CN114648911A - Civil engineering teaching is with steel structure connection model presentation device of protection type - Google Patents
Civil engineering teaching is with steel structure connection model presentation device of protection type Download PDFInfo
- Publication number
- CN114648911A CN114648911A CN202210256134.4A CN202210256134A CN114648911A CN 114648911 A CN114648911 A CN 114648911A CN 202210256134 A CN202210256134 A CN 202210256134A CN 114648911 A CN114648911 A CN 114648911A
- Authority
- CN
- China
- Prior art keywords
- steel column
- fastener
- civil engineering
- fixed
- plate
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 210000001503 joint Anatomy 0.000 abstract description 8
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/04—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of buildings
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
Abstract
The invention relates to the technical field of steel structure connection for civil engineering teaching, in particular to a protective steel structure connection model demonstration device for civil engineering teaching, which comprises a steel column, wherein a connecting piece is arranged on the side wall of the steel column; anti-dislocation mechanism, anti-dislocation mechanism includes the fastener, the fastener card is established at the steel column outer wall, the inside of fastener has been seted up and has been accomodate the chamber, and accomodate the intracavity portion and insert and be equipped with the picture peg, the lateral wall of fastener is fixed with the connecting plate, and the connecting plate one side of keeping away from the fastener is provided with the staple bolt, the inside double-end motor that has erect of staple bolt, double-end motor's both ends swing joint has the screw rod. According to the invention, the inserting plate drives the connecting piece to move synchronously, so that the splicing of the connecting piece and the steel column is pushed without manual pushing, the phenomenon that splicing positioning is inaccurate due to deviation caused by pushing of a demonstrator in the manual pushing process is avoided, the splicing dislocation of the connecting piece is prevented, the butt joint protection of the steel column and the connecting piece is realized, and the stabilizing effect is better.
Description
Technical Field
The invention relates to the technical field of steel structure connection for civil teaching, in particular to a protective steel structure connection model demonstration device for civil engineering teaching.
Background
Civil engineering is a general name of scientific technology for building various land engineering facilities, the fundamental problem to be solved by civil engineering is engineering safety, a structure can resist various natural or artificial acting forces, the civil engineering major aims at cultivating and adapting to the requirements of modern construction, has solid basic theory and professional knowledge and strong practical capability, and can be used for designing road and bridge engineering, managing construction organization and managing operation and other advanced engineering technical talents, so that students can master the structure and mode of connecting civil steel structures in combination with a construction site.
The existing device is at the teaching in-process, need the equipment steel construction, demonstrate the student, thereby be convenient for student's manual operation, cultivate the practice ability that the steel part connects the equipment, promote connecting piece and steel column concatenation equipment, but current model demonstration equipment generally does not set up the push mechanism to the connecting piece, need manual propelling movement connecting piece, but manual propelling movement connecting piece easily causes the propelling movement slope, if the connecting piece slope then difficult with the steel column butt joint, cause the dislocation of steel column and connecting piece butt joint, the accuracy of butt joint is relatively poor, the stability of device has been reduced, consequently, need for a civil engineering teaching to solve above-mentioned problem with the steel structure connection model presentation device of protection type.
Disclosure of Invention
The invention aims to provide a protective steel structure connection model demonstration device for civil engineering teaching, which aims to solve the problems that the existing device provided in the background art is not provided with a pushing mechanism for a connecting piece, the connecting piece needs to be pushed manually, but pushing inclination is easily caused by manually pushing the connecting piece, if the connecting piece is inclined, the connecting piece is difficult to be in butt joint with a steel column, butt joint of the steel column and the connecting piece is staggered, and butt joint accuracy is poor.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a teaching of civil engineering is with steel structure connection model presentation device of protection type, includes:
the side wall of the steel column is provided with a connecting piece;
the anti-dislocation mechanism comprises a clamping piece, wherein the clamping piece is clamped on the outer wall of a steel column, a containing cavity is formed in the clamping piece, an inserting plate is inserted in the containing cavity, a connecting plate is fixed on the side wall of the clamping piece, a hoop is arranged on one side, away from the clamping piece, of the connecting plate, a double-head motor is erected in the hoop, two ends of the double-head motor are movably connected with screws, screw sleeves are in threaded connection with the outer parts of the screws, first connecting rods are fixed on the outer walls of the screw sleeves, a first rotating plate is movably connected to one side, close to the steel column, of the outer parts of the first connecting rods, two groups of first rotating plates are movably connected with second connecting rods, the second connecting rods are fixed on the outer wall of the clamping piece, a second rotating plate is movably connected to one side, away from the steel column, of the outer parts of the first connecting rods, the two groups of second rotating plates are movably connected through third connecting rods, and the third connecting rods are fixed on the outer wall of the inserting plate, the outer wall of the clamping piece is provided with a control switch, and the top of the inserting plate is provided with a supporting plate.
Preferably, the middle end of the inside of the inserting plate is in threaded connection with a rotating rod, the top of the rotating rod is movably connected with the bottom of the supporting plate through a bearing, positioning rods are inserted into two sides of the inside of the inserting plate, and the tops of the positioning rods are fixed to the bottom of the supporting plate.
Preferably, the both sides at layer board top are provided with splint, and the bottom of splint passes through second slider and layer board sliding connection, the top of splint is fixed with the connecting block, and is two sets of be provided with the spring between the connecting block, and the both ends of spring are fixed on the connecting block surface.
Preferably, the two sides inside the supporting plate are provided with limiting sliding grooves corresponding to the second sliding blocks.
Preferably, the two sides of the inserting plate are connected with the containing cavity in a sliding mode through the first sliding blocks, and sliding openings corresponding to the first sliding blocks are formed in the two sides of the containing cavity.
Preferably, a first sleeve ring is fixed on one side, close to the steel column, of the first rotating plate, the first sleeve ring is sleeved outside the second connecting rod, a second sleeve ring is fixed on one side, far away from the steel column, of the first rotating plate, the second sleeve ring is sleeved outside the first connecting rod, one side, close to the steel column, of the second rotating plate is fixed on the outer wall of the second sleeve ring, a third sleeve ring is fixed on one side, far away from the steel column, of the second rotating plate, and the third sleeve ring is sleeved outside the third connecting rod.
Preferably, the two groups of clamping plates are symmetrically designed, rubber bumps are glued on the inner walls of the clamping plates, and the rubber bumps are uniformly distributed on the surfaces of the clamping plates.
Compared with the prior art, the invention has the beneficial effects that:
the protective steel structure connection model demonstration device for civil engineering major teaching is provided with an anti-dislocation mechanism, a double-end shaft of a double-end motor starts to rotate after working, a screw rod rotates, a threaded sleeve moves towards a direction far away from the double-end motor, a plugboard is pulled to move towards a direction close to a steel column through a first rotating plate and a second rotating plate, the plugboard gradually contracts into the containing cavity to realize the containing of the plugboard, the plugboard drives a supporting plate to move synchronously, the supporting plate drives a connecting piece to move synchronously, the stable pushing operation of the connecting piece is realized, the dislocation is prevented, through the design, the double-end motor works to control the rotation of the screw rod, the first rotating plate and the second rotating plate are folded, so that the plugboard is pushed, the connecting piece is driven to move synchronously through the plugboard, the splicing of the connecting piece and the steel column is pushed, the manual pushing is not needed, and the inaccuracy of splicing positioning caused by the deviation generated by the pushing of a demonstrator is avoided in the manual pushing process, the dislocation of connecting piece concatenation is prevented, realizes the protection of steel column and connecting piece butt joint, and it is better to stabilize the effect, has improved the stability of device.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic side view in cross section of a partial structure of a connector, an anti-dislocation mechanism and a splint of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the structure at B in FIG. 2 according to the present invention;
FIG. 5 is a schematic sectional view of a partial structure of a steel column, a connecting member, an anti-dislocation mechanism and a connecting block according to the present invention;
FIG. 6 is an enlarged view of the structure at C in FIG. 5 according to the present invention.
In the figure: 1. a steel column; 2. a connecting member; 3. a dislocation prevention mechanism; 31. a fastener; 32. a receiving cavity; 33. inserting plates; 34. a first slider; 35. a connecting plate; 36. hooping; 37. a double-headed motor; 38. a screw; 39. a threaded sleeve; 41. a first connecting rod; 42. a first rotating plate; 43. a second connecting rod; 44. a second rotating plate; 45. a third connecting rod; 46. a control switch; 51. a support plate; 52. a splint; 53. a second slider; 54. a limiting chute; 55. connecting blocks; 56. a spring; 57. positioning a rod; 58. a rotating rod.
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. 1-6, an embodiment of the present invention is shown:
the utility model provides a teaching of civil engineering is with steel structure connection model presentation device of protection type, includes:
the side wall of the steel column 1 is provided with a connecting piece 2;
the anti-dislocation mechanism 3 comprises a clamping piece 31, the clamping piece 31 is clamped on the outer wall of a steel column 1, a containing cavity 32 is formed in the clamping piece 31, an inserting plate 33 is inserted in the containing cavity 32, a rotating rod 58 is connected to the middle end of the inner part of the inserting plate 33 in a threaded manner, the top of the rotating rod 58 is movably connected with the bottom of a supporting plate 51 through a bearing, positioning rods 57 are inserted on two sides of the inner part of the inserting plate 33, the top of each positioning rod 57 is fixed to the bottom of the supporting plate 51, through the design, the supporting plate 51 is supported, the height position of the supporting plate 51 is convenient to adjust, so that the height of the supporting plate 51 is adjusted according to the height of a connecting piece 2, clamping plates 52 are arranged on two sides of the top of the supporting plate 51, the bottom of each clamping plate 52 is connected with the supporting plate 51 in a sliding manner through a second sliding block 53, limiting sliding chutes 54 corresponding to the second sliding blocks 53 are formed in two sides of the inner part of the supporting plate 51, and the second sliding blocks 53 are limited through the design, thereby it is spacing to the removal of splint 52, make splint 52's removal more stable, splint 52's top is fixed with connecting block 55, be provided with spring 56 between two sets of connecting block 55, and the both ends of spring 56 are fixed on the connecting block 55 surface, through this design, it is spacing to realize the centre gripping of connecting piece 2, make the centre gripping of connecting piece 2 more stable, the lateral wall of fastener 31 is fixed with connecting plate 35, and one side that fastener 31 was kept away from to connecting plate 35 is provided with staple bolt 36, the both sides of picture peg 33 are through first slider 34 and accomodate chamber 32 sliding connection, accomodate the inside both sides in chamber 32 and seted up the spout that corresponds with first slider 34, through this design, it is spacing to picture peg 33, make the shrink of picture peg 33 with shift out more smoothly and stable, stable effect is better.
The two groups of clamping plates 52 are symmetrically designed, rubber bumps are glued on the inner walls of the clamping plates 52 and are uniformly distributed on the surfaces of the clamping plates 52, the two groups of clamping plates 52 are symmetrically designed, the rubber bumps are glued on the inner walls of the clamping plates 52 and are uniformly distributed on the surfaces of the clamping plates 52, through the design, the friction force between the clamping plates 52 and the connecting piece 2 is increased, so that the clamping stabilizing effect of the clamping plates 52 on the connecting piece 2 is better, the double-headed motor 37 is erected inside the hoop 36, two ends of the double-headed motor 37 are movably connected with the screw rods 38, the screw sleeves 39 are in threaded connection with the outer parts of the screw rods 38, the outer walls of the screw sleeves 39 are fixedly provided with the first connecting rods 41, one sides, close to the steel columns 1, of the outer parts of the first connecting rods 41 are movably connected with the first rotating plates 42, the two groups of first rotating plates 42 are movably connected with the second connecting rods 43, the second connecting rods 43 are fixed on the outer walls of the clamping pieces 31, one sides, far away from the outer parts of the steel columns 1, are movably connected with the second rotating plates 44, two groups of second rotating plates 44 are movably connected through a third connecting rod 45, the third connecting rod 45 is fixed on the outer wall of the inserting plate 33, the outer wall of the clamping piece 31 is provided with a control switch 46, one side of the first rotating plate 42 close to the steel column 1 is fixed with a first lantern ring, and the first sleeve ring is sleeved outside the second connecting rod 43, the second sleeve ring is fixed on one side of the first rotating plate 42 far away from the steel column 1, and the second sleeve is sleeved outside the first connecting rod 41, one side of the second rotating plate 44 close to the steel column 1 is fixed on the outer wall of the second sleeve, one side of the second rotating plate 44 far from the steel column 1 is fixed with a third sleeve, and the third sleeve is sleeved outside the third connecting rod 45, through the design, the screw sleeve 39 moves to pull the first rotating plate 42 and the second rotating plate 44 to rotate through the first connecting rod 41, so that the first rotating plate 42 and the second rotating plate 44 can rotate conveniently, and the supporting plate 51 is erected on the top of the inserting plate 33.
The working principle is as follows: when the connecting piece 2 needs to be placed, firstly, the two groups of connecting blocks 55 are pulled in the direction away from the spring 56, the connecting blocks 55 drive the clamping plates 52 to move synchronously, the clamping plates 52 drive the second sliding blocks 53 to slide in the limiting sliding grooves 54, the spring 56 is in a stretching and force-storing state at the moment, then the connecting piece 2 is placed between the two groups of clamping plates 52, the connecting blocks 55 are loosened, the spring 56 contracts, and the clamping plates 52 abut against the connecting piece 2 to realize clamping operation.
When the connecting pieces 2 with different heights need to be placed, the rotating rod 58 is rotated, the rotating rod 58 pushes the supporting plate 51 to move under the matching of the threads on the outer wall of the rotating rod 58 and the threads inside the inserting plate 33 until the supporting plate 51 moves to the required height, and the height adjusting operation of the supporting plate 51 is realized according to the height of the connecting pieces 2.
Then a power line is connected, a control switch 46 is turned on, the control switch 46 controls the double-head motor 37 to work, a double-head shaft of the double-head motor 37 starts to rotate after working, the double-head motor 37 enables the screw rod 38 to rotate, the screw rod 38 rotates, the screw sleeve 39 moves in a direction away from the double-head motor 37 under the matching of the outer wall thread of the screw rod 38 and the inner wall thread of the screw sleeve 39, the screw sleeve 39 drives the first connecting rod 41 to synchronously move, under the pulling of the first connecting rod 41, the first rotating plate 42 and the second rotating plate 44 rotate, the second connecting rod 43 and the third connecting rod 45 respectively assist the rotation of the first rotating plate 42 and the second rotating plate 44 until the screw sleeve 39 moves to one end of the screw rod 38 away from the double-head motor 37, the second rotating plate 44 pulls the inserting plate 33 to move in a direction close to the steel column 1 through the third connecting rod 45, the inserting plate 33 gradually shrinks into the accommodating cavity 32, the first sliding block 34 slides in a sliding port in the accommodating cavity 32, the operation of accomodating of picture peg 33 is realized, and picture peg 33 drives layer board 51 synchronous motion, and layer board 51 drives connecting piece 2 synchronous motion, realizes the stable propelling movement operation of connecting piece 2, prevents the dislocation, and the operation ends here.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a teaching of civil engineering is with steel structure connection model presentation device of protection type which characterized in that includes:
the steel column comprises a steel column (1), wherein a connecting piece (2) is arranged on the side wall of the steel column (1);
anti-dislocation mechanism (3), anti-dislocation mechanism (3) includes fastener (31), fastener (31) card is established at steel column (1) outer wall, the inside of fastener (31) has been seted up and has been accomodate chamber (32), and accomodate chamber (32) inside and insert and be equipped with picture peg (33), the lateral wall of fastener (31) is fixed with connecting plate (35), and one side that fastener (31) were kept away from in connecting plate (35) is provided with staple bolt (36), staple bolt (36) have been erect to inside, the both ends swing joint of double-end motor (37) has screw rod (38), and screw rod (38) outside threaded connection has swivel nut (39), the outer wall of swivel nut (39) is fixed with head rod (41), and one side swing joint that head rod (41) outside is close to steel column (1) has first rotation board (42), two sets of first rotation board (42) and second connecting rod (43) swing joint, fastener (31) outer wall is fixed in second connecting rod (43), one side swing joint that steel column (1) was kept away from in head rod (41) outside has second rotor plate (44), and is two sets of second rotor plate (44) are through third connecting rod (45) swing joint, and third connecting rod (45) fix in picture peg (33) outer wall, fastener (31) outer wall is provided with control switch (46), layer board (51) have been erect at the top of picture peg (33).
2. The steel structure connection model presentation device of protection type for teaching of civil engineering according to claim 1, characterized in that: the middle end of the interior of the inserting plate (33) is connected with a rotating rod (58) in a threaded mode, the top of the rotating rod (58) is movably connected with the bottom of the supporting plate (51) through a bearing, positioning rods (57) are inserted into two sides of the interior of the inserting plate (33), and the tops of the positioning rods (57) are fixed to the bottom of the supporting plate (51).
3. The teaching of civil engineering is with steel structure connection model presentation device of protection type according to claim 2, characterized in that: the both sides at layer board (51) top are provided with splint (52), and the bottom of splint (52) passes through second slider (53) and layer board (51) sliding connection, the top of splint (52) is fixed with connecting block (55), and is two sets of be provided with spring (56) between connecting block (55), and the both ends of spring (56) are fixed on connecting block (55) surface.
4. The teaching of civil engineering is with steel structure connection model presentation device of protection type according to claim 3, characterized in that: and two sides in the supporting plate (51) are provided with limiting sliding grooves (54) corresponding to the second sliding blocks (53).
5. The steel structure connection model presentation device of protection type for teaching of civil engineering according to claim 1, characterized in that: the two sides of the inserting plate (33) are connected with the containing cavity (32) in a sliding mode through the first sliding block (34), and sliding openings corresponding to the first sliding block (34) are formed in the two sides of the inside of the containing cavity (32).
6. The steel structure connection model presentation device of protection type for teaching of civil engineering according to claim 1, characterized in that: one side of the first rotating plate (42) close to the steel column (1) is fixed with a first sleeve ring, the first sleeve ring is sleeved outside the second connecting rod (43), one side of the first rotating plate (42) far away from the steel column (1) is fixed with a second sleeve ring, the second sleeve ring is sleeved outside the first connecting rod (41), one side of the second rotating plate (44) close to the steel column (1) is fixed on the outer wall of the second sleeve ring, one side of the second rotating plate (44) far away from the steel column (1) is fixed with a third sleeve ring, and the third sleeve ring is sleeved outside the third connecting rod (45).
7. The teaching of civil engineering is with steel structure connection model presentation device of protection type according to claim 3, characterized in that: the two groups of clamping plates (52) are symmetrically designed, rubber bumps are glued on the inner walls of the clamping plates (52), and the rubber bumps are uniformly distributed on the surfaces of the clamping plates (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256134.4A CN114648911A (en) | 2022-03-16 | 2022-03-16 | Civil engineering teaching is with steel structure connection model presentation device of protection type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256134.4A CN114648911A (en) | 2022-03-16 | 2022-03-16 | Civil engineering teaching is with steel structure connection model presentation device of protection type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114648911A true CN114648911A (en) | 2022-06-21 |
Family
ID=81992861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210256134.4A Pending CN114648911A (en) | 2022-03-16 | 2022-03-16 | Civil engineering teaching is with steel structure connection model presentation device of protection type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114648911A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264620A (en) * | 1993-03-15 | 1994-09-20 | Koa:Kk | Vertical automatic plumbing device for steel column |
| CN210563003U (en) * | 2019-04-03 | 2020-05-19 | 青岛瑞华泽建筑装饰有限公司 | Dislocation-preventing steel structure butt joint |
| CN213597524U (en) * | 2020-06-23 | 2021-07-02 | 苏州建设（集团）有限责任公司 | Positioning and adjusting device for steel column on-site splicing |
-
2022
- 2022-03-16 CN CN202210256134.4A patent/CN114648911A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264620A (en) * | 1993-03-15 | 1994-09-20 | Koa:Kk | Vertical automatic plumbing device for steel column |
| CN210563003U (en) * | 2019-04-03 | 2020-05-19 | 青岛瑞华泽建筑装饰有限公司 | Dislocation-preventing steel structure butt joint |
| CN213597524U (en) * | 2020-06-23 | 2021-07-02 | 苏州建设（集团）有限责任公司 | Positioning and adjusting device for steel column on-site splicing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209760253U (en) | Foundation pit supporting structure for excavation of foundation pit | |
| CN112343332B (en) | Fastening system of concrete rectangular column template and construction method of concrete column | |
| CN114648911A (en) | Civil engineering teaching is with steel structure connection model presentation device of protection type | |
| CN210825323U (en) | A installation auxiliary device for municipal administration street lamp push pipe engineering | |
| CN212361543U (en) | Projection arrangement of slide adjusting formula teaching | |
| CN219221752U (en) | Construction auxiliary device | |
| CN217326412U (en) | Structure is linked with support frame to construction of building subject | |
| CN217028232U (en) | Building reinforcing apparatus suitable for wall body is restoreed | |
| CN211923569U (en) | Accurate positioning tool of assembled building foundation post muscle | |
| CN213539949U (en) | Combined spliced glass fiber reinforced plastic fence | |
| CN220434227U (en) | Concrete building template for civil engineering construction | |
| CN221880844U (en) | Electronic information board fixing and supporting device | |
| CN219027053U (en) | Skirtboard processingequipment for concrete pipe pile | |
| CN110700566A (en) | Building concrete pouring molding steel template | |
| CN209514925U (en) | A kind of height-adjustable teaching display board | |
| CN220336248U (en) | Frame roof beam fixed establishment | |
| CN113250094B (en) | Highway bridge medium design steel case roof beam handing equipment | |
| CN216690380U (en) | Building reinforcing device for urban planning | |
| CN112331040A (en) | Presentation device for physical teaching | |
| CN221592425U (en) | Foldable portable measuring rod for mapping | |
| CN218153210U (en) | Multifunctional demonstration instrument | |
| CN215801181U (en) | Temporary indication board convenient to move for municipal highway bridge construction | |
| CN219638413U (en) | Building engineering assembled construction template | |
| CN220538345U (en) | Highway engineering template bearing structure | |
| CN219120169U (en) | Fast assembly's teaching display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |