CN113173539A - Telescopic boom crawler-type aerial work platform - Google Patents
Telescopic boom crawler-type aerial work platform Download PDFInfo
- Publication number
- CN113173539A CN113173539A CN202110564064.4A CN202110564064A CN113173539A CN 113173539 A CN113173539 A CN 113173539A CN 202110564064 A CN202110564064 A CN 202110564064A CN 113173539 A CN113173539 A CN 113173539A
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- motor
- rotatably connected
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- 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
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
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- 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
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- 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 telescopic arm crawler-type aerial work platform which comprises a bearing seat, a first motor and a rain shielding mechanism, wherein a second hydraulic cylinder is fixed on the left inner wall of a rotating plate, a rotating sleeve is rotatably connected to the right side of a moving plate, a rotating door is rotatably connected to the front side of a manned platform, and the rain shielding mechanism is arranged at the top of the manned platform. This flexible arm crawler-type aerial working platform, the operation personnel climb the ladder and open the revolving door and get into and can close the revolving door after in the manned platform, first piston rod plays the effect of shore to the revolving plate, first piston rod is flexible while rotating along with first pneumatic cylinder, the revolving plate rotates, the convenience is gone up and down to the manned platform and is handled, the lug can rotate under the effect of third motor and third motor shaft simultaneously, make the manned platform be in all the time just steady state, the movable plate can be controlled under the flexible effect of second piston rod simultaneously, thereby it controls to drive the manned platform and remove, conveniently adjust the position of movable plate.
Description
Technical Field
The invention relates to the technical field of aerial work platforms, in particular to a telescopic boom crawler-type aerial work platform.
Background
The aerial work platform is a movable aerial work product for serving aerial work, equipment installation, maintenance and the like in various industries, and related products of the aerial work platform mainly comprise: the lifting platform comprises seven types, namely a scissor-fork type aerial working platform, a trailer type aerial working platform, a crank arm type aerial working platform, a straight arm type aerial working platform, an aluminum alloy aerial working platform, a telescopic cylinder type aerial working platform and a spider type aerial working platform.
Disclosure of Invention
The invention aims to provide a telescopic arm crawler-type aerial work platform, which aims to solve the problems that the manned platform is not smooth enough, the position of a canopy on the manned platform is inconvenient to adjust and the falling object is blocked in the process of lifting the manned platform in the conventional aerial work platform in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a telescopic arm crawler-type aerial work platform, which comprises a bearing seat, a first motor and a rain shielding mechanism,
the middle of the lower end face of the bearing seat is provided with a crawler belt with a driving device, the left side and the right side of the lower end face of the bearing seat are both fixed with electric telescopic columns, the bottoms of the electric telescopic columns are connected with a supporting plate, the left side and the right side of the upper end face of the bearing seat are respectively fixed with a control chamber and a fixed seat, the right side of the front end face of the fixed seat is provided with a ladder, the left side of the upper end face of the fixed seat is rotatably connected with a rotary table, the left side and the right side of the upper end face of the rotary table are respectively rotatably connected with a rotary plate and a first hydraulic cylinder, the upper side of the first hydraulic cylinder is connected with the rotary plate through a first piston rod, the left inner wall of the rotary plate is fixed with a second hydraulic cylinder, the right side of the second hydraulic cylinder is connected with a second piston rod, the right side of the movable plate is rotatably connected with a rotary sleeve, the inner side of the rotary plate is rotatably connected with a convex block, and the convex block is fixed on the left end face of the manned platform, the front side of the manned platform is rotatably connected with a revolving door;
and the rain shielding mechanism is arranged at the top of the manned platform.
Preferably, the abutting plate is rotatably connected to the bottom of the electric telescopic column through a stud bolt, the electric telescopic column and the abutting plate are respectively provided with four electric telescopic columns, and the four electric telescopic columns are symmetrically arranged about a vertical central axis of the bearing seat.
Preferably, the lower end face of the fixing seat is provided with a groove, a generator is arranged in the groove, the generator is fixed on the bearing seat, net covers are arranged on the front side and the rear side of the generator, and the net covers are fixed on the fixing seat through fixing bolts.
Preferably, the first motor is fixed in the fixing seat, and the upper side of the first motor is rotatably connected with the rotating table through a first motor shaft.
Preferably, the rotating plate is rotatably connected to the rotating table through a first shaft.
Preferably, the left end of the first hydraulic cylinder is rotatably connected to the rotary table through a second shaft rod, and the right end of the first piston rod is rotatably connected to the rotary plate through the second shaft rod.
Preferably, a second motor is fixed to the bottom of the right side of the moving plate, a rotating sleeve is connected to the upper side of the second motor in a rotating mode through a second motor shaft, a third motor is fixed to the front side of the rotating sleeve, and a protruding block is connected to the rear side of the third motor in a rotating mode through the third motor shaft.
Preferably, the revolving door is rotatably connected to the manned platform through a hinge.
Preferably, rain-proof mechanism includes first motor, revolving rack, second motor and fender canopy, and first motor is fixed in the left front side in manned platform top, and the rear side rotation of first motor is connected with the revolving rack simultaneously, the front side at revolving rack top is fixed with the second motor, and the rear side rotation of second motor is connected with and keeps off the canopy.
Compared with the prior art, the invention has the beneficial effects that: the crawler-type aerial work platform with the telescopic boom,
(1) the device can be driven after a worker enters the control room, the crawler can run under the action of the driving device so as to drive the device to travel to a required place, and then the abutting plate can move downwards and abut against the ground under the extension action of the electric telescopic column, so that the stability of the device is improved conveniently;
(2) an operator climbs the ladder and opens the revolving door to enter the manned platform, and then can close the revolving door, the first hydraulic cylinder and the first piston rod play a role in supporting the revolving plate, the revolving plate rotates when the first piston rod rotates along with the first hydraulic cylinder while stretching, so that the manned platform can be conveniently lifted, meanwhile, the lug can rotate under the action of the third motor and the third motor shaft, so that the manned platform can be always in a straight and stable state, and meanwhile, the movable plate can move left and right under the stretching action of the second piston rod, so that the manned platform is driven to move left and right, and the position of the movable plate can be conveniently adjusted;
(3) the rotating plate can rotate along with the rotating platform, so that the manned platform is driven to rotate, the direction of the manned platform is convenient to control, and then the rotating sleeve can rotate under the action of the second motor and the second motor shaft, so that the lug and the manned platform are driven to integrally rotate, and the direction control operation of the manned platform is more accurate;
(4) keep off the canopy and can play the effect that keeps off the rain and keep off the object that weighs down, keep off the canopy simultaneously and can rotate along with the revolving rack, also can rotate under the effect of second motor, conveniently adjust the position that keeps off the canopy according to particular case.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view of the front view of the present invention;
FIG. 3 is a schematic top view of the cross-sectional structure of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic bottom view of the present invention;
fig. 6 is a schematic view of the connection structure of the swivel sleeve, the manned platform and the rain shielding mechanism.
In the figure: 1. the device comprises a bearing seat, 2, a track, 3, an electric telescopic column, 4, a supporting plate, 5, a stud bolt, 6, a control room, 7, a fixed seat, 8, a groove, 9, a generator, 10, a net cover, 11, a fixing bolt, 12, a ladder, 13, a first motor, 14, a first motor shaft, 15, a rotary table, 16, a rotary plate, 17, a first shaft rod, 18, a first hydraulic cylinder, 19, a second shaft rod, 20, a first piston rod, 21, a second hydraulic cylinder, 22, a second piston rod, 23, a movable plate, 24, a second motor, 25, a second motor shaft, 26, a rotary sleeve, 27, a third motor, 28, a third motor shaft, 29, a bump, 30, a manned platform, 31, a rotary door, 32, a hinge, 33, a rain blocking mechanism, 3301, a first motor, 3302, a rotary frame, 3303, a second motor, 3304 and a shed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a crawler-type aerial work platform with telescopic arms is characterized in that as shown in figures 1 and 2, a crawler 2 with a driving device is arranged in the middle of the lower end face of a bearing seat 1, electric telescopic columns 3 are fixed on the left side and the right side of the lower end face of the bearing seat 1, meanwhile, the bottoms of the electric telescopic columns 3 are connected with abutting plates 4, the abutting plates 4 are rotatably connected to the bottoms of the electric telescopic columns 3 through studs 5, the electric telescopic columns 3 and the abutting plates 4 are four in number, meanwhile, the four electric telescopic columns 3 are symmetrically arranged about a vertical central axis of the bearing seat 1, after the platform is driven to a required place, the abutting plates 4 move downwards under the extension action of the electric telescopic columns 3 and abut against the ground, the platform is convenient to stabilize the platform, the electric telescopic columns 3 and the abutting plates 4 are in a movable state, and each abutting plate 4 can abut against the ground.
According to the drawings of fig. 1, fig. 2 and fig. 3, a control room 6 and a fixed seat 7 are respectively fixed on the left side and the right side of the upper end surface of a bearing seat 1, a step 12 is arranged on the right side of the front end surface of the fixed seat 7, a groove 8 is arranged on the lower end surface of the fixed seat 7, a generator 9 is arranged in the groove 8, the generator 9 is fixed on the bearing seat 1, mesh covers 10 are arranged on the front side and the rear side of the generator 9, the mesh covers 10 are fixed on the fixed seat 7 through fixing bolts 11, the generator 9 can supply power for the whole device, so that the normal operation of the device is ensured, the generator 9 can be maintained by using a maintenance tool after the fixing bolts 11 are screwed down and the mesh covers 10 are taken down, a first motor 13 is fixed inside the fixed seat 7, the upper side of the first motor 13 is rotatably connected with a rotary table 15 through a first motor shaft 14, the rotary table 15 can rotate under the actions of the first motor 13 and the first motor shaft 14, thereby driving the rotating plate 16, the moving plate 23, the rotating sleeve 26, the bump 29 and the manned platform 30 to integrally rotate, and conveniently and greatly adjusting the direction of the manned platform 30.
According to fig. 1, 2, 3 and 4, the left side of the upper end surface of the fixed seat 7 is rotatably connected with a rotary table 15, the left side and the right side of the upper end surface of the rotary table 15 are rotatably connected with a rotary plate 16 and a first hydraulic cylinder 18 respectively, meanwhile, the upper side of the first hydraulic cylinder 18 is connected with the rotary plate 16 through a first piston rod 20, the rotary plate 16 is rotatably connected with the rotary table 15 through a first shaft rod 17, the rotary plate 16 can rotate under the action of the first shaft rod 17 in the process that the first piston rod 20 rotates along with the first hydraulic cylinder 18 while extending, the first hydraulic cylinder 18 and the first piston rod 20 play a role of supporting assistance in the process that the rotary plate 16 rotates, the left end of the first hydraulic cylinder 18 is rotatably connected with the rotary table 15 through a second shaft rod 19, the right end of the first piston rod 20 rotates on the rotary plate 16 through the second shaft rod 19, when the first piston rod 20 extends, the first piston rod 20 can rotate under the action of the corresponding second shaft, the first hydraulic cylinder 18 can rotate under the action of the corresponding second shaft lever 19, and the rotating plate 16 is conveniently and smoothly supported to rotate.
Referring to fig. 1, 2, 3, 4 and 5, a second hydraulic cylinder 21 is fixed on the left inner wall of the rotating plate 16, the right side of the second hydraulic cylinder 21 is connected with a moving plate 23 through a second piston rod 22, the right side of the moving plate 23 is rotatably connected with a rotating sleeve 26, the inner side of the rotating sleeve 26 is rotatably connected with a bump 29, the bump 29 is fixed on the left end surface of the manned platform 30, a second motor 24 is fixed on the bottom of the right side of the moving plate 23, the upper side of the second motor 24 is rotatably connected with the rotating sleeve 26 through a second motor shaft 25, a third motor 27 is fixed on the front side of the rotating sleeve 26, the rear side of the third motor 27 is rotatably connected with the bump 29 through a third motor shaft 28, the rotating sleeve 26 can rotate under the action of the second motor shaft 25 on the upper side of the second motor 24, so as to drive the bump 29 and the manned platform 30 to integrally rotate, thereby facilitating the direction adjustment of the manned platform 30 with a small amplitude, in the process that the rotating plate 16 rotates under the supporting action of the first hydraulic cylinder 18 and the first piston rod 20, the bump 29 can rotate under the action of the third motor 27 and the third motor shaft 28, the phenomenon that the manned platform 30 inclines is avoided, the front side of the manned platform 30 is rotatably connected with the rotating door 31, the rotating door 31 is rotatably connected to the manned platform 30 through a hinge 32, when the rotating door 31 is manually pushed and pulled, the rotating door 31 can rotate under the action of the hinge 32, the rotating door 31 is conveniently opened or closed, the rotating door 31 needs to be opened before entering the manned platform 30, and the rotating door 31 is closed after entering the manned platform 30.
According to fig. 1, 2, 3, 4 and 6, rain shielding mechanism 33 is disposed on top of manned platform 30, rain shielding mechanism 33 includes first motor 3301, rotating frame 3302, second motor 3303 and canopy 3304, and first motor 3301 is fixed on the left front side of manned platform 30, and the rear side of first motor 3301 is connected with rotating frame 3302 in a rotating manner, and the front side of rotating frame 3302 is fixed with second motor 3303, and the rear side of second motor 3303 is connected with canopy 3304 in a rotating manner, and rotating frame 3302 can rotate under the effect of first motor 3301, thereby driving canopy 3304 to rotate, and canopy 3304 can rotate under the effect of second motor 3303, and the position of canopy 3304 is conveniently adjusted according to specific conditions.
The working principle of the embodiment is as follows: when the telescopic arm crawler-type aerial work platform is used, the generator 9 supplies power to the whole device, the generator 9 can be maintained by using a maintenance tool after the fixing bolt 11 is unscrewed and the net cover 10 is taken off, a worker can drive the device after entering the control room 6, at the moment, the crawler 2 runs under the action of the driving device so as to drive the device to run leftwards, after the device reaches a required place, the electric telescopic column 3 is started, the electric telescopic column 3 extends, the abutting plate 4 is driven to move downwards so as to abut and fix the device, the electric telescopic column 3 and the abutting plate 4 are in a movable state, each abutting plate 4 can be tightly attached to the ground, the device is more stable, the worker climbs the ladder 12, opens the revolving door 31 to enter the manned platform 30 and then closes the revolving door 31, after the first hydraulic cylinder 18 is started, the first hydraulic cylinder 18 drives the first piston rod 20 to stretch, at this time, the first hydraulic cylinder 18 and the first piston rod 20 rotate under the action of the two corresponding shaft rods 19, the first hydraulic cylinder 18 and the first piston rod 20 support the rotating plate 16, the rotating plate 16 rotates under the action of the first shaft rod 17, the manned platform 30 is convenient to lift, the third motor 27 is started, the third motor 27 drives the third motor shaft 28 to rotate, so as to drive the lug 29 to rotate, so that the manned platform 30 can be always in a normal and stable state, after the second hydraulic cylinder 21 is started, the second hydraulic cylinder 21 drives the second piston rod 22 to stretch, so as to drive the moving plate 23 to move left and right, the rotating sleeve 26, the lug 29 and the manned platform 30 move left and right integrally, so as to conveniently adjust the position of the manned platform 30, after the first motor 13 is started, the first motor 13 drives the first hydraulic cylinder 14 to rotate, so as to drive the rotating table 15 to rotate, so as to drive the rotating plate 16 to move left and right, the second hydraulic cylinder 18 and the first piston rod 20 to drive the third motor shaft 28 to rotate, The movable plate 23, the rotating sleeve 26, the bump 29 and the manned platform 30 integrally rotate, so that the direction of the manned platform 30 can be conveniently and greatly adjusted, after the second motor 24 is started, the second motor 24 drives the second motor shaft 25 to rotate, the rotating sleeve 26 is driven to rotate, the bump 29 and the manned platform 30 are driven to integrally rotate, the direction of the manned platform 30 can be conveniently and slightly adjusted, the shelter 3304 can play a role of keeping off rain and falling objects, after the first motor 3301 is started, the first motor 3301 drives the rotating frame 3302 to rotate, after the second motor 3303 is started, the second motor 3303 drives the shelter 3304 to rotate, the position of the shelter 3304 can be conveniently adjusted according to specific conditions, and the content which is not described in detail in the specification belongs to the prior art which is well known by a person skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a flexible arm crawler-type aerial working platform, is including bearing seat (1), first motor (13) and rain-proof mechanism (33), its characterized in that:
the device comprises a bearing seat (1), wherein a crawler belt (2) with a driving device is arranged in the middle of the lower end face of the bearing seat (1), electric telescopic columns (3) are fixed on the left side and the right side of the lower end face of the bearing seat (1), the bottoms of the electric telescopic columns (3) are connected with a supporting plate (4), a control chamber (6) and a fixing seat (7) are respectively fixed on the left side and the right side of the upper end face of the bearing seat (1), a ladder (12) is arranged on the right side of the front end face of the fixing seat (7), a rotary table (15) is rotatably connected on the left side of the upper end face of the fixing seat (7), a rotary plate (16) and a first hydraulic cylinder (18) are rotatably connected on the left side and the right side of the upper end face of the rotary table (15), the upper side of the first hydraulic cylinder (18) is connected with the rotary plate (16) through a first piston rod (20), and a second hydraulic cylinder (21) is fixed on the left inner wall of the rotary plate (16), the right side of the second hydraulic cylinder (21) is connected with a moving plate (23) through a second piston rod (22), the right side of the moving plate (23) is rotatably connected with a rotating sleeve (26), the inner side of the rotating sleeve (26) is rotatably connected with a convex block (29), the convex block (29) is fixed on the left end face of the manned platform (30), and the front side of the manned platform (30) is rotatably connected with a rotating door (31);
a rain-shielding mechanism (33), wherein the rain-shielding mechanism (33) is arranged on the top of the manned platform (30).
2. The telescopic boom crawler type aerial work platform of claim 1, wherein: the support plate (4) is rotatably connected to the bottom of the electric telescopic column (3) through a stud bolt (5), the electric telescopic column (3) and the support plate (4) are provided with four, and the four electric telescopic columns (3) are symmetrically arranged about a vertical central axis of the bearing seat (1).
3. The telescopic boom crawler type aerial work platform of claim 1, wherein: the lower end face of the fixing seat (7) is provided with a groove (8), a generator (9) is arranged in the groove (8), the generator (9) is fixed on the bearing seat (1), net covers (10) are arranged on the front side and the rear side of the generator (9), and the net covers (10) are fixed on the fixing seat (7) through fixing bolts (11).
4. The telescopic boom crawler type aerial work platform of claim 1, wherein: the first motor (13) is fixed in the fixed seat (7), and the upper side of the first motor (13) is rotatably connected with a rotary table (15) through a first motor shaft (14).
5. The telescopic boom crawler type aerial work platform of claim 1, wherein: the rotating plate (16) is rotatably connected to the rotating table (15) through a first shaft lever (17).
6. The telescopic boom crawler type aerial work platform of claim 1, wherein: the left end of the first hydraulic cylinder (18) is rotatably connected to the rotary table (15) through a second shaft lever (19), and the right end of the first piston rod (20) is rotatably connected to the rotary plate (16) through the second shaft lever (19).
7. The telescopic boom crawler type aerial work platform of claim 1, wherein: the bottom on the right side of the moving plate (23) is fixedly provided with a second motor (24), the upper side of the second motor (24) is rotatably connected with a rotating sleeve (26) through a second motor shaft (25), the front side of the rotating sleeve (26) is fixedly provided with a third motor (27), and the rear side of the third motor (27) is rotatably connected with a bump (29) through a third motor shaft (28).
8. The telescopic boom crawler type aerial work platform of claim 1, wherein: the revolving door (31) is rotatably connected to the manned platform (30) through a hinge (32).
9. The telescopic boom crawler type aerial work platform of claim 1, wherein: rain gear (33) include first motor (3301), revolving rack (3302), second motor (3303) and keep off canopy (3304), and first motor (3301) are fixed at the left front side in manned platform (30) top, and the rear side rotation of first motor (3301) is connected with revolving rack (3302) simultaneously, the front side at revolving rack (3302) top is fixed with second motor (3303), and the rear side rotation of second motor (3303) is connected with keeps off canopy (3304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564064.4A CN113173539A (en) | 2021-05-24 | 2021-05-24 | Telescopic boom crawler-type aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564064.4A CN113173539A (en) | 2021-05-24 | 2021-05-24 | Telescopic boom crawler-type aerial work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113173539A true CN113173539A (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110564064.4A Pending CN113173539A (en) | 2021-05-24 | 2021-05-24 | Telescopic boom crawler-type aerial work platform |
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| Country | Link |
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| CN (1) | CN113173539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408825A (en) * | 2022-01-25 | 2022-04-29 | 徐工消防安全装备有限公司 | Arm type aerial work platform control system and method and arm type aerial work platform |
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| CN207632459U (en) * | 2017-11-07 | 2018-07-20 | 子西租赁股份有限公司 | A kind of crank type aerial working platform |
| CN213085415U (en) * | 2020-09-18 | 2021-04-30 | 山东松浦机械科技有限公司 | High-altitude operation platform with high practicability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102140851A (en) * | 2010-02-01 | 2011-08-03 | 神钢建设机械株式会社 | Working machine |
| CN101780933A (en) * | 2010-02-09 | 2010-07-21 | 浙江机电职业技术学院 | Lift truck available for field operation |
| CN203545616U (en) * | 2013-10-28 | 2014-04-16 | 武文阳 | Movable aerial work platform |
| CN104891396A (en) * | 2015-04-18 | 2015-09-09 | 湖南厚德重工机械有限公司 | Telescopic arm crawler type aerial work platform |
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| CN114408825A (en) * | 2022-01-25 | 2022-04-29 | 徐工消防安全装备有限公司 | Arm type aerial work platform control system and method and arm type aerial work platform |
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Application publication date: 20210727 |
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