JP2012006096A - Vibration-proof and sound-proof crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop and provide a vibration-proof and sound-proof crusher having excellent vibration-proof and sound-proof properties, strong in metal fatigue breakage and excellent safety, working efficiency and economic efficiency.SOLUTION: In the crusher comprising a piston part for transmitting blow energy of a crusher such as a hydraulic breaker and a chisel part mounted with a chisel receiving blow energy and crushing a rock, concrete and the like, elastic bodies such as a soft sheet, a soft packing, a rubber are provided to two positions of a gap part between a piston and a top end of a hammer in the piston part and a gap part between a chisel rear end in the chisel part and an anvil abutting on the hammer.

Description

    The present invention relates to a vibration proof / sound proof crusher.

    Conventionally, a breaker (crusher) that crushes bedrock or concrete foundation is used by mounting it on a hydraulic excavator machine, etc. The chisel attached to the breaker is operated by the breaker's hydraulic mechanism and hits the bedrock etc. Crushed. This chisel has a sharp tip, and when it is used, the tip gradually wears out and becomes round and the crushing effect is weakened. Therefore, it must be replaced with a new one each time, which is extremely uneconomical. For this reason, a long hole is drilled in the axial direction from the center of the tip of the chisel so that it can be used for a long time with one chisel, and a core material harder than the chisel is shrink-fitted or press-fitted. is there.

    However, in this product, the shape of the rear end portion of the core material and the shape of the hole bottom portion of the chisel body can theoretically be intimately adhered to each other.

    Furthermore, when they are not completely in close contact with each other, there is a disadvantage that the contact point is hardened by friction or impact due to friction and impact during use, and thus metal fatigue occurs and fatigue damage (breakage) occurs. It was.

    Therefore, to eliminate the above problems (defects) and mass-produce by machining, even if the shape of the bottom of the chisel and the shape of the rear end of the core are not in close contact or fit, Japanese Patent Laid-Open No. Sho 63-109920 (Patent Registration No. 1751956) has invented a method for manufacturing a chisel containing a core material that does not cause fatigue damage.

    However, with the passage of time, the awareness of environmental issues and pollution issues has become more severe than before, and further improvements (noise measures, vibration measures, etc.) are required.

    Therefore, in order to solve the above problems, the causes of noise and vibration are further investigated, and in order to absorb the noise and vibration, the structure containing the core material at the time of filing the above patent application is applied to the piston front end and the chisel rear end. A soundproofing measure is taken, and an elastic body is newly inserted into the outer periphery of the hammer and anvil to take a measure against vibration.

For reference, patent documents relating to breakers (crushers) that have been filed so far are introduced (see Patent Documents 1 to 3).
JP-A 63-109920 10-004691 Registered Utility Model No. 3019178

    Therefore, in order to solve the above problems, the present invention has developed a vibration proof / sound proof type crusher excellent in vibration proof / sound proof, resistant to metal fatigue damage, and excellent in safety, workability and economy.・ It is to provide.

    As means for solving this problem, there are two gaps, a gap between the piston and the tip of the hammer in the piston, and a gap between the chisel and the anvil that contacts the hammer at the rear end of the chisel. It is characterized in that an elastic body such as a soft sheet, soft packing or rubber is mounted.

    In addition, a hammer is fitted and inserted into a hole formed at the tip of the piston in the piston portion, and an elastic body such as a soft sheet, soft packing, or rubber is attached to the gap between the piston and the tip of the hammer, and An anvil is fitted in a hole formed at the rear end of the chisel in the chisel portion, and an elastic body such as a soft sheet, soft packing, or rubber is attached to the gap between the rear end portion of the chisel and the anvil. It is what.

    Further, an elastic body such as a soft sheet, a soft packing, or rubber is attached to a gap portion between a hole portion formed at the rear end of the piston in the piston portion and the piston shaft.

    As an effect of the present invention, on the piston side of the crusher, a piston provided with a substantially cylindrical hole portion in which a bottom portion is formed in a hemispherical shape in order to fit a hammer for hitting, an elastic body, and a fixing ring at the center of the tip And an elastic body that fits in the piston end hole, a fixing ring, and a hammer with a ring for preventing outflow, respectively, and a soft sheet or soft packing such as lead for noise and impact prevention at the bottom of the piston end hole. A stepped hole for inserting an anvil and an elastic body into the center of the rear end on the chisel side of the crusher and inserting a soft sheet, soft packing, rubber, etc. Chisel body with elastic body fitted into the stepped hole at the rear end of the chisel body, soft sheet such as lead for noise and shock prevention, soft packing, rubber etc. Each elastic body is provided, and the piston and In order to avoid the direct contact of the rod and reduce the sound and vibration, the anvil provided between the piston and the hammer between the piston tip and the rear end of the chisel A soft sheet such as lead for noise and impact prevention, and an elastic body such as soft packing and rubber were provided in the gaps between them, and an elastic body was inserted into the outer peripheral side surface of the hammer and anvil. Thus, it has excellent effects such as excellent vibration proofing and soundproofing, resistance to metal fatigue damage, and excellent safety, workability and economy.

1 is a partially cutaway sectional view showing an internal structure of the entire crusher according to an embodiment of the present invention. 1 is a partially cutaway sectional view showing an internal structure of a piston according to an embodiment of the present invention. FIG. 6 is a partially cutaway sectional view showing an internal structure of a piston according to another embodiment of the present invention. 1 is an enlarged cross-sectional view of an elastic body (lead) outflow prevention ring portion, (A) is a cross-sectional view when an O-ring is used, and (B) is a cross-sectional view when a V-packing is used. (C) is sectional drawing at the time of piston ring (made of iron) use. It is sectional drawing which shows one Example of this invention and shows the attachment detail of the anvil provided in the chisel rear end. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged detail view of an anvil showing an embodiment of the present invention, in which (A) is a front view of a neck with a linear shape, (B) is a front view of a neck with an R shape, and (C) is a straight neck. FIG. 5 is a partially cutaway front view with a concave shape and a bottom. FIG. 7A is an enlarged detailed cross-sectional view of the anvil insertion portion of FIG. 5, and FIG. 7B is a cross-sectional view of the anvil bottom portion of FIG. . The noise measurement comparison data of the vibration-proof / sound-proof type crusher (countermeasure product) of the present invention and the normal silent chisel are shown. It is sectional drawing which shows the other Example of this invention and shows the internal structure of a piston.

    As a form for carrying out the present invention, a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the impact energy and crushes rocks, concrete, etc. In the machine, the gap between the piston (4) and the tip of the hammer (5a) in the piston part and the rear end of the chisel (8) in the chisel part and the anvil (9) contacting the hammer (5a) It is composed of a vibration proof / sound proof type crusher characterized in that an elastic body (12) (11) such as a soft sheet, soft packing, rubber or the like is attached to each of the two gap portions.

    Further, in a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the impact energy and crushes rocks, concrete, etc., a piston ( 4) A hammer is inserted into the hole (4a) formed at the tip of the tip, and an elastic body such as a soft sheet, soft packing or rubber is provided in the gap between the tip of the piston (4) and the hammer (5a) ( 6) Attach (12) and insert the anvil (9) into the hole (8a) formed at the rear end of the chisel in the chisel portion, and in the gap between the rear end of the chisel and the anvil. It is composed of a vibration proof / sound proof type crusher characterized by mounting an elastic body (10) (11) such as a soft sheet, soft packing or rubber.

    Further, in a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the impact energy and crushes rocks, concrete, etc., a piston ( 4 ′) is characterized in that an elastic body (16′or16) such as a soft sheet, soft packing, rubber or the like is mounted in the gap between the hole (4′a) formed at the rear end of the piston 4 ′ and the piston shaft (19). It consists of a vibration-proof and sound-proof crusher.

    Therefore, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. First, FIG. 1 is a partially cutaway sectional view of the whole breaker, and FIG. 2 shows the internal structure of the tip of the piston (4). It is a partially broken sectional view shown. As shown in FIG. 2, a substantially cylindrical hole (4a) having a hemispherical bottom is formed at the center of the tip of the piston (4), and the hole (4a) A hammer (5a) in which an elastic body (6) such as a cylindrical rubber, a short cylindrical fixing ring (7) for preventing withdrawal and a ring (13) for preventing outflow are fitted on the outer peripheral surface, respectively. A soft sheet such as lead, or an elastic body (12) such as soft packing or rubber is provided in the gap between the hole bottom of the piston (4) and the hammer (5a).

    Further, the hammer (5a) provided in the tip center hole (4a) of the piston may be provided in a bowl-shaped hammer (5b) having an outer diameter of the tip portion enlarged as shown in FIG. Absent.

    In addition, the lead outflow prevention ring (13) provided at one end of the outer periphery of the piston is, as shown in FIG. 4 (A), an O-ring (13a) or as shown in FIG. 4 (B), As shown in FIG. 4C, either the V packing (13b) or the piston ring (made of iron) (13e) may be properly used depending on the use situation.

    FIG. 5 is a detailed cross-sectional view of the anvil provided at the rear end of the chisel. An appropriate clearance (S) is provided between the rear end surface of the chisel and the bottom surface of the flange of the anvil (9) to directly transmit the stress due to the impact of the piston. It is provided not to receive. Therefore, the stress propagation is received by an elastic body (11) such as a soft sheet such as lead provided at the bottom of the chisel hole, a soft packing or rubber, and absorbs sound.

    Furthermore, an elastic body (10) such as a substantially cylindrical rubber is inserted and provided on the outer periphery of the neck portion of the anvil (9). Moreover, as shown to FIG. 6 (A) (B), the shape of the neck part of an anvil (9) may be formed in either linear form or R shape according to a use condition. Further, as shown in FIG. 6C, the bottom of the anvil 9 ′ is formed in a concave shape, and the elastic body 11 is inserted into the recess as shown in FIG. 7B. I do not care.

    FIG. 7 is an enlarged detailed cross-sectional view showing an anvil mounting procedure provided at the rear end of the chisel in FIG. As shown in FIG. 7, a ring such as an O-ring (13c) or a V-packing (13d) for preventing lead outflow may be inserted under the neck of the anvil (9) according to the use situation.

    Next, the noise measurement comparison data of the vibration isolator / soundproof type crusher (TNB2E) and the conventional product (MKB150M) of this invention will be introduced. As shown in the comparison data in FIG. 8, the vibration-proof / sound-proof crusher (TNB2E) of the present invention is measured from a distance of 1 m when measured from a distance of -18 db and a distance of 5 m, compared to the conventional product (MKB150M). It has been found that each exhibits a damping effect of -14.4 db.

    In addition, although the comparative measurement about the effect with respect to an anti-vibration was not carried out this time, it can be estimated from the comparative data of an anti-sound measurement that it has an effect equivalent to an anti-sound effect also with respect to an anti-vibration.

    In addition to the present invention, in addition to the present invention, a chisel containing a core material (patent registration number 1751956) is used in combination with the present invention in order to further exhibit vibration and sound insulation effects.

    As another example, a crusher (B ′) using a piston (4 ′) that absorbs shock vibrations at the upper end of a piston (4 ′) for transmitting the impact energy of a crusher such as a hydraulic breaker to achieve a soundproof effect. The crusher is provided by grinding a cylindrical hole (4′a) at the center of the upper end of the piston (4 ′), and soft such as lead at the bottom of the hole (4′a). Insert an elastic body (16'or16) such as a metal sheet or rubber, cover the top with a cylindrical elastic body (17), and lock it at the upper end with a fixing ring (18) to prevent it from slipping out. The shaft (19) is inserted and provided.

    As shown in FIG. 9, a cylindrical hole (4′a) is ground at the center of the upper end of the piston (4 ′), and a soft sheet or soft packing such as lead is ground at the bottom of the hole (4′a). A shaft in which an elastic body (16'or 16) such as rubber or rubber is inserted, is covered with a cylindrical elastic body (17) at the top, and is locked at the upper end with a fixing ring (18) for preventing slipping out Since (19) is inserted and provided, the impact vibration of the piston is absorbed and a soundproofing effect is exhibited.

    The vibration proof / sound proof type crusher and the manufacturing method thereof according to the present invention are excellent in vibration proof / sound proof, strong against metal fatigue damage, and excellent in safety, workability, and economic efficiency. It has industrial applicability in that it contributes to many civil engineering and construction market relations.

DESCRIPTION OF SYMBOLS 1 Cylinder 2 Impact ring 3 Holder 3a Bushing 4 Piston 4 'Piston 4'a Hole 4a Hole 5a Hammer 5b Hammer 6 Elastic body 7 Fixing ring 8 Chisel 8a Stepped hole 9 Anvil 9' Anvil 9a Anvil (straight neck shape) Type)
9b Anvil (R-shaped neck)
9c Anvil (straight neck, bottom concave)
DESCRIPTION OF SYMBOLS 10 Elastic body 11 Elastic body 12 Elastic body 13 Ring 13a Ring (O-ring)
13b Ring (V packing)
13c Ring (O-ring)
13d Ring (V packing)
13e Piston ring (iron)
14 pin 15 bearing 16 elastic body 16 'elastic body 17 elastic body 18 fixing ring 19 piston shaft B crusher B' crusher

Claims (3)

    Piston (4) in a piston part in a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the impact energy and crushes rocks, concrete, etc. And the gap between the tip of the hammer (5a) and the rear end of the chisel (8) in the chisel and the anvil (9) in contact with the hammer (5a). An anti-vibration / sound-proof crusher equipped with an elastic body (12) (11) such as a sheet, soft packing or rubber.     Piston (4) in a piston part in a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the impact energy and crushes rocks, concrete, etc. A hammer is inserted into a hole (4a) formed at the tip of the elastic member, and an elastic body (6) (12) such as a soft metal sheet or rubber is provided in the gap between the piston (4) and the tip of the hammer (5a). ) And an anvil (9) is provided in a hole (8a) formed at the rear end of the chisel in the chisel portion, and a soft sheet or soft material is provided in the gap between the chisel and the rear end portion of the anvil. An anti-vibration / sound-proof crusher equipped with an elastic body (10) (11) such as packing or rubber. In a crusher comprising a piston part for transmitting impact energy of a crusher such as a hydraulic breaker, and a chisel part equipped with a chisel that receives the hit energy and crushes rocks, concrete, etc., a piston (4 ' ) An elastic body (16′or16) such as a soft sheet, soft packing, rubber or the like is mounted in the gap between the hole (4′a) formed at the rear end and the piston shaft (19). Vibration / soundproof crusher.

Images