CN212808026U

CN212808026U - Crack observation device

Info

Publication number: CN212808026U
Application number: CN202022070427.2U
Authority: CN
Inventors: 曾兰鑫; 陈马城; 刘茂昌
Original assignee: Fujian Hengshi Construction Development Co ltd
Current assignee: Fujian Hengshi Construction Development Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-03-26
Anticipated expiration: 2030-09-19

Abstract

The application relates to a crack observation device, which comprises a probe, an image display, a hollow strip-shaped shell and a connecting wire, wherein the connecting wire is used for connecting the probe and the image display; the probe is fixedly connected with the sliding block, and a first strip-shaped groove for exposing the probe is formed in the side wall of the strip-shaped shell; a driving assembly for driving the sliding block to slide along the length direction of the elongated shell is arranged in the elongated shell and comprises a first pulley and a second pulley, the first pulley and the second pulley are respectively fixed at one end of the inner cavity of the elongated shell, one side of the sliding block, which is close to the first pulley, is fixedly connected with a traction rope, and the other end of the traction rope sequentially rounds the first pulley and the second pulley and is fixedly connected with one side of the sliding block, which is far away from the first pulley; this application is when observing the crack of higher department of concrete structure, and easy operation is convenient, can improve work efficiency.

Description

Crack observation device

Technical Field

The application relates to the field of engineering detecting instruments, in particular to a crack observation device.

Background

Concrete cracks are physical structural changes generated under the action of internal and external factors of a concrete structure, and cracks generated by concrete under conventional static and dynamic loads and secondary stress are called load cracks, and mainly include direct stress cracks and secondary stress cracks. The direct stress crack means a crack generated by direct stress caused by an external load, and the secondary stress crack means a crack generated by secondary stress caused by the external load. Cracks are a major cause of the reduction in load-bearing capacity, durability, and water resistance of concrete structures. Therefore, in the construction supervision, in order to check the quality of the work, it is necessary to observe the cracks of the concrete.

A commonly used device in the observation of cracks is a crack observer. The current observation instrument on the market generally transmits a video signal to a secondary instrument through a camera probe, the secondary instrument amplifies a crack and then displays the crack on a screen of the secondary instrument, and the width of the observation instrument can be read according to a fixed scale on the screen. The secondary instrument and the general split type setting of probe of making a video recording need take the probe of making a video recording with one hand, and the secondary instrument is taken with one hand to the measuring process, and the removal probe of making a video recording is so that the probe of making a video recording aims at suitable crack observation position during the observation.

Chinese patent like publication No. CN208059833U discloses a crack visualizer for prison management, including image display, the control line of connection on image display, connect the probe on image display through the control line, be equipped with vertical adapting rod on the image display, be equipped with first spout on the adapting rod, sliding connection has first slider in the first spout, the probe is fixed on first slider, the one end that is close to image display on the adapting rod is fixed with miniature cylinder, the last piston rod that is equipped with of miniature cylinder, the one end and the first slider rigid coupling of piston rod.

The probe of the monitoring crack observation instrument in the technology can detect the cracks of a concrete structure at a higher position, and the crack observation instrument has the advantage of wider detection range, but the probe uses a cylinder as a driving device, needs an external compressed air source in the using process, needs to carry an air compressor or needs to be carried out in an area near a compressed air pipe for obtaining the air source, and leads the observation instrument to be inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In order to conveniently detect cracks of a concrete structure at a higher position, the application provides a crack observation device.

The application provides a crack observation device adopts following technical scheme:

a crack observation device comprises a probe, an image display, a hollow strip-shaped shell and a connecting wire for connecting the probe and the image display, wherein a sliding block is arranged in the strip-shaped shell, and the sliding block is connected with the strip-shaped shell in a sliding manner along the length direction of the strip-shaped shell; the probe is fixedly connected with the sliding block, and a first strip-shaped groove for exposing the probe is formed in the side wall of the strip-shaped shell; the driving assembly for driving the sliding block to slide is arranged in the elongated shell and comprises a first pulley and a second pulley, the first pulley and the second pulley are fixed at one end of the inner cavity of the elongated shell respectively, the sliding block is close to one side of the first pulley, a traction rope is fixedly connected to one side of the first pulley, and the other end of the traction rope sequentially bypasses the first pulley and the second pulley and then is fixedly connected to one side of the first pulley.

By adopting the technical scheme, one end of the traction rope is fixedly connected with the sliding block, and the other end of the traction rope sequentially rounds the first pulley and the second pulley and is fixedly connected with one side of the sliding block, which is far away from the first pulley, so that a closed path is formed; when a crack at a higher position of the concrete structure is observed, the sliding block can move up and down along with the traction rope by pulling the traction rope, so that the probe fixed on the sliding block moves to a proper height for observation; the probe reciprocates through pulling the haulage rope, and operation process is simple convenient, is favorable to improving work efficiency to the haulage rope that is used for driving the slider to remove and the pulley that is used for supplementary switching-over are light material, are favorable to alleviateing overall structure's weight, can alleviate observation personnel's intensity of labour.

Optionally, a holding rod is fixedly arranged at one end of the outer wall of the strip-shaped shell, the holding rod is close to the second pulley, and the holding rod is fixedly connected with a placing frame for installing the image display.

Through adopting above-mentioned technical scheme, image display places on the rack, can keep in relatively fixed position with holding the pole, and when the observation personnel held holding the pole and surveyed, need not take in addition or place image display, and the use is comparatively convenient.

Optionally, the slider is of a square structure, spring pieces are fixedly arranged on two opposite sides of the slider respectively, the spring pieces abut against the inner side wall of the elongated shell, and the spring pieces are subjected to pre-pressure.

By adopting the technical scheme, the spring piece subjected to the pre-pressure has the damping effect of blocking the relative displacement between the sliding block and the elongated shell, so that the sliding block positioned in the elongated shell is not easy to slide, the position of the sliding block is relatively stable and not easy to deviate in the observation process, and the crack observation work is facilitated.

Optionally, a wire guide shaft is rotatably connected in the elongated housing, the axis of the wire guide shaft is parallel to the axes of the first pulley and the second pulley, and the traction rope is wound on the outer wall of the wire guide shaft.

Through adopting above-mentioned technical scheme, when observing the crack, make the slider remove the position that needs to observe through the pulling haulage rope and observe, when observing the in-process of crack through image display, find that the probe does not need to remove at the optimum observation position, can finely tune through rotating the wire axis.

Optionally, the outer peripheral wall of the lead shaft is coated with a rubber layer.

Through adopting above-mentioned technical scheme, the rubber layer on wire shaft surface can increase the static friction between haulage rope and the wire shaft to the condition of skidding appears when reducing the wire shaft and driving the haulage rope and remove.

Optionally, an end cover is detachably connected to one end, away from the second pulley, of the elongated shell, an extension spring is fixedly arranged on the end cover, a pulley yoke is arranged in the elongated shell, the first pulley is connected with the pulley yoke, the pulley yoke is fixedly connected with one end, away from the end cover, of the extension spring, and the extension spring forces the first pulley to be away from the second pulley.

By adopting the technical scheme, the extension spring forces the first pulley to be far away from the pulley, namely the extension spring has tightening force on the traction rope, so that the traction rope can be tightened to be straight as much as possible, the moving distance of the traction rope is as close as possible to the moving distance of the probe driven by the slider, and the position of the probe is controlled more accurately; and the traction rope is in a tight state, so that the traction rope is driven to move when the wire shaft rotates.

Optionally, a guide rod is fixedly arranged on the inner wall of the elongated shell, which is far away from the end cover, the guide rod is arranged along the length direction of the elongated shell, and one end of the guide rod, which is far away from the fixed end, sequentially penetrates through the sliding block and the end cover; the end cover is in threaded connection with a driving rod, one end, far away from the end cover, of the driving rod penetrates through the sliding block and penetrates through the side wall, far away from one end of the end cover, of the strip-shaped shell, a flange is arranged at one end, far away from the end cover, of the driving rod in a protruding mode, and the flange is abutted to the inner side wall of the strip-shaped shell.

By adopting the technical scheme, the guide rod can guide the sliding block so as to reduce the situation that the sliding block overturns in the moving process, thereby being beneficial to keeping the moving stability of the sliding block; when the driving rod rotates, the end cover can be driven to be close to or far away from the strip-shaped shell, so that the extension spring stretches, and the effect of controlling the tension of the traction rope is achieved.

Optionally, the image display is located one side of the elongated housing far away from the first elongated groove, the elongated housing is provided with a rectangular groove for pulling the traction rope, the rectangular groove is located the elongated housing far away from the side wall of one side of the first elongated groove, and the rectangular groove is close to the second pulley.

By adopting the technical scheme, the image display and the probe are positioned on two opposite sides of the elongated shell, when an observer observes a crack, the probe is positioned right in front of the observer, and the observer can move the probe and observe the image display at the same time, so that the operation and the observation are convenient; the rectangular groove for pulling the hauling rope and the image display are positioned on the same side of the elongated shell, so that an observer can conveniently adjust the position of the probe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the traction rope, when a crack at a higher position of the concrete structure is observed, the probe can be moved to a proper height for observation by pulling the traction rope; the probe is moved by pulling the traction rope, so that the operation process is simple and convenient, and the working efficiency is improved; the traction rope and the pulley are made of light materials, so that the weight of the whole structure is favorably reduced, and the labor intensity of observation personnel is reduced;

2. through setting up the spring leaf that receives the pre-compaction for the spring leaf has the damping effect that hinders to take place relative displacement between slider and the rectangular shape casing, thereby makes the slider that is located the rectangular shape casing difficult for sliding, and the position relatively stable of observation in-process slider is difficult for deviating, is favorable to going on of crack observation work.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a sectional view of the present embodiment for embodying the internal structure of the housing;

FIG. 3 is a schematic structural diagram of the elongated housing driving assembly of the present embodiment;

fig. 4 is a schematic view of the connection of the lead shaft and the pulling rope according to the embodiment.

Description of reference numerals: 1. a strip-shaped shell; 11. a first bar-shaped groove; 12. a second strip groove; 13. a rectangular groove; 14. an end cap; 2. a slider; 21. a probe; 22. a spring plate; 3. an image display; 4. a connecting wire; 5. placing a rack; 51. a holding rod; 6. a drive assembly; 61. a hauling rope; 62. a first pulley; 63. a second pulley; 7. a wire guide shaft; 71. a knob; 72. a rubber layer; 81. a guide bar; 82. a drive rod; 821. a flange; 9. a pulley yoke; 91. a tension spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses crack observation device. Referring to fig. 1, a crack observation device includes a probe 21, an image display 3, a hollow elongated housing 1, and a connection wire 4 for connecting the probe 21 and the image display 3; the probe 21 is positioned in the elongated shell 1, a first strip-shaped groove 11 for exposing the probe 21 and a second strip-shaped groove 12 for penetrating the connecting wire 4 are formed in the side wall of the elongated shell 1, and a driving assembly 6 for driving the probe 21 to slide along the length direction of the elongated shell 1 is arranged in the elongated shell 1; one end of the outer wall of the elongated housing 1 is fixedly provided with a holding rod 51, and the holding rod 51 is fixedly connected with a placing frame 5 for installing the image display 3.

When observing the crack, the observer holds the holding rod 51 with the hand, moves the probe 21 to the vicinity of the crack to be observed on the concrete structure by the driving action of the driving unit 6, and observes the crack image on the image display 3 to perform the observation operation.

Referring to fig. 2 and 3, a square-structured sliding block 2 is arranged in the elongated housing 1, the sliding block 2 is connected with the elongated housing 1 in a sliding manner along the length direction of the elongated housing 1, and the probe 21 is fixedly connected with the sliding block 2; the driving assembly 6 comprises a first pulley 62 and a second pulley 63, the first pulley 62 and the second pulley 63 are respectively fixed at one end of the inner cavity of the elongated housing 1, a traction rope 61 is fixedly connected to one side of the slider 2 close to the first pulley 62, and the other end of the traction rope 61 sequentially winds around the first pulley 62 and the second pulley 63 and is fixedly connected to one side of the slider 2 far away from the first pulley 62, so that the traction rope 61 and the slider 2 form a closed path.

Referring to fig. 2, the image display 3 is located on one side of the elongated housing 1 away from the first elongated slot 11, the elongated housing 1 is provided with a rectangular slot 13 for pulling the pulling rope 61, the rectangular slot 13 is located on one side of the elongated housing 1 away from the probe 21, and the rectangular slot 13 is close to the second pulley 63; the observer can make the slider 2 drive the probe 21 to move up and down by pulling the traction rope 61 so as to observe cracks at higher positions on the concrete structure.

Referring to fig. 3 and 4, the wire guide shaft 7 is rotatably connected in the elongated housing 1, a knob 71 (see fig. 1) for rotating the wire guide shaft 7 is disposed outside the elongated housing 1, a rubber layer 72 is coated on an outer circumferential surface of the wire guide shaft 7, the wire guide shaft 7 is disposed between the first pulley 62 and the second pulley 63, an axis of the wire guide shaft 7 is parallel to axes of the first pulley 62 and the second pulley 63, and the traction rope 61 is wound around an outer wall of the wire guide shaft 7.

When the lead shaft 7 rotates, the slide block 2 is driven to move up and down through the traction rope 61, and the traction rope 61 is driven to move through the rotation of the lead shaft 7, so that the position of the probe 21 can be finely adjusted conveniently.

Referring to fig. 2, spring pieces 22 are fixedly arranged on two opposite sides of the slider 2, the spring pieces 22 are connected with the inner side wall of the elongated shell 1 in a sliding manner, the spring pieces 22 are subjected to pre-pressure, the abutted side walls of the spring pieces 22 are perpendicular to the side wall where the first elongated groove 11 is located, and the spring pieces 22 have a damping effect of blocking relative displacement between the slider 2 and the elongated shell 1, so that the slider in the elongated shell is not prone to sliding under the action of gravity.

Referring to fig. 2 and 3, one end of the elongated housing 1, which is far away from the second pulley 63, is detachably connected with the end cover 14, the end cover 14 is fixedly provided with the extension spring 91, the pulley frame 9 is arranged in the elongated housing 1, the first pulley 62 is connected with the pulley frame 9, the pulley frame 9 and the extension spring 91 are fixedly connected with one end of the end cover 14, the extension spring forces the first pulley 62 to be far away from the second pulley 63, namely, the extension spring 91 has a tension force on the traction rope 61, which is beneficial to enabling the distance of the traction rope 61 to move to be as close as possible to the distance of the slider 2 driving the probe.

Referring to fig. 2 and 3, the inner wall of the elongated housing 1 far away from the end cover 14 is fixedly provided with the guide rod 81, the guide rod 81 is arranged along the length direction of the elongated housing 1, one end of the guide rod 81 far away from the fixed end sequentially penetrates through the sliding block 2 and the end cover 14, and under the action of the guide rod 81, the sliding block 2 is not easy to overturn, so that the sliding block 2 is favorable for keeping the accuracy in moving.

Referring to fig. 2 and 3, the end cap 14 is in threaded connection with a driving rod 82, the driving rod 82 is parallel to the guide rod 81, one end of the driving rod 82, which is far away from the end cap 14, passes through the slider 2 and passes through the side wall of the elongated housing 1, which is far away from one end of the end cap 14, a flange 821 is convexly arranged at one end of the driving rod 82, which is far away from the end cap 14, and the flange 821 abuts against the inner; when the driving rod 82 rotates, the driving rod 82 drives the end cap 14 to move away from or close to the elongated housing 1, so that the extension spring 91 extends and contracts to adjust the tightness of the pulling rope 61.

The implementation principle of the embodiment of the application is as follows: when the crack at the higher position on the concrete structure needs to be observed, an observer holds the holding rod 51 with one hand to lift the crack observation device, so that the highest position of the strip-shaped shell 1 is higher than that of the crack to be observed, then the fingers of the other hand stretch into the rectangular groove 13 to pull the traction rope 61, so that the probe 21 moves to the position near the crack to be observed on the concrete structure along the up-down direction, and then the image displayed on the image display 3 is observed to perform crack observation; when the probe 21 needs to be moved vertically by a small amount, the wire guide shaft 7 can be moved by rotating the knob 71 to move the pull cord 61.

In the process of observing cracks, the mode that the driving probe 21 moves drives the sliding block 2 to move up and down for pulling the traction rope 61, the operation process is simple and convenient, the work efficiency is favorably improved, and the used materials of the driving assembly 6 are light materials such as the traction rope 61 and the pulley, the weight of the whole structure is favorably reduced, and the labor intensity of observers can be reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A crack observation device comprises a probe (21), an image display (3), a hollow strip-shaped shell (1) and a connecting wire (4) for connecting the probe (21) and the image display (3), and is characterized in that a sliding block (2) is arranged in the strip-shaped shell (1), and the sliding block (2) is connected with the strip-shaped shell (1) in a sliding manner along the length direction of the strip-shaped shell (1); the probe (21) is fixedly connected with the sliding block (2), and a first strip-shaped groove (11) for exposing the probe (21) is formed in the side wall of the strip-shaped shell (1); be equipped with drive assembly (6) that drive slider (2) slided in rectangular shape casing (1), drive assembly (6) include first pulley (62) and second pulley (63), first pulley (62) and second pulley (63) are fixed in the one end of rectangular shape casing (1) inner chamber respectively, slider (2) are close to one side fixedly connected with haulage rope (61) of first pulley (62), the other end of haulage rope (61) in proper order around behind first pulley (62) and second pulley (63) with slider (2) are kept away from one side fixed connection of first pulley (62).

2. A crack sight apparatus as claimed in claim 1, wherein: optionally, one end of the outer wall of the strip-shaped shell (1) is fixedly provided with a holding rod (51), the holding rod (51) is close to the second pulley (63), and the holding rod (51) is fixedly connected with a placing frame (5) for installing the image display (3).

3. A crack-observing device as claimed in claim 2, characterized in that: the sliding block (2) is of a square structure, spring pieces (22) are fixedly arranged on two opposite sides of the sliding block (2) respectively, the spring pieces (22) abut against the inner side wall of the strip-shaped shell (1), and the spring pieces (22) are subjected to pre-pressure.

4. A crack-observing device as claimed in claim 3, characterized in that: the interior rotation of rectangular shape casing (1) is connected with wire shaft (7), the axis of wire shaft (7) with first pulley (62) with the axis of second pulley (63) is parallel, haulage rope (61) with the outer wall winding setting of wire shaft (7).

5. A crack sight apparatus as claimed in claim 4, wherein: the outer peripheral wall of the lead shaft (7) is coated with a rubber layer (72).

6. A crack sight apparatus as claimed in claim 1, wherein: the one end that rectangular shape casing (1) kept away from second pulley (63) can be dismantled and is connected with end cover (14), extension spring (91) have set firmly in end cover (14), are equipped with pulley yoke (9) in rectangular shape casing (1), first pulley (62) are connected with pulley yoke (9), pulley yoke (9) with extension spring (91) keep away from the one end fixed connection of end cover (14), extension spring (91) force first pulley (62) are kept away from second pulley (63).

7. A crack sight apparatus as claimed in claim 6, wherein: a guide rod (81) is fixedly arranged on the inner wall, far away from the end cover (14), of the strip-shaped shell (1), the guide rod (81) is arranged along the length direction of the strip-shaped shell (1), and one end, far away from the fixed end, of the guide rod (81) sequentially penetrates through the sliding block (2) and the end cover (14); the end cover (14) is in threaded connection with a driving rod (82), one end, far away from the end cover (14), of the driving rod (82) penetrates through the sliding block (2) and penetrates through the side wall, far away from one end of the end cover (14), of the elongated shell (1), a flange (821) is arranged at one end, far away from the end cover (14), of the driving rod (82) in a protruding mode, and the flange (821) abuts against the inner side wall of the elongated shell (1).

8. A crack sight apparatus as claimed in claim 1, wherein: the image display (3) is located the elongated housing (1) is far away from one side of the first strip-shaped groove (11), the elongated housing (1) is provided with a rectangular groove (13) used for pulling the traction rope (61), the rectangular groove (13) is located the elongated housing (1) is far away from the side wall of one side of the first strip-shaped groove (11), and the rectangular groove (13) is close to the second pulley (63).