Portable steel bar cut-off machine

Abstract

The utility model relates to the technical field of steel bar cutting, in particular to a portable steel bar cutting machine which comprises a movable frame, a plurality of idler wheels are arranged at the bottom end of the movable frame, stand columns are arranged on the two sides of the middle of the upper end of the movable frame, and sliding grooves are formed in the opposite side faces of the stand columns. A spring, a lifting plate and rotating wheels are sequentially arranged in the sliding groove from bottom to top, the lifting plate is arranged at the upper end of the spring, the rotating wheels are arranged at the upper end of the lifting plate, a cut-off machine is connected between the two rotating wheels through a connecting column, a telescopic rod is arranged on one side of the cut-off machine, and a handle is installed at the top end of the telescopic rod. Operators do not need to frequently drag reinforcing steel bars, the labor intensity of the operators is reduced, meanwhile, the operators do not need to move the cut-off machine, the rollers at the bottom of the movable frame can be controlled to move only through the handle and the telescopic rod, and the flexibility of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of rebar cutting technology, specifically a portable rebar cutter. Background Technology

[0002] A rebar cutter is a tool used to cut rebar. It is an essential piece of equipment in rebar processing, mainly used for cutting rebar to a fixed length in building construction, bridges, tunnels, power stations, large-scale water conservancy projects, etc. For example, in reinforced concrete structures, before pouring concrete, rebar needs to be tied into a framework, thus requiring the rebar to be cut to the required length. Compared with other cutting equipment, portable rebar cutters are lightweight, consume less energy, are reliable in operation, and are highly efficient. Therefore, in recent years, they have been widely adopted by machining centers and small steel rolling mills, playing an important role in various fields of national economic construction.

[0003] Existing portable rebar cutters have limited functionality. When cutting rebar placed on the ground, operators need to drag the rebar to the cutting edge of the cutter before starting the machine to cut it. This does not reduce the operator's labor intensity. Furthermore, when cutting rebar to a specified length, operators still need to measure and mark the length of the rebar, which does not effectively improve work efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a portable rebar cutter. The device can be moved to the position where the rebar needs to be cut by means of a movable frame and rollers. The operator can press the cutter down by using the handle and telescopic rod. When the cutter moves towards the ground, the lifting plate descends towards the ground and the spring is compressed, which facilitates the cutter to cut the rebar on the ground. After cutting, the operator releases the downward pressure on the handle and telescopic rod. Under the elastic force of the spring, the rotating wheel at the upper end of the lifting plate moves upward, thereby moving the cutter away from the ground.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A portable rebar cutter includes a movable frame with multiple rollers at its bottom. Columns are located on both sides of the upper middle section of the movable frame, and grooves are formed on opposite sides of each column. A spring, a lifting plate, and a rotating wheel are arranged sequentially from bottom to top within each groove. A lifting plate is located above the spring, and a rotating wheel is located above the lifting plate. A cutter is connected to the two rotating wheels via a connecting column. A telescopic rod is located on one side of the cutter, and a handle is installed at the top of the telescopic rod.

[0007] Preferably, the cutting machine includes a main body, on which a mounting base is fitted, and the main body is connected to two connecting columns through the mounting base.

[0008] Preferably, a cutting shaft facing the bottom of the movable frame is provided at the center of the bottom end of the main body, the cutting shaft is provided with a cutting blade, and a clamping and lifting device is provided on one side of the bottom end of the main body.

[0009] Preferably, the clamping and lifting device includes a motor, which is installed on one side of the bottom of the main body. Threaded rods are provided at both ends of the motor, and movable plates are threadedly installed on the threaded rods. Wedge blocks are provided at the bottom ends of the two movable plates, and the sharp ends of the two wedge blocks are arranged in an alternating manner.

[0010] Preferably, the side of the cutting blade can abut against the side of the wedge block nearby, a limit cap is provided at the end of the threaded rod away from the motor, a limit plate is provided on the side of the lower end of the main body, and the bottom side of the limit plate can abut against the moving plate.

[0011] Preferably, the cutting shaft has a mounting groove, and both the side of the mounting groove and the side of the cutting blade have mounting holes. A mounting rod is provided in the mounting holes of the cutting blade and the mounting groove.

[0012] Preferably, a control panel is provided at the top of the telescopic rod on the side opposite to the handle, a laser indicator is provided at the bottom of the movable frame, the laser indicator is parallel to the side of the cutting blade near the wedge block, and the roller has a distance measuring function.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model has a simple structure. The operator rotates the cutting machine inside the column by using the handle and telescopic rod, making it easy for the operator to adjust the handle and telescopic rod to a suitable angle and height. When the device is moved above the rebar to the position where it needs to be cut, the operator can press the cutting machine downwards using the handle and telescopic rod. As the cutting machine moves towards the ground, the lifting plate descends towards the ground, and the spring is compressed, facilitating the cutting machine to cut the rebar on the ground. After cutting, the operator releases the downward pressure on the handle and telescopic rod. Under the elastic force of the spring, the rotating wheel at the top of the lifting plate moves upwards, thereby moving the cutting machine away from the ground. The entire process does not require the operator to frequently drag the rebar, reducing the operator's labor intensity. At the same time, the operator does not need to move the cutting machine; only the handle and telescopic rod are needed to control the movement of the rollers at the bottom of the moving frame, improving the flexibility of the device.

[0015] 2. The main body of the cutting machine of this device is detachably connected to the mounting base, which facilitates the separation of the main body from the mounting base for maintenance or repair, thereby improving the practicality of the device.

[0016] 3. When the bottom sides of the two wedge blocks of this device come into contact with the ground, the motor starts and drives the threaded rods at both ends to rotate. This drives the two moving plates that are threadedly connected to the threaded rods to move relative to each other. This makes it easier for the two wedge blocks to move relative to each other, lifting the steel bars on the ground so that the cutting blade can cut the steel bars.

[0017] 4. The limiting cap on this device helps prevent the moving plate from falling off. The limiting cap can be removed from the threaded rod, making it easy to remove the moving plate from the threaded rod for maintenance. The limiting plate set at the lower end of the main body can always abut against the top of the moving plate during the movement of the moving plate, so that the threaded rod can effectively drive the moving plate to move.

[0018] 5. This device aligns the laser emitted by the laser emitter with the end of the rebar. The operator pushes the moving frame to move it. Since the rollers have a distance measuring function, the distance information measured on the rollers can be displayed on the control panel, allowing the operator to see the distance the moving frame has moved in a timely manner. This allows the operator to determine the distance between the moving frame and the initial end of the rebar, and to know the position of the cutting blade on the rebar. After reaching the appropriate length, the device stops moving and the main body is pressed vertically downwards to cut the rebar. There is no need to measure the length of the rebar or mark it separately, which improves the efficiency of rebar cutting and reduces the labor intensity of the operator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0022] Figure 4 This is a structural diagram of the column;

[0023] Figure 5 for Figure 1 A partial structural diagram.

[0024] In the diagram: 1. Movable frame; 2. Roller; 3. Column; 4. Spring; 5. Lifting plate; 6. Rotating wheel; 7. Connecting column; 8. Main body; 9. Mounting base; 10. Cutting shaft; 11. Cutting knife; 12. Mounting rod; 13. Motor; 14. Threaded rod; 15. Limit cap; 16. Movable plate; 17. Wedge block; 18. Limiting plate; 19. Control panel; 20. Handle; 21. Telescopic rod; 22. Laser indicator. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] A portable rebar cutter, with the following structure: Figures 1-5 As shown, the device includes a movable frame 1, with multiple rollers 2 at the bottom. Columns 3 are located on both sides of the upper middle portion of the movable frame 1. Slide grooves are formed on opposite sides of each column 3. Springs 4, lifting plates 5, and rotating wheels 6 are arranged sequentially from bottom to top within the slide grooves. The lifting plate 5 is located at the upper end of the spring 4, and the rotating wheel 6 is located at the upper end of the lifting plate 5. A cutting machine is connected between two rotating wheels 6 via a connecting column 7. A telescopic rod 21 is located on one side of the cutting machine, and a handle 20 is installed at the top of the telescopic rod 21.

[0028] When it is necessary to cut the reinforcing bars, the reinforcing bars are laid out on the ground, and then the operator adjusts the handle 20 of the device to an appropriate height through the telescopic rod 21. Since the cutting machine is connected to the rotating wheel 6 in the column 3 through the connecting column 7, and a sliding groove is opened in the column 3, the operator drives the cutting machine to rotate in the column 3 through the handle 20 and the telescopic rod 21, which makes it easy for the operator to adjust the handle 20 and the telescopic rod 21 to a suitable angle and height to move the device. Since the rotating wheel 6 is set on the lifting plate 5, and the bottom of the lifting plate 5 is equipped with a spring 4, the elastic force of the spring 4 can cancel out the weight of the cutting machine and the telescopic rod 21, which makes it easy for the cutting machine to maintain a certain distance from the ground, so that the cutting machine will not be damaged when the operator moves the device.

[0029] When the device is moved above the rebar to the position where it needs to be cut, the operator can press the cutter downwards using the handle 20 and the telescopic rod 21. As the cutter moves towards the ground, the lifting plate 5 descends, compressing the spring 4, which facilitates the cutter cutting the rebar on the ground. After cutting, the operator releases the downward pressure on the handle 20 and the telescopic rod 21. Under the elastic force of the spring 4, the rotating wheel 6 at the upper end of the lifting plate 5 moves upwards, thereby moving the cutter away from the ground. The entire process does not require the operator to frequently drag the rebar, reducing the operator's labor intensity. At the same time, the operator does not need to move the cutter; only the handle 20 and the telescopic rod 21 are needed to control the movement of the roller 2 at the bottom of the moving frame 1, improving the flexibility of the device.

[0030] The cutting machine includes a main body 8, on which a mounting base 9 is fitted. The main body 8 is connected to two connecting columns 7 through the mounting base 9.

[0031] The two opposite sides of the mounting base 9 are connected to the two connecting columns 7, while the telescopic rod 21 is set on the side of the mounting base 9. The main body 8 of the cutting machine is detachably connected to the mounting base 9, which facilitates the separation of the main body 8 from the mounting base 9 for maintenance or repair, thereby improving the practicality of the device.

[0032] A cutting shaft 10 is provided at the center of the bottom end of the main body 8, facing the bottom of the movable frame 1. The cutting shaft 10 is provided with a cutting blade 11. A clamping and lifting device is provided on one side of the bottom end of the main body 8.

[0033] When cutting steel bars on the ground, the clamping and lifting device at the bottom of the main body 8 can abut against the ground as the bottom of the main body 8 moves towards the ground, ensuring that the steel bars on the ground are inside the clamping and lifting device. By starting the clamping and lifting device, the steel bars on the ground can be lifted. After starting the main body 8 of the cutting machine, the cutting shaft 10 inside the main body 8 can move towards the ground until the cutting blade 11 on the cutting shaft 10 abuts against the steel bar. Since the clamping and lifting device lifts the steel bar from the bottom, and the cutting blade 11 moves from the top of the steel bar towards the ground, the side of the cutting blade 11 and the side of the clamping and lifting device can abut against each other. As the cutting blade 11 continues to move downward, the steel bar can be cut.

[0034] The clamping and lifting device includes a motor 13, which is installed on one side of the bottom of the main body 8. Threaded rods 14 are provided at both ends of the motor 13. Moving plates 16 are installed on the threaded rods 14 by threads. Wedge blocks 17 are provided at the bottom ends of the two moving plates 16. The sharp ends of the two wedge blocks 17 are arranged in an alternating manner.

[0035] When the reinforcing bars are not cut, the wedge-shaped blocks 17 at the bottom of the two moving plates 16 are far apart from each other, so that when the main body 8 moves to the ground, the reinforcing bars are kept between the two wedge-shaped blocks 17. When the bottom sides of the two wedge-shaped blocks 17 are in contact with the ground, the motor 13 starts and drives the threaded rods 14 at both ends to rotate. This drives the two moving plates 16 that are threaded to the threaded rods 14 to move relative to each other, so that when the two wedge-shaped blocks 17 move relative to each other, the reinforcing bars on the ground are lifted, making it easier for the cutting blade 11 to cut the reinforcing bars.

[0036] After cutting, the motor 13 rotates in the opposite direction, which can drive the threaded rod 14 to rotate in the opposite direction, and drive the two moving plates 16 on the threaded rod 14 to move towards each other, so that the subsequent reinforcing bars can be placed between the two wedge blocks 17.

[0037] The side of the cutting blade 11 can abut against the side of the wedge block 17 nearby. The end of the threaded rod 14 away from the motor 13 is provided with a limit cap 15. The side of the lower end of the main body 8 is provided with a limit plate 18. The bottom side of the limit plate 18 can abut against the moving plate 16.

[0038] To prevent the movable plate 16 on the threaded rod 14 from falling off the threaded rod 14 under the drive of the motor 13, a limiting cap 15 is provided to prevent the movable plate 16 from falling off. The limiting cap 15 can be removed from the threaded rod 14, making it easy to remove the movable plate 16 from the threaded rod 14 for maintenance. The limiting plate 18 provided at the lower end of the main body 8 can always abut against the top of the movable plate 16 during the movement of the movable plate 16, so that the threaded rod 14 can effectively drive the movable plate 16 to move.

[0039] The cutting shaft 10 has a mounting groove, and both the side of the mounting groove and the side of the cutting blade 11 have mounting holes. A mounting rod 12 is provided in the cutting blade 11 and the mounting hole of the mounting groove.

[0040] The mounting groove of the cutting shaft 10 is compatible with the cutting blade 11. Both the cutting blade 11 and the mounting groove are provided with mounting holes, so that when the cutting blade 11 is placed in the mounting groove, the cutting blade 11 can be fixed by the mounting rod 12. Through the cooperation of the mounting holes and the mounting rod 12, the cutting blade 11 can be freely assembled and disassembled from the cutting shaft 10, which facilitates the replacement of the cutting blade 11.

[0041] Example 2

[0042] Based on Embodiment 1, a control panel 19 is provided on the top of the telescopic rod 21 opposite to the handle 20, a laser indicator 22 is provided at the bottom of the moving frame 1, the laser indicator 22 is parallel to the side of the cutting blade 11 near the wedge block 17, and the roller 2 has a distance measuring function.

[0043] The laser emitted by the laser pointer 22 can be directed toward the ground, and the operator can see the laser on the ground. Since the laser is parallel to the cut of the cutting blade 11 and the roller 2 has a distance measuring function, the distance can be measured by using the roller 2 when the moving frame 1 is moved.

[0044] When it is necessary to cut the rebar to a specified length, the operator moves the moving frame 1 by aligning the laser emitted by the laser emitter with the end of the rebar. Since the roller 2 has a distance measuring function (the distance measuring wheel is existing technology and will not be described in detail here), the distance information measured on the roller 2 can be displayed on the control panel 19, so that the operator can see the distance moved by the moving frame 1 in time, thereby judging the distance between the moving frame 1 and the initial end of the rebar after the movement, and knowing that the cutting blade 11 is now at the position of the rebar. After reaching the appropriate length, the movement of the device is stopped, and the main body 8 is pressed vertically downward to realize the cutting work of the cutting blade 11 on the rebar. There is no need to measure the length of the rebar or mark it separately, which improves the efficiency of rebar cutting and reduces the labor intensity of the operator.

[0045] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations, additions, subtractions, or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A portable rebar cutter, comprising a movable frame (1), wherein the bottom end of the movable frame (1) is provided with a plurality of rollers (2), characterized in that, The upper middle part of the mobile frame (1) is provided with columns (3) on both sides. The opposite sides of the columns (3) are provided with sliding grooves. The sliding grooves are arranged from bottom to top with springs (4), lifting plates (5) and rotating wheels (6). The upper end of the spring (4) is provided with lifting plates (5). The upper end of the lifting plates (5) is provided with rotating wheels (6). The two rotating wheels (6) are connected to a cutting machine through a connecting column (7). A telescopic rod (21) is provided on one side of the cutting machine. A handle (20) is installed at the top of the telescopic rod (21).

2. The portable rebar cutter according to claim 1, characterized in that, The cutting machine includes a main body (8), on which a mounting base (9) is fitted. The main body (8) is connected to two connecting columns (7) through the mounting base (9).

3. A portable rebar cutter according to claim 2, characterized in that, A cutting shaft (10) is provided at the center of the bottom end of the main body (8) and faces the bottom of the moving frame (1). The cutting shaft (10) is provided with a cutting blade (11). A clamping and lifting device is provided on one side of the bottom end of the main body (8).

4. A portable rebar cutter according to claim 3, characterized in that, The clamping and lifting device includes a motor (13), which is installed on one side of the bottom of the main body (8). The motor (13) has threaded rods (14) at both ends. Moving plates (16) are installed on the threaded rods (14) by threads. The bottom ends of the two moving plates (16) are provided with wedge blocks (17), and the sharp sections of the two wedge blocks (17) are arranged in an alternating manner.

5. A portable rebar cutter according to claim 4, characterized in that, The side of the cutting blade (11) can abut against the side of the wedge block (17) near it. The end of the threaded rod (14) away from the motor (13) is provided with a limit cap (15). The side of the lower end of the main body (8) is provided with a limit plate (18). The bottom side of the limit plate (18) can abut against the moving plate (16).

6. A portable rebar cutter according to claim 3, characterized in that, The cutting shaft (10) has a mounting groove, and the side of the mounting groove and the side of the cutting blade (11) have mounting holes. The cutting blade (11) and the mounting holes of the mounting groove are provided with mounting rods (12).

7. A portable rebar cutter according to claim 4, characterized in that, The top of the telescopic rod (21) is provided with a control panel (19) on the side opposite to the handle (20), and the bottom of the moving frame (1) is provided with a laser pointer (22). The laser pointer (22) is parallel to the side of the cutting blade (11) near the wedge block (17). The roller (2) has a distance measuring function.

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