Bridge engineering crash barrier reinforcement protective layer rapid acceptance tool

Abstract

The utility model provides a kind of bridge engineering crash barrier reinforcing bar protective layer fast acceptance tool, it is related to acceptance tool technical field, including first pole body, first pole body is equipped with the second pole body that can be relative to its telescopic;Telescopic ruler is vertically set in the one end of first pole body and second pole body relatively far away, telescopic ruler is equipped with scale along its length direction, telescopic ruler can adjust telescopic length and fix this position after adjusting to target length;Positioning member is set on first pole body or second pole body, for locking its current position after the telescopic adjustment of second pole body relative to first pole body.This utility model can effectively detect reinforcing bar protective layer thickness before formwork closure or concrete pouring, realize non-damage, visual fast acceptance, improve the efficiency and accuracy of construction quality control.

Description

Technical Field

[0001] This utility model relates to the field of acceptance tools, and more specifically, to a rapid acceptance tool for the steel reinforcement protective layer of bridge engineering crash barriers. Background Technology

[0002] During bridge construction, the facade structures such as crash barriers and cap beams are crucial components of bridge safety and durability. The thickness of the protective layer of the internal reinforcing steel directly affects the structure's load-bearing capacity, durability, and corrosion resistance. According to relevant design specifications, the thickness of the reinforcing steel protective layer must be controlled within the specified range. Insufficient thickness can easily lead to steel corrosion, thereby reducing the structure's service life; excessive thickness may affect the structure's load-bearing capacity and even increase project costs.

[0003] However, in actual construction, after the formwork is installed, since the concrete has not yet been poured or the components have not yet been demolded, traditional methods for detecting the concrete cover of the steel reinforcement (such as using vernier calipers, magnetic thickness gauges, etc.) are difficult to effectively detect the concrete cover of the steel reinforcement on the facade without damaging the structure or dismantling the formwork. There are blind spots in the detection, making it inconvenient to conduct the detection. This results in low efficiency, high retesting rate, and cumbersome process in the acceptance process of related projects, making it difficult to achieve rapid and accurate quality judgment. Utility Model Content

[0004] The purpose of this utility model is to provide a tool for rapid acceptance of the protective layer of steel reinforcement in bridge engineering crash barriers. It can effectively detect the thickness of the protective layer of steel reinforcement before the formwork is closed or the concrete is poured, so as to achieve non-destructive and visual rapid acceptance and improve the efficiency and accuracy of construction quality control.

[0005] This utility model is achieved through the following technical solution:

[0006] A tool for rapid acceptance of the reinforcing steel protective layer of bridge crash barriers, comprising:

[0007] A first rod, on which a second rod is provided that can extend and retract relative to it;

[0008] A telescopic ruler is vertically disposed at the ends of the first rod and the second rod that are relatively far apart. The telescopic ruler has a scale along its length direction. The telescopic ruler can adjust the telescopic length and fix the position after adjusting to the target length.

[0009] A positioning element is disposed on the first rod or the second rod, and is used to lock the current position of the second rod after it has been extended or retracted relative to the first rod.

[0010] Furthermore, the telescopic ruler includes a first ruler body and a second ruler body. The first ruler body is inserted into the second ruler body. A fixed seat is provided at the ends of the first and second ruler bodies that are relatively far apart. The second ruler body is correspondingly slidably disposed in the fixed seat. A limiting member is provided on the fixed seat, and the limiting member can simultaneously fix the positions of the first and second ruler bodies.

[0011] Furthermore, the limiting component includes a limiting bolt and a limiting block. The second ruler body has an abutment groove along its length. The limiting bolt is threaded onto the fixed base. The limiting block is rotatably connected to the limiting bolt. The fixed base has a receiving groove for the limiting block to slide. The limiting block has a T-shaped cross-section. The limiting block abuts against the outer wall of the second ruler body and passes through the abutment groove while simultaneously abutting against the first ruler body.

[0012] Furthermore, an extension rod is provided at the end of the limiting bolt away from the fixed seat, and the end of the extension rod is provided in a pointed cone shape.

[0013] Furthermore, a rubber block is embedded in the fixing seat, and the rubber block is protruding in the initial state and is used to abut against the outer wall of the second ruler.

[0014] Furthermore, an abutment plate is provided at the opposite ends of the first and second rulers.

[0015] Furthermore, the two ends of the abutment plate are provided with arc-shaped plates, which are curved inward toward the fixed seat.

[0016] Furthermore, the abutment plate has a sliding groove along its length. The ends of the first and second rulers, which are opposite to each other, are threaded with limit posts. The limit posts are engaged in the sliding groove and can slide relative to the length of the sliding groove. The sliding groove of the abutment plate is a stepped groove. The diameter of the stepped groove on the side away from the fixed seat is larger than the diameter on the side closer to the fixed seat. The far end of the limit post is provided with a limit end, which is engaged in the groove with the larger diameter of the stepped groove.

[0017] Furthermore, each of the first rod and the second rod has a lighting lamp installed at the ends that are far apart from each other.

[0018] Furthermore, the positioning element includes a positioning bolt, the first rod body is slidably inserted into the second rod body, and the positioning bolt is threadedly connected to the second rod body and is used to abut against the first rod body.

[0019] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0020] 1. This utility model, by incorporating a retractable first and second rod, a graduated telescopic ruler, and a locking positioning component, allows for non-destructive and rapid testing of the concrete cover thickness of reinforcing bars after the formwork is installed. The telescopic ruler can be directly inserted into the formwork of facade components such as guardrails and cap beams. The graduations are set to the upper and lower limits of the concrete cover according to the design drawings, providing a direct visual assessment of whether it falls within the acceptable range required by specifications. This tool has a simple structure and is easy to operate.

[0021] 2. This utility model utilizes a first rod and a second rod that can be used as handles with freely adjustable lengths. A positioning component locks the extension and retraction positions of the first and second rods. Simultaneously, the telescopic ruler can be quickly adjusted and fixed, ensuring measurement accuracy and repeatability. Through mechanical extension and retraction and the limitation imposed by the telescopic ruler, the testing process can be completed by a single person, significantly improving acceptance efficiency, shortening the testing cycle, reducing the retesting rate, and allowing for flexible adjustment according to different sizes and specifications, demonstrating strong adaptability and versatility. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a tool for rapid acceptance of the steel reinforcement protective layer of bridge engineering crash barriers provided by this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged view of section A;

[0024] Figure 3 This utility model is intended to show the structural diagram of the fixing base, the limiting component, and the abutment plate;

[0025] Figure 4 This utility model aims to show exploded views of a telescopic ruler, a limiting component, abutment plate, and limiting post;

[0026] Figure 5 Another embodiment of the rapid acceptance tool for the steel reinforcement protective layer of bridge engineering anti-collision guardrail provided by this utility model;

[0027] Reference numerals: 1-First rod, 2-Second rod, 3-Telescopic ruler, 30-Scale, 31-First ruler, 32-Second ruler, 321-Abutting groove, 4-Positioning component, 41-Positioning bolt, 5-Fixing seat, 50-Receiving groove, 51-Limiting component, 511-Limiting bolt, 512-Limiting block, 52-Rubber block, 6-Extension rod, 7-Abutting plate, 71-Sliding groove, 72-Arc plate, 8-Limiting post, 81-Limiting end, 9-Lighting lamp. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] The following is for reference Figures 1-5 As shown in the figure, and further explained with reference to specific embodiments, this embodiment provides a tool for quick acceptance of the steel reinforcement protective layer of bridge engineering anti-collision guardrails, including a first pole 1, and a second pole 2 that can be extended and retracted relative to it. Both the first pole 1 and the second pole 2 can be used as handles for easy gripping by operators.

[0031] The first rod 1 and the second rod 2 can be connected by a sleeve-type sliding connection. The sliding mating surface can be circular, square, or other anti-rotation cross-sections to maintain stable guidance during extension and retraction. The grip area can be covered with an anti-slip rubber sleeve, a textured layer, or sandblasted anti-slip treatment. The rod material can be lightweight and high-strength materials such as aluminum alloy, stainless steel, and carbon fiber. The ends are sealed with threaded end caps, riveted end caps, or snap-on end caps to prevent foreign objects from entering and affecting the smoothness of extension and retraction.

[0032] The telescopic ruler 3 is vertically positioned at the ends of the first rod 1 and the second rod 2 that are relatively far apart. It has graduations 30 along its length, which can be formed using laser engraving, screen printing, or other processes to ensure wear resistance and legibility. In different embodiments, the telescopic ruler 3 can be locked and adjusted using spring pins, slots, or threads. The main body can be made of stainless steel, aluminum alloy, or fiberglass, and can also be replaced by an electronic ranging module or a laser ranging device to achieve higher precision measurement.

[0033] Reference Figure 1 As shown, the positioning element 4 is disposed on the first rod 1 or the second rod 2, and is used to lock the current position after the second rod 2 is extended or retracted relative to the first rod 1. The positioning element 4 can be installed at any suitable position on the outer wall of the rod, which is convenient for tightening or unlocking with one hand, and has an anti-fall-off structure.

[0034] In this embodiment, specifically, to fix the positions of the first rod 1 and the second rod 2 after extension and retraction, the positioning component 4 includes a positioning bolt 41. The first rod 1 is slidably inserted into the second rod 2, and the positioning bolt 41 is threadedly connected to the second rod 2 and abuts against the first rod 1. The positioning bolt 41 can be made of stainless steel, copper alloy, or engineering plastic, and the threaded end can be equipped with a rubber gasket to reduce wear. In other embodiments, the positioning component 4 can be a locking block, a quick-release chuck, or a spring clip.

[0035] Reference Figure 3 and Figure 4 As shown, the telescopic ruler 3 includes a first ruler body 31 and a second ruler body 32. The first ruler body 31 is inserted into the second ruler body 32, and a dustproof ring or sealing ring can be added to the mating joint. A fixing seat 5 is provided at the opposite ends of the first rod 1 and the second rod 2. The fixing seat 5 can be fixed by welding, threading, riveting, or snap-fit. The second ruler body 32 is slidably disposed within the fixing seat 5, and the sliding surface can be coated with an anti-rust oil film or a low-friction coating. A limiting member 51 is provided on the fixing seat 5, which can simultaneously fix the first ruler body 31 and the second ruler body 32.

[0036] The limiting component 51 includes a limiting bolt 511 and a limiting block 512. The second ruler body 32 has an abutment groove 321 along its length. The abutment groove 321 can be a straight groove, a T-groove, or a dovetail groove. The limiting bolt 511 is threaded onto the fixing seat 5. The limiting block 512 is rotatably connected to the limiting bolt 511 to prevent it from falling off. The fixing seat 5 has a receiving groove 50. The limiting block 512 has a T-shaped cross-section and abuts against the outer wall of the second ruler body 32, passes through the abutment groove 321, and simultaneously abuts against the first ruler body 31. In other embodiments, the limiting component 51 can be multiple bolts that simultaneously tighten the first ruler body 31 and the second ruler body 32, or it can be an integrated locking rod.

[0037] As an optional embodiment, the end of the limiting bolt 511 away from the fixed seat 5 is provided with an extension rod 6, the end of which is cone-shaped, which can push aside the reinforcing bars or obstacles to avoid affecting the telescopic ruler 3 to penetrate into the template for measurement.

[0038] Preferably, a rubber block 52 is embedded in the fixing base 5, which protrudes and abuts against the outer wall of the second ruler 32 in the initial state. The rubber block 52 can be made of a wear-resistant and highly elastic material (such as nitrile rubber, silicone, or polyurethane elastomer), which can generate stable damping during the extension and contraction process to prevent the second ruler 32 from sliding freely off the fixing base 5 due to its own weight or vibration. The rubber block 52 can be semi-circular, wedge-shaped, or convex strip-shaped, and its hardness and protrusion can be adjusted according to the on-site use environment to ensure both smooth grip and secure locking.

[0039] The rubber block 52 and the fixing seat 5 can be installed by embedding, screw pressing or bonding, which is convenient for replacement or maintenance. The contact surface between the rubber block 52 and the outer wall of the second ruler 32 can be designed with fine ridges or corrugations to increase friction and further reduce direct metal-to-metal friction and wear.

[0040] Reference Figure 3 As shown, the first ruler body 31 and the second ruler body 32 are provided with abutment plates 7 at their opposite ends. Abutment plates 7 are used to form stable contact with reinforcing bars, formwork, or other measuring reference surfaces during measurement, thereby increasing the contact area and ensuring measurement stability and data accuracy. The dimensions of the abutment plates 7 can be customized according to the structural dimensions of the reinforcing bar protective layer of different bridge railings. The thickness should be controlled within a range that ensures rigidity without affecting the measurement length. The abutment plates 7 can be thin-plate structures to avoid affecting the length measurement of the telescopic ruler 3. High-strength metal plates such as stainless steel plates or aluminum alloy plates are preferred, but lightweight engineering plastic plates such as polycarbonate plates or fiberglass-reinforced nylon plates can also be used to balance strength and weight, and to prevent deformation or corrosion in low-temperature or high-humidity environments.

[0041] Furthermore, the abutment plate 7 has arc-shaped plates 72 at both ends. The arc-shaped plates 72 are designed to bend inward toward the fixing seat 5. The radius of curvature can be optimized according to the diameter of common steel bars or the edge size of the template, so as to automatically guide and avoid obstacles during measurement and prevent the measurement accuracy from being affected by collision or jamming. The inward curved part of the arc-shaped plate 72 can also be equipped with an anti-wear coating or a rubber coating to reduce direct hard friction with the object being measured and extend its service life.

[0042] The abutment plate 7 has a sliding groove 71 along its length. The sliding groove 71 can be a straight groove, an arc groove, or other shapes to adapt to different measurement environments. The ends of the first ruler 31 and the second ruler 32, which are opposite to each other, are threadedly connected to limit posts 8. This allows the abutment plate 7 to be disassembled according to usage. The limit post 8, engaged in the sliding groove 71, can slide smoothly along its length within the groove, while also possessing a certain degree of rotational freedom, providing fine-tuning space to prevent jamming and ensuring flexible avoidance in complex rebar arrangements. The sliding groove 71 is preferably a stepped groove, with the diameter of the side of the stepped groove away from the fixed seat 5 being larger than the diameter of the side closer to the fixed seat 5. This structure facilitates the engagement and positioning of the limit end 81 of the limit post 8, while preventing accidental detachment. The limit end 81 can be circular, elliptical, or have a cushioned covering structure. When engaged in the groove with a larger diameter, it can be flush with the surface of the abutment plate 7, without affecting the stability and accuracy of the measurement.

[0043] Reference Figure 1 and Figure 2As shown, each of the first rod 1 and the second rod 2, at their ends furthest from each other, is equipped with an illumination lamp 9, preferably a high-brightness, low-power LED lamp, which is connected to a built-in or external power supply via a wire. The illumination lamp 9 may be equipped with a lens, reflector, or diffuser to concentrate or evenly distribute the beam, thereby ensuring clear visibility of the measurement position and scale 30 in low-light construction environments, improving measurement efficiency and safety.

[0044] Reference Figure 5 As shown, in another optional embodiment, the two ends of the first rod 1 and the second rod 2 can be directly connected to the telescopic ruler 3 for measurement, omitting the structure of the fixed seat 5 and the limiting member 51, so as to reduce weight and speed up measurement.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool for rapid acceptance of the reinforcing steel protective layer of bridge crash barriers, characterized in that, include: A first rod (1) is provided with a second rod (2) that can extend and retract relative to it; Telescopic ruler (3), the telescopic ruler (3) is vertically set at the ends of the first rod (1) and the second rod (2) that are relatively far apart. The telescopic ruler (3) has a scale (30) along its length direction. The telescopic ruler (3) can adjust the telescopic length and fix the position after adjusting to the target length. The positioning element (4) is disposed on the first rod (1) or the second rod (2) and is used to lock the current position of the second rod (2) after it has been extended and retracted relative to the first rod (1).

2. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 1, characterized in that, The telescopic ruler (3) includes a first ruler body (31) and a second ruler body (32). The first ruler body (31) is inserted into the second ruler body (32). The ends of the first rod (1) and the second rod (2) that are relatively far apart are provided with a fixed seat (5). The second ruler body (32) is correspondingly slidably disposed in the fixed seat (5). The fixed seat (5) is provided with a limiting member (51). The limiting member (51) can simultaneously fix the positions of the first ruler body (31) and the second ruler body (32).

3. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 2, characterized in that, The limiting member (51) includes a limiting bolt (511) and a limiting block (512). The second ruler body (32) has an abutment groove (321) along its length. The limiting bolt (511) is threaded onto the fixed seat (5). The limiting block (512) is rotatably connected to the limiting bolt (511). The fixed seat (5) has a receiving groove (50) for the limiting block (512) to slide. The limiting block (512) has a T-shaped cross section. The limiting block (512) abuts against the outer wall of the second ruler body (32) and passes through the abutment groove (321) while abutting against the first ruler body (31).

4. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 3, characterized in that, An extension rod (6) is provided at the end of the limiting bolt (511) away from the fixed seat (5), and the end of the extension rod (6) is provided in a pointed cone shape.

5. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 2, characterized in that, A rubber block (52) is embedded in the fixing seat (5). The rubber block (52) is protruding in the initial state and is used to abut against the outer wall of the second ruler (32).

6. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 2, characterized in that, The first ruler (31) and the second ruler (32) are also provided with abutment plates (7) at their opposite ends.

7. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 6, characterized in that, The abutment plate (7) is provided with arc-shaped plates (72) at both ends, and the arc-shaped plates (72) are bent inward toward the fixed seat (5).

8. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 7, characterized in that, The abutment plate (7) has a sliding groove (71) along its length. The ends of the first ruler (31) and the second ruler (32) that are opposite to each other are threaded with limit posts (8). The limit posts (8) are engaged in the sliding groove (71). The limit posts (8) can slide relative to the length of the sliding groove (71). The sliding groove (71) of the abutment plate (7) is a stepped groove. The diameter of the stepped groove on the side away from the fixed seat (5) is larger than the diameter on the side closer to the fixed seat (5). The far end of the limit post (8) is provided with a limit end (81). The limit end (81) is engaged in the groove with the larger diameter of the stepped groove.

9. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 1, characterized in that, Lighting lamps (9) are provided at the ends of the first rod (1) and the second rod (2) that are far apart from each other.

10. The rapid acceptance tool for the reinforcing steel protective layer of bridge engineering crash barriers according to claim 1, characterized in that, The positioning component (4) includes a positioning bolt (41), the first rod (1) is slidably inserted into the second rod (2), and the positioning bolt (41) is threadedly connected to the second rod (2) and used to abut against the first rod (1).

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