CN115535892A - Falling protector with fatigue damage degree display function - Google Patents
Falling protector with fatigue damage degree display function Download PDFInfo
- Publication number
- CN115535892A CN115535892A CN202211011864.4A CN202211011864A CN115535892A CN 115535892 A CN115535892 A CN 115535892A CN 202211011864 A CN202211011864 A CN 202211011864A CN 115535892 A CN115535892 A CN 115535892A
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- China
- Prior art keywords
- plate
- limiting
- fixedly connected
- fatigue damage
- steel wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Lowering Means (AREA)
Abstract
The invention relates to the technical field of falling protectors, and discloses a falling protector with a fatigue damage degree display function. The detection mechanism can measure the deformation amount of the steel wire rope in the using process, so that whether the tensile quantity of the steel wire rope exceeds the standard or not is judged, the fatigue damage of the current steel wire rope can be known after the steel wire rope exceeds the standard, the steel wire rope is convenient to replace in time, the installation mechanism can be convenient for a user to actually install the shell, the shell can be installed in an external tower crane, the height and the width of the installation mechanism are adjustable, the installation can be carried out according to the actual environment in the tower crane, and the application range is widened.
Description
Technical Field
The invention relates to the technical field of falling protectors, in particular to a falling protector with fatigue damage degree display function.
Background
The falling protector is also called a speed difference device, can quickly brake and lock falling objects within a limited distance, is suitable for cargo hoisting, protects the life safety of ground operators and prevents the objects of a hoisted workpiece from being damaged, is automatically controlled by utilizing the falling speed difference of the objects, is used for high hanging and low hanging, and can be used only by hanging a nylon lifting rope on a structure which strides over a firm blunt edge above the nylon lifting rope during TXS2 series use, hanging an iron hook on the nylon rope into an n-shaped ring and hanging the iron hook on a steel wire rope into a semicircular ring on a safety belt.
When the existing falling protector is used, the deformation amount of the steel wire rope in the using process is difficult to measure, whether the current steel wire rope has fatigue damage or not can not be known, the existing falling protector is difficult to install according to the actual environment in a tower crane, and the application range is limited. Accordingly, one skilled in the art provides a fall arrester with fatigue damage indication to address the problems set forth in the background above.
Disclosure of Invention
The invention aims to provide a falling protector with fatigue damage degree display, a detection mechanism can measure deformation quantity of a steel wire rope in the using process so as to judge whether the tensile quantity of the steel wire rope exceeds the standard, the fatigue damage of the current steel wire rope can be known after the tensile quantity exceeds the standard, the steel wire rope can be conveniently replaced in time, the detection mechanism can display the tensile quantity of the steel wire rope in real time, the actual observation is easy, an installation mechanism can be convenient for a user to actually install a shell, the shell can be installed in an external tower crane, the height and the width of the installation mechanism can be adjusted, the installation can be carried out according to the actual environment in the tower crane, the application range is improved, and the actual use of the shell is easy.
In order to achieve the purpose, the invention provides the following technical scheme:
a falling protector with fatigue damage degree display comprises a shell, wherein the bottom of the shell is connected with a steel wire rope, the top of the shell is connected with a hanging ring, the lower surface of the shell is further provided with a detection mechanism, and the top of the hanging ring is provided with an installation mechanism;
the detection mechanism comprises an installation pipe, a limiting plate, a supporting plate, a sliding plate, a connecting rod, an indicating plate, a spring, a scale plate and a second limiting wheel, wherein the first limiting wheel is fixedly connected to one side of the inner wall of the installation pipe, the top and the bottom of the installation pipe are fixedly connected with fastening discs, the connecting rod penetrates through the side wall of the installation pipe in a movable mode, the supporting plate and the scale plate are fixedly connected to the outer side wall of the installation pipe, one end of the connecting rod is fixedly connected with the limiting plate, the spring is movably sleeved outside the connecting rod, the indicating plate is fixedly connected to the upper surface of the connecting rod, the sliding plate is fixedly connected to the lower surface of the connecting rod, and the second limiting wheel is fixedly connected to the limiting plate;
the mounting mechanism comprises a first adjusting pipe, a first bidirectional screw, a second adjusting pipe, a fixing plate, a limiting groove, a second bidirectional screw, a first locking block, a first locking ring and a first hook, the first adjusting pipe is sleeved on the bottom end thread of the first bidirectional screw, the second adjusting pipe is sleeved on the top end thread of the first bidirectional screw, the fixing plate is fixedly connected to the top end of the second adjusting pipe, the limiting groove is transversely formed in the upper surface and the lower surface of the fixing plate, the first locking ring and the second locking ring are sleeved on the outer portion of the fixing plate in a movable mode, the second bidirectional screw is mounted inside the fixing plate, the first locking block and the second locking block are sleeved on the outer thread of the second bidirectional screw, the limiting blocks are fixedly connected to the upper surface and the lower surface of the first locking block and the lower surface of the second locking block, the first locking ring is connected to the upper portion of the first locking ring through a lifting rope, and the second locking ring is connected to the second hook through the lifting rope.
As a still further scheme of the invention: the steel wire rope is movably arranged between the first limiting wheel and the second limiting wheel, and the first limiting wheel and the second limiting wheel are distributed oppositely.
As a still further scheme of the invention: two the mounting groove has all been seted up to the inside of fastening disc, is the annular equidistance on the inner wall of mounting groove and installs six balls, six the ball distributes respectively in wire rope's periphery department, and wire rope movable mounting is in the inside of mounting groove, two the fastening disc is the plastics material.
As a still further scheme of the invention: the top rigid coupling of installation pipe is in the lower surface of casing, and the spout has transversely been seted up to the upper surface of backup pad, and slide sliding connection is in the inside of spout, links up the pole and be horizontal distribution, and links up pole and installation pipe mutually perpendicular.
As a still further scheme of the invention: the front surface of scale plate still is provided with the scale mark, and the top movable mounting of indicator plate is on the lower surface of scale plate, and the one end of spring is connected on the inner wall of installation pipe, and the other end of spring is connected on the limiting plate.
As a still further scheme of the invention: one end of the second bidirectional screw rod movably penetrates through the side wall of the fixing plate and extends to the outer side of the fixing plate, and the other end of the second bidirectional screw rod is rotatably connected inside the fixing plate through a bearing.
As a still further scheme of the invention: the bottom rigid coupling of first control pipe is at the top of link, and the length of first control pipe and second control pipe equals, and just first control pipe and second control pipe are relative distribution, and second control pipe and fixed plate mutually perpendicular.
As a still further scheme of the invention: the limiting block is connected inside the limiting groove in a sliding mode, a first thread groove matched with the second bidirectional screw is formed in the inner wall of the first locking block, a second thread groove matched with the second bidirectional screw is formed in the inner wall of the second locking block, and the thread directions of the first thread groove and the second thread groove are opposite.
As a still further scheme of the invention: the first locking ring and the second locking ring are of a structure shaped like a Chinese character 'hui', the number of the limiting blocks is four, two of the limiting blocks are fixedly connected to two sides of the inner wall of the first locking ring, and the other two limiting blocks are fixedly connected to two sides of the inner wall of the second locking ring.
Compared with the prior art, the invention has the beneficial effects that:
1. the detection mechanism can measure the deformation of the steel wire rope in the using process, so that whether the tensile strength of the steel wire rope exceeds the standard or not is judged, the fatigue damage of the steel wire rope at present can be known after the tensile strength exceeds the standard, the steel wire rope is convenient to replace in time, and the tensile strength of the steel wire rope can be displayed in real time by the detection mechanism, so that the actual observation is easy;
2. installation mechanism can the user of being convenient for carry out actual installation to the casing for the casing can be installed in the tower crane of outside, and this installation mechanism's height and width are adjustable moreover, can install according to the actual environment in the tower crane, and application scope has obtained the promotion, easily the in-service use of casing.
Drawings
FIG. 1 is a schematic view of a fall arrestor with a fatigue damage display;
FIG. 2 is a schematic diagram of a detection mechanism in the fall arrester with fatigue damage degree display;
FIG. 3 is a schematic view of the internal structure of a mounting groove in the safety catcher with fatigue damage degree display;
FIG. 4 is a schematic structural diagram of a mounting mechanism in the fall arrester with fatigue damage indication;
fig. 5 is a schematic structural diagram of a limiting block in the falling protector with fatigue damage degree display.
In the figure: 1. a housing; 11. a wire rope; 12. hanging a ring; 2. a detection mechanism; 21. installing a pipe; 211. a first limit wheel; 212. fastening a disc; 213. mounting grooves; 214. a ball bearing; 22. a limiting plate; 23. a support plate; 24. a slide plate; 25. a connecting rod; 26. an indicator panel; 27. a spring; 28. a scale plate; 29. a second limiting wheel; 3. an installation mechanism; 31. a first regulating tube; 32. a first bidirectional screw; 33. a second regulating tube; 34. a fixing plate; 341. a limiting groove; 342. a second bidirectional screw; 343. a first locking block; 344. a second locking block; 35. a first lock ring; 36. a first hook; 37. a limiting block; 38. a second lock ring; 39. and a second hook.
Detailed Description
Example 1
Referring to fig. 1 to 3, a falling protector with fatigue damage display includes a housing 1, a steel wire 11 is connected to the bottom of the housing 1, a suspension loop 12 is connected to the top of the housing 1, a detection mechanism 2 is further installed on the lower surface of the housing 1, the detection mechanism 2 includes a mounting tube 21, a limiting plate 22, a support plate 23, a sliding plate 24, an engaging rod 25, an indicating plate 26, a spring 27, a scale plate 28 and a second limiting wheel 29, a first limiting wheel 211 is fixedly connected to one side of the inner wall of the mounting tube 21, a fastening disc 212 is fixedly connected to the top and the bottom of the mounting tube 21, the side wall of the mounting tube 21 movably penetrates through the engaging rod 25, the support plate 23 and the scale plate 28 are fixedly connected to the outer side wall of the mounting tube 21, the supporting plate 23 and the scale plate 28 are fixedly connected to one end of the engaging rod 25, a spring 27 is movably sleeved on the outer portion of the engaging rod 25, the upper surface of the engaging rod 25 has the indicating plate 26, the lower surface of the engaging rod 25 has the sliding plate 24, the second limiting wheel 29 is fixedly connected to the upper surface of the limiting plate 22, the steel wire 11 is movably mounted between the first limiting wheel 29 and the second limiting plate 11, the two sliding grooves are formed by a plastic sliding disc, the mounting groove 214, the inner wall of the sliding groove is formed by the mounting groove 214, the sliding plate 21, the two sliding grooves formed by the sliding plate 21, the sliding grooves, the two sliding grooves are formed by the sliding grooves formed by the sliding plate 23 and the sliding plate 23, the sliding grooves formed by the sliding plate 28, the sliding plate 23, one end of the spring 27 is connected to the inner wall of the installation pipe 21, the other end of the spring 27 is connected to the limiting plate 22, the detection mechanism 2 can measure the deformation amount of the steel wire rope 11 in the using process, and therefore whether the tensile amount of the steel wire rope 11 exceeds the standard or not is judged, the fatigue damage of the current steel wire rope 11 can be known after the tensile amount exceeds the standard, the steel wire rope 11 can be replaced conveniently and timely, and the detection mechanism 2 can display the tensile amount of the steel wire rope 11 in real time and is easy to actually observe.
In fig. 1, 4 and 5, the mounting mechanism 3 is mounted on the top of the hanging ring 12, the mounting mechanism 3 includes a first adjusting pipe 31, a first bidirectional screw 32, a second adjusting pipe 33, a fixing plate 34, a limiting groove 341, a second bidirectional screw 342, a first locking block 343, a first locking ring 35 and a first hook 36, the first adjusting pipe 31 is sleeved on the bottom end of the first bidirectional screw 32 through threads, the second adjusting pipe 33 is sleeved on the top end of the first bidirectional screw 32 through threads, the fixing plate 34 is fixedly connected to the top end of the second adjusting pipe 33, the limiting groove 341 is transversely formed on the upper and lower surfaces of the fixing plate 34, the first locking ring 35 and the second locking ring 38 are movably sleeved on the outer portion of the fixing plate 34, the second bidirectional screw is mounted inside the fixing plate 34, the first locking block 343 and the second locking block 344 are sleeved on the outer portion of the second bidirectional screw 342 through threads, the upper and lower surfaces of the first locking block 343 and the second locking block 344 are fixedly connected to the limiting block 37, a first hook 36 is connected above the first locking ring 35 through a lifting rope, a second hook 39 is connected above the second locking ring 38 through a lifting rope, one end of a second bidirectional screw 342 movably penetrates through the side wall of the fixing plate 34 and extends to the outer side of the fixing plate 34, the other end of the second bidirectional screw 342 is rotatably connected inside the fixing plate 34 through a bearing, the bottom end of the first adjusting pipe 31 is fixedly connected to the top of the hanging ring 12, the lengths of the first adjusting pipe 31 and the second adjusting pipe 33 are equal, the first adjusting pipe 31 and the second adjusting pipe 33 are oppositely distributed, the second adjusting pipe 33 and the fixing plate 34 are mutually perpendicular, a limiting block 37 is slidably connected inside the limiting groove 341, a first thread groove matched with the second bidirectional screw 342 is formed in the inner wall of the first locking block 343, a second thread groove matched with the second bidirectional screw 342 is formed in the inner wall of the second locking block 344, the screw thread opposite direction of first thread groove and second thread groove, first catch 35 and second catch 38 are "back" font structure, stopper 37's quantity is four, wherein two stopper 37 rigid couplings are in the inner wall both sides department of first catch 35, two other stopper 37 rigid couplings are in the inner wall both sides department of second catch 38, installation mechanism 3 can be convenient for the user carries out actual installation to casing 1, make casing 1 can install in the tower crane of outside, and this installation mechanism 3's height and width are adjustable, can install according to the actual environment in the tower crane, application scope has obtained the promotion, easily casing 1's in-service use.
When the tower crane is used, the first bidirectional screw 32 is held by a hand to rotate forwards, the first adjusting pipe 31 and the second adjusting pipe 33 can be driven to move relatively, the first bidirectional screw 32 is held by the hand to rotate backwards, the first adjusting pipe 31 and the second adjusting pipe 33 can be driven to move oppositely, the second bidirectional screw 342 is held by the hand to rotate forwards, the first locking block 343 and the second locking block 344 can be driven to move oppositely, the first locking ring 35 and the second locking ring 38 can be driven to move oppositely through the limiting block 37, similarly, the second bidirectional screw 342 is held by the hand to rotate backwards, the first locking block 343 and the second locking block 344 can be driven to move relatively, the first locking ring 35 and the second locking ring 38 can be driven to move relatively through the limiting block 37, and then the first hook 36 and the second hook 39 can be hung on the tower crane by a user, so that the installation mechanism 3 can be convenient for the user to actually install the tower crane 1, the shell 1 can be arranged in an external tower crane, the height and the width of the installation mechanism 3 can be adjusted, the installation can be carried out according to the actual environment in the tower crane, the application range is improved, the practical use of the shell 1 is easy, when the steel wire rope 11 is thin, the second limiting wheel 29 can be driven to move leftwards under the action of the spring 27, the limiting plate 22 and the connecting rod 25 can be driven to move leftwards after the second limiting wheel 29 moves leftwards, the indicating plate 26 is driven to move leftwards, and then a user only needs to observe scale marks on the scale plate 28, so that the detection mechanism 2 can measure the deformation quantity of the steel wire rope 11 in the use process, whether the tensile quantity of the steel wire rope 11 exceeds the standard or not is judged, the fatigue damage of the current steel wire rope 11 can be known after the tensile quantity exceeds the standard, the steel wire rope 11 can be conveniently replaced in time, and the detection mechanism 2 can display the tensile quantity of the steel wire rope 11 in real time, easy to be observed practically.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed.
Claims (9)
1. A falling protector with fatigue damage degree display comprises a shell (1), wherein the bottom of the shell (1) is connected with a steel wire rope (11), and the top of the shell (1) is connected with a hanging ring (12), and is characterized in that the lower surface of the shell (1) is further provided with a detection mechanism (2), and the top of the hanging ring (12) is provided with an installation mechanism (3);
the detection mechanism (2) comprises a mounting pipe (21), limiting plates (22), a supporting plate (23), a sliding plate (24), a linking rod (25), an indicating plate (26), a spring (27), a scale plate (28) and a second limiting wheel (29), wherein the first limiting wheel (211) is fixedly connected to one side of the inner wall of the mounting pipe (21), the top and the bottom of the mounting pipe (21) are fixedly connected with fastening discs (212), the linking rod (25) penetrates through the side wall of the mounting pipe (21) in a movable mode, the supporting plate (23) and the scale plate (28) are fixedly connected to the outer side wall of the mounting pipe (21), the limiting plate (22) is fixedly connected to one end of the linking rod (25), the spring (27) is movably sleeved on the outer portion of the linking rod (25), the indicating plate (26) is fixedly connected to the upper surface of the linking rod (25), the sliding plate (24) is fixedly connected to the lower surface of the linking rod (25), and the second limiting wheel (29) is fixedly connected to the limiting plate (22);
the installation mechanism (3) comprises a first adjusting pipe (31), a first bidirectional screw (32), a second adjusting pipe (33), a fixing plate (34), a limiting groove (341), a second bidirectional screw (342), a first locking block (343), a first locking ring (35) and a first hook (36), the first adjusting pipe (31) is sleeved on the bottom end of the first bidirectional screw (32) in a threaded mode, the second adjusting pipe (33) is sleeved on the top end of the first bidirectional screw (32) in a threaded mode, the fixing plate (34) is fixedly connected to the top end of the second adjusting pipe (33), the limiting groove (341) is transversely formed in the upper surface and the lower surface of the fixing plate (34), the first locking ring (35) and the second locking ring (38) are sleeved on the outer portion of the fixing plate (34), the second bidirectional screw (342) is installed inside the fixing plate (34), the first locking block (343) and the second locking block (344) are sleeved on the outer surface of the second bidirectional screw (342), the first locking block (343) and the second locking block (37) are fixedly connected with the second locking ring (38) through the hanging rope (39), and the second locking ring (38) is connected to the upper portion of the hanging rope.
2. The fall arrester with fatigue damage degree display function according to claim 1, wherein the steel wire rope (11) is movably arranged between the first limiting wheel (211) and the second limiting wheel (29), and the first limiting wheel (211) and the second limiting wheel (29) are distributed oppositely.
3. The fall arrester with fatigue damage degree display according to claim 1, characterized in that mounting grooves (213) are formed in both the fastening discs (212), six balls (214) are annularly and equidistantly mounted on the inner wall of the mounting grooves (213), the six balls (214) are respectively distributed at the periphery of the steel wire rope (11), the steel wire rope (11) is movably mounted in the mounting grooves (213), and both the fastening discs (212) are made of plastic.
4. The fall arrester with fatigue damage degree display according to claim 1, characterized in that the top of the mounting tube (21) is fixed on the lower surface of the housing (1), the upper surface of the supporting plate (23) is transversely provided with a sliding slot, the sliding plate (24) is slidably connected inside the sliding slot, the connecting rod (25) is horizontally distributed, and the connecting rod (25) and the mounting tube (21) are perpendicular to each other.
5. The fall arrester with fatigue damage degree display function according to claim 1, characterized in that the front surface of the scale plate (28) is further provided with scale lines, the top of the indicator plate (26) is movably mounted on the lower surface of the scale plate (28), one end of the spring (27) is connected to the inner wall of the mounting pipe (21), and the other end of the spring (27) is connected to the limit plate (22).
6. The fall arrester with fatigue damage degree display as recited in claim 1, wherein one end of the second two-way screw rod (342) is movably penetrated through the side wall of the fixed plate (34) and extends to the outer side of the fixed plate (34), and the other end of the second two-way screw rod (342) is rotatably connected inside the fixed plate (34) through a bearing.
7. The fall arrester with fatigue damage degree display function according to claim 1, characterized in that the bottom end of the first adjusting pipe (31) is fixedly connected to the top of the suspension ring (12), the lengths of the first adjusting pipe (31) and the second adjusting pipe (33) are equal, the first adjusting pipe (31) and the second adjusting pipe (33) are distributed oppositely, and the second adjusting pipe (33) and the fixing plate (34) are perpendicular to each other.
8. The fall arrester with fatigue damage degree display function according to claim 1, wherein the limiting block (37) is slidably connected inside the limiting groove (341), the inner wall of the first locking block (343) is provided with a first thread groove adapted to the second bidirectional screw (342), the inner wall of the second locking block (344) is provided with a second thread groove adapted to the second bidirectional screw (342), and the thread directions of the first thread groove and the second thread groove are opposite.
9. The fall arrester with fatigue damage degree display as claimed in claim 1, wherein the first locking ring (35) and the second locking ring (38) are both of a "return" shape structure, and the number of the limiting blocks (37) is four, wherein two of the limiting blocks (37) are fixedly connected at two sides of the inner wall of the first locking ring (35), and the other two limiting blocks (37) are fixedly connected at two sides of the inner wall of the second locking ring (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211011864.4A CN115535892A (en) | 2022-08-23 | 2022-08-23 | Falling protector with fatigue damage degree display function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211011864.4A CN115535892A (en) | 2022-08-23 | 2022-08-23 | Falling protector with fatigue damage degree display function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115535892A true CN115535892A (en) | 2022-12-30 |
Family
ID=84725218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211011864.4A Withdrawn CN115535892A (en) | 2022-08-23 | 2022-08-23 | Falling protector with fatigue damage degree display function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115535892A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118294128A (en) * | 2024-06-05 | 2024-07-05 | 潍坊晟华新能源科技有限公司 | Anti-falling safety detection device for iron tower |
-
2022
- 2022-08-23 CN CN202211011864.4A patent/CN115535892A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118294128A (en) * | 2024-06-05 | 2024-07-05 | 潍坊晟华新能源科技有限公司 | Anti-falling safety detection device for iron tower |
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Application publication date: 20221230 |