CN214963875U - Drawing support for building engineering - Google Patents
Drawing support for building engineering Download PDFInfo
- Publication number
- CN214963875U CN214963875U CN202120970150.0U CN202120970150U CN214963875U CN 214963875 U CN214963875 U CN 214963875U CN 202120970150 U CN202120970150 U CN 202120970150U CN 214963875 U CN214963875 U CN 214963875U
- Authority
- CN
- China
- Prior art keywords
- rod
- moving
- block
- groove
- moving 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Tents Or Canopies (AREA)
Abstract
The utility model discloses a graph paper support for building engineering, comprising a main body, the bottom of main part is rotated and is connected with four bracing pieces, the bottom of main part is equipped with fixed establishment, the top of main part is equipped with first telescopic link, and the top of first telescopic link is equipped with the fixed plate, and the outside of fixed plate is rotated and is connected with four second telescopic links, and the one end of four second telescopic links all is equipped with fixture. The utility model discloses a with the rotatory expansion of four bracing pieces, make four bracing pieces can contact ground and make the device fixed, make the rotatory expansion of four second telescopic links again, the rotation angle of four second telescopic links of adjustment this moment, can make the plane angle that four second telescopic links formed change, pass through torsion spring's effect with the drawing at last, make first dwang buckle with the second dwang and be close to the fixed block, hold the drawing clamp on the fixed block, the observation of the drawing of being convenient for, after finishing using, can directly fold the device and receive and release, be convenient for remove.
Description
Technical Field
The utility model relates to a building tool technical field especially relates to a graph paper support for building engineering.
Background
The drawings are a method and very basic icons for construction drawings in building engineering, the construction drawings can represent the overall layout of engineering projects, the requirements of external shapes, internal arrangement, structural structures, internal and external decoration, material methods, equipment, construction and the like of buildings can be obtained on the drawings, the drawings are displayed, so that the drawings are generally fixed by using a display rack, but when an entity needs to be observed on a site, the display rack is not easy to carry and can only be observed through the handheld drawings, and the observation result is relatively influenced.
Through retrieval, chinese patent publication No. CN209750391U discloses a display device for building engineering that conveniently presss from both sides tight fixed drawing, including the bracing piece, the welding of the bottom of bracing piece has the ground awl head, and the other end movable mounting of bracing piece has the backup pad, and the outside sliding connection of bracing piece has first sliding sleeve, and the outside of first sliding sleeve is equipped with first adjust knob.
In the above-mentioned patent, the display device who conveniently presss from both sides tight fixed drawing for building engineering is whole heavier, is difficult for the transport, when needing to observe the entity on the factory, and is comparatively inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a paper support for construction engineering.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a graph paper support for building engineering, includes the main part, the bottom of main part is rotated and is connected with four bracing pieces, the bottom of main part is equipped with fixed establishment, the top of main part is equipped with first telescopic link, and the top of first telescopic link is equipped with the fixed plate, and the outside of fixed plate is rotated and is connected with four second telescopic links, and the one end of four second telescopic links all is equipped with fixture.
Further, the fixing mechanism includes a first moving rod, an elastic piece, a first moving block, a clamping block and a second moving block, first grooves are formed in four sides of the main body, the supporting rod is located inside the first grooves, a clamping groove is formed in one side of the supporting rod, a second groove and a third groove are formed in one side of the first groove of the main body, the first moving rod is located inside the second groove, the clamping block is located inside the third groove, a fourth groove is formed in the inner wall of the bottom end of the third groove of the main body, the second moving block is arranged in the fourth groove of the main body, the second moving block is in a pointed cone shape, the first moving block is arranged at the top end of the second moving block, the second moving rod is arranged at the bottom end of the second moving block, and two ends of the elastic piece are respectively welded with the second moving rod and the first moving rod.
Further, a second spring is arranged between the clamping block and the first moving block.
Furthermore, one side of the first moving block is inclined.
Further, a first spring is welded at one side of the first moving block, a fifth groove is formed in the bottom end of the second moving block, the second moving rod extends into the fifth groove, a third spring is arranged at the top end of the second moving rod, a connecting rod is welded at the bottom end of the second moving block, the connecting rod extends to the outside of the main body, and a pull ring is welded at the bottom end of the connecting rod.
Further, fixed establishment includes first dwang and second dwang, the one end welding of second telescopic link has the fixed block, the one end of fixed block with first dwang rotates to be connected, first dwang with the second dwang rotates to be connected, and the fixed block all is equipped with torsion spring with the junction of first dwang and second dwang.
Furthermore, the bottom end of the second rotating rod is provided with a rubber block.
Furthermore, the bottom of the supporting rod is welded with a convex block.
Further, the one end of second telescopic link is equipped with the axis of rotation, and ring groove has been seted up to one side of axis of rotation, sixth recess has all been seted up to the both sides of fixed plate, the fixed plate is equipped with the third carriage release lever in sixth recess department, and the bottom welding of third carriage release lever has the cardboard, and the top of cardboard is equipped with the fourth spring.
The utility model has the advantages that:
1. the four supporting rods and the four second telescopic rods are arranged, the four supporting rods are rotatably unfolded, so that the four supporting rods can be in contact with the ground to fix the device, the four second telescopic rods are rotatably unfolded, the rotating angles of the four second telescopic rods are adjusted at the moment, the plane angle formed by the four second telescopic rods can be changed, finally, a drawing is bent to be close to the fixed block under the action of a torsion spring, the drawing is clamped on the fixed block, the drawing is convenient to observe, and after the drawing is used, the device can be directly folded, folded and placed, and is convenient to move;
2. by arranging the clamping block, the second moving block in the shape of the pointed cone and the first moving rod, when the supporting rod rotates and expands, the first moving rod is pushed to enter the second groove, the first moving rod drives the second moving rod to move upwards through the elastic piece, the second moving rod pushes the first moving block to move transversely through the ascending of the second moving block in the shape of the pointed cone, the first moving block pushes the clamping block, the clamping block enters the clamping groove in one side of the supporting rod, the clamping block enables the supporting rod not to rotate at the moment, the supporting rod is fixed, and the device can be fixed on the ground;
3. the connecting rod, the second moving rod and the third spring are arranged, the pull ring is pulled, so that the connecting rod drives the second moving block to move downwards, the second moving rod slides in the fifth groove at the moment, the third spring is compressed, the second moving block descends and leaves the first moving block, the first spring pulls the first moving block, the first moving block pulls the fixture block, the fixture block leaves the clamping groove of the supporting rod, and the supporting rod can be rotated and retracted;
4. by arranging the second spring, the rubber block and the lug, the second spring can be compressed before the clamping block does not enter the clamping groove, after the supporting rod is unfolded, the clamping groove is in contact with the clamping block, the clamping block can enter the clamping groove through the second spring, the supporting rod is fixed, the rubber block can prevent a drawing from being punctured, meanwhile, the friction force between the rubber block and the drawing can be increased, the drawing can be better fixed, and the lug can enable the supporting rod to be better in contact with the ground and avoid slipping;
5. through setting up the cardboard, the cardboard can make the axis of rotation fixed, after the axis of rotation is fixed, can make the unable rotation of second telescopic link, the observation of the drawing of being convenient for, after the pulling third carriage release lever, the compression of fourth spring, the cardboard can leave the ring groove of axis of rotation simultaneously, makes the axis of rotation can the free rotation, the folding of the device of being convenient for.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a drawing support for construction engineering in embodiment 1;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of the portion B of FIG. 2;
FIG. 4 is a top sectional view of a fixing plate of a paper holder for construction engineering in accordance with embodiment 1;
fig. 5 is a front view of a support rod structure of a drawing support for construction engineering according to embodiment 1;
fig. 6 is a top structural sectional view of a fixing plate of a paper holder for construction work according to embodiment 2.
In the figure: the device comprises a main body, a supporting rod 2, a first telescopic rod 3, a fixed block 4, a first rotating rod 5, a second rotating rod 6, a second telescopic rod 7, a fixed plate 8, a first moving rod 9, an elastic piece 10, a connecting rod 11, a first spring 12, a first moving block 13, a second spring 14, a clamping block 15, a second moving block 16, a second moving block 17, a third spring 18, a third moving rod 19, a fourth spring 20, a clamping plate 21 and a rotating shaft 22.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1-5, a drawing support for construction engineering comprises a main body 1, four support rods 2 are rotatably connected to the bottom end of the main body 1, a fixing mechanism is arranged at the bottom end of the main body 1, a first telescopic rod 3 is arranged at the top end of the main body 1, a fixing plate 8 is arranged at the top end of the first telescopic rod 3, four second telescopic rods 7 are rotatably connected to the outer side of the fixing plate 8, a clamping mechanism is arranged at one end of each of the four second telescopic rods 7, the four support rods 2 are rotatably unfolded to enable the four support rods 2 to contact the ground to fix the device, the four second telescopic rods 7 are rotatably unfolded, the rotation angles of the four second telescopic rods 7 are adjusted at the moment to change the plane angle formed by the four second telescopic rods 7, finally, a drawing is fixed on the four second telescopic rods 7 by using the clamping mechanism, the drawing is convenient to observe, and after the drawing is used, the device can be folded and folded directly, and is convenient to move.
Wherein, the fixing mechanism comprises a first moving rod 9, an elastic piece 10, a first moving block 13, a clamping block 15 and a second moving block 16, four sides of the main body 1 are all provided with a first groove, the supporting rod 2 is positioned in the first groove, one side of the supporting rod 2 is provided with a clamping groove, the main body 1 is provided with a second groove and a third groove in one side of the first groove, the first moving rod 9 is positioned in the second groove, the clamping block 15 is positioned in the third groove, the main body 1 is provided with a fourth groove at the inner wall of the bottom end of the third groove, the main body 1 is provided with the second moving block 16 at the fourth groove, the second moving block 16 is in a taper shape, the top end of the second moving block 16 is provided with the first moving block 13, the bottom end of the second moving block 16 is provided with the second moving rod 17, two ends of the elastic piece 10 are respectively welded with the second moving rod 17 and the first moving rod 9, when the supporting rod 2 rotates and unfolds, the first moving rod 9 can be pushed to enter the second groove, the first moving rod 9 drives the second moving rod 17 to move upwards through the elastic piece 10, the second moving rod 17 ascends through the second moving block 16 in the shape of a pointed cone to push the first moving block 13 to move transversely, the first moving block 13 pushes the fixture block 15, the fixture block 15 enters the clamping groove in one side of the support rod 2, the fixture block 15 enables the support rod 2 to rotate inefficiently at the moment, the support rod 2 is fixed, and the device can be fixed on the ground.
Wherein, be equipped with second spring 14 between fixture block 15 and the first movable block 13, second spring 14 can be compressed before fixture block 15 has not got into the draw-in groove yet, and after bracing piece 2 expandes, the draw-in groove contact fixture block 15, second spring 14 can make fixture block 15 get into among the draw-in groove, fixes bracing piece 2.
One side of the first moving block 13 is inclined, so that the second moving block 16 in a taper shape can push the first moving block 13 to move transversely.
The first spring 12 is welded on one side of the first moving block 13, a fifth groove is formed in the bottom end of the second moving block 16, the second moving rod 17 extends into the fifth groove, the third spring 18 is arranged on the top end of the second moving rod 17, the connecting rod 11 is welded on the bottom end of the second moving block 16, the connecting rod 11 extends to the outside of the main body 1, a pull ring is welded on the bottom end of the connecting rod 11, the connecting rod 11 drives the second moving block 16 to move downwards by pulling the pull ring, the second moving rod 17 slides in the fifth groove at the moment, the third spring 18 is compressed, the second moving block 16 descends and leaves the first moving block 13, the first spring 12 pulls the first moving block 13, the first moving block 13 pulls the clamping block 15, the clamping block 15 leaves a clamping groove of the supporting rod 2, and the supporting rod 2 can be retracted in a rotating mode.
Wherein, fixed establishment includes first dwang 5 and second dwang 6, the one end welding of second telescopic link 7 has fixed block 4, the one end and the first dwang 5 of fixed block 4 rotate to be connected, first dwang 5 rotates with second dwang 6 to be connected, the fixed block 4 all is equipped with torsion spring with the junction of first dwang 5 and second dwang 6, effect through torsion spring makes first dwang 5 buckle with second dwang 6 and is close to fixed block 4, hold the picture on fixed block 6.
Wherein, the bottom of second dwang 6 is equipped with the block rubber, and the block rubber can avoid the drawing to be stabbed, can increase the frictional force with the drawing simultaneously, makes the better fixed of drawing.
Wherein, the bottom welding of bracing piece 2 has the lug, and the lug makes bracing piece 2 can better contact ground, avoids skidding.
The working principle is as follows: the four supporting rods 2 are rotatably unfolded, so that the four supporting rods 2 can be in contact with the ground to fix the device, then the four second telescopic rods 7 are rotatably unfolded, the rotating angles of the four second telescopic rods 7 are adjusted at the moment, the plane angle formed by the four second telescopic rods 7 can be changed, finally, a drawing is bent to be close to the fixed block 4 through the action of a torsion spring, the drawing is clamped on the fixed block 6, the drawing is convenient to observe, and the device can be directly folded, folded and folded after being used, so that the device is convenient to move;
when the supporting rod 2 is rotated and unfolded, the first moving rod 9 is pushed to enter the inside of the second groove, the first moving rod 9 drives the second moving rod 17 to move upwards through the elastic piece 10, the second moving rod 17 ascends through the second moving block 16 in a taper shape to push the first moving block 13 to move transversely, the first moving block 13 pushes the fixture block 15, the fixture block 15 enters the clamping groove in one side of the supporting rod 2, at the moment, the fixture block 15 prevents the supporting rod 2 from rotating, the supporting rod 2 is fixed, and the device can be fixed on the ground;
through pulling the pull ring, the connecting rod 11 drives the second moving block 16 to move downwards, at the moment, the second moving rod 17 slides in the fifth groove, the third spring 18 is compressed, the second moving block 16 descends to leave the first moving block 13, the first spring 12 pulls the first moving block 13, the first moving block 13 pulls the fixture block 15, the fixture block 15 leaves the clamping groove of the supporting rod 2, and the supporting rod 2 can be rotated and retracted.
Example 2
Referring to fig. 6, a drawing support for building engineering, this embodiment compares in embodiment 1, in order to increase the practicality of device, the one end of second telescopic link 7 is equipped with axis of rotation 22, ring groove has been seted up to one side of axis of rotation 22, the sixth recess has all been seted up to the both sides of fixed plate 8, fixed plate 8 is equipped with third carriage release lever 19 in sixth recess department, the bottom welding of third carriage release lever 19 has cardboard 21, the top of cardboard 21 is equipped with fourth spring 20, can make axis of rotation 22 fixed through cardboard 21, after axis of rotation 22 is fixed, can make second telescopic link 7 unable rotation, the observation of the drawing of being convenient for, after pulling third carriage release lever 19, fourth spring 20 compresses, cardboard 21 can leave the ring groove of axis of rotation 22 simultaneously, make axis of rotation 22 can free rotation, be convenient for the folding of device.
The working principle is as follows: the four supporting rods 2 are rotatably unfolded, so that the four supporting rods 2 can be in contact with the ground to fix the device, then the four second telescopic rods 7 are rotatably unfolded, the rotating angles of the four second telescopic rods 7 are adjusted at the moment, the plane angle formed by the four second telescopic rods 7 can be changed, finally, a drawing is bent to be close to the fixed block 4 through the action of a torsion spring, the drawing is clamped on the fixed block 6, the drawing is convenient to observe, and the device can be directly folded, folded and folded after being used, so that the device is convenient to move;
when the supporting rod 2 is rotated and unfolded, the first moving rod 9 is pushed to enter the inside of the second groove, the first moving rod 9 drives the second moving rod 17 to move upwards through the elastic piece 10, the second moving rod 17 ascends through the second moving block 16 in a taper shape to push the first moving block 13 to move transversely, the first moving block 13 pushes the fixture block 15, the fixture block 15 enters the clamping groove in one side of the supporting rod 2, at the moment, the fixture block 15 prevents the supporting rod 2 from rotating, the supporting rod 2 is fixed, and the device can be fixed on the ground;
by pulling the pull ring, the connecting rod 11 drives the second moving block 16 to move downwards, at the moment, the second moving rod 17 slides in the fifth groove, the third spring 18 is compressed, the second moving block 16 descends to leave the first moving block 13, the first spring 12 pulls the first moving block 13, the first moving block 13 pulls the fixture block 15, the fixture block 15 leaves the clamping groove of the supporting rod 2, and the supporting rod 2 can rotate and be retracted;
can make axis of rotation 22 fixed through cardboard 21, axis of rotation 22 is fixed after, can make the unable rotation of second telescopic link 7, the observation of the drawing of being convenient for, after the third carriage release lever 19 of pulling, fourth spring 20 compresses, and cardboard 21 can leave axis of rotation 22's ring groove simultaneously, makes axis of rotation 22 can the free rotation, the folding of the device of being convenient for.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a graph paper support for building engineering, includes main part (1), its characterized in that, the bottom of main part (1) is equipped with four bracing pieces (2), the bottom of main part (1) is equipped with fixed establishment, the top of main part (1) is equipped with first telescopic link (3), and the top of first telescopic link (3) is equipped with fixed plate (8), and the outside of fixed plate (8) is equipped with four second telescopic links (7), and the one end of four second telescopic links (7) all is equipped with fixture.
2. The paper holder for construction engineering as claimed in claim 1, wherein the fixing mechanism comprises a first moving rod (9), a resilient strip (10), a first moving block (13), a clamping block (15) and a second moving block (16), wherein four sides of the main body (1) are provided with first grooves, the supporting rod (2) is located inside the first grooves, one side of the supporting rod (2) is provided with a clamping groove, the main body (1) is provided with a second groove and a third groove inside one side of the first grooves, the first moving rod (9) is located inside the second groove, the clamping block (15) is located inside the third groove, the main body (1) is provided with a fourth groove on the inner wall of the bottom end of the third groove, the main body (1) is provided with a second moving block (16) at the fourth groove, and the second moving block (16) is in a pointed cone shape, a first moving block (13) is arranged at the top end of the second moving block (16), a second moving rod (17) is arranged at the bottom end of the second moving block (16), and two ends of the elastic piece (10) are respectively and fixedly connected with the second moving rod (17) and the first moving rod (9).
3. The paper holder for construction engineering according to claim 2, wherein a second spring (14) is provided between the latch (15) and the first moving block (13).
4. The paper holder for construction work according to claim 3, wherein one side of the first moving block (13) is inclined.
5. The paper holder for construction engineering according to claim 4, wherein a first spring (12) is disposed on one side of the first moving block (13), a fifth groove is disposed at the bottom end of the second moving block (16), the second moving rod (17) extends into the fifth groove, a third spring (18) is disposed at the top end of the second moving rod (17), a connecting rod (11) is disposed at the bottom end of the second moving block (16), the connecting rod (11) extends to the outside of the main body (1), and a pull ring is disposed at the bottom end of the connecting rod (11).
6. The drawing paper support for building engineering according to claim 1, wherein the fixing mechanism comprises a first rotating rod (5) and a second rotating rod (6), one end of the second telescopic rod (7) is provided with a fixing block (4), one end of the fixing block (4) is connected with the first rotating rod (5) in a rotating manner, the first rotating rod (5) is connected with the second rotating rod (6) in a rotating manner, and the joint of the fixing block (4) and the first rotating rod (5) and the joint of the first rotating rod (5) and the second rotating rod (6) are both provided with a torsion spring.
7. A paper holder for buildings according to claim 6, characterized in that the bottom end of the second turning rod (6) is provided with a rubber block.
8. The paper holder for construction engineering according to claim 1, wherein the bottom end of the support rod (2) is provided with a projection.
9. The paper holder for building engineering according to any one of claims 1 to 8, wherein one end of the second telescopic rod (7) is provided with a rotating shaft (22), one side of the rotating shaft (22) is provided with a circular clamping groove, both sides of the fixed plate (8) are provided with sixth grooves, the fixed plate (8) is provided with a third moving rod (19) at the sixth groove, the bottom end of the third moving rod (19) is provided with a clamping plate (21), and the top end of the clamping plate (21) is provided with a fourth spring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120970150.0U CN214963875U (en) | 2021-05-08 | 2021-05-08 | Drawing support for building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120970150.0U CN214963875U (en) | 2021-05-08 | 2021-05-08 | Drawing support for building engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214963875U true CN214963875U (en) | 2021-12-03 |
Family
ID=79089453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120970150.0U Expired - Fee Related CN214963875U (en) | 2021-05-08 | 2021-05-08 | Drawing support for building engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214963875U (en) |
-
2021
- 2021-05-08 CN CN202120970150.0U patent/CN214963875U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116006869A (en) | Mapping instrument positioning device and method for hydrologic water resource mapping | |
| CN214963875U (en) | Drawing support for building engineering | |
| CN215969474U (en) | Portable floor appurtenance that punches | |
| CN216431185U (en) | From rapping bar | |
| CN215107682U (en) | Large-scale flexible sunshade canopy | |
| CN111998824B (en) | Self-suction type positioning measurement auxiliary equipment and use method | |
| CN210363111U (en) | Civil engineering drawing board | |
| CN110231113B (en) | Fiber grating soil body pressure testing device for civil engineering | |
| CN106973873B (en) | Multifunctional fishing rod support | |
| CN219100777U (en) | Auxiliary supporting tool for assembling prefabricated part connecting nodes | |
| CN218585480U (en) | Remove tachymeter convenient to equipment | |
| CN215564909U (en) | Joint structure and tent pole | |
| CN211178343U (en) | Portable three-dimensional scanning equipment for building engineering with from fixed knot structure | |
| CN216896556U (en) | A on-spot mapping device for building engineering cost design | |
| CN209733124U (en) | Convenient portable drawing board support for indoor decoration who adjusts | |
| CN211729093U (en) | A workstation that is used for umbrella face and rib to connect | |
| CN220415236U (en) | Folding herringbone cat ladder | |
| CN212105371U (en) | Portable outdoor tent | |
| CN217807650U (en) | Wall cloth roll supporting device | |
| CN207593731U (en) | Foldable multifunctional Working table | |
| CN213587683U (en) | Quick-dismounting and mounting integrated operation platform for building engineering management | |
| CN212902866U (en) | Rotatable head and folding arm support with telescopic legs | |
| CN215588555U (en) | Adjustable tubular product rotation assisting device | |
| CN213614966U (en) | Welding fixture for metal welding machine | |
| CN218702398U (en) | Auxiliary assembly is used in teaching of mathematics geometry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211203 |