CN103419809A - Self-braking inclined shaft catcher - Google Patents
Self-braking inclined shaft catcher Download PDFInfo
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- CN103419809A CN103419809A CN2013101830344A CN201310183034A CN103419809A CN 103419809 A CN103419809 A CN 103419809A CN 2013101830344 A CN2013101830344 A CN 2013101830344A CN 201310183034 A CN201310183034 A CN 201310183034A CN 103419809 A CN103419809 A CN 103419809A
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- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 210000003746 feather Anatomy 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 13
- 230000008719 thickening Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007257 malfunction Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses a self-braking inclined shaft catcher, and belongs to the technical field of braking devices for inclined shaft rail cars. The self-braking inclined shaft catcher mainly comprises a frame, a braking device, a main pull rod device and a pendulum device. A braking rod contacts with a rail to realize braking under the action of an extension spring through change of the tension of a load cable in sliding. The self-braking inclined shaft catcher is mainly applicable to braking the rail cars in an inclined shaft sliding accident, the braking device has a self-locking function, braking effects and safety are better, the pendulum device can prevent malfunction of the braking device at upper and lower grade change points, and the self-braking inclined shaft catcher is higher in applicability and stability.
Description
Technical field
The present invention relates to slope track vehicle brake technical field, relate in particular to a kind of self-retention anti-running device for incline, be applicable to mine inclined Lifting Convey.
Background technology
Colliery gradient tunnel Lifting Convey operation is the important step in Safety of Coal Mine Production, and in many middle-size and small-size mines, the gradient tunnel rail transport is still mainly transported as it, at large-scale mine, a lot of rail transport inclined gallery is also arranged.In actual tilt roadway rail transport production process, because the reasons such as the bunching coupling of vehicles is bad, traction steel wire fracture of rope cause derailing accident, to colliery, produce and caused great personal casualty and economic loss." safety of coal mines regulation " requirement must be provided with catcher in the gradient tunnel rail transport of colliery for this reason.
Existing buffer stop is mainly to be fixedly mounted in the inclined shaft tunnel, when derailing accident occurs, stops mine car by arrester or the net of keeping off a car it is braked, and as the patent No. 201220280163.6, title " buffer stop " is exactly wherein a kind of.This type of buffer stop is by various detecting devices, as radar Sensor monitoring device, photoelectric sensing apparatus and speed sensor etc., the installation and maintenance cost of equipment is higher, at some in longer inclined shaft, also need to install the buffer stop more than three, this has more increased cost of installation and maintenance cost.In addition, also have a class buffer stop, this type of protective device is that brake equipment is installed on to rail vehicle (as slope vehicle, inclined shaft skip, man car) upper, brake equipment moves with rail vehicle, when derailing accident occurs, can be braked by the brake equipment of self.As the patent No. 201020256664.1, title " the instant catcher of a kind of slope vehicle/skip bucket ", this patent, on the rear vehicle shaft of mine car/skip bucket and front truck wheel shaft, arrester hook is housed or pawl is inserted in braking, during by sport car, the traction steel wire rope tension reduces suddenly as speed-slackening signal, touch catcher and make arrester hook or the slotting pawl of braking catch or insert sleeper, prevent the generation of mine car/skip bucket derailing accident.For example the patent No. is 201120257658.2 again, title " active safe mine vehicle braking device ", this patent is comprised of overspeed inductor, latch, extension spring, locating piece, Compress Spring, L-type arc hook, center cross actuator, drive sprocket, chain, driven sprocket and drg, speed increase during by sport car makes overspeed inductor touch a series of mechanisms, makes drg action braking mine car.The patent No. 200910204943.5 for another example, name is called " inclined roadway anti-running car tramcar ", its technology adopted is that brake equipment is installed on tramcar wheel, while utilizing sport car, vehicle wheel rotational speed increases, slide block is along the slideway upward sliding in wheel, wedge between eccentric brake wheel and wheel slideway, make between wheel and eccentric wheel to produce enough friction force, thus the locking wheel braking.
The above-mentioned brake equipment be installed on rail vehicle respectively has its characteristic, but is considering under actual conditions, the above-mentioned design part that also comes with some shortcomings.For example, mine car is through upper and lower grade change point the time, and rope traction power will significant change occur and easily produce misoperation; Do not take into full account the constructional feature of existing mine car, larger to the change of mine car, thus the cost brought increases; Self-locking mechanism is not set, and braking effect can not get fully guarantee etc.
Summary of the invention
In order to improve the safety of slope track car, sport car is implemented to reliable and effective braking, the invention provides a kind of self-retention anti-running device for incline, the variation of traction steel wire rope tension during by sport car makes brake rod contact and be braked with track under the effect of extension spring.This catcher is improved existing mine car, reduces as far as possible its use cost, adopts self-locking mechanism on stop mechanism, and brake safe is reliable.In addition, the present invention has also designed the mechanism prevented in the grade change point misoperation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of self-retention anti-running device for incline mainly is comprised of vehicle frame, brake equipment, main tie device and pendulum hookup.Vehicle frame is the skeleton that wagon box, brake equipment, main tie device and pendulum hookup are installed, described vehicle frame is welded by channel-section steel, front end at vehicle frame is welded with the main beam that bears the main tie pulling force, main beam is by two staggered relatively being welded of channel-section steel, and be provided with the mounting hole that main tie device and annex thereof are installed on it, the middle part of vehicle frame both sides curb girder bolt respectively is connected with the installation channel-section steel that brake equipment and annex thereof are installed, and mounting groove steel tank mouth direction is identical with car frame side beam channel-section steel direction.
Brake equipment is core of the present invention, and described brake equipment is comprised of brake rod, bearing pin, brake rod connecting rod, tranverse connecting rod, brake rod extension spring and spring fitting bar.Brake rod is installed on described installation channel-section steel by bearing pin, and brake rod can rotate around bearing pin, and brake rod and track contact segment are cast with rubber layer.Spring fitting bar bolt is connected on the installation channel-section steel of both sides, and brake rod extension spring one end is arranged on the spring fitting bar, and the other end is installed on brake rod, and brake rod connecting rod and brake rod chain connection, be fixed it by spring cotter.When sport car occurs, rope traction power reduces, and the brake rod extension spring retracts brake rod, and brake rod stretches and tightens track to the both sides track.Suppose that brake rod and track angle are θ, brake rod rubber layer and interorbital friction coefficient are μ, and when meeting μ>cot θ, the mutual slip of brake rod and track stops and self-locking, thus can be by rail vehicle braking that derailing accident occurs in orbit.
Described main tie device one end is connected with haulage cable with safety pin by meeting and discussing, and the other end is connected with described brake equipment, and the main tie device is comprised of main tie, orienting sleeve, feather key, feather key plate, stop screw, big nut and thickening pad.The orienting sleeve bolt is connected on the front cross rail of vehicle frame, and main tie inserts in orienting sleeve and can slide along orienting sleeve, and big nut and thickening pad are threadedly connected to an end of main tie, and the thickening pad contacts with described vehicle frame main beam.Main tie is provided with the radially circular hole that the brake equipment tranverse connecting rod is installed at the big nut end, the tranverse connecting rod of described brake equipment inserts in the radially circular hole of main tie, and is connected with the brake rod connecting rod of brake equipment.Be provided with feather key on described main tie, the feather key crab bolt is connected on the vehicle frame main beam, and feather key and feather key plate bearing fit guarantee moving axially of main tie.Stop screw is installed on main tie, and coordinates with described pendulum hookup.
In described pendulum hookup installation and vehicle frame main beam, it comprises weight, weight erecting frame, straight positioning plate and Z-type positioning plate.The weight erecting frame is arranged in the vehicle frame main beam with bolt, and weight is arranged on the weight erecting frame with bearing pin, and straight positioning plate is inserted on weight, and the direction of weight is always vertical direction.When pendulum hookup can prevent that rail vehicle from entering gallery by inclined gallery, rope traction power changes the misoperation that causes brake equipment.Specifically, when horizontal rail, weight is perpendicular to track, and straight positioning plate is near the stop screw on main tie, and under the stopping of stop screw and Z-type positioning plate, main tie can not make the brake equipment action; When inclined shaft, weight swing to keep vertical direction, now the stop screw on straight positioning plate and main tie away from, stop screw does not play position-limiting action, main tie can make brake equipment move.
The invention has the beneficial effects as follows, brake equipment has the function of self-locking, and braking effect and safety are better, and pendulum hookup can prevent the misoperation of brake equipment at upper and lower grade change point, and applicability and stability are stronger.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 is front view of the present invention.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is the birds-eye view of the present invention while braking.
Fig. 4 is the lateral plan of the present invention while braking.
Fig. 5 is the front view of main tie device of the present invention and pendulum hookup.
Fig. 6 is the birds-eye view of main tie device of the present invention and pendulum hookup.
Fig. 7 is main tie device of the present invention and the front view of pendulum hookup when inclined shaft.
1. main tie devices, 2. pendulum hookup, 3. wagon box in figure, 4. brake equipment, it is right 5. to take turns, 6. vehicle frame, 7. track, 11. orienting sleeves, 12. main ties, 13. the feather key plate, 14. thickening pads, 15. big nuts, 21. stop screw, 22. straight positioning plates, 23.Z type positioning plate, 24. weight, 41. tranverse connecting rods, 42. brake rod connecting rods, 43. brake rod, 44. bearing pins, 45. brake rod extension springs, 46. the spring fitting bar, 47. rubber gaskets, 61. front cross rails, 62. main beam, 63. intermediate transverse girder, 64. curb girders, 65. after cross members.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, self-retention anti-running device for incline of the present invention mainly is comprised of vehicle frame 6, brake equipment 4, main tie device 1 and pendulum hookup 2, and wagon box 3 is installed on vehicle frame 6, for different rail vehicles, as inclined shaft skip, man car or stores van etc., wagon box 3 can be different.Brake equipment 4 is installed on the bottom of vehicle frame 6, and main tie device 1 and pendulum hookup 2 are installed on the front end of vehicle frame 6, and the rail vehicle that brake equipment 4, main tie device 1 and pendulum hookup 2 are installed travels on track 7.
As shown in Figure 2, for the ease of expressing its inner structure, then this is by wagon box 3 removals, and it has been carried out to semi-sictional view.Vehicle frame 6 is welded by channel-section steel, the front end of vehicle frame 6 is welded with the main beam 62 that bears the main tie pulling force, curb girder 64, front-axle beam 61, after cross member 65, intermediate transverse girder 63 are welded to form vehicle frame 6 together with main beam 62, described main beam 62 is by two staggered relatively being welded of channel-section steel, and be provided with the mounting hole that main tie device 1 and annex thereof are installed on it, the middle part of vehicle frame both sides curb girder 64 bolt respectively is connected with the installation channel-section steel that brake equipment 4 and annex thereof are installed, and mounting groove steel tank mouth direction is identical with car frame side beam 64 channel-section steel directions.Described brake equipment 4 is comprised of brake rod 43, bearing pin 44, brake rod connecting rod 42, tranverse connecting rod 41, brake rod extension spring 45 and spring fitting bar 46.Brake rod 43 middle parts are designed with mounting hole, and bearing pin 44 coordinates and locates with circular nut with the mounting hole of brake rod 43.Be welded with the location plectane that brake rod extension spring 45 is installed on spring fitting bar 46, brake rod extension spring 45 1 ends hook on spring fitting bar 46, and an end hooks on the montant of brake rod 43, and brake rod extension spring 45 provides the initial braking force of brake equipment 4.Main tie device 1 is by tranverse connecting rod 41 and brake rod connecting rod 42 and brake rod 43 chain connections.As figure, under the pulling of main tie device 1, brake rod 43 separates with track 7, and rail vehicle is in normal running state.
As shown in Figure 3, Figure 4, when because of reasons such as the bunching vehicle is bad because even hanging, traction steel wire fracture of rope, causing sport car, 1 pulling force of main tie device reduces, under the pulling force effect of brake rod extension spring 45, main tie device 1 retraction, brake rod 43 is near track 7 chucking of both sides, angle between known brake rod 43 and track 7 is θ, brake rod 43 is μ with interorbital friction coefficient, supposes that it is F that brake rod 43 is subject to the track squeese pressure, is decomposed into F along the power F of track 7 directions
yWith the power F perpendicular to track alignment
x, by mechanical knowledge, obtain F
x=Fsin θ, F
y=Fcos θ, F
xThe friction force produced is F
f=μ F
x=μ Fsin θ, work as F
f>F
yThe time brake equipment 4 and track 7 between self-locking, arrange during μ>cot θ, thus can be by rail vehicle braking that derailing accident occurs in orbit.Under actual conditions, angle is that θ should be less than 90 °, the coefficientoffrictionμ increased between brake rod 43 and track 7 can reduce the safety factor that angle improves brake equipment 4, for increasing coefficientoffrictionμ, adopt known technology to be cast with rubber gasket 47 at brake rod 43 and the contact jaw of track 7.
As Fig. 5, shown in Fig. 6, Fig. 7, pull rod device 1 is comprised of main tie 12, orienting sleeve 11, feather key 16, feather key plate 13, stop screw 21, big nut 15 and thickening pad 14.Orienting sleeve 11 bolts are connected on the front cross rail 61 of vehicle frame, main tie 12 inserts in orienting sleeve 11 and can endwisely slip along orienting sleeve, in order to reduce friction, be added with grease lubrication between main tie 12 and orienting sleeve 11, big nut 15 and thickening pad 14 are threadedly connected to an end of main tie 12, thickening pad 14 contacts with described vehicle frame main beam 62, and thickening pad 14 contacts the pulling force of direct bearing track car operation with main beam 62.Main tie 12 is provided with the radially circular hole that tranverse connecting rod 41 is installed at the big nut end, the tranverse connecting rod 41 of described brake equipment 4 inserts in the radially circular hole of main tie 12, and is connected with the brake rod connecting rod 42 of brake equipment 4.Be provided with feather key 16 on described main tie 12, feather key plate 13 bolts are connected on vehicle frame main beam 62, feather key 16 guarantees moving axially of main ties 12 with feather key plate 13 bearing fits, the length of feather key 16 according to main tie 12 sliding stroke orienting sleeve 11 in definite.On stop screw 21 installations and main tie 12, and coordinate with described pendulum hookup 2.In described pendulum hookup 2 installations and vehicle frame main beam 62, it comprises weight 24, weight erecting frame (not marking in figure), straight positioning plate 22 and Z-type positioning plate 23.The weight erecting frame is arranged in vehicle frame main beam 62 with bolt, weight 24 use bearing pins are arranged on the weight erecting frame, straight positioning plate 22 is inserted on weight 24, and weight 24 can swing on the weight erecting frame, in the direction of the effect lower heavy punch 24 of gravity, is always vertical direction.When pendulum hookup 2 can prevent that rail vehicle from entering gallery by inclined gallery, rope traction power changes the misoperation that causes brake equipment 4.Specifically, when horizontal rail (state shown in Fig. 5), weight 24 is perpendicular to track 7, and straight positioning plate 22 is near the stop screw 21 on main tie 12, and under the stopping of stop screw 21 and Z-type positioning plate 23, main tie 12 can not make brake equipment 4 actions; When inclined shaft (state shown in Fig. 7), swing to vertical direction at Action of Gravity Field lower heavy punch 24, now the stop screw 21 on straight positioning plate 22 and main tie 12 away from, 21 pairs of main ties 12 of stop screw do not play position-limiting action, main tie can make brake equipment 4 actions.
The operational process of self-retention anti-running device for incline of the present invention is as follows: in normal course of operation, main tie 12 is all the time in extended state, the released state of brake rod 43 maintenance and track 7 under the pulling of main tie 12, by way of upper and lower grade change point the time, although the traction steel wire rope tension reduces, but, due to the position-limiting action of pendulum hookup 2, can actv. prevent the misoperation of brake equipment 4; When the reasons such as the bunching vehicle is bad because even hanging, traction steel wire fracture of rope cause sport car, the pulling force of haulage cable reduces, under the pulling force effect of brake rod extension spring 45, main tie 12 is retracted, brake rod 43 contacts with track 7 and effective self-locking and braking rail vehicle.In whole process, 45 conducts of brake rod extension spring provide the starting force of brake rod 43 actions, and the self-locking of whole brake equipment 4 is that the deadweight of rail vehicle produces.
Above embodiment description taken together with the accompanying drawings, just illustrate groundwork of the present invention, principal character.The technical personnel of relevant industries should be understood; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; do not breaking away under the prerequisite the invention is intended to scope; the present invention also has various changes and modifications, and these changes and improvements all are included in claimed scope.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (4)
1. a self-retention anti-running device for incline, mainly by vehicle frame, brake equipment, main tie device and pendulum hookup, formed, it is characterized in that: described vehicle frame is welded by channel-section steel, front end at vehicle frame is welded with the main beam that bears the main tie pulling force, main beam is by two staggered relatively being welded of channel-section steel, and be provided with the mounting hole that main tie device and annex thereof are installed on it, the middle part of vehicle frame both sides curb girder bolt respectively is connected with the installation channel-section steel that brake equipment and annex thereof are installed, and mounting groove steel tank mouth direction is identical with car frame side beam channel-section steel direction.
2. a kind of braking anti-running device for incline according to claim 1, it is characterized in that: described brake equipment is by brake rod, bearing pin, the brake rod connecting rod, tranverse connecting rod, brake rod extension spring and spring fitting bar form, brake rod is installed on described installation channel-section steel by bearing pin, and brake rod can rotate around bearing pin, brake rod and track contact segment are cast with rubber layer, spring fitting bar bolt is connected on the installation channel-section steel of both sides, brake rod extension spring one end is arranged on the spring fitting bar, the other end is installed on brake rod, brake rod connecting rod and brake rod chain connection, by spring cotter, it is fixed.
3. a kind of braking anti-running device for incline according to claim 1, it is characterized in that: described main tie device one end is connected with haulage cable with safety pin by meeting and discussing, the other end is connected with described brake equipment, the main tie device is by main tie, orienting sleeve, feather key, the feather key plate, stop screw, big nut and thickening pad form, the orienting sleeve bolt is connected on the front cross rail of vehicle frame, main tie inserts in orienting sleeve and can slide along orienting sleeve, big nut and thickening pad are threadedly connected to an end of main tie, the thickening pad contacts with described vehicle frame main beam, main tie is provided with the radially circular hole that the brake equipment tranverse connecting rod is installed at the big nut end, the tranverse connecting rod of described brake equipment inserts in the radially circular hole of main tie, and is connected with the brake rod connecting rod of brake equipment, be provided with feather key on described main tie, the feather key crab bolt is connected on the vehicle frame main beam, and feather key and feather key plate bearing fit guarantee moving axially of main tie, and stop screw is installed on main tie, and coordinates with described pendulum hookup.
4. a kind of braking anti-running device for incline according to claim 1, it is characterized in that: in pendulum hookup installation and vehicle frame main beam, it comprises weight, weight erecting frame, straight positioning plate and Z-type positioning plate, the weight erecting frame is arranged in the vehicle frame main beam with bolt, weight is arranged on the weight erecting frame with bearing pin, and straight positioning plate is inserted on weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183034.4A CN103419809B (en) | 2013-05-10 | 2013-05-10 | Self-retention anti-running device for incline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183034.4A CN103419809B (en) | 2013-05-10 | 2013-05-10 | Self-retention anti-running device for incline |
Publications (2)
| Publication Number | Publication Date |
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| CN103419809A true CN103419809A (en) | 2013-12-04 |
| CN103419809B CN103419809B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310183034.4A Expired - Fee Related CN103419809B (en) | 2013-05-10 | 2013-05-10 | Self-retention anti-running device for incline |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284525A (en) * | 2020-03-31 | 2020-06-16 | 永贵能源开发有限责任公司新田煤矿 | Colliery anti-sliding device |
| CN111959558A (en) * | 2020-07-23 | 2020-11-20 | 中国煤炭科工集团太原研究院有限公司 | Rope-breaking rail-holding braking protection device for coal mine underground ferry vehicle |
| CN112207096A (en) * | 2020-09-26 | 2021-01-12 | 宜宾学院 | A pig speed shock suppression mechanism |
| CN108433752B (en) * | 2018-01-15 | 2021-01-12 | 温州市人民医院 | Stomach cancer holostrome sample sampler |
| CN113236350A (en) * | 2021-06-16 | 2021-08-10 | 无锡市市政设施建设工程有限公司 | Inclined shaft transportation structure for subway construction |
| CN113931684A (en) * | 2021-11-20 | 2022-01-14 | 中铁建大桥工程局集团第五工程有限公司 | Material transportation equipment for large-inclination-angle tunnel |
| CN115973386A (en) * | 2023-03-21 | 2023-04-18 | 海南坤联科技有限公司 | Manned sightseeing cable car under water |
| CN117325902A (en) * | 2023-12-01 | 2024-01-02 | 湘潭恒欣实业股份有限公司 | Anti-galloping car stopping device of monorail crane and safety protection method |
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| CN2106762U (en) * | 1991-09-12 | 1992-06-10 | 刘欣福 | Automatic braking apparatus for running vehicles in incline shaft |
| JPH11198810A (en) * | 1998-01-16 | 1999-07-27 | Aichi Corp | Orbital vehicle braking system |
| CN101786469A (en) * | 2010-03-17 | 2010-07-28 | 云南力帆骏马车辆有限公司 | Dump truck auxiliary frame and connecting structure thereof |
| CN201980248U (en) * | 2011-04-01 | 2011-09-21 | 卢月雄 | Catcher for mine cars/skip buckets in inclined shaft |
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| CN203237254U (en) * | 2013-05-10 | 2013-10-16 | 金力 | Self-braking inclined shaft catcher |
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2013
- 2013-05-10 CN CN201310183034.4A patent/CN103419809B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106762U (en) * | 1991-09-12 | 1992-06-10 | 刘欣福 | Automatic braking apparatus for running vehicles in incline shaft |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433752B (en) * | 2018-01-15 | 2021-01-12 | 温州市人民医院 | Stomach cancer holostrome sample sampler |
| CN111284525A (en) * | 2020-03-31 | 2020-06-16 | 永贵能源开发有限责任公司新田煤矿 | Colliery anti-sliding device |
| CN111959558A (en) * | 2020-07-23 | 2020-11-20 | 中国煤炭科工集团太原研究院有限公司 | Rope-breaking rail-holding braking protection device for coal mine underground ferry vehicle |
| CN112207096A (en) * | 2020-09-26 | 2021-01-12 | 宜宾学院 | A pig speed shock suppression mechanism |
| CN112207096B (en) * | 2020-09-26 | 2021-10-29 | 宜宾学院 | A pig speed shock restraining mechanism |
| CN113236350A (en) * | 2021-06-16 | 2021-08-10 | 无锡市市政设施建设工程有限公司 | Inclined shaft transportation structure for subway construction |
| CN113931684A (en) * | 2021-11-20 | 2022-01-14 | 中铁建大桥工程局集团第五工程有限公司 | Material transportation equipment for large-inclination-angle tunnel |
| CN113931684B (en) * | 2021-11-20 | 2024-01-26 | 中铁建大桥工程局集团第五工程有限公司 | Material conveying equipment for large-dip-angle tunnel |
| CN115973386A (en) * | 2023-03-21 | 2023-04-18 | 海南坤联科技有限公司 | Manned sightseeing cable car under water |
| CN117325902A (en) * | 2023-12-01 | 2024-01-02 | 湘潭恒欣实业股份有限公司 | Anti-galloping car stopping device of monorail crane and safety protection method |
| CN117325902B (en) * | 2023-12-01 | 2024-02-13 | 湘潭恒欣实业股份有限公司 | Anti-galloping car stopping device of monorail crane and safety protection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103419809B (en) | 2016-01-27 |
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