JPH055328U - Steel plate cutting machine - Google Patents

Abstract

(57) [Summary] [Purpose] A conventional cutting machine mounted on a construction machine for scrapping steel plates such as ships, buses, freight cars, and steel plates attempts to cut the steel plate in the same manner as cutting paper with scissors. Also,
Since the width of the anvil is larger than the distance between the cut surfaces, it was not possible to continuously cut the steel plate. Therefore, it takes a lot of time, labor and time, and the work efficiency of cutting the steel sheet is very poor. The present invention aims to solve the above problems. [Structure] The rocker beam is connected to the left and right side plates with the front plate to form a U-shape in plan view, and when the rocker beam is closed and rotated, the anvil can be passed through the inner space of the rocker beam. In addition, the cutting blade attached to the rocker beam is divided into an outer peripheral blade and an inner peripheral blade,
Further, the cutting edge of the outer peripheral blade is configured to project in the cutting direction from the blade edge of the inner peripheral blade.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is mounted on the tip of a work attachment of a construction machine such as a hydraulic excavator. Steel plate cutting machine used for processing steel plate scraps of ships, ships, buses, freight cars, steel plates, etc. Concerned.

[0002]

[Prior art]

  FIG. 7 is a side view showing a cutting machine 1 according to an embodiment of the prior art. In the figure, 2 is To attach the cutting machine 1 to the tip of a construction machine work attachment (not shown) Brackets, 3 are frame bodies, 4 are rocker beams, 5 are anvils, 6 and 7 are Cutting blades fastened to the rocker beam 4 and anvil 5 respectively, 8 is cutting oil It is a pressure cylinder. 8 is a sectional view taken along line AA of FIG. 9 and 9'in the figure These are bolts that fasten and fix the cutting blades 6 and 7, respectively.

[0003]   Next, a conventional cutting machine 1 will be described with reference to FIGS. 7 and 8. In the cutting machine 1, The base of the beam 4 is pivotally supported on the frame body 3 by the pin 10 (shown in FIG. 1), The rocker beam 4 can be rotated by the hydraulic cylinder 8 with the pin 10 as the axis. , The anvil 5 corresponding to the rocker beam 4 is fixed to the frame body 3, Cutting blades 6 and 7 are attached to the rocker beam 4 and the anvil 5, respectively, and both cutting blades are attached. It is possible to open and close 6 and 7.

[0004]

[Problems to be solved by the device]

  In the conventional cutting machine, as shown in FIG. 8, that of the rocker beam 4 and the anvil 5 is The vertical thicknesses are t and t '. And the cross section of the cutting edges 6 and 7 is It is a position near the center of the heights t and t '. When cutting steel plates with this cutting machine Even if you try to cut the paper with scissors, the width of the anvil is the cut surface. Since it is larger than the interval, it is impossible to continuously cut the steel plate. FIG. 9 shows the conventional It is a principal part perspective view of the steel plate which shows the order which cuts a steel plate with the cutting machine of a technique. First 1 As part of the second cut, cut part a. Then twice to put in the width of the anvil Cut off the part of B as an eye. Then, fold the middle plate part c between the cutting surfaces a and b. It was bent and the anvil was inserted between them, and the above operation was repeated. Therefore, the work of continuously cutting the steel sheet requires a great deal of labor, labor and time, The work efficiency was very poor. The present invention provides a steel plate cutting machine that can solve the above problems. The purpose is to provide.

[0005]

[Means for Solving the Problems]

  In the present invention, the rocker beam is a left and right side plate, and the front end of each side plate is a front plate. When the rocker beam was connected and formed so that it had a U shape in plan view, and the rocker beam was closed and rotated. To allow the anvil to pass through the inner space of the rocker beam of Kishino In addition, attach cutting blades along the biting surfaces of the left and right side plates and front plate of the rocker beam above. Configured. The cutting blade is divided into an outer peripheral blade on the outer peripheral side and an inner peripheral blade on the inner peripheral side. Formed. In addition, the blade edge of the outer peripheral blade is made to project in the cutting direction from the blade edge of the inner peripheral blade. When cutting the steel plate by closing the rocker beam, the steel plate is first cut by the outer peripheral blade. Then, cut the part of the steel plate protruding from the anvil with the inner peripheral blade. I'm sorry.

[0006]

【Example】

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 shows the steel plate of the present invention. It is a side view at the time of opening of the cutting machine 11 (henceforth the cutting machine 11). In the figure, 1 2 is a bracket, 13 is a frame body, 14 is a rocker beam, 15 is an anvil, Reference numeral 16 is a hydraulic cylinder, 17, 18 and 19 are pins, and 20 is a rocker beam 1. 4 is a cutting blade attached to the biting surface side, and 21 is a steel plate to be cut. 2 is B of FIG. It is a figure which shows the rocker beam 14 which looked at. In the figure, 22 and 23 are Lockerbie The left and right side plates of the frame 14, 24 are front plates, and 25 is an inner space portion of the rocker beam 14. . FIG. 3 is a cross-sectional view of the main part viewed from CC of FIG. In the figure, 26 is the cutting edge 2 0 outer peripheral blade, 27 inner peripheral blade, 28 tightens outer peripheral blade 26 and inner peripheral blade 27 It is a fixed bolt. FIG. 4 is a side view of the cutting machine 11 of the present invention when the cutting machine 11 is closed. . FIG. 5: is a figure which shows the cutting process of the steel plate by the cutting machine 11. As shown in FIG.

[0007]   Next, the structure of the cutting machine 11 of the present invention will be described with reference to FIGS. With cutting machine 11 Attaches the rocker beam 14 to the left and right side plates 22 and 23 and the side plates 22 and 23 respectively. The front end of the rocker is connected by the front plate 24 to form a U-shape in plan view. When the aperture 14 of the rocker beam 14 is rotated, the inner space 25 of the rocker beam 14 is unwound. The building 15 can be passed through, and the left and right sides of the rocker beam 14 can be passed. The cutting blade 20 is attached along the front side of the side plates 22 and 23 and the front plate 24. Then, the cutting blade 20 is divided into an outer peripheral blade 26 on the outer peripheral side and an inner peripheral blade 27 on the inner peripheral side. Formed. In addition, the blade tip of the outer peripheral blade 26 projects in the cutting direction from the blade tip of the inner peripheral blade 27. When the rocker beam 14 is closed to operate to cut the steel plate (21), Then, the steel plate is first cut by the outer peripheral blade 26, and then by the inner peripheral blade 27 from the anvil 15. The overhanging portion of the steel plate (portion indicated by reference numeral D in FIG. 5) was cut.

[0008]   Next, the operation of the cutting machine 11 of the present invention will be described. As shown in FIG. 5, the outer peripheral portion The tips of the blade 26 and the inner peripheral blade 27 are tapered, and the outer peripheral blade 2 The blade edge of No. 6 projects in the cutting direction by a dimension h from the blade edge of the inner peripheral blade 27. So lock When the Kabeam 14 is closed to cut the steel plate (21), the steps in FIG. At the time of a, even if the cutting edge of the outer peripheral blade 26 is in contact with the upper surface of the steel plate, the inner peripheral blade 2 The cutting edge of No. 7 is not in contact with the steel plate. At the time of step b when the rocker beam 14 is closed and rotated. At the point, the steel plate is first cut by the outer peripheral blade 26, and the steel plate is cut from the anvil 15. Partial d is overhanging. Then, the rocker beam 14 is closed to operate the process. At the time point of c, the portion of the reference numeral D is cut by the inner peripheral blade 27. this When steps a, b, and c are completed, the rectangular portion in plan view from the end surface of the steel plate 21) will be cut off. FIG. 6 is a plan view of a main part showing the steel plate 21 being cut. It is a figure. When the above steps a, b, and c are completed, the hatched rectangular part E is cut. I will Then, the cutting machine 11 is opened again, and the anvil 15 is inserted between the rectangular part e. Let it go. Then, the rectangular portion is cut. Repeat this operation to create a rectangle By cutting the parts G and J, the steel plate 21 is continuously cut like cutting paper with scissors. can do.

[0009]

[Effect of device]

  When cutting a steel plate with a conventional cutting machine, use a scissor to cut the paper. Even so, the width of the anvil is larger than the distance between the cut surfaces, so cut the steel plate continuously. I can't go. So I made two cuts in the steel plate and between the cuts The middle plate was bent and the anvil was inserted between them to cut it. for that reason It took a lot of time, labor, and time, and the work efficiency of steel plate cutting was extremely poor. Only In the steel plate cutting machine of the present invention, the rocker beam is attached to the left and right side plates and the side plates respectively. The tip of the rocker beam is closed by connecting the tip with a front plate so that it has a U-shape in plan view. When the mouth is rotated, the anvil can be passed through the inner space of the rocker beam Along with the left and right side plates of the rocker beam and the bite side of the front plate. Attach a cutting blade, divide the cutting blade into an outer peripheral blade on the outer peripheral side and an inner peripheral blade on the inner peripheral side. Further, the cutting edge of the outer peripheral blade is formed so as to protrude in the cutting direction from the blade edge of the inner peripheral blade. So Therefore, when cutting the steel sheet, first cut with the outer peripheral blade, then with the inner peripheral blade. It is possible to cut the part of the steel plate that is more overhanging. That is, from the end surface of the steel plate You can cut the rectangular part in plan view, but the width of the cut is the same as the width of the rocker beam, Wider than the width of the anvil. Therefore, cut the steel plate continuously with the scissors. Since it can be cut off, it reduces the labor, labor and time in the steel plate cutting work, and the cutting work efficiency Can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a steel sheet cutting machine of the present invention when opened.

FIG. 2 is a diagram showing a rocker beam seen from B of FIG.

FIG. 3 is a cross-sectional view of a main part viewed from CC in FIG.

FIG. 4 is a side view of the steel sheet cutting machine of the present invention when the steel sheet cutting machine is closed.

FIG. 5 is a view showing a process of cutting a steel plate by the steel plate cutting machine of the present invention.

FIG. 6 is a plan view of an essential part showing a steel plate being cut by the steel plate cutting machine of the present invention.

FIG. 7 is a side view showing a cutting machine according to an embodiment of the prior art.

8 is a cross-sectional view taken along the line AA of FIG.

FIG. 9 is a perspective view of an essential part of a steel plate showing the order of cutting the steel plate by a conventional cutting machine.

[Explanation of symbols]

1 cutting machine 3,13 frame body 4,14 rocker beam 5,15 anvil 6,7,20 cutting edge 8,16 hydraulic cylinder 11 Steel plate cutting machine 21 steel plate 22,23 Side plate 24 front plate 25 Inner space 26 Outer peripheral blade 27 Inner peripheral blade

Claims (3)

[Scope of utility model registration request] 1. A base of a rocker beam is pivotally supported on a frame body by a pin, the rocker beam is rotatable by a hydraulic cylinder with the pin as an axis, and an anvil corresponding to the rocker beam is fixed to the frame body. A cutting machine in which cutting blades are attached to the rocker beam and the anvil, respectively, and both cutting blades can be opened and closed in a crossing manner, and the rocker beam is a flat plate by connecting left and right side plates and front end parts of the side plates. The rocker beam has a U-shaped shape so that the anvil can be passed through the inner space of the rocker beam when the rocker beam is closed and rotated, and the left and right side plates of the rocker beam and the biting surface side of the front plate A steel plate cutting machine with a cutting blade attached along the edge. 2. The steel plate cutting machine according to claim 1, wherein the right and left side plates of the rocker beam, the cutting blades mounted along the bite surface side of the front plate, and the outer peripheral side blade on the outer peripheral side. A steel sheet cutting machine, characterized in that it is formed separately from the inner peripheral blade on the inner peripheral side. 3. The steel sheet cutting machine according to claim 2, wherein the blade edge of the outer peripheral blade is formed so as to protrude in the cutting direction from the blade edge of the inner peripheral blade, and the rocker beam is closed to operate the steel sheet. The steel plate cutting machine is characterized in that, when cutting the steel plate, the steel plate is first cut by the outer peripheral blade, and then the part of the steel plate protruding from the anvil is cut by the inner peripheral blade.