CN113309934B - Tunnel machine - Google Patents
Tunnel machine Download PDFInfo
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- CN113309934B CN113309934B CN202110511705.XA CN202110511705A CN113309934B CN 113309934 B CN113309934 B CN 113309934B CN 202110511705 A CN202110511705 A CN 202110511705A CN 113309934 B CN113309934 B CN 113309934B
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- buffer
- tunnel
- machine
- limiting
- groove
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M3/00—Portable or wheeled frames or beds, e.g. for emergency power-supply aggregates, compressor sets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
Abstract
An embodiment of the present invention provides a tunnel boring machine, including: a tunnel machine cabin body; the buffer part is arranged at the tunnel machine cabin; the walking part is connected to one side, far away from the tunnel machine cabin, of the buffer part; the walking part can slide up and down relative to the tunnel cabin body by arranging the buffer part. The invention solves the technical problems that when the tunnel machine runs at the splicing position of the guide rails, the walking part drives the cabin body of the tunnel machine to vibrate, so that the internal parts of the tunnel machine are dislocated and the monitoring picture of the tunnel machine is blurred, and achieves the technical effect of shock absorption.
Description
Technical Field
The invention relates to the field of tunnel monitoring, in particular to a tunnel machine.
Background
In recent years, along with the continuous development of urban construction, the scale of cities is continuously enlarged, and the traffic pressure is continuously increased, in urban municipal engineering projects, the number and the scale of urban traffic tunnels and high-speed traffic tunnels are continuously increased, and the tunnel operation safety is increasingly paid attention to. Illegal lane changing, overspeed, low speed, frequent occurrence of phenomena such as random garbage throwing and the like in the tunnel, and traffic accidents caused by the problems of wall surface water seepage and the like in the tunnel, so that the tunnel needs to be regularly patrolled and examined. In the conventional tunnel inspection, guide rails are generally laid on the side walls of a tunnel, and a tunnel machine travels back and forth on the guide rails to monitor the vehicle traveling condition in the tunnel.
However, when splicing the guide rails of the tunnel boring machine, due to the problem of the laying environment of the guide rails, the phenomenon that two adjacent guide rails are not aligned and the splicing positions of the guide rails are staggered up and down to have a horizontal height difference exists. When the tunnel machine runs to the splicing position of the guide rails, severe vibration is generated due to the problem of the splicing position of the rails, so that the internal parts of the tunnel machine are staggered, the monitoring picture of the tunnel machine is fuzzy, and the normal operation of the tunnel machine is influenced.
Disclosure of Invention
To solve the above problems, the present invention provides a tunnel tunneling machine, for example, comprising: a tunnel machine cabin body; the buffer part is arranged between the tunnel machine cabin body and the walking part; the walking part is connected to one side, far away from the cabin body of the tunnel machine, of the buffer part; the walking part can slide up and down relative to the cabin body of the tunnel machine by arranging the buffer part.
The technical effect achieved after the technical scheme is adopted is as follows: through the tunnel machine cabin body with set up buffering portion between the walking portion, make tunnel machine is when the department of splicing through the track, the walking portion can be relative the cabin body slides from top to bottom, thereby avoids walking portion department drives the tunnel machine cabin body shakes together, and then has played the absorbing effect of buffering.
In this embodiment, the buffer portion includes: the buffer portion includes: the buffer mounting component is fixedly connected with the cabin body of the tunnel machine; the buffer mounting plate is matched with the buffer mounting piece and can slide up and down relative to the buffer mounting piece.
The technical effect achieved after the technical scheme is adopted is as follows: through the buffering installed part with slide from top to bottom between the buffering mounting panel realizes the tunnel cabin body with the relative slip of walking portion, and then make as the walking portion process during track concatenation department, rocking from top to bottom that walking portion produced only can drive the buffering mounting panel is relative the buffering installed part slides from top to bottom, and then will rocking from top to bottom of walking portion has offset through relative slip between the two, thereby has reduced rocking of the tunnel cabin body has played the absorbing effect of buffering.
In this embodiment, at least two buffer mounting pieces are arranged and are arranged oppositely, and a sliding groove is arranged on one side of each buffer mounting piece, which is close to the buffer mounting plate; an extension plate is arranged on one side, close to the buffering mounting piece, of the buffering mounting plate; wherein, the buffering mounting panel passes through it stretches into to stretch out the board the spout, just the buffering mounting panel sets up at least two between the buffering installed part, the buffering mounting panel passes through it can be relative to stretch out the board the spout slides from top to bottom.
The technical effect achieved after the technical scheme is adopted is as follows: through set up the spout on the buffering installed part set up the board that stretches out on the buffering mounting panel, on the one hand, can pass through the board that stretches out moves the buffering mounting panel is in slide from top to bottom in the spout, and then realize the buffering mounting panel with the upper and lower slip of buffering installed part. On the other hand, the sliding groove can limit and guide the extending plate, so that the extending plate can only slide up and down in a vertical range along the length direction of the sliding groove without moving in other directions, and the running stability of the tunnel machine is further improved.
In this embodiment, the length of spout is less than or equal to the length of stretching out the board, just the spout is the logical groove that upper and lower both ends were opened.
The technical effect achieved after the technical scheme is adopted is as follows: by setting the length of the sliding groove to be less than or equal to that of the extending plate, on one hand, preparation materials of the buffer mounting piece can be reduced, so that the manufacturing cost is reduced, and the overall economy of the tunnel machine is improved; on the other hand, can reduce stretch out the board with area of contact between the spout, and then reduced stretch out the board with frictional force between the two when the spout relative slip to avoid the frictional force between the two too big condition that causes the shock attenuation effect not good to appear. Will the spout sets up to the logical groove that both ends were opened up from top to bottom, can avoid stretch out the board at gliding in-process from top to bottom with the upper and lower lateral wall of spout collides mutually, has eliminated stretch out the board with the impact force of lateral wall about the spout, has improved the effect of shock attenuation buffering.
In this embodiment, the buffer portion further includes: the limiting groove is formed in the buffer mounting plate and is positioned on one side close to the buffer mounting piece; the first limiting part penetrates through the limiting groove and is fixedly connected with the tunnel machine cabin body; the length of the limiting groove is greater than the width of the first limiting piece. The extending direction of the limiting groove is the same as the extending direction of the sliding groove, and the extending length of the limiting groove is smaller than or equal to the extending length of the sliding groove.
The technical effect achieved after the technical scheme is adopted is as follows: on one hand, the relative movement of the buffer mounting plate and the buffer mounting piece can be further limited, so that the buffer mounting plate and the buffer mounting piece can only relatively slide in a smaller length range; on the other hand, the spacing groove can avoid the buffering mounting panel with rock about appearing between the buffering installed part.
In this embodiment, the buffer portion further includes: one end of the second limiting plate is connected with the first limiting piece, and the other end of the second limiting plate is fixedly connected with the buffering mounting piece; the second limiting plate is perpendicular to the extending direction of the first limiting member.
The technical effect achieved after the technical scheme is adopted is as follows: by arranging the second limiting plate in the direction perpendicular to the extending direction of the first limiting plate, the buffer mounting plate can be prevented from moving towards the direction away from the body of the tunnel machine, so that the buffer mounting plate is separated from the buffer mounting part and the tunnel machine rolls over; on the other hand, the second limiting plate penetrates through the buffer mounting piece to be connected with the tunnel cabin body, and therefore the connection strength between the buffer mounting piece and the tunnel cabin body can be improved.
In this embodiment, the walking part includes: the driving motor is arranged on one side, close to the tunnel machine cabin, of the buffer mounting plate; the walking wheel is arranged on one side of the buffer mounting plate, which is far away from the cabin body of the tunnel machine, and is in driving connection with the driving motor; at least one auxiliary wheel is arranged on one side of the travelling wheel.
The technical effect achieved after the technical scheme is adopted is as follows: the driving motor can adjust the traveling direction and the traveling speed of the traveling wheels, the auxiliary wheels can increase the contact area of the traveling part and the guide rail, and further the traveling stability of the tunnel machine is improved.
In this embodiment, the driving motor includes a motor body and a driving shaft, the tunnel cabin body is provided with a motor mounting groove, and the motor body is arranged in the motor mounting groove; the depth of the motor mounting groove is larger than the height of the motor body.
The technical effect achieved after the technical scheme is adopted is as follows: when the buffer mounting plate drives the motor to move up and down, the motor body can move up and down in the motor mounting groove. Because the height of the motor body is smaller than the depth of the motor mounting groove, the movement of the motor body cannot influence the cabin body of the tunnel machine.
In this embodiment, the tunnel boring machine further includes: and the buffer piece is arranged below the buffer mounting plate.
The technical effect achieved after the technical scheme is adopted is as follows: the buffer piece can reduce the impact of the walking part on the tunnel machine cabin body, and the stable operation of the tunnel machine is ensured.
In summary, the above embodiments of the present application may have one or more of the following advantages or benefits: through the tunnel machine cabin body with set up buffering portion between the walking portion, make the tunnel machine is when passing through track concatenation department, the walking portion can be relative the cabin body slides from top to bottom, thereby avoids walking portion department drives the tunnel machine cabin body shakes together, and then has played the absorbing effect of buffering.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a tunnel boring machine 100 according to an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of the bumper mount 21 of fig. 1.
Fig. 3 is a schematic structural view of the buffering mounting plate 22 in fig. 1.
Fig. 4 is a schematic view of the connection between the cushioning portion 20 and the traveling portion 30.
Fig. 5 is a schematic structural view of the buffer mounting plate 22 from another perspective.
Fig. 6 is a schematic structural view of the cabin 10 of the tunnel boring machine of fig. 1.
Description of the main element symbols:
100-tunnel machine; 10-a tunnel machine cabin body; 20-a buffer; 21-a cushioning mount; 211-a chute; 22-a buffer mounting plate; 221-a protruding plate; 222-a limit groove; 23-a first stop; 24-a second stop; 30-a walking part; 31-a drive motor; 311-a motor body; 312-a drive shaft; 32-road wheels; 33-auxiliary wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic structural diagram of a tunnel boring machine 100 according to an embodiment of the present invention is shown. The tunnel machine 100 includes, for example: the tunnel machine cabin 10, the buffer part 20 and the traveling part 30. The buffer part 20 is disposed on the tunnel cabin 10, and the walking part 30 is disposed on a side of the buffer part 20 away from the tunnel cabin 10. The walking part 30 can slide up and down relative to the tunnel machine cabin 10 through the buffer part 20.
Further, the buffer portion 20 includes, for example: a bumper mount 21 and a bumper mounting plate 22. The buffer mounting piece 21 is fixedly connected to the tunnel machine cabin 10, and the walking part 30 is fixedly arranged on the buffer mounting plate 22. The buffer mounting plate 22 is installed in cooperation with the buffer mounting member 21, and the buffer mounting plate 22 can slide up and down relative to the buffer mounting member 21. For example, the buffer mounting member 21 is provided with a slide rail in the vertical direction, the buffer mounting plate 22 is provided with a sliding member which is installed in cooperation with the slide rail, and the buffer mounting plate 22 can slide up and down relative to the buffer mounting member 21 through the sliding member. Of course, the sliding member may be disposed on the buffer mounting member 21, and the sliding rail may be disposed on the buffer mounting plate 22, which is not limited herein.
Referring to fig. 2 and 3, the buffer part 20 is provided with at least two buffer mounting members 21, and a sliding groove 211 is formed on one side of each buffer mounting member 21 close to the buffer mounting plate 22. Correspondingly, a protruding plate 221 is arranged on one side of the buffer mounting plate 22 close to the buffer mounting part 21. Specifically, at least two buffer mounting pieces 21 are arranged on two sides of the tunnel machine cabin 10, the buffer mounting plate 22 is arranged between the at least two buffer mounting pieces 21, and the buffer mounting plate 22 can slide up and down relative to the sliding groove 211 through the extension plate 221, so that the walking part 30 can slide up and down relative to the tunnel machine cabin 10 through the buffer mounting plate 22. Each protruding plate 221 may be connected to one buffer mounting member 21, or may be connected to a plurality of buffer mounting members 21. Specifically, the plurality of cushion attachment members 21 are arranged at equal intervals in the extending direction of the extension plate 221.
In one embodiment, referring to fig. 4, the buffer portion 20 is provided with two buffer mounting members 21, the two buffer mounting members 21 are oppositely disposed at two sides of the buffer mounting plate 22, the buffer mounting plate 22 is sandwiched between the two buffer mounting members 21, and the buffer mounting plate 22 can slide up and down relative to the sliding groove 211 through the protruding plates 221 at two ends of the buffer mounting plate. Wherein, two buffer installation parts 21 are symmetrically arranged at two sides of the buffer installation plate 22.
Further, the length of the sliding groove 211 is smaller than or equal to that of the protruding plate 221, and the sliding groove 211 is a through groove with the upper end and the lower end open. For example, when the length of the sliding groove 211 is smaller than the length of the protruding plate 221, a plurality of buffer mounting members 21 may be provided at equal intervals in the length direction of the protruding plate 221; when the length of the slide groove 211 is equal to the length of the extension plate 221, only one buffer mounting member 21 needs to be provided to be engaged with the extension plate 221.
Further, referring to fig. 3 and 4, a limit groove 222 is formed in one side of the buffer mounting plate 22 close to the buffer mounting member 21, and the first limiting member 23 passes through the limit groove 222 to be connected with the tunnel machine cabin 10, so as to limit the sliding range of the buffer mounting plate 22. Specifically, the limiting groove 222 is formed on a side of the protruding plate 221 away from the sliding groove 211, an extending direction of the limiting groove 222 is the same as an extending direction of the sliding groove 211, and a length of the limiting groove 222 is greater than a width of the first limiting member 23. For example, the first limiting member 23 is fixedly connected to the tunnel machine cabin 10, and the buffer mounting plate 22 can slide up and down relative to the first limiting member 23 through the limiting groove 222. The movement of the buffer mounting plate 22 relative to the buffer mounting part 21 is further limited by the limiting groove 222, and the situation that the extending plate 221 slides out of the sliding groove 211 to cause the buffer mounting plate 22 to fall off from the buffer mounting part 21 is avoided.
Further, a second limiting member 24 is further disposed on a side of the first limiting member 23 away from the tunnel machine cabin 10. A first end of the second limiting member 24 is connected to the first limiting member 23, a second end of the second limiting member 24 is fixedly connected to the buffering mounting member 21, and the extending direction of the second limiting member 24 is perpendicular to the extending direction of the first limiting member 23. For example, the second limiting member 24 can be connected to the buffer mounting member 21 by a screw connection, or can be connected to the buffer mounting member 21 by a snap connection. The second limiting part 24 can limit the position of the buffer mounting plate 22 in the horizontal direction, so that when the buffer mounting plate 22 slides up and down relative to the buffer mounting part 21, the buffer mounting plate 22 swings in the horizontal direction, and the buffer mounting plate 22 and the first limiting part 23 fall off.
Further, referring to fig. 4, the traveling part 30 includes a driving motor 31, traveling wheels 32, and at least one auxiliary wheel 33. Wherein, driving motor 31 is arranged on the buffer mounting plate 22, the travelling wheels 132 are arranged on one side of the driving motor 31, and the driving motor 31 is in driving connection with the travelling wheels 32. The driving direction and the driving speed of the road wheels 32 are adjusted by adjusting the steering direction and the rotating speed of the driving motor 31. For example, when the tunnel boring machine 100 passes through the splicing position of the guide rails, the rotating speed of the driving motor 31 can be adjusted to be low, so that the travelling wheels 32 drive the tunnel boring machine cabin 10 to run at a reduced speed through the buffer mounting plate 22, and further the movement of the buffer mounting plate 22 in the vertical direction is reduced. At least one auxiliary wheel 33 is disposed on one side of the traveling wheel 32 close to the protruding plate 221, so that the contact area between the traveling part 30 and the guide rail is increased, and the traveling stability of the tunnel boring machine 100 is improved.
Further, referring to fig. 5 and 6, the driving motor 31 includes, for example: a motor body 311 and a drive shaft 312. The motor body 311 is disposed on one side of the buffer mounting plate 22 close to the tunnel cabin 10, and the driving shaft 312 passes through the buffer mounting plate 22 and is connected to the road wheels 32. The tunnel machine cabin 10 is provided with a motor mounting groove 11, the motor body 311 is disposed in the motor mounting groove 11, and the depth of the motor mounting groove 11 is greater than the height of the motor body 311. When the walking part 30 drives the buffer mounting plate 22 to slide relatively to the buffer mounting part 21, the motor body 311 can move up and down in the motor mounting groove 11.
Further, a buffer 25 is disposed below the buffer mounting plate 22. Wherein, the buffer 25 is arranged at one side of the buffer mounting plate 22 close to the tunnel machine cabin 10, and the tunnel machine cabin 10 is provided with a corresponding buffer mounting groove 12. Specifically, the buffer member 25 is disposed below the motor body 311, and when the buffer mounting plate 22 slides in the sliding groove 211 of the buffer mounting member 21, the buffer member 25 can reduce the impact force of the buffer mounting plate 22 on the tunnel machine cabin 10. For example, the buffer 25 may be a rectangular buffer strip, a circular buffer ring, or a combination thereof, which is not limited herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A tunneling machine, comprising:
a tunnel machine cabin body;
the buffer part is arranged between the cabin body of the tunnel machine and the walking part;
the walking part is connected to one side, far away from the cabin body of the tunnel machine, of the buffer part;
the walking part can slide up and down relative to the cabin body of the tunnel machine by arranging the buffer part;
the buffer portion includes:
the buffer mounting component is fixedly connected with the tunnel machine cabin body;
the buffer mounting plate is matched with the buffer mounting piece and can slide up and down relative to the buffer mounting piece;
the buffer mounting pieces are at least two and are oppositely arranged, and one side of each buffer mounting piece, which is close to the buffer mounting plate, is provided with a sliding chute;
an extension plate is arranged on one side, close to the buffering mounting piece, of the buffering mounting plate;
the buffer part further includes:
the limiting groove is formed in the buffer mounting plate and is positioned on one side close to the buffer mounting piece;
the first limiting piece penetrates through the limiting groove and is fixedly connected with the cabin body of the tunnel machine;
a second limiting part is further arranged on one side, away from the cabin body of the tunnel boring machine, of the first limiting part; a first end of the second limiting piece is connected with the first limiting piece, a second end of the second limiting piece is fixedly connected with the buffer mounting piece, and the second limiting piece is perpendicular to the extending direction of the first limiting piece;
the length of the sliding groove is less than or equal to that of the extending plate, and the sliding groove is a through groove with the upper end and the lower end communicated;
the length of the limiting groove is larger than the width of the first limiting piece.
2. The tunneling machine of claim 1,
the buffering mounting panel passes through it stretches into to stretch out the board the spout, just the buffering mounting panel sets up two at least between the buffering installed part, the buffering mounting panel passes through it can be relative to stretch out the board the spout slides from top to bottom.
3. The tunneling machine of claim 1,
the extending direction of the limiting groove is the same as the extending direction of the sliding groove, and the extending length of the limiting groove is smaller than or equal to the extending length of the sliding groove.
4. The tunneling machine according to claim 1, wherein the walking portion comprises:
the driving motor is arranged on one side, close to the tunnel machine cabin, of the buffer mounting plate;
the walking wheel is arranged on one side, away from the cabin body of the tunnel machine, of the buffer mounting plate and is in driving connection with the driving motor;
at least one auxiliary wheel is arranged on one side of the travelling wheel.
5. The tunneling machine of claim 4,
the driving motor comprises a motor body and a driving shaft, the tunnel machine cabin body is provided with a motor mounting groove, and the motor body is arranged in the motor mounting groove;
the depth of the motor mounting groove is larger than the height of the motor body.
6. The tunneling machine of claim 5, further comprising: and the buffer piece is arranged below the buffer mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511705.XA CN113309934B (en) | 2021-05-11 | 2021-05-11 | Tunnel machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511705.XA CN113309934B (en) | 2021-05-11 | 2021-05-11 | Tunnel machine |
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| Publication Number | Publication Date |
|---|---|
| CN113309934A CN113309934A (en) | 2021-08-27 |
| CN113309934B true CN113309934B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110511705.XA Active CN113309934B (en) | 2021-05-11 | 2021-05-11 | Tunnel machine |
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| Country | Link |
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| CN (1) | CN113309934B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211780004U (en) * | 2020-03-16 | 2020-10-27 | 杨勇勇 | Tunnel detects radar scanning support |
| CN213027592U (en) * | 2020-09-30 | 2021-04-20 | 台州宙义机电股份有限公司 | Permanent magnet synchronous motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210191132U (en) * | 2019-07-09 | 2020-03-27 | 象山天星汽配有限责任公司 | Improved automobile window guide rail |
| CN211822261U (en) * | 2020-01-19 | 2020-10-30 | 佛山市毅丰电器实业有限公司 | Gear shock-absorbing structure, railcar and move and carry device |
| CN211809597U (en) * | 2020-01-19 | 2020-10-30 | 佛山市毅丰电器实业有限公司 | Rail car |
| CN212744077U (en) * | 2020-08-03 | 2021-03-19 | 江西方兴科技有限公司 | Track and running gear based on same |
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2021
- 2021-05-11 CN CN202110511705.XA patent/CN113309934B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211780004U (en) * | 2020-03-16 | 2020-10-27 | 杨勇勇 | Tunnel detects radar scanning support |
| CN213027592U (en) * | 2020-09-30 | 2021-04-20 | 台州宙义机电股份有限公司 | Permanent magnet synchronous motor |
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| CN113309934A (en) | 2021-08-27 |
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