JP5393799B2 - Direct acting guide for piled hammer falling bodies - Google Patents

Description

  The present invention relates to a linear motion guide for a falling body of a pile driving hammer, comprising at least one bearing housing that at least partially surrounds the falling body.

International Publication No. 89/8747

  Such stake hammers are used in foundation work for stakes on the ground, especially the bottom of the water. In foundation work, piles are hit and the piles are driven into the ground, so the fallen object is periodically lifted and dropped. The falling body itself is guided in the linear motion guide of the pile driving hammer, and the falling body can perform a linear lifting motion in the axial direction within the linear motion guide. Known pile hammers have a linear guide made of metal and the necessary lubricant so that the falling body is guided in the vertical motion with as little friction and wear as possible. In pile driving in water, this lubricant can reach the water and contaminate the water.

  An object of the present invention is to provide a linear motion guide for a falling body of a pile driving hammer of the type described above, which is used without a lubricant.

  According to the present invention, according to the present invention, a sliding member is provided on at least one bearing housing, the sliding member abuts on the falling body to guide the falling body, and the sliding body is attached with the falling body attached. This is solved by making the moving member detachable. A linear guide provided with a sliding member can be used without a lubricant, but especially when the sliding member is made of plastic, it must be considered that the sliding member will wear out over time. I must. If the sliding member made of plastic is simply disposed between the falling body and the bearing housing, it takes a great deal of effort to replace the worn sliding member with a new sliding member. In particular, the drop body must be removed from the bearing housing for this replacement. This consumes a considerable amount of time and is economically disadvantageous since the pile hammer cannot be used for pile driving operations during a new replacement of the sliding member. Therefore, the present invention makes it possible to attach and detach the sliding member with the falling body attached. This provides great economic benefits because the sliding member can be replaced much faster than the prior art without the need to remove and attach the fallen body.

  In the first embodiment of the present invention, the bearing housing has a plurality of mounting openings, the mounting openings are distributed over the entire circumference of the bearing housing, and each from the outside of the bearing housing to the inside of the bearing housing facing the falling body. The sliding members are respectively disposed in the mounting openings, and the mounting openings can be closed by one support member from the outside. When the sliding member is attached, the sliding member is pushed through the attachment opening until it comes into contact with the falling body. Next, the mounting opening is closed by the support member, and the support member supports the sliding member from the outside and presses the sliding member against the falling body. During use of the pile hammer, the lateral force required to guide the falling body is transmitted to the support member via the sliding member and thus to the bearing housing.

  In a simple form of the first embodiment, the peripheral surface of the sliding member and the inner surface of the mounting opening are at least partially formed into a cylindrical shape, and the front surface of the sliding member formed as the sliding surface is dropped. Formed to fit around the body. Usually, the falling body is formed in a cylindrical shape, that is, has a cylindrical peripheral surface. Here, the front surface of the sliding member has a sliding surface formed in a complementary shape, and when the sliding member is attached, the sliding surface abuts over a wide range on the cylindrical peripheral surface of the falling body. . Therefore, the falling body can move without being obstructed in the vertical direction, and is always guided by the entire sliding surface of the sliding member.

  The present invention can also be used when the falling body has another shape, for example, an oval or square cross section. In the former case, the sliding surface of the sliding member is formed as another curved surface suitable for the falling body. In the latter case, the sliding surface of the sliding member can be formed as a flat surface.

  The shape of the peripheral surface of the sliding member is advantageously determined by the peripheral surface of the mounting opening. Since the mounting opening can be easily formed as a hole, it is particularly advantageous when the inner surface of the mounting opening and the peripheral surface of the sliding member are cylindrical.

  The present invention is further improved by allowing the support member to have a central protrusion and forming a central opening in the sliding member so that the central protrusion of the support member can be inserted. If it does in this way, the position of the sliding member with respect to a support member will be fixed, and, thereby, it will prevent that attachment of a sliding member inclines or it becomes an incorrect position.

  It is particularly advantageous if the four mounting openings for the four sliding members are distributed over the entire circumference of the bearing housing.

  In the configuration according to the present invention, it is proposed that the sliding member or the supporting member is provided with a compensating portion having elasticity in the lateral direction with respect to the moving direction of the falling body. The compensating portion can compensate for a small difference in length, particularly a difference resulting from wear of the sliding member as it continues to be used.

  If the sliding member can be fixed to the supporting member on the surface facing the supporting member, on the one hand, the fixed sliding member is not likely to fall unexpectedly, so that the mounting is easy. In particular, the position of the sliding member relative to the support member is fixed with respect to rotation about an axis defined in a direction transverse to the moving direction of the falling body. Therefore, when attaching a unit composed of a sliding member and a support member, attention should be paid only to proper positioning of the support member. The sliding member will then automatically be in its proper mounting position.

  In a development of this measure, the sliding member is threaded on the surface facing the support member and / or has a hole in the support member for passing a fixing screw, preferably at least one sliding member At least one sealing portion for preventing water from entering is provided between the member and the corresponding support member. By this measure, the sliding member can be fixed to the support member with a screw at its appropriate mounting position. When used in water, a sealing part that can be formed, for example, as an O-ring prevents water from entering the linear guide according to the invention. Further, for example, the lubricant is prevented from flowing out from the inside of the linear motion guide into the water.

  An alternative variant is also useful for this purpose, in which the sliding member is provided with a cylindrical projection on the surface facing the support member, the support member has a hole for receiving the cylindrical projection, and is cylindrical A thread for stopping the fixing screw is formed on the protrusion.

  The support member has a hole formed on the outer side in the radial direction of the sliding member to allow the fixing screw to pass therethrough, and a measure for allowing the fixing screw to be screwed into a corresponding screw hole of the bearing housing The support member is fixed against, in particular also in the above-mentioned direction of rotation in both variants, so that finally the appropriate mounting position of the sliding member with respect to the bearing housing and the falling body is fixed To help.

  In a second exemplary embodiment of the present invention, the bearing housing is accessible from the outside and preferably has at least one mounting opening that can be closed, and the strip-like sliding member passes through the mounting opening to the falling body. It can be inserted tangentially, preferably the bearing housing is provided on its inside with a groove along the outer periphery of the falling body for receiving the strip-like sliding member. The belt-like sliding member is guided through the groove, so that, for example, the worn belt-like sliding member can be removed from the mounting opening and a new belt-like sliding member can be inserted into the groove tangentially to the falling body. . On the other hand, the groove prevents the belt-like sliding member from shifting in the moving direction of the falling body. The advantage of this form of using a strip-like sliding member is that the strip-like sliding member surrounds at least the majority of the outer periphery of the falling body and thus guides it in a very wide range against the falling body.

  In one form of the second exemplary embodiment of the present invention, the belt-like sliding member is composed of sliding single bodies linked to each other. The sliding unit itself has sufficient rigidity to withstand the large force required to guide the falling body. On the other hand, the sliding unit is chained to form a belt-like sliding member that passes through the mounting opening. The variability required for the introduction of the belt-like sliding member is guaranteed.

  Therefore, in a further embodiment of this embodiment, the sliding unit has a protruding part protruding on one side and a recessed part on the opposite side, and the recessed part accepts the protruding part of the adjacent sliding unit. By being formed as such, the sliding single bodies can be chained by shape coupling.

  Preferably, the single sliding member is made of a polymer material and is manufactured by an injection molding method. Furthermore, if necessary, in order to improve the function of the sliding member, it is possible to combine two or more types of sliding elements each made of two or more different materials. At this time, it consists of a section where the belt-like sliding members are periodically arranged in order, and each of these sections is composed of two or more different sliding single bodies.

  In a preferred embodiment, the bearing housing has two opposing mounting openings, into which one strip-like sliding member can be inserted. Therefore, each belt-like sliding member surrounds about half of the outer periphery of the falling body. The cost in the case of two strip-like sliding members is relatively low. The cost is less than this only when a single strip-like sliding member is arranged. In that case, however, the strip-like sliding member must surround the fallen body over an outer peripheral range greater than 280 ° so that the same favorable results can be achieved with respect to the guidance of the fallen body. Therefore, such a belt-like sliding member is very long and particularly difficult to introduce during installation.

  Each of the mounting openings can be closed by a lid, and preferably, the measures to ensure that the lid is fixed to the bearing housing by screws prevent the strip-like sliding member from falling off and dirt from entering the internal space. The

  In the following, two exemplary embodiments of the invention will be described in more detail on the basis of the drawings.

It is a) a top view and b) sectional view of a guide tube provided with two bearing housings of a linear guide according to the present invention. It is a perspective view of the bearing housing in 1st Embodiment in the state which removed the sliding member. It is a top view of FIG. 2 of the bearing housing. It is a perspective view in the state where the sliding member of the bearing housing was attached. It is the top view which abbreviate | omitted illustration of the bearing housing in the fall body which the sliding member is contacting. It is a) perspective view and b) sectional drawing of the bearing housing in the 2nd Embodiment of this invention. It is a perspective view of the sliding single body of a strip | belt-shaped sliding member. It is a perspective view of the strip | belt-shaped sliding member in the 2nd Embodiment of this invention.

  A falling body 1 is shown in FIG. 1, and the falling body 1 is movably guided in a guide tube 3 in a vertical direction 2. The guide tube 3 is provided with two bearing housings 4, which respectively surround the guide tube 3 and connect the sections 3 a, 3 b and 3 c of the guide tube 3 to each other to form the guide tube 3. The joining of the sections 3a, 3b, 3c is effected in particular by the flange of the bearing housing 4 which can be seen in FIG. As best seen in FIGS. 2 to 4, the bearing housing 4 is provided with four sliding members 5 made of plastic. Arranged inside the opening 6. The four mounting openings 6 are arranged to face each other as a pair, and are arranged at intervals of 90 ° over the entire circumference of the bearing housing 4. In the attached state (FIG. 4), the four sliding members 5 are fixed in the four attachment openings 6 by the four support members 7.

  The sliding member 5 has a cylindrical peripheral surface 8, and this peripheral surface 8 is received and supported by a cylindrical inner surface 9 of a mounting opening 6 formed in a complementary manner thereto. The front surfaces of the sliding members 5 are each formed as a sliding surface 10 and are formed so as to conform to and contact the peripheral surface 11 of the falling body 1. As best seen in FIG. 5, the peripheral surface 11 of the falling body 1 is a cylindrical surface, and the sliding surface 10 of the sliding member 5 is formed in a complementary shape to the sliding member 5. Substantially the entire sliding surface 10 abuts on the peripheral surface 11 of the falling body 1 and reliably guides the falling body 1 when the falling body 1 moves in the vertical direction 2.

As best seen in FIG. 3, each support member 7 has one central protrusion 12. As best seen in FIGS. 2 and 4, each sliding member 5 has one central opening 13 into which the central protrusion 12 of the support member 7 can be inserted. .
Further, the sliding member 5 is provided with four cylindrical projections 14 on the surface facing the support member 7, and these cylindrical projections 14 have a function of fixing the sliding member 5 to the support member 7. For this purpose, the support member 7 is provided with four holes 15 which serve to receive the cylindrical projections 14 of the sliding member 5. The cylindrical protrusion 14 has a thread for stopping the four fixing screws 16 from the outside of the support member 7. When the linear guide according to the present invention is used in water, the system can be provided with a sealing part, for example by an O-ring. The support member 7 itself has a flange portion 17 projecting radially outward, and the flange portion 17 has eight holes 18 through which eight screws 19 are passed. As best seen in FIG. 2, the screw 19 can be screwed into each of eight screw holes 20 in the bearing housing 4, and the support member 7 is fixed to the bearing housing 4.

  A second exemplary embodiment of the present invention is shown in FIGS.

  The bearing housing 24 has two mounting openings 26 that can be reached from the outer side 21 of the bearing housing 24. As shown in FIG. 6, the belt-like sliding member 25 can be inserted through the mounting opening 26 in a tangential direction with respect to the falling body 1. it can. For ease of viewing, the falling object 1 is not shown in FIG.

  The bearing housing 24 has a groove 23 along the circumference of the falling body 1 (not shown) on the inner side 22, and the belt-like sliding member 25 is received in the groove 23.

  After the belt-like sliding member 25 is introduced, the mounting opening 26 is closed by the lid 27. FIG. 6 shows one of the mounting openings without the lid 27 and the mounting opening 26 closed by the lid 27. Naturally, after removing the second lid 27, the second sliding member 25 can be introduced into the second mounting opening 26, so that the falling body 1 (not shown) Mostly surrounded by two sliding members 25. The two lids 27 are fixed to the bearing housing 24 by screws 32. For this purpose, the bearing housing has eight screw holes 33 into which the screws 32 can be screwed.

  FIG. 8 shows the structure of the belt-like sliding member 25 composed of a large number of sliding single bodies 28. All the sliding single bodies 28 are integrated to form a sliding surface 30 for guiding the falling body 1 on the surface facing the falling body 1. As best seen in FIG. 7, each sliding unit 28 has two protrusions 29, and these protrusions 29 fit into two recesses 31 of adjacent sliding units, respectively. And are connected in shape, thereby ensuring a chain of multiple sliding elements 28.

  The sliding unit 28 is made of plastic, for example, and can be manufactured by an injection molding method. For this purpose, various polymer materials are suitable.

  However, various materials can be combined with each other as required. In this case, there are at least two kinds of sliding single bodies 28 each made of two or more kinds of different materials. At this time, the belt-like sliding member 25 is composed of sections that are periodically arranged in order, and each section has two or more different sliding single bodies 28.

DESCRIPTION OF SYMBOLS 1 Falling body 2 direction 3 Guide pipe 4 Bearing housing 5 Sliding member 6 Mounting opening 7 Support member 8 Peripheral surface 9 Inner surface 10 Sliding surface 11 Peripheral surface 12 Protruding part 13 Opening part 14 Cylindrical protrusion 15 Hole 16 Fixing screw 17 Flange Portion 18 Hole 19 Screw 20 Screw hole 21 Outside 22 Inside 23 Groove 24 Bearing housing 25 Sliding member 26 Mounting opening 27 Lid 28 Sliding single body 29 Convex part 30 Sliding surface 31 Concave part 32 Screw 33 Screw hole

Claims (16)

A linear guide for a falling body (1) of a pile hammer comprising at least one bearing housing (4, 24) at least partially surrounding the falling body (1),
At least one bearing housing (4, 24) is provided with a sliding member (5, 25) made of plastic,
The sliding member (5,25) is state, and are not in contact to the falling body (1) in order to guide the falling body (1),
The bearing housing (4) has a plurality of mounting openings (6);
These mounting openings (6) are distributed over the entire circumference of the bearing housing (4) and from the outside of the bearing housing (4) to the inside of the bearing housing (4) facing the falling body (1). Penetrate,
Sliding members (5) are respectively disposed in the mounting openings (6),
A linear motion guide for a falling body of a pile driving hammer, wherein the mounting openings (6) can be closed from the outside by one supporting member (7) . The peripheral surface (8) of the sliding member (5) and the inner surface (9) of the mounting opening (6) are at least partially formed into a cylindrical shape,
The front of the sliding surface (10) the sliding member formed as (5), according to claim 1, characterized in that a shape adapted to the peripheral surface of the falling body (1) (11) A linear guide for the falling body of a pile hammer. The support member (7) has a central protrusion (12);
The center opening (13) is formed in a sliding member (5), The said center protrusion (12) of the said supporting member (7) can be inserted, The claim 1 or 2 characterized by the above-mentioned. A linear guide for the falling body of a pile hammer. Pile according to any one of claims 1 to 3 , characterized in that the four mounting openings (6) for the four sliding members (5) are distributed over the entire circumference of the bearing housing (4). Linear guide for hitting hammers. The sliding member (5) or the support member (7), one of claims 1, wherein a compensation unit having elasticity in the transverse direction to movement direction (2) of the falling body (1) is provided 4 A linear motion guide for a falling body of a pile driving hammer according to claim 1. The falling member of a pile driving hammer according to any one of claims 1 to 5 , wherein the sliding member (5) can be fixed to the supporting member (7) with a surface facing the supporting member (7). Linear motion guide. A thread is formed on the surface of the sliding member (5) facing the support member (7) and / or has a hole (15) for passing the fixing screw (16) in the support member (7),
Between at least one sliding member (5) and the support member corresponding thereto (7), in claim 6, characterized in that at least one sealing portion is provided to prevent the ingress of water Linear motion guide for the falling body of the described pile hammer. A cylindrical protrusion (14) is provided on the surface of the sliding member (5) facing the support member (7), and a hole (15) for receiving the cylindrical protrusion (14) is formed in the support member (7). Have
The linear guide for a falling body of a pile driving hammer according to claim 6 , wherein a thread for stopping the fixing screw (16) is formed on the cylindrical protrusion (14). The support member (7) has a hole (18) formed on the radially outer side of the sliding member (5) for passing a screw (19);
9. The pile hammer according to claim 1 , wherein the screw (19) can be screwed into a corresponding screw hole (20) of the bearing housing (4). Linear motion guide. The bearing housing (24) has at least one mounting opening (26) accessible from the outside (21) and closeable;
A belt-like sliding member (25) can be inserted in a tangential direction with respect to the falling body (1) through the mounting opening (26),
The bearing housing (24) is characterized in that a groove (23) is provided on the inner side (22) along the outer periphery of the falling body (1) for receiving the belt-like sliding member (25). A linear motion guide for a falling body of a pile driving hammer according to claim 1. 11. A linear motion guide for a falling body of a pile driving hammer according to claim 10 , wherein the belt-like sliding member (25) is composed of sliding single bodies (28) linked to each other. The sliding unit (28) has a convex portion (29) protruding on one side and a concave portion (31) on the opposite side,
The concave portion (31) is formed so as to receive the convex portion (29) of the adjacent sliding single body (28), so that the sliding single body (28) can be chained by shape coupling. A linear motion guide for a falling body of a pile driving hammer according to claim 11 . The linear motion guide for a falling body of a pile driving hammer according to claim 11 or 12 , wherein the sliding unit (28) is made of a polymer material and manufactured by an injection molding method. Two or more kinds of sliding single bodies (28) are each made of two or more kinds of different materials,
The belt-shaped sliding member (25) consists of sections arranged in order periodically,
14. The linear motion guide for a falling body of a pile driving hammer according to claim 11 , wherein each of the sections has two or more different sliding single bodies (28). The bearing housing (24) has two opposing mounting openings (26);
15. A straight body for a falling body of a pile driving hammer according to claim 10, wherein one strip-like sliding member (25) can be inserted into each of the mounting openings (26). Motion guide. Each mounting opening (26) can be closed by a lid (27);
The pile cover hammer drop body according to any one of claims 10 to 15 , wherein the lid (27) is fixed to the bearing housing (24) by a screw (32). Linear motion guide.

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