JP5478552B2 - Interlocking device for spaced vibration vibrator and method for placing pile or wall - Google Patents

Description

  The present invention relates to an interlocking device for interlocking a plurality of vibratory hammers arranged apart from each other and a method for placing a pile or a wall.

  Conventionally, when placing a large-diameter pile such as a steel plate cell having a cell diameter of more than 20 m, a plurality of (multiple) vibratory hammers are attached to the upper end of the pile in an annular shape, and they are connected and interlocked to make one strike. Construction equipment is configured and placement is performed. For example, it describes in patent documents 1-3.

  A universal joint or a tire coupling is used as an interlocking tool that connects adjacent vibratory hammers and transmits rotational force. When two units are linked, tire coupling is advantageous.

  As a vibro hammer, a multi-axis vibro hammer having a drive shaft and one or a plurality of driven shafts is known, and examples thereof include a biaxial vibro hammer and a four-axis vibro hammer.

  FIG. 8A is a perspective view showing a main part of a known biaxial vibro hammer 2. The biaxial vibrator hammer 2 has two axes of a drive shaft 14 and a driven shaft 15 (only a geometrical axis is shown for convenience) parallel to each other on a horizontal plane. A pulley 16 is attached to the drive shaft 14, and rotational force is transmitted by rotational drive means (not shown) to be driven to rotate. Each of the drive shaft 14 and the driven shaft 15 is provided with a fixed eccentric weight 11 fixed so as to rotate together with the shaft and a movable eccentric weight 12 not fixed to the shaft. Therefore, the biaxial vibro hammer 2 includes two pairs of fixed and movable eccentric weights. Further, the biaxial vibro hammer 2 is provided with four gears 13 for transmitting the rotational force of the drive shaft 14 to all the eccentric weights 11 and 12 for synchronous rotation.

  The fixed eccentric weight 11 and the movable eccentric weight 12 are synchronously rotated while maintaining a constant phase difference. Therefore, the eccentric moment about one axis is the sum of the eccentric moments of the fixed eccentric weight 11 and the movable eccentric weight 12, and the total eccentric moment of the biaxial vibrator hammer 2 is It is the sum of the eccentric moments. By adjusting the rotational phase difference between the fixed eccentric weight 11 and the movable eccentric weight 12, the total eccentric moment, that is, the amplitude of the biaxial vibrator hammer 2, can be increased or decreased from zero to the maximum.

  FIG. 8B is a schematic plan view showing an example of a connection method when a plurality of two-axis vibro hammers are interlocked. A plurality of biaxial vibro hammers 2 are juxtaposed in a row, and the driven shafts 15 of the adjacent biaxial vibro hammers 2 are connected by an interlocking tool 5 such as a universal joint or a tire coupling. Such an interlocking tool 5 can transmit a rotational force while allowing a connecting angle within a predetermined range.

  FIG. 9A is a perspective view showing a main part of a known four-axis vibratory hammer 4. The four-axis vibrator hammer 4 has a drive shaft 14 and a driven shaft 15 parallel to each other on a horizontal plane in the upper stage, and two driven shafts 15 parallel to each other on the horizontal plane in the lower stage. The four-axis vibro hammer 4 includes four pairs of fixed / movable eccentric weights and eight gears 13.

  FIG. 9B is a schematic plan view showing an example of a connection method when a plurality of four-axis vibro hammers are linked. For convenience, the upper and lower stages are shown separately. A plurality of four-axis vibratory hammers 4 are juxtaposed in a row, and the upper driven shafts and the lower driven shafts of the adjacent four-axis vibratory hammers 4 are connected by an interlocking tool 5 such as a universal joint or a tire coupling.

  FIG. 10A is a plan view schematically showing a conventional placing apparatus 100 attached to a steel plate cell 200 having a diameter D of about 20 m, and FIG. 10B is a schematic front view (inside the dotted line box). (Omitted). The placing device 100 includes an annular base member 110 having a shape along the upper edge of the steel plate cell 200, a gripping device 111 that is attached to the lower surface of the base member 110 and grips the upper edge of the steel plate cell 200, 12 vibro hammers arranged and fixed on the upper surface of the base member 110. Each vibratory hammer is, for example, the biaxial vibratory hammer 2 in FIG. 8 or the four-axial vibratory hammer 4 in FIG. Adjacent vibratory hammers are connected by the interlocking tool 5 as shown in FIG. 8 or FIG. When the vibratory hammer is connected in a ring shape using a large number of universal joints, the start point position and the end point position are not connected in order to reduce adverse effects due to advance and delay of rotation transmission and accumulation of angular errors in each connection. The plurality of vibratory hammers 2 and 4 are interlocked by appropriate driving means (not shown) via a pulley 16 attached to the driving shaft of each vibratory hammer.

  Here, “interlocking” means a synchronized operation, and means that the vibration phases of a plurality of vibratory hammers connected to each other match.

  Patent Documents 4 to 6 describe a vibratory hammer including an automatically controllable amplitude variable device that continuously changes the phase difference of the fixed / movable eccentric weight without stopping the operation. In Patent Document 4, a biaxial vibratory hammer is described, and in Patent Document 5, a four-axis vibratory hammer is described.

Japanese Patent Publication No.58-36126 JP 59-41523 Japanese Patent Publication No. 61-22692 Japanese Patent No. 3731169 JP-A-9-3891 JP 2002-66458 A

  In a large-diameter pile having a diameter of about 20 m as shown in FIG. 10, a plurality of vibratory hammers can be annularly arranged on the base member 110 and connected. On the other hand, one or two vibro hammers are used for a small-diameter pile having a diameter of less than 3 m. When two vibratory hammers are interlocked, two vibratory hammers can be provided side by side on the base member 110 and connected by a tire coupling or a universal joint.

  However, when a pile having a medium diameter of about 3 m to 20 m is placed, sufficient placement performance (amplitude and vibration acceleration) may not be obtained only by using two general-purpose vibrator hammers. One solution may be to connect two large vibratory hammers with high driving performance and interlock, but such large vibratory hammers that are not versatile are very expensive to manufacture and transport. Therefore, it is not realistic.

  Therefore, it is conceivable to increase the number of general-purpose vibrator hammers to three or more to improve the placement performance. Considering the balance between the installation area derived from the diameter of about 3 m to 20 m and the driving force, it is most appropriate to use four or six vibrator hammers. For example, four or six vibratory hammers may be arranged on the base member in an annular shape, connected by an appropriate interlocking tool, and interlocked. However, when four or six vibratory hammers are arranged in an annular shape within the installation area derived from the medium diameter, adjacent vibratory hammers within the allowable angle range of conventional interlocking tools (universal joints and tire couplings) It is impossible to connect the four or six vibro hammers in a ring shape as shown in FIG.

  In view of the above situation, the present invention provides an interlocking device and a pile or wall for interlocking a plurality of spaced apart vibro hammers for driving a pile having a medium diameter of about 3 m to 20 m. An object is to provide a body placing method.

In order to achieve the above object, the present invention provides the following configuration. The numbers in parentheses are reference numerals of the drawings described later, and are attached for reference.
According to the first aspect of the interlocking device of the vibrated hammer separated by the present invention, a first vibro hammer (21) and a second vibrated hammer (22) which are spaced apart from each other at both ends of the substantially diameter of the cylindrical pile. The third vibrator hammer (23) connected to the first vibrator hammer (21) via the first interlocking tool (51), and the second vibrator hammer (22) via the second interlocking tool (52). In order to link at least four biaxial vibro hammers (21, 22, 23, 24) comprising a fourth vibro hammer (24) connected to each other, the first vibro hammer ( 21) An interlocking device (6) for connecting the second vibratory hammer (22) to each other, comprising: (a) a pair of toothed pulleys (61A, 61B) and a first tooth bridged between them; With belt (61C) and one tooth A first toothed belt portion (61) provided so that the pulley (61A) rotates integrally with one shaft of the first vibro hammer (21), and (b) another pair of toothed pulleys (62A 62B) and a second toothed belt (62C) bridged between them, and one toothed pulley (62A) rotates integrally with one shaft of the second vibrator hammer (22). A second toothed belt portion (62) provided on the belt, (c) the other toothed pulley (61B) of the first toothed belt portion (61) and the other of the second toothed belt portion (62). And an interlocking gear portion (65) having a plurality of gears (65A, 65B) for transmitting rotation to and from the toothed pulley (62B).

  In the interlocking device of the first aspect, the other toothed pulley (61B) of the first toothed belt portion (61) has a third interlocking tool (53) on one side of the pulley shaft (61E). It is preferable that the fifth vibratory hammer (25) can be connected via the sixth and the sixth vibratory hammer (26) can be connected to the other side via the fourth interlocking tool (54).

  According to the second aspect of the interlocking device of the vibrated hammer separated from each other according to the present invention, a first vibro hammer (41) and a second vibrated hammer (42) which are spaced apart from each other at both ends of the substantially diameter of the cylindrical pile. The third vibrator hammer (43) connected to the first vibrator hammer (41) via the first interlocking tool (51), and the second vibrator hammer (42) via the second interlocking tool (52). In order to link at least four multi-axis vibro hammers (41, 42, 43, 44) composed of a connected fourth vibro hammer (44), the first vibro hammer is arranged along the substantially diametrical direction of the pile. (41) and the second vibro hammer (42), the interlocking device (7), wherein (a) each of the multi-axis vibro hammers (41, 42, 43, 44) is at least 2 in the vertical direction. Has a multi-stage structure and has each stage One or a plurality of shafts are provided, and the interlocking device (7) has a multi-stage structure having the same number of stages as the multi-axis vibro hammer, and in each stage of the interlocking device (7), (b ) A pair of toothed pulleys (71A, 71B) and a first toothed belt (71C) bridged between them, and one toothed pulley (71A) is one of the first vibratory hammer (41). A first toothed belt portion (71) provided to rotate integrally with one shaft; (c) another pair of toothed pulleys (72A, 72B) and a second tooth spanned between them; A second toothed belt portion (72) provided with a toothed belt (72C) and one toothed pulley (72A) rotating integrally with one shaft of the second vibro hammer (42); (D) The other toothed pulley (71B) of the first toothed belt portion (71) and the second toothed belt And an interlocking gear portion (75) having a plurality of gears (75A, 75B) for transmitting rotation to and from the other toothed pulley (72B) of the gear portion (72). .

  In the interlocking device of the second aspect, in each stage of the interlocking device, the other toothed pulley (61B) of the first toothed belt portion (61) is further connected to one side of the pulley shaft (71E). A fifth vibratory hammer (45) can be connected to the second via a third interlocking tool (53) and a sixth vibratory hammer (46) can be connected to the other side via a fourth interlocking tool (54). Is preferred.

  The pile or wall placing method according to the present invention is characterized in that the pile or wall is placed using a plurality of vibro hammers that are interlocked by the interlocking device of each aspect described above.

  In accordance with the present invention, the interlocking device for the vibratory hammers arranged at a distance is arranged along a substantially diametrical direction in order to interlock the first and second vibratory hammers arranged at both ends of the piles with a substantially diameter. The first toothed belt portion interlocked with the shaft of the first vibrator hammer, the second toothed belt portion interlocked with the shaft of the second vibrator hammer, and the first and second toothed belt portions. And an interlocking gear portion for transmitting rotation. Thereby, it is possible to make it interlock | cooperate with two vibro hammers spaced apart by the both ends of the substantially diameter of a pile. Furthermore, each of the first and second vibratory hammers is connected and interlocked with another adjacent vibratory hammer via a normal interlocking tool, and as a result, four vibratory hammers can be interlocked. As a result, the four vibratory hammers can be arranged in a well-balanced manner and can be linked stably.

  By using the toothed belt, the rotational force can be transmitted efficiently without causing slippage. At the same time, since it is a belt, it is possible to flexibly cope with various diameters in the pile, that is, various separation distances. Furthermore, impact can be reduced by using a toothed belt.

  Furthermore, since it is possible to connect and link the vibro hammers one by one via the normal interlocking tool to both sides of one pulley shaft of the first toothed belt portion, a total of six vibro hammers are interlocked. Can do. Since the two vibrator hammers added to the four vibrator hammers are symmetrically arranged on both sides of the interlocking device, they can be stably interlocked.

  The interlocking device of the present invention enables a cylindrical pile having a medium diameter to be driven or pulled out using four or six general-purpose vibro hammers. For example, when constructing a long pile having a medium diameter, sufficient driving or drawing performance can be obtained without increasing the cost.

It is a top view which shows roughly the state which connected the four biaxial vibro hammers using one Example of the interlocking apparatus of the several vibro hammer by this invention. (A) is an enlarged plan view of the interlocking device shown in FIG. 1, and (b) is a schematic view taken along arrow A in FIG. 1. It is a top view which shows roughly the state which connected the six biaxial vibro hammers using one Example of the interlocking | linkage apparatus shown in FIG. It is a top view which shows roughly the state of the upper stage which connected 4 units | sets of 4 axis | shaft vibro hammers using another Example of the interlocking apparatus of the several vibro hammer by this invention. It is a top view which shows roughly the state of the lower stage which connected four four-axis vibro hammers using another example of the interlocking device of a plurality of vibro hammers by the present invention. It is an enlarged plan view of the interlocking device shown in FIGS. 4A and 4B. It is the B arrow schematic diagram of FIG. 4A and FIG. 4B. It is a top view which shows roughly the state of the upper stage which connected 6 units | sets of 4 axis | shaft vibro hammers using another Example of the interlocking | linkage apparatus shown to FIG. 5A and 5B. It is a top view which shows roughly the state of the lower stage which connected six four-axis vibro hammers using another Example of the interlocking | linkage apparatus shown to FIG. 5A and 5B. (A) and (b) are respectively schematic side views of still another embodiment of a plurality of vibratory hammer interlocking devices according to the present invention. (A) is a perspective view which shows the principal part of a well-known biaxial vibro hammer, (b) is the schematic top view which showed an example of the connection method in the case of interlocking | combining two or more biaxial vibro hammers. (A) is a perspective view which shows the principal part of a well-known 4 axis | shaft vibro hammer, (b) is the schematic plan view which showed an example of the connection method in the case of interlocking | combining two or more 4 axis | shaft vibro hammers. (A) is the top view which showed typically the conventional placing apparatus attached to the steel plate cell, and FIG.10 (b) is a schematic front view (The inside of a dotted line enclosure is abbreviate | omitted).

Embodiments of the present invention will be described below with reference to the drawings illustrating examples.
(1) Embodiment of interlocking device in four biaxial hammers FIG. 1 schematically shows a state in which four biaxial hammers are connected using an embodiment of the interlocking device of a plurality of vibratory hammers according to the present invention. FIG. The interlocking device is denoted by reference numeral 6. Each biaxial vibro hammer is denoted by reference numerals 21, 22, 23, and 24.

  In addition, in order to drive a pile or a wall body, the driving device provided with the four biaxial vibro hammers connected using the interlocking device 6 by this invention is the same structure as FIG.10 (b) mentioned above. It is installed (the same applies to another embodiment of the interlocking device described later). The placing device shown in FIG. 1 grips the upper edge of the steel plate cell 200 attached to the lower surface of the base member 110 (in this case, a disk shape) having a shape along the upper edge of the steel plate cell 200. And four biaxial vibrator hammers 21 to 24 arranged and fixed on the upper surface of the base member 110 and connected by the interlocking device 6.

  The biaxial vibro hammers directly connected by the interlocking device 6 are a first vibro hammer 21 and a second vibro hammer 22 arranged at both ends of a substantially diameter D of the pile 200. The “substantially diameter” is not limited to one exact diameter, but also includes a straight line (arc) near the diameter parallel to one diameter. The interlocking device 6 is disposed along the substantially diameter D direction of the pile 200. The third vibratory hammer 23 is connected to the first vibratory hammer 21 adjacent in the circumferential direction via an interlocking tool (tire coupling or universal joint) 51. Similarly, the fourth vibratory hammer 24 is connected to the second vibratory hammer 22 adjacent in the circumferential direction via the interlocking tool 52. The four biaxial vibrators 21 to 24 and the interlocking device 6 are arranged so that all the rotation axes are parallel to each other. With such arrangement and connection, the four biaxial vibro hammers 21 to 24 can be interlocked.

  In addition, when connecting two vibro hammers adjacent by the interlocking tools 51 and 52, if one is a right arrangement (indicated by R in the figure), the other is a left arrangement (indicated by L in the figure) One drive shaft 14 and the other driven shaft 15 are connected. In addition, although the vibration hammers of the right arrangement R and the left arrangement L have a configuration in which the mounting position of the drive pulley 16 is rotated by 180 ° in the horizontal plane, they are functionally the same. When two vibro hammers are connected, tire coupling is preferable.

  Prior to the description of the interlocking device 6, the biaxial vibro hammers 21 to 24 will be described with reference to FIG. In each of the biaxial vibrator hammers 21 to 24, a parallel drive shaft 14 and a driven shaft 15 that are spaced apart from each other in the horizontal direction are installed in the case 19, and these shafts are supported by bearings.

  A pair of fixed eccentric weight 11 and movable eccentric weight 12 are attached to the drive shaft 14. The fixed eccentric weight 11 is fixed to the drive shaft 14 so as to rotate integrally with the drive shaft 14. The movable eccentric weight 12 is pivotally attached via a bearing so as to be rotatable with respect to the drive shaft 14.

  One end of the drive shaft 14 projects to the outside of the case 19, and a drive pulley 16 is attached to the external projecting portion, and the rotational force of a rotational drive means such as a motor (not shown) is transmitted via the drive pulley 16 to be rotationally driven. The The frequency of the drive shaft 14 is controlled by a motor or the like.

  Another pair of fixed eccentric weight 11 and movable eccentric weight 12 are similarly attached to the driven shaft 15.

  In this embodiment, an amplitude variable device 17 is attached to an external projecting portion at one end of the driven shaft 15. The amplitude variabler 17 has a function of changing the rotational phase difference between the fixed eccentric weight 11 and the movable eccentric weight 12 and maintaining the constant phase difference. The amplitude variabler 17 is controlled by, for example, hydraulic control from the outside of the case 19 to rotate the movable eccentric weight 12 relative to the fixed eccentric weight 11 or hold it in a relatively stopped state. .

  A specific configuration of such an amplitude variable device 17 is disclosed in, for example, Patent Documents 4 to 6, and is well known. The amplitude variabler 17 can change the phase difference between the fixed eccentric weight 11 and the movable eccentric weight 12 even during rotation.

  The interlocking device according to the present invention can also be applied to a vibratory hammer that does not include an amplitude variable device.

  Four gears 13 are provided for synchronously rotating all of the two pairs of fixed eccentric weight 11 and movable eccentric weight 12. The rotational force transmitted to the drive shaft 14 via the drive pulley 16 is transmitted from the gear 13 on the drive shaft 14 to the gear 13 on the movable eccentric weight 12 on the driven shaft 15. On the other hand, the rotational force transmitted to the drive shaft 14 is also transmitted to the movable eccentric weight 12 on the drive shaft 14 via the amplitude variable device 17 and driven from the gear 13 of the movable eccentric weight 12 on the drive shaft 14. It is transmitted to the gear 13 on the shaft 15 and transmitted to the fixed eccentric weight 11 on the driven shaft 15. The gear 13 also plays a role of transmitting the phase difference change by the amplitude variable unit 17 to all the movable eccentric weights 12.

  The other end of the drive shaft 14 of the first vibro hammer 21 and the other end of the driven shaft 15 of the second vibro hammer 22 protrude from the case and are connected to the interlocking device 6.

  FIG. 2A is an enlarged plan view of the interlocking device 6 shown in FIG. 1 (the one shown in FIG. 1 is rotated 90 degrees counterclockwise), and FIG. FIG. 2 is a schematic diagram as viewed in the direction of arrow A in FIG. In FIG. 2B, the rotation direction of each shaft and each belt is indicated by a black arrow.

  The main part of the interlocking device 6 includes a first toothed belt part 61, a second toothed belt part 62, and an interlocking gear part 65 between them. The first toothed belt portion 61 is interlocked with the drive shaft 14 of the first vibrator hammer 21 of FIG. The second toothed belt portion 62 is interlocked with the driven shaft 15 of the second vibrator hammer 22 of FIG. By combining the toothed belt and the toothed pulley, the rotational force can be transmitted efficiently without slipping, and the distance between the toothed pulleys can be set freely. Thereby, it becomes possible to cope with various calibers of the pile.

  The first toothed belt portion 61 includes a pair of toothed pulleys 61A and 61B and a first toothed belt 61C spanned between them. A pulley shaft 61D of one toothed pulley 61A located at one end of the interlocking device 6 is connected to an extended portion of the drive shaft 14 of the first vibrator hammer 21 in FIG. Therefore, the toothed pulley 61 </ b> A rotates integrally with the drive shaft 14 of the first vibro hammer 21.

  The second toothed belt portion 62 includes a pair of toothed pulleys 62A and 62B and a second toothed belt 62C spanned between them. A pulley shaft 62D of one toothed pulley 62A located at the other end of the interlocking device 6 is connected to an extended portion of the driven shaft 15 of the second vibrator hammer 22 in FIG. Accordingly, the toothed pulley 62 </ b> A rotates integrally with the driven shaft 15 of the second vibro hammer 22.

  The interlocking gear portion 65 includes two gears 65A and 65B that are provided between the first toothed belt portion 61 and the second toothed belt portion 62 and mesh with each other. These gears 65A and 65B are housed in an appropriate case 66 and are pivotally supported by bearings provided on the case wall. One gear 65A is coaxial with the pulley shaft 61E of the other toothed pulley 61B of the first toothed belt portion 61 and rotates integrally therewith. The other gear 65B is coaxial with the pulley shaft 62E of the other toothed pulley 62B of the second toothed belt portion 62 and rotates integrally therewith. A rotational force is transmitted between the first toothed belt part 61 and the second toothed belt part 62 by the interlocking gear part 65.

  The tension pulley 61F attached to the tip of the support portion 61G extending from one end in the longitudinal direction of the case 66 presses the first toothed belt 61C so as not to loosen. Similarly, the tension pulley 62F attached to the tip of the support portion 62G extending from the other end in the longitudinal direction of the case 66 presses the second toothed belt 62C so as not to loosen.

(2) Embodiment of interlocking device in six biaxial vibratory hammers FIG. 3 is a plan view schematically showing a state in which six biaxial hammers are connected using the interlocking device 6 shown in FIG. . The driven shaft 15 of the fifth vibrator hammer 25 is connected to one side of the pulley shaft 61E of the other toothed pulley 61B of the first toothed belt portion 61 via a third interlocking tool 53. Further, the drive shaft 14 of the sixth vibrator hammer 26 is connected to the other side of the pulley shaft 61E via a fourth interlocking tool 54.

  The fifth vibro hammer 25 and the sixth vibro hammer 26 are disposed at both ends of a substantially diameter of the pile 200 so as to be orthogonal to the longitudinal direction of the interlocking device 6. In this way, since the two pairs of vibro hammers 21 and 22 and 25 and 26 connected to each other are disposed at the ends of the two substantially perpendicular diameters in the pile 200, a balanced and stable interlocking can be realized. The six biaxial vibrator hammers 21 to 26 and the interlocking device 6 are arranged so that all the rotation axes are parallel to each other. With such arrangement and connection, the six biaxial vibrator hammers 21 to 26 can be interlocked.

(3) Embodiment of interlocking device in four four-axis vibratory hammers FIGS. 4A and 4B show a state in which four four-axis vibratory hammers are connected using another embodiment of the interlocking device of a plurality of vibratory hammers according to the present invention. It is a top view which shows roughly. The interlocking device is denoted by reference numeral 7. Each four-axis vibro hammer is denoted by reference numerals 41, 42, 43, 44. As described with reference to FIG. 9, the four-axis vibratory hammer is composed of an upper stage having a drive shaft and a driven shaft, and a lower stage having two driven shafts. For convenience of illustration, FIG. 4A shows an upper configuration and FIG. 4B shows a lower configuration, but the upper and lower stages of the four-axis vibrator hammer are linked via a gear.

  The four-axis vibro hammers directly connected by the interlocking device 7 are a first vibro hammer 41 and a second vibro hammer 42 arranged at both ends of the approximate diameter D of the pile 200 indicated by a two-dot broken line. The interlocking device 7 is disposed along the substantially diameter D direction of the pile 200. The third vibratory hammer 43 is connected to the first vibratory hammer 41 adjacent in the circumferential direction via interlocking tools (tire couplings or universal joints) 51 and 53 in each of the upper and lower stages. Similarly, the 4th vibro hammer 44 is connected with the 2nd vibro hammer 42 adjacent in the circumferential direction via the interlocking tools 52 and 54 in each of the upper stage and the lower stage. The four four-axis vibrator hammers 41 to 44 and the interlocking device 7 are arranged so that all the rotation axes are parallel to each other. With such arrangement and connection, the four four-axis vibro hammers 41 to 44 can be interlocked.

  As shown in FIGS. 4A and 4B, the upper and lower stages of the four-axis vibrator hammers 41 and 42 are connected by the upper and lower stages of the interlocking device 7, respectively. The interlocking device 7 has the same two-stage structure as the four-axis vibro hammer.

  Prior to the description of the interlocking device 7, the four-axis vibro hammers 41 to 44 will be described with reference to FIGS. 4A and 4B. Each of the four-axis vibro hammers 41 to 44 has a driving shaft 14 and a driven shaft 15 that are parallel to each other and are horizontally spaced apart from each other on the upper stage in the case 19, and are supported by bearings. In the lower stage, two parallel driven shafts 15 spaced apart in the horizontal direction are installed and supported by bearings.

  In the upper stage, a pair of fixed eccentric weight 11 and movable eccentric weight 12 are mounted on the drive shaft 14. The fixed eccentric weight 11 is fixed to the drive shaft 14 so as to rotate integrally with the drive shaft 14. The movable eccentric weight 12 is pivotally attached via a bearing so as to be rotatable with respect to the drive shaft 14. One end of the drive shaft 14 projects to the outside of the case 19, and a drive pulley 16 is attached to the external projecting portion, and the rotational force of a rotational drive means such as a motor (not shown) is transmitted via the drive pulley 16 to be rotationally driven. The The frequency of the drive shaft 14 is controlled by a motor or the like. Another pair of fixed eccentric weight 11 and movable eccentric weight 12 are similarly attached to the driven shaft 15. In this embodiment, an amplitude variable device 17 is attached to an external projecting portion at one end of the driven shaft 15.

  In the upper stage, the other end of the drive shaft 14 of the first vibro hammer 41 and the other end of the driven shaft 15 of the second vibro hammer 42 protrude to the outside of the case and are connected to the interlocking device 7.

  In the lower stage, a pair of fixed eccentric weight 11 and movable eccentric weight 12 are attached to each driven shaft 15. One end of one driven shaft 15 protrudes to the outside of the case 19, and an amplitude variable device 17 is attached to the external protruding portion.

  In the lower stage, the other end of one driven shaft 15 of the first vibro hammer 41 and the other end of the other driven shaft 15 of the second vibro hammer 42 protrude from the case and are connected to the interlocking device 7.

  In order to synchronously rotate all of the four pairs of fixed eccentric weights 11 and movable eccentric weights 12, a total of eight gears 13 of four upper stages and four lower stages are provided. The gear 13 also plays a role of transmitting the phase difference change by the amplitude variable unit 17 to all the movable eccentric weights 12.

  5A is an enlarged plan view of the interlocking device 7 shown in FIGS. 4A and 4B (the one shown in FIGS. 4A and 4B is shown rotated 90 degrees counterclockwise), and FIG. It is the B arrow schematic diagram of FIG. 4A and FIG. 4B. Although the interlocking device 7 has a two-stage structure of an upper stage and a lower stage, in the enlarged plan view of FIG. 5A, the lower stage overlaps with the upper stage and becomes invisible, so only the upper stage appears.

  As shown in FIG. 5A, the upper main part of the interlocking device 7 includes a first toothed belt portion 71, a second toothed belt portion 72, and an interlocking gear portion 75 therebetween. The first toothed belt portion 71 is linked to the upper drive shaft 14 of the first vibro hammer 41 in FIG. 4A. The second toothed belt portion 72 is interlocked with the upper driven shaft 15 of the second vibro hammer 42 in FIG. 4A. By combining the toothed belt and the toothed pulley, the rotational force can be transmitted efficiently without slipping, and the distance between the toothed pulleys can be set freely.

  The upper first toothed belt portion 71 appearing in FIG. 5A includes a pair of toothed pulleys 71A and 71B and a first toothed belt 71C bridged therebetween. A pulley shaft 71D of one toothed pulley 71A located at one end of the interlocking device 7 is connected to an extended portion of the upper drive shaft 14 of the first vibro hammer 41 in FIG. 4A. Accordingly, the toothed pulley 71 </ b> A rotates integrally with the upper drive shaft 14 of the first vibro hammer 41.

  The upper second toothed belt portion 72 appearing in FIG. 5A includes a pair of toothed pulleys 72A and 72B and a second toothed belt 72C bridged therebetween. A pulley shaft 72D of one toothed pulley 72A located at the other end of the interlocking device 7 is connected to an extension portion of one driven shaft 15 on the upper stage of the second vibrator hammer 42 in FIG. 4A. Accordingly, the toothed pulley 72 </ b> A rotates integrally with the one driven shaft 15 on the upper stage of the second vibro hammer 42.

  The upper interlocking gear portion 75 includes two gears 75A and 75B that are provided between the first toothed belt portion 71 and the second toothed belt portion 72 and mesh with each other. These gears 75A and 75B are housed in an appropriate case 79 and are pivotally supported by bearings provided on the case wall. One gear 75A is coaxial with the pulley shaft 71E of the other toothed pulley 71B of the first toothed belt portion 71 and rotates integrally therewith. The other gear 75B is coaxial with the pulley shaft 72E of the other toothed pulley 72B of the second toothed belt portion 72 and rotates integrally therewith. The interlocking gear portion 75 transmits the rotational force between the first toothed belt portion 71 and the second toothed belt portion 72.

  The tension pulley 71F attached to the tip of the support portion 71G extending from one end in the longitudinal direction of the case 79 presses the first toothed belt 71C so that it does not loosen. Similarly, the tension pulley 72F attached to the tip of the support portion 72G extending from the other end in the longitudinal direction of the case 79 presses the second toothed belt 72C so as not to loosen.

  The schematic view taken in the direction of arrow B in FIG. The upper part is as described in FIG. 5A. The lower stage has the same configuration as the upper stage. In FIG. 5B, the rotation direction of each shaft and each belt is indicated by a black arrow.

  The lower main part of the interlocking device 7 includes a third toothed belt portion 73, a fourth toothed belt portion 74, and an interlocking gear portion 76 therebetween. The third toothed belt portion 73 is interlocked with one follower 15 at the lower stage of the first vibro hammer 41 in FIG. 4B. The fourth toothed belt portion 74 is interlocked with one driven shaft 15 at the lower stage of the second vibro hammer 42 in FIG. 4B.

  The lower third toothed belt portion 73 in FIG. 5B includes a pair of toothed pulleys 73A and 73B and a third toothed belt 73C bridged between them. A pulley shaft 73D of one toothed pulley 73A located at one end of the interlocking device 7 is connected to an extension portion of one driven shaft 15 in the lower stage of the first vibro hammer 41 in FIG. 4B. Accordingly, the toothed pulley 73 </ b> A rotates integrally with the one driven shaft 15 at the lower stage of the first vibro hammer 41.

  The lower fourth toothed belt portion 74 in FIG. 5B includes a pair of toothed pulleys 74A and 74B and a fourth toothed belt 74C bridged between them. A pulley shaft 74D of one toothed pulley 74A located at the other end of the interlocking device 7 is connected to an extension portion of one driven shaft 15 at the lower stage of the second vibro hammer 42 in FIG. 4B. Accordingly, the toothed pulley 74 </ b> A rotates integrally with the one driven shaft 15 at the lower stage of the second vibro hammer 42.

  The lower interlocking gear portion 76 includes two gears 76A and 76B that are provided between the third toothed belt portion 73 and the fourth toothed belt portion 74 and mesh with each other. These gears 76A and 76B are accommodated in a case 79 shown in FIG. 5A, and are pivotally supported by bearings provided on the case wall. One gear 76A is coaxial with the pulley shaft 73E of the other toothed pulley 73B of the third toothed belt 73 and rotates integrally therewith. The other gear 76B is coaxial with the pulley shaft 74E of the other toothed pulley 74B of the fourth toothed belt portion 74 and rotates integrally therewith. A rotational force is transmitted between the third toothed belt portion 73 and the fourth toothed belt portion 74 by the interlocking gear portion 76.

  Each of the gears 75A and 75B of the upper interlocking gear portion 75 is not meshed with each of the gears 76A and 76B of the lower interlocking gear portion 76 located immediately below. This is because it is preferable not to mesh the upper and lower gears in the interlocking device 7 because the vibratory hammer of this embodiment includes the amplitude variable device 17 in each stage.

  When the interlocking device 7 is applied to a vibratory hammer that does not include an amplitude variable device, the gear of the upper interlocking gear portion 75 and the gear of the lower interlocking gear portion 76 may be engaged with each other.

(4) Example of interlocking device in six four-axis vibratory hammers FIGS. 6A and 6B are schematic views showing a state in which six four-axis vibratory hammers are connected using the interlocking device 7 shown in FIGS. 5A and 5B. FIG. 6A, on the one side of the pulley shaft 71E of the other toothed pulley 71B of the first toothed belt portion 71, the upper driven shaft 15 of the upper stage of the fifth vibro hammer 45 via the fifth interlocking tool 55 is provided. Are connected. Furthermore, the drive shaft 14 of the sixth vibrator hammer 46 is connected to the other side of the pulley shaft 71E via a sixth interlocking tool 56. In the lower stage shown in FIG. 6B, the lower one of the fifth vibro hammer 45 is connected to one side of the pulley shaft 73E of the other toothed pulley 73B of the third toothed belt portion 73 via the seventh interlocking tool 57. Two driven shafts 15 are connected. Furthermore, one driven shaft 15 at the lower stage of the sixth vibro hammer 46 is connected to the other side of the pulley shaft 73E via an eighth interlocking tool 58.

  The fifth vibro hammer 45 and the sixth vibro hammer 46 are disposed at both ends of the pile 200 having a substantially diameter so as to be orthogonal to the longitudinal direction of the interlocking device 7. In this manner, since the two pairs of vibro hammers 41 and 42 and 45 and 46 connected to each other are arranged at the ends of the two orthogonal diameters in the pile 200, a well-balanced and stable interlock can be realized. The six biaxial vibrators 41 to 46 and the interlocking device 7 are arranged so that all the rotation axes are parallel to each other. With such arrangement and connection, the six four-axis vibrator hammers 41 to 46 can be interlocked.

(5) Example of interlocking device of multi-axis vibratory hammer Although not shown, a multi-axis vibratory hammer having a configuration of four or more axes or three or more stages is also in the same form as the example of the above-described four-axis vibratory hammer, It can be connected by the interlocking device of the present invention. Such a multi-axis vibro hammer has a multi-stage structure, and has one drive shaft and a plurality of driven shafts. In that case, the interlocking device that connects two multi-axis vibratory hammers arranged at both ends of the approximate diameter of the pile has a multi-stage structure consisting of the same number of stages as the multi-axis vibratory hammer, and each interlocking device has two stages. Each stage of the multi-axis vibro hammer is connected.

  In general, when the interlocking device of the present invention is applied to a vibratory hammer having a multi-stage structure having an amplitude variable device at each stage, the gears of the upper and lower adjacent stages in the interlocking device are not meshed. On the other hand, when the interlocking device of the present invention is applied to a vibratory hammer having a multi-stage structure that does not include an amplitude variable device, gears in adjacent stages above and below the interlocking device may be meshed.

(6) Other Embodiments of Interlocking Device FIG. 7 schematically shows still another embodiment of the interlocking device of the present invention, and shows the main part of the interlocking device in the same manner as FIGS. 2 (b) and 5B. It is a side view. FIG. 7A shows an interlocking device 8 for connecting a one-stage vibro hammer such as a biaxial vibro hammer. FIG. 7B shows a two-stage vibro hammer such as a four-axis vibro hammer. This is an interlocking device 9. In the figure, the rotation direction of each axis is indicated by a black arrow.

  In the interlocking devices 8 and 9 in FIG. 7, the rotational force is transmitted only by gears instead of the pulleys and belts in the above-described embodiment.

  In the interlocking device 8 of FIG. 7A, the first gear portion 81 includes three gears 81A, 81B, 81C arranged in series, and the shaft 81D of the gear 81A is coaxial with the shaft of one biaxial vibrator hammer. Connected located above. The second gear portion 82 also includes three gears 82A, 82B, and 82C arranged in series, and the shaft 82D of the gear 82A is coaxially located and connected to the shaft of the other biaxial vibrator hammer. The gear 81C of the first gear portion 81 and the gear 82C of the second gear portion 82 are engaged with each other and transmit rotational force.

  In the interlocking device 9 of FIG. 7B, the upper first gear portion 91 includes three gears 91A, 91B, 91C arranged in series, and the shaft 91D of the gear 91A is the upper stage of one four-axis vibrator hammer. It is located on the same axis as the shaft. The upper second gear portion 92 also has three gears 92A, 92B, and 92C arranged in series, and the shaft 92D of the gear 92A is coaxially connected to the upper shaft of the other four-axis vibrator hammer. Is done. An upper interlocking gear portion 95 provided between the first gear portion 91 and the second gear portion 92 and including two gears 95A and 95B transmits a rotational force therebetween. Similarly, the third gear portion 93, the fourth gear portion 94, and the interlocking gear portion 96 are also provided in the lower stage. In the illustrated example (when the vibro hammer is equipped with an amplitude variable device), the gears of the interlocking gear portions 95 and 96 are not meshed in the vertical direction, but in another example (when the vibro hammer is not equipped with an amplitude variable device). May be.

  In the embodiment of FIG. 7, the number of gears arranged in series is set so that the rotation direction of each gear located at both ends coincides with the rotation direction of the shaft of each vibro hammer to be connected. The number and diameter of the gears are set according to the distance between the two vibratory hammers to be connected. In addition, when only a gear is used, the tolerance with respect to the change of the distance between two vibratory hammers becomes small compared with the case where the pulley and belt of the above-mentioned embodiment are used.

(7) Pile or wall placing method Cylindrical piles or walls having a medium diameter can be placed by 4 or 6 vibro hammers that are interlocked using the interlocking device of the present invention. it can. Similarly, drawing is possible. A general-purpose size and performance can be applied as each vibrator hammer.

2, 21, 22, 23, 24, 25, 26: Biaxial vibro hammer 4, 41, 42, 43, 44, 45, 46: Four axial vibro hammer 5, 51, 52, 53, 54, 55, 56, 57, 58: interlocking device 6, 7, 8, 9: interlocking device 61A, 62A, 71A, 72A, 73A, 74A: toothed pulley 61B, 62B, 71B, 72B, 73B, 74B: toothed pulley 61C, 71C, 73C: First toothed belts 62C, 72C, 74C: Second toothed belts 61D, 62D, 71D, 72D, 73D, 74D: Pulley shafts 61E, 62E, 71E, 72E, 73E, 74E: Pulley shafts 65A, 65B, 75A, 75B, 76A, 76B: interlocking gears 61F, 62F, 71F, 72F, 73F, 74F: tension pulleys 61G, 62G, 71G, 72 : Support part 66, 79 interlocking device case 11: fixed eccentric weight 12: movable eccentric weight 13: gear 14: drive shaft 15: driven shaft 16: drive pulley 17: amplitude variable device 19: case 100: driving device 110 : Base member 111: Gripping device 200: Pile

Claims (5)

The first vibratory hammer (21) and the second vibratory hammer (22) which are spaced apart from each other at both ends of the substantially diameter of the cylindrical pile, and the first vibratory hammer (21) via the first interlocking tool (51). At least four biaxial hammers comprising a third vibratory hammer (23) connected to the second vibratory hammer (24) connected to the second vibratory hammer (22) via a second interlocking tool (52). (21, 22, 23, 24) interlocking device (6, which is arranged along the substantially diametrical direction of the pile and connects the first vibro hammer (21) and the second vibro hammer (22) to each other) ) And
(A) A pair of toothed pulleys (61A, 61B) and a first toothed belt (61C) bridged between them, and one toothed pulley (61A) is the first vibratory hammer (21) A first toothed belt portion (61) provided to rotate integrally with one of the shafts;
(B) another pair of toothed pulleys (62A, 62B) and a second toothed belt (62C) stretched between them, and one toothed pulley (62A) is connected to the second vibratory hammer ( 22) a second toothed belt portion (62) provided to rotate integrally with one shaft of (22);
(C) Rotation is transmitted between the other toothed pulley (61B) of the first toothed belt part (61) and the other toothed pulley (62B) of the second toothed belt part (62). And an interlocking gear portion (65) having a plurality of gears (65A, 65B), and a vibrated hammer interlocking device arranged apart from each other. The other toothed pulley (61B) of the first toothed belt portion (61) has a fifth vibrator hammer (25) on one side of the pulley shaft (61E) via a third interlocking tool (53). A sixth vibro hammer (26) can be connected to the other side via a fourth interlocking tool (54).
The interlocking apparatus of the spaced apart vibro hammer according to claim 1. The first vibratory hammer (41) and the second vibratory hammer (42) disposed at both ends of the substantially diameter of the cylindrical pile and the first vibratory hammer (41) via the first interlocking tool (51). At least four multi-axis vibro hammers comprising a third vibro hammer (43) coupled to the second vibro hammer (42) via a second interlocking tool (52). (41, 42, 43, 44), an interlocking device that is arranged along a substantially diametrical direction of the pile and connects the first vibro hammer (41) and the second vibro hammer (42) to each other ( 7)
(A) Each of the multi-axis vibro hammers (41, 42, 43, 44) has a multi-stage structure of at least two stages in the vertical direction, and one or more shafts are provided in each stage, and the interlocking The device (7) has a multi-stage structure composed of the same number of stages as the multi-axis vibro hammer,
In each stage of the interlocking device (7),
(B) A pair of toothed pulleys (71A, 71B) and a first toothed belt (71C) bridged between them, and one toothed pulley (71A) is the first vibrator hammer (41) A first toothed belt portion (71) provided to rotate integrally with one of the shafts;
(C) Another pair of toothed pulleys (72A, 72B) and a second toothed belt (72C) bridged between them, and one toothed pulley (72A) is connected to the second vibrator hammer ( 42) a second toothed belt portion (72) provided to rotate integrally with one shaft of (42);
(D) Rotation is transmitted between the other toothed pulley (71B) of the first toothed belt portion (71) and the other toothed pulley (72B) of the second toothed belt portion (72). And an interlocking gear portion (75) having a plurality of gears (75A, 75B), and a interlocking device for vibro hammers arranged apart from each other. In each stage of the interlocking device,
The other toothed pulley (61B) of the first toothed belt portion (61) has a fifth vibrator hammer (45) on one side of its pulley shaft (71E) via a third interlocking tool (53). A sixth vibro hammer (46) can be connected to the other side via a fourth interlocking tool (54).
The interlocking device of the vibro hammers arranged apart according to claim 3.   Pile or wall body placement using a plurality of vibratory hammers interlocked by the interlocking device of vibro hammers spaced apart according to any one of claims 1 to 4 Method.

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