JP7186660B2 - Pumps and washers used for pumps - Google Patents

Description

The present invention relates to pumps and washers used in pumps.

The pump disclosed in Patent Literature 1 includes a lift pipe and a discharge pipe connected to the upper end of the lift pipe, and is attached to an installation floor via an attitude adjustment mechanism (attachment mechanism). The attitude adjustment mechanism includes a base plate fixed to the installation floor and an installation plate provided on the pumping pipe or the discharge pipe, and the spherical seats provided by these plates can adjust the attitude of the pump with respect to the installation floor. By screwing the fastening member into the fastening hole of the base plate through the loose fitting hole formed in the installation plate, the installation plate is immovably fastened to the base plate.

Japanese Patent No. 6479076

In the pump of Patent Literature 1, a washer larger than the loose fitting hole is arranged on the mounting plate, and the fastening member is arranged through the washer. If the position of the pump is adjusted vertically against the tilted installation floor, the axis of the installation plate will be tilted with respect to the axis of the base plate, so the axes of the fastening holes in the base plate and the loose fitting holes in the installation plate will be aligned. no longer do. Therefore, in the pump of Patent Document 1, particularly in the case of a large pump, the outer peripheral portion of the washer that moves together with the fastening member is positioned above the space of the loose fitting hole, and the fastening force of the fastening member is evenly applied to the mounting plate. There is a risk that it will not be

An object of the present invention is to enable a washer to be arranged at a fixed position on an installation plate in a pump whose posture relative to the installation floor can be adjusted.

A first aspect of the present invention comprises: a pumping pipe projecting downward from a mounting hole formed in an installation floor; a discharge pipe connected to the upper end of the pumping pipe and laid on the installation floor; A mounting mechanism for mounting the water lifting pipe and the discharge pipe is provided, the mounting mechanism being fixed on the installation floor so as to surround the mounting hole, and having a spherical concave portion and a spherical convex portion complementary to the spherical concave portion. and an annular base plate having a fastening hole opened in the upper surface of the first sliding contact portion; a second sliding contact portion formed by the other of the spherical convex portions; and a loosely fitting hole having a larger diameter than the diameter of the fastening hole. a mounting plate having the second sliding contact portion disposed on the sliding contact portion; a washer disposed on the mounting plate so as to block the upper end of the loose fitting hole; a fastening member screwed into the fastening hole to immovably fasten the installation plate to the base plate, the washer comprising a first member disposed on the installation plate; and a second member movably disposed on the member, the first member communicating with the loosely fitting hole and through which the fastening member extends, the fastening member extending in the direction in which the first member extends. The second member has a communication hole that allows relative movement, and the second member communicates with the communication hole and through which the fastening member is inserted, and the communication hole is opened by changing the posture of the second member with respect to the first member. The first member has a holding portion that rotatably holds the circular second member, and the outer circumference of the second member is provided with the holding A pump is provided in which a guide groove recessed in a radial direction is provided in a portion held by a part, and a guide pin that fits into the guide groove is disposed through the first member.

In this pump, the connection between the base plate and the installation plate by the fastening member is released, and the installation plate having the second sliding contact portion is moved with respect to the base plate having the first sliding contact portion. You can adjust the position of the tube. Further, the posture of the pump with respect to the installation floor is maintained by fastening the base plate and the installation plate with the fastening member.

The washer includes a first member having a communication hole that allows relative movement of the fastening member, and a second member that can change the position of the insertion hole with respect to the communication hole by changing the posture with respect to the first member. Therefore, by adjusting the posture of the first member with respect to the loose fitting hole and adjusting the posture of the second member with respect to the first member, the insertion hole is arranged on the axis of the fastening hole, and the fastening member is passed through the insertion hole and the communication hole. can be screwed into the fastening hole. As a result, even in a large-sized pump, the first member can be reliably arranged so as to cover the loose fitting hole, so that the fastening force of the fastening member can be evenly applied to the installation plate via the washer. Therefore, the installation plate can be securely fastened to the base plate by the fastening member, and the pump can be securely attached to the installation floor.

The communication hole is a circular hole having a diameter that allows movement of the fastening member from the center of the loose fitting hole to the inner circumference of the loose fitting hole. In this case, the center of the communicating hole is positioned with a gap from the center of the circular first member. Alternatively, the communicating hole is a long groove having a length that allows the fastening member to move from the center of the loosely fitting hole to the inner periphery of the loosely fitting hole.

The insertion hole is a circular hole whose center is spaced apart from the center of the circular second member. Alternatively, the insertion hole is a long groove that passes through the center of the circular second member and extends in the radial direction of the second member.

The installation plate has a holding portion that is provided concentrically with the loose fitting hole and rotatably holds the circular first member.

According to this aspect, by adjusting the postures of the first member and the second member, the center of the first member can be reliably arranged on the axis of the loose fitting hole. Therefore, the fastening force of the fastening member can be reliably applied to the installation plate.

The fastening member includes a stat bolt that is screwed into the fastening hole, and a nut that is screwed into the stat bolt and sandwiches the washer and the installation plate between the base plate and the nut, and the nut is the washer. It has a protruding part that protrudes in a spherical shape toward. When the position of the pump relative to the installation floor is adjusted, the axis of the mounting plate is tilted with respect to the axis of the base plate, and therefore the axis of the fastening hole (that is, the fastening member) is also tilted with respect to the axis of the loose fitting hole containing the washer. In this case, since the pressing of the washer by the fastening member is localized, there is a possibility that the force of pressing the washer may be biased. However, according to this aspect, since the fastening member is provided with a nut having a spherical protrusion, even if the fastening member is inclined with respect to the washer, the washer is evenly pressed, and the mounting plate is moved to the base plate. can be concluded.

A second aspect of the present invention is a washer through which a fastening member that fastens an installation plate protruding from a pump passes through a base plate arranged on an installation floor, the washer comprising a first member arranged on the installation plate; a second member movably disposed on the first member, the first member communicating with a loose fitting hole formed in the mounting plate and having the fastening member penetrate therethrough; The second member communicates with the communication hole, through which the fastening member is inserted, and the second member relative to the first member. has an insertion hole whose position relative to the communication hole can be changed by changing the attitude of the circular communication hole, the center of the circular communication hole is positioned at a distance from the center of the circular first member, The first member has a holding portion that rotatably holds the circular second member, and a radially recessed guide groove is formed on the outer circumference of the second member at a portion held by the holding portion. is provided, and the first member is provided with a washer for use in a pump, in which a guide pin that fits in the guide groove is arranged so as to penetrate therethrough .

According to the present invention, a washer can be placed at a fixed position on the mounting plate in a pump whose attitude relative to the mounting floor is adjustable. Therefore, the fastening force of the fastening member can be evenly applied to the installation plate via the washer.

BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing which shows the pump of embodiment of this invention. FIG. 1B is a cross-sectional view showing a state in which the installation floor is tilted from the state in FIG. 1A; Sectional drawing which shows the state which adjusted the attitude|position of the pump from the state of FIG. 1B. Sectional drawing which shows the attachment mechanism of the state of FIG. 1A. Sectional drawing which shows the attachment mechanism of the state of FIG. 1C. 4 is an exploded perspective view of the mounting mechanism; FIG. Sectional drawing which expanded a part of FIG. 2A. Sectional drawing which expanded a part of FIG. 2B. 3 is an exploded perspective view of the washer; FIG. Top view of the washer. FIG. 4 is a plan view of a state in which the posture of the washer main body with respect to the installation plate is changed; FIG. 8 is a plan view of another state in which the posture of the washer main body with respect to the installation plate is changed; FIG. 8 is a plan view of another state in which the posture of the washer main body with respect to the installation plate is changed; FIG. 4 is a plan view of a state in which the posture of the rotating body with respect to the washer main body is changed; FIG. 4 is a plan view of another state in which the posture of the rotating body with respect to the washer main body is changed; FIG. 4 is a plan view of another state in which the posture of the rotating body with respect to the washer main body is changed; The top view which shows the attitude|position of the washer in the state of FIG. 1A. The top view which shows the attitude|position of the washer in the state of FIG. 1C. The exploded perspective view of the washer of a 1st modification. The exploded perspective view of the washer of a 2nd modification. The exploded perspective view of the washer of a 3rd modification. The exploded perspective view of the washer of a 4th modification. Sectional drawing which shows the other modification of this invention. The top view which shows the other modification of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

1A-1C show a vertical axis pump 10 according to an embodiment of the invention. This vertical shaft pump 10 is attached to a pump floor (installation floor) 2 covering the upper side of the water suction tank 1, and discharges liquid such as rainwater flowing into the water suction tank 1 to the downstream side. The vertical shaft pump 10 includes a pump casing 12 , a rotating shaft 18 and an impeller 21 and is arranged on the pump bed 2 via a mounting mechanism 25 . When the pump floor 2, which is horizontal in the initial state as shown in FIG. 1A, is tilted for some reason as shown in FIG. It is adjustable by means of a mounting mechanism 25 as shown.

As shown in FIG. 1A, the pump casing 12 includes a pumping pipe 13 and a discharge pipe 14 connected to the upper end of the pumping pipe 13. By inserting from above into the mounting hole 2a formed in the pump floor 2, It is attached to the pump floor 2. The pumping pipe 13 is a straight pipe projecting downward in the vertical direction from the mounting hole 2a. The discharge pipe 14 is a bent pipe bent approximately 90 degrees and protrudes upward from the pump floor 2 . The discharge pipe 14 is mechanically connected to a water pipe (not shown) that is piped to a discharge tank on the downstream side.

A flange portion 15 for fixing the pump casing 12 including the pumping pipe 13 to the pump floor 2 is integrally provided on the lower end side of the discharge pipe 14 . The flange portion 15 protrudes from the outer periphery of the discharge pipe 14 in a direction orthogonal to the axis A of the water pump 13, and has an outer diameter larger than the inner diameter of the mounting hole 2a. In addition, the flange portion 15 may be provided on the upper portion of the pumping pipe 13 . A motor base 16 for mounting a drive motor (not shown) is provided on the upper portion of the discharge pipe 14 . The upper end of the motor base 16 protrudes above the motor floor 3 through the through hole 3a.

The rotating shaft 18 is arranged in the pumping pipe 13 along the axis A through the discharge pipe 14 . The upper end of the rotary shaft 18 protrudes outside from the discharge pipe 14 and is mechanically connected to the drive motor. A portion of the discharge pipe 14 through which the rotating shaft 18 penetrates is liquid-tightly sealed by a shaft sealing device 19 .

The impeller 21 is attached to the lower end of the rotating shaft 18 and arranged in the inner lower part of the pumping pipe 13 . As the rotating shaft 18 is rotated by the drive motor, the impeller 21 rotates together with the rotating shaft 18 and discharges the liquid in the suction tank 1 downstream through the pump casing 12 .

2A and 2B in conjunction with FIG. 1A, attachment mechanism 25 includes base plate 27, mounting plate 30, and fastening member 33. As shown in FIG. The mounting mechanism 25 also includes a horizontal movement member 35 for moving the installation plate 30 in the lateral (horizontal) direction with respect to the base plate 27 and a vertical movement member 35 for moving the installation plate 30 in the vertical (vertical) direction with respect to the base plate 27 . and a moving member 37 (see FIG. 3).

Also referring to FIG. 3, the base plate 27 is an annular member fixed to the upper surface of the pump floor 2 so as to surround the mounting hole 2a. The inner diameter of the base plate 27 is larger than the outer diameters of the pumping pipe 13 and the discharge pipe 14 , and the outer diameter of the base plate 27 is larger than the inner diameter of the mounting hole 2 a and the outer diameter of the flange portion 15 . The upper surface of the base plate 27 is provided with a first sliding contact portion 27a, which is a spherical concave portion recessed downward with a predetermined curvature. A concentric groove 27b centered on the axis of the base plate 27 is provided on the upper surface of the first sliding contact portion 27a. A seal member 28 for sealing between the upper surface of the base plate 27 (first sliding contact portion 27a) and the lower surface of the mounting plate 30 (second sliding contact portion 30a) is arranged in the concave groove 27b.

The installation plate 30 is an annular member attached to the lower portion of the flange portion 15 of the discharge pipe 14 . The inner diameter of the mounting plate 30 is larger than the outer diameters of the lift pipe 13 and the discharge pipe 14 . The mounting plate 30 has an outer diameter larger than the inner diameter of the mounting hole 2 a and smaller than the outer diameter of the base plate 27 . The lower surface of the mounting plate 30 is provided with a second sliding contact portion 30a which protrudes downward with the same curvature as that of the first sliding contact portion 27a, and which is a spherical convex portion complementary to the first sliding contact portion 27a (spherical concave portion). there is A surface layer 31 having a hardness and a coefficient of friction different from those of the surface of the first sliding contact portion 27a is formed on the surface of the second sliding contact portion 30a arranged on the first sliding contact portion 27a. The surface layer 31 is formed by hard chrome plating or fluorine resin coating, for example.

Alternatively, the first sliding contact portion 27a may be configured by a spherical convex portion that protrudes upward, and the second sliding contact portion 30a may be configured by a spherical concave portion that is depressed upward. The surface layer 31 may be provided on the surface of the first sliding contact portion 27a so as to have hardness and coefficient of friction different from those of the surface of the second sliding contact portion 30a.

The fastening member 33 passes through the installation plate 30 and fastens the installation plate 30 to the base plate 27 so that the installation plate 30 cannot move. A fastening structure using this fastening member 33 will be described in detail later.

The lateral movement member 35 is a jack bolt for moving the mounting plate 30 horizontally (radially) with respect to the base plate 27 . An annular frame 27c provided on the outer periphery of the first sliding contact portion 27a of the base plate 27 is provided with a bolt hole 27d into which the lateral movement member 35 is screwed. 27 d of bolt holes are provided in the annular frame 27c at intervals in the circumferential direction, and the horizontal movement member 35 is screwed to each. With all the laterally moving members 35 loosened outward, predetermined laterally moving members 35 are tightened into the bolt holes 27 d to press the outer peripheral surface of the mounting plate 30 , thereby horizontally moving the mounting plate 30 with respect to the base plate 27 . can move in any direction.

As shown in FIG. 3 , the vertical movement member 37 is a jack bolt for moving the mounting plate 30 vertically (longitudinally) upward with respect to the base plate 27 . A bolt hole 30b into which a vertical moving member 37 is screwed along the axis of the mounting plate 30 is provided in the outer peripheral portion of the second sliding contact portion 30a of the mounting plate 30 . A plurality of bolt holes 30b are provided in the installation plate 30 at intervals in the circumferential direction, and a vertical movement member 37 is screwed into each of the bolt holes 30b. By tightening the vertical movement member 37 downward, the upper surface of the base plate 27 is pressed, and the installation plate 30 can be vertically moved upward (separated) from the base plate 27 .

By releasing the fastening member 33 between the base plate 27 and the mounting plate 30 and operating the lateral movement member 35, the second sliding contact portion 30a can be moved (slid) on the first sliding contact portion 27a. By adjusting the attitude (angle) of the installation plate 30 with respect to the base plate 27 by rotating the installation plate 30 with the spherical sliding contact portions 27a, 30a, the attitude of the pump casing 12 with respect to the pump floor 2 can be adjusted. Further, by operating the vertical moving member 37 as necessary, the adjustment workability by operating the horizontal moving member 35 can be improved.

Therefore, for example, when the pump floor 2 is tilted downward to the left as shown in FIG. 1B due to an earthquake or the like, the pump casing 12 is swung leftward (clockwise) as shown in FIG. can be matched with the reference line L. By adjusting the posture of the pump casing 12 with respect to the pump floor 2 and arranging the pump casing 12 vertically, the pump 10 can be operated without causing the impeller 21 to interfere with the pump casing 12 .

As shown in FIG. 1B, when the pump floor 2 is tilted, the motor floor 3 is also tilted in many cases. The inclination angle β of the motor floor 3 is often different from the inclination angle α of the pump floor 2 . A support member 39 is arranged between them in order to support the motor base 16 (driving motor) on the motor floor 3 regardless of whether it is tilted or not while suppressing the influence of the vibration of the driving motor on the motor floor 3 . It is

The support member 39 is arranged between the support plate 16 a projecting laterally from the motor base 16 and the motor floor 3 . The support plate 16a is provided on the upper end of the motor base 16 projecting upward from the motor floor 3, and its outer diameter is larger than the diameter of the through hole 3a.

Anti-vibration rubber made of an elastic plastic material is used for the support member 39 . This anti-vibration rubber has the characteristic of elastically deforming when a load less than a specified load is applied, and plastically deforming when a load greater than the specified load is applied. That is, the support member 39 is made of anti-vibration rubber that elastically expands and contracts due to the vibration of the drive motor (a load less than a specified load) and that deforms plastically when a load greater than the specified load is applied due to an earthquake or the like. ing.

Here, since the axis of the base plate 27 extends perpendicularly to the pump floor 2 , the angle depends on the inclination of the pump floor 2 . That is, when the pump bed 2 is horizontal as shown in FIG. 1A, the axis of the base plate 27 coincides with the reference line L extending in the vertical direction. However, when the pump bed 2 is tilted at the tilt angle α as shown in FIG. 1B, the axis of the base plate 27 extends in a direction perpendicular to the tilt angle α, and therefore intersects the reference line L.

On the other hand, the axis of the installation plate 30 coincides with the axis A of the pumping pipe 13 . The base plate 27 and the mounting plate 30 are provided with a fastening structure using fastening members 33 so that the axis A of the pumping pipe 13 is aligned with the reference line L when the pump floor 2 is horizontal. However, as shown in FIG. 1C, when the attitude of the pump casing 12 is adjusted with respect to the slanted pump floor 2, the axis of the base plate 27 and the axis of the mounting plate 30 are no longer aligned. In addition, the position and angle at which the fastening member 33 penetrates the installation plate 30 are also changed. Therefore, in this embodiment, the fastening structure by the fastening member 33 is as follows.

(Overview of fastening structure)
2A, 2B, and 3, the fastening structure includes a fastening hole 41 provided in the base plate 27, a loose fit hole 42 provided in the mounting plate 30, and a A washer 45 is provided. The fastening member 33 is screwed into the fastening hole 41 through the washer 45 and the loose fitting hole 42 . Among them, the angle of the axis of the fastening hole 41 and the fastening member 33 depends on the inclination of the pump floor 2 . Also, the angle of the axial line of the washer 45 (communication hole 46 a and insertion hole 47 a ) and the loose fitting hole 42 depends on the inclination of the pump casing 12 .

The fastening hole 41 is a bolt hole that is open at the upper surface of the first sliding contact portion 27a and closed at the lower end. A plurality (eight in this embodiment) of the fastening holes 41 are provided at intervals in the circumferential direction around the axis of the base plate 27 . The axis A<b>1 of the fastening hole 41 extends along the axis of the base plate 27 .

The loose fitting hole 42 is a circular hole provided so as to pass through the second sliding contact portion 30a along the axis of the installation plate 30 (the axis A of the pumping pipe 13). A plurality of loose fitting holes 42 are provided at intervals in the circumferential direction around the axis of the mounting plate 30 so as to correspond to the fastening holes 41 . As shown in FIG. 2A, the axis A2 of the loose fitting hole 42 coincides with the axis A1 of the fastening hole 41 when the axis of the base plate 27 and the mounting plate 30 are aligned. That is, the circumferential and radial positions of the loose fitting holes 42 about the axis of the mounting plate 30 are the same as the circumferential and radial positions of the fastening holes 41 about the axis of the base plate 27 . . The diameter of the loose fitting hole 42 is larger than the diameter of the fastening hole 41, and with the fastening member 33 penetrating inside, the installation plate 30 is moved until the outer peripheral portion of the installation plate 30 contacts the annular frame 27c. It is set to allowable dimensions.

A plurality of washers 45 are used so as to block the upper ends of the plurality of loose fitting holes 42 respectively. As shown in FIGS. 4A, 4B and 5, each washer 45 includes a washer body (first member) 46 movably disposed on the mounting plate 30 and a washer body (first member) 46 movably disposed on the body 46. and a rotating body (second member) 47 .

The washer main body 46 has a predetermined thickness and is in the shape of a disk having a diameter larger than the diameter of the loose fitting hole 42 . The washer main body 46 is provided with a communication hole 46a that communicates with the loose fitting hole 42, and a holding portion 46b that holds the rotating body 47 rotatably.

The communication hole 46a is a circular hole through which the fastening member 33 is passed. The diameter of the communication hole 46a is formed larger than the diameter of the fastening member 33 so as to allow relative movement of the fastening member 33 in the direction in which the washer main body 46 extends (that is, the direction perpendicular to the axis A). As shown in FIGS. 6 and 7A to 7C, the position of the communication hole 46a with respect to the loose fitting hole 42 can be changed by changing the attitude (rotational angle position) of the washer main body 46 with respect to the mounting plate 30. FIG.

Specifically, as shown in FIGS. 2A and 6, with the central point _O1 of the washer main body 46 positioned on the axis A2 of the loose fitting hole 42, the communicating hole 46a is formed as follows. . The center point O ₂ of the communication hole 46 a is positioned with a distance D 1 from the center point O ₁ of the washer main body 46 (the center of the loose fitting hole 42 ). This interval D1 is set to be less than half the radius r1 of the loose fitting hole 42 . The radius r2 of the communicating hole 46a is smaller than the radius r1 of the loose fitting hole 42 and larger than half the radius r1 of the loose fitting hole 42. As shown in FIG. More specifically, the radius r2 of the communication hole 46a is set to a dimension that inscribes the inner peripheral surface of the loose fitting hole 42 in plan view.

As shown in FIGS. 4A and 5, the holding portion 46b is formed of a circular concave portion, and the communicating hole 46a is provided concentrically in the circular bottom surface. The diameter of the holding portion 46b is larger than the diameter of the communication hole 46a. The axial depth of the holding portion 46b is the same as the axial thickness of the rotating body 47, but may be shallower than the axial thickness of the rotating body 47, It may be deeper than the thickness.

The rotating body 47 has a disk shape with approximately the same diameter as the holding portion 46b, and is rotatably arranged in the holding portion 46b. The rotating body 47 is provided with an insertion hole 47a that communicates with the communication hole 46a and through which the fastening member 33 is inserted.

The insertion hole 47a is a circular hole penetrating the rotor 47 in the axial direction. The diameter of the insertion hole 47a is larger than the diameter of the fastening member 33, and is set to a size that allows the insertion of the fastening member 33 inclined at a predetermined angle with respect to the axis of the insertion hole 47a. In the posture of the rotating body 47 (see FIG. 6) in which the insertion hole 47a is located farthest from the center point _O1 of the washer main body 46, the insertion hole 47a is located inside the loose fitting hole . As shown in FIGS. 6 and 8A to 8C, the position of the insertion hole 47a with respect to the communication hole 46a can be changed by changing the attitude (rotation angle position) of the rotor 47 with respect to the washer main body 46. FIG.

Specifically, as shown in FIG. 6, the center point _O3 of the insertion hole 47a is located at a distance D2 from the center of the rotor 47 (that is, the center point _O2 of the communication hole 46a). This interval D2 is set to be the same as the interval D1 described above. As a result, the insertion hole 47a (that is, the fastening member 33) can be positioned at the center point O ₁ of the washer main body 46 (that is, the axis line A2 of the loose fitting hole 42) due to the rotation of the rotating body 47 within the holding portion 46b. It is possible (see FIG. 7B).

The washer 45 configured in this manner can independently rotate the washer main body 46 with respect to the mounting plate 30 and the rotating body 47 with respect to the washer main body 46 . By these rotations, the position of the communication hole 46a with respect to the loose fitting hole 42 and the position of the insertion hole 47a with respect to the communication hole 46a can be adjusted. As a result, the insertion hole 47 a (that is, the fastening member 33 ) can be arranged at a predetermined position inside the loose fitting hole 42 .

Specifically, as shown in FIGS. 6 and 7A to 7C, the rotation of the washer main body 46 about the axis A2 of the loose fitting hole 42 causes the communication hole 46a (rotating body 47 ) revolves around the axis A2 (center point O ₁ ). The communication hole 46a communicates only with a part of the loose fitting hole 42 when the rotating body 47 is in a specific posture, but can sequentially communicate with the entire area of the loose fitting hole 42 due to the rotation of the rotating body 47. . In addition, in the case of the posture of the rotating body 47 in which the insertion hole 47a is located farthest from the center point _O1 of the washer main body 46, the insertion hole 47a revolves along the inner peripheral surface of the loose fitting hole 42 (rotation locus T1 ).

As shown in FIGS. 6 and 8A to 8C, when the rotating body 47 rotates around the center point _O2 , the insertion hole 47a revolves around the center point _O2 in the communication hole 46a (rotation locus T2). This allows the insertion hole 47a to move to a predetermined position between the center point _O1 and the center point _O3 within the communication hole 46a.

That is, the rotation of the washer main body 46 adjusts the circumferential position of the insertion hole 47 a in the loose fitting hole 42 , and the rotation of the rotor 47 adjusts the radial position of the loose fitting hole 42 . As a result, the insertion hole 47 a is arranged above the fastening hole 41 in the loose fitting hole 42 , and the fastening member 33 passed therethrough can be screwed into the fastening hole 41 .

For example, as shown in FIG. 1A, when the pump floor 2 is horizontal, the axis of the base plate 27 and the axis of the mounting plate 30 are aligned with the reference line L so that the reference line L and the axis A of the pump casing 12 are aligned. matches. In this case, as shown in FIG. 2A, the axis A1 of the fastening hole 41 and the axis A2 of the loose fitting hole 42 also coincide. Therefore, as shown in FIG. 9A, the posture of the rotor 47 with respect to the washer main body 46 is adjusted so that the insertion hole 47a is positioned at the center point _O1 of the washer main body 46. As shown in FIG.

As described above, when the pump floor 2 tilts downward to the left (see FIG. 1B), the pump casing 12 must be swung leftward with respect to the pump floor 2 in order to align the axis A of the pump casing 12 with the reference line L. need to move. In this case, since the installation plate 30 moves leftward with respect to the base plate 27 together with the pump casing 12, the axis A1 of the fastening hole 41 and the axis A2 of the loose fitting hole 42 are separated from each other as shown in FIG. 2B. do.

At this time, the insertion hole 47a (fastening member 33) of the washer 45 can be arranged at a desired position in the loose fitting hole 42 as described above. Therefore, as shown in FIG. 9B, by adjusting the posture of the washer body 46 with respect to the loose fitting hole 42 and the posture of the rotating body 47 with respect to the washer body 46, the insertion hole 47a is arranged on the axis A1 of the fastening hole 41. At the same time, the center point _O1 of the washer main body 46 can be aligned with the axis A2 of the loose fitting hole 42 .

The position adjustment of the mounting plate 30 with respect to the base plate 27 may be performed with the washer 45 and the fastening member 33 removed, or may be performed with the fastening member 33 loosened from the fastening hole 41 .

As described above, the washer 45 of this embodiment includes a washer body 46 having a communication hole 46a that allows relative movement of the fastening member 33, and a change in the position of the insertion hole 47a with respect to the communication hole 46a by changing the posture of the washer body 46. and a rotating body 47 capable of changing the Therefore, by adjusting the posture of the washer main body 46 with respect to the loose fitting hole 42 and adjusting the posture of the rotating body 47 with respect to the washer main body 46, the insertion hole 47a is arranged on the axis A1 of the fastening hole 41, and the insertion hole 47a is inserted through the insertion hole 47a. The fastening member 33 can be screwed into the fastening hole 41 .

As a result, even if the pump 10 is large, the washer main body 46 can be reliably arranged so as to cover the loose fitting hole 42 , so that the fastening force of the fastening member 33 is evenly applied to the mounting plate 30 via the washer 45 . be able to. Therefore, the mounting plate 30 can be securely fastened to the base plate 27 by the fastening member 33 , and the pump 10 can be securely attached to the pump floor 2 .

As shown in FIG. 2B, when the axis of the mounting plate 30 is tilted with respect to the axis of the base plate 27 due to the adjustment, the axis of the fastening member 33 is also tilted with respect to the axis A2 of the loose fit hole 42 including the washer 45 . In this case, since the pressing of the washer 45 by the fastening member 33 is localized, there is a possibility that the force of pressing the washer 45 may be biased. Therefore, in this embodiment, the fastening member 33 is configured as follows.

As shown in FIGS. 4A and 4B , the fastening member 33 includes a stud bolt 50 screwed into the fastening hole 41 and a nut 51 screwed onto the stud bolt 50 . The fastening member 33 of the present embodiment also includes a washer 52 through which the stud bolt 50 is inserted and arranged between the washer 45 and the nut 51 .

The stud bolt 50 consists only of a threaded shaft without a head.

The nut 51 is a nut with a spherical washer having a flange portion 51a and a projecting portion 51b at one end in the axial direction. The flange portion 51 a protrudes in a direction perpendicular to the axis of the nut 51 . The protruding portion 51b is a spherical protruding portion that protrudes in a spherical shape having a predetermined curvature from the flange portion 51a. The nut 51 is arranged on the rotating body 47 via the washer 52 so that the protruding portion 51b is positioned on the washer 45 side, and sandwiches the washer 45 and the installation plate 30 between the base plate 27 and the nut 51 .

The washer 52 has a flat first surface 52a that contacts the rotor 47 and a curved second surface 52b that contacts the projecting portion 51b. The second surface 52b is recessed downward with the same curvature as the protrusion 51b, and is a spherical concave portion complementary to the protrusion 51b (spherical protrusion). The second surface 52b, which is a spherical recess, may be formed on the upper surface of the rotating body 47 (around the insertion hole 47a) without arranging the washer 52. FIG.

The stud bolt 50 screwed into the fastening hole 41 whose axis A1 is inclined with respect to the reference line L is inclined with respect to the axis A2 of the loose fitting hole 42 of the mounting plate 30 whose position is adjusted. If a general-purpose bolt integrally provided with a head or a general-purpose nut not provided with the projecting portion 51b is used, the head or nut is inclined with respect to the upper surface of the rotating body 47, and the contact portion between them becomes localized. , the force that presses the washer 45 is biased. On the other hand, in the present embodiment, since the projecting portion 51b is in surface contact with the second surface 52b, even if the stat bolt 50 is inclined, the first surface 52a uniformly applies the fastening force to the rotating body 47 with which the first surface 52a is in surface contact. can be added. Therefore, the mounting plate 30 can be fastened to the base plate 27 so as not to move.

It should be noted that the pump 10 and the washer 45 of the present invention are not limited to the configurations of the above embodiments, and various modifications are possible.

For example, the washer 45 may be modified as shown in FIGS. 10-13.

Specifically, as shown in FIG. 10, the communication hole 46a of the washer main body 46 allows movement of the fastening member 33 from the center (center point _O1 ) of the loose fitting hole 42 to the inner periphery of the loose fitting hole 42. It is good also as a long groove of the length which carries out. The width of the communicating hole 46a is such that the stud bolt 50 can be inserted therethrough. One end of the communication hole 46 a is positioned at the center of the washer main body 46 , and the other end of the communication hole 46 a is positioned near the inner peripheral surface of the loose fitting hole 42 .

As shown in FIG. 11, the insertion hole 47a of the rotating body 47 may be a long groove extending in the radial direction of the rotating body 47 through the center (center point O ₂ ) of the rotating body 47 . The groove width of the insertion hole 47a is such that the stud bolt 50 can be inserted therethrough. 11, the communication hole 46a of the washer main body 46 is also formed by a long groove, but the communication hole 46a may be formed by a circular hole as shown in FIG.

As shown in FIG. 12, when the communication hole 46a and the insertion hole 47a are configured by long grooves, the communication hole 46a and the insertion hole 47a are provided with a length extending in the radial direction to the radially facing portion of the loose fitting hole 42. good too.

As shown in FIG. 13, the rotating body 47 may be arranged directly on the upper surface of the washer main body 46 without providing the washer main body 46 with the holding portion 46b.

When the washer main body 46 is provided with the holding portion 46b, as shown in FIG. A mating guide pin 48 may be placed therethrough.

As shown in FIG. 14 , the mounting plate 30 may be provided with a holding portion 43 that rotatably holds the washer main body 46 . Specifically, the holding portion 43 is formed of a circular recess, and the loose fitting hole 42 is concentrically provided in the circular bottom surface. The inner diameter of the holding portion 43 is larger than the inner diameter of the loose fitting hole 42 . The axial depth of the holding portion 43 is shallower than the axial thickness of the washer main body 46 , but it may be the same as the axial thickness of the washer main body 46 or may be the same as the axial thickness of the washer main body 46 . It may be deeper than the thickness.

As shown in FIG. 15, marks (arrows) 46c and 47c may be provided on the upper surface of the washer main body 46 and the upper surface of the rotating body 47 to indicate the directions of their rotational angular positions. In this way, the operator can determine the displacement (rotation) amount, direction, and position of the washer main body 46 and the rotor 47 by looking at the marks 46c and 47c. Therefore, workability when adjusting the plurality of washers 45 can be improved.

The pump 10 and the pump equipment are not limited to the two-bed type having the pump bed 2 and the motor bed 3, and may be a single-bed type having only the pump bed 2.

1... Suction tank 2... Pump floor (installation floor)
DESCRIPTION OF SYMBOLS 2a... Attachment hole 3... Motor floor 3a... Through hole 10... Vertical shaft pump 12... Pump casing 13... Pumping pipe 14... Discharge pipe 15... Flange part 16... Motor base 16a... Support plate 18... Rotating shaft 19... Shaft sealing device 21 Impeller 25 Mounting mechanism 27 Base plate 27a First sliding contact portion 27b Groove 27c Annular frame 27d Bolt hole 28 Sealing member 30 Mounting plate 30a Second sliding contact portion 30b Bolt hole 31 Surface layer 33 Fastening member 35 Horizontally moving member 37 Vertically moving member 39 Supporting member 41 Fastening hole 42 Loose fitting hole 43 Holding part 45 Washer 46 Washer body (first member)
46a...Communication hole 46b...Holding portion 46c...Mark 47...Rotating body (second member)
47a... Insertion hole 47b... Guide groove 47c... Mark 48... Guide pin 50... Stud bolt 51... Nut 51a... Flange part 51b... Protruding part 52... Washer 52a... First surface 52b... Second surface L... Reference line A... Pumping Axis of tube A1... Axis of fastening hole A2... Axis of loose fitting hole _O1 ... Center point of washer body _O2 ... Center point of communication hole (rotating body) _O3 ... Center point of insertion hole r1... Center point of loose fitting hole Radius r2... Radius of communicating hole D1... Distance between center points O1 _{and O2} D2... Distance between center points O2 _{and O3 T1} ... Rotation locus of insertion hole centering on center point O1 T2... Center point _O2 The locus of rotation of the insertion hole centered on

Claims (9)

a pumping pipe protruding downward from a mounting hole formed in the installation floor;
a discharge pipe connected to the upper end of the lifting pipe and laid on the installation floor;
a mounting mechanism for mounting the lift pipe and the discharge pipe to the installation floor,
The attachment mechanism is
a first sliding contact portion fixed on the installation floor so as to surround the mounting hole and formed of one of a spherical concave portion and a spherical convex portion complementary to the spherical concave portion; an annular base plate having fastening holes;
a second sliding contact portion provided in the discharge pipe or the water discharge pipe and formed of the other of the spherical concave portion and the spherical convex portion; a mounting plate in which the second sliding contact portion is arranged on the first sliding contact portion so as to surround the fastening hole with the loose fitting hole;
a washer arranged on the mounting plate so as to block the upper end of the loose fitting hole;
a fastening member that passes through the washer and the loose fitting hole and is screwed into the fastening hole to fasten the installation plate to the base plate so that the installation plate cannot move;
the washer comprises a first member disposed on the mounting plate and a second member movably disposed on the first member;
The first member has a communication hole that communicates with the loosely fitting hole and through which the fastening member penetrates to allow relative movement of the fastening member in a direction in which the first member extends,
The second member has an insertion hole that communicates with the communication hole, through which the fastening member is inserted, and whose position relative to the communication hole can be changed by changing the posture of the second member with respect to the first member. ,
The first member has a holding portion that rotatably holds the circular second member,
A guide groove recessed in the radial direction is provided in the portion held by the holding portion on the outer periphery of the second member,
The pump , wherein a guide pin that fits into the guide groove is arranged to pass through the first member . 2. The pump according to claim 1, wherein said communication hole is a circular hole having a diameter that allows movement of said fastening member from the center of said loose fitting hole to the inner circumference of said loose fitting hole. 3. The pump according to claim 1, wherein the center of said communication hole is positioned at a distance from the center of said circular first member. 2. The pump according to claim 1, wherein said communication hole is a long groove having a length that allows movement of said fastening member from the center of said loose fitting hole to the inner circumference of said loose fitting hole. The pump according to any one of claims 1 to 4, wherein the insertion hole is a circular hole whose center is spaced apart from the center of the circular second member. The pump according to any one of claims 1 to 4, wherein the insertion hole is a long groove passing through the center of the circular second member and extending in the radial direction of the second member. 7. The pump according to any one of claims 1 to 6 , wherein the installation plate has a holding portion that is provided concentrically with the loose fit hole and rotatably holds the circular first member. The fastening member includes a stat bolt that is screwed into the fastening hole, and a nut that is screwed into the stat bolt and sandwiches the washer and the installation plate between itself and the base plate,
8. A pump according to any one of claims 1 to 7 , wherein the nut has a protrusion that spherically protrudes toward the washer. A washer through which a fastening member for fastening an installation plate protruding from the pump penetrates a base plate arranged on the installation floor,
a first member disposed on the mounting plate; and a second member movably disposed on the first member;
The first member has a communication hole that communicates with a loose fitting hole formed in the mounting plate and through which the fastening member passes, allowing relative movement of the fastening member in the direction in which the first member extends. have
The second member has an insertion hole that communicates with the communication hole, through which the fastening member is inserted, and whose position relative to the communication hole can be changed by changing the posture of the second member with respect to the first member,
The center of the circular communication hole is positioned at a distance from the center of the circular first member,
The first member has a holding portion that rotatably holds the circular second member,
A guide groove recessed in the radial direction is provided in the portion held by the holding portion on the outer periphery of the second member,
A washer for use in a pump , wherein a guide pin that fits in the guide groove is disposed through the first member .

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