CN211737021U - Multifunctional ladder frame for aircraft maintenance - Google Patents

Abstract

A multifunctional ladder frame for aircraft maintenance comprises a base, a primary ladder frame, a secondary ladder frame and a steering ladder frame. The primary ladder frame is hinged to the tail of the base, the middle rear part of the base is provided with a telescopic cylinder, and the primary ladder frame is provided with a lifting device; the second-level ladder frame is arranged in a first sliding groove of the first-level ladder frame, and a steering device is arranged at the top of the second-level ladder frame. The steering device comprises two steering mounting seats which are fixedly arranged at the top of the secondary ladder frame respectively, mounting holes are formed in the steering mounting seats, a second rotating shaft is rotatably arranged in the mounting holes, a second gear and a second hand wheel are arranged at two ends of the second rotating shaft respectively, two ladder frame jacks are further arranged in the second rotating shaft, and the steering ladder frame can be inserted into the ladder frame jacks and fastened. This multi-functional ladder frame accessible telescoping cylinder adjusts the inclination of one-level ladder frame, adjusts the lift height of second grade ladder frame, adjusts the deflection angle of bogie ladder frame through the steering gear through elevating gear, and many parts all have regulatory function, and the suitability is strong.

Description

Multifunctional ladder frame for aircraft maintenance

Technical Field

The utility model relates to an aircraft ground overhauls the field, concretely relates to multi-functional ladder frame that aircraft maintenance was used.

Background

At present, when the ground maintenance is carried out on an airplane, various upright ladder frames with various models and different lengths are often needed to be used simultaneously. These conventional maintenance ladder frames have many disadvantages due to their fixed height, and are inconvenient in practical use. Such as: the mobile phone cabin occupies more cabin space, is not well attached to maintenance points at individual height positions, has different use effects for people with different heights, has poor moving performance, high manufacturing cost and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome shortcoming and not enough among the prior art, provide a multi-functional ladder frame that aircraft maintenance was used, its accessible telescopic link adjusts the inclination of one-level ladder frame, adjusts the lift height of second grade ladder frame, adjusts the deflection angle that turns to the ladder frame through the steering gear, and many positions all have regulatory function, and applicable in the aircraft maintenance work of the different regions of different models or same model, the suitability is strong.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model provides a multi-functional ladder frame that aircraft maintenance was used, includes base, one-level ladder frame, second grade ladder frame and bogie ladder frame, one-level ladder frame is installed on the base, and is provided with elevating gear on the one-level ladder frame, and second grade ladder frame is installed in the first spout of one-level ladder frame, and the top of second grade ladder frame is provided with the device that turns to, bogie ladder frame is installed on the device that turns to, further:

the telescopic rod of the telescopic cylinder is connected with the primary ladder frame;

the primary ladder frame comprises two first vertical plates which are arranged in parallel, the lower ends of the first vertical plates are hinged to the tail of the base, first sliding grooves are formed in the inner sides of the two first vertical plates, and the first sliding grooves are formed along the long edge direction of the first vertical plates;

the two-stage ladder frame comprises two second vertical plates which are arranged in parallel, the second vertical plates are convex plates, the convex parts of the second vertical plates are installed in the first sliding grooves in a matching mode, racks are arranged on one sides of the two second vertical plates facing the lifting device, and the racks are arranged along the long edge direction of the second vertical plates;

the lifting device comprises a first rotating shaft transversely arranged on the front sides of the two first vertical plates, and two first gears are arranged on the first rotating shaft at intervals and are respectively meshed with the two racks on the second vertical plate; one end of the first rotating shaft is fixedly connected with a first hand wheel;

the steering device comprises two steering mounting seats which are fixedly arranged at the top of the second vertical plate respectively, the two steering mounting seats have the same structure and are mirror images of each other, a mounting hole which is in the same direction with the pedal is formed in the center of the side face of each steering mounting seat, a second rotating shaft is rotatably mounted in each mounting hole, second hand wheels are arranged at two ends of each second rotating shaft respectively, two ladder frame jacks which cross the periphery of the second rotating shaft are symmetrically arranged on each second rotating shaft, and the steering ladder frame can be inserted into the ladder frame jacks and fastened.

Furthermore, two ends of the second rotating shaft are respectively provided with a second gear, the second gear is arranged side by side with the second hand wheel, and the second gear is positioned at the inner side close to the steering installation seat.

Furthermore, the second hand wheel, the second gear, the second rotating shaft and the bogie ladder frame are fixedly connected into a whole.

Further, second handles are uniformly arranged on the second hand wheel in the circumferential direction; first handles are uniformly arranged on the first hand wheel in the circumferential direction.

Furthermore, a second pin hole is formed in the side face of the steering mounting seat, a second bolt can be inserted into the second pin hole, and the second bolt can extend out to a position between two adjacent second handles.

Further, a T-shaped brake groove is formed in the steering mounting seat, a T-shaped brake block can be manually inserted into the T-shaped brake groove, and when the T-shaped brake block slides to the lower end of the T-shaped brake groove, the T-shaped brake block can be clamped between two adjacent sawteeth of the second gear.

Furthermore, a first pin hole is formed in the side face of the first vertical plate, a first bolt can be inserted into the first pin hole, and the first bolt can extend out to a position between two adjacent first handles.

Furthermore, the whole appearance of the bogie ladder frame is arched, and the bogie ladder frame is also provided with handrails.

Furthermore, the base is of a frame structure, walking wheels are arranged at four corners of the base, and a traction rod is arranged at the head of the base.

Furthermore, a pedal rod is arranged on the rear side surface of the first vertical plate.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1) the multifunctional ladder frame has the advantages that the inclination angle of the primary ladder frame is adjusted through the telescopic cylinder, the lifting height of the secondary ladder frame is adjusted through the lifting device, and the deflection angle of the steering ladder frame is adjusted through the steering device, and multiple parts of the multifunctional ladder frame have adjusting functions, so that the multifunctional ladder frame can be quickly close to the airplane maintenance position as far as possible, and the multifunctional ladder frame is suitable for airplane maintenance work of different airplane types or different regions of the same airplane type and has strong applicability;

2) the steering device can be achieved by a) mode: the second bolt is matched with the second pin hole to adjust the deflection angle of the steering ladder frame; also by means of b): the T-shaped brake block is matched with the T-shaped brake groove to adjust the deflection angle of the bogie ladder; the deflection angle of the bogie can be adjusted by simultaneously combining the modes a) and b), the adjustment modes are various, and meanwhile, the potential safety hazard caused by accidental failure of one adjustment mode is avoided, and the safety is high;

3) the multifunctional ladder frame is simple and convenient to operate in adjusting the inclination angle, the lifting height and the deflection angle, and can improve the working efficiency and reduce the working difficulty;

4) the multifunctional ladder frame has the advantages of simple structure, low manufacturing cost, small size and small occupied space, and can be contracted to a small size after the inclination angle, the lifting height and the deflection angle are adjusted, thereby being convenient for storage.

In order that the invention may be more clearly understood, preferred embodiments of the invention will now be described with reference to the accompanying drawings.

Drawings

Fig. 1 and fig. 2 are schematic perspective views of the present invention with different viewing angles;

fig. 3 is a schematic side view of the present invention;

fig. 4 is an assembly schematic view of the present invention;

fig. 5 is an assembly view of the steering device of the present invention;

fig. 6 is a schematic view of the operation principle of the steering device of the present invention;

fig. 7 is a reference diagram of the usage status of the present invention.

Description of reference numerals: 1-a base, 11-a traveling wheel, 12-a traction rod and 13-a telescopic cylinder; 2-a first-level ladder frame, 21-a first vertical plate, 22-a pedal rod and 23-a first sliding groove; 3-a secondary ladder frame, 31-a second vertical plate and 32-a rack; 4-a lifting device, 41-a first rotating shaft, 42-a first gear, 43-a first hand wheel and 45-a first bolt; 5-a steering device, 51-a steering mounting base, 52-a mounting hole, 53-a second rotating shaft, 54-a second gear, 55-a second hand wheel, 56-a ladder rack jack, 57-a second bolt, 58-T type brake grooves and 59-T type brake blocks; 6-bogie ladder 61-handrail; 100-the multifunctional ladder frame for maintaining the airplane.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Please refer to fig. 1 to 7 simultaneously, the utility model discloses a multi-functional ladder frame 100 that aircraft maintenance used, including base 1, one-level ladder frame 2, second grade ladder frame 3 and bogie 6, one-level ladder frame 2 is installed on base 1, and is provided with elevating gear 4 on the one-level ladder frame 2, and second grade ladder frame 3 is installed in the first spout 23 of one-level ladder frame 2 to go up and down under the control of elevating gear 4 and the direction of first spout 23, the top of second grade ladder frame 3 is provided with steering gear 5, is provided with second pivot 53 in this steering gear 5, bogie 6 is installed on steering gear 5 to can be rotatory round the second pivot 53 of steering gear 5.

The base 1 is of a frame structure, and traveling wheels 11 are arranged at four corners of the base 1; the head of the base 1 is provided with a traction rod 12 which is convenient to be hung on a tractor; the middle rear part of the base 1 is provided with a telescopic cylinder 13, and a telescopic rod of the telescopic cylinder 13 is connected with the primary ladder frame 2.

One-level ladder frame 2, it includes two parallel arrangement's first riser 21, and the lower extreme of first riser 21 articulates the afterbody of base 1, under the telescopic action of telescoping cylinder 13, this one-level ladder frame 2 can deflect round the articulated shaft. The inner sides of the two first vertical plates 21 of the primary ladder frame 2 are respectively provided with a first sliding chute 23, the first sliding chutes 23 are arranged along the long side direction of the first vertical plates 21, and the first sliding chutes 23 are used for installing the secondary ladder frame 3; a foot bar 22 is arranged on the rear side surface of the first vertical plate 21 of the first-level ladder frame 2 for people to step on for climbing; and a lifting device 4 transversely arranged in the middle of the two first vertical plates 21 is arranged on the other side, opposite to the pedal rod 22, of the two first vertical plates 21 of the first-level ladder frame 2, and the lifting device 4 is used for controlling the lifting of the second-level ladder frame 3.

Second grade ladder frame 3, it includes two parallel arrangement's second riser 31, and this second riser 31 is the convex plate, and the bulge matching of second riser 31 is installed in first spout 23, be connected with the footboard that supplies the people to step on the height between two second risers 31, the facing of two second risers 31 one side of elevating gear 4 all is provided with rack 32, this rack 32 along the long limit direction setting of second riser 31, and the first gear 42 meshing in this rack 32 and the elevating gear 4.

The lifting device 4 comprises a first rotating shaft 41 transversely erected on the front sides of the two first vertical plates 21, and two first gears 42 arranged on the first rotating shaft 41 at intervals are respectively meshed with the two racks 32 on the second vertical plate 31 of the secondary ladder frame 3; one end of the first rotating shaft 41 is fixedly connected with a first hand wheel 43, and a plurality of first handles are uniformly arranged on the first hand wheel 43 in the circumferential direction. In order to control the lifting height of the secondary ladder frame 3, a first pin hole is formed in the side surface of the first vertical plate 21, a first pin 45 can be inserted into the first pin hole, the first pin 45 can extend between two adjacent first handles, and the first pin 45 can be matched with the first pin hole to clamp and prevent the first hand wheel 43 from rotating. The working principle of the lifting device 4 is as follows: when the first hand wheel 43 is rotated manually, the first gear 42 is meshed with the first rack 32, the rotation of the first hand wheel 43 can drive the second-stage ladder rack 3 to lift in the first chute 23, when the second-stage ladder rack 3 is lifted to a proper height, the first bolt 45 is manually inserted into the first bolt hole, the first bolt 45 is clamped and prevents the first hand wheel 43 from rotating, and therefore the lifting height of the second-stage ladder rack 3 can be adjusted and fixed. Meanwhile, the inclination angle of the primary ladder frame 2 can be adjusted by the telescopic cylinder 13, so that the multifunctional ladder frame can be suitable for various operation scenes with different heights.

The steering device 5 comprises two steering installation seats 51 fixedly arranged at the tops of the second vertical plates 31 respectively, the two steering installation seats 51 are identical in structure and mirror images of each other, an installation hole 52 which is in the same direction as the pedal is formed in the center of the side face of each steering installation seat 51, and a second rotating shaft 53 is rotatably installed in each installation hole 52. The two ends of the second rotating shaft 53 are respectively provided with a second gear 54 and a second hand wheel 55 which are arranged side by side, the second hand wheel 55 is circumferentially and uniformly provided with a second handle, the second gear 54 and the second hand wheel 55 are both fixed on the second rotating shaft 53 and rotate along with the second rotating shaft 53, and the second gear 54 is positioned close to the inner side of the steering installation seat 51. Furthermore, two ladder frame insertion holes 56 which cross the circumferential surface of the second rotating shaft 53 are symmetrically arranged on the second rotating shaft 53, and the bogie 6 can be inserted into and penetrate through the ladder frame insertion holes 56 and fastened and fixedly arranged on the second rotating shaft 53. When the second hand wheel 55 is manually rotated, the second rotating shaft 53 rotates in the mounting hole 52 of the steering mounting seat 51, and the second gear 54 and the bogie 6 rotate together with the second rotating shaft 53, so that the bogie 6 can adjust the deflection angle according to actual needs.

Further, in order to control the deflection angle of the bogie ladder 6, a second pin hole is formed in the side surface of the steering mounting seat 51, a second pin 57 can be inserted into the second pin hole, the second pin 57 can extend between two adjacent second handles, and the second pin 57 can be matched with the second pin hole to clamp and prevent the second handle wheel 55 from rotating.

Further, in order to ensure the safety of the aerial work and prevent the second hand wheel 55 from freely rotating due to the accidental falling of the second bolt 57, which may lead to a safety accident, a T-shaped brake slot 58 is further provided on the steering mounting seat 51, a T-shaped brake block 59 is manually inserted into the T-shaped brake slot 58, when the T-shaped brake block 59 is manually pushed to the lower end of the T-shaped brake slot 58, the T-shaped brake block 59 may be caught between two adjacent saw teeth of the second gear 54, and the T-shaped brake block 59 and the T-shaped brake slot 58 cooperate to catch and prevent the second hand wheel 55 from rotating.

The steering device 5 works according to the following principle: when the second hand wheel 55 is manually rotated, the second hand wheel 55, the second gear 54, the second rotating shaft 53 and the bogie 6 are fastened and connected into a whole, so that the bogie 6 can deflect by taking the second rotating shaft 53 as a rotating shaft. When the bogie 6 is manually adjusted to be deflected to a proper angle, the second pin 57 is manually inserted into the second pin hole, the T-shaped brake block 59 is manually inserted into the T-shaped brake slot 58, and the second pin 57 and the T-shaped brake block 59 are clamped together and prevent the second hand wheel 55 from rotating, so that the deflection angle of the bogie 6 can be adjusted and fixed.

The whole appearance of the bogie ladder 6 is arched, and the arched design enables the bogie ladder 6 to be close to the extrados surface of the airplane body, so that the bogie ladder is more beneficial to the outer surface close to the airplane. Meanwhile, in order to further enhance the safety of the aerial work, the bogie 6 is further provided with a handrail 61.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1) the multifunctional ladder frame has the advantages that the inclination angle of the primary ladder frame 2 is adjusted through the telescopic cylinder 13, the lifting height of the secondary ladder frame 3 is adjusted through the lifting device 4, the deflection angle of the steering ladder frame 6 is adjusted through the steering device 5, and multiple parts have adjusting functions, so that the multifunctional ladder frame can be quickly close to the airplane maintenance position as far as possible, is suitable for airplane maintenance work of different airplane types or different regions of the same airplane type, and is high in applicability;

2) the multifunctional ladder frame is simple and convenient to operate in adjusting the inclination angle, the lifting height and the deflection angle, and can improve the working efficiency and reduce the working difficulty;

3) the multifunctional ladder frame has the advantages of simple structure, low manufacturing cost, small size and small occupied space, and can be contracted to a small size after the inclination angle, the lifting height and the deflection angle are adjusted, thereby being convenient for storage.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The utility model provides a multi-functional ladder frame that aircraft maintenance was used, includes base, one-level ladder frame, second grade ladder frame and bogie ladder frame, one-level ladder frame is installed on the base, and is provided with elevating gear on the one-level ladder frame, and second grade ladder frame is installed in the first spout of one-level ladder frame, and the top of second grade ladder frame is provided with the device that turns to, bogie ladder frame installs on the device that turns to, its characterized in that:

the telescopic rod of the telescopic cylinder is connected with the primary ladder frame;

the primary ladder frame comprises two first vertical plates which are arranged in parallel, the lower ends of the first vertical plates are hinged to the tail of the base, first sliding grooves are formed in the inner sides of the two first vertical plates, and the first sliding grooves are formed along the long edge direction of the first vertical plates;

the two-stage ladder frame comprises two second vertical plates which are arranged in parallel, the second vertical plates are convex plates, the convex parts of the second vertical plates are installed in the first sliding grooves in a matching mode, racks are arranged on one sides of the two second vertical plates facing the lifting device, and the racks are arranged along the long edge direction of the second vertical plates;

the lifting device comprises a first rotating shaft transversely arranged on the front sides of the two first vertical plates, and two first gears are arranged on the first rotating shaft at intervals and are respectively meshed with the two racks on the second vertical plate; one end of the first rotating shaft is fixedly connected with a first hand wheel;

the steering device comprises two steering mounting seats which are fixedly arranged at the top of the second vertical plate respectively, the two steering mounting seats have the same structure and are mirror images of each other, a mounting hole which is in the same direction with the pedal is formed in the center of the side face of each steering mounting seat, a second rotating shaft is rotatably mounted in each mounting hole, second hand wheels are arranged at two ends of each second rotating shaft respectively, two ladder frame jacks which cross the periphery of the second rotating shaft are symmetrically arranged on each second rotating shaft, and the steering ladder frame can be inserted into the ladder frame jacks and fastened.

2. The multi-function ladder of claim 1, wherein: and the two ends of the second rotating shaft are respectively provided with a second gear, the second gear is arranged side by side with the second hand wheel, and the second gear is positioned at the inner side close to the steering mounting seat.

3. The multi-function ladder of claim 2, wherein: the second hand wheel, the second gear, the second rotating shaft and the bogie ladder frame are fixedly connected into a whole.

4. The multi-function ladder of claim 3, wherein: second handles are uniformly arranged on the second hand wheel in the circumferential direction; first handles are uniformly arranged on the first hand wheel in the circumferential direction.

5. The multi-function ladder of claim 4, wherein: and a second pin hole is formed in the side surface of the steering mounting seat, a second bolt can be inserted into the second pin hole, and the second bolt can extend out to a position between two adjacent second handles.

6. The multi-function ladder of claim 5, wherein: and a T-shaped brake groove is further formed in the steering mounting seat, a T-shaped brake block can be manually inserted into the T-shaped brake groove, and when the T-shaped brake block slides to the lower end of the T-shaped brake groove, the T-shaped brake block can be clamped between two adjacent sawteeth of the second gear.

7. The multi-function ladder of claim 6, wherein: the side surface of the first vertical plate is provided with a first pin hole, a first bolt can be inserted into the first pin hole, and the first bolt can extend out to a position between two adjacent first handles.

8. The multi-function ladder of claim 7, wherein: the whole appearance of the bogie ladder frame is arched, and the bogie ladder frame is also provided with handrails.

9. The multi-function ladder of claim 7, wherein: the base is of a frame structure, walking wheels are arranged at four corners of the base, and a traction rod is arranged at the head of the base.

10. The multi-function ladder of claim 7, wherein: a pedal rod is arranged on the rear side surface of the first vertical plate.

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