CN106976156B

CN106976156B - Tensioning plate assembly of concrete precast pile mould

Info

Publication number: CN106976156B
Application number: CN201610031685.5A
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-18
Filing date: 2016-01-18
Publication date: 2022-09-09
Anticipated expiration: 2036-01-18
Also published as: CN106976156A

Abstract

The invention relates to a tensioning plate component of a concrete precast pile die, which comprises a bottom plate, wherein a plurality of tensioning screw holes are arranged on the bottom plate, a tensioning hole is arranged in the middle of the bottom plate, the aperture of the tensioning hole is gradually reduced from an inlet end to an outlet end of the tensioning hole, a tensioning nut is arranged in the tensioning hole, the tensioning nut comprises a flat end extending out of the outlet end and an end part clamped and fixed in the tensioning hole, the diameter of the end part is larger than the aperture of the outlet end, the inlet end of the tensioning hole is also provided with a cover plate covering the tensioning nut, the end part of the tensioning nut is clamped and fixed in the tensioning hole, the tensioning nut fixes a tensioning screw rod, and as the tensioning nut can be rotated for adjusting an angle in the tensioning hole, if the angle of the tensioning screw rod is not opposite during tensioning, the tensioning nut can be rotated to a central position, so that the tensioning force is ensured to act on the center of the tensioning plate, the tensioning plate can not incline, and the inclination of the pile face is avoided.

Description

Tensioning plate assembly of concrete precast pile mould

Technical Field

The invention relates to a tensioning plate component of a concrete precast pile mould, and relates to the field of concrete pile manufacturing.

Background

At present, prestressed concrete members, such as pipe piles, square piles and the like, are important pile foundation materials and are widely applied to foundation engineering of various buildings and constructions, such as high-rise buildings, public buildings, general industrial and civil buildings, ports, docks, highways, bridges and other fields.

When the concrete is used for pouring the pile, a very important process, namely a tensioning process, is required. The Chinese invention patent No. CN 104989106A, the name of which is "full prestressed tension plate suite", discloses a full prestressed tension plate suite, which comprises a tension plate, wherein the tension plate is provided with vertical reinforcing ribs, horizontal reinforcing ribs, inclined reinforcing ribs, screw holes and through holes, the screw holes are arranged at the center of the tension plate, the four sides of the tension plate are provided with the through holes at equal intervals, and steps are arranged in the through holes; all be equipped with perpendicular strengthening rib and horizontal strengthening rib around the through-hole, be equipped with oblique strengthening rib between screw and perpendicular strengthening rib, the horizontal strengthening rib, all be equipped with the current stretch-draw external member of guide pin bushing in every through-hole and have following not enough: 1. the tension plate is worn at the part connected with the prestressed main rib due to long-term tension stress, and if the tension plate is replaced in time, the production cost of the pile body is greatly increased; if not replaced, the prestress strength of the pile body can be influenced; 2. the tensile strength of the tensioning plate and the tensioning tail plate is insufficient, the tensioning plate and the tensioning tail plate are easy to deform and scrap under pressure, and the end face of the pile is directly inclined if the tensioning plate and the tensioning tail plate are not replaced in time; 3. during the tensioning process, the center of the pile is easy to deviate, so that the tensioning plate is inclined, and the pile surface is inclined.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the problems, the tensioning plate component of the concrete precast pile mould is more stable and durable.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a stretch-draw board subassembly of precast concrete pile mould, includes the bottom plate, be provided with a plurality of stretch-draw screw holes on the bottom plate, be provided with the stretch-draw hole in the middle of the bottom plate, the aperture in stretch-draw hole reduces from its entry end to exit end gradually, the downthehole stretch-draw nut that is provided with of stretch-draw, stretch-draw nut includes the follow flat end and the card that the exit end stretches out are solid the downthehole tip of stretch-draw, end diameter is greater than the exit end aperture, the entry end in stretch-draw hole still is provided with the cover stretch-draw nut's apron.

Preferably, the tensioning holes comprise a flat hole arranged at the outlet end and a semi-spherical hole or a conical hole arranged at the inlet end thereof.

Preferably, the end of the tension nut is hemispherical or tapered.

Preferably, the end of the tensioning nut is tapered.

Preferably, the inner hole of the flat end of the tensioning nut is a flat hole, the inner hole of the end part of the tensioning nut is a tapered hole, and two corresponding gaps are arranged on the outer edge of the tapered hole.

Preferably, a clamping strip corresponding to the notch is arranged on one side of the cover plate, a groove is arranged on the opposite side of the cover plate, an edge step clamped at the inlet end of the tensioning hole is further arranged on the edge of the cover plate, and a butting step corresponding to the edge step is arranged at the inlet end of the tensioning hole.

Preferably, the edge of the bottom plate is also provided with a horizontal plate perpendicular to the bottom plate.

Preferably, one end of the horizontal plate is flush with one side of the inlet end of the bottom plate, and the other end of the horizontal plate extends outwards.

Preferably, the cross section of the bottom plate is circular, square or polygonal, and a plurality of reinforcing ribs are arranged on the bottom plate on one side of the outlet end of the tensioning hole.

Preferably, a screw nest is further arranged in the tensioning screw hole.

The beneficial effects of the invention are: the end part of the tensioning nut is clamped in the tensioning hole, the tensioning nut fixes the tensioning screw rod, the tensioning nut can rotate to the central position if the tensioning screw rod is not in right angle during tensioning due to the fact that the tensioning nut can rotate in the tensioning hole in a proper amount to adjust the angle, and the tensioning nut can rotate to the central position to ensure that the tensioning force acts on the center of the tensioning plate, so that the tensioning plate cannot be inclined, and the inclination of a pile surface is avoided.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a sectional view of a tension plate assembly of a concrete precast pile mold according to the present invention;

FIG. 2 is a front view of one embodiment of the base plate of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a rear view of one embodiment of the base plate of the present invention;

FIG. 5 is a front view of another embodiment of the base plate of the present invention;

FIG. 6 is a front view of another embodiment of the base plate of the present invention;

FIG. 7 is a cross-sectional view of a tension nut of the present invention;

FIG. 8 is a front view of a tension nut of the present invention.

The labels in the figure are: 1-bottom plate, 2-tensioning nut, 3-cover plate, 4-screw nesting, 5-horizontal plate, 11-tensioning screw hole, 12-tensioning hole, 13-interference step, 14-reinforcing rib, 121-outlet end, 122-inlet end, 21-straight end, 22-end, 23-straight hole, 24-conical hole and 25-notch.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams each illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.

Example 1

As shown in fig. 1, a tensioning plate assembly of a concrete precast pile mould according to the present invention includes a bottom plate 1, a plurality of tensioning screw holes 11 are provided on the bottom plate 1, the tensioning screw holes 11 are used for installing tensioning screws, the specific number is set according to the requirement, a tensioning hole 12 is provided in the middle of the bottom plate 1, the aperture of the tensioning hole 12 is gradually reduced from an inlet end 122 to an outlet end 121 thereof, a tensioning nut 2 is provided in the tensioning hole 12, the tensioning nut 2 includes a flat end 21 extending from the outlet end 121 and an end 22 fastened in the tensioning hole 12, the diameter of the end 22 is larger than the aperture of the outlet end 121, in the present invention, the end 22 of the tensioning nut 2 is fastened in the tensioning hole 12, the tensioning nut 2 fixes a tensioning screw rod, since the tensioning nut 2 can rotate at a proper angle in the tensioning hole 12, if the angle is not right when tensile lead screw is tensile, tensioning nut 2 can rotate to central point and put, guarantees that tensile power acts on the center of tensioning plate, makes tensioning plate can not incline, avoids causing the pile face slope, the entry end 122 of tensioning hole 12 still is provided with the cover tensioning nut 2's apron 3, apron 3 passes through the bolt fastening in this embodiment the entry end 122 of the tensioning hole 12 of bottom plate 1 prevents that tensioning nut 2 from droing from entry end 122.

In a preferred embodiment, as shown in fig. 2, 3 and 4, the tensioning hole 12 preferably comprises a semi-spherical hole provided at the inlet end 122 and a flat hole 23 provided at the outlet end 121, the end 22 of the tensioning nut 2 is preferably semi-spherical, as shown in fig. 7, the end 22 and the inlet end 122 are arranged in a corresponding semi-spherical shape, because the spherical shape is more convenient for rotation and has less friction, and most preferably, the tensioning hole 12 further comprises a tapered hole 24 provided at the inlet end 122 and a flat hole 23 provided at the outlet end 121, and the corresponding end 22 of the tensioning nut 2 is arranged in a tapered shape.

In a preferred embodiment, the end 22 of the tension nut 2 may also be tapered, and the corresponding inlet end 122 of the tension hole 12 may be tapered, which may also be rotationally adjustable.

In a preferred embodiment, the inner hole of the straight end 21 of the tension nut 2 is a straight hole 23, the inner hole of the end 22 thereof is a tapered hole 24, the tension nut 2 is used for fixedly mounting a tension screw rod, two corresponding notches 25 are provided on the outer edge of the tapered hole 24, as shown in fig. 8, one side of the cover plate 3 is provided with a clamping strip corresponding to the notch 25, the cover plate 3 is fixedly mounted on the base plate 1, the clamping strip can be clamped on the notch 25 of the tension nut 2 to prevent the tension nut from rotating in a large angle, the opposite side is provided with a groove, the groove on the cover plate 3 is used for forming a protruding part on a concrete pile, the protruding part corresponds to a groove on the previous concrete pile to achieve center butt joint, the edge of the cover plate 3 is further provided with an edge step clamped on the inlet end 122 of the tension hole 12, the inlet end 122 of the tension hole 12 is provided with a butting step 13 corresponding to the edge step, the edge step and the interference step 13 interfere with each other to position the cover plate 3 in the tensioning hole 12.

In a preferred embodiment, the edge of the bottom plate 1 is further provided with a horizontal plate 5 perpendicular to the bottom plate 1, the horizontal plate 5 surrounds the edge of the bottom plate 1 for one circle in the present embodiment, the horizontal plate 5 is used for keeping the bottom plate 1 horizontal, and the length thereof can be set as required.

In a preferred embodiment, one end of the horizontal plate 5 is preferably flush with the side of the inlet end 122 of the bottom plate 1, and the other end of the horizontal plate 5 extends outward.

In a preferred embodiment, the cross section of the bottom plate 1 may be circular, square or polygonal, but is not limited thereto, and may be configured according to the shape of the concrete pile to be manufactured, for example, as shown in fig. 5, an example of a circular bottom plate 1 is provided, and fig. 6 is an example of a polygonal bottom plate 1, wherein a plurality of reinforcing ribs 14 are provided on the bottom plate 1 at the outlet end 121 side of the tension hole 12, and the number and the shape of the reinforcing ribs 14 are configured according to the size and the shape of the plate, and are not particularly limited.

In a preferred embodiment, a screw nest 4 is further arranged in the tensioning screw hole 11, and the screw nest 4 can prevent the tensioning screw from wearing the tensioning plate, because the replacement cost of the tensioning plate is high, and the replacement cost of the screw nest 4 after long-term use is low, so that the production cost is reduced.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A tensioning plate assembly of a concrete precast pile die is characterized by comprising a bottom plate, wherein a plurality of tensioning screw holes are formed in the bottom plate, a tensioning hole is formed in the middle of the bottom plate, the aperture of the tensioning hole is gradually reduced from an inlet end to an outlet end of the tensioning hole, a tensioning nut is arranged in the tensioning hole and comprises a flat end extending out of the outlet end and an end part clamped and fixed in the tensioning hole, the diameter of the end part is larger than the aperture of the outlet end, and a cover plate covering the tensioning nut is further arranged at the inlet end of the tensioning hole;

the tensioning holes comprise flat holes arranged at the outlet end and semi-spherical or conical holes arranged at the inlet end of the tensioning holes, and the end parts of the tensioning nuts are semi-spherical or conical;

the inner hole of the flat end of the tensioning nut is a flat hole, the inner hole of the end of the tensioning nut is a conical hole, two corresponding openings are formed in the outer edge of the conical hole, and clamping strips corresponding to the openings are arranged on one side of the cover plate.

2. A tension plate assembly of a concrete precast pile mold according to claim 1, wherein an end of the tension nut is tapered.

3. A tension plate assembly of a precast concrete pile mold according to any one of claims 1 to 2, wherein the cover plate is provided at opposite sides thereof with grooves, the edge of the cover plate is further provided with edge steps fastened to the entry ends of the tension holes, and the entry ends of the tension holes are provided with interference steps corresponding to the edge steps.

4. A tension plate assembly of a precast concrete pile mold according to claim 3, wherein the edge of the bottom plate is further provided with a horizontal plate perpendicular to the bottom plate.

5. A tension plate assembly of a concrete precast pile mold according to claim 4, wherein one end of the horizontal plate is flush with the side of the entrance end of the bottom plate, and the other end of the horizontal plate extends outward.

6. A tension plate assembly of a precast concrete pile mold according to claim 1, wherein the bottom plate has a cross section of a circular, square or polygonal shape, and a plurality of reinforcing ribs are provided on the bottom plate at an outlet end side of the tension hole.

7. A tension plate assembly of a concrete precast pile mold according to claim 1, wherein a screw nest is further provided in the tension screw hole.