A hand bending tool

Abstract

The utility model discloses a manual bending tool, including gland, tail fixed gland channel steel, fixed bolt, support, bottom plate, base, flap handle, flap, compression device, handle, head fixed gland and hinge etc, and compression device is through the compression gland of nut and screw rod, can firmly fix the material to be bent, ensures the stable material in the bending process, and the bending can be realized by the rotation of flap around hinge, and the bending angle range is 0 to 135 degrees, and the longest bending material length is 1300mm, and the bending length can be adjusted according to actual needs, the utility model discloses adopt galvanized material and stainless steel hinge, has good anticorrosive property and service life, is applicable to the complex environment of construction site. The utility model discloses simple, efficient, portable, can complete the bending task of metal sheet in construction site fast and accurately, significantly reduces the construction cost, improves work efficiency, satisfies the production demand such as heat preservation edge sealing, pipeline hoop.

Description

Technical Field

[0001] This utility model relates to a manual bending tool, which is particularly suitable for bending metal sheets on construction sites and is used to make insulation edge sealing and pipe clamps, etc. Background Technology

[0002] In construction sites, industrial installations, and other similar projects, metal sheets often need to be bent to meet requirements for insulation sealing, pipe clamps, and other applications. However, traditional bending methods primarily rely on large bending machines or manual hammering. While large bending machines offer high bending precision, they are expensive, bulky, and inconvenient to use on-site. Manual hammering, on the other hand, is inefficient, makes it difficult to guarantee bending accuracy, and fails to meet construction quality requirements.

[0003] Especially at some remote project sites, such as the Hwange Phase III expansion project in Zimbabwe, procuring specialized processing materials and professional bending equipment is not only costly, but also faces long procurement cycles and difficulties in timely acquisition due to remote locations and inconvenient transportation. This poses a significant challenge to the project's construction progress and seriously affects the overall schedule and quality of the project.

[0004] During the execution of the EPC contract for the Hwange Phase III Expansion Project in Zimbabwe, a manual bending tool was urgently needed for the fabrication of insulation sealing and pipe clamps for the desulfurization system. To reduce the cost of purchasing special processing materials from manufacturers and lower the project's tool procurement costs, while ensuring quality, and to quickly and effectively solve the problems of bending 90-degree insulation sealing and pipe clamps, the Hwange Phase III Project team, in collaboration with the Huilong Construction Area, researched, developed, and manufactured this new type of manual bending tool. This tool needs to be simple, efficient, and portable, enabling it to quickly and accurately complete bending tasks on the construction site, thereby reducing construction costs, improving work efficiency, and meeting the urgent needs of the project. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a simple, efficient and portable manual bending tool that can quickly and accurately complete the bending of metal sheets on the construction site, reduce construction costs and improve work efficiency.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] A manual bending tool includes a pressure cap, a tail-end fixed pressure cap channel steel, fixing bolts, a bracket, a base plate, a base, a flip-plate handle, a flip plate, a clamping device, a handle, a head-end fixed pressure cap, and a hinge.

[0008] The gland is made of galvanized angle steel with a diameter of 1300mm × 76mm × 6mm;

[0009] The tail fixing cover channel steel is made of galvanized channel steel with dimensions of 280mm×63mm×40mm×4.8mm, and is welded to the cover. Two round holes with a diameter of 14mm are opened on the side.

[0010] The fixing bolts are two galvanized bolts of 100mm×12mm×1.75mm, which pass through the round holes of the tail fixing gland channel steel and are welded to the bracket.

[0011] The support frame consists of four galvanized channel steels of 60mm×63mm×40mm×4.8mm, two at the beginning and two at the end, which are welded to the base plate and the tail fixing cover channel steel respectively; the base plate is made of galvanized channel steel of 1500mm×120mm×53mm×5mm and is welded to the base.

[0012] The base includes two upper galvanized angle steels, four support legs, two lower longitudinal galvanized angle steels, and two lower transverse galvanized angle steels, with dimensions of 275mm×50mm×5mm, 500mm×50mm×5mm, 400mm×50mm×5mm, and 1555mm×50mm×5mm, respectively.

[0013] The flap is made of 1300mm×76mm×6mm galvanized angle steel and is connected to the base plate by hinges; the flap handle is made of two 350mm×33.5mm×2.5mm galvanized steel pipes and is welded to the flap.

[0014] The hinge consists of a 10mm×1.5mm stainless steel tube and an inserted 6mm round steel bar, which is welded between the flap and the base plate to ensure the flap can rotate flexibly.

[0015] The clamping device includes a horizontal handle, a first longitudinal handle connector, a second longitudinal handle connector, a third longitudinal handle connector, an M25×1.5 nut and a screw, and a rotating connecting bolt. The clamping device clamps the cover by means of the M25 nut and the screw.

[0016] The handle is made of 180mm×60mm×30mm×2mm galvanized flat iron and is welded to the head fixing cover; the head fixing cover is made of 280mm×63mm×40mm×4.8mm galvanized channel steel, with a 35mm×26mm×4.8mm groove on the upper side near the clamping device and two 14mm diameter openings on the side near the cover.

[0017] Preferably, the transverse handle is made of galvanized steel pipe of 75mm×33.5mm×2.5mm; the first longitudinal handle connector is made of galvanized steel pipe of 60mm×33.5mm×2.5mm; the second longitudinal handle connector is an M25×1.5 nut with an outer diameter of 34mm; the third longitudinal handle connector is a 100mm×25mm×1.5mm threaded rod; the swivel connecting bolt is a 100mm×12mm×1.75mm galvanized bolt, and the swivel connecting bolt is welded to the bracket; the transverse handle is welded to the first longitudinal handle connector, the first longitudinal handle connector is welded to the second longitudinal handle connector, the third longitudinal handle connector is welded to the swivel connecting bolt, and the swivel connecting bolt is welded to the bracket.

[0018] Preferably, the manual bending tool can bend angles ranging from 0 degrees to 135 degrees, with a maximum bending material length of 1300 mm, and the bending length can be adjusted according to actual needs.

[0019] Preferably, the gland, the tail fixing gland channel steel, the bracket, the base plate, the base, the flip plate, and the head fixing gland are all made of galvanized material, which has good corrosion resistance and is suitable for the complex environment of the construction site.

[0020] Preferably, the hinge is made of stainless steel tube and round steel to ensure flexible rotation of the flap and improve the service life and reliability of the tool.

[0021] Preferably, the clamping device uses an M25 nut and screw to clamp the cover, which can firmly fix the material to be bent, ensure material stability during bending, and improve bending accuracy.

[0022] In use, place a metal sheet with a thickness of no more than 3mm that needs to be bent between the pressure cap and the base. After measuring the bending length, rotate the handle of the clamping device to tighten the pressure cap using the M25 nut and screw, thus fixing the material. Then, by lifting the flip handle 10, the flip plate 11 rotates around the hinge 19, thereby achieving the bending of the material. This manual bending tool can bend angles from 0 degrees to 135 degrees, with a maximum bending material length of 1300mm. The bending length can be adjusted according to actual needs. Through the above operation method, this utility model can improve the accuracy and efficiency of manual bending, reduce the input of materials and tools, and solve urgent problems on the engineering site.

[0023] The positive and beneficial effects of this utility model are as follows:

[0024] 1. Simple materials and low cost: This utility model mainly uses galvanized angle steel, channel steel and other materials commonly found on construction sites, and can reuse waste materials, which reduces the production cost.

[0025] 2. High efficiency and portability: This utility model improves the efficiency of producing thermal insulation sealing materials, pipe clamps, etc., and is especially suitable for two people to work together, further improving work efficiency; this utility model has a compact structure, making it easy to carry and operate on site.

[0026] 3. Strong applicability: The bending angle of this utility model has a wide adjustable range (0 degrees to 135 degrees), which can be flexibly adjusted according to the actual needs on site, making it highly applicable; the longest bending material length can reach 1300mm, and the width is adjustable to meet the bending needs of materials of various sizes.

[0027] 4. Good corrosion resistance: The pressure cap, tail fixing pressure cap channel steel, bracket, base plate, base, flip plate, head fixing pressure cap and other components of this utility model are all made of galvanized material, which has good corrosion resistance and is suitable for complex environments on construction sites.

[0028] 5. Long service life: The hinge of this utility model is made of stainless steel tube and round steel, which ensures the flexible rotation of the flip plate and improves the service life and reliability of the tool.

[0029] 6. Easy to operate: The clamping device of this utility model can firmly fix the material to be bent by clamping the cover with an M25 nut and screw, ensuring the stability of the material during the bending process and improving the bending accuracy; the bending length can be adjusted according to the actual needs on site, further improving the versatility and practicality of the tool. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] In the diagram, 1--gland, 2--tail fixing gland channel steel, 3--fixing bolt, 4--bracket, 5--base plate, 6--upper galvanized angle steel, 7--support leg, 8--lower longitudinal galvanized angle steel, 9--lower transverse galvanized angle steel, 10--flip handle, 11--flip, 12--transverse handle, 13--first longitudinal handle connector, 14--second longitudinal handle connector, 15--third longitudinal handle connector, 16--rotatable connecting bolt, 17--handle, 18--head fixing gland, 19--hinge. Detailed Implementation

[0032] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments:

[0033] Example 1: See Figure 1 A manual bending tool includes a pressure cap 1, a tail-fixed pressure cap channel steel 2, a fixing bolt 3, a bracket 4, a base plate 5, a base, a flip-plate handle 10, a flip plate 11, a clamping device, a handle 17, a head-fixed pressure cap 18, and a hinge 19.

[0034] The pressure cap 1 is made of galvanized angle steel with a diameter of 1300mm×76mm×6mm; the tail fixing pressure cap channel steel 2 is made of galvanized channel steel with a diameter of 280mm×63mm×40mm×4.8mm, and is welded to the pressure cap 1, with two round holes with a diameter of 14mm on the side.

[0035] The fixing bolts 3 are two 100mm×12mm×1.75mm galvanized bolts, which pass through the round holes of the tail fixing cap channel steel 2 and are welded to the bracket 4; the bracket 4 is composed of four 60mm×63mm×40mm×4.8mm galvanized channel steels, two at the beginning and two at the end, which are welded to the base plate 5 and the tail fixing cap channel steel 2 respectively; the base plate 5 is made of 1500mm×120mm×53mm×5mm galvanized channel steel and is welded to the base 6;

[0036] The base includes two upper galvanized angle steels, four support legs, two lower longitudinal galvanized angle steels, and two lower transverse galvanized angle steels, with dimensions of 275mm×50mm×5mm, 500mm×50mm×5mm, 400mm×50mm×5mm, and 1555mm×50mm×5mm, respectively.

[0037] The flap 11 is made of 1300mm×76mm×6mm galvanized angle steel and is connected to the base plate 5 by hinge 19; the flap handle 10 is made of two 350mm×33.5mm×2.5mm galvanized steel pipes and is welded to the flap 11.

[0038] The hinge 19 is composed of a 10mm×1.5mm stainless steel tube and an inserted 6mm round steel, and is welded between the flip plate 11 and the base plate 5 to ensure the flexible rotation of the flip plate 11.

[0039] The clamping device includes a horizontal handle 12, a first longitudinal handle connector 13, a second longitudinal handle connector 14, a third longitudinal handle connector 15, an M25×1.5 nut and screw, and a rotating connecting bolt 16. The clamping device clamps the cover 1 with the M25 nut and screw.

[0040] The handle 17 is made of galvanized flat iron of 180mm×60mm×30mm×2mm and is welded to the head fixing cover 18; the head fixing cover 18 is made of galvanized channel steel of 280mm×63mm×40mm×4.8mm, with a 35mm×26mm×4.8mm groove on the upper side near the pressing device and two 14mm diameter openings on the side near the cover 1.

[0041] The transverse handle 12 is made of galvanized steel pipe with dimensions of 75mm×33.5mm×2.5mm; the first longitudinal handle connector 13 is made of galvanized steel pipe with dimensions of 60mm×33.5mm×2.5mm; the second longitudinal handle connector 14 is an M25×1.5 nut with an outer diameter of 34mm; the third longitudinal handle connector 15 is a 100mm×25mm×1.5mm threaded rod; and the rotating connecting bolt 16 is a 100mm×12mm×1.75mm galvanized bolt. Specifically, the rotating connecting bolt 16 is welded to the bracket 4; the transverse handle 12 is welded to the first longitudinal handle connector 13; the first longitudinal handle connector 13 is welded to the second longitudinal handle connector 14; the third longitudinal handle connector 15 is welded to the rotating connecting bolt 16; and the rotating connecting bolt 16 is welded to the bracket 4.

[0042] The manual bending tool can bend angles from 0 to 135 degrees, with a maximum bending material length of 1300 mm. The bending length can be adjusted according to actual needs.

[0043] The pressure cap 1, the tail fixing pressure cap channel steel 2, the bracket 4, the base plate 5, the base, the flip plate 11, and the head fixing pressure cap 18 are all made of galvanized material, which has good anti-corrosion performance and is suitable for the complex environment of the construction site.

[0044] The hinge 19 is made of stainless steel tube and round steel to ensure the flexible rotation of the flip plate 11 and improve the service life and reliability of the tool.

[0045] The clamping device clamps the cover 1 with an M25 nut and screw, which can firmly fix the material to be bent, ensure the stability of the material during the bending process, and improve the bending accuracy.

[0046] Example 2 (Specific Application Example): A Manual Bending Tool

[0047] A. Component processing and assembly:

[0048] (I) Material Preparation: Based on the design requirements, the following materials shall be selected:

[0049] A galvanized angle steel of 1300mm×76mm×6mm is used for cap 1;

[0050] A galvanized channel steel of 280mm×63mm×40mm×4.8mm is used for fixing the tail cap channel steel 2;

[0051] A galvanized bolt measuring 100mm × 12mm × 1.75mm is used to fix bolt 3;

[0052] Galvanized channel steel of 60mm×63mm×40mm×4.8mm is used for bracket 4;

[0053] Galvanized channel steel of 1500mm×210mm×53mm×5mm is used for base plate 5;

[0054] Galvanized angle steel of 275mm×50mm×5mm, 500mm×50mm×5mm, 400mm×50mm×5mm and 1555mm×50mm×5mm is used for the upper angle steel 6, the support leg 7, the lower longitudinal angle steel 8 and the lower transverse angle steel 9 of the base.

[0055] A galvanized steel pipe measuring 350mm × 33.5mm × 2.5mm is used for the flip handle 10;

[0056] 10mm x 1.5mm stainless steel tubing and 6mm round steel are used for hinge 19;

[0057] Galvanized steel pipes of 75mm×33.5mm×2.5mm and 60mm×33.5mm×2.5mm are used for the transverse handle 12 and the first longitudinal handle connector 13 of the clamping device;

[0058] An M25×1.5 nut is used for the second longitudinal handle connector 14 of the clamping device;

[0059] A 100mm×25mm×1.5mm screw is used for the third longitudinal handle connector 15 of the clamping device;

[0060] Galvanized bolts of 100mm×12mm×1.75mm are used for the rotary connection bolts 16 of the clamping device;

[0061] 180mm×60mm×30mm×2mm galvanized flat iron is used for handle 17;

[0062] A galvanized channel steel measuring 280mm×63mm×40mm×4.8mm is used for the head fixing cap 18.

[0063] (ii) Component processing:

[0064] Cap 1: Cut galvanized angle steel of 1300mm×76mm×6mm into the required length;

[0065] Tail-end fixing cap channel steel 2: Cut galvanized channel steel of 280mm×63mm×40mm×4.8mm into the required size, and process two round holes with a diameter of 14mm on its side.

[0066] Fixing bolt 3: Prepare two galvanized bolts, each 100mm × 12mm × 1.75mm.

[0067] Bracket 4: Cut four galvanized channel steels (60mm×63mm×40mm×4.8mm) to the required size;

[0068] Base plate 5: Cut the galvanized channel steel of 1500mm×120mm×53mm×5mm into the required size;

[0069] Base: Cut two 275mm×50mm×5mm galvanized angle steels into upper angle steel 4; cut four 500mm×50mm×5mm galvanized angle steels into support legs 7; cut two 400mm×50mm×5mm galvanized angle steels into lower longitudinal angle steel 8; cut two 1555mm×50mm×5mm galvanized angle steels into lower transverse angle steel 9;

[0070] Flip panel 11: Cut galvanized angle steel of 1300mm×76mm×6mm into the required size;

[0071] Flip handle 10: Cut two galvanized steel pipes of 350mm×33.5mm×2.5mm to the required size;

[0072] Hinge 19: Cut a 10mm × 1.5mm stainless steel tube to the required length, insert a 6mm round steel bar into it, and weld it in place;

[0073] Clamping device: Cut a galvanized steel pipe of 75mm×33.5mm×2.5mm into a horizontal handle 12; cut a galvanized steel pipe of 60mm×33.5mm×2.5mm into a first longitudinal handle connector 13; prepare an M25×1.5 nut as a second longitudinal handle connector 14; prepare a 100mm×25mm×1.5mm screw as a third longitudinal handle connector 15; cut a galvanized bolt of 100mm×12mm×1.75mm into a swivel connecting bolt 16;

[0074] Handle 17: Cut galvanized flat iron of 180mm×60mm×30mm×2mm into the required size;

[0075] Head fixing cap 18: Cut a galvanized channel steel of 280mm×63mm×40mm×4.8mm to the required size, and process a 35mm×26mm×4.8mm groove on the upper side near the clamping device, and process two openings with a diameter of 14mm on the side near the cap 1.

[0076] (III) Component Assembly:

[0077] (1) Connection between tail fixing gland channel steel 2 and gland 1: Weld the tail fixing gland channel steel 2 to the gland 1 to ensure a firm weld.

[0078] (2) Installation of fixing bolts 3: Pass the two fixing bolts 3 through the round holes of the tail fixing cover channel steel 2 respectively, and weld them to the bracket 4 so that the tail fixing cover channel steel 2 is connected and fixed to the bracket 4.

[0079] (3) Connection between bracket 4 and base plate 5: Weld the four brackets 4 to the base plate 5 and the tail fixing pressure channel steel 2 respectively to form a stable support structure;

[0080] (4) Assembly of the base: Weld two upper angle steels 6 to four support legs 7 to form the upper structure of the base; weld two lower longitudinal angle steels 8 to two lower transverse angle steels 9 to form the lower structure of the base; weld the upper structure and the lower structure of the base together to form a complete base.

[0081] (5) Connection between base plate 5 and base: Weld base plate 5 to base to make the bottom of the whole device firmly supported;

[0082] (6) Connection between flap 11 and base plate 5: Weld hinge 19 between flap 11 and base plate 5 so that flap 11 can rotate flexibly around the hinge;

[0083] (7) Installation of flap handle 10: Weld the two flap handles 10 to the flap 11 to ensure that the welding is firm and that the operator can operate the flap.

[0084] (8) Assembly of the clamping device: Weld the transverse handle 12 to the first longitudinal handle connector 13; weld the first longitudinal handle connector 13 to the second longitudinal handle connector 14; weld the third longitudinal handle connector 15 to the rotary connecting bolt 16; weld the rotary connecting bolt 16 to the bracket 4 so that the clamping device can work normally.

[0085] (9) Connection between handle 17 and head fixing cover 18: Weld handle 17 to head fixing cover 18 to facilitate the operator to operate the clamping device.

[0086] B. Instructions for use:

[0087] (a) Material placement:

[0088] Place the metal sheet with a thickness of no more than 3mm that needs to be bent between the pressure cap 1 and the base, and measure the bending length according to the actual needs;

[0089] (ii) Material fixing:

[0090] Rotate the handle of the clamping device and use the M25 nut and screw to clamp the cover 1, firmly fixing the material to be bent between the cover 1 and the base;

[0091] (III) Bending operation:

[0092] By lifting the handle 10, the flap 11 rotates around the hinge 19, thus achieving material bending. The rotation angle of the flap 11 can be adjusted according to the required bending angle; the tool can bend from 0 to 135 degrees. The maximum bending length is 1300 mm, and the bending length can be adjusted as needed. The specific steps are as follows:

[0093] (1) Adjust the bending angle: Adjust the flap 11 to the required angle according to actual needs; the design of the hinge 19 ensures that the flap 11 can rotate flexibly and can achieve any angle adjustment from 0 degrees to 135 degrees.

[0094] (2) Perform the bending action: Hold the flip plate handle 10 with both hands, and lift the flip plate 11 evenly to make the metal plate bend between the pressure cover 1 and the flip plate 11 to complete the bending operation.

[0095] (3) Check the bending effect: After completing the bending, loosen the clamping device, take out the bent material, and check whether the bending effect meets the requirements; if it is necessary to further adjust the bending angle or length, the above steps can be repeated for fine adjustment.

[0096] (iv) Precautions:

[0097] (1) Material selection: This utility model is applicable to metal sheets with a thickness of no more than 3mm, such as flat iron, white steel sheet, stainless steel sheet, etc. For materials exceeding the thickness range, the bending effect and the service life of the tool may be affected.

[0098] (2) Operational safety: During operation, operators should wear necessary protective equipment, such as gloves and goggles, to prevent accidental injury. At the same time, ensure that the work area is flat and stable to avoid the tools shaking due to uneven ground, which would affect the bending accuracy.

[0099] (3) Regular maintenance: In order to ensure the long-term stable use of the tool, it is recommended to regularly inspect and maintain each component; in particular, the hinge 19 and the clamping device should be kept flexible and tight; if wear or looseness is found in the components, they should be replaced or repaired in time.

[0100] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model are included within the protection scope of the present utility model, which is defined by the appended claims and their equivalents.

Claims

1. A manual bending tool, characterized in that: Includes a pressure cap (1), a tail-fixed pressure cap channel steel (2), a fixing bolt (3), a bracket (4), a base plate (5), a base, a flip-plate handle (10), a flip plate (11), a clamping device, a handle (17), a head-fixed pressure cap (18), and a hinge (19). The gland (1) is made of galvanized angle steel of 1300mm×76mm×6mm; The tail fixing cap channel steel (2) is made of galvanized channel steel with dimensions of 280mm×63mm×40mm×4.8mm, and is welded to the cap (1). Two round holes with a diameter of 14mm are opened on the side. The fixing bolt (3) consists of two galvanized bolts of 100mm×12mm×1.75mm, which pass through the round hole of the tail fixing gland channel steel (2) and are welded to the bracket (4); The bracket (4) is composed of four galvanized channel steels of 60mm×63mm×40mm×4.8mm, two at the beginning and two at the end, which are welded to the base plate (5) and the tail fixing cover channel steel (2) respectively. The base plate (5) is made of 1500mm×120mm×53mm×5mm galvanized channel steel and is welded to the base. The base includes two upper galvanized angle steels (6), four support legs (7), two lower longitudinal galvanized angle steels (8) and two lower transverse galvanized angle steels (9), with dimensions of 275mm×50mm×5mm, 500mm×50mm×5mm, 400mm×50mm×5mm and 1555mm×50mm×5mm respectively; The flap (11) is made of galvanized angle steel of 1300mm×76mm×6mm and is connected to the base plate (5) by hinge (19); The handle (10) of the flip plate is made of two galvanized steel pipes of 350mm×33.5mm×2.5mm, which are welded to the flip plate (11); The hinge (19) is composed of a 10mm×1.5mm stainless steel tube and an inserted 6mm round steel, and is welded between the flip plate (11) and the base plate (5) to ensure the flexible rotation of the flip plate (11); The clamping device includes a horizontal handle (12), a first longitudinal handle connector (13), a second longitudinal handle connector (14), a third longitudinal handle connector (15), an M25×1.5 nut and screw, and a rotating connecting bolt (16). The clamping device clamps the cover (1) by means of the M25 nut and screw. The handle (17) is made of galvanized flat iron of 180mm×60mm×30mm×2mm and is welded to the head fixing cover (18); The head fixing cap (18) is made of galvanized channel steel of 280mm×63mm×40mm×4.8mm. A groove of 35mm×26mm×4.8mm is opened on the upper side near the pressing device, and two openings of 14mm in diameter are opened on the side near the cap (1).

2. The manual bending tool according to claim 1, characterized in that: The transverse handle (12) is made of galvanized steel pipe with dimensions of 75mm×33.5mm×2.5mm; the first longitudinal handle connector (13) is made of galvanized steel pipe with dimensions of 60mm×33.5mm×2.5mm; the second longitudinal handle connector (14) is an M25×1.5 nut with an outer diameter of 34mm; the third longitudinal handle connector (15) is a 100mm×25mm×1.5mm screw; the rotary connecting bolt (16) is made of galvanized bolt with dimensions of 100mm×12mm×1.75mm, and the rotary connecting bolt (16) is welded to the bracket (4); the transverse handle (12) is welded to the first longitudinal handle connector (13), the first longitudinal handle connector (13) is welded to the second longitudinal handle connector (14), the third longitudinal handle connector (15) is welded to the rotary connecting bolt (16), and the rotary connecting bolt (16) is welded to the bracket (4).

3. The manual bending tool according to claim 1, characterized in that: The manual bending tool can bend angles from 0 to 135 degrees, with a maximum bending material length of 1300 mm. The bending length can be adjusted according to actual needs.

4. The manual bending tool according to claim 1, characterized in that: The pressure cap (1), the tail fixing pressure cap channel steel (2), the bracket (4), the base plate (5), the base, the flip plate (11), and the head fixing pressure cap (18) are all made of galvanized material, which has good anti-corrosion performance and is suitable for the complex environment of the construction site.

5. The manual bending tool according to claim 1, characterized in that: The hinge (19) is made of stainless steel tube and round steel to ensure the flexible rotation of the flip plate (11) and improve the service life and reliability of the tool.

6. The manual bending tool according to claim 1, characterized in that: The clamping device clamps the cover (1) with an M25 nut and screw, which can firmly fix the material to be bent, ensure the stability of the material during the bending process, and improve the bending accuracy.

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