CN111608681A - Equipment for preventing falling rocks at railway tunnel portal - Google Patents
Equipment for preventing falling rocks at railway tunnel portal Download PDFInfo
- Publication number
- CN111608681A CN111608681A CN202010496768.8A CN202010496768A CN111608681A CN 111608681 A CN111608681 A CN 111608681A CN 202010496768 A CN202010496768 A CN 202010496768A CN 111608681 A CN111608681 A CN 111608681A
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- fixedly arranged
- cavity
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- starting
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- 239000011435 rock Substances 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 230000003139 buffering effect Effects 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 7
- 208000002925 dental caries Diseases 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a device for preventing falling rocks at a railway tunnel portal, which comprises a machine body and two fixed columns, wherein a buffer cavity is arranged in the machine body, a crushing cavity is arranged at the upper side of the machine body, a starting cavity is arranged at the upper side of the buffer cavity, a bevel gear cavity is arranged at the front side of the crushing cavity, a protective device for buffering the falling rocks is arranged in the buffer cavity, the protective device comprises a hydraulic pump fixedly arranged at the lower side of the machine body, a bearing column is connected in each fixed column in a sliding manner, a bearing spring is connected between the fixed column and the bearing column, two sealing cylinders which are symmetrical in the front and back are fixedly arranged on the lower side wall of the buffer cavity, a starting device of the starting device is arranged in the starting cavity, a crushing device for crushing small falling rocks is arranged in the crushing cavity, and the staff is reminded, the damage caused by falling rocks can be effectively reduced, and the property and the personal safety are protected.
Description
Technical Field
The invention relates to the field of railway construction protection devices, in particular to a device for preventing falling rocks at a railway tunnel portal.
Background
At present, along with the development of society, railways are continuously developed and become an indispensable part of society, and the railway construction in tunnels encounters many problems, wherein, the risk of rock fall exists at the position of a tunnel mouth, the rock fall is the simplest and most conventional form of mountain landslide, the rock fall with different sizes and scales continuously occurs in any mountain body under the action of gravity, wind power or other factors, and the rock fall in the railway construction causes disasters and property life loss.
Disclosure of Invention
Aiming at the technical defects, the invention provides a device for preventing falling rocks at a railway tunnel portal, which can overcome the defects.
The invention discloses a device for preventing falling rocks at a railway tunnel portal, which comprises a machine body and two fixed columns, wherein a buffer cavity is arranged in the machine body, a crushing cavity is arranged on the upper side of the machine body, a starting cavity is arranged on the upper side of the buffer cavity, a conical tooth cavity is arranged on the front side of the crushing cavity, and a protective device for buffering falling rocks is arranged in the buffer cavity; the protection device comprises a hydraulic pump fixedly arranged on the lower side of the machine body, a bearing column is connected in each fixing column in a sliding manner, a bearing spring is connected between each fixing column and the corresponding bearing column, two sealing cylinders which are symmetrical front and back are fixedly arranged on the lower side wall of the buffer cavity, a sealing piston is connected in each sealing cylinder in a sliding manner, a piston spring is connected between each sealing piston and the lower side wall of each sealing cylinder, a sealing rod is fixedly arranged on each sealing piston, a fixing slide block is fixedly arranged on the upper side of each bearing column, a bearing plate is connected on the upper side of each bearing column and the upper side of each sealing rod in a sliding manner, four first springs are connected between each bearing plate and the corresponding fixing slide block, four fixing rings are fixedly arranged on each sealing rod, a second spring is connected between each fixing ring and the corresponding bearing plate, and a damping spring, a buffer spring is connected between the bearing plate and each sealing cylinder, a conical angle plate is fixedly arranged in the two bearing plates, an alarm is fixedly arranged on the lower side of the conical angle plate, a power supply is fixedly arranged on the upper side of the machine body, and a lead is connected between the power supply and the alarm; the starting cavity is internally provided with a starting device of the starting equipment, and the crushing cavity is internally provided with a crushing device for crushing small falling rocks.
Preferably, a hydraulic cylinder is fixedly arranged in the conical angle plate, a hydraulic piston is connected in the hydraulic cylinder in a sliding manner, a hydraulic rod is fixedly arranged on the hydraulic piston, a hydraulic plate is fixedly arranged on the upper side of the hydraulic rod, two first pin shafts are hinged in the hydraulic plate, a side plate is fixedly arranged on each first pin shaft, two side sliders which are symmetrical front and back are connected in the alarm in a sliding manner, slider springs are connected on the side sliders, rotating blocks are fixedly arranged on the side sliders, a second pin shaft is hinged between each rotating block and the side plate, and a hydraulic pipe is connected between the hydraulic pump and the hydraulic cylinder.
Preferably, the starting device comprises a fixed sleeve fixedly arranged on the lower side wall of the starting cavity, two conductive holes are arranged in the fixed sleeve, a contact plate is connected in the conductive holes in a sliding manner, a contact spring is connected on the contact plate, a wire is fixedly arranged on the contact plate and is connected with the power supply, rotary cavities are respectively arranged on the front side and the rear side of the starting cavity, a connecting rod rotating shaft is rotatably connected between the rotary cavity and the starting cavity, a baffle connecting rod is fixedly arranged on the connecting rod rotating shaft in the rotary cavity, a rotating shaft torsion spring connected with the connecting rod rotating shaft is respectively fixedly arranged on the front side wall and the rear side wall of each rotary cavity, starting baffles are fixedly arranged on the two baffle connecting rods, a rotary screw rod is fixedly arranged in the connecting rod rotating shaft, a connecting rod is slidably connected on the rear side wall of the starting cavity, and a fixed threaded sleeve connected, two electrode rods are fixedly arranged on the fixed screw sleeve, and the power supply controls the main motor and the hydraulic pump to be started.
Preferably, the crushing device comprises a main motor fixedly installed on the lower side of the crushing cavity, the main motor is in power connection with a motor shaft, a first bevel gear is fixedly arranged on the motor shaft, a driving rotating shaft is rotatably connected to the rear side wall of the crushing cavity, a second bevel gear meshed with the first bevel gear is fixedly arranged on the front side of the driving rotating shaft, a crushing wheel is fixedly arranged in the driving rotating shaft, fixing teeth are fixedly arranged on the front side wall and the rear side wall of the crushing cavity respectively, crushing teeth are fixedly arranged on the crushing wheel, side teeth are fixedly arranged on the side face of the crushing wheel, a fixing plate is fixedly arranged on the lower side wall of the crushing cavity, bottom plate teeth are fixedly arranged on the fixing plate, and an inlet is arranged on the.
The beneficial effects are that: the utility model provides an equipment of falling rocks is prevented to railway tunnel portal, wherein protector pounces constructor and construction tool when can effectually taking precautions against the falling rocks whereabouts, starting drive can be at automatic start equipment after the falling rocks takes place, and can automatic alarm, remind people, reducing mechanism can directly smash little falling rocks, eliminate harm, starting drive when this equipment can take place automatically at the falling rocks, protect tunnel portal's railway construction safety, and remind the staff, the harm that the stone caused can be fallen effectively less, protect property and personal safety.
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 view of the whole section of the device for preventing falling rocks at a railway tunnel portal of the invention, which is a main view structure;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1 in accordance with the present invention;
FIG. 5 is an enlarged view of a portion of the present invention at D of FIG. 1;
fig. 6 is a partial enlarged view of the invention at E in fig. 3.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations and/or steps that are mutually exclusive.
The invention will now be described in detail with reference to fig. 1-6, for convenience of description, the following orientations will now be defined: 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 invention discloses a device for preventing falling rocks at a railway tunnel portal, which comprises a machine body 10 and two fixed columns 34, wherein a buffer cavity 65 is arranged in the machine body 10, a crushing cavity 66 is arranged on the upper side of the machine body 10, a starting cavity 67 is arranged on the upper side of the buffer cavity 65, a bevel gear cavity 68 is arranged on the front side of the crushing cavity 66, a protective device 69 for buffering falling rocks is arranged in the buffer cavity 65, the protective device 69 comprises a hydraulic pump 23 fixedly arranged on the lower side of the machine body 10, a bearing column 35 is connected in each fixed column 34 in a sliding manner, a bearing spring 36 is connected between each fixed column 34 and the bearing column 35, two sealing cylinders 24 which are symmetrical in the front-back direction are fixedly arranged on the lower side wall of the buffer cavity 65, a sealing piston 25 is connected in each sealing cylinder 24 in a sliding manner, a piston spring 26 is connected between each sealing piston 25 and the lower side wall of each sealing cylinder 24, a fixed slide block 38 is fixedly arranged on the upper side of the bearing column 35, a bearing plate 31 is connected on the upper sides of the bearing column 35 and the sealing rod 27 on one side in a sliding way, four first springs 39 are connected between the bearing plate 31 and the fixed sliding block 38, four fixed rings 29 are fixedly arranged on the sealing rod 27, a second spring 30 is connected between each fixed ring 29 and the bearing plate 31, a damping spring 37 is connected between the bearing plate 31 and each fixing column 34, a buffer spring 28 is connected between the bearing plate 31 and each sealing cylinder 24, a bevel plate 33 is fixedly arranged in the two bearing plates 31, the lower side of the cone angle plate 33 is fixedly provided with an alarm 32, the upper side of the machine body 10 is fixedly provided with a power supply 62, a lead 61 is connected between the power source 62 and the alarm 32, a starting device 70 for starting the equipment is arranged in the starting cavity 67, and a crushing device 71 for crushing small falling rocks is arranged in the crushing cavity 66.
Beneficially, a hydraulic cylinder 40 is fixedly arranged in the bevel plate 33, a hydraulic piston 41 is slidably connected in the hydraulic cylinder 40, a hydraulic rod 42 is fixedly arranged on the hydraulic piston 41, a hydraulic plate 43 is fixedly arranged on the upper side of the hydraulic rod 42, two first pin shafts 44 are hinged in the hydraulic plate 43, a side plate 45 is fixedly arranged on each first pin shaft 44, two front and back symmetrical side sliders 48 are slidably connected in the alarm 32, slider springs 49 are connected on the side sliders 48, a rotating block 47 is fixedly arranged on each side slider 48, a second pin shaft 46 is hinged between each rotating block 47 and the corresponding side plate 45, and a hydraulic pipe is connected between the hydraulic pump 23 and the hydraulic cylinder 40, so that when the hydraulic pump 23 is started, the hydraulic piston 41 is pushed, the hydraulic rod 42 and the hydraulic plate 43 are lifted, and the side plates 45 are driven to lift, the side plates 45 rotate on the hydraulic plate 43 and the rotating block 47 to drive the side slide blocks 48 to slide, the slide block springs 49 are compressed, the two side plates 45 form a triangular cone shape, falling rocks roll to the sides, when the falling rocks fall onto the bearing plate 31, the damping springs 37 and the damping springs 28 form buffering, the bearing column 35 slides downwards in the fixed column 34, the sealing piston 25 slides downwards in the sealing cylinder 24 to slow down the falling rocks, and the bearing plate 31 and the cone angle plate 33 can slide forwards, backwards, leftwards and rightwards, so that the falling rocks fall energy is reduced.
Advantageously, the actuating device 70 includes a fixed sleeve 54 fixedly installed on the lower side wall of the actuating chamber 67, two conductive holes 63 are provided in the fixed sleeve 54, a contact plate 59 is slidably connected in the conductive holes 63, a contact spring 60 is connected on the contact plate 59, a wire 61 is fixedly provided on the contact plate 59, the wire 61 is connected to the power source 62, rotation chambers 64 are respectively provided on the front and rear sides of the actuating chamber 67, a link shaft 52 is rotatably connected between the rotation chambers 64 and the actuating chamber 67, a baffle link 51 is fixedly provided on the link shaft 52 in the rotation chamber 64, a shaft torsion spring 53 connected to the link shaft 52 is fixedly provided on each of the front and rear side walls of the rotation chamber 64, an actuating baffle 50 is fixedly provided on two baffle links 51, a rotating screw 55 is fixedly provided in the link shaft 52, and a connecting rod 57 is slidably connected on the rear side wall of the actuating chamber 67, set firmly on the connecting rod 57 with rotate the fixed swivel nut 56 of screw rod 55 threaded connection, set firmly two electrode rod 58 on the fixed swivel nut 56, the control of power 62 main motor 11 with the hydraulic pump 23 starts to when the falling rocks whereabouts, the falling rocks striking start baffle 50, make start baffle 50 rotates, makes connecting rod pivot 52 rotates, drives rotate screw rod 55 and rotate, make fixed swivel nut 56 removes, electrode rod 58 gets into in the electrically conductive hole 63, with contact plate 59 contacts, the switch-on circuit, siren 32 warning, main motor 11 with the hydraulic pump 23 starts, pivot torsional spring 53 makes start baffle 50 resets, makes main motor 11 with the hydraulic pump 23 outage is closed.
Advantageously, the crushing device 71 comprises a main motor 11 fixedly installed at the lower side of the crushing cavity 66, the main motor 11 is in power connection with a motor shaft 12, a first bevel gear 13 is fixedly installed on the motor shaft 12, a driving rotating shaft 15 is rotatably connected to the rear side wall of the crushing cavity 66, a second bevel gear 14 meshed with the first bevel gear 13 is fixedly installed at the front side of the driving rotating shaft 15, a crushing wheel 16 is fixedly installed in the driving rotating shaft 15, fixed teeth 17 are respectively fixedly installed at the front side wall and the rear side wall of the crushing cavity 66, crushing teeth 19 are fixedly installed on the crushing wheel 16, side teeth 18 are fixedly installed at the side surface of the crushing wheel 16, a fixed plate 21 is fixedly installed at the lower side wall of the crushing cavity 66, a bottom plate tooth 22 is fixedly installed on the fixed plate 21, an inlet opening 20 is installed at the upper side of the crushing cavity 66, so that when falling rocks, small falling rocks hit the starting baffle 50, entering the crushing cavity 66, the main motor 11 is started, the motor shaft 12 rotates to drive the first bevel gear 13 and the second bevel gear 14 to rotate, the crushing wheel 16 rotates, the crushing teeth 19 and the bottom plate teeth 22 shear mutually, the side teeth 18 and the fixed teeth 17 shear mutually, stones are crushed, and large falling stones cross the starting baffle 50 to the bearing plate 31.
In the initial state, the power source 62, the main motor 11, and the hydraulic pump 23 are not activated, and the electrode rod 58 is separated from the contact plate 59.
When the work is started, after the hydraulic pump 23 is started, the hydraulic piston 41 is pushed, the hydraulic rod 42 and the hydraulic plate 43 are lifted to drive the side plate 45 to lift, the side plate 45 rotates on the hydraulic plate 43 and the rotating block 47 to drive the side slide block 48 to slide, the slide block spring 49 is compressed, the two side plates 45 form a triangular cone shape, the falling rocks roll to the side, when the falling rocks fall onto the bearing plate 31, the damping spring 37 and the damping spring 28 form a buffer, the bearing column 35 slides downwards in the fixed column 34, the sealing piston 25 slides downwards in the sealing cylinder 24 to slow down the falling rocks falling speed, the bearing plate 31 and the taper angle plate 33 can slide back and forth and left and right, the falling rocks falling energy is reduced, when the falling rocks fall, the falling rocks impact the starting baffle 50 to rotate the connecting rod rotating shaft 52 to drive the rotating screw 55 to rotate, the fixing threaded sleeve 56 to move, the electrode rod 58 enters the conductive hole 63, when the main motor 11 and the hydraulic pump 23 are turned off, the small falling rocks hit the starting baffle 50 and roll into the inlet port 20 to enter the crushing cavity 66, the main motor 11 is started, the motor shaft 12 rotates to drive the first bevel gear 13 and the second bevel gear 14 to rotate, the crushing wheel 16 rotates, the crushing teeth 19 and the bottom plate teeth 22 shear with each other, the side teeth 18 and the fixed teeth 17 shear with each other, and the large falling rocks pass over the starting baffle 50 to the bearing plate 31.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (4)
1. The utility model provides a railway tunnel portal prevents equipment of falling rocks, includes organism and two fixed columns, its characterized in that: a buffer cavity is arranged in the machine body, a crushing cavity is arranged on the upper side of the machine body, a starting cavity is arranged on the upper side of the buffer cavity, a conical tooth cavity is arranged on the front side of the crushing cavity, and a protective device for buffering falling rocks is arranged in the buffer cavity; the protection device comprises a hydraulic pump fixedly arranged on the lower side of the machine body, a bearing column is connected in each fixing column in a sliding manner, a bearing spring is connected between each fixing column and the corresponding bearing column, two sealing cylinders which are symmetrical front and back are fixedly arranged on the lower side wall of the buffer cavity, a sealing piston is connected in each sealing cylinder in a sliding manner, a piston spring is connected between each sealing piston and the lower side wall of each sealing cylinder, a sealing rod is fixedly arranged on each sealing piston, a fixing slide block is fixedly arranged on the upper side of each bearing column, a bearing plate is connected on the upper side of each bearing column and the upper side of each sealing rod in a sliding manner, four first springs are connected between each bearing plate and the corresponding fixing slide block, four fixing rings are fixedly arranged on each sealing rod, a second spring is connected between each fixing ring and the corresponding bearing plate, and a damping spring, a buffer spring is connected between the bearing plate and each sealing cylinder, a conical angle plate is fixedly arranged in the two bearing plates, an alarm is fixedly arranged on the lower side of the conical angle plate, a power supply is fixedly arranged on the upper side of the machine body, and a lead is connected between the power supply and the alarm; the starting cavity is internally provided with a starting device of the starting equipment, and the crushing cavity is internally provided with a crushing device for crushing small falling rocks.
2. The apparatus for preventing falling rocks at a railway tunnel portal according to claim 1, wherein: the hydraulic cylinder is fixedly arranged in the conical angle plate, a hydraulic piston is connected to the hydraulic cylinder in a sliding mode, a hydraulic rod is fixedly arranged on the hydraulic piston, a hydraulic plate is fixedly arranged on the upper side of the hydraulic rod, two first hinge pins are hinged to the hydraulic plate, a side plate is fixedly arranged on each first hinge pin, two side sliders which are symmetrical in the front and back direction are connected to the alarm in a sliding mode, slider springs are connected to the side sliders, rotating blocks are fixedly arranged on the side sliders, second hinge pins are hinged between the rotating blocks and the side plates, and hydraulic pipes are connected between the hydraulic pump and the hydraulic cylinder.
3. The apparatus for preventing falling rocks at a railway tunnel portal according to claim 1, wherein: the starting device comprises a fixed sleeve fixedly arranged on the lower side wall of the starting cavity, two conductive holes are arranged in the fixed sleeve, a contact plate is connected in the conductive holes in a sliding manner, a contact spring is connected on the contact plate, a lead is fixedly arranged on the contact plate and is connected with the power supply, rotary cavities are respectively arranged on the front side and the rear side of the starting cavity, a connecting rod rotating shaft is rotatably connected between the rotary cavities and the starting cavity, baffle connecting rods are fixedly arranged on the connecting rod rotating shaft in the rotary cavities, a rotating shaft torsion spring connected with the connecting rod rotating shaft is fixedly arranged on the front side wall and the rear side wall of each rotary cavity respectively, starting baffles are fixedly arranged on the two baffle connecting rods, a rotary screw rod is fixedly arranged in the connecting rod rotating shaft, a connecting rod is slidably connected on the rear side wall of the starting cavity, and a fixed screw sleeve in, two electrode rods are fixedly arranged on the fixed screw sleeve, and the power supply controls the main motor and the hydraulic pump to be started.
4. The apparatus for preventing falling rocks at a railway tunnel portal according to claim 1, wherein: the crushing device comprises a main motor fixedly mounted on the lower side of the crushing cavity, the main motor is in power connection with a motor shaft, a first bevel gear is fixedly arranged on the motor shaft, a driving rotating shaft is rotatably connected to the rear side wall of the crushing cavity, a second bevel gear meshed with the first bevel gear is fixedly arranged on the front side of the driving rotating shaft, a crushing wheel is fixedly arranged in the driving rotating shaft, fixing teeth are fixedly arranged on the front side wall and the rear side wall of the crushing cavity respectively, crushing teeth are fixedly arranged on the crushing wheel, side teeth are fixedly arranged on the side face of the crushing wheel, a fixing plate is fixedly arranged on the lower side wall of the crushing cavity, bottom plate teeth are fixedly arranged on the fixing plate, and an inlet is formed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496768.8A CN111608681B (en) | 2020-06-03 | 2020-06-03 | Equipment for preventing falling rocks at railway tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496768.8A CN111608681B (en) | 2020-06-03 | 2020-06-03 | Equipment for preventing falling rocks at railway tunnel portal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111608681A true CN111608681A (en) | 2020-09-01 |
| CN111608681B CN111608681B (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010496768.8A Active CN111608681B (en) | 2020-06-03 | 2020-06-03 | Equipment for preventing falling rocks at railway tunnel portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111608681B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562610A (en) * | 2021-07-20 | 2021-10-29 | 南京正隆顺达高分子材料有限公司 | Tunnel is prevented throwing and is filled up |
| CN113876254A (en) * | 2021-11-01 | 2022-01-04 | 江西太空机器人科技有限公司 | Robot of sweeping floor based on 5G communication |
| CN115058939A (en) * | 2022-05-18 | 2022-09-16 | 湖北工业大学 | Tunnel portal anti-icing device |
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| CN204572000U (en) * | 2015-01-22 | 2015-08-19 | 西南交通大学 | A kind of hole booth structure for bridge tunnel binding site protection rockfall |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562610A (en) * | 2021-07-20 | 2021-10-29 | 南京正隆顺达高分子材料有限公司 | Tunnel is prevented throwing and is filled up |
| CN113562610B (en) * | 2021-07-20 | 2022-07-12 | 南京正隆顺达高分子材料有限公司 | Tunnel is prevented throwing and is filled up |
| CN113876254A (en) * | 2021-11-01 | 2022-01-04 | 江西太空机器人科技有限公司 | Robot of sweeping floor based on 5G communication |
| CN115058939A (en) * | 2022-05-18 | 2022-09-16 | 湖北工业大学 | Tunnel portal anti-icing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111608681B (en) | 2020-12-18 |
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