Structural crack width measuring instrument

Abstract

The utility model discloses a structure crack width measuring instrument, which relates to the technical field of structure detection appliances and comprises a bottom block, the front end of the bottom block is fixedly connected with a moving device, the front end of the moving device is fixedly connected with two telescopic devices, one end of each telescopic device is provided with a fixing device, and the other end of each telescopic device is provided with a clamping device. The rear end of the bottom block is fixedly connected with a measuring device. A rotating motor on the first fixing frame is controlled to rotate, so that rotating teeth rotate on a movable rack, then the movable rack drives a telescopic auxiliary rod to slide in a telescopic main rod, stretching and retracting of the device are achieved, and when the length of the device is proper, the electric telescopic rod on the second fixing frame is controlled to be shortened, so that the device is fixed. Fixing columns on a moving plate penetrate through fixing holes to be inserted into fixing grooves, fixing of a telescopic device is achieved, the measuring device can freely stretch out and draw back, great convenience is brought to the device to measure cracks in the structure, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of structure detection tools, in particular to a structure crack width measuring instrument. Background Art

[0002] This instrument is specialized for detecting crack widths and surface microscopic defects in concrete structures. To use the crack gauge, connect the display screen and measuring probe with a cable. Turn on the power switch and place the two legs of the measuring probe on the crack. A magnified image of the crack will appear on the display screen. Slightly rotate the camera so that the crack image is perpendicular to the scale. The crack width is read based on the length of the scale line occupied by the crack image.

[0003] Chinese patent document CN206818147U discloses a crack width measuring instrument device, belonging to the field of building inspection tools. Its structure includes a barrel, an eyepiece, and an objective lens. The eyepiece and objective lens are respectively mounted at opposite ends of the barrel, and a focusing ring is provided on the barrel. The barrel is L-shaped, so that the axis of the eyepiece and objective lens are perpendicular to each other. A reflector is provided at a right-angle bend of the barrel, with the plane of the reflector forming a 45-degree angle with the axis of the eyepiece, so that light passing through the objective lens is reflected by the reflector and passes through the eyepiece. An LED light is mounted on the barrel on one side of the objective lens for illumination, and a battery compartment connected to the LED light is provided on the corresponding barrel. This utility model is more convenient to operate, more efficient, safer, and guarantees accuracy.

[0004] The existing technology has the following problems:

[0005] 1. The existing structural crack width measuring instrument has a fixed overall structure, but the crack is partially inside the structure, and the device cannot enter and measure the crack inside the structure, which reduces the scope of use of the device.

[0006] 2. Existing structural crack width measuring instruments are all estimated manually first, and then a suitable measuring ruler is selected for measurement. However, some places will interfere with the workers' vision, which may easily cause workers to misread or misread, reducing the measurement accuracy of the device. Utility Model Content

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A structural crack width measuring instrument comprises a bottom block, the front end of the bottom block is fixedly connected to a moving device, the front end of the moving device is fixedly connected to two telescopic devices, one end of the telescopic device is provided with a fixing device, and the rear end of the bottom block is fixedly connected to a measuring device.

[0009] Preferably, the moving device includes two fixed blocks, the right end of the right fixed block is fixedly connected to a rotating motor, the output end of the rotating motor is fixedly connected to a bidirectional threaded rod, the surface of the bidirectional threaded rod is threadedly connected to two threaded blocks, and the rear end of the threaded block is movably connected to the front end of the bottom block.

[0010] Preferably, the telescopic device includes a telescopic main rod, the rear end of the telescopic main rod is fixedly connected to the front end of the threaded block, the interior of the telescopic main rod is movably connected to a telescopic auxiliary rod, and the left end of the telescopic auxiliary rod is fixedly connected to a movable rack.

[0011] Preferably, the left side of the movable rack is meshed with a rotating tooth, the lower end of the rotating tooth is fixedly connected to a motor, the surface of the motor is fixedly connected to a fixing frame 1, and the right end of the fixing frame 1 is fixedly connected to the left end of the telescopic main rod.

[0012] Preferably, the fixing device includes two fixing frames 2, which are distributed at the upper and lower ends of the telescopic main rod. The right end of the fixing frame 2 is fixedly connected to the electric telescopic rod, and the right ends of the upper and lower electric telescopic rods are fixedly connected to the movable plate, and the left end of the movable plate is fixedly connected to the fixed column.

[0013] Preferably, a fixing hole is provided at the right end of the telescopic main rod, and a plurality of fixing grooves are provided at the right end of the telescopic auxiliary rod. The fixing hole and the interior of the fixing groove are movably connected to the surface of the fixing column.

[0014] Preferably, the measuring device includes a measuring box, a rear end of the measuring box is fixedly connected to a display screen, and an inner rear wall of the measuring box is fixedly connected to a distance measuring sensor.

[0015] Preferably, the left and right ends of the ranging sensor are fixedly connected with connecting wires, one end of the left and right connecting wires is fixedly connected with a measuring block, the rear end of the measuring block is fixedly connected to the front end of the telescopic sub-rod, the right end of the left measuring block is fixedly connected with a laser transmitter, and the left end of the right measuring block is fixedly connected with a laser receiver.

[0016] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0017] The utility model provides a structural crack width measuring instrument. Through the joint action of a telescopic main rod, a telescopic auxiliary rod, a mobile rack, a rotating tooth, a rotating motor, a fixing frame 1, a fixing frame 2, an electric telescopic rod, a mobile plate, a fixing column, a fixing hole, and a fixing slot, a measuring device can be freely extended and retracted, which greatly facilitates the device to measure cracks inside a structure and improves the practicality of the device. By controlling the rotation motor on the fixing frame 1 to rotate, the rotating tooth rotates on the mobile rack, and then the mobile rack drives the telescopic auxiliary rod to slide inside the telescopic main rod, thereby realizing the extension and retraction of the device. When the length of the device is suitable, by controlling the electric telescopic rod on the fixing frame 2 to shorten, the fixing column on the mobile plate passes through the fixing hole and is inserted into the fixing slot, thereby realizing the fixation of the telescopic device and improving the scope of use of the device.

[0018] The utility model provides a structural crack width measuring instrument. Through the joint action of a measuring box, a display screen, a distance measuring sensor, a connecting wire, a measuring block, a laser transmitter, and a laser receiver, the crack can be accurately measured, eliminating the need for manual measurement based on estimation, thereby improving the measurement accuracy. By controlling the measuring block to extend into the crack, the laser transmitter is controlled to transmit a signal, so that the laser receiver receives the signal, and then the distance between the laser transmitter and the laser receiver is measured, and the signal is fed back to the distance measuring sensor through the connecting wire. The distance and the width of the device itself are integrated by the distance measuring sensor and then displayed on the display screen, showing the actual distance of the crack, thereby improving the measurement accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a structural crack width measuring instrument of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the mobile device of the present utility model.

[0021] Figure 3 It is a structural schematic diagram of the telescopic device of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the fixing device of the present utility model.

[0023] Figure 5 It is a structural schematic diagram of the measuring device of the present utility model.

[0024] In the figure: 1. bottom block; 2. moving device; 3. telescopic device; 4. fixing device; 5. measuring device; 21. fixing block; 22. rotating motor; 23. bidirectional threaded rod; 24. threaded block; 31. telescopic main rod; 32. telescopic auxiliary rod; 33. moving rack; 34. rotating gear; 35. motor; 36. fixing frame 1; 41. fixing frame 2; 42. electric telescopic rod; 43. moving plate; 44. fixing column; 45. fixing hole; 46. fixing slot; 51. measuring box; 52. display screen; 53. distance measuring sensor; 54. connecting wire; 55. measuring block; 56. laser transmitter; 57. laser receiver. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation methods.

[0026] like Figure 1 As shown, a structural crack width measuring instrument includes a bottom block 1, a moving device 2 is fixedly connected to the front end of the bottom block 1, two telescopic devices 3 are fixedly connected to the front end of the mobile device 2, a fixing device 4 is provided at one end of the telescopic device 3, and a measuring device 5 is fixedly connected to the rear end of the bottom block 1.

[0027] like Figure 2 As shown, the moving device 2 includes two fixed blocks 21, the right end of the right fixed block 21 is fixedly connected to a rotating motor 22, the output end of the rotating motor 22 is fixedly connected to a bidirectional threaded rod 23, the surface of the bidirectional threaded rod 23 is threadedly connected to two threaded blocks 24, and the rear end of the threaded block 24 is movably connected to the front end of the bottom block 1.

[0028] In this embodiment, the rotation motor 22 on the fixed block 21 is controlled to rotate, so that the bidirectional threaded rod 23 rotates, and then the threaded block 24 moves on the bottom block 1, thereby achieving the measurement of the crack.

[0029] like Figure 3 As shown, the telescopic device 3 includes a telescopic main rod 31, the rear end of the telescopic main rod 31 is fixedly connected to the front end of the threaded block 24, the internal movably connected to the telescopic sub-rod 32, the left end of the telescopic sub-rod 32 is fixedly connected to the moving rack 33, the left side of the moving rack 33 is meshed with a rotating tooth 34, the lower end of the rotating tooth 34 is fixedly connected to the motor 35, the surface of the motor 35 is fixedly connected to a fixing frame 36, and the right end of the fixing frame 36 is fixedly connected to the left end of the telescopic main rod 31.

[0030] In this embodiment, by controlling the motor 35 on the fixed frame 36 to rotate, the rotating gear 34 rotates on the movable rack 33, and then the movable rack 33 drives the telescopic auxiliary rod 32 to slide inside the telescopic main rod 31, thereby realizing the telescopic device.

[0031] like Figure 4 As shown, the fixing device 4 includes two fixing frames 41, which are distributed at the upper and lower ends of the telescopic main rod 31. The right end of the fixing frame 41 is fixedly connected to the electric telescopic rod 42, and the right ends of the upper and lower electric telescopic rods 42 are fixedly connected to the movable plate 43. The left end of the movable plate 43 is fixedly connected to the fixed column 44. The right end of the telescopic main rod 31 is provided with a fixing hole 45, and the right end of the telescopic auxiliary rod 32 is provided with a plurality of fixing grooves 46. The fixing holes 45 and the interior of the fixing grooves 46 are movably connected to the surface of the fixing column 44.

[0032] In this embodiment, by controlling the electric telescopic rod 42 on the second fixing frame 41 to shorten, the fixing column 44 on the movable plate 43 is inserted into the fixing groove 46 through the fixing hole 45, thereby fixing the telescopic device 3 and improving the range of use of the device.

[0033] like Figure 5 As shown, the measuring device 5 includes a measuring box 51, a display screen 52 is fixedly connected to the rear end of the measuring box 51, a distance sensor 53 is fixedly connected to the inner rear wall of the measuring box 51, the left and right ends of the distance sensor 53 are fixedly connected to connecting wires 54, one end of the left and right connecting wires 54 is fixedly connected to a measuring block 55, the rear end of the measuring block 55 is fixedly connected to the front end of the telescopic sub-rod 32, the right end of the left measuring block 55 is fixedly connected to a laser emitter 56, and the left end of the right measuring block 55 is fixedly connected to a laser receiver 57.

[0034] In this embodiment, by controlling the measuring block 55 to extend into the crack, controlling the laser emitter 56 to emit a signal, and causing the laser receiver 57 to receive the signal, the distance between the laser emitter 56 and the laser receiver 57 is measured, and the distance is fed back to the distance measuring sensor 53 through the connecting wire 54. The distance and the width of the device itself are integrated by the distance measuring sensor 53 and then displayed on the display screen 52, showing the actual distance of the crack, thereby improving the measurement accuracy of the device.

[0035] The working principle of the present invention is as follows: by controlling the motor 35 on the fixed frame 36 to rotate, the rotating gear 34 rotates on the mobile rack 33, and then the mobile rack 33 drives the telescopic auxiliary rod 32 to slide inside the telescopic main rod 31, so as to realize the extension and contraction of the device. When the length of the device is suitable, by controlling the electric telescopic rod 42 on the fixed frame 2 41 to shorten, the fixing column 44 on the movable plate 43 passes through the fixing hole 45 and is inserted into the fixing groove 46, so as to realize the fixation of the telescopic device 3 and improve the use range of the device. By controlling the measuring block 55 to extend into the crack, the laser transmitter 56 is controlled to transmit a signal, so that the laser receiver 57 receives the signal, and then the distance between the laser transmitter 56 and the laser receiver 57 is measured, and the signal is fed back to the distance measuring sensor 53 through the connecting wire 54. The distance and the width of the device itself are integrated by the distance measuring sensor 53 and then displayed on the display screen 52, showing the actual distance of the crack, thereby improving the measurement accuracy of the device.

[0036] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A structural crack width measuring instrument, comprising a bottom block (1), characterized in that: The front end of the bottom block (1) is fixedly connected to a moving device (2), the front end of the moving device (2) is fixedly connected to two telescopic devices (3), one end of the telescopic device (3) is provided with a fixing device (4), and the rear end of the bottom block (1) is fixedly connected to a measuring device (5).

2. The structural crack width measuring instrument according to claim 1, characterized in that: The moving device (2) includes two fixed blocks (21), the right end of the right fixed block (21) is fixedly connected to a rotating motor (22), the output end of the rotating motor (22) is fixedly connected to a bidirectional threaded rod (23), the surface of the bidirectional threaded rod (23) is threadedly connected to two threaded blocks (24), and the rear end of the threaded block (24) is movably connected to the front end of the bottom block (1).

3. The structural crack width measuring instrument according to claim 2, characterized in that: The telescopic device (3) comprises a telescopic main rod (31), the rear end of the telescopic main rod (31) is fixedly connected to the front end of the threaded block (24), the interior of the telescopic main rod (31) is movably connected to a telescopic auxiliary rod (32), and the left end of the telescopic auxiliary rod (32) is fixedly connected to a movable rack (33).

4. The structural crack width measuring instrument according to claim 3, characterized in that: The left side of the movable rack (33) is meshedly connected with a rotating tooth (34), the lower end of the rotating tooth (34) is fixedly connected with a motor (35), the surface of the motor (35) is fixedly connected with a fixing frame 1 (36), and the right end of the fixing frame 1 (36) is fixedly connected to the left end of the telescopic main rod (31).

5. The structural crack width measuring instrument according to claim 3, characterized in that: The fixing device (4) includes two fixing frames (41), the fixing frames (41) are distributed at the upper and lower ends of the telescopic main rod (31), the right end of the fixing frame (41) is fixedly connected to the electric telescopic rod (42), the right ends of the upper and lower electric telescopic rods (42) are fixedly connected to the moving plate (43), and the left end of the moving plate (43) is fixedly connected to the fixing column (44).

6. The structural crack width measuring instrument according to claim 5, characterized in that: The right end of the telescopic main rod (31) is provided with a fixing hole (45), and the right end of the telescopic auxiliary rod (32) is provided with a plurality of fixing grooves (46). The interiors of the fixing holes (45) and the fixing grooves (46) are movably connected to the surface of the fixing column (44).

7. The structural crack width measuring instrument according to claim 1, characterized in that: The measuring device (5) comprises a measuring box (51), a display screen (52) is fixedly connected to the rear end of the measuring box (51), and a distance sensor (53) is fixedly connected to the inner rear wall of the measuring box (51).

8. The structural crack width measuring instrument according to claim 7, characterized in that: The left and right ends of the distance measuring sensor (53) are fixedly connected to connecting wires (54), one end of the left and right connecting wires (54) is fixedly connected to a measuring block (55), the rear end of the measuring block (55) is fixedly connected to the front end of the telescopic auxiliary rod (32), the right end of the left measuring block (55) is fixedly connected to a laser transmitter (56), and the left end of the right measuring block (55) is fixedly connected to a laser receiver (57).

Images