CN110630856A - Electromechanical device base structure that security performance is high - Google Patents
Electromechanical device base structure that security performance is high Download PDFInfo
- Publication number
- CN110630856A CN110630856A CN201910907809.5A CN201910907809A CN110630856A CN 110630856 A CN110630856 A CN 110630856A CN 201910907809 A CN201910907809 A CN 201910907809A CN 110630856 A CN110630856 A CN 110630856A
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- CN
- China
- Prior art keywords
- bottom plate
- compression spring
- plate
- mounting groove
- electromechanical device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000006835 compression Effects 0.000 claims abstract description 41
- 238000007906 compression Methods 0.000 claims abstract description 41
- 238000013016 damping Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 238000005286 illumination Methods 0.000 claims abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 11
- 230000035939 shock Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
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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
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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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
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses an electromechanical device base structure with high safety performance, which comprises a top plate, a support and a bottom plate, wherein a circle of rubber damping belt is embedded at the edge of the bottom plate, the rubber damping belt is made of rubber and can be fixed in a groove formed in the surface of the bottom plate through screws, the effect of buffering accidental collision of the bottom plate is realized, electromechanical devices are effectively protected and installed on the bottom plate, and meanwhile, a plurality of illuminating lamps are also installed on the surface of the bottom plate and used for playing the effects of warning and illumination in moving and better protecting the electromechanical devices installed on the bottom plate; according to the invention, the arrangement of the first compression spring is adopted, so that the two baffle plates are better drawn together, and the limit of the lower fixing plate is more stable; bottom plate extrusion backup pad for second compression spring is compressed, and two baffles separate and keep off the bottom plate after, and second compression spring is made the bottom plate to support tight dog by the elasticity that the compression produced, further makes spacing more firm.
Description
Technical Field
The invention relates to the technical field of electromechanical engineering, in particular to an electromechanical equipment base structure with high safety performance.
Background
The electromechanical equipment generally refers to machinery, electrical equipment and electrical automation equipment, and in a building, the electromechanical equipment is generally called machinery and pipeline equipment except for earthwork, carpentry, reinforcing steel bars and muddy water. Different from hardware, the product can realize certain functions. With the continuous improvement of the living standard of people, people have more and more demands on electromechanical equipment in daily life, and the electromechanical equipment from vehicles to various household appliances, computers, printers and the like becomes indispensable electromechanical products in the life of people. A chinese patent invention, entitled equipment mounting base for electromechanical engineering, was now retrieved and is published under CN 205534929U. The invention discloses an electromechanical device base structure with high safety performance, which comprises a top plate, a support and a bottom plate, wherein the support comprises an upper fixing plate, the top of the upper fixing plate is fixedly connected with the bottom of the top plate through a fixing bolt, the bottom of the upper fixing plate is fixedly connected with one end of a sleeve, a blind hole is formed in the sleeve, one end of a telescopic rod is inserted into the blind hole, the other end of the telescopic rod is fixedly connected with a lower fixing plate, damping springs are sleeved on the surfaces of the sleeve and the telescopic rod, one end of each damping spring is fixedly connected with the bottom of the upper fixing plate, and the other end of each damping spring is fixedly connected with the top.
Above-mentioned scheme well upper fixed plate and bottom plate all pass through fixing bolt fixed connection, can have vibrations often in the use of equipment, and the long-time vibrations of equipment can make fixing bolt not hard up gradually, and then makes the installation not hard up, and then probably influences the normal operating of equipment.
Disclosure of Invention
The invention aims to provide an electromechanical equipment base structure with high safety performance, and the electromechanical equipment base structure can achieve the purposes of stably installing and limiting an upper fixing plate and a lower fixing plate and avoiding influencing the normal operation of equipment.
The technical purpose of the invention is realized by the following technical scheme: an equipment mounting base for electromechanical engineering comprises a top plate, a support and a bottom plate, wherein the support comprises an upper fixed plate, a sleeve arranged at the bottom of the upper fixed plate, an insert rod which is slidably inserted in the sleeve and far away from the end of the upper fixed plate, a lower fixed plate which is arranged on the insert rod and far away from the end of the sleeve, and a damping spring sleeved on the surfaces of the sleeve and the insert rod, limit structures are respectively arranged between the bottom of the upper fixed plate and the top of the top plate and between the lower fixed plate and the top of the bottom plate, each limit structure comprises a mounting groove arranged at the top of the bottom plate and two baffle plates which are respectively slidably inserted at two opposite sides of the upper end of the mounting groove, a semicircular hole is respectively arranged in the middle of the opposite end faces of the two baffle plates, the diameter of a circular hole formed by splicing the two semicircular holes is equal to the diameter of the insert rod, the, inserting the lower fixing plate at the lower end of the inserting rod into the mounting groove, drawing the two baffle plates towards each other to enable the semicircular hole to be attached to the outer circumferential wall of the inserting rod, and limiting the lower fixing plate by the limiting function of the two baffle plates so that the lower fixing plate cannot be pulled out of the mounting groove, thereby limiting the lower fixing plate; the damping springs abut against the upper end faces of the two baffle plates, the vibration of the equipment is transmitted to the top plate, when the top plate vibrates, the sleeve pipes slide oppositely relative to the inserted rods, and the elasticity of the damping springs plays a damping role; compared with the prior art, the purposes that the upper fixing plate and the lower fixing plate are stably installed and limited and the normal operation of equipment is not influenced are achieved; the upper end surfaces of the baffles are hinged with the limiting rings, and by adopting the technical scheme, the limiting rings are arranged, so that the two baffles can be conveniently pulled to move away from each other to open the mounting groove, and further, the equipment mounting base can be conveniently assembled; by adopting the technical scheme, the first compression spring is arranged between the baffle plates and the inner part of the bottom plate, the two baffle plates are better drawn together by the arrangement of the first compression spring, so that the limit of the lower fixing plate is more stable, the upper end surface of the bottom plate is provided with the limit post beside the mounting groove, after the two baffle plates deviate from the sliding and open the mounting groove, the limit ring can rotate to be hung on the limit post, by adopting the technical scheme, the two baffle plates are pulled by the limit ring to depart from the sliding and open the mounting groove, the first compression spring is compressed, and the limit ring is hung on the limit post to prevent the two baffle plates from resetting, so that the installation is further facilitated; the edge of bottom plate is inlayed and is had round rubber shock attenuation area, and rubber shock attenuation area can pass through the fix with screw in the recess that the bottom plate surface was seted up for the rubber material, realizes the effect of bottom plate buffering unexpected collision, installs electromechanical device on it in the effectual protection, simultaneously a plurality of light is still installed on the surface of bottom plate for play the effect of warning and moving in the illumination, the electromechanical device of installation on it of better protection.
Preferably, the mounting groove bottom is equipped with second compression spring, second compression spring keeps away from the upper end of mounting groove bottom is equipped with the backup pad.
Through adopting above-mentioned technical scheme, bottom plate extrusion backup pad for second compression spring is compressed, and two baffles separate and keep off the bottom plate after, and second compression spring is supported tight dog by the elasticity that the compression produced makes the bottom plate, further makes spacing more firm.
Preferably, the mounting groove bottom has been seted up the holding tank, second compression spring one end is fixed in the holding tank bottom, the second compression spring other end is fixed backup pad bottom.
Through adopting above-mentioned technical scheme, the setting of holding tank reduces rocking when second compression spring is compressed effectively.
Preferably, four angles in the bottom of bottom plate orientation ground all are equipped with the universal wheel, and the universal wheel has the brake subassembly.
Through adopting above-mentioned technical scheme, the removal of the equipment of being convenient for, the setting of brake assembly is prevented to swift current car when stewing effectively in the setting of universal wheel.
In conclusion, the invention has the following beneficial effects:
compared with the prior art, the limit structure achieves the purposes of stable installation and limit of the upper fixing plate and the lower fixing plate and avoiding influencing the normal operation of equipment;
the arrangement of the first compression spring enables the two baffle plates to be better drawn together, and the limit of the lower fixing plate is further more stable;
thirdly, the lower fixing plate extrudes the supporting plate to enable the second compression spring to be compressed, and after the two baffle plates separate and block the lower fixing plate, the elastic force generated by the compressed second compression spring enables the lower fixing plate to abut against the stop block, so that the limiting is further more stable;
and fourthly, the universal wheels are arranged, so that the equipment can be conveniently moved, and the brake assembly is arranged, so that the vehicle can be effectively prevented from sliding when standing.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention in partial cross-section;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A base structure of electromechanical equipment with high safety performance is shown in figure 1 and comprises a top plate 1, supports 2 and a bottom plate 3, wherein four groups of supports 2 are uniformly arranged between the top plate 1 and the bottom plate 3. Bottom plate 3 all is equipped with universal wheel 4 towards four angles in the bottom on ground, and universal wheel 4 has brake assembly. The universal wheels 4 are arranged, so that the equipment can be conveniently moved, and the brake assembly is arranged, so that the carriage can be effectively prevented from sliding when standing. Roof 1 locates 3 tops of bottom plate through support 2, and recess 11 has been seted up at roof 1 top, and recess 11 is used for erection equipment.
The support 2 comprises an upper fixing plate 21, a sleeve 22 arranged at the bottom of the upper fixing plate 21 facing the bottom plate 3, an insertion rod 23 slidably inserted into the sleeve 22 and far away from the end of the upper fixing plate 21, a lower fixing plate 24 arranged at the end of the insertion rod 23 and far away from the sleeve 22, and a damping spring 25 sleeved on the surfaces of the sleeve 22 and the insertion rod 23, wherein limiting structures for mounting and limiting are arranged between the upper fixing plate 21 and the bottom of the top plate 1 and between the lower fixing plate 24 and the top of the bottom plate 3. The present embodiment will be described in detail by taking the limiting structure between the fixing plate 24 and the top of the bottom plate 3 as an example.
Limiting structure is including offering the mounting groove 31 at bottom plate 3 top, and spout 32 has all been seted up to the relative both sides in mounting groove 31 upper end, and it has baffle 5 all to slide in the spout 32 of both sides. Semicircle holes 51 are formed in the middle of the opposite ends of the two baffle plates 5, and the diameter of a round hole formed by splicing the two semicircle holes 51 is equal to that of the inserted rod 23. After the two baffles 5 are closed oppositely, the semicircular holes 51 of the baffles 5 are attached to the outer circumferential wall of the inserted rod 23. The two baffle plates 5 are away from each other and slide to the opening formed after the end part and are larger than the lower fixing plate 24, so that the lower fixing plate 24 can be conveniently inserted into the mounting groove 31.
The edge of bottom plate 3 is inlayed and is had round rubber shock attenuation area 9, and rubber shock attenuation area 9 can pass through the fix with screw in the recess that the bottom plate 3 surface was seted up for the rubber material, realizes the effect of 3 buffering unexpected collisions of bottom plate, installs electromechanical device on it in the effectual protection, simultaneously a plurality of light 10 is still installed on the surface of bottom plate 3 for play the effect of illumination in warning and the removal, the electromechanical device of installation on it of better protection.
During installation, the two baffles 5 are firstly separated from each other to open the installation groove 31, the lower fixing plate 24 at the lower end of the insertion rod 23 is inserted into the installation groove 31, the two baffles 5 are closed towards each other to enable the semicircular hole 51 to be attached to the outer circumferential wall of the insertion rod 23, and the lower fixing plate 24 cannot be pulled out of the installation groove 31 due to the limiting effect of the two baffles 5, so that the lower fixing plate 24 is limited. Damping spring 25 is contradicted two baffle 5's up end, and the vibrations of equipment are conducted roof 1, and when roof 1 vibrations, sleeve pipe 22 slided in opposite directions relative inserted bar 23, and damping spring 25's elasticity plays the cushioning effect.
Baffle 5 up end articulates there is spacing ring 52, and the setting of spacing ring 52 is convenient for stimulate two baffle 5 back of the body motion of leaving makes mounting groove 31 open, and then is convenient for assemble the equipment fixing base. A first compression spring 61 is arranged between the baffle 5 and the bottom of the sliding chute 32, and the first compression spring 61 is always in a compressed state. The arrangement of the first compression spring 61 enables the two baffle plates 5 to be better closed together, and further enables the limit of the lower fixing plate 24 to be more stable. The upper end face of the bottom plate 3 is provided with a limiting column 7 beside the mounting groove 31, and after the mounting groove 31 is opened by the two baffle plates 5 in a sliding mode, the limiting ring 52 can rotate to be hung on the limiting column 7. Two baffles 5 are pulled by the limiting ring 52 to slide away from each other to open the mounting groove 31, the first compression spring 61 is compressed, and the limiting ring 52 is hung on the limiting column 7 to prevent the two baffles 5 from resetting, so that the mounting is further facilitated. After the lower fixing plate 24 at the lower end of the inserting rod 23 is inserted into the mounting groove 31, the limiting ring 52 is separated from the limiting column 7, the two baffle plates 5 are driven by the elastic force generated by the compression of the first compression spring 61 to move oppositely, the mounting groove 31 is covered, and the lower fixing plate 24 is limited.
The bottom of the mounting groove 31 is provided with a second compression spring 62, and the upper end of the second compression spring 62 far away from the bottom of the mounting groove 31 is provided with a support plate 8. Bottom plate 24 extrusion backup pad 8 for second compression spring 62 is compressed, and two baffles 5 separate and keep off the bottom plate 24 after, and second compression spring 62 is compressed the elasticity that produces and is made bottom plate 24 support tight dog, further makes spacing more firm. Holding tank 33 has been seted up to mounting groove 31 bottom, and second compression spring 62 one end is fixed in holding tank 33 bottom, and the other end is fixed in backup pad 8 bottom. The provision of the accommodation groove 33 effectively reduces the rattling when the second compression spring 62 is compressed.
The working principle is as follows: during installation, two baffles 5 are pulled to slide away from each other through the limiting ring 52 to open the mounting groove 31, the first compression spring 61 is compressed, the limiting ring 52 is hung on the limiting column 7 to prevent the two baffles 5 from resetting, the lower fixing plate 24 at the lower end of the inserted link 23 is inserted into the mounting groove 31, the support plate 8 moves downwards, the second compression spring 62 is compressed to separate the limiting ring 52 from the limiting column 7, the two baffles 5 are driven by the elastic force generated by the compression of the first compression spring 61 to slide towards each other, the semicircular hole 51 is attached to and tightly abuts against the outer circumferential wall of the inserted link 23, the support plate 8 is driven by the elastic force generated by the compression of the second compression spring 62 to move upwards, the lower fixing plate 24 tightly abuts against the two baffles 5, and the limitation on the. Damping spring 25 cover is established outside inserted bar 23 and sleeve pipe 22, and one end is contradicted two baffles 5 at bottom plate 3 top, and the other end is contradicted two baffles 5 of roof 1 bottom, plays the cushioning effect.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides an electromechanical device base structure that security performance is high, includes roof (1), support (2) and bottom plate (3), support (2) include upper fixed plate (21), locate sleeve pipe (22) of upper fixed plate (21) bottom, slide and insert in sleeve pipe (22) and keep away from inserted bar (23) of upper fixed plate (21) end, locate inserted bar (23) and keep away from bottom plate (24) that sleeve pipe (22) end and cover and locate sleeve pipe (22) and damping spring (25) on inserted bar (23) surface, characterized by: all be equipped with limit structure between upper fixed plate (21) and roof (1) bottom and bottom plate (24) and bottom plate (3) top, limit structure including set up mounting groove (31) at bottom plate (3) top and slide respectively and insert two baffles (5) in the relative both sides in mounting groove (31) upper end, semicircle orifice (51) have all been seted up to two baffles (5) terminal surface positive centres in opposite directions, the round hole diameter that two semicircle orifices (51) were pieced together equals the diameter of inserted bar (23), two baffles (5) draw close the back in opposite directions, semicircle orifice (51) laminating inserted bar (23) outer circumferential wall, baffle (5) up end articulates there is spacing ring (52), baffle (5) with be equipped with first compression spring (61) between bottom plate (3) inside, bottom plate (3) up end is in the other spacing post (7) that is equipped with of mounting groove (31), after the two baffle plates (5) are separated from each other and slide to open the mounting groove (31), the limiting ring (52) can rotate to be hung on the limiting column (7); the edge of bottom plate (3) is inlayed and is had round rubber shock attenuation area (9), and rubber shock attenuation area (9) can pass through the fix with screw in the recess of seting up on bottom plate (3) surface for the rubber material, realize bottom plate (3) buffering unexpected collision's effect, and the electromechanical device is installed on it to effectual protection, simultaneously a plurality of light (10) are still installed on the surface of bottom plate (3) for play the effect of illumination in warning and the removal, the electromechanical device of installation on it of better protection.
2. The electromechanical device base structure with high safety performance as claimed in claim 1, wherein: the bottom of the mounting groove (31) is provided with a second compression spring (62), and the upper end of the bottom of the mounting groove (31) is provided with a support plate (8) away from the second compression spring (62).
3. The electromechanical device base structure with high safety performance as claimed in claim 2, wherein: holding tank (33) have been seted up to mounting groove (31) bottom, second compression spring (62) one end is fixed in holding tank (33) bottom, second compression spring (62) other end is fixed backup pad (8) bottom.
4. The electromechanical device base structure with high safety performance according to any one of claims 1 to 3, wherein: bottom plate (3) all are equipped with universal wheel (4) towards four angles in the bottom on ground, and universal wheel (4) have brake assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907809.5A CN110630856A (en) | 2019-09-25 | 2019-09-25 | Electromechanical device base structure that security performance is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907809.5A CN110630856A (en) | 2019-09-25 | 2019-09-25 | Electromechanical device base structure that security performance is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630856A true CN110630856A (en) | 2019-12-31 |
Family
ID=68973103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910907809.5A Withdrawn CN110630856A (en) | 2019-09-25 | 2019-09-25 | Electromechanical device base structure that security performance is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097034A (en) * | 2020-09-11 | 2020-12-18 | 合肥创兆电子科技有限公司 | Shielding device based on adjustable fixing device |
| CN113091007A (en) * | 2021-04-14 | 2021-07-09 | 成都小窝生活科技有限公司 | Environment-friendly energy-saving street lamp convenient to overhaul |
-
2019
- 2019-09-25 CN CN201910907809.5A patent/CN110630856A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097034A (en) * | 2020-09-11 | 2020-12-18 | 合肥创兆电子科技有限公司 | Shielding device based on adjustable fixing device |
| CN113091007A (en) * | 2021-04-14 | 2021-07-09 | 成都小窝生活科技有限公司 | Environment-friendly energy-saving street lamp convenient to overhaul |
| CN113091007B (en) * | 2021-04-14 | 2023-05-02 | 河南大朋电子有限公司 | Environment-friendly energy-saving street lamp convenient to overhaul |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191231 |