JP2534140B2 - Metal shears with replaceable multiple cutting edges - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is a heavy-duty shearing machine mounted on a backhoe and driven by a hydraulic cylinder, which effectively treats wastes, particularly metal wastes, and recycles them. It is a type of shearing machine that shears to a usable size. When industrial buildings are dismantled, pipes of various diameters and lengths, structural beams such as I-shaped steel, channel steel, and angle steel, metal plates, various vehicles, truck frames, railway vehicles, etc. Wastes of different shape, size and size are produced, where the shears do not depend on their size or shape and the metal work pieces do not wedge or bite with respect to the shears. It must be able to pick up, move and cut pieces of metal.

[Conventional technology]

This type of conventional device is based on our US patent 4.670.983,
Best represented in 4.686.767. Other prior art techniques include Ramun et al. U.S. Pat.
403.431, Ramun et al., US Pat. No. 4.439.921, Ramun et al., US Pat. No. 4.450.625, LaBounty, US Pat.

The invention shown in Ramun et al., U.S. Pat.

A patentable improvement included in the present invention relates to a cutting portion mounted on a fixed and movable blade of a shears. For example, in patent '983, the fixed blade is
On the first outermost end of the fixed cast steel blade 22, there is an elongated hard cutting blade section 43 located inside a set of spaced upright guides 45. In addition, the shears have an adjustable wear plate 44 located on the other guide 45,
One is pointed for engagement for metal shearing and engages all three hard cutting sections 37, 38 and 39 of the mover blade 23 of the shears shown in the '983 patent. ing.

In the present invention, the pointed guide 45 is left in a reduced width, and a set of substantially diamond-shaped replaceable cutting blade portions are positioned adjacent and fixed. It forms the actual cutting edge portion of the blade.

Similarly, the sharpened cutting edge portion 37 and the cutting blade portions 38 and 39 of the movable blade of the '983 shear remain with the elongated cutting blade portions and are replaced by a set of cutting blade portions,
One is square in plan view and the other is rectangular.

The square cutting blade part consists of a total of 8 cutting blades, 4 on each side, and the peripheral blades. When one of the cutting blades wears, it is partially removed and fixed. It is mounted for quick and easy positioning so that it can be replaced with a new cutting edge in alignment with the moving blade's cutting edge.

Examples Backhoes used in industry are driven machines with extendable booms and hydraulically controlled pistons and cylinders mounted thereon. The dipstick is usually pivoted to the boom,
The bucket is usually mounted on the tip of a dipstick and is driven by one or more hydraulic pistons and cylinders that are part of the backhoe hydraulic system.

The present invention is an improvement on backhoe appendages used to manipulate, shear and move structural beams, pipes, cables and other structural components that normally emerge when a structure is demolished instead of a bucket. .

Referring to FIG. 1, a boom 10 of a backhoe has a mounting pin 11 penetrating near its outer end and pivotally supports a fixed blade 12 having a bushing 13 engaged with the mounting pin 11. The second bushing 14 on the fixed blade 12 is the second on the piston rod 16 of the piston and cylinder assembly 17.
Is engaged with the pin 15 of. Although not shown, the cylinder is pivotally attached to the boom 10. Fixed blade 12
Is a one-piece cast steel structure with parallel beams 18 in part.
A single, integrally cast steel moveable blade 19 is pivotally engaged to the fixed blade 12 by an adjusting shaft and thrust bearing located at 20 in FIG. Axis 21 has the aforementioned patents 4.670.983 and 4.68.
Located laterally in the movable blade 19 with respect to the thrust bearing in the bushing as disclosed in 6.767.

Referring now to FIGS. 1, 2 and 3, fixed blade 12
It can be seen that is fixed to the mounting pins 11 and 15 of the boom 10 and piston rod 16 inside the ends thereof by elongated and horizontally spaced bushings 13 and 14, respectively. The beam 18 of the fixed blade 12 carries a bifurcated bearing assembly 22 which pivotally positions the second hydraulic piston and cylinder assembly between the spaced beams 18 of the fixed blade 12. The piston rod 24 is pivotally attached to the transverse pin 25 at the bifurcated end 26 of the movable blade 19. Pipes 27 and 27 'respectively connect the ends of the hydraulic cylinder 23 with a central accessory to which hydraulic fluid is selectively supplied by the hydraulic system of the backhoe in which the mounting is provided.

Still referring to FIGS. 1, 2, and 3, the movable blade
19 has a hook shape in general, and a hard cutting blade portion 29 that can be replaced at its free end, and primary, secondary, and tertiary hard cutting blade portions 30, 31 and 32 located at several positions of the movable blade 19. Which are located on the part of the movable blade 19, two of which are arranged so as to form an angle with each other at an angle of about 60 °, one of which the cutting edge part 30 is a secondary cutting edge part. You can see that they are lined up in common with 31. The part 30 can be replaced.

Referring to FIG. 6, an enlarged detail view of the outer end portion of the movable blade 19 can be seen with the replaceable cutting blade portions 30 in place, and in FIGS. Can be seen in plan view and end elevation view, respectively. The replaceable plurality of cutting blade portions 30 has an opening at the center at 33 and is formed of hard steel to form four cutting blades on each of its two sides. The four cutting edges on the side of the part 30 shown in plan view in FIG. 7 are shown in A, B, C and D, in FIG. 8 this is an end view of part 30, 3 out of 4 cutting blades on one side A, B, C
And three cutting blades AA, DD and CC on the opposite side of section 30 and cutting blades B and D shown in FIG. 7 on opposite sides with a vertical line just behind cutting blades B and D You can see that they overlap.

The replaceable cutting blade sections 30 thus have eight effective cutting blades, are square in plan view and are provided in a recess on the side of the movable blade 19 by suitable construction. Thus, the replaceable plurality of cutting edge portions 30 form a fixed effective replaceable cutting edge portion along the hard cutting edge portions 31 and 32 when it is attached to the movable blade 19.

Still referring to FIGS. 1 and 6, both sides of the opening 33 in the plurality of replaceable cutting blade portions 30 are enlarged so that fasteners such as bolts 34 can pass through the matching openings in the movable blade 19. It can be seen that it has been placed and retains the coplanar outer surface of one portion 30.

Referring to FIGS. 1, 2, 3, 5 and 9, as best seen in FIGS. 1 and 5, an integral cast steel fixed blade
12 is secured with multiple fasteners and has a hardened cutting edge portion 36, which may be located inside a set of secondary, replaceable cutting edge portions 37 and 38. Can be seen. Interchangeable cutting edge portions 37 and 38 of suitable thickness are of various shapes and together have a plurality of cutting edges similar to the exchangeable cutting edge portions 30 described above. Moreover, a continuous cutting edge is formed on the fixed blade 12 together with the cutting edge portion 36. The fixed blade 12 includes a hard cutting blade portion 29, a plurality of replaceable cutting blade portions 30 and a movable blade.
Hard cutting edge part 31 at an angled position of 19 31
And is consistent with 32.

Referring to FIGS. 4 and 5, the secondary replaceable cutting blade portions 37 and the replaceable cutting blade portions 38 are the beam 18
It can be seen that it is supported by the upper shelf 39 and is secured to the beam 18 by fasteners 40. Other beam 18
Has a permanently fixed upright semi-rigid triangular member 41 disposed in the opposite direction with a secondary plurality of replaceable cutting blade portions 37 on the opposite beam 18 and replaceable by a fastener 43. A plurality of cutting blade wear plates 42 are located. A plurality of replaceable cutting edge wear plates 44 of the same shape are located directly below the replaceable cutting edge wear plates 42 and are directly attached to the parallel beam 18 by fasteners 45.

Referring particularly to FIGS. 5, 9 and 10, the replaceable plurality of blade wear plates 42 and 44 are generally diamond-shaped (see FIG.
10), which have an opening in the center, which is adapted to form a suitable recess to fit the heads of fasteners 43 and 45 therethrough. I understand. Fasteners 43 and 45 can be rotated to replace replaceable blade wear plates 42 and 44 so that the four blades on each side of cutting blade portion 37 are continuously positioned at the uppermost wear site. I am trying.

Still referring to FIGS. 5 and 9, the intermediate replaceable cutting blade portions 38, also having a central opening and removably secured to the beam 18, are also removable and partially It can be seen that it has four cutting edges on each side so that it can be rotated and gives eight cutting edges in the same manner as the replaceable multiple cutting edge portions 30 on the movable blade 19 as described above. .

As shown in FIGS. 1 and 6, wear plate 46 is flanked by movable blade 19 which slidably engages a plurality of replaceable cutting blades and surface wear plates 42 and 44.

The wear plate 46 is positioned to form an angle on the side of the moveable blade 19 such that the wear plate 46 first engages the wear plate 42 when the moveable blade 19 moves relative to the fixed blade 12 during a shearing operation, The wear plate 46 then slides and engages the wear plate 42 and the wear plate 44 at the same time as they are positioned at substantially the same angle as the wear plate 46. This respective wear plate arrangement increases the contact surface between the movable blade 19 and the fixed blade 12 and ensures retention of the movable blade 19 in the desired common shear plane with respect to the fixed blade 12. This action is further enhanced by the formation of shear blades and flanks on the movable blade 19 so that it is located at the centerline of the piston rod 24 of the hydraulic cylinder 23, and the transverse pin 25 at the bifurcated end 26 of the movable blade 19. And pivotally engage.
The structure and construction of the movable blade 19 and the means for transmitting its movement are best represented in the end view of FIG. 2 and the plan view of FIG.

Those skilled in the art will appreciate that when the movable blade 19 moves with respect to the fixed blade 12 and between a plurality of replaceable cutting blade portions 37 and 38 respectively and with respect to the elongated cutting blade portion 36, this is between the beams 18 of the fixed blade 12. You can see it enter the slot. The front and back ends of the slot are indicated by the letter S in some figures.

This invention is the assignee of this invention Allied Gator, Inc., Youngs
It can be seen that this is related to the substantial improvement in the actual cutting wear cutting edge portion of the metal shears disclosed by U.S. Pat. Nos. 4,670,983 and 4,686.767, assigned to town Ohio.

The disclosures of US Patents 4.670.983 and 4.686.767 are incorporated herein by reference.

While one embodiment of the present invention has been shown and described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention and within the scope of the following claims. Is clear.

[Brief description of drawings]

FIG. 1 is a side view of a metal shear having a plurality of replaceable cutting blade portions mounted on a backhoe boom or dipstick. 2 is an end view of the shears shown in FIG. FIG. 3 is a plan view of the shears shown in FIG. FIG. 4 is an enlarged sectional view taken along the line 4-4 in FIG. FIG. 5 is a sectional view taken along the line 5-5 in FIG. FIG. 6 is an enlarged detailed view of the movable blade of FIG. FIG. 7 is a plan view of a plurality of replaceable cutting blade portions found in FIG. FIG. 8 is an end view of the plurality of replaceable cutting blade portions of FIG. 7. 9 is an enlarged detail view of a portion of the fixed blade of FIG. 1 showing a plurality of replaceable cutting blade portions. FIG. 10 is a plan view of one of the plurality of cutting blade portions seen in FIG. 10 …… Dip stick 11 …… Mounting pin 12 …… Fixed blade 13,14 …… Bushing 15 …… Pin 16 …… Piston rod 17 …… Piston and cylinder assembly 18 …… Parallel beam 19 …… Movable blade 20 …… Adjusting shaft and thrust bearing 21 …… Axis 22 …… Bearing assembly 23 …… Hydraulic cylinder 24 …… Piston rod 25 …… Crossing pin 26 …… End 27, 27 ´ …… Tube 29 …… Hard cutting end part 30、31、32 …… Hard cutting blade part 33 …… Center opening 34 …… Bolt 36 …… Hardened cutting blade part 37,38 …… Cutting blade part 39 …… Shelf 40 …… Zipper 41 …… Triangular member 42 …… wear plate 43 …… fastener 44 …… cutting blade wear plate 45 …… fastener 46 …… wear plate

Claims (9)

(57) [Claims] 1. A backhoe metal shear having a boom having a piston and cylinder assembly and a metal shear mounted on the boom, the metal shear having a cutting blade portion (36). Fixed blade (12), movable blade (19) having a plurality of cutting blade portions (30, 31, 32) thereon, and movable blade (19) pivotally attached to the fixed blade (12) Means (20), the movable blade (19) and the cutting blade portion (30, 31, 32)
A slot (5) in the fixed blade (12) that receives and maintains the fixed blade (12) and the movable blade (19) to ensure a relationship for cutting. 30,31,32) are removably fixed to the movable blade (19) to form a continuous cutting surface, and at least one of the cutting blade portions (30,31,32) is
The cutting edge portion (30,31,32) has a plurality of sides having at least two cutting areas (A, AA, C, CC) on at least opposite sides, and the cutting edge portion (30, 31, 32) is , 3
From the position with the cutting blade (C) aligned with the rest of 2) to the other position with the cutting blade (B) on the other side aligned with the rest of the cutting blade part (30, 31, 32) One of the cutting blade parts (32) that has been moved and is near the pivoting means (20)
One is a metal shearing machine characterized in that the angle is offset with respect to the remaining cutting blade portions (30, 31, 32). 2. The metal shearing machine according to claim 1, wherein at least one of the plurality of cutting edge portions (30, 31, 32) has four equal cutting edge sides (A, B, C, D). A metal shears having four right angles. 3. The metal shearing machine according to claim 1, wherein the plurality of cutting blade portions (30, 31, 32) are known in thickness and height, respectively, but these cutting blade portions are continuous cutting blades. A metal shearing machine characterized by exhibiting. 4. The metal shearing machine according to claim 1, wherein the plurality of cutting blade portions (30, 31, 32) are attached to the movable blade (19) to form a continuous cutting blade.
The cutting blade portion (32) of the means (20) for pivotally attaching the movable blade (19) to the fixed blade (12).
Directly adjacent to the first cutting edge portion (32) is substantially shorter than the length of the second cutting edge portion (31) adjacent to the first cutting edge portion (32), and the movable blade (19) and the first and second The cutting blade portions (32, 31) of 2 are oriented in the direction of the means (20) for attaching the work piece to be cut along the fixed blade (12) and pivotally mounting the movable blade (19) and others. A metal shearing machine, characterized in that it is configured to generate momentum and an increased shearing force when moved. 5. The metal shearing machine according to claim 1, wherein a plurality of wear plates (42, 44) are removably attached to the fixed blade (12), and the fixed blade (12) comprises:
The cutting blade portion (30, 31, 3) on the movable blade (19)
The slot (S) that slides into some of the 2)
A metal shearing machine, characterized in that 6. The metal shears of claim 5, wherein at least one of said plurality of wear plates (42,44) forms at least one cutting edge side on at least one side thereof. A metal shears, characterized in that it is shaped and adapted to be placed exchangeably on the fixed blade (12). 7. The metal shearing machine according to claim 6, wherein at least one of the plurality of wear plates (42, 44) is 4 pieces.
A metal shears having three equal sides and four corners. 8. The metal shearing machine according to claim 1, wherein the plurality of cutting blade portions (30, 3) of the movable blade (19).
1,32) is the cutting blade part (3) of the fixed blade (12).
6) A metal shearing machine having a shearing relationship with respect to 6) throughout the shearing motion of the fixed blade (12) and the movable blade (19). 9. A backhoe metal shear having a boom having a piston and cylinder assembly and a metal shear mounted on the boom, the shear having a stationary cutting portion (36). Blade (12), movable blade (19) having a plurality of cutting blade portions (30, 31, 32) thereon, and means for pivotally attaching the movable blade (19) to the fixed blade (12) (20), the movable blade (19) and the cutting edge part (30, 31, 32)
A fixed blade (12) for receiving and maintaining the fixed blade (12) and the slot (5) in the fixed blade (12) for ensuring the relationship of the movable blade (19) to cutting. ) Relevant cutting edge part (36,37,38)
Is removably attached thereto to form a continuous cutting edge, at least one of the cutting edge portions (36,37,38) being
Cutting edge portion (36,37,38) having a plurality of sides with at least two cutting areas on at least two of the sides
From a position with a cutting edge on one side aligned with the rest of the inside to another position with a cutting edge on the other side aligned with the rest of the cutting edge portion (36,37,38) A metal shearing machine characterized by being placed on it so that it can be modified.