Ratchet reciprocating steel bar bending tool and method of using the same

Abstract

The ratchet reciprocating steel bar bending tool provided by the present invention comprises a gripping part and a head arranged at one end of the gripping part; a driving part is rotatably connected in the head, and a limit assembly for limiting the reverse rotation of the driving part is also arranged in the head; a connecting head is arranged at one end of the driving part, a sleeve is installed on the connecting head, a connecting sleeve is arranged on the outer wall of the sleeve, the connecting sleeve and the connecting head are detachably connected, and the connecting sleeve and the connecting head rotate synchronously with the driving part, and the inner hole of the sleeve is used to insert the steel bar to be bent. The present application realizes the unidirectional rotation movement of the driving part through the limiter, so that the gripping part can bend the steel bar to be bent inserted in the sleeve to a predetermined bending angle through reciprocating small-angle pivoting, thereby realizing the steel bar bending operation at the construction site, especially for the steel bar bending operation with limited operating space, which is simple to operate, saves time and effort, and has high work efficiency.

Description

Technical Field

[0001] The invention relates to the field of construction tools, and in particular to a ratchet reciprocating steel bar bending tool and a use method thereof. Background Art

[0002] During the construction process, a large number of steel cages need to be made to form the load-bearing components of the building. Generally, the steel cage is composed of main bars arranged horizontally and / or vertically and stirrups connecting the main bars. In order to meet the process requirements, the ends of the stirrups need to be bent into a hook shape, and the hook needs to be around 135°. If both ends of the stirrups are pre-processed into a hook shape, it is not convenient to fix the stirrups on the corresponding main bars on site. Therefore, in actual operation, only one end of the stirrup is pre-bent into a hook shape of about 135°, and the other end is bent to a state of about 90° to be bent. During installation, when both ends of the stirrups are hooked on the corresponding main bars, the end of the stirrup to be bent is bent to about 135° using pliers or other tools.

[0003] In the process of bending stirrups, due to the small spacing between adjacent main bars and the small operating space, it is difficult for workers to obtain a labor-saving operating angle when using existing bending tools. Especially when the end of the stirrup to be bent is located adjacent to the steel cage and an obstacle (such as a wall, tunnel inner wall, etc.), workers need to hold the pliers through the steel cage and then perform the bending operation. They need to adjust the operating angle by reciprocating through the steel cage many times, which is extremely inconvenient, time-consuming, labor-intensive, and has low work efficiency. Summary of the invention

[0004] In view of the defects in the prior art, the ratchet reciprocating steel bar bending tool and its use method provided by the present invention can at least solve the technical problems that the existing steel bar bending tools are difficult to adjust the operating angle, time-consuming and labor-intensive, and have low work efficiency when performing bending operations in narrow spaces.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0006] According to a first aspect of the present invention, a ratchet reciprocating steel bar bending tool is provided, comprising a gripping portion and a head arranged at one end of the gripping portion; a driving member is rotatably connected to the head, and a limit assembly for limiting the reverse rotation of the driving member is also provided in the head; a connecting head is provided at one end of the driving member, a sleeve is installed on the connecting head, a connecting sleeve is provided on the outer wall of the sleeve, the connecting sleeve and the connecting head are detachably connected, and the connecting sleeve and the connecting head rotate synchronously with the driving member, and the inner hole of the sleeve is used to insert the steel bar to be bent.

[0007] Optionally, a clamping assembly is also provided in the driving member, and the clamping assembly at least includes a pressure strip which is arranged in a retractable manner in the driving member, and the pressure strip can extend into the sleeve after passing through the connecting head and the side wall of the sleeve; a pressing handle is also provided on the holding portion, and the middle part of the pressing handle is hinged to the middle part of the holding portion, one end of the pressing handle extends to the side of the tail end of the holding portion, and the other end of the pressing handle extends to the side of the head away from the sleeve; a pressure rod is provided at the end of the pressing handle facing the head, and the pressure rod approaches or moves away from the head with the pivoting of the pressing handle; when the pressure rod moves toward the head, it contacts and pushes the pressure strip into the sleeve, and acts together with the inner wall of the inner hole of the sleeve away from the connecting sleeve to clamp the steel bar to be bent.

[0008] Optionally, the clamping assembly also includes a pressure plate, and a receiving groove for accommodating the pressure plate is provided on the surface of the driving member away from the sleeve; there are two pressure strips, which are respectively connected to the pressure plates, and the two pressure strips are symmetrically arranged about the axis of the inner hole of the sleeve. When the pressure rod moves toward the head, it contacts and pushes the pressure plate, thereby driving the two pressure strips to extend into the sleeve, and form a three-point clamp with the inner wall of the inner hole of the sleeve away from the connecting sleeve.

[0009] Optionally, a first spring is provided between the side of the pressing handle facing the rear end of the gripping portion and the rear end of the gripping portion, and the first spring is compressed when the pressing rod moves toward the head.

[0010] Optionally, a second spring is provided between the pressure plate and the receiving groove, and the second spring is compressed when the pressure rod moves toward the head.

[0011] Optionally, the pressure strip is a flat plate-like structure, and the width direction of the pressure strip is consistent with the axial direction of the inner hole of the sleeve.

[0012] Optionally, a fixing strip is provided on the inner wall of the inner hole of the sleeve away from the connecting sleeve, and the extending direction of the fixing strip is consistent with the axial direction of the inner hole of the sleeve.

[0013] Optionally, the pressure rod is connected to the pressing handle via a connecting rod, the pressure rod and the connecting rod are hinged, and the connecting rod and the pressing handle are hinged.

[0014] Optionally, a sealing plate is detachably mounted on the surface of the driving member on one side away from the sleeve, so as to close the receiving groove and prevent the pressure plate and the pressure strip from falling out, and the pressure rod penetrates the sealing plate and extends into the receiving groove.

[0015] A second aspect of the present invention provides a method for using a ratchet reciprocating steel bar bending tool, which is applied to any of the ratchet reciprocating steel bar bending tools and the method for using the same, comprising the following steps:

[0016] Select the extension angle and pivot direction of the grip according to the on-site operating space;

[0017] Adjusting the relative angle between the sleeve and the gripping portion based on the selected insertion angle of the gripping portion and the current bending angle of the steel bar to be bent;

[0018] Adjusting the limiter to limit the driving member from rotating clockwise or counterclockwise based on the selected pivoting direction of the gripping portion;

[0019] Put the sleeve on the steel bar to be bent and swing the holding part along the selected pivot direction. When the holding part pivots to a limit close to the operating space, pivot the holding part in the opposite direction to regain the pivot space, and then swing the holding part along the selected pivot direction again. Repeat the pivoting for multiple times until the steel bar is bent to a predetermined bending angle.

[0020] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0021] The ratchet reciprocating steel bar bending tool provided by the present invention comprises a gripping part and a head arranged at one end of the gripping part; a driving part is rotatably connected in the head, and a limit assembly for limiting the reverse rotation of the driving part is also arranged in the head; a connecting head is arranged at one end of the driving part, a sleeve is installed on the connecting head, a connecting sleeve is arranged on the outer wall of the sleeve, the connecting sleeve and the connecting head are detachably connected, and the connecting sleeve and the connecting head rotate synchronously with the driving part, and the inner hole of the sleeve is used to insert the steel bar to be bent. The present application realizes the unidirectional rotation movement of the driving part through the limiter, so that the gripping part can bend the steel bar to be bent inserted in the sleeve to a predetermined bending angle through reciprocating small-angle pivoting, thereby realizing the steel bar bending operation at the construction site, especially for the steel bar bending operation with limited operating space, which is simple to operate, saves time and effort, and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a ratchet reciprocating steel bar bending tool and a method of using the same;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the head of a ratchet reciprocating steel bar bending tool and a method of using the tool;

[0025] Figure 3 is a schematic diagram of the three-dimensional structure of the driving member;

[0026] Figure 4 A three-dimensional structural schematic diagram of another embodiment of a ratchet reciprocating steel bar bending tool and a method of using the same;

[0027] Figure 5 for Figure 4 A schematic diagram of the head structure of a ratchet reciprocating steel bar bending tool and a method of using the tool;

[0028] Figure 6 for Figure 5 A cross-sectional view of

[0029] Figure 7 for Figure 4 An exploded view of a driving member of a ratchet reciprocating steel bar bending tool and a method of using the same;

[0030] Figure 8 It is a schematic diagram of the structure when the clamping assembly is in a static position;

[0031] Fig. 9 It is a schematic diagram of the structure when the clamping assembly is in the working position;

[0032] Fig.10 This is a schematic diagram simulating the state of steel bars being bent at a construction site;

[0033] Fig.11 for Fig.10 The enlarged view of point A in the middle;

[0034] Fig.12 This is a schematic diagram simulating the steel bars being bent into place at the construction site;

[0035] Fig.13 for Fig.12 The enlarged view of point B in the middle;

[0036] Reference numerals:

[0037] 1- grip part, 2- head, 3- sleeve, 4- pressing handle, 5- clamping assembly, 6- steel bar to be bent;

[0038] 21-driving member, 22-limiting member, 23-sealing plate, 31-connecting sleeve, 32-through hole, 33-fixing strip, 41-first spring, 42-pressure rod, 43-connecting rod, 51-pressure plate, 52-pressure strip, 53-second spring;

[0039] 211 - ratchet, 212 - connector, 213 - receiving groove, 214 - guide hole. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0041] Embodiment 1

[0042] See also Figure 1-3 This embodiment provides a ratchet reciprocating steel bar bending tool, comprising a gripping portion 1 and a head 2 disposed at one end of the gripping portion 1; a driving member 21 is rotatably connected in the head 2, and a limiter assembly for limiting the reverse rotation of the driving member 21 is also disposed in the head 2. Specifically, Figure 3 As shown, the outer periphery of the driving member 21 is evenly distributed with ratchet teeth 211 or a ratchet wheel, and the limit member 22 and the ratchet teeth 211 or ratchet wheel on the outer periphery of the driving member 21 form a ratchet mechanism, so that the driving member 21 is only allowed to rotate in any selected direction of the forward direction or the reverse direction (clockwise or counterclockwise) through the ratchet mechanism. Among them, the structure of the limit member 22 can adopt the combination of the reversing element 30 and the top control element 40 disclosed in the Chinese utility model patent with publication number CN201399754Y. The driving member 21 is provided with a connector 212 at one end, and a sleeve 3 is installed on the connector 212. The outer wall of the sleeve 3 is provided with a connecting sleeve 31, and the connecting sleeve 31 is detachably connected to the connecting head 212, and the connecting sleeve 31 and the connecting head 212 rotate synchronously with the driving member 21, and the inner hole of the sleeve 3 is used to pass the steel bar 6 to be bent. In order to realize the detachable connection between the connecting sleeve 31 and the connecting head 212, the attachment of the Chinese invention patent with publication number CN102101277B can be used. Figure 2-4 The disclosed structural form can also be connected by screws.

[0043] See Figure 10-13 (In the figure, the bending position of the steel bar to be bent is the adjacent position of the steel cage and the wall, and the wall is not drawn in the figure). The method of using the ratchet reciprocating steel bar bending tool disclosed in this embodiment is as follows:

[0044] The extension angle and pivot direction of the holding portion 1 are selected according to the on-site operating space; the relative angle between the sleeve 3 and the holding portion 1 is adjusted based on the selected extension angle of the holding portion 1 and the current bending angle of the steel bar 6 to be bent; the limit member 22 is adjusted based on the selected pivot direction of the holding portion 1 to limit the clockwise or counterclockwise rotation of the driving member 21; the sleeve 3 is put on the steel bar 6 to be bent and the holding portion 1 is swung along the selected pivot direction, and when the holding portion 1 is pivoted to a point close to the limit of the operating space, the holding portion 1 is pivoted in the opposite direction to regain the pivot space, and then the holding portion 1 is swung along the selected pivot direction again, and the pivoting is repeated multiple times until the steel bar is bent to a predetermined bending angle. That is, when the holding part 1 pivots in the forward direction, the sleeve 3 does not rotate relative to the holding part 1 under the action of the limit member 22, so as to complete the bending of the steel bar; and when pivoting in the reverse direction, the sleeve 3 rotates relative to the holding part 1, so that the holding part 1 regains the pivot space, and can then swing along the selected pivot direction.

[0045] The present invention realizes unidirectional rotational movement of the driving member through a limit member, so that the gripping part can bend the steel bar to be bent in the sleeve to a predetermined bending angle through reciprocating small-angle pivoting, thereby realizing the steel bar bending operation at the construction site, especially for the steel bar bending operation with limited operating space, the operation is simple, time-saving and labor-saving, and the work efficiency is high.

[0046] Embodiment 2

[0047] See also Figure 4-9 This embodiment is a further improvement of the first embodiment. In order to facilitate the passage of the steel bar 6 to be bent in the sleeve 3, the inner hole diameter of the sleeve 3 is usually set to be larger than the diameter of the steel bar 6 to be bent. When the gripping portion 1 is pivoted, the sleeve 3 and the steel bar 6 to be bent are prone to relative sliding, causing the force application point to deviate from the ideal position, and even the sleeve 3 may slip out of the steel bar and cause a safety accident, such as the operator's arm hitting the steel cage due to failure to retract the force in time. Therefore, it is necessary to further design a clamping structure so that the relative position of the sleeve 3 and the steel bar 6 to be bent can be locked during pivoting. Specifically, a clamping assembly 5 is also provided in the driving member 21, and the clamping assembly 5 at least includes a pressure strip 52 that is retractably arranged in the driving member 21, and the pressure strip 52 can extend into the sleeve 3 after passing through the connector 212 and the side wall of the sleeve 3. The gripping portion 1 is also provided with a pressing handle 4, the middle part of which is hinged to the middle part of the gripping portion 1, one end of which extends to one side of the rear end of the gripping portion 1, and the other end of which extends to the side of the head 2 away from the sleeve 3. The pressing handle 4 is provided with a pressing rod 42 at the end facing the head 2, and the pressing rod 42 moves closer to or away from the head 2 as the pressing handle 4 pivots; when the pressing rod 42 moves toward the head 2, it contacts and pushes the pressing strip 52 into the sleeve 3, and acts together with the inner wall of the inner hole of the sleeve 3 away from the connecting sleeve 31 to clamp the steel bar 6 to be bent. Obviously, the clamping assembly in this embodiment can also clamp steel bars of different diameters.

[0048] Preferably, the pressure strip 52 is provided with an arc plate at one end facing the sleeve 3, the axial direction of the arc plate is consistent with the axial direction of the sleeve 3, and the pressure strip 52 rotates synchronously with the driving member 21, the outer side of the arc plate is connected to the end of the pressure strip 52, and the inner side of the arc plate is used to work together with the inner wall of the inner hole of the sleeve 3 away from the connecting sleeve 31 to clamp the steel bar 6 to be bent. Optionally, the pressing handle 4 is provided with a first spring 41 between the side facing the rear end of the gripping portion 1 and the rear end of the gripping portion 1, and the first spring 41 is compressed when the pressure rod 42 moves toward the head 2, so that when the pressing force of the pressing handle 4 is removed, the pressure rod 42 is moved away from the head 2 under the action of the elastic force, so that the pressure strip 52 can be removed from the inner hole of the sleeve 3, so that the steel bar 6 to be bent can pass through the sleeve 3.

[0049] Embodiment 3

[0050] See also Figure 7-9 , this embodiment is a further improvement of the second embodiment, in which an arc plate is no longer provided at the end of the pressure strip 52. Specifically, the clamping assembly 5 also includes a pressure plate 51, and a receiving groove 213 for accommodating the pressure plate 51 is provided on the surface of the driving member 21 on the side away from the sleeve 3; there are two pressure strips 52 and they are respectively connected to the pressure plate 51, and the two pressure strips 52 are symmetrically arranged about the axis of the inner hole of the sleeve 3. When the pressure rod 42 moves toward the head 2, it contacts and pushes the pressure plate 51, thereby driving the two pressure strips 52 to extend into the sleeve 3, and the two pressure strips 52 form a three-point clamping of the steel bar 6 to be bent with the inner wall of the inner hole of the sleeve 3 away from the connecting sleeve 31. Preferably, the pressure strip 52 is a flat plate-like structure, and the width direction of the pressure strip 52 is consistent with the axial direction of the inner hole of the sleeve 3. The flat plate-like structure makes the pressure strip 52 linearly contact with the steel bar 6 to be bent, with a large contact area and more stable clamping. Optionally, a fixing strip 33 is provided on the inner wall of the inner hole of the sleeve 3 away from the connecting sleeve 31, and the extending direction of the fixing strip 33 is consistent with the axial direction of the inner hole of the sleeve 3. The two pressure strips 52 work together with the fixing strip 33 to clamp the steel bars 6 to be bent.

[0051] In the third embodiment, a first spring 41 is provided between the side of the pressing handle 4 facing the rear end of the gripping portion 1 and the rear end of the gripping portion 1. When the pressing rod 42 moves toward the head 2, the first spring 41 is compressed, so that when the pressing force of the pressing handle 4 is removed, the pressing rod 42 is moved away from the head 2 under the elastic force of the first spring 41, so that the pressure strip 52 can be removed from the inner hole of the sleeve 3, so that the steel bar 6 to be bent can pass through the sleeve 3. A second spring 53 is provided between the pressing plate 51 and the receiving groove 213. When the pressing rod 42 moves toward the head 2, the second spring 53 is compressed, so that when the pressing rod 42 moves away from the head 2, the pressure strip 52 is removed from the inner hole of the sleeve 3 under the elastic force of the second spring 53.

[0052] Embodiment 4

[0053] See also Figure 4-9 This embodiment aims to optimize the second and third embodiments. To ensure that the pressure rod 42 transmits force uniformly to the pressure strip 52 or the pressure plate 51, it should be ensured that the pressure rod 42 only reciprocates along its axial direction during movement, and ensure that the pressure rod 42 is coaxial with the driving member 21. The following technical solutions can be specifically adopted:

[0054] The pressing rod 42 is connected to the pressing handle 4 through a connecting rod 43, and the pressing rod 42 is hinged to the connecting rod 43, and the connecting rod 43 is hinged to the pressing handle 4. At this time, if the receiving groove 213 is a circular groove (for the shape of the pressure strip 52 in the second embodiment), the diameter of the pressing rod 42 is adapted to the receiving groove 213 to limit and guide the movement direction of the pressing rod 42; if the receiving groove 213 is a flat groove (for the shape of the pressure plate 51 in the third embodiment), arc grooves should be further provided on both side walls of the receiving groove 213, and the diameter of the pressing rod 42 is adapted to the arc groove to limit and guide the movement direction of the pressing rod 42. Preferably, a sealing plate 23 is detachably installed on the surface of the driving member 21 on the side away from the sleeve 3, so as to close the receiving groove 213 and prevent the pressure plate 51 and the pressure strip 52 from falling out. The pressure rod 42 penetrates the sealing plate 23 and extends into the receiving groove 213. The through hole on the sealing plate 23 is adapted to the diameter of the pressure rod 42 to limit and guide the movement direction of the pressure rod 42.

[0055] It is worth noting that in the above embodiment, since the pressure rod 42 is difficult to be assembled with the pressing handle 4 in a rotational connection, and the pressure strip 52 or the pressure plate 51 needs to rotate with the driving member to ensure reliable clamping of the steel bar 6 to be bent, the pressure rod 42 can also be movably connected with the pressure strip 52 or the pressure plate 51 in a rotational connection. However, if the pressure rod 42 is rotationally connected with the pressure strip 52 or the pressure plate 51, it will lead to complicated structure. Therefore, it is preferred that the pressure rod 42 and the pressure strip 52 or the pressure plate 51 are connected by impact contact or abutment, so that whether the pressure strip 52 or the pressure plate 51 rotates does not affect the pressure rod 42 coaxial with the driving member 21.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A ratchet reciprocating steel bar bending tool, characterized in that: The invention comprises a gripping portion (1) and a head portion (2) arranged at one end of the gripping portion (1); a driving member (21) is rotatably connected in the head portion (2), and a limit assembly (22) for limiting the reverse rotation of the driving member (21) is also arranged in the head portion (2); a connecting head (212) is arranged at one end of the driving member (21), a sleeve (3) is mounted on the connecting head (212), a connecting sleeve (31) is arranged on the outer wall of the sleeve (3), the connecting sleeve (31) and the connecting head (212) are detachably connected, and the connecting sleeve (31) and the connecting head (212) rotate synchronously with the driving member (21), and the inner hole of the sleeve (3) is used for inserting a steel bar (6) to be bent; The driving member (21) is further provided with a clamping assembly (5), the clamping assembly (5) at least comprising a pressure strip (52) which is arranged in a telescopic manner in the driving member (21), and the pressure strip (52) can extend into the sleeve (3) after penetrating the connecting head (212) and the side wall of the sleeve (3); the holding portion (1) is further provided with a pressing handle (4), the middle portion of the pressing handle (4) is hinged to the middle portion of the holding portion (1), and one end of the pressing handle (4) extends to one side of the rear end of the holding portion (1). The other end of the pressing handle (4) extends to the side of the head (2) away from the sleeve (3); the pressing handle (4) is provided with a pressing rod (42) at the end facing the head (2), and the pressing rod (42) moves closer to or away from the head (2) as the pressing handle (4) pivots; when the pressing rod (42) moves toward the head (2), it contacts and pushes the pressing strip (52) into the sleeve (3), and cooperates with the inner wall of the inner hole of the sleeve (3) away from the connecting sleeve (31) to clamp the steel bar (6) to be bent; The clamping assembly (5) further comprises a pressing plate (51), and a receiving groove (213) for accommodating the pressing plate (51) is provided on a surface of the driving member (21) on a side away from the sleeve (3); there are two pressing strips (52) respectively connected to the pressing plate (51), and the two pressing strips (52) are symmetrically arranged with respect to the axis of the inner hole of the sleeve (3); when the pressing rod (42) moves toward the head (2), it contacts and pushes the pressing plate (51), thereby driving the two pressing strips (52) to extend into the sleeve (3), and form a three-point clamping with the inner wall of the inner hole of the sleeve (3) away from the connecting sleeve (31); A first spring (41) is provided between the side of the pressing handle (4) facing the rear end of the gripping portion (1) and the rear end of the gripping portion (1), and when the pressing rod (42) moves toward the head (2), the first spring (41) is compressed; The pressing rod (42) is connected to the pressing handle (4) via a connecting rod (43), the pressing rod (42) and the connecting rod (43) are hinged, and the connecting rod (43) and the pressing handle (4) are hinged.

2. The ratchet reciprocating steel bar bending tool according to claim 1, characterized in that: A second spring (53) is provided between the pressing plate (51) and the receiving groove (213), and the second spring (53) is compressed when the pressing rod (42) moves toward the head (2).

3. The ratchet reciprocating steel bar bending tool according to claim 1 or 2, characterized in that: The pressure strip (52) is a flat plate-shaped structure, and the width direction of the pressure strip (52) is consistent with the axial direction of the inner hole of the sleeve (3).

4. The ratchet reciprocating steel bar bending tool according to claim 3, characterized in that: A fixing strip (33) is provided on the inner wall of the inner hole of the sleeve (3) at a side away from the connecting sleeve (31), and the extending direction of the fixing strip (33) is consistent with the axial direction of the inner hole of the sleeve (3).

5. The ratchet reciprocating steel bar bending tool according to claim 1 or 2, characterized in that: A sealing plate (23) is detachably mounted on the surface of the driving member (21) on one side away from the sleeve (3) so as to seal the receiving groove (213) and prevent the pressing plate (51) and the pressing strip (52) from falling out. The pressing rod (42) penetrates the sealing plate (23) and extends into the receiving groove (213).

6. A method for using a ratchet reciprocating steel bar bending tool, applied to the ratchet reciprocating steel bar bending tool as claimed in any one of claims 1 to 5, characterized in that: The steps include: The extending angle and the pivoting direction of the gripping portion (1) are selected according to the on-site operation space; Adjusting the relative angle between the sleeve (3) and the gripping portion (1) based on the selected insertion angle of the gripping portion (1) and the current bending angle of the steel bar (6) to be bent; Based on the selected pivoting direction of the gripping portion (1), the limiting member is adjusted to limit the rotation direction of the driving member (21); The sleeve (3) is put on the steel bar (6) to be bent and the holding portion (1) is swung along a selected pivoting direction. When the holding portion (1) is pivoted to a position close to the limit of the operating space, the holding portion (1) is pivoted in the opposite direction to regain the pivoting space. The holding portion (1) is then pivoted again along the selected pivoting direction and the pivoting is repeated multiple times until the steel bar is bent to a predetermined bending angle.

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