A Portable Handheld Steel Bar Bending Device and Method

Abstract

A portable handheld steel bar bending device and method mainly include a device. The device includes a bearing, on the outer ring of which an activity handle and an activity stopper are fixed; on the inner ring of the bearing, a connecting piece is fixed, and on the connecting piece, a limit stopper and a fixed handle are provided; a steel bar passes through the limit stopper and the activity stopper and is limited by the limit stopper and the activity stopper; one group of limit stoppers is located at the center of the bearing. The portable handheld steel bar bending device and method provided by the present invention can timely perform on-site treatment when it is found that the quality of steel bar bending processing at the operation site does not meet the requirements.

Description

Technical Field

[0001] The present invention relates to a steel bar bending device, in particular to a portable hand-held steel bar bending device and method, which is applicable to the situation where local steel bars at the construction site are not bent in place or need to be straightened. It can correct the quality of steel bar processing at the construction site in time and improve the quality of steel bar installation. Background Art

[0002] Reinforced concrete structures have been widely used in the construction market, covering various industries such as civil, industrial, and military, and are an important symbol of modern urban development and human civilization. As the framework of concrete structures, steel bars enhance the flexural, shear, and tensile resistance of concrete and extend the service life of concrete structures. Due to the large amount of steel bar processing in engineering construction, centralized steel bar processing plants are often set up for operations such as cutting, bending, and straightening of steel bars. Their processing equipment is large and relatively fixed in placement, making it difficult to move. However, there are still situations where some steel bars at the installation site are not bent in place or need to be straightened. The traditional approach is mostly to remove the unqualified steel bars and send them back to the factory or discard them, resulting in a large amount of rework, which is not conducive to construction period and cost control, and causes a large amount of resource waste and is not environmentally friendly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a portable hand-held steel bar bending device and method, which is a steel bar bending device that is easy to carry, flexible in use, simple in operation, reusable, and has relatively high control accuracy. When it is found that the quality of steel bar bending processing at the operation site does not meet the requirements, on-site treatment can be carried out in time to meet the qualified requirements, ensure the construction quality, reduce the return to the factory or material waste, and ensure the construction period and cost control.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A portable hand-held steel bar bending device includes a bearing. An activity handle and an activity stopper are fixed on the outer ring of the bearing; a connecting member is fixed on the inner ring of the bearing, and a limit stopper and a fixed handle are arranged on the connecting member; a steel bar passes through the limit stopper and the activity stopper and is limited by the limit stopper and the activity stopper; one group of limit stoppers is located at the center of the bearing.

[0006] An angle pointer is provided on the end face of the outer ring.

[0007] An angle scale is arranged on the end face of the inner ring.

[0008] The fixed handle is perpendicular to the axis of the connecting member.

[0009] There are at least three limit stoppers. Among them, one limit stopper is at the center of the bearing, and the other two are arranged on the other side of the connecting member and are spaced from the limit stopper at the center of the bearing.

[0010] There are two movable stoppers, and the interval between the two is consistent with the diameter of the steel bar.

[0011] A steel bar bending method includes the following steps:

[0012] Step 1), according to the initial state of the steel bar to be bent, adjust the fixed handle and the movable handle so that the steel bar can pass through the gap of the movable stopper and the gap of the limit stopper at the same time;

[0013] Step 2), read and record the angle scale line angle of the angle scale pointed by the angle pointer in the initial state;

[0014] Step 3), directly use both hands to pull the fixed handle and the movable handle and make the two approach each other, so that the outer ring and the inner ring of the bearing rotate relative to each other, and the movable stopper clamps the tail of the steel bar and rotates around the middle limit stopper;

[0015] Step 4), read the degree of the angle scale pointed by the angle pointer to determine the bending angle of the steel bar after adjustment.

[0016] In step 3), when the diameter of the steel bar is small, fix the fixed handle in the external limit groove or the steel pipe sleeve. Pull the movable handle by hand to make the outer ring of the bearing rotate relative to the inner ring, and the movable stopper clamps the tail of the steel bar and rotates around the middle limit stopper.

[0017] A portable hand-held steel bar bending device and method of the present invention have the following technical effects:

[0018] 1), This application is flat. In the retracted state, the fixed handle and the movable handle overlap, and the overall size is small, easy to store, and can be carried around.

[0019] 2), By setting the limit stopper and the movable stopper, a steel bar placement groove can be formed, which can adapt to steel bars with different initial state bending angles.

[0020] 3), By setting the angle pointer and the scale, the bending angle is visualized.

[0021] 4), The movable handle and the fixed handle can rotate bidirectionally to realize the bending or straightening of the steel bar.

[0022] 5), Since the torques required are different when the diameters of the steel bars to be bent are different, the length of the handle can be adjusted to realize the adjustment of the force arm to adapt to different torque requirements. Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments:

[0024] Figure 1 It is the front view of the present invention (the fixed handle and the movable handle are unfolded).

[0025] Figure 2 It is a left view of the present invention.

[0026] Figure 3 It is a top view of the present invention.

[0027] Figure 4 It is the front view of the present invention (fixed handle and movable handle are put together).

[0028] Figure 5 It is the front view of the external parts in the present invention.

[0029] Figure 6 It is the front view of the internal parts in the present invention.

[0030] Figure 7 It is a schematic diagram of the initial placement state of the steel bars of the present invention.

[0031] Figure 8 It is a schematic diagram of the bending state of the steel bar of the present invention.

[0032] In the figure: bearing 1, fixed handle 2, movable handle 3, limit stop 4, movable stop 5, connecting piece 6, outer ring 7, angle pointer 8, inner ring 9, angle dial 10, steel bar 11, ball bearing 12. DETAILED DESCRIPTION

[0033] like Figure 1-6 As shown, a portable handheld steel bar bending device includes a bearing 1, a fixed handle 2, a movable handle 3, a limit stop 4, a movable stop 5 and a connecting piece 6.

[0034] An angle pointer 8 is arranged on the end face of the outer ring 7 of the bearing 1, a movable handle 3 is welded to the side wall of the outer ring 7, and a movable stop 5 is welded on the movable handle 3. There are two movable stops 5 and they are spaced a certain distance apart to facilitate the passage of the steel bar 11.

[0035] An angle scale 10 is arranged on the end face of the inner ring 9 of the bearing 1, a connector 6 is welded inside the inner ring 9, a limit stop 4 is welded on the connector 6, a fixed handle 2 is welded to the back of the inner ring 9, and is welded to the connector 6 in the middle.

[0036] Among the three limit stops 4 , the center of the middle limit stop 4 is located on the central axis of the bearing 1 , and the fixed handle 2 is perpendicular to the axis of the connecting member 6 .

[0037] A steel bar bending method comprises the following steps:

[0038] Step 1: According to the initial state of the steel bar to be bent, adjust the fixed handle 2 and the movable handle 3 so that the steel bar 11 can pass through the gap of the movable stop 5 and the gap of the limit stop 4 at the same time.

[0039] Step 2: read and record the angle of the scale line of the angle dial 10 pointed by the angle pointer 8 in the initial state.

[0040] Step 3: When the diameter of the steel bar 11 is relatively large, directly use both hands to pull the fixed handle 2 and the movable handle 3 and make them approach each other, so that the outer ring 7 and the inner ring 9 of the bearing 1 rotate relative to each other, and the limiting block 4 and the movable block 5 clamp the steel bar and rotate around the middle limiting block 4;

[0041] When the diameter of the steel bar 11 is relatively small, fix the fixed handle 2 in the external limiting groove or the steel pipe sleeve for fixation. Use hand to pull the movable handle 3 to make the outer ring 7 of the bearing 1 rotate relative to the inner ring 9, and the movable block 5 clamps the tail of the steel bar and rotates around the middle limiting block 4.

[0042] Step 4: Read the degree of the angle scale 10 pointed by the angle pointer 8 to determine the bending angle of the steel bar after adjustment.

Claims

1. A portable hand-held steel bar bending device, characterized in that: It includes a bearing (1), on the outer ring (7) of the bearing (1), a movable handle (3) and a movable stop (5) are fixed; on the inner ring (9) of the bearing (1), a connecting piece (6) is fixed, and on the connecting piece (6), a limit stop (4) and a fixed handle (2) are provided; a steel bar (11) passes through the limit stop (4) and the movable stop (5) and is limited by the limit stop (4) and the movable stop (5); one set of limit stops (4) is located at the center of the bearing (1); the limit stops (4) are at least three, among which, one limit stop (4) is at the center of the bearing (1), and the other two are arranged on the other side of the connecting piece (6) and are spaced from the limit stop (4) at the center of the bearing (1). An angle scale (10) is provided on the end face of the inner ring (9).

2. The portable hand-held steel bar bending device according to claim 1, wherein: An angle pointer (8) is provided on the end face of the outer ring (7).

3. A portable hand-held steel bar bending device according to claim 1, characterized in that: The fixed handle (2) is perpendicular to the axis of the connecting piece (6).

4. A portable hand-held steel bar bending device according to claim 1, characterized in that: There are two movable stops (5), and the interval between the two is the same as the diameter of the steel bar (11).

5. A method for bending a steel bar using a portable hand-held steel bar bending device according to any one of claims 1-4, comprising the following steps: Step 1), according to the initial state of the steel bar to be bent, adjust the fixed handle (2) and the movable handle (3) so that the steel bar (11) can pass through the gaps of the movable stop (5) and the limit stop (4) simultaneously; Step 2), read and record the angle of the scale line of the angle scale (10) pointed to by the angle pointer (8) in the initial state; Step 3), directly use both hands to pull the fixed handle (2) and the movable handle (3) closer, so that the outer ring (7) and the inner ring (9) of the bearing (1) rotate relative to each other, and the movable stop (5) clamps the tail of the steel bar and rotates around the middle limit stop (4); Step 4), read the degree of the angle scale (10) pointed to by the angle pointer (8) to determine the bending angle of the steel bar after adjustment.

6. A steel bar bending method according to claim 5, characterized in that: In step 3), when the diameter of the steel bar (11) is small, fix the fixed handle (2) in an external limit groove or a steel pipe sleeve for fixation; use hand to pull the movable handle (3) to make the outer ring (7) of the bearing (1) rotate relative to the inner ring (9), and the movable stop (5) clamps the tail of the steel bar and rotates around the middle limit stop (4).

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