CN212052516U - Light-duty assembled subway tunnel cleaning cart - Google Patents
Light-duty assembled subway tunnel cleaning cart Download PDFInfo
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- CN212052516U CN212052516U CN202020533225.4U CN202020533225U CN212052516U CN 212052516 U CN212052516 U CN 212052516U CN 202020533225 U CN202020533225 U CN 202020533225U CN 212052516 U CN212052516 U CN 212052516U
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Abstract
The utility model discloses a light-duty assembled subway tunnel cleaning vehicle, which comprises a front vehicle and a rear vehicle, wherein the front vehicle and the rear vehicle can be rapidly assembled and separated through a lock catch; the front vehicle is detachably provided with a water tank, and the rear vehicle is provided with a power device, a cleaning device and a central console; the central control console is used for acquiring working condition data of the subway tunnel cleaning vehicle, controlling the power device to drive the whole vehicle to move forward and controlling the cleaning device to perform cleaning operation; the cleaning device is provided with a water pressure adjusting mechanism for controlling water pressure and a spray head lifting mechanism for avoiding obstacles, and the water pressure can be manually adjusted through a central console to lift the spray head; the equipment is light and convenient, has high automation degree, can be quickly disassembled and assembled to enter the subway tunnel through the subway station, and cleans the subway track and the tunnel wall.
Description
Technical Field
The utility model relates to an environmental protection cleaning device field, concretely relates to light-duty assembled subway tunnel cleaning cart.
Background
In recent years, with the rapid development of Chinese economic construction and the continuous improvement of urbanization level, urban underground space is developed and utilized in large scale, and subways are rapidly developed as a typical underground urban rail transit system. After the subway tunnel is operated for a period of time, dust pollution of different degrees can be generated on the top, two sides, a track bed, trackside equipment and the like of the tunnel. In the running process of a train, dust can pollute equipment under the train, influence driving safety and cause adverse effects on the environment in the train. Therefore, keeping the subway rails clean is an important component for ensuring safe operation of the subway.
The cleaning technology of the subway tunnel is earlier developed in Germany, France and the like, and a typical product is a large tunnel cleaning vehicle integrating a plurality of cleaning modes. The subway tunnel is not paid enough attention to the cleaning in China, and related researches are still in the starting stage. At present, the subway tunnel in China is mainly cleaned manually, but the method has low working efficiency, high labor intensity and poor cleaning effect.
According to the current situation of urban subways in China, large tunnel cleaning vehicles are difficult to enter subway lines. For example, in a surveyed Shanghai subway line, the existing tunnel cleaning vehicle enters a subway running rail through a rail connected with the ground, the investment of the rail, the tunnel and ground artifacts needs to be additionally increased, and the investment is large. And the conditions for constructing the relevant connection facilities are usually only available at the head and tail stations of the line and partial suburbs due to the limitation of ground buildings and roads. In addition, urban subways are basically operated all the year round and can only be operated in a time period from the end of daily business to the next day business. The tunnel cleaning vehicle cannot achieve the cleaning effect when the vehicle speed is too high, even if a single station has the condition of entering a large tunnel cleaning vehicle, the distance between adjacent stations where the tunnel cleaning vehicle can be put in is too long, the cleaning operation of the whole line is difficult to complete in the daily business intermittence time, and most tunnels have to be cleaned manually. The cleaning cost is too high, so that subway operation units have to compress cleaning frequency, and the subway operation environment and electrical equipment in a tunnel are difficult to effectively protect.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a light-duty assembled subway tunnel cleaning vehicle, the equipment can be assembled and disassembled fast and enter the subway tunnel through the subway station, clean subway track and tunnel wall; the equipment is light and convenient, has high automation degree, and is suitable for being arranged in various subway stations in batches to clean the subway tunnel interval.
A light assembled subway tunnel cleaning vehicle comprises a front vehicle and a rear vehicle, wherein the front vehicle and the rear vehicle can be rapidly assembled and separated through a lock catch;
the front vehicle is detachably provided with a water tank, and the rear vehicle is provided with a power device, a cleaning device and a central console;
the central console integrates an automatic control system and a manual control system and a display device, and a microcomputer arranged in the central console can control the subway tunnel cleaning vehicle to automatically advance and clean the track after an operator sets parameters;
the central control console collects working condition data of the subway tunnel cleaning vehicle through the sensor, and an operator can monitor real-time working condition data such as vehicle speed, water quantity of a water tank, water pressure, electric quantity of a rechargeable battery and the like through the display device;
the central control station is also integrated with a communication device, an operator can communicate with the central control station through a mobile phone APP, receive real-time working condition data and an alarm signal, and can emergently control the subway tunnel cleaning vehicle to stop through the mobile phone APP;
an operator can also set water pressure through the central console, the water quantity is increased when dust and dirt in the subway tunnel are serious, the water pressure can be adjusted and reduced through common routine cleaning, water is saved, and the working distance of the subway tunnel cleaning vehicle is prolonged;
the central console is provided with a switch for controlling the power device, the power device automatically drives the whole vehicle to move according to the set speed per hour after the vehicle is started, and an operator can manually control the vehicle to stop moving forwards and backwards through the switch;
the cleaning device is provided with a water pressure adjusting mechanism for controlling water pressure and a sprayer lifting mechanism for avoiding obstacles, and the water pressure and the sprayer can be adjusted and lifted manually through the central console.
Preferably, the cleaning device comprises five nozzles, each nozzle is connected with the water tank sequentially through a nozzle lifting mechanism and a water pressure adjusting mechanism, namely each nozzle is independently connected with a water path to the water tank;
the five spray heads are positioned at the bottom of the rear vehicle and distributed in a trapezoidal shape;
three spray heads are arranged on the short side of the trapezoid, wherein the central spray head sprays towards the front, the left spray head sprays towards the left side, and the right spray head sprays towards the right side;
two spray heads are arranged on the long side of the trapezoid, wherein the left spray head sprays to the left side, and the right spray head sprays to the right side;
the train track usually includes two rails and the road bed that bears the weight of the rail, and the train wheel mainly contacts with rail upper portion and rail inboard, and rail upper portion is usually ground by the train wheel and is very bright, therefore the rail inboard is clean key, and five shower nozzles are trapezoidal to be arranged, and each side rail respectively has two crisscross direct injection washing of shower nozzle, has avoided spraying the dead angle, can all wash scaling and dust, and the shower nozzle that trapezoidal minor face was placed in the middle is mainly used for washing the dust on the road bed.
Preferably, the five nozzles are fan-shaped nozzles, and the fan-shaped angle is more than or equal to 45 degrees and less than or equal to 65 degrees;
adopt wide angle shower nozzle, enlarged the working area of shower nozzle, can guarantee in addition that the rail is by hierarchical wasing: the cleaning water sprayed by each spray head is a fan-shaped water column under the influence of the shape of the spray head, and the fan-shaped side wing of the water column of the spray head sprayed towards the front firstly contacts with the rail, so that only floating ash can be washed away due to the spraying distance, but scale can be soaked; the water columns of the two nozzles positioned at the two sides of the short side of the trapezoid further clean the scale deposit; and the two spray heads positioned on the long side of the trapezoid clean the rail for the third time, are closest to the rail, and the cleaning force of the cleaning water column is the largest.
The cleaning of scaling needs a time process, not only needs certain water pressure, and the cleaning time is too short not enough sanitization, and the shower nozzle of trapezoidal arranging makes the rail obtain the different water columns of three strands of strength and washes in succession, and the effect is better than the cleaning performance of a water column to the distance between many shower nozzles and the rail is different, and the fan-shaped water column of stranded has also guaranteed not have the dead angle when cleaning the rail.
Preferably, each water pressure adjusting mechanism comprises a liquid level meter, a flow meter and a pressure sensor, the measured values of the liquid level meter, the flow meter and the pressure sensor are transmitted to the central console in real time, and when the measured values exceed a set range, the central console sends out an alarm signal and controls the cleaning device to stop working;
each water pressure adjusting mechanism also comprises a water pump and two pressure relays, the water inlet end and the water outlet end of the water pump are respectively connected with a pressure relay pipeline, and the water pump is triggered to stop working when the pressure of any one of the pressure relays is overloaded;
the central console adjusts the output power of the water pump in real time according to the measured value of the pressure sensor, and the water pressure is kept stable.
Preferably, each spray head lifting mechanism comprises a stepping motor and a lifting sleeve, the stepping motor is used for driving the lifting sleeve to stretch, and the bottom end of the lifting sleeve is connected with one spray head;
the stepping motor is controlled by the center console.
Preferably, the system also comprises an ultrasonic sensor, wherein the ultrasonic sensor is positioned at the bottom of the front vehicle and used for detecting obstacles on the subway track;
the ultrasonic sensor is in signal connection with the central console, and the central console controls the stepping motor to lift the lifting sleeve to cross the obstacle according to the detection signal;
the ultrasonic sensor is mainly used for triggering the spray head lifting mechanism to lift the spray head under the automatic control state of the subway tunnel cleaning vehicle and triggering an alarm when the whole vehicle cannot pass through the obstacle, and the operation of the subway tunnel cleaning vehicle is stopped when an operator does not perform evasive operation within a required time range by the central console.
Preferably, the cleaning device further comprises a long-rod manual spray gun;
a wrench for switching water flow is arranged at the holding part of the long-rod manual spray gun;
the long-rod manual spray gun and the spray head positioned in the middle of the short side of the trapezoid share the water pump;
the long-rod manual spray gun is designed to meet the requirement of convenient operation in a tunnel environment, and is mainly used for cleaning dust and dirt which are difficult to automatically remove on the side wall of a tunnel and a track, and the long rod increases the effective working distance of the long-rod manual spray gun;
and the water pump is shared by the nozzles positioned in the middle of the trapezoidal short side, so that the cleaning of the track is not influenced, the servicing weight of the subway tunnel cleaning vehicle is reduced, and the cost is saved.
Preferably, rolling brushes for cleaning rails are respectively arranged on two sides of the bottom of the front vehicle;
the rolling brush is driven to rotate through a wheel shaft of a travelling wheel of the front vehicle, a motor does not need to be configured for driving, the rolling brush is mainly used for performing friction dust removal and descaling on the rail before a spray head, and is arranged on the front vehicle, so that the pollution of sewage to the rail is avoided.
Preferably, the brake device further comprises a brake device, the brake device comprises brake supports of a plane four-bar structure which are respectively arranged at the upper parts of the travelling wheels at the rear parts of the two sides of the front vehicle, the two brake supports are connected by adopting a cross bar, and the bottom of each brake support is provided with an arc-shaped brake pad at a position close to the travelling wheel.
Preferably, the power device comprises a motor and a rechargeable battery, and a control signal wire of the motor is connected with the center console.
The utility model has the advantages that: the utility model discloses a light-duty assembled subway tunnel cleaning vehicle, which comprises a front vehicle and a rear vehicle, wherein the front vehicle and the rear vehicle can be rapidly assembled and separated through a lock catch; the front vehicle is detachably provided with a water tank, and the rear vehicle is provided with a power device, a cleaning device and a central console; the central control console is used for acquiring working condition data of the subway tunnel cleaning vehicle, controlling the power device to drive the whole vehicle to move forward and controlling the cleaning device to perform cleaning operation; the cleaning device is provided with a water pressure adjusting mechanism for controlling water pressure and a spray head lifting mechanism for avoiding obstacles, and the water pressure can be manually adjusted through a central console to lift the spray head; the equipment is light and convenient, has high automation degree, can be quickly disassembled and assembled to enter the subway tunnel through the subway station, and cleans the subway track and the tunnel wall.
Drawings
The following description will be further made on the light-duty assembled subway tunnel cleaning vehicle of the present invention with reference to the accompanying drawings.
Fig. 1 is the utility model relates to a whole car stereogram of light-duty assembled subway tunnel cleaning cart.
Fig. 2 is the utility model relates to an inner structure stereogram of light-duty assembled subway tunnel cleaning cart.
Fig. 3 is the utility model relates to a right rear visual angle of inner structure of light-duty assembled subway tunnel cleaning cart.
Fig. 4 is a bottom view arrangement of the showerhead.
Fig. 5 is a schematic diagram of the water pressure adjusting mechanism of the present invention.
Fig. 6 is an assembly view of the brake device of the present invention.
Fig. 7 is a schematic diagram of the braking device of the present invention.
In the figure:
100-front vehicle, 200-rear vehicle, 1-lock catch, 2-water tank, 3-power device, 31-motor, 32-rechargeable battery, 4-cleaning device, 41-water pressure adjusting mechanism, 411-liquid level meter, 412-flowmeter, 413-pressure sensor, 414-water pump, 415-pressure relay, 416-overflow valve, 42-nozzle lifting mechanism, 421-stepping motor, 422-lifting sleeve, 43-nozzle, 44-long rod manual spray gun, 5-center console, 6-ultrasonic sensor, 7-rolling brush, 8-braking device, 81-braking bracket, 82-arc brake pad, 9-headlamp.
Detailed Description
The following description is further made with reference to fig. 1 to 7 for a light-duty assembled subway tunnel cleaning vehicle of the present invention.
The light-weight assembled subway tunnel cleaning vehicle shown in fig. 1-3 comprises a front vehicle 100 and a rear vehicle 200, wherein the front vehicle 100 and the rear vehicle 200 can be rapidly assembled and separated through a lock catch 1;
the lock catch 1 is positioned at the joint of the front vehicle 100 and the rear vehicle 200, and 3 locks are respectively arranged at two sides of the vehicle body;
the frames of the front vehicle 100 and the rear vehicle 200 are main bearing parts, particularly the floor cross beam is not effective after being stressed; through theoretical calculation and checking, aluminum profiles with low density and high strength are selected on the premise of meeting the bearing requirement, finite element software is used for modeling the frame, stress strength analysis, buckling analysis and fatigue analysis are carried out on frames with different structures, the optimal solution of frame design is determined by combining theoretical calculation, and the requirement of lightweight design is met to the greatest extent;
the inside size of a common barrier-free elevator in a subway station is 2280mm multiplied by 1480mm multiplied by 2300mm, the size of an elevator door of the barrier-free elevator is 900mm multiplied by 2100mm, the frame sizes of a front car 100 and a rear car 200 are not larger than the inside size of the barrier-free elevator and the size of the barrier-free elevator door, the barrier-free elevator can be disassembled and carried into a tunnel after being used, and cleaning work is started after the barrier-free elevator is assembled;
the front car 100 is detachably provided with a water tank 2, the rear car 200 is provided with a power device 3, a cleaning device 4 and a central console 5, wherein the water tank 2 is detachable, when the subway tunnel cleaning car is conveyed, the water tank 2 can be detached, the front car 100 and the rear car 200 are separated by opening the lock catch 1 and are respectively conveyed, the limitation of conveying channels and conveying equipment is reduced, and the water tank can pass through a goods elevator of a subway station;
the central control platform 5 is positioned at the upper part of the rear vehicle 200 for convenient operation and is used for acquiring working condition data of the subway tunnel cleaning vehicle, controlling the power device 3 to drive the whole vehicle to move and controlling the cleaning device 4 to perform cleaning operation;
the cleaning device 4 is further provided with a water pressure adjusting mechanism 41 for controlling water pressure and a head elevating mechanism 42 for avoiding obstacles, and the water pressure adjusting mechanism 41 and the head elevating mechanism 42 are controlled by the center console 5.
In this embodiment, the cleaning device 4 includes five nozzles 43, and each nozzle 43 is connected to the water tank 2 sequentially through a nozzle lifting mechanism 42 and a water pressure adjusting mechanism 41;
as shown in fig. 4, five spray heads 43 are positioned at the bottom of the rear vehicle 200 and distributed in a trapezoidal shape;
three spray heads 43 are arranged on the short side of the trapezoid, wherein the central spray head 43 sprays towards the front, the left spray head 43 sprays towards the left, and the right spray head 43 sprays towards the right;
two spray heads 43 are arranged on the longer side of the trapezoid, wherein the left spray head 43 sprays to the left and the right spray head 43 sprays to the right.
In this embodiment, the five nozzles 43 are fan nozzles, and the fan angle is 45 ° or more and 65 ° or less.
In the present embodiment, the design principle of the water pressure adjusting mechanism 41 is as shown in fig. 5: each water pressure adjusting mechanism 41 comprises a liquid level meter 411, a flow meter 412 and a pressure sensor 413, the measured values of the liquid level meter 411, the flow meter 412 and the pressure sensor 413 are transmitted to the central console 5 in real time, and when the measured values exceed a set range, the central console 5 sends out an alarm signal and controls the cleaning device 4 to stop working;
each water pressure regulating mechanism 41 further comprises a water pump 414 and two pressure relays 415, wherein the water inlet end and the water outlet end of the water pump 414 are respectively connected with one pressure relay 415 through pipelines, and the water pump 414 is triggered to stop working when the pressure of any one pressure relay 415 is overloaded;
the center console 5 adjusts the output power of the water pump 414 in real time according to the measured value of the pressure sensor 413, and keeps the water pressure stable;
in addition, the water pressure adjusting mechanism 41 is also provided with an overflow valve 416, so that the pipeline is prevented from being damaged when the water pressure is abnormally increased;
in this embodiment, each of the nozzle lifting mechanisms 42 includes a step motor 421 and a lifting sleeve 422, the step motor 421 is used for driving the lifting sleeve 422 to extend and retract, and the bottom end of the lifting sleeve 422 is connected to one nozzle 43;
the stepping motor 421 is controlled by the console 5, when an obstacle is encountered, the stepping motor 421 drives the lifting sleeve 422 to contract, the spray head 43 rises, so as to avoid the obstacle, and after the obstacle passes, the stepping motor 421 drives the lifting sleeve 422 to extend, so as to control the spray head 43 to descend.
In the embodiment, the device further comprises an ultrasonic sensor 6, wherein the ultrasonic sensor 6 is located at the bottom of the front vehicle 100 and is used for detecting obstacles on the subway track;
the ultrasonic sensor 6 is in signal connection with the console 5, and the console 5 controls the stepping motor 421 to lift the lifting sleeve 422 to pass through the obstacle according to the detection signal.
In this embodiment, the cleaning device 4 further comprises a long-rod manual spray gun 44;
the holding part of the long-rod manual spray gun 44 is provided with a wrench for switching on and off water flow;
a long-stick hand lance 44 shares a water pump with a centrally located spray head 43 located at the short side of the trapezoid.
In this embodiment, the rolling brushes 7 for cleaning rails are respectively arranged on two sides of the bottom of the front vehicle 100;
the rolling brush 7 is driven to rotate by the wheel shaft of the travelling wheel of the front vehicle 100, and the height of the rolling brush 7 is enough to fully cover the inner wall of the rail.
In the embodiment shown in fig. 6 to 7, the brake device 8 is further included, the brake device 8 includes brake brackets 81 respectively disposed on the upper portions of the traveling wheels at the rear portions of both sides of the front vehicle 100, an arc-shaped brake pad 82 is disposed at a position of the bottom of each brake bracket 81 close to the traveling wheel, and the two brake brackets 81 are connected by a cross bar.
Based on the mechanical principle, a manual brake lever on the upper part of the brake bracket 81 is supported by a plane four-bar mechanism; based on the lever principle, the force arm of the hand brake lever is increased, and the moment is increased, so that the braking effect is more obvious;
when an operator presses the hand brake rod downwards through the force arm, the four-bar mechanism transmits force to the arc brake block 82 with the tail end positioned near the wheel, the arc brake block 82 rubs with the wheel to achieve the braking effect,
in this embodiment, the power device 3 includes a motor 31 and a rechargeable battery 32, a control signal line of the motor 31 is connected with the center console 5, and the center console performs PWM speed regulation according to a set value;
a headlamp 9 for illumination is also mounted on the front portion of the front vehicle 100.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The light assembled subway tunnel cleaning vehicle is characterized by comprising a front vehicle (100) and a rear vehicle (200), wherein the front vehicle (100) and the rear vehicle (200) can be rapidly assembled and separated through a lock catch (1);
the front vehicle (100) is detachably provided with a water tank (2), and the rear vehicle (200) is provided with a power device (3), a cleaning device (4) and a central console (5);
the central control console (5) is used for acquiring working condition data of the subway tunnel cleaning vehicle, controlling the power device (3) to drive the whole vehicle to move forward and controlling the cleaning device (4) to perform cleaning operation;
the cleaning device (4) is further provided with a water pressure adjusting mechanism (41) for controlling water pressure and a sprayer lifting mechanism (42) for avoiding obstacles, and the water pressure adjusting mechanism (41) and the sprayer lifting mechanism (42) are controlled through the central control console (5).
2. A light-duty assembled subway tunnel cleaning vehicle as claimed in claim 1, wherein said washing device (4) comprises five nozzles (43), each nozzle (43) is connected to said water tank (2) sequentially through a nozzle lifting mechanism (42) and a water pressure adjusting mechanism (41);
the five spray heads (43) are positioned at the bottom of the rear vehicle (200) and distributed in a trapezoidal shape;
three spray heads (43) are arranged on the short side of the trapezoid, wherein the central spray head (43) sprays towards the front, the left spray head (43) sprays towards the left, and the right spray head (43) sprays towards the right;
two spray heads (43) are arranged on the long side of the trapezoid, wherein the spray head (43) on the left side sprays to the left side, and the spray head (43) on the right side sprays to the right side.
3. A light-duty modular subway tunnel cleaning vehicle as claimed in claim 2, characterized in that said five spraying heads (43) are fan-shaped spraying heads and the fan angle is 45 ° ≦ 65 °.
4. A light-weight assembled subway tunnel cleaning vehicle as claimed in claim 3, wherein each water pressure regulating mechanism (41) comprises a liquid level meter (411), a flow meter (412) and a pressure sensor (413), the measured values of said liquid level meter (411), said flow meter (412) and said pressure sensor (413) are transmitted to said center console (5) in real time, when the measured values are out of the set range, said center console (5) will send out alarm signal and control said cleaning device (4) to stop working;
each water pressure adjusting mechanism (41) further comprises a water pump (414) and two pressure relays (415), the water inlet end and the water outlet end of the water pump (414) are respectively connected with one pressure relay (415) through pipelines, and the water pump (414) is triggered to stop working when the pressure of any one pressure relay (415) is overloaded;
the central console (5) adjusts the output power of the water pump (414) in real time according to the measured value of the pressure sensor (413) to keep the water pressure stable.
5. A light-duty assembled subway tunnel cleaning vehicle as claimed in claim 4, characterized in that, each sprayer lifting mechanism (42) includes a step motor (421) and a lifting sleeve (422), said step motor (421) is used for driving the lifting sleeve (422) to extend and retract, the bottom end of said lifting sleeve (422) is connected with a sprayer (43);
the stepping motor (421) is controlled by a central console (5).
6. A light-duty modular subway tunnel cleaning vehicle as claimed in claim 5, characterized in that it further comprises an ultrasonic sensor (6), said ultrasonic sensor (6) being located at the bottom of said front vehicle (100) for detecting obstacles on the subway rail;
the ultrasonic sensor (6) is in signal connection with the central console (5), and the central console (5) controls the stepping motor (421) to lift the lifting sleeve (422) to pass through an obstacle according to a detection signal.
7. A light-duty modular subway tunnel cleaning vehicle as claimed in claim 6, characterized in that said cleaning device (4) further comprises a long-pole manual spray gun (44);
a wrench for switching water flow is arranged at the holding part of the long-rod manual spray gun (44);
the long-rod manual spray gun (44) and the central spray head (43) positioned at the short side of the trapezoid share a water pump.
8. A light-duty assembled subway tunnel cleaning vehicle as claimed in claim 7, characterized in that said front vehicle (100) is provided with rolling brushes (7) for cleaning rails on both sides of the bottom thereof, respectively;
the rolling brush (7) is driven to rotate by the wheel shaft of the row wheel of the front vehicle (100).
9. A light-duty assembled subway tunnel cleaning vehicle as claimed in claim 8, further comprising a brake device (8), said brake device (8) comprising a brake bracket (81) of planar four-bar structure separately provided on the upper portion of the road wheel at the rear of both sides of said front vehicle (100), the bottom of each brake bracket (81) being provided with an arc-shaped brake pad (82) at a position close to the road wheel.
10. A light-duty modular subway tunnel cleaning vehicle as claimed in claim 1, characterized in that said power unit (3) comprises an electric motor (31) and a rechargeable battery (32), the control signal line of said electric motor (31) being connected to said central console (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020533225.4U CN212052516U (en) | 2020-04-13 | 2020-04-13 | Light-duty assembled subway tunnel cleaning cart |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020533225.4U CN212052516U (en) | 2020-04-13 | 2020-04-13 | Light-duty assembled subway tunnel cleaning cart |
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| CN212052516U true CN212052516U (en) | 2020-12-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208829A1 (en) * | 2020-04-13 | 2021-10-21 | 华东理工大学 | Light assembled metro tunnel cleaning vehicle |
| CN114146978A (en) * | 2021-11-17 | 2022-03-08 | 庆铃汽车（集团）有限公司 | Automatic cleaning method for tunnel lamp |
-
2020
- 2020-04-13 CN CN202020533225.4U patent/CN212052516U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208829A1 (en) * | 2020-04-13 | 2021-10-21 | 华东理工大学 | Light assembled metro tunnel cleaning vehicle |
| CN114146978A (en) * | 2021-11-17 | 2022-03-08 | 庆铃汽车（集团）有限公司 | Automatic cleaning method for tunnel lamp |
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