High efficiency straightening simple device for anchor bolts

Abstract

The utility model discloses a simple device is straightened to high efficiency for anchor bolt relates to anchor bolt straightening technical field. It includes handle and tool head, and the tool head contains two symmetrical inclined pull beam, two symmetrical bottom push beam and upper crossbeam, lower crossbeam, upper crossbeam and inclined pull beam integral bending form upper straightening and pressing face (resist and press bolt outside), and lower crossbeam and bottom push beam integral bending form lower straightening and pressing face (resist and press bolt inside), and the clamping gap is established to the inclined pull beam, bottom push beam near tool head end, handle and inclined pull beam, bottom push beam are fixed through 100mm lap joint welding, and each component adopts HRB400phi25 reinforcing bar and makes, and when the force is applied to handle, upper crossbeam generates the tension, and lower crossbeam generates the thrust, and the cooperation realizes straightening. The device does not need external power supply, is portable and environmental protection, can solve the poor portability of existing device, the problem of violent straightening and damage bolt.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically to a simple and efficient straightening device for anchor bolts. Background Technology

[0002] Currently, anchor bolt straightening largely relies on existing specialized devices. For example, a patent search and analysis system of the State Intellectual Property Office yielded a "Straightening Device for Anchor Bolts" (application number: CN202310503900.7). This device includes a base plate, a rotating mechanism, and a bending mechanism. The rotating mechanism requires a drive motor to control the anchor bolt rotation for straightening. The entire device is made of steel and relies on an external power source. Because such devices require an external power source, their portability and mobility in the field are limited, making them unsuitable for the anchor bolt straightening needs of different construction scenarios.

[0003] Meanwhile, anchor bolts are prone to slight bending during the backfilling of independent foundations. Current methods often involve "forceful straightening," which damages the anchor bolts, severely impacting the construction period and requiring remedial measures such as rebar replacement. This increases construction costs and fails to utilize surplus rebar generated during construction, contradicting the green construction concept of "turning waste into treasure" and exhibiting significant technical flaws. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and efficient straightening device for anchor bolts, solving the problems of existing reinforcement devices being unsuitable for utility poles, requiring high-altitude operations for installation (dangerous and inconvenient), and lacking a special reinforcement solution for extreme weather conditions for the JQGs110t-30m bridge erecting machine. This simple and efficient straightening device for anchor bolts addresses the reinforcement needs of the bridge erecting machine in non-working states and in extreme weather conditions of level 10 and below, eliminating the risks of high-altitude operations, achieving safe and quick reinforcement, and ensuring the safety and stability of the bridge erecting machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a simple and efficient straightening device for anchor bolts, comprising a handle and a tool head; the tool head is composed of a diagonal beam, an upper crossbeam, a bottom push beam, and a lower crossbeam; two diagonal beams and two bottom push beams are symmetrically arranged; the upper crossbeam is connected to the two diagonal beams to form an upper straightening pressing surface for pressing against the outer side of the anchor bolt; the lower crossbeam is connected to the two bottom pull beams to form a lower straightening pressing surface for pressing against the inner side of the anchor bolt; the handle is fixedly connected to the diagonal beams and bottom push beams of the tool head, and the whole device is used for straightening anchor bolts.

[0006] To further optimize this utility model, the following technical solutions may be preferred: Preferably, all components of the handle and tool head are made of HRB400φ25 steel bars.

[0007] Preferably, the handle is connected to the inclined beam and the bottom push beam by lap welding, and the connection between the various components of the tool head is also by lap welding.

[0008] Preferably, the weld length of the lap weld is 100mm.

[0009] Preferably, the upper and lower crossbeams are distributed vertically in the tool head. When a downward force is applied to the end of the handle, the upper crossbeam can generate a backward pulling force on the anchor bolt, and the lower crossbeam can generate a forward pushing force on the anchor bolt. The anchor bolt is straightened by the combination of the pulling and pushing forces.

[0010] Preferably, the upper crossbeam and the diagonal tie beam are integrally bent and formed, and the lower crossbeam and the bottom push beam are integrally bent and formed, with clamping gaps provided at the ends of the two diagonal tie beams and the two bottom push beams near the tool head.

[0011] Compared with the prior art, this utility model has the following significant advantages: 1. Excellent portability and adaptability to multiple operating scenarios: This device does not require an external power supply. It achieves straightening by manually applying force in conjunction with the lever principle, completely eliminating the limitations of power supply location and access cable length. It can be flexibly moved and operated on the construction site, effectively adapting to the anchor bolt straightening needs in different construction environments, and solving the pain point of poor portability of existing devices.

[0012] 2. Energy-saving, environmentally friendly and low-cost: All components of the device are made from leftover HRB400φ25 steel bars generated on the construction site, realizing the recycling of construction waste and truly practicing the green construction concept of "turning waste into treasure". At the same time, it greatly reduces the manufacturing cost of the device and avoids material waste.

[0013] 3. Stable and reliable structure with high straightening accuracy: The upper crossbeam and the diagonal tie beam, as well as the lower crossbeam and the bottom push beam, are formed by an integrated bending process, combined with a lap welding connection with a 100mm weld seam, ensuring the strength and stability of the overall structure of the device; the symmetrical design of the two diagonal tie beams and the bottom push beam, as well as the setting of the clamping gap, can accurately press against the inner and outer sides of the anchor bolts, improving the accuracy of the straightening operation.

[0014] 4. Protect bolt performance and ensure construction efficiency: Straightening is achieved through the synergistic effect of the upper crossbeam tension and the lower crossbeam thrust, avoiding the damage to the mechanical properties of anchor bolts caused by traditional "violent straightening". There is no need to use remedial solutions such as rebar replacement, which effectively shortens the construction period, reduces construction costs, and ensures project quality. Attached Figure Description

[0015] Figure 1 Design drawing for a simple, efficient straightening device; Figure 2 is a top view of the simple, high-efficiency straightening device.

[0016] Among them, 1-handle; 2-diagonal tie beam; 3-upper crossbeam; 4-weld; 5-tool head; 6-anchor bolt; 7-foundation top surface elevation; 8-lower crossbeam; 9-bottom push beam. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0019] Example 1; like Figure 1 , 2 As shown, a simple and efficient straightening device for anchor bolts includes a handle 1 and a tool head 5. The tool head 5 is composed of a diagonal tie beam 2, an upper crossbeam 3, a bottom push beam 9, and a lower crossbeam 8. Two diagonal tie beams and two bottom push beams are symmetrically arranged. The upper crossbeam is connected to the two diagonal tie beams to form an upper straightening pressing surface, which is used to press against the outer side of the anchor bolt. The lower crossbeam is connected to the two bottom tie beams to form a lower straightening pressing surface, which is used to press against the inner side of the anchor bolt 6. The handle is fixedly connected to the diagonal tie beams and bottom push beams of the tool head. The whole device is used for straightening anchor bolts. The diagonal tie beams and bottom push beams are both arranged symmetrically. With the upper straightening pressing surface formed by the upper crossbeam and the lower straightening pressing surface formed by the lower crossbeam, the device can accurately clamp and position the anchor bolt from the inside and outside, ensuring the accuracy of the straightening force application point and avoiding straightening errors caused by force deviation.

[0020] In a preferred embodiment, all parts of the handle and tool head are made of HRB400φ25 steel bars.

[0021] In a preferred embodiment, the handle is connected to the inclined beam and the bottom push beam by lap welding, and the connection between the various parts of the tool head is also by lap welding.

[0022] As a preferred embodiment, the length of the lap weld 4 is 100mm. The lap weld connection method is uniformly adopted, and the weld length is standardized to 100mm. This not only ensures the firmness of the connection of each component, but also facilitates on-site processing and manufacturing. At the same time, it meets the steel structure design standards, avoids problems such as loosening and breakage of the connection during long-term use, and extends the service life of the device.

[0023] As a preferred embodiment, the upper and lower crossbeams are distributed vertically within the tool head. When a downward force is applied to the end of the handle, the upper crossbeam generates a backward pulling force on the anchor bolt, while the lower crossbeam generates a forward pushing force on the anchor bolt. The anchor bolt is straightened through the combination of pulling and pushing forces. This replaces the traditional crude method of "forceful straightening," allowing for precise control of the straightening force and preventing damage to the mechanical properties of the anchor bolt due to excessive force. It also eliminates the need for subsequent rebar replacement, effectively shortening the construction period and ensuring project quality.

[0024] As a preferred embodiment, the upper crossbeam and the diagonal tie beam are integrally bent and formed, and the lower crossbeam and the bottom push beam are integrally bent and formed. Clamping gaps are provided at the ends of the two diagonal tie beams and the two bottom push beams near the tool head. Compared with the spliced ​​structure, this effectively reduces stress concentration at the connection nodes, enhances the overall rigidity and load-bearing capacity of the tool head, and avoids the straightening effect being affected by structural deformation during the straightening process.

[0025] Based on the above technical solution, the actual application scenarios of this device are as follows: I. Structure and Fabrication of the Device This utility model describes a simple and efficient straightening device for anchor bolts. The core assembly consists of a handle and a tool head. All components are made from leftover HRB400φ25 steel reinforcement bars generated during the construction of short foundation columns at the construction site, achieving the recycling of construction waste. The tool head is manufactured strictly according to the principle of symmetrical design: two diagonal tie beams and two bottom push beams are symmetrically arranged. The upper crossbeam and the two diagonal tie beams are integrally bent to form an upper straightening pressing surface that can tightly press against the outside of the anchor bolt; the lower crossbeam and the two bottom push beams are also integrally bent to form a lower straightening pressing surface that fits and presses against the inside of the anchor bolt. Simultaneously, a clamping gap is reserved at the end of the two diagonal tie beams and the two bottom push beams near the tool head. This gap size is designed according to the diameter specifications of common anchor bolts to ensure accurate clamping of different types of anchor bolts. The connection between the handle and the tool head, as well as the assembly between the various parts of the tool head, are all done by lap welding. E50 type welding rods are used in the welding process, and the length of all welds is uniformly controlled to 100mm. The welding process must strictly comply with the relevant requirements of "GB50017-2017 Steel Structure Design Standard" and "20G112-2 Commonly Used Data for Building Structure Design (Steel Structure and Composite Structure)" to ensure the stability and mechanical performance of the overall structure of the device.

[0026] II. Operating Procedures for the Device 1. Pre-treatment: First, thoroughly clean the top surface of the foundation at elevation 7 where the anchor bolts are located, removing surface dust, debris and loose concrete; use a total station to measure and lay out, accurately marking the bending area of ​​the anchor bolts; then, locally chisel away the foundation parts corresponding to the bending area to fully expose the anchor bolts in the bending section, facilitating subsequent straightening work.

[0027] 2. Heating the Bending Area: Using an oxy-acetylene torch as the heating tool, after adjusting the flame to a neutral flame, the marked bending area is heated uniformly and repeatedly. During the heating process, a designated person uses a handheld infrared thermometer to monitor the temperature of the heated area in real time, ensuring that the temperature is stably controlled at around 800℃, and strictly prohibiting it from exceeding 900℃. This is to prevent the steel from overheating and causing coarse grains, which would affect the mechanical properties of the anchor bolts. At the same time, it is necessary to ensure uniform heating so that the bolt core also reaches the predetermined temperature.

[0028] 3. On-site straightening operation: Once the temperature of the bent section of the anchor bolt reaches the preset standard, immediately align the clamping gap of the tool head with the bent section, ensuring the upper straightening pressing surface is in close contact with the outer side of the anchor bolt and the lower straightening pressing surface is in contact with the inner side. The operator applies a downward force to the end of the handle. Utilizing the lever principle, the upper crossbeam generates a backward pulling force on the anchor bolt, while the lower crossbeam simultaneously generates a forward pushing force. These two forces work together on the bent section. During the straightening process, the surveyor continuously monitors the anchor bolt axis in real time using a total station, dynamically guiding the operator to adjust the direction and intensity of the force application. This ensures the straightening operation is completed in one go while the bolt is still hot; repeatedly bending the bolt at high temperatures is strictly prohibited.

[0029] 4. Subsequent Maintenance and Inspection: After straightening is completed, the anchor bolts should be promptly insulated and allowed to cool slowly to prevent new stress damage caused by sudden temperature drops. After curing, the anchor bolts should be subjected to non-destructive testing according to engineering quality inspection standards. Only after confirming that their mechanical properties and straightness meet construction requirements can subsequent construction procedures proceed. This device, through its simple structural design and manual operation mode, completely eliminates the dependence on external power sources, making it highly portable. It also effectively avoids the drawbacks of traditional "forceful straightening," reducing costs while ensuring construction quality, and possesses significant engineering practical value.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A simple and efficient straightening device for anchor bolts, characterized in that, It includes a handle and a tool head; the tool head is composed of a diagonal tie beam, an upper crossbeam, a bottom push beam, and a lower crossbeam; there are two diagonal tie beams and two bottom push beams symmetrically arranged; the upper crossbeam is connected to the two diagonal tie beams to form an upper straightening pressing surface, which is used to press against the outer side of the anchor bolt; the lower crossbeam is connected to the two bottom tie beams to form a lower straightening pressing surface, which is used to press against the inner side of the anchor bolt; the handle is fixedly connected to the diagonal tie beam and the bottom push beam of the tool head, and the whole is used for the straightening operation of the anchor bolt.

2. The simple and efficient straightening device for anchor bolts according to claim 1, characterized in that, All components of the handle and tool head are made of HRB400φ25 steel bars.

3. The simple and efficient straightening device for anchor bolts according to claim 1, characterized in that, The handle is connected to the inclined beam and the bottom push beam by lap welding, and the connection between the various parts of the tool head is also by lap welding.

4. The simple and efficient straightening device for anchor bolts according to claim 3, characterized in that, The weld length of each lap weld is 100mm.

5. The simple and efficient straightening device for anchor bolts according to claim 1, characterized in that, The upper and lower crossbeams are distributed vertically in the tool head. When a downward force is applied to the end of the handle, the upper crossbeam can generate a backward pulling force on the anchor bolt, and the lower crossbeam can generate a forward pushing force on the anchor bolt. The anchor bolt is straightened by the combination of the pulling and pushing forces.

6. The simple and efficient straightening device for anchor bolts according to claim 1, characterized in that, The upper crossbeam and the diagonal tie beam are integrally bent and formed, and the lower crossbeam and the bottom push beam are integrally bent and formed. The two diagonal tie beams and the two bottom push beams are provided with clamping gaps near the tool head.

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