CN113702278B - Grouting sleeve compactness detection device for concrete protection layer steel bar connection - Google Patents

Abstract

The application discloses a grouting sleeve compactness detection device for concrete protection layer steel bar connection, which comprises a grouting sleeve, a detection head and a plugging pipe, wherein one end of the grouting sleeve is provided with a plastic plug; the puncture tube is movably connected inside the plugging tube, and one end of the puncture tube is provided with a puncture part; the puncture pipe moves to one side of the plugging pipe to make the puncture part puncture the plastic plugging so as to make the detection surface in the grouting hole of the grouting sleeve communicated with the outside. According to the grouting sleeve compactness detection device for the concrete protection layer steel bar connection, the grouting hole can be isolated from the outside through the plastic plug arranged at one end of the plugging tube, liquid leakage is prevented from occurring after grouting is completed, a user can puncture the plastic plug through hammering the puncture tube to enable the puncture part to puncture the plastic plug, at the moment, the detection head can extend into the puncture part at one end of the puncture tube to be in contact with the detection surface for detection, the puncture action of the puncture part can not abrade the detection surface, and further the connection strength of the grouting sleeve can not be damaged.

Description

Grouting sleeve compactness detection device for concrete protection layer steel bar connection

Technical Field

The application relates to the technical field of compactness detectors, in particular to a grouting sleeve compactness detecting device for concrete protection layer steel bar connection.

Background

The grouting sleeve is a combination body assembled by a specially processed sleeve, matched grouting materials and reinforcing steel bars, and quick hardening non-shrinkage grouting materials are injected when the reinforcing steel bars are connected. When in use, the steel bars at the two ends are connected with the sleeve by means of the adhesive engagement effect between the concrete materials. The connecting performance is reliable, and the connecting device has the advantages of wide applicability, simplicity and convenience in installation and the like. When the grouting sleeve is used for connection, in order to ensure connection reliability, compactness detection is needed to ensure that engineering quality meets requirements.

According to the patent number: CN110208329B, published patent application No. 2021-07-20, discloses a sleeve grouting compactness detection method, comprising the following steps: the method comprises the steps of firstly, connecting the upper ends of eight metal wires with eight metal insertion tubes in a female connector in series through wires respectively, sleeving three positioning rings outside a first reinforcing steel bar at equal intervals, and installing the eight metal wires in the three positioning rings at equal angles in a circumferential direction; step two, installing three positioning rings and the first steel bars inside the bottom end of the sleeve, ensuring that the bottom end of the first steel bars is exposed outside the bottom end of the sleeve, and simultaneously enabling the female connector to pass through the grout outlet and be exposed outside the sleeve; step three, sleeving the first end cover outside the first steel bar, fixedly installing the first end cover outside the bottom end of the sleeve, fixedly installing the second steel bar inside the upper end of the sleeve through the second end cover, and ensuring that the upper end of the second steel bar is exposed outside the upper end of the sleeve; step four, horizontally placing the sleeve, simultaneously keeping the grouting opening and the grouting opening in the vertical direction, placing the female connector at a position higher than the grouting opening, grouting the sleeve through the grouting opening, vibrating the sleeve by using vibrating equipment while grouting, and stopping grouting until grouting liquid uniformly overflows from the grouting opening; step five, starting up a detection control display part of the sleeve grouting compactness detection device, inserting eight metal pins on the male connector into eight metal pins in the female connector, detecting grouting compactness in the sleeve through operating a touch display screen, displaying electrical parameters between eight detected adjacent two metal wires through the touch display screen by the detection control display part, judging whether the grouting compactness in the sleeve is qualified or not by detection personnel, pulling out the male connector after detection, shutting down the detection control display part, and finally placing the female connector into the grout outlet. The main technical effects are as follows: the nondestructive testing method is provided for the sleeve grouting compactness, is not convenient and quick, is convenient and quick to implement on site, is simple in steps, is convenient and quick, is easy to implement, can be used for detecting the grouting compactness in the sleeve without cutting and damaging the sleeve, can especially meet the nondestructive testing which can be implemented on site, can be used for implementing remedial measures on site when the sleeve grouting compactness is unqualified, can be used for continuing grouting in the sleeve until the grouting compactness is detected to be qualified, can save construction cost, can also be used for guaranteeing on-site construction quality, provides technical support for the nondestructive testing of the assembled building, and simultaneously plays a positive propulsion role for better development of the assembled building.

Before compactness detects, the inspector needs to use the hand drill to drill through the shutoff rubber on the grout sleeve grout outlet, and at the in-process of boring, the rubber material is too soft, and the drill bit can be very easy bore through rubber, bumps with the detection face.

Disclosure of Invention

The application aims to provide a grouting sleeve compactness detection device for concrete protection layer steel bar connection

In order to achieve the above object, the present application provides the following technical solutions:

the utility model provides a concrete protection layer is compactness detection device of grout sleeve for steel bar connection, includes grout sleeve and detects the head, the grout sleeve has a grout hole, still includes:

one end of the plugging tube is provided with a plastic plug;

the puncture tube is movably connected inside the plugging tube, and one end of the puncture tube is provided with a puncture part;

the puncture pipe moves to one side of the plugging pipe to enable the puncture part to puncture the plastic plug so as to enable the detection surface in the grouting hole of the grouting sleeve to be communicated with the outside.

Preferably, the puncture part has a plurality of puncture blades, each two of the puncture blades are kept connected by a plastic sheet, and the puncture part is pressed by the detection head to separate the plurality of puncture blades from each other.

Preferably, the device further comprises a blocking part arranged at one end of the puncture tube, the blocking part comprises a driving component, a plurality of blocking pieces and a connecting cylinder, and the detection head is inserted into the connecting cylinder and drives the driving component to keep rotating through the connecting cylinder so as to enable the blocking pieces to be unfolded.

Preferably, the blocking part further comprises an elastic unit which is arranged between the puncture tube and the blocking part and drives the blocking sheets to keep closed through self elasticity.

Preferably, the connecting cylinder comprises a guiding cylinder and a driving cylinder, the inner wall of the guiding cylinder is provided with a guiding groove, the inner wall of the driving cylinder is provided with a driving groove, and the guiding cylinder is inserted into the driving cylinder in a plugging manner, so that the guiding groove is communicated with the driving groove.

Preferably, a connecting part is arranged on the outer wall of the detection head, and the connecting part comprises a rotating ball which is movably arranged and is in sliding connection with the connecting cylinder through the rotating ball.

Preferably, the driving assembly comprises a gear, a rack and a plug rod, wherein the gear and the rack are arranged on the plugging piece, the plug rod is arranged at the bottom of the connecting cylinder, the gear is in plug connection with the plug rod, and the gear is driven to rotate on the rack through the plug rod so that the plugging piece is kept to rotate.

Preferably, the puncture device further comprises a squeeze block provided in the occlusion tube, and the puncture tube is rotated to bring the puncture portion into contact with the squeeze block, so that the puncture blade after deployment is closed.

Preferably, the outer wall of one side of the extrusion block is in a circular arc structure, and one of four corners is provided with an abutting part, and the abutting part abuts against the puncture blade.

Preferably, the puncture blade is integrally made of hard plastic.

In the technical scheme, the grouting sleeve compactness detection device for concrete protection layer steel bar connection has the following beneficial effects:

according to the application, the grouting hole can be isolated from the outside through the plastic plug arranged at one end of the plugging tube, so that leakage is prevented after grouting is completed, when detection is performed, a user can puncture the plastic plug through hammering the puncture tube, at the moment, the detection head can extend into the puncture part at one end of the puncture tube to be in contact with the detection surface for detection, the puncture action of the puncture part can not abrade the detection surface, the connection strength of the grouting sleeve can not be damaged, and meanwhile, the detection result can not be influenced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic perspective view of an embodiment of the present application;

fig. 2 is a schematic structural diagram of a plugging tube according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a connecting cylinder according to an embodiment of the present application;

fig. 4 is a schematic perspective sectional structure of a connecting cylinder according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a driving assembly according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating an assembly relationship of a driving assembly according to an embodiment of the present application;

FIG. 7 is a schematic view of a puncture tube according to an embodiment of the present application;

FIG. 8 is a schematic view of the structure of the movable position of the puncture tube according to the embodiment of the present application;

FIG. 9 is a schematic view of the structure of the inside of a plugging tube according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a connection slot according to an embodiment of the present application.

Reference numerals illustrate:

1. a detection head; 11. a connection part; 111. rotating the beads; 112. a mounting base; 2. plugging the pipe; 21. plugging by plastic; 22. a rubber sheet; 23. a boss; 24. a connecting groove; 241. a sliding part; 242. a clamping part; 3. a puncture tube; 31. a puncture part; 311. puncturing the blade; 32. a connector; 4. a blocking part; 41. a drive assembly; 411. a gear; 412. a rack; 413. inserting a connecting rod; 414. a fixing frame; 42. a blocking piece; 43. a connecting cylinder; 431. a guide cylinder; 432. a guide groove; 433. a drive cylinder; 434. a driving groove; 44. an elastic unit; 5. extruding a block; 51. and an abutting portion.

Detailed Description

In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-10, a grouting sleeve compactness detecting device for concrete protection layer steel bar connection, comprising a grouting sleeve having a grouting hole, further comprising:

a plugging tube 2 having a plastic plug 21 at one end;

a puncture tube 3 slidably connected to the inside of the occlusion tube 2, wherein a puncture portion 31 is provided at one end of the puncture tube 3;

the puncture tube 3 slides to the side of the plugging tube 2 to make the puncture part 31 puncture the plastic plug 21 so as to make the detection surface in the grouting hole of the grouting sleeve communicated with the outside.

The external diameter of shutoff pipe 2 is slightly less than the internal diameter of grout hole for inside shutoff pipe 2 can be very light entering into the grout hole, fixed being provided with sheet rubber 22 on the outer wall of shutoff pipe 2, sheet rubber 22 is the circular ring arc structure specifically, circular ring structure can make sheet rubber 22 laminate the outer wall of shutoff pipe 2 and the inner wall of grout hole more, sheet rubber 22 arc structure's one end can contact with the inner wall of grout sleeve grout hole, make the gap between shutoff pipe 2 and the grout hole by sheet rubber 22 separation, prevent to spill in the gap between grout from shutoff pipe 2 and the grout hole inner wall after the grout is accomplished. The rubber sheet 22 is arranged in a linear array, and can be sequentially contacted with the inner wall of the grouting hole when the plugging tube 2 enters the grouting hole, so as to plug gaps between the outer wall of the plugging tube 2 and the inner wall of the grouting hole. The one end at shutoff pipe 2 is provided with bellying 23, and bellying 23 is preferably discoid protruding, can hold its inside plastics shutoff 21, and bellying 23 inside is provided with plastics shutoff 21, and plastics shutoff 21 is preferably plastic film, can play the shutoff effect to the thick liquid in the grout hole, prevents that the thick liquid from entering into inside shutoff pipe 2.

The inner wall of the other end of the plugging tube 2 is slidably connected with a puncture tube 3, one end of the puncture tube 3 is provided with a puncture part 31, the puncture part 31 can puncture the plastic plug 21, the inner wall on one side of the plugging tube 2 is provided with a connecting groove 24, the connecting groove 24 is specifically divided into a sliding part 241 and a clamping part 242, the sliding part 241 is of a wedge-shaped structure, the clamping part 242 is of a circular ring-shaped structure, the clamping part 242 and the sliding part 241 are sequentially communicated, a connector 32 is fixedly arranged on the outer wall of the puncture part 31, the connector 32 is fixedly arranged on the outer wall of the puncture part 31 through welding or bonding, and the puncture part 31 is slidably connected inside the connecting groove 24 through the connector 32 on the outer wall. When the plastic plugging device is used, the connector 32 on the outer wall of the puncture part 31 can keep sliding on the outer wall of the sliding part 241 of the wedge-shaped structure, when a user uses the rubber hammer to hammer the puncture part 31, the puncture part 31 receives the impact force and slides in the plugging tube 2, when the connector 32 on the outer wall of the puncture part 31 slides to the joint of the sliding part 241 and the clamping part 242, the connector 32 on the circular arc-shaped outer wall can squeeze the joint of the sliding part 241 and the clamping part 242, the joint of the sliding part 241 and the clamping part 242 deforms, the connector 32 slides into the clamping part 242, and when the puncture tube 3 moves, the puncture part 31 at one end of the puncture tube 3 is pushed to keep moving, so that the tip of the puncture part 31 pierces the plastic plugging 21.

In another embodiment provided by the application, the connecting groove 24 on the inner wall of the plugging tube 2 is in a threaded structure, the connector 32 on the outer wall of the puncture tube 3 is in a spiral structure, the puncture tube 3 can be connected into the threaded connecting groove 24 of the plugging tube 2 through the connector 32 in the spiral structure in a threaded manner, when the plugging tube is used, a user does not need to use a rubber hammer for hammering, only needs to rotate one end of the puncture tube 3 outside the plugging tube 2, and the puncture tube 3 keeps rotating and simultaneously pushes the puncture part 31 arranged at one end of the puncture tube 3 to keep rotating and puncture the plastic plugging 21, so that the physical strength can be saved, the plastic plugging 21 can be punctured more easily, and meanwhile, the plastic plugging 21 can be punctured more conveniently without using tools.

According to the application, the plastic plug 21 arranged at one end of the plug tube 2 can keep the grouting hole isolated from the outside, so that leakage is prevented after grouting is completed, when detection is performed, a user can puncture the plastic plug 21 through hammering the puncture tube 3 to puncture the puncture part 31, at the moment, the detection head 1 can extend into the puncture part 31 at one end of the puncture tube 3 to contact with the detection surface for detection, the puncture action of the puncture part 31 can not abrade the detection surface, the connection strength of the grouting sleeve can not be damaged, and meanwhile, the detection result can not be influenced.

The puncture section 31 includes a plurality of puncture blades 311, and the puncture blades 311 may have a triangular structure, a diamond shape, a right trapezoid shape, or the like, as long as it is sufficient that one end of the puncture blades 311 after the splice is pointed. The plurality of puncture blades 311 take shutoff pipe 2 terminal surface axle center department as the centre of a circle to be the circumference array distribution, and puncture blades 311 are the slope setting for puncture blades 311's one end can make up the concatenation into the pointed end, and the outer wall of plastics shutoff 21 can be pierced to the pointed end. The plastic sheet is arranged between every two puncture blades 311, every two puncture blades 311 are connected through the plastic sheet, a gap between every two puncture blades 311 is blocked by the plastic sheet, when the plastic sheet is used, the detection head 1 is inserted into the tip formed by the puncture blades 311, one end of each puncture blade 311 is abutted with the outer wall of the detection head 1, the puncture blades 311 are separated from each other through the outer wall of the detection head 1, the plastic sheet between every two puncture blades 311 is torn, the puncture blades 311 are separated, the puncture blades 311 are unfolded simultaneously through the abutting action of the detection head 1 on the puncture blades 311, and the gap of the plastic plug 21 can be torn through one end of each puncture blade 311 positioned outside the plastic plug 21 when the puncture blades 311 are unfolded, so that the detection head 1 is convenient to contact with the internal concrete surface.

The puncture blade 311 is integrally made of hard plastic, so that the production cost can be saved while the plastic plug 21 is punctured, and the hard plastic has high hardness, so that the plastic film can be easily punctured, and one end of the puncture part 31 moves to the other side of the plastic plug 21.

The one end that keeps away from puncture portion 31 at puncture pipe 3 is provided with shutoff portion 4, make the one end of puncture pipe 3 isolated with the outside through shutoff portion 4, prevent that outside dust from entering into inside the shutoff pipe 2 and causing the jam, shutoff portion 4 includes drive assembly 41, connecting cylinder 43 and a plurality of shutoff piece 42, the quantity of shutoff piece 42 is preferably five, five shutoff piece 42's appearance is according to puncture pipe 3 terminal surface according to the pitch arc and is carried out five equally divide, make five shutoff piece 42 can laminate the appearance of puncture pipe 3 terminal surface completely in the shape after the concatenation, reduce or even stop partial dust to enter into puncture pipe 3 inside, five shutoff piece 42 splice the one end that puncture pipe 3 kept away from puncture portion 31 later can be sealed. When the puncture tube is used, a user holds the detection head 1 by hand, inserts the detection head 1 into the connecting tube 43, drives the connecting tube 43 to rotate when the detection head 1 is inserted into the connecting tube 43, drives the driving mechanism to rotate through the rotation of the connecting tube 43, and further expands the five plugging sheets 42, so that one end of the detection head 1 can extend into the puncture tube 3. By closing the end of the puncture tube 3 away from the puncture part 31, dust generated in the construction process of the construction site is prevented from entering the puncture tube 3, and the detection result is influenced.

The blocking portion 4 further comprises an elastic unit 44, the elastic unit 44 is preferably a compression spring, the elastic unit 44 drives the plurality of blocking pieces 42 to keep together so as to close the port of the puncture tube 3, and when the detection is not performed, the elastic unit 44 enables the plurality of blocking pieces 42 to close the end of the puncture tube 3 far away from the puncture portion 31. The elastic unit 44 may be not only a compression spring but also a structure having elastic potential energy such as a reed, an elastic block, or the like. The elastic unit 44 is arranged between the outer wall of the penetration tube 3 and the occlusion 4.

The connecting cylinder 43 comprises a guide cylinder 431 and a driving cylinder 433, wherein guide grooves 432 are formed in the outer wall of the guide cylinder 431, the guide grooves 432 are specifically of a trapezoid structure, the lower bottom of the trapezoid structure is located at one end, far away from the puncture tube 3, of the guide cylinder 431, the upper bottom of the trapezoid structure is located at one end, close to the puncture tube 3, of the guide cylinder 431, one end, narrow-mouth ends, of the upper bottom of the trapezoid structure of the guide grooves 432 are arranged at one end, open ends, at least three guide grooves 432 are arranged at one end, and the guide grooves 432 are distributed in a circumferential array by taking the axial center of the end face of the guide cylinder 431 as the center of a circle. The outer wall of the driving barrel 433 is provided with driving grooves 434, the driving grooves 434 are in a spiral structure, the inner wall of the driving grooves 434 is in a circular arc structure, the number of the driving grooves 434 is not less than three, and the plurality of driving grooves 434 are distributed in a circumferential array by taking the axial center of the end face of the driving barrel 433 as the circle center. The opening position of the driving groove 434 is matched with the opening position of the upper bottom of the trapezoid structure of the guiding groove 432, so that the driving groove 434 and the guiding groove 432 can be perfectly spliced. The upper bottom of the trapezoid structure of the guide groove 432 is matched with the diameter of the inner wall of the circular arc structure of the driving groove 434. The outer wall of the end face of the guide cylinder 431 is fixedly provided with an inserting joint, the inner wall of the end face of the driving cylinder 433 is provided with an inserting groove, and the guide cylinder 431 is inserted into the inserting groove of the driving cylinder 433 through the inserting joint. The guide cylinder 431 and the driving cylinder 433 are spliced, so that a processing factory can conveniently process the materials, and the processing cost is reduced. The guide slot 432 is provided with the convex chamfer near the one end of actuating cylinder 433, and the actuating groove 434 is provided with the convex chamfer near the one end of actuating cylinder 431, after the concatenation, the guide slot 432 does not have right angle form protruding with the actuating groove 434 concatenation department, can conveniently detect head 1 and insert inside the connecting cylinder 43, reduces the jamming of user when using and detect head 1.

At least three connecting parts 11 are arranged on the outer wall of the detection head 1, each connecting part 11 comprises a mounting seat 112 and a rotating bead 111, the plurality of mounting seats 112 are distributed in a circumferential array mode by taking the axis of the outer wall of the detection head 1 as the circle center, the mounting seats 112 are welded on the outer wall of the detection head 1, and the detection head 1 can be prevented from being collided with a grouting hole of a grouting sleeve in the using process. A spherical groove is formed in the outer wall of the mounting seat 112, and the inner wall of the spherical groove is matched with the outer wall of the rotating ball 111, so that the rotating ball 111 is clamped inside the spherical groove and can keep free rotation on the inner wall of the spherical groove. When the detection head 1 is inserted into the connecting cylinder 43 by a user, the open end of the guide groove 432 is positioned at the end of the guide cylinder 431 away from the puncture tube 3, so that the rotating beads 111 can easily enter the inside of the open end of the guide groove 432 when the detection head 1 is inserted into the guide groove 432, and the user can insert the detection head 1 into the connecting cylinder 43 without detailed alignment. The detection head 1 continues to be inserted into the connecting cylinder 43, along with the gradual insertion of the detection head 1 into the connecting cylinder 43, the rotating bead 111 slides gradually in the guide groove 432, when the rotating bead 111 slides to the joint of the guide groove 432 and the driving groove 434, since one end of the guide groove 432, which is close to the driving groove 434, is in a circular arc chamfer structure, one end of the driving groove 434, which is close to the guide groove 432, is in a circular arc chamfer structure, and the shape of the driving groove 434, which is close to the guide groove 432, is matched with the shape of the guide groove 432, which is close to the driving groove 434, the rotating bead 111 can easily slide from the guide groove 432 to the inside of the driving groove 434. After the rotating bead 111 slides into the driving groove 434, since the detection head 1 continues to be inserted into the connecting cylinder 43, the driving groove 434 is in a spiral structure, the rotating bead 111 keeps sliding along the inner wall of the driving groove 434, so that the driving cylinder 433 can keep rotating, and since the driving cylinder 433 and the guiding cylinder 431 keep fixedly inserted, the guiding cylinder 431 can keep rotating under the rotation of the driving cylinder 433, after the connecting cylinder 43 keeps rotating, the driving mechanism can be driven to keep rotating the plurality of blocking pieces 42 so as to separate the plurality of blocking pieces 42, and the top of the detection head 1 can be inserted into the puncture tube 3.

The driving assembly 41 comprises a fixing frame 414, a gear 411, a rack 412 and plug rods 413, wherein the plug rods 413 are fixedly arranged on the outer wall of the end face of the driving barrel 433, the number of the plug rods 413 is preferably five and is used for matching the number of the plugging sheets 42, and the plug rods 413 are distributed in a circumferential array by taking the axis of the end face of the driving barrel 433 as the circle center. The fixed frame 414 is fixedly installed on the end face of the puncture pipe 3 far away from one end of the puncture part 31, the sliding groove is formed in the outer wall of one side of the fixed frame 414, the elastic unit 44 is arranged in the sliding groove, the tooth frame 412 is fixedly installed on the outer wall of one side of the fixed frame 414, the outer wall of one side of the tooth frame 412 is provided with a notch, the inner wall of one side of the notch is provided with a tooth mouth, the sliding groove is positioned between the inner walls of two sides of the notch, the gear 411 is fixedly installed on the outer wall of one side of the plugging piece 42, the outer wall of one side of the plugging piece 42 is provided with a plugging hole for passing through the plugging rod 413, during installation, the plugging holes of the plugging pieces 42 are firstly required to be plugged onto the outer wall of the plugging rod 413, one end of the plugging rod 413 passes through the axis of the gear 411, then the tooth frame 412 is fixed onto the outer wall of the fixed frame 414 by using a screw, the sliding groove is required to be adjusted to the middle position of the notch during installation, then the connecting cylinder 43 is plugged into the sliding groove according to the plugging rod 413, one end of the plugging rod is positioned on the other side of the fixed frame 414, and then a nut is used for screwing the plugging rod 413 into one end of the plugging rod 413 on the other side of the fixed frame 414, and finally the plugging rod is required to be freely connected to the outer wall of the fixed frame 413 by the elastic unit through the plugging rod 413. When in use, a user keeps the connecting cylinder 43 rotating by using the detecting head 1, when the connecting cylinder 43 keeps rotating, the inserting connection rod 413 is driven to slide in the sliding groove, when the inserting connection rod 413 slides, the gear 411 is driven to keep rotating by taking the axis of the connecting cylinder 43 as the center of a circle, and as the gear 411 is meshed with the tooth mouth on the tooth frame 412, the gear 411 can keep rotating, and the blocking sheets 42 are driven to rotate by the rotation of the gear 411, so that the blocking sheets 42 are separated. After the detection is completed, the worker removes the detection head 1, resets the insertion rod 413 under the action of the elastic unit 44, and finally gathers the blocking pieces 42, so that one end of the puncture tube 3 far from the puncture part 31 is closed, and dust is prevented from entering the puncture tube 3.

The extrusion blocks 5 are fixedly arranged at one end, close to the plastic plug 21, of the inner wall of the plug tube 2, the number of the extrusion blocks 5 is not less than four, and the plurality of extrusion blocks 5 keep a circumferential array by taking the axis of the end face of the plug tube 2 as the circle center. When detecting, the detection head 1 inserts to go out inside the puncture portion 31, make the puncture portion 31 strut, after accomplishing the detection, puncture portion 31 can not automatic re-setting, there is some dust to enter into inside the puncture pipe 3 from the concrete part, thereby make the inside jam of puncture pipe 3, cause unable secondary measurement, in order to prevent that the dust from entering into inside the puncture pipe 3 from the concrete end, the staff can rotate puncture pipe 3, when puncture pipe 3 is rotatory, the outer wall contact of the puncture blade 311 that is strutted can with extrusion piece 5, and through the shape of extrusion piece 5 outer wall, make a plurality of puncture blades 311 gather together, so that the one end of puncture portion 31 of puncture pipe 3 keeps relatively closed, reduce the dust and enter into the possibility inside of puncture pipe 3 from puncture portion 31, in order to secondary detection.

The outer wall of the extrusion block 5 is in a circular arc structure, the extrusion block 5 is provided with an abutting part 51, the abutting part 51 is arranged at one four corners of the extrusion block 5, the abutting part 51 is protruded at the other four corners, and the abutting part 51 is in a circular arc structure from the other four corners of the extrusion block 5, so that the piercing blade 311 of the piercing part 31 can keep sliding on the circular arc outer wall, and finally, part of the piercing blade 311 abuts against the abutting part 51, so that part of the piercing blade 311 is folded, the opening of the piercing part 31 is reduced, and dust entering is reduced.

As another embodiment provided by the application, the extrusion block 5 may be in a pyramid structure, the outer wall of the pyramid structure may well fit with the outer wall of the piercing blade 311, when the piercing tube 3 rotates, the piercing blades 311 after being spread keep sliding on the side wall of the pyramid and gather together, and finally, part of the piercing blades 311 are folded through the vertex of the pyramid, so as to reduce the opening of the piercing portion 31 and reduce dust entering.

Those skilled in the art will appreciate that other similar connections may implement the present application. Such as welding, bonding, or bolting.

While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.

Claims (5)

1. The utility model provides a concrete protection layer is compactness detection device of grout sleeve for steel bar connection, includes grout sleeve and detects head (1), the grout sleeve has a grout hole, its characterized in that still includes:

a blocking tube (2) having a plastic blocking (21) at one end;

the puncture tube (3) is movably connected inside the plugging tube (2), and a puncture part (31) is arranged at one end of the puncture tube (3);

the puncture pipe (3) moves to one side of the plugging pipe (2) to enable the puncture part (31) to puncture the plastic plug (21) so as to enable the detection surface in the grouting hole of the grouting sleeve to be communicated with the outside;

the device comprises a puncture tube (3), and is characterized by further comprising a blocking part (4) arranged at one end of the puncture tube (3), wherein the blocking part (4) comprises a driving component (41), a plurality of blocking pieces (42) and a connecting cylinder (43), the detection head (1) is inserted into the connecting cylinder (43), and the driving component (41) is driven to keep rotating through the connecting cylinder (43) so as to enable the plurality of blocking pieces (42) to be unfolded;

the plugging part (4) further comprises an elastic unit (44) which is arranged on the puncture tube (3) and the connecting cylinder (43) comprises a guide cylinder (431) and a driving cylinder (433), wherein a guide groove (432) is formed in the inner wall of the guide cylinder (431), a driving groove (434) is formed in the inner wall of the driving cylinder (433), and the guide cylinder (431) is in plug connection with the driving cylinder (433) so that the guide groove (432) is communicated with the driving groove (434);

the outer wall of the detection head (1) is provided with a connecting part (11), and the connecting part (11) comprises a rotating ball (111) which is movably arranged and is in sliding connection with the connecting cylinder (43) through the rotating ball (111);

the driving assembly (41) comprises a gear (411) arranged on the plugging sheet (42), a rack (412) and a plug rod (413) arranged at the bottom of the connecting cylinder (43), wherein the gear (411) is in plug connection with the plug rod (413), and the gear (411) is driven to rotate on the rack (412) through the plug rod (413) so as to enable the plugging sheet (42) to keep rotating.

2. The grouting sleeve compactness detecting device for concrete cover rebar junction according to claim 1, wherein the piercing section (31) has a plurality of piercing blades (311), each two of the piercing blades (311) are kept connected by a plastic sheet, and the inside of the piercing section (31) is pressed by the detecting head (1) to separate the plurality of piercing blades (311) from each other.

3. The grouting sleeve compactness detection device for concrete protection layer rebar connection according to claim 2, further comprising a squeeze block (5) arranged in the plugging tube (2), wherein the puncture part (31) is abutted against the squeeze block (5) by the puncture tube (3) to close the unfolded puncture blade (311).

4. The grouting sleeve compactness detecting device for concrete protection layer steel bar connection according to claim 3, wherein the outer wall of one side of the extrusion block (5) is of a circular arc structure, and one of four corners is provided with an abutting part (51), and the abutting part (51) abuts against the puncture blade (311).

5. The grouting sleeve compactness detecting device for concrete protection layer steel bar connection according to claim 2, wherein the puncture blade (311) is integrally made of hard plastic.