CN215672276U - Safety protection device for underground mine - Google Patents

Safety protection device for underground mine Download PDF

Info

Publication number
CN215672276U
CN215672276U CN202120531173.1U CN202120531173U CN215672276U CN 215672276 U CN215672276 U CN 215672276U CN 202120531173 U CN202120531173 U CN 202120531173U CN 215672276 U CN215672276 U CN 215672276U
Authority
CN
China
Prior art keywords
mine car
mine
plate
rod
top surface
Prior art date
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.)
Expired - Fee Related
Application number
CN202120531173.1U
Other languages
Chinese (zh)
Inventor
王九存
杨建斌
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.)
Hainan Shanjin Mining Co ltd
Original Assignee
Hainan Shanjin Mining 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 Hainan Shanjin Mining Co ltd filed Critical Hainan Shanjin Mining Co ltd
Priority to CN202120531173.1U priority Critical patent/CN215672276U/en
Application granted granted Critical
Publication of CN215672276U publication Critical patent/CN215672276U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a safety protection device for underground mines, which comprises a mine car track, wherein a mine car is arranged at the top of the mine car track, a lifting table is arranged on one side of the mine car, a lifting device is arranged in the middle of the bottom surface of the lifting table, telescopic rods are connected to four corners of the bottom of the lifting table, arc-shaped plates are hinged between adjacent telescopic rods, an inflator pump is arranged on the inner side of each arc-shaped plate, a switch button of the inflator pump corresponds to the inner side of each arc-shaped plate, the inflator pump is connected with an air bag fixed to the bottom surface of the lifting table through an air pipe, a working chamber is arranged on the top surface of the lifting table, a protection door is hinged to one side of the working chamber, a bearing plate is arranged on the top surface of the working chamber, an arc-shaped top plate is connected to the bottom of the bearing plate through bolts, and a damping device and a plurality of support columns positioned on two sides of the damping device are arranged between the top plate and the bearing plate. The utility model makes perfect protection design for the mine car and the lifting platform, and protects the personal safety of workers as much as possible.

Description

Safety protection device for underground mine
Technical Field
The utility model relates to the technical field of mine equipment safety, in particular to a safety protection device for a mine.
Background
In mines, the most important thing is the use of mine cars, so that goods and workers can be transported quickly, and a large amount of time and labor are saved.
Like patent No. CN202020624554.X discloses a safety device for mine, including the mine car track, mine car track top is equipped with the mine car, is equipped with spacing subassembly between mine car and the mine car track, and both sides are equipped with protective assembly, are located to be equipped with the elevating platform on the mine wall of mine car one side, and the elevating platform top is equipped with protective assembly, and this utility model discloses a freely rise and descend of elevating platform for the staff is in different level with the mine car, makes the mine car can not hit the staff, can play certain guard action.
However, the device has the following disadvantages: firstly, the device does not make perfect protection measures above the lifting platform, and the falling of the rock on the wall of the mine is likely to cause danger; secondly, the device is used for lifting the lifting platform and does not have perfect protection measures for the lifting device which plays a supporting role, when the mine car is derailed and collides with the lifting device, the lifting device is likely to be directly damaged, and even the lifting platform is directly collapsed; thirdly, the device also has no good measure for the overturning problem of the mine car after derailing, and can not avoid the overturning of the mine car, so that goods in the mine car are overturned out or personnel fall down from the mine car.
Based on the above, the utility model designs a safety protection device for underground mine to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a safety protection device for a mine well, which aims to solve the problems in the background technology.
In order to solve the technical problem, the utility model adopts the following scheme:
a safety protection device for underground mine comprises a mine car track, wherein a mine car is arranged at the top of the mine car track, a limiting block is arranged between the mine car and the mine car track, a lifting table is arranged on one side of the mine car, a lifting device is arranged on the bottom surface of the lifting table, telescopic rods are connected to four corners of the bottom of the lifting table and comprise an inner rod and an outer rod sleeved outside the inner rod, a plurality of corresponding through holes are formed in the outer surfaces of the inner rod and the outer rod, bolts are connected to the through holes in an internal thread manner, a fixing block is arranged at the bottom end of the outer rod and fixedly connected with the bottom surface of a mine wall through second screws, an arc plate covering the outer rod is hinged between the adjacent outer rods, an air bag connected with an inflator pump is fixed to the bottom surface of the lifting table, a switch button of the inflator pump is tightly attached to the inner side of the arc plate, a working chamber is arranged on the top surface of the lifting table, a protection door is hinged to one side of the working chamber, the working chamber is characterized in that a bearing plate is installed on the top surface of the working chamber, an arc-shaped top plate is connected to the bottom of the bearing plate through bolts, and a damping device and a plurality of support columns located on two sides of the damping device are arranged between the top plate and the bearing plate.
Preferably, elevating gear is including fixing the swivel nut in elevating platform bottom surface middle part, the spiro union has the screw rod that runs through the elevating platform in the swivel nut, the screw rod top is rotated and is connected with the stop collar of fixing on the elevating platform, the screw rod bottom is rotated and is connected with the turning block, the turning block passes through first screw and mine wall bottom fixed connection, the fixed cover in screw rod bottom is equipped with the bevel gear ring, the bevel gear ring meshing has bevel gear, bevel gear fixedly connected with motor, the motor bottom is fixed with the installation piece of installing in the mine wall of a well bottom.
Preferably, damping device includes the mounting panel, mounting panel top surface mid-mounting has inflatable bumper shock absorber, inflatable bumper shock absorber's right side is equipped with the inflating valve, inflatable bumper shock absorber top surface mounting has the blotter, the blotter top surface is fixed with a plurality of decompression springs, the bottom surface of mounting panel is equipped with the slipmat, first slipmat is fixed on the bearing plate top surface.
Preferably, the top surface cover of mine car is equipped with the rubber sleeve, all be equipped with a plurality of auxiliary stay devices on the side about the mine car, all there is the crashproof board through a plurality of second spring coupling on the front and back of mine car.
Preferably, the auxiliary supporting device comprises a supporting block, a connecting rod is connected to one side of the supporting block, a sleeve is sleeved on the outer surface of the connecting rod, a sliding block is connected to one end, away from the supporting block, of the connecting rod, the sliding block is located inside the sleeve, the other end of the sliding block is connected with a first spring, and the other end of the first spring is fixedly connected to one side of the mine car.
Preferably, the roof includes the steel layer, the laminating of steel layer inboard is connected with the rubble layer, the laminating of rubble layer inboard is connected with the rubber layer.
Preferably, the arc-shaped plate comprises a steel plate and a rubber plate, and the rubber plate is positioned on the inner side of the steel plate.
Preferably, the inner wall of the top of the working chamber is provided with an illuminating lamp.
The utility model has the following beneficial effects:
1. according to the utility model, the lifting platform can freely ascend and descend by arranging the lifting device and the telescopic rod, so that a worker and a mine car can be out of the same horizontal height, the personal safety of the worker is ensured, and the lifting device and the telescopic rod can well support the lifting platform.
2. According to the utility model, the arc-shaped plate is arranged, the outer rod of the telescopic rod is surrounded in the arc-shaped plate, the outer rod is protected, and when the mine car is derailed and collides with the telescopic rod, the arc-shaped plate can play a role in buffering and protecting, so that the telescopic rod is protected, and the lifting platform is prevented from collapsing.
3. According to the utility model, the inflator pump is arranged on the inner side of the arc-shaped plate, and the switch button of the inflator pump is opposite to the inner side of the arc-shaped plate, so that the arc-shaped plate is subjected to overweight impact, when the arc-shaped plate is deformed, the switch button can be pressed down through deformation, the inflator pump is started, the air bag is inflated, the phenomenon that the lifting platform collapses due to the fact that the telescopic rod is broken by collision without a support member due to overlarge impact is avoided, and the air bag can play a supporting role and a buffering role, so that workers on the lifting platform are protected.
4. According to the utility model, the bearing plate, the top plate, the supporting column and the damping device are arranged at the top of the working chamber, so that rocks on the wall of the mine can be prevented from falling to damage the working chamber and even injure workers, and meanwhile, the damping effect can be achieved, and the influence of falling rocks on the lifting device and the telescopic rod is reduced.
5. According to the mine car anti-collision device, the rubber sleeve is arranged on the top surface of the mine car, so that the anti-collision performance of the mine car can be improved, and goods in the mine car can be prevented from being toppled and scattered; the auxiliary supporting devices are arranged on the left side surface and the right side surface of the mine car, so that the mine car can play a certain supporting and balance restoring role when the mine car falls off the rail and is overturned; the anti-collision plates are arranged on the front surface and the rear surface of the mine car, so that the anti-collision performance of the mine car is enhanced, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the curved plate and the telescoping rod;
FIG. 3 is an enlarged schematic view of portion A;
FIG. 4 is an enlarged schematic view of the shock absorbing device;
FIG. 5 is a schematic left side view of the mine car;
FIG. 6 is an enlarged schematic view of the auxiliary support device;
FIG. 7 is an enlarged cross-sectional view of the top plate;
FIG. 8 is an enlarged cross-sectional view of an arcuate plate;
FIG. 9 is a schematic view of the through holes of the outer and inner rods;
fig. 10 is an enlarged schematic view of the stopper.
Reference numerals: a tramcar track-1, a tramcar-2, a shock absorption device-3, an anti-skid pad-301, a mounting plate-302, an inflatable shock absorber-303, a cushion pad-304, a decompression spring-305, an air valve-306, a rotating block-4, a first screw-5, a screw-6, an auxiliary supporting device-7, a sleeve-701, a first spring-702, a sliding block-703, a connecting rod-704, a supporting block-705, a motor-8, a bevel gear-9, a bevel gear-10, a screw sleeve-11, a lifting platform-12, a limiting sleeve-13, a second spring-14, a protective door-15, a working chamber-16, a bearing plate-17, a top plate-18, a steel layer-1801, a crushed stone layer-1802, a rubber layer-1803, The device comprises a support column-19, a rubber sleeve-20, an arc-shaped plate-21, a steel plate-2101, a rubber plate-2102, a bolt-22, an outer rod-23, an inner rod-24, an air bag-25, a through hole-26, a fixing block-27, an inflator pump-28, an anti-collision plate-29, a mounting block-30, a limiting block-31, a second screw-32 and a lighting lamp-33.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 to 10, a safety protection device for underground mine comprises a mine car track 1, a mine car 2 is arranged at the top of the mine car track 1, a limit block 31 is arranged between the mine car 2 and the mine car track 1, the structure is the same as that of the patent with the application number of CN202020624554.X, a lifting platform 12 is arranged at one side of the mine car 2, a lifting device is arranged in the middle of the bottom surface of the lifting platform 12, the lifting platform 12 can freely ascend and descend, so that a worker and the mine car 2 are not in the same horizontal plane, telescopic rods are fixedly connected to four corners of the bottom of the lifting platform 12, each telescopic rod comprises an inner rod 24 and an outer rod 23 sleeved outside the inner rod 24, a plurality of through holes 26 corresponding to each other are arranged on the outer surfaces of the inner rod 24 and the outer rod 23, bolts 22 penetrate through the through holes 26, the inner rod 24 extends along with the ascending of the lifting device, after the specific height is adjusted, the bolts 22 are inserted into the through holes 26 corresponding to the inner rod 24 and the outer rod 23, play a supporting role, make the elevating platform can be evenly atress, more firm, outer pole 23 bottom mounting is on fixed block 27 top surface, the bolt or welding all can, fixed block 27 passes through four second screws 32 and mine wall bottom surface fixed connection, it has the arc 21 that covers outer pole 23 to articulate between the adjacent outer pole 23, four total arc 21, the inboard of arc 21 is equipped with the pump 28 of fixing in the mine wall bottom surface, the shift knob of pump 28 corresponds with the inboard middle part of arc 21, pump 28 passes through the trachea and is connected with the gasbag 25 of fixing in elevating platform 12 bottom surface, this gasbag 25 can cover the whole bottom surface of elevating platform 12, the top surface of elevating platform 12 is equipped with studio 16, studio 16 one side articulates has protection door 15, provides a guard action, bearing plate 17 is installed to studio 16 top surface, the bottom area of bearing plate 17 is greater than the top surface area of studio 16, the bolted connection of the bottom of bearing plate 17 has curved roof 18, be equipped with damping device 3 and be located the many support columns 19 of damping device both sides between roof 18 and the bearing plate 17, damping device 3 is located the inboard middle part position of roof 18.
Specifically, elevating gear is including fixing the swivel nut 11 at 12 bottom surfaces of elevating platform middle parts, threaded connection has the screw rod 6 that runs through elevating platform 12 in the swivel nut 11, 6 tops of screw rod are rotated and are connected with the stop collar 13 of fixing on elevating platform 12, 6 bottom rotations of screw rod are connected with turning block 4, turning block 4 is through first screw 5 and mine wall bottom fixed connection, 6 bottom fixed sleeves of screw rod are equipped with bevel gear 10, bevel gear 10 meshes has bevel gear 9, bevel gear 9 fixedly connected with motor 8, 8 bottoms of motor are fixed with the installation piece 30 of installing in the mine wall bottom, and rotation through motor 8 drives bevel gear 9 and rotates, drives the rotation of bevel gear 10 again, controls screw rod 6 to rotate then, reaches the function that elevating platform 12 freely goes up and down.
Specifically, damping device 3 includes mounting panel 302, mounting panel 302 top surface mid-mounting has inflatable bumper shock absorber 303, inflatable bumper shock absorber 303's right side is equipped with inflating valve 306, inflatable bumper shock absorber 303 top surface mounting has blotter 304, blotter 304 top surface is fixed with a plurality of relief spring 305, mounting panel 302's bottom surface is equipped with slipmat 301, slipmat 301 is fixed on bearing plate 17 top surface, and this damping device 3 has set up the multilayer shock attenuation, and the shock attenuation effect is relatively good, can reduce the impact of falling rocks to elevating platform 12 and roof 18, and set up slipmat 301, increases damping device 3's steadiness, and bolted connection can be adopted to the mode that slipmat 301 and bearing plate 17 are connected.
Specifically, the top surface of the mine car 2 is sleeved with a rubber sleeve 20 for protecting the top surface of the mine car and protecting goods, the left and right side surfaces of the mine car 2 are respectively provided with a plurality of auxiliary supporting devices 7, each auxiliary supporting device 7 comprises a supporting block 705, one side of the supporting block 705 is connected with a connecting rod 704, the outer surface of the connecting rod 704 is sleeved with a sleeve 701, one end of the connecting rod 704, far away from the supporting block 705, is connected with a sliding block 703, the sliding block 703 is positioned inside the sleeve 701, the other end of the sliding block 703 is connected with a first spring 702, the other end of the first spring 702 is fixedly connected with one side of the mine car 2, when the mine car 2 is about to roll over, the first spring 702 supports the mine car 2 so that the mine car cannot completely roll over and can even keep the mine car 2 in a balanced state, and the front and back surfaces of the mine car 2 are connected with crash-proof plates 29 through a plurality of second springs 14, the anti-collision plate 29 is arranged, so that the front and the rear surfaces of the mine car 2 can be effectively protected.
Specifically, roof 18 includes steel layer 1801, the inboard laminating of steel layer 1801 is connected with rubble layer 1802, the inboard laminating of rubble layer 1802 is connected with rubber layer 1803, and steel layer 1801 can the furthest bear the impact of falling rock, increases resistance to compression crashworthiness, and rubble layer 1802 can further increase roof 18's impact resistance, and can play certain buffering dispersion impact's effect, and rubber layer 1803 is the last protective layer then, and it utilizes the deformation characteristic, can accomplish to cushion the impact force by deformation, and later the reuse nature is recovered.
Specifically, the arc plate 21 includes a steel plate 2101 and a rubber plate 2102, and the rubber plate 2102 is located inside the steel plate 2101.
Specifically, the inner wall of the top of the working chamber 16 is provided with an illuminating lamp 33, so that the worker can conveniently work.
The working principle of the utility model is as follows: when the mine car works, the mine car 2 is started to move on the mine car track 1, meanwhile, the motor 9 is also started to drive the bevel gear 9 to rotate, then the lifting platform 12 is lifted, so that a worker can work and observe at a safe position above the mine car, if the mine car 2 is in an accident and is out of the way, the auxiliary supporting device 7 plays a role, so that the mine car 2 is kept balanced as much as possible and can also play a role in speed reduction, and the rubber sleeve 20 and the anti-collision plate 29 can also protect the mine car 2 and avoid being damaged by collision; if the mine car 2 rushes out towards the lifting platform 12, the arc-shaped plate 21 can effectively protect the telescopic rod and the lifting device, the telescopic rod and the lifting device are prevented from being damaged by the mine car 2, even if the lifting platform 12 is knocked down, the mine car 2 is impacted too much, the arc-shaped plate 21 deforms too much, and can touch a switch button of the inflator pump 28, the inflator pump 28 is started, the air bag 25 is rapidly inflated, and even if the lifting platform 12 is knocked down, the functions of supporting, buffering and damping can be achieved, and personnel are prevented from being injured; if the mine shaft wall has falling rocks to fall down, the top plate 18 and the bearing plate 17 can also play a role, can bear the impact of the falling rocks, and can play the bearing capacity of the effective damping and buffering effect and the reinforced top plate 18 through the multilayer structure design of the top plate 18 and the arrangement of the supporting columns 19 and the damping devices 3, and the personal safety of constructors can be effectively protected.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a mine is safety device for pit, includes mine car track (1), the top of mine car track (1) is equipped with mine car (2), is equipped with stopper (31), its characterized in that between mine car (2) and mine car track (1): the mine car is characterized in that a lifting platform (12) is arranged on one side of the mine car (2), a lifting device is arranged on the bottom surface of the lifting platform (12), four corners of the bottom of the lifting platform (12) are connected with telescopic rods, each telescopic rod comprises an inner rod (24) and an outer rod (23) sleeved outside the inner rod (24), a plurality of corresponding through holes (26) are formed in the outer surfaces of the inner rod (24) and the outer rods (23), bolts (22) are connected in the through holes (26) in an internal thread manner, a fixing block (27) is arranged at the bottom end of each outer rod (23), the fixing block (27) is fixedly connected with the bottom surface of a mine wall through second screws (32), an arc plate (21) covering the outer rods (23) is hinged between the adjacent outer rods (23), an air bag (25) connected with an inflating pump (28) is fixed on the bottom surface of the lifting platform (12), and the inner side of the arc plate (21) is tightly attached to a switch button of the inflating pump (28), elevating platform (12) top surface is equipped with studio (16), studio (16) one side articulates there is shutter (15), bearing plate (17) are installed to studio (16) top surface, bearing plate (17) bottom bolted connection has roof (18) of arc form, be equipped with damping device (3) and many support columns (19) that are located the damping device both sides between roof (18) and bearing plate (17).
2. The safety protection device for the underground mine according to claim 1, wherein: elevating gear is including fixing swivel nut (11) at elevating platform (12) bottom surface middle part, threaded connection has screw rod (6) of running through elevating platform (12) in swivel nut (11), screw rod (6) top is rotated and is connected with stop collar (13) of fixing on elevating platform (12), screw rod (6) bottom is rotated and is connected with turning block (4), turning block (4) are through first screw (5) and mine wall bottom fixed connection, the fixed cover in screw rod (6) bottom is equipped with awl ring gear (10), awl ring gear (10) meshing has bevel gear (9), bevel gear (9) fixedly connected with motor (8), motor (8) bottom is fixed with installation piece (30) of installing in mine wall bottom of the well.
3. The safety protection device for the underground mine according to claim 1, wherein: damping device (3) include mounting panel (302), mounting panel (302) top surface mid-mounting has inflatable bumper shock absorber (303), the right side of inflatable bumper shock absorber (303) is equipped with inflating valve (306), blotter (304) are installed to inflatable bumper shock absorber (303) top surface, blotter (304) top surface is fixed with a plurality of decompression spring (305), the bottom surface of mounting panel (302) is equipped with slipmat (301), slipmat (301) are fixed on bearing plate (17) top surface.
4. The safety protection device for the underground mine according to claim 1, wherein: the top surface cover of mine car (2) is equipped with rubber sleeve (20), all be equipped with a plurality of auxiliary stay devices (7) on the side about mine car (2), all be connected with crashproof board (29) through a plurality of second spring (14) on the front and back of mine car (2).
5. The safety protection device for the underground mine according to claim 4, wherein: the auxiliary supporting device (7) comprises a supporting block (705), one side of the supporting block (705) is connected with a connecting rod (704), a sleeve (701) is sleeved on the outer surface of the connecting rod (704), one end, far away from the supporting block (705), of the connecting rod (704) is connected with a sliding block (703), the sliding block (703) is located inside the sleeve (701), the other end of the sliding block (703) is connected with a first spring (702), and the other end of the first spring (702) is fixedly connected with one side of the mine car (2).
6. The safety protection device for the underground mine according to claim 1, wherein: the roof (18) comprises a steel layer (1801), a rubble layer (1802) is attached to the inner side of the steel layer (1801), and a rubber layer (1803) is attached to the inner side of the rubble layer (1802).
7. The safety protection device for the underground mine according to claim 1, wherein: the arc-shaped plate (21) comprises a steel plate (2101) and a rubber plate (2102), and the rubber plate (2102) is located on the inner side of the steel plate (2101).
8. The safety protection device for the underground mine according to claim 1, wherein: and an illuminating lamp (33) is arranged on the inner wall of the top of the working chamber (16).
CN202120531173.1U 2021-03-15 2021-03-15 Safety protection device for underground mine Expired - Fee Related CN215672276U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120531173.1U CN215672276U (en) 2021-03-15 2021-03-15 Safety protection device for underground mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120531173.1U CN215672276U (en) 2021-03-15 2021-03-15 Safety protection device for underground mine

Publications (1)

Publication Number Publication Date
CN215672276U true CN215672276U (en) 2022-01-28

Family

ID=79969198

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120531173.1U Expired - Fee Related CN215672276U (en) 2021-03-15 2021-03-15 Safety protection device for underground mine

Country Status (1)

Country Link
CN (1) CN215672276U (en)

Similar Documents

Publication Publication Date Title
ES2343324T3 (en) SAFETY DEVICE FOR THE PROTECTION OF AN OPERATOR IN THE HOLLOW OF ELEVATORS WITH A FUND OF LOW HEIGHT AND ELEVATOR EQUIPPED WITH THE SAME.
WO2006024173A1 (en) Elevator pit safety device
RU2547041C2 (en) Awning for protection against impact
CN208789625U (en) Anticollision buffer vehicle
CN105712164A (en) Device for improving safety of people in car
ES2709982T3 (en) Rotating superstructure for a construction machine
CN215672276U (en) Safety protection device for underground mine
CN215252388U (en) High-altitude falling object protection device for road and bridge engineering
ES2902335T3 (en) Elevator cabin feet protector system
CN107739017A (en) Forklift truck guard and there is its fork truck
CN215254985U (en) Anti-collision device for parking lot
CN108137169B (en) Aircraft elevator
CN111074770A (en) Bridge guardrail of bridge floor can be widened to dual shock attenuation formula
CN214366181U (en) Coal mining safety device
CN216345889U (en) Anticollision street lamp with guide function
CN211647238U (en) Safety hanging basket for constructional engineering
CN112942096B (en) Bridge engineering is with crashproof type buffering guardrail structure
CN212893554U (en) Safety protection device for crown block driver
CN116104353A (en) Novel anti-collision buffer fence
CN219314288U (en) Building material lifting device for high-rise building construction
CN113352977A (en) Take anticollision buffer's multi-functional guardrail breakdown van
CN219769968U (en) Coal dumper device with shock-absorbing protection function
CN105016263A (en) Aerial work platform allowing users to get in easily
CN105016262A (en) Aerial work platform provided with pothole protection device and railing door allowing users to get in easily
CN214303874U (en) Novel mine safety protection device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20220128

CF01 Termination of patent right due to non-payment of annual fee