving blocks (29) are inclined surfaces, the second driving blocks (29) are staggeredly arranged with the first driving blocks (27), and the driving disc (28) is rotatably connected to the outer casing (20); The knocking mechanism also includes a driving sleeve (30) coaxially fixedly arranged on the outer side of the driving disk (28); The fourth bevel gear (19) is coaxially provided with a driving hole (31), and the inner side wall of the driving hole (31) is evenly hinged with a special-shaped block (32) along the circumferential direction; The driving device comprises a servo motor (33) fixedly arranged on the front side of the gear cover (15); an output shaft of the servo motor (33) passes through the gear cover (15) and is fixedly provided with a transmission shaft (34); a rear end of the transmission shaft (34) passes through a driving hole (31) of the fourth bevel gear (19) and extends to the rear side of the fourth bevel gear (19); The clutch mechanism comprises a clutch sleeve (35) sleeved on a transmission shaft (34), and the clutch sleeve (35) is slidably connected to the transmission shaft (34) in the front-to-back direction, a cone (36) is fixedly arranged on the front side of the outer surface of the clutch sleeve (35), a sliding ring (37) is sleeved on the outer surface of the clutch sleeve (35), and a plurality of third springs (38) are evenly fixedly arranged between the sliding ring (37) and the cone (36) in the circumferential direction, and a clutch hole (39) is coaxially opened on the front side of the housing (1).

2. The curtain wall fall risk detection device based on vibration measurement according to claim 1 is characterized in that: An arc block (40) is fixedly provided on the rear side of the clutch sleeve (35); the outer side of the arc block (40) is in sliding contact with the inner side wall of the clutch hole (39) of the shell (1); a fan-shaped cavity (41) is provided on the inner side wall of the clutch hole (39) of the shell (1); an air vent (42) communicating with the fan-shaped cavity (41) is provided on the inner bottom wall of the shell (1); an arc block rotating accommodating body (43) is coaxially fixedly provided at the position where the outer shell (20) contacts the shell (1); an annular groove (44) is provided in the arc block rotating accommodating body (43).

3. The curtain wall fall risk detection device based on vibration measurement according to claim 2 is characterized in that: A vent hole (45) is provided on the front side of the gear cover (15).

4. The curtain wall fall risk detection device based on vibration measurement according to claim 3 is characterized in that: A vacuum puncture valve (47) is also provided on the front side of the housing (1).

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