JP5910085B2 - Excitation device - Google Patents

Description

  The present invention relates to a vibration device that vibrates a body to be vibrated in a forward / reverse direction (vibration direction).

  In recent years, various developments have been made on vibration generators. A general vibration apparatus will be briefly described as follows.

  A general vibration device includes a table base, and a slide table equipped with a vibration body is provided on the table base so as to be reciprocally movable in the forward and reverse directions (vibration direction). This slide table includes a connecting rod on one side. In addition, a hydraulic cylinder as a vibration actuator is provided on one side of the slider, and this hydraulic cylinder includes a piston rod as an operating rod that can reciprocate in the forward and reverse directions. A general vibration exciter is provided with a shaft coupling (coupling) that connects the tip of the connecting rod and the tip of the piston rod, and this shaft joint is integrated with the tip of the connecting rod. And a cylinder side joint member (actuator side joint member) that is integrally provided at the tip of the piston rod and that can be fastened to the table side joint member.

  Therefore, by reciprocating the piston rod in the forward / reverse direction by driving the hydraulic cylinder, the slide table is reciprocated in the forward / reverse direction via the shaft coupling. Thereby, a to-be-excited body can be vibrated to the normal / reverse direction.

  In addition, there exist some which are shown to patent document 1-patent document 3 as a prior art relevant to this invention.

JP 2000-118725 A JP 11-311583 A JP 2002-153975 A

  By the way, the assembly error of the shaft coupling causes an angular deviation between the axis of the piston rod and the axis of the connecting rod, and the axis of the piston rod is inclined relative to the axis of the connecting rod. There is. In such a case, when the vibration frequency of the vibration device becomes high, the shaft coupling is likely to be loose during operation of the vibration device, and the vibrating body can be vibrated in the forward and reverse directions in a stable state. There is a problem that it is difficult.

  Therefore, an object of the present invention is to provide a vibration apparatus having a novel configuration that can solve the above-described problems.

According to a first aspect of the present invention, in a vibration exciter that vibrates a body to be excited in a forward / reverse direction (excitation direction), a table base and a reciprocating movement in the forward / reverse direction are provided on the table base. A slide table provided on one side with a connecting rod parallel to the forward / reverse direction and equipped with the vibrating body (including holding), and provided on the table base, reciprocating the slide table in the forward / reverse direction A guide mechanism for movably guiding; and an operating rod which is provided on one side of the slide table and which is parallel to the forward / reverse direction and is capable of reciprocating in the forward / reverse direction. A vibration actuator that reciprocates in a direction, and a shaft coupling (coupling) that connects a tip portion of the connecting rod and a tip portion of the actuating rod, wherein the shaft joint is a tip of the connecting rod. Integrally with provided fastenable actuator side joint member on said table side joint member by a plurality of bolts and a plurality of nuts on the tip end of the table-side joint member integrally provided with the actuating rod, the A plurality of through holes, which are disposed between the fastening surface of the table side joint member and the fastening surface of the actuator side joint member, and are capable of loosely fitting the bolts are formed at intervals in the circumferential direction, and are recessed on one side. A concave spherical washer having a spherical surface and a fastening surface of the actuator side joint member or a fastening surface of the table side joint member and the concave spherical surface of the concave spherical washer, and the bolt can be loosely fitted. A convex spherical washer having a plurality of through holes formed at intervals in the circumferential direction and having a convex spherical surface (sliding convex spherical surface) capable of sliding on the concave spherical surface of the concave spherical washer on one side ; der it was Ru.

According to the first aspect of the present invention, the slide table is reciprocated in the forward / reverse direction via the shaft joint by reciprocating the operating rod in the forward / reverse direction by driving the excitation actuator. . Thereby, the said to-be-excited body can be vibrated to the said normal / reverse direction.

  In addition to the above-described operation, when the actuator side joint member is fastened to the table side joint member when the shaft joint is assembled, the concave spherical surface of the concave spherical washer and the convex spherical surface of the convex spherical washer become compatible. Slide relatively. As a result, even if there is an angular deviation between the axial center of the operating rod and the axial center of the connecting rod due to the assembly error of the shaft coupling, the angular deviation can be absorbed.

  In the description of the specification and the claims of the present application, “provided integrally” means including the integral provision.

According to a second aspect of the present invention, in a vibration exciter that vibrates a vibrating body in a forward / reverse direction (vibration direction), the table base and the table base are provided so as to be reciprocally movable in the forward / reverse direction. A slide table provided coaxially with connecting rods parallel to the forward / reverse direction on both sides, and equipped with the vibrating body (including holding), and provided on the table base, the slide table in the forward / reverse direction A guide mechanism that guides the slider back and forth , and an operating rod that is provided on both sides of the slide table and that is parallel to the forward / reverse direction and reciprocally movable in the forward / reverse direction. A vibration actuator that reciprocates in the direction, and a shaft coupling (coupling) that connects a tip end portion of each connecting rod and a corresponding tip end portion of the actuating rod. And table-side joint member provided integrally on the tip of the rod, the integrally provided on the distal end of the rod, fastenable actuator side joint on the table side joint member by a plurality of bolts and a plurality of nuts A plurality of through-holes that are disposed between the member, the fastening surface of the table-side joint member, and the fastening surface of the actuator-side joint member, and capable of loosely fitting the bolt, are formed at intervals in the circumferential direction. a concave spherical surface washer having a concave spherical surface on one side, is disposed between the fastening surface and the concave spherical surface of the concave spherical washer of the fastening surface or the table-side joint member of the actuator-side coupling member, the bolt A convex spherical washer having a plurality of through-holes that can be loosely fitted at intervals in the circumferential direction and having a convex spherical surface (sliding convex spherical surface) that can slide on the concave spherical surface of the concave spherical washer on one side. And equipped with Ru der it.

According to the second aspect of the present invention, the slide table is moved via the shaft joint by reciprocally moving the pair of operating rods in the forward and reverse directions by driving the pair of vibration actuators. Move back and forth in forward and reverse directions. Thereby, the said to-be-excited body can be vibrated to the said normal / reverse direction.

  In addition to the above-described operation, when assembling each shaft joint, when the table side joint member is fastened to the actuator side joint member, the concave spherical surface of the concave spherical washer and the convex spherical surface of the convex spherical washer become compatible. Slide relatively. As a result, even if there is an angular deviation between the axial center of the operating rod and the axial center of the connecting rod due to the assembly error of the shaft coupling, the angular deviation can be absorbed.

  According to the present invention, since it is possible to absorb the angular deviation between the shaft center of the operating rod and the shaft center of the connecting rod due to the assembly error of the shaft coupling, even if the vibration frequency of the vibration device becomes high, It is possible to suppress the occurrence of backlash in the shaft coupling during operation of the vibration exciter and to vibrate the vibrating body in the forward and reverse directions in a stable state.

FIG. 1 is a front sectional view of a vibration exciter according to a first embodiment of the present invention. FIG. 2 is a plan view of the vibration device according to the first embodiment of the present invention. FIG. 3 is an enlarged view of the arrow III in FIG. FIG. 4 is an enlarged cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a front sectional view of a vibration exciter according to the second embodiment of the present invention. FIG. 6 is a plan view of the vibration exciter according to the second embodiment of the present invention. FIG. 7A is an enlarged view of the arrow portion VIIA in FIG. 5, and FIG. 7B is an enlarged view of the arrow portion VIIB in FIG.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. In the figure, “L” indicates the left direction, and “R” indicates the right direction.

  As shown in FIG.1 and FIG.2, the vibration apparatus 1 which concerns on 1st Embodiment of this invention is the left-right direction in the forward / reverse direction (excitation direction, 1st Embodiment). ). The vibration device 1 includes a support frame (device frame) 3 extending in the left-right direction. The support frame 3 is provided with a table base 5. The table base 5 has a cross section. An inverted T-shaped guide groove 7 is formed.

  The guide groove 7 of the table base 5 is provided with a slide table 9 equipped with the vibrating body E (including holding) so as to be reciprocally movable in the forward and reverse directions. The slide table 9 includes a slide 11 provided in the guide groove 7 of the table base 5 so as to be reciprocally movable in the forward and reverse directions, and a table 15 provided integrally with the slide 11 and equipped with the vibrating body W. And a connecting rod 17 provided integrally on one side (left side) of the slide 11 and extending in parallel in the forward and reverse directions.

As shown in FIGS. 1 and 4, the slide table 9 is guided on the inner surface of the guide groove 7 of the table base 5 so that the slide table 9 can reciprocate in the forward and reverse directions using the static pressure of the support oil (an example of the support fluid). A supporting static pressure guide unit 19 is provided. In other words, the slide table 9 is provided in the guide groove 7 of the table base 5 so as to be reciprocally movable in the forward and reverse directions via the static pressure guide unit 19. The static pressure guide unit 19 includes a plurality of static pressure pads 21 that are provided at intervals on the inner surface of the guide groove 7 of the table base 5 and that can eject support oil. The plurality of static pressure pads 21 are connected to a support oil pump (not shown) as a support oil supply source for supplying support oil. Instead of providing the static pressure guide unit 19 on the inner surface of the guide groove 7 of the table base 5, another guide mechanism for guiding and supporting the slide table 9 so as to be able to reciprocate in the forward and reverse directions may be provided. Absent.

  As shown in FIGS. 1 and 2, on one side (left side) of the slide table 9 in the support frame 3, a return hydraulic cylinder 23 is provided as a vibration actuator that moves the slide table 9 in the forward and reverse directions. It is arranged. The specific configuration of the hydraulic cylinder 23 is as follows.

  A cylindrical cylinder body 25 constituting a part of the hydraulic cylinder 23 is provided on one side of the slide table 9 in the support frame 3. Further, a cylindrical end member 27 is integrally provided in a liquid-tight manner at an end portion (right end portion) of the cylinder body 25 on the slide table 9 side via a packing 29. Another end member 31 having a cylindrical shape is integrally provided in a liquid-tight manner through a packing 33 at an end portion (left end portion) on the opposite side.

  A piston 35 is provided in the cylinder body 25 so as to be capable of reciprocating in a fluid-tight manner in the forward and backward direction. An operating rod parallel to the forward and backward direction is provided on the side surface (right side surface) of the piston 35 on the slide table 9 side. The piston rod 39 is integrally provided. The piston rod 39 is inserted into the end member 27 through a packing 41 in a liquid-tight manner, and is supported by the end member 27 through a metal bearing 43 so as to be reciprocally movable in the forward and reverse directions. Further, an auxiliary rod 45 parallel to the forward / reverse direction is integrally provided on the side surface (left side surface) of the piston 35 opposite to the slide table 9, and this auxiliary rod 45 is provided on the end member 31 with a packing 47. And is supported by the end member 31 through a metal bearing 49 so as to be reciprocally movable in the forward and reverse directions.

  Between the piston 35 and the end member 31 in the cylinder body 25, when the slide table 9 moves in the forward direction (one side in the excitation direction, rightward in the first embodiment of the present invention) A forward hydraulic chamber 51 for supplying hydraulic oil (an example of a hydraulic fluid) during operation is partitioned. Further, when the slide table 9 is moved in the reverse direction (the other side in the excitation direction, leftward in the first embodiment of the present invention) between the piston 35 and the end member 27 in the cylinder body 25. A backward hydraulic chamber 53 for supplying hydraulic oil at the time of backward movement is partitioned. The forward hydraulic chamber 51 and the backward hydraulic chamber 53 are connected to a hydraulic oil pump (not shown) as a hydraulic oil supply source for supplying hydraulic oil via a servo valve (not shown).

  As shown in FIG. 3, the vibration exciter 1 includes a shaft coupling (coupling) 53 that connects the distal end portion of the connecting rod 17 and the distal end portion of the piston rod 39. The basic configuration is as follows.

  A table side joint member 55 is screwed to the distal end portion of the connecting rod 17, and the table side joint member 55 is attached to the distal end portion of the connecting rod 17 by an appropriate rotation pin (not shown). On the other hand, it is impossible to rotate. In other words, the table side joint member 55 is integrally provided at the distal end portion of the connecting rod 17.

  A cylinder side joint member 57 as an actuator side joint member is screwed to the tip of the piston rod 39, and the cylinder side joint member 57 is connected to the piston rod 39 by an appropriate rotation stop pin (not shown). It is impossible to rotate with respect to the tip of the. In other words, the cylinder side joint member 57 is integrally provided at the tip of the piston rod 39. The cylinder side joint member 57 can be fastened to the table side joint member 55 by a headless bolt 59, nuts 61, 63, and the like. Instead of using the headless bolt 59 for fastening the cylinder side joint member 59 and the table side joint member 55, a headed bolt (not shown) may be used.

  A concave spherical washer 65 is disposed between the fastening surface of the table side joint member 55 and the fastening surface of the cylinder side joint member 57, and the concave spherical washer 65 has a concave spherical surface 65f on one side. is there. Further, the concave spherical washer 65 is formed with a plurality of through holes 67 into which the headless bolts 59 can be loosely fitted at intervals in the circumferential direction. The concave spherical washer 65 is formed when the shaft coupling 53 is assembled. The table side joint member 55 is slightly movable in a direction parallel to the fastening surface (in other words, a direction orthogonal to the forward and reverse directions).

  A convex spherical washer 69 is disposed between the fastening surface of the cylinder side joint member 57 and the concave spherical surface 65f of the concave spherical washer 65. The convex spherical washer 69 is provided on one side of the concave spherical washer 65. It has a convex spherical surface 69f that can slidably contact (slidably contact) the spherical surface 65f. Further, the convex spherical washer 69 is formed with a plurality of through holes 71 into which the headless bolts 59 can be loosely fitted at intervals in the circumferential direction. The convex spherical washer 69 is provided when the shaft coupling 53 is assembled. The cylinder side joint member 57 is slightly movable in a direction parallel to the fastening surface (in other words, a direction orthogonal to the forward and reverse directions). Instead of the convex spherical washer 69 being disposed between the fastening surface of the cylinder side joint member 57 and the concave spherical surface 65f of the concave spherical washer 65, the direction of the concave spherical washer 65 is reversed and the table side joint member is arranged. It may be arranged between the fastening surface 55 and the concave spherical surface 65f of the concave spherical washer 65.

  Then, the effect | action and effect of 1st Embodiment of this invention are demonstrated.

  By discharging the hydraulic oil from the backward hydraulic chamber 53 and supplying the hydraulic oil to the forward hydraulic chamber 51, the piston rod 39 is moved in the positive direction integrally with the piston 35 by the pressure of the hydraulic oil. The slide table 9 is moved in the forward direction via the joint 53. In addition, by discharging the hydraulic oil from the forward hydraulic chamber 51 and supplying the hydraulic oil to the backward hydraulic chamber 53, the piston rod 39 is moved in the reverse direction integrally with the piston 35 by the pressure of the hydraulic oil. Then, the slide table 9 is moved in the reverse direction via the shaft coupling 53. The slide table 9 can be reciprocated in the forward / reverse direction via the shaft coupling 53 by alternately repeating the forward movement and the reverse movement of the piston rod 39. Thereby, the to-be-excited body E can be vibrated to the normal / reverse direction (effect | action regarding the driving | operation of the vibration apparatus 1).

  In addition to the operation related to the operation of the vibration exciter 1, when the table joint member 55 is fastened to the cylinder joint member 57 when the shaft joint 53 is assembled, the concave spherical surface 65f of the concave spherical washer 65 and the convex spherical washer 69 It slides relatively so that the convex spherical surface 69f fits. Thereby, even if there is an angle shift between the axis of the piston rod 39 and the axis of the connecting rod 17 due to an assembly error of the shaft coupling 53, the angle shift can be absorbed.

  In particular, by adjusting the rigidity of the connecting rod 17 in the direction orthogonal to the normal / reverse direction by elongating the connecting rod 17 or the like, the elastic deformation in the direction orthogonal to the normal / reverse direction of the connecting rod 17 is allowed, and the shaft It is possible to sufficiently absorb the angular deviation between the axis of the piston rod 39 and the axis of the connecting rod 17 due to the assembling error of the joint 53 (operation related to the assembling of the shaft joint 53).

  Therefore, according to the first embodiment of the present invention, as described above, the angular deviation between the axis of the piston rod 39 and the axis of the connecting rod 17 due to the assembly error of the shaft coupling 53 can be absorbed. Even when the excitation frequency of the apparatus 1 is increased, it is possible to sufficiently prevent the shaft coupling 53 from being loose during operation of the excitation apparatus 1 and to apply the vibration body E in the forward and reverse directions in a stable state. Can be shaken.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. 5 to 7A and 7B. In the figure, “L” indicates the left direction, and “R” indicates the right direction.

  As shown in FIGS. 5 and 6, the vibrating device 73 according to the second embodiment of the present invention moves the vibrating body E in the forward / reverse direction (vibrating direction, in the second embodiment, the left-right direction). ), And has the same configuration as that of the vibration device 1 (see FIGS. 1 and 2) according to the first embodiment of the present invention. Hereinafter, only parts of the configuration of the vibration device 73 that are different from the configuration of the vibration device 1 will be briefly described. In addition, about the component corresponding to the component in the vibration apparatus 1 among several components in the vibration device 73, the same number is attached | subjected in drawing.

  That is, instead of the connecting rod 17 (see FIGS. 1 and 2) being integrally provided on one side (left side) of the slide 11, the connecting rod extending in parallel in the forward and reverse directions on both sides (left and right sides) of the slide 11. 75 and 77 are integrally provided.

  Instead of the return type hydraulic cylinder 23 (see FIGS. 1 and 2) disposed on one side (left side) of the support frame 3, the slide tables 9 are provided on both sides of the slide table 9 in the support frame 3. Reciprocating hydraulic cylinders 79 and 81 are provided as vibration actuators that reciprocate in the forward and reverse directions, respectively. Here, the configuration of the hydraulic cylinder 79 is substantially the same as the configuration of the hydraulic cylinder 23. In addition, the hydraulic cylinder 81 is configured such that a forward hydraulic chamber 51 is defined between the piston 35 and the end member 27 in the cylinder body 25, and is restored between the piston 35 and the end member 31 in the cylinder body 25. The configuration is substantially the same as that of the hydraulic cylinder 23 except that the dynamic hydraulic chamber 53 is partitioned.

  As shown in FIGS. 7 (a) and 7 (b), the vibration device 73 replaces the shaft coupling 53 (see FIGS. 1 and 2) that connects the distal end portion of the connecting rod 17 and the distal end portion of the piston rod 39. A shaft coupling 83 that connects the tip of the connecting rod 73 and the tip of the piston rod 39 and a shaft joint 85 that connects the tip of the connecting rod 75 and the tip of the piston rod 39 are provided. Here, the configuration of each shaft coupling 83 (85) is substantially the same as the configuration of the shaft coupling 53.

  And also in 2nd Embodiment of this invention, there exists an effect | action and effect similar to the effect | action and effect of 1st Embodiment of this invention.

  The present invention is not limited to the description of the above-described embodiment. For example, instead of the hydraulic cylinder 23 (79, 81), another vibration actuator such as a hydraulic cylinder or a pneumatic cylinder is used. Various modifications can be made by making appropriate changes. Further, the scope of rights encompassed by the present invention is not limited to these embodiments.

E Excited body 1 Exciting device 3 Support frame 5 Table base 7 Guide groove 9 Slide table 11 Slide 15 Table 17 Connecting rod 19 Static pressure guide unit 21 Static pressure pad 23 Hydraulic cylinder 39 Piston rod 51 Forward hydraulic chamber 53 Dynamic hydraulic chamber 53 Shaft joint 55 Table side joint member 57 Cylinder side joint member 59 Headless bolt 61 Nut 63 Nut 65 Concave spherical washer 65f Concave spherical washer concave spherical surface 69 Convex spherical washer 69f Convex spherical washer convex spherical surface 73 Excitation device 75 Connecting rod 77 Connecting rod 79 Hydraulic cylinder 81 Hydraulic cylinder 83 Shaft coupling 85 Shaft coupling

Claims (3)

In a vibration device that vibrates a vibrating body in forward and reverse directions,
Table base,
A slide table that is provided on the table base so as to be reciprocally movable in the forward and reverse directions, includes a connecting rod parallel to the forward and reverse directions on one side, and is equipped with the vibrating body;
A guide mechanism provided on the table base for guiding the slide table so as to be reciprocally movable in the forward and reverse directions;
An excitation actuator provided on one side of the slide table, provided with an operating rod that is parallel to the forward / reverse direction and is capable of reciprocating in the forward / reverse direction, and for reciprocating the slider in the forward / reverse direction; ,
A shaft coupling that connects the distal end of the connecting rod and the distal end of the actuating rod;
The shaft coupling is
A table side joint member integrally provided at the tip of the connecting rod;
An actuator-side joint member that is integrally provided at the tip of the operating rod, and that can be fastened to the table-side joint member by a plurality of bolts and a plurality of nuts ;
A plurality of through holes, which are disposed between the fastening surface of the table side joint member and the fastening surface of the actuator side joint member, and can be loosely fitted with the bolts are formed at intervals in the circumferential direction. A concave spherical washer having a concave spherical surface;
A plurality of through-holes, which are disposed between the fastening surface of the actuator-side joint member or the fastening surface of the table-side joint member and the concave spherical surface of the concave spherical washer, and are capable of loosely fitting the bolts in the circumferential direction. And a convex spherical washer having a convex spherical surface that is formed at an interval and has a convex spherical surface that can slide on the concave spherical surface of the concave spherical washer. In a vibration device that vibrates a vibrating body in forward and reverse directions,
Table base,
A slide table provided on the table base so as to be reciprocally movable in the forward / reverse direction, coaxially provided with connecting rods parallel to the forward / reverse direction on both sides, and equipped with the vibrating body;
A guide mechanism provided on the table base for guiding the slide table so as to be reciprocally movable in the forward and reverse directions;
An excitation actuator provided on both sides of the slide table, provided with an actuating rod that is parallel to the forward / reverse direction and reciprocally movable in the forward / reverse direction, and for reciprocating the slider in the forward / reverse direction;
A shaft coupling that connects the distal end of each connecting rod and the corresponding distal end of the actuating rod;
Each shaft coupling is
A table side joint member integrally provided at the tip of the connecting rod;
An actuator-side joint member that is integrally provided at the tip of the operating rod, and that can be fastened to the table-side joint member by a plurality of bolts and a plurality of nuts ;
A plurality of through holes, which are disposed between the fastening surface of the table side joint member and the fastening surface of the actuator side joint member, and can be loosely fitted with the bolts are formed at intervals in the circumferential direction. A concave spherical washer having a concave spherical surface;
A plurality of through-holes, which are disposed between the fastening surface of the actuator-side joint member or the fastening surface of the table-side joint member and the concave spherical surface of the concave spherical washer, and are capable of loosely fitting the bolts in the circumferential direction. And a convex spherical washer having a convex spherical surface that is formed at an interval and has a convex spherical surface that can slide on the concave spherical surface of the concave spherical washer. 3. The vibration device according to claim 1 , wherein the guide mechanism is a static pressure guide unit that guides the slide table so as to be reciprocally movable in the forward and reverse directions using the static pressure of a support fluid.

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