Ultrasonic bolt pretightening force on-line monitoring device

Abstract

The utility model relates to the technical field of bolt pre-tightening force on-line monitoring, and discloses an ultrasonic bolt pre-tightening force on-line monitoring device which comprises two hosts, a plurality of connecting holes are installed on the right sides of the hosts at equal intervals, signal cables are arranged on the right sides of the connecting holes, probes are installed at the front end and the rear end of the left side of the hosts, and the signal cables are connected with the probes. A button is arranged at the rear end of the left side of each main machine, a through hole is formed in the front side of each button, mounting plates are fixedly connected to the left end and the right end of the bottom of each main machine, control heads are mounted at the left end and the right end of each main machine, lifting mechanisms are mounted on the front side and the rear side of each main machine, and the lifting mechanisms are used for lifting the two main machines. According to the utility model, the installation position and wiring are firstly determined, then the host, the operation control head and the button are installed and fixed, the through hole and the signal cable are connected, the probe is inserted, and the ultrasonic stress sensor is pasted to form the monitoring device.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt pre -tightening force on -line monitoring technical field especially relates to an ultrasonic bolt pre -tightening force on -line monitoring device. BACKGROUND

[0002] Bolt pre -tightening force refers to in the assembly bolt connection, through the nut or bolt head, make bolt receive the tensile force and produce in the bolt inside axial tension, its function is guarantee the compactness and reliability of connection, in its use process, need to use monitoring device to monitor.

[0003] In the prior art, the monitoring process is mainly measured by ultrasonic wave, strain gauge, torque, pressure sensor, optical and passive wireless internet of things measurement method, wherein the ultrasonic bolt pre -tightening force on -line monitoring device is a device specially used for real -time monitoring bolt pre -tightening force change condition, it is based on the principle that the ultrasonic wave propagation characteristic in bolt changes with pre -tightening force, utilizes a series of sensor, signal processing unit and data transmission and processing device, continuously obtains and analyzes the relevant information of bolt pre -tightening force, in the prior art, detection is all monitored through single channel, and then there will be the situation that some areas cannot be monitored, so that some areas appear damage and are not monitored, so that the safety risk is enhanced. UTILITY MODEL CONTENT

[0004] In order to make up for the above insufficient, the utility model provides an ultrasonic bolt pre -tightening force on -line monitoring device, aims at improving the prior art that detection is all monitored through single channel, and there is the situation that some areas cannot be monitored.

[0005] In order to realize the above -mentioned purpose, the utility model adopts the following technical scheme: an ultrasonic bolt pre -tightening force on -line monitoring device, including two host computers, the right side equidistance of host computer is installed with a plurality of connecting holes, the right side of connecting hole is provided with signal cable, the left side front and rear end of host computer is installed with probe, the left side rear end of host computer is provided with button, the front side of button is installed with through -hole, the bottom left and right ends of host computer are all fixedly connected with mounting plate, the left and right ends of host computer are all installed with control head, the front and rear sides of host computer are all installed with lifting mechanism, the lifting mechanism is used for the lifting of two host computers.

[0006] Further description of the above technical scheme:

[0007] The lifting mechanism comprises a plurality of sliding groove plates, the plurality of sliding groove plates are respectively installed on the front and rear sides of the two mainframes, the adjacent sides of the two sliding groove plates are slidably connected with sliding rods, the middle parts of the sliding rods are rotatably connected with rotating shafts, the middle parts of the sliding groove plates are provided with clamping blocks, the front side of the clamping block is threadedly connected with a first screw, the bottom of the clamping block is threadedly connected with a threaded rod, the bottom of the threaded rod is fixedly connected with a clamping groove block, the middle upper parts of the sliding rods are slidably connected with sliding rings, and the adjacent sides of the two sliding rings are fixedly connected with a connecting rod.

[0008] As a further description of the above technical solution:

[0009] The rear left end of the mainframe is fixedly connected with a fixed plate, and the fixed plate is internally provided with a signboard.

[0010] As a further description of the above technical solution:

[0011] The bottom of the top mounting plate is fixedly connected with a first magic tape at the front and rear ends, and the top of the bottom mounting plate is fixedly connected with a second magic tape at the front and rear ends.

[0012] As a further description of the above technical solution:

[0013] The top of the top mainframe is fixedly connected with a fixed circular plate at the left and right sides, and the top of the fixed circular plate is fixedly connected with a handle.

[0014] As a further description of the above technical solution:

[0015] The top of the top mainframe is fixedly connected with a sliding groove block at the left and right ends, and the top of the sliding groove block is slidably connected with a sliding block.

[0016] As a further description of the above technical solution:

[0017] The front and rear ends of the left side of the mainframe are provided with probes, and the left side of the probe is provided with a fixed ring.

[0018] As a further description of the above technical solution:

[0019] The bottom of the top mainframe is provided with a second buffer plate at the middle part, and the top of the bottom mainframe is provided with a first buffer plate at the middle part.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. The utility model discloses a first determine installation position and wiring, then install and fix host computer, operation control head and button, connect through -hole and signal cable, insert probe, and paste ultrasonic stress sensor, constitute monitoring device, utilize ultrasonic monitoring bolt state, through denoising and analysis and evaluation fastening state and stress, use trend curve and threshold value and carry out early warning.

[0022] 2. The utility model discloses a install two host computers, first cross -connect with sliding rod and rotate pivot, then make sliding link rod move and slide ring on the rod, sliding rod slides in the sliding groove plate, after determining the distance between the host computers, rotate the clamping groove block to make the threaded rod rotate, adjust the clamping groove block position to the required position, finally connect the link rod with the clamping groove block bottom and prevent the distance between the host computers from changing. DRAWINGS

[0023] Figure 1 A perspective view of an ultrasonic bolt pre-tightening force online monitoring device is provided for the utility model;

[0024] Figure 2 A front view of an ultrasonic bolt pre-tightening force online monitoring device is provided for the utility model;

[0025] Figure 3 A side view of an ultrasonic bolt pre-tightening force online monitoring device is provided for the utility model;

[0026] Figure 4 A partial structure exploded view of an ultrasonic bolt pre-tightening force online monitoring device is provided for the utility model;

[0027] Figure 5 A partial structure schematic view of an ultrasonic bolt pre-tightening force online monitoring device is provided for the utility model.

[0028] Legend:

[0029] 1, host computer, 2, lifting mechanism, 201, sliding groove plate, 202, pivot, 203, clamping groove block, 204, threaded rod, 205, clamping block, 206, first screw, 207, connecting rod, 208, sliding ring, 209, sliding rod, 3, handle, 4, fixed circular plate, 5, connecting hole, 6, signal cable, 7, sliding groove block, 8, probe, 9, sliding block, 10, mounting plate, 11, through -hole, 12, button, 13, control head, 14, first magic tape, 15, second magic tape, 16, signboard, 17, fixed plate, 18, fixed ring, 19, first buffer plate, 20, second buffer plate. DETAILED DESCRIPTION

[0030] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0031] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figure 1 、 Figure 3 and Figure 4 An embodiment provided by the present application: an ultrasonic bolt pretightening force on-line monitoring device, comprising two host computers 1, a plurality of connecting holes 5 are equidistantly arranged on the right side of the host computer 1, a signal cable 6 is arranged on the right side of the connecting hole 5, the signal cable 6 plays a connecting role, a probe 8 is arranged on the left side of the host computer 1, a button 12 is arranged on the left side of the host computer 1, a through hole 11 is arranged on the front side of the button 12, the through hole 11 can be connected and installed by pressing the button 12, an installation plate 10 is fixedly connected to the left and right ends of the bottom of the host computer 1, a control head 13 is arranged on the left and right ends of the host computer 1, a lifting mechanism 2 is arranged on the front and back sides of the host computer 1, the lifting mechanism 2 is used for lifting the two host computers 1, a fixed circular plate 4 is fixedly connected to the top left and right sides of the top host computer 1, a handle 3 is fixedly connected to the top of the fixed circular plate 4, the whole can be carried by moving the handle 3, a probe 8 is arranged on the left side of the host computer 1, a fixed ring 18 is arranged on the left side of the probe 8, the fixed ring 18 plays a role of protecting and fixing the probe 8;

[0032] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figure 1 、 Figure 2 and Figure 5The lifting mechanism 2 comprises a plurality of sliding chute plates 201, which are respectively installed on the front and rear sides of the two main machines 1, the adjacent sides of the two sliding chute plates 201 are slidably connected with sliding rods 209, the middle parts of the sliding rods 209 are rotatably connected with rotating shafts 202, the middle parts of the sliding chute plates 201 are provided with clamping blocks 205, the front sides of the clamping blocks 205 are threadedly connected with first screws 206, the first screws 206 serve to connect and fix, the bottoms of the clamping blocks 205 are threadedly connected with threaded rods 204, the bottoms of the threaded rods 204 are fixedly connected with clamping groove blocks 203, the clamping groove blocks 203 can be rotated to drive the threaded rods 204 to rotate, the middle upper parts of the sliding rods 209 are slidably connected with sliding rings 208, the sliding rings 208 can slide on the sliding rods 209, the adjacent sides of the two sliding rings 208 are fixedly connected with connecting rods 207, the connecting rods 207 can be clamped with the clamping groove blocks 203, the bottoms of the top mounting plates 10 are fixedly connected with first magic tapes 14, the tops of the top mounting plates 10 are fixedly connected with second magic tapes 15, the first magic tapes 14 and the second magic tapes 15 serve to connect and fix, the bottoms of the top main machines 1 are provided in the middle with second buffer plates 20, the tops of the bottom main machines 1 are provided in the middle with first buffer plates 19, the second buffer plates 20 and the first buffer plates 19 serve to buffer;

[0033] With reference to Figure 1 、 Figure 2 and Figure 3 the left end of the rear side of the main machine 1 is fixedly connected with a fixed plate 17, the inside of the fixed plate 17 is provided with a signboard 16, which serves to warn, the left and right ends of the top of the top main machine 1 are fixedly connected with sliding chute blocks 7, the tops of the sliding chute blocks 7 are slidably connected with sliding blocks 9, the sliding blocks 9 can slide on the sliding chute blocks 7;

[0034] Working principle: first, the installation position and wiring path are determined through preliminary investigation of the site, then the main machine 1 is installed on each specified bolt to ensure firm installation, then the control head 13 is actuated and the button 12 is pressed, then the through hole 11 is connected and installed, then the signal cable 6 connected through the connecting hole 5 is connected with the corresponding connector, then the probe 8 is inserted into the corresponding position, and the ultrasonic stress sensor is attached to the original bolt end face, that is, an online monitoring device based on the ultrasonic stress principle is formed, through the ultrasonic stress measurement principle, it can be determined whether the bolt is loose, fails or even breaks, through the above process, the bolt fastening state and stress condition are obtained after wavelet denoising and time-frequency domain analysis, through the trend curve state and threshold value, the evaluation and early warning of bolt loosening, failure and fracture are compared;

[0035] When two host computers 1 need to be installed together, firstly, the two sliding rods 209 are connected through intersection, and are rotated through the rotating shaft 202, then the connecting rod 207 is slid, so that the two sliding rings 208 slide on the sliding rods 209, and the sliding rods 209 slide in the sliding groove plate 201 respectively, when the distance between the two host computers 1 is determined, the clamping groove block 203 is rotated, so that the threaded rod 204 is rotated, and then the position of the clamping groove block 203 is changed, and is rotated to the required position, then the connecting rod 207 is clamped with the bottom of the clamping groove block 203, so that the distance between the two host computers 1 is prevented from being changed unnecessarily.

[0036] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An ultrasonic bolt pre-tightening force on-line monitoring device comprising two main machines (1), characterized in that: The right side of the host (1) is equipped with a plurality of connection holes (5), the right side of the connection hole (5) is provided with a signal cable (6), the left side of the host (1) is equipped with a probe (8), the left side of the host (1) is provided with a button (12), the front side of the button (12) is equipped with a through hole (11), the bottom of the host (1) is fixedly connected with a mounting plate (10), the left and right ends of the host (1) are equipped with a control head (13), the front and rear sides of the host (1) are equipped with a lifting mechanism (2), and the lifting mechanism (2) is used for lifting the two hosts (1).

2. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The lifting mechanism (2) comprises a plurality of sliding groove plates (201), a plurality of sliding groove plates (201) are respectively arranged on the front and rear sides of the two hosts (1), the adjacent sides of the two sliding groove plates (201) are slidably connected with sliding rods (209), the middle parts of the sliding rods (209) are rotatably connected with rotating shafts (202), the middle parts of the sliding groove plates (201) are equipped with clamping blocks (205), the front sides of the clamping blocks (205) are threadedly connected with first screws (206), the bottoms of the clamping blocks (205) are threadedly connected with threaded rods (204), the bottoms of the threaded rods (204) are fixedly connected with clamping groove blocks (203), the middle upper parts of the sliding rods (209) are slidably connected with sliding rings (208), and the adjacent sides of the two sliding rings (208) are fixedly connected with connecting rods (207).

3. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The rear left end of the host (1) is fixedly connected with a fixed plate (17), and the inside of the fixed plate (17) is equipped with a signboard (16).

4. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The bottom of the top mounting plate (10) is fixedly connected with a first magic tape (14), and the top of the bottom mounting plate (10) is fixedly connected with a second magic tape (15).

5. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The top of the host (1) is fixedly connected with a fixed circular plate (4), and the top of the fixed circular plate (4) is fixedly connected with a handle (3).

6. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The top of the host (1) is fixedly connected with a sliding groove block (7), and the top of the sliding groove block (7) is slidably connected with a sliding block (9).

7. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The left side of the probe (8) is equipped with a fixed ring (18).

8. The ultrasonic bolt pre-tightening force on-line monitoring device according to claim 1, characterized in that: The bottom of the host (1) is equipped with a second buffer plate (20), and the top of the host (1) is equipped with a first buffer plate (19).

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