Internal supporting bracket of direct burial electric box

Abstract

An internal supporting bracket of a direct burial electric box comprises an electric box body frame and a bracket inner frame, and is characterized in that the electric box body frame is a rectangular closed box body defined by peripheral side walls, and battens are lined on the periphery of the inner wall of the rectangular closed box body; the support inner frame is a rectangular closed frame formed by erecting angle steel, a pair of bolts is arranged on each of the side walls of the periphery of the support inner frame, nuts of the bolts are arranged on the outer side of the support inner frame, and the lengths of screw rods of the bolts can be adjusted by adjusting the nuts of the bolts. Wherein the support inner frame is placed in the electric box body frame, and a screw rod of the bolt can be adjusted by adjusting a nut of the bolt to abut against the batten so as to support the support in the electric box. The internal supporting bracket of the direct burial electric box has the advantages that the internal supporting bracket of the electric box is simple in structure and convenient to manufacture, deformation and paint falling of the box body are avoided through field prefabrication, the qualified rate of finished products reaches 99%, the installation period is effectively controlled, and the electric box is installed in place smoothly.

Description

Technical Field

[0001] This utility model relates to a bracket, specifically, an internal support bracket for a directly buried electrical box. Background Technology

[0002] In building construction, the location of the electrical box installation area is within a shear wall structure. Construction must consider not only the accuracy of the pre-installed and embedded parts but also the subsequent piping and wiring installation. If only wooden enclosures and pre-drilled holes are made during the pre-installation stage, and the finished box is installed later, it will increase the difficulty of installation, extend the construction period, and significantly increase on-site construction costs. Therefore, pre-installing the finished electrical box during the pre-installation stage is crucial. Ensuring the installation accuracy of the finished box, the quality of the pre-installed box, and how to address the internal support of the finished box to guarantee that the box is undamaged after pouring concrete are key aspects of improving the quality of electromechanical engineering construction.

[0003] Currently, in order to meet the construction schedule requirements, a large number of buildings in my country use the method of pre-embedding electrical boxes during the construction process. However, during the pre-embedding process, there are always various internal support methods for the pre-embedded electrical boxes, which inevitably leads to situations where the pre-embedded electrical boxes are deformed, damaged, or rendered unusable later on.

[0004] Therefore, the known electrical box structure has all the aforementioned inconveniences and problems. Utility Model Content

[0005] The purpose of this utility model is to propose a safe and reliable internal support bracket for a direct-buried electrical box.

[0006] To achieve the above objectives, the technical solution of this utility model is:

[0007] An internal support frame for a directly buried electrical box, comprising a box body frame and an inner frame, characterized in that:

[0008] The electrical box body frame is a rectangular closed box surrounded by four side walls, and the inner walls of the rectangular closed box are lined with strips on all four sides.

[0009] The inner frame of the support is a rectangular closed frame constructed of angle steel. Each of the four sides of the inner frame of the support is provided with a pair of bolts. The nuts of the bolts are located on the outside of the inner frame of the support. Adjusting the nuts of the bolts can adjust the length of the bolt threads.

[0010] Among them: the inner frame of the bracket is placed inside the main frame of the electrical box, and the nut of the adjusting bolt can adjust the bolt screw to press against the plate to form the internal support bracket of the electrical box.

[0011] The internal support bracket of the direct-buried electrical box of this utility model can also be further implemented by the following technical measures.

[0012] The aforementioned internal support bracket for the direct-buried electrical box, wherein a pair of bolts are arranged to cooperate with each other at a certain distance.

[0013] After adopting the above technical solution, the internal support bracket of the direct-buried electrical box of this utility model has the following advantages:

[0014] 1. The internal support frame of the electrical box has a simple structure and is easy to manufacture;

[0015] 2. On-site prefabrication avoids box deformation and paint peeling, achieving a finished product qualification rate of 99%;

[0016] 3. The installation period was effectively controlled, and the electrical box was installed smoothly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal support bracket structure of the electrical box according to an embodiment of the present utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments and accompanying drawings. Example

[0019] The internal support bracket of the direct-buried electrical box of this utility model includes the electrical box body frame and the inner frame of the bracket.

[0020] Please see now Figure 1 , Figure 1 This is a schematic diagram of the internal support structure of the electrical box according to an embodiment of the present utility model. As shown in the figure, the main frame of the electrical box 1 is a rectangular closed box surrounded by four side walls, and each of the four sides of the inner wall of the rectangular closed box is lined with strips 2;

[0021] The inner frame of the support is a rectangular closed frame constructed of angle steel. Each of the four sides of the inner frame of the support is provided with a pair of bolts 3. The nuts of the bolts are located on the outside of the inner frame of the support. Adjusting the nuts of the bolts can adjust the length of the bolt thread.

[0022] Among them: the inner frame of the bracket is placed inside the main frame of the electrical box, and the nut of the adjusting bolt can adjust the bolt screw to press against the plate to form the internal support bracket of the electrical box. Example

[0023] The construction method of the internal support bracket of the direct-buried electrical box of this utility model:

[0024] 1. Cutting and blanking the bracket angle steel

[0025] (1) Based on the dimensions of the finished electrical box, L40*4 angle steel is used. The long and short sides are each 80mm smaller than the internal dimensions of the electrical box to facilitate the completion of the bracket and leave a margin for the strips placed on the top bolts.

[0026] (2) After the back angle steel of the bracket is cut, two notches are cut at both ends so that the thickness of the bracket is less than the thickness of the electrical box by a certain margin, so that the rear pad strip inside the box can support the rear panel of the electrical box and prevent the rear panel of the electrical box from deforming.

[0027] (3) After the angle steel is cut, two ￠10 round holes are opened at appropriate positions in the middle of each angle steel, and ￠10 nuts are welded on the outside so that bolts can be inserted for internal support.

[0028] 2. Welding and forming

[0029] After cutting the angle steel, first complete the square welding to ensure that the front and back of the bracket are flat and on the same plane, without any warping or deformation. The L-side of the back angle steel faces outward, and the rib is trimmed by 20mm and welded to the middle of the two square frames. Double-sided welding is used to ensure a firm weld.

[0030] 3. Apply anti-corrosion coating to bolts.

[0031] Apply two coats of anti-corrosion paint to the welded bracket. Before applying the paint, remove any weld slag and ensure the paint is applied evenly to prevent rust and corrosion of the electrical box. After painting, allow the paint to dry completely before installation.

[0032] 4. Fix the finished electrical box

[0033] (1) After the wall reinforcement is tied, fix the finished electrical box according to the dimensions in the drawing, install the inlet and outlet pipelines of the box in place, use a level to adjust the box level until the box level and vertical deviation are within 1.5‰, reinforce the box and add fixed reinforcement around the box, and tie it in place.

[0034] (2) In order to ensure that the box is squeezed during mold closing and not squeezed too deep into the wall, L-shaped hooks are set at the four corners of the box when fixing the box. The hooks are tied and fixed at the four corners of the box to pull the box so that it will not go deep into the wall when squeezed.

[0035] 5. Install the prefabricated bracket.

[0036] (1) Arrange for a dedicated installation person to place the bracket inside the finished electrical box. Place slats on both sides of the box. The slats should be cut from old templates and the size should not exceed the internal size of the box. The size should be convenient for installation and removal to prevent the bolts from putting local stress on the box and damaging it. Adjust the position of the bracket and place it in the center. Tighten the bolts against the slats, but do not tighten them too much. Just enough so that the bracket will not fall off.

[0037] (2) Add wooden blocks 4 at the corresponding positions behind the box. The size should not exceed the internal dimensions of the box, and should be convenient for installation and removal. The wooden blocks should be placed against the back of the box to prevent overall or partial deformation of the back panel. Tighten the bolts to hold the wooden blocks in place.

[0038] (3) Insert the upper and lower strips, ensuring that the size of the strips is no larger than the internal dimensions of the box, so that it is easy to install and remove. Tighten the bolts against the strips.

[0039] (4) Adjust the position of the bracket, level and straighten it, and tighten the bolts. Tighten the bolts so that the bracket cannot be shaken after it is pressed against the plate, to prevent over-tightening and deformation of the electrical box.

[0040] 6. Cover plate

[0041] (1) After the internal support bracket of the finished electrical box is installed, take photos and videos, and find the supervisor to conduct a preliminary acceptance. After the acceptance is qualified, use 0.7mm iron sheet (the size of the iron sheet is prefabricated according to the size of the electrical box) to seal the box cover, and use self-tapping screws to fix the iron sheet in the original reserved holes on the upper and lower sides of the box.

[0042] (2) After sealing the iron sheet, wrap the iron sheet with transparent tape 3-4 times to prevent the grout from leaking into the box when pouring concrete.

[0043] 7. Pre-embedded parts acceptance

[0044] After the finished electrical box is installed, check whether the reinforcement of the box is in place, whether the outer shell is loose or not secure, and whether the conduit connections and the outer transparent tape are tightly sealed. At the same time, re-measure the verticality and horizontality of the box to see if they meet the requirements. After all checks are completed and found to be correct, report for inspection and find the supervisor for acceptance. After passing the inspection, proceed with the next construction process and start assembling the formwork.

[0045] 8. Monitoring of the pouring process

[0046] (1) When pouring concrete, a dedicated installation person should be arranged to monitor the process simultaneously and throughout.

[0047] (2) When pouring the concrete to the location of the electrical box, remind the pouring and vibration personnel to avoid the location of the electrical box during pouring and vibration. This is to prevent damage to the electrical box during vibration, which could cause problems for later repairs.

[0048] 9. Remove the lower three layers of scaffolding.

[0049] After the wall formwork is removed and the concrete has reached a certain strength, on-site construction workers can dismantle the mounting brackets inside the prefabricated electrical box. During dismantling, the sheet metal should be removed, the internal bracket fastening bolts loosened, and the brackets taken out. They can then be directly used for internal support of the upper-level box. The internal padding strips can be removed or used directly as upper-level support pads.

[0050] 10. Finished Product Protection

[0051] After removing the internal support frame, check the verticality and horizontality of the enclosure. Fill the interior with extruded polystyrene board to completely fill the internal space and prevent damage during later construction. Seal the surface of the enclosure with transparent tape to prevent water from splashing onto the enclosure during concrete curing and causing corrosion inside.

[0052] This utility model possesses substantial features and significant technological advancements. The internal support bracket for the directly buried electrical box utilizes on-site prefabrication, making on-site fabrication simple and convenient, even using waste materials. Compared to traditional construction methods, the internal support bracket effectively controls box deformation and paint peeling during on-site construction, achieving a 99% finished product qualification rate and resulting in superior project quality. Without increasing costs, the internal support bracket effectively controls the installation period for water and electricity installations, ensuring smooth box placement and creating favorable conditions for subsequent processes. It also significantly reduces the time required for later indoor electromechanical installations, such as piping installation, earning praise from clients and meeting their requirements for both timeliness and quality.

[0053] The above embodiments are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should also fall within the scope of this utility model and should be defined by the claims.

Claims

1. An internal support frame for a directly buried electrical box, comprising a box body frame and an inner frame of the support, characterized in that: The electrical box body frame is a rectangular closed box surrounded by four side walls, and the inner walls of the rectangular closed box are lined with strips on all four sides. The inner frame of the support is a rectangular closed frame constructed of angle steel. Each of the four sides of the inner frame of the support is provided with a pair of bolts. The nuts of the bolts are located on the outside of the inner frame of the support. Adjusting the nuts of the bolts can adjust the length of the bolt threads. Among them: the inner frame of the bracket is placed inside the main frame of the electrical box, and the nut of the adjusting bolt can adjust the bolt screw to press against the plate to form the internal support bracket of the electrical box.

2. The internal support bracket of the direct-buried electrical box as described in claim 1, characterized in that, The pair of bolts are spaced a certain distance apart and are designed to cooperate with each other.

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