Mobile electric motor fixing device

Abstract

The present invention enables the stable movement and transport of an electric motor from the facility floor to a workspace; A movable motor fixing device is provided, comprising: a fixing bracket provided on both sides of a motor body and each having a pair of fixing holes spaced apart; vibration damping members fixed to the floor of a facility and configured to absorb and offset vibration energy by forming elastic force on their own; and a support plate positioned between the vibration damping members and the fixing bracket, which is secured to the vibration damping members and the fixing bracket through a fixing bolt, having front fastening holes positioned to align with the vibration damping members and through which the fixing bolt passes, and rear fastening holes formed to align with the fixing holes and the fastening nuts of the vibration damping members and through which the fixing bolt passes, and intermediate fastening holes formed between the front fastening holes and the rear fastening holes, which are positioned to align with the fixing holes and through which the fixing bolt passes, and having bent pieces formed by being bent downward at both ends to prevent excessive lateral movement while the vibration damping members are caught.

Description

Technology Field

[0001] The present invention relates to a movable motor fixing device that not only installs and fixes an electric motor to a facility floor, but also absorbs vibration energy generated from the motor to prevent it from being transmitted to surrounding structures, thereby preventing noise, cracks, and structural damage.

[0002] Specifically, the invention relates to a movable motor fixing device designed to maximize workability by stably mounting the motor to equipment or facilities, and by improving the convenience of moving and transporting the motor from the facility floor during disassembly and maintenance of the motor. Background Technology

[0003] Generally, electric motors used in home appliance fields such as air conditioners, boilers, and treadmills, or in industrial facility fields such as generator cooling systems and heavy-duty motor maintenance sites, are secured using a fixing method that incorporates a 'vibration-damping structure' to absorb vibration energy generated by the motor onto the facility floor and prevent it from being transmitted to surrounding structures, thereby reducing noise and improving durability.

[0004] At this time, the applied 'vibration-damping structure' is configured to include vibration-damping members such as vibration-damping rubber, vibration-damping pads, coil springs, and mounting pads for absorbing and blocking vibrations generated during motor operation, and a mechanism for fastening the vibration-damping members while they are positioned between the motor and the facility floor.

[0005] One such example is Korean Patent Registration No. 10-1440262 (Title: Fastening Structure for Anti-vibration Pads for Electric Motors / Published September 19, 2014), and as disclosed in the publication, regarding a fastening structure for first and second anti-vibration pads installed between the front and rear of an electric motor and a base plate, first and second contact surfaces are formed with a step difference on the lower front and rear of the electric motor housing so that the first and second anti-vibration pads are in close contact, a plurality of first and second supporting fastening holes are formed on the surfaces of the first and second contact surfaces, and first and second head seating holes corresponding to the first and second supporting fastening holes are formed on the surfaces of the first and second anti-vibration pads so that first and second supporting bolts are fastened, and first and second head seating protrusions are formed along the edges of the first and second head seating holes; The above-described base plate has a front support portion and a rear support portion formed protruding upward at the front and rear ends of the base plate portion, so that the lower half of the front and rear sides of the electric motor housing are in close contact, and the front support portion and the rear support portion have first and second seating holes formed corresponding to the positions of the first and second support bolts, so that the first and second head seating protrusions of the first and second anti-vibration pads are inserted therein, and an anti-vibration pad fastening structure is described.

[0006] In addition, Korean Utility Model Registration No. 20-0456994 (Title: Vibration Absorbing Device for Motor / Published Dec. 02, 2011.) describes a vibration absorbing device comprising, as disclosed in the publication, a substrate having a through hole formed in the center, a clamping piece that fixes both sides of the motor by bending both sides of the substrate upward, a vibration absorbing pad having a projection protruding downward from the bottom surface of the substrate; a coil spring coupled to the projection; and a support member that fixes the vibration absorbing pad integrally to the boiler body by fastening a piece with a cap attached that is inserted into the through hole.

[0007] Meanwhile, Korean Utility Model Registration No. 20-0328629 (Title: Vibration prevention unit for a motor for a generator cooling tool / Published September 29, 2003.) describes a vibration prevention unit comprising a combination of a support plate that supports a motor that draws out cooling water from the cooling tool side and supplies it to the generator side while the support plate is placed on a stage, a mounting pad that is fixed to the stage while the support plate is placed on it and blocks vibration waves output from the motor, and a coupling device that is interposed between the support plate and the mounting pad and fixes the support plate to the mounting pad.

[0008] In addition, Korean Patent Registration No. 10-0365917 (Title: Electric Motor / Published Dec. 26, 2002.) describes an electric motor having a housing in which a stator and a rotor are housed and a rotating shaft extending outward from the housing, as disclosed in the publication, comprising: a support member mounted on the outer wall of the housing; and a vibration damping member coupled to the support member and in contact with a predetermined motor mounting portion. Prior art literature

[0009] Korean Patent Registration No. 10-1440262 (Published Sep. 19, 2014) Korean Utility Model Registration No. 20-0456994 (Published Dec. 02, 2011) Korean Utility Model Registration No. 20-0328629 (Published Sep. 29, 2003) Korean Patent Registration No. 10-0365917 (Published Dec. 26, 2002) The problem to be solved

[0010] However, the conventional motors and their fixing structures described above are designed to be fixed and released by bolting a fixing bracket provided on the motor to the upper part of a vibration-damping member fixed to the facility floor. Therefore, when replacing or repairing the motor, the motor must be unbolted from the vibration-damping member and lifted out to perform the work, which resulted in poor workability when the facility floor of the motor is narrow or consists of a partially enclosed space.

[0011] In other words, when the motor body, separated from the anti-vibration member, is lifted by a worker or a separate lift and moved to an external workspace, there was a problem where workability was reduced due to the self-weight of the motor, which is a heavy object.

[0013] The present invention is proposed to solve the aforementioned conventional problems. The objective of the present invention is to provide a movable motor fixing device that maximizes workability by installing and fixing an electric motor to the facility floor, absorbing vibration energy generated by the motor to prevent it from being transmitted to surrounding structures, thereby preventing noise, cracks, and structural damage, and, in particular, stably mounting the motor to the facility floor (equipment or facility), and stably moving and transporting the motor from the facility floor to the workspace during disassembly and maintenance, thereby improving work convenience. means of solving the problem

[0014] A movable electric motor fixing device according to the present invention for achieving the above-described objective of the present invention comprises: a fixing bracket provided on both sides of an electric motor body and each having a pair of fixing holes spaced apart; vibration damping members fixed to a facility floor and configured to absorb and offset vibration energy by forming elastic force on their own; and a support plate disposed between the vibration damping members and the fixing bracket, which is secured to the vibration damping members and the fixing bracket respectively through fixing bolts, having front fastening holes arranged to align with the damping members at the front and through which the fixing bolts pass and secure, rear fastening holes formed arranged to align with the fixing holes and the fastening nuts of the vibration damping members at the rear and through which the fixing bolts pass and secure, intermediate fastening holes formed between the front fastening holes and the rear fastening holes arranged to align with the fixing holes and through which the fixing bolts pass and secure, and having bent pieces formed by being bent downward at both ends to prevent excessive lateral movement while the vibration damping members are caught. The spacing (PL) of the above-mentioned bending pieces is formed to a length such that the vibration damping members are positioned on the inner side of the rotational track (PC) during the horizontal rotational movement of the support plate; and the width (BW) of the above-mentioned fixing bracket is formed to a size smaller than the spacing (VW) of the outer sides of the vibration damping members that are respectively fastened to the front fastening hole and the rear fastening hole. Effects of the invention

[0015] The movable motor fixing device according to the present invention, constructed in this manner, has the effect of stably fixing the motor body on the upper side of the vibration-damping member by fastening the fixing bolt to the inner side of the upper side of the vibration-damping member through the fixing bolt, after the vibration-damping member is secured and positioned on the floor of the facility through a separate connecting element (anchor bolt, etc.) and the support plate is secured through the front and rear fastening holes of the support plate. Then, the fixing bracket of the motor body, the support plate, and the vibration-damping member are simultaneously and integrally fastened through the rear fastening holes of the support plate using a fixing bolt.

[0016] In addition, when replacing or repairing the motor body, if the fixing bolts fastened to the front and rear fastening holes are released, the support plate can move linearly and rotate relative to the anti-vibration member, thereby enabling the motor body to be stably moved from the fixed facility space to the workspace outside through the linear and rotational movements of the support plate, which has the effect of improving workability.

[0017] At this time, the motor body is maintained in a state of being connected to the support plate through intermediate fastening holes and fixing bolts, thereby having the effect of enabling integrated movement.

[0018] In addition, the vibration load generated by the electric motor is stably offset not only by the vibration isolation member but also by the support plate, thereby maximizing the effect of vibration reduction. Brief explanation of the drawing

[0019] FIG. 1 is a schematic illustration showing a movable motor fixing device according to one embodiment of the present invention. FIG. 2 is a schematic perspective view showing a support plate constituting a movable motor fixing device according to the present embodiment. FIG. 3 is a schematic example diagram showing the arrangement of a fixing bracket, a support plate, and a vibration damping member constituting a movable motor fixing device according to the present embodiment. FIG. 4 is a schematic example diagram showing a movable motor fixing device according to the present embodiment. FIGS. 5 to 7 are schematic perspective drawings showing the usage state of a movable motor fixing device according to the present embodiment. FIGS. 8 to 11 are schematic example diagrams showing auxiliary support means constituting a movable motor fixing device according to the present embodiment. Specific details for implementing the invention

[0020] Hereinafter, a movable motor fixing device according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0021] Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments described in detail below. These embodiments are provided to more fully explain the present invention to those with average knowledge in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize clearer explanations. It should be noted that in each drawing, identical components may be depicted with the same reference numeral. Detailed descriptions of known functions and configurations that are deemed to unnecessarily obscure the essence of the present invention are omitted.

[0022] FIGS. 1 to 7 are drawings showing a movable motor fixing device (1) according to an embodiment of the present invention. The movable motor fixing device (1) according to the present embodiment comprises: a fixing bracket (2) provided on both sides of a motor body (100) and each having a pair of fixing holes (21) spaced apart; vibration damping members (3) fixed to the floor of the facility and formed elastic force to absorb and offset vibration energy; and a support plate (5) disposed between the vibration damping members (3) and the fixing bracket (2) and fastened to the vibration damping members (3) and the fixing bracket (2) respectively through a fixing bolt (4).

[0023] That is, when the vibration damping members (3) are fixedly arranged and connected to the facility floor (200) through a separate connecting element (10), the support plate (5) is bolted to the upper part of the vibration damping member (3) through the fixing bolt (4), and then the motor body (100) is connected to the upper part of the support plate (5) through the fixing bracket (2) via the fixing bolt (4), thereby fixing the motor body (100) to the facility floor (200).

[0024] At this time, the vibration load generated in the 'electric motor' is stably offset through the above vibration damping member (3) and the above support plate (5), thereby maximizing vibration reduction.

[0026] In the above, the facility floor (200) can be formed as the surface of a ‘facility structure’ on which an electric motor is installed; depending on the field of application, a suitable facility structure can be selected and appropriately applied.

[0028] In the above, the fixed bracket (2) can be formed integrally with the ‘case’ constituting the motor body (100); the configuration and structure thereof may be appropriately applied according to the user's choice.

[0030] The above-described vibration damping member (3) may be composed of an ‘elastic structure’ that has a ‘base plate (31)’ at the bottom to which the coupling element (10) is fastened to the facility floor (200), and a ‘fastening nut (32) at the top to which the fixing bolt (4) is bolted, and which itself forms elongation and compression elastic force in the vertical direction.

[0031] That is, the above-mentioned anti-vibration member (3) can be elastically supported on the facility floor (200) and the support plate (5) through elongation and compression elasticity.

[0033] The above-mentioned anti-vibration member (3) can be formed by molding with a material of ‘rubber’; its composition and structure can be suitably applied according to the user’s choice.

[0035] In the movable motor fixing device (1) according to this embodiment, the support plate (5) is formed as a plate-shaped 'plate body' having a width, and each of the two ends is provided with a folded piece (51) that is folded downward and accommodates the anti-vibration member (3) placed on the lower side therein, thereby preventing excessive movement in the lateral direction by being caught during linear and rotational movements.

[0036] That is, while the support plate (5) moves in a straight line and rotates on the upper part of the anti-vibration member (3), the anti-vibration member (3) is made to perform a 'stopper' function between the bent pieces (51), so that it does not detach from the upper part of the anti-vibration member (3), thereby preventing the stability of use from being compromised.

[0038] Meanwhile, in the movable motor fixing device (1) according to the present embodiment, the support plate (5) is provided with front fastening holes (52) that are aligned with the fastening nuts (32) of the anti-vibration member (3) at the front and through which the fixing bolt (4) is fixed, and rear fastening holes (53) that are aligned with the fixing holes (21) and the fastening nuts (32) of the anti-vibration member (3) and through which the fixing bolt (4) is fixed are formed at the rear, and intermediate fastening holes (54) that are aligned with the fixing holes (21) of the fixing bracket (2) and through which the fixing bolt (4) is fixed are formed between the front fastening holes (52) and the rear fastening holes (53).

[0039] That is, between the above vibration damping member (3) and the above fixing bracket (2), the base plate (5) and the vibration damping member (3) are connected by bolt fastening through the above front fastening holes (52) and the above rear fastening holes (53); the base plate (5) and the above fixing bracket (2) are connected by bolt fastening through the above middle fastening holes (54) and the above rear fastening holes (53), and are assembled while connecting the above vibration damping member (3) and the above fixing bracket (2).

[0040] Accordingly, when moving the above-mentioned motor body (100) from the facility floor (200) to a replacement and repair workspace, the fixing bolts (4) fastened to the front fastening holes (52) and the rear fastening holes (53) are each released and separated, and the support plate (5) is separated from the vibration damping member (3), and the support plate (5) is moved while moving it in a linear and rotational motion, thereby stably performing the moving operation.

[0041] At this time, the motor body (100) is maintained in a state of being connected to the support plate (5) through the bolt connection of the intermediate connection hole (54), so that the support plate (5) moves in the same way during linear and rotational movements.

[0043] In the movable motor fixing device (1) according to the present embodiment, the spacing (PL) of the bending pieces (51) is formed such that the vibration damping members (3) are positioned on the inside of the rotation track (PC) during the horizontal rotational movement of the support plate (5).

[0044] That is, as illustrated in FIG. 7, the spacing (PL) of the bending pieces (51) is greater than the outermost length (VL) of the anti-vibration members (3) positioned diagonally opposite each other, so that when the support plate (5) rotates on the upper part of the anti-vibration member (3), the bending pieces (51) rotate in the same way while forming a stable rotational trajectory (PC), thereby ensuring operational stability.

[0046] In the movable motor fixing device (1) according to the present embodiment, the width (BW) of the fixing bracket (2) is made smaller than the gap (VW) between the outer sides of the anti-vibration members (3) that are respectively fastened to the front fastening hole (52) and the rear fastening hole (53), as shown in FIG. 3.

[0047] Through this, a clearance is formed between the front of the fixed bracket (2) and the front fastening hole (52), thereby ensuring the stability of the bolt fastening operation for the front fastening hole (62).

[0049] In the above, the difference length between the width (BW) of the fixed bracket (2) and the spacing (VW) of the outer sides of the vibration damping members (3) can be appropriately applied as a difference length selected by the user.

[0051] In the movable motor fixing device (1) according to the present embodiment as described above, an auxiliary support means (6) configured to roll while elastically supporting the facility floor (200), as shown in FIGS. 8 to 11, may be provided on the bottom surface of the support plate (5).

[0052] That is, the above auxiliary support means (6) elastically supports the support plate (5) with respect to the facility floor (200), and during the movement of the support plate (5), it rolls against the facility floor (200), thereby minimizing frictional resistance and allowing the movement to be performed more stably.

[0053] In addition, the vibration load transmitted to the support plate (5) can be elastically offset through the elastic support force of the auxiliary support means (6), thereby further increasing the vibration reduction efficiency.

[0055] In the above, the auxiliary support means (6) may include: an upper member (62) having a threaded rod (61) that is fixed to the bottom surface of the support plate (5) and has a length in the downward direction, as shown in FIG. 9; a lower member (65) having a binding hole (63) through which the threaded rod (61) passes, and rolling balls (64) that are rotatably provided to roll with respect to the facility floor (200) at the bottom; a binding nut (66) that is screw-fastened to the threaded rod (61); and an elastic member (67) that is provided between the upper member (62) and the lower member (65) and forms an elastic force that extends and compresses.

[0056] That is, the elastic member (67) is fitted into the lower part of the upper member (62), and the lower member (65) is screwed together through the screw rod (61) and the binding nut (66).

[0057] At this time, the lower member (65) is elastically supported through the elastic member (67) and is guided up and down through the screw rod (61) penetrating the binding hole (63), and the rolling ball (64) rolls against the facility floor (200) during the movement of the support plate (5).

[0058] Accordingly, the movement of the support plate (5) is made more stable.

[0060] In the above, the maximum elongation elastic pressure of the elastic member (67) can form a pressure that supports the load of the motor body (100).

[0061] That is, when the support plate (5) is released with respect to the anti-vibration member (3), a state is formed in which the support plate (5) does not excessively press the anti-vibration member (3) through the elastic support force of the elastic member (67), thereby minimizing frictional resistance between the support plate (5) and the anti-vibration member (3) during the movement of the support plate (5).

[0063] Meanwhile, the elastic member (67) of the above auxiliary support means (6) forms an elastic pressure that continuously raises the support plate (5).

[0064] Accordingly, the auxiliary support means (6) not only simply supports the support plate (5), but also applies a constant upward pressure (preload) to the entire fastening part with the fixing bolt (4).

[0065] As a result, regarding the problem of a small gap occurring in the screw fastening part of the fixing bolt (4) due to repeated vibration in response to the vibration load generated in the electric motor, if the elastic member (67) continuously applies upward pressure, the fastening part always maintains a constant compressed state, thereby reducing the possibility of loosening.

[0066] The elastic pressure of the above elastic member (67) acts like a kind of 'spring preload' to counteract the tendency of the above fixing bolt (4) to loosen slightly, thereby allowing the fastening force to be maintained at a constant level.

[0068] [Test Example] The following is a performance test of providing a continuous preload to the fastening portion of the fixing bolt (4) by the elastic member (67).

[0069] 1. Test conditions

[0070] Repeated vibration is applied to the bolt fastening part.

[0071] (1) Assemble the test support plate (5), the anti-vibration member (3), and the elastic member (67).

[0072] (2) Apply vibration frequency and amplitude to match the motor

[0073] (3) Record the initial tightening torque value

[0074] 2. Test before application of elastic member

[0075] Measuring the degree of bolt loosening without an elastic member

[0076] (1) Apply a vibration load for a certain period of time

[0077] (2) Measurement of tightening torque reduction rate (%)

[0078] (3) Record whether the fixing bolt has loosened

[0079] 3. Test after application of elastic member

[0080] The same test is performed while the elastic member continuously raises the support plate.

[0081] (1) Repeat test under the same vibration conditions

[0082] (2) Measurement of tightening torque reduction rate (%)

[0083] (3) Record whether the fixing bolt has loosened

[0084] 4. Data Comparison

[0085] Comparison of fastening force retention rates before and after the application of elastic members

[0086] (1) Torque reduction rate decreased from 30% before application to 10% after application

[0087] (2) Comparison of the number of times the fixing bolts loosened

[0088] (3) Performance improvement rate --> Loosening reduction rate 60~70%

[0089] It shows that compared to the case where the elastic member (67) is not present, the torque reduction rate is significantly reduced, and that when the torque is reduced by more than 30% in a general vibration test, the torque is reduced to less than 10% when the elastic member is applied, thereby showing that a screw loosening reduction effect of about 60~70% can be obtained.

[0091] The movable motor fixing device (1) according to the present embodiment, as described above, is characterized by a technical configuration in which the support plate (5) and the motor body (100) are integrated and fastened to the upper part of the anti-vibration member (3) through the fixing bolt (4) penetrating the front fastening holes (52), rear fastening holes (53), and intermediate fastening holes (54), thereby stably fixing the motor to the facility floor (200), and also allowing the support plate (5) to move in a straight line and rotational motion in a state where the connection between the anti-vibration member (3) and the support plate (5) is released, thereby allowing the motor to be easily moved from the facility floor (200) to a workspace.

[0093] The embodiment of the present invention described above is merely illustrative, and those skilled in the art will readily understand that various modifications and equivalent alternative embodiments are possible therefrom. Therefore, it will be understood that the present invention is not limited only to the forms mentioned in the above detailed description. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Furthermore, the present invention should be understood to include all modifications, equivalents, and substitutions within the spirit and scope of the present invention as defined by the appended claims. Explanation of the symbols

[0094] 1 : Motor fixing device 10 : Connecting element 100 : Electric motor body 200 : Facility floor 2 : Fixing bracket 21 : Fixing hole 3 : Vibration damping member 31 : Base plate 32 : Fastening nut 4 : Fixing bolt 5 : Support plate 51 : Folded piece 52 : Front fastening hole 53 : Rear fastening hole 54 : Intermediate fastening hole 6 : Auxiliary support means 61 : Screw rod 62 : Upper member 63 : Binding Ball 64 : Cloud Ball 65 : Lower member 66 : Binding nut 67 : Elastic member

Claims

Claim 1 A fixing bracket having a pair of fixing holes spaced apart on each side of the motor body; and vibration damping members fixed to the floor of the facility and configured to absorb and cancel out vibration energy by generating elastic force on their own; A support plate comprising: a support plate positioned between the vibration-damping members and the fixing bracket, and secured to the vibration-damping members and the fixing bracket respectively through fixing bolts, wherein front fastening holes are provided at the front so as to be aligned with the vibration-damping members and through which the fixing bolts pass and are fixed, and rear fastening holes are formed at the rear so as to be aligned with the fixing holes and the fastening nuts of the vibration-damping members and through which the fixing bolts pass and are fixed, and intermediate fastening holes are formed between the front fastening holes and the rear fastening holes so as to be aligned with the fixing holes and through which the fixing bolts pass and are fixed, and bent pieces are provided at both ends that are bent downward so as to prevent excessive lateral movement while the vibration-damping members are caught; wherein the spacing (PL) of the bent pieces is formed to a length such that the vibration-damping members are positioned inside the rotational track (PC) during the horizontal rotational movement of the support plate; and the width (BW) of the fixing bracket is formed such that, respectively, at the front fastening holes and the rear fastening holes A movable motor fixing device characterized by being formed with a size smaller than the gap (VW) between the outer sides of the above-mentioned vibration damping members.

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