Tool for controlling pre-bending angle of reinforcing steel bar

Abstract

The tool comprises a supporting assembly which is arranged on a manual hydraulic clamp and makes contact with a reinforcing steel bar, the supporting assembly is used for abutting against the reinforcing steel bar so that the reinforcing steel bar can be bent under the pressure of the manual hydraulic clamp, an angle limiting mechanism is arranged on the manual hydraulic clamp, and the angle limiting mechanism comprises an angle ruler, a clamping mechanism and a clamping mechanism, the rotating shaft is rotationally arranged at the top of the manual hydraulic clamp; the limiting rod is fixedly arranged on one side of the bevel protractor, and one side of the limiting rod is in contact connection with the side, close to the bevel protractor, of the steel bar; the fixing assembly is arranged on the bevel protractor and used for fixing the angle of the bevel protractor and the angle of the limiting rod, the pressing handle is pressed downwards to drive the die head and the reinforcing steel bar to move, the vertical supporting column extrudes the reinforcing steel bar, the short end of the reinforcing steel bar is bent, and the bevel protractor drives the limiting rod to rotate by a certain angle. And marks on the positioning rod are matched to be aligned with scales on the bevel protractor, so that the reinforcing steel bar is stopped when being bent to be in contact with the limiting rod, and the bending angle of the reinforcing steel bar can be accurately determined.

Description

Technical Field

[0001] This application relates to the field of steel bar processing, and more particularly to a tooling for controlling the pre-bending angle of steel bars. Background Technology

[0002] Rebar connections often employ lap welding, a process that requires pre-bending of the welded parts of the rebar. Pre-bending of the rebar is an indispensable process in lap welding construction and a crucial step in product quality control. It is widely used in reinforced concrete structures such as bridges, tunnels, and high-rise buildings, and is of great significance for improving rebar processing quality and construction efficiency.

[0003] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: When bending steel bars, the steel bars are generally pre-bent by measuring them manually. The manual measurement method is cumbersome, has low construction efficiency, and large deviations in angle values, which results in the steel bars not reaching the optimal stress state when connected, seriously affecting the welding quality and service life of the steel bars. Utility Model Content

[0004] This application provides a tooling for controlling the pre-bending angle of reinforcing bars, which solves the problem of large angle deviation when manually bending reinforcing bars in the prior art, and achieves the effect of positioning the bending position of the reinforcing bars.

[0005] This application provides a tooling for controlling the pre-bending angle of a reinforcing bar, including a support assembly on a manual hydraulic clamp that contacts the reinforcing bar. The support assembly is used to hold the reinforcing bar against the pressure of the manual hydraulic clamp so that the reinforcing bar bends under the pressure of the manual hydraulic clamp. The manual hydraulic clamp is provided with an angle limiting mechanism, which includes: an angle ruler rotatably disposed on the top of the manual hydraulic clamp; a limiting rod fixedly disposed on one side of the angle ruler, and one side of the limiting rod is in contact with the side of the reinforcing bar closest to the angle ruler; and a fixing assembly disposed on the angle ruler, and the fixing assembly is used to fix the angle between the angle ruler and the limiting rod.

[0006] Furthermore, the manual hydraulic clamp includes: a clamp body disposed on the outside of the reinforcing bar, and an angle gauge disposed on the top of the clamp body; a pressure handle disposed at one end of the clamp body; and a movable die head disposed inside the clamp body, wherein the movable die head is in contact with the reinforcing bar, and the downward pressing of the pressure handle drives the movable die head and the reinforcing bar to move.

[0007] Furthermore, the support assembly includes: two vertical support columns disposed on both sides of the clamp body, and the two vertical support columns are in contact with the outer side of the reinforcing bar; and two horizontal fixing columns fixedly disposed on the top and bottom of the clamp body, and the two horizontal fixing columns are fixedly connected to the two vertical support columns.

[0008] Furthermore, the angle limiting mechanism further includes: a positioning rod disposed on the other side of the angle ruler; an indicator disposed on one end of the positioning rod near the angle ruler, and the indicator is disposed on the top of the angle ruler; and a connecting rod disposed at the bottom of the positioning rod, and the bottom of the connecting rod is fixedly connected to the clamp body.

[0009] Furthermore, the fixing component includes: a fixing knob disposed on the top of the angle gauge; a threaded post fixedly disposed on the bottom of the fixing knob, and the angle gauge sleeved on the outside of the threaded post; and a mounting base fixedly disposed on the top of the clamp body, and the top of the mounting base is provided with a threaded groove, the threaded groove being threadedly connected to the threaded post.

[0010] The technical solution provided in this application has at least the following technical effects or advantages:

[0011] By pressing down the handle, the die head and the reinforcing bar move. The vertical support column squeezes the reinforcing bar, causing the shorter end of the reinforcing bar to bend. The angle gauge drives the limiting rod to rotate at a certain angle. With the mark on the positioning rod aligned with the scale on the angle gauge, the reinforcing bar stops bending when it contacts the limiting rod. This accurately determines the bending angle of the reinforcing bar, ensuring that the reinforcing bar reaches the optimal stress state during connection, thereby improving the welding quality and service life of the reinforcing bar. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the tooling in the embodiments of this application;

[0013] Figure 2 This is a schematic diagram of the planar structure of the support component in an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the angle limiting mechanism in the embodiments of this application;

[0015] Figure 4 This is a cross-sectional structural diagram of the mounting base in an embodiment of this application;

[0016] In the diagram: 10. Manual hydraulic clamps; 11. Clamp body; 12. Clamp handle; 13. Moving die head; 20. Rebar; 30. Support assembly; 40. Angle limiting mechanism; 31. Vertical support column; 32. Horizontal fixing column; 41. Angle ruler; 42. Limiting rod; 43. Positioning rod; 44. Marker; 45. Connecting rod; 46. Fixing assembly; 461. Fixing knob; 462. Threaded column; 463. Mounting base; 464. Threaded groove. Detailed Implementation

[0017] This application discloses a tooling for controlling the pre-bending angle of reinforcing bars. The angle ruler 41 drives the rotation of the limiting rod 42, and the positioning rod 43 is aligned with the direction of the mark 44 to position the bending angle of the reinforcing bar 20. The movement of the moving mold head 13 causes the reinforcing bar 20 to be pressed against the vertical support column 31, and the shorter end of the reinforcing bar 20 bends to the contact position with the limiting rod 42, thereby accurately determining the bending angle and position of the reinforcing bar 20, improving the welding quality and service life of the reinforcing bar 20.

[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0019] Please refer to Figure 1 and Figure 2 This embodiment provides a tooling for controlling the pre-bending angle of a reinforcing bar, including a support component 30 on a manual hydraulic clamp 10 that contacts the reinforcing bar 20. The support component 30 is used to hold the reinforcing bar 20 so that the reinforcing bar 20 bends under the pressure of the manual hydraulic clamp 10. The manual hydraulic clamp 10 includes a clamp body 11, a pressure handle 12, and a movable die head 13. The clamp body 11 is located on the outside of the reinforcing bar 20, and a hydraulic device is installed inside the clamp body 11. The pressure handle 12 is located at one end of the clamp body 11, and the movable die head 13 is located inside the clamp body 11. The movable die head 13 is in contact with the reinforcing bar 20, and the downward pressure of the pressure handle 12 drives the movable die head 13 and the reinforcing bar 20 to move. The downward pressure of the clamp body 11 drives the hydraulic pump in the hydraulic device to work, pushing the piston to move, thereby driving the movable die head 13 to move. The movement of the movable die head 13 causes the clamp body 11 in contact with it to move accordingly, and is held by the support component 30 and bent, thus completing the bending work of the reinforcing bar 20.

[0020] Please refer to Figure 1 and Figure 2The support assembly 30 includes vertical support columns 31 and horizontal fixing columns 32. Two vertical support columns 31 are located on both sides of the clamp body 11 and are in contact with the outer side of the reinforcing bar 20. Two horizontal fixing columns 32 are fixedly located at the top and bottom of the clamp body 11 and are fixedly connected to the two vertical support columns 31. The vertical support columns 31 are located between the movable die head 13 and the fixed die head on the clamp body 11. The vertical support columns 31 are fixed to the clamp body 11 by the horizontal fixing columns 32 and are connected by the pressure handle 12. The movement of the movable mold head 13 and the reinforcing bar 20 allows the reinforcing bar 20 to move to a position against the vertical support column 31. The movement of the movable mold head 13 causes the reinforcing bar 20 to be subjected to the pressure of the two vertical support columns 31. Because the longer end of the reinforcing bar 20 is much longer than the shorter end, the longer end of the reinforcing bar 20 has a greater self-weight and needs to overcome more internal friction when bending. The longer end is not easy to bend. As a result, when the movable mold head 13 applies pressure to the reinforcing bar 20, the shorter end of the reinforcing bar 20 bends, and the reinforcing bar 20 is bent.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3The manual hydraulic pliers 10 is equipped with an angle limiting mechanism 40, which includes an angle ruler 41, a limiting rod 42, a positioning rod 43, a marker 44, and a connecting rod 45. The angle ruler 41 is rotatably mounted on the top of the manual hydraulic pliers 10. The limiting rod 42 is fixedly mounted on one side of the angle ruler 41, and one side of the limiting rod 42 is in contact with the side of the reinforcing bar 20 near the angle ruler 41. The positioning rod 43 is located on the other side of the angle ruler 41, and the inner side of the positioning rod 43 is in the same vertical position as the inner side of the two vertical support columns 31. The marker 44 is located at the end of the positioning rod 43 near the angle ruler 41, and the marker 44 is located on the top of the angle ruler 41. The connecting rod 45 is located at the bottom of the positioning rod 43, and the bottom of the connecting rod 45 is fixedly connected to the pliers 11. The positioning rod 43 is mounted on the pliers 11 through the connecting rod 45. The fixing assembly 4... 6 is set on the angle ruler 41, and the fixing component 46 is used to fix the angle of the angle ruler 41 and the limiting rod 42. When the rebar 20 is inserted into the clamp body 11, the positioning rod 43 always keeps in contact with the outside of the rebar 20. The positioning rod 43 positions the rebar 20 so that the rebar 20 is in a state of being horizontal with the mark 44 at one end of the positioning rod 43 when it is inserted into the clamp body 11, thereby ensuring the accuracy of bending. After the rebar 20 is fixed on the clamp body 11, the position of the mark 44 on the positioning rod 43 on the angle ruler 41 when the limiting rod 42 contacts the inside of the rebar 20 determines the initial value. Then, by rotating the angle ruler 41 and the limiting rod 42 according to the required bending angle, the limiting rod 42 is rotated to the appropriate position to position the bending of the rebar 20, so that the bending of the rebar 20 can be more accurate, thereby enabling the rebar 20 to reach the optimal stress state during connection, improving the welding quality and service life of the rebar 20.

[0022] Please refer to Figures 1-4The fixing assembly 46 includes a fixing knob 461, a threaded post 462, a mounting base 463, and a threaded groove 464. The fixing knob 461 is located on the top of the angle gauge 41. The threaded post 462 is fixedly located on the bottom of the fixing knob 461, and the angle gauge 41 is sleeved on the outside of the threaded post 462. The mounting base 463 is fixedly located on the top of the clamp body 11, and the top of the mounting base 463 has a threaded groove 464. The threaded groove 464 is threadedly connected to the threaded post 462. By rotating the fixing knob 461, the threaded post 462 is screwed into the threaded groove 464 on the mounting base 463, so that the fixing knob 461 presses the angle gauge 41 tightly against the mounting base 463 and the threaded post 462. Between the fixed knobs 461, the angle gauge 41 and the limiting rod 42 are fixed, so that when the fixed knobs 461 do not fix the angle gauge 41, the angle gauge 41 and the limiting rod 42 can rotate freely to determine the angle at which the rebar 20 needs to be bent. When the fixed knobs 461 fix the angle gauge 41 and the limiting rod 42, the bending angle of the rebar 20 is determined accordingly, preventing the position of the limiting rod 42 from changing during the bending of the rebar 20, thus affecting the accuracy of the bending. For rebars 20 of the same type and lap splice, their pre-bending angle is the same. After setting the angle, the rebar 20 can be pre-bent directly, which ensures the pre-bending angle value and improves work efficiency.

[0023] The functional principle of this application can be explained through the following methods:

[0024] In use, insert the reinforcing bar 20 between the fixed die head and the movable die head 13 of the clamp body 11, press the pressure handle 12, so that the pressure handle 12 drives the movable die head 13 to move through the hydraulic device inside the clamp body 11, so that the movable die head 13 moves the reinforcing bar 20 to the contact position with the two vertical support columns 31 and the positioning rod 43. Turn off the fixing knob 461 to release the fixing of the angle ruler 41, so that the angle ruler 41 and the limiting rod 42 rotate to the contact position with the inner side of the reinforcing bar 20. Record the angle indicated by the mark 44 at one end of the positioning rod 43 on the angle ruler 41 at this time. Then, according to the angle that the reinforcing bar 20 needs to be bent, rotate the angle ruler 41 and the limiting rod 42 to the corresponding angle position, tighten the fixing knob 461, so that the threaded column 462 is screwed into the threaded groove 464 of the mounting base 463. The fixing knob 461 and the mounting base 463 clamp the angle ruler 41, thereby fixing the angle ruler. The angles of the limiting rod 41 and the limiting rod 42 are fixed. Pressing down the pressure handle 12 causes the pressure handle 12 to drive the moving die head 13 to apply pressure to the inside of the reinforcing bar 20. The outside of the reinforcing bar 20 abuts against the two vertical support columns 31, so that the reinforcing bar 20 is subjected to the force of the two vertical support columns 31. This causes the shorter end of the more easily bent reinforcing bar 20 to bend until the shorter end of the reinforcing bar 20 bends to the contact position with the limiting rod 42. This allows the reinforcing bar 20 to be bent to the appropriate angle, so that the reinforcing bar 20 reaches the optimal stress state when connected, improving the welding quality and service life of the reinforcing bar 20. When bending reinforcing bars 20 of the same type and lap splice form, since the pre-bending angle is the same, after setting the angle, there is no need to change the position of the limiting rod 42. The pre-bending operation of the reinforcing bar 20 can be performed directly, which ensures the pre-bending angle value and improves work efficiency.

[0025] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

[0026] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A tooling for controlling the angle of pre-bending of a steel bar, characterized by, The supporting assembly (30) on the manual hydraulic clamp (10) is in contact with the reinforcing bar (20), and is used to resist the reinforcing bar (20) to bend when the reinforcing bar (20) is pressed by the manual hydraulic clamp (10), and the angle limiting mechanism (40) is arranged on the manual hydraulic clamp (10), and the angle limiting mechanism (40) comprises: An angle ruler (41) is arranged on the top of the manual hydraulic clamp (10); A limiting rod (42) is fixedly arranged on one side of the angle ruler (41), and one side of the limiting rod (42) is in contact with the side of the reinforcing bar (20) close to the angle ruler (41); A fixing assembly (46) is arranged on the angle ruler (41), and the fixing assembly (46) is used to fix the angle of the angle ruler (41) and the limiting rod (42).

2. A tool for controlling the angle of pre-bending of reinforcing bars as claimed in claim 1, wherein The manual hydraulic clamp (10) comprises: A clamp body (11) is arranged on the outside of the reinforcing bar (20), and the angle ruler (41) is arranged on the top of the clamp body (11); A pressing handle (12) is arranged at one end of the clamp body (11); A movable die (13) is arranged inside the clamp body (11), the movable die (13) is in contact with the reinforcing bar (20), and the pressing of the pressing handle (12) drives the movable die (13) and the reinforcing bar (20) to move.

3. A tool for controlling the angle of pre-bending of reinforcing steel according to claim 2, wherein The supporting assembly (30) comprises: Two vertical supporting columns (31) are arranged on both sides of the clamp body (11), and the two vertical supporting columns (31) are in contact with the outside of the reinforcing bar (20); Two horizontal fixing columns (32) are fixedly arranged on the top and bottom of the clamp body (11), and the two horizontal fixing columns (32) are fixedly connected with the two vertical supporting columns (31).

4. A tool for controlling the angle of pre-bending of reinforcing bars as claimed in claim 2 wherein, The angle limiting mechanism (40) further comprises: A positioning rod (43) is arranged on the other side of the angle ruler (41); An identification (44) is arranged on one end of the positioning rod (43) close to the angle ruler (41), and the identification (44) is arranged on the top of the angle ruler (41); A connecting rod (45) is arranged on the bottom of the positioning rod (43), and the bottom of the connecting rod (45) is fixedly connected with the clamp body (11).

5. A tool for controlling the angle of pre-bending of reinforcing bars as claimed in claim 2 wherein, The fixing assembly (46) comprises: A fixing knob (461) is arranged on the top of the angle ruler (41); A threaded column (462) is fixedly arranged on the bottom of the fixing knob (461), and the angle ruler (41) is arranged on the outside of the threaded column (462); An installation seat (463) is fixedly arranged on the top of the clamp body (11), and a threaded groove (464) is formed in the top of the installation seat (463), and the threaded groove (464) is threadedly connected with the threaded column (462).

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