WO2023144956A1

WO2023144956A1 - Pump support mechanism and pump device

Info

Publication number: WO2023144956A1
Application number: PCT/JP2022/003046
Authority: WO
Inventors: 哲矢小田切; 直寿寺島; 明典佐藤
Original assignee: 樫山工業株式会社
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-08-03

Abstract

A pump support mechanism (2) of a pump device (1) supports a pump rack (4) on which a pump (3) is mounted by a base frame (6) via a rubber vibration isolator (5). A boss (7) on the pump rack (4) side of the pump support mechanism (2) abuts against an inner peripheral edge (81) of a boss hole (8) on the base frame (6) side to restrict the swinging of the pump (3) during pump transportation or the like, thereby preventing damage to the rubber vibration isolator (5). A bolt (9) fixed to the boss (7) on the pump rack (4) side hits a frame back side (64) of the base frame (6) to inhibit a spacing between the pump rack (4) and the base frame (6) from expanding, thereby restricting the stretch of the rubber vibration isolator (5). During the pump operation, the bolt (9) is spaced apart downward from the frame back side (64), and hence a function for suppressing vibration noise by the rubber vibration isolator (5) is not inhibited.

Description

Pump support mechanism and pump device

The present invention relates to a pump support mechanism that supports a pump via anti-vibration rubber, and a pump device equipped with the pump support mechanism.

Pumps such as dry vacuum pumps are generally installed on the base frame via anti-vibration rubber to suppress vibration noise during operation. The pump is transported while being supported by the base frame via anti-vibration rubber, and installed at the pump installation site. For example, as shown in FIG. 4, the legs 111 of the pump frame 110 on which the pump 100 is mounted are attached to the base frame 130 with anti-vibration rubbers 120 interposed therebetween. The anti-vibration rubber 120 is arranged so as to be vertically extendable along a shaft 140 vertically extending downward from the rear surface of the leg portion 111 of the pump base 110 . When the pump 100 is transported or the like, the fixing bracket 150 is attached between the pump base 110 and the base frame 130, and the pump 100 mounted on the pump base 110 supported by the anti-vibration rubber 120 is shaken. I try not to

The fixing bracket 150 prevents the vibration of the pump due to elastic deformation of the rubber vibration isolator 120 during transportation of the pump, and prevents damage such as breakage due to excessive force being applied to the rubber vibration isolator. In addition, it prevents the anti-vibration rubber from being excessively stretched when the pump is lifted from a loading platform such as a truck. After installing the pump, the fixing bracket is removed. If the fixing bracket is not removed, the anti-vibration rubber will not function and the vibration noise cannot be suppressed.

Here, in the compressor-mounted equipment described in Patent Document 1, the legs of the compressor are attached to the bottom frame with bolts and nuts, and the bolts are coaxially encircled, and a barrier is provided between the legs and the bottom frame. The vibration rubber is sandwiched. A stopper for preventing overturning of the compressor is attached to the bolt. During transportation, the stopper hits the leg portion before the vibration isolator is deformed significantly, suppressing excessive deformation of the vibration isolator and preventing the compressor from overturning. In a normal state, the stopper is separated from the leg so as not to interfere with the expansion and contraction of the vibration-isolating rubber (anti-vibration function), so the compressor can be operated without removing the stopper. Patent Document 2 also describes an outdoor unit of an air conditioner having a similar mechanism.

JP 2013-148236 A JP-A-2000-249369

　In the pump support mechanism shown in Fig. 4, it is necessary to attach and detach the fixing bracket, which is complicated. It is desirable to be able to fix the pump during transportation or the like without requiring a pump fixing member such as a fixing bracket, and to prevent breakage and excessive elongation of the anti-vibration rubber.

On the other hand, the mechanisms described in

Patent Documents

1 and 2 do not require parts that must be attached during transportation and removed after transportation. However, if the pump is shaken excessively during transportation or the like, an excessive force is applied to the anti-vibration rubber, and there is a risk that the anti-vibration rubber will be damaged or broken. In addition, an excessive load is applied to pump connection members such as pipes and bellows, and these members may be damaged. Furthermore, there is a risk that the pump will come into contact with peripheral members, such as a panel, that are arranged around the pump, causing damage to these peripheral members or the pump.

In view of these points, the object of the present invention is to provide a pump that can avoid vibration of the pump, breakage and elongation of anti-vibration rubber, etc., without separately attaching a member for fixing the pump when the pump is transported or lifted. An object of the present invention is to provide a support mechanism and a pump device having the pump support mechanism.

In order to solve the above problems, the present invention provides a pump support mechanism in which a pump mount on which a pump is mounted is supported by a base frame via anti-vibration rubber,
A gap dimension in the vertical direction between the pump stand and the base frame in which the anti-vibration rubber is sandwiched and spanned between the pump stand and the base frame at a position different from the anti-vibration rubber. is equipped with a regulating member that regulates the
The regulation member is
A boss extending vertically,
a stopper attached to the boss;
and
The boss
an attachment end attached to a member of one of the pump cradle and the base frame;
a protruding end penetrating a boss hole formed in the other member of the pump mount and the base frame with play and protruding in a direction opposite to the one member;
and
The stopper is attached to the protruding end of the boss so as to engage with the other member when the gap dimension increases to the set dimension.

Here, as the stopper, a bolt that is coaxially screwed into a screw hole that opens in the end face of the protruding end of the boss can be used. As the bolt, a bolt whose head has an outer diameter larger than the hole diameter of the boss hole is used.

In the pump support mechanism of the present invention, the boss attached to one member of the pump frame and the base frame abuts against the inner peripheral edge of the boss hole formed in the other member, causing excessive pump movement during transportation of the pump. Shaking is limited and excessive force does not act on the anti-vibration rubber. Further, when the pump is lifted, the stopper prevents the gap between the pump mount and the base frame from expanding beyond the set size, thereby limiting the expansion of the vibration-proof rubber. Furthermore, since the stopper is separated from the pump mount or the base frame when the gap dimension is less than the set dimension, the function of suppressing vibration noise of the rubber vibration isolator during operation of the pump is not hindered.

By using the pump support mechanism of the present invention, excessive swinging of the pump during pump transportation, etc. is restricted, so breakage and excessive stretching of the anti-vibration rubber can be prevented. Moreover, since excessive load is prevented from being applied to the pump connecting member (pipe, bellows), damage to the pump connecting member can be prevented. Furthermore, since the pump is prevented from coming into contact with pump peripheral members (panels, etc.), damage to the pump and peripheral members due to contact can be prevented.

(A) is an explanatory diagram showing a pump device having a pump support mechanism to which the present invention is applied, (B) is a plan view of a pump stand, and (C) is a plan view of a base frame. (A) is an explanatory diagram showing a pump support mechanism to which the present invention is applied, (B) is an explanatory diagram showing an enlarged main portion thereof, and (C) is an explanatory diagram showing a boss and a boss hole. . FIG. 5 is an explanatory diagram showing another example of a pump support mechanism; It is an explanatory view showing a conventional pump attachment mechanism.

An embodiment of a pump device having a pump support mechanism to which the present invention is applied will be described below with reference to the drawings. As shown in FIG. 1, the pump device 1 includes a device housing 1A with casters, and a pump 3 supported by a pump support mechanism 2 is arranged inside the device housing 1A. The pump support mechanism 2 includes a pump base 4 on which the pump 3 is mounted, and a base frame 6 supporting the pump base 4 via anti-vibration rubber 5 . The pump pedestal 4 is made of a metal frame material, and includes, for example, a pedestal top surface 41 having a rectangular outline and four legs 42 arranged at the four corners thereof. The base frame 6 is also made of a metal frame material, and includes, for example, a frame top plate portion 61 having a rectangular outline that is one size larger than the pump stand 4, and four legs 62 formed at the four corners of the frame top plate portion 61. there is

The pump support mechanism 2 will be described with reference to FIG. 2 as well. A cylindrical boss 7 vertically extends downward from the horizontal bottom surface 43 of the four legs 42 of the pump mount 4 . A large-diameter disc-shaped flange 71 a formed on the upper end 71 (mounting end) of the boss 7 is fixed to the bottom plate portion defining the bottom surface 43 of the leg 42 of the pump base 4 . Circular boss holes 8 are formed at the four corners of the frame top plate portion 61 of the base frame 6 on the lower side of the pump mount 4 at positions coaxial with the bosses 7 . The boss hole 8 penetrates the frame top plate portion 61 in the vertical direction. The hole diameter of the boss hole 8 is one size larger than the outer diameter of the boss 7 . A lower end portion 72 of the boss 7 penetrates the boss hole 8 with play from the top surface 63 side of the frame top plate portion 61 and protrudes toward the frame back surface 64 side. When the pump mount 4 is displaced laterally with respect to the base frame 6, the bosses 7 on the pump mount 4 side come into contact with the inner peripheral edges 81 of the boss holes 8 on the base frame 6 side, thereby limiting lateral displacement of the pump mount 4 side. be done. A gap dimension D1 formed between the inner peripheral edge 81 of the boss hole 8 and the lower end portion 72 of the boss is set to an appropriate value based on the weight of the pump, the elastic characteristics of the rubber vibration isolator 5, and the like.

A lower end portion 72 (protruding end) of the boss 7 protrudes from the boss hole 8 toward the rear surface 64 of the frame by a predetermined distance. A screw hole is opened in the end surface of the lower end portion 72 of the boss 7, and a bolt 9 functioning as a stopper is coaxially screwed into the hole from below. The outer diameter of the head of the bolt 9 is slightly larger than that of the boss hole 8, and when raised, it can be engaged with the rear surface 64 of the frame from below. The bolt 9 functions as a retainer for the boss 7, and also prevents the vertical gap between the pump mount 4 and the base frame 6 from expanding beyond a set dimension. To support. Thus, the boss 7 to which the bolt 9 is attached functions as a restricting member that restricts the gap dimension D0 between the pump stand 4 and the base frame 6, in which the rubber vibration isolator 5 is sandwiched, to a set dimension or less.

A mounting bracket 10 is fixed to the side surface of each leg portion 42 of the pump base 4 and to the central portion of one short side surface. The bottom surface 102 of the bottom plate 101 of the mounting bracket 10 is a horizontal plane at the same height as the bottom surface 43 of the leg portion 42 . A disk-shaped rubber vibration isolator 5 is sandwiched between the bottom surface 102 and the top surface 63 of the frame top plate portion 61 of the base frame 6 positioned below.

An upper bolt shaft portion 12a is coaxially attached to the upper end surface of the anti-vibration rubber 5, and a lower bolt shaft portion 12b is also attached coaxially to the lower end surface thereof. The upper bolt shaft portion 12a protrudes upward through a shaft hole formed in the bottom plate 101 of the mounting bracket 10 on the side of the pump base 4, and a nut 13a is screwed into the protruding shaft end portion to secure the bottom plate. 101 is fixed. Similarly, the lower bolt shaft portion 12b protrudes downward through a shaft hole formed in the frame top plate portion 61 of the lower base frame 6, and a nut 13b is screwed into the protruding shaft portion. It is fixed to the frame top plate portion 61 . In this example, an annular spacer 14 is inserted between the anti-vibration rubber 5 and the upper bottom plate 101 to adjust the gap. In this manner, the vibration isolator 5 is sandwiched between the pump mount 4 and the base frame 6 so as to be elastically deformable in the vertical direction.

Here, in a state where the pump 3 is not in operation, a static load is applied to the anti-vibration rubber 5 from the side of the pump base 4 on which the pump 3 is mounted, and it is elastically deformed and crushed by a predetermined amount. be. In this state, the upper stepped end surface 92 of the head of the bolt 9 attached to the lower end 72 of the adjacent boss 7 is separated downward from the frame rear surface 64 of the frame top plate portion 61 by a certain distance. in a non-contact position. The axial length of the boss 7, the mounting height of the bolt 9 to the boss 7, and the like are set so as to achieve such a positional relationship. A distance D2 between the stepped end surface 92 of the bolt 9 and the rear surface 64 of the frame is appropriately set according to the weight of the pump, the elastic characteristics of the rubber vibration isolator 5, and the like. On the other hand, the boss 7 is coaxially arranged with respect to the boss hole 8, and as described above, the outer peripheral surface thereof is in a non-contact state separated from the inner peripheral edge 81 of the boss hole 8 by a certain distance. .

In this example, the bosses 7 functioning as regulating members are arranged at four locations between the pump mount 4 and the base frame 6, and the anti-vibration rubbers 5 are arranged at five locations between these members. are placed. The location and the number of bosses 7 and anti-vibration rubbers 5 are appropriately set according to the weight balance of the pump 3 to be mounted, and are not limited to the arrangement of this example.

As shown in FIG. 1, the pump device 1 having the pump support mechanism 2 configured as described above has a pump frame 4 on which the pump 3 is mounted, which is attached to the base frame 6 with anti-vibration rubber 5 interposed therebetween. there is In this state, the pump device 1 is transported to a pump installation site or the like.

When the pump 3 side shakes during transportation, the boss 7 on the pump 3 side moves laterally along with it and comes into contact with the inner peripheral edge 81 of the boss hole 8 on the base frame 6 side. Excessive swinging of the pump 3 is restricted by the boss 7 abutting against the inner peripheral edge 81 of the boss hole 8 of the base frame 6 . Excessive force caused by the lateral vibration of the pump 3 does not act on the vibration isolator 5 sandwiched between the base frame 6 and the pump stand 4, and the vibration isolator 5 is greatly deformed. Nor. Therefore, excessive shaking during transportation can be restricted, and damage or breakage of the anti-vibration rubber 5 due to excessive shaking can be avoided.

When hoisting the pump 3 at a location where the pump is installed, the bolt 9 fixed to the boss 7 hits the frame rear surface 64 of the base frame 6 from below, and the vertical gap between the pump stand 4 and the base frame 6 is further increased. It never expands in size. As a result, the elongation of the vibration isolator 5 is restricted, and excessive deformation of the vibration isolator 5 to avoid damage or breakage is avoided. Moreover, since excessive load is prevented from being applied to the pump connecting member (pipe, bellows), damage to the pump connecting member can be prevented. Furthermore, since the pump 3 is prevented from coming into contact with the device housing 1A and other pump peripheral members, it is possible to prevent damage to the pump 3 and peripheral members due to contact. Thus, the pump support mechanism 2 does not require parts such as fixing brackets for fixing the pump 3 to the base frame 6 side during pump transportation.

When the pump 3 installed at the pump installation location is in operation, the bolt 9 (stopper) attached to the boss 7 is positioned downwardly away from the frame rear surface 64 of the base frame 6 and does not come into contact with the frame rear surface 64. . Therefore, the function of suppressing vibration noise due to elastic deformation of the rubber vibration isolator 5 is not hindered.

(Another example of pump support mechanism)
In the pump support mechanism 2 described above, the boss 7 is fixed on the pump mount 4 side, and the boss hole 8 is formed on the base frame 6 side. Conversely, the boss 7 may be fixed on the base frame 6 side and the boss hole 8 may be formed on the pump mount 4 side. FIG. 3 shows a pump support mechanism 2A having this configuration, and portions corresponding to the portions of the pump support mechanism 2 described above are denoted by the same reference numerals.

As shown in FIG. 3, the lower end portion 72 of the boss 7 is attached to the frame top plate portion 61 of the base frame 6 in the pump support mechanism 2A. A boss hole 8 is formed in a bottom plate portion defining a bottom surface 43 of the leg portion 42 of the pump mount 4 . An upper end portion 71 of the boss 7 extending upward from the side of the base frame 6 penetrates the boss hole 8 with play and extends upward. A bolt 9 that functions as a stopper is attached to the upper end portion 71 . The pump support mechanism 2A having this configuration also provides the same effects as the pump support mechanism 2 described above.

Claims

A pump support mechanism in which a pump mount on which a pump is mounted is supported by a base frame via anti-vibration rubber,
A gap dimension in the vertical direction between the pump stand and the base frame in which the anti-vibration rubber is sandwiched and spanned between the pump stand and the base frame at a position different from the anti-vibration rubber. is equipped with a regulating member that regulates the
The regulation member is
A boss extending vertically,
a stopper attached to the boss;
and
The boss
an attachment end attached to a member of one of the pump cradle and the base frame;
a protruding end penetrating a boss hole formed in the other member of the pump mount and the base frame with play and protruding in a direction opposite to the one member;
and
The pump support mechanism, wherein the stopper is attached to the protruding end of the boss so as to be engaged with the other member when the gap dimension widens to the set dimension.
The stopper is a bolt that is coaxially screwed into a screw hole that opens in the end face of the protruding end of the boss, and
2. The pump support mechanism according to claim 1, wherein the outer diameter of the head of said bolt is larger than the diameter of said boss hole.
the one member is the pump mount and the other member is the base frame;
the protruding end of the boss penetrates the boss hole and protrudes toward the rear surface of the base frame,
2. The stopper according to claim 1, wherein the mounting position of the stopper with respect to the protruding end of the boss is set so that the stopper engages with the rear surface of the frame from below when the gap dimension widens to the set dimension. Pump support mechanism.
the one member is the base frame and the other member is the pump mount;
The protruding end of the boss penetrates the boss hole and protrudes toward the top surface of the pump pedestal,
The stopper is attached to the projecting end of the boss,
2. The stopper according to claim 1, wherein the mounting position of the stopper with respect to the protruding end of the boss is set so that the stopper engages with the top surface of the gantry from above when the gap dimension is widened to the set dimension. Pump support mechanism.
An upper shaft member coaxially attached to the upper end surface of the vibration isolator and a lower shaft member coaxially attached to the lower end surface of the antivibration rubber,
2. A pump support mechanism according to claim 1, wherein said upper shaft member is attached to said pump cradle and said lower shaft member is attached to said base frame.
a pump;
a pump support mechanism that supports a pump mount on which the pump is mounted by a base frame via anti-vibration rubber;
and
A pump device, wherein the pump support mechanism is the pump support mechanism according to any one of claims 1 to 5.