CN112744762B - Hollow protection device of scissor type aerial work platform - Google Patents
Hollow protection device of scissor type aerial work platform Download PDFInfo
- Publication number
- CN112744762B CN112744762B CN202110101607.9A CN202110101607A CN112744762B CN 112744762 B CN112744762 B CN 112744762B CN 202110101607 A CN202110101607 A CN 202110101607A CN 112744762 B CN112744762 B CN 112744762B
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- hollow
- elastic piece
- pressing plate
- plate
- fork frame
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- 238000003825 pressing Methods 0.000 claims abstract description 76
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000239290 Araneae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/042—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a hollow protection device of a scissor type aerial work platform, which is arranged on a fork frame, wherein the fork frame is arranged on a fork frame base; the device comprises a pressing plate, a first elastic piece, a second elastic piece, two hollow eccentric press blocks and two connecting rods, wherein the pressing plate is arranged at the center of a fork frame, the first elastic piece and the second elastic piece are symmetrically arranged along the central axis of the pressing plate, and the two hollow eccentric press blocks are respectively arranged between one connecting rod and the first elastic piece and between the other connecting rod and the second elastic piece; one end of the connecting rod is connected with the hollow eccentric pressing block, and the other end of the connecting rod is connected with a hollow protection plate which can be outwards opened. The hollow protection system is simple and ingenious in structure, low in failure rate and higher in reliability, can effectively ensure the use effect of the aerial work platform, and simultaneously reduces the manufacturing and maintenance cost, namely reduces the use cost of a user, and is beneficial to popularization and application of the hollow protection mechanism in the technical field of the aerial work platform.
Description
Technical Field
The invention relates to the technical field of aerial work platforms, in particular to a hollow protection device of a scissor-type aerial work platform.
Background
The aerial work platform is a product for serving movable aerial works such as aerial works in various industries, equipment installation, overhaul and the like. The related products of the aerial work platform mainly comprise: scissor type aerial work platform, trailer type aerial work platform, crank type aerial work platform, straight arm type aerial work platform, aluminum alloy aerial work platform, sleeve type aerial work platform and spider type aerial work platform.
The aerial work platform is suitable for aerial work of various systems such as fire rescue, electric power, street lamps, advertisements, film shooting, communication, gardens, traffic, industrial and mining, wharfs and the like, and installation maintenance and ascending work of industries such as large stadiums, decoration inside and outside plants, ships, civil aviation, steel structures and the like. When the aerial working platform works on the hollow ground, wheels are easy to sink into the aerial working platform, the vehicle body is easy to incline at the moment, and the risk of tipping exists, so that the personal safety of operators is not guaranteed.
Aiming at the problem that the inclination easily occurs, the patent with the Chinese patent publication number of CN206615967U provides a hollow protection mechanism of an aerial working platform, which comprises a fixed block arranged on a chassis, wherein the side edge of the bottom surface of the chassis is provided with a hollow supporting plate, the hollow supporting plate is hinged and fixed on the chassis and hinged with the lower end of a first connecting rod, the upper end of the first connecting rod is hinged with the left side of a second connecting rod through a pin shaft, the pin shaft is sleeved and fixed on an arc-shaped hole arranged on the side surface of the chassis, the center of the arc-shaped hole is the center of the second connecting rod, a pressing shaft penetrates through the fixed block and is arranged on the side surface of the chassis to move up and down, the first spring is fixedly arranged between the upper side of the fixed block and a top cap of the pressing shaft, the upper end of the second spring is connected with the pin shaft, the lower end of the second spring is fixedly connected with the bottom surface of the chassis, and therefore, the side edge of the chassis is provided with the connecting block and the second spring, and the bottom cap of the pressing shaft is positioned below the fixed block and on the right side of the fixed block. The probability of tipping the car body is reduced by arranging the hollow protection mechanism of the aerial working platform on the four side feet on the bottom surface of the chassis, and the technical problem is reasonably solved.
However, as the hollow protection mechanism of the aerial work platform is arranged on the four side feet on the bottom surface of the chassis, the structure is complex, the failure rate is high, and meanwhile, the manufacturing cost is high, so that the use cost of a user is increased, and the popularization and the application of the hollow protection mechanism in the technical field of aerial work platforms are not facilitated.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the hollow protection device of the scissor type aerial work platform, which has the advantages of simple and ingenious structure, low failure rate and higher reliability, effectively ensures the use effect of the aerial work platform, reduces the manufacturing and maintenance cost, namely reduces the use cost of users, and is beneficial to the popularization and application of the hollow protection mechanism in the technical field of aerial work platforms.
In order to achieve the aim, the invention adopts the following technical scheme that a hollow protection device of a scissor type aerial work platform is arranged on a fork frame, and the fork frame is arranged on a fork frame base; the device comprises a pressing plate, a first elastic piece, a second elastic piece, two hollow eccentric press blocks and two connecting rods, wherein the pressing plate is arranged at the center of a fork frame, the first elastic piece and the second elastic piece are symmetrically arranged along the central axis of the pressing plate, and the two hollow eccentric press blocks are respectively arranged between one connecting rod and the first elastic piece and between the other connecting rod and the second elastic piece; one end of the connecting rod is connected with the hollow eccentric pressing block, and the other end of the connecting rod is connected with a hollow protection plate which can be outwards opened.
As a preferable mode of the invention, the hollow protection plate is arranged at the bottom of the fork frame base.
As a preferable scheme of the invention, the fork frame base is provided with a limiting plate for preventing the hollow eccentric pressing block from reaching the dead point to cause reverse movement.
As a preferable scheme of the invention, the first elastic piece and the second elastic piece are compression springs, and the first elastic piece and the second elastic piece are covered by a protective sleeve.
As a preferable scheme of the invention, one surface of the pressing plate is provided with reinforcing rib plates, and the reinforcing rib plates are symmetrically arranged along the central axis of the pressing plate.
As a preferable scheme of the invention, an anti-abrasion plate is arranged at the joint of the pressing plate and the fork frame, and the anti-abrasion plate is connected with the pressing plate through a locking piece.
As a preferable mode of the invention, the locking member is a locking bolt.
As a preferable scheme of the invention, the two limiting plates are symmetrically arranged along the central axis of the pressing plate.
As a preferable mode of the present invention, the two connecting rods are symmetrically arranged along the central axis of the pressing plate.
As a preferred embodiment of the present invention, the two hollow eccentric compacts are symmetrically disposed along a central axis of the pressing plate.
According to the hollow protection device of the scissor type aerial work platform, the pressing plate, the first elastic piece, the second elastic piece, the hollow eccentric pressing block and the connecting rod are arranged, the pressing plate is arranged at the center of the fork frame, the first elastic piece and the second elastic piece are symmetrically arranged along the central axis of the pressing plate, so that the stability of the hollow protection mechanism in the use process can be effectively ensured, meanwhile, the hollow protection system is simple and ingenious in structure, low in failure rate and higher in reliability, the use effect of the aerial work platform is effectively ensured, meanwhile, the manufacturing and maintenance cost is reduced, namely the use cost of a user is reduced, and the popularization and the application of the hollow protection mechanism in the technical field of aerial work platforms are facilitated.
Drawings
FIG. 1 is a schematic view of a scissor aerial platform mounting a pothole protection device;
FIG. 2 is a schematic view of a mounting of a pothole protection system to an aerial platform in a folded state of a scissor aerial platform according to an embodiment;
FIG. 3 is a schematic view of a compression mechanism in a pothole protection device of a scissor aerial platform according to an embodiment;
FIG. 4 is a schematic view of a compression mechanism in a pothole protection device of a scissor aerial platform according to an embodiment;
fig. 5 is a schematic installation view of a hollow protection system installed on an aerial platform in a lifted state of a scissor type aerial platform according to an embodiment.
Reference numerals: 10. a pressing plate; 11. a first elastic member; 12. a second elastic member; 13. reinforcing rib plates; 14. an abrasion-proof plate; 15. a locking member; 16. a protective sleeve; 2. hollow eccentric pressing blocks; 3. a connecting rod; 4. a pothole protection plate; 5. a limiting plate; 6. a travel switch; 7. a fork; 8. a fork frame base.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples: as shown in fig. 1 to 5, a hollow protection device of a scissor type aerial work platform is installed on a fork frame 7, the fork frame 7 is installed on a fork frame base 8, the hollow protection device comprises a pressing plate 10, a first elastic member 11, a second elastic member 12, two hollow eccentric pressing blocks 2 and two connecting rods 3, the pressing plate 10 is installed at the central position of the fork frame 7 and moves up and down along with the rising or falling of the fork frame 7, the working of a hollow protection system is realized, the first elastic member 11 and the second elastic member 12 are symmetrically arranged along the central axis of the pressing plate 10, the first elastic member 11 and the second elastic member 12 are compression springs with simple structures and convenient installation, and the stability of the structure of the pressing plate 10 in the rising or falling process can be effectively ensured, and the two hollow eccentric pressing blocks 2 are respectively installed between one connecting rod 3 and the first elastic member 11 and the other connecting rod 3 and the second elastic member 12; the eccentric briquetting 2 of above-mentioned connecting rod 3 one end is connected at above-mentioned hollow, and the other end is connected with the hollow protection shield 4 that can outwards open, and to cutting fork aerial work platform from walking, hollow protection system is a necessary device, can outwards open through setting up hollow protection shield 4, realizes cutting fork aerial work platform from walking when driving every wheel in turns and going into or leaving 600mm x 600mm, deep 100 mm's hollow with the maximum speed completely, guarantees that the vehicle steadily can not tip over, and then guarantees operating personnel's security.
The spring force of the first elastic member 11 and the second elastic member 12 must be selected to be greater than the self weight of the hollow eccentric pressing block 2 to reversely press the hollow protecting plate 4 until the hollow protecting plate is in a flattened state, and meanwhile, the hollow protecting plate is required to have good impact buffering capability.
The hollow protection board 4 is arranged at the bottom of the fork frame base 8, so that the use effect of the hollow protection board 4 is guaranteed, the hollow protection board 4 is completely opened by means of dead weight, the mechanical structure is simple, flexible and reliable, and the failure rate is low.
The first elastic piece 11 and the second elastic piece 12 are covered with the protective sleeve 16, and the protective sleeve 16 is mainly used for avoiding that some crushed aggregates and impurities block the spring under more complex working conditions, so that the mechanism is extruded to cause the failure of the mechanism when the scissors fall down, and the using effect of the pothole protection system is ensured.
The size of the connecting rod 3 is set according to the distance between the hollow eccentric pressing block 2 and the hollow protecting plate 4, so as to connect the hollow eccentric pressing block 2 and the hollow protecting plate 4, thereby effectively realizing that the hollow protecting plate 4 is opened vertically and works normally, and simultaneously preventing the hollow protecting plate 4 from being retracted under the action of external force more effectively at the same time.
The limiting plate 5 for preventing the hollow eccentric pressing block 2 from moving reversely when reaching the dead point is arranged near the hollow eccentric pressing block 2, and the limiting plate 5 is fixedly arranged on the fork frame base 8 to further ensure the stability of the structure of the limiting plate 5, so that the arrangement of the limiting plate 5 can prevent the hollow eccentric pressing block 2 from moving in the direction when reaching the dead point, and avoid the hollow plate from being in a state incapable of being folded.
The depression protection device is also provided with a travel switch 6, the travel switch 6 is arranged on the fork frame base 8, the travel switch 6 is in contact with the limit plate 5, namely, a transmission instruction of the travel switch 6 is designed in association with the working state of the depression protection system, and when the pressure plate 10 is pressed down until the limit plate 5 is in contact with the travel switch 6, the pressure plate 10 stops pressing down.
Further, in order to ensure the stability of the structure of the hollow protection system, and further ensure the use effect of the scissor type aerial work platform, the two limiting plates 5 are symmetrically arranged along the central axis of the pressing plate 10, the two connecting rods 3 are symmetrically arranged along the central axis of the pressing plate 10, and the two hollow eccentric pressing blocks 2 are symmetrically arranged along the central axis of the pressing plate 10.
In order to further ensure the structural strength of the compression structure 1, a reinforcing rib plate 13 is disposed on one surface of the pressing plate 10, and the reinforcing rib plate 13 is symmetrically disposed along the central axis of the pressing plate 10.
In order to ensure the service life of the pressing plate 10, further ensure the service life of the pothole protection system, reduce the use cost, the joint of the pressing plate 10 and the fork frame 7 is provided with an anti-wear plate 14, the anti-wear plate 14 is connected with the pressing plate 10 through a locking piece 15, the locking piece 15 is a locking bolt with a simple structure and convenient installation, when accessories in the pothole protection system need to be overhauled and replaced, the locking bolt can be directly detached, and the pothole protection system is simple and convenient, is easy to operate, can effectively maintain the operation efficiency of staff, enhances the use experience, and is beneficial to popularization and application of the pothole protection system in the technical field of high-altitude operation platforms.
The working principle of the pothole protection system in the embodiment is as follows: the pit protection system has two states, namely a working state; and the second is a non-working state, namely a furling state.
1. Principle of working state: because the pressing plate 10 is fixed on the fork frame 7, the pressing plate is separated from contact with the hollow eccentric pressing block 2 along with lifting of the fork frame 7, and at the moment, the hollow eccentric pressing block 2 moves downwards around the rotating shaft point to be stopped by the limiting plate 5 under the action of dead weight; the hollow protection plate 4 is pushed to open by the connecting rod 3, so that the area of the bottom of the fork frame 7 is enlarged, and at the moment, the hollow protection plate 4 cannot be folded under the action of external force and is in a safe working state.
At this time, when the hollow eccentric pressing block 2 moves downward, the head moves upward and touches the travel switch 6, so that the travel switch 6 is electrified, and simultaneously, an instruction is transmitted to the controller, so that the vehicle is forcedly controlled to have only a slow-speed running function, and the high-speed running function is disabled. At this time, when the fork frame 7 is lifted and the platform is lifted to a certain height to the maximum working height, the vehicle has only a low-speed safe running speed, so that the use safety of the aerial working platform is ensured, and the life safety of operators is further ensured.
2. The principle of the non-working state, namely the furling state: because the pressing plate 10 is fixed on the fork frame 7, when the fork frame 7 descends to a fully folded state, the first elastic piece 11 and the second elastic piece 12 are in contact with the hollow eccentric pressing block 2 and slowly press down the hollow eccentric pressing block 2, and at the moment, the hollow protection plate 4 is folded to the position of the limiting plate 5 and stops moving under the pulling of the connecting rod 3.
At this time, after the hollow eccentric pressing block 2 is flattened by the first elastic member 11 and the second elastic member 12, the hollow eccentric pressing block is separated from contact with the travel switch 6, at this time, the travel switch 6 is powered off, and simultaneously, a command is transmitted to the controller to control the vehicle to have two traveling states of high speed and low speed.
When the hollow protection plate 4 is not in the two states, the fault of the vehicle is indicated, and the alarm reminds that the vehicle can prohibit all working functions except descending, stop and check, and carry out related work after the fault is removed.
According to the hollow protection device of the scissor type aerial work platform, through the arrangement of the pressing plate 10, the hollow eccentric pressing block 2, the connecting rod 3 and the travel switch 6, the pressing plate 10 is fixedly connected to the fork frame 7 and is installed at the center position of the fork frame 7, the first elastic piece 11 and the second elastic piece 12 are symmetrically arranged along the central axis of the pressing plate 10, the stability of the hollow mechanism in the use process can be effectively guaranteed, meanwhile, the hollow protection system is simple and ingenious in structure, low in failure rate and higher in reliability, the use effect of the aerial work platform is effectively guaranteed, meanwhile, the manufacturing and maintenance cost is reduced, namely the use cost of a user is reduced, and the hollow protection mechanism is beneficial to popularization and application in the technical field of aerial work platforms.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more herein: 1. a compression mechanism; 10. a pressing plate; 11. a first elastic member; 12. a second elastic member; 13. reinforcing rib plates; 14. an abrasion-proof plate; 15. a locking member; 2. hollow eccentric pressing blocks; 3. a connecting rod; 4. a pothole protection plate; 5. a limiting plate; 6. a travel switch; 7.a fork; 8. fork carriage base, etc., but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (1)
1. The hollow protection device of the scissor type aerial work platform is arranged on a fork frame (7), and the fork frame (7) is arranged on a fork frame base (8); the method is characterized in that: the device comprises a pressing plate (10), a first elastic piece (11), a second elastic piece (12), two hollow eccentric press blocks (2) and two connecting rods (3), wherein the pressing plate (10) is installed at the center of a fork frame (7), the first elastic piece (11) and the second elastic piece (12) are symmetrically arranged along the central axis of the pressing plate (10), and the two hollow eccentric press blocks (2) are respectively installed between one connecting rod (3) and the first elastic piece (11) and between the other connecting rod (3) and the second elastic piece (12); one end of the connecting rod (3) is connected with the hollow eccentric pressing block (2), and the other end of the connecting rod is connected with a hollow protection plate (4) which can be outwards opened;
The hollow protection plate (4) is arranged at the bottom of the fork frame base (8);
a limiting plate (5) for preventing the hollow eccentric pressing block (2) from reaching a dead point to cause reverse movement is arranged on the fork frame base (8);
the first elastic piece (11) and the second elastic piece (12) are compression springs, and a protective sleeve (16) is arranged on the outer covers of the first elastic piece (11) and the second elastic piece (12);
one surface of the pressing plate (10) is provided with reinforcing rib plates (13), and the reinforcing rib plates (13) are symmetrically arranged along the central axis of the pressing plate (10);
an anti-abrasion plate (14) is arranged at the joint of the pressing plate (10) and the fork frame (7), and the anti-abrasion plate (14) is connected with the pressing plate (10) through a locking piece (15);
The locking piece (15) is a locking bolt;
The two limiting plates (5) are symmetrically arranged along the central axis of the pressing plate (10);
The two connecting rods (3) are symmetrically arranged along the central axis of the pressing plate (10);
the two hollow eccentric pressing blocks (2) are symmetrically arranged along the central axis of the pressing plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101607.9A CN112744762B (en) | 2021-01-26 | 2021-01-26 | Hollow protection device of scissor type aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101607.9A CN112744762B (en) | 2021-01-26 | 2021-01-26 | Hollow protection device of scissor type aerial work platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112744762A CN112744762A (en) | 2021-05-04 |
| CN112744762B true CN112744762B (en) | 2024-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110101607.9A Active CN112744762B (en) | 2021-01-26 | 2021-01-26 | Hollow protection device of scissor type aerial work platform |
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| Country | Link |
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| CN (1) | CN112744762B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224209A (en) * | 2013-04-24 | 2013-07-31 | 山东力高升降机械有限公司 | Hollow protecting device of lifting platform |
| CN206615967U (en) * | 2017-03-24 | 2017-11-07 | 苏州智米高装备科技有限公司 | A kind of aerial work platform hollow protection mechanism |
| CN107827022A (en) * | 2017-12-11 | 2018-03-23 | 湖南杰希重工有限公司 | A kind of pit-hole protection mechanism and method of work from scissor-type mobile lifting platform of walking |
| CN210505479U (en) * | 2019-06-14 | 2020-05-12 | 南通润邦重机有限公司 | Chassis pit hole protection device for scissor aerial work platform |
| CN211078406U (en) * | 2019-12-16 | 2020-07-24 | 湖南杰希重工有限公司 | Pit protection mechanism of self-walking scissor-fork type movable lifting platform |
| CN211169757U (en) * | 2019-11-19 | 2020-08-04 | 中联重科股份有限公司 | Pit protection mechanism and mobile operation platform |
| CN215249442U (en) * | 2021-01-26 | 2021-12-21 | 浙江加力仓储设备股份有限公司 | Cut fork aerial working platform's pothole protection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3035099A1 (en) * | 2015-04-18 | 2016-10-21 | Haulotte Group | LIFT NACELLE A PROTECTION AGAINST NIDS DE POULE |
-
2021
- 2021-01-26 CN CN202110101607.9A patent/CN112744762B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224209A (en) * | 2013-04-24 | 2013-07-31 | 山东力高升降机械有限公司 | Hollow protecting device of lifting platform |
| CN206615967U (en) * | 2017-03-24 | 2017-11-07 | 苏州智米高装备科技有限公司 | A kind of aerial work platform hollow protection mechanism |
| CN107827022A (en) * | 2017-12-11 | 2018-03-23 | 湖南杰希重工有限公司 | A kind of pit-hole protection mechanism and method of work from scissor-type mobile lifting platform of walking |
| CN210505479U (en) * | 2019-06-14 | 2020-05-12 | 南通润邦重机有限公司 | Chassis pit hole protection device for scissor aerial work platform |
| CN211169757U (en) * | 2019-11-19 | 2020-08-04 | 中联重科股份有限公司 | Pit protection mechanism and mobile operation platform |
| CN211078406U (en) * | 2019-12-16 | 2020-07-24 | 湖南杰希重工有限公司 | Pit protection mechanism of self-walking scissor-fork type movable lifting platform |
| CN215249442U (en) * | 2021-01-26 | 2021-12-21 | 浙江加力仓储设备股份有限公司 | Cut fork aerial working platform's pothole protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112744762A (en) | 2021-05-04 |
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