CN210100331U - Tensioning device, tensioning plate assembly and tensioning plate - Google Patents

Abstract

The utility model discloses a tensioning device, a tensioning plate component and a tensioning plate, wherein the tensioning plate comprises a plate body, a first plate surface of the plate body is used for contacting with a concrete pile, and at least the lower end part of a second plate surface opposite to the first plate surface is provided with a supporting component; in a use state, the supporting component arranged at the lower end part is attached to the bottom wall of the cavity of the mold so as to support the first plate surface to be vertical to the bottom wall. By adopting the structure, the support component can enlarge and thicken the friction contact area between the tension plate and the bottom wall of the die cavity, and can increase the reverse bending moment of friction force to resist the overturning bending moment in the tension direction, so as to ensure that the first plate surface of the plate body is vertical to the bottom wall as far as possible, and improve or overcome the problem of the inclination of the pile end surface of the formed concrete pile; when the overturning trend is generated, the supporting part can transmit the anti-overturning supporting force to the plate body, so that the overturning of the plate body can be overcome to a certain degree; the supporting component can improve the strength of the plate body and prolong the service life of the plate body.

Description

Tensioning device, tensioning plate assembly and tensioning plate

Technical Field

The utility model relates to a manufacturing equipment technical field of precast concrete pile, concretely relates to tensioning equipment, stretch-draw board subassembly and stretch-draw board.

Background

In order to increase the bending resistance, shearing resistance and tensile strength of the precast concrete square pile, a tensioning device is required to perform prestress tensioning on a reinforcement cage of the precast concrete square pile.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a tensioning device in the prior art.

As shown in fig. 1, the tensioning device includes two retaining walls 01 disposed opposite to each other and a mold 02 located between the two retaining walls 01, the mold 02 is provided with a mold cavity for pouring concrete, two pulling plates 03 are disposed in the mold cavity, a reinforcement cage formed by a plurality of reinforcements 04 is connected between the two pulling plates 03, the two pulling plates 03 are respectively connected to the retaining walls 01 through screws 05, the two pulling plates 03 may be movable plates, one of the two pulling plates may be a movable plate, the other one may be a fixed plate, the screws 05 connected to the fixed plate and the retaining walls 01 may be fixedly connected, the screws 05 connected to the movable plates may also be connected to an external driving device, and the driving device may manipulate the movable plates 03 to move through the screws 05, so as to tension the reinforcements 04.

Taking the left tensioning plate 03 as an example, in the tensioning process, the tensioning plate 03 is subjected to the tensioning force of the screw rod 05, the anti-deformation reaction force of the steel bar 04 and the friction force of the inner wall of the die cavity, when the three forces are eccentric, the central axes of the two tensioning plates 03 on the left side and the right side are not collinear, so that the tensioning plate 03 inclines, the pile end face of the concrete square pile attached to one plate face of the tensioning plate 03 is inclined, once the pile end face is inclined, a gap is left between the adjacent end faces of the two piles during pile splicing, the small strain detection is unqualified, the pile body is not straight after being lengthened, the pile body is in a broken line shape, and the like, and the normal use of the concrete square pile is seriously affected.

Therefore, how to provide a solution to improve or overcome the above-mentioned drawbacks still remains a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tensioning equipment, stretch-draw board subassembly and stretch-draw board, wherein, this stretch-draw board can improve or overcome the stake terminal surface slope of the concrete pile that forms.

In order to solve the technical problem, the utility model provides a tension plate, which comprises a plate body, wherein a first plate surface of the plate body is used for contacting with a concrete pile, and a supporting part is arranged at the lower end of a second plate surface of the plate body, which is at least back to the concrete pile; in a use state, the supporting component arranged at the lower end part is attached to the bottom wall of the cavity of the mold so as to support the first plate surface to be vertical to the bottom wall.

By adopting the structure, the supporting component is equivalent to locally thickening and widening the contact part of the plate body and the bottom wall of the die cavity, so that the friction contact area of the tensioning plate and the inner wall of the die cavity is increased, the reverse bending moment provided by the friction force can be increased to resist the overturning bending moment in the tensioning direction, the first plate surface of the plate body is ensured to be vertical to the bottom wall all the time as far as possible, and the problem of the inclination of the pile end surface of the formed concrete pile and a series of problems caused by the inclination of the pile end surface can be improved or overcome.

In addition, the supporting component is contacted with the bottom wall, when the plate body has a tendency of overturning, the supporting component can transmit an anti-overturning supporting force to the plate body, and the overturning of the plate body can be overcome to a certain extent; simultaneously, the supporting component can also strengthen the plate body to improve the strength of the plate body, alleviate the deformation degree that the plate body produced when receiving stretch-draw, be favorable to prolonging the life of plate body.

Optionally, at least one of the two lateral side ends of the second plate surface is also provided with the support member; in a use state, the supporting part arranged on the side end part is attached to the side wall of the corresponding side of the die cavity so as to support the first plate surface to be vertical to the two side walls.

Optionally, at least one of the lateral side end surfaces of the plate body is arranged to be inclined outwards at a predetermined angle from bottom to top, and the predetermined angle is consistent with the draft angle of the mold cavity.

Optionally, at least a portion of the bottom surface or at least one of the ribs or at least one of the vertices of the support member disposed at the lower end portion is coplanar with the bottom surface of the plate body, and at least a portion of the outer side surface or at least one of the ribs or at least one of the vertices of the support member disposed at the lateral end portion is coplanar with the lateral end surface of the corresponding side of the plate body.

Alternatively, the number of the support members provided at the lower end portion is one, and the number of the support members provided at both the side end portions is also one; the plate body is characterized by also comprising a plurality of reinforcing components which are used for connecting the supporting components and the plate body.

Alternatively, the three support members provided at the lower end portion and at both the side end portions are connected to each other; or, the three support members provided at the lower end portion and at the two side end portions may be of an integrated structure.

Optionally, the number of the supporting members provided at the lower end portion is plural, and the supporting members at the lower end portion are arranged at intervals in the transverse direction; the supporting members provided at both the side end portions are plural, and the supporting members of the side end portions on the same side are arranged at intervals in the vertical direction.

The utility model also provides a stretch-draw board subassembly, including stretch-draw board and stretch-draw pole, stretch-draw pole with stretch-draw board's plate body links to each other, stretch-draw board is foretell stretch-draw board.

Since the above-mentioned tensioning plate has the technical effects, the tensioning plate assembly having the tensioning plate also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Optionally, the tension rod is a screw rod, and the tension rod further comprises a tightening part, the plate body is provided with a first threaded hole, and the tightening part is provided with a second threaded hole; the tightening component is fixed on the second plate surface, or the tightening component and the plate body are of an integrated structure and are positioned on the second plate surface, and the screw rod is screwed in the second threaded hole and the first threaded hole; or the screw rod is screwed in the first threaded hole, and the tightening part is screwed in the screw rod and is attached to the second plate surface.

The utility model also provides a tensioning equipment, including stretch-draw barricade, mould and stretch-draw board subassembly, the mould is equipped with the die cavity, the stretch-draw board subassembly is foretell stretch-draw board subassembly, the plate body is located in the die cavity.

Since the above-mentioned tensioning plate assembly has the above technical effects, the tensioning device having the tensioning plate assembly also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Drawings

FIG. 1 is a schematic diagram of a prior art tensioning device in one embodiment;

fig. 2 is a schematic structural diagram of an embodiment of a tension plate provided in the present invention;

FIG. 3 is a side view of FIG. 2;

fig. 4 is a schematic structural diagram of another embodiment of a tension plate provided in the present invention;

fig. 5-a and 5-b are schematic structural views of two other embodiments of the tension plate provided by the present invention;

fig. 6 is a schematic structural view of a plate body of the tension plate provided by the present invention;

FIG. 7 is a schematic diagram of an embodiment of a tension plate assembly according to the present invention;

fig. 8 is a schematic structural diagram of a specific embodiment of the tensioning device provided by the present invention.

The reference numerals in fig. 1 are explained as follows:

01 retaining wall, 02 die, 03 stretching plate, 04 reinforcing steel bar and 05 screw rod.

The reference numerals in fig. 2-8 are illustrated as follows:

1, a plate body, a 1a first plate surface, a 1b second plate surface, a 1c side end surface, 11 first threaded holes and 12 through holes;

2 a support member;

3 mold, 31 bottom wall;

4 a reinforcing member;

5, a screw rod;

6 and tightening the components.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The terms "first", "second", and the like, as used herein are used for convenience only to describe two or more structures or components that are the same or similar in structure, and do not denote any particular limitation on the order.

Here, the extending direction of a cavity provided in the mold is taken as a longitudinal direction, a direction perpendicular to the longitudinal direction in a horizontal plane is taken as a transverse direction, and a direction perpendicular to the horizontal plane is taken as an up-down direction, wherein a direction close to the ground is taken as a down direction, and a direction far from the ground is taken as an up direction; in any component, the end (wall) located relatively downward may be referred to as a lower end (lower wall) and a bottom end (bottom wall), and the ends (walls) located in the lateral direction may be referred to as side ends (walls).

Please refer to fig. 2-8, fig. 2 is a schematic structural diagram of a specific embodiment of the tensioning plate provided by the present invention, fig. 3 is a side view of fig. 2, fig. 4 is a schematic structural diagram of another specific embodiment of the tensioning plate provided by the present invention, fig. 5 is a schematic structural diagram of another two specific embodiments of the tensioning plate provided by the present invention, fig. 6 is a schematic structural diagram of a plate body of the tensioning plate provided by the present invention, fig. 7 is a schematic structural diagram of a specific embodiment of the tensioning plate assembly provided by the present invention, fig. 8 is a schematic structural diagram of a specific embodiment of the tensioning device provided by the present invention.

Example one

As shown in fig. 2 and 3, the present embodiment provides a tension plate, which includes a plate body 1, where the plate body 1 has a first plate surface 1a and a second plate surface 1b, where the first plate surface 1a is a contact surface of a concrete pile (square pile or other type of pile) and is used for contacting with the concrete pile during casting, and the second plate surface 1b is a plate surface facing away from the concrete pile; different from the prior art, the lower end part of the second plate surface 1b is provided with the supporting member 2, and in the use state, the supporting member 2 arranged at the lower end part is attached to the bottom wall 31 of the cavity of the mold 3 so as to support the first plate surface 1a to be vertical to the bottom wall 31.

By adopting the structure, the supporting part 2 is equivalent to locally thickening and widening the contact part of the plate body 1 and the die cavity bottom wall 31, so that the friction contact area between the tensioning plate and the inner wall of the die cavity is increased, the reverse bending moment provided by the friction force can be increased to resist the overturning bending moment in the tensioning direction, the first plate surface 1a of the plate body 1 is ensured to be vertical to the bottom wall 31 all the time as far as possible, and the pile end face inclination of the formed concrete pile and a series of problems of concrete pile quality defect, pile connecting defect and the like caused by the pile end face inclination can be improved or overcome.

Furthermore, since the supporting member 2 is in contact with the bottom wall 31, when the plate body 1 tends to overturn, the supporting member 2 can transmit an overturn-resisting supporting force to the plate body 1, which can also improve or overcome the overturn of the plate body 1 to a certain extent; simultaneously, the supporting component 2 can also strengthen the plate body 1 to improve the strength of the plate body 1, reduce the deformation degree of the plate body 1 when being stretched and be beneficial to prolonging the service life of the plate body 1.

Further, at least one of the two lateral side ends of the second plate surface 1b may also be provided with a support member 2, and in a use state, the support member 2 provided at the side end is attached to the side wall of the corresponding side of the mold cavity to support the first plate surface 1a to be perpendicular to the two side walls, and further, the stability of the tensioning plate is improved, so that the perpendicularity of the first plate surface 1a of the tensioning plate to the bottom wall 31 of the mold cavity can be improved or ensured to a greater extent. The "side wall on the corresponding side" herein means the side wall on the same side as the support member 2 provided at the side end portion.

Herein, referring to the stretching movement of the stretching plate, the direction of the stretching movement is the front direction, which is reflected in fig. 8, the stretching plate on the left side in fig. 8 is a movable plate, and the left direction can be defined as the front direction and the right direction can be defined as the rear direction, it can be understood that the front and rear directions are the longitudinal directions described above.

On the basis, the aforementioned support members 2 are provided at the lower end of the second plate surface 1b mainly to improve or overcome the problem that the top of the plate body 1 topples forward (as shown in fig. 1 of the background art), while the support members 2 are provided at the two lateral side ends of the second plate surface 1b, so that the frictional contact area between the lateral side portions of the tensioning plate and the side walls of the mold cavity can be increased to improve or overcome the problem that the lateral side portions of the plate body 1 topples forward or backward, the principle of which is similar to that of the support members 2 at the lower end of the second plate surface 1b, and will not be described repeatedly herein.

It should be understood that the cavity of the mold 3 will usually have a certain draft angle, i.e. its two sidewalls are not perpendicular to the bottom wall 31, but gradually incline outwards from bottom to top to form a gradually expanding slot, thereby facilitating draft; the angle of inclination of the two side walls from the vertical state to the outside is the draft angle, and the value is usually between 0.5 and 2 degrees, which is particularly related to the actual situation. Herein, the outer is the position laterally away from the center of the mold cavity.

In order to better prevent the pile end face of the formed concrete pile from inclining, at least one of the two lateral side end faces 1c of the plate body 1 can be inclined outwards from bottom to top according to a predetermined angle, and taking fig. 6 as a view angle, both the two lateral side end faces 1c of the plate body 1 can be inclined planes as above, that is, the plate body 1 can be arranged into an inverted isosceles trapezoid shape (when only one side end face 1c is an inclined plane, the plate body 1 can be an inverted right trapezoid shape), and the predetermined angle can be consistent with the draft angle of the mold cavity, and when in use, the two lateral side end faces 1c of the plate body 1 can be tightly attached to the two side walls of the mold cavity. So, plate body 1 and die cavity are wide structure narrow down from top to bottom, because the restriction of size, the unable downward sloping of the upper portion of plate body 1 broad to the narrower lower part space of die cavity can restrict forward or backward toppling of top of plate body 1 to can guarantee the perpendicular of first face 1a and die cavity diapire 31 of plate body 1 by bigger degree.

In the first embodiment, as shown in fig. 2 and 3, the number of the support members 2 provided at the lower end portion and the side end portion of the second plate surface 1b may be one, and in this case, the lateral dimension of the support member 2 provided at the lower end portion may be approximately equal to the lateral dimension of the bottom surface of the plate body 1, and the dimension of the support member 2 provided at the side end portion in the vertical direction may be approximately equal to the dimension of the side end surface 1c of the plate body 1 in the vertical direction, so as to provide a larger supporting force to the bottom surface and the side end surface 1c of the plate body 1.

The supporting members 2 at the three positions may be connected with each other or independent from each other, and in the embodiment of the present invention, the scheme of interconnection is preferably adopted, so that the supporting members 2 can also support each other to provide greater strength.

Further, the three supporting members 2 may be formed in an integrated structure, in which case, the entire supporting member 2 may be formed in an "ㄩ" shape, and then, the integrated supporting member 2 may be fixed to the panel body 1 by welding or the like, so that the connecting process between the supporting members 2 may be omitted to improve the installation efficiency.

Furthermore, the supporting parts 2 and the plate body 1 at the three positions can be integrally arranged to form an integrated structure, so that the verticality deviation generated in the installation process can be avoided, the connection installation process of the supporting parts 2 and the plate body 1 can be omitted, and the installation efficiency can be improved to a greater extent.

In this scheme, because the extension length of support component 2 is longer, can also set up a plurality of strengthening parts 4, this strengthening part 4 specifically can be strengthening rib or reinforcing plate etc. for connecting support component 2, plate body 1, can strengthen support component 2, plate body 1, in order to guarantee the joint strength of support component 2 and plate body 1, and then can improve the support location effect of support component 2 to plate body 1.

In the second embodiment, as shown in fig. 4, the number of the supporting members 2 provided at the lower end portion of the second plate surface 1b may be plural, and the supporting members 2 located at the lower end portion may be provided at intervals in the lateral direction, and each supporting member 2 may be attached to the bottom wall 31 of the cavity in use; the number of the supporting members 2 arranged at the end portions of the two sides can also be multiple, and the supporting members 2 on the same side can be arranged at intervals along the vertical direction, and when in use, the supporting members 2 on the same side can also be attached to the side walls of the corresponding sides of the mold cavity.

The dimensions of the support members 2 in the second solution can be smaller than in the first solution, without extending a longer distance in the transverse or up-down direction, and the resulting tension plate will be lighter in weight.

Specifically, referring to the embodiment of the drawings, the first scheme can be seen in fig. 2 and 3, the support members 2 are flat plates with large sizes and need to be used in cooperation with the triangular reinforcing members 4, the second scheme can be seen in fig. 4, each support member 2 only needs to be a block-shaped and plate-shaped member with small sizes (actually, the reinforcing members 4 in the first scheme can be directly adopted), the weight of the tensioning plate can be greatly reduced, and the labor intensity of operators can be reduced.

All or part of the bottom surface (as shown in fig. 5-b) of the support member 2 provided at the lower end portion may be coplanar with the bottom surface of the plate body 1, and all or part of the outer side surface of the support member 2 provided at the side end portion may be coplanar with the side end surface 1c of the corresponding side of the plate body 1, so as to overcome the overturning of the plate body 1 by increasing the frictional contact area and providing the supporting force; alternatively, at least one edge (fig. 5-a) or at least one vertex of the support member 2 provided at the lower end portion may be coplanar with the bottom surface of the plate body 1, and at least one edge or at least one vertex provided at the side end portion may be coplanar with the side end surface 1c of the corresponding side of the plate body 1, in which case the support member 2 has a limited increase in the frictional contact area, mainly by means of providing a supporting force to overcome the overturning of the plate body 1. Both of these two ways have an effect on improving or overcoming the overturn of the plate body 1, and in the specific implementation, one skilled in the art can use one or a combination of the two ways according to the actual needs.

Example two

The utility model also provides a stretch-draw board subassembly, including stretch-draw board and stretch-draw pole, stretch-draw pole links to each other with the plate body of stretch-draw board, and this stretch-draw board is the stretch-draw board in aforementioned embodiment one promptly.

Since the tension plate in the first embodiment has the above technical effects, the tension plate assembly having the tension plate also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Further, as shown in fig. 7, the tension rod may be a screw 5, and further includes a tightening component 6, the plate body 1 may be provided with a first threaded hole 11 and a plurality of through holes 12, and each through hole 12 is used for connecting a bolt and a nut at an upset of a steel bar, so that each steel bar in the steel bar cage is kept at a preset position; the tightening member 6 may be provided with a second screw hole, and the tightening member 6 may be fixed to the second plate surface 1b by welding or the like in advance, or the tightening member 6 and the plate body 1 may be formed as an integral structure, in which case the first screw hole 11 and the second screw hole are formed together. When mounting, the screw 5 can be screwed into the second threaded hole, the first threaded hole 11, to connect with the plate body 1 of the tension plate.

By adopting the scheme, the tightening component 6 equivalently prolongs the length of the connecting part of the screw rod 5 and the plate body 1, can avoid the bending deformation of the screw rod 5 to a greater extent, and the central deviation caused by the thread clearance at the connecting part of the screw rod 5 and the plate body 1, is favorable for ensuring the coaxial arrangement of the screw rod 5 and the plate body 1, and can improve the overturn prevention effect of the plate body 1 through the concentric tension force with the first threaded hole 11 and the second threaded hole.

The tightening element 6 may also be not fixed to the plate body 1, but may be engaged with the plate body 1 only by means of a threaded engagement with the threaded rod 5, which is also an option in the specific implementation. For example, the fastening member 6 may be a conventional nut, except that the fastening member 6 is formed integrally with the plate body 1.

EXAMPLE III

The utility model also provides a tensioning equipment, including stretch-draw barricade, mould and stretch-draw board subassembly, be equipped with the die cavity in the mould, this stretch-draw board subassembly is the stretch-draw board subassembly in aforementioned embodiment two promptly, and wherein, the plate body is located the die cavity.

Since the tensioning plate assembly in the second embodiment has the above technical effects, the tensioning device having the tensioning plate assembly also has similar technical effects, and therefore, the details are not repeated herein.

It should be noted that the connecting structure of the tensioning plate assembly and the tensioned retaining wall in the tensioning device and other structures not described in the present application can refer to the prior art and will not be described in detail herein.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A tension plate comprises a plate body (1), and is characterized in that a first plate surface (1a) of the plate body (1) is used for being in contact with a concrete pile, and a supporting component (2) is arranged at the lower end part of a second plate surface (1b) of the plate body (1) at least back to the concrete pile;

in a use state, the support member (2) provided at the lower end portion is attached to a bottom wall (31) of a cavity of a mold (3) to support the first plate surface (1a) to be perpendicular to the bottom wall (31).

2. A tensioning plate according to claim 1, characterized in that at least one of the two lateral side ends of the second plate surface (1b) is also provided with said supporting member (2);

in a use state, the supporting part (2) arranged at the side end part is attached to the side wall of the corresponding side of the cavity so as to support the first plate surface (1a) to be vertical to the two side walls.

3. A tension plate as claimed in claim 2, wherein at least one of the lateral side end surfaces (1c) of the plate body (1) is arranged to be inclined outward at a predetermined angle from bottom to top, and the predetermined angle corresponds to a draft angle of the die cavity.

4. A tensioning plate according to claim 3, characterized in that at least part of the bottom surface or at least one edge or at least one vertex of the supporting element (2) provided at the lower end is coplanar with the bottom surface of the plate body (1), and at least part of the outer side surface or at least one edge or at least one vertex of the supporting element (2) provided at the lateral end is coplanar with the lateral end surface (1c) of the corresponding side of the plate body (1).

5. A tension plate according to claim 4, characterized in that the number of said support members (2) provided at said lower end portion is one, and the number of said support members (2) provided at both said side end portions is also one;

the plate body is characterized by further comprising a plurality of reinforcing components (4) which are used for connecting the supporting components (2) and the plate body (1).

6. A tensioning plate according to claim 5, characterized in that the three support members (2) provided at the lower end and at the two side ends are mutually connected; alternatively, the first and second electrodes may be,

the three supporting parts (2) arranged at the lower end part and the two side end parts are of an integrated structure.

7. A tension plate according to claim 4, characterized in that the number of the support members (2) provided at the lower end portion is plural, and the support members (2) at the lower end portion are arranged at intervals in the lateral direction;

the number of the supporting members (2) arranged at the two side end portions is multiple, and the supporting members (2) at the side end portions on the same side are arranged at intervals in the vertical direction.

8. A tensioning plate assembly comprising a tensioning plate and a tensioning rod, said tensioning rod being connected to the plate body (1) of said tensioning plate, characterized in that said tensioning plate is a tensioning plate according to any one of claims 1 to 7.

9. A tensioning plate assembly according to claim 8, characterized in that the tensioning rod is a screw (5) and further comprises a tightening member (6), the plate body (1) is provided with a first threaded hole (11), and the tightening member (6) is provided with a second threaded hole;

the tightening component (6) is fixed on the second plate surface (1b), or the tightening component (6) and the plate body (1) are of an integrated structure and are positioned on the second plate surface (1b), and the screw rod (5) is screwed in the second threaded hole and the first threaded hole (11); alternatively, the first and second electrodes may be,

the screw rod (5) is screwed in the first threaded hole (11), and the tightening component (6) is screwed in the screw rod (5) and attached to the second plate surface (1 b).

10. A tensioning device comprising a tensioned retaining wall, a mould (3) and a tensioned panel assembly, said mould (3) being provided with a mould cavity, characterized in that said tensioned panel assembly is a tensioned panel assembly according to claim 8 or 9, said panel body (1) being located in said mould cavity.

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