Handheld bridge detector

Abstract

The utility model relates to the technical field of bridge detection, and particularly discloses a handheld bridge detector. The device comprises a detector host, two transducer probes, a handheld rod and a placement frame, a transverse sliding rail is arranged at the front end of the placement frame, the two transducer probes are installed on the transverse sliding rail in a sliding mode, a screw rod and a distance adjusting motor are installed on the placement frame, a screw sleeve is arranged on the screw rod, a hinge seat is fixed to the screw sleeve, and the two transducer probes are connected with the hinge seat through a cable-stayed connecting rod respectively; the front end of the handheld rod is rotationally connected with the rear end of the placement frame, a locking bolt is arranged at the joint, and a fixing seat for clamping and fixing the detector host is mounted on the handheld rod. The handheld bridge detector adopts an integral structural design, is convenient to hold and use, can complete detection operation by a single person, and is suitable for continuously detecting long cracks at higher positions; the distance between the two transducer probes can be automatically adjusted and locked, marks do not need to be painted on the wall face where a crack is located during detection, operation is easy, and use is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge detection technical field especially relates to a hand -held bridge detector. BACKGROUND

[0002] In the field of bridge health monitoring and safety evaluation, crack depth detection, as the core basis for structural damage evaluation and maintenance decision making, is an indispensable key link. At present, the instruments for bridge crack depth detection are mostly based on the principle of ultrasonic diffraction. Such detection instruments usually take a detection instrument host and two transducer probes as core components. In the process of detecting data processing, the spacing value of the two transducer probes is an important parameter for calculating the crack depth. Therefore, there are high requirements for the placement position of the two transducer probes. The current practice is to make marks on the wall surface where the crack is located with a ruler and a marker pen, and then to place the two transducer probes at the corresponding positions by hand for detection. The operation is relatively troublesome, and generally requires two people to cooperate to complete the detection operation, which is high in labor cost. When continuously detecting long cracks, the detection personnel need to frequently adjust the position, which is low in efficiency. In addition, the cracks of bridge engineering widely exist on the vertical surfaces, slope surfaces or top surfaces of different heights, and the distribution position is extremely complex, which further aggravates the difficulty of detection operation. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a hand -held bridge detector, which adopts an integral structure design, is convenient for hand -held use, can automatically adjust and lock the positions of the two transducer probes, and is convenient and fast to operate. Through the adjustable design, it has good applicability to different detection scenes.

[0004] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0005] A hand -held bridge detector, which comprises a detection instrument host and two transducer probes connected through a signal line, a hand -held rod and a mounting rack, a transverse sliding rail is fixed to the front end of the mounting rack, and the two transducer probes are slidingly installed on the transverse sliding rail, a screw rod and a distance adjusting motor for driving the screw rod to rotate are installed on the mounting rack, the extension directions of the screw rod and the transverse sliding rail are perpendicular, and a screw sleeve is arranged on the screw rod, a hinged seat is fixedly connected to the screw sleeve, and the hinged seat is located at the rear side of the transverse sliding rail, one inclined pull rod is connected between each transducer probe and the hinged seat, the two transducer probes are located on the two sides of the screw rod and always keep symmetrical distribution, the front end of the hand -held rod is rotationally connected with the rear end of the mounting rack, and a locking bolt is arranged at the connection position, a fixing seat for clamping the detection instrument host is installed on the hand -held rod, and a control line is connected between the distance adjusting motor and the detection instrument host.

[0006] Preferably, the detection ends of the two transducer probes always lie in the same plane, and the plane is located at the lower side of the transverse sliding rail.

[0007] Preferably, each transducer probe has a sliding part at its upper end, and the transverse slide rail has a transversely extending slide groove. The sliding part is slidably installed in the slide groove, and the upper end of the sliding part is rotatably connected to the corresponding connecting rod.

[0008] Preferably, a shoulder strap is installed on the handheld handle.

[0009] Preferably, the handheld lever adopts a plug-in telescopic structure.

[0010] Preferably, a handle is fixedly connected to the rear end of the handheld rod, and a grip is provided on the handheld rod, the grip being located on the front side of the handle.

[0011] Preferably, the front end of the handheld lever is provided with a forward-extending U-shaped portion, and the front end of the U-shaped portion is rotatably connected to the rear end of the mounting base.

[0012] Preferably, a retaining sleeve is fixedly connected to the fixed base. The retaining sleeve is fitted onto the hand handle and its position and direction can be adjusted. The fixed base is installed on the hand handle via the retaining sleeve.

[0013] Preferably, the mounting frame is equipped with a displacement sensor for feeding back transducer probe position information to the main unit of the detector.

[0014] Compared with the prior art, the handheld bridge detector of this utility model has the following beneficial technical effects:

[0015] 1. This handheld bridge detector adopts an integrated structural design, which is convenient for handheld use. Conventional crack detection work can be completed by a single person, saving manpower. When used handheld, the position adjustment range of the two transducer probes is large, which can reduce personnel position adjustment, and is especially suitable for continuous detection of long cracks at high positions.

[0016] 2. This handheld bridge detector can automatically adjust and lock the distance between the two transducer probes. There is no need to mark the wall surface where the crack is located during the detection, which makes the operation of this handheld bridge detector simple and convenient.

[0017] 3. The handheld pole and mounting frame of this handheld bridge detector adopt an adjustable structure design. The main unit of the detector and the handheld pole adopt a combined design, which is highly applicable and flexible in use, and can be applied to different detection scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0019] Figure 1 This is a schematic diagram of the handheld bridge detector in the embodiment.

[0020] Figure 2 This is a schematic diagram of the handheld bridge detector in another direction in the embodiment.

[0021] Figure 3 This is a schematic diagram of the front structure of the handheld bridge detector in the embodiment.

[0022] Figure 4 This is a schematic diagram of the wiring connection of the handheld bridge detector in the embodiment.

[0023] Figure 5 This is one of the schematic diagrams showing the folded state of the handheld bridge detector in the embodiment.

[0024] Figure 6 This is the second schematic diagram of the folded state of the handheld bridge detector in the embodiment.

[0025] Figure 7 This is a schematic diagram of one installation structure of the displacement sensor in the embodiment.

[0026] In the diagram, 1. transverse slide rail, 2. hinged seat, 3. mounting frame, 4. adjustable pitch motor, 5. screw rod, 6. diagonal tie rod, 7. threaded sleeve, 8. locking bolt, 9. U-shaped part, 10. hand handle, 11. main unit of the detector, 12. grip, 13. carrying handle, 14. fixed seat, 15. transducer probe, 16. locking sleeve, 17. slide groove, 18. sliding part, 19. signal line, 20. control line, 21. displacement sensor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] See Figures 1-4 As shown in the embodiment, the handheld bridge detector of the present invention is disclosed, which includes a detector host 11, two transducer probes 15, a handheld stick 10 and a mounting frame 3.

[0029] The front end of the mounting frame 3 is fixed with a transverse slide rail 1, two transducer probes 15 are slidingly installed on the transverse slide rail 1, and can be away from and close to each other, the detection ends of the two transducer probes 15 are always in the same plane, and the plane is located on the lower side of the transverse slide rail 1; a screw rod 5 and a distance adjusting motor 4 driving the screw rod 5 to rotate are installed on the mounting frame 3, the extending directions of the screw rod 5 and the transverse slide rail 1 are perpendicular to each other, and a threaded sleeve 7 is arranged on the screw rod 5; a hinged seat 2 is fixedly connected to the threaded sleeve 7, and the hinged seat 2 is located on the rear side of the transverse slide rail 1; the two transducer probes 15 are connected to the hinged seat 2 through a diagonal pull connecting rod 6 respectively, the two ends of the diagonal pull connecting rod 6 are rotatably connected to the transducer probes 15 and the hinged seat 2 respectively, and the two transducer probes 15 are located on the two sides of the screw rod 5 and always keep symmetrical distribution; based on the above structure, when the distance adjusting motor 4 drives the screw rod 5 to rotate, the threaded sleeve 7 and the hinged seat 2 move along the axial direction of the screw rod 5, i.e. the front and rear directions, and the diagonal pull connecting rod 6 drives the two transducer probes 15 to synchronously and reversely move along the transverse slide rail 1, so that the two transducer probes 15 are away from or close to each other, and the purpose of adjusting the distance between the two transducer probes 15 is achieved.

[0030] The front end of the handheld rod 10 is rotatably connected to the rear end of the mounting frame 3, and a locking bolt 8 is arranged at the connection position, so that the angle between the handheld rod 10 and the mounting frame 3 can be adjusted and fixed; a fixed seat 14 is arranged on the handheld rod 10, the detector host 11 can be clamped in the fixed seat 14, and then is arranged on one side of the handheld rod 10; the detector host 11 is connected to the two transducer probes 15 through a signal line 19, so as to obtain the feedback signals of the two transducer probes 15; a control line 20 is connected between the distance adjusting motor 4 and the detector host 11, a control module is arranged in the detector host 11, so as to control and regulate the working state of the distance adjusting motor 4; the distance adjusting motor 4 is connected with a power supply module, which can be integrated in the detector host 11, or can be designed as a separate component and arranged on the handheld rod 10 or the mounting frame 3.

[0031] As shown in Figure 1 , Figure 2 illustrated, based on the above design, when the depth of the cracks on the bridge is detected, the distance between the two transducer probes 15 is pre-adjusted according to the state and position of the cracks, the angle between the handheld rod 10 and the mounting frame 3 is pre-adjusted, and the parameters of the detector host 11 are pre-set; after the adjustment operation is completed, the two transducer probes 15 can be placed on both sides of the cracks to be detected by holding the detection device through the handheld rod 10, the information fed back by the two transducer probes 15 is stored and interpreted by the detector host, and the detection result is automatically generated, so that the depth detection of the bridge cracks is completed.

[0032] The technical advantages of the handheld bridge detector in application are as follows:

[0033] In the structure adopted by this handheld bridge detector, by setting up a handheld stick 10 and a mounting frame 3, the main unit of the detector 11 and the two transducer probes 15 and other dispersed components are reasonably arranged to form an integrated structure that is easy to operate by hand. A single person can complete the detection operation, saving manpower. Due to the setting of the handheld stick 10 and the mounting frame 3, the position adjustment range of the two transducer probes 15 is expanded, which can reduce the personnel's position adjustment and improve the detection efficiency. It is especially suitable for continuous detection of long cracks at high positions.

[0034] This handheld bridge detector uses an adjustable-pitch motor 4 to adjust the distance between two transducer probes 15, and utilizes the self-locking feature of the lead screw mechanism to lock the position of the two transducer probes 15. Combined with mature electromechanical control technology, it can achieve automatic adjustment and precise positioning of the distance between the transducer probes 15, reducing the cumbersomeness of debugging operations. After the distance between the two transducer probes 15 is pre-adjusted, there is no need to mark the wall surface where the crack is located during detection. As a result, this handheld bridge detector is very convenient and can significantly improve detection efficiency.

[0035] The handheld lever 10 and mounting frame 3 of this handheld bridge detector feature an adjustable design, allowing the angle to be adjusted according to the location of the crack. It is suitable for detecting cracks on the facade, slope, and top surface of bridge structures, making it highly versatile. Figure 5 , Figure 6 As shown, when not in use, the handheld bridge detector can be folded up with the handle 10 and the mounting frame 3 for easy storage and carrying.

[0036] The main unit 11 and the handheld stick 10 of this handheld bridge detector adopt a combined design. After the main unit is separated, two people can work together to carry out the detection operation, avoiding the excessive burden of single-person operation. Therefore, this handheld bridge detector has strong applicability and flexible use.

[0037] like Figure 2 , Figure 3 As shown, in a specific embodiment, each transducer probe 15 has a sliding part 18 at its upper end, and the transverse slide rail 1 has a transversely extending groove 17. The sliding part 18 is slidably installed in the groove 17, and the upper end of the sliding part 18 is rotatably connected to the corresponding connecting rod. The signal line 19 and the control line 20 can adopt a spring design, which can adapt to the change of the relative position of the components by stretching and deforming to avoid messy wiring. The pitch adjustment motor 4 adopts a micro stepper motor or a servo motor to facilitate precise adjustment of the distance between the two transducer probes 15.

[0038] In the preferred embodiment, a shoulder strap (not shown) is mounted on the handheld rod 10, and the operator can wear the shoulder strap on the shoulder during use to reduce the burden of holding, making the detection operation more flexible and labor-saving.

[0039] As shown in Figure 1 , Figure 2 , in the preferred embodiment, the handheld rod 10 adopts a plug-in telescopic structure, and the overall length of the handheld rod 10 can be adjusted according to the needs of use to ensure the flexibility of use and the efficiency of detection; when not in use, the handheld rod 10 can be adjusted to the shortest state to facilitate carrying and storage.

[0040] As shown in Figure 1 , Figure 2 , in the preferred embodiment, the handheld rod 10 is fixedly connected to a hand-held part 13 at the rear end, and a holding part 12 is provided on the handheld rod 10, which is located on the front side of the hand-held part 13. This design conforms to ergonomics, and is convenient for accurately controlling the position and direction of the two transducer probes 15 during handheld operation.

[0041] As shown in Figures 1-3 , in the preferred embodiment, a U-shaped part 9 extending forward is provided at the front end of the handheld rod 10, and the front end of the U-shaped part 9 is rotationally connected to the rear end of the mounting seat. In this way, the stress state of the connection can be optimized, aiming to improve the connection stability of the handheld rod 10 and the mounting seat.

[0042] As shown in Figure 1 , Figure 2 , in the preferred embodiment, a clamping sleeve 16 is fixedly connected to the fixing seat 14, the clamping sleeve 16 is sleeved on the handheld rod 10 and can adjust the position and direction, and the fixing seat 14 is installed on the handheld rod 10 through the clamping sleeve 16. In this way, the position and direction of the detector host 11 on the handheld rod 10 can be easily adjusted to facilitate real-time observation of the screen during detection and reduce the obstruction caused by the detector host 11 to the operation.

[0043] In the preferred embodiment, a displacement sensor 21 for feeding back the position information of the transducer probe 15 to the detector host 11 is mounted on the mounting bracket 3; in this way, the detector host 11 can determine the positions of the two transducer probes 15, and then can more accurately adjust the distance. In the specific implementation process, because the positions of the two transducer probes 15 are in a symmetrical relationship, one displacement sensor 21 can be installed on the mounting bracket 3 to detect the position of one transducer probe 15, and the actual distance between the two transducer probes 15 can be calculated based on the position information fed back by the displacement sensor 21. In addition, because the hinged seat 2 and the screw sleeve 7 have a position corresponding relationship with the two transducer probes 15, based on this, Figure 7As shown, a displacement sensor 21 can be installed on the mounting frame 3 to detect the position of the hinged seat 2 or the threaded sleeve 7, and the detector host 11 can also indirectly obtain the position information of the two transducer probes 15, and further obtain the actual distance between the two transducer probes 15.

Claims

1. A hand-held bridge detector comprising a detector main unit and two transducer probes connected via signal lines, characterized in that: The handheld rod and the mounting rack are further included; the transverse slide rail is fixed at the front end of the mounting rack, and the two transducer probes are slidably installed on the transverse slide rail; the screw rod and the distance adjusting motor driving the rotation of the screw rod are installed on the mounting rack, the extension direction of the screw rod is perpendicular to the extension direction of the transverse slide rail, the screw rod is provided with the screw sleeve, the hinged seat is fixedly connected to the screw sleeve, and the hinged seat is located at the rear side of the transverse slide rail; the two transducer probes are connected with the hinged seat through the inclined pull link respectively, the two transducer probes are located on the two sides of the screw rod and always keep symmetrical distribution; the front end of the handheld rod is rotatably connected with the rear end of the mounting rack, and the connecting position is provided with the locking bolt; the fixing seat for clamping the detector host is installed on the handheld rod, and the control line is connected between the distance adjusting motor and the detector host.

2. The hand-held bridge detector of claim 1, wherein: The detection ends of the two transducer probes are always located in the same plane, and the plane is located at the lower side of the transverse slide rail.

3. The hand-held bridge detector of claim 1, wherein: The upper end of each transducer probe is provided with a sliding part, the transverse slide rail is provided with the transversely extending sliding groove, the sliding part is slidably installed in the sliding groove, and the upper end of the sliding part is rotatably connected with the corresponding link.

4. The hand-held bridge detector of claim 1, wherein: The carrying strap is installed on the handheld rod.

5. The hand-held bridge detector of claim 1, wherein: The handheld rod adopts the plug-in type telescopic structure.

6. The hand-held bridge detector of claim 1, wherein: The hand-held rod is fixedly connected with the hand-held part at the rear end, and the hand-held rod is provided with the holding part located at the front side of the hand-held part.

7. The hand-held bridge detector of claim 1, wherein: The front end of the handheld rod is provided with the forwardly extending U-shaped part, and the front end of the U-shaped part is rotatably connected with the rear end of the mounting seat.

8. The hand-held bridge detector of claim 1, wherein: The clamping sleeve is fixedly connected to the fixing seat, the clamping sleeve is sleeved on the handheld rod and can adjust the position and direction, and the fixing seat is installed on the handheld rod through the clamping sleeve.

9. The hand-held bridge detector of claim 1, wherein: The displacement sensor for feeding back the position information of the transducer probe to the detector host is installed on the mounting rack.

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