Beam bottom longitudinal bar protection layer supporting device

Abstract

The utility model relates to a beam bottom longitudinal bar protection layer supporting device which comprises a base, a clamping groove and a threaded nail. The base is a rectangular base, an arc-shaped clamping groove is formed in the upper portion of the base and used for containing a beam bottom longitudinal bar, and a threaded hole is formed in the dead center of the clamping groove, penetrates through the base and is used for fixing the supporting device to a beam bottom formwork. According to the utility model, the thickness of the beam bottom steel bar protection layer can be better and more stably controlled.

Description

Technical Field

[0001] The utility model relates to the field of construction, and specifically relates to a supporting device for the longitudinal bar protection layer at the bottom of a beam. Background Art

[0002] Existing traditional steel bar protection layer supporting devices mostly use materials such as concrete blocks, cement blocks, and marble, which have relatively high rigidity. For ultra-large cross-section beams with a self-weight exceeding a certain specification, ordinary materials are difficult to bear the pressure from above. Moreover, during the binding process of beam steel bars, conventional supporting devices are prone to tipping, resulting in the lack of steel bar protection layer after the final concrete pouring. Therefore, there is an urgent need for a steel bar protection layer supporting device with strong compressive capacity, not prone to fragmentation, good anti-tipping ability, and relatively convenient operation. Content of the Utility Model

[0003] The utility model aims to overcome the defects of the prior art and provides a supporting device for the longitudinal bar protection layer at the bottom of a beam, so as to solve the problem that the supporting device for the bottom protection layer of a large cross-section beam is prone to being damaged by excessive load and tipping, resulting in the lack of the steel bar protection layer at the bottom of the beam.

[0004] In order to solve the above technical problems, the utility model is realized as follows:

[0005] A supporting device for the longitudinal bar protection layer at the bottom of a beam, characterized in that: it includes a base, a card slot, and a threaded nail; the base is a rectangular base, and an arc-shaped card slot is provided on its upper part for placing the longitudinal bars at the bottom of the beam. A threaded hole is provided at the center of the card slot and penetrates through to the base for fixing this supporting device on the bottom formwork of the beam.

[0006] The supporting device for the longitudinal bar protection layer at the bottom of a beam is characterized in that: the base is a cuboid frustum of a pyramid, and the minimum angle between the four inclined planes and the bottom shall not be less than 35°, and the maximum angle shall not be greater than 45°.

[0007] The supporting device for the longitudinal bar protection layer at the bottom of a beam is characterized in that: the base is made of solid plastic.

[0008] The supporting device for the longitudinal bar protection layer at the bottom of a beam is characterized in that: the card slot is made of solid plastic.

[0009] The supporting device for the longitudinal bar protection layer at the bottom of a beam is characterized in that: the threaded nail is a stainless steel threaded nail, and the length of its penetration through the threaded hole and anchoring into the bottom formwork of the beam does not exceed 15 mm.

[0010] The beneficial effects of the present utility model are as follows: As can be seen from the above technical solutions, the present application provides a support device for the cover layer of longitudinal bars at the bottom of a beam. The present application has made three improvements on the basis of the conventional support device, namely, the improvement of the material of the support device, the improvement of the base structure form, and the improvement of the fixing method. First of all, due to the selection of raw materials such as cement and concrete for the conventional support device, there are no obvious problems when it is used for beams of ordinary specifications. However, as long as it is used for beams with super-large cross-sections, often because the diameter of the beam bars is large and the overall self-weight of the beam is large, the support device is directly crushed under pressure. Moreover, due to the small contact area at the bottom of the support device, the support device is prone to tipping during the process of tying beam steel bars or pouring concrete, ultimately changing the cover layer thickness. The present application has the following advantages compared with the conventional support device: 1. Since solid plastic is used as the raw material of the support device, it has good toughness, good strength, and excellent impact resistance, and is not prone to brittle fracture; 2. The lower part of the present application uses a quadrangular frustum structure with a relatively large inclination angle, which greatly improves the stability of the support device during use and is not prone to tipping; 3. The present application reserves threaded holes, and directly screws in stainless steel threaded nails for overall fixation after the support device is placed, which is convenient to operate and makes the support device not prone to sliding. In summary, the present application can better and more stably control the cover layer thickness of the bottom steel bars of the beam. Brief Description of the Drawings

[0011] The following further describes the present utility model in detail with reference to the drawings and embodiments:

[0012] Figure 1 It is a schematic structural diagram of the present application.

[0013] Figure 2 It is an axonometric drawing of the present application. Specific Embodiments

[0014] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope claimed by the present application.

[0015] As Figure 1 、 2 shown: A support device for the cover layer of longitudinal bars at the bottom of a beam, which includes a base 1, a card slot 2, and a threaded nail 3; the base is a rectangular base, and an arc-shaped card slot is provided on its upper part for placing the longitudinal bars 4 at the bottom of the beam. A threaded hole 6 is provided at the center of the card slot and penetrates through to the base for fixing this support device on the bottom formwork 5 of the beam.

[0016] This application mainly consists of two parts: a solid plastic base and a solid plastic card slot. The base is a cuboid frustum of a pyramid, and the minimum angle between the four inclined planes and the bottom shall not be less than 35°, and the maximum angle shall not be greater than 45°. The upper part of the base is an arc-shaped card slot for placing the longitudinal bars at the bottom of the beam. A threaded hole is provided at the center point of the card slot, penetrating through to the base, so that after the support device is placed, a stainless steel threaded nail can be used to fix the whole device on the bottom formwork of the beam. The length of the end of the stainless steel threaded nail anchored into the formwork shall not exceed 15 mm. One row of support devices is arranged at each end support of the beam, and then starting from one end, a row is arranged every 500 mm in the length direction to the other end. The number of support devices placed in each row is determined according to the beam section and the number of bottom reinforcements.

[0017] The operation steps are as follows:

[0018] First, according to the beam section size and the bottom reinforcement of the beam, calculate the number of support devices required for each row, and then place one row of support devices at both ends of the beam supports.

[0019] Starting from any end support device of the beam, measure towards the other end. For every 1 m interval, arrange a row of support devices.

[0020] After all the support devices are placed, take out the stainless steel threaded nails that match the specifications of the support devices, insert them into the pre-reserved threaded holes in the center of the support devices and tighten them. Note that the depth of the nails screwed into the formwork shall not exceed 15 mm to prevent inconvenience during later formwork removal.

[0021] After all the support devices are fixed to the formwork surface, place the bottom steel bars of the beam into the plastic card slots respectively, and then successively pass through the stirrups, waist bars, upper steel bars, etc., and tie them firmly in sequence.

[0022] After the steel bars of the beam are tied, carry out concrete pouring. After pouring, wait until the component meets a certain standard strength, and then remove the bottom formwork of the beam.

[0023] After the bottom formwork of the beam is removed, use a cutting machine to cut off the exposed stainless steel threaded nails, and use high-strength grouting material to seal the cutting part of the threaded nail head in a spot-filling manner.

[0024] The above are only the embodiments provided by this application and are not used to limit this application. Although this application has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A beam bottom longitudinal reinforcement protective layer support device, characterized in that: It includes a base, a slot and a threaded nail; the base is a rectangular base with an arc-shaped slot on the upper part for placing the longitudinal reinforcement at the bottom of the beam, and a threaded hole is set in the center of the slot and penetrates through the base to fix the support device on the beam bottom template.

2. A beam bottom longitudinal reinforcement protective layer support device according to claim 1, characterized in that: The base is a rectangular quadrangular pyramid, and the minimum angle between the four inclined surfaces and the bottom shall not be less than 35°, and the maximum angle shall not be greater than 45°.

3. The device for supporting the longitudinal reinforcement protective layer at the bottom of a beam according to claim 1, characterized in that: The base is made of solid plastic.

4. The device for supporting the longitudinal reinforcement protective layer at the bottom of a beam according to claim 1, characterized in that: The card slot is made of solid plastic.

5. The device for supporting the longitudinal reinforcement protective layer at the bottom of a beam according to claim 1, characterized in that: The threaded nail is a stainless steel threaded nail, and the length of the threaded nail passing through the threaded hole and anchored into the beam bottom template does not exceed 15 mm.

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