Portable reinforcing steel bar cutting device for construction

Abstract

The utility model relates to a portable reinforcing steel bar cutting device for construction and belongs to the technical field of cutting equipment. It comprises a handheld cutting machine, a protective cover detachably installed on the handheld cutting machine, and a cover plate detachably installed at the bottom of the protective cover. The protective cover comprises a first half shell and a second half shell. A first cutting groove is arranged on the first half shell, and a long guide rod and a short guide rod are arranged on the outer circumferential surface of the first half shell. A second cutting groove is arranged on the cover plate, directly below the first cutting groove. The cutting piece is completely wrapped by the protective cover, effectively avoiding the problem of staff injury caused by damage to the cutting piece during cutting, improving safety. Furthermore, the guide rod is arranged on the protective cover. During cutting, the guide rod is pressed on the reinforcing steel bar, effectively avoiding the problem of slippage of the cutting piece at the initial stage of cutting, effectively improving the safety and cutting efficiency of the cutting process.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and in particular to a portable rebar cutting device for construction. Background Technology

[0002] During construction, excess steel bars are often removed. For example, temporary support steel bars on both sides of the post-pouring strip (such as stirrups and formwork tie bars) need to be removed after pouring; temporary tie bars penetrating the structure (such as exposed parts of water-stop bolts) need to be removed when dismantling formwork or scaffolding; anchor steel bars of cantilever scaffolding I-beams and embedded steel bars of temporary support columns need to be removed down to the structural surface after dismantling; and excess exposed connecting steel bars (such as sleeve grouting reserved bars) need to be removed when installing precast wall panels and composite slabs.

[0003] When cutting these reinforcing bars, workers typically use handheld cutting machines. These machines are equipped with a semi-circular protective cover to prevent flying debris from injuring workers. At the beginning of cutting, because the surface of the reinforcing bar has not yet formed a cut, especially when cutting upright bars, the cutting blade is prone to slipping. When slipping, the blade may break due to uneven lateral force, and the high-speed flying fragments can easily injure the operator or surrounding personnel. The sudden rebound of the cutting machine due to slippage can also impact the operator's arm or body, causing cuts or fractures. Slippage also leads to skewed cut surfaces and increased burrs, affecting the quality of subsequent welding or mechanical connections of the reinforcing bars. Utility Model Content

[0004] To solve or partially solve the problems existing in related technologies, this utility model provides a portable rebar cutting device for construction, which aims to solve the technical problem that the cutting blade is prone to slipping when using a handheld cutting machine to cut rebar.

[0005] The aforementioned portable rebar cutting device for construction includes a handheld cutter, on which a protective cover is detachably installed, and a cover plate is detachably installed at the bottom of the protective cover;

[0006] The protective cover includes a first half-shell and a second half-shell;

[0007] The first half-shell is provided with a first semi-circular card, and the second half-shell is provided with a second semi-circular card. The first semi-circular card and the second semi-circular card clamp the protective cover mounting base of the handheld cutter from both sides and are fixedly connected by bolts.

[0008] The first half-shell is provided with a first cutting groove, and a long guide rod and a short guide rod are provided on the outer circumferential surface of the first half-shell. The long guide rod and the short guide rod are respectively located on both sides of the first cutting groove, and the side of the long guide rod and the side of the short guide rod are respectively flush with the groove wall of the first cutting groove.

[0009] The cover plate is provided with a second cutting groove located directly below the first cutting groove.

[0010] In some designs, the end face of the first half-shell is provided with a locking hole, and the end face of the second half-shell is provided with a locking rod that can be inserted into the locking hole.

[0011] In some designs, the first half-shell has a bayonet on its side wall, the second half-shell has a locking threaded hole on its bottom surface, and the cover plate has a snap-fit ​​part on its side edge that can be inserted into the bayonet. After the locking screw passes through the cover plate, it is threaded into the locking threaded hole.

[0012] In some designs, rubber pads are provided on the opposite sides of the long guide rod and the short guide rod.

[0013] In some embodiments, the second half-shell is provided with a guide rail perpendicular to the long guide rod, the bottom of the short guide rod is provided with a slot, and the side wall of the slot is provided with a sliding groove.

[0014] The slot clamps the second half of the housing, and the guide rail is embedded in the guide rail, so that the short guide rod can only move along the guide rail, thereby moving closer to or away from the long guide rod.

[0015] In some designs, a fixing screw is threaded onto the short guide rod, with the lower end of the fixing screw abutting against the guide rail.

[0016] The technical solution provided by this utility model can include the following beneficial effects:

[0017] This application completely encloses the cutting disc with a protective cover, effectively preventing worker injuries caused by disc damage during the cutting process and improving safety. Furthermore, by setting guide rods on the protective cover, the cutting disc can be pressed against the reinforcing steel during cutting, effectively preventing slippage of the cutting disc in the early stages of cutting and further improving the safety and efficiency of the cutting process.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 This is a schematic diagram of the cutting device shown in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the protective cover of the cutting device shown in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the cutting device cutting vertical steel bars according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the cutting device cutting horizontal steel bars according to an embodiment of the present invention;

[0024] Figure 5 This is an exploded schematic diagram of the protective cover of the cutting device shown in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram showing the cooperation between the protective cover and the cover plate of the cutting device in an embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the installation of the short guide rod of the cutting device shown in an embodiment of this utility model;

[0027] Figure label:

[0028] 1. Handheld cutting machine; 2. Protective cover; 21. First half-shell; 211. First semi-circular card; 212. Card hole; 213. Guide rail; 22. Second half-shell; 221. Second semi-circular card; 222. Long guide rod; 223. Short guide rod; 2231. Slide groove; 224. First cutting groove; 225. Card rod; 226. Bayonet; 3. Cover plate; 31. Second cutting groove; 32. Snap-fit ​​part; 4. Fixing screw. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described. Example

[0030] like Figure 1 As shown, this application provides a portable rebar cutting device for construction, including a handheld cutter 1, a protective cover 2 detachably installed on the handheld cutter 1, and a cover plate 3 detachably installed on the bottom of the protective cover 2.

[0031] Specifically, the protective cover 2 is disc-shaped and made of metal material, covering the top and sides of the cutting blade. It includes a first half-shell 21 and a second half-shell 22. The cover plate 3 seals the bottom of the protective cover 2. In this way, the cutting blade is wrapped between the protective cover 2 and the cover plate 3, which effectively prevents the flying fragments from the cutting blade or the sparks generated during the cutting of steel bars from injuring relevant personnel.

[0032] like Figure 2 As shown, a first semicircular card 211 is fixedly installed on the first half-shell 21, and through holes are respectively provided at both ends of the first semicircular card 211. A second semicircular card 221 is provided on the second half-shell 22, and through holes are also provided at both ends of the second semicircular card 221. The first semicircular card 211 and the second semicircular card 221 clamp the protective cover mounting base of the handheld cutter 1 from both sides. After the bolt passes through the end through holes of the first semicircular card 211 and the end through holes of the second semicircular card 221 in sequence, it is screwed into the nut thread, thereby fixing the first half-shell 21 and the second half-shell 22 on the protective cover mounting base of the handheld cutter 1, that is, fixing the protective cover 2 on the handheld cutter 1. At the same time, when the bolt is loosened, the protective cover 2 can rotate around the protective cover mounting base of the handheld cutter 1.

[0033] The first half-shell 21 is provided with a first cutting groove 224, which extends inward from the circumferential surface of the first half-shell 21 along the radial direction of the protective cover 2, and has an arc-shaped bottom. The outer circumferential surface of the first half-shell 21 is provided with a long guide rod 222 and a short guide rod 223. The long guide rod 222 and the short guide rod 223 are respectively located on both sides of the first cutting groove 224, and the side of the long guide rod 222 and the side of the short guide rod 223 are respectively flush with the groove wall of the first cutting groove 224. This allows the reinforcing bars resting on the long guide rod 222 or the short guide rod 223 to move smoothly along the long guide rod 222 or the short guide rod 223 to the side wall of the first cutting groove 224.

[0034] The cover plate 3 is provided with a second cutting groove 31 located directly below the first cutting groove 224, and the size and shape of the second cutting groove 31 are the same as those of the first cutting groove 224.

[0035] like Figure 3As shown, when using this device to cut reinforcing bars, hold the handheld cutting machine 1, start the handheld cutting machine 1, and the cutting blade rotates. Then, place the long guide rod 222 or the short guide rod 223 on the reinforcing bar (generally, the long guide rod 222 is placed on the reinforcing bar; in some cases, when it is inconvenient to place the long guide rod 222 on the reinforcing bar, the short guide rod 223 is used). Through the friction between the long guide rod 222 or the short guide rod 223 and the reinforcing bar, the cutting position of the cutting blade is fixed, effectively avoiding the technical problem of the cutting blade easily slipping laterally at the beginning of cutting, ensuring the smooth progress of the reinforcing bar cutting process and improving the efficiency of reinforcing bar cutting; push the handheld cutting machine 1 to make the cutting blade gradually approach the reinforcing bar and cut the reinforcing bar. During this process, the reinforcing bar gradually slides to the side wall of the cutting groove until the reinforcing bar is completely cut off.

[0036] Normally, the first cutting groove 224 is located at the front end, such as Figure 4 As shown, when cutting horizontal steel bars, the bolts can be loosened first, and then the protective cover 2 can be rotated to make the first cutting groove 224 rotate to the bottom. Then the bolts can be tightened to fix it. In this way, when cutting steel bars, the cutting blade can automatically fall to cut the steel bars. The operator only needs to hold the handheld cutting machine 1 and make the long guide rod 222 press the steel bars tightly. It is more convenient and labor-saving to use.

[0037] In some specific implementations, such as Figure 5 As shown, the end face of the first half-shell 21 is provided with a locking hole 212, and the end face of the second half-shell 22 is provided with a locking rod 225 that can be inserted into the locking hole 212. By inserting the locking rod 225 into the locking hole 212, the connection strength between the first half-shell 21 and the second shell is effectively improved, thereby making the structure of the protective cover 2 more robust.

[0038] In some specific implementations, such as Figure 6 As shown, the first half-shell 21 has a bayonet 226 on its side wall. Specifically, there are three bayonet 226, one near the rear and two near the ends. The bottom surface of the second half-shell 22 has a locking thread hole. The side edge of the cover plate 3 has a locking part 32 into which the bayonet 226 can be inserted. After the locking screw passes through the cover plate 3, it is threaded into the locking thread hole.

[0039] When installing the cover plate 3, push the snap-fit ​​part 32 on the cover plate 3 into the slot 226 to securely connect it to the first half-shell 21. Secure the cover plate 3 to the second half-shell 22 with the locking screw. Compared with fixing the cover plate 3 entirely with screws, the installation and removal of the cover plate 3 is more convenient.

[0040] In some specific embodiments, rubber pads are provided on the opposite sides of the long guide rod 222 and the short guide rod 223, which helps to increase the friction between the long guide rod 222 or the short guide rod 223 and the reinforcing bar, making it less likely for the cutting blade to slip.

[0041] In some specific implementations, such as Figure 7 As shown, the second half-shell 22 is provided with a guide rail 213 perpendicular to the long guide rod 222, and the bottom of the short guide rod 223 is provided with a slot, and the side wall of the slot is provided with a sliding groove 2231; wherein, the slot clamps the second half-shell 22, and the guide rail 213 is embedded in the guide rail 213, so that the short guide rod 223 can only move along the guide rail 213, thereby moving closer to or away from the long guide rod 222.

[0042] In use, the short guide rod 223 can be slid according to the size of the reinforcing bar to adjust the distance between the long guide rod 222 and the short guide rod 223. When cutting the reinforcing bar, the long guide rod 222 can be pressed on the upper side of the reinforcing bar, and the short guide rod 223 can be clamped on the lower side of the reinforcing bar. In this way, the reinforcing bar can be clamped more stably, effectively ensuring the smooth progress of the reinforcing bar cutting process.

[0043] In this embodiment, a fixing screw 4 is threaded onto the short guide rod 223, and the lower end of the fixing screw 4 abuts against the guide rail 213.

[0044] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1.A portable steel bar cutting device for construction, comprising a handheld cutting machine (1), characterized in that: a protective cover (2) is detachably installed on the handheld cutting machine (1), and a cover plate (3) is detachably installed on the bottom of the protective cover (2); the protective cover (2) comprises a first half shell (21) and a second half shell (22); the first half shell (21) is provided with a first semicircular card (211), and the second half shell (22) is provided with a second semicircular card (221); the first semicircular card (211) and the second semicircular card (221) clamp the protective cover mounting seat of the handheld cutting machine (1) from both sides and are fixedly connected through bolts; the first half shell (21) is provided with a first cutting groove (224), and the outer circumferential surface of the first half shell (21) is provided with a long guide rod (222) and a short guide rod (223); the long guide rod (222) and the short guide rod (223) are located on both sides of the first cutting groove (224) respectively, and the side surface of the long guide rod (222) and the side surface of the short guide rod (223) are flush with the groove wall of the first cutting groove (224) respectively; and the cover plate (3) is provided with a second cutting groove (31) located directly below the first cutting groove (224). 2.The portable steel bar cutting device for construction according to claim 1, characterized in that: the end surface of the first half shell (21) is provided with a clamping hole (212), and the end surface of the second half shell (22) is provided with a clamping rod (225) which can be inserted into the clamping hole (212). 3.The portable steel bar cutting device for construction according to claim 2, characterized in that: the side wall of the first half shell (21) is provided with a clamping hole (226), the bottom surface of the second half shell (22) is provided with a locking screw hole, and the side edge of the cover plate (3) is provided with a clamping part (32) which can be inserted into the clamping hole (226); and a locking screw () is screwed with the locking screw hole after passing through the cover plate (3). 4.The portable steel bar cutting device for construction according to claim 1, characterized in that: the opposite side surfaces of the long guide rod (222) and the short guide rod (223) are respectively provided with rubber pads. 5.The portable steel bar cutting device for construction according to claim 1, characterized in that: the second half shell (22) is provided with a guide rail (213) perpendicular to the long guide rod (222), the bottom of the short guide rod (223) is provided with a clamping groove, and the side wall of the clamping groove is provided with a sliding groove (2231); wherein the clamping groove clamps the second half shell (22), and the guide rail (213) is embedded in the guide rail (213), so that the short guide rod (223) can only move along the guide rail (213), thereby approaching or moving away from the long guide rod (222). 6.The portable steel bar cutting device for construction according to claim 5, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A fixing screw (4) is screwed on the short guide rod (223) and the lower end of the fixing screw (4) abuts against the guide rail (213).

Images