CN111335353A

CN111335353A - Eccentric vibration silencing system of refrigerating unit of electromechanical equipment room

Info

Publication number: CN111335353A
Application number: CN202010150516.XA
Authority: CN
Inventors: 陈英俊; 陈荣荣; 谢立本; 陈小童
Original assignee: Zhaoqing University
Current assignee: Zhaoqing University
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-06-26
Anticipated expiration: 2040-03-06
Also published as: CN111335353B

Abstract

The invention discloses an eccentric vibration silencing system of a refrigerating unit of an electromechanical equipment room, which comprises a basic frame of the refrigerating unit and a concrete base layer, wherein the basic frame is arranged in a foundation pit of the concrete base layer; the basic frame consists of a lower frame, an upper frame, a machine set seat and a reinforcing frame; through the spring that inside set up, can absorb the unit seat when taking place eccentric oscillation, produce resonance easily, its syntony is under the setting of spring, absorb the produced energy of its resonance, in the within range of spring load, and through its processing resonance, cut off the propagation source of its vibration, remove first left board, the second left board, the position of first right board and second right board, and the pressure between the shock attenuation silencing device can produce the change, the spring can produce the deformation of different degrees simultaneously, utilize the deformation degree of adjusting spring, let its spring self elastic coefficient and the eccentric vibration frequency looks adaptation of refrigerating unit, can be through continuous regulation, let it keep the best amortization state all the time.

Description

Eccentric vibration silencing system of refrigerating unit of electromechanical equipment room

Technical Field

The invention relates to an eccentric vibration silencing system, in particular to an eccentric vibration silencing system of a refrigerating unit of an electromechanical equipment room.

Background

At present, electromechanical equipment rooms are widely applied to production and life. Along with the continuous deepening of the strategy of energy conservation and emission reduction, the requirement for replacing equipment of a central electromechanical equipment machine room system of a building is more and more, and because the central electromechanical equipment machine room system cannot stop running, and meanwhile, the size of equipment such as a refrigerating unit of the central electromechanical equipment machine room system is larger, the difficulty in replacing the central electromechanical equipment machine room system is larger. At present, large computer data switching centers, network services and network management systems all adopt electronic devices such as blade servers, network switches and the like with smaller size, higher speed and stronger functions, and the electronic devices are mostly applied in smaller and smaller spaces. Moreover, the equipment in a machine room is often compressed into a frame, so that the heat flux density of the equipment is greatly improved, and the silencing and damping measures are taken as key points and are selected at low rotating speed. In the efficient equipment, adopt the equipment that the eccentricity is less, reduce vibration and noise, arrange equipment simultaneously, the position that is quiet as far as possible, because the refrigerating unit all can produce the noise when the operation, the vibration can cause danger sometimes simultaneously, must carry out amortization and damping to these equipment, and the refrigerating unit mainly is compressor, motor and transformer etc. and its equipment is main power apparatus, and when the operation, holistic working strength is higher, produces eccentric vibration easily, brings the noise.

Disclosure of Invention

The invention aims to provide an eccentric vibration silencing system of a refrigerating unit of an electromechanical equipment room, which is in the range of spring load, cuts off the transmission source of vibration by processing resonance, moves the positions of a first left plate, a second left plate, a first right plate and a second right plate, changes the pressure between the damping silencing device and the spring, simultaneously enables the spring to generate deformation with different degrees, enables the elastic coefficient of the spring to be matched with the eccentric vibration frequency of the refrigerating unit by adjusting the deformation degree of the spring, and can solve the problems in the background technology by the advantage of continuous adjustment.

In order to achieve the purpose, the invention provides the following technical scheme: an eccentric vibration silencing system of a refrigerating unit of an electromechanical equipment room comprises a basic frame of the refrigerating unit and a concrete base layer, wherein the basic frame is arranged in a foundation pit of the concrete base layer;

the basic frame consists of a lower frame, an upper frame, a machine set seat and a reinforcing frame;

the refrigerator set comprises a refrigerator set seat, a refrigerating unit, a reinforcing frame, an upper frame, a refrigerating unit and a refrigerating unit, wherein the refrigerator set seat is arranged on the refrigerator set seat;

a unit seat and a connected damping and silencing device are further arranged in the lower frame, and the damping and silencing device is used for eliminating noise generated by the refrigerating unit under eccentric vibration;

the bottom of unit seat still installs the elasticity adjustment mechanism who meets with the unit seat, elasticity adjustment mechanism is used for adjusting the elasticity degree between unit seat and the shock attenuation silencing device.

Further, the lower frame comprises an outer left plate, an inner right plate, an outer right plate and a middle plate, wherein the bottom ends of the outer left plate, the inner right plate, the outer right plate and the middle plate are inserted into a foundation pit of the concrete base layer and are tamped in a vibration mode;

the outer left plate, the inner right plate, the outer right plate and the middle plate are arranged in parallel, the top ports of the outer left plate, the middle plate and the outer right plate are flush, the top ports of the inner left plate and the inner right plate are flush, and the bottom ends of the inner left plate, the inner right plate and the middle plate which are arranged are lower than the bottom horizontal plane of the outer left plate and the bottom horizontal plane of the outer right plate.

Further, the enhancement frame includes left swash plate and right swash plate, and the junction at concrete-based layer and interior left board is supported to the one end of left swash plate, and the other end of left swash plate is connected with the one side of medium plate, and the junction at concrete-based layer and outer right board is supported to the one end of right swash plate, and the other end of right swash plate is connected with the another side of medium plate.

Furthermore, the upper frame comprises a left transverse plate and a right transverse plate, the center end of the left transverse plate is supported by the top end of the inner left plate, the two ends of the left transverse plate are respectively connected to the side walls of the outer left plate and the middle plate, the center end of the right transverse plate is supported by the top end of the inner right plate, the two ends of the right transverse plate are respectively connected to the side walls of the outer right plate and the middle plate, and a damping and silencing device is fixed on the outer walls of the outer left plate, the outer right plate and the middle plate above the left transverse plate and the right transverse plate.

Further, the unit base comprises a base plate, a slide rail, a first left plate, a second left plate, a first right plate and a second right plate, wherein a clamping groove matched with the refrigerator is machined in the base plate and used for accommodating the refrigerator and is fixed with the refrigerator through bolts, and the slide rail is fixed at the bottom of the base plate and arranged along the length direction of the center;

the top ends of the first left plate, the second left plate, the first right plate and the second right plate are mounted on a sliding rail and slide on the sliding rail, the first left plate and the second left plate are inserted into a groove formed by the outer left plate and the middle plate, the bottom ends of the first left plate and the second left plate are in contact with the upper surface of the left transverse plate, the outer walls of the first left plate and the second left plate are in contact with the damping and silencing device, and the tightness debugging mechanism is arranged between the first left plate and the second left plate and used for adjusting the tightness degree between the first left plate and the damping and silencing device and between the second left plate and the damping and silencing device;

in first right board and the right board of second inserted the recess that outer right board and medium plate formed, the outer wall of first right board and the right board of second contacted with shock attenuation silencing device, elasticity adjustment mechanism sets up between first right board and the right board of second for adjust the elasticity degree between first right board and the right board of second and shock attenuation silencing device.

Furthermore, the damping and silencing device comprises an inner plate, an outer plate, an upper L plate, a lower L plate and springs, wherein the inner plate is used for being connected with the surfaces of the outer left plate, the outer right plate and the middle plate;

the upper L plate and the lower L plate are respectively and correspondingly fixed at two ends of the inner plate and the outer plate, and ports of the upper L plate and the lower L plate are mutually buckled together.

Further, the elasticity debugging mechanism includes first sleeve, the second sleeve, screw rod and snap ring, and the snap ring is fixed at first sleeve and second telescopic, and the snap ring that first sleeve and second sleeve and both ends were passed respectively at the both ends of screw rod meshes mutually, and two elasticity debugging mechanisms are located respectively between first left board and the second left board and between first right board and the second right board, and the first sleeve and the second sleeve of every group support respectively on the inner wall of first left board and second left board and first right board and second right board to the snap ring inserts first left board and, the second left board, first right board and the interior activity of second right board.

Further, processing the annular groove that supplies the snap ring embedding on first left board, second left board, first right board and the right board of second, the snap ring is at the annular inslot internal rotation and does not break away from, and first sleeve and second sleeve move on the screw rod, drive first left board, second left board, first right board and the right board of second and move at the slide rail.

Furthermore, through holes communicated with the ring grooves are further processed in the first left plate, the second left plate, the first right plate and the second right plate, and the through holes are used for the penetration of the screw rods.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the eccentric vibration silencing system for the refrigerating unit of the electromechanical equipment room, the concrete base layer is separated from a building by immersing the part of the base frame embedded into the concrete base layer with asphalt, and when the refrigerator generates eccentric vibration, a vibration damping layer formed by raw cork can damp the vibration and prevent sound waves from being transmitted by using solids; the gap between the lower frame and the damping layer is filled with concrete, and when the refrigerating unit eccentrically vibrates, the vibration generated by the refrigerating unit does not influence the stability of the base frame.

2. The eccentric vibration silencing system for refrigerating unit in electromechanical equipment room has the advantages that the spring arranged inside the system can absorb the energy generated by the resonance of the unit seat when eccentric vibration occurs, and the transmission source of the vibration is cut off by the resonance of the unit seat in the range of the load of the spring and the treatment of the resonance in the spring.

3. This eccentric vibration noise cancelling system of refrigerating unit of electromechanical device computer lab, remove first left board, the second left board, the position of first right board and second right board, and the pressure between the damping silencing device can produce the change, the spring can produce the deformation of different degrees simultaneously, utilize regulating spring's deformation degree, let the elastic coefficient of its spring self and the eccentric vibration frequency looks adaptation of refrigerating unit, in long-time use, can be through continuous regulation, let it keep the best amortization state all the time.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a diagram of the basic framework of the present invention;

FIG. 3 is a view of the connection of the lower frame, the upper frame and the reinforcing frame of the present invention;

FIG. 4 is a perspective view of the block of the present invention;

FIG. 5 is a normal state view of the shock absorbing and noise attenuating apparatus of the present invention;

FIG. 6 is a view of the shock absorbing and noise deadening device of the present invention in a compressed state;

FIG. 7 is a block diagram of the present invention;

FIG. 8 is a block diagram of the interior of the unit base of the present invention;

FIG. 9 is an exploded view of the slack adjuster mechanism of the present invention;

fig. 10 is an overall configuration diagram of the slack adjuster according to the present invention.

In the figure: 1. a base frame; 11. a lower frame; 111. an outer left panel; 112. an inner left panel; 113. an inner right plate; 114. an outer right plate; 115. a middle plate; 12. an upper frame; 121. a left cross plate; 122. a right cross plate; 13. a unit seat; 131. a base plate; 132. a slide rail; 133. a first left plate; 134. a second left plate; 135. a first right plate; 136. a second right plate; 14. a reinforcing frame; 141. a left sloping plate; 142. a right sloping plate; 2. a shock-absorbing and silencing device; 21. an inner plate; 22. an outer plate; 23. an upper L plate; 24. a lower L plate; 25. a spring; 3. a tightness adjusting mechanism; 31. a first sleeve; 32. a second sleeve; 33. a screw; 34. a snap ring.

Detailed Description

The technical scheme in the embodiment of the invention will be made clear below by combining the attached drawings in the embodiment of the invention; fully described, it is to be understood that the described embodiments are merely exemplary of some, but not all, embodiments of the invention and that all other embodiments, which can be derived by one of ordinary skill in the art based on the described embodiments without inventive faculty, are within the scope of the invention.

Referring to fig. 1, an eccentric vibration silencing system for a refrigerating unit of an electromechanical equipment room comprises a base frame 1 and a concrete base layer of the refrigerating unit, wherein the base frame 1 is installed in a foundation pit of the concrete base layer, a joint of the base frame 1 and the concrete base layer is filled with raw cork, the raw cork is a vibration-damping base, the concrete base layer and a building are separated by immersing a part of the base frame 1 embedded in the concrete base layer with asphalt, and when the refrigerating machine generates eccentric vibration, a vibration damping layer formed by the raw cork can damp the vibration and prevent sound waves from being transmitted by using solids.

In another embodiment, raw cork is changed into a rubber liner which is used as a damping material, is easy to mold, has high elasticity and low cost, and vulcanized rubber with a certain thickness is made into a required shape and then is used as a pressure reduction element and placed on a refrigerating unit to serve as a damping layer.

The foundation frame 1 consists of a lower frame 11, an upper frame 12, a unit seat 13 and a reinforcing frame 14, and the foundation frame 1; the reinforcing frame 14 is arranged in the lower frame 11 and used for supporting the lower frame 11, the upper frame 12 is arranged at the top of the lower frame 11, the unit seat 13 is clamped and fixed by the upper frame 12 and the lower frame 11, and the refrigerating unit is fixed on the unit seat 13; a unit seat 13 and a connected damping and silencing device 2 are further arranged in the lower frame 11, and the damping and silencing device 2 is used for eliminating noise generated by the refrigerating unit under eccentric vibration; the bottom of the unit base 13 is also provided with a tightness adjusting mechanism 3 connected with the unit base 13, and the tightness adjusting mechanism 3 is used for adjusting the tightness between the unit base 13 and the damping and silencing device 2.

Referring to fig. 2, the lower frame 11 includes an outer left plate 111, an inner left plate 112, an inner right plate 113, an outer right plate 114, and a middle plate 115, bottom ends of the outer left plate 111, the inner left plate 112, the inner right plate 113, the outer right plate 114, and the middle plate 115 are inserted into a foundation pit of a concrete foundation layer, and are vibration-tamped, after the foundation pit is first formed in the concrete foundation layer for the outer left plate 111, the inner left plate 112, the inner right plate 113, the outer right plate 114, and the middle plate 115 to be inserted into, a vibration-damping layer is placed in the foundation pit to clamp the outer left plate 111, the inner left plate 112, the inner right plate 113, the outer right plate 114, the middle plate 115, and then concrete is poured and tamped, and gaps between the outer left plate 111, the inner left plate 112, the inner right plate 113, the outer right plate 114, and the middle plate 115 are filled with concrete, and the vibration-damping layer is generated when the refrigerating unit vibrates eccentrically.

Outer left plate 111, interior left plate 112, interior right plate 113, outer right plate 114 and middle plate 115 are parallel to each other and set up, and the top port of outer left plate 111, middle plate 115 and outer right plate 114 flushes, the top port of interior left plate 112 and interior right plate 113 flushes, and through the interior left plate 112 that sets up, the bottom of interior right plate 113 and middle plate 115 is less than the bottom horizontal plane of outer left plate 111 and outer right plate 114, utilize the difference in height that produces, can form the structure that supplies upper frame 12 to insert, and the outstanding of both sides, can use with upper frame 12 cooperation, when unit seat 13 inserts, the pressure that both sides produced, can let unit seat 13 more stable.

The reinforcing frame 14 includes a left inclined plate 141 and a right inclined plate 142, one end of the left inclined plate 141 is abutted to the joint of the concrete base layer and the inner left plate 112, the other end of the left inclined plate 141 is connected to one surface of the middle plate 115, one end of the right inclined plate 142 is abutted to the joint of the concrete base layer and the outer right plate 114, the other end of the right inclined plate 142 is connected to the other surface of the middle plate 115, the left inclined plate 141 and the right inclined plate 142 are symmetrically distributed with the middle plate 115 as the center, the left inclined plate 141 and the right inclined plate 142 are arranged at the bulge by using the height difference of the concrete base layer, the direction of the supporting force is just aligned to the middle plate 115, and the bottom of.

Referring to fig. 3, the upper frame 12 includes a left lateral plate 121 and a right lateral plate 122, a center end of the left lateral plate 121 is supported by a top end of the inner left plate 112, two ends of the left lateral plate 121 are respectively connected to opposite side walls of the outer left plate 111 and the middle plate 115, a center end of the right lateral plate 122 is supported by a top end of the inner right plate 113, two ends of the right lateral plate 122 are respectively connected to opposite side walls of the outer right plate 114 and the middle plate 115, the outer walls of the outer left plate 111, the outer right plate 114 and the middle plate 115 above the left lateral plate 121 and the right lateral plate 122 are fixed with the vibration damping and noise reduction device 2, and the left lateral plate 121 and the right lateral plate 122 are horizontal to support the.

Referring to fig. 4, the base 13 includes a base plate 131, a slide rail 132, a first left plate 133, a second left plate 134, a first right plate 135 and a second right plate 136, a slot adapted to a refrigerator is formed in the base plate 131 for accommodating the refrigerator, and is fixed to the refrigerator by a bolt, the refrigerator is correspondingly inserted into the base plate 131, after the refrigerator is fixed, no gap is generated, the base plate 131 can be just connected to the top ends of the outer left plate 111, the outer right plate 114 and the middle plate 115, and the slide rail 132 is fixed to the bottom of the base plate 131 and is disposed along the length direction of the center.

Referring to fig. 5, the top ends of the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 are mounted on the slide rail 132 and slide on the slide rail 132, the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 slide back and forth on the slide rail 132, the first left plate 133 and the second left plate 134 are inserted into the grooves formed by the outer left plate 111 and the middle plate 115, the bottom ends of the first left plate 133 and the second left plate 134 contact with the upper surface of the left cross plate 121, the first left plate 133 and the second left plate 134 are supported by the left cross plate 121, the outer walls of the first left plate 133 and the second left plate 134 contact with the damping and noise attenuating device 2, the damping and noise attenuating device 2 contacts the first left plate 133 and the second left plate 134, the tightness adjusting mechanism 3 is disposed between the first left plate 133 and the second left plate 134 for adjusting the tightness between the first left plate 133 and the second left plate 134 and the damping and noise attenuating device 2, meanwhile, the tightness of contact between the first left plate 133 and the second left plate 134 and the shock-absorbing and silencing device 2 is adjusted by the tightness adjusting mechanism 3.

Referring to fig. 6, the first right plate 135 and the second right plate 136 are inserted into the groove formed by the outer right plate 114 and the middle plate 115, the outer walls of the first right plate 135 and the second right plate 136 are in contact with the damping and silencing device 2, the tightness adjusting mechanism 3 is disposed between the first right plate 135 and the second right plate 136 for adjusting the tightness between the first right plate 135 and the second right plate 136 and the damping and silencing device 2, and similarly, the tightness adjusting mechanism 3 is used for adjusting the tightness between the first right plate 135 and the second right plate 136 and the damping and silencing device 2, and the setting of the tightness controls the initial state of the spring 25 to be in a compressed state, a normal state or a pulled state.

Referring to fig. 7-8, the shock absorbing and noise reducing device 2 includes an inner plate 21, an outer plate 22, an upper L plate 23, a lower L plate 24 and springs 25, wherein the inner plate 21 is used for connecting with the surfaces of an outer left plate 111, an outer right plate 114 and a middle plate 115, the outer plate 22 is used for connecting with the surfaces of a first left plate 133, a second left plate 134, a first right plate 135 and a second right plate 136, and the inner plate 21 and the outer plate 22 are connected through a plurality of uniformly distributed springs 25; the upper L plate 23 and the lower L plate 24 are respectively and correspondingly fixed on two ends of the inner plate 21 and the outer plate 22, the ports of the upper L plate 23 and the lower L plate 24 are buckled with each other, the inner plate 21 and the outer plate 22 are not separated due to the structure that the upper L plate 23 and the lower L plate 24 are buckled with each other, the spring 25 arranged in the inner part can absorb the resonance easily generated when the eccentric vibration occurs on the unit seat 13, the resonance property absorbs the energy generated by the resonance under the arrangement of the spring 25, and the transmission source of the vibration is cut off in the range of the load of the spring 25 by processing the resonance.

Referring to fig. 9-10, the slack adjuster mechanism 3 includes a first sleeve 31, a second sleeve 32, a screw 33 and a snap ring 34, the snap ring 34 is fixed on the first sleeve 31 and the second sleeve 32, two ends of the screw 33 respectively penetrate through the first sleeve 31 and the second sleeve 32 to engage with the snap ring 34 at the two ends, through holes communicated with ring grooves are further processed in the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 for the screw 33 to penetrate through, the two slack adjusters 3 are respectively located between the first left plate 133 and the second left plate 134 and between the first right plate 135 and the second right plate 136, the first sleeve 31 and the second sleeve 32 of each set respectively abut against inner walls of the first left plate 133 and the second left plate 134 and the first right plate 135 and the second right plate 136, and the snap ring 34 is inserted into the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136, the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 are provided with annular grooves for the snap rings 34 to be inserted, the snap rings 34 can not be separated in the annular grooves, the first sleeve 31 and the second sleeve 32 can move on the screw 33 to drive the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 to move on the slide rail 132, the snap rings 34 can rotate in the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 but can not be separated, in this way, the first sleeve 31 and the second sleeve 32 are rotated to control the screw 33 to be not rotated, the first sleeve 31 and the second sleeve 32 can move on the screw 33 during rotation, so as to drive the positions of the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136, the pressure between the positions of the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 and the damping device 2 can be changed, meanwhile, the spring 25 can generate deformation of different degrees, the self elastic coefficient of the spring 25 is matched with the eccentric vibration frequency of the refrigerating unit by adjusting the deformation degree of the spring 25, and the spring can be kept in the optimal silencing state all the time through continuous adjustment in long-time use.

In summary, the following steps: according to the eccentric vibration silencing system for the refrigerating unit of the electromechanical equipment room, the concrete base layer is separated from a building by immersing the part of the base frame 1 embedded into the concrete base layer with asphalt, and when the refrigerating machine generates eccentric vibration, the vibration can be weakened by the vibration reduction layer formed by raw cork, so that the transmission of sound waves by utilizing solids is prevented; the gap between the lower frame 11 and the damping layer is filled with concrete, and when the refrigerating unit eccentrically vibrates, the generated vibration does not influence the stability of the base frame 1; the spring 25 arranged inside can absorb the eccentric vibration of the unit seat 13, the resonance is easy to generate, the resonance property absorbs the energy generated by the resonance under the arrangement of the spring 25, the transmission source of the vibration is cut off by processing the resonance within the range of the load of the spring 25, the positions of the first left plate 133, the second left plate 134, the first right plate 135 and the second right plate 136 are moved, the pressure between the first left plate 135 and the damping and silencing device 2 can be changed, meanwhile, the spring 25 can generate deformation with different degrees, the self elastic coefficient of the spring 25 is matched with the eccentric vibration frequency of the refrigerating unit by adjusting the deformation degree of the spring 25, and the optimal silencing state can be kept through continuous adjustment in long-term use.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment machine room is characterized by comprising a basic frame (1) of the refrigerating unit and a concrete base layer, wherein the basic frame (1) is arranged in a foundation pit of the concrete base layer;

the foundation frame (1) consists of a lower frame (11), an upper frame (12), a unit seat (13) and a reinforcing frame (14);

the reinforcing frame (14) is arranged in the lower frame (11) and used for supporting the lower frame (11), the upper frame (12) is arranged at the top of the lower frame (11), the unit seat (13) is clamped and fixed by the upper frame (12) and the lower frame (11), and the refrigerating unit is fixed on the unit seat (13);

a unit seat (13) and a connected damping and silencing device (2) are further arranged in the lower frame (11), and the damping and silencing device (2) is used for eliminating noise generated by the refrigerating unit under eccentric vibration;

the tightness adjusting mechanism (3) connected with the unit seat (13) is further installed at the bottom of the unit seat (13), and the tightness adjusting mechanism (3) is used for adjusting the tightness degree between the unit seat (13) and the damping and silencing device (2).

2. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the lower frame (11) comprises an outer left plate (111), an inner left plate (112), an inner right plate (113), an outer right plate (114) and a middle plate (115), and the bottom ends of the outer left plate (111), the inner left plate (112), the inner right plate (113), the outer right plate (114) and the middle plate (115) are inserted into a foundation pit of the concrete base layer and are vibrated and tamped;

the outer left plate (111), the inner left plate (112), the inner right plate (113), the outer right plate (114) and the middle plate (115) are arranged in parallel, the top ports of the outer left plate (111), the middle plate (115) and the outer right plate (114) are flush, the top ports of the inner left plate (112) and the inner right plate (113) are flush, and the bottom ends of the inner left plate (112), the inner right plate (113) and the middle plate (115) are lower than the bottom end horizontal planes of the outer left plate (111) and the outer right plate (114).

3. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: strengthen frame (14) including left swash plate (141) and right swash plate (142), the junction at concrete-based layer and interior left board (112) is supported to the one end of left swash plate (141), and the other end of left swash plate (141) is connected with the one side of medium plate (115), and the junction at concrete-based layer and outer right board (114) is supported to the one end of right swash plate (142), and the other end of right swash plate (142) is connected with the another side of medium plate (115).

4. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the upper frame (12) comprises a left transverse plate (121) and a right transverse plate (122), the center end of the left transverse plate (121) is supported by the top end of the inner left plate (112), two ends of the left transverse plate (121) are respectively connected to the opposite side walls of the outer left plate (111) and the middle plate (115), the center end of the right transverse plate (122) is supported by the top end of the inner right plate (113), two ends of the right transverse plate (122) are respectively connected to the opposite side walls of the outer right plate (114) and the middle plate (115), and the outer left plate (111), the outer right plate (114) and the middle plate (115) above the left transverse plate (121) and the right transverse plate (122) are fixed with the damping and silencing device (2).

5. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the unit seat (13) comprises a base plate (131), a sliding rail (132), a first left plate (133), a second left plate (134), a first right plate (135) and a second right plate (136), wherein a clamping groove matched with a refrigerator is machined in the base plate (131) and used for accommodating the refrigerator and fixed with the refrigerator through bolts, and the sliding rail (132) is fixed at the bottom of the base plate (131) and arranged along the length direction of the center;

the top ends of the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136) are mounted on a sliding rail (132) and slide on the sliding rail (132), the first left plate (133) and the second left plate (134) are inserted into a groove formed by the outer left plate (111) and the middle plate (115), the bottom ends of the first left plate (133) and the second left plate (134) are in contact with the upper surface of the left transverse plate (121), the outer walls of the first left plate (133) and the second left plate (134) are in contact with the damping and silencing device (2), and the tightness adjusting mechanism (3) is arranged between the first left plate (133) and the second left plate (134) and used for adjusting the tightness degree between the first left plate (133) and the second left plate (134) and the damping and silencing device (2);

the first right plate (135) and the second right plate (136) are inserted into grooves formed by the outer right plate (114) and the middle plate (115), the outer walls of the first right plate (135) and the second right plate (136) are in contact with the damping and silencing device (2), and the tightness adjusting mechanism (3) is arranged between the first right plate (135) and the second right plate (136) and used for adjusting the tightness between the first right plate (135) and the damping and silencing device (2).

6. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the damping and silencing device (2) comprises an inner plate (21), an outer plate (22), an upper L plate (23), a lower L plate (24) and springs (25), wherein the inner plate (21) is connected with the surfaces of an outer left plate (111), an outer right plate (114) and a middle plate (115), the outer plate (22) is connected with the surfaces of a first left plate (133), a second left plate (134), a first right plate (135) and a second right plate (136), and the inner plate (21) and the outer plate (22) are connected through a plurality of uniformly distributed springs (25);

the upper L plate (23) and the lower L plate (24) are respectively and correspondingly fixed on two ends of the inner plate (21) and the outer plate (22), and ports of the upper L plate (23) and the lower L plate (24) are mutually buckled together.

7. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the tightness adjusting mechanisms (3) comprise a first sleeve (31), a second sleeve (32), a screw rod (33) and clamping rings (34), the clamping rings (34) are fixed on the first sleeve (31) and the second sleeve (32), two ends of the screw rod (33) respectively penetrate through the first sleeve (31) and the second sleeve (32) to be meshed with the clamping rings (34) at the two ends, the two tightness adjusting mechanisms (3) are respectively positioned between a first left plate (133) and a second left plate (134) and between a first right plate (135) and a second right plate (136), the first sleeve (31) and the second sleeve (32) of each group respectively abut against the inner walls of the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136), and the snap ring (34) is inserted into the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136) to move.

8. The eccentric vibration silencing system of the refrigerating unit of the electromechanical equipment room as recited in claim 1, wherein: the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136) are provided with annular grooves for embedding the snap rings (34), the snap rings (34) do not separate in the rotation in the annular grooves, the first sleeve (31) and the second sleeve (32) move on the screw (33) and drive the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136) to move on the sliding rail (132).

9. The eccentric vibration silencing system of refrigerating unit of electromechanical equipment room of claim 8, wherein: and through holes communicated with the ring grooves are further processed in the first left plate (133), the second left plate (134), the first right plate (135) and the second right plate (136) and are used for the screw (33) to penetrate through.