Highway pre-buried pipe manual multi-caliber bending device

Abstract

The utility model discloses a highway pre -buried pipe manual multi -caliber bending device belongs to highway engineering construction technical field, and this device includes main body base, replaceable elbow mould assembly, power assisting operating lever and pipe material clamping subassembly, replaceable elbow mould assembly detachably connected in main body base, contains multiple groups of mould of adapting different calibers, satisfies the bending demand of different specifications pre -buried pipe of highway, and power assisting operating lever reduces the human consumption through lever drive, and pipe material clamping subassembly contains fixed base and adjustable hook, avoids the pipe material misplacement when bending pipe, and the contact part sticks to the anti -skid buffer pad and protects the pipe material surface. The device does not need external power supply, and adapts highway multi -point position dispersed processing, temporary repair and batch bending scene, can realize multi -caliber pre -buried pipe efficient, high quality manual bending, reduces construction cost and operating strength.

Description

Technical Field

[0001] This utility model belongs to the field of highway engineering construction technology, specifically relating to a manual multi-diameter bending device for highway pre-embedded pipes. Background Technology

[0002] In highway construction, the bending of pre-embedded pipes for equipment foundations is a crucial step connecting foundation construction and equipment installation. It requires precise bending based on equipment layout, route alignment, and foundation structural requirements, directly impacting the smoothness of subsequent cable laying and the stability of equipment installation. Currently, the industry mainly uses two types of tools for bending pre-embedded pipes: manual pipe benders and electric / hydraulic pipe benders. Manual pipe benders are widely used in outdoor temporary construction and small-batch processing scenarios due to their flexibility and lack of external power. However, existing manual pipe benders have significant technical shortcomings and cannot meet the construction needs of pre-embedded pipes for highways.

[0003] Specifically, the shortcomings of existing manual pipe benders are mainly reflected in three aspects: First, the lack of multi-diameter adaptability. Existing manual pipe benders are only suitable for small-diameter embedded pipes with a diameter less than DN50. However, in highway engineering, medium-diameter embedded pipes of DN50-DN100 (such as pipes for connecting equipment foundations and cable wells) are widely used. Existing manual pipe benders lack flexible and replaceable adaptable structures and cannot effectively clamp and bend medium-diameter pipes. If forced to use them, it is easy to cause pipe misalignment and bending angle deviation. Second, insufficient labor-saving operation. Most existing manual pipe benders are integrated rigid structures without power-assisted transmission design. When bending medium-diameter pipes, a lot of manual labor is required, which not only increases the labor intensity of operators, but also easily leads to local stress concentration on the pipe due to uneven force application, resulting in pipe wall dents and wrinkles, which cannot meet the appearance quality requirements of embedded pipe bending. Third, the lack of pipe protection design. Galvanized steel pipes are mostly used for pre-buried pipes on highways. The galvanized layer on the surface is the core to ensure long-term corrosion resistance. However, the clamping parts of existing manual pipe benders are mostly rigid metal contact surfaces without buffer protection structures. During the bending process, the galvanized layer is easily scratched, leading to localized corrosion and shortening the service life of the pre-buried pipes.

[0004] Meanwhile, while electric / hydraulic pipe benders can adapt to the bending needs of medium-diameter embedded pipes, they suffer from problems such as inconvenience in carrying, reliance on external power sources, and time-consuming on-site debugging, making it difficult to meet the needs of scenarios such as "multi-point decentralized processing" and "temporary repairs" in highway construction. This situation has led to a dilemma where existing tools are caught in a bind: "manual pipe benders are flexible but have poor adaptability and are prone to damaging materials, while electric / hydraulic pipe benders are highly adaptable but lack flexibility." In highway embedded pipe construction, either manual pipe benders cannot adapt to medium-diameter pipes, forcing the use of electric / hydraulic pipe benders, increasing equipment transportation and debugging costs; or the forced use of manual pipe benders results in pipe damage and rework, seriously affecting construction efficiency and quality. Therefore, there is an urgent need to develop a manual pipe bending device for embedded pipes that combines "multi-diameter adaptability (DN20-DN100), labor-saving manual operation, and pipe protection" to fill the existing technological gap. Utility Model Content

[0005] In view of this, the present invention aims to overcome the shortcomings of the prior art and provide a manual multi-diameter bending device for highway pre-embedded pipes to solve the core problem of existing manual pipe benders in highway pre-embedded pipe construction: it can adapt to pre-embedded pipes of DN20-DN100 commonly used in highway pre-embedded pipe construction (covering small and medium diameter pipes), breaking away from the limitation of existing manual pipe benders that can only adapt to pipe diameters smaller than DN50, and meeting the manual bending needs of pre-embedded pipes of different specifications; through optimized structural design, it reduces manpower consumption in pure manual operation mode, and facilitates flexible operation in multi-point decentralized processing, temporary repair and batch bending scenarios in highway pre-embedded pipe construction, ultimately achieving efficient and high-quality manual bending of highway pre-embedded pipes.

[0006] To achieve the above objectives, this utility model provides a manual multi-diameter bending device for highway pre-buried pipes, comprising: The main base serves to provide overall support; A replaceable pipe bending mold assembly is detachably connected to the upper part of the main body base. The replaceable pipe bending mold assembly includes multiple sets of pipe bending molds adapted to different diameters to meet the bending requirements of different specifications of pre-embedded pipes for highways. The power-assisted operating lever is connected at one end to the main body base, and reduces the manual labor required for bending through lever transmission; The pipe clamping assembly is located on one side of the main body base and includes a fixed seat and an adjustable hook. The fixed seat is used to initially position the embedded pipe, and the adjustable hook is used to assist in fixing the pipe and prevent the embedded pipe from being misaligned during the bending process. By replacing the replaceable pipe bending mold assembly, and in conjunction with the lever transmission of the power-assisted operating rod and the clamping and fixing of the pipe clamping assembly, the pure manual bending of highway pre-buried pipes of different diameters can be achieved.

[0007] Furthermore, the replaceable pipe bending mold assembly is connected to the main body base by a quick-release structure. The inner arc of each set of pipe bending molds corresponds to the bending path of the pre-embedded pipe and is provided with a limiting groove that matches the pre-embedded pipe of the corresponding diameter.

[0008] Furthermore, the lever arm ratio of the assistive operating lever is 1:3-1:4, and one end of the assistive operating lever is provided with a non-slip grip.

[0009] Furthermore, the adjustable hook is a spring-loaded hook that can be adjusted within a 180° range, and the contact area between the adjustable hook and the fixed base is covered with an anti-slip cushioning pad.

[0010] Furthermore, the bottom of the main body base is provided with anti-slip texture, and the main body base is provided with a fixable end for positioning the assist operation lever.

[0011] Furthermore, the pipe bending mold is made of mold steel and its surface is hardened.

[0012] The present invention, by adopting the above technical solution, has at least the following beneficial effects: In this utility model, by setting a replaceable pipe bending mold assembly, it can flexibly adapt to different specifications of pre-embedded pipes in highway construction, get rid of the limitation of existing manual pipe benders that are only suitable for small diameter pipes, and do not require additional electric or hydraulic pipe bending equipment, reducing equipment transportation and debugging costs and meeting diverse manual bending needs. In this utility model, the power-assisted operating lever reduces the manpower consumption of manual bending by means of the lever transmission principle, and the anti-slip handle at the end improves the stability of operation. It can not only reduce the labor intensity of the operator, but also avoid defects such as dents and wrinkles in the pipe due to uneven force, thus ensuring the appearance and dimensional accuracy of the pre-embedded pipe bending. In this utility model, the adjustable hook of the pipe clamping component is covered with an anti-slip buffer pad at the contact point with the fixed seat. This can prevent the rigid metal contact from scratching the galvanized layer on the surface of the embedded pipe (especially galvanized steel pipe), thus protecting the anti-corrosion performance of the pipe. At the same time, the anti-slip texture at the bottom of the main base enhances the stability of the device, making it suitable for multi-point decentralized processing and temporary repairs on highways, thereby improving construction flexibility and efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the structure of the manual multi-diameter bending device for highway pre-buried pipes of this utility model.

[0015] In the diagram: 1. Main base; 2. Replaceable pipe bending mold assembly; 3. Power-assisted operating lever; 4. Fixing seat; 5. Adjustable hook; 6. Pipe bending path; 7. Embedded pipe; 8. Bolt. Detailed Implementation

[0016] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0017] like Figure 1 As shown, this embodiment provides a manual multi-diameter bending device for highway pre-buried pipes, including: a main base 1 for providing overall support; a replaceable bending mold assembly 2, detachably connected to the upper part of the main base 1, which can be fixed by bolts 8 in this embodiment. The replaceable bending mold assembly 2 includes multiple sets of bending molds adapted to different diameters to meet the bending requirements of pre-buried pipes 7 of different specifications for highways; an assistive operating lever 3, one end of which is connected to the main base 1, reducing the manual labor consumption during bending through lever transmission; and a pipe clamping assembly, located on one side of the main base 1, including a fixed seat 4 and an adjustable hook 5. The fixed seat 4 is used for initial positioning of the pre-buried pipe, and the adjustable hook 5 is used to assist in fixing the pipe and prevent misalignment of the pre-buried pipe during bending. By replacing the replaceable bending mold assembly 2, and in conjunction with the lever transmission of the assistive operating lever 3 and the clamping and fixing of the pipe clamping assembly, pure manual bending of highway pre-buried pipes of different diameters can be achieved. In one implementation, the replaceable pipe bending mold assembly 2 and the main body base 1 are connected by a quick-release structure. The inner arc of each pipe bending mold corresponds to the bending path 6 of the pre-embedded pipe and is provided with a limiting groove that matches the pre-embedded pipe of the corresponding diameter. The quick-release structure can significantly shorten the replacement time of the pipe bending mold, and can be disassembled and assembled without the need for complex tools, which is suitable for the scenario of "alternating bending of multiple specifications of pipes" in highway construction. The limiting groove on the inner arc can fit tightly with the outer wall of the pre-embedded pipe, which can limit the lateral displacement of the pipe during bending, avoid the problems of pipe misalignment and bending angle deviation, further ensure bending accuracy, and meet the installation size requirements of the pre-embedded pipe.

[0018] In one embodiment, the lever arm ratio of the assistive operating rod 3 is 1:3-1:4, and one end of the assistive operating rod 3 is provided with a non-slip grip. The lever arm ratio of 1:3-1:4 can significantly reduce the force required for manual bending through the lever principle. Even for pre-embedded pipes of medium diameter, a single person can easily complete the bending operation, greatly reducing the labor intensity of the operator. The non-slip grip at the end can increase the friction between the hand and the operating rod, avoiding hand slippage during construction that could lead to operation interruption or loss of force control, thus improving operational safety and stability. It is especially suitable for outdoor construction environments where the hands are humid and prone to sweating.

[0019] In one embodiment, the adjustable hook 5 is a spring-loaded hook, capable of angle adjustment within a 180° range. The contact points between the adjustable hook 5 and the fixing seat 4 are covered with anti-slip buffer pads. The spring-loaded structure provides the hook with a certain degree of elastic adjustment space; the 180° angle adjustment range can adapt to the fixing requirements of embedded pipes of different lengths and bending positions, avoiding instability caused by the special length of the pipe. The anti-slip buffer pads at the contact points increase friction with the pipe surface, preventing axial sliding of the pipe during bending. Furthermore, they prevent the metal hook from directly contacting the fixing seat 4 with the pipe surface (especially galvanized steel pipes), effectively protecting the galvanized layer from scratch damage, ensuring the corrosion resistance of the embedded pipe, and extending its service life.

[0020] As one implementation method, the bottom of the main base 1 in this embodiment is provided with anti-slip texture, and the main base 1 is provided with a fixable end for positioning the assistive operating rod 3. The anti-slip texture at the bottom can increase the friction between the main base 1 and the construction ground, preventing the device from sliding as a whole due to force during the bending process, and ensuring the stability of the bending operation; the fixable end can fix the operating rod in a specific position when the assistive operating rod 3 is not used or when changing the mold, preventing the operating rod from shaking randomly and affecting the construction, while reducing the occupation of operating space, which is suitable for the scenario of "limited space and multi-tool collaborative operation" in highway construction.

[0021] As one implementation method, the pipe bending mold described in this embodiment is made of mold steel and its surface is hardened. The mold steel material has high strength and wear resistance, and can withstand the extrusion pressure during long-term bending operations, avoiding mold deformation; the surface hardening treatment can further improve the hardness and wear resistance of the mold surface, reduce frictional wear between the pipe and the mold during bending, extend the service life of the mold, and reduce the mold replacement cost during long-term construction, which is especially suitable for the needs of batch bending of pre-buried pipes for highways.

[0022] This embodiment achieves four core advantages through targeted design of the replaceable pipe bending mold assembly 2, the power-assisted operating lever 3, the pipe clamping assembly, the main base 1, and the pipe bending mold material: "multi-diameter adaptation, manual labor saving, pipe protection, and scenario adaptation". The quick-release mold and the limiting groove ensure accurate bending of multiple specifications of pipes; the reasonable lever arm ratio and the anti-slip grip reduce the intensity of operation; the spring-type hook and the buffer pad protect the anti-corrosion layer of the pipe; the anti-slip texture and the fixed end improve the stability of the device; the mold steel and hardening treatment extend the service life of the equipment. The synergistic effect of each structure effectively solves the technical defects of existing manual pipe benders.

[0023] In use, first, according to the diameter of the pre-embedded pipe to be bent, change to the corresponding pipe bending mold through the quick-release structure; place one end of the pre-embedded pipe into the fixed seat 4 for positioning, adjust the spring-type hook to a suitable angle and clamp the pipe to prevent pipe displacement; the operator holds the non-slip handle of the power operation lever 3 and applies force with the help of lever transmission to bend the pipe along the arc path of the pipe bending mold; after bending is completed, release the hook and take out the pipe. If other specifications of pipe need to be bent, repeat the above mold replacement and clamping bending steps.

[0024] This device is suitable for various scenarios in the construction of pre-embedded pipes for highway equipment foundations, including: on-site bending of pre-embedded pipes for equipment foundations along highways (such as monitoring equipment and communication equipment foundations), temporary repair bending caused by design adjustments during construction, and decentralized processing of small batches of multi-specification pre-embedded pipes (such as pipes for connecting cable wells in different road sections). It is especially suitable for outdoor scenarios without external power supply and with dispersed construction sites, and can effectively improve the efficiency and quality of manual bending of pre-embedded pipes.

[0025] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A manual multi-diameter bending device for pre-buried pipes in highways, characterized in that, include: The main base serves to provide overall support; A replaceable pipe bending mold assembly is detachably connected to the upper part of the main body base. The replaceable pipe bending mold assembly includes multiple sets of pipe bending molds adapted to different diameters to meet the bending requirements of different specifications of pre-embedded pipes for highways. The power-assisted operating lever is connected to the main body base at one end, and reduces the manual labor required when bending manually through lever transmission. The pipe clamping assembly is located on one side of the main body base and includes a fixed seat and an adjustable hook. The fixed seat is used to initially position the embedded pipe, and the adjustable hook is used to assist in fixing the pipe and prevent the embedded pipe from being misaligned during the bending process. By replacing the replaceable pipe bending mold assembly, and in conjunction with the lever transmission of the power-assisted operating rod and the clamping and fixing of the pipe clamping assembly, the pure manual bending of highway pre-buried pipes of different diameters can be achieved.

2. The manual multi-diameter bending device for highway pre-embedded pipes according to claim 1, characterized in that, The replaceable pipe bending mold assembly is connected to the main body base by a quick-release structure. The inner arc of each set of pipe bending molds corresponds to the bending path of the pre-embedded pipe and is provided with a limiting groove that matches the pre-embedded pipe of the corresponding diameter.

3. The manual multi-diameter bending device for highway pre-embedded pipes according to claim 1, characterized in that, The lever arm ratio of the power assist lever is 1:3-1:4, and one end of the power assist lever is provided with a non-slip grip.

4. The manual multi-diameter bending device for highway pre-embedded pipes according to claim 1, characterized in that, The adjustable hook is a spring-loaded hook that can be adjusted within a 180° range, and the contact area between the adjustable hook and the fixed base is covered with an anti-slip cushioning pad.

5. The manual multi-diameter bending device for highway pre-embedded pipes according to claim 1, characterized in that, The bottom of the main body base is provided with anti-slip texture, and the main body base is provided with a fixable end for positioning the power assist lever.

6. The manual multi-diameter bending device for highway pre-embedded pipes according to claim 2, characterized in that, The pipe bending mold is made of mold steel and its surface is hardened.

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