Large-section bottom plate haunch angle template limiting device

Abstract

The utility model belongs to the field of constructional engineering, and particularly relates to a large-section bottom plate haunch angle template limiting device which comprises a cone nut, the cone nut is upwards connected with an upper screw rod and downwards connected with a lower screw rod, the lower screw rod and a bottom plate reinforcing steel bar are fixed together, the cone nut is embedded in a bottom plate, and the upper end face of the cone nut is flush with the designed elevation of the bottom plate; a fixing plate is welded to the upper screw, an inclined rod is welded to the upper portion of the fixing plate, a horizontal rod is welded to the lower portion of the fixing plate, and the haunch template can be clamped between the inclined rod and the horizontal rod. The device is simple in structure, rigid limiting can effectively control bottom deformation of the haunch template during concrete pouring, the upper screw and the limiting piece can be recycled, the engineering cost is reduced, and meanwhile the cone nut can play a role in controlling a bottom protection layer of the haunch template.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering, and specifically relates to a limiting device for the armpit corner template of a large cross-section base plate. Background Technology

[0002] Large-section structural base plates are generally used in rail transit, large tunnels, and cast-in-place box-type tunnel structures. Due to structural stress, haunches are usually set on both sides of the base plate to strengthen the structural stress. The haunches are usually reinforced with standardized steel formwork or combined wooden formwork. During concrete pouring, the bottom of the haunch formwork may deform. Currently, there is no suitable haunch formwork limiting device. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a large cross-section base plate armpit corner template limiting device.

[0004] This invention is achieved through the following technical solution:

[0005] A limiting device for a large-section base plate armpit corner template includes a conical nut. The upper part of the conical nut is threaded upward to an upper screw rod, and the lower part of the conical nut is threaded downward to a lower screw rod. The conical nut is embedded in the base plate, and the upper end face of the conical nut is flush with the design elevation of the base plate. The lower screw rod is fixed together with the reinforcing steel of the base plate. A fixing plate is welded to the upper screw rod, and a diagonal bar is welded to the upper part of the fixing plate. A horizontal bar is welded to the lower part of the fixing plate. The inclination of the diagonal bar is consistent with the inclination of the armpit corner template, and the armpit corner template can be locked between the diagonal bar and the horizontal bar.

[0006] Preferably, both the diagonal and horizontal bars are made of steel reinforcement.

[0007] The large-section base plate armpit corner template limiting device of the present invention has a simple structure. The rigid limiting can effectively control the deformation of the bottom of the armpit corner template during concrete pouring. After the armpit corner template is removed, the upper screw and the limiting part can be reused, which reduces the project cost. At the same time, when the structural base plate concrete is poured, the cone nut in the limiting device can be used to control the concrete elevation of the base plate, which can play a role in controlling the bottom protective layer of the armpit corner template. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the construction state structure in this embodiment;

[0009] Figure 2 This is a schematic diagram of the limiting device structure in this embodiment;

[0010] Figure 3 This is a schematic diagram of the disassembled structure of the limiting device in this embodiment.

[0011] In the diagram, 1 is a conical nut, 2 is an upper screw, 3 is a lower screw, 4 is a fixing plate, 5 is a diagonal brace, 6 is a horizontal bar, and 7 is a haunch corner template. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0013] This embodiment includes a conical nut 1, which can be a conical nut 1 on a segmented screw rod. The upper part of the conical nut 1 is threaded upwards to the upper screw rod 2, and the lower part of the conical nut 1 is threaded downwards to the lower screw rod 3. The lower screw rod 3 is welded to the bottom plate reinforcement of the structure. The conical nut 1 is pre-embedded in the bottom plate of the structure, and the upper end face of the conical nut 1 is flush with the design elevation of the bottom plate. During concrete pouring, the conical nut 1 and the lower screw rod 3 are cast integrally with the bottom plate, and the upper end face of the conical nut 1 is flush with the upper surface of the poured bottom plate. Therefore, the conical nut 1 can also play a role in controlling the bottom protective layer of the haunch corner formwork 7. The height of the poured bottom plate concrete is controlled according to the height of the conical nut 1. When the conical nut 1 is pre-embedded, its upper end face height is controlled to be consistent with the designed upper surface height of the bottom plate.

[0014] A limiting component is welded onto the upper screw 2. This limiting component includes a fixed plate 4, a diagonal brace 5, and a horizontal bar 6. The fixed plate 4 is welded to the upper screw 2. The diagonal brace 5 is welded to the upper part of the fixed plate 4, and its upward inclination matches the inclination of the armhole corner template 7. The horizontal bar 6 is welded to the lower part of the fixed plate 4. A trapezoidal opening is formed between the diagonal brace 5 and the horizontal bar 6, gradually widening towards the armhole corner template 7. The armhole corner template 7 can be secured between the diagonal brace 5 and the horizontal bar 6. Preferably, both the diagonal brace 5 and the horizontal bar 6 are made of steel reinforcement, which can be fabricated from discarded steel reinforcement found on the construction site.

[0015] During construction, after the reinforcing bars of the structural base slab are tied, the lower and upper threaded rods 3 are screwed onto the lower part of the conical nut 1, so that the upper end face of the conical nut 1 is at the designed elevation of the base slab. The lower threaded rod 3 is welded to the reinforcing bars of the base slab. The upper threaded rod 2 is threaded onto the upper part of the conical nut 1. The upper threaded rod 2 is screwed so that the opening formed by the diagonal rod 5 and the horizontal rod 6 faces the direction of the armpit corner template 7. The height of the horizontal rod 6 is finely adjusted according to the height of the armpit corner template 7. A set of limiting devices of the present invention is fixed at intervals along the length of the armpit corner template 7. Then the armpit corner template 7 is installed, so that the lower part of the armpit corner template 7 is locked between the diagonal rod 5 and the horizontal rod 6, thereby rigidly limiting the bottom of the armpit corner template 7, which can effectively control the deformation of the bottom of the armpit corner template 7 during concrete pouring. During concrete pouring, the height of the base slab can be referenced to the upper end face of the conical nut 1. The poured concrete is flush with the upper end face of the conical nut 1. The conical nut 1 also has the function of controlling the bottom protective layer of the armpit corner template 7. When removing the axle corner template 7, unscrew the upper screw 2 from the conical nut 1. The upper screw 2 and the limiting part welded to it can be reused.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A limiting device for a large-section base plate armpit corner template, characterized in that: The system includes a conical nut (1), with an upper screw (2) threaded upwards at the top and a lower screw (3) threaded downwards at the bottom. The conical nut (1) is embedded in the base plate, and the upper end face of the conical nut (1) is flush with the design elevation of the base plate. The lower screw (3) is fixed together with the reinforcing steel of the base plate. A fixing plate (4) is welded on the upper screw (2), with a diagonal rod (5) welded on the upper part of the fixing plate (4) and a horizontal rod (6) welded on the lower part of the fixing plate (4). The inclination of the diagonal rod (5) is consistent with the inclination of the armpit corner template (7), and the armpit corner template (7) can be locked between the diagonal rod (5) and the horizontal rod (6).

2. The large-section base plate armpit corner template limiting device according to claim 1, characterized in that: Both the diagonal bar (5) and the horizontal bar (6) are made of steel bars.

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