Simple upright steel bar pre-bending device

Abstract

The utility model discloses a simple vertical reinforcing steel bar pre-bending device which comprises a bending plate, a stress application rod which is arranged in an upward inclined mode is fixed on the bending plate, a fixed bending rod is vertically fixed on one side, close to the stress application rod, of the bending plate, and an adjustable bending rod is vertically arranged on one side, away from the stress application rod, of the bending plate. The fixed bending rod and the adjustable bending rod are both located on the center line of the bending plate, the bending plate is further provided with a plurality of preformed holes evenly distributed along the center line of the bending plate at intervals, the preformed holes are located between the fixed bending rod and the adjustable bending rod, and the adjustable bending rod can be fixed by selecting the corresponding preformed hole according to the bending length of the reinforcing steel bar. The problem that reinforcing steel bars cannot be machined under the power-free condition can be solved, the requirement for pre-bending of a horn opening in the top of a reinforcement cage is met, enough strength and stability are achieved, the reinforcing steel bars can be accurately and rapidly bent, the construction quality is ensured, the requirements for bending the reinforcing steel bars of different sizes and shapes can be met, and the ergonomic principle is met; and the operation comfort and efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending tools, and more specifically, the utility model is a simple vertical steel bar pre-bending device. Background Art

[0002] In the modern construction industry, steel bars are key structural materials, and their pre-bending is an important part of the construction process. Traditional steel bar pre-bending mainly relies on steel bar bending machines. However, while relying on power supply, steel bar bending machines also expose some problems. In particular, when there is a power outage at the construction site, steel bar pre-bending cannot be carried out, which directly affects the construction progress. In addition, the size of the straight steel bars entering the site is limited, and each steel cage needs to be extended. At present, the construction site generally adopts the method of single-sided lap welding to extend the steel bars. However, although this method is simple and easy, the top of the steel cage after welding is often not pre-bent at the bell mouth, which greatly affects the overall stability and bearing capacity of the steel cage. In response to these problems, a simple steel bar bending tool is urgently needed to meet the diverse needs of the construction site. In short, solving the problem that steel bars cannot be processed under powerless conditions at the construction site and realizing the bell mouth pre-bending at the top of the steel cage have become technical problems that need to be solved and the focus of research for technicians in this field. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model innovatively provides a simple upright steel bar pre-bending device, which is highly portable and convenient to use at the construction site at any time. It is not restricted by power supply and can realize the pre-bending of the bell mouth at the top of the steel cage. It can accurately and quickly complete the bending work of the steel bars, can adapt to the bending needs of steel bars of different sizes and shapes, and can improve the operating comfort and efficiency.

[0004] To achieve the above-mentioned technical objectives, the utility model discloses a simple upright steel bar pre-bending device, including a bending plate, on which a force rod arranged upwardly tilted is fixed, a fixed bending rod is vertically fixed on the side of the bending plate close to the force rod, and an adjustable bending rod is vertically provided on the side of the bending plate away from the force rod, the fixed bending rod and the adjustable bending rod are both located on the center line of the bending plate, and the bending plate is also provided with a plurality of reserved holes evenly spaced along its own center line, the reserved holes are located between the fixed bending rod and the adjustable bending rod, and the adjustable bending rod can be fixed by selecting an appropriate reserved hole according to the bending length of the steel bar.

[0005] Furthermore, the utility model provides a simple vertical steel bar pre-bending device, wherein a baffle is provided at the end of the adjustable bending rod, and the cross-sectional area of ​​the baffle is larger than the cross-sectional area of ​​the adjustable bending rod.

[0006] Furthermore, the utility model provides a simple vertical steel bar pre-bending device, wherein the angle between the axis of the force adding rod and the center line of the bending plate is 150°.

[0007] Furthermore, the utility model provides a simple vertical steel bar pre-bending device, wherein the length of the force rod is not less than 1200 mm.

[0008] Furthermore, the utility model provides a simple vertical steel bar pre-bending device, wherein the number of the force adding rods is two and the two force adding rods are arranged side by side.

[0009] Furthermore, the utility model provides a simple vertical steel bar pre-bending device, wherein the force rod and the fixed bending rod are connected to the bending plate by welding.

[0010] The beneficial effects of the utility model are as follows: it solves the problem that the steel bars cannot be processed under the condition of no electricity at the construction site, and realizes the requirement of pre-bending the bell mouth at the top of the steel cage. The force rod is tilted and arranged on one side of the bending plate, making it more ergonomic. During operation, the steel bar bending operation can be completed by only pressing the force rod downward, which can improve the comfort and efficiency of operation. The bending length of the steel bar is controlled by the distance between the fixed bending rod and the adjustable bending rod, and a number of reserved holes are arranged on the bending plate, which are arranged at equal intervals along the center line of the bending plate. When the steel bar needs to be bent, the adjustable bending rod can be fixed with a suitable reserved hole according to the required bending length, so as to meet the requirements of bending steel bars of different lengths. It is also highly portable, convenient to use at any time at the construction site, not limited by the power supply, with sufficient strength and stability, and can accurately and quickly complete the bending work of the steel bar to ensure the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a three-dimensional structural schematic diagram of a simple vertical steel bar pre-bending device.

[0012] Figure 2 It is a front view structural schematic diagram of a simple vertical steel bar pre-bending device of the utility model. DETAILED DESCRIPTION

[0013] A simple vertical steel bar pre-bending device of the utility model is explained and illustrated in detail below in conjunction with the drawings in the specification.

[0014] like Figure 1-2As shown, the utility model discloses a simple vertical steel bar pre-bending device, which is mainly composed of a bending plate 1, a force rod 2, a fixed bending rod 3 and an adjustable bending rod 4, which solves the problem that steel bars cannot be processed under no electricity conditions at the construction site, and realizes the pre-bending of the bell mouth at the top of the steel cage. It improves work efficiency, reduces labor costs, and ensures construction quality. Among them, a force rod 2 tilted upward is fixed on the bending plate 1. This tilting design conforms to the principle of ergonomics, making it easier for construction workers to press the force rod 2. A fixed bending rod 3 is vertically fixed on the side of the bending plate 1 close to the force rod 2, and an adjustable bending rod 4 is vertically provided on the side away from the force rod 2. Both bending rods are located on the center line of the bending plate 1, ensuring the accuracy and stability of the bending operation. In order to meet the needs of bending steel bars of different lengths, a number of reserved holes 11 evenly spaced along the center line of the bending plate 1 are provided. These reserved holes 11 are located between the fixed bending rod 3 and the adjustable bending rod 4, and the adjustable bending rod 4 can be fixed to any of the reserved holes 11 as needed. This design not only increases the flexibility of the device, but also ensures the accuracy and reliability of the bending operation.

[0015] In actual use, the construction workers only need to insert the upright steel bars on the steel cage between the fixed bending rod 3 and the adjustable bending rod 4, and then make the ends of the upright steel bars collide with the adjustable bending rod 4. Next, by pressing down the force rod 2, the upright steel bars will bend at the position of the fixed bending rod 3, and the pre-bending operation of the upright steel bars can be easily completed. The whole process is simple and easy, without the need for complex equipment or professional skills, which greatly reduces the construction difficulty and cost. In addition, the device has the advantages of simple structure and easy to carry, which is convenient for use at the construction site at any time. At the same time, since no electricity supply is required, it is not affected by the limitation of electricity supply. This portable bending device has significant advantages in improving construction efficiency, reducing labor costs and ensuring construction quality, and is worthy of wide promotion and application at construction sites.

[0016] In one embodiment of the utility model, a baffle 41 is provided at the end of the adjustable bending rod 4, and this arrangement solves the problem of the vertical steel bar slipping off during the fixing process. The cross-sectional area of ​​the baffle 41 is larger than the cross-sectional area of ​​the adjustable bending rod 4, so that a groove-shaped structure is formed between the baffle 41 and the bending plate 1. When the vertical steel bar is inserted into this structure, its position is firmly restricted between the baffle 41 and the bending plate 1. This arrangement can effectively prevent the vertical steel bar from slipping off when the force rod 2 is pressed down, thereby greatly improving the safety of construction.

[0017] As an important part of the adjustable bending rod 4, the angle between the axis of the force rod 2 and the center line of the bending plate 1 is 150°. This angle setting provides more operating space for the force rod 2 after the vertical steel bar is inserted into the fixed bending rod 3 and the adjustable bending rod 4. In this way, the construction personnel can be more flexible and free during the operation, which improves the work efficiency.

[0018] In order to save more effort, the length of the force rod 2 is not less than 1200mm. This setting allows construction workers to apply force more easily during operation and reduces labor intensity. At the same time, in order to enhance the firmness of the structure, the force rod 2 is set to two, arranged side by side. This double-rod design not only improves the stability of the structure, but also makes the entire construction process safer and more reliable.

[0019] In terms of connection, the force rod 2 and the fixed bending rod 3 are connected to the bending plate 1 by welding. This connection method has the advantages of firm connection, stable structure, and high tensile strength. The weld must be full, free of slag, pores, smooth surface, and the weld leg size meets the requirements and complies with the corresponding steel structure design specifications. Such strict welding requirements ensure the strength and stability of the connection parts and provide a strong guarantee for construction safety.

[0020] In terms of specific material selection, the force rod 2 is made of two HRB400 grade steel bars with a diameter of 16mm and welded together, and the fixed bending rod 3 is made of 16mm HRB400 grade steel bars. Both materials have high strength and toughness, and can meet various needs during the construction process. The adjustable bending rod 4 uses 12.9 grade high-strength large hexagon head half-thread bolts with a specification of M16*75. This bolt has excellent tensile properties and adjustment functions, making the adjustable bending rod 4 more flexible and convenient in practical applications.

[0021] In addition, the setting of the adjustable bending rod 4 also fully considers the detailed requirements during the construction process. For example, the distance between the fixed bending rod 3 and the adjustable bending rod 4 is 200mm, the reserved holes 11 are set to four, and the spacing between the four reserved holes 11 is 20mm. Such a design not only ensures the stability of the structure, but also provides sufficient operating space for construction personnel. At the same time, the distance between each reserved hole 11 and the fixed bending column is 120mm, 140mm, 160mm, and 180mm from near to far. Such a distance setting makes the bending length of the vertical steel bar optional.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and simple improvement made to the essential content of the present invention shall be included in the protection scope of the present invention.

Claims

1. A simple vertical steel bar pre-bending device, characterized in that: The invention comprises a bending plate (1), on which a force rod (2) arranged to be inclined upward is fixed, a fixed bending rod (3) is vertically fixed on the side of the bending plate (1) close to the force rod (2), and an adjustable bending rod (4) is vertically provided on the side of the bending plate (1) away from the force rod (2), the fixed bending rod (3) and the adjustable bending rod (4) are both located on the center line of the bending plate (1), and the bending plate (1) is also provided with a plurality of reserved holes (11) evenly spaced along its center line, the reserved holes (11) are located between the fixed bending rod (3) and the adjustable bending rod (4), and the adjustable bending rod (4) can be fixed by selecting an appropriate reserved hole (11) according to the bending length of the steel bar.

2. A simple vertical steel bar pre-bending device according to claim 1, characterized in that: A baffle (42) is provided at the end of the adjustable bending rod (4), and the cross-sectional area of ​​the baffle (42) is larger than the cross-sectional area of ​​the adjustable bending rod (4).

3. A simple vertical steel bar pre-bending device according to claim 2, characterized in that: The angle between the axis of the force-adding rod (2) and the center line of the bending plate (1) is 150°.

4. A simple vertical steel bar pre-bending device according to claim 3, characterized in that: The length of the force adding rod (2) is not less than 1200 mm.

5. A simple vertical steel bar pre-bending device according to claim 4, characterized in that: The number of the force adding rods (2) is two, and the two force adding rods (2) are arranged side by side.

6. A simple vertical steel bar pre-bending device according to claim 5, characterized in that: The force-applying rod (2) and the fixed bending rod (3) are both connected to the bending plate (1) by welding.

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