CN113781748A - Movable landslide collapse disaster monitoring device - Google Patents
Movable landslide collapse disaster monitoring device Download PDFInfo
- Publication number
- CN113781748A CN113781748A CN202111126118.5A CN202111126118A CN113781748A CN 113781748 A CN113781748 A CN 113781748A CN 202111126118 A CN202111126118 A CN 202111126118A CN 113781748 A CN113781748 A CN 113781748A
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- outer frame
- movable
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
Abstract
The invention discloses a movable landslide collapse disaster monitoring device which structurally comprises a monitoring head, a supporting upright post and a movable bottom plate, wherein the lower end of the monitoring head is fixedly arranged at the top of the supporting upright post, the lower end of the supporting upright post is welded with the movable bottom plate, the ejecting block is used for telescopic extrusion in a spring pipe sleeve to improve the firmness of magnetic adsorption between the ejecting block and a magnetic block, a distance measuring mechanism is driven to rotate after a rotating shaft rotates to avoid the angular deviation of the distance measuring mechanism, an abutting piece is elastically supported up and down through four extruding rods on the outer side, vibration damping and buffering are carried out between the distance measuring head and a protective shell, the top of a telescopic supporting rod is extruded at the bottom of an outer frame, the outer side of a linkage plate rotates on a hinging shaft, the hinging shaft is guided to move up and down on a guide rod while rotating, and slight up and down movement and buffering are carried out between a supporting rod and the outer frame, the distance measuring mechanism on the inner side of the outer frame is prevented from shaking greatly, so that the distance measuring mechanism improves the data accuracy of real-time monitoring.
Description
Technical Field
The invention relates to the field of disaster monitoring, in particular to a movable landslide and collapse disaster monitoring device.
Background
In the process of monitoring landslide collapse disasters, a laser range finder is adopted and is placed in an open position beside a mountain, the distance between the mountain and the range finder is monitored in real time, the possibility of landslide and collapse caused by vibration of the mountain can be obtained through real-time distance change data, but because the angle of the monitoring head on the laser range finder can be adjusted in a rotating way, the monitoring head on the laser range finder can be easily influenced by strong wind in an open position, and the monitoring head on the laser range finder can be vibrated, so that the angle of the monitoring head which is adjusted and fixed can be changed, and the laser range finder generates larger shaking after receiving the vibration integrally, the laser range finder has poorer buffering effect on the monitoring head of the laser range finder, the distance monitored by the monitoring head to the mountain is enabled to have larger error, and the accuracy of data monitored in real time is reduced.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: this movable landslide disaster monitoring device that collapses, its structure includes monitoring head, support post, removal bottom plate, monitoring head lower extreme fixed mounting is at the support post top to the welding of support post lower extreme has the removal bottom plate, monitoring head includes adjustment mechanism, turn button, block mechanism, buffer gear, adjustment mechanism medial extremity with be equipped with block mechanism to the turn button adopts clearance fit to run through inside adjustment mechanism, the turn button is fixed mutually with block mechanism outside end, the adjustment mechanism bottom is fixed mutually with the buffer gear top.
As a further improvement of the invention, the adjusting mechanism comprises an outer frame, a rotating shaft, magnetic blocks, spring pipe sleeves and ejector blocks, wherein the inner side end of the outer frame is provided with a clamping mechanism, the rotating shaft is fixed with the outer side end of the clamping mechanism, the rotating shaft penetrates through the outer frame, the magnetic blocks are welded on the inner wall of the outer frame, the lower ends of the ejector blocks are arranged in the spring pipe sleeves in a clearance fit mode, the spring pipe sleeves are welded on the outer side of the rotating shaft and abut against the magnetic blocks, the bottom of the outer frame is fixed with the top of the buffering mechanism, the three spring pipe sleeves and the three ejector blocks are distributed on the upper end of the rotating shaft in an arc shape at equal intervals, and the ejector blocks are made of iron and can perform magnetic adsorption with the magnetic blocks.
As a further improvement of the invention, the clamping mechanism comprises a distance measuring mechanism, a sliding shaft, a sliding rail and four clamping blocks, the distance measuring mechanism is arranged inside the outer frame, the middle end of the outer side of the distance measuring mechanism is fixed with the rotating shaft, the middle end of the bottom of the distance measuring mechanism is provided with the sliding shaft, the sliding shaft is slidably mounted inside the sliding rail, the sliding rail is arranged at the lower end of the inner side of the outer frame, the clamping blocks are welded on the inner side of the sliding rail, the clamping blocks are connected with the outer side of the sliding shaft in a clamping manner, the clamping blocks are made of hard rubber materials and are provided with seven groups, and four clamping blocks are arranged at four ends of the outer side of the sliding shaft.
As a further improvement of the invention, the distance measuring mechanism comprises a protective shell, distance measuring heads, extrusion rods and contact pieces, wherein the distance measuring heads are installed inside the protective shell, the outer side ends of the extrusion rods are welded with the inner wall of the protective shell, the inner side ends of the extrusion rods are provided with the contact pieces, the contact pieces are in contact with the outer sides of the distance measuring heads, the protective shell is arranged inside the outer frame, the middle ends of the outer sides of the protective shell are fixed with the rotating shaft, and the four extrusion rods are spring extrusion rods.
As a further improvement of the invention, the buffer mechanism comprises a support shell, a telescopic support rod and two vibration reduction linkage mechanisms, wherein the middle end inside the support shell is welded with the bottom of the telescopic support rod, the top of the telescopic support rod is welded at the middle end of the bottom of the outer frame, the lower end of the vibration reduction linkage mechanism is arranged inside the support shell, the top of the vibration reduction linkage mechanism is fixed with the outer side of the bottom of the outer frame, and the two vibration reduction linkage mechanisms are respectively arranged at two sides between the support shell and the telescopic support rod.
As a further improvement of the invention, the vibration reduction linkage mechanism comprises a support rod, a linkage plate, articulated shafts, guide rods and a limiting frame, wherein the lower end of the support rod is articulated with one end of the linkage plate, the articulated shafts are arranged at the other end of the linkage plate, the upper ends of the guide rods penetrate through the inside of the articulated shafts in a clearance fit mode, the articulated shafts are arranged inside the limiting frame, the outer side ends of the limiting frame are welded inside the supporting shell, the number of the guide rods is four, and the guide rods are arranged in groups and are respectively arranged at the front ends and the rear ends of the articulated shafts at the two sides.
The invention has the beneficial effects that:
1. through the kicking block in the inside extrusion that stretches out and draws back of spring pipe box, improve magnetic adsorption's fastness between kicking block and the magnetic path, the pivot has driven ranging mechanism after rotating and has rotated, the block can carry out the block after to sliding shaft sliding positioning, improve the inside block ability of sliding shaft at the slide rail, thereby carry out the angle fixed to ranging mechanism bottom, avoid ranging mechanism to take place the angular deviation, elastic support about four extrusion stems in the outside carry out to the contact, to carrying out the damping buffering between range finding head and the protective housing, improve the accuracy of test distance data between range finding head and the massif.
2. The bottom of outer frame extrudees the flexible bracing piece top of the inside middle-end of support shell, and the linkage plate outside rotates on the articulated shaft, and the articulated shaft is guided to move from top to bottom on the guide bar when the pivoted, carries out slight removal buffering from top to bottom between this moment branch and the outer frame, avoids the inside range finding mechanism of outer frame to take place great rocking to range finding mechanism improves real-time supervision's data accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a movable landslide collapse disaster monitoring device according to the present invention.
Fig. 2 is a schematic structural diagram of a monitoring head according to the present invention.
Fig. 3 is a schematic structural diagram of an operating state of an adjusting mechanism according to the present invention.
FIG. 4 is a schematic structural diagram of an engaging mechanism according to the present invention.
Fig. 5 is a schematic diagram of an internal structure of a distance measuring mechanism according to the present invention.
Fig. 6 is a schematic view of an internal structure of a buffer mechanism according to the present invention.
Fig. 7 is a schematic top perspective view of a vibration damping linkage according to the present invention.
In the figure: the device comprises a monitoring head-1, a supporting upright post-2, a movable bottom plate-3, an adjusting mechanism-11, a rotating button-12, a clamping mechanism-13, a buffer mechanism-14, an outer frame-111, a rotating shaft-112, a magnet-113, a spring pipe sleeve-114, a top block-115, a distance measuring mechanism-131, a sliding shaft-132, a sliding rail-133, a clamping block-134, a protective shell-31 a, a distance measuring head-31 b, an extrusion rod-31 c, a collision sheet-31 d, a supporting shell-141, a telescopic supporting rod-142, a vibration reduction linkage mechanism-143, a supporting rod-43 a, a linkage plate-43 b, a hinge shaft-43 c, a guide rod-43 d and a limiting frame-43 e.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 5:
the invention discloses a movable landslide collapse disaster monitoring device which structurally comprises a monitoring head 1, a supporting upright post 2 and a movable bottom plate 3, wherein the lower end of the monitoring head 1 is fixedly arranged at the top of the supporting upright post 2, the movable bottom plate 3 is welded at the lower end of the supporting upright post 2, the monitoring head 1 comprises an adjusting mechanism 11, a rotating button 12, a clamping mechanism 13 and a buffer mechanism 14, the clamping mechanism 13 is arranged at the inner end of the adjusting mechanism 11, the rotating button 12 penetrates through the adjusting mechanism 11 in a clearance fit mode, the rotating button 12 is fixed with the outer end of the clamping mechanism 13, and the bottom of the adjusting mechanism 11 is fixed with the top of the buffer mechanism 14.
Wherein, the adjusting mechanism 11 includes an outer frame 111, a rotating shaft 112, a magnetic block 113, a spring socket 114, and a top block 115, the inner side end of the outer frame 111 is provided with the engaging mechanism 13, the rotating shaft 112 is fixed with the outer side end of the engaging mechanism 13, the rotating shaft 112 penetrates the outer frame 111, the magnetic block 113 is welded on the inner wall of the outer frame 111, the lower end of the top block 115 is installed inside the spring socket 114 by clearance fit, the spring socket 114 is welded on the outer side of the rotating shaft 112, the top block 115 is abutted against the magnetic block 113, the bottom of the outer frame 111 is fixed with the top of the buffering mechanism 14, the number of the spring sockets 114 and the number of the top block 115 are respectively three, the three top blocks are distributed on the upper end of the rotating shaft 112 in arc-shaped equidistance, the top block 115 is made of iron, and can perform magnetic adsorption with the magnetic block 113, the outer top capacity of the top block 115 is improved by the spring inside the spring socket 114, so as to improve the firmness of the magnetic adsorption between the top block 115 and the magnetic block 113, the angle of the rotating shaft 112 is prevented from being deviated.
Wherein, block mechanism 13 includes ranging mechanism 131, sliding shaft 132, slide rail 133, block 134, ranging mechanism 131 establishes at outer frame 111 inboardly to ranging mechanism 131 outside middle-end is fixed mutually with pivot 112, ranging mechanism 131 bottom middle-end is equipped with sliding shaft 132, sliding shaft 132 slidable mounting is inside at slide rail 133 to slide rail 133 is established at the inside lower extreme of outer frame 111, the inboard welding of slide rail 133 has block 134, block 134 is connected with the outside block of sliding shaft 132, block 134 adopts the ebonite material, is equipped with seven groups, and every group has four, is located four ends in the sliding shaft 132 outside respectively, does benefit to and carries out the block with the position after sliding shaft 132 rotates to fix a position the block with the angle after ranging mechanism 131 bottom rotates, avoid ranging mechanism 131 to take place the angle skew.
Wherein, ranging mechanism 131 includes protective housing 31a, range finding head 31b, extrusion stem 31c, conflict piece 31d, protective housing 31a internally mounted has range finding head 31b to the end is welded mutually with protective housing 31a inner wall to the extrusion stem 31c outside, extrusion stem 31c medial extremity is equipped with and supports contact 31d, it is inconsistent with the range finding head 31b outside to support contact 31d, protective housing 31a is established at outer frame 111 inboard, and protective housing 31a outside middle-end is fixed mutually with pivot 112, extrusion stem 31c is equipped with four altogether, and for the spring extrusion stem, can carry out the elastic extrusion, thereby will support contact 31d and carry out closely contradicting with range finding head 31b, improve the fastness of range finding head 31b location monitoring.
The specific use mode and function of the embodiment are as follows:
in the invention, the rotating knob 12 is rotated to drive the rotating shaft 112 to rotate, the top block 115 and the magnetic block 113 perform magnetic adsorption during the rotation of the rotating shaft 112, so that the rotating shaft 112 is angularly fixed, the top block 115 performs telescopic extrusion inside the spring tube sleeve 114, so that the top block 115 is telescopic to improve the firmness of the magnetic adsorption between the top block 115 and the magnetic block 113, the rotating shaft 112 drives the distance measuring mechanism 131 to rotate after rotating, at this time, the sliding shaft 132 at the lower end of the distance measuring mechanism 131 slides inside the sliding rail 133, the sliding shaft 132 can be clamped after being slidably positioned by the clamping block 134, so that the clamping capacity of the sliding shaft 132 inside the sliding rail 133 is improved, thereby angularly fixing the bottom of the distance measuring mechanism 131, avoiding angular deviation of the distance measuring mechanism 131, and the distance measuring head 31b performs vertical elastic support on the abutting contact piece 31d by the four outer extruding rods 31c during the distance measurement, thereby improve and to contact piece 31d and contradict to range finding head 31b, to carrying out the damping buffering between range finding head 31b and the protective housing 31a simultaneously, improve the accuracy of test distance data between range finding head 31b and the massif.
Example 2:
as shown in fig. 6 to 7:
the buffer mechanism 14 includes a support shell 141, a telescopic support rod 142, and a vibration damping linkage mechanism 143, the middle end inside the support shell 141 is welded to the bottom of the telescopic support rod 142, the top of the telescopic support rod 142 is welded to the middle end of the bottom of the outer frame 111, the lower end of the vibration damping linkage mechanism 143 is disposed inside the support shell 141, the top of the vibration damping linkage mechanism 143 is fixed to the outer side of the bottom of the outer frame 111, the two vibration damping linkage mechanisms 143 are disposed, and are respectively disposed on two sides between the support shell 141 and the telescopic support rod 142, so as to facilitate the buffer and vibration damping effects between the telescopic support rod 142 and the outer frame 111, and reduce the shaking generated when the outer frame 111 encounters strong wind.
The vibration reduction linkage mechanism 143 includes a supporting rod 43a, a linkage plate 43b, a hinge shaft 43c, a guide rod 43d, and a limiting frame 43e, wherein the lower end of the supporting rod 43a is hinged to one end of the linkage plate 43b, the other end of the linkage plate 43b is provided with the hinge shaft 43c, the upper end of the guide rod 43d is inserted into the hinge shaft 43c in a clearance fit manner, the hinge shaft 43c is disposed inside the limiting frame 43e, the outer end of the limiting frame 43e is welded inside the supporting shell 141, the number of the guide rods 43d is four, and the two guide rods are a group and are respectively disposed at the front and rear ends of the hinge shaft 43c at two sides, so that the hinge shaft 43c can vertically slide on the guide rod 43d, thereby vertically guiding the linkage plate 43b and slightly moving and buffering the supporting rod 43a and the outer frame 111.
The specific use mode and function of the embodiment are as follows:
in the invention, when strong wind occurs, the distance measuring mechanism 131 is easy to shake, the bottom of the outer frame 111 extrudes the top of the telescopic support rod 142 at the middle end in the support shell 141, the support rod 43a also moves downwards in the extrusion process, the linkage plate 43b is linked, the outer side of the linkage plate 43b rotates on the hinge shaft 43c, the hinge shaft 43c moves up and down on the guide rod 43d in a guiding way while rotating, the limit frame 43e is used for limiting the up-and-down movement distance, the linkage plate 43b is used for carrying out up-and-down linkage buffer support on the support rod 43a, and at the moment, the support rod 43a and the outer frame 111 are buffered by slight up-and-down movement, so that the distance measuring mechanism 131 inside the outer frame 111 is prevented from shaking greatly, and the accuracy of real-time monitoring data is improved by the distance measuring mechanism 131.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (6)
1. The utility model provides a movable landslide disaster monitoring devices that collapses, its structure includes monitoring head (1), support post (2), removes bottom plate (3), monitoring head (1) lower extreme fixed mounting is at support post (2) top to support post (2) lower extreme welding has removal bottom plate (3), its characterized in that:
monitoring head (1) includes adjustment mechanism (11), turn-button (12), block mechanism (13), buffer gear (14), adjustment mechanism (11) medial extremity with be equipped with block mechanism (13) to turn-button (12) adopt clearance fit to run through inside adjustment mechanism (11), turn-button (12) are fixed mutually with block mechanism (13) outside end, adjustment mechanism (11) bottom is fixed mutually with buffer gear (14) top.
2. The movable landslide collapse disaster monitoring device according to claim 1, wherein: adjustment mechanism (11) include outer frame (111), pivot (112), magnetic block (113), spring pipe box (114), kicking block (115), outer frame (111) medial extremity with be equipped with block mechanism (13), pivot (112) are fixed with block mechanism (13) outside end, pivot (112) run through inside outer frame (111), the welding has magnetic block (113) on outer frame (111) inner wall, kicking block (115) lower extreme adopts clearance fit to install inside spring pipe box (114) to spring pipe box (114) welds in pivot (112) outside, and kicking block (115) and magnetic block (113) are inconsistent, outer frame (111) bottom is fixed mutually with buffer gear (14) top.
3. The movable landslide collapse disaster monitoring device according to claim 2, wherein: block mechanism (13) are including ranging mechanism (131), slip axle (132), slide rail (133), block (134), ranging mechanism (131) are established at outer frame (111) inboardly to ranging mechanism (131) outside middle-end is fixed mutually with pivot (112), ranging mechanism (131) bottom middle-end is equipped with slip axle (132), slip axle (132) slidable mounting is inside slide rail (133) to slide rail (133) are established at the inside lower extreme of outer frame (111), the inboard welding of slide rail (133) has block (134), block (134) are connected with slip axle (132) outside block.
4. The movable landslide collapse disaster monitoring device according to claim 3, wherein: range finding mechanism (131) are including protective housing (31 a), range finding head (31 b), extrusion stem (31 c), conflict piece (31 d), protective housing (31 a) internally mounted has range finding head (31 b) to extrusion stem (31 c) outside end welds with protective housing (31 a) inner wall mutually, extrusion stem (31 c) medial extremity is equipped with and supports contact (31 d), it is inconsistent with range finding head (31 b) outside to support contact (31 d), establish at outer frame (111) inboard protective housing (31 a) to protective housing (31 a) outside middle-end is fixed mutually with pivot (112).
5. The movable landslide collapse disaster monitoring device according to claim 2, wherein: buffer gear (14) are including supporting shell (141), flexible bracing piece (142), damping interlock mechanism (143), support the inside middle-end of shell (141) and weld with flexible bracing piece (142) bottom to flexible bracing piece (142) top welds in outer frame (111) bottom middle-end, damping interlock mechanism (143) lower extreme is established inside supporting shell (141), and damping interlock mechanism (143) top is fixed mutually with outer frame (111) bottom outside.
6. The movable landslide collapse disaster monitoring device according to claim 5, wherein: the vibration reduction linkage mechanism (143) comprises a support rod (43 a), a linkage plate (43 b), an articulated shaft (43 c), a guide rod (43 d) and a limiting frame (43 e), wherein the lower end of the support rod (43 a) is articulated with one end of the linkage plate (43 b), the other end of the linkage plate (43 b) is provided with the articulated shaft (43 c), the upper end of the guide rod (43 d) penetrates through the inside of the articulated shaft (43 c) in a clearance fit mode, the articulated shaft (43 c) is arranged inside the limiting frame (43 e), and the outer end of the limiting frame (43 e) is welded inside the supporting shell (141).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126118.5A CN113781748B (en) | 2021-09-26 | 2021-09-26 | Movable landslide collapse disaster monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126118.5A CN113781748B (en) | 2021-09-26 | 2021-09-26 | Movable landslide collapse disaster monitoring device |
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| Publication Number | Publication Date |
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| CN113781748A true CN113781748A (en) | 2021-12-10 |
| CN113781748B CN113781748B (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111126118.5A Active CN113781748B (en) | 2021-09-26 | 2021-09-26 | Movable landslide collapse disaster monitoring device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001216593A (en) * | 2000-02-01 | 2001-08-10 | Kazuya Sasaki | Rolling rock, falling rock and landslide warning device |
| CN208751490U (en) * | 2018-09-30 | 2019-04-16 | 宜宾学院 | A kind of geological landslide displacement parameter acquisition monitoring device |
| CN111005981A (en) * | 2019-11-08 | 2020-04-14 | 西安呱牛信息技术有限公司 | Anti-impact method and device for perimeter security system |
| CN210927813U (en) * | 2019-12-30 | 2020-07-03 | 南京海盟基业科技有限公司 | Split type terminal of high definition video conference convenient to adjust |
| CN211252453U (en) * | 2019-12-20 | 2020-08-14 | 深圳市壹方智能电子科技有限公司 | Fixed limit structure of vehicle-mounted camera |
| CN212620828U (en) * | 2020-08-07 | 2021-02-26 | 牙东屹 | Landslide and debris flow monitoring device |
| CN212983184U (en) * | 2020-05-29 | 2021-04-16 | 平阳县塑料圆织包装六厂 | Weaving support for processing plastic woven bag |
| JP2021068687A (en) * | 2019-10-22 | 2021-04-30 | 呉剛 | Environmental protection type wind energy search light used in construction site |
-
2021
- 2021-09-26 CN CN202111126118.5A patent/CN113781748B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001216593A (en) * | 2000-02-01 | 2001-08-10 | Kazuya Sasaki | Rolling rock, falling rock and landslide warning device |
| CN208751490U (en) * | 2018-09-30 | 2019-04-16 | 宜宾学院 | A kind of geological landslide displacement parameter acquisition monitoring device |
| JP2021068687A (en) * | 2019-10-22 | 2021-04-30 | 呉剛 | Environmental protection type wind energy search light used in construction site |
| CN111005981A (en) * | 2019-11-08 | 2020-04-14 | 西安呱牛信息技术有限公司 | Anti-impact method and device for perimeter security system |
| CN211252453U (en) * | 2019-12-20 | 2020-08-14 | 深圳市壹方智能电子科技有限公司 | Fixed limit structure of vehicle-mounted camera |
| CN210927813U (en) * | 2019-12-30 | 2020-07-03 | 南京海盟基业科技有限公司 | Split type terminal of high definition video conference convenient to adjust |
| CN212983184U (en) * | 2020-05-29 | 2021-04-16 | 平阳县塑料圆织包装六厂 | Weaving support for processing plastic woven bag |
| CN212620828U (en) * | 2020-08-07 | 2021-02-26 | 牙东屹 | Landslide and debris flow monitoring device |
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| CN113781748B (en) | 2023-02-24 |
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