Blade-replaceable cutter for cutting multiple layers of reinforcing steel bars in concrete gaps

Abstract

The utility model discloses a blade-replaceable cutter for cutting multiple layers of steel bars in concrete gaps, which comprises a cutter, the cutter comprises a cutter body, a blade and a detachable fixing structure, one side of the cutter body is provided with a dovetail groove, one side of the blade is provided with a dovetail part corresponding to the dovetail groove, and the dovetail part is provided with a plurality of through holes corresponding to the dovetail groove. The other side of the cutting edge is provided with a protrusion serving as a cutting part, the fixing structure is used for fixing the cutting edge to the cutter body, and the fixing structure is detachable.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete steel bar cutting, in particular to a replaceable blade tool for cutting multiple layers of steel bars in concrete gaps. Background Art

[0002] Concrete sleepers are made of concrete and high-strength threaded steel bars. Currently, the main technology for cutting steel bars in concrete gaps on the market is toothless saw cutting. Toothless saw cutting uses a large diameter round iron sheet to rub the steel bars to grind them off, but the disadvantage is that it makes a lot of noise.

[0003] To solve the noise problem, some concrete sleeper steel bar cutting machines use a lower cutter, at least two middle cutters, an upper cutter and other multi-layer cutters stacked up and down according to the number of layers of transverse connecting steel bars, so as to complete the cutting of multiple connecting steel bars between two sleepers at one time. However, this method brings new problems. If one of the cutters is difficult to handle after being worn or damaged, it can only be replaced with a new cutter. However, the overall structure of the cutter is too large, and the difficulty and cost of manufacturing homogeneous cutters are relatively high. Therefore, a replaceable blade tool that solves the above problems and is used to cut multiple layers of steel bars in concrete gaps is needed. Utility Model Content

[0004] The main purpose of the present application is to provide a replaceable blade tool for cutting multiple layers of steel bars in concrete gaps, aiming to solve the problems mentioned in the background technology.

[0005] The present application provides a replaceable blade tool for cutting multiple layers of steel bars in concrete gaps, characterized in that it comprises a cutting knife, the cutting knife comprising a knife body, a blade and a detachable fixing structure, one side of the knife body is provided with a dovetail groove, one side of the blade is provided with a dovetail portion corresponding to the dovetail groove, the other side of the blade is provided with a protrusion as a cutting portion, the fixing structure is used to fix the blade on the knife body, and the fixing structure is detachable.

[0006] Furthermore, the cutter includes at least two blades, and the cutter also includes a spacer blade, a spacer blade is installed between any two blades, one side of the spacer blade is provided with a dovetail portion corresponding to the dovetail groove, and the other side of the spacer blade is a planar structure.

[0007] Furthermore, any of the cutting knives comprises two cutting edges and at least one spacer edge.

[0008] Furthermore, the replaceable blade tool includes an upper cutter, a first middle cutter, a second middle cutter, and a lower cutter. The upper surface of the lower cutter, the lower surface of the upper cutter, and the upper and lower surfaces of the first middle cutter and the second middle cutter are all provided with the dovetail groove for installing the blade.

[0009] Furthermore, a rectangular groove is also provided on one side of the blade body having the dovetail groove, the rectangular groove and the dovetail groove share a common symmetry line, and the cross-section of the rectangular groove is larger than the cross-section of the dovetail groove; when the blade is installed, the blade first passes through the rectangular groove and then enters the dovetail groove; when the blade is removed, the blade retreats from the dovetail groove to the rectangular groove.

[0010] Furthermore, the fixing structure includes a filling key and a rivet, the filling key is used to limit the movement of the blade in the depth direction of the dovetail groove, the rivet is used to fix the filling key, and the filling key is provided with a top screw hole and a rivet hole, the rivet hole is used for allowing the needle-shaped part of the rivet to pass through, and the top screw hole is used to screw in a screw to remove the filling key when removing the blade.

[0011] Furthermore, a spacer blade is provided between the blade and the outside, and the fixing structure includes a locking screw and a screw hole provided on the blade body, and the locking screw is used to limit the movement of the blade and the spacer blade in the direction of the groove length of the dovetail groove.

[0012] The cutting knife provided in the utility model comprises a knife body, a blade and a detachable fixing structure. A dovetail groove is provided on one side of the knife body, and a dovetail portion corresponding to the dovetail groove is provided on one side of the blade, so that the blade can be slidably installed along the dovetail groove. The fixing structure fixes the blade on the knife body, and the blade can be replaced by disassembling the fixing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a structural front view of a replaceable blade tool for cutting multiple layers of steel bars in a concrete gap according to an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 A top view of the structure of an embodiment.

[0017] Figure 3 yes Figure 1 Section view about cutting line AA.

[0018] Figure 4 yes Figure 1 Section view about cutting line BB.

[0019] Figure 5 It is a structural front view of another embodiment of the utility model provided by the utility model, in which a replaceable blade tool is used for cutting multiple layers of steel bars in a concrete gap.

[0020] Figure 6 yes Figure 5 A top view of the structure of an embodiment.

[0021] Figure 7 yes Figure 6 Section view about cutting line CC.

[0022] Figure 8 yes Figure 6 Section view about cutting line DD.

[0023] Fig. 9 yes Figure 6 Section view about cutting line EE.

[0024] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0026] Concrete sleepers are made of concrete and high-strength threaded steel bars. Currently, the main technology for cutting steel bars in concrete gaps on the market is toothless saw cutting. Toothless saw cutting uses a large diameter round iron sheet to rub the steel bars to grind them off, but the disadvantage is that it makes a lot of noise.

[0027] To solve the noise problem, some concrete sleeper steel bar cutting machines use a lower cutter, at least two middle cutters, an upper cutter and other multi-layer cutters stacked up and down according to the number of layers of transverse connecting steel bars, so as to complete the cutting of multiple connecting steel bars between two sleepers at one time. However, this method brings new problems. If one of the cutters is difficult to handle after being worn or damaged, it can only be replaced with a new cutter. However, the overall structure of the cutter is too large, and the difficulty and cost of manufacturing homogeneous cutters are relatively high. Therefore, a replaceable blade tool that solves the above problems and is used to cut multiple layers of steel bars in concrete gaps is needed.

[0028] Please refer to 1-9. The present application provides a replaceable blade tool for cutting multiple layers of steel bars in concrete gaps, characterized in that it includes a cutting knife, the cutting knife includes a knife body (111, 131), a blade (112, 132) and a detachable fixing structure, one side of the knife body (111, 131) is provided with a dovetail groove (114, 134), one side of the blade (112, 132) is provided with a dovetail portion corresponding to the dovetail groove (114, 134), the other side of the blade (112, 132) is provided with a protrusion as a cutting portion, the fixing structure is used to fix the blade (112, 132) on the knife body (111, 131), and the fixing structure is detachable.

[0029] The utility model provides a cutting knife comprising a knife body (111, 131), a blade (112, 132) and a detachable fixing structure. A dovetail groove (114, 134) is provided on one side of the knife body (111, 131), and a dovetail portion corresponding to the dovetail groove (114, 134) is provided on one side of the knife blade (112, 132), so that the knife blade (112, 132) can be installed by sliding along the dovetail groove (114, 134). The fixing structure fixes the knife blade (112, 132) on the knife body (111, 131), and the knife blade (112, 132) can be replaced by disassembling the fixing structure.

[0030] In one embodiment of the utility model, the replaceable blade tool comprises an upper cutter 11, a first middle cutter 13, a second middle cutter 14, and a lower cutter 12. The upper surface of the lower cutter 12, the lower surface of the upper cutter 11, the upper and lower surfaces of the first middle cutter 13 and the second middle cutter 14 are all provided with the dovetail groove (114, 134) for mounting the blade (112, 132). Figure 1-4 The schematic diagram of the embodiment of the upper cutter 11 or the lower cutter 12 is shown. Figure 5-9 Shown is a schematic diagram of an embodiment of the first middle cutter 13 or the second middle cutter 14.

[0031] In this embodiment, according to the number of layers of transverse connecting steel bars, a lower cutter 12, at least two middle cutters, an upper cutter 11 and other multi-layer cutters are stacked up and down to complete the cutting of multiple connecting steel bars between two sleepers at one time. The lower cutter 12, the upper cutter 11 and the middle cutter used are all rectangular plate-shaped cutters, and the upper surface of the lower cutter 12, the lower surface of the upper cutter 11, and the upper surface and lower surface of the middle cutter are respectively provided with blades (112, 132) with a single triangular cross-section shape.

[0032] In one embodiment of the utility model, the cutter comprises at least two blades (112, 132), and the cutter further comprises a spacer blade (113, 133), a spacer blade (113, 133) is installed between any two blades (112, 132), a dovetail portion corresponding to the dovetail groove (114, 134) is provided on one side of the spacer blade (113, 133), and the other side of the spacer blade (113, 133) is a planar structure.

[0033] Preferably, any of the cutting knives comprises two of the cutting edges (112, 132) and at least one of the spacer edges (113, 133).

[0034] In one embodiment of the utility model, taking the upper cutter 11 or the lower cutter 12 as an example, the blade body (111, 131) is provided with a dovetail groove (114, 134) on one side thereof and is also provided with a rectangular groove 115, the rectangular groove 115 and the dovetail groove (114, 134) are on a common symmetry line, and the cross section of the rectangular groove 115 is larger than the cross section of the dovetail groove (114, 134); when the blade (112, 132) is installed, the blade (112, 132) first passes through the rectangular groove 115 and then enters the dovetail groove (114, 134); when the blade (112, 132) is removed, the blade (112, 132) retreats from the dovetail groove (114, 134) to the rectangular groove 115.

[0035] In one embodiment of the utility model, taking the first middle cutter 13 or the second middle cutter 14 as an example, the fixing structure includes a filling key 135 and a rivet 136, the filling key 135 is used to limit the movement of the blade (112, 132) in the groove depth direction of the dovetail groove (114, 134), the rivet 136 is used to fix the filling key 135, and the filling key 135 is provided with a top screw hole 1351 and a rivet hole 1352, the rivet hole 1352 is used for the needle-shaped part of the rivet 136 to pass through, and the top screw hole 1351 is used to screw in a screw to remove the filling key 135 when removing the blade (112, 132). In this embodiment, when replacing the blade (112, 132), the mushroom head of the rivet 136 must be ground off first, and a screw is screwed into the top screw hole 1351. The filling key 135 can be removed, and the blade (112, 132) to be replaced can be withdrawn along the dovetail groove (114, 134), and the blade (112, 132) or the spacer blade (113, 133) can be removed from the rectangular groove 115.

[0036] In one embodiment of the utility model, a spacer blade (113, 133) is provided between the blade (112, 132) and the outside, and the fixing structure includes a locking screw 116 and a screw hole provided on the blade body (111, 131), and the locking screw 116 is used to limit the movement of the blade (112, 132) and the spacer blade (113, 133) in the groove length direction of the dovetail groove (114, 134). In this embodiment, when changing the blade, only the locking screw 116 is removed, and the blade (112, 132) or the spacer blade (113, 133) is withdrawn along the dovetail groove (114, 134).

[0037] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A replaceable blade tool for cutting multiple layers of steel bars in concrete gaps, characterized in that: The invention comprises a cutting knife, which comprises a knife body, a blade and a detachable fixing structure. A dovetail groove is provided on one side of the knife body, a dovetail portion corresponding to the dovetail groove is provided on one side of the blade, a protrusion is provided on the other side of the blade as a cutting portion, and the fixing structure is used to fix the blade on the knife body, and the fixing structure is detachable.

2. The replaceable blade tool according to claim 1, characterized in that: The cutter includes at least two blades, and the cutter also includes a spacer blade. A spacer blade is installed between any two blades. One side of the spacer blade is provided with a dovetail portion corresponding to the dovetail groove, and the other side of the spacer blade is a planar structure.

3. The replaceable blade tool according to claim 2, characterized in that: Any of the cutting knives comprises two cutting edges and at least one spacer edge.

4. The replaceable blade tool according to claim 1, characterized in that: The replaceable blade tool includes an upper cutter, a first middle cutter, a second middle cutter, and a lower cutter. The upper surface of the lower cutter, the lower surface of the upper cutter, the upper and lower surfaces of the first middle cutter and the second middle cutter are all provided with the dovetail groove for installing the blade.

5. The replaceable blade tool according to claim 1, characterized in that: The blade body is provided with a rectangular groove on one side of the dovetail groove, the rectangular groove and the dovetail groove share a common symmetry line, and the cross-section of the rectangular groove is larger than the cross-section of the dovetail groove; when the blade is installed, the blade first passes through the rectangular groove and then enters the dovetail groove; when the blade is removed, the blade retreats from the dovetail groove to the rectangular groove.

6. The replaceable blade tool according to claim 1, characterized in that: The fixing structure includes a filling key and a rivet. The filling key is used to limit the movement of the blade in the depth direction of the dovetail groove. The rivet is used to fix the filling key. The filling key is provided with a top screw hole and a rivet hole. The rivet hole is used for the needle-shaped part of the rivet to pass through. The top screw hole is used to screw in a screw to remove the filling key when removing the blade.

7. The replaceable blade tool according to claim 2, characterized in that: A spacer blade is provided between the blade and the outside, and the fixing structure includes a locking screw and a screw hole provided on the blade body, and the locking screw is used to limit the movement of the blade and the spacer blade in the groove length direction of the dovetail groove.

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