Connector and tensioning device

Abstract

The present invention discloses a connector and a tensioning device, wherein the connector comprises: a base; two positioning blocks, the upper end of one positioning block is provided with a first plug-in portion, the upper end of the other positioning block is provided with a first slot, and both positioning blocks are provided with mounting holes for mounting respective corresponding tensioning rods; in the assembled state, the lower ends of the two positioning blocks are both plugged and fixed to the base, the first plug-in portion is plugged and fixed to the first slot in the up and down directions, and the two tensioning rods are coaxial. The upper and lower ends of the two positioning blocks of the connector provided by the present invention can be relatively reliably fixed, and when in use, the tensioning rods installed on the two positioning blocks are not prone to the problem of non-concentricity, which can largely overcome the inclination of the end face of the concrete pile caused by the use of the connector.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing equipment for precast concrete piles, and in particular to a tensioning device, a tensioning plate assembly and a tensioning plate. Background Art

[0002] In order to increase the bending, shear and tensile resistance of precast concrete square piles, it is necessary to use a tensioning device to prestress the force cage of the precast concrete square piles.

[0003] Please refer to Figure 1 , Figure 1 It is a structural schematic diagram of a specific implementation of a tensioning device in the prior art. Figure 2 for Figure 1 Top view of the connector. Figure 3 for Figure 2 Side view of.

[0004] like Figure 1 As shown, the tensioning device includes two retaining walls 01 arranged 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 tensioning plates 03 are arranged in the mold cavity, a stress-bearing reinforcement cage formed by a plurality of stress-bearing reinforcements 04 is connected between the two tensioning plates 03, and the two tensioning plates 03 are respectively connected to the retaining walls 01 through screws 05, the two tensioning plates 03 can both be movable plates, or one of them can be a movable plate and the other can be a fixed plate, the screw 05 connected to the fixed plate is fixedly connected to the retaining wall 01, and the screw 05 connected to the movable plate can also be connected to an external driving device, and the driving device can manipulate the movable plate 03 to move through the screw 05 to tension the stress-bearing reinforcement 04.

[0005] Since the lengths of the concrete piles to be prepared are different, when in use, there is a situation where the screw rod 05 is not long enough to be connected to the tensioning plate. For this reason, a connector 06 can be provided, which can connect two sections of the screw rod 05 to connect to the tensioning plate 03.

[0006] like Figure 2 , Figure 3 As shown, the connector 06 in the prior art includes a pile connection box 061 with an upper opening, and the pile connection box 061 is provided with slots 061a with an upward opening on two side walls in the front and rear directions, and the two screw rods 05 are connected with positioning blocks 062. The two screw rods 05 can fall from top to bottom in the slots 061a, and respectively abut against the front and rear side walls of the pile connection box 061 through the two positioning blocks 062 to complete the connection of the two screw rods 05.

[0007] However, since the screw 05 is provided with an external thread, it is actually in contact with the inner wall of the slot 061a through the largest outer diameter portion (i.e., the convex portion of the thread), and there is still a large gap between the smallest outer diameter portion (i.e., the concave portion of the thread) and the inner wall of the slot 061a, which easily leads to the situation that the two screws 05 are not concentric during the tensioning process (such as Figure 2 As shown), this will cause the force acting on the tensioning plate 03 to be not coaxial, which will cause the tensioning plate 03 to tilt, and further cause the pile end face of the concrete square pile that fits the tensioning plate 03 to tilt. Once the pile end face tilts, it will lead to a series of problems such as gaps between adjacent end faces of the two piles when connecting the piles, failure of small strain detection, and the pile body being not a straight line but a broken line after extension, which seriously affect the normal use of the concrete square piles.

[0008] Therefore, how to provide a solution to improve or overcome the above-mentioned defects is still a technical problem to be solved urgently by those skilled in the art. Summary of the invention

[0009] The object of the present invention is to provide a connector and a tensioning device, wherein the upper and lower ends of the two positioning blocks of the connector can be relatively reliably fixed. When in use, the tensioning rods installed on the two positioning blocks are not prone to the problem of eccentricity, and the inclination of the end surface of the concrete pile caused by the use of the connector can be overcome to a large extent.

[0010] In order to solve the above technical problems, the present invention provides a connector, comprising: a base; two positioning blocks, the upper end of one of the positioning blocks is provided with a first plug-in portion, the upper end of the other positioning block is provided with a first slot, and the two positioning blocks are provided with mounting holes for installing their respective corresponding tension rods; in the assembled state, the lower ends of the two positioning blocks are both plugged and fixed to the base, the first plug-in portion is plugged and fixed to the first slot in the up and down directions, and the two tension rods are coaxial.

[0011] The connector provided by the present invention has two lower end portions of the positioning blocks plugged and fixed on the base, and the upper end portions of the two positioning blocks can be plugged and fixed to each other in the up and down directions. Because the contacting working surfaces are both installation surfaces, the assembly gap can be controlled by processing technology, so that the upper and lower ends of the two positioning blocks can be assembled more reliably. During use, the two pull rods are not prone to the problem of eccentricity, thereby largely avoiding the inclination of the pile end surface of the concrete pile caused by the use of the connector, as well as a series of problems caused by the inclination of the pile end surface.

[0012] Optionally, the positioning block provided with the first plug-in portion is also provided with a second slot, and the positioning block provided with the first slot is also provided with a second plug-in portion. In the assembled state, the second plug-in portion is also plugged and fixed with the second slot in the upper and lower directions.

[0013] Optionally, the positioning block includes a main body, and the upper ends of the two main bodies are each provided with an extension section extending toward the other main body; wherein, the extension section of one body is provided with a downwardly extending lower extension section away from the end of the main body, the lower extension section is the first plug-in portion, and the second slot is formed between the lower extension section and the main body; the extension section of the other body is provided with an upwardly extending upper extension section away from the end of the main body, the upper extension section is the second plug-in portion, and the first slot is formed between the upper extension section and the main body.

[0014] Optionally, the base includes a bottom plate, and both longitudinal ends of the bottom plate are provided with upwardly extending card plates, and the two card plates and the bottom plate are combined to form an installation cavity; the lower ends of the two positioning blocks are inserted into the installation cavity, and the two positioning blocks are respectively abutted against the two card plates; the installation hole is a threaded hole, and the tension rod is a screw.

[0015] The present invention also provides a tensioning device, comprising a mold, wherein two tensioning plates are arranged in the mold cavity of the mold, and a number of tensioning bars of a concrete pile are connected between the two tensioning plates. Tensioning retaining walls are also arranged at both ends of the mold, and at least one of the tensioning retaining walls is connected to the tensioning plates adjacent thereto via a connector; the connector is the above-mentioned connector, and one of the tensioning rods of the connector is connected to the tensioning retaining wall, and the other tensioning rod is connected to the tensioning plate.

[0016] Since the above-mentioned connector already has the above-mentioned technical effects, the tensioning device having the connector should also have similar technical effects, so it will not be elaborated here.

[0017] Optionally, the tensioning plate includes a plate body, a first plate surface of the plate body being used to contact the concrete pile, a plate surface of the plate body facing the connector being the second plate surface, and a lower end portion and / or at least one lateral side end portion of the second plate surface being provided with a supporting component; in a state of use, the supporting component provided at the lower end portion is in contact with the bottom wall of the mold cavity, and is used to support the first plate surface to be perpendicular to the bottom wall, and the supporting component provided at the side end portion is in contact with the side wall of the corresponding side of the mold cavity, and is used to support the first plate surface to be perpendicular to the two side walls, and improves the stability of the tensioning plate, thereby improving or ensuring that the first plate surface of the tensioning plate is perpendicular to the bottom wall of the mold cavity.

[0018] Optionally, the two lateral end faces of the plate body are arranged to be inclined outward from bottom to top at a predetermined angle, and the predetermined angle is consistent with the draft angle of the mold cavity; at least part of the bottom surface or at least one edge or at least one vertex of the support component arranged at the lower end is coplanar with the bottom surface of the plate body, and at least part of the outer side surface or at least one edge or at least one vertex of the support component arranged at the side end is coplanar with the side end face of the corresponding side of the plate body.

[0019] Optionally, the number of the supporting components arranged at the lower end is one, and the number of the supporting components arranged at the two side ends is also one; a plurality of reinforcing components are also included for connecting the supporting components and the plate body; the three supporting components arranged at the lower end and at the two side ends are connected to each other; or, the three supporting components arranged at the lower end and at the two side ends are an integrated structure.

[0020] Optionally, the number of the supporting components arranged at the lower end is multiple, and the supporting components located at the lower end are arranged at intervals in the lateral direction; the number of the supporting components arranged at the two side ends is multiple, and the supporting components at the side ends on the same side are arranged at intervals in the up and down directions.

[0021] Optionally, the tensioning rod is a screw rod and also includes a tightening component, the plate body is provided with a first threaded hole, and the tightening component is provided with a second threaded hole; the tightening component is fixed to the second plate surface, or the tightening component and the plate body are an integrated structure and are located on the second plate surface, and the screw rod is screwed into the second threaded hole and the first threaded hole; or the screw rod is screwed into the first threaded hole, and the tightening component is screwed into the screw rod and fits with the second plate surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a specific implementation of a tensioning device in the prior art;

[0023] Figure 2 for Figure 1 A top view of the connector;

[0024] Figure 3 for Figure 2 Side view of

[0025] Figure 4 A schematic structural diagram of a specific implementation of the connector provided by the present invention;

[0026] Figure 5 for Figure 4 Exploded view of;

[0027] Figure 6 A schematic structural diagram of a specific implementation of the tensioning device provided by the present invention;

[0028] Figure 7 for Figure 6 A structural schematic diagram of a specific implementation of a central tension plate;

[0029] Figure 8 for Figure 7 Side view of

[0030] Fig. 9 for Figure 6 A schematic structural diagram of another specific implementation of the intermediate tension plate;

[0031] Fig.10 for Figure 6 Structural schematic diagrams of two other specific implementations of the intermediate tension plate;

[0032] Fig.11 for Figure 6 Schematic diagram of the structure of the plate body of the intermediate tension plate.

[0033] Figure 1-3 The reference numerals in the figures are described as follows:

[0034] 01 retaining wall, 02 mold, 03 tension plate, 04 stress reinforcement, 05 screw, 06 connector, 061 pile box, 061a slot, 062 positioning block.

[0035] Figure 4-11 The reference numerals in the figures are described as follows:

[0036] 1 plate body, 1a first plate surface, 1b second plate surface, 1c side end surface, 11 first threaded hole, 12 through hole, 13 stress rib;

[0037] 2 supporting parts;

[0038] 3 mold, 31 bottom wall;

[0039] 4. Strengthening components;

[0040] 5 screws;

[0041] 6. Tighten the parts;

[0042] 7 connector, 71 base, 711 bottom plate, 712 card plate, 713 installation cavity, 72 positioning block, 721 first plug-in portion, 722 second plug-in portion, 723 first slot, 724 second slot, 725 body, 725a thin plate portion, 725b step surface, 726 extension section, 73 tension rod;

[0043] 8 tension retaining walls, 81 lock nuts. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] The term “several” as used herein refers to an indefinite number of multiples, usually more than two; and when “several” is used to indicate the number of certain components, it does not indicate the quantitative relationship between these components.

[0046] The words "first", "second", etc. mentioned in this article are only for the convenience of describing two or more structures or components with the same or similar structures, and do not mean any special limitation on the order.

[0047] In this article, the extension direction of the mold cavity set in the mold is the longitudinal direction, the direction perpendicular to the longitudinal direction in the horizontal plane is the transverse direction, and the direction perpendicular to the horizontal plane is the up and down direction, among which the direction close to the ground is the down direction, and the direction away from the ground is the up direction; for any component, its relatively lower end (wall) can be called the lower end (lower wall) or the bottom end (bottom wall), and the two ends (walls) located in the transverse direction can be called side ends (walls).

[0048] Embodiment 1

[0049] Please refer to Figure 4-5 , Figure 4 This is a schematic structural diagram of a specific implementation of the connector provided by the present invention. Figure 5 for Figure 4 Exploded view of.

[0050] like Figure 4 , Figure 5 As shown, the present invention provides a connector, including: a base 71; two positioning blocks 72, the upper end of one positioning block 72 is provided with a first plug-in portion 721, the upper end of the other positioning block 72 is provided with a first slot 723, and the two positioning blocks 72 are both provided with mounting holes for mounting tension rods 73; in the assembled state, the lower ends of the two positioning blocks 72 are both plugged and fixed to the base 71, the first plug-in portion 721 is plugged and fixed to the first slot 723 in the up and down directions, and the two tension rods 73 are coaxial.

[0051] The connector 7 provided by the present invention has two positioning blocks 72 whose lower ends are plugged and fixed on the base 71, and the upper ends of the two positioning blocks 72 can be plugged and fixed to each other in the up and down directions. Because the contacting working surfaces are both installation surfaces, the assembly gap can be controlled by processing technology, so that the upper and lower ends of the two positioning blocks 72 can be assembled more reliably. During use, the two pull rods 73 are not prone to eccentricity, thereby largely avoiding the inclination of the pile end face of the concrete pile caused by the use of the connector 7, as well as a series of problems caused by the inclination of the pile end face.

[0052] It should be noted that the above-mentioned “plug-in fixation” means that, except in the plug-in direction, no relative displacement can occur between the two components, so that the two plug-in fixation components can be fixedly connected in the non-plug-in direction.

[0053] The tension rod 73 can be specifically a screw rod 5, and accordingly, the mounting hole can be set as a threaded hole, and the tension rod 73 can be connected to the positioning block 72 by a threaded connection. The embodiment of the present invention adopts the mutual positioning of the two positioning blocks 72 and the plug-in positioning of the two positioning blocks 72 and the base 71, which mainly relies on the assembly accuracy between the positioning blocks 72 and the base 71 to ensure the coaxial setting of the two threaded holes after the assembly is completed, and then ensure the coaxiality of the two screw rods 5 (tension rod 73), which can overcome the problem of the two screw rods 5 not being coaxial that may be caused by the contact positioning of the screw rod 5 and the slot on the side wall of the pile box in the prior art, and thus can better ensure that the pile end face of the concrete pile is perpendicular to the bottom wall 31 and the side wall of the groove.

[0054] In addition, the tension rod 73 and the mounting hole may also be connected by welding, clamping, etc., which are all options that can be adopted in specific implementation.

[0055] Furthermore, the positioning block 72 provided with the first plug-in portion 721 may also be provided with a second slot 724, and the positioning block 72 provided with the first slot 723 may also be provided with a second plug-in portion 722. In the assembled state, in addition to the plug-in cooperation between the first plug-in portion 721 and the first slot 723 in the up-down direction, the second plug-in portion 722 may also be plug-in-fixed with the second slot 724 in the up-down direction, thereby further improving the connection reliability of the upper ends of the two positioning blocks 72.

[0056] For ease of description, combined Figure 5 , you can Figure 5 The positioning block 72 on the left side is called the first positioning block, and the positioning block 72 on the right side is called the second positioning block.

[0057] In a specific solution, the first positioning block and the second positioning block may both include a body 725, wherein the upper end of the body 725 of the first positioning block (hereinafter referred to as the first body) may be provided with an extension section 726 (hereinafter referred to as the first extension section) extending toward the body 725 of the second positioning block (hereinafter referred to as the second body), and the upper end of the second body may also be provided with an extension section 726 (hereinafter referred to as the second extension section) extending toward the first body; the end of the first extension section away from the first body may be provided with a downwardly extending lower extension section, which may be the aforementioned first plug-in portion 721, and the aforementioned second slot 724 may be formed between the first plug-in portion 721 and the first body; the end of the second extension section away from the second body may be provided with an upwardly extending upper extension section, which may be the aforementioned second plug-in portion 722, and the aforementioned first slot 723 may be formed between the second plug-in portion 722 and the second body.

[0058] When assembling the two positioning blocks 72, the first positioning block can be lifted and the first plug-in portion 721 can be placed opposite to the first slot 723, and then the first positioning block can be lowered. Under the action of gravity, the first plug-in portion 721 will naturally be plugged into the first slot 723, and the second plug-in portion 722 will naturally be plugged into the second slot 724, so as to complete the plug-in fixation of the two positioning blocks 72.

[0059] It should be pointed out that the above description of the specific structure of the first plug-in portion 721, the second plug-in portion 722, the first slot 723, and the second slot 724 is only an exemplary scheme of an embodiment of the present invention, and it cannot be used as a limitation on the scope of implementation of the connector 7 provided by the present invention. Under the condition of satisfying the functions, the above-mentioned plug-in portions and plug-in slots may also adopt other structures; for example, the first slot 723 may be a groove arranged on the upper surface of the second rear extension segment, and the second slot 724 may be a groove arranged on the lower surface of the first rear extension segment. In this way, they can also be plugged together with the first plug-in portion 721 and the second plug-in portion 722.

[0060] In addition, the number of each of the above-mentioned plug-in parts and each of the slots can be one or more. During specific implementation, those skilled in the art can make settings according to actual needs.

[0061] Still Figure 5 As shown, the base 71 may include a bottom plate 711, and both longitudinal ends of the bottom plate 711 may be provided with upwardly extending clamping plates 712, and the two clamping plates 712 and the bottom plate 711 may be enclosed to form an installation cavity 713; in the assembled state, the lower ends of the two positioning blocks 72 can be inserted into the installation cavity 713, and the two positioning blocks 72 can respectively abut against the two clamping plates 712 to position the lower ends of the two positioning blocks 72.

[0062] In detail, the body 725 of the positioning block 72 may include a thin plate portion 725a and a thick plate portion, wherein the thick plate portion may be located above the thin plate portion 725a, and a step surface 725b may be formed between the two. During assembly, the thin plate portion 725a may be inserted into the mounting cavity 713, and the step surface 725b may abut against the upper plate surface of the card plate 712; in this way, the positioning block 72 inserted into the base 71 is equivalent to "sitting" on the card plate 712, the step surface 725b may fit with the upper surface of the card plate 712, the side plate surface of the thin plate portion 725a may fit with the side plate surface of the card plate 712, and the bottom surface of the thin plate portion 725a may fit with the upper surface of the bottom plate 711, and the positioning block 72 and the base 71 may have a larger contact area, which is more conducive to ensuring the connection reliability between the two; at the same time, the size of the base 71 in the longitudinal direction may be smaller, which may make the structure of the connector 7 more compact.

[0063] The number of the card plates 712 on the same longitudinal side may be one or more. When there are more than one card plates 712 , the card plates 712 on the same longitudinal side may be spaced apart in the transverse direction.

[0064] In the above scheme, the two positioning blocks 72 are inserted into the installation cavity 713, and the installation cavity 713 is equivalent to a large insertion slot, so that the two positioning blocks 72 can be inserted into it at the same time. In fact, the base 71 can also be provided with insertion slots for the two positioning blocks 72, or the insertion slots can be provided on the top of the positioning blocks 72, and then the base 71 can be provided with an insertion part (such as the aforementioned clamping plate 712), which can also achieve the insertion and fixation of the positioning blocks 72 and the base 71.

[0065] Here, the embodiment of the present invention does not limit the lateral dimensions of the connector 7, which can be set according to actual use requirements. In a preferred solution, the bottom surface of the connector 7 can fit with the bottom wall 31 of the groove of the mold 3, and the lateral dimensions of the connector 7 can make its two lateral end surfaces fit with the two side walls of the groove.

[0066] Embodiment 2

[0067] Please refer to Figure 6-11 , Figure 6 This is a structural schematic diagram of a specific implementation of the tensioning device provided by the present invention. Figure 7 for Figure 6 A structural schematic diagram of a specific implementation of the intermediate tension plate, Figure 8 for Figure 7 Side view of Fig. 9 for Figure 6 A structural schematic diagram of another specific implementation of the intermediate tension plate, Fig.10 for Figure 6 Structural schematic diagrams of two other specific implementations of the intermediate tension plate, Fig.11 for Figure 6 Schematic diagram of the structure of the plate body of the intermediate tension plate.

[0068] like Figure 6 As shown, the present invention also provides a tensioning device, including a mold 3, wherein two tensioning plates are arranged in the mold cavity of the mold 3, and a plurality of stress-bearing bars 13 of concrete piles are connected between the two tensioning plates. The stress-bearing bars 13 can specifically be any long strip-shaped objects that can meet the building strength requirements, such as round steel, threaded steel, PC (Prestressed Concrete) steel rod, etc.; tensioning retaining walls 8 are also arranged at both ends of the mold 3, wherein at least one tensioning retaining wall 8 is connected to the tensioning plate adjacent thereto by a connector 7, and the connector 7 can adopt the connector 7 in Example 1, and one tensioning rod 73 of the connector 7 can be connected to the tensioning retaining wall 8, and the other tensioning rod 73 can be connected to the tensioning plate.

[0069] Since the above-mentioned connector 7 already has the above-mentioned technical effects, the tensioning device having the connector 7 should also have similar technical effects, so it will not be described in detail here.

[0070] In order to further improve the inclination of the pile end surface of the concrete pile, the embodiment of the present invention may also improve the structure of the tensioning plate.

[0071] like Figure 7 , Figure 8 As shown, the tensioning plate includes a plate body 1, which has a first plate surface 1a, which is used to contact the concrete pile when pouring the concrete pile. The plate surface of the plate body 1 opposite to the concrete pile is the second plate surface 1b, which is also the plate surface facing the connector 7, and a supporting component 2 can be provided at its lower end; in the use state, the supporting component 2 provided at the lower end can be in contact with the bottom wall 31 of the mold cavity of the mold 3 to support the first plate surface 1a to be perpendicular to the bottom wall 31.

[0072] By adopting this structure, the supporting component 2 is equivalent to locally thickening and widening the contact area between the plate body 1 and the bottom wall 31 of the mold cavity, so that the friction contact area between the tensioning plate and the inner wall of the mold cavity is increased, thereby increasing the reverse bending moment provided by the friction force to resist the overturning bending moment in the tensioning direction, so as to ensure that the first plate surface 1a of the plate body 1 is always perpendicular to the bottom wall 31 as much as possible, thereby improving or overcoming the problem of the inclination of the pile end face of the formed concrete pile.

[0073] In addition, since the support component 2 is in contact with the bottom wall 31, when the plate body 1 has a tendency to overturn, the support component 2 can transmit an anti-overturning support force to the plate body 1, which can also overcome the overturning of the plate body 1 to a certain extent; at the same time, the support component 2 can also strengthen the plate body 1 to improve the strength of the plate body 1, reduce the degree of deformation of the plate body 1 when it is tensioned, which is beneficial to extend the service life of the plate body 1.

[0074] Furthermore, at least one of the two lateral ends of the second plate surface 1b may also be provided with a support component 2. In the use state, the support component 2 provided at the side end is in contact with 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 also improve the stability of the tensioning plate, thereby improving or ensuring the perpendicularity of the first plate surface 1a of the tensioning plate to the bottom wall 31 of the mold cavity to a greater extent. The "side wall of the corresponding side" here refers to the side wall on the same side as the support component 2 provided at the side end.

[0075] Combination Figure 6 The aforementioned support member 2 is provided at the lower end of the second plate surface 1b mainly to improve or overcome the problem of the top of the plate body 1 tipping forward (see Figure 1), and by providing support components 2 at the two lateral side ends of the second plate surface 1b, the friction contact area between the lateral side of the tensioning plate and the side wall of the mold cavity can be increased to improve or overcome the problem of the lateral side of the plate body 1 tipping forward. The principle is similar to that of the support component 2 at the lower end of the second plate surface 1b, and a repeated description is not given here.

[0076] It should be known that the mold cavity set in the mold 3 usually has a certain draft angle, that is, its two side walls are not perpendicular to the bottom wall 31, but gradually tilt outward from bottom to top to form a gradually expanding notch, so as to facilitate demolding; wherein, the inclination angle of the two side walls flipping outward from the vertical state is the draft angle, and its value is usually between 0.5-2 degrees, which is related to the actual situation. In this article, the position farthest from the center of the mold cavity in the horizontal direction is the outside.

[0077] In order to better prevent the end face of the concrete pile from tilting, at least one of the two lateral end faces 1c of the plate body 1 can be arranged to tilt outwards at a predetermined angle from bottom to top, so as to prevent the end face of the concrete pile from tilting. Fig.11 For the perspective, the two lateral side end faces 1c of the plate body 1 can be set as the above inclined surfaces, that is, the plate body 1 can be set as an inverted isosceles trapezoid (when only one side end face 1c is an inclined surface, the plate body 1 can be an inverted right-angle trapezoid), and the predetermined angle can be consistent with the draft angle of the mold cavity. When in use, the two lateral side end faces 1c of the plate body 1 can fit tightly with the two side walls of the mold cavity. In this way, the plate body 1 and the mold cavity are both structures that are wide at the top and narrow at the bottom. Due to size limitations, the wider upper part of the plate body 1 cannot tilt downward to the narrower lower space of the mold cavity, which can limit the forward or backward tipping of the top of the plate body 1, thereby ensuring to a greater extent that the first plate surface 1a of the plate body 1 is perpendicular to the bottom wall 31 of the mold cavity.

[0078] In the first option, if Figure 7 , Figure 8 As shown, the number of support components 2 arranged at the lower end and the side end of the second plate surface 1b can be one. In this case, the lateral dimension of the support component 2 arranged at the lower end can be nearly consistent with the lateral dimension of the bottom surface of the plate body 1, and the dimension of the support component 2 arranged at the side end in the up and down directions can be nearly consistent with the dimension of the side end surface 1c of the plate body 1 in the up and down directions, so as to provide greater supporting force for the bottom surface and side end surface 1c of the plate body 1.

[0079] The three supporting components 2 may be interconnected or independent of each other. In the embodiment of the present invention, it is preferred to adopt an interconnected solution so that the supporting components 2 can also support each other to provide greater strength.

[0080] Furthermore, the support components 2 at these three locations can adopt an integrated structure. In this case, the support component 2 as a whole will present a "ㄩ"-shaped structure. Then, the integrated support component 2 can be fixed to the plate body 1 by welding or the like. In this way, the connection process between the support components 2 can be omitted to improve the installation efficiency.

[0081] Furthermore, the support components 2 at these three locations and the plate body 1 can be set as an integrated structure as a whole. In this case, the verticality deviation generated during the installation process can be avoided, and the connection and installation process of the support components 2 and the plate body 1 can be omitted, which can greatly improve the installation efficiency.

[0082] In this solution, since the extension length of the support component 2 is relatively long, a number of reinforcing components 4 can also be provided. The reinforcing components 4 can specifically be reinforcing elements such as reinforcing ribs or reinforcing plates, which are used to connect the support component 2 and the plate body 1. The support component 2 and the plate body 1 can be reinforced to ensure the connection strength between the support component 2 and the plate body 1, thereby improving the supporting and positioning effect of the support component 2 on the plate body 1.

[0083] In the second option, if Fig. 9 As shown, the number of support components 2 arranged at the lower end of the second plate surface 1b can be multiple, and the support components 2 located at the lower end can be arranged at intervals along the lateral direction. When in use, each support component 2 can be in contact with the bottom wall 31 of the mold cavity; the number of support components 2 arranged at the two side ends can also be multiple, and the support components 2 on the same side can be arranged at intervals along the up and down directions. When in use, each support component 2 on the same side can also be in contact with the side wall of the corresponding side of the mold cavity.

[0084] Compared with the first solution, the size of each supporting component 2 in the second solution can be smaller, and there is no need to extend a long distance in the lateral or vertical direction, so the weight of the tensioned plate finally formed will be smaller.

[0085] Specifically, the first solution described above can be seen in the accompanying drawings. Figure 7 , Figure 8 The supporting member 2 is a relatively large flat plate and needs to be used in conjunction with the triangular reinforcing member 4. The second solution described above can be found in Fig. 9 Each supporting component 2 only needs to be a small-sized block, plate, or profile component (in fact, the reinforcing component 4 in the first solution can be directly used). The weight of the tensioning plate will be greatly reduced, which can reduce the labor intensity of the staff.

[0086] The entire bottom surface or part of the bottom surface (such as Fig.10-b) can be coplanar with the bottom surface of the plate body 1, and all or part of the outer side surfaces of the support member 2 provided at the side end can 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 friction contact area and providing supporting force; or, at least one edge ( Fig.10 -a) or at least one vertex can 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 can be coplanar with the side end surface 1c of the corresponding side of the plate body 1. In this case, the support component 2 has limited increase in the friction contact area, and mainly relies on providing a supporting force to overcome the overturning of the plate body 1. Both methods are effective in improving or overcoming the overturning of the plate body 1. In specific implementation, those skilled in the art can select one or use a combination according to actual needs.

[0087] The tension rod 73 may be a screw rod 5, and may also include a tightening component 6. The plate body 1 may be provided with a first threaded hole 11 and a plurality of through holes 12. Each through hole 12 is used to connect the stress reinforcement bolt with the nut at the stress reinforcement head, so that each stress reinforcement 13 in the stress reinforcement cage is kept in a preset position. The tightening component 6 may be provided with a second threaded hole. The tightening component 6 may be fixed to the second plate surface 1b in advance by welding or other methods, or the tightening component 6 and the plate body 1 may also be an integrated structure. In this case, the first threaded hole 11 and the second threaded hole will be formed together. During installation, the screw rod 5 may be screwed to the second threaded hole and the first threaded hole 11 to be connected to the plate body 1 of the tensioning plate.

[0088] With this design, the tightening component 6 is equivalent to extending the length of the connection portion between the screw rod 5 and the plate body 1, which can largely avoid the bending deformation of the screw rod 5 and the center deviation caused by the thread gap at the connection between the screw rod 5 and the plate body 1, which is beneficial to ensure the coaxial setting of the screw rod 5 and the plate body 1. The anti-overturning effect of the plate body 1 can be improved by the tensioning force and the concentricity of the first threaded hole 11 and the second threaded hole.

[0089] The tightening member 6 may not be fixedly connected to the plate body 1, but may only be abutted against the plate body 1 by means of the threaded engagement with the screw 5, which is also an option that can be adopted in specific implementation. For example, in addition to the scheme in which the tightening member 6 is integrally formed with the plate body 1, the tightening member 6 may adopt a conventional nut.

[0090] Still Figure 6 From a perspective, the screw rod 5 may have a front section extending out of the tensioning retaining wall 8, and a locking nut 81 may be screwed on the front section. When an external driving device drives the tensioning plate to be tensioned into place, the locking nut 81 may be against the tensioning retaining wall 8 to prevent the tensioning plate and the screw rod 5 from returning to their original positions under the reaction force of the anti-deformation of the force-bearing reinforcement 13, thereby ensuring the tensioning effect.

[0091] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A connector, characterized in that: include: Base (71); Two positioning blocks (72), one of the positioning blocks (72) having a first plug-in portion (721) at its upper end, the other of the positioning blocks (72) having a first slot (723) at its upper end, and both positioning blocks (72) having mounting holes for mounting their corresponding tension rods (73); In the assembled state, the lower ends of the two positioning blocks (72) are both plugged and fixed to the base (71), the first plug-in portion (721) is plugged and fixed to the first slot (723) in the up-down direction, the two tension rods (73) are coaxial, and the two positioning blocks are arranged along the axial direction of the tension rod; The mounting hole is a threaded hole, and the tension rod (73) is a screw rod (5).

2. The connector according to claim 1, characterized in that: The positioning block (72) provided with the first plug-in portion (721) is also provided with a second slot (724), and the positioning block (72) provided with the first slot (723) is also provided with a second plug-in portion (722); in an assembled state, the second plug-in portion (722) is also plugged and fixed with the second slot (724) in the up and down directions.

3. The connector according to claim 2, characterized in that: The positioning block (72) comprises a body (725), and the upper ends of the two bodies (725) are each provided with an extension section (726) extending toward the other body (725); wherein: An extension section (726) of the body (725) is provided with a downwardly extending downwardly extending section at an end away from the body (725); the downwardly extending section is the first plug-in portion (721), and the second slot (724) is formed between the downwardly extending section and the body (725); The extension section (726) of the other body (725) is provided with an upwardly extending upper section at the end away from the body (725), the upper section being the second plug-in portion (722), and the first slot (723) is formed between the upper section and the body (725).

4. The connector according to any one of claims 1 to 3, characterized in that: The base (71) comprises a bottom plate (711), and both longitudinal ends of the bottom plate (711) are provided with a clamping plate (712) extending upward, and the two clamping plates (712) and the bottom plate (711) are enclosed to form a mounting cavity (713); The lower ends of the two positioning blocks (72) are both inserted into the installation cavity (713), and the two positioning blocks (72) are respectively abutted against the two clamping plates (712).

5. A tensioning device, comprising a mold (3), wherein two tensioning plates are arranged in a mold cavity of the mold (3), and a plurality of stress-bearing bars (13) of a concrete pile are connected between the two tensioning plates. Tensioning retaining walls (8) are also arranged at both ends of the mold (3), and at least one of the tensioning retaining walls (8) is connected to the tensioning plate adjacent thereto via a connector (7), characterized in that: The connector (7) is the connector according to any one of claims 1 to 4, wherein one tension rod (73) of the connector (7) is connected to the tension retaining wall (8), and the other tension rod (73) is connected to the tension plate.

6. The tensioning device according to claim 5, characterized in that: The tension plate comprises a plate body (1), a first plate surface (1a) of the plate body (1) being used for contacting a concrete pile, a plate surface of the plate body (1) facing the connector being a second plate surface (1b), and a lower end portion and / or at least one lateral side end portion of the second plate surface (1b) being provided with a supporting component (2); In a use state, the support component (2) provided at the lower end portion is in contact with the bottom wall (31) of the mold cavity, and is used to support the first plate surface (1a) to be perpendicular to the bottom wall (31); the support component (2) provided at the side end portion is in contact with the side wall of the corresponding side of the mold cavity, and is used to support the first plate surface (1a) to be perpendicular to the two side walls.

7. The tensioning device according to claim 6, characterized in that: At least one of the two lateral end surfaces (1c) of the plate body (1) is arranged to be inclined outwards from bottom to top at a predetermined angle, and the predetermined angle is consistent with the draft angle of the mold cavity; At least part of the bottom surface or at least one edge or at least one vertex of the support component (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 support component (2) provided at the side end is coplanar with the side end surface (1c) of the corresponding side of the plate body (1).

8. The tensioning device according to claim 7, characterized in that: The number of the supporting component (2) provided at the lower end is one, and the number of the supporting component (2) provided at the two side ends is also one; It also includes a plurality of reinforcing components (4) for connecting the supporting component (2) and the plate body (1); The three support components (2) arranged at the lower end and the three support components (2) arranged at the two side ends are connected to each other; or, the three support components (2) arranged at the lower end and the three support components (2) arranged at the two side ends are an integrated structure.

9. The tensioning device according to claim 7, characterized in that: The number of the supporting components (2) provided at the lower end portion is plural, and the supporting components (2) located at the lower end portion are arranged at intervals in the lateral direction; The number of the supporting components (2) provided at the two side end portions is plural, and the supporting components (2) at the side end portions on the same side are arranged at intervals in the up-down direction.

10. The tensioning device according to any one of claims 5 to 9, characterized in that: The tensioning rod (73) is a screw rod (5) and further comprises a tightening component (6); the plate body (1) of the tensioning plate is provided with a first threaded hole (11), and the tightening component (6) is provided with a second threaded hole; The tightening component (6) is fixed to the second plate surface (1b), or the tightening component (6) and the plate body (1) are an integral structure and are located on the second plate surface (1b), and the screw rod (5) is screwed to the second threaded hole and the first threaded hole (11); or, The screw rod (5) is screwed to the first threaded hole (11), and the tightening component (6) is screwed to the screw rod (5) and fits with the second plate surface (1b).

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