Stirrup bending wrench

Abstract

The utility model provides a stirrup bending wrench. Comprising a pulling rod, a handle and a plurality of supporting rods, the pulling rod and the supporting rods are relatively fixed in position, the starting ends of the supporting rods make contact with tie bars on the two sides of a stirrup respectively, the starting end of the pulling rod is provided with a contact end making contact with the stirrup to be bent, and the handle is connected with the tail end of the pulling rod. The bending structures at the tail ends of the two supporting rods are used for hooking a tie bar of a concrete reinforcement body, and then the groove in the starting end of the pulling rod is aligned with a stirrup to be bent. The handle is pushed, the ratchet wheel is driven to rotate through the transmission shaft, the pulling rod and the supporting rod are driven to integrally move towards one side, and stirrups are bent relative to tie bars. When the pulling rod swings to the maximum angle, bending cannot be completed at a time due to the fact that the bending angle of the stirrup is large and the handle is possibly interfered by a concrete reinforcing steel bar body.

Description

Technical Field

[0001] The utility model relates to the field of construction tools, in particular to a stirrup bending wrench used in steel bar construction, especially for performing precise and efficient bending operations on stirrups. Background Art

[0002] In construction engineering, the bending of stirrups is a critical step in steel bar processing, and its bending accuracy directly affects the overall quality and structural safety of the steel cage. Traditional manual bending methods are not only inefficient but also difficult to ensure the accuracy and consistency of the bending angle.

[0003] Patent application number CN201720739220.5 provides a stirrup bending wrench for post-processing a draw hook. The wrench comprises a wrench body, a wrench-mounting end of the wrench body being provided with a wrench that fits over the draw hook and engages therewith. The wrench is provided within the wrench, with at least one set of adjacent first and second limiting end faces that abut against the outer surface of the draw hook. In case the draw hook is not bent to the required predetermined degree or is difficult to install, when the draw hook is post-processed and bent to a predetermined angle, the wrench body is fitted over the draw hook via the wrench at its end. The wrench has adjacent first and second limiting end faces within the wrench. When the wrench body is moved, the outer surface of the draw hook abuts against the first and second limiting end faces, causing the outer surface of the draw hook to engage with the wrench. When the wrench body is moved, the wrench's limiting structure prevents the draw hook from sliding within the wrench, facilitating operation of the wrench.

[0004] However, the aforementioned patented technology is significantly affected by the applicable environment, is time-consuming and labor-intensive to operate, and fails to resolve the technical problems existing in the prior art. Therefore, there is an urgent need for a specialized tool that can automatically lock the position, is easily adjustable, and can efficiently complete stirrup bending operations. Utility Model Content

[0005] The purpose of this utility model is to provide a stirrup bending wrench to solve the problems raised in the above background technology:

[0006] (1) How to achieve automatic locking and position retention of stirrups during the bending process, and at the same time combine with the adjustable support rod structure to make the bending operation of stirrups more flexible, efficient and precise.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A stirrup bending wrench;

[0009] It includes a pull rod, a handle and several support rods. The positions of the pull rod and the several support rods are relatively fixed. The starting ends of the several support rods are respectively in contact with the tension bars on both sides of the stirrups. The starting end of the pull rod is provided with a contact end that contacts the stirrups to be bent. The handle is connected to the end of the pull rod.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a groove is formed at the contact end of the pull rod to match the stirrup.

[0012] Furthermore, the end of the support rod is also provided with a bend that cooperates with the tie rod.

[0013] Furthermore, it also includes a transmission shaft, and the end of the pull rod and the ends of the plurality of support rods are fixedly connected to the transmission shaft.

[0014] Furthermore, it also includes a ratchet mechanism, which includes a ratchet, a pawl, a shell and a spring. The ratchet is located inside the cavity of the shell, the ratchet is fixedly mounted on the transmission shaft, and the shell can move freely relative to the transmission shaft. The starting end of the pawl is hinged to the inner wall of the shell outside the ratchet, and the end of the pawl rests on the gear of the ratchet. The starting end of the spring is fixed on the inner wall of the shell, and the end of the spring rests on the side wall of the pawl away from the ratchet. The lower end of the handle is fixedly connected to the side wall of the shell of the ratchet mechanism.

[0015] Furthermore, the ratchet mechanism also includes an adjusting shaft, which is supported on the shell, and the starting end of the stopping claw is fixedly mounted on the end of the adjusting shaft extending into the shell cavity, and the other end of the adjusting shaft extends out of the shell, and the end of the adjusting shaft extending out of the shell is provided with a handle.

[0016] Furthermore, it also includes a fixed cover, the two sides of the fixed cover are fixedly connected to the transmission shafts on both sides of the ratchet mechanism, and the starting end of the pull rod and a plurality of support rods are fixedly connected between the fixed cover and the transmission shaft.

[0017] With this structure, the bending structures at the ends of the two support rods hook onto the main reinforcement bar of the concrete bar. Then, the groove at the beginning of the lever is aligned with the stirrup to be bent. Pushing the handle rotates the ratchet through the drive shaft, which in turn drives the lever and the support rods to the side, bending the stirrup relative to the reinforcement bar. When the lever swings to its maximum angle, the stirrup cannot be bent in one go due to the large bending angle of the stirrup and the possibility of interference from the main concrete bar.

[0018] At this point, the handle can be swung in the opposite direction. The pawl in the ratchet mechanism is reset by the action of the spring, but the position of the lever and support rod remains unchanged due to the one-way locking effect of the ratchet. Then, adjust the handle position to the non-interference area and swing the handle again until the stirrup is bent to the predetermined angle, completing the entire bending operation.

[0019] The beneficial effects of this stirrup bending wrench are:

[0020] (1) Improve work efficiency: The one-way locking function of the ratchet mechanism reduces the time for repeated adjustment of the stirrup position and improves work efficiency.

[0021] (2) Ensure bending accuracy: The stable structure of the lever and support rod and the precise coordination with the stirrups ensure the accuracy and consistency of the bending angle of the stirrups.

[0022] (3) Easy to operate: The synchronous design of the handle and the ratchet mechanism makes the operation more intuitive and simple, reducing the difficulty of operation.

[0023] (4) Strong adaptability: By adjusting the position of the stop claw by adjusting the shaft, it can adapt to the bending requirements of stirrups of different diameters and materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the stirrup bending wrench.

[0025] Figure 2 yes Figure 1 Left view of .

[0026] Figure 3 It is a cross-sectional view of a schematic diagram of the ratchet mechanism in the embodiment of the stirrup bending wrench.

[0027] Description of the numbers in the figure:

[0028] Lever 100; groove 110; handle 200; fixing cover 300; support rod 400; transmission shaft 500; ratchet mechanism 600; housing 610; ratchet 620; pawl 630; adjustment shaft 640; handle 641; reed 650. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only implementations.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] See also Figures 1 to 3 .

[0033] The stirrup bending wrench includes a lever 100 , a handle 200 , a transmission shaft 500 , a fixing cover 300 , a ratchet mechanism 600 and two supporting rods 400 .

[0034] The ratchet mechanism 600 includes a ratchet 620, a pawl 630, a housing 610, an adjusting shaft 640, and a reed 650. The ratchet 620 is located inside the cavity of the housing 610. The ratchet 620 is fixedly mounted on the transmission shaft 500. The housing 610 can move freely relative to the transmission shaft 500. The starting end of the pawl 630 is hinged to the inner wall of the housing 610 outside the ratchet 620. The end of the pawl 630 abuts against the gear of the ratchet 620. The starting end of the reed 650 is fixed to the housing 610. On the inner wall, the end of the reed 650 rests on the side wall of the stopping claw 630 away from the ratchet 620, the adjusting shaft 640 is supported on the shell 610, and the starting end of the stopping claw 630 is fixedly installed on the end of the adjusting shaft 640 extending into the cavity of the shell 610, and the other end of the adjusting shaft 640 extends out of the outside of the shell 610. The end of the adjusting shaft 640 extending out of the outside of the shell 610 is equipped with a handle 641, and the lower end of the handle 200 is welded and fixed to the circumferential side wall of the shell 610 of the ratchet mechanism 600.

[0035] The starting ends of the two support rods 400 are in contact with the tension bars on both sides of the stirrups respectively. The starting end of the pull rod 100 is provided with a contact end that contacts the stirrups to be bent. The contact end of the starting end of the pull rod 100 is provided with a groove 110 that cooperates with the stirrups.

[0036] The positions of the pull rod 100 and the two support rods 400 are relatively fixed, and the ends of the support rods 400 are also provided with bends that cooperate with the tension bars.

[0037] Both sides of the fixed cover 300 are respectively welded and fixed to the transmission shaft 500 on both sides of the ratchet mechanism 600 , and the starting end of the pull rod 100 is welded and fixed to the two support rods 400 and the fixed cover 300 .

[0038] When in use, first hook the bent ends of the two support rods 400 on the tension bars of the concrete reinforcement body, and the groove 110 at the starting end of the lever 100 cooperates with the stirrups, and pushes the handle 200 to drive the stirrups to be relatively tightened and bent until the lever 100 swings to the maximum angle. However, due to the large bending angle of the stirrups (the stirrups are bent 120° to 150° from their original upright state), and the handle 200 is interfered with by the concrete reinforcement body, it is impossible to complete the bending operation of the stirrups in one swing. The handle 200 is swung in the opposite direction, and the ratchet mechanism 600 is activated. The positions of the lever 100 and the two support rods 400 do not change. The handle 200 moves to a position where there is no interference with the concrete reinforcement body, and the handle 200 is swung again until the stirrups are bent to the predetermined angle to complete the operation.

[0039] The above is only one embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the principles of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A stirrup bending wrench, characterized by: The invention comprises a pull rod (100), a handle (200) and a plurality of supporting rods (400). The positions of the pull rod (100) and the plurality of supporting rods (400) are relatively fixed. The starting ends of the plurality of supporting rods (400) are respectively in contact with the reinforcement bars on both sides of the stirrups. The starting end of the pull rod (100) is provided with a contact end for contacting the stirrups to be bent. The handle (200) is connected to the end of the pull rod (100).

2. The stirrup bending wrench according to claim 1, characterized in that: The contact end of the pull rod (100) is provided with a groove (110) for matching with the stirrup.

3. The stirrup bending wrench according to claim 1, characterized in that: The end of the support rod (400) is also provided with a bend that cooperates with the tensioning rod.

4. The stirrup bending wrench according to claim 1, wherein: It also includes a transmission shaft (500), and the end of the pull rod (100) and the ends of the plurality of support rods (400) are fixedly connected to the transmission shaft (500).

5. The stirrup bending wrench according to claim 4, characterized in that: The invention also includes a ratchet mechanism (600), wherein the ratchet mechanism (600) includes a ratchet (620), a pawl (630), a housing (610) and a spring (650). The ratchet (620) is located inside the cavity of the housing (610). The ratchet (620) is fixedly mounted on the transmission shaft (500). The housing (610) can move freely relative to the transmission shaft (500). The starting end of the pawl (630) is hinged on the inner wall of the housing (610) outside the ratchet (620). The end of the pawl (630) abuts against the gear of the ratchet (620). The starting end of the spring (650) is fixed on the inner wall of the housing (610). The end of the spring (650) abuts against the side wall of the pawl (630) away from the ratchet (620). The lower end of the handle (200) is fixedly connected to the side wall of the housing (610) of the ratchet mechanism (600).

6. The stirrup bending wrench according to claim 5, characterized in that: The ratchet mechanism (600) further comprises an adjusting shaft (640), the adjusting shaft (640) being supported on the housing (610), the starting end of the stop pawl (630) being fixedly mounted on the end of the adjusting shaft (640) extending into the cavity of the housing (610), the other end of the adjusting shaft (640) extending outside the housing (610), and the end of the adjusting shaft (640) extending outside the housing (610) being provided with a handle (641).

7. The stirrup bending wrench according to claim 5, characterized in that: The invention also includes a fixed cover (300), both sides of which are fixedly connected to the transmission shafts (500) on both sides of the ratchet mechanism (600), and the starting end of the pull rod (100) and the plurality of support rods (400) are fixedly connected between the fixed cover (300) and the transmission shaft (500).

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