CN213067586U - High-precision portable type ground corner positioning device - Google Patents
High-precision portable type ground corner positioning device Download PDFInfo
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- CN213067586U CN213067586U CN202022229067.6U CN202022229067U CN213067586U CN 213067586 U CN213067586 U CN 213067586U CN 202022229067 U CN202022229067 U CN 202022229067U CN 213067586 U CN213067586 U CN 213067586U
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- 239000003550 marker Substances 0.000 claims abstract description 23
- 230000005693 optoelectronics Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a high-precision portable type ground corner point positioning device, which comprises a plurality of marker post connecting pieces, a plurality of laser reflecting devices which are detachably arranged on the marker post connecting pieces and a laser transmitting and receiving device which is detachably arranged on the marker post connecting pieces; the laser emitting and receiving device comprises a laser diode for emitting laser beams, a photosensitive diode for receiving the laser beams and a light emitting diode associated with the photosensitive diode. The utility model has simple and clear structure principle, easy manufacture and mature required component technology, and particularly utilizes the optical principle of the pentagonal prism to ensure that the included angle between the incident light and the reflected light is 90 degrees, thereby positioning; for the production of products, the production is convenient and the cost is low; the utility model has simple equipment and easy operation, and can be placed on the light of the laser beam only by turning on the power supply; and then, the corner point can be determined only by finely adjusting the position, which is very convenient.
Description
Technical Field
The utility model relates to a forestry investigation field, a portable style position fixing device of high accuracy specifically says so.
Background
The same-field survey is an important method for forestry survey. In selecting a sample plot, the determination of the position of the sample plot corner points is the first step of the sample plot survey. Traditionally, a forest compass is erected, the angle of the compass is recorded, and the position of a sample plot corner point is determined in a three-time station transfer mode; but the erection and the transfer speed of the forest compass are slow, and the forest compass has influence on the closing precision of the sample plot perimeter (for example, the continuous clearing of national forest resources requires that the difference of the sample plot perimeter is less than 0.5 percent) due to different proficiency degrees of operators; simultaneously, the forest compass appearance is heavier, and the required wooden tripod of compass appearance is erect in addition, very big increase field operation personnel's burden. Therefore, the searching for a small and portable sample plot corner positioning device with simple operation and high precision has important significance for forestry investigation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-precision portable style ground corner positioning device aiming at the defects of the prior art; the technical scheme is as follows:
a high-precision portable type ground corner point positioning device comprises a plurality of marker post connecting pieces, a plurality of laser reflecting devices which are detachably arranged on the marker post connecting pieces and a laser emitting and receiving device which is detachably arranged on the marker post connecting pieces; the laser transmitting and receiving device comprises a laser diode for transmitting laser beams, a photosensitive diode for receiving the laser beams and a light emitting diode associated with the photosensitive diode; correspondingly setting the angle between the laser diode and the photosensitive diode to be 90 degrees; the laser reflection device comprises a pentagonal prism with an adjustable angle, wherein two surfaces of the pentagonal prism are set as reflecting surfaces, two surfaces connected with the two reflecting surfaces are correspondingly set as incidence surfaces, the pentagonal prism receives a laser beam from one incidence surface and emits the laser beam from the other incidence surface, and the angle between the incident laser beam and the reflected laser beam is always 90 degrees; laser beams emitted by laser diodes in the laser emitting and receiving devices are reflected by pentagonal prisms in the laser reflecting devices and then are received by photosensitive diodes in the laser emitting and receiving devices, and therefore the angular point of a sample plot is determined.
Preferably, the marker post connecting piece comprises a pointed body and a threaded fixture block arranged at the upper end part of the pointed body; the pointed body is also provided with a lug, and the lower end of the pointed body is in a pointed shape; and three laser reflection devices are correspondingly arranged.
Preferably, the laser reflection device comprises an external shell, the lower end of the external shell is provided with a threaded bayonet matched with the threaded fixture block, an arc-shaped clamping groove is formed in the external shell, and an opening is formed in one side surface of the external shell; the upper end and the lower end of the pentagonal prism are correspondingly provided with arc-shaped clamping blocks, the pentagonal prism is arranged in the arc-shaped clamping groove in the outer shell through the arc-shaped clamping blocks, and the angle can be adjusted up and down; two incidence surfaces of the pentagonal prism are exposed out of the opening of the outer shell.
Preferably, a circular leveling bubble is further installed at the middle position of the upper end of the outer shell; in the five angles of the pentagonal prism, the angle between two incidence surfaces is set to be 90 degrees; the other four corners are all set to be 112.5 degrees; and the angle of the pentagonal prism 6 adjusted up and down is 0-60 degrees.
Preferably, the laser transmitting and receiving device comprises a cylindrical shell, the cylindrical shell is internally divided into three parts by two clapboards, and a pointer cabin at the upper end, a photoelectric equipment cabin in the middle and a bottom empty cabin at the lower end; the laser diode and the photosensitive diode are both arranged in the optoelectronic device cabin; and a light inlet hole corresponding to the position of the photosensitive diode is arranged in the photoelectric equipment cabin; the photosensitive diode is arranged inside the light inlet hole; the light emitting diodes are correspondingly arranged in the pointer cabin; the photoelectric equipment cabin is also internally provided with a battery, and the outside of the photoelectric equipment cabin is also provided with a switch. The light-emitting diode is arranged in the pointer cabin, so that an operator can conveniently observe whether the light is emitted, the photosensitive diode is arranged in the light inlet hole and is not arranged on the mouth, and the problem that the operator mistakenly thinks that the laser is received due to the fact that the circuit is connected and the light-emitting diode is lightened because ambient light (such as sunlight or scattering) directly irradiates on the photosensitive diode is avoided.
Preferably, the upper end of the pointer cabin is provided with a glass cover plate, the edge in the pointer cabin is provided with a dial, the middle position of the pointer cabin is provided with a north pointer through a thimble, and the pointer cabin is also internally provided with a circular leveling bubble.
Preferably, the optoelectronic device cabin is also provided with a pointer stop knob, the pointer stop knob is connected with an L-shaped pointer stop elastic sheet, one end of the pointer stop elastic sheet is connected with the pointer stop knob, and the other end of the pointer stop elastic sheet extends out of the pointer cabin from the partition plate and extends into the position below the middle of the north arrow; a lever fulcrum is also arranged in the pointer cabin, and the bending part of the pointer stopping elastic sheet is arranged on the lever fulcrum; and the bottom of the bottom empty chamber is correspondingly provided with a thread bayonet matched with the thread clamping block.
Has the advantages that: the utility model discloses following beneficial effect has:
(1) the utility model has simple and clear structure principle, easy manufacture and mature required component technology, and particularly utilizes the optical principle of the pentagonal prism to ensure that the included angle between the incident light and the reflected light is 90 degrees, thereby positioning, and having convenient production and low cost for the production of products;
(2) the utility model has simple equipment and easy operation, and can be placed on the light of the laser beam only by turning on the power supply; then, the angular point can be determined only by finely adjusting the position, which is very convenient;
(3) the upper end and the lower end of the pentagonal prism in the laser reflection device are both installed through the arc-shaped fixture block, so that the angle can be adjusted through the up-and-down turning movement of the arc-shaped fixture block, and the rotation can be adjusted by 60 degrees to the maximum extent, so that the pentagonal prism is suitable for sample plots with uneven terrains;
(4) each part in the utility model can be detachably mounted with the marker post connecting piece, and the designed equipment has smaller diameter, small overall volume and light weight, and is very convenient to carry after being detached; in addition, the installation is more convenient and rapid, and the device is convenient to use in the field;
(5) the utility model determines the position of the angle point by turning the laser beam right angle through the pentagonal prism, and has the advantages of ingenious structural design, small deviation of the laser beam and high precision; the direction can be accurately determined by matching with a north arrow arranged on the integral device, the horizontal plane can be correspondingly determined by utilizing the circular leveling bubble, and the measurement precision is improved;
(6) the device arranges the light-emitting diode in the pointer cabin, so that an operator can conveniently observe whether the light-emitting diode emits light, and the photosensitive diode is arranged in the light inlet hole and is not arranged on the mouth, so that the problem that the operator mistakenly thinks that the laser is received due to the fact that the circuit is connected and the light-emitting diode is lightened because ambient light (such as sunlight or scattering) directly irradiates on the photosensitive diode is avoided;
(7) the device is provided with a stop mechanism of the north pointer, and when the device is not used, the north pointer is separated from the thimble, so that the service life of the pointer is prolonged; the pointer locking elastic sheet is placed on a lever fulcrum by utilizing a lever principle, and when a pointer locking knob is screwed inwards, the other end of the pointer locking elastic sheet is correspondingly pushed to tilt, so that a north pointer is jacked; when the knob is loosened, the spring plate falls back due to the gravity of the spring plate, so that the pointer falls on the thimble and is normally used.
Drawings
FIG. 1 is a diagram illustrating the overall use of the present invention;
FIG. 2 is a structural diagram of the middle post connecting piece of the present invention;
FIG. 3 is a structural diagram of the middle laser reflection device of the present invention;
FIG. 4 is a cross-sectional view E-E of FIG. 3;
FIG. 5 is a cross-sectional view F-F of FIG. 3;
FIG. 6 is a sectional view taken along line G-G of FIG. 3;
FIG. 7 is a structural diagram of the laser transmitter/receiver of the present invention;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;
FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;
FIG. 10 is a cross-sectional view taken at C-C of FIG. 7;
FIG. 11 is a cross-sectional view taken along line D-D of FIG. 7;
fig. 12 is a circuit diagram of the optoelectronic device chamber of the middle laser transmitter-receiver of the present invention.
Detailed Description
The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
As shown in fig. 1 to 12, a high-precision portable style ground corner point positioning device comprises a plurality of marker post connecting pieces, a plurality of laser reflection devices 1 detachably mounted on the marker post connecting pieces, and a laser emitting and receiving device 2 detachably mounted on the marker post connecting pieces; the laser emitting and receiving device 2 comprises a laser diode 3 for emitting a laser beam, a photosensitive diode 4 for receiving the laser beam and a light emitting diode 5 associated with the photosensitive diode 4; correspondingly setting the angle between the laser diode 3 and the photosensitive diode 4 to be 90 degrees; the laser reflection device 1 comprises a pentagonal prism 6 with an adjustable angle, wherein two surfaces of the pentagonal prism 6 are set as reflecting surfaces 61, two surfaces connected with the two reflecting surfaces 61 are correspondingly set as incidence surfaces 62, the pentagonal prism 6 receives a laser beam from one incidence surface 62 and emits the laser beam from the other incidence surface 62, and the angle between the incident laser beam and the reflected laser beam is always 90 degrees; laser beams emitted by the laser diodes 3 in the laser emitting and receiving device 2 are reflected by the pentagonal prisms 6 in the laser reflecting devices 1 and then received by the photosensitive diodes 4 in the laser emitting and receiving device 2, so that the angular sampling points are determined.
The marker post connecting piece comprises a pointed body 7 and a threaded fixture block 8 arranged at the upper end part of the pointed body 7; the pointed body 7 is also provided with a lug 9, and the lower end of the pointed body 7 is in a pointed shape; three laser reflection devices 1 are correspondingly arranged; the marker post connecting piece in the device can adopt a marker post structure with the application number of 202020412120.3, and is integrally matched for use; in addition, the outer diameters of the laser transmitting and receiving device and the laser reflecting device in the device are matched with the outer diameter of the marker post for the purposes of being small and portable; when the sighting rod connecting piece is used, the sighting rod connecting piece is firstly connected with the threaded bayonets 11 on the laser transmitting and receiving device and the laser reflecting device through the threaded fixture block 8, then the pointed body 7 is inserted into the containing cavity at the top of the sighting rod, and the sighting rod connecting piece is fixed by rotating 90 degrees.
The laser reflection device 1 comprises an outer shell 10, wherein a thread bayonet 11 matched with the thread clamping block 8 is arranged at the lower end of the outer shell 10, an arc-shaped clamping groove 12 is arranged inside the outer shell 10, and an opening is formed in one side surface of the outer shell; the upper end and the lower end of the pentagonal prism 6 are correspondingly provided with arc-shaped fixture blocks 13, and the pentagonal prism 6 is arranged in the arc-shaped fixture grooves 12 in the outer shell 10 through the arc-shaped fixture blocks 13 and can be adjusted in angle up and down; both incident surfaces of the pentagonal prism 6 are exposed from an opening of the outer case 10.
A circular leveling bubble 14 is also arranged at the middle position of the upper end of the outer shell 10; of the five angles of the pentagonal prism 6, the angle between two incident surfaces is set to 90 °; the other four corners are all set to be 112.5 degrees; and the angle of the pentagonal prism 6 adjusted up and down is 0-60 degrees.
The laser transmitting and receiving device comprises a cylindrical shell 15, the interior of the cylindrical shell 15 is divided into three parts by two clapboards 16, a pointer cabin 17 at the upper end, a photoelectric equipment cabin 18 in the middle and a bottom empty cabin 19 at the lower end; the laser diode 3 and the photosensitive diode 4 are both arranged in the optoelectronic device cabin 18; and the optoelectronic device cabin 18 is provided with a light inlet hole 20 corresponding to the position of the photosensitive diode 4; the light-emitting diode 5 is correspondingly arranged in the pointer cabin 17; the optoelectronic device compartment 18 also has a battery 21 mounted therein and a switch 22 disposed externally thereof.
The upper end of the pointer cabin 17 is provided with a glass cover plate 23, the inner edge of the pointer cabin 17 is provided with a dial, a north pointer 26 is arranged at the middle position of the pointer cabin 17 through a thimble 25, and the pointer cabin 17 is also internally provided with a circular leveling bubble 14.
The optoelectronic device cabin 18 is also provided with a pointer stop knob 27, the pointer stop knob 27 is connected with an L-shaped pointer stop elastic sheet 28, one end of the pointer stop elastic sheet 28 is connected with the pointer stop knob 27, and the other end extends out of the partition board 16 into the pointer cabin 17 and extends into the position below the middle of the north arrow 26; a lever fulcrum 29 is also arranged in the pointer cabin 17, and the bending part of the pointer stopping elastic sheet 28 is arranged on the lever fulcrum 29; and the bottom of the bottom layer empty chamber 19 is correspondingly provided with a threaded bayonet 11 matched with the threaded fixture block 8.
The utility model discloses in the most important part be pentagon prism, pentagon prism is the fixed angle steering gear of light beam, and one of them important usage is "no matter what the incident angle on the first face is, emergent light turns to certain angle (90 °) to the incident light. The utility model utilizes a laser transmitting and receiving device and three laser reflecting devices to carry out three-time right-angle steering on laser beams transmitted by the laser diode and then return the laser beams to a light inlet hole vertical to the laser diode; if the photosensitive diode in the light inlet hole senses the laser beam, the circuit is connected, the light emitting diode is lightened, and the corner point position is correct; if no laser beam enters the light inlet, the light emitting diode is not bright, and the position of the corner point is wrong.
The utility model discloses specific use as follows:
(1) firstly, inserting a mark post at one angular point (usually, a southwest corner) of the sample plot, and turning on a power switch of the laser transmitting and receiving device; the laser emission direction is determined by rotating the marker post through a compass dial;
(2) inserting a laser reflection device at a certain distance (measured by a tape measure according to the size requirement of the sample plot) along the laser beam, vertically centering through a circular level bubble at the top of the device, and adjusting a marker post to ensure that the laser beam is emitted into a prism;
(3) sequentially, inserting other laser reflection devices in the laser beam at a certain distance; the angular points with uneven terrain can be adjusted by matching the arc-shaped fixture blocks with the upper and lower angles of the pentagonal prism in the laser reflection device to ensure that the four devices are connected by laser beams or can be adjusted by rotating the marker post;
(4) finally, the light emitting diodes on the laser emitting and receiving device are lighted up, and the corner points are determined.
The utility model has simple and clear structure principle, easy manufacture and mature required component technology, and particularly utilizes the optical principle of the pentagonal prism to ensure that the included angle between the incident light and the reflected light is 90 degrees, thereby positioning; for the production of products, the production is convenient and the cost is low; the utility model has simple equipment and easy operation, and can be placed on the light of the laser beam only by turning on the power supply; then, the angular point can be determined only by finely adjusting the position, which is very convenient; the upper end and the lower end of the pentagonal prism in the laser reflection device are both installed through the arc-shaped fixture block, so that the angle can be adjusted through the up-and-down turning movement of the arc-shaped fixture block, and the rotation can be adjusted by 60 degrees to the maximum extent, so that the pentagonal prism is suitable for sample plots with uneven terrains; each part in the utility model can be detachably mounted with the marker post connecting piece, and the designed equipment has smaller diameter, small overall volume and light weight, and is very convenient to carry after being detached; in addition, the installation is more convenient and rapid, and the device is convenient to use in the field; the utility model determines the position of the angle point by turning the laser beam right angle through the pentagonal prism, and has the advantages of ingenious structural design, small deviation of the laser beam and high precision; the compass that the cooperation whole device set up, definite direction that can be accurate utilizes circular level bubble can confirm the horizontal plane correspondingly, improves measurement accuracy.
The light-emitting diode is arranged in the pointer cabin, so that an operator can conveniently observe whether the light is emitted, the photosensitive diode is arranged in the light inlet hole and is not arranged on the mouth, and the problem that the operator mistakenly thinks that the laser is received due to the fact that the circuit is connected and the light-emitting diode is lightened because ambient light (such as sunlight or scattering) directly irradiates on the photosensitive diode is avoided.
The device is provided with a stop mechanism of the north pointer, and when the device is not used, the north pointer is separated from the thimble, so that the service life of the pointer is prolonged; the pointer locking elastic sheet is placed on a lever fulcrum by utilizing a lever principle, and when a pointer locking knob is screwed inwards, the other end of the pointer locking elastic sheet is correspondingly pushed to tilt, so that a north pointer is jacked; when the knob is loosened, the spring plate falls back due to the gravity of the spring plate, so that the pointer falls on the thimble and is normally used.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the invention and the appended claims, and all equivalent changes and modifications made according to the claims should be included in the scope of the present invention.
Claims (7)
1. A high-precision portable style ground corner positioning device is characterized in that: comprises a plurality of marker post connecting pieces, a plurality of laser reflecting devices (1) which are detachably arranged on the marker post connecting pieces and a laser emitting and receiving device (2) which is detachably arranged on the marker post connecting pieces; the laser transmitting and receiving device (2) comprises a laser diode (3) for transmitting laser beams, a photosensitive diode (4) for receiving the laser beams and a light emitting diode (5) associated with the photosensitive diode (4); the laser reflection device (1) comprises a pentagonal prism (6) with an adjustable angle, wherein two surfaces of the pentagonal prism (6) are set as reflecting surfaces (61), two surfaces connected with the two reflecting surfaces (61) are correspondingly set as incidence surfaces (62), the pentagonal prism (6) receives a laser beam from one incidence surface (62) and emits the laser beam from the other incidence surface (62), and the angle between the incident laser beam and the reflected laser beam is always 90 degrees; laser beams emitted by laser diodes (3) in the laser emitting and receiving device (2) are reflected by pentagonal prisms (6) in a plurality of laser reflecting devices (1) and then are received by photosensitive diodes (4) in the laser emitting and receiving device (2), so that a sample-making angular point is determined.
2. A high precision portable style ground point positioning device as claimed in claim 1, wherein: the marker post connecting piece comprises a pointed body (7) and a threaded fixture block (8) arranged at the upper end part of the pointed body (7); the pointed body (7) is also provided with a lug (9), and the lower end of the pointed body (7) is in a pointed shape; three laser reflection devices (1) are correspondingly arranged.
3. A high precision portable style ground point positioning device as claimed in claim 2, wherein: the laser reflection device (1) comprises an outer shell (10), a thread bayonet (11) matched with the thread clamping block (8) for use is arranged at the lower end of the outer shell (10), an arc-shaped clamping groove (12) is arranged inside the outer shell (10), and an opening is formed in one side surface of the outer shell; the upper end and the lower end of the pentagonal prism (6) are correspondingly provided with arc-shaped clamping blocks (13), and the pentagonal prism (6) is arranged in an arc-shaped clamping groove (12) in the outer shell (10) through the arc-shaped clamping blocks (13) and can be adjusted in angle up and down; two incident surfaces of the pentagonal prism (6) are exposed from an opening of the outer case (10).
4. A high precision portable style ground point positioning device as claimed in claim 3, wherein: a round leveling bubble (14) is also arranged at the middle position of the upper end of the outer shell (10); in the five angles of the pentagonal prism (6), the angle between two incidence surfaces is set to be 90 degrees; the other four corners are all set to be 112.5 degrees; and the angle of the pentagonal prism (6) adjusted up and down is 0-60 degrees.
5. A high precision portable style ground point positioning device as claimed in claim 2, wherein: the laser transmitting and receiving device comprises a cylindrical shell (15), wherein the interior of the cylindrical shell (15) is divided into three parts by two clapboards (16), a pointer cabin (17) at the upper end, a photoelectric equipment cabin (18) in the middle and a bottom empty cabin (19) at the lower end; the laser diode (3) and the photosensitive diode (4) are both arranged in the optoelectronic device cabin (18); a light inlet hole (20) corresponding to the position of the photosensitive diode (4) is formed in the photoelectric equipment cabin (18), and the photosensitive diode (4) is arranged in the light inlet hole (20); the light-emitting diodes (5) are correspondingly arranged in the pointer cabin (17); the photoelectric equipment cabin (18) is also internally provided with a battery (21), and the outside of the photoelectric equipment cabin is also provided with a switch (22).
6. A high precision portable style ground point positioning device as claimed in claim 5, wherein: the upper end of pointer cabin (17) is provided with glass cover plate (23), and edge department is provided with the calibrated scale in pointer cabin (17), and north-seeking pointer (26) are installed through thimble (25) in the intermediate position department of pointer cabin (17) to still install circular level bubble (14) in pointer cabin (17).
7. A high precision portable style ground point positioning device as claimed in claim 6, wherein: a pointer stop knob (27) is further arranged in the optoelectronic device cabin (18), an L-shaped pointer stop elastic sheet (28) is connected to the pointer stop knob (27), one end of the pointer stop elastic sheet (28) is connected with the pointer stop knob (27), and the other end of the pointer stop elastic sheet extends out of the partition plate (16) to the pointer cabin (17) and extends into the position below the middle of the north arrow (26); a lever fulcrum (29) is also arranged in the pointer cabin (17), and the bent part of the pointer stopping elastic sheet (28) is arranged on the lever fulcrum (29); and the bottom of the bottom layer empty chamber (19) is correspondingly provided with a threaded bayonet (11) matched with the threaded fixture block (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022229067.6U CN213067586U (en) | 2020-10-09 | 2020-10-09 | High-precision portable type ground corner positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022229067.6U CN213067586U (en) | 2020-10-09 | 2020-10-09 | High-precision portable type ground corner positioning device |
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| Publication Number | Publication Date |
|---|---|
| CN213067586U true CN213067586U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022229067.6U Expired - Fee Related CN213067586U (en) | 2020-10-09 | 2020-10-09 | High-precision portable type ground corner positioning device |
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| CN (1) | CN213067586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506298A (en) * | 2022-10-24 | 2022-12-23 | 中建八局发展建设有限公司 | Deep-water large-span pressure pipe gallery formwork and construction method thereof |
-
2020
- 2020-10-09 CN CN202022229067.6U patent/CN213067586U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506298A (en) * | 2022-10-24 | 2022-12-23 | 中建八局发展建设有限公司 | Deep-water large-span pressure pipe gallery formwork and construction method thereof |
| CN115506298B (en) * | 2022-10-24 | 2024-01-09 | 中建八局发展建设有限公司 | Construction method of deep water large-span pressurized pipe gallery die carrier |
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Granted publication date: 20210427 |