CN110360411B - Damping base for mixed flow pump - Google Patents
Damping base for mixed flow pump Download PDFInfo
- Publication number
- CN110360411B CN110360411B CN201910547806.5A CN201910547806A CN110360411B CN 110360411 B CN110360411 B CN 110360411B CN 201910547806 A CN201910547806 A CN 201910547806A CN 110360411 B CN110360411 B CN 110360411B
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- Prior art keywords
- base
- mounting
- wall
- outer side
- connecting plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Abstract
The invention discloses a damping base for a mixed flow pump, which comprises a pump body, wherein a mounting frame is fixedly arranged at the bottom end of the pump body, the bottom end of the mounting frame is provided with the damping base, the damping base comprises a base and a connecting plate movably arranged at the top end of the base, a plurality of first fastening bolts are uniformly inserted on the top wall of the mounting frame, the first fastening bolts penetrate through the mounting frame and are in threaded connection with the connecting plate, a plurality of fixing lugs are uniformly and fixedly arranged on the outer side wall of the bottom end of the base, a plurality of first movable rods are uniformly and fixedly arranged on the bottom wall of the connecting plate, the bottom ends of the first movable rods are inserted on the top wall of the base, and two mounting plate groups are symmetrically and. The damping base is not required to be made of components with special structures, and is simple in structure, convenient to process, convenient to install and disassemble, good in damping effect, low in manufacturing and using cost, good in economical and practical performance and suitable for popularization and use.
Description
Technical Field
The invention relates to the technical field of mixed flow pumps, in particular to a damping base for a mixed flow pump.
Background
The mixed flow pump is a pump between the centrifugal pump and the axial flow pump, the specific speed of the mixed flow pump is higher than that of the centrifugal pump and lower than that of the axial flow pump, generally between 300 and 500, the lift of the mixed flow pump is higher than that of the axial flow pump, but the flow rate of the mixed flow pump is smaller than that of the axial flow pump and is larger than that of the centrifugal pump.
The mixed flow pump is a device commonly used in people's life, and the mixed flow pump generally needs to be fixed to it in the use, and when some occasions were used, the mixed flow pump need adopt a shock attenuation base to carry out shock attenuation processing to the mixed flow pump to prevent that the mixed flow pump from causing the damage because of strong vibrations in the use, mixed flow pump shock attenuation base among the prior art all adopts special design's structure usually, and its course of working is complicated, and the cost of manufacture is expensive, uses in the construction and can cause construction cost too high, consequently need to make the improvement to this.
Disclosure of Invention
The invention aims to solve the problem that the manufacturing and using costs of a damping base of a mixed flow pump in the prior art are high, and provides the damping base for the mixed flow pump.
In order to achieve the purpose, the invention adopts the following technical scheme:
a damping base for a mixed flow pump comprises a pump body, wherein a mounting frame is fixedly mounted at the bottom end of the pump body, a damping base is arranged at the bottom end of the mounting frame, the damping base comprises a base and a connecting plate movably mounted at the top end of the base, a plurality of first fastening bolts are uniformly inserted in the top wall of the mounting frame, penetrate through the mounting frame and are in threaded connection with the connecting plate, a plurality of fixing lugs are uniformly and fixedly mounted on the outer side wall of the bottom end of the base, a plurality of first movable rods are uniformly and fixedly mounted on the bottom wall of the connecting plate, the bottom ends of the first movable rods are inserted in the top wall of the base, two mounting plate groups are symmetrically and detachably mounted between the base and the connecting plate, each mounting plate group comprises two symmetrically arranged mounting plates, and the opposite ends of the two mounting plates are respectively inserted in the base and, connecting grooves matched with the mounting plates are formed in the base and the connecting plate, a plurality of second fastening bolts are inserted in the outer side walls of the opposite sides of the two mounting plates at equal distances, penetrate through the mounting plates and are respectively in threaded connection with the base or the connecting plate, a plurality of second springs are uniformly detachably mounted between the two mounting plates, and a rubber base plate is detachably mounted on the bottom wall of the base;
the outer side of each first movable rod is fixedly wrapped with a rubber sleeve, the top wall of the base is uniformly provided with a plurality of movable grooves which are mutually matched with the first movable rods and the rubber sleeves, the inner side wall of the bottom end of each movable groove is inserted with a plurality of second movable rods at equal distances, the top ends of the second movable rods which are positioned in the same movable groove are jointly and fixedly provided with a supporting plate, the outer side wall of each second movable rod is wound with a first spring, the two ends of the first spring are respectively and fixedly arranged on the bottom wall of the supporting plate and the bottom wall of the inner side of the movable groove, the top wall of the supporting plate is fixedly provided with a rubber supporting pad which is mutually matched with the first movable rods, the outer side of each first movable rod is provided with a protective device, the protective device comprises an annular fixed sleeve female sleeve which is fixedly arranged on the top wall of the base, and the top end of the annular fixed sleeve is movably inserted with an annular fixed sleeve male, the top end of the annular fixing sleeve is fixedly arranged on the bottom wall of the connecting plate;
the rubber cushion plate is characterized in that two connecting blocks are symmetrically and fixedly installed on the top wall of the rubber cushion plate, two positioning grooves matched with the connecting blocks are symmetrically formed in the bottom wall of the base, limiting blocks can be movably installed on the outer side walls of the top ends of the two connecting blocks, limiting grooves matched with the limiting blocks are formed in the inner side walls of the two positioning grooves, the limiting grooves extend to the outer side of the base, a plurality of second balls are installed on the inner side walls of the two limiting grooves at equal distances and are mutually contacted with the limiting blocks, two threaded rods matched with the limiting blocks are symmetrically in threaded connection on the outer side wall of the base, and the threaded rods penetrate through the outer side wall of one side of the base and extend into the limiting grooves;
two all set up on the lateral wall on connecting block top with the mounting groove of stopper mutually supporting, two impartial distance is inserted on the inside wall of mounting groove and is equipped with a plurality of third movable rods, and the equal fixed mounting of one end that the mounting groove was kept away from to the third movable rod is on the lateral wall of stopper, every all around being equipped with the third spring on the lateral wall of third movable rod, and the both ends difference fixed mounting of third spring is on the lateral wall of stopper and the inside wall of mounting groove.
Preferably, every equal fixed mounting in both ends of second spring has the installation piece, and two installation pieces contact with base and connecting plate each other respectively, two equal distance is inserted on the lateral wall of the relative one side of installation piece and is equipped with a plurality of third fastening bolt, and third fastening bolt all runs through installation piece and threaded connection on the mounting panel.
Preferably, two a plurality of first steel balls are installed to the equidistance on the inside wall of constant head tank, and first steel ball all contacts with the connecting block each other.
Preferably, two equal fixed mounting has the limiting plate on the lateral wall that the threaded rod is close to stopper one end.
Compared with the prior art, the invention has the following beneficial effects:
1. the damping base is not required to be made of components with special structures, and has the advantages of simple structure, convenient processing, convenient assembly and disassembly, good damping effect, lower manufacturing and using cost, better economic practicability and suitability for popularization and use;
2. the damping spring between the base and the connecting plate can be conveniently installed and disassembled, so that the damping spring can be conveniently maintained, maintained and replaced, the using effect of the damping base is improved, and the service life of the damping base is prolonged;
3. fixed mounting has rubber backing plate on the diapire of base, has not only further improved vibration damping mount's shock attenuation effect, has also played the effect of making an uproar, reasonable in design, and practical function is good.
Drawings
FIG. 1 is a front sectional view of a damping base for a mixed flow pump according to the present invention;
FIG. 2 is a schematic front view of a damping base for a mixed flow pump according to the present invention;
FIG. 3 is an enlarged view of the structure of part A of a damping base for a mixed flow pump according to the present invention;
FIG. 4 is an enlarged view of a portion B of a damper base for a mixed flow pump according to the present invention;
FIG. 5 is an enlarged view of the structure of part C of a damping base for a mixed flow pump according to the present invention.
In the figure: 1 pump body, 2 mounting brackets, 3 bases, 4 connecting plates, 5 first fastening bolts, 6 fixed ears, 7 first movable rods, 8 rubber sleeves, 9 movable grooves, 10 second movable rods, 11 supporting plates, 12 first springs, 13 rubber supporting pads, 14 annular fixed sleeve female sleeves, 15 annular fixed sleeve sleeves, 16 mounting plates, 17 connecting grooves, 18 second fastening bolts, 19 mounting blocks, 20 third fastening bolts, 21 second springs, 22 rubber base plates, 23 connecting blocks, 24 positioning grooves, 25 first steel balls, 26 limiting blocks, 27 mounting grooves, 28 third movable rods, 29 third springs, 30 limiting grooves, 31 second balls, 32 threaded rods and 33 limiting plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a damping base for a mixed flow pump comprises a pump body 1, a mounting frame 2 is fixedly installed at the bottom end of the pump body 1, a damping base is arranged at the bottom end of the mounting frame 2, the damping base comprises a base 3 and a connecting plate 4 movably installed at the top end of the base 3, a plurality of first fastening bolts 5 are uniformly inserted on the top wall of the mounting frame 2, the first fastening bolts 5 all penetrate through the mounting frame 2 and are in threaded connection with the connecting plate 4, a plurality of fixing lugs 6 are uniformly and fixedly installed on the outer side wall of the bottom end of the base 3, a plurality of first movable rods 7 are uniformly and fixedly installed on the bottom wall of the connecting plate 4, the bottom ends of the first movable rods 7 are all inserted on the top wall of the base 3, a rubber sleeve 8 is fixedly wrapped on the outer side of each first movable rod 7, a plurality of movable grooves 9 mutually matched with the first movable rods 7 and the rubber sleeve, a plurality of second movable rods 10 are inserted to impartial distance on the inside wall of every activity groove 9 bottom, the common fixed mounting in top that is located the second movable rod 10 with a activity groove 9 has backup pad 11, all around being equipped with first spring 12 on the lateral wall of every second movable rod 10, and the both ends of first spring 12 are equallyd divide do not fixed mounting on the diapire of backup pad 11 and the inboard diapire of activity groove 9, fixed mounting has the rubber support pad 13 of mutually supporting with first movable rod 7 on the roof of backup pad 11, not only can play the shock attenuation effect, and the noise that rubber can avoid mixed flow pump during operation to produce outwards propagates.
The outside of every first movable rod 7 all is equipped with protector, and protector includes the fixed female cover 14 of annular cover of fixed mounting on base 3 roof, and the movable inserting in top of the fixed female cover 14 of annular is equipped with fixed cover sub-cover 15 of annular, and the fixed top fixed mounting of fixed cover sub-cover 15 of annular is on the diapire of connecting plate 4, avoids rubber sleeve 8 direct exposure outside and premature aging or corruption.
Two mounting plate groups are symmetrically and detachably mounted between the base 3 and the connecting plate 4, each mounting plate group comprises two mounting plates 16 which are symmetrically arranged, opposite ends of the two mounting plates 16 are respectively inserted into the base 3 and the connecting plate 4, connecting grooves 17 which are matched with the mounting plates 16 are respectively formed in the base 3 and the connecting plate 4, a plurality of second fastening bolts 18 are inserted into the outer side wall of one side of each mounting plate 16 at equal distances, the second fastening bolts 18 penetrate through the mounting plates 16 and are respectively in threaded connection with the base 3 or the connecting plate 4, a plurality of second springs 21 are uniformly and detachably mounted between the two mounting plates 16, mounting blocks 19 are fixedly mounted at two ends of each second spring 21, the two mounting blocks 19 are respectively in mutual contact with the base 3 and the connecting plate 4, and a plurality of third fastening bolts 20 are inserted into the outer side wall of one side of each mounting block 19 at equal distances, and third fastening bolt 20 all runs through installation piece 19 and threaded connection on mounting panel 16, can be convenient to the second spring 21 is installed and is dismantled to can be convenient maintain, maintain and change second spring 21, not only improve shock mount's result of use, also prolonged shock mount's life.
Demountable installation has rubber backing plate 22 on the diapire of base 3, has not only further improved vibration damping mount's shock attenuation effect, has also played the effect of making an uproar, reasonable in design, and practical function is good.
Symmetry fixed mounting has two connecting blocks 23 on the roof of rubber backing plate 22, and the symmetry is seted up two constant head tanks 24 of mutually supporting with connecting block 23 on the diapire of base 3, and a plurality of first steel balls 25 are installed to impartial distance on two constant head tanks 24's the inside wall, and first steel ball 25 all contacts each other with connecting block 23, can prevent that connecting block 23 and rubber backing plate 22 horizontal direction from rocking.
Equal movable mounting has stopper 26 on the lateral wall on two connecting blocks 23 tops, all set up the mounting groove 27 of mutually supporting with stopper 26 on the lateral wall on two connecting blocks 23 tops, impartial distance is inserted and is equipped with a plurality of third movable rods 28 on the inside wall on two mounting grooves 27, and the equal fixed mounting of one end that mounting groove 27 was kept away from to third movable rod 28 is on the lateral wall of stopper 26, all around being equipped with third spring 29 on every third movable rod 28's the lateral wall, and the both ends difference fixed mounting of third spring 29 is on the lateral wall of stopper 26 and mounting groove 27's inside wall, two stoppers 26 all can move with the free horizontal direction.
All offer the spacing groove 30 of mutually supporting with stopper 26 on the inside wall of two constant head tanks 24, and spacing groove 30 all extends to the outside of base 3, impartial distance installs a plurality of second balls 31 on two spacing groove 30's the inside wall, and second ball 31 all contacts with stopper 26 each other, can prevent stopper 26, connecting block 23 and rubber backing plate 22 rock from top to bottom, symmetrical threaded connection has two threaded rods 32 of mutually supporting with stopper 26 on the lateral wall of base 3, and threaded rod 32 all runs through on the lateral wall of base 3 one side and extends to in the spacing groove 30, promotion stopper 26 that threaded rod 32 can be convenient rotates.
The outer side walls of the two threaded rods 32 close to one end of the limiting block 26 are fixedly provided with limiting plates 33, so that the threaded rods 32 can be prevented from falling off from the limiting grooves 30.
In the invention, the rubber cushion plate 22 is placed at the bottom end of the base 3, the two connecting blocks 23 are respectively inserted into the two positioning grooves 24, and the third spring 29 pushes one end of the limiting block 26 to move into the limiting groove 30 due to the recovery of the elasticity thereof, so that the limiting block 26, the connecting blocks 23 and the rubber cushion plate 22 can be fixedly arranged on the bottom wall of the base 3; the limiting block 26, the connecting block 23 and the rubber backing plate 22 can be conveniently detached from the bottom wall of the base 3 by rotating the threaded rod 32 and pushing the limiting block 26 to the outer side of the limiting groove 30.
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 considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The utility model provides a vibration damping mount for mixed flow pump, includes the pump body (1), the bottom fixed mounting of the pump body (1) has mounting bracket (2), the bottom of mounting bracket (2) is equipped with vibration damping mount, its characterized in that: the damping base comprises a base (3) and a connecting plate (4) movably mounted at the top end of the base (3), a plurality of first fastening bolts (5) are uniformly inserted on the top wall of the mounting frame (2), the first fastening bolts (5) penetrate through the mounting frame (2) and are in threaded connection with the connecting plate (4), a plurality of fixing lugs (6) are uniformly and fixedly mounted on the outer side wall of the bottom end of the base (3), a plurality of first movable rods (7) are uniformly and fixedly mounted on the bottom wall of the connecting plate (4), the bottom ends of the first movable rods (7) are inserted on the top wall of the base (3), two mounting plate groups are symmetrically and detachably mounted between the base (3) and the connecting plate (4), each mounting plate group comprises two symmetrically arranged mounting plates (16), and the opposite ends of the two mounting plates (16) are respectively inserted on the base (3) and the connecting plate (4), connecting grooves (17) matched with the mounting plates (16) are formed in the base (3) and the connecting plate (4), a plurality of second fastening bolts (18) are inserted in equal distances in the outer side wall of one side, opposite to the two mounting plates (16), of each second fastening bolt (18) penetrates through the mounting plates (16) and is respectively in threaded connection with the base (3) or the connecting plate (4), a plurality of second springs (21) are uniformly and detachably mounted between the two mounting plates (16), and a rubber base plate (22) is detachably mounted on the bottom wall of the base (3);
the outer side of each first movable rod (7) is fixedly wrapped with a rubber sleeve (8), a plurality of movable grooves (9) which are mutually matched with the first movable rods (7) and the rubber sleeves (8) are uniformly formed in the top wall of the base (3), a plurality of second movable rods (10) are inserted in the inner side wall of the bottom end of each movable groove (9) at equal distances, a supporting plate (11) is fixedly mounted at the top end of each second movable rod (10) in the same movable groove (9), a first spring (12) is wound on the outer side wall of each second movable rod (10), the two ends of each first spring (12) are fixedly mounted on the bottom wall of the supporting plate (11) and the bottom wall of the inner side of the movable groove (9), a rubber supporting pad (13) which is mutually matched with the first movable rods (7) is fixedly mounted on the top wall of the supporting plate (11), the outer side of each first movable rod (7) is provided with a protection device, the protection device comprises an annular fixed sleeve female sleeve (14) fixedly mounted on the top wall of the base (3), the top end of the annular fixed sleeve female sleeve (14) is movably inserted with an annular fixed sleeve male sleeve (15), and the top end of the annular fixed sleeve male sleeve (15) is fixedly mounted on the bottom wall of the connecting plate (4);
two connecting blocks (23) are symmetrically and fixedly arranged on the top wall of the rubber cushion plate (22), the bottom wall of the base (3) is symmetrically provided with two positioning grooves (24) which are matched with the connecting blocks (23), the outer side walls of the top ends of the two connecting blocks (23) are movably provided with limiting blocks (26), the inner side walls of the two positioning grooves (24) are respectively provided with limiting grooves (30) which are matched with the limiting blocks (26), the limiting grooves (30) extend to the outer side of the base (3), a plurality of second balls (31) are arranged on the inner side walls of the two limiting grooves (30) at equal distances, the second rolling balls (31) are in mutual contact with the limiting blocks (26), two threaded rods (32) which are matched with the limiting blocks (26) are symmetrically and threadedly connected on the outer side wall of the base (3), the threaded rods (32) penetrate through the outer side wall of one side of the base (3) and extend into the limiting grooves (30);
two all offer on the lateral wall on connecting block (23) top with stopper (26) mounting groove (27) of mutually supporting, two impartial distance is inserted on the inside wall of mounting groove (27) and is equipped with a plurality of third movable rods (28), and third movable rod (28) keep away from the equal fixed mounting of one end of mounting groove (27) on the lateral wall of stopper (26), every all around being equipped with third spring (29) on the lateral wall of third movable rod (28), and the both ends difference fixed mounting of third spring (29) is on the lateral wall of stopper (26) and the inside wall of mounting groove (27).
2. A vibration-damping mount for a mixed flow pump as claimed in claim 1, wherein: every the equal fixed mounting in both ends of second spring (21) has installation piece (19), and two installation pieces (19) respectively with base (3) and connecting plate (4) contact each other, two equal distance is inserted on the lateral wall of the relative one side of installation piece (19) and is equipped with a plurality of third fastening bolt (20), and third fastening bolt (20) all run through installation piece (19) and threaded connection on mounting panel (16).
3. A vibration-damping mount for a mixed flow pump as claimed in claim 1, wherein: a plurality of first steel balls (25) are installed on the inner side wall of the positioning groove (24) at equal distances, and the first steel balls (25) are in mutual contact with the connecting block (23).
4. A vibration-damping mount for a mixed flow pump as claimed in claim 1, wherein: and two limiting plates (33) are fixedly mounted on the outer side wall of one end, close to the limiting block (26), of the threaded rod (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547806.5A CN110360411B (en) | 2019-06-24 | 2019-06-24 | Damping base for mixed flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547806.5A CN110360411B (en) | 2019-06-24 | 2019-06-24 | Damping base for mixed flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110360411A CN110360411A (en) | 2019-10-22 |
| CN110360411B true CN110360411B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910547806.5A Active CN110360411B (en) | 2019-06-24 | 2019-06-24 | Damping base for mixed flow pump |
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| CN (1) | CN110360411B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2889877T3 (en) * | 2013-12-06 | 2021-09-20 | Itt Manufacturing Enterprises Llc | Seismic isolation assembly |
| CN203770957U (en) * | 2014-03-24 | 2014-08-13 | 中核华泰建设有限公司 | Simple damping base for horizontal pump |
| CN205025995U (en) * | 2015-09-07 | 2016-02-10 | 贝尔金减振设备制造（昆山）有限公司 | MA type spring bumper shock absorber |
| CN206206485U (en) * | 2016-08-25 | 2017-05-31 | 楚雄市鹿城彩印有限责任公司 | A kind of printing fixed mount of shock-absorbing type |
| CN106158304A (en) * | 2016-08-29 | 2016-11-23 | 成都创年科技有限公司 | A kind of denoising device of transformator |
| CN206429608U (en) * | 2016-12-27 | 2017-08-22 | 安徽机电职业技术学院 | A kind of vibration damper with adjustable damping |
| CN206802677U (en) * | 2017-04-07 | 2017-12-26 | 江西远大保险设备实业集团有限公司 | A kind of RFID label tag manages all-in-one |
| CN207500726U (en) * | 2017-11-16 | 2018-06-15 | 高辉 | A kind of architectural electricity equipment vibration isolation erecting device |
| CN208474793U (en) * | 2018-06-05 | 2019-02-05 | 安徽龙安消防工程有限责任公司 | A kind of fire pump with Shockproof base |
| CN208546672U (en) * | 2018-06-28 | 2019-02-26 | 中铁二十五局集团第一工程有限公司 | A kind of highway impact construction damped noise reduction device |
| CN108816443A (en) * | 2018-09-10 | 2018-11-16 | 安吉科广新材料科技有限公司 | A kind of processing unit (plant) of novel high polymer conductive polymer material |
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