CN220789597U - Self-adaptive freight transportation pontoon - Google Patents
Self-adaptive freight transportation pontoon Download PDFInfo
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- CN220789597U CN220789597U CN202322409120.4U CN202322409120U CN220789597U CN 220789597 U CN220789597 U CN 220789597U CN 202322409120 U CN202322409120 U CN 202322409120U CN 220789597 U CN220789597 U CN 220789597U
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- 238000007667 floating Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000003044 adaptive effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a self-adaptive freight floating dock, which comprises a wharf, an approach bridge and a fixed dock, wherein the lower end of the approach bridge is movably connected to the wharf, and the upper end of the approach bridge is movably connected to the fixed dock. The utility model can realize the self-adaptive adjustment of the approach bridge more conveniently and more reliably along with the change of the wharfboat, and better improves the landing safety of cargoes.
Description
Technical Field
The utility model relates to the technical field of freight wharf structures, in particular to a self-adaptive freight wharf.
Background
A pontoon, which is a wharf consisting of pontoons for berthing ships and anchored on the shore; also known as a wharf. Pontoons are typically composed of pontoons, movable access bridges, and revetments (fixed wharfs). In order to better ensure that the freight is not influenced by water level change, topography, geological conditions and the like, the freight wharf is generally more suitable to be in a pontoon structure type, namely, a pontoon is arranged in a river channel and is connected with a quay by a steel approach bridge. The steel bridge approach is paved with a belt conveyor, a conveying pipeline and the like, and mainly bears dead weight, cargo load and crowd load. The pontoon floats on the water surface all the year round, and although steel cables and anchoring positioning are adopted, the pontoon is often subjected to the load actions of flood fluctuation of water level, water flow impact, strong wind blowing and moving, floating object accumulation, ship berthing impact and the like, the position of the pontoon is changed frequently, the pontoon can float up and down along with the fluctuation of the water level and longitudinally swings along the upstream and downstream directions, and meanwhile, the pontoon moves along with the transverse movement leaning against the river bank in the process of berthing the ship and the like, and the position movement is larger. Therefore, the pontoon and the bridge-approach have X, Y, Z three-way swing characteristics, and the upper and lower connecting ends of the steel bridge-approach must be adjusted in real time along with the three-way swing. The large pontoon movement can cause the falling of the steel bridge approach, the instability of the support or the distortion of the steel bridge approach, cause the damage of the wharf, the failure of normal operation, the serious ship accident and the casualties, and the loss of production, operation, life and property of enterprises.
CN202121654243.9 discloses a wind-resistant and wave-resistant pontoon structure, which comprises a pontoon, a plurality of positioning mechanisms, a plurality of anchor chains and a bridge approach, wherein one end of the bridge approach is in sliding connection with a embankment, the other end of the bridge approach is erected on the pontoon, each positioning mechanism is arranged at intervals along the outer side of the pontoon and has a first gap with the pontoon, each positioning mechanism comprises a plurality of fixing piles, the anchor chains are connected with the pontoon and the fixing piles, the pontoon is provided with a plurality of telescopic fixing beams, one side of each positioning mechanism, which is close to the pontoon, is provided with a vertical longitudinal groove, and one fixing beam is inserted into the longitudinal groove and can slide along the longitudinal groove. When the wharf works, the wharf is extended into the longitudinal groove by the fixed beam to provide constraint, so that the wharf can uniformly change along with the water level in the longitudinal direction, and further the wharf has good stability in a working state.
The patent can solve the problems of up-and-down sliding and left-and-right swinging between the approach bridge and the embankment in the lap joint to a certain extent, but the following defects still exist. The first is that the landing points of the bridge approach and the embankment in the pontoon structure of the patent can move up and down along the slope along with the fluctuation of the pontoon, and the landing points are not fixed, so that the cargo transportation landing can be influenced after the landing points move downwards. The second is to set up the pivot and realize rotatable connection and solve the swing problem by the approach bridge and between the movable base, rotate the junction bearing like this and be great easily damaged, lead to stability relatively poor, life is shorter. Thirdly, the connection of the approach bridge and the embankment also lacks sufficient traction guarantee, and the stability of use is also affected. The solution of this patent still has the drawback of poor stability, which reduces the safety of the cargo transportation and landing process.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: how to provide a can realize the self-adaptation adjustment along with the wharf change, the self-adaptation freight transportation pontoon of the stability of better improvement approach bridge connection has improved the security of goods landing.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a self-adaptation formula freight transportation pontoon, includes pontoon, approach bridge and fixed wharf, and approach bridge lower extreme swing joint is on the pontoon, and upper end swing joint is on fixed sign indicating number head, its characterized in that still is provided with draw gear, and draw gear includes wire rope and winch, and the approach bridge passes through wire rope and is located the winch on the fixed sign indicating number head and links to each other.
Like this, set up wire rope draw gear in this pontoon, when meeting the boats and ships of different large and small tonnage and berthing, when needing to adjust the pontoon position of berthing, can control through wire rope traction approach bridge and correspond the removal, cooperate the pontoon to remove better, realize adjusting better.
Further, the winch is arranged at the position close to the inner side of the fixed wharf, one end of the steel wire rope is fixed at the lower end of the bridge, the other end of the steel wire rope upwards bypasses the first fixed pulley positioned at the outer side of the fixed wharf and the second fixed pulley positioned near the winch, and after the winch is connected, the steel wire rope outwards bypasses the third fixed pulley positioned near the winch and the fourth fixed pulley positioned near the outer side of the fixed wharf to be fixed with the upper end of the bridge.
Therefore, when the wharf needs to be moved towards the side, the winch is controlled to rotate to pull the lower end of the bridge so as to move towards the side; when the wharf boat needs to be moved towards the direction of the river center, the winch is controlled to rotate reversely to pull the upper end of the approach bridge, and reverse movement control and adjustment can be achieved. Has the advantages of convenient, reliable and stable control.
Further, the upper end of the approach bridge is movably connected with the fixed wharf through an upper supporting device, the upper supporting device comprises an upper supporting seat, the upper end of the upper supporting seat is slidably clamped and matched with the approach bridge, and the lower end of the upper supporting seat can be horizontally and rotatably arranged and fixed on the upper surface position of the fixed wharf, which is close to the front edge.
Therefore, in the scheme, the upper end of the upper supporting seat is slidably clamped and matched with the approach bridge, the displacement caused by the floating approach bridge of the wharf along the far-near direction can be absorbed, the lower end of the upper supporting seat is horizontally matched with the fixed wharf in a rotating manner, and the approach bridge swing caused by the movement of the wharf along the water flow direction can be absorbed, so that the self-adaptive adjustment of the approach bridge can be well realized. Meanwhile, compared with the patent proposal in the background technology, because the rotary fit between the lower end of the upper supporting seat and the fixed wharf is realized, enough rotary supporting structures can be arranged to realize rotary supporting, thereby better ensuring the stability.
Further, the upper supporting seat comprises a rotating cross beam arranged along the width direction of the approach bridge, the middle part of the rotating cross beam is rotatably connected with a rotating support fixedly arranged on the fixed wharf through an upper rotating shaft arranged vertically, rotating rollers are respectively arranged downwards on the lower surfaces of two ends of the rotating cross beam, and the rotating rollers are matched with an arc-shaped guide rail which is integrally circular and fixedly arranged on the fixed wharf.
Therefore, by means of the cooperation of the rotating rollers at the two ends of the rotating cross beam and the arc-shaped guide rail, the supporting pressure is dispersed, and the stability and the reliability of the horizontal rotating support are greatly improved. When the pontoon changes, the horizontal or lifting angle of the approach bridge can be automatically adjusted, so that the smoothness of the channel on the approach bridge is ensured, the problem that the pontoon is separated from the approach bridge or the pontoon is prevented from lifting and swinging in the horizontal direction in the prior art is effectively solved, the stability of the approach bridge is ensured, and the pontoon and the approach bridge can be enabled to have the effective wind-resistant, shock-resistant and collision-resistant capabilities, and the safety and the reliability are realized.
Further, a pair of rotating rollers are respectively arranged downwards on the lower surfaces of the two ends of the rotating cross beam.
This can further disperse the supporting pressure and improve the stability.
Further, the upper surfaces of the two ends of the rotating cross beam are respectively provided with an upward sliding roller, the two ends of the sliding rollers are upward provided with limit stops, the two sides of the approach bridge are downwards provided with sliding guide rails in a protruding mode, and the sliding guide rails are matched with the sliding rollers and limited in the limit stops.
Therefore, the up-and-down sliding fit of the approach bridge along the upper supporting seat can be realized more smoothly, and the up-and-down movement stability of the approach bridge is ensured.
Further, the upper end of the slide rail has a limit stop protruding downward.
Therefore, the upper end of the approach bridge can be well prevented from sliding out of the upper supporting seat, and stability and safety are well ensured.
Further, lower support rollers are respectively arranged at two sides of the lower end of the approach bridge downwards, a supporting seat is also arranged on the pontoon in an upward protruding mode, and the supporting seat is located in the front-back direction and the two outer side directions of the lower support rollers and achieves limiting.
Therefore, the lower end of the approach bridge is directly simply supported on the pontoon, the movable connection between the lower end of the approach bridge and the pontoon can be better realized, and when the pontoon shifts, the lower support roller can roll in the range limited by the supporting seat, so that the approach bridge is prevented from slipping and the floatability of the approach bridge is ensured.
Further, the pontoon is further fixedly provided with an anchor chain and fixedly connected with the lower end of the approach bridge outside the retaining seat.
Thus, the stability of the connection between the approach bridge and the pontoon is further ensured, and the approach bridge is prevented from being separated from the pontoon.
Further, the upper end part of the approach bridge is also rotatably connected with an upper access board, and the lower end part is also rotatably connected with a lower access board. Therefore, the goods can be more conveniently guided up and down.
Further, the upper access panel comprises a double-layer or multi-layer access panel which is arranged in a drawing mode. The length of the upper access board is conveniently adjusted, so that the length of the upper access board is correspondingly adjusted when the bridge approach position is adjusted, and the upper surface lap joint of the wharf is conveniently and fixedly connected.
Further, a downward step is arranged on one side of the fixed wharf close to the river channel, and the upper supporting device is installed on the step.
Therefore, the upper end of the approach bridge is more conveniently overlapped with the upper surface of the fixed wharf through the upper butt strap.
Further, the approach bridge is made of steel structure materials. The strength is better ensured.
The scheme has the following advantages and effects: when the water level rises or falls, the swing angle of the pontoon and the steel bridge approach can be changed, so that unpowered automatic adjustment of the angle of the steel bridge approach is realized, the connection stability between the steel bridge approach and the pontoon and between the steel bridge approach and the wharf is ensured, and the problems that the self weight of the steel bridge approach in the existing pontoon is too large, the adjustment is difficult, the pontoon needs to frequently move, and the like are solved. When the steel bridge approach occupies a main channel at a medium-high water level, the steel bridge approach can be telescopic or piled up in a rear land area when navigation safety hidden trouble exists or overhaul is needed. The device does not need heavy physical labor, is not only suitable for liquid cargo pipeline transportation and dry bulk cargo belt conveyor transportation, but also can be used for passenger terminals by additionally arranging adjustable gradient steps on a steel approach bridge. Novel in design, convenient in adjustment, time-saving, labor-saving, safe and reliable.
In conclusion, the utility model can realize the self-adaptive adjustment of the approach bridge more conveniently, rapidly and reliably along with the change of the pontoon, and better improves the landing safety of cargoes.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the adaptive freight pontoon according to an embodiment.
Fig. 2 is a schematic diagram of the approach bridge of fig. 1 after being pulled upwards.
Fig. 3 is an enlarged schematic view of a partial structure at the position of the separate upper supporting means in fig. 1.
Fig. 4 is a schematic front view of the upper support assembly of fig. 3.
Fig. 5 is a top view of the individual arcuate rail portion structure of fig. 3.
Fig. 6 is an enlarged schematic view of a partial structure of the position of the single lower support roller of fig. 1.
Fig. 7 is a schematic front view of the lower support roller of fig. 6.
Fig. 8 is a top view of the abutment structure of fig. 6.
Detailed Description
The present utility model will be described in further detail with reference to the following embodiments.
Examples: referring to fig. 1-8, a self-adaptive freight floating terminal comprises a pontoon 1, an approach bridge 2 and a fixed wharf 3, wherein the lower end of the approach bridge 2 is movably connected to the pontoon 1, and the upper end of the approach bridge is movably connected to the fixed wharf 3.
Like this, set up wire rope draw gear in this pontoon, when meeting the boats and ships of different large and small tonnage and berthing, when needing to adjust the pontoon position of berthing, can control through wire rope traction approach bridge and correspond the removal, cooperate the pontoon to remove better, realize adjusting better.
Wherein, the winch 5 is arranged on the fixed stacking head at a position which is positioned at the inner side relative to the upper supporting device, one end of the steel wire rope 4 is fixed at the lower end of the approach bridge 2, the other end upwards bypasses the first fixed pulley 6 positioned near the upper supporting device and the second fixed pulley 7 positioned near the winch, and outwards bypasses the third fixed pulley 8 positioned near the winch and the fourth fixed pulley 9 positioned near the upper supporting device after being connected with the winch and is fixed with the upper end of the approach bridge.
Therefore, when the wharf needs to be moved towards the side, the winch is controlled to rotate to pull the lower end of the bridge so as to move towards the side; when the wharf boat needs to be moved towards the direction of the river center, the winch is controlled to rotate reversely to pull the upper end of the approach bridge, and reverse movement control and adjustment can be achieved. Has the advantages of convenient, reliable and stable control.
The upper end of the approach bridge 2 is movably connected with the fixed wharf 3 through an upper supporting device, the upper supporting device comprises an upper supporting seat 10, the upper end of the upper supporting seat 10 is slidably clamped and matched with the approach bridge 2, and the lower end of the upper supporting seat 10 can be horizontally and rotatably arranged and fixed on the upper surface position of the fixed wharf, which is close to the front edge.
Therefore, in the scheme, the upper end of the upper supporting seat is slidably clamped and matched with the approach bridge, the displacement caused by the floating approach bridge of the wharf along the far-near direction can be absorbed, the lower end of the upper supporting seat is horizontally matched with the fixed wharf in a rotating manner, and the approach bridge swing caused by the movement of the wharf along the water flow direction can be absorbed, so that the self-adaptive adjustment of the approach bridge can be well realized. Meanwhile, compared with the patent proposal in the background technology, because the rotary fit between the lower end of the upper supporting seat and the fixed wharf is realized, enough rotary supporting structures can be arranged to realize rotary supporting, thereby better ensuring the stability.
The upper supporting seat 10 comprises a rotating cross beam 11 arranged along the width direction of the approach bridge, the middle part of the rotating cross beam 11 is rotatably connected with a rotating support 13 fixedly arranged on the fixed wharf through an upper rotating shaft 12 arranged vertically, rotating rollers 14 are respectively arranged on the lower surfaces of two ends of the rotating cross beam 11 downwards, and the rotating rollers 14 are matched with an arc-shaped guide rail 15 which is integrally circular and fixedly arranged on the fixed wharf.
Therefore, by means of the cooperation of the rotating rollers at the two ends of the rotating cross beam and the arc-shaped guide rail, the supporting pressure is dispersed, and the stability and the reliability of the horizontal rotating support are greatly improved. When the pontoon changes, the horizontal or lifting angle of the approach bridge can be automatically adjusted, so that the smoothness of the channel on the approach bridge is ensured, the problem that the pontoon is separated from the approach bridge or the pontoon is prevented from lifting and swinging in the horizontal direction in the prior art is effectively solved, the stability of the approach bridge is ensured, and the pontoon and the approach bridge can be enabled to have the effective wind-resistant, shock-resistant and collision-resistant capabilities, and the safety and the reliability are realized.
Wherein, the lower surfaces of the two ends of the rotating cross beam 11 are respectively provided with a pair of rotating rollers 14 downwards.
This can further disperse the supporting pressure and improve the stability.
The upper surfaces of the two ends of the rotating cross beam 11 are respectively provided with an upward sliding roller 16, the two ends of the sliding roller 16 are upward provided with limit stops 17, the two sides of the approach bridge 2 are downwards provided with sliding guide rails 18 in a protruding mode, and the sliding guide rails are matched with the sliding rollers 16 and limited in the limit stops 17.
Therefore, the up-and-down sliding fit of the approach bridge along the upper supporting seat can be realized more smoothly, and the up-and-down movement stability of the approach bridge is ensured.
Wherein the upper end of the sliding guide 18 has a limit stop 19 protruding downward.
Therefore, the upper end of the approach bridge can be well prevented from sliding out of the upper supporting seat, and stability and safety are well ensured.
Wherein, the lower extreme both sides of approach bridge 2 are provided with down support gyro wheel 20 respectively, still upwards protruding on the wharf boat 1 is provided with and keeps off the seat 21, keeps off the seat 21 and is located the fore-and-aft direction and two outside directions of lower support gyro wheel and realizes spacing.
Therefore, the lower end of the approach bridge is directly simply supported on the pontoon, the movable connection between the lower end of the approach bridge and the pontoon can be better realized, and when the pontoon shifts, the lower support roller can roll in the range limited by the supporting seat, so that the approach bridge is prevented from slipping and the floatability of the approach bridge is ensured.
Wherein, the pontoon 1 is positioned outside the retaining seat and is fixedly provided with an anchor chain 22 fixedly connected with the lower end of the approach bridge 2.
Thus, the stability of the connection between the approach bridge and the pontoon is further ensured, and the approach bridge is prevented from being separated from the pontoon.
The upper end part of the approach bridge 2 is also rotatably connected with an upper access board 24, and the lower end part is also rotatably connected with a lower access board 25. Therefore, the goods can be more conveniently guided up and down.
Wherein the upper access panel 24 comprises a double or multi-layered access panel in a pull-out arrangement. The length of the upper access board is conveniently adjusted, so that the length of the upper access board is correspondingly adjusted when the bridge approach position is adjusted, and the upper surface lap joint of the wharf is conveniently and fixedly connected.
Wherein, the fixed wharf is provided with a downward step 26 near the river side, and the upper supporting device is installed on the step 26.
Therefore, the upper end of the approach bridge is more conveniently overlapped with the upper surface of the fixed wharf through the upper butt strap.
Wherein, the approach bridge 2 is made of steel structure materials. The strength is better ensured.
The scheme has the following advantages and effects: when the water level rises or falls, the swing angle of the pontoon and the steel bridge approach can be changed, so that unpowered automatic adjustment of the angle of the steel bridge approach is realized, the connection stability between the steel bridge approach and the pontoon and between the steel bridge approach and the wharf is ensured, and the problems that the self weight of the steel bridge approach in the existing pontoon is too large, the adjustment is difficult, the pontoon needs to frequently move, and the like are solved. When the steel bridge approach occupies a main channel at a medium-high water level, the steel bridge approach can be telescopic or piled up in a rear land area when navigation safety hidden trouble exists or overhaul is needed. The device does not need heavy physical labor, is not only suitable for liquid cargo pipeline transportation and dry bulk cargo belt conveyor transportation, but also can be used for passenger terminals by additionally arranging adjustable gradient steps on a steel approach bridge. Novel in design, convenient in adjustment, time-saving, labor-saving, safe and reliable.
Claims (10)
1. The utility model provides a self-adaptation formula freight transportation pontoon, includes pontoon, approach bridge and fixed wharf, and approach bridge lower extreme swing joint is on the pontoon, and upper end swing joint is on fixed sign indicating number head, its characterized in that still is provided with draw gear, and draw gear includes wire rope and winch, and the approach bridge passes through wire rope and is located the winch on the fixed sign indicating number head and links to each other.
2. The adaptive freight pontoon according to claim 1, wherein the winch is mounted on the fixed quay at an inboard position, one end of the wire rope is fixed to the lower end of the bridge, and the other end of the wire rope is passed upwardly around the first fixed sheave located on the outer side of the fixed quay, the second fixed sheave located near the winch, and is passed outwardly around the third fixed sheave located near the winch and the fourth fixed sheave located near the outer side of the fixed quay after the winch is connected to the upper end of the bridge.
3. The adaptive freight pontoon according to claim 1, wherein the upper end of the access bridge is movably connected to the fixed pontoon via an upper support means, the upper support means comprising an upper support base, the upper end of the upper support base being slidably snap-fitted to the access bridge, the lower end of the upper support base being horizontally rotatably mounted and fixed to the upper surface of the fixed pontoon adjacent the front edge.
4. The adaptive freight floating terminal according to claim 3, wherein the upper support comprises a rotating cross beam arranged along the width direction of the approach bridge, the middle part of the rotating cross beam is rotatably connected with a rotating support fixedly arranged on the fixed terminal through an upper rotating shaft arranged vertically, the lower surfaces of two ends of the rotating cross beam are respectively provided with a rotating roller downwards, and the rotating rollers are matched with an arc-shaped guide rail which is integrally circular and fixedly arranged on the fixed terminal.
5. The adaptive freight pontoon according to claim 4, wherein the lower surfaces of the two ends of the pivoting cross member are each provided with a pair of pivoting rollers.
6. The adaptive freight pontoon according to claim 4, wherein the upper surfaces of the two ends of the rotating cross beam are respectively provided with upward sliding rollers, the two ends of the sliding rollers are provided with limit stops upward, the two sides of the approach bridge are provided with downward protrusions with sliding guide rails, and the sliding guide rails are matched with the sliding rollers and limited in the limit stops;
the fixed wharf is provided with a downward step on one side close to the river channel, and the upper supporting device is arranged on the step.
7. The adaptive freight terminal as defined in claim 6, wherein the upper end of the slide rail has a downwardly projecting bump stop.
8. The adaptive freight pontoon according to claim 1, wherein lower support rollers are downwardly disposed on both sides of the lower end of the access bridge, and support seats are upwardly protruded on the pontoon, and the support seats are disposed in front and rear directions and in both outer directions of the lower support rollers and realize the limitation.
9. The adaptive freight pontoon according to claim 1, wherein the pontoon is further fixedly provided with an anchor chain at the outer side of the abutment and fixedly connected to the lower end of the bridge deck.
10. The adaptive freight pontoon according to claim 1, wherein the upper end portion of the approach bridge is further rotatably connected to an upper access panel, and the lower end portion is further rotatably connected to a lower access panel;
the upper butt strap comprises a double-layer or multi-layer butt strap which is arranged in a drawing mode;
the approach bridge is made of steel structure materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322409120.4U CN220789597U (en) | 2023-09-06 | 2023-09-06 | Self-adaptive freight transportation pontoon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322409120.4U CN220789597U (en) | 2023-09-06 | 2023-09-06 | Self-adaptive freight transportation pontoon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220789597U true CN220789597U (en) | 2024-04-16 |
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ID=90658658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322409120.4U Active CN220789597U (en) | 2023-09-06 | 2023-09-06 | Self-adaptive freight transportation pontoon |
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| Country | Link |
|---|---|
| CN (1) | CN220789597U (en) |
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2023
- 2023-09-06 CN CN202322409120.4U patent/CN220789597U/en active Active
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