CN116427215A - Rail structure for sightseeing train - Google Patents
Rail structure for sightseeing train Download PDFInfo
- Publication number
- CN116427215A CN116427215A CN202310399265.2A CN202310399265A CN116427215A CN 116427215 A CN116427215 A CN 116427215A CN 202310399265 A CN202310399265 A CN 202310399265A CN 116427215 A CN116427215 A CN 116427215A
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- Prior art keywords
- curve
- rotating plate
- connecting portion
- track
- unit
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- 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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- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 2
- 241001669679 Eleotris Species 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B23/00—Easily dismountable or movable tracks, e.g. temporary railways; Details specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B11/00—Rail joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to the field of amusement equipment, in particular to a track structure for a sightseeing small train, which comprises a track, wherein the track is provided with a curve structure, the curve structure is divided into a plurality of curve units, connecting pieces are arranged between adjacent curve units, two ends of each connecting piece are respectively hinged with the curve units along the vertical direction, the bottom of each curve unit is provided with a cushion block, a rotating plate is arranged on each cushion block, an inner rail and an outer rail of each curve unit are connected with the rotating plate, the end part, close to the inner rail, of each rotating plate is hinged with the cushion block along the vertical direction, and a lifting device is arranged in each cushion block and used for lifting one end, close to the outer rail, of each curve unit: when the small train runs at a higher speed, the lifting device is used, so that the outer rail of the curve structure is higher than the inner rail of the small train, an inclined slope exists in the curve structure, the curve structure with an inclined angle can help the small train overcome the centrifugal force during turning, and the small train cannot derail when running at a smaller curve at a higher speed.
Description
Technical Field
The invention relates to the field of amusement equipment, in particular to a track structure for sightseeing small trains.
Background
The sightseeing train is mainly used for scenic spots, parks, vacation areas and the like as the name implies, and is different from common trains, high-speed rails and the like, and the sightseeing train belongs to special equipment and only allows to run in factories (fields). The sightseeing train comprises three kinds of rail trains, trolley trains and monorail overhead trains. Rail is laid along both sides of mountain in scenic spot by rail small train, and the rail is matched with train wheel to run, belonging to standard sightseeing train type.
In order to meet the playing requirement and improve the playing experience, the track of the small rail train is designed to be serpentine according to the characteristics of landscapes, so that more curves generally exist in the track. Once installed, the curve is generally not changeable, and the small train can only travel under the condition of being lower than the highest speed limit, and when the speed of the small train exceeds the highest speed limit, the small train is easy to derail to cause accidents.
In the prior art, the turning radius of the track is designed to be relatively large, so that a small train can pass through at a relatively high speed. However, the small rail train can be used only in specific places such as scenic spots, parks and vacation areas according to regulations, the areas of the places are limited, the usable areas of certain places are smaller, and if the turning radius of the rail is too large under the condition, on one hand, the occupied area is larger, the adverse effect on the design of the scenery is caused, and on the other hand, the route design of the small rail train is limited more, so that the playing experience is poor.
Therefore, how to make the small train bend stably at different speeds is a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a track structure for sightseeing small trains, which enables the small trains to stably bend at different speeds on the premise of ensuring the speed and stability.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a track structure for sightseeing little train, including the track, the track has the bend structure, the bend structure is cut apart into a plurality of bend units, be provided with the connecting piece between the adjacent bend unit, the both ends of connecting piece are articulated along vertical direction with the bend unit respectively, the connecting piece includes first connecting portion, the second connecting portion, the third connecting portion, first connecting portion and the scalable setting of second connecting portion, the second connecting portion are articulated along the horizontal direction with the third connecting portion, the bottom of each bend unit all is provided with the cushion, be provided with the dwang on the cushion, the interior rail and the exterior rail of bend unit all are connected with the dwang, the tip that the dwang is close to the interior rail is articulated along vertical direction and cushion, be provided with lifting device in the cushion for the one end that the lifting dwang is close to the exterior rail of bend unit.
By adopting the technical scheme, one end of the rotating plate is lifted by using the lifting device, and then the outer rail of the curve unit is lifted, so that the outer rail of the curve structure is higher than the inner rail of the curve unit, an inclined slope exists in the curve structure, the curve structure with an inclined angle can help a small train overcome the centrifugal force during turning, and the small train cannot derail when running at a smaller curve at a higher speed; when the small train runs at a lower speed, the lifting device is used for keeping the rotating plate horizontal, the curve structure is in a horizontal state, and the small train can be kept stable when running at a low speed; through setting up the connecting piece, when each bend unit lifts, the connecting piece can extend, crooked, makes up the clearance that forms after the lifting between each bend unit, makes little train operation smooth and easy.
Preferably, the first connecting portion is downwards penetrated along the top of the first connecting portion and is provided with a through groove, the through groove is opened towards the second connecting portion, two side walls of the through groove are penetrated along the length direction of the through groove and are provided with sliding holes, one end of the second connecting portion, which is towards the through groove, of the second connecting portion is provided with a sliding rod, the end part of the sliding rod extends into the through groove, two sides of the sliding rod are respectively connected with sliding blocks, and the sliding blocks respectively extend into the sliding holes.
By adopting the technical scheme, the sliding of the sliding block in the sliding hole is utilized, so that the first connecting part and the second connecting part can relatively move, and the telescopic design of the first connecting part and the second connecting part is realized.
Preferably, the lifting device comprises a driving unit and a transmission mechanism, the transmission mechanism comprises a driving block moving along the horizontal direction, an inclined driving rod is hinged to the driving block, one end of the driving rod, away from the driving block, is hinged to the bottom of the rotating plate, and the hinged position of the driving rod and the rotating plate is located below an outer rail of the curve unit.
Through adopting above-mentioned technical scheme, utilize drive unit to make the drive block remove, the emergence rotation of drive lever in the drive block removal process, the in-process that the drive lever rotated to vertical state by incline state, the one end of top movable rotating plate risees, makes the rotating plate reach the state of slope, and then makes the outer fringe of bend unit rise, bend structure inwards inclines.
Preferably, the driving unit comprises a motor, a screw is connected to the power output end of the motor, the driving block is connected to the screw in a threaded mode, guide rods parallel to the screw are fixedly arranged on two sides of the screw, and the guide rods are connected with the driving block in a sliding mode.
Through adopting above-mentioned technical scheme, the rotation of guide bar restriction drive piece makes the drive piece only can translate along the length direction of guide bar, and the motor rotates and drives the screw rod and rotate, makes the drive piece translate along screw rod length direction through screw-thread fit.
Preferably, the surface of the cushion block is provided with a mounting groove, the rotating plate is covered above the mounting groove, and the driving unit and the transmission structure are positioned in the mounting groove.
Through adopting above-mentioned technical scheme, lifting device is located the mounting groove, and the pivoted plate is located the top of mounting groove and seals the mounting groove, plays the guard action to the inside lifting device of mounting groove.
Preferably, the rail is provided with a sleeper at the bottom thereof, and the curve unit is connected with the sleeper therebelow in a non-fixed manner.
By adopting the technical scheme, the curve structure is in a horizontal state when the small train passes through the curve at a lower speed, the track at the curve is placed on the sleeper, and the lifting device inclines the curve structure when the small train passes through the curve at a higher speed, so that the track at the curve leaves the sleeper.
Preferably, the velocimeter is arranged on the side surface of the track and used for detecting the speed of the train when the train enters the curve;
and the controller is respectively and electrically connected with the velocimeter and the motor, and is used for controlling the motor to rotate forward to lift the rotating plate when the vehicle speed measured by the velocimeter is higher than a preset value, or controlling the motor to rotate reversely to keep the rotating plate in a lowered state.
Through adopting above-mentioned technical scheme, utilize the speed at every moment of speed meter monitoring train, when the speed meter measured the speed of a motor is higher than the default, then control motor corotation lifts up the pivoted panel, otherwise make the pivoted panel keep the state of lowering, make the bend structure can be according to the speed of a motor at every moment automatically regulated inclination of train, therefore it is more convenient to use.
In summary, the invention has the following beneficial effects: when the small train runs at a lower speed, the lifting device is used for keeping the rotating plate horizontal, the curve structure is in a horizontal state, and the small train can be kept stable when running at a low speed; when the small train runs at a higher speed, one end of the rotating plate is lifted by using the lifting device, and then the outer rail of the curve unit is lifted, so that the outer rail of the curve structure is higher than the inner rail of the curve unit, an inclined slope exists in the curve structure, the curve structure with an inclined angle can help the small train overcome the centrifugal force during turning, and the small train cannot derail when running at a smaller curve at a higher speed.
Drawings
FIG. 1 is a schematic view of the structure of a track in an embodiment;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a side view of the connector;
FIG. 4 is an enlarged schematic view of portion B of FIG. 1;
FIG. 5 is a top view of the mounting slot;
fig. 6 is a cross-sectional view of the mounting groove.
In the figure, 1, a track; 11. a curve unit; 12. a sleeper; 2. a connecting piece; 21. a first connection portion; 22. a through groove; 23. a slide hole; 24. a slide bar; 25. a slide block; 26. a second connecting portion; 27. a third connecting portion; 3. a cushion block; 31. a rotating plate; 32. a mounting groove; 4. a motor; 41. a screw; 42. a guide rod; 5. a driving block; 51. a driving rod; 6. a velocimeter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Examples: a track structure for sightseeing small trains, as shown in fig. 1, a track 1 is laid on the surface of a sleeper 12. There is a curve structure on the laid track 1, the small train travelling in the direction of the arrow. The velocimeter 6 is installed on the inner side of the curve structure, and the velocimeter 6 faces the direction of the entrance curve of the train. The track 1 has a curve structure which is divided into a number of curve units 11 with a broken line as a boundary, the curve structure in the present embodiment being divided into three curve units 11. A connecting piece 2 is connected between the adjacent curve units 11, specifically an inner rail is connected with the inner rail, and an outer rail is connected with the outer rail. The rail 1 at the curve unit 11 is placed on the sleeper 12, and the rest of the rail 1 is fixedly connected with the sleeper 12. The lower part of the curve unit 11 is also provided with cushion blocks 3, two cushion blocks 3 are symmetrically arranged below the curve unit 11 positioned in the middle, and one cushion block 3 is respectively arranged below the other two curve units 11.
As shown in fig. 2 and 3, both ends of the link 2 are hinged to the curve units 11 adjacent thereto, respectively, in a vertical direction, so that the curve units 11 and the link 2 are rotated along a vertical plane when rotated. The connector 2 comprises a first connection portion 21, a second connection portion 26 and a third connection portion 27. The first connecting portion 21 is downwards penetrated and is provided with a through groove 22 along the top of the first connecting portion, the through groove 22 is opened towards the second connecting portion 26, two side walls of the through groove 22 are penetrated and provided with sliding holes 23 along the length direction of the through groove, one end of the second connecting portion 26 towards the through groove 22 is provided with a sliding rod 24, the end part of the sliding rod 24 extends into the through groove 22, two sides of the end part of the sliding rod 24 are respectively connected with sliding blocks 25, and the sliding blocks 25 respectively extend into the sliding holes 23. The second connecting part 26 is hinged with the third connecting part 27 along the horizontal direction, so that the second connecting part and the third connecting part rotate along the same horizontal plane when rotating.
As shown in fig. 4-6, a cushion block 3 is arranged below the track 1 of each curve unit 11, a rotating plate 31 is arranged on the surface of the cushion block 3, and an inner rail and an outer rail of each curve unit 11 are fixedly connected with the rotating plate 31. One end of the rotating plate 31, which is close to the bending center, is hinged with the cushion block 3 along the vertical direction, so that the rotating plate 31 can rotate along the vertical plane. The surface of the cushion block 3 is provided with a mounting groove 32 below the rotating plate 31, so that the rotating plate 31 covers the opening of the mounting groove 32. The mounting groove 32 is provided therein with a lifting device for driving the rotation plate 31 to rotate. The lifting device comprises a driving unit and a transmission mechanism. The drive unit includes a motor 4 horizontally mounted in a mounting slot 32. The power output end of the motor 4 is connected with a horizontal screw 41. Guide rods 42 are fixedly installed on two sides of the screw 41 in parallel. The transmission mechanism comprises a driving block 5 and a driving rod 51. The driving block 5 is screwed to the screw 41. The guide rod 42 passes through the driving block 5, and the driving block 5 is slidably connected with the guide rod 42. The top of the drive block 5 is hinged to a drive rod 51, and the end of the drive rod 51 remote from the drive block 5 is hinged to the bottom of the rotating plate 31. The hinge of the driving lever 51 with the turning plate 31 is located below the outer rail of the curve unit 11. When the rotating plate 31 is lowered, the driving lever 51 is in an inclined state.
A controller is simultaneously installed in the velocimeter 6, and the controller is respectively and electrically connected with the velocimeter 6 and the motor 4. When the speed of the vehicle measured by the velocimeter 6 is higher than a preset value, the motor 4 is controlled to rotate forward to lift the rotating plate 31, otherwise, the rotating plate 31 is kept in a lowered state.
The using method comprises the following steps: the small trains used in this example have 5 knots, each knot carries 24 passengers at most, the turning radius of the track 1 is 15m, and the track gauge is 60mm. When traveling at a low speed, the vehicle speed is lower than 10km/h, and the rotating plate 31 is not required to rotate.
The train is bent in the direction indicated by the arrow in fig. 1, and the speed meter 6 monitors the bending speed of the train. When the bending speed of the small train reaches or exceeds 10km/h, the controller controls the motor 4 to operate, so that the screw 41 rotates, the driving block 5 is pushed to move in a direction away from the motor 4, and the driving rod 51 rotates. The posture of the driving lever 51 gradually changes from the inclined state to the vertical state, and therefore the rotating plate 31 at the top thereof can be lifted up, so that the end of the rotating plate 31 is lifted up, and the outside of the curve unit 11 is lifted up. During the process that the plurality of curve units 11 are lifted, the connecting piece 2 between the curve units 11 bends and stretches, so that the curve units 11 keep continuous.
Claims (7)
1. The utility model provides a track structure for sightseeing little train, including track (1), track (1) have the curve structure, a serial communication port, the curve structure is cut apart into a plurality of curve units (11), be provided with connecting piece (2) between adjacent curve unit (11), the both ends of connecting piece (2) are articulated along vertical direction with curve unit (11) respectively, connecting piece (2) include first connecting portion (21), second connecting portion (26), third connecting portion (27), first connecting portion (21) and second connecting portion (26) scalable setting, second connecting portion (26) are articulated along the horizontal direction with third connecting portion (27), the bottom of every curve unit (11) all is provided with cushion (3), be provided with rotating plate (31) on cushion (3), the interior rail and the exterior rail of curve unit (11) all are connected with rotating plate (31), the tip that rotating plate (31) are close to interior rail is articulated along vertical direction and cushion (3), be provided with the device in cushion (3) for rotating plate (31) are close to the lifting one end of the rail of curve unit (11).
2. The track structure for sightseeing train according to claim 1, characterized in that the first connecting portion (21) is provided with a through groove (22) penetrating downwards along the top thereof, the through groove (22) is opened towards the second connecting portion (26), two side walls of the through groove (22) are provided with sliding holes (23) penetrating downwards along the length direction thereof, one end of the second connecting portion (26) towards the through groove (22) is provided with a sliding rod (24), the end part of the sliding rod (24) extends into the through groove (22), two sides of the sliding rod (24) are respectively connected with sliding blocks (25), and the sliding blocks (25) respectively extend into the sliding holes (23).
3. A track structure for sightseeing small trains according to claim 1, characterized in that the lifting means comprises a drive unit and a transmission mechanism, the transmission mechanism comprises a drive block (5) moving in the horizontal direction, the drive block (5) is hinged with a tilting drive rod (51), one end of the drive rod (51) far away from the drive block (5) is hinged with the bottom of the rotating plate (31), and the hinge of the drive rod (51) and the rotating plate (31) is located below the outer rail of the curve unit (11).
4. A track structure for sightseeing minibus according to claim 3, characterized in that the driving unit comprises a motor (4), the power output end of the motor (4) is connected with a screw (41), the driving block (5) is connected with the screw (41) in a threaded manner, the two sides of the screw (41) are fixedly provided with guide rods (42) parallel to the screw, and the guide rods (42) are in sliding connection with the driving block (5).
5. A track structure for sightseeing small trains according to claim 3, characterized in that the surface of the pad (3) is provided with a mounting groove (32), the rotating plate (31) is covered over the mounting groove (32), and the driving unit and the transmission structure are located in the mounting groove (32).
6. A track structure for sightseeing small trains according to claim 1 characterized in that the bottom of the track (1) is provided with sleepers (12) and the curve units (11) are connected with the sleepers (12) below it in a non-fixed form.
7. The track structure for sightseeing small trains according to claim 4, further comprising:
the velocimeter (6) is arranged on the side face of the track (1) and is used for detecting the speed of the train when the train enters the curve;
and the controller is respectively and electrically connected with the velocimeter (6) and the motor (4), when the speed of the vehicle measured by the velocimeter (6) is higher than a preset value, the motor (4) is controlled to rotate positively to lift the rotating plate (31), otherwise, the motor (4) is controlled to rotate reversely to keep the rotating plate (31) in a lowered state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310399265.2A CN116427215A (en) | 2023-04-13 | 2023-04-13 | Rail structure for sightseeing train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310399265.2A CN116427215A (en) | 2023-04-13 | 2023-04-13 | Rail structure for sightseeing train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116427215A true CN116427215A (en) | 2023-07-14 |
Family
ID=87085033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310399265.2A Pending CN116427215A (en) | 2023-04-13 | 2023-04-13 | Rail structure for sightseeing train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116427215A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156500A (en) * | 1995-12-08 | 1997-06-17 | Toutetsu Kogyo Kk | Rack type rail road transportation device and track construction method using it |
| CN107558310A (en) * | 2017-10-23 | 2018-01-09 | 王智勇 | Can in dynamic regulation outer rail difference in height bend wheel track |
| CN110835868A (en) * | 2019-12-02 | 2020-02-25 | 江山根咯科技有限公司 | Material transfer trolley for railway construction site |
| CN214143073U (en) * | 2020-12-08 | 2021-09-07 | 内蒙古伊泰煤炭股份有限公司 | Turning device for rail mobile train |
| CN214130271U (en) * | 2021-01-11 | 2021-09-07 | 芜湖新升机械有限公司 | Amusement track train steering mechanism applied to circular arc |
| CN215015775U (en) * | 2021-07-09 | 2021-12-07 | 衡阳华兴日上广告有限公司 | Liftable showcase |
| CN216864680U (en) * | 2022-02-22 | 2022-07-01 | 南京北路智控科技股份有限公司 | Track mechanism for inspection device |
-
2023
- 2023-04-13 CN CN202310399265.2A patent/CN116427215A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156500A (en) * | 1995-12-08 | 1997-06-17 | Toutetsu Kogyo Kk | Rack type rail road transportation device and track construction method using it |
| CN107558310A (en) * | 2017-10-23 | 2018-01-09 | 王智勇 | Can in dynamic regulation outer rail difference in height bend wheel track |
| CN110835868A (en) * | 2019-12-02 | 2020-02-25 | 江山根咯科技有限公司 | Material transfer trolley for railway construction site |
| CN214143073U (en) * | 2020-12-08 | 2021-09-07 | 内蒙古伊泰煤炭股份有限公司 | Turning device for rail mobile train |
| CN214130271U (en) * | 2021-01-11 | 2021-09-07 | 芜湖新升机械有限公司 | Amusement track train steering mechanism applied to circular arc |
| CN215015775U (en) * | 2021-07-09 | 2021-12-07 | 衡阳华兴日上广告有限公司 | Liftable showcase |
| CN216864680U (en) * | 2022-02-22 | 2022-07-01 | 南京北路智控科技股份有限公司 | Track mechanism for inspection device |
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