JP3187924U - Crushing hammer - Google Patents

Abstract

A novel and improved crushing hammer and inlet member for a crushing hammer are provided.
The crushing hammer is provided with at least one inlet member (20) around the pressure medium conduit (14) at the inlet (16). The inlet member 20 comprises an elongated tubular protective member. The inlet member 20 is fixed so as not to move in relation to the pressure medium conduit 14. The inlet member 20 is movable in the longitudinal direction in relation to the inlet 16 of the protective casing 6.
[Selection] Figure 2

Description

The present invention relates to a crushing hammer, and more particularly to its inlet.
The present invention also relates to an inlet member.

  The field of the invention is described in further detail in the preamble of the independent claims of the present application.

  When drilling a tunnel in soft rock or breaking boulders into small pieces, a crushing hammer can be used to break the stone. The crushing hammer includes a striking device for transmitting a shock pulse to a tool that breaks the material by transmitting the shock pulse to the material to be broken. Crushing hammers are often provided with a protective casing around them to protect them from damage and impurities. The inlets for hoses and pipes through the protective casing are difficult to configure so that they can withstand harsh working conditions and keep the protective casing sealed. The prior art crushing hammer inlet has disadvantages.

  It is an object of the present invention to provide a new and improved crushing hammer and a crushing hammer inlet member.

  The crushing hammer of the present invention is provided with at least one inlet member around the pressure medium conduit at the inlet, and the inlet member is composed of an elongated tubular protective member, and is fixed so that the inlet member does not move relative to the pressure medium conduit. The inlet member is movable in the longitudinal direction with respect to the inlet of the protective casing.

  The present invention is characterized in that the inlet member comprises an elongated tubular protective member and includes at least one longitudinal dividing surface for opening the inlet member for transverse placement around the pressure medium conduit of the crushing hammer. .

  According to the technical idea of the disclosed solution, at least one inlet member, which is an elongated tubular member, is arranged around the pressure medium conduit. The inlet member is mounted so as not to move to the pressure medium conduit, thus allowing the pressure medium conduit and the inlet member to move together in relation to the protective casing inlet.

  The advantage of the disclosed solution is that the inlet member forms a protective element around the pressure medium conduit. Thus, the inlet member serves as a self-sacrificial wear portion between the pressure medium conduit and the protective casing.

  In one form of the invention, the inlet member includes at least one elongated dividing surface. This allows the inlet member to be opened for transverse placement around the pressure medium conduit. Thus, the inlet member can be installed in place without having to remove the pressure medium conduit. There is no need to remove the mounting bracket provided at the end of the pressure medium conduit.

  According to one form of the invention, the inlet member includes a single longitudinal dividing surface. In that case, the inlet member can be bent so as to open at the dividing surface, after which the initially opened opening is pressed in a transverse direction onto the pressure medium conduit. The inlet member may then be attached to the bending pressure medium conduit to return to its tubular shape, or the split surfaces may be secured together.

  According to one form of the invention, the inlet member comprises two dividing surfaces, in which case the inlet member is formed of two halves that are arranged opposite each other. The half part is arranged at a predetermined position on the pressure medium conduit in the transverse direction. Each half portion forms a circumferential half of the annular cross section of the inlet member, and the half portions may be somewhat unequal in size. The half parts may be arranged so as to contact each other, or may be arranged so that a gap is interposed therebetween.

  According to one form of the invention, the inlet member is formed of a flexible hose. The hose is made of at least mainly polymer material or rubber material. Commercially available and readily available standard hoses may be used, and therefore the inlet member is easy and inexpensive to manufacture. In its simplest form, a pre-sized hose member is cut and then split in half in the longitudinal direction, or at least one longitudinal split seam is applied to the member. May be.

According to one form of the invention, the inlet member is formed at least mainly from a hose made of polyurethane.
According to one form of the invention, the inlet member is formed of a hose made at least primarily of a polymeric material. The hose can be a commercially available and readily available standard, so the inlet member is easy and inexpensive to manufacture.

According to one form of the invention, the inlet member is attached to the pressure medium conduit by an adhesive.
According to one form of the invention, the inlet member is attached to the pressure medium conduit by an interference fit. The inlet member can be made of a heat-shrinkable material so that it can shrink tightly against the outer surface of the pressure medium conduit upon heating.

  According to one form of the invention, the inlet member is attached to the pressure medium conduit by one or more hose clamps. Two hose clamps can be used and these can be arranged at the end portion of the inlet member.

  According to one form of the present invention, the inlet member can be provided with an integral locking member capable of fixing it to the pressure medium conduit. The fixing member can be arranged so that the divided surfaces of the inlet member can be held in contact with each other.

  According to one form of the present invention, the inlet members are arranged two or more rings or two or more rings arranged one behind the other so that they together form a sufficiently long tubular inlet member around the pressure medium conduit. Includes a short tubular member.

According to one form of the invention, the cross-sectional shape of the outer surface of the inlet member is circular.
According to one form of the invention, the cross-sectional shape of the outer surface of the inlet member is a square, i.e. a square or a rectangle.

  According to one form of the invention, the inlet member is formed by wrapping at least one strip-shaped protective member around the pressure medium conduit. The band may be a spiral member or a band of vulcanized rubber material disposed around the pressure medium conduit. In this embodiment, a tubular protective member is also formed around the hydraulic hose.

According to one form of the invention, an inlet member of wear resistant material is molded around the pressure medium conduit. The body can be made of a polymer material, a rubbery material, a composite material, or the like.
According to one form of the invention, an essentially sealed joint is provided between the inlet member and the protective casing.

  According to one form of the invention, the inlet is provided with one or more adjusting members which are moved in the transverse direction of the inlet member and then pressed against the outer surface of the inlet member. Is done. The adjustment member can be, for example, a rubber material or a polymer material. The adjustment member can be a plate-like member with a cross-sectional shape corresponding to the shape of the outer surface of the pressure medium conduit and can be pressed against the pressure medium conduit.

  According to one form of the invention, the inside of the protective casing is pressurized, so that the pressure acting inside it is higher than the external air pressure. It can be pressurized by compressed air. The protective casing can be substantially airtight, while a slight leak, for example through the inlet and tool opening, does not cause any significant adverse effects. Pressurization is effective to keep impurities and moisture out of the protective casing.

According to one form of this invention, an inlet_port | entrance is provided in the end plate of the base end side of a protective casing.
According to one form of the invention, the protective casing has a side plate. The side plate has an inspection hatch that can be opened and closed. The openable / closable inspection hatch is disposed in an upper portion of the protective casing and is disposed adjacent to an inlet of an end plate of the protective casing. That is, the inspection hatch is disposed at a part of the corner where the side plate and the end plate of the protective casing are joined.

  According to one form of the invention, the inlet is provided with a guide sleeve having an opening through which the inlet member is disposed. The guide sleeve is clearly longer than the wall thickness of the protective casing, but is clearly shorter than the length of the inlet element. The guide sleeve allows the inlet element to be supported over a distance that is longer than the distance when the inlet element abuts directly against the opening in the protective casing.

According to one form of the invention, the guide sleeve is formed from two halves.
According to one form of the present invention, the guide sleeve includes a lateral support flange having a plate-like seal member disposed therebetween.

  According to one aspect of the present invention, the guide sleeve and the seal member connected thereto are fixed at predetermined positions in the transverse direction by the inspection hatch. The inspection hatch can be arranged to press the seal member against the pressure medium conduit.

  According to one form of the invention, the inlet member inside the protective casing extends entirely to the joint between the pressure medium conduit and the impact device. Thus, the inlet member prevents bending of the pressure medium conduit and damage caused by bending of the pressure medium conduit. The inlet member can be extended to reach the fitting. Alternatively, the inlet member may extend a short distance from the fitting, in which case the distance of the inlet member is shorter to the fitting than to the inlet.

The forms disclosed above can be combined in various ways to provide a combination of features suitable for a particular purpose.
Some embodiments of the solution will be described in more detail with reference to the accompanying drawings.

FIG. 6 is a schematic side view of a crushing hammer that is placed on a boom of an excavator and can be used to destroy boulders. 1 is a schematic cross-sectional view of a crushing hammer that can be used to excavate a rock cave. FIG. 6 is a schematic cross-sectional view of an inlet structure shown with a pressure medium conduit provided through a protective casing to an impact device. 1 is a schematic view of the structure and arrangement of a crushing hammer inlet structure and associated inlet member, seal member and inspection hatch. FIG.

  For ease of understanding, the embodiment is illustrated in a simplified manner. In the drawings, the same reference numerals are assigned to similar components.

  In FIG. 1, an excavator 1 has a boom 2, which is provided with a crushing hammer 3 that can be used to break a stone 4 such as a boulder or rock. The crushing hammer 3 includes a striking device 5 arranged in a protective casing 6. The striking device 5 is used to send an impact pulse to a tool 7 that transmits the impact pulse to the object to be destroyed. At the same time, the crushing hammer 3 is pressed toward the stone 4. The tool 7 moves to the striking device 5 by a distance limited in its longitudinal direction. The tool 7 does not rotate around its longitudinal central axis.

  FIG. 2 shows an alternative use of a crushing hammer to excavate a rock cave. That is, the crushing hammer 3 may be used for separating the stone material 4 from the surface of the rock cave. In the embodiment, the crushing hammer 3 is mainly used in the horizontal direction.

  The crushing hammer 3 includes a protective casing 6 that surrounds the crushing hammer 3. The protective casing 6 is made of a plate material that is sufficiently thick and impact resistant and therefore provides excellent mechanical protection for the crushing hammer 3. The protective casing 6 may include a side surface 9, a distal end plate 10 provided at the end portion on the tool 7 side and extending in the transverse direction, and a proximal end plate 11 provided at the proximal end portion on the opposite side. . The structure may be a plate structure assembled by welding. The proximal end plate 11 can be provided with a fixing member for fixing the crushing hammer 3 to the boom of the work machine. Alternatively, the fixing member may be disposed on the side plate. The tool 7 is driven through a tool opening 8 in the tip plate 10 and a gasket 12 can be provided in the opening.

  The hitting device 5 of the crushing hammer 3 is a pressure medium operation type. That is, the device is provided with pressure energy from the pressure source 13 through the pressure medium conduit 14. Typically, the striking device 5 is hydraulically actuated. The impact piston or similar impact element 15 of the strike device 5 is driven back and forth by hydraulic pressure, which strikes the proximal end of the tool 7 to generate an impact pulse. Of course, the operation of the striking device 5 may be based on other types of striking member motions.

  The protective casing 6 is provided with an inlet 16 through which the pressure medium conduit 14 extends from the outside of the protective casing 6 to its inside and further to the impacting device 5. The pressure medium conduit 14 may be a hydraulic hose connected to the striking device 5 by a fitting 17. The fitting 17 typically has a thicker portion at the outermost end of the hydraulic hose.

  The striking device 5 can be supported on the inner surface of the protective casing 6 by a damper 18. The striking device 5 may move inside the protective casing 6 when it receives a force during operation. A longitudinal movement of a few centimeters, typically 1-2 cm, can occur between the striking device 5 and the protective casing 6. Corresponding motion is also transmitted to the pressure medium conduit 14, which moves in relation to the inlet 16. Thus, rubbing occurs in the pressure medium conduit, which can cause damage to the pressure medium conduit after a certain period of time. To circumvent this problem, the inlet 16 can be provided with an inlet structure 19 that includes at least one inlet member 20 disposed about the pressure medium conduit 14. The inlet member 20 acts as a self-sacrificing element on wear and protects the hydraulic hose.

  3 and 4 show an inlet structure 19 having an inlet 16 provided in the proximal plate 11. The inlet 16 can be opened to an inspection opening 21 provided at a part of a corner where the base end plate 11 of the protective casing 6 and the side surface 9 are joined. The inspection opening can be opened and closed by an inspection hatch 22. Referring to FIG. 3, the inlet member 20 is an elongated tubular member that surrounds the pressure medium conduit 14 and extends from above the inlet 16 to approximately the fitting 17. A guide sleeve 23 having an opening can be provided at the inlet 16, and the inlet member is inserted through the opening of the guide sleeve. The length of the guide sleeve 23 is set such that the sleeve can sufficiently support the inlet member 20. The guide sleeve 23 can be perpendicular to the surface of the protective casing 6. Alternatively, the pressure medium conduit 14 and the inlet member 20 may be guided in a desired direction using the sleeve 23 as an angular position as shown in FIG.

  The guide sleeve 23 can be formed from two parts. The first portion is fixed to the base end plate 11, and the second portion 25 can be a detachable member that is fixed at a predetermined position using the inspection hatch 22. The second portion 25 of the guide sleeve can include lateral support flanges 26, 27. The lateral support flanges are spaced apart from each other by a predetermined distance, and an adjustment member 28 can be disposed in the gap between the two. The adjustment member 28 is made of a plate-like member, and its end surface is formed so as to coincide with the curved outer surface of the inlet member 20. The adjustment member 28 can be made of rubber, for example. The inspection hatch 22 can be used to press the adjustment member 28 toward the inlet member 20. In that case, the adjusting member 28 seals against the inlet member 20 and simultaneously presses the opposite surface of the inlet member 20 against the guide sleeve 23, thus forming a substantially airtight inlet.

  FIG. 3 further shows pressurizing means for pressurizing the inside of the protective casing 6. Gas pressure can be supplied from the pressure conduit P, typically by compressed air, to provide a pressure in the protective casing 6 that prevents impurities from entering the protective casing 6 above the external pressure. . The inlet for the pressure medium conduit 14 and the tool 7 can be airtight. When the inlet is configured to seal only dust and dust particles, gas leaks from the inside of the protective casing 6 to the outside through the inlet. The gas flow leaking through the inlet efficiently prevents impurities from entering the protective casing 6. Since pressurization is performed, the crushing hammer 3 is also suitable for work performed in water.

  The embodiment of FIG. 4 is similar to the embodiment of FIG. This embodiment is different in that the inlet member 20 is formed by two half portions 20a, 20b having a dividing surface 29 extending in the longitudinal direction. The half parts 20a, 20b can be arranged around the pressure medium conduit 14 in the transverse direction, thus eliminating the need to remove the fitting 17. The split surfaces 29 of the half parts 20a, 20b are arranged in contact with each other, after which the half parts could be fixed at their ends, for example by hose clamps or similar fixing members. An attachment portion 30 for the removed fixing member can be provided at the end of the inlet member 20. Alternatively, the fixing member may be integrated with the mounting portion.

  The features disclosed in this application may be used as is, regardless of other features, while the features disclosed in this application may be used where necessary. Various combinations may be provided in combination.

  The drawings and the associated description are only intended to illustrate the idea of the invention. The details of the invention may vary within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Excavator 2 Boom 3 Crushing hammer 4 Stone 5 Impact device 6 Protective casing 7 Tool 8 Tool opening 9 Side surface 10 Tip plate 11 Base plate 12 Gasket 13 Pressure supply source 14 Pressure medium conduit 15 Impact element 16 Inlet 17 Fitting 18 Damper DESCRIPTION OF SYMBOLS 19 Entrance structure 20 Inlet member 20a Half body part 20b Half body part 21 Inspection opening part 22 Inspection hatch 23 Guide sleeve 25 2nd part 26 Lateral support flange 27 Lateral support flange 28 Adjustment member 29 Dividing surface 30 Attachment part

Claims (9)

A striking device (5) for delivering a shock pulse to a tool (7) attachable to the crushing hammer (3);
A protective casing (6) in which a striking device (5) is arranged and in which a tool (7) can be arranged through its first end,
The protective casing (6) is provided with at least one inlet (16) in which at least one pressure medium conduit (14) is arranged for supplying pressure medium to the striking device (5). In the crushing hammer to break the material,
The inlet (16) is provided with at least one inlet member (20) around the pressure medium conduit (14),
The inlet member (20) comprises an elongated tubular protective member;
The inlet member (20) is fixed against movement with respect to the pressure medium conduit (14);
Crushing hammer, characterized in that the inlet member (20) is movable longitudinally relative to the inlet (16) of the protective casing (6). The inlet (16) is provided with a guide sleeve (23) attached to the protective casing (6),
Crushing hammer according to claim 1, characterized in that the inlet member (20) is slidably arranged in an opening in the guide sleeve (23).   Crushing hammer according to claim 1 or 2, characterized in that the inlet (16) is provided with at least one adjusting member (28) which is pressed transversely against the inlet member (20).   Crushing hammer according to any one of claims 1 to 3, characterized in that the crushing hammer (3) includes means for pressurizing the interior of the protective casing (6). In the inlet member for the inlet of the protective casing of the crushing hammer,
The inlet member (20) comprises an elongated tubular protective member;
The inlet member (20) has at least one longitudinally extending dividing surface (29) that allows the inlet member (20) to be opened and disposed transversely around the pressure medium conduit (14) of the crushing hammer (3). An inlet member characterized by comprising.   The inlet member (20) includes a first portion (20a) and a second portion (20b), and a split surface (29) extending in the longitudinal direction is formed between the two, and the split surfaces are brought into contact with each other. 6. The inlet member according to claim 5, wherein the inlet member is arranged.   The inlet member according to claim 5 or 6, wherein the inlet member is made of polyurethane.   The inlet member according to any one of claims 5 to 7, wherein the inlet member is a flexible hose-like member.   The inlet member according to any one of claims 5 to 8, wherein the inlet member includes a fixing member at an end portion thereof.

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