CN215150214U - Roughening tool for precast beam surface of composite beam - Google Patents

Abstract

The utility model discloses a napping instrument for prefabricated beam surface of composite beam, including single arm-drag, pressure spring, napping nail and stay cord, the single arm-drag has two, and their one end can open and shut through the round pin axle and articulate, and the pressure spring is connected between two single arm-drag with pre-compaction state, and the downside of two single arm-drag can be dismantled along length direction respectively and be connected with one row of napping nail, and the stay cord is connected and is drawn the napping instrument and remove along the beam surface in the hinged end of single arm-drag. The whole tool is of a herringbone structure, and tension is applied to the pull arms outwards through the pressure springs, so that the outer sides of the opening ends between the two pull arms can be attached to the inner walls of the beam stirrups. When this instrument is dragged in the horizontal support of articulated end through the arm-drag, can once only evenly pull out one row of row slot at the full width of beam surface, still can guarantee the drawing hair degree of depth when guaranteeing the slot continuity, guarantee the drawing hair quality of whole beam surface, operating efficiency is high. The compression amount of the pressure spring can be changed along with the inner hollow size of the stirrup, and the napping nails can be installed at intervals according to the inner hollow size of the stirrup and can be suitable for napping beam surfaces with different widths.

Description

Roughening tool for precast beam surface of composite beam

Technical Field

The utility model belongs to assembly type structure PC component field, concretely relates to napping instrument for superposed beam precast beam face.

Background

In the assembled building project, the superposed beams and the superposed floors are in a structure of a prefabricated forming body and a cast-in-place concrete layer, and the prefabricated forming body in a factory is transported to the project site for installation to reproduce cast-in-place concrete. Therefore, the gluing quality of the superposed beam and the superposed floor slab and the cast-in-place concrete directly influences the overall structural performance and the service life of the engineering, improves the galling quality of the surface of the prefabricated forming body, and plays an important role in the connection of the superposed beam and the superposed floor slab and the cast-in-place concrete.

In order to ensure the cementing effect between new and old concrete, a groove is drawn out of the surface of the beam before the concrete of the prefabricated forming body is finally set to increase the roughness of the surface of the prefabricated forming body, so that the contact area between the prefabricated beam surface and cast-in-place concrete is increased.

The existing roughening tool for the beam surface of the composite beam is usually a long strip-shaped body with one forked end welded by steel bars, workers are required to manually perform roughening treatment at required positions, and repeated roughening needs to be separated according to the distance between stirrups during operation. Because the distance between the beam stirrups is smaller, generally 200-300mm, the distance between the stirrups in the dense area is smaller, the operation is very inconvenient, the efficiency is low, and the pulling quality cannot be guaranteed. In addition, different tools need to be manufactured for the beam bodies with different widths, and time and materials are wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an applicable instrument that once only draws hair in the roof beam face of different width improves work efficiency greatly when guaranteeing to draw the hair quality.

The utility model provides a this kind of a napping instrument for prefabricated beam surface of composite beam, including single arm-drag, pressure spring, napping nail and stay cord, the single arm-drag has two, and their one end can open and shut through the round pin axle and articulate, and the pressure spring is connected between two single arm-drag with pre-compaction state, and the downside of two single arm-drag can be dismantled along length direction respectively and be connected with one row of napping nail, and the stay cord is connected and is drawn the napping instrument and remove along the beam surface in the hinged end of single arm-drag.

In an embodiment of the above technical scheme, a front end section of the bottom surface of the pull arm is an upper inclined surface, a rear part of the front end section is a horizontal plane, and a row of threaded holes are uniformly distributed in the horizontal plane along a length direction.

In one embodiment of the above technical solution, the bottom front end section of the pull arm is inclined upward by 15-20 °.

In one embodiment of the above technical solution, the galling nail comprises a galling section and a connecting section at the top of the galling section, and the connecting section is provided with an external thread matched with the threaded hole.

In one implementation mode of the technical scheme, the distance between the adjacent napping nails on the same draw arm is 20-30mm larger than the diameter of the beam precast aggregate.

In one embodiment of the above technical solution, the height of the napping section of the napping nail is not less than 6 mm.

In one embodiment of the above technical solution, a groove is formed in a center plane in a thickness direction at a front end of one of the pull arms, pin shaft mounting holes are symmetrically formed in entities on both sides of the groove, a flat plate matched with the groove is formed at a front end of the other pull arm, and the flat plate is provided with the pin shaft mounting holes; when the two pull arms are assembled, the flat plate is inserted into the groove and then is hinged through the pin shaft.

In an embodiment of the above technical scheme, the two ends of the pin shaft are symmetrically connected with the ear plates of the connecting holes, and the pull rope passes through the connecting holes.

The utility model discloses can open and shut the one end of two single arms and articulate, install the pressure spring between two single arms, make whole instrument form chevron structure, on the one hand give the single arm-drag outwards exert tension through the pressure spring, make the inner wall that the open end outside between two single arms can laminate the roof beam stirrup, at two single arm-drag bottom surfaces demountable installation napping nail respectively, so when dragging this instrument through the articulated end level of single arm-drag, can once only evenly pull out one row of row's slot at the full width of beam-surface, still can guarantee the napping degree of depth when guaranteeing the slot continuity, guarantee the napping quality of whole beam-surface promptly, high operation efficiency. On the other hand, the compression spring has a compression amount which can be changed along with the change of the inner hollow size of the stirrup, and the napping nails can be installed at intervals according to the inner hollow size of the stirrup, so that the tool can be suitable for napping beam surfaces with different widths. In short, the tool can perfectly achieve its design purpose.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic three-dimensional structure diagram of the present embodiment.

Fig. 5 is a schematic view of the usage state of the present embodiment.

Detailed Description

As can be seen from fig. 1 to 5, the roughening tool for a precast beam surface of a composite beam disclosed in this embodiment includes a pulling arm 1, a compression spring 2, a roughening nail 3, a pin 4, an ear plate 5 and a pulling rope (not shown in the drawings).

In the embodiment, the pull arm 1 is made of a square tube, and meanwhile, the front end section of the bottom surface of the square tube is processed into an upper inclined surface, the inclined angle is preferably 15-20 degrees, and the rear part of the front end section is a horizontal section. The arrangement of the upper inclined surface avoids the blocking of precast aggregate of the beam surface in the movement process of the pull arm.

A row of threaded holes are uniformly distributed in the horizontal section of the bottom surface of the pull arm 1, and the distance between every two adjacent threaded holes is larger than the diameter of the prefabricated aggregate by about 20 mm.

A rectangular groove is formed in the front end of one of the pull arms along the center face in the thickness direction, pin shaft mounting holes are symmetrically formed in the entities on the two sides of the rectangular groove, a horizontal plate matched with the rectangular groove is connected to the front end of the other pull arm, and the pin shaft mounting holes are formed in the horizontal plate.

When the two pull arms are assembled, the horizontal plate is inserted into the rectangular groove and hinged through the pin shaft, and the pin shaft is in clearance fit with the mounting hole, so that the two pull arms can flexibly rotate around the pin shaft 4.

The two ends of the pin shaft are symmetrically connected with the ear plates 5, and the ear plates are provided with pull rope connecting holes.

After the two pull arms 1 are hinged, the pressure spring 2 is fixed between the two pull arms as required, and the pressure spring is fixed in a pre-pressing state, so that the pressure spring applies tension to the two pull arms outwards, and the outer side of the rear end of each pull arm can be attached to the inner side surface of a beam stirrup.

The setting of pressure spring makes this instrument can be according to the different automatically regulated gross width that draws hair of roof beam body width.

The napping nail 3 comprises a napping section and a connecting section at the top of the napping section, the height of the napping section is not less than 6mm, the outer wall of the connecting section is provided with an external thread matched with a threaded hole at the bottom surface of the draw arm,

the napping nails 3 are detachably connected into the threaded holes in the bottom surface of the draw arm 1 through connecting sections of the napping nails, the distance between every two adjacent napping nails is determined according to the width of the beam body, and the principle is that the density of the napping nails for the wider beam body is higher and the density of the napping nails for the narrower beam body is lower.

One or several screw holes can be selected to install the napping nail according to the needs when the beam body is narrower, and when the beam body is wider, the napping nail can be installed in each screw hole to meet the napping requirement.

After the structural member is assembled, a pull rope is installed in the connecting hole in the lug plate, and the length of the pull rope is determined according to the length of the beam body.

As shown in figure 5, when the tool is used, the tool is placed in the stirrup at one end of the beam body, the pull rope extends out of the other end of the beam body, and at the moment, the outer sides of the rear ends of the two pull arms of the tool are tightly attached to the inner wall of the stirrup at the corresponding position under the action of the pressure spring. Then the stay cord is dragged to the level, moves to the other end from roof beam body one end until this instrument, draws the hair nail under two draw arms in this process and draws a row of row's slot with roof beam body width simultaneously, still can guarantee to draw the hair degree of depth when guaranteeing the slot continuity, guarantees the quality of drawing the hair of whole beam surface promptly.

In summary, the compression spring of the tool has a compression amount which can be changed along with the change of the inner hollow size of the stirrup, and the napping nails can be installed at intervals according to the inner hollow size of the stirrup, so the tool can be suitable for napping beam surfaces with different widths at one time. The galling nail and the draw arm are detachably connected, so that the density of the galling nail can be adjusted according to the beam width, and galling requirements of different beam widths are met. The operator pulls the stay cord at roof beam body one end, and easy operation improves work efficiency greatly when guaranteeing the quality of napping.

Claims (8)

1. A napping tool for a precast beam surface of a superposed beam is characterized in that: it includes single arm-drag, pressure spring, napping nail and stay cord, and the single arm-drag has two, and their one end can open and shut through the round pin axle and articulate, and the pressure spring is connected between two single arm-drag with pre-compaction state, and the downside of two single arm-drag can be dismantled along length direction respectively and be connected with one row of napping nail, and the stay cord is connected and is drawn the napping instrument and move along the roof beam face in the hinged end of single arm-drag.

2. A galling tool for precast beam faces of composite beams according to claim 1, characterized in that: the front end section of the bottom surface of the pull arm is an upper inclined surface, the rear part of the front end section is a horizontal plane, and a row of threaded holes are uniformly distributed in the horizontal plane along the length direction.

3. A galling tool for precast beam faces of composite beams according to claim 2, characterized in that: the front end section of the bottom surface of the pull arm inclines upwards by 15-20 degrees.

4. A galling tool for precast beam faces of composite beams according to claim 2, characterized in that: the napping nail comprises a napping section and a connecting section at the top of the napping section, and the connecting section is provided with an external thread matched with the threaded hole.

5. A galling tool for precast beam faces of composite beams according to claim 4, characterized in that: the distance between adjacent napping nails on the same draw arm is 20-30mm larger than the diameter of the beam precast aggregate.

6. A galling tool for precast beam faces of composite beams according to claim 4, characterized in that: the height of the napping section of the napping nail is not less than 6 mm.

7. A galling tool for precast beam faces of composite beams according to claim 2, characterized in that: a groove is formed in the center face of the front end of one of the pull arms in the thickness direction, pin shaft mounting holes are symmetrically formed in the entities on the two sides of the groove, a flat plate matched with the groove is arranged at the front end of the other pull arm, and the flat plate is provided with the pin shaft mounting holes; when the two pull arms are assembled, the flat plate is inserted into the groove and then is hinged through the pin shaft.

8. The galling tool for a precast beam face of a composite beam of claim 7, wherein: the two ends of the pin shaft are symmetrically connected with the lug plates with the connecting holes, and the pull rope penetrates through the connecting holes.

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