阅读说明：本技术 装配式航铝直梯、直梯组件及直梯装配方法 (Assembled aviation aluminum straight ladder, straight ladder assembly and straight ladder assembly method ) 是由 孙锐 王丹 艾英军 于立泽 孙磊 崔海猛 刘鑫 黄亮 金秋硕 于 2020-06-22 设计创作，主要内容包括：本发明涉及一种装配式航铝直梯,直梯包括直爬梯、支撑结构以及护笼；直爬梯通过承插连接机构连接多段梯梁组件而成,每一梯梁组件包括相对设置的一对梯梁、以及设于梯梁之间的踏棍；梯梁为铝合金材质的矩形管构造,承接连接机构为与矩形管腔体匹配的高强板体构造,用于插接并固定于相邻段梯梁的方管内；支撑结构设置多组支撑连接件将梯梁后侧固定于墙面；护笼包括与梯梁连接的多个护笼笼箍以及连接多个护笼笼箍的立杆,每个护笼笼箍由左笼箍和右笼箍通过紧固件连接成一体。该直梯具有自重轻、强度高、安装方便快捷、连接可靠的优点。(The invention relates to an assembled aviation aluminum straight ladder, which comprises a straight ladder, a supporting structure and a protective cage, wherein the vertical ladder is arranged on the vertical ladder; the vertical ladder is formed by connecting a plurality of sections of ladder beam components through socket connecting mechanisms, and each ladder beam component comprises a pair of oppositely arranged ladder beams and a rung arranged between the ladder beams; the ladder beams are of rectangular tube structures made of aluminum alloy materials, and the bearing and connecting mechanism is of a high-strength plate body structure matched with the rectangular tube cavity and used for being inserted and fixed in the square tubes of the adjacent sections of ladder beams; the supporting structure is provided with a plurality of groups of supporting connecting pieces for fixing the rear side of the ladder beam on the wall surface; the cage comprises a plurality of cage protecting hoops connected with the ladder beam and a plurality of vertical rods connected with the cage protecting hoops, and each cage protecting hoop is connected into a whole by a left cage hoop and a right cage hoop through fasteners. The vertical ladder has the advantages of light dead weight, high strength, convenience and rapidness in installation and reliability in connection.)

1. An assembled aluminum ladder is characterized by comprising a ladder stand (1), a supporting structure and a protective cage (2);

the vertical ladder (1) is formed by connecting a plurality of sections of ladder beam components through socket connecting mechanisms (3), and each ladder beam component comprises a pair of ladder beams (10) which are oppositely arranged and rungs (11) which are arranged between the ladder beams (10); the ladder beam (10) is of a rectangular pipe structure made of aluminum alloy materials, and the socket connecting mechanism (3) is of a high-strength plate structure matched with the rectangular pipe cavity and is used for being inserted and fixed in a square pipe of the ladder beam (10) of the adjacent section;

the supporting structure is provided with a plurality of groups of supporting connecting pieces (4) to fix the rear side of the ladder beam (10) on the wall surface;

the cage protection device is characterized in that the cage protection device (2) comprises a plurality of cage protection hoops (20) connected with the ladder beam (10) and vertical rods (21) connected with the cage protection hoops (20), and each cage protection hoop (20) is formed by connecting a left cage hoop (26) and a right cage hoop (27) into a whole through a fastener.

2. The assembled aviation aluminum straight ladder as claimed in claim 1, wherein the rectangular tube inside of the ladder beam (10) is provided with a rung mounting hole (12) formed in the shape of a rung (11) as a standard; the hollow rod body of rod of step rod (11) for triangle-shaped cross section, step rod (11) surface is equipped with anti-skidding line (13), step rod (11) both sides cross-sectional position is equipped with self tapping screw mounting hole (14), step rod mounting hole (12) pass through self tapping screw fastening connection with self tapping screw mounting hole (14).

3. The assembled aluminum ladder as claimed in claim 1, wherein each group of the supporting and connecting members (4) comprises two U-shaped groove aluminum plates (40) and two several-shaped groove aluminum strips (41) parallel to the rungs (11), the groove angle of one side of each U-shaped groove aluminum plate (40) is wrapped from the outer side of the ladder beam (10) to the front side of the ladder beam, and the groove angle of the other side of each U-shaped groove aluminum plate faces backwards and is connected with the end parts of the several-shaped groove aluminum strips (41) and fastened by fasteners; the front side and the lateral side of the ladder beam (10) are provided with a plurality of adjusting holes (15) for installing fasteners.

4. The assembled aluminum ladder of claim 3, wherein the supporting structure further comprises a reinforcing riser (42) of a sectional structure parallel to the ladder beam (10), one side of the reinforcing riser (42) is fixedly connected with the sectional aluminum strips (41) through fasteners, and the other side of the reinforcing riser is fixed to the wall surface through fasteners.

5. The assembled aluminum ladder of claim 1, further comprising an upper handrail mechanism, wherein the upper handrail mechanism comprises a pair of inverted-U-shaped beams (50) and a foot-rest (51) connecting the bottoms of the two inverted-U-shaped beams (50), the inverted-U-shaped beams (50) are of rectangular pipe structures made of aluminum alloy materials and are inserted into or integrally formed with the ladder beam (10), and two sides of the foot-rest (51) are connected to the top wall through angle steel pieces.

6. The fabricated aluminum ladder as claimed in claim 1, wherein the fasteners connecting the left cage hoop (26) and the right cage hoop (27) are 2-5 bolts; the number of the upright posts (21) is 4-6, and the upright posts are uniformly and vertically distributed along the outer side of the cage protecting hoop (20); the distance between the adjacent upright stanchions (21) is not more than 300mm, and the length of each upright stanchion (21) is 2.5-4 m; an extension rod (25) is arranged at the fixed end of the top of the cage protecting hoop (20).

7. The assembled aluminum ladder as claimed in claim 1, wherein the bottom of the ladder stand further comprises a climbing gate (6), the climbing gate (6) comprises a left part and a right part, the left part and the right part each comprise a Z-axis rotating rod (61) rotatably connected to the side wall of the ladder beam (10) through an angle steel (60), an x-axis connecting rod (62) arranged at the bottom of the Z-axis rotating rod (61), and a y-axis connecting rod (63) arranged at the top of the Z-axis rotating rod (61), and a horizontal blocking gate (64) is arranged on one side, facing the stepping stick (11), of the two y-axis connecting rods (63); the free end parts of the two X-axis connecting rods (62) are provided with opposite insertion holes (65), and the insertion holes (65) are locked through a lockset.

8. An assembled aviation aluminum straight ladder component, which is characterized by at least comprising an upper straight ladder and a lower straight ladder which are connected at different vertical positions, wherein the upper straight ladder and the lower straight ladder are both provided with the straight ladder as claimed in any one of claims 1 to 7, the upper straight ladder part at the connecting part is a lower interface ladder (100), and the lower straight ladder part at the connecting part is an upper interface ladder (101);

the front sides of the lower interface ladder (100) and the upper interface ladder (101) are respectively provided with a protection ladder (102) connected with ladder beams (10) at corresponding positions, each protection ladder (102) consists of a pair of protection ladder beams (103) which are oppositely arranged and a protection step stick (104) arranged between the protection ladder beams (103), and the lower parts of the ladder beams (10) of the lower interface ladder (100) and the protection ladder beams (103) at the corresponding front sides are provided with a protection ladder pedal (105); guard rails (106) which are bent towards the middle part in an outward arc shape are arranged between the ladder beam (10) on the outer side of the lower interface ladder (100) and the ladder protection beam (103) and between the ladder beam (10) on the outer side of the upper interface ladder (101) and the ladder protection beam (103).

9. The assembled aviation aluminum straight ladder assembly as claimed in claim 8, wherein the ladder beam (10) inside the lower interface ladder (100) and the ladder beam (10) inside the upper interface ladder (101) are provided with 3-6 sets of matched connecting steel, the ladder protection beam (103) outside the lower interface ladder (100) and the ladder protection beam (103) outside the upper interface ladder (101) are provided with 3-6 sets of matched connecting steel, and each set of connecting steel is fixedly connected through at least two fasteners.

10. An assembling method applied to the assembled aviation aluminum straight ladder of any one of the claims 1 to 7,

assembling each part of the upper handrail mechanism made of high-strength aluminum alloy by adopting a fastener;

assembling the ladder beams and the rungs of the sections of the vertical ladder made of the high-strength aluminum alloy material by adopting fasteners;

splicing a left cage hoop and a right cage hoop made of high-strength aluminum alloy materials into a cage protecting cage hoop, and parallelly and fixedly connecting a plurality of cage protecting cages through vertical rods according to preset intervals to assemble the cage;

the vertical ladders at different sections and the vertical ladders and the upper handrail mechanism are connected through socket joint connecting mechanisms, the ladder beam, the bearing connecting mechanism and one side of the U-shaped groove aluminum plate are fixedly connected together at the connecting part by adopting a fastener, and the other side of the U-shaped groove aluminum plate is fixedly connected with a plurality of groove aluminum strips; fixedly connecting one side of the ladder beam and the U-shaped groove aluminum plate by adopting a fastener on the non-connecting part, and fixedly connecting the other side of the ladder beam and the aluminum strips with the grooves;

temporarily positioning and temporarily fixing the straight ladder by adopting special traction or hoisting equipment, fixing a plurality of grooves of aluminum strips at the connecting part to one side of a reinforced vertical plate, wherein the distance from the end surface of the reinforced vertical plate to the plurality of grooves of aluminum strips is 100 mm; after correction, the fastening position of the aluminum strips in the grooves at the non-connecting part on the reinforced vertical plate is adjusted, and the distance from the end surface of the reinforced vertical plate to the aluminum strips in the grooves is 120 mm; fastening the adjusted fastening piece;

fixedly connecting the reinforced vertical plate to a preset position of the wall surface through a fastener;

fixing the free end of a cage hoop on the cage on the ladder beam by adopting a fastener; then fixedly connecting the climbing forbidding doors to the ladder beams at the lower part of the vertical ladder to finish the assembly of the aluminum vertical ladder;

wherein, the fastener is hexagon bolt, horseshoe bolt and self-tapping screw.

Technical Field

The invention belongs to the field of fixed straight ladders, and particularly relates to an assembled aluminum navigating straight ladder, a straight ladder assembly and a straight ladder assembly method.

Background

The fixed steel vertical ladder is a vertical steel ladder which is permanently installed on the outer wall of a building and forms an angle of 90 degrees with the horizontal plane, and the fixed steel vertical ladder is mainly used for roof or platform maintenance. The traditional steel ladder stand is formed by welding profile steel, steel plates, reinforcing steel bars and other materials, and the steel is usually Q235B. When the steel ladder is welded, embedded parts need to be reserved in the wall body, otherwise, the steel ladder with large self weight cannot be firmly connected. Particularly, for some projects of transforming and additionally arranging the straight ladder, the wall body is not embedded with embedded parts in advance, and the increase of the straight ladder is very difficult. The steel ladder formed by welding has the advantages of low construction speed, large level change of construction quality due to operators, low construction speed and more mechanical operation. The vertical ladder is located outdoors for a long time, the environmental change is large, the ladder is easy to rust, the sense organ is influenced, potential safety hazards exist, and the later maintenance cost is high.

Disclosure of Invention

Aiming at the technical problems, the assembled aviation aluminum straight ladder has the advantages of light dead weight, high strength, convenience and quickness in installation and reliability in connection.

In order to achieve the purpose, the technical scheme adopted by the invention is that the assembled aviation aluminum straight ladder comprises a straight ladder stand, a supporting structure and a protective cage;

the vertical ladder is formed by connecting a plurality of sections of ladder beam assemblies through socket connecting mechanisms, and each ladder beam assembly comprises a pair of oppositely arranged ladder beams and a rung arranged between the ladder beams; the ladder beam is of a rectangular pipe structure made of aluminum alloy materials, and the socket connecting mechanism is of a high-strength plate structure matched with the rectangular pipe cavity and is used for being inserted and fixed in a square pipe of an adjacent section of ladder beam;

the supporting structure is provided with a plurality of groups of supporting connecting pieces to fix the rear side of the ladder beam on the wall surface;

the cage comprises a plurality of cage protecting hoops connected with the ladder beam and a plurality of vertical rods connected with the cage protecting hoops, and each cage protecting hoop is formed by connecting a left cage hoop and a right cage hoop into a whole through a fastener.

Furthermore, a foot stick mounting hole which is formed by taking the shape of a foot stick as a standard is formed in the inner side of the rectangular pipe of the ladder beam; the walking stick is a hollow rod body with a triangular cross section, anti-skidding lines are arranged on the surface of the walking stick, self-tapping screw mounting holes are formed in the cross sections of the two sides of the walking stick, and the walking stick mounting holes and the self-tapping screw mounting holes are fastened and connected through self-tapping screws.

Furthermore, each group of the supporting connecting pieces comprises two U-shaped groove aluminum plates and two aluminum strips with several grooves parallel to the rungs, the groove angle on one side of each U-shaped groove aluminum plate is coated to the front side of the ladder beam from the outer side of the ladder beam, and the groove angle on the other side faces backwards and is connected with the end parts of the aluminum strips with several grooves and is fastened through a fastening piece; the ladder beam front side and the side all are equipped with a plurality of regulation holes that are used for installing the fastener.

In an improved technical scheme, the supporting structure further comprises a reinforced vertical plate of a plurality of types of structures parallel to the ladder beam, one side of the reinforced vertical plate is fixedly connected with the aluminum strips of the plurality of types of grooves through fasteners, and the other side of the reinforced vertical plate is fixed on the wall surface through fasteners.

In still another improved technical scheme, still include handrail mechanism, handrail mechanism includes a pair of type of falling U roof beam body and connects two go up the baseboard of type of falling U roof beam body bottom, the type of falling U roof beam body be with ladder roof beam looks socket joint or integrated into one piece's rectangular pipe structure of aluminum alloy material, the baseboard both sides pass through angle steel spare and connect in the wall crown.

Further, the fastener for connecting the left cage hoop and the right cage hoop is 2-5 bolts; the number of the upright posts is 4-6, and the upright posts are uniformly and vertically distributed along the outer side of the cage protecting hoop; the distance between every two adjacent upright posts is not more than 300mm, and the length of each upright post is 2.5-4 m; the fixed end at the top of the cage protecting hoop is provided with an extension rod.

In another improved technical scheme, the bottom of the vertical ladder further comprises a climbing forbidding door, the climbing forbidding door comprises a left part and a right part, the left part and the right part respectively comprise a Z-axis rotating rod which is rotatably connected to the side wall of the ladder beam through angle steel, an x-axis connecting rod arranged at the bottom of the Z-axis rotating rod and a y-axis connecting rod arranged at the top of the Z-axis rotating rod, and the two y-axis connecting rods are provided with a blocking door with a horizontal plane on one side facing the pedal rod; the free end parts of the two X-axis connecting rods are provided with opposite insertion holes, and the insertion holes are locked through a lockset.

The invention also discloses an assembled aluminum aviation straight ladder component which at least comprises an upper straight ladder and a lower straight ladder which are connected at different vertical positions, wherein the upper straight ladder and the lower straight ladder are both the straight ladders, the upper straight ladder part positioned at the connecting part is a lower interface ladder, and the lower straight ladder part positioned at the connecting part is an upper interface ladder;

the front sides of the lower interface ladder and the upper interface ladder are both provided with a protection ladder connected with ladder beams at corresponding positions, the protection ladder consists of a pair of protection ladder beams which are oppositely arranged and a protection step stick arranged between the protection ladder beams, and the lower parts of the ladder beams of the lower interface ladder and the protection ladder beams at the corresponding front sides are provided with ladder protection pedals; the ladder beam outside the lower interface ladder and the guard ladder beam, the ladder beam outside the upper interface ladder and the guard ladder beam are both provided with guardrails which are bent outwards in an arc shape towards the middle.

Further, the inboard terraced roof beam of interface ladder and the inboard terraced roof beam of last interface ladder all are equipped with 3 ~ 6 connection steel that match mutually, the terraced roof beam of protecting in the interface ladder outside and the terraced roof beam of protecting in the interface ladder outside all are equipped with 3 ~ 6 connection steel that match mutually, every group the connection steel passes through the fastener rigid coupling of at least two.

In a third aspect, the invention also provides an assembling method applied to the assembled aviation aluminum straight ladder,

assembling each part of the upper handrail mechanism made of high-strength aluminum alloy by adopting a fastener;

assembling the ladder beams and the rungs of the sections of the vertical ladder made of the high-strength aluminum alloy material by adopting fasteners;

splicing a left cage hoop and a right cage hoop made of high-strength aluminum alloy materials into a cage protecting cage hoop, and parallelly and fixedly connecting a plurality of cage protecting cages through vertical rods according to preset intervals to assemble the cage;

the vertical ladders at different sections and the vertical ladders and the upper handrail mechanism are connected through socket joint connecting mechanisms, the ladder beam, the socket joint connecting mechanisms and one side of the U-shaped groove aluminum plate are fixedly connected together at the connecting part by adopting fasteners, and the other side of the U-shaped groove aluminum plate is fixedly connected with a plurality of groove aluminum strips; fixedly connecting one side of the ladder beam and the U-shaped groove aluminum plate by adopting a fastener on the non-connecting part, and fixedly connecting the other side of the ladder beam and the aluminum strips with the grooves;

temporarily positioning and temporarily fixing the straight ladder by adopting special traction or hoisting equipment, fixing a plurality of grooves of aluminum strips at the connecting part to one side of a reinforced vertical plate, wherein the distance from the end surface of the reinforced vertical plate to the plurality of grooves of aluminum strips is 100 mm; after correction, the fastening position of the aluminum strips in the grooves at the non-connecting part on the reinforced vertical plate is adjusted, and the distance from the end surface of the reinforced vertical plate to the aluminum strips in the grooves is 120 mm; fastening the adjusted fastening piece;

fixedly connecting the reinforced vertical plate to a preset position of the wall surface through a fastener;

fixing the free end of a cage hoop on the cage on the ladder beam by adopting a fastener; then fixedly connecting the climbing forbidding doors to the ladder beams at the lower part of the vertical ladder to finish the assembly of the aluminum vertical ladder;

wherein, the fastener is hexagon bolt, horseshoe bolt and self-tapping screw.

Compared with the prior art, the technical scheme of the invention can obtain the following beneficial effects:

1. the fixed straight ladder adopts an assembled aluminum ladder, wherein ladder beams, rungs, protective cages, connecting pieces, supporting structures and the like are all high-strength aluminum alloy products, and the fixed straight ladder has the advantages of light dead weight, high strength, convenience and quickness in installation and reliability in connection. In addition, the aluminum alloy straight ladder has good appearance, does not rust, does not need later maintenance for rust removal, has good durability and can have the same service life as a building.

2. The vertical ladder can be assembled through different connecting pieces and supporting forms, and can be suitable for walls made of different materials and with different structural types; the aluminum alloy straight ladder is assembled and integrally hoisted on the ground, the whole assembling and hoisting work of the aluminum alloy straight ladder with the length of about 14 meters can be completed within 4 hours, and the construction is convenient and fast.

3. All the components are standard components, and the components are produced in standardized batches, so that the quality is reliable and stable; convenient transportation outside the field in the field, and the volume of the packed 14 m vertical ladder is about 0.4m³。

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.

FIG. 1 is a side view of one embodiment of a fabricated aluminum aircraft vertical ladder;

FIG. 2 is a front view of one embodiment of a fabricated aluminum aircraft vertical ladder;

figure 3 is a front view of one embodiment of a vertical ladder;

figure 4 is a side view of one embodiment of a vertical ladder;

FIG. 5 is a schematic cross-sectional view of the female connection mechanism in a received state;

FIG. 6 is a schematic view showing the receiving state of the socket coupling mechanism;

FIG. 7 is a schematic view of the construction of one embodiment of the rung;

FIG. 8 is a schematic view of several embodiments of a support link;

FIG. 9 is a schematic structural view of the upper armrest mechanism;

FIG. 10 is a front view of one embodiment of a cage;

FIG. 11 is a side view of an embodiment of a cage;

FIG. 12a is a schematic structural view of a cage hoop;

FIG. 12b is an enlarged view of portion A of FIG. 12 a;

FIG. 13 is a schematic diagram of a construction of one embodiment of a gate inhibition;

fig. 14 is a schematic structural diagram of one embodiment of the assembled aluminum aircraft vertical ladder assembly.

Detailed Description

In order to make the purpose, technical solution and beneficial effects of the present application more clear and more obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

An embodiment of the fabricated aircraft aluminum vertical ladder of the present invention will be described below with reference to the accompanying drawings. As shown in fig. 1-2, the assembled aviation aluminum straight ladder comprises a straight ladder 1, a supporting structure and a protective cage 2.

The vertical ladder 1 is formed by connecting a plurality of sections of ladder beam assemblies through socket connecting mechanisms 3, and as shown in fig. 3-4, each ladder beam assembly comprises a pair of ladder beams 10 which are oppositely arranged and rungs 11 which are arranged between the ladder beams 10. In practice, the rung 11 and the ladder beam 10 are fixedly connected by stainless steel tapping screws. The ladder beam 10 is made of rectangular pipes made of aluminum alloy, and the socket joint connecting mechanism 3 is made of a high-strength plate body matched with the cavity of the rectangular pipe and used for being inserted and fixed in the square pipe of the ladder beam 10 of the adjacent section, and the figure 5 shows that the ladder beam is a rectangular pipe made of aluminum alloy.

The supporting structure is provided with a plurality of groups of supporting connecting pieces 4 to fix the rear side of the ladder beam 10 on the wall surface.

The cage 2 comprises a plurality of cage protecting hoops 20 connected with the ladder beam 10 and vertical rods 21 connected with the cage protecting hoops 20, and each cage protecting hoop 20 is formed by connecting a left cage hoop 26 and a right cage hoop 27 into a whole through a fastener.

The vertical ladder beam is a standard part, and a plurality of sections of ladder beams are connected into a ladder beam with a certain length through the socket joint connecting mechanism; the protective cage is divided into a left cage hoop and a right cage hoop which are connected into a whole through bolts, and the protective cage is connected into a whole with the vertical ladder through the reserved mounting holes on the ladder beam.

The rungs of the vertical ladder can be selected to be in various shapes except circular, and the factors in construction, stress performance, material saving and the like are considered, so that the section of the rungs is preferably in a hollow triangle shape; as shown in fig. 6-7, in a specific example, the ladder beam 10 has a rung mounting hole 12 formed on the inner side of the rectangular tube and corresponding to the shape of the rung 11; the hollow rod body of rod 11 for triangle-shaped cross section, rod 11 surface is equipped with anti-skidding line 13, rod 11 both sides cross-section position is equipped with self-tapping screw mounting hole 14, and direct rod 11 that will step on during the installation inserts rod mounting hole 12 of ladder beam 10 to fix both with stainless steel self-tapping screw.

In the specific improvement of the supporting connecting piece, an operator can select different transverse and longitudinal connecting pieces according to actual scenes (selecting and using a structure suitable for an on-site outer wall), so that the vertical ladder can be installed on various structural types such as a steel structure, reinforced concrete, a masonry structure and the like and wall materials, and is matched with special waterproof glue to be installed with waterproof glue cushion screws and bolts, and the reliable connection and the waterproof effect of an outer a wall are ensured. In a specific example, several embodiments of support connectors are shown in fig. 8; 8a1-8a2, each group of the supporting and connecting members 4 comprises two U-shaped groove aluminum plates 40 and two multi-shaped groove aluminum strips 41 parallel to the rungs 11, the groove angle of one side of each U-shaped groove aluminum plate 40 is covered from the outer side of the ladder beam 10 to the front side of the ladder beam, and the groove angle of the other side of each U-shaped groove aluminum plate faces backwards and is connected with the end part of each multi-shaped groove aluminum strip 41 and is fastened by a fastener; the front side and the side of the ladder beam 10 are provided with a plurality of adjusting holes 15 for installing fasteners, so that the assembled ladder beam can be subjected to position adjustment.

Fig. 8b1-8b2 and 8c1-8c2 show a modified scheme of riser reinforcement for the supporting structure, the supporting structure further comprises reinforced risers 42 parallel to the ladder beam 10 and in a shape of several types, one sides of the reinforced risers 42 are fixedly connected with the aluminum strips 41 of the several types of grooves through fasteners, and the other sides of the reinforced risers 42 are fixed on the wall surface through fasteners.

On the basis of the scheme of the invention, the supporting structure can be further fixed by splicing two U-shaped groove aluminum plates into a whole, and as shown in the technical scheme of the enlarged transverse plate shown in fig. 8d1-8d2, the two U-shaped groove aluminum plates 40 are connected and fixed at the side edges through the angle steel component 44.

In one example shown in fig. 9, the vertical ladder further includes an upper handrail mechanism, the upper handrail mechanism includes a pair of inverted U-shaped beams 50 and a foot rest 51 connecting the bottoms of the two inverted U-shaped beams 50, the inverted U-shaped beams 50 are rectangular pipes made of aluminum alloy and are inserted into or integrally formed with the ladder beam 10, and two sides of the foot rest 51 are connected to the wall top through angle steel members.

Fig. 11-12 show an example of a cage-protecting cage hoop, wherein the cages are standard parts, vertical rods of the cage-protecting cage are connected and fixed into a whole through the cage-protecting cage hoop, bolt holes are reserved at the joints of the vertical rods and the cage hoop, and each joint is connected and fixed by a stainless steel bolt; for convenient transportation, the cage protecting hoop is averagely divided into two parts which are connected and fixed into a whole through bolts. Specifically, in order to avoid a hinged support at the joint of the cage hoops, the fasteners for connecting the left cage hoop 26 and the right cage hoop 27 are 2-5 bolts; the number of the upright posts 21 is 4-6, and the upright posts are uniformly and vertically distributed along the outer side of the cage protecting hoop 20; the distance between the adjacent upright rods 21 is not more than 300mm, and the length of each upright rod 21 is 2.5-4 m; an extension rod 25 is arranged at the fixed end of the top of the cage protecting cage hoop 20 and is used for being connected to the top of the handrail mechanism. In the example, after the cage hoops and the vertical rods are connected into a whole, the protective cage is connected with the ladder beam; bolt holes are reserved at the joints of the ladder beam and the protective cage, and in order to avoid the formation of a hinged support at the joints, each joint is provided with not less than 2 stainless steel bolts.

Fig. 13 shows a further example, the bottom of the vertical ladder further comprises a climbing gate 6, the climbing gate 6 comprises a left part and a right part, the left part and the right part each comprise a Z-axis rotating rod 61 rotatably connected to the side wall of the ladder beam 10 through an angle iron 60, an x-axis connecting rod 62 arranged at the bottom of the Z-axis rotating rod 61, and a y-axis connecting rod 63 arranged at the top of the Z-axis rotating rod 61, and two y-axis connecting rods 63 are provided with a horizontal blocking gate 64 towards one side of the foot bar 11; the free ends of the two x-axis connecting rods 62 are provided with opposite insertion holes 65, and the insertion holes 65 are locked through a lock.

In a second aspect, the present invention shows an assembled aviation aluminum straight ladder assembly, as shown in fig. 14, which at least includes an upper vertical ladder and a lower vertical ladder for receiving at different vertical positions, the vertical ladders are used for both the upper vertical ladder and the lower vertical ladder, the upper vertical ladder portion at the receiving portion is a lower interface ladder 100, and the lower vertical ladder portion at the receiving portion is an upper interface ladder 101.

The front sides of the lower interface ladder 100 and the upper interface ladder 101 are both provided with a protection ladder 102 connected with ladder beams 10 at corresponding positions, the protection ladder 102 is composed of a pair of protection ladder beams 103 arranged oppositely and a protection step stick 104 arranged between the protection ladder beams 103, and the lower parts of the ladder beams 10 of the lower interface ladder 100 and the protection ladder beams 103 corresponding to the front sides are provided with ladder protection steps 105; guard rails 106 which are curved outwards in an arc shape towards the middle are arranged between the ladder beam 10 and the ladder protection beam 103 on the outer side of the lower interface ladder 100 and between the ladder beam 10 and the ladder protection beam 103 on the outer side of the upper interface ladder 101.

Based on the invention principle, a user can carry out multi-type transverse connection and switching according to the specific building structure, the connection design is reasonable, and the safety is high.

In a preferred example, the ladder beam 10 inside the lower interface ladder 100 and the ladder beam 10 inside the upper interface ladder 101 are both provided with 3-6 groups of matched connecting steel so as to reinforce the connection of the two, the ladder protection beam 103 outside the lower interface ladder 100 and the ladder protection beam 103 outside the upper interface ladder 101 are both provided with 3-6 groups of matched connecting steel, and each group of the connecting steel is fixedly connected through at least two fasteners.

In a modified example of the third aspect, an assembling method of the assembled aviation aluminum straight ladder is provided, and the assembling method comprises the following steps:

s101, assembling each part of an upper handrail mechanism made of high-strength aluminum alloy by adopting a fastener;

s102, assembling ladder beams and rungs of the sections of the high-strength aluminum alloy vertical ladder by using fasteners;

s103, splicing a left cage hoop and a right cage hoop made of high-strength aluminum alloy materials into a cage protecting cage hoop, and parallelly and fixedly connecting a plurality of cage protecting hoops through vertical rods according to preset intervals to assemble a cage;

s104, connecting the vertical ladders at different sections, and connecting the vertical ladders and the upper handrail mechanism through socket connecting mechanisms, fixedly connecting the ladder beam, the socket connecting mechanisms and one side of a U-shaped groove aluminum plate at the connecting part by adopting fasteners, and fixedly connecting the other side of the U-shaped groove aluminum plate with a plurality of groove aluminum strips; fixedly connecting one side of the ladder beam and the U-shaped groove aluminum plate by adopting a fastener on the non-connecting part, and fixedly connecting the other side of the ladder beam and the aluminum strips with the grooves;

s105, temporarily positioning and temporarily fixing the straight ladder by adopting special traction or hoisting equipment, fixing a plurality of grooves of aluminum strips at the connecting part to one side of a reinforced vertical plate, wherein the distance from the end surface of the reinforced vertical plate to the plurality of grooves of aluminum strips is 100 mm; after correction, the fastening position of the aluminum strips in the grooves at the non-connecting part on the reinforced vertical plate is adjusted, and the distance from the end surface of the reinforced vertical plate to the aluminum strips in the grooves is 120 mm; fastening the adjusted fastening piece;

s106, fixedly connecting the reinforced vertical plate to a preset position of the wall surface through a fastener;

s107, fixing the free end of a cage hoop on the cage to the ladder beam by adopting a fastener; then fixedly connecting the climbing forbidding doors to the ladder beams at the lower part of the vertical ladder to finish the assembly of the aluminum vertical ladder;

the fastener is one or more of a hexagon bolt, a horseshoe bolt and a self-tapping screw; in the actual operation process, an operator adopts the aluminum alloy or stainless steel connecting piece, the screw and the bolt to assemble the aluminum alloy ladder beam, the foot stick, the protective cage and the climbing forbidding door into a whole according to the method,

the above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.