Crack observation instrument

Abstract

The utility model relates to the technical field of building monitoring equipment, in particular to a crack observation instrument which comprises an outer frame, an adjusting frame arranged at the bottom of the outer frame, a fixing frame fixedly installed on the inner side wall of the outer frame and a fixing base arranged in the fixing frame. And a limiting assembly is arranged in the fixed seat. According to the crack observation instrument, an outer frame is pressed to push an adjusting frame to drive a limiting plate and supporting legs to extrude a wall surface on the outer side of a crack, a bolt rod, a tension rod and a rotating base are inserted into the crack, an adjusting cylinder is pinched, the bolt rod is rotated into the crack, then the bolt rod is pinched, and then a locking pin is rotated; the locking pin moves in the bolt rod, the locking rope is pulled to contract, the contraction of the locking rope drives the rotating base to approach the rotating seat so as to extrude the tension rod, and the tension rod is stressed to be folded on the two sides of the hinge, so that the tension rod forms a triangular shape to extrude the inner wall of the crack.

Description

Technical Field

[0001] The utility model relates to the technical field of building monitoring equipment, in particular to a crack observation instrument. Background Art

[0002] A crack observation instrument is an instrument used to monitor crack changes and is widely used to detect crack width in structures such as bridges, tunnels, buildings, concrete pavements, and metal surfaces. Crack observation instruments can utilize non-contact image analysis technology, capturing images of cracks in the structure under test and then using algorithms to calculate the crack width. Another method involves contact displacement measurement, which directly measures the crack width to determine its actual width. Some crack observation instruments utilize high-precision optical systems and industrial CCD imaging technology. Through ultra-long-range non-contact image acquisition, interpolation techniques are used to generate a crack background image. After grayscale correction, the defect image is binarized to extract defect information.

[0003] Chinese patent CN220453293U discloses a crack observation instrument. This utility model uses an upper screw and a lower screw to cooperate with a threaded sleeve. When the screw sleeve is rotated, the upper screw and the lower screw move relative to each other, thereby adjusting the angle of the support base. The support legs support the lower screw. The crack observation instrument can be kept level with simple adjustments on uneven road surfaces, ensuring the accuracy of the observation data.

[0004] By comparing the above-mentioned utility model, it can be seen that the utility model can maintain good stability when measuring the ground, but it cannot observe locations such as walls. It requires auxiliary support to maintain stability during use, so that the measurement structure may be affected by external factors. The functionality is relatively simple and the flexibility is not high. Therefore, this utility model is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a crack observation instrument with the advantages of good flexibility and strong stability, which solves the problems that traditional crack observation instruments need assistance to maintain stability during use, have relatively simple functionality and low flexibility.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a crack observation instrument, comprising an outer frame, an adjustment frame arranged at the bottom of the outer frame, a fixing bracket fixedly mounted on the inner side wall of the outer frame, and a fixing seat arranged inside the fixing bracket, wherein a support assembly is arranged outside the adjustment frame, and a limit assembly is arranged inside the fixing seat;

[0007] The support assembly includes a plurality of limit plates movably connected to the outside of the adjustment frame, a rotating sleeve rotatably connected to the outside of the limit plate, a supporting foot fixedly installed on the side of the rotating sleeve, a connecting frame fixedly installed on the top of the rotating sleeve, a connecting cylinder rotatably connected to the outside of the connecting frame, a fixing rope fixedly installed on the outside of the connecting cylinder, an adjustment seat arranged on the outside of the fixing rope, a threaded cylinder arranged inside the adjustment seat, a traction rope arranged on the side of the threaded cylinder, a limit slide fixedly installed at the end of one side of the traction rope, a plurality of movable grooves opened on the side of the fixed seat, and a limit spring arranged on the outside of the limit slide;

[0008] The limiting assembly includes an adjusting cylinder rotatably connected to the inside of the fixing seat, a latch rod threadedly connected to the inside of the adjusting cylinder, a locking pin threadedly connected to the top of the latch rod, a locking rope arranged at the bottom of the locking pin, a rotating seat fixedly installed at the bottom of the latch rod, several tension rods rotatably connected to the outside of the rotating seat, a rotating base rotatably connected to the bottom of the tension rod, a mounting plate fixedly installed at the bottom of the adjusting cylinder, and several observation probes fixedly installed at the bottom of the mounting plate.

[0009] Furthermore, a plurality of rotatably connected adjusting nuts are provided on the top of the outer frame, and the bottoms of the adjusting nuts are embedded in the top of the adjusting frame and are rotatably connected to the adjusting frame through threads.

[0010] The beneficial effect of adopting the above further solution is: by arranging an adjusting nut and fixing the adjusting frame on the outside of the outer frame, rotating the adjusting nut can control the relative distance between the outer frame and the adjusting frame, thereby controlling the overall height of the device.

[0011] Furthermore, an annular frame is provided inside the fixing frame, and the fixing seat is vertically inserted into the annular frame and is rotationally connected to the fixing frame through threads.

[0012] The beneficial effect of adopting the above further solution is: an annular frame is provided on the inner side of the fixing frame and is threadedly connected to the fixing seat, so that the height of the fixing seat can be adjusted according to actual use needs, so as to better perform observation.

[0013] Furthermore, a plurality of plug interfaces are provided on the side surface of the adjustment frame, and one end of the limiting plate is embedded in the plug interface and fixed to the adjustment frame by a buckle.

[0014] The beneficial effect of adopting the above further solution is: providing an insertion interface on the outside of the adjustment frame for use with a limit plate, and controlling the internal depth of the limit plate in the insertion interface can achieve the effect of controlling the position of the support legs.

[0015] Furthermore, a threaded notch is provided on the side of the adjustment seat, the top of the threaded barrel is embedded in the threaded notch and is rotatably connected to the adjustment seat through a thread, and the ends of the fixing rope and the traction rope are respectively embedded in the threaded barrel and the adjustment seat and the two are rotatably connected.

[0016] The beneficial effect of adopting the above further solution is: a threaded barrel with a threaded connection is set on the inner side of the adjustment seat, and the depth of the threaded barrel inside the adjustment seat can be rotated to pull and adjust the fixing rope and traction rope on both sides, thereby strengthening the stability of the device when it is placed.

[0017] Furthermore, one end of the limiting slide rod transversely penetrates the side wall of the movable groove and is slidably connected to the fixed seat, and the two ends of the limiting spring are fixedly installed on the limiting slide rod and the side wall of the movable groove respectively.

[0018] The beneficial effect of adopting the above further solution is: by setting the limiting slide bar to move inside the movable groove and cooperating with the upper limit spring to reset, the fixing rope and the traction rope can remain in a state of being stretched and straightened.

[0019] Furthermore, a through slot is provided inside the latch rod and the rotating base, and the locking rope passes vertically through the through slot and is fixedly installed on the bottom and the rotating rod inside the rotating base.

[0020] The beneficial effect of adopting the above further solution is that a through slot is provided inside the latch rod and the rotating seat for the locking rope to move, so that the rotating base can be smoothly pulled closer to the rotating seat.

[0021] Furthermore, a rotatably connected hinge is provided on one side of the two adjacent tension rods, and the tension rods on both sides of the hinge rotate unidirectionally around the hinge.

[0022] The beneficial effect of adopting the above further solution is: a hinge is set on the side of the tension rod for connection, so that when the locking rope pulls the rotating base close to the rotating seat, the tension rod will close along the hinge to form a triangular state, squeezing the inner wall of the crack.

[0023] Compared with the existing technology, the present invention provides a crack observation instrument with the following beneficial effects:

[0024] 1. The crack observation instrument rotates the adjusting nut, and the end of the adjusting nut moves inside the adjusting frame, driving the adjusting frame to move relative to the outer frame. The outer frame is pressed to push the adjusting frame, driving the limit plate and the supporting feet to squeeze the wall outside the crack, and then the latch rod, the tension rod and the rotating base are inserted into the crack. While pinching the adjusting tube, the latch rod is rotated into the crack. Then, the latch rod is pinched and the locking pin is rotated. The locking pin moves in the latch rod, pulling the locking rope to contract. The contraction of the locking rope drives the rotating base closer to the rotating seat, thereby squeezing the tension rod. The tension rod is folded on both sides of the hinge under force, so that the tension rod forms a triangle shape to squeeze the inner wall of the crack, thereby achieving initial fixation of the device.

[0025] 2. The crack observation instrument is screwed into the interior of the adjustment seat by rotating the threaded barrel. After the threaded barrel is embedded in the adjustment seat, it will continuously pull the traction rope and the fixed rope closer together. The movement of the traction rope pulls the limit slide bar to continuously squeeze the limit spring. After the limit spring shrinks to the limit, the pin rod, traction rope, fixed rope and connecting frame form a triangular stable state. The stable rotating sleeve of the connecting frame rotates on the outside of the limit plate, thereby cooperating with the support feet to form a stable support state, which solves the problems of traditional crack observation instruments that require assistance to maintain stability during use, are relatively single in functionality, and have low flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top perspective view of the present utility model;

[0027] Figure 2 This is a bottom-up stereogram of the present invention;

[0028] Figure 3 This is a cross-sectional view of the utility model;

[0029] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle;

[0030] Figure 5 This is a partial cross-sectional view of the threaded cylinder and the adjustment seat of the utility model;

[0031] Figure 6 This is a partial cross-sectional view of the latch rod, rotating seat, and tension rod of the utility model structure.

[0032] In the figure: 1. Outer frame; 101. Adjusting nut; 2. Adjusting frame; 3. Fixing frame; 4. Fixing seat; 5. Support assembly; 501. Limiting plate; 502. Rotating sleeve; 503. Supporting foot; 504. Connecting frame; 505. Connecting cylinder; 506. Fixing rope; 507. Adjusting seat; 508. Threaded cylinder; 509. Pulling rope; 510. Limiting slide bar; 511. Moving groove; 512. Limiting spring; 6. Limiting assembly; 601. Adjusting cylinder; 602. Latch rod; 603. Locking pin; 604. Locking rope; 605. Rotating seat; 606. Tension rod; 607. Rotating base; 608. Mounting plate; 609. Observation probe; 610. Through slot; 611. Hinge. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-6 In this embodiment, a crack observation instrument includes an outer frame 1, an adjustment frame 2 provided at the bottom of the outer frame 1, a fixing frame 3 fixedly installed on the inner side wall of the outer frame 1, and a fixing seat 4 provided inside the fixing frame 3. A support assembly 5 is provided on the outer side of the adjustment frame 2, and a limit assembly 6 is provided inside the fixing seat 4.

[0035] The supporting assembly 5 includes a plurality of limiting plates 501 movably connected to the outside of the adjusting frame 2, a rotating sleeve 502 rotatably connected to the outside of the limiting plate 501, a supporting foot 503 fixedly mounted on the side of the rotating sleeve 502, a connecting frame 504 fixedly mounted on the top of the rotating sleeve 502, a connecting cylinder 505 rotatably connected to the outside of the connecting frame 504, a fixing rope 506 fixedly mounted on the outside of the connecting cylinder 505, an adjusting seat 507 arranged on the outside of the fixing rope 506, a threaded cylinder 508 arranged inside the adjusting seat 507, a traction rope 509 arranged on the side of the threaded cylinder 508, a limiting slide 510 fixedly mounted on one end of the traction rope 509, a plurality of movable grooves 511 provided on the side of the fixing seat 4, and a limiting spring 512 arranged on the outside of the limiting slide 510;

[0036] The limiting assembly 6 includes an adjusting cylinder 601 rotatably connected to the inside of the fixing seat 4, a latch rod 602 threadedly connected to the inside of the adjusting cylinder 601, a locking pin 603 threadedly connected to the top of the latch rod 602, a locking rope 604 arranged at the bottom of the locking pin 603, a rotating seat 605 fixedly installed at the bottom of the latch rod 602, a plurality of tension rods 606 rotatably connected to the outside of the rotating seat 605, a rotating base 607 rotatably connected to the bottom of the tension rod 606, a mounting plate 608 fixedly installed at the bottom of the adjusting cylinder 601, and a plurality of observation probes 609 fixedly installed at the bottom of the mounting plate 608.

[0037] In this example, a plurality of rotatably connected adjusting nuts 101 are provided on the top of the outer frame 1 , and the bottom of the adjusting nut 101 is embedded in the top of the adjusting frame 2 and is rotatably connected to the adjusting frame 2 via threads.

[0038] The outer frame 1 and the adjustment frame 2 are fixed by setting the adjustment nut 101. Rotating the adjustment nut 101 can also control the distance between the outer frame 1 and the adjustment frame 2, thereby achieving the purpose of controlling the overall height of the device.

[0039] In this embodiment, an annular frame is provided inside the fixing frame 3 , and the fixing seat 4 is vertically inserted into the annular frame and is rotationally connected to the fixing frame 3 via threads.

[0040] By arranging an annular frame and a fixing seat 4 on the inner side of the fixing frame 3 and fixing them by thread connection, when the device is placed as a whole, the observation height can be adjusted by rotating the fixing seat 4.

[0041] In this embodiment, a plurality of plug-in ports are provided on the side of the adjusting frame 2 , and one end of the limiting plate 501 is embedded in the plug-in port and fixed to the adjusting frame 2 by a buckle.

[0042] By setting an insertion interface on the outside of the adjustment frame 2 to fix the limit plate 501, the insertion depth of the limit plate 501 can be adjusted according to actual use needs, thereby changing the placement position of the support foot 503, making the overall effect more flexible.

[0043] In this example, a threaded groove is provided on the side of the adjustment seat 507, the top of the threaded barrel 508 is embedded in the threaded groove and is connected to the adjustment seat 507 through a threaded rotation, and the ends of the fixing rope 506 and the traction rope 509 are respectively embedded in the threaded barrel 508 and the adjustment seat 507 and the two are rotationally connected.

[0044] By setting a threaded notch on the side of the adjustment seat 507 and cooperating with the threaded barrel 508, the threaded barrel 508 can be rotated to the inner depth of the adjustment seat 507 to pull the fixing rope 506 and the traction rope 509 together, making the device more stable when fixed to the wall.

[0045] In this example, one end of the limiting slide bar 510 passes through the side wall of the movable groove 511 horizontally and is slidably connected to the fixed seat 4, and the two ends of the limiting spring 512 are fixedly installed on the limiting slide bar 510 and the side wall of the movable groove 511 respectively.

[0046] By arranging the limiting slide bar 510 in the moving groove 511 and fixing it with the limiting spring 512 , the fixing rope 506 and the traction rope 509 can maintain a stressed state in the initial state.

[0047] In this embodiment, a through slot 610 is formed inside the latch rod 602 and the rotating base 605 , and the locking rope 604 vertically passes through the through slot 610 and is fixed to the bottom and the rotating rod inside the rotating base 607 .

[0048] A through slot 610 is provided inside the latch rod 602 and the rotating seat 605 for the locking rope 604 to move, so that pulling the locking rope 604 can smoothly drive the rotating base 607 to move closer to the rotating seat 605.

[0049] In this example, a hinge 611 is provided on one side of two adjacent tension rods 606 , and the tension rods 606 on both sides of the hinge 611 rotate unidirectionally around the hinge 611 .

[0050] By providing a hinge 611 on the side of the tension rod 606 for connection, the tension rod 606 can be folded on both sides of the hinge 611, thereby squeezing the gap to form a fixed state.

[0051] It should be noted that the observation probe 609 is a prior art, and its specific structure and working principle are not described in detail in this article.

[0052] The working principle of the above embodiment is:

[0053] By rotating the adjusting nut 101, the end of the adjusting nut 101 moves inside the adjusting frame 2, driving the adjusting frame 2 to move relative to the outer frame 1, pressing the outer frame 1 to push the adjusting frame 2, driving the limit plate 501 and the support foot 503 to squeeze the wall outside the crack, and then inserting the latch rod 602, the tension rod 606 and the rotating base 607 into the crack, pinching the adjusting cylinder 601 while rotating the latch rod 602 to the crack, and then pinching the latch rod 602 and rotating the locking pin 603, the locking pin 603 moves in the latch rod 602, pulling the locking rope 604 to shrink, the shrinkage of the locking rope 604 drives the rotating base 607 to move closer to the rotating seat 605, thereby squeezing the tension rod 606, and the tension rod 606 is forced to fold on both sides of the hinge 611, so that the tension rod 606 is folded. The force rod 606 forms a triangle shape to squeeze the inner wall of the crack, thereby achieving preliminary fixation of the device, and then the threaded cylinder 508 is rotated to screw into the interior of the adjustment seat 507. After the threaded cylinder 508 is embedded in the adjustment seat 507, it will continuously pull the traction rope 509 and the fixed rope 506 closer together. The movement of the traction rope 509 pulls the limit slide 510 to continuously squeeze the limit spring 512. After the limit spring 512 shrinks to the limit, the pin rod 602, the traction rope 509, the fixed rope 506 and the connecting frame 504 form a triangular stable state, and the stable rotating sleeve 502 of the connecting frame 504 rotates on the outside of the limit plate 501, thereby cooperating with the support foot 503 to form a stable support state, solving the problems of traditional crack observation instruments that require assistance to maintain stability during use, have relatively single functionality, and have low flexibility.

[0054] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.

Claims

1. A crack observation instrument, comprising an outer frame (1), an adjustment frame (2) arranged at the bottom of the outer frame (1), a fixing frame (3) fixedly mounted on the inner side wall of the outer frame (1), and a fixing seat (4) arranged inside the fixing frame (3), characterized in that: A support assembly (5) is provided on the outside of the adjustment frame (2), and a limit assembly (6) is provided inside the fixing seat (4); The support assembly (5) includes a plurality of limit plates (501) movably connected to the outside of the adjustment frame (2), a rotating sleeve (502) rotatably connected to the outside of the limit plate (501), a support foot (503) fixedly installed on the side of the rotating sleeve (502), a connecting frame (504) fixedly installed on the top of the rotating sleeve (502), a connecting cylinder (505) rotatably connected to the outside of the connecting frame (504), a fixing rope (506) fixedly installed on the outside of the connecting cylinder (505), an adjustment seat (507) arranged on the outside of the fixing rope (506), a threaded cylinder (508) arranged inside the adjustment seat (507), a traction rope (509) arranged on the side of the threaded cylinder (508), a limit slide (510) fixedly installed at the end of one side of the traction rope (509), a plurality of movable grooves (511) opened on the side of the fixing seat (4), and a limit spring (512) arranged on the outside of the limit slide (510); The limit assembly (6) comprises an adjustment cylinder (601) rotatably connected to the interior of the fixing seat (4), a latch rod (602) threadedly connected to the interior of the adjustment cylinder (601), a locking pin (603) threadedly connected to the top of the latch rod (602), a locking rope (604) arranged at the bottom of the locking pin (603), a rotating seat (605) fixedly mounted at the bottom of the latch rod (602), a plurality of tension rods (606) rotatably connected to the outside of the rotating seat (605), a rotating base (607) rotatably connected to the bottom of the tension rod (606), a mounting plate (608) fixedly mounted at the bottom of the adjustment cylinder (601), and a plurality of observation probes (609) fixedly mounted at the bottom of the mounting plate (608).

2. A crack observation instrument according to claim 1, characterized in that: A plurality of rotatably connected adjusting nuts (101) are provided on the top of the outer frame (1), and the bottoms of the adjusting nuts (101) are embedded in the top of the adjusting frame (2) and are rotatably connected to the adjusting frame (2) via threads.

3. The crack observation instrument according to claim 1, characterized in that: An annular frame is provided inside the fixing frame (3), and the fixing seat (4) is vertically inserted into the annular frame and is rotationally connected to the fixing frame (3) via a thread.

4. The crack observation instrument according to claim 1, characterized in that: The side of the regulating frame (2) is provided with a plurality of plug-in interfaces, and one end of the limiting plate (501) is embedded in the inside of the plug-in interface and fixedly mounted to the regulating frame (2) by means of a buckle.

5. The crack observation instrument according to claim 1, characterized in that: The side of the adjustment seat (507) is provided with a threaded notch, the top of the threaded barrel (508) is embedded in the threaded notch and is rotatably connected to the adjustment seat (507) through a thread, and the ends of the fixing rope (506) and the traction rope (509) are respectively embedded in the threaded barrel (508) and the adjustment seat (507), and the two are rotatably connected.

6. The crack observation instrument according to claim 1, characterized in that: One end of the limiting slide bar (510) passes through the side wall of the movable groove (511) transversely and is slidably connected to the fixed seat (4). The two ends of the limiting spring (512) are fixedly mounted to the limiting slide bar (510) and the side wall of the movable groove (511), respectively.

7. The crack observation instrument according to claim 1, characterized in that: The latch rod (602) and the rotating base (605) are provided with a through slot (610) inside, and the locking rope (604) vertically passes through the through slot (610) and is fixedly installed on the bottom and the rotating rod inside the rotating base (607).

8. The crack observation instrument according to claim 1, characterized in that: A hinge (611) for rotational connection is provided on one side of the two adjacent tension rods (606) above and below, and the tension rods (606) on both sides of the hinge (611) rotate unidirectionally around the hinge (611).

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