Special pouring end plate for prestressed tension platform of pre-tensioning method

Abstract

The utility model discloses a special pouring end plate of pre-tensioning method prestress tension platform, constitute by end plate subassembly and locking component. End plate subassembly includes base, end plate main part and roof, form upper and lower two layers waist type anchor rod through -hole, realize hole distance stepless regulation and zero slurry leakage, locking component adopts exempt from to tear open steel wire lock catch cooperation first, second sealing plate, form "self -locking - counter -topping " double insurance, can bear anchor rod retraction impact. Base and end plate main part joint gap are equipped with elastic sealing strip, and one person completes dismounting, and the weight is lighter than steel plate end plate. A set of end plate covers anchor rod, and double -deck branch promotes the strength of anchorage zone, solves the problem that traditional end plate leaks slurry, and replaces slowly, and the problem that general difference is solved, is applicable to long line pedestal high frequency prefabrication production.

Description

Technical Field

[0001] This utility model relates to the field of pre-tensioned precast component forming mold technology, and in particular to a special casting end plate that combines anchor positioning, quick assembly and disassembly and grout leakage prevention functions. Background Technology

[0002] The pre-tensioning long-line platform needs to be equipped with end plates at both ends of the mold to maintain the position of the anchor rod, transmit the initial tension and seal the concrete cavity. The existing end plates generally have the following defects: (1) The through holes of the anchor rod are fixed round holes and the hole spacing is not adjustable. When changing the specifications of the steel strand, the end plates need to be replaced as a whole, which is costly; (2) The upper and lower layers of anchor rods are arranged on the same plane. When the concrete is vibrated, honeycomb is easily formed, which reduces the strength of the anchoring zone; (3) The gap between the anchor rod and the hole wall is sealed only by the rubber ring. During the vibration process, the ring body shifts, resulting in serious grout leakage and high cleaning costs; (4) The end plate is fastened to the mold with through bolts. Disassembly and assembly require two people to cooperate. It takes more than 20 minutes for one end, which affects the production line rhythm; (5) After tensioning, the anchor rod retracts and the end plate is easily deformed by impact, resulting in low reuse rate.

[0003] Patent application number CN202321120437.X discloses a pre-tensioned precast slab structure for road surface that compensates for end stress through self-stressing joints. The structure includes: pre-tensioned precast slabs spaced apart, with a self-stressing joint formed between the ends of two adjacent pre-tensioned precast slabs; each pre-tensioned precast slab is composed of precast concrete and multiple longitudinal steel strands and multiple transverse reinforcing bars evenly distributed within the precast concrete; equidistantly positioned spiral reinforcements are cast into the precast concrete and fixed to the steel strands; self-stressing tendons are evenly distributed at both ends of each pre-tensioned precast slab; the inner ends of the self-stressing tendons are anchored in the precast concrete; adjacent pre-tensioned precast slabs are welded together by aligned self-stressing tendons; expansive concrete is poured into the self-stressing joint; the steel strands are laid along the length of the slab, and their placement is 1-2 cm below the longitudinal centerline of the pre-tensioned precast slab.

[0004] However, the aforementioned patented technologies cannot effectively seal the technical problems of leakage, and they also cannot solve the defects in the existing technologies, nor do they provide any technical inspiration for solving the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a dedicated casting end plate for a prestressed tensioning table, in order to solve the problems mentioned in the background art.

[0006] (1) How to achieve the function of adjustable anchor bolt hole position and double-layer splitting, and provide a special casting end plate for a prestressed tensioning table for single-person quick installation.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A special casting end plate for a prestressed tensioning table;

[0009] Includes endplate assembly and locking assembly;

[0010] The end assembly includes a base, an end plate body, and a top plate. The upper end face of the end plate body has several first anchor rod through slots, and the lower end face of the end plate body has several third anchor rod through slots. The top plate is located on the upper back of the end plate body, and the lower end face of the top plate has several second anchor rod through slots. The several first anchor rod through slots of the end plate body and the several second anchor rod through slots of the top plate are in a one-to-one correspondence. Furthermore, the several first anchor rod through slots of the end plate body and the several second anchor rod through slots of the top plate constitute several first anchor rod waist-shaped through holes for anchor rods to pass through.

[0011] The base is fixed between the bottom template of the casting mold of the precast anchor beam and the bottom template of the casting mold. The base is located at the lower back of the main body of the end plate. The upper surface of the base has several fourth anchor rod through slots. The several third anchor rod through slots of the main body of the end plate and the several fourth anchor rod through slots of the base are in a one-to-one correspondence. The several third anchor rod through slots of the main body of the end plate and the several fourth anchor rod through slots of the base form several second anchor rod waist-shaped through holes for the anchor rods to pass through.

[0012] The locking assembly includes several anchor bolt latches, which are arranged in pairs, with the anchor bolt latches in the same group fixed to the same anchor bolt.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the locking assembly also includes a first sealing plate, which is placed on the back of the top plate. The first sealing plate is located between several anchor bolts with waist-shaped through holes in the first anchor bolts, and the anchor bolt buckles on the same anchor bolt abut against the front of the storage end plate body and the back of the first sealing plate respectively.

[0015] Furthermore, the upper front of the base has an assembly slot that mates with the lower part of the end plate body.

[0016] Furthermore, the locking assembly also includes a second sealing plate, which is located between the anchors of a plurality of second anchor waist-shaped through holes.

[0017] After adopting this structure, (1) fix the base along the bottom template of the casting mold of the precast anchor beam to the design position, and insert quick pins to complete the bottom positioning; (2) the lower anchor rods pass through the second waist-shaped through hole in sequence and install the end plate body; (3) the upper anchor rods pass through the first waist-shaped through hole in sequence, slide the top plate and insert spring pins; (4) install the first and second sealing plates and tighten them; (5) when the anchor rod is fitted into the anchor rod lock, use an electric wrench to gently tap the lock to make it hold tight, and the end face of the lock automatically abuts against the first sealing plate to complete the locking; (6) after the casting, vibration and curing are completed, loosen the anchor rod lock on one side of the first sealing plate, and the end plate body and the top plate can be lifted down as a whole. The anchor rod is cut off at one time, the end plate is undamaged, and it can be recycled after cleaning.

[0018] The beneficial effects of the special casting end plate of the prestressed tensioning table for this prestressed method are:

[0019] (1) The double-layer bundled arrangement increases the concrete bond area and the anchorage zone strength is increased by 15%, thus completely solving the honeycomb problem in the top layer.

[0020] (2) Reduce on-site grout leakage and eliminate the need for end plate cleaning;

[0021] (3) A single person can complete the disassembly and assembly in 3 minutes, which is a significant improvement in efficiency compared to traditional bolt connections;

[0022] (4) The self-locking of the locking buckle and the anti-topping of the sealing plate work together to withstand the impact of the anchor bolt retraction, with zero deformation of the end plate and repeated use;

[0023] (5) Overall weight reduction reduces the labor intensity of workers and meets the high-frequency movement requirements of long-line platforms. Attached Figure Description

[0024] Figure 1 This is one of the perspective views of the usage state of the special casting end plate of the prestressed tensioning table.

[0025] Figure 2 This is the second perspective view of the usage state of the special casting end plate of the prestressed tensioning table.

[0026] Figure 3 This is a three-dimensional view of the main body of the end plate in an embodiment of the special casting end plate of the prestressed tensioning table.

[0027] Figure 4 This is a three-dimensional view of the top plate in an embodiment of the special casting end plate of the prestressed tensioning table.

[0028] Figure 5 This is a perspective view of the base in an embodiment of the special casting end plate of the prestressed tensioning table.

[0029] Explanation of the labels in the diagram:

[0030] End plate body - 110; First anchor bolt through groove - 111; Third anchor bolt through groove - 112; Top plate - 120; Second anchor bolt through groove - 121; Base - 130; Fourth anchor bolt through groove - 131; Assembly slot - 132; First sealing plate - 210; Second sealing plate - 220; Anchor bolt buckle - 230; -; Anchor bolt - 300. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figures 1 to 5 .

[0035] The special casting end plate of the prestressed tensioning table for this prestressed method includes an end plate assembly and a locking assembly.

[0036] The end assembly includes a base 130, an end plate body 110, and a top plate 120. The upper end face of the end plate body 110 has several first anchor rod through slots 111, and the lower end face of the end plate body 110 has several third anchor rod through slots 112. The top plate 120 is closely attached to the upper back of the end plate body 110, and the lower end face of the top plate 120 has several second anchor rod through slots 121. The several first anchor rod through slots 111 of the end plate body 110 and the several second anchor rod through slots 121 of the top plate 120 are in a one-to-one correspondence, and the several first anchor rod through slots 111 of the end plate body 110 and the several second anchor rod through slots 121 of the top plate 120 constitute several first anchor rod waist-shaped through holes for the anchor rod 300 to pass through.

[0037] The base 130 is fixed to the bottom template of the casting mold of the precast anchor beam. The base 130 is close to the lower back of the end plate body 110. The upper surface of the base 130 has several fourth anchor rod through slots 131. The several third anchor rod through slots 112 of the end plate body 110 and the several fourth anchor rod through slots 131 of the base 130 are in a one-to-one correspondence. The several third anchor rod through slots 112 of the end plate body 110 and the several fourth anchor rod through slots 131 of the base 130 form several second anchor rod waist-shaped through holes for the anchor rod 300 to pass through.

[0038] The upper front of the base 130 has an assembly slot 132 that mates with the lower part of the end plate body 110. After the end plate body 110 mates with the assembly slot 132 of the base 130, both the front of the end plate body 110 and the lower front of the base 130 are on a vertical surface.

[0039] The locking assembly includes a first sealing plate 210, a second sealing plate 220, and several anchor bolt latches 230. The first sealing plate 210 is placed on the back of the top plate 120 and is positioned between several anchor bolts 300 with first anchor bolt waist-shaped through holes. The anchor bolt latches 230 are commercially available wire latches. Several anchor bolt latches 230 are arranged in pairs, and anchor bolt latches 230 in the same pair are fixed to the same anchor bolt 300. The anchor bolt latches 230 on the same anchor bolt 300 abut against the front of the storage end plate body 110 and the back of the first sealing plate 210, respectively. The second sealing plate 220 is positioned between several anchor bolts 300 with second anchor bolt waist-shaped through holes.

[0040] Before casting the precast anchor beam using the pre-tensioning method, multiple anchor rods 300 need to be tensioned along the length of the casting mold. The casting mold for the precast anchor beam includes a bottom template, two side templates, and two sets of special casting end plates for the pre-tensioning prestressing tensioning table arranged on both sides of the side templates. After the end components are assembled, they are fixed to the precast anchor beam casting side templates. The bottom template, the two side templates, and the two sets of special casting end plates for the pre-tensioning prestressing tensioning table together form the cavity for casting the precast anchor beam.

[0041] Multiple anchor bolts 300 are divided into upper and lower layers. First, the base 130 is fixed to the bottom template of the casting mold for the precast anchor beam. The lower layer anchor bolts 300 pass through the fourth anchor bolt through slots 131 of the base 130. The end plate body 110 is then installed. The lower layer anchor bolts 300 pass through the third anchor bolt through slots 112 of the end plate body 110, so that the lower layer anchor bolts 300 pass through the second anchor bolt waist-shaped through slot formed by the end plate body 110 and the base 130. The upper anchor rods 300 penetrate the end plate body 110 through the first anchor rod through slots 111, and the upper anchor rods 300 penetrate the top plate 120 through the second anchor rod through slots 121, so that the upper anchor rods 300 penetrate the first anchor rod waist-shaped through hole formed by the end plate body 110 and the top plate 120. The anchor rods 300 are respectively abutted against the front of the end plate body 110 and the back of the first sealing plate 210 by the anchor rod buckle 230 on the same anchor rod 300, thereby fixing the position of the end plate body 110 and the top plate 120.

[0042] After completing the above operations, steel bars can be tied and concrete poured in the casting chamber to finally form the precast anchor beam.

[0043] The above description is only one embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A special casting end plate for a prestressed tensioning table using the pre-tensioning method, characterized in that: Includes endplate assembly and locking assembly; The end assembly includes a base (130), an end plate body (110), and a top plate (120). The upper end face of the end plate body (110) has several first anchor rod through slots (111), and the lower end face of the end plate body (110) has several third anchor rod through slots (112). The top plate (120) is located on the upper part of the back of the end plate body (110), and the lower end face of the top plate (120) has several second anchor rod through slots (121). The several first anchor rod through slots (111) of the end plate body (110) and the several second anchor rod through slots (121) of the top plate (120) are in a one-to-one correspondence. The several first anchor rod through slots (111) of the end plate body (110) and the several second anchor rod through slots (121) of the top plate (120) form several first anchor rod waist-shaped through holes for the anchor rods (300) to pass through. The base (130) is fixed between the bottom template of the casting mold of the precast anchor beam. The base (130) is located at the lower back of the end plate body (110). The upper surface of the base (130) has several fourth anchor rod through slots (131). The several third anchor rod through slots (112) of the end plate body (110) and the several fourth anchor rod through slots (131) of the base (130) are in a one-to-one correspondence. The several third anchor rod through slots (112) of the end plate body (110) and the several fourth anchor rod through slots (131) of the base (130) form several second anchor rod waist-shaped through holes for the anchor rod (300) to pass through. The locking assembly includes several anchor bolt buckles (230), which are arranged in pairs, with the anchor bolt buckles (230) in the same group fixed to the same anchor bolt (300).

2. The special casting end plate for the prestressed tensioning table according to claim 1, characterized in that: The locking assembly also includes a first sealing plate (210), which is placed on the back of the top plate (120). The first sealing plate (210) is located between several anchor rods (300) with first anchor rod waist-shaped through holes. The anchor rod buckles (230) on the same anchor rod (300) abut against the front of the storage end plate body (110) and the back of the first sealing plate (210).

3. The special casting end plate for the prestressed tensioning table according to claim 1, characterized in that: The upper front of the base (130) has an assembly slot (132) that mates with the lower part of the end plate body (110).

4. The special casting end plate for the prestressed tensioning table according to claim 3, characterized in that: The locking assembly also includes a second sealing plate (220) located between the anchors (300) of a plurality of second anchor waist-shaped through holes.

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