CN114754746B - Support device for laser projection and laser positioning equipment - Google Patents
Support device for laser projection and laser positioning equipment Download PDFInfo
- Publication number
- CN114754746B CN114754746B CN202210089468.7A CN202210089468A CN114754746B CN 114754746 B CN114754746 B CN 114754746B CN 202210089468 A CN202210089468 A CN 202210089468A CN 114754746 B CN114754746 B CN 114754746B
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- laser
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- support device
- substrate surface
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- 239000000758 substrate Substances 0.000 claims abstract description 29
- 230000036316 preload Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 15
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application discloses a support device for laser projection and a laser positioning device. The support device provided above, the support device for laser projection provided above, and the laser positioning apparatus provided above, when the laser instrument is to be erected for implementation, an operator pre-loads the mount and the first fastener on the substrate surface (e.g., the poured concrete surface), places the adjusting foot stand on the substrate surface, and inserts the mount into the first mounting groove and the first fastener into the second mounting groove. Then, the second fastener is simultaneously inserted into the mounting hole of the mounting piece and the third mounting groove of the laser emission base, so that the laser emission base with the laser emitter is assembled on the adjusting foot stool, and the erection is conveniently completed. The support device is fixed with the substrate surface by relying on the mounting piece and the first fastening piece, so that the erection is stable.
Description
Technical Field
The application relates to the technical field of laser equipment, in particular to a supporting device for laser projection and laser positioning equipment.
Background
With the continuous development of buildings, the increase of different buildings becomes a difficult problem for better controlling the shape and the size of the frame, particularly the development of curtain walls, and the requirements for the size and the forming of the frame of the building are higher.
In the related art, a laser projector is used for projection, and a supporting device is required to be erected for supporting the laser projector. The support device has insufficient support stability, is easily touched by external force during laser projection construction, and finally leads to no astigmatism and offset of laser in long-distance transmission.
Disclosure of Invention
In view of this, the present application provides a supporting device for laser projection and a laser positioning apparatus, which can improve the stability of the support.
A support device for laser projection, comprising:
the adjusting foot rest comprises a fixed disc and at least one positioning piece fixedly arranged on the fixed disc, wherein the fixed disc is provided with a first mounting groove, and the positioning piece is provided with a second mounting groove; the first mounting groove is used for inserting a mounting piece preassembled on the substrate surface, the second mounting groove is used for inserting a first fastening piece preassembled on the substrate surface, and the mounting piece is provided with at least one mounting hole;
the at least one laser emission base is provided with a third mounting groove, and the third mounting groove is used for being matched with the mounting hole so that a second fastening piece can be simultaneously inserted into the third mounting groove and the mounting hole, and then the laser emission base is mounted on the adjusting foot stool.
Optionally, the fixing disc comprises an inner disc body and an outer disc body rotatably arranged on the inner disc body, the first mounting groove is formed in the inner disc body, and the positioning piece is arranged on the outer disc body.
Optionally, the fixed disk is provided with a horizontal orientation indicator.
Optionally, the locating piece includes telescopic branch and disposes in the mount pad of branch tip, the second mounting groove is seted up on the mount pad.
Optionally, the positioning element further comprises an adjusting screw arranged on the support rod, wherein the adjusting screw is used for installing at least two sections forming the support rod.
Optionally, the positioning piece is inserted on the fixed disc.
Optionally, the mounting member includes a screw portion for screw-connecting to the substrate surface, and a connecting portion provided with the mounting hole.
Optionally, a roller is disposed in the second mounting groove, and the first fastener includes a threaded portion for being screwed on the substrate surface, and a snap ring fixedly connected to the threaded portion, and the snap ring is used for being clamped into the roller.
Optionally, the first fastener further comprises a protruding part connected with the clamping ring and the screw connection part.
The laser positioning equipment comprises the supporting device and two laser transmitters arranged on the supporting device, wherein the two laser transmitters are respectively arranged on the two laser transmitting bases and are respectively used for generating vertical laser and horizontal laser.
When the laser instrument is to be erected, the operator pre-loads the mounting member and the first fastening member on the surface of the base material (e.g., the poured concrete surface), places the adjusting foot stand on the surface of the base material, and inserts the mounting member into the first mounting groove and the first fastening member into the second mounting groove. Then, the second fastener is simultaneously inserted into the mounting hole of the mounting piece and the third mounting groove of the laser emission base, so that the laser emission base with the laser emitter is assembled on the adjusting foot stool, and the erection is conveniently completed. The support device is fixed with the substrate surface by relying on the mounting piece and the first fastening piece, so that the erection is stable.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of an adjusting stand according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a fixing disc according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a laser emitting base on which a laser emitter is placed according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a mounting member according to an embodiment of the present application.
Fig. 5 is a schematic structural view of a first fastener according to an embodiment of the present application.
FIG. 6 is a schematic structural view of a second fastener according to an embodiment of the present application.
Wherein, the elements in the figure are identified as follows:
120-adjusting a foot rest; 121-a fixed disk; 1211-an inner tray; 1212-an outer tray; 121 a-a first mounting groove; 122-positioning piece; 122 a-a second mounting slot; 1221-struts; 1222-an adjusting screw; 1223-a roller; 123-horizontal orientation indicator; 130-a laser emitting base; 130 a-a third mounting slot; 131-placing the structure; 132-a base body; 200-mounting; 200 a-mounting holes; 210, 310-screw; 220-connecting part; 300-a first fastener; 320-snap ring; 240, 340-projections; 400-a second fastener; 420-an insertion portion; 440—an operation section; 500-laser emitter.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
Before introducing the technical solutions of the present application, it is necessary to set forth the created background of the invention of the present application.
It is already common in the related art to use a laser projector for projection, and the stability of the supporting device for the laser projector mainly depends on the self weight of the supporting device. In order to obtain a high stability, the weight of the support device is usually configured to be heavy. The heavier support means obviously increases the flexibility of movement during the erection operation, i.e. it is determined that the dead weight of the support means is limited by the flexibility of the erection operation and that the stability of the support obtained is very limited. Particularly easily affected by external forces. Here, the external force is derived from the operation touch of a button or a knob of the operation laser projector, or wind force and the like applied to a construction site, or the external force is carelessly collided by a third party, which may bring about slight shaking of the laser projector, and finally, the laser is not prevented from generating astigmatism and offset in long-distance transmission.
In view of the above-described insufficient erection stability due to the influence of external force of the related art, the present inventors have surprisingly proposed a supporting device for laser projection and a laser positioning apparatus. When the laser instrument is to be erected, the operator pre-loads the mount 200 and the first fastener 300 on the substrate surface (e.g., the poured concrete surface), places the adjustment foot stand 120 on the substrate surface, and inserts the mount 200 into the first mounting groove 121a and the first fastener 300 into the second mounting groove 122a. Then, the second fastener 400 is simultaneously inserted into the mounting hole 200a of the mounting member 200 and the third mounting groove 130a of the laser emitting base 130, so that the laser emitting base 130, in which the laser emitter 500 is placed, is assembled to the adjustment stand 120, thereby conveniently completing the erection. Since the fixing of the supporting device to the substrate surface is achieved by the mounting member 200 and the first fastening member 300, the supporting device can be firmly connected to the substrate surface without significant shaking even if being touched by external force, and the stability of the support is provided. Thus, the present invention has been created.
Referring to fig. 1, 2 and 3, a supporting device for laser projection according to an embodiment of the present application includes:
an adjusting stand 120 comprising a fixed disk 121 and at least one positioning member 122 fixedly disposed on the fixed disk 121, wherein the fixed disk 121 is provided with a first mounting groove 121a, and the positioning member 122 is provided with a second mounting groove 122a; the first mounting groove 121a is used for inserting a mounting piece 200 preassembled on the substrate surface, the second mounting groove 122a is used for inserting a first fastening piece 300 preassembled on the substrate surface, and the mounting piece 200 is provided with at least one mounting hole 200a;
at least one laser emitting base 130 has a third mounting groove 130a, and the third mounting groove 130a is configured to cooperate with the mounting hole 200a, so that the second fastener 400 can be inserted into the third mounting groove 130a and the mounting hole 200a at the same time, and the laser emitting base 130 is further mounted on the adjusting stand 120.
It should be stated that although the reference herein to "a support for laser projection" is provided with "laser projection", this limitation is merely an exemplary illustration and does not constitute a limitation on the use of the support of the present application. I.e. any other instrument like a laser projector, i.e. a device that needs to provide a stable support, such as a device with camera functionality (smart terminal, video camera, video recorder, etc.), is suitable for the support means of the present application. "projection with laser light" is understood to mean the expression of the environment of use. For convenience of explanation, the laser projector will be used as an example, and the explanation of other non-earth-polishing operations will be omitted to avoid the lack of brevity.
Please refer to fig. 2 again. As an implementation manner of the fixed disk 121, the fixed disk 121 includes an inner disk body 1211 and an outer disk body 1212 rotatably disposed on the inner disk body 1211, and the first mounting groove 121a is opened on the inner disk body 1211.
Thus, during installation, the positioning member 122 can be rotated relative to the inner disc 1211 through the rotatable arrangement, that is, the first installation groove 121a is driven to rotate relative to the second installation groove 122a, so that the angular posture of the first installation groove 121a relative to the second installation groove 122a is adjusted, finally, the first fastening member 300 is inserted into the second installation groove 122a in a proper posture, and the installation member 200 is inserted into the first installation groove 121a in a proper posture, so that the first fastening member 300 and the installation member 200 cannot be inserted in place (for example, the first fastening member 300 and the installation member 200 are not completely inserted, or the groove walls of the first installation groove 121a and the second installation groove 122a are not fully contacted after the first fastening member 300 and the installation member 200 are inserted, and the like).
It should be noted that, since the first fastening member 300 and the mounting member 200 are mounted on the substrate surface in advance. Although the first fastening member 300 and the mounting member 200 are disposed according to the positions of the first and second mounting grooves 121a and 122a of the adjustment stand 120 in the pre-mounting operation. However, in this preliminary operation, it is generally necessary to open holes (i.e., pre-buried holes) in the surface of the substrate. For some substrate surfaces made of hard materials, such as solid concrete, the hole opening operation usually needs to be performed manually by using heavy electric pick, electric hammer, etc., which results in poor accuracy and reliability of manual hole opening, and a certain error may not be avoided, so that the first fastener 300 and the mounting member 200 may not be completely inserted into the first mounting groove 121a and the second mounting groove 122a after being embedded into the pre-embedded holes of the substrate surfaces.
Here, it is conceivable that the rotatably arranged realization may be a bearing, a bushing or the like. The manner of mounting these rotatable members is common knowledge and will not be described again.
The number of the positioning members 122 may be selected according to practical needs, and based on a better fixing effect on the fixing disc 121, the number of the positioning members 122 may be plural, such as three as shown in fig. 1. The plurality of positioning members 122 may be arranged on the fixed disk 121 at regular angular intervals.
As one implementation of the positioning member 122, the positioning member 122 includes a telescopic strut 1221 and a mounting seat disposed at an end of the strut 1221, and the second mounting groove 122a is opened in the mounting seat.
Here, the arrangement of the telescopic strut 1221 allows the distance between the second mounting groove 122a with respect to the first mounting groove 121a to be adjusted to ensure that the position of the second mounting groove 122a is better aligned with the first fastener 300 pre-loaded on the substrate surface, thereby improving the thoroughness of the insertion of the first fastener 300 into the second mounting groove 122a.
It should be noted that the reason why the incomplete insertion of the first fastener 300 into the second mounting groove 122a occurs has been previously discussed.
For the telescopic implementation of the pole 1221, any form known in the art may be used, such as a telescopic pole of an umbrella or a telescopic pole of a self-timer stick, etc.
As a convenient implementation, the telescoping implementation is an adjustment screw 1222. Specifically, the positioning member 122 further includes an adjustment screw 1222 disposed on the rod 1221, wherein the adjustment screw 1222 is configured for mounting at least two segments of the rod 1221.
Here, the term "at least two segments constituting the strut 1221" may be two segments as shown in fig. 1, or a plurality of segments, or the like.
The adjusting screw 1222 is a pipe having two screw portions, wherein the two screw portions 210 and 310 are respectively screwed to the end portions of two sections of the rod 1221. Thus, when the telescopic adjustment is performed, one of the two sections of the adjustment rod 1221 is screwed, the length of the section of the rod 1221 extending into the threaded portion is adjusted to achieve the adjustment of the length.
As for the connection mode of the positioning element 122 and the fixing disc 121, the positioning element 122 may be inserted and connected to facilitate the disassembly and assembly of the positioning element 122 from the fixing disc 121, where the convenience of disassembly and assembly of the positioning element 122 and the fixing disc 121 can greatly improve the convenience of the insertion and assembly of the second mounting groove 122a and the first fastening member 300, so as to prevent the fixing of the fixing disc 121 from generating a catch on the positioning rod and obstructing the alignment of the second mounting groove 122a on the first fastening member 300 after the fixing disc 121 has been fixed on the substrate surface by the mounting element 200. In this way, in the implementation manner of plugging the positioning element 122 and the fixing disc 121, after the second mounting groove 122a is aligned with the first fastener 300 and the mounting element 200 is aligned with the first mounting groove 121a, the fixing disc 121 and the positioning element 122 are plugged together, so that the smoothness of the whole operation process is improved.
In an exemplary embodiment, the fixing plate 121 is provided with a horizontal direction indicator 123 to indicate the levelness or verticality of the fixing plate 121 with respect to the surface of the substrate, thereby ensuring the levelness or verticality of the laser emitting base 130 after being mounted on the adjusting stand 120.
The horizontal orientation indicator 123 may be in the form of a bubble level, or a level, or the like.
Please refer to fig. 3. As for the implementation of the laser emitting base 130, a base body 132 may be included, and the base body 132 is provided with the third mounting groove 130a. The number of the third mounting grooves 130a and the positional relationship between the upper and lower positions may be two as in fig. 3, i.e., one at the middle and one at the lower.
The base body 132 may also be provided with a placement structure 131 for placement of the laser transmitter 500.
Please refer to fig. 4. As one implementation of the mounting member 200, the mounting member 200 includes screw portions 210,310 for screw-coupling to the substrate surface, and a connection portion 220 provided with the mounting hole 200 a.
In this way, the arrangement of the threaded portions 210,310 of the mounting member 200 facilitates the mounting of the mounting member 200 to the pre-buried hole on the substrate surface with reduced risk of hole removal.
Of course, the mounting member 200 may be other common bolts or expansion bolts, etc.
In order to reduce the interference of the insertion of the second fastener 400 caused by the insertion of the connection portion 220 of the mounting member 200 into the pre-buried hole, the mounting member 200 may further include a protrusion 240,340 for connecting the connection portion 220 and the screw portion 210, 310.
The protruding parts 240 and 340 can prevent the connection part 220 from being inserted into the pre-buried hole by using the protruding positions thereof, ensure that the connection part 220 is exposed on the surface of the base material, and avoid the connection part 220 from being hidden by the pre-buried hole.
Please refer to fig. 5. As one implementation of the first fastener 300, a roller 1223 is disposed in the second mounting groove 122a, and the first fastener 300 includes screw portions 210,310 for screwing on the substrate surface, and a clip 320 for fixing the screw portions 210,310, and the clip 320 is for engaging the roller 1223.
In this implementation of the first fastener 300, the snap ring 320 only needs to be hooked on the outer surface of the roller 1223 during the insertion operation of the second mounting groove 122a and the first fastener 300. The screw thread portion of the first fastener 300 facilitates the installation firmness of the pre-embedded hole of the first fastener 300 on the substrate surface, and reduces the risk of hole disengagement.
In order to reduce the blocking ring 320 of the first fastener 300 from entering the pre-buried hole to block the insertion with the second installation groove 122a, the first fastener 300 may further include a protrusion 240,340 for connecting the blocking ring 320 and the screw portion 210, 310.
The protruding parts 240 and 340 can prevent the snap ring 320 from being inserted into the pre-buried hole by using the protruding positions of the protruding parts, ensure that the snap ring 320 of the first fastener 300 is exposed on the surface of the base material, and avoid the snap ring 320 from being hidden by the pre-buried hole.
Please refer to fig. 6. The second fastener 400 may be implemented as a connector such as a pin or a pin shaft. As an implementation manner, please refer to fig. 6, which includes an insertion portion 420 and an operation portion 440, wherein the operation portion 440 is used for holding by a hand or by a tool for insertion operation, and the insertion portion 420 is used for simultaneously inserting into the third mounting groove and the mounting hole 200 a.
The insertion portion 420 may be rounded to reduce insertion resistance and facilitate insertion. The operating portion 440 may be square to facilitate hand-holding or tool gripping.
The present embodiment also provides a laser positioning device, which includes the supporting device and two laser transmitters 500 disposed on the supporting device, where the two laser transmitters 500 are respectively disposed on two laser transmitters bases and are respectively used to generate laser in a vertical direction and laser in a horizontal direction.
Thus, the laser emission of the horizontal plane and the vertical plane is realized through the two laser emitters 500 of the vertical laser and the horizontal laser, and the comprehensiveness and the rapidness of laser measurement are improved.
Here, the specific structure of the placement of the laser transmitter 500 on the supporting device may be a manner of a holder such as a selfie stick or other holder of a holder fixture.
It is particularly noted that the laser transmitter 500 may be of a form commonly used in the art, and its specific structure does not affect its applicability to the support device described herein. In view of this, the specific structure of the laser transmitter 500 will not be described again.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A support device for laser projection, comprising:
the adjusting foot rest comprises a fixed disc and at least one positioning piece fixedly arranged on the fixed disc, wherein the fixed disc is provided with a first mounting groove, and the positioning piece is provided with a second mounting groove; the first mounting groove is used for inserting a mounting piece preassembled on the substrate surface, the second mounting groove is used for inserting a first fastening piece preassembled on the substrate surface, and the mounting piece is provided with at least one mounting hole; the fixed disc comprises an inner disc body and an outer disc body which is rotatably arranged on the inner disc body, the first mounting groove is formed in the inner disc body, and the positioning piece is arranged on the outer disc body;
the at least one laser emission base is provided with a third mounting groove, and the third mounting groove is used for being matched with the mounting hole so that a second fastening piece can be simultaneously inserted into the third mounting groove and the mounting hole, and then the laser emission base is mounted on the adjusting foot stool.
2. The support device of claim 1, wherein the fixed disk is provided with a horizontal orientation indicator.
3. The support device of claim 1, wherein the positioning member comprises a telescopic strut and a mounting seat disposed at an end of the strut, and the second mounting groove is formed in the mounting seat.
4. A support device according to claim 3, wherein the positioning member further comprises an adjustment screw disposed on the strut, the adjustment screw being configured for mounting of at least two segments comprising the strut.
5. The support device of claim 1, wherein the positioning member is inserted on the fixed disk.
6. The support device of claim 1, wherein the mounting member includes a threaded portion for threaded engagement with the substrate surface, and a connecting portion defining the mounting hole.
7. The support device of claim 1, wherein a roller is disposed in the second mounting groove, and the first fastener includes a threaded portion for being screwed onto the substrate surface, and a snap ring fixedly connected to the threaded portion, the snap ring being configured to be snapped into the roller.
8. The support device of claim 7, wherein the first fastener further comprises a protrusion connecting the snap ring, threaded connection.
9. A laser positioning device, comprising a supporting device according to any one of claims 1 to 8, and two laser transmitters arranged on the supporting device, wherein the two laser transmitters are respectively arranged on two laser transmitting bases and are respectively used for generating vertical direction laser light and horizontal direction laser light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089468.7A CN114754746B (en) | 2022-01-25 | 2022-01-25 | Support device for laser projection and laser positioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089468.7A CN114754746B (en) | 2022-01-25 | 2022-01-25 | Support device for laser projection and laser positioning equipment |
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| Publication Number | Publication Date |
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| CN114754746A CN114754746A (en) | 2022-07-15 |
| CN114754746B true CN114754746B (en) | 2024-03-29 |
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| CN202210089468.7A Active CN114754746B (en) | 2022-01-25 | 2022-01-25 | Support device for laser projection and laser positioning equipment |
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| CN213479732U (en) * | 2020-11-10 | 2021-06-18 | 中土(苏州)工程建设有限公司 | Laser emitter support for laser leveling |
| CN113203066A (en) * | 2021-04-15 | 2021-08-03 | 山西路泽交通科技有限公司 | Road traffic and street lamp view brightening system |
| CN215060947U (en) * | 2021-05-28 | 2021-12-07 | 吕国锋 | A triangular support for petroleum geology exploration |
| CN215173825U (en) * | 2021-06-21 | 2021-12-14 | 常州维尔曼光电仪器有限公司 | Scene multi-adaptive laser striping machine |
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| CN114754746A (en) | 2022-07-15 |
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