CN110761702A - Aircraft engine maintenance work ladder - Google Patents
Aircraft engine maintenance work ladder Download PDFInfo
- Publication number
- CN110761702A CN110761702A CN201910938358.1A CN201910938358A CN110761702A CN 110761702 A CN110761702 A CN 110761702A CN 201910938358 A CN201910938358 A CN 201910938358A CN 110761702 A CN110761702 A CN 110761702A
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- Prior art keywords
- ladder
- frame
- fixed
- lifting
- section
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/24—Non-hinged free-standing ladders
- E06C1/28—Non-hinged free-standing ladders multi-part
- E06C1/30—Non-hinged free-standing ladders multi-part extensible, e.g. telescopic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/40—Maintaining or repairing aircraft
-
- 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
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
- E06C7/04—Hand-operated extending means carried by the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/06—Securing devices or hooks for parts of extensible ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/12—Lifts or other hoisting devices on ladders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Ladders (AREA)
Abstract
The invention provides an aircraft engine maintenance working ladder, when in use, according to the size of an aircraft engine to be overhauled, a self-locking hand winch is shaken to roll a steel wire rope back and forth, due to the action of a fixed pulley, a steel wire rope of which the tail end is fixed on a fixed bolt drags a lifting ladder section to ascend upwards, so that the height of a hanger close to a platform is raised to a certain height, and the locking of the height of the hanger close to the platform is realized due to the self-locking of the self-locking hand winch, so that the space between a first core machine close platform and the hanger close platform can be enough for the size of the aircraft engine to be accommodated, and an overhaul worker can stand on the first core machine close platform to be close to the two sides of the aircraft engine and can also be close to the hanger.
Description
Technical Field
The invention relates to an equipment maintenance working ladder, in particular to an aircraft engine maintenance working ladder.
Background
The maintenance and repair of the equipment on the airplane can improve the flight feasibility of the airplane and ensure the safety of the airplane, and the maintenance and repair of the equipment are the preconditions and the necessary conditions for the use of the airplane and are also important components of the aviation industry.
Aircraft maintenance operations require maintenance personnel to access various parts of the aircraft, where access to the engine area has been a major challenge in the field of aircraft maintenance. Particularly, the highest point in the engine and the hanger area are difficult to meet the working requirement of the common ladder frame due to the special shape and narrow space.
The existing airplane engine maintenance work ladder has a simple structure and a single function. If a user needs to access different parts of the engine and needs to push a plurality of same or different ladders to be placed around the engine, the tensed space around the engine is more oppressed, interference can be generated among the ladders or between the ladders and the cowling opened by the engine, and the maintenance personnel can not conveniently move.
Disclosure of Invention
The invention aims to solve the technical problem of providing a maintenance work ladder which can be simultaneously suitable for a plurality of maintenance parts of aircraft engines of different types.
The technical scheme adopted by the invention is as follows:
an aircraft engine service work ladder, characterized by comprising:
the ladder frame is a horizontal rectangular frame, the bottom of the ladder frame is provided with universal traveling wheels, and one end of the ladder frame is provided with a first core machine approaching platform;
the bottom end of the fixed ladder section is fixed at the other end of the ladder frame, and the top of the fixed ladder section is inclined inwards relative to the ladder frame;
the bottom end of the support frame is fixed in the middle of the ladder frame, the upper end of the support frame inclines towards the lower part of the fixed ladder section and is fixedly connected with the lower part of the fixed ladder section through connecting plates on two sides, and spaces are reserved among the upper end of the support frame, the two connecting plates and the lower part of the fixed ladder section;
the lifting ladder section consists of a lifting section parallel to the inclined part of the fixed ladder section and a horizontal hanger approach platform fixed at the top of the lifting section; the lifting section penetrates through a space formed by the upper end of the support frame, the two connecting plates and the lower part of the fixed ladder section, and is supported with the upper end of the support frame and the bottom surface of the lifting section in a sliding mode through a support frame slide block guide rail mechanism;
the lifting locking mechanism comprises a fixed bolt arranged at the bottom end of the lifting ladder section, a self-locking hand winch arranged on one side of the supporting frame facing the lifting ladder section and a fixed pulley which is positioned on the self-locking hand winch and fixed on one side of the supporting frame facing the lifting ladder section; the fixed pulley is higher than the fixed bolt; and a steel wire rope of the self-locking hand winch bypasses the fixed pulley, and the tail end of the self-locking hand winch is fixed on the fixed bolt.
When the self-locking hand winch is used, the self-locking hand winch is shaken to roll a steel wire rope back and forth according to the size of an aircraft engine to be overhauled, the steel wire rope fixed to the fixing bolt at the tail end of the self-locking hand winch drags the elevator ladder section to ascend upwards under the action of the fixed pulley, so that the height of the approach platform of the hanger is increased to a certain height, the height of the approach platform of the hanger is locked due to self-locking of the self-locking hand winch, the space between the approach platform of the first core machine and the approach platform of the hanger can be enough for the size of the aircraft engine to be accommodated, and an overhaul worker can stand on the approach platform of the first core machine to approach two sides of the aircraft engine and can approach the.
In order to avoid the safety risk caused by instant sliding of the elevator ladder section due to fracture caused by fatigue of the steel wire rope after long-term use, the invention is further improved as follows:
the lifting locking mechanism further comprises a rack arranged on one side of the lifting ladder section facing the ladder frame and a double-layer ratchet wheel which is coaxially and synchronously arranged on the support frame, the direction of lower-layer gear teeth of the double-layer ratchet wheel is the climbing direction of the lifting ladder section and is meshed with the rack, and the direction of upper-layer gear teeth is opposite to the direction of lower-layer gear teeth; the double-layer ratchet wheel locking device comprises a double-layer ratchet wheel, a rotating shaft of the double-layer ratchet wheel, a hook portion of the double-layer ratchet wheel locking device is clamped on upper-layer gear teeth, the rotating shaft of the double-layer ratchet wheel locking device is fixed on a support frame, a spring is sleeved on the rotating shaft, and the other end of the double-layer ratchet wheel is connected with an unlocking pull ring arranged on the support frame through a.
As a further improvement of the present invention, the first core approaching platform is a screw lifting platform, which comprises: the device comprises a square frame-shaped base, a top horizontal plate, a middle lifting frame and a lead screw nut linear motion mechanism; the lifting frame is a pair of double rods hinged from the lifting frame, the double rods are symmetrically arranged, two lower ends in the same direction are respectively hinged to one end of each longitudinal beam of the square frame, the other two lower ends in the same direction are slidably supported on the slide rails on the two longitudinal beams of the square frame, two upper ends in the same direction are respectively hinged to one end of the bottom surface of the top horizontal plate, and the other two upper ends in the same direction are slidably supported on the slide rails on the bottom surface of the top horizontal plate; the screw rod nut linear motion mechanism is arranged on the base and drives the two slidable lower ends of the lifting frame to move so as to lift the top horizontal plate; the base is transversely supported on the slide rails on the top surfaces of the two longitudinal beams of the ladder frame in a sliding manner.
During the use, the lead screw elevating platform can follow the ladder frame guide rail moves on the ladder frame, according to the size of engine, removes lead screw elevating platform to one side of engine core machine to rise to a take the altitude according to maintainer's needs, overhaul to the core machine of engine with the convenience.
When a maintainer overhauls the core engine of the engine, the maintainer needs to walk back and forth on two sides of the engine, so that the position of the screw rod lifting platform needs to be frequently adjusted, and the maintenance efficiency is reduced, therefore, the invention is further improved: the ladder frame is also provided with a second core machine approaching platform which is the same as the first core machine approaching platform, and the second core machine approaching platform and the first core machine approaching platform are arranged in parallel. So the maintainer can remove it respectively to the both sides of engine to conveniently overhaul the core machine.
Furthermore, at least two pairs of supporting legs are arranged on two sides of the ladder frame and fixed through a screwed pipe fixed on the side wall of the ladder frame, and a screw is arranged in the middle of each supporting leg and screwed into the screwed pipe.
Furthermore, a push-pull plate is arranged below the hanger close to the platform.
Further, fixed bench and lift bench all are provided with can dismantle the handrail.
Furthermore, one end of the ladder frame, which is positioned on the fixed ladder section, is provided with a towing rod.
The invention has the following beneficial effects:
(1) the working ladder can penetrate through the bottom of the engine due to the fact that the ladder frame is short, and the lifting ladder sections are lifted up or lowered down through moving, so that the areas defined by the ladder frame, the lifting ladder sections and the hanging bracket close to the platforms can accommodate engines of different sizes, and the engine cowling can be opened and closed conveniently;
(2) the self-locking hand winch can automatically lock the height of the hanger close to the platform, and the safety is further improved through mechanisms such as the rack and the ratchet wheel;
(3) through the lead screw lift platform on the ladder frame, maintainer can remove to one side or both sides of engine to rise to specific height as required, covered the most region of engine core machine, also simultaneously because the gallows is close the platform and can go up and down along with the elevator section, just also covered engine gallows department and the most region of wing, finally reduced the change frequency of work ladder, reduced the demand to single function work ladder, and then improved labor efficiency.
Drawings
FIG. 1 is a schematic front view of the structure of the present embodiment;
fig. 2 is a schematic perspective view of the structure of the guide rail mechanism between the elevator sections and the support frame according to the embodiment;
FIG. 3 is a schematic structural view of the installation position of the lift lock mechanism of the present embodiment;
FIG. 4 is a schematic structural view of the double-layer ratchet of the lift locking mechanism of the present embodiment when locked;
FIG. 5 is a schematic structural view of a double-layer ratchet of the lift locking mechanism of the present embodiment when unlocking;
fig. 6 is a schematic structural view of the screw lifting platform of the present embodiment on the ladder rack;
FIG. 7 is a schematic view of the present embodiment in use in proximity to an aircraft engine;
fig. 8 is a perspective view of the guide rail mechanism between the elevator sections and the supporting frame according to the embodiment;
fig. 9 is a schematic structural diagram of the screw lifting table of the embodiment.
Wherein: 1-a ladder frame; 2-universal traveling wheels; 3-fixing the ladder sections; 4-a support frame; 5-supporting feet; 501-screw rod; 6-a coil; 7-a lifting ladder section; 701-a fixing bolt; 702-a rack; 8-double layer ratchet; 801-lower layer gear teeth; 802-upper gear teeth; 9-non-return pawl; 901-hook; 902-a stem portion; 903-a rotating shaft; 904-spring; 10-a detachable armrest; 11-a push-pull plate; 12-a tow bar; 13-self-locking hand winch; 14-a steel cord; 15-a fixed pulley; 16-cradle approach platform; 17-a carriage slide guide rail mechanism; 18-ladder rack slider guide rail mechanisms; 19-a screw lifting platform; 20-unlocking the tab; 21-a pull rope; 22-an engine; 23-a fairing; 23-a connecting plate; 24-a base; 25-top horizontal plate; 26-a lifting frame; 27-a screw nut linear motion mechanism.
Detailed Description
Referring to fig. 1, the aircraft engine 22 maintenance work ladder comprises a ladder frame 1 provided with two pairs of universal traveling wheels 2 at the bottom, a fixed ladder section 3 fixed at one end of the ladder frame 1 at the bottom end, and the fixed ladder section 3 and a support frame 4 are connected through a connecting plate 23 (the dotted line in the figure is the installation position of the connecting plate, and the specific structural form of an installation plate 23 refers to fig. 8), so that the ladder frame 1, the fixed ladder section 3 and the support frame 4 form a triangular frame.
At least two pairs of supporting legs 5 are arranged on two sides of the ladder frame 1, the supporting legs 5 are fixed through a screwed pipe 6 fixed on the side wall of the ladder frame 1, a screw 501 is arranged in the middle of each supporting leg 5, the screw 501 of each supporting leg 5 is screwed into the screwed pipe 6, the bottom of each supporting leg 5 is tightly abutted to the ground through rotation of the supporting legs 5, and the underframe is fixed relative to the ground.
A lifting ladder section 7 is arranged below the fixed ladder section 3, the lifting ladder section 7 is arranged at the upper end of the support frame 4 in a space between the two connecting plates 23 and the lower part of the fixed ladder section 3 in a penetrating manner, the lifting ladder section 7 is supported by the support frame 4, and the lifting ladder section 7 and the support frame 4 are slidably supported by the support frame slider guide rail mechanisms 17, as shown in fig. 2, so that the lifting ladder section 7 can move up and down along the guide rail, the lifting of the lifting ladder section 7 is realized, and in order to avoid the overturn of a maintenance ladder, the guide rail sliding distance of the support frame slider guide rail mechanisms 17 corresponding to the maximum lifting height of the lifting ladder section 7 is not more than one third of the length of the lifting ladder section 7.
A hanger approaching platform 16 is arranged at the top of the elevator section 7, so that maintenance personnel can overhaul the hanger area of the engine 22; fixed bench section 3 and elevator section 7 all are provided with the detachable handrail, can guarantee maintenance personal's safety, can make maintenance work ladder when needs are close aircraft wing bottom again, pull down the handrail, make the work ladder can be applicable to the work of wing bottom simultaneously.
A push-pull plate 11 is arranged below the platform 16, and the push-pull plate can slide towards the direction of the hanger, so that the push-pull plate can extend outwards for a certain distance, and then maintenance personnel can more easily approach the position of the large wing of the airplane, which is close to the cabin.
One section that ladder frame 1 is located fixed bench 3 installs tow bar 12, makes things convenient for the trailer to drag the line to this maintenance work ladder.
The specific structure of the lifting locking mechanism is shown in fig. 3, in the triangular frame, a self-locking hand winch 13 is fixed in the middle of the side of the supporting frame 4, a fixed pulley 15 is arranged at the top of the side of the supporting frame 4, a fixed bolt 701 is installed at the bottom of the lifting ladder section 7 facing the side of the ladder frame 1, and a steel wire rope 14 of the self-locking hand winch 13 bypasses the fixed pulley 15 and is bound on the fixed bolt 701.
Referring to fig. 4-5, the lift locking mechanism further includes a rack 702 disposed on a side of the lift ladder section 7 facing the ladder rack 1; the rotatable double-layer ratchet wheel 8 is arranged on the support frame, the direction of lower-layer gear teeth 801 of the double-layer ratchet wheel 8 is the climbing direction of the elevator ladder section 7 and is meshed with the rack 702, and the direction of upper-layer gear teeth 802 is opposite to the direction of the lower-layer gear teeth 801; the non-return pawl 9 for locking the double-layer ratchet 8 is provided with a hook part 901 which is clamped on the upper gear teeth 802, a rotating shaft 903 of the non-return pawl 9 is fixed on the support frame 4, the rotating shaft 903 is sleeved with a spring 904, and the tail end of a rod part 902 of the non-return pawl 9 is connected with an unlocking pull ring 20 arranged on the support frame 4 through a pull rope 21. When locking, the position of the non-return pawl 9 is as shown in fig. 4, when the self-locking hand winch 13 is shaken to make the elevator section 7 climb, the rack 702 drives the double-layer ratchet wheel 8 to rotate, the elevator section 7 stops shaking the self-locking hand winch 13 after climbing to a specific height, the hook portion 901 of the non-return pawl 9 can automatically block the upper gear teeth 802 of the double-layer ratchet wheel 8 under the elastic force of the spring 904, so as to lock the elevator section 7, thereby avoiding safety accidents caused by instant sliding off of the elevator section 7 due to breakage of the steel wire rope 14, and the unlocking pull ring 20 is moved during unlocking, so that the non-return pawl 9 rotates, as shown in fig. 5, separation of the hook portion 901 from the upper gear teeth 802 is realized, and then the elevator section 7 can be lowered by shaking the self-.
Referring to fig. 6, the ladder rack 1 is provided with two lead screw lifting platforms 19, which are respectively used as a first core machine approaching platform and a second core machine approaching platform, and are both lead screw lifting platforms, as shown in fig. 9, the ladder rack comprises a square frame-shaped base 24, a top horizontal plate 25, a middle lifting rack 26 and a lead screw nut linear motion mechanism 27; the lifting 26 frame is a pair of double rods hinged from the middle, the double rods are symmetrically arranged, two lower ends in the same direction are respectively hinged at one end of two longitudinal beams of the square frame-shaped base 24, the other two lower ends in the same direction are slidably supported on slide rails 28 on the two longitudinal beams of the square frame-shaped base 24, two upper ends in the same direction are respectively hinged at one end of the bottom surface of the top horizontal plate 25, and the other two upper ends in the same direction are slidably supported on the slide rails on the bottom surface of the top horizontal plate 25; the screw nut linear motion mechanism 27 is arranged on the base 24 and drives the two slidable lower ends of the lifting frame 26 to move so as to lift the top horizontal plate 25; the base 24 is slidably and transversely supported on the guide rails on the top surfaces of the two longitudinal beams of the ladder frame 1, so that the screw rod lifting platform 19 can move on the ladder frame 1 along the guide rails arranged on the ladder frame 1.
Referring to fig. 7, the working ladder can pass through the bottom of the engine 22 due to the short ladder frame 1, and the elevator sections 7 can be lifted up or lowered down by moving, so that the area enclosed among the ladder frame 1, the elevator sections 7 and the hanger access platform 16 can accommodate engines 22 with different sizes, and the opening and closing of the cowling 23 of the engines 22 are facilitated.
Claims (8)
1. An aircraft engine service work ladder, characterized by comprising:
the ladder frame is a horizontal rectangular frame, the bottom of the ladder frame is provided with universal traveling wheels, and one end of the ladder frame is provided with a first core machine approaching platform;
the bottom end of the fixed ladder section is fixed at the other end of the ladder frame, and the top of the fixed ladder section is inclined inwards relative to the ladder frame;
the bottom end of the support frame is fixed in the middle of the ladder frame, the upper end of the support frame inclines towards the lower part of the fixed ladder section and is fixedly connected with the lower part of the fixed ladder section through connecting plates on two sides, and spaces are reserved among the upper end of the support frame, the two connecting plates and the lower part of the fixed ladder section;
the lifting ladder section consists of a lifting section parallel to the inclined part of the fixed ladder section and a horizontal hanger approach platform fixed at the top of the lifting section; the lifting section penetrates through a space formed by the upper end of the support frame, the two connecting plates and the lower part of the fixed ladder section, and is supported with the upper end of the support frame and the bottom surface of the lifting section in a sliding mode through a support frame slide block guide rail mechanism;
the lifting locking mechanism comprises a fixed bolt arranged at the bottom end of the lifting ladder section, a self-locking hand winch arranged on one side of the supporting frame facing the lifting ladder section and a fixed pulley which is positioned on the self-locking hand winch and fixed on one side of the supporting frame facing the lifting ladder section; the fixed pulley is higher than the fixed bolt; and a steel wire rope of the self-locking hand winch bypasses the fixed pulley, and the tail end of the self-locking hand winch is fixed on the fixed bolt.
2. The service work ladder of claim 1, wherein: the lifting locking mechanism further comprises a rack arranged on one side of the lifting ladder section facing the ladder frame and a double-layer ratchet wheel which is coaxially and synchronously arranged on the supporting frame, the direction of lower-layer gear teeth of the double-layer ratchet wheel is the climbing direction of the lifting ladder section and is meshed with the rack, and the direction of upper-layer gear teeth is opposite to the direction of lower-layer gear teeth; the non-return pawl is used for locking the double-layer ratchet wheel, the hook portion of the non-return pawl is clamped on the upper-layer gear teeth, the rotating shaft is fixed on the support frame, the rotating shaft is sleeved with a spring, and the other end of the non-return pawl is connected with an unlocking pull ring arranged on the support frame through a pull rope.
3. A service ladder as claimed in claim 1 or 2, wherein: first core machine is close the platform and is the lead screw elevating platform, and it includes: the device comprises a square frame-shaped base, a top horizontal plate, a middle lifting frame and a lead screw nut linear motion mechanism; the lifting frame is a pair of double rods hinged from the lifting frame, the double rods are symmetrically arranged, two lower ends in the same direction are respectively hinged to one end of each longitudinal beam of the square frame, the other two lower ends in the same direction are slidably supported on the slide rails on the two longitudinal beams of the square frame, two upper ends in the same direction are respectively hinged to one end of the bottom surface of the top horizontal plate, and the other two upper ends in the same direction are slidably supported on the slide rails on the bottom surface of the top horizontal plate; the screw rod nut linear motion mechanism is arranged on the base and drives the two slidable lower ends of the lifting frame to move so as to lift the top horizontal plate; the base is transversely supported on the slide rails on the top surfaces of the two longitudinal beams of the ladder frame in a sliding manner.
4. The service work ladder of claim 3, wherein: the ladder frame is also provided with a second core machine approaching platform which is the same as the first core machine approaching platform, and the second core machine approaching platform and the first core machine approaching platform are arranged in parallel.
5. The service work ladder of claim 4, wherein: at least two pairs of supporting legs are arranged on two sides of the ladder frame and fixed through a screwed pipe fixed on the side wall of the ladder frame, and a screw is arranged in the middle of each supporting leg and screwed into the screwed pipe.
6. The service work ladder of claim 5, wherein: and a push-pull plate is arranged below the hanger close to the platform.
7. The service work ladder of claim 6, wherein: the fixed bench and the lifting bench are both provided with detachable handrails.
8. The service work ladder of claim 7, wherein: one end of the ladder frame, which is positioned at the fixed ladder section, is provided with a towing rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938358.1A CN110761702A (en) | 2019-09-30 | 2019-09-30 | Aircraft engine maintenance work ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938358.1A CN110761702A (en) | 2019-09-30 | 2019-09-30 | Aircraft engine maintenance work ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110761702A true CN110761702A (en) | 2020-02-07 |
Family
ID=69329107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910938358.1A Pending CN110761702A (en) | 2019-09-30 | 2019-09-30 | Aircraft engine maintenance work ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110761702A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112374400A (en) * | 2020-12-02 | 2021-02-19 | 青岛海润诺达工业装备有限公司 | Portable hand lift stair |
| CN112814556A (en) * | 2020-12-29 | 2021-05-18 | 郭娇龙 | Multifunctional adjustable aluminum alloy climbing frame and use method thereof |
| CN113202406A (en) * | 2021-03-25 | 2021-08-03 | 周欣欣 | Supporting structure for electric power overhaul |
| CN113800440A (en) * | 2021-09-03 | 2021-12-17 | 彭玉保 | Communication engineering is with cat ladder that has safeguard function |
| CN114508299A (en) * | 2022-02-16 | 2022-05-17 | 深圳市倍斯特检测技术服务有限公司 | Lifting device for detecting faults of illuminating lamp line |
| CN117486120A (en) * | 2023-12-25 | 2024-02-02 | 江苏蓝航仿真科技有限公司 | Lifting equipment for aircraft weather radome |
-
2019
- 2019-09-30 CN CN201910938358.1A patent/CN110761702A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112374400A (en) * | 2020-12-02 | 2021-02-19 | 青岛海润诺达工业装备有限公司 | Portable hand lift stair |
| CN112814556A (en) * | 2020-12-29 | 2021-05-18 | 郭娇龙 | Multifunctional adjustable aluminum alloy climbing frame and use method thereof |
| CN113202406A (en) * | 2021-03-25 | 2021-08-03 | 周欣欣 | Supporting structure for electric power overhaul |
| CN113800440A (en) * | 2021-09-03 | 2021-12-17 | 彭玉保 | Communication engineering is with cat ladder that has safeguard function |
| CN114508299A (en) * | 2022-02-16 | 2022-05-17 | 深圳市倍斯特检测技术服务有限公司 | Lifting device for detecting faults of illuminating lamp line |
| CN117486120A (en) * | 2023-12-25 | 2024-02-02 | 江苏蓝航仿真科技有限公司 | Lifting equipment for aircraft weather radome |
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