Portable hand-held steel bar bender

Abstract

The utility model relates to a kind of portable handheld reinforcing bar bending machine, comprising: hydraulic cylinder, bending machine body, connecting rod transmission assembly and bending assembly;The hydraulic cylinder is fixedly arranged at one end of the bending machine body;The bending assembly is fixedly arranged at the other end of the bending machine body;The connecting rod transmission assembly is arranged in the bending machine body;Two ends of the connecting rod transmission assembly are respectively connected with the hydraulic cylinder and the bending assembly;The hydraulic cylinder can drive the bending assembly to work by the connecting rod transmission assembly;The bending assembly can be stuck to reinforcing bar, under the driving of the hydraulic cylinder, reinforcing bar is bent to the angle required.The portable handheld reinforcing bar bending machine provided by the utility model adopts hydraulic split design, handheld part omits power integrated mechanism, weight is significantly reduced, it is convenient for operator to carry and use, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to a convenient handheld rebar bending machine. Background Technology

[0002] In the field of prefabricated construction, the MiC process requires the installation of rebar extensions, approximately 500mm in length, with a diameter of 12-16mm and a spacing of 60-100mm. One step in the production process involves bending the rebar. Traditionally, this is done manually using a sleeve to bend the rebar at a certain angle, then using a self-made three-jaw chuck to hold it at the base and continue bending to 90°. This method is extremely labor-intensive and time-consuming. Existing handheld electric rebar bending machines on the market weigh over 15kg, are inconvenient to operate, and have excessively large actuators that cannot accommodate the rebar spacing constraints. Furthermore, traditional equipment has a complex transmission structure, low transmission efficiency, and insufficient precision in controlling the bending angle, making it difficult to meet the precision requirements of modern construction for rebar processing. Therefore, there is an urgent need to design a lightweight, high-efficiency, and precise handheld rebar bending machine. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In response to the existing technical problems, this utility model provides a convenient handheld rebar bending machine to solve the problems of heavy weight, low transmission efficiency and inaccurate bending angle in existing handheld rebar bending machines.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A portable handheld rebar bending machine includes: a hydraulic cylinder, a bending machine body, a linkage transmission assembly, and a bending assembly;

[0008] The hydraulic cylinder is fixedly installed at one end of the bending machine body;

[0009] The bending assembly is fixedly installed at the other end of the bending machine body;

[0010] The connecting rod transmission assembly is disposed within the bending machine body;

[0011] The two ends of the linkage transmission assembly are respectively connected to the hydraulic cylinder and the bending assembly;

[0012] The hydraulic cylinder can drive the bending component to work through the connecting rod transmission assembly;

[0013] The bending assembly can hold the reinforcing bar and, driven by the hydraulic cylinder, bend the reinforcing bar to the required angle.

[0014] Preferably, one end of the bending machine body is a working part, and the other end is a flange connection part;

[0015] The middle part of the bending machine body is the connecting rod guide section;

[0016] The bending assembly is disposed on the working part;

[0017] The hydraulic cylinder is connected to the flange connection and is driven by the connecting rod transmission assembly.

[0018] One end of the connecting rod transmission assembly is disposed in the working part and connected to the bending assembly;

[0019] The other end of the connecting rod transmission assembly is located in the connecting rod guide and is connected to the hydraulic cylinder.

[0020] Preferably, the linkage drive assembly includes: a connecting rod, a connecting rod pin, a toothed connecting rod, and a guide shaft;

[0021] One end of the guide shaft is connected to the fisheye connector of the hydraulic cylinder, and the other end is connected to one end of the connecting rod;

[0022] The other end of the connecting rod is connected to one end of the toothed connecting rod by means of the connecting rod pin;

[0023] The toothed connecting rod is rotatably mounted on the working part and is connected to the bending assembly in a transmission manner.

[0024] Preferably, the side wall of the connecting rod guide is provided with an arc-shaped guide groove;

[0025] The guide shaft cooperates with the arc guide groove, and under the drive of the hydraulic cylinder, one end of the connecting rod can move along the arc guide groove.

[0026] Preferably, the bending assembly includes: an intermediate gear, a gear, a positioning claw, and a bending arm;

[0027] The intermediate gear, the gear, the positioning claw, and the bending arm are all mounted on the working part;

[0028] The intermediate gear meshes with the gear;

[0029] The gear is connected to the bent arm via a key;

[0030] The positioning claw is fixed to the working part.

[0031] Preferably, the toothed end of the toothed connecting rod meshes with the intermediate gear for transmission, and can drive the gear to rotate through the intermediate gear;

[0032] The gear can drive the curved arm to rotate via a key;

[0033] The positioning claw can hold the reinforcing bar, and under the rotation of the bending arm, the reinforcing bar can be bent to the required angle.

[0034] Preferably, the bending machine body is provided with a handle;

[0035] The handle is located on the side of the connecting rod guide and is fixedly connected to the connecting rod guide.

[0036] Preferably, the hydraulic cylinder can be connected to a hydraulic station via a hydraulic oil pipe; the hydraulic station is located on a working platform.

[0037] (III) Beneficial Effects

[0038] The portable handheld rebar bending machine provided in this application has the following outstanding advantages:

[0039] Adopting a hydraulic split design, the handheld part eliminates the power integration mechanism, significantly reducing weight and making it easier for operators to carry and use, thus reducing labor intensity.

[0040] The linkage drive assembly, in conjunction with the arc guide groove, ensures the accuracy and stability of the transmission, making the bending angle control more precise and improving the quality of steel bar bending.

[0041] Gear transmission structures have high transmission efficiency, enabling the hydraulic cylinder's power to be transmitted efficiently to the bending components, thus improving the equipment's working efficiency.

[0042] The handle is designed according to ergonomic principles, making it comfortable to operate and convenient for long-term work.

[0043] The structure is reasonably designed, the connections of each component are reliable, maintenance is convenient, and the service life is long. Attached Figure Description

[0044] Figure 1 A structural schematic diagram of a convenient handheld rebar bending machine provided by this utility model;

[0045] Figure 2 A structural schematic diagram of a convenient handheld rebar bending machine provided by this utility model;

[0046] Figure 3 This utility model provides a usage scenario diagram of a convenient handheld rebar bending machine.

[0047] [Explanation of Labels in the Attached Images]

[0048] 1: Hydraulic cylinder; 2: Bending machine body; 3: Connecting rod; 4: Connecting rod pin; 5: Toothed connecting rod; 6: Gear; 7: Intermediate gear; 8: Guide shaft; 9: Handle; 10: Positioning claw; 11: Bending arm; 12: Rebar; 13: Working platform. Detailed Implementation

[0049] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Example 1

[0051] like Figures 1-3 As shown: This embodiment discloses a portable handheld rebar bending machine, including: a hydraulic cylinder 1, a bending machine body 2, a connecting rod transmission assembly, and a bending assembly.

[0052] Specifically, the hydraulic cylinder 1 is fixedly disposed at one end of the bending machine body 2; the bending assembly is fixedly disposed at the other end of the bending machine body 2; and the connecting rod transmission assembly is disposed within the bending machine body.

[0053] The two ends of the linkage transmission assembly are respectively connected to the hydraulic cylinder 1 and the bending assembly; the hydraulic cylinder 1 can drive the bending assembly to work through the linkage transmission assembly; the bending assembly can hold the reinforcing bar 12 and bend the reinforcing bar 12 to the required angle under the drive of the hydraulic cylinder 1.

[0054] In this embodiment, the handheld rebar bending machine adopts a hydraulic split type, with the handheld part as follows: Figure 1 , Figure 2 As shown, the hydraulic unit is connected to the hydraulic station via hydraulic oil pipes. The hydraulic station is placed on the work platform 13. The handheld part eliminates the power integration mechanism, thus reducing its weight.

[0055] Specifically, one end of the bending machine body is a working section, and the other end is a flange connection section; the middle of the bending machine body 2 is a connecting rod guide section. The bending assembly is disposed on the working section; the hydraulic cylinder 1 is connected to the flange connection section and is drivenly connected to the connecting rod transmission assembly. One end of the connecting rod transmission assembly is disposed on the working section and connected to the bending assembly; the other end of the connecting rod transmission assembly is disposed on the connecting rod guide section and connected to the hydraulic cylinder 1.

[0056] The linkage transmission assembly in this embodiment includes: a connecting rod 3, a connecting rod pin 4, a toothed connecting rod 5, and a guide shaft 8. One end of the guide shaft 8 is connected to the spherical connector of the hydraulic cylinder 1, and the other end is connected to one end of the connecting rod 3. The other end of the connecting rod 3 is connected to one end of the toothed connecting rod 5 via the connecting rod pin 4; the toothed connecting rod 5 is rotatably mounted on the working part and is connected to the bending assembly for transmission.

[0057] In this embodiment, the side wall of the connecting rod guide is provided with an arc guide groove; the guide shaft 8 cooperates with the arc guide groove, and under the drive of the hydraulic cylinder 1, one end of the connecting rod 3 can move along the arc guide groove.

[0058] The bending assembly includes an intermediate gear 7, a gear 6, a positioning claw 10, and a bending arm 11. The intermediate gear 7, the gear 6, the positioning claw 10, and the bending arm 11 are all mounted on the working part. The intermediate gear 7 meshes with the gear 6; the gear 6 is connected to the bending arm 11 via a key; and the positioning claw 10 is fixed to the working part.

[0059] The toothed end of the toothed connecting rod 5 meshes with the intermediate gear 7 for transmission, and can drive the gear 6 to rotate through the intermediate gear 7; the gear 6 can drive the bending arm 11 to rotate through a key; the positioning claw 10 can hold the reinforcing bar 12, and under the rotation of the bending arm 11, the reinforcing bar 12 can be bent to the required angle.

[0060] In this embodiment, the bending machine body 2 is equipped with a handle 9; the handle 9 is located on the side of the connecting rod guide and is fixedly connected to the connecting rod guide. The hydraulic cylinder 1 can be connected to the hydraulic station through a hydraulic oil pipe; the hydraulic station is located on the working platform 13.

[0061] In practical applications, the handheld part structure includes a hydraulic cylinder 1, a bending machine body 2, a connecting rod 3, a connecting rod pin 4, a toothed connecting rod 5, a gear 6, an intermediate gear 7, a guide shaft 8, a handle 9, a positioning claw 10, and a bending arm 11.

[0062] Hydraulic cylinder 1 is connected to the end flange of bending machine body 2. The fisheye connector of hydraulic cylinder 1 is connected to connecting rod 3 through guide shaft 8. Guide shaft 8 cooperates with the arc guide groove provided in bending machine body 2 for limiting and guiding. Toothed connecting rod 5 is connected to connecting rod 3 through connecting rod pin 4. Toothed connecting rod 5 meshes with intermediate gear 7. Intermediate gear 7 meshes with gear 6. Bending arm 11 is connected to gear 6 through a key. Positioning claw 10 is fixed above bending arm 11. The piston rod of hydraulic cylinder 1 extends forward, and connecting rod 4 drives toothed connecting rod 5 to rotate, thereby driving gear 6 to rotate. Bending arm 11 rotates around positioning claw 10 under the action of gear 6.

[0063] like Figure 3 As shown, during use, the positioning claw 10 clamps the reinforcing bar, and under the rotation of the bending arm 11, the reinforcing bar can be bent to the required angle.

[0064] Example 2

[0065] like Figures 1-3 As shown: This embodiment also provides a portable handheld rebar bending machine, including a hydraulic cylinder 1, a bending machine body 2, a connecting rod transmission assembly, and a bending assembly.

[0066] Specifically, the hydraulic cylinder 1 is fixedly disposed at one end of the bending machine body 2; the bending assembly is fixedly disposed at the other end of the bending machine body 2; and the connecting rod transmission assembly is disposed inside the bending machine body 2. Both ends of the connecting rod transmission assembly are connected to the hydraulic cylinder 1 and the bending assembly, respectively; the hydraulic cylinder 1 can drive the bending assembly to work through the connecting rod transmission assembly; the bending assembly can clamp the reinforcing bar 12 and, under the drive of the hydraulic cylinder 1, bend the reinforcing bar 12 to the required angle.

[0067] The handheld rebar bending machine in this embodiment adopts a hydraulic split structure. The handheld part is connected to the hydraulic station via hydraulic oil pipes, and the hydraulic station is placed on the work platform 13. This design eliminates the need for a power integration mechanism in the handheld part, thereby greatly reducing the weight and improving the portability of the equipment and the comfort of the operator.

[0068] Furthermore, one end of the bending machine body 2 is a working part, and the other end is a flange connection part; the middle of the bending machine body 2 is a connecting rod guide part. The bending assembly is disposed on the working part; the hydraulic cylinder 1 is connected to the flange connection part and is drivenly connected to the connecting rod transmission assembly. One end of the connecting rod transmission assembly is disposed on the working part and connected to the bending assembly; the other end of the connecting rod transmission assembly is disposed on the connecting rod guide part and connected to the hydraulic cylinder 1.

[0069] The linkage drive assembly includes a connecting rod 3, a connecting rod pin 4, a toothed connecting rod 5, and a guide shaft 8. One end of the guide shaft 8 is connected to the spherical connector of the hydraulic cylinder 1, and the other end is connected to one end of the connecting rod 3. The other end of the connecting rod 3 is connected to one end of the toothed connecting rod 5 via the connecting rod pin 4; the toothed connecting rod 5 is rotatably mounted on the working part and is drively connected to the bending assembly.

[0070] To ensure the motion accuracy and stability of the linkage transmission assembly, an arc-shaped guide groove is provided on the side wall of the linkage guide portion. The guide shaft 8 cooperates with the arc-shaped guide groove, and under the drive of the hydraulic cylinder 1, one end of the linkage 3 can move along the arc-shaped guide groove. This design not only serves as a limit, but also ensures the accuracy of the trajectory of the linkage 3, thereby guaranteeing precise control of the bending angle.

[0071] The bending assembly includes an intermediate gear 7, a gear 6, a positioning claw 10, and a bending arm 11. The intermediate gear 7, the gear 6, the positioning claw 10, and the bending arm 11 are all disposed on the working part. The intermediate gear 7 meshes with the gear 6; the gear 6 is connected to the bending arm 11 via a key; and the positioning claw 10 is fixed to the working part.

[0072] The toothed end of the toothed connecting rod 3 meshes with the intermediate gear 7, and can drive the gear 6 to rotate via the intermediate gear 7; the gear 6 can drive the bending arm 11 to rotate via a key; the positioning claw 10 can hold the reinforcing bar 12, and under the rotation of the bending arm 11, the reinforcing bar 12 can be bent to the required angle. This gear transmission structure has the advantages of high transmission efficiency and stable transmission ratio, which can ensure the accuracy and consistency of the bending angle of the reinforcing bar 12.

[0073] To facilitate operator handling, the bending machine body 2 is equipped with a handle 9. The handle 9 is located on the side of the connecting rod guide and is fixedly connected to the connecting rod guide. The position of the handle 9 is reasonably designed and conforms to ergonomic principles, which can effectively reduce operator fatigue.

[0074] In practical applications, the handheld part structure includes a hydraulic cylinder 1, a bending machine body 2, a connecting rod 3, a connecting rod pin 4, a toothed connecting rod 5, a gear 6, an intermediate gear 7, a guide shaft 8, a handle 9, a positioning claw 10, and a bending arm 11.

[0075] Hydraulic cylinder 1 is connected to the end flange of bending machine body 2. The fisheye connector of hydraulic cylinder 1 is connected to connecting rod 3 through guide shaft 8. Guide shaft 8 cooperates with the arc guide groove provided in bending machine body 2 for limiting and guiding. Toothed connecting rod 5 is connected to connecting rod 3 through connecting rod pin 4. Toothed connecting rod 5 meshes with intermediate gear 7. Intermediate gear 7 meshes with gear 6. Bending arm 11 is connected to gear 6 through key. Positioning claw 10 is fixed above bending arm 11.

[0076] Working principle

[0077] When bending of the reinforcing bars is required, the operator holds the handle 9 and uses the positioning claw 10 to hold the reinforcing bar 12 to be bent. Then, the hydraulic station supplies pressurized oil to the hydraulic cylinder 1 through the hydraulic oil pipe, and the piston rod of the hydraulic cylinder 1 extends forward. The extension movement of the piston rod is transmitted to the guide shaft 8 through the fisheye joint. Since the guide shaft 8 is engaged with the arc guide groove on the bending machine body 2, the guide shaft 8 moves along a predetermined trajectory within the arc guide groove, thereby driving the connecting rod 3 to move.

[0078] The movement of connecting rod 3 is transmitted to toothed connecting rod 5 via connecting rod pin 4, causing toothed connecting rod 5 to rotate around its fixed point on the working part. The rotation of toothed connecting rod 5 drives the intermediate gear 7, which meshes with it, to rotate, and the intermediate gear 7 in turn drives the gear 6, which meshes with it, to rotate. Gear 6 is connected to curved arm 11 via a key, so the rotation of gear 6 drives curved arm 11 to rotate around positioning pawl 10.

[0079] During the rotation of the bending arm 11, since the positioning claw 10 has already clamped the reinforcing bar 12, the bending arm 11 applies a bending force to the reinforcing bar 12, causing the reinforcing bar to gradually bend to the required angle. When the predetermined bending angle is reached, the hydraulic station stops supplying oil, the piston rod of the hydraulic cylinder 1 stops moving, and the bending operation is completed.

[0080] By controlling the extension length of the piston rod of the hydraulic cylinder 1 and the pressure of the hydraulic system, the rotation angle of the bending arm 11 can be precisely controlled, thereby achieving precise adjustment of the bending angle of the rebar 12. Due to the adoption of a hydraulic split structure and a high-efficiency gear transmission system, this handheld rebar bending machine has advantages such as light weight, high transmission efficiency, precise bending angle, and convenient operation, and can meet the needs of rebar bending operations in different construction scenarios.

[0081] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A portable handheld rebar bending machine, characterized in that, include: Hydraulic cylinder, bending machine body, connecting rod transmission assembly, and bending assembly; The hydraulic cylinder is fixedly installed at one end of the bending machine body; The bending assembly is fixedly installed at the other end of the bending machine body; The connecting rod transmission assembly is disposed within the bending machine body; The two ends of the linkage transmission assembly are respectively connected to the hydraulic cylinder and the bending assembly; The hydraulic cylinder can drive the bending component to work through the connecting rod transmission assembly; The bending assembly can hold the reinforcing bar and, driven by the hydraulic cylinder, bend the reinforcing bar to the required angle.

2. The portable handheld rebar bending machine according to claim 1, characterized in that, One end of the bending machine body is the working part, and the other end is the flange connection part; The middle part of the bending machine body is the connecting rod guide section; The bending assembly is disposed on the working part; The hydraulic cylinder is connected to the flange connection and is driven by the connecting rod transmission assembly. One end of the connecting rod transmission assembly is disposed in the working part and connected to the bending assembly; The other end of the connecting rod transmission assembly is located in the connecting rod guide and is connected to the hydraulic cylinder.

3. The portable handheld rebar bending machine according to claim 2, characterized in that, The linkage transmission assembly includes: a connecting rod, a connecting rod pin, a toothed connecting rod, and a guide shaft; One end of the guide shaft is connected to the fisheye connector of the hydraulic cylinder, and the other end is connected to one end of the connecting rod; The other end of the connecting rod is connected to one end of the toothed connecting rod by means of the connecting rod pin; The toothed connecting rod is rotatably mounted on the working part and is connected to the bending assembly in a transmission manner.

4. The portable handheld rebar bending machine according to claim 3, characterized in that, The side wall of the connecting rod guide is provided with an arc-shaped guide groove; The guide shaft cooperates with the arc guide groove, and under the drive of the hydraulic cylinder, one end of the connecting rod can move along the arc guide groove.

5. The portable handheld rebar bending machine according to claim 4, characterized in that, The bending assembly includes: an intermediate gear, a gear, a positioning claw, and a bending arm; The intermediate gear, the gear, the positioning claw, and the bending arm are all mounted on the working part; The intermediate gear meshes with the gear; The gear is connected to the bent arm via a key; The positioning claw is fixed to the working part.

6. The portable handheld rebar bending machine according to claim 5, characterized in that, The toothed end of the toothed connecting rod meshes with the intermediate gear for transmission, and can drive the gear to rotate through the intermediate gear; The gear can drive the curved arm to rotate via a key; The positioning claw can hold the reinforcing bar, and under the rotation of the bending arm, the reinforcing bar can be bent to the required angle.

7. The portable handheld rebar bending machine according to claim 3, characterized in that, The bending machine body is equipped with a handle; The handle is located on the side of the connecting rod guide and is fixedly connected to the connecting rod guide.

8. The portable handheld rebar bending machine according to claim 3, characterized in that, The hydraulic cylinder can be connected to the hydraulic station via hydraulic oil pipes; the hydraulic station is located on the working platform.

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