CN112709489A - Municipal works guard fence structure that protecting effect is good - Google Patents
Municipal works guard fence structure that protecting effect is good Download PDFInfo
- Publication number
- CN112709489A CN112709489A CN202011601564.2A CN202011601564A CN112709489A CN 112709489 A CN112709489 A CN 112709489A CN 202011601564 A CN202011601564 A CN 202011601564A CN 112709489 A CN112709489 A CN 112709489A
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- China
- Prior art keywords
- fixedly connected
- groove
- fence structure
- cavity
- block
- 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.)
- Pending
Links
- 230000002633 protecting Effects 0.000 title claims abstract description 11
- 230000001681 protective Effects 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 claims abstract description 20
- 239000003381 stabilizer Substances 0.000 claims description 8
- 230000000903 blocking Effects 0.000 claims description 4
- 230000004301 light adaptation Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 5
- 230000001012 protector Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/16—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/615—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
- E01F9/669—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for fastening to safety barriers or the like
Abstract
The invention relates to the technical field of protective fences and discloses a municipal engineering protective fence structure with a good protective effect. This municipal works protective fence structure that protecting effect is good, through the rotation of opening the screwed pipe behind the rotating electrical machines, and then make the sleeve pipe drive the kicking block and reciprocate, and the removal of kicking block will push up the lug and move to make the lug drive the backup pad and remove, the removal of backup pad will drive diaphragm and fender rod displacement, thereby reach the effect of quick extension, and diaphragm and fender rod can not lose the guard action because of the collision, make the device can be quick and stable completion extension.
Description
Technical Field
The invention relates to the technical field of protective fences, in particular to a municipal engineering protective fence structure with a good protective effect.
Background
In China, municipal facilities refer to various buildings, structures, equipment and the like which are arranged in the planning and construction range of urban areas and towns and provide paid or unpaid public products and services for residents based on government responsibilities and obligations. Various public infrastructure construction supporting urban life belongs to municipal engineering categories, such as common urban roads, bridges and subways, and various pipelines closely related to life: rainwater, sewage, water supply, reclaimed water, electric power, telecommunication, heating power, gas and the like, and the construction of squares, urban greening and the like belong to the municipal engineering category.
During municipal building construction, in order to guarantee the normal clear of construction, guarantee the security of construction simultaneously, need set up protector at the construction area and protect the rail, but present protector regulation nature is relatively poor, can not expand according to actual need in the in-service use process, leads to the protecting effect relatively poor.
According to the municipal engineering protective fence structure disclosed in the Chinese publication No. CN109779387A, the inventor finds the following problems when realizing the technical scheme: 1. the device drives the extension plates to move in the opposite directions or in the opposite directions only through the matching of the gear, the rack and the worm gear, and cannot effectively and stably protect the expanded protection range, so that certain potential safety hazards exist; 2. the extension of extension board is realized through more drive member to the device, and too high and easy damage of cost to a guardrail, the practicality is relatively poor.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the municipal engineering protective fence structure with good protection effect, which has the advantages of rapid and stable expansion and the like, and solves the problem that the stability cannot be maintained during rapid expansion.
(II) technical scheme
In order to achieve the purpose of quick and stable expansion, the invention provides the following technical scheme: a municipal engineering protective fence structure with good protective effect comprises a fence body, wherein the left side and the right side of the bottom of the fence body are fixedly connected with supporting legs, the bottom end of each supporting leg is fixedly connected with a base, the top of the fence body is provided with two groups of warning lamps, a rotary groove is formed in the fence body, a groove is formed in the fence body and communicated with the rotary groove, the left side and the right side of the rotary groove are respectively provided with a cavity, the inner wall of the bottom of the groove is fixedly connected with a rotary motor, the output end of the rotary motor is fixedly connected with the bottom end of a threaded pipe, the top end of the threaded pipe is fixedly connected with the middle part of a bearing, the top of the bearing is fixedly connected with the inner wall of the top of the rotary groove, the outer side of the threaded pipe is screwed with a sleeve pipe, the outer side of the sleeve pipe is fixedly connected with two groups of, the top and the bottom of backup pad right side all fixedly connected with diaphragm, two sets of fixedly connected with multiunit guard bar between the diaphragm, the movable groove has all been seted up to both sides around the cavity, the equal fixedly connected with movable block in front side and the rear side of backup pad, the left side of movable block and the right-hand member fixed connection of spring, the left end fixed connection of spring is at movable groove left side inner wall, the left side fixedly connected with lug of backup pad, and the lug is located the top of kicking block.
Preferably, a sliding cavity is formed in the front side of the rotating groove, a stabilizer bar is fixedly connected to the outer side of the sleeve, and the stabilizer bar is connected to the sliding cavity in a sliding mode.
Preferably, the thickness of the supporting plate is matched with that of the cross plate, and the thickness of the supporting plate is matched with that of the width of the inner wall of the cavity.
Preferably, the top and the bottom of the cavity are both provided with a balance groove, the top of the transverse plate is fixedly connected with a balance block, and the balance block is connected in the balance groove in a sliding manner.
Preferably, the inside of balancing piece has been seted up and has been placed the chamber, the inner wall fixedly connected with center pin of placing the chamber, the pulley has been cup jointed in the outside of center pin, the outside of pulley contacts with the inner wall of compensating groove.
Preferably, the outer side of the central shaft is fixedly connected with two groups of blocking blocks, and the two groups of blocking blocks are respectively positioned at the front side and the rear side of the pulley.
Preferably, the protruding block and the top block are both arc-shaped blocks, and the thickness of the top block is larger than that of the protruding block.
(III) advantageous effects
Compared with the prior art, the invention provides the municipal engineering protective fence structure with good protection effect, which has the following beneficial effects:
1. this municipal works protective fence structure that protecting effect is good, through the rotation of opening the screwed pipe behind the rotating electrical machines, and then make the sleeve pipe drive the kicking block and reciprocate, and the removal of kicking block will push up the lug and move to make the lug drive the backup pad and remove, the removal of backup pad will drive diaphragm and fender rod displacement, thereby reach the effect of quick extension, and diaphragm and fender rod can not lose the guard action because of the collision, make the device can be quick and stable completion extension.
2. This municipal works guard fence structure that protecting effect is good, through setting up the spring, and then when kicking block top moved the lug, the spring received the extension of movable block, and when the kicking block breaks away from the lug, the spring will drive the diaphragm through the mode that drives the movable block shrink and get into in the cavity, has ensured the device's secondary operation, has increased the device's life, and spring low in cost, suitable popularization.
Drawings
FIG. 1 is a schematic view of the whole structure of a municipal engineering protective fence with good protection effect;
FIG. 2 is a sectional view of a fence body structure of a municipal engineering protective fence structure with good protection effect, which is provided by the invention;
FIG. 3 is a sectional view of a movable groove structure of a municipal engineering protective fence structure with good protection effect, which is provided by the invention;
FIG. 4 is a structural section view of a rotating groove of a municipal engineering protective fence structure with good protection effect, which is provided by the invention;
fig. 5 is a structural section view of a municipal engineering protective fence structural balance block with a good protection effect.
In the figure: 1. a hurdle body; 2. supporting legs; 3. a base; 4. a cavity; 5. a warning light; 6. a guard bar; 7. a transverse plate; 8. a rotating tank; 9. a counterbalance; 10. a bearing; 11. a bump; 12. a threaded pipe; 13. a top block; 14. a rotating electric machine; 15. a stabilizer bar; 16. a groove; 17. a sleeve; 18. a spring; 19. a moving block; 20. a balancing tank; 21. a movable groove; 22. a support plate; 23. a sliding cavity; 24. a placement chamber; 25. a central shaft; 26. a pulley; 27. a stop block.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a municipal engineering protective fence structure with good protection effect comprises a fence body 1, wherein the left side and the right side of the bottom of the fence body 1 are fixedly connected with supporting legs 2, the bottom end of each supporting leg 2 is fixedly connected with a base 3, the top of the fence body 1 is provided with two groups of warning lamps 5, the inside of the fence body 1 is provided with a rotating groove 8, the inside of the fence body 1 is provided with a groove 16, the groove 16 is communicated with the rotating groove 8, the left side and the right side of the rotating groove 8 are provided with cavities 4, the inner wall of the bottom of the groove 16 is fixedly connected with a rotating motor 14, the output end of the rotating motor 14 is fixedly connected with the bottom end of a threaded pipe 12, the top end of the threaded pipe 12 is fixedly connected with the middle part of a bearing 10, the top of the bearing 10 is fixedly connected with the inner wall of the top of the rotating groove 8, the outer side of the threaded, the inner part of the cavity 4 is connected with a supporting plate 22 in a sliding way, the top and the bottom on the right side of the supporting plate 22 are fixedly connected with transverse plates 7, a plurality of groups of protective rods 6 are fixedly connected between the two groups of transverse plates 7, the front side and the rear side of the cavity 4 are respectively provided with a movable groove 21, the front side and the rear side of the supporting plate 22 are respectively fixedly connected with a movable block 19, the left side of each movable block 19 is fixedly connected with the right end of a spring 18, the left end of each spring 18 is fixedly connected with the inner wall on the left side of each movable groove 21, through arranging the springs 18, when the top block 13 pushes against the lug 11, each spring 18 is stretched by the corresponding movable block 19, when the top block 13 is separated from the lug 11, the springs 18 drive the transverse plates 7 to enter the cavity 4 in a mode of driving the movable blocks 19 to contract, the secondary work of the device, and the lug 11 is located the top of kicking block 13, through the rotation of opening screw pipe 12 behind the rotating electrical machines 14, and then make sleeve 17 drive kicking block 13 and reciprocate, and the removal of kicking block 13 will push up and move lug 11, thereby make lug 11 drive backup pad 22 and remove, the removal of backup pad 22 will drive diaphragm 7 and protective rod 6 displacement, thereby reach the effect of quick extension, and diaphragm 7 and protective rod 6 can not lose the guard action because of the collision, make the device can be quick and stable completion extension.
In the present invention, in order to maintain the balance of the sleeve 17 in the movement, a sliding cavity 23 is opened at the front side of the rotary groove 8, the stabilizer bar 15 is fixedly connected to the outside of the sleeve 17, and the stabilizer bar 15 is slidably connected in the sliding cavity 23, so that the balance of the sleeve 17 in the movement can be maintained by the stabilizer bar 15.
In the present invention, in order to stably move the support plate 22 and the lateral plate 7, the thickness of the support plate 22 is adapted to the thickness of the lateral plate 7, and the thickness of the support plate 22 is adapted to the width of the inner wall of the cavity 4, so that the support plate 22 and the lateral plate 7 can be stably moved.
In the invention, in order to keep the moving balance of the transverse plate 7, the top and the bottom of the cavity 4 are both provided with the balance grooves 20, the top of the transverse plate 7 is fixedly connected with the balance weight 9, and the balance weight 9 is connected in the balance grooves 20 in a sliding way, so that the moving balance of the transverse plate 7 can be kept through the balance weight 9.
In the invention, in order to make the balance weight 9 move smoothly, the inside of the balance weight 9 is provided with the placing cavity 24, the inner wall of the placing cavity 24 is fixedly connected with the central shaft 25, the outer side of the central shaft 25 is sleeved with the pulley 26, and the outer side of the pulley 26 is contacted with the inner wall of the balance groove 20, so that the movement of the balance weight 9 can be kept smoothly through the pulley 26.
In the present invention, in order to prevent the pulley 26 from being misaligned, two sets of stoppers 27 are fixedly connected to the outside of the central shaft 25, and the two sets of stoppers 27 are respectively positioned on the front and rear sides of the pulley 26, so that the pulley 26 can be prevented from being misaligned by the stoppers 27.
In the invention, in order to make the top block 13 stably push against the movable lug 11, the lug 11 and the top block 13 are both arc-shaped blocks, and the thickness of the top block 13 is larger than that of the lug 11, so that the top block 13 can stably push against the movable lug 11.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When the device is used, the rotating motor 14 is started to enable the output end of the rotating motor to drive the threaded pipe 12 to rotate forwards, the sleeve 17 screwed on the outer side of the threaded pipe 12 can drive the ejector block 13 to move upwards when the threaded pipe 12 rotates forwards, the ejector block 13 moves upwards to be in contact with the lug 11 and push against the lug 11, so that the lug 11 drives the support plate 22 to move towards the outside of the cavity 4, the support plate 22 moves to drive the transverse plate 7 and the protective rod 6, the spring 18 is stretched by the moving block 19, the transverse plate 7 and the protective rod 6 rapidly expand the protection range of the device, the transverse plate 7 and the protective rod 6 cannot expand or fail due to collision when the protection range of the device is extended, the normal operation of the device is guaranteed, when the transverse plate 7 needs to be contracted, the output end of the rotating motor 14 is controlled to rotate reversely, so that the sleeve 17 is driven to move downwards by the reverse rotation of the threaded pipe 12, the sleeve 17, when the convex block 11 is not pushed by the pushing block 13, the spring 18 drives the transverse plate 7 to enter the cavity 4 by driving the moving block 19 to contract, thereby ensuring the secondary work of the device and completing the storage.
To sum up, this municipal works protective fence structure that protecting effect is good, through the rotation of opening screw pipe 12 behind the rotating electrical machines 14, and then make sleeve pipe 17 drive kicking block 13 reciprocate, and the removal of kicking block 13 will push up and move lug 11 and remove, thereby make lug 11 drive backup pad 22 and remove, the removal of backup pad 22 will drive diaphragm 7 and protective rod 6 displacement, thereby reach the effect of quick extension, and diaphragm 7 and protective rod 6 can not lose the guard action because of the collision, make the device can be quick and stable completion extension.
This municipal works guard fence structure that protecting effect is good, through setting up spring 18, and then when kicking block 13 top moves lug 11, spring 18 receives the extension of movable block 19, and when kicking block 13 breaks away from lug 11, spring 18 will drive diaphragm 7 through the mode that drives movable block 19 shrink and get into in the cavity 4, has ensured the device's once more work, has increased the device's life, and spring 18 low in cost, suitable popularization.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a municipal works guard fence structure that protecting effect is good, includes the fence body (1), its characterized in that: the guardrail comprises a guardrail body (1), supporting legs (2) are fixedly connected to the left side and the right side of the bottom of the guardrail body (1), a base (3) is fixedly connected to the bottom ends of the supporting legs (2), two groups of warning lamps (5) are arranged at the top of the guardrail body (1), a rotating groove (8) is formed in the guardrail body (1), a groove (16) is formed in the guardrail body (1), the groove (16) is communicated with the rotating groove (8), a cavity (4) is formed in the left side and the right side of the rotating groove (8), a rotating motor (14) is fixedly connected to the inner wall of the bottom of the groove (16), the output end of the rotating motor (14) is fixedly connected with the bottom end of a threaded pipe (12), the top end of the threaded pipe (12) is fixedly connected with the middle of a bearing (10), the top of the bearing (10) is fixedly connected to the inner wall of the top of the rotating groove (8), and, two groups of ejector blocks (13) are fixedly connected with the outer side of the sleeve (17), the ejector blocks (13) are connected in the cavity (4) in a sliding way, a supporting plate (22) is connected inside the cavity (4) in a sliding manner, transverse plates (7) are fixedly connected to the top and the bottom of the right side of the supporting plate (22), a plurality of groups of protective rods (6) are fixedly connected between the two groups of transverse plates (7), the front side and the rear side of the cavity (4) are both provided with movable grooves (21), the front side and the rear side of the supporting plate (22) are both fixedly connected with movable blocks (19), the left side of the moving block (19) is fixedly connected with the right end of the spring (18), the left end of the spring (18) is fixedly connected with the inner wall of the left side of the movable groove (21), the left side of the supporting plate (22) is fixedly connected with a convex block (11), and the convex block (11) is positioned above the top block (13).
2. The municipal engineering protective fence structure with good protection effect according to claim 1, characterized in that: the front side of swivelling chute (8) is opened and is equipped with slip chamber (23), the outside fixedly connected with stabilizer bar (15) of sleeve pipe (17), stabilizer bar (15) sliding connection is in slip chamber (23).
3. The municipal engineering protective fence structure with good protection effect according to claim 1, characterized in that: the thickness of backup pad (22) and the thickness looks adaptation of diaphragm (7), the thickness of backup pad (22) and the width looks adaptation of cavity (4) inner wall.
4. The municipal engineering protective fence structure with good protection effect according to claim 1, characterized in that: the top and the bottom of cavity (4) have all been seted up compensating groove (20), the top fixedly connected with balancing piece (9) of diaphragm (7), balancing piece (9) sliding connection is in compensating groove (20).
5. The municipal engineering protective fence structure with good protection effect according to claim 4, wherein: the inside of balancing piece (9) has been seted up and has been placed chamber (24), the inner wall fixedly connected with center pin (25) of placing chamber (24), pulley (26) have been cup jointed in the outside of center pin (25), the outside of pulley (26) contacts with the inner wall of compensating groove (20).
6. The municipal engineering protective fence structure with good protection effect according to claim 5, wherein: two groups of blocking blocks (27) are fixedly connected to the outer side of the central shaft (25), and the two groups of blocking blocks (27) are respectively positioned on the front side and the rear side of the pulley (26).
7. The municipal engineering protective fence structure with good protection effect according to claim 1, characterized in that: the convex block (11) and the top block (13) are both arc-shaped blocks, and the thickness of the top block (13) is larger than that of the convex block (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601564.2A CN112709489A (en) | 2020-12-29 | 2020-12-29 | Municipal works guard fence structure that protecting effect is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601564.2A CN112709489A (en) | 2020-12-29 | 2020-12-29 | Municipal works guard fence structure that protecting effect is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709489A true CN112709489A (en) | 2021-04-27 |
Family
ID=75546843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011601564.2A Pending CN112709489A (en) | 2020-12-29 | 2020-12-29 | Municipal works guard fence structure that protecting effect is good |
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| Country | Link |
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| CN (1) | CN112709489A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494261A (en) * | 1995-01-19 | 1996-02-27 | Gandara Systems | Corrugated privacy fence and method of fabrication thereof |
| CN207392884U (en) * | 2017-08-23 | 2018-05-22 | 青岛中投创新技术转移有限公司 | A kind of construction foundation pit guardrail |
| CN207406121U (en) * | 2017-08-31 | 2018-05-25 | 广州市翔通交通设施工程有限公司 | A kind of municipal administration protective fence |
| CN108222872A (en) * | 2018-03-26 | 2018-06-29 | 成都知睿科技有限公司 | A kind of petroleum drilling and mining oil well detection device |
| CN109779387A (en) * | 2019-03-14 | 2019-05-21 | 王红 | A kind of municipal works protective fence structure |
| CN211524365U (en) * | 2019-12-24 | 2020-09-18 | 邢台市政建设集团股份有限公司 | Retaining is enclosed in municipal works construction warning |
-
2020
- 2020-12-29 CN CN202011601564.2A patent/CN112709489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494261A (en) * | 1995-01-19 | 1996-02-27 | Gandara Systems | Corrugated privacy fence and method of fabrication thereof |
| CN207392884U (en) * | 2017-08-23 | 2018-05-22 | 青岛中投创新技术转移有限公司 | A kind of construction foundation pit guardrail |
| CN207406121U (en) * | 2017-08-31 | 2018-05-25 | 广州市翔通交通设施工程有限公司 | A kind of municipal administration protective fence |
| CN108222872A (en) * | 2018-03-26 | 2018-06-29 | 成都知睿科技有限公司 | A kind of petroleum drilling and mining oil well detection device |
| CN109779387A (en) * | 2019-03-14 | 2019-05-21 | 王红 | A kind of municipal works protective fence structure |
| CN211524365U (en) * | 2019-12-24 | 2020-09-18 | 邢台市政建设集团股份有限公司 | Retaining is enclosed in municipal works construction warning |
Non-Patent Citations (1)
| Title |
|---|
| 高宏伟: "《电子封装工艺与装备技术基础教程》", 30 June 2017, 西安电子科技大学出版社 * |
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