CN112681211A - Tramcar's track foreign matter clearance collection device - Google Patents

Tramcar's track foreign matter clearance collection device Download PDF

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Publication number
CN112681211A
CN112681211A CN202110054980.3A CN202110054980A CN112681211A CN 112681211 A CN112681211 A CN 112681211A CN 202110054980 A CN202110054980 A CN 202110054980A CN 112681211 A CN112681211 A CN 112681211A
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CN
China
Prior art keywords
groove
lifting
fixedly connected
end wall
rotating
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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.)
Withdrawn
Application number
CN202110054980.3A
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Chinese (zh)
Inventor
廖志曹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Fuhao Technology Co ltd
Original Assignee
Shenzhen Fuhao Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Fuhao Technology Co ltd filed Critical Shenzhen Fuhao Technology Co ltd
Priority to CN202110054980.3A priority Critical patent/CN112681211A/en
Publication of CN112681211A publication Critical patent/CN112681211A/en
Withdrawn legal-status Critical Current

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Abstract

The invention relates to a rail foreign matter cleaning and collecting device of a tramcar, which comprises a car shell, wherein a power connecting device is arranged in the car shell, the power connecting device comprises a rotating cavity, a rotating spline shaft extending forwards and backwards and a rotating shaft positioned on the upper side of the rotating spline shaft are rotatably connected between the front end wall and the rear end wall of the rotating cavity, the front end and the rear end of the rotating spline shaft are fixedly connected with rollers, and a collecting device is arranged on the right side of the power connecting device, so that foreign matters and dust on a rail can be cleaned in advance and collected when the device moves rightwards, the danger caused by passing of the tramcar is prevented, the generation of dust in cities is also reduced, the device is fixed on the tramcar, the labor intensity of manual cleaning is reduced, the working efficiency and the driving safety are increased, when the car amount moves forwards, only a rotating support rod needs to rotate rightwards, the collecting device does not work, and invalid work is avoided.

Description

Tramcar's track foreign matter clearance collection device
Technical Field
The invention relates to the technical field of garbage cleaning, in particular to a rail foreign matter cleaning and collecting device of a tramcar.
Background
Tramcars are also called road tramcars, tramcars are short for short, light rail transit vehicles which are driven by electricity and run on rails, usually the tramcars run on streets and do not exceed five sections, waste gas can not be discharged, the tramcars are pollution-free and environment-friendly public transport vehicles, the tramcars generally need to regularly clean foreign matters on the rails, dangerous or abraded vehicles caused in running are avoided, meanwhile, the rails shuttle in the roads, the passing vehicles can bring silt into the rails, the tramcars can cause dust and gas when running to the upper sides, and the existing manual cleaning work efficiency is very low.
Disclosure of Invention
The invention aims to provide a rail foreign matter cleaning and collecting device for a tramcar, which solves the problems.
The invention is realized by the following technical scheme.
The invention relates to a track foreign matter cleaning and collecting device of a tramcar, which comprises a car shell, wherein a power connecting device is arranged in the car shell, the power connecting device comprises a rotating cavity, a rotating spline shaft extending forwards and backwards and a rotating shaft positioned on the upper side of the rotating spline shaft are rotatably connected between the front end wall and the rear end wall of the rotating cavity, the front end and the rear end of the rotating spline shaft are fixedly connected with rollers, the right side of the power connecting device is provided with a collecting device, the collecting device comprises a lifting reset groove with a downward opening, the front end wall and the rear end wall in the lifting reset groove are respectively provided with a slider groove, a slider is slidably connected in the slider grooves, a spring is fixedly connected between the slider and the car shell, a fixed rotating shaft is rotatably connected between the front slider and the rear slider, a rotating support rod is fixedly connected on the fixed rotating shaft, and, the fixed rotating shaft is fixedly connected with a rotating gear positioned in the upper rotating groove, a lower rotating groove with a downward opening is arranged in the rotating supporting rod, a lower rotating shaft is connected between the front end wall and the rear end wall of the lower rotating groove in a rotating manner, a rolling wheel is fixedly connected to the lower rotating shaft, a left sliding groove is formed in the left end wall of the lifting reset groove, a rack plate sliding groove is formed in the right end wall of the lifting reset groove, a rack plate extending through the lifting reset groove to the left sliding groove is connected in the rack plate sliding groove in a leftward extending manner, a rack plate spring is fixedly connected between the rack plate and the vehicle shell, the lower end face of the rack plate is in a tooth surface design, when the sliding block is positioned at an upper limit position, the rotating gear is meshed with the lower end face of the rack plate, a moving sliding groove is formed in the left end wall of the lifting reset groove, and a moving sliding block extending to the lifting reset groove, and the movable slider is abutted against the left end face of the rotary supporting rod, a movable slider spring is connected between the movable slider and the vehicle shell, when the vehicle shell moves leftwards, the lower side of the rotary supporting rod inclines leftwards, the movable slider moves to a left limit position, two lifting grooves which are symmetrical in front and back and have downward openings are arranged in the vehicle shell, a lifting collection shell is connected in the lifting grooves in a sliding manner, a lifting spring is fixedly connected between the lifting collection shell and the vehicle shell, a limit block sliding groove is arranged on the end wall of one side, away from each other, of the lifting grooves, a limit block extending into the lifting groove is connected in the limit block sliding groove in a sliding manner, a limit block spring is fixedly connected between the limit block and the vehicle shell, and a limit groove is arranged on the end face of one side, away from each other, of, when the limiting groove is located at the upper limit position, a lifting spring is fixedly connected between the lifting collecting shell and the vehicle shell, and the limiting block is located in the limiting groove to limit the position of the lifting collecting shell.
Preferably, fixedly connected with gear in the axis of rotation, spline connection has the lower gear on the rotation integral key shaft, be equipped with the T type annular that the opening is preceding in the lower gear, sliding connection has annular slider in the T type annular, annular slider with fixedly connected with connecting spring between the vehicle casing, fixedly connected with is two about in the axis of rotation the cam of gear longitudinal symmetry, the upper end wall in rotation chamber is equipped with two about the compression groove of gear longitudinal symmetry.
Preferably, sliding connection has downwardly extending to in the compression tank piston rod in the rotatory intracavity, the piston rod with fixedly connected with compression spring between the vehicle casing, the terminal fixedly connected with in bottom of piston rod is located the roof in the rotatory intracavity, just roof and downside correspond the cam butt, two the intercommunication is equipped with the air inlet duct between the compression tank, the air inlet duct with the intercommunication is equipped with the air inlet between the upper end wall in rotatory chamber, the air inlet duct internal stability have two about the one-way admission valve of air inlet longitudinal symmetry, two the intercommunication is equipped with the air outlet channel who is located the upside between the compression tank, air outlet channel internal stability has two one-way air outlet valves.
Preferably, two go up and down to collect be equipped with between the casing with two high-pressure jet ports of terminal surface fixed connection under the vehicle casing, control the downside of high-pressure jet port is kept away from each other, controls the upside of high-pressure jet port all communicates and is equipped with the air outlet groove, go up and down to collect and be equipped with the collecting vat on the left of the opening on the terminal surface of one side that the casing is close to each other, it is connected with the closing plate to rotate between the upper and lower end wall of collecting vat, the closing plate with go up and down to collect fixedly connected.
Preferably, a movable slider stay cord is fixedly connected between the movable slider and the limiting stay cord, when the movable slider moves leftwards, the movable slider stay cord is pulled to enable the lower gear to move forwards and be connected with the gear, the limiting block and the limiting stay cord are fixedly connected between the movable slider, when the movable slider slides leftwards, the limiting stay cord is pulled to enable the limiting block to move towards the direction away from each other, a rack board stay cord is fixedly connected between the rack board and the lifting collection shell, when the rack board slides leftwards, the rack board stay cord is pulled to enable the lifting collection shell to slide upwards, and the other end of the air outlet groove is communicated with the air outlet channel.
The invention has the beneficial effects that: this device can remove when the device moves right, clears away foreign matter and dust on the track in advance to collect the processing to it, prevent that the trolley-bus from causing danger through leading to the fact, also reduce the production of the dust in the city, and the device is fixed on the trolley-bus, reduce artifical intensity of labour who cleans, increase the safety of work efficiency and driving, when the car volume is to sending the direction and is advancing, only need rotate the rotation support pole right, collection device is out of work, avoids invalid work.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view taken from A-A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the embodiment of the present invention shown in FIG. 1 at B-B;
FIG. 4 is a schematic view at C-C in FIG. 3 according to an embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The rail foreign matter cleaning and collecting device for the tramcar described with reference to fig. 1-4 comprises a car housing 10, a power connection device 901 is arranged in the car housing 10, the power connection device 901 comprises a rotation cavity 35, a rotation spline shaft 32 extending forward and backward and a rotation shaft 11 positioned on the upper side of the rotation spline shaft 32 are rotatably connected between the front end wall and the rear end wall of the rotation cavity 35, rollers 33 are fixedly connected to the front end and the rear end of the rotation spline shaft 32, a collecting device 902 is arranged on the right side of the power connection device 901, the collecting device 902 comprises a lifting return groove 69 with a downward opening, slider grooves 18 are arranged on the front end wall and the rear end wall in the lifting return groove 69, sliders 23 are slidably connected in the slider grooves 18, a spring 17 is fixedly connected between the sliders 23 and the car housing 10, and a fixed rotating shaft 16 is rotatably connected between the front slider 23 and, fixedly connected with swivelling joint pole 29 on the fixed rotating shaft 16, be equipped with in the swivelling joint pole 29 by last rotating groove 25 that fixed rotating shaft 16 runs through, fixedly connected with is located on the fixed rotating shaft 16 the rotating gear 15 in last rotating groove 25, be equipped with opening decurrent lower rotating groove 26 in the swivelling joint pole 29, it is connected with lower rotating shaft 27 to rotate between the front and back end wall of lower rotating groove 26, fixedly connected with roll wheel 28 on the lower rotating shaft 27, the left end wall of lift reset groove 69 is equipped with left spout 14, the right end wall of lift reset groove 69 is equipped with rack plate spout 22, sliding connection has left extension to run through in rack plate spout 22 lift reset groove 69 extremely rack plate 19 in the left spout 14, rack plate 19 with fixedly connected with rack plate spring 20 between the vehicle casing 10, the lower terminal surface of rack plate 19 is the flank of tooth design, when the slide block 23 is located at the upper limit position, the lower end face of the rotating gear 15 is engaged with the lower end face of the rack plate 19, the left end wall of the lifting reset groove 69 is provided with a moving slide groove 13, the moving slide groove 13 is internally and slidably connected with a moving slide block 30 which extends to the lifting reset groove 69 rightwards, the moving slide block 30 is abutted against the left end face of the rotating support rod 29, a moving slide block spring 31 is connected between the moving slide block 30 and the vehicle shell 10, when the vehicle shell 10 moves leftwards, the lower side of the rotating support rod 29 inclines leftwards, the moving slide block 30 moves to the left limit position, two lifting grooves 63 which are symmetrical in front and back and have downward openings relative to the lifting reset groove 69 are arranged in the vehicle shell 10, a lifting collection shell 56 is slidably connected in the lifting grooves 63, and a lifting spring 62 is fixedly connected between the lifting collection shell 56 and the vehicle shell 10, be equipped with stopper spout 59 on the one side end wall that goes away from each other of lift groove 63, sliding connection has in stopper spout 59 extends to stopper 64 in the lift groove 63, stopper 64 with fixedly connected with stopper spring 65 between the vehicle casing 10, be equipped with spacing groove 58 on the side end face that lift collection casing 56 kept away from each other, work as when spacing groove 58 is in last extreme position, lift collection casing 56 with fixedly connected with lift spring 62 between the vehicle casing 10, at this moment stopper 64 is in the restriction of spacing inslot 58 the position of lift collection casing 56.
Advantageously, a gear 12 is fixedly connected to the rotating shaft 11, a lower gear 34 is splined to the rotating spline shaft 32, a T-shaped ring groove 45 with a forward opening is formed in the lower gear 34, an annular slide block 48 is slidably connected in the T-shaped ring groove 45, a connecting spring 47 is fixedly connected between the annular slide block 48 and the vehicle shell 10, two cams 49 which are symmetrical front and back with respect to the gear 12 are fixedly connected to the rotating shaft 11, two compression grooves 40 which are symmetrical front and back with respect to the gear 12 are formed in the upper end wall of the rotating cavity 35, a piston rod 51 which extends downwards into the rotating cavity 35 is slidably connected in the compression groove 40, a compression spring 53 is fixedly connected between the piston rod 51 and the vehicle shell 10, a top plate 50 which is located in the rotating cavity 35 is fixedly connected to the bottom end of the piston rod 51, and the top plate 50 abuts against the corresponding cam 49 on the lower side, an air inlet groove 39 is communicated between the two compression grooves 40, an air inlet 52 is communicated between the air inlet groove 39 and the upper end wall of the rotating cavity 35, two one-way air inlet valves 38 which are symmetrical with the air inlet 52 are fixedly arranged in the air inlet groove 39, an air outlet channel 37 which is positioned on the upper side is communicated between the two compression grooves 40, and two one-way air outlet valves 36 are fixedly arranged in the air outlet channel 37.
Beneficially, two high-pressure air nozzles 61 fixedly connected with the lower end surface of the vehicle shell 10 are arranged between the two lifting collecting shells 56, the lower sides of the left and right high-pressure air nozzles 61 are far away from each other, the upper sides of the left and right high-pressure air nozzles 61 are both communicated with an air outlet groove 60, a left opening collecting groove 57 is arranged on one side end surface of the lifting collecting shells 56 close to each other, a sealing plate 66 is rotatably connected between the upper and lower end walls of the collecting groove 57, and a torsion spring 67 is fixedly connected between the sealing plate 66 and the lifting collecting shells 56.
Advantageously, a moving slider pull rope 24 is fixedly connected between the moving slider 30 and the limit pull rope 46, when the moving slider 30 moves leftward, the moving slider pull rope 24 is pulled to move the lower gear 34 forward to connect with the gear 12, a limit pull rope 46 is fixedly connected between the limit block 64 and the moving slider 30, when the moving slider 30 slides leftward, the limit pull rope 46 is pulled to move the limit block 64 in a direction away from each other, a rack plate pull rope 21 is fixedly connected between the rack plate 19 and the lifting and collecting housing 56, when the rack plate 19 slides leftward, the rack plate pull rope 21 is pulled to slide the lifting and collecting housing 56 upward, and the other end of the air outlet groove 60 is communicated with the air outlet channel 37.
In the initial state, the lifting and collecting housing 56 is at the lower limit position, the lower gear 34 is at the front limit position and meshed with the gear 12, the position of the rotary supporting rod 29 close to the lower side is inclined to the left, the movable slider 30 is at the left limit position, the slider 23 is at the lower limit position, the compression spring 53 is always in the compression state, and the rack plate 19 is at the right limit position.
The vehicle shell 10 starts to move to drive the roller 33 to rub with the track, the roller 33 rotates to drive the rotating spline shaft 32 and the lower gear 34 to rotate, the gear 12, the rotating shaft 11 and the two cams 49 are driven to rotate, the top plate 50 and the piston rod 51 continuously move up and down under the action of the cams 49 and the compression springs 53, air enters the compression groove 40 from the air inlet 52 through the one-way air inlet valve 38 and the air inlet groove 39 and is exhausted from the high-pressure air jet 61 through the one-way air outlet valve 36, the air outlet channel 37 and the air outlet groove 60, and the high-pressure air is exhausted from the high-pressure air jet 61 and then exhausts foreign matters in the track 55 to the front side and the;
meanwhile, discharged foreign matters enter the collecting groove 57 through the sealing plate 66 to be collected, so that excessive dust is prevented from being generated, and the phenomenon of splashing of the foreign matters is avoided;
when the vehicle shell 10 moves leftwards, the rotary supporting rod 29 is firstly jacked upwards, meanwhile, the rotary supporting rod 29 is driven to rotate anticlockwise leftwards around the fixed rotating shaft 16, the rotary supporting rod 29 moves upwards to drive the rotary gear 15 and the rack plate 19 to be meshed, meanwhile, the rotary supporting rod 29 rotates to drive the rack plate 19 to move leftwards, further, the rack plate pull rope 21 is pulled to enable the lifting collecting shell 56 to move upwards to the upper limit position, the lifting spring 62 is in a compression state, the limiting block 64 enters the limiting groove 58 to limit the movement of the lifting collecting shell 56, at the moment, under the action of the connecting spring 47, the annular slide block 48 drives the lower gear 34 to move backwards to be separated from the connection with the gear 12, namely, when the device moves leftwards, the collecting.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a tram's track foreign matter clearance collection device, includes vehicle housing, its characterized in that: the vehicle is characterized in that a power connecting device is arranged in the vehicle shell and comprises a rotating cavity, a rotating spline shaft extending front and back and a rotating shaft positioned on the upper side of the rotating spline shaft are rotatably connected between the front end wall and the rear end wall of the rotating cavity, the front end wall and the rear end wall of the rotating spline shaft are fixedly connected with idler wheels, a collecting device is arranged on the right side of the power connecting device and comprises a lifting reset groove with a downward opening, the front end wall and the rear end wall of the lifting reset groove are respectively provided with a slider groove, sliders are connected in the slider grooves in a sliding manner, springs are fixedly connected between the sliders and the vehicle shell, a fixed rotating shaft is rotatably connected between the front slider and the rear slider, a rotating support rod is fixedly connected to the fixed rotating shaft, an upper rotating groove penetrated by the fixed rotating shaft is arranged in the rotating support rod, the automobile lifting device is characterized in that a lower rotating groove with a downward opening is arranged in the rotating support rod, a lower rotating shaft is rotatably connected between the front end wall and the rear end wall of the lower rotating groove, a rolling wheel is fixedly connected to the lower rotating shaft, a left sliding groove is formed in the left end wall of the lifting reset groove, a rack plate sliding groove is formed in the right end wall of the lifting reset groove, a rack plate extending through the lifting reset groove to the left sliding groove is slidably connected to the rack plate sliding groove leftwards, a rack plate spring is fixedly connected between the rack plate and the automobile shell, the lower end face of the rack plate is designed to be a tooth face, when the slide block is located at an upper limit position, the rotating gear is meshed with the lower end face of the rack plate, a moving sliding groove is formed in the left end wall of the lifting reset groove, a moving slide block extending to the lifting reset groove rightwards is slidably connected to the moving slide block, and, a movable slider spring is connected between the movable slider and the vehicle shell, when the vehicle shell moves leftwards, the lower side of the rotary supporting rod inclines leftwards, the movable slider moves to a left limit position, two lifting grooves which are symmetrical in front and back and have downward openings are arranged in the vehicle shell, a lifting collecting shell is connected in the lifting grooves in a sliding manner, a lifting spring is fixedly connected between the lifting collecting shell and the vehicle shell, a limit block sliding groove is arranged on the end wall of one side, away from each other, of each lifting groove, a limit block extending into the lifting groove is connected in the limiting block sliding groove in a sliding manner, a limit block spring is fixedly connected between the limit block and the vehicle shell, a limit groove is arranged on the end surface of one side, away from each other, of the lifting collecting shell, and when the limit groove is in an upper limit, the lifting collecting shell and the vehicle shell are fixedly connected with a lifting spring, and the limiting block is located in the limiting groove to limit the position of the lifting collecting shell at the moment.
2. The rail foreign matter cleaning and collecting device for the tramcar according to claim 1, wherein: fixedly connected with gear in the axis of rotation, the spline connection has the lower gear on the rotation integral key shaft, be equipped with the T type annular that the opening is preceding in the lower gear, sliding connection has annular slider in the T type annular, annular slider with fixedly connected with coupling spring between the vehicle casing, fixedly connected with is two about in the axis of rotation the cam of symmetry around the gear, the upper end wall in rotatory chamber is equipped with two about the compression groove of symmetry around the gear.
3. The rail foreign matter cleaning and collecting device for the tramcar according to claim 2, wherein: sliding connection has downwardly extending to in the compression tank piston rod in the rotatory intracavity, the piston rod with fixedly connected with compression spring between the vehicle casing, the terminal fixedly connected with in bottom of piston rod is located the roof in the rotatory intracavity, just roof and downside correspond the cam butt, two the intercommunication is equipped with the air inlet duct between the compression tank, the air inlet duct with the intercommunication is equipped with the air inlet between the upper end wall in rotatory chamber, the air inlet duct internal stability has two about the one-way admission valve of symmetry around the air inlet, two the intercommunication is equipped with the air outlet channel who is located the upside between the compression tank, air outlet channel internal stability has two one-way air outlet valves.
4. The rail foreign matter cleaning and collecting device for the tramcar according to claim 1, wherein: two go up and down to collect be equipped with between the casing with two high-pressure jet ports of terminal surface fixed connection under the vehicle casing control the downside of high-pressure jet port is kept away from each other, controls the upside of high-pressure jet port all communicates and is equipped with out the air chute, go up and down to collect and be equipped with the collecting vat on the left of the opening on the terminal surface that the casing is close to each other, it is connected with the closing plate to rotate between the upper and lower end wall of collecting vat, the closing plate with go up and down to collect fixedly connected with torsional spring.
5. The rail foreign matter cleaning and collecting device for the tramcar according to claim 1, wherein: the movable sliding block and the limiting pull rope are fixedly connected between the movable sliding block and the limiting pull rope, when the movable sliding block moves leftwards, the movable sliding block pull rope is pulled to enable the lower gear to move forwards and be connected with the gear, the limiting block and the limiting pull rope are fixedly connected between the movable sliding block, when the movable sliding block slides leftwards, the limiting pull rope is pulled to enable the limiting block to move towards the direction away from each other, the rack plate and the rack plate pull rope are fixedly connected between the lifting collecting shells, when the rack plate slides leftwards, the rack plate pull rope is pulled to enable the lifting collecting shells to slide upwards, and the other end of the air outlet groove is communicated with the air outlet channel.
CN202110054980.3A 2021-01-15 2021-01-15 Tramcar's track foreign matter clearance collection device Withdrawn CN112681211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110054980.3A CN112681211A (en) 2021-01-15 2021-01-15 Tramcar's track foreign matter clearance collection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110054980.3A CN112681211A (en) 2021-01-15 2021-01-15 Tramcar's track foreign matter clearance collection device

Publications (1)

Publication Number Publication Date
CN112681211A true CN112681211A (en) 2021-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110054980.3A Withdrawn CN112681211A (en) 2021-01-15 2021-01-15 Tramcar's track foreign matter clearance collection device

Country Status (1)

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CN (1) CN112681211A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113060166A (en) * 2021-05-13 2021-07-02 江苏东科复合材料有限公司 Track transverse moving trolley

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113060166A (en) * 2021-05-13 2021-07-02 江苏东科复合材料有限公司 Track transverse moving trolley
CN113060166B (en) * 2021-05-13 2024-04-26 江苏东科复合材料有限公司 Track sideslip dolly

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Application publication date: 20210420