CN107642675B - Coupler protector and mechanical device - Google Patents
Coupler protector and mechanical device Download PDFInfo
- Publication number
- CN107642675B CN107642675B CN201710576646.8A CN201710576646A CN107642675B CN 107642675 B CN107642675 B CN 107642675B CN 201710576646 A CN201710576646 A CN 201710576646A CN 107642675 B CN107642675 B CN 107642675B
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- protector
- cover
- coupling
- portions
- rotary machine
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- 230000001012 protector Effects 0.000 title claims abstract description 230
- 230000008878 coupling Effects 0.000 claims abstract description 76
- 238000010168 coupling process Methods 0.000 claims abstract description 76
- 238000005859 coupling reaction Methods 0.000 claims abstract description 76
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 11
- 230000000717 retained effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000470 constituent Substances 0.000 description 15
- 238000005452 bending Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The invention provides a coupling protector and a mechanical device, wherein the length of the coupling protector can be easily adjusted, the mounting operation and the dismounting operation can be easily carried out under the state that a driving shaft of a prime mover and a rotating shaft of a rotating machine are connected, and leg parts and special manufacturing equipment can be not needed. A coupling protector (1) is provided with: a cover (11) that can be mounted on the rotary machine; a 1 st protector (12) mounted on the cover; and a 2 nd protector (14) mounted on the 1 st protector. The cover (11) is provided with: an end plate (19) having a polygonal shape and a through hole (18) through which the rotating shaft can pass; and a plurality of side plate portions (20) extending from the end plate portion toward the No. 1 protector. The plurality of side plate portions are spaced apart from each other, and the 1 st protector has a 1 st multi-prism portion (30) fixed to the side plate portions. The 2 nd protector has a 2 nd multi-prismatic portion (36) into which a part of the 1 st multi-prismatic portion is inserted.
Description
Technical Field
The present invention relates to a coupling protector for covering a coupling for connecting a rotary shaft of a rotary machine such as a pump to a drive shaft of a prime mover such as a motor, and a machine device including the coupling protector.
Background
There is known a machine device in which a rotary shaft of a rotary machine is coupled to a drive shaft of a prime mover via a coupling (shaft joint) and the rotary shaft is rotated by rotating the drive shaft. Such a mechanical device is for example a pump device. The pump device includes a motor as a prime mover and a pump as a rotary machine, and a drive shaft of the motor is coupled to a rotary shaft of the pump via a coupling. In the pump device, a torque of a drive shaft of a motor is transmitted to a rotary shaft of a pump via a coupling, thereby rotating an impeller fixed to the rotary shaft.
In order to prevent a person from contacting the coupling rotating at a high speed, the exposed portion of the rotating shaft of the pump, and the exposed portion of the drive shaft of the motor, a coupling protector covering the coupling is generally provided.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-173680
Disclosure of Invention
When the coupling protector is attached to the pump device, the length of the coupling protector may be adjusted according to the distance between the pump and the motor. However, when the joint protector is formed of a plurality of parts, particularly when the joint protector has leg members, the structure of the joint protector becomes complicated, and as a result, it is difficult to adjust the length of the joint protector. Further, when the joint protector is constituted by a plurality of parts, it takes a cost.
In addition, when the coupling protector is manufactured using a manufacturing apparatus such as a die, a large manufacturing machine, or a special jig, the manufacturing cost of the coupling protector increases.
The coupling protector is attached to the pump device in a state where the operation of the pump device is stopped and the drive shaft of the motor is coupled to the rotary shaft of the pump. The coupling protector is also removed in a state where the drive shaft of the motor and the rotary shaft of the pump are coupled. However, when the coupling protector is formed of a plurality of components, it takes a lot of time to attach and detach the coupling protector in a state where the drive shaft of the motor and the rotary shaft of the pump are coupled.
The above-described problem may occur not only in the pump device but also in all the mechanical devices in which the rotary shaft of the rotary machine and the drive shaft of the prime mover are coupled via the coupling.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a joint protector which: the length can be easily adjusted, the mounting operation and the dismounting operation can be easily performed in a state that the driving shaft of the prime mover and the rotating shaft of the rotating machine are connected, and leg members and dedicated manufacturing equipment can be not required.
It is also an object of the present invention to provide a mechanical device having such a coupling protector.
In order to achieve the above object, one aspect of the present invention is a coupling protector for covering a coupling that connects a drive shaft of a prime mover and a rotary shaft of a rotary machine, the coupling protector including: a cover which can be mounted on the rotary machine; a 1 st protector mounted on the cover; and a 2 nd protector attached to the 1 st protector, the cover including: an end plate portion having a polygonal shape and having a through hole through which the rotating shaft can pass; and a plurality of side plate portions extending from the end plate portion toward the 1 st protector, the plurality of side plate portions being spaced apart from each other, the 1 st protector having a 1 st multi-prism portion fixed to the side plate portions, and the 2 nd protector having a 2 nd multi-prism portion into which a portion of the 1 st multi-prism portion is inserted.
In a preferred aspect of the present invention, the side plate portion and the 1 st polygonal columnar portion are fastened by a fastening member, and the 1 st polygonal columnar portion is formed with an elliptical hole into which the fastening member is inserted, the elliptical hole having an elliptical shape extending in a longitudinal direction of the side plate portion.
In a preferred aspect of the present invention, the 1 st protector has a 1 st flange portion protruding outward from the 1 st multi-prism portion, the 2 nd protector has a 2 nd flange portion protruding outward from the 2 nd multi-prism portion, one of the 1 st flange portion and the 2 nd flange portion is formed with an elongated hole, and the other of the 1 st flange portion and the 2 nd flange portion is formed with an insertion hole connected to the elongated hole.
In a preferred aspect of the present invention, the cover is formed of a single plate having a plurality of bent portions.
In a preferred aspect of the present invention, each of the 1 st protector and the 2 nd protector is formed of a single plate having a plurality of bent portions.
In a preferred aspect of the present invention, the one plate constituting the 1 st protector has the same shape as the one plate constituting the 2 nd protector.
In a preferred aspect of the present invention, each of the 1 st protector and the 2 nd protector is formed of at least two plates having a plurality of bent portions.
In a preferred aspect of the present invention, the at least two plates constituting the 1 st protector have the same shape as the at least two plates constituting the 2 nd protector.
In a preferred aspect of the present invention, the end plate portion is formed with a plurality of fastening holes for attaching the cover to the rotary machine.
In a preferred aspect of the present invention, the cover may be attached to the rotary machine so as to protrude from the rotary machine.
In a preferred aspect of the present invention, a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other, a plurality of top portions of the 1 st protector are formed by the 1 st polygonal columnar portion, a plurality of top portions of the 2 nd protector are formed by the 2 nd polygonal columnar portion, and at least one of the top portions of the cover, at least one of the top portions of the 1 st protector, and at least one of the top portions of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
Another aspect of the present invention is a mechanical device including: a prime mover having a drive shaft; a rotating machine having a rotating shaft; and the above-described coupling protector.
In a preferred aspect of the present invention, the joint protector is held by the rotary machine so as to project from the rotary machine.
Effects of the invention
According to the present invention, the coupling protector has a simple structure and is constituted by a small number of parts. Therefore, the length of the coupling protector can be easily adjusted in a state where the drive shaft of the prime mover and the rotary shaft of the rotary machine are coupled to each other, and the mounting work and the dismounting work of the coupling protector can be easily performed. Further, according to the present invention, the cost can be reduced.
Further, according to the present invention, the leg member for supporting the joint protector and the dedicated manufacturing equipment can be eliminated.
Drawings
Fig. 1 is a schematic view showing a pump apparatus.
FIG. 2 is a schematic view of a pump assembly having a coupling protector according to one embodiment of the present invention.
Fig. 3 is an enlarged view of the coupling protector shown in fig. 2.
Fig. 4 is a perspective view of the coupling protector.
Fig. 5 is a front view of the cover.
Fig. 6 is a view seen from the direction of line a of fig. 5.
Fig. 7 is a sectional view taken along line B-B of fig. 3.
Fig. 8 is an overall view showing the 1 st protector.
Fig. 9 is a view seen from the direction of line C of fig. 8.
Fig. 10 is a view showing the 1 st protector and the 2 nd protector when a part of the 1 st polygonal column portion is inserted into the 2 nd polygonal column portion.
Fig. 11 is a view showing another embodiment of the 1 st protector.
Fig. 12 is a view seen from the direction of line D of fig. 11.
Description of the reference numerals
1 coupler protector
2 Motor (prime mover)
2a motor casing
3 Pump (rotating machinery)
3a pump casing
4 impeller
5 drive shaft
7 rotating shaft
8 base
9 shell leg
10 shaft coupling
11 cover
12 st protective element
14 nd 2 protective part
18 through hole
19 end plate part
20 side plate part
21 cut
25 fastening hole
26 cut out section
30 st multi-prism part
30a upper side constituent member
30b lower side constituent member
33 st flange part
33a upper flange part
33b lower flange part
36 nd 2 nd multi-prism part
36a upper side constituent member
36b lower side constituent member
39 nd 2 flange part
39a upper side constituent member
39b lower side constituent member
44. 54 long hole
45. 55 inserting into the hole
53 oval hole
56 connecting hole
65 protective wall
100 Pump device (mechanical device)
Detailed Description
Embodiments of the present invention are described below with reference to the drawings. In fig. 1 to 12, the same or corresponding components are denoted by the same reference numerals, and redundant description thereof is omitted.
Fig. 1 is a schematic view showing a pump apparatus 100, and fig. 2 is a schematic view showing the pump apparatus 100 having a coupling protector 1 according to an embodiment of the present invention. The pump apparatus 100 is a mechanical apparatus including a motor 2 as a prime mover and a pump 3 as a rotary machine. The motor 2 and the pump 3 are fixed to the base 8. The drive shaft 5 of the motor 2 extends from the motor housing 2a of the motor 2 toward the pump 3, and the rotary shaft 7 of the pump 3 extends from the pump housing 3a of the pump 3 toward the motor 2. The pump housing 3a is supported by a housing leg 9, and the housing leg 9 is fixed to the base 8. The drive shaft 5 of the motor 2 is coupled to the rotary shaft 7 of the pump 3 via a coupling (shaft joint) 10. The torque of the drive shaft 5 of the motor 2 is transmitted to the rotary shaft 7 of the pump 3 via the coupling 10, and as a result, the impeller 4 fixed to the rotary shaft 7 rotates.
In the present embodiment, the center axis of the rotary shaft 7 of the pump 3 and the center axis of the drive shaft 5 of the motor 2 are aligned on a straight line. The common central axis of the rotary shaft 7 of the pump 3 and the drive shaft 5 of the motor 2 is depicted by a two-dot chain line labeled with reference sign CL.
The coupling 10, the exposed portion of the drive shaft 5 of the motor 2, and the exposed portion of the rotary shaft 7 of the pump 3 are covered with the coupling protector 1. The coupling protector 1 will be described below. Fig. 3 is an enlarged view of the coupling protector 1 shown in fig. 2. Fig. 4 is a perspective view of the coupling protector 1. The coupling protector 1 includes a cover 11 that can be attached to a pump 3 as an example of a rotary machine, a 1 st protector 12 attached to the cover 11, and a 2 nd protector 14 attached to the 1 st protector 12.
Fig. 5 is a front view of the cover 11, and fig. 6 is a view seen from the direction of line a of fig. 5. The cover 11 has a through hole 18 through which the rotary shaft 7 of the pump 3 can pass, and includes an end plate portion 19 having a polygonal shape, and a plurality of side plate portions 20 extending from the end plate portion 19 toward the 1 st protector 12 (and the 2 nd protector 14).
The cover 11 is formed of one plate having a plurality of bent portions. More specifically, the end plate portion 19 and the plurality of side plate portions 20 are formed by bending a single plate. As a method of bending a sheet of plate, a method using a bending machine (bending machine) can be cited. The end plate 19 and the plurality of side plates 20 form a cover 11 having a polygonal box-shaped structure. The plurality of bent portions extend between the end plate portion 19 and the plurality of side plate portions 20. The side plate portion 20 is parallel to the center axis CL, and the end plate portion 19 is perpendicular to the center axis CL. The side plate portion 20 may be inclined with respect to the center axis CL.
In the present embodiment, the end plate 19 has a quadrangular shape, but may have a triangular shape or a polygonal shape having five or more sides. A plurality of (four in the present embodiment) cutouts 21 are formed in the corners of the end plate portion 19. The side plate portions 20 are spaced apart from each other, and the cutout 21 is located between the side plate portions 20 adjacent to each other.
As shown in fig. 5, a plurality of fastening holes 25 for attaching the cover 11 to the pump housing 3a of the pump 3 are formed in the end plate portion 19. These plural fastening holes 25 are formed at equal intervals along the circumferential direction of the through-hole 18. In the present embodiment, three fastening holes 25 are formed, but the number of fastening holes 25 is not limited to this embodiment. Although not shown, instead of forming the fastening hole 25, a cutout extending outward from the through-hole 18 (i.e., toward a bent portion between the end plate 19 and the side plate 20) may be formed.
Fig. 7 is a sectional view taken along line B-B of fig. 3. In fig. 7, the cover 11 is shown mounted on the pump housing 3 a. The cover 11 is disposed concentrically with the rotary shaft 7 (and the drive shaft 5), and the center axis CL passes through the center of the cover 11. A plurality of casing holes (not shown) corresponding to the plurality of fastening holes 25 are formed in the pump casing 3a, and the screws 23 are inserted into the fastening holes 25 and the casing holes in a state where the fastening holes 25 are connected to the casing holes. As a result of the cover 11 being attached to the pump housing 3a (i.e., the pump 3) so as to protrude from the pump housing 3a, the coupling protector 1 is held on the pump housing 3a so as to protrude from the pump housing 3 a. In this way, the joint protector 1 is held by the pump housing 3a, and therefore, a leg member for supporting the joint protector 1 is not required. Instead of the screw 23, a combination of a bolt and a nut may be adopted. In addition, in order to attach the cover 11 to pump housings having various sizes, a plurality of holes different from the fastening holes 25 may be formed in the end plate portion 19.
As shown in fig. 1, 2, and 7, the housing leg 9 is attached to the pump housing 3a by screws 24. The end plate 19 is formed with a notch 26 for facilitating attachment of the casing leg 9 to the pump casing 3 a. The cutout 26 extends from the lowest portion of the through-hole 18 toward the base 8 so that a connection portion between the casing leg 9 and the pump casing 3a is exposed. The notch 26 and the through hole 18 are connected to each other. By forming the notch 26 in this manner, the operator can visually observe the connection portion between the casing leg 9 and the pump casing 3a from the side of the motor 2. Therefore, the operator can easily attach the housing leg 9 to the pump housing 3a from the motor 2 side. Although not shown, instead of forming the notch 26, a hole separate from the through-hole 18 may be formed below the through-hole 18.
The 1 st protector 12 and the 2 nd protector 14 will be described. As shown in fig. 3 and 4, the 1 st protector 12 includes a 1 st polygonal columnar portion 30 fixed to the plurality of side plate portions 20 of the cover 11, and a 1 st flange portion 33 projecting outward from the 1 st polygonal columnar portion 30. The 2 nd protector 14 has a 2 nd polygonal column portion 36 into which a part of the 1 st polygonal column portion 30 is inserted, and a 2 nd flange portion 39 that protrudes outward from the 2 nd polygonal column portion 36.
The protectors 12, 14 are disposed concentrically with the rotary shaft 7 (and the drive shaft 5), and the center axis CL passes through the centers of the protectors 12, 14. That is, the cover 11, the 1 st protector 12, and the 2 nd protector 14 are concentrically arranged, and the cover 11, the 1 st protector 12, and the 2 nd protector 14 extend parallel to the center axis CL. The 1 st protector 12 and the 2 nd protector 14 have the same structure, and therefore the 1 st protector 12 will be described below with reference to the drawings.
Fig. 8 is an overall view showing the 1 st protector 12. As shown in fig. 8, in the present embodiment, the 1 st polygonal section 30 has a quadrangular shape, but may have a triangular shape or a polygonal shape having five or more sides. The shape of the 1 st polygonal columnar portion 30 corresponds to the shape of the cover 11 (more specifically, the end plate portion 19). For example, if the 1 st polygonal member 30 has a quadrangular shape, the cover 11 also has a quadrangular shape, and if the 1 st polygonal member 30 has a pentagonal shape, the cover 11 also has a pentagonal shape.
The 1 st multi-prism portion 30 includes an upper component member 30a and a lower component member 30b that is detachable from the upper component member 30 a. The upper component member 30a has a bent portion formed by bending the upper component member 30a at the center thereof. By forming this bent portion, the upper component member 30a has a shape bent upward. In the present embodiment, the angle of the bent portion is 90 degrees.
Two upper flange portions 33a, 33a are formed on both sides of the upper component member 30a so as to protrude outward from both sides thereof. The upper component member 30a and the upper flange portions 33a, 33a are integrally formed. That is, the upper component member 30a and the upper flange portions 33a and 33a are formed by bending a single plate.
The lower component member 30b also has a bent portion formed by bending the lower component member 30b at the center thereof. By forming this bent portion, the lower component member 30b has a shape bent downward. In the present embodiment, the angle of the bent portion is 90 degrees.
Two lower flange portions 33b, 33b are formed on both sides of the lower component member 30b so as to protrude outward from the both sides. The lower component member 30b and the lower flange portions 33b, 33b are integrally formed. That is, the lower constituent member 30b and the lower flange portions 33b and 33b are formed by bending a single plate. In the present embodiment, the 1 st flange portion 33 is composed of an upper flange portion 33a and a lower flange portion 33 b.
As shown in fig. 8, the 1 st protector 12 is composed of two plates (i.e., an upper component member 30a and a lower component member 30b) having a plurality of bent portions. In the present embodiment, the 1 st protector 12 is formed of two plates, but the number of plates is not limited to this embodiment, and the 1 st protector 12 may be formed of three or more plates.
The 2 nd protector 14 is similarly composed of at least two plates having a plurality of bent portions. The at least two plates constituting the 1 st protector 12 have the same shape as the at least two plates constituting the 2 nd protector 14.
The 1 st protector 12 is provided with a protection wall 65. The protection wall 65 is disposed at the motor-side opening end of the 1 st polygon section 30. The protective wall 65 is composed of upper side wall members 65a, 65a extending from the upper side constituent member 30a toward the center of the 1 st protector 12 (i.e., the drive shaft 5 and the rotation shaft 7), and lower side wall members 65b, 65b extending from the lower side constituent member 30b toward the center of the 1 st protector 12 (i.e., the drive shaft 5 and the rotation shaft 7). The protective wall 65 is perpendicular with respect to the center axis CL.
The protective wall 65 has a hole 68 through which the drive shaft 5, the coupling 10, and the rotary shaft 7 can be inserted. The rigidity of the 1 st protector 12 can be improved by providing the protection wall 65. The 2 nd protector 14 is also provided with a protective wall 65. More specifically, the protective wall 65 is disposed at the motor-side opening end of the 2 nd polygonal columnar portion 36. By providing the protective wall 65 on the 2 nd protector 14 in this manner, the rigidity of the 2 nd protector 14 can be improved, and the contact of the human fingers with the drive shaft 5 and the coupling 10 positioned in the coupling protector 1 can be reliably prevented.
As shown in fig. 3, the side plate portion 20 of the cover 11 and the 1 st polygonal columnar portion 30 are fastened by a fastener, and an elliptical hole 53 into which the fastener is inserted is formed in the 1 st polygonal columnar portion 30. The elliptical hole 53 has an elliptical shape extending in the longitudinal direction of the side plate portion 20. The side plate portion 20 is formed with a coupling hole 56 (see fig. 4 and 6) that is connected to the elliptical hole 53. In a state where the elliptical hole 53 and the coupling hole 56 are connected, the cover 11 and the 1 st protector 12 are coupled by inserting the bolt 52 into the elliptical hole 53 and the coupling hole 56 and fixing them by a nut (not shown). In the present embodiment, the fastener for fastening the cover 11 and the 1 st protector 12 is constituted by the bolt 52 and the nut.
Since the elliptical hole 53 is formed in the 1 st polygonal columnar portion 30, the 1 st protector 12 can move in the longitudinal direction of the side plate portion 20 in a state of being coupled to the cover 11. By forming the elliptical hole 53, the 1 st protector 12 and the cover 11 can be coupled without any problem even if the side plate portion 20 is inclined with respect to the center axis CL.
Fig. 9 is a view seen from the direction of line C of fig. 8. As shown in fig. 9, the 1 st flange portion 33 extends parallel to the central axis CL, and the 1 st flange portion 33 (i.e., the upper flange portion 33a and the lower flange portion 33b) is formed with an elongated hole 44 extending parallel to the central axis CL and an insertion hole 45 adjacent to the elongated hole 44. In the present embodiment, the insertion hole 45 is disposed on the pump 3 side, and the elongated hole 44 is disposed on the motor 2 side. The insertion hole 45 is a hole separate from the long hole 44 at a distance from the long hole 44.
The upper flange portions 33a, 33a and the lower flange portions 33b, 33b are brought into contact with each other, and the bolt 50 (see fig. 3) is inserted into the insertion hole 45. Then, the bolt 50 is fixed by a nut 51 (see fig. 3) engaged with the bolt 50, whereby the upper component member 30a and the lower component member 30b are fastened to each other. The fastening member for fastening the upper component member 30a and the lower component member 30b is composed of a bolt 50 and a nut 51.
As described above, the 2 nd protector 14 has the same structure as the 1 st protector 12. As shown in fig. 3, the 2 nd polygonal columnar portion 36 includes an upper component member 36a and a lower component member 36b that is detachable from the upper component member 36 a. The 2 nd flange 39 includes an upper flange 39a and a lower flange 39 b.
As shown in fig. 4, the 2 nd flange portion 39 is formed with an elongated hole 54 extending parallel to the center axis CL and an insertion hole 55 adjacent to the elongated hole 54. The insertion hole 55 is disposed on the pump 3 side, and the elongated hole 54 is disposed on the motor 2 side. The insertion hole 55 is a hole separate from the long hole 54 at an interval from the long hole 54.
Fig. 10 is a view showing the 1 st protector 12 and the 2 nd protector 14 when a part of the 1 st polygonal portion 30 is inserted into the 2 nd polygonal portion 36. When a part of the 1 st polygonal columnar portion 30 is inserted into the 2 nd polygonal columnar portion 36, the 1 st flange portion 33 is sandwiched between the upper flange portion 39a and the lower flange portion 39 b. That is, the upper flange portion 39a is positioned above the upper flange portion 33a, and the lower flange portion 39b is positioned below the lower flange portion 33 b.
When a part of the 1 st multi-prismatic portion 30 is inserted into the 2 nd multi-prismatic portion 36, the insertion hole 55 of the 2 nd flange portion 39 is connected to the elongated hole 44 of the 1 st flange portion 33, and in this state, the bolt 60 is inserted into the insertion hole 55 and the elongated hole 44. The bolt 60 is fixed by a nut 61 (refer to fig. 3), whereby the 2 nd protector 14 is mounted on the 1 st protector 12. The fastener for attaching the 2 nd protector 14 to the 1 st protector 12 is constituted by a bolt 60 and a nut 61. Since the bolt 60 is inserted into the elongated hole 44, the 2 nd protector 14 can move parallel to the direction in which the elongated hole 44 extends, that is, parallel to the center axis CL (see the arrow in fig. 10).
As described above, since the 2 nd protector 14 can be moved relative to the 1 st protector 12, the length of the joint protector 1 can be adjusted according to the distance between the motor 2 and the pump 3. The 2 nd protective member 14 is opposed to the motor housing 2a of the motor 2. The distance between the motor-side opening end of the 2 nd polygonal columnar portion 36 and the motor case 2a of the motor 2 is a distance of such an extent as to prevent the passage of a human finger. Therefore, the fingers of the person can be prevented from coming into contact with the drive shaft 5 of the motor 2 and the coupling 10.
By forming the insertion hole 45 and the elongated hole 44 in the 1 st flange portion 33, the rigidity of the 1 st flange portion 33 can be improved, and the upper component member 30a and the lower component member 30b can be reliably fastened. That is, if one long hole extending over the entire range of the 1 st flange portion 33 is formed, stress concentration occurring in the 1 st flange portion 33 becomes large, and as a result, the rigidity of the 1 st flange portion 33 is lowered. When the upper component member 30a and the lower component member 30b are fastened together through the elongated hole, the bolt 50 moves, and the upper component member 30a and the lower component member 30b cannot be reliably fastened together. According to the present embodiment, since the insertion hole 45 is provided, it is not necessary to form a long hole in the entire range of the 1 st flange portion 33, and therefore, the rigidity of the 1 st flange portion 33 can be improved. Further, since the bolt 50 can be prevented from moving by inserting the bolt 50 into the insertion hole 45, the upper component 30a and the lower component 30b can be reliably fastened.
Further, according to the present embodiment, the portion of the 1 st flange portion 33 where the elongated hole 44 is formed can be reinforced by the portion of the 2 nd flange portion 39 where the insertion hole 55 is formed. That is, the portion of the 1 st flange portion 33 where the long hole 44 is formed is sandwiched between the portions of the flange portions 39a, 39b where the insertion hole 55 is formed. Therefore, the rigidity of the portion of the 1 st flange portion 33 where the long hole 44 is formed can be improved. In other words, the 2 nd flange portion 39 functions as a rib for reinforcing the 1 st flange portion 33.
A bolt 70 (see fig. 3) is inserted into the elongated hole 54 of the 2 nd flange portion 39, and the bolt 70 is fixed by a nut 71 (see fig. 3). The bolt 70 and the nut 71 constitute a fastener. By fastening the upper component member 36a and the lower component member 36b with the bolt 70 and the nut 71, the upper component member 36a and the lower component member 36b can be prevented from being displaced in the horizontal direction.
In the present embodiment, the 2 nd protector 14 is attached to the 1 st protector 12 by inserting the bolts 60 into the elongated holes 44 formed in the 1 st flange portion 33 and the insertion holes 55 formed in the 2 nd flange portion 39. However, the 2 nd protector 14 may be attached to the 1 st protector 12 by changing the positions of the holes 44 and 45 formed in the 1 st flange portion 33 and the positions of the holes 54 and 55 formed in the 2 nd flange portion 39 and inserting the bolts 60 into the insertion holes 45 formed in the 1 st flange portion 33 and the elongated holes 54 formed in the 2 nd flange portion 39. That is, the 2 nd protector 14 can be movably attached to the 1 st protector 12 by forming a long hole in one of the 1 st flange portion 33 and the 2 nd flange portion 39 and forming an insertion hole connected to the long hole in the other.
As shown in fig. 4, the top portions of the plurality of covers 11 are formed by the side plate portions 20 adjacent to each other, the top portions of the plurality of 1 st protectors 12 are formed by the bent portions of the constituent members 30a, 30b, and the top portions of the plurality of 2 nd protectors 14 are formed by the bent portions of the constituent members 36a, 36 b. The top of the 1 st protector 12 is also formed on the connecting portion of the upper constituent member 30a and the lower constituent member 30b, and the top of the 2 nd protector 14 is also formed on the connecting portion of the upper constituent member 36a and the lower constituent member 36 b.
In the present embodiment, at least one of the top portions of the caps 11, at least one of the top portions of the 1 st protector 12, and at least one of the top portions of the 2 nd protector 14 are located on the central axis CL passing through these caps 11, protectors 12, 14 (more specifically, above or below the central axis CL). The reason for this is as follows. The pump apparatus 100 may be installed outdoors. By disposing the joint protector 1 in this manner, water such as rain that comes into contact with the joint protector 1 can be quickly made to flow down from the joint protector 1. In addition, with this arrangement, the water that has entered the joint protector 1 can be collected at one location, and as a result, the water can be quickly discharged to the outside.
According to the present embodiment, since manufacturing equipment such as a die, a large-scale manufacturing machine, and a dedicated jig is not required when manufacturing the joint protector 1, the manufacturing cost of the joint protector 1 can be reduced. Further, according to the present embodiment, the joint protector 1 is constituted by a relatively small number of components (i.e., the cover 11, the 1 st protector 12, and the 2 nd protector 14), and the structure thereof is simple. Therefore, the coupling protector 1 can be easily assembled and disassembled in a state where the drive shaft 5 of the motor 2 and the rotary shaft 7 of the pump 3 are coupled. Further, by constituting the coupling protector 1 with a smaller number of parts, the initial cost can be reduced.
Furthermore, according to the present embodiment, since the leg member for supporting the joint protector 1 is not required, and the structure of the joint protector 1 can be simplified, the length of the joint protector 1 can be easily adjusted in a state where the drive shaft 5 of the motor 2 and the rotary shaft 7 of the pump 3 are coupled.
Fig. 11 is a view showing another embodiment of the 1 st protector 12 (and the 2 nd protector 14), and fig. 12 is a view seen from a direction of line D in fig. 1. In the above embodiment, each of the 1 st protector 12 and the 2 nd protector 14 is formed of two plates having a plurality of bent portions. However, in the present embodiment, as shown in fig. 11 and 12, the 1 st protector 12 (and the 2 nd protector 14) are each formed of one plate having a plurality of bent portions. Also, one plate constituting the 1 st protector 12 has the same shape as one plate constituting the 2 nd protector 14. According to the present embodiment, the number of components can be further reduced.
In the above-described embodiment, the configuration in which a part of the 1 st multi-prismatic portion 30 is inserted into the 2 nd multi-prismatic portion 36 has been described, but a part of the 2 nd multi-prismatic portion 36 may be inserted into the 1 st multi-prismatic portion 30. With such a configuration, the same effects as those in the above-described embodiment can be obtained.
The above-described embodiments are described for the purpose of enabling a person having ordinary knowledge in the art to which the present invention pertains to practice the present invention. As long as a person skilled in the art can naturally perform various modifications of the above-described embodiments, the technical idea of the present invention can be applied to other embodiments. Therefore, the present invention is not limited to the embodiments described above, and is to be interpreted within the maximum scope following the technical idea defined by the claims.
Claims (25)
1. A coupling protector for covering a coupling that connects a drive shaft of a prime mover to a rotary shaft of a rotary machine, the coupling protector comprising:
a cover mountable on the rotary machine;
a 1 st protector mounted on the cover; and
a 2 nd protector mounted on the 1 st protector,
the cover is provided with: an end plate portion having a polygonal shape and having a through hole through which the rotating shaft can pass; and a plurality of side plate portions extending from the end plate portion toward the 1 st protector,
the plurality of side plate portions are spaced apart from each other,
the 1 st protector has a 1 st polygonal portion fixed to the side plate portion,
the 2 nd protector has a 2 nd polygonal portion into which a portion of the 1 st polygonal portion is inserted,
the side plate portion and the 1 st polygonal columnar portion are fastened by a fastener,
an elliptical hole into which the fastener is inserted is formed in the 1 st polygonal post portion,
the elliptical hole has an elliptical shape extending in a lengthwise direction of the side plate portion corresponding to a side of the polygonal shape of the end plate portion,
a connecting hole connected to the elliptical hole is formed in the side plate portion,
the drive shaft of the prime mover has a common center axis with the rotating shaft of the rotating machine.
2. A coupling protector according to claim 1 wherein,
the 1 st protector has a 1 st flange portion protruding outward from the 1 st polygonal pillar portion,
the 2 nd protector has a 2 nd flange portion protruding outward from the 2 nd polygonal column portion,
a long hole is formed in one of the 1 st flange portion and the 2 nd flange portion,
an insertion hole connected to the elongated hole is formed in the other of the 1 st flange portion and the 2 nd flange portion.
3. A coupling protector according to claim 1 wherein,
the cover is formed of a single plate having a plurality of bent portions.
4. A coupling protector according to claim 2 wherein,
the cover is formed of a single plate having a plurality of bent portions.
5. A coupling protector according to any one of claims 1 to 4,
the 1 st protector and the 2 nd protector are each formed of one plate having a plurality of bent portions.
6. A coupling protector according to claim 5 wherein,
the one plate constituting the 1 st protector has the same shape as the one plate constituting the 2 nd protector.
7. A coupling protector according to any one of claims 1 to 4,
the 1 st protector and the 2 nd protector are each composed of at least two plates having a plurality of bent portions.
8. A coupling protector according to claim 7 wherein,
the at least two plates constituting the 1 st protector have the same shape as the at least two plates constituting the 2 nd protector.
9. A coupling protector according to any one of claims 1 to 4,
a plurality of fastening holes for attaching the cover to the rotary machine are formed in the end plate portion.
10. A coupling protector according to claim 5 wherein,
a plurality of fastening holes for attaching the cover to the rotary machine are formed in the end plate portion.
11. A coupling protector according to claim 6 wherein,
a plurality of fastening holes for attaching the cover to the rotary machine are formed in the end plate portion.
12. A coupling protector according to claim 7 wherein,
a plurality of fastening holes for mounting the cover to the rotary machine are formed in the end plate portion.
13. A joint protector according to claim 8,
a plurality of fastening holes for attaching the cover to the rotary machine are formed in the end plate portion.
14. A coupling protector according to any one of claims 1 to 4,
the cover may be mounted to the rotary machine in a manner projecting from the rotary machine.
15. A joint protector according to claim 5,
the cover may be mounted to the rotary machine in a manner to protrude from the rotary machine.
16. A coupling protector according to claim 6 wherein,
the cover may be mounted to the rotary machine in a manner projecting from the rotary machine.
17. A joint protector according to claim 7,
the cover may be mounted to the rotary machine in a manner projecting from the rotary machine.
18. A coupling protector according to claim 8 wherein,
the cover may be mounted to the rotary machine in a manner projecting from the rotary machine.
19. A coupling protector according to any one of claims 1 to 4,
a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other,
a plurality of top portions of the 1 st protector are formed by the 1 st polygonal portions,
a plurality of top portions of the 2 nd protector are formed by the 2 nd polygonal column portion,
at least one of a top of the cover, at least one of a top of the 1 st protector, and at least one of a top of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
20. A coupling protector according to claim 5 wherein,
a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other,
a plurality of top portions of the 1 st protective members are formed by the 1 st polygonal column portion,
a plurality of top portions of the 2 nd protector are formed by the 2 nd polygonal column portion,
at least one of a top of the cover, at least one of a top of the 1 st protector, and at least one of a top of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
21. A coupling protector according to claim 6 wherein,
a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other,
a plurality of top portions of the 1 st protector are formed by the 1 st polygonal portions,
a plurality of top portions of the 2 nd protecting members are formed by the 2 nd polygonal column part,
at least one of a top of the cover, at least one of a top of the 1 st protector, and at least one of a top of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
22. A coupling protector according to claim 7 wherein,
a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other,
a plurality of top portions of the 1 st protector are formed by the 1 st polygonal portions,
a plurality of top portions of the 2 nd protector are formed by the 2 nd polygonal column portion,
at least one of a top of the cover, at least one of a top of the 1 st protector, and at least one of a top of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
23. A coupling protector according to claim 8 wherein,
a plurality of top portions of the cover are formed by the plurality of side plate portions adjacent to each other,
a plurality of top portions of the 1 st protector are formed by the 1 st polygonal portions,
a plurality of top portions of the 2 nd protector are formed by the 2 nd polygonal column portion,
at least one of a top of the cover, at least one of a top of the 1 st protector, and at least one of a top of the 2 nd protector are located on a central axis passing through the cover, the 1 st protector, and the 2 nd protector.
24. A mechanical device is characterized by comprising:
a prime mover having a drive shaft;
a rotating machine having a rotating shaft; and
a coupling protector as defined in any one of claims 1 to 23.
25. The mechanical device of claim 24,
the coupling protector is retained on the rotary machine in a manner projecting from the rotary machine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016144835A JP6780974B2 (en) | 2016-07-22 | 2016-07-22 | Coupling guards and machinery |
| JP2016-144835 | 2016-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107642675A CN107642675A (en) | 2018-01-30 |
| CN107642675B true CN107642675B (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710576646.8A Active CN107642675B (en) | 2016-07-22 | 2017-07-14 | Coupler protector and mechanical device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6780974B2 (en) |
| CN (1) | CN107642675B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6674521B2 (en) * | 2017-11-29 | 2020-04-01 | テラル株式会社 | Coupling guard and rotary drive with coupling guard |
| JP2019132407A (en) * | 2018-02-02 | 2019-08-08 | 住友重機械ギヤボックス株式会社 | Power transmission device |
| CN108662033B (en) * | 2018-06-01 | 2020-04-14 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Adjustable shaft coupling protection device |
| JP7367961B2 (en) | 2019-08-19 | 2023-10-24 | 株式会社川本製作所 | Pump equipment and guards |
| CN110701477A (en) * | 2019-10-23 | 2020-01-17 | 苏州工业职业技术学院 | Baffle assembly suitable for automation equipment |
| JP2021110427A (en) * | 2020-01-15 | 2021-08-02 | 株式会社荏原製作所 | Coupling guard and mechanical device |
| JP7470615B2 (en) | 2020-10-29 | 2024-04-18 | 株式会社酉島製作所 | Shaft coupling cover and pump device equipped with same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107642675A (en) | 2018-01-30 |
| JP6780974B2 (en) | 2020-11-04 |
| JP2018013229A (en) | 2018-01-25 |
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