CN111487325A - Porous material sound insulation anti-seismic performance detection equipment - Google Patents
Porous material sound insulation anti-seismic performance detection equipment Download PDFInfo
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- CN111487325A CN111487325A CN202010388751.0A CN202010388751A CN111487325A CN 111487325 A CN111487325 A CN 111487325A CN 202010388751 A CN202010388751 A CN 202010388751A CN 111487325 A CN111487325 A CN 111487325A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/015—Attenuation, scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- General Health & Medical Sciences (AREA)
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a porous material sound insulation and vibration resistance detection device which comprises a working box and a working cavity arranged in the working box, wherein a vibration box is fixedly arranged in the working cavity, a vibration cavity is arranged in the vibration box, a vibration motor is fixedly arranged on the bottom wall of the vibration cavity, a sliding groove cavity is arranged in the sliding groove, a sliding block is arranged in the sliding groove cavity in a sliding manner, and a porous material is placed at a specified position of the device.
Description
Technical Field
The invention relates to the technical field of porous material detection, in particular to a porous material sound insulation and earthquake resistance detection device.
Background
The porous material is a material which is formed by a network structure formed by interconnected or closed pores, the boundaries or surfaces of the pores are formed by pillars or flat plates, and if the solid bodies forming the pores exist only at the boundaries of the pores (namely, the pores are communicated), the pores are called open pores; closed cells are called if the surface of the cells is also solid, i.e. each cell is completely separated from the surrounding cells; some holes are semi-open and semi-closed, the sound insulation performance of the porous material is determined by the number of the open holes, the sound insulation performance of the porous material is more accurately determined through two sound insulation detections in the detection process, the impact resistance of the porous material can be determined, and the comprehensive detection of the performance of the porous material is realized.
Disclosure of Invention
The invention aims to solve the technical problem of providing auxiliary equipment applied to linden agaric cultivation, and overcomes the problems.
The invention is realized by the following technical scheme.
The invention relates to a porous material sound-insulation and anti-seismic performance detection device, which comprises a working box and a working cavity arranged in the working box, wherein a vibration box is fixedly arranged in the working cavity, a vibration cavity is arranged in the vibration box, a vibration motor is fixedly arranged on the bottom wall of the vibration cavity, a chute cavity is arranged in the chute, a slide block is slidably arranged in the chute cavity, a driven rod is rotatably arranged on the slide block, a driving rod is rotatably arranged at the lower end of the driven rod, the lower end of the driving rod is connected with the vibration motor through a motor shaft, a material to be detected is arranged on the upper side of the vibration box, a vibration detection box is arranged on the upper side of the material to be detected, a vibration detection cavity is arranged in the vibration detection box, a height recognizer is fixedly arranged on the left, a vibration ball is arranged on the rubber layer and in the vibration detection cavity, a rotary rod is fixedly arranged at the upper side of the vibration detection box, a gear box is fixedly arranged in the working cavity, a gear cavity is arranged in the gear box, one end of the rotary rod extends into the gear cavity, a rotary rod bearing is fixedly arranged in the gear box, the rotary rod is arranged in the rotary rod bearing, one section of the rotary rod, which is positioned in the gear cavity, is fixedly provided with two gears which are vertically symmetrical and respectively comprise an upper gear and a lower gear, the right sides of the upper gear and the lower gear are fixedly provided with a special-shaped gear shaft, the right side of the special-shaped gear is fixedly provided with a special-shaped gear shaft, the right end of the special-shaped gear shaft is fixedly provided with a second helical gear, the rear wall of the gear cavity is fixedly provided with a driving motor, the upper end of a motor shaft of the driving motor, a driving gear is fixedly arranged at the lower side of the first helical gear, a driven gear is arranged at the right side of the driving gear, a driven gear shaft is fixedly arranged on the right wall of the gear cavity, the driven gear is fixedly arranged on the driven gear shaft, a connecting rod is fixedly arranged on the driven gear, a connecting rod shaft is arranged at the right end of the connecting rod, a rocker is rotatably arranged on the right wall of the gear cavity, the connecting rod shaft is slidably arranged in the hollow part of the rocker, a pull rod is rotatably arranged at the upper end of the rocker, a sound insulation detection box is fixedly arranged at the right side of the working cavity, a sound insulation cover is rotatably arranged at the upper side of the sound insulation detection box, the pull rod is rotatably connected with the sound insulation cover, the sound insulation detection box is connected with the sound insulation cover through a rotating shaft, the sound insulation detection box is separated from the sound insulation cover, the sloping block downside is fixed and is equipped with the water yield detector, the fixed decibel detector that is equipped with of sound insulation cover upside.
Further, the fixed electronic guide rail that is equipped with in the work chamber for porous material shifts from shaking the case the work case downside is equipped with feed inlet and discharge gate.
Furthermore, a horn cavity is formed in the left wall of the water passing cavity, an electromagnet is fixedly arranged on the left wall of the horn cavity, a positioning plate is fixedly arranged on the horn cavity, a supporting plate is arranged in the positioning plate in a sliding mode, an annular electromagnet is fixedly arranged at the left end of the supporting plate, a horn is fixedly arranged on the supporting plate, a baffle shaft is fixedly arranged on the upper wall of the horn cavity, and a baffle is arranged on the baffle shaft in a rotating mode and used for preventing water from entering the horn cavity.
Furthermore, the upper side of the sound insulation cover is fixedly provided with a water inlet, a gate is arranged in the water inlet in a sliding mode, the left side of the gate is fixedly provided with a spring rod, the left side of the spring rod is fixedly provided with a pull wire, the upper side of the sound insulation cover is fixedly provided with a gate motor, and the pull wire is connected with the gate motor through a motor shaft.
Further, the sound insulation cover downside is fixed and is equipped with the outlet pipe, the fixed water pump that is equipped with in working chamber upper portion, the fixed inlet tube that is equipped with of water pump upside, inlet tube one end with the water inlet is connected.
The invention has the beneficial effects that: after the porous material is placed at the designated position of the device, the device can detect the anti-seismic and sound-insulation properties of the porous material to be detected, and directly detect the sound insulation of the porous material to be detected through the guide rail after the anti-seismic detection.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure at C-C in FIG. 1;
FIG. 3 is a schematic diagram of the structure at A in FIG. 2;
FIG. 4 is a schematic diagram of the structure at B in FIG. 2;
fig. 5 is a left side view structure diagram of the special-shaped gear in fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The porous material sound-insulation and anti-seismic performance detection equipment described in conjunction with the attached drawings 1-5 comprises a working box 10 and a working chamber 11 arranged in the working box 10, wherein a vibration box 41 is fixedly arranged in the working chamber 11, a vibration chamber 47 is arranged in the vibration box 41, a vibration motor 44 is fixedly arranged on the bottom wall of the vibration chamber 47, a sliding chute 46 is fixedly arranged on the bottom wall of the vibration chamber 47, a sliding chute chamber 45 is arranged in the sliding chute 46, a sliding block 40 is slidably arranged in the sliding chute chamber 45, a driven rod 42 is rotatably arranged on the sliding block 40, a driving rod 43 is rotatably arranged at the lower end of the driven rod 42, the lower end of the driving rod 43 is connected with the vibration motor 44 through a motor shaft, a material 90 to be detected is arranged on the upper side of the vibration box 41, a vibration detection box 20 is arranged on the upper side of the material 90 to be detected, the left wall of the vibration detection cavity 35 is fixedly provided with a height recognizer 100, the bottom of the vibration detection cavity 35 is fixedly provided with a rubber layer 34, a vibration ball 36 is arranged on the rubber layer 34 and in the vibration detection cavity 35, the upper side of the vibration detection box 20 is fixedly provided with a rotating rod 21, the working cavity 11 is internally fixedly provided with a gear box 22, the gear box 22 is internally provided with a gear cavity 101, one end of the rotating rod 21 extends into the gear cavity 101, the gear box 22 is internally fixedly provided with a rotating rod bearing 39, the rotating rod 21 is installed in the rotating rod bearing 39, one section of the rotating rod 21 positioned in the gear cavity 101 is fixedly provided with two gears which are vertically symmetrical and respectively are an upper gear 23 and a lower gear 38, the right sides of the upper gear 23 and the lower gear 38 are fixedly provided with a special-shaped gear 24, the right side of the special-shaped gear 24 is fixedly provided with a special-shaped gear shaft 25, and the right end of, a driving motor 50 is fixedly arranged on the rear wall of the gear cavity 101, a first helical gear 27 is fixedly arranged at the upper end of a motor shaft of the driving motor 50, the first helical gear 27 and the second helical gear 26 are in meshing transmission through helical teeth, a driving gear 28 is fixedly arranged on the lower side of the first helical gear 27, a driven gear 29 is arranged on the right side of the driving gear 28, a driven gear shaft 52 is fixedly arranged on the right wall of the gear cavity 101, the driven gear 29 is fixed on the driven gear shaft 52, a connecting rod 31 is fixedly arranged on the driven gear 29, a connecting rod shaft 102 is arranged at the right end of the connecting rod 31, a rocker 53 is rotatably arranged on the right wall of the gear cavity 101, the connecting rod shaft 102 is slidably arranged in the hollow part of the rocker 53, a pull rod 32 is rotatably arranged at the upper end of the rocker 53, a sound insulation detection box 67 is fixedly arranged on the right side of, the pull rod 32 rotates to be connected in the lid 17 that gives sound insulation, the detection case 67 that gives sound insulation with the lid 17 that gives sound insulation is linked through axis of rotation 60, the detection case 67 that gives sound insulation with cut off through acoustic celotex board 55 between the lid 17 that gives sound insulation, be equipped with water cavity 57 in the detection case 67 that gives sound insulation, first helical gear 27 bottom is fixed and is equipped with sloping block 59, the fixed water yield detector 19 that is equipped with of sloping block 59 downside, the fixed decibel detector 80 that is equipped with of lid 17 upside that gives sound insulation.
Advantageously, the working chamber 11 is fixedly provided with a motor-driven guide rail 12, and the lower side of the working chamber 10 for transferring the porous material from the vibration box 41 is provided with a feeding hole 15 and a discharging hole 18.
Beneficially, be equipped with loudspeaker chamber 75 in crossing water chamber 57 left wall, the fixed electro-magnet 70 that is equipped with in loudspeaker chamber 75 left wall, loudspeaker chamber 75 is fixed to be equipped with locating plate 74, it is equipped with backup pad 73 to slide in locating plate 74, the fixed annular electro-magnet 72 that is equipped with in backup pad 73 left end, the fixed loudspeaker 78 that is equipped with in backup pad 73, the fixed baffle axle 76 that is equipped with of loudspeaker chamber 75 upper wall, baffle axle 76 rotates and is equipped with baffle 77, 77 is used for hindering water to get into loudspeaker chamber 75.
Advantageously, a water inlet 66 is fixedly arranged on the upper side of the soundproof cover 17, a gate 65 is slidably arranged in the water inlet 66, a spring rod 64 is fixedly arranged on the left side of the gate 65, a pull wire 63 is fixedly arranged on the left side of the spring rod 64, a gate motor 61 is fixedly arranged on the upper side of the soundproof cover 17, and the pull wire 63 is connected with the gate motor 61 through a motor shaft 62.
Beneficially, the lower side of the sound insulation cover 17 is fixedly provided with a water outlet pipe 58, the upper part of the working chamber 11 is fixedly provided with a water pump 16, the upper side of the water pump 16 is fixedly provided with a water inlet pipe 30, and one end of the water inlet pipe 30 is connected with the water inlet 66.
The working steps are as follows: putting a porous material to be detected into a feeding hole 15, starting a driving motor 50, driving the driving motor 50 to drive a first helical gear 27, driving a second helical gear 26 by helical gear meshing, driving a special-shaped gear 24 to rotate by a special-shaped gear shaft 25 by the first helical gear 27, driving a quarter circle on the special-shaped gear 24 to have teeth, when the special-shaped gear 24 rotates, the teeth on the special-shaped gear 24 are meshed with an upper gear 23 for transmission, when the material to be detected 90 moves to the upper side of a vibration box 41, a rotating rod 21 rotates forwards to drive a vibration detection box 20 to rotate downwards, starting a vibration motor 44, driving a driving rod 43 to rotate by the vibration motor 44 through a motor shaft, driving a driven rod 42 to rotate by the driving rod 43, driving a sliding block 40 to slide in a sliding groove cavity 45, repeatedly impacting the material to be detected 90 by the sliding block 40, contacting the material to be detected 90 with a rubber layer 34, after the vibration detection is finished, when the teeth on the special-shaped gear 24 are meshed with the lower gear 38 for transmission, the rotary rod 21 rotates reversely to drive the vibration detection box 20 to rotate upwards, the vibration motor 44 is started to drive the driving gear 28 to rotate, the driving gear 28 is meshed with the driven gear 29 for transmission to drive the connecting rod 31 to rotate, the connecting rod 31 rotates to drive the rocker 53 to reciprocate left and right through the connecting rod shaft 102, the rocker 53 moves left to drive the pull rod 32 to move left, the pull rod 32 pulls the sound insulation cover 17 to rotate around the rotary shaft 60, the sound insulation cover 17 is opened, the material to be detected 90 slides onto the sound insulation detection box 67 through the electric guide rail 12, at the moment, the rocker 53 moves right to drive the pull rod 32 to move right, and the pull rod 32 pushes the sound insulation cover 17 to rotate around the rotary shaft 60, closing the sound insulation cover 17, supplying current in the same direction to the electromagnet 70 and the annular electromagnet 72 when the sound insulation cover 17 is closed, enabling the electromagnet 70 and the annular electromagnet 72 to repel each other, enabling the annular electromagnet 72 to push the supporting plate 73 to slide rightwards in the middle of the positioning plate 74, enabling the baffle 77 to be pushed open rightwards by the loudspeaker 78, enabling the loudspeaker 78 to move to the water passing cavity 57 to release sound, enabling the sound to be transmitted to the middle 56 through the material 90 to be detected, enabling the decibel detector 80 to receive the sound for decibel identification, enabling current in the opposite direction to be supplied to the electromagnet 70 and the annular electromagnet 72 after the identification is finished, enabling the electromagnet 70 and the annular electromagnet 72 to attract in the same direction, enabling the supporting plate 73 to move leftwards, enabling the baffle 77 to fall down to block the loudspeaker cavity 75 when no supporting force exists, enabling the gate motor 61 to drive the pull wire 62 to rotate, enabling the pull wire 63 to be wound on, water can fall into water cavity 57 through porous material, and porous material's sound insulation performance is good or bad by falling into the water cavity 57 water yield decision, and water can be through waiting to detect material 90 and detect hydrophone 19, and when accomplishing the water injection, gate motor 61 reversal release is acted as go-between 63 the time gate 65 can move right under the effect of spring force, when detecting the completion, waits to detect material 90 and comes out from discharge gate 18.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a porous material gives sound insulation anti-seismic performance check out test set, include the work box and set up in working chamber in the work box, its characterized in that: a vibration box is fixedly arranged in the working cavity, a vibration cavity is arranged in the vibration box, a vibration motor is fixedly arranged on the bottom wall of the vibration cavity, a sliding groove cavity is arranged in the sliding groove, a sliding block is slidably arranged in the sliding groove cavity, a driven rod is rotatably arranged on the sliding block, a driving rod is rotatably arranged at the lower end of the driven rod, the lower end of the driving rod is connected with the vibration motor through a motor shaft, a material to be detected is arranged on the upper side of the vibration box, a vibration detection box is arranged on the upper side of the material to be detected, a vibration detection cavity is arranged in the vibration detection box, a height recognizer is fixedly arranged on the left wall of the vibration detection cavity, a rubber layer is fixedly arranged at the bottom of the vibration detection cavity, a vibration ball is arranged on the rubber layer and in the, a gear cavity is arranged in the gear box, one end of the rotating rod extends into the gear cavity, a rotating rod bearing is fixedly arranged in the gear box, the rotating rod is installed in the rotating rod bearing, one section of the rotating rod, which is positioned in the gear cavity, is fixedly provided with two gears which are vertically symmetrical and are respectively an upper gear and a lower gear, the right sides of the upper gear and the lower gear are fixedly provided with a special-shaped gear, the right side of the special-shaped gear is fixedly provided with a special-shaped gear shaft, the right end of the special-shaped gear shaft is fixedly provided with a second helical gear, the rear wall of the gear cavity is fixedly provided with a driving motor, the upper end of a motor shaft of the driving motor is fixedly provided with a first helical gear, the first helical gear and the second helical gear are in meshing transmission through helical teeth, the lower side of the first helical gear is fixedly provided with a driving gear, the driven gear shaft is fixed with the driven gear, the driven gear is fixed with the connecting rod, there is the connecting rod right-hand member to be equipped with the connecting rod axle, gear chamber right side wall rotates and is equipped with the rocker, rocker cavity department slides and is equipped with the connecting rod axle, the rocker upper end is rotated and is equipped with the pull rod, the fixed syllable-dividing detection case that is equipped with in working chamber right side, syllable-dividing detection case upside rotates and is equipped with the lid that gives sound insulation, the pull rod rotates and connects at the lid that gives sound insulation, the detection case that gives sound insulation with the lid that gives sound insulation passes through the axis of rotation and links, the detection case that gives sound insulation with cut off through the acoustic celotex between the lid that gives sound insulation, be equipped with the chamber of crossing water in the detection case that gives sound insulation, the fixed.
2. The apparatus for detecting the soundproof and earthquake-resistant performance of the porous material according to claim 1, wherein: the work intracavity is fixed to be equipped with electronic guide rail for porous material shifts from shaking the case the work case downside is equipped with feed inlet and discharge gate.
3. The apparatus for detecting the soundproof and earthquake-resistant performance of the porous material according to claim 1, wherein: the water-passing cavity comprises a water-passing cavity left wall, and is characterized in that a horn cavity is arranged in the water-passing cavity left wall, an electromagnet is fixedly arranged on the horn cavity left wall, a positioning plate is fixedly arranged on the horn cavity, a supporting plate is arranged in the positioning plate in a sliding mode, an annular electromagnet is fixedly arranged at the left end of the supporting plate, a horn is fixedly arranged on the supporting plate, a baffle shaft is fixedly arranged on the horn cavity upper wall, and a baffle is arranged on the baffle shaft in a rotating mode and used for preventing water from.
4. The apparatus for detecting the soundproof and earthquake-resistant performance of the porous material according to claim 1, wherein: the water inlet is fixedly arranged on the upper side of the sound insulation cover, the gate is arranged in the water inlet in a sliding mode, the spring rod is fixedly arranged on the left side of the gate, a pull wire is fixedly arranged on the left side of the spring rod, a gate motor is fixedly arranged on the upper side of the sound insulation cover, and the pull wire is connected with the gate motor through a motor shaft.
5. The apparatus for detecting the soundproof and earthquake-resistant performance of the porous material according to claim 1, wherein: the sound insulation cover downside is fixed and is equipped with the outlet pipe, the fixed water pump that is equipped with in working chamber upper portion, the fixed inlet tube that is equipped with of water pump upside, inlet tube one end with the water inlet is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388751.0A CN111487325B (en) | 2020-05-09 | 2020-05-09 | Porous material sound insulation anti-seismic performance detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388751.0A CN111487325B (en) | 2020-05-09 | 2020-05-09 | Porous material sound insulation anti-seismic performance detection equipment |
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| Publication Number | Publication Date |
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| CN111487325A true CN111487325A (en) | 2020-08-04 |
| CN111487325B CN111487325B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010388751.0A Active CN111487325B (en) | 2020-05-09 | 2020-05-09 | Porous material sound insulation anti-seismic performance detection equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009191499A (en) * | 2008-02-13 | 2009-08-27 | Daiwa House Industry Co Ltd | Knocking mechanism, equipment switching control mechanism using the knocking mechanism and fitting, toilet ventilating/sound-shielding structure, venting/sound-shielding structure, and knocking mechanism setting structure |
| CN101806653A (en) * | 2010-03-23 | 2010-08-18 | 吉林大学 | Impact property detecting and analyzing system of transmission system of engineering vehicle |
| CN105547626A (en) * | 2016-01-28 | 2016-05-04 | 中铁十一局集团第五工程有限公司 | Manufacture method of karst pile foundation anti-seismic test testing device |
| EP3029447A2 (en) * | 2014-11-11 | 2016-06-08 | Soonchunhyang University Industry Academy Cooperation Foundation | Low-cost bidirectional shaking table apparatus |
| CN109357852A (en) * | 2018-10-22 | 2019-02-19 | 成都理工大学 | A kind of static(al) rack and Quintic system shock test device |
-
2020
- 2020-05-09 CN CN202010388751.0A patent/CN111487325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009191499A (en) * | 2008-02-13 | 2009-08-27 | Daiwa House Industry Co Ltd | Knocking mechanism, equipment switching control mechanism using the knocking mechanism and fitting, toilet ventilating/sound-shielding structure, venting/sound-shielding structure, and knocking mechanism setting structure |
| CN101806653A (en) * | 2010-03-23 | 2010-08-18 | 吉林大学 | Impact property detecting and analyzing system of transmission system of engineering vehicle |
| EP3029447A2 (en) * | 2014-11-11 | 2016-06-08 | Soonchunhyang University Industry Academy Cooperation Foundation | Low-cost bidirectional shaking table apparatus |
| CN105547626A (en) * | 2016-01-28 | 2016-05-04 | 中铁十一局集团第五工程有限公司 | Manufacture method of karst pile foundation anti-seismic test testing device |
| CN109357852A (en) * | 2018-10-22 | 2019-02-19 | 成都理工大学 | A kind of static(al) rack and Quintic system shock test device |
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| CN111487325B (en) | 2020-12-01 |
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Effective date of registration: 20201117 Address after: No.8, hardware machinery industrial park, nianzhuang Town, Pizhou City, Xuzhou City, Jiangsu Province Applicant after: Xuzhou xinyuyuan Engineering Machinery Technology Co.,Ltd. Address before: No.71, xihugang Road, waitou Town, Xiangshan County, Ningbo City, Zhejiang Province 315700 Applicant before: Xiangshan crosswind Electronic Technology Co.,Ltd. |
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