Safety arch ladder for assembly operation of large-diameter rocket

Abstract

The utility model provides a safety arch ladder for assembly operation of a large-diameter rocket, and relates to the technical field of rocket assembly. The safety arch ladder is characterized in that an arch ladder is arranged above a vertical ladder, and the arch ladder comprises an arch beam, a hanging ladder column, an anti-falling hanging rod and a first foot bar; the suspension ladder column is suspended below the arch beam through a plurality of suspension beams and extends from the two ends of the arch beam to the top; the arched door beams are arranged in pairs, and the top ends of the opposite arched door beams are connected through the anti-falling hanging rods, so that the structural stability of the arched door ladder is improved, and a high-position safety hanging point is provided for the safety rope; the opposite hanging ladder columns are connected through a plurality of first foot bars, and a worker climbs to the first foot bars through the vertical ladder to safely and conveniently assemble the top of the rocket.

Description

Technical Field

[0001] This utility model relates to the field of rocket assembly technology, specifically to a safety arch ladder for large-diameter rocket assembly operations. Background Technology

[0002] Currently, in the assembly of large-diameter rockets, the rockets are placed horizontally on the loading vehicle, and the work platform ladders used are located on both sides of the rocket. This only supports assembly operations on the sides and cannot accommodate assembly operations on the top of the rocket. When operations on the top of the rocket are required, workers often have to climb onto the top using the loading vehicle, increasing their carrying burden and frequently resulting in accidents involving stepping on rocket components. Furthermore, there are no fall arrest points on top of the rocket; the existing safety rope attachment points are lower than the operating points, creating a situation where the rope is used at a lower position than the working area, posing a safety hazard of workers slipping and falling. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a safety arch ladder for assembling large-diameter rockets, solving the problem that workbench ladders cannot simultaneously ensure safe assembly operations on the top of large-diameter rockets.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A safety arch ladder for large-diameter rocket assembly operations, the safety arch ladder comprising: an arch ladder, a vertical ladder, and a base beam;

[0006] Both ends of the archway staircase are connected to the base beam via vertical ladders;

[0007] The archway staircase includes: an archway beam, suspended stair columns, anti-fall rails, and a first step;

[0008] The suspended ladder columns are suspended below the arch beam by several cantilever beams, and the suspended ladder columns extend from both ends of the arch beam toward the top.

[0009] The arch beams are arranged in pairs, and the tops of the opposite arch beams are connected by anti-fall hanging rods; the opposite suspended stair columns are connected by several first step rods.

[0010] The base beam is equipped with multiple casters at its bottom and multiple lifting columns, which are used to lift the base beam so that the casters are off the ground.

[0011] Preferably, the base beam is provided with a radially sliding support pin, which is used to extend under the rocket loading vehicle chassis. The lifting column lifts the base beam to achieve contact between the support pin and the rocket loading vehicle chassis.

[0012] Preferably, the vertical ladder includes: a column and a second step;

[0013] The columns are arranged in pairs, and the opposing columns are connected by several second foot rods.

[0014] Preferably, the top of the column is connected to the end flange of the arch beam, and the bottom of the column is connected to the top flange of the base beam.

[0015] Preferably, a diagonal bracing beam is provided between the column and the base beam, with the top end of the diagonal bracing beam connected to the side flange of the column and the bottom end of the diagonal bracing beam connected to the top flange of the base beam.

[0016] Preferably, the arch beam and the anti-fall hanging rod, the arch beam and the first step rod, and the column and the second step rod are all connected by threads.

[0017] Preferably, the threaded extension directions at both ends of the fall arresting rod, the first step rod, and the second step rod are mirrored.

[0018] Preferably, the lifting column includes: a stud, a base, and a handwheel;

[0019] The stud is threadedly connected to the vertically extending screw hole of the base beam;

[0020] The bottom end of the stud is connected to the base, and the top end is connected to the handwheel.

[0021] This invention provides a safety arch ladder for assembling large-diameter rockets. Compared with existing technologies, it has the following advantages:

[0022] In this invention, a safety arch ladder is installed above a vertical ladder. The arch ladder includes an arch beam, suspended ladder columns, fall arresting rods, and first steps. The suspended ladder columns are suspended below the arch beam by several suspension beams, and extend from both ends of the arch beam to the top. The arch beams are arranged in pairs, and the tops of the opposite arch beams are connected by fall arresting rods, which improves the structural stability of the arch ladder and provides a high-level safety anchor point for the safety rope. The opposite suspended ladder columns are connected by several first steps, allowing workers to safely and conveniently perform assembly operations on the top of the rocket by climbing the vertical ladder to the first steps. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the safety archway ladder in an embodiment of this utility model.

[0025] Figure 2This is a schematic diagram of the lower half of the safety archway ladder in an embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the arch beam in an embodiment of this utility model.

[0027] Figure 4 This is a schematic diagram of the lifting column in an embodiment of the present utility model.

[0028] The reference numerals in the diagram are as follows: archway ladder 10, archway beam 11, suspended ladder column 12, anti-fall hanging rod 13, first step 14, suspension beam 15, vertical ladder 20, column 21, second step 22, diagonal brace beam 23, base beam 30, caster wheel 31, lifting column 32, stud 321, base 322, handwheel 323, support pin 33. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] This application provides a safety arch ladder for assembling large-diameter rockets, solving the problem that workbench ladders cannot simultaneously ensure safe assembly operations on the top of large-diameter rockets.

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] Example:

[0033] like Figures 1-3 As shown, this utility model provides a safety arch ladder for large-diameter rocket assembly operations. The safety arch ladder includes: an arch ladder 10, a vertical ladder 20, and a base beam 30.

[0034] Both ends of the archway ladder 10 are connected to the base beam 30 via vertical ladders 20;

[0035] The archway staircase 10 includes: an archway beam 11, a suspended stair column 12, a fall arresting rod 13, and a first step 14;

[0036] The suspended ladder column 12 is suspended below the arch beam 11 by several suspension beams 15, and the suspended ladder column 12 extends from both ends of the arch beam 11 toward the top.

[0037] The arch beams 11 are arranged in pairs, and the tops of the opposite arch beams 11 are connected by anti-fall hanging rods 13, which improves the structural stability of the arch ladder 10 and provides a high-level safety hanging point for the safety rope; the opposite suspension ladder columns 12 are connected by several first steps 14, and the staff can safely and conveniently perform assembly operations on the top of the rocket by climbing up the vertical ladder 20 to the first steps 14.

[0038] The base beam 30 is equipped with multiple casters 31 at its bottom to facilitate the movement of the safety arch ladder; the base beam 30 is provided with multiple lifting columns 32, which are used to lift the base beam 30 so that the casters 31 are off the ground, thereby positioning the safety arch ladder.

[0039] like Figure 1 , Figure 2 As shown, the base beam 30 is provided with a radially sliding support pin 33. After the safety arch ladder moves to the designated position, the support pin 33 extends into the bottom of the rocket loading vehicle chassis. The lifting column 32 lifts the base beam 30 so that the support pin 33 contacts the rocket loading vehicle chassis, effectively improving the stability of the safety arch ladder.

[0040] like Figure 1 , Figure 2 As shown, the vertical ladder 20 includes: a column 21 and a second step 22;

[0041] The columns 21 are arranged in pairs, and the opposing columns 21 are connected by several second steps 22, which workers use to climb up and down.

[0042] like Figure 1 As shown, the top end of the column 21 is connected to the end flange of the arch beam 11, and the bottom end of the column 21 is connected to the top flange of the base beam 30.

[0043] like Figure 1 , Figure 2 As shown, a diagonal bracing beam 23 is provided between the column 21 and the base beam 30. The top end of the diagonal bracing beam 23 is connected to the side flange of the column 21, and the bottom end of the diagonal bracing beam 23 is connected to the top flange of the base beam 30, thereby enhancing the connection stability between the column 21 and the base beam 30.

[0044] like Figures 1-3 As shown, the arch beam 11 and the anti-fall hanging rod 13, the arch beam 11 and the first step rod 14, and the column 21 and the second step rod 22 are all connected by threads.

[0045] The threads at both ends of the fall arresting rod 13, the first step rod 14, and the second step rod 22 are mirrored, so that when the fall arresting rod 13, the first step rod 14, and the second step rod 22 rotate in one direction, both ends are tightened or loosened simultaneously, which facilitates loading and unloading.

[0046] like Figure 1 , Figure 2 , Figure 4 As shown, the lifting column 32 includes: a stud 321, a base 322, and a handwheel 323;

[0047] The stud 321 is threadedly connected to the vertically extending screw hole of the base beam 30;

[0048] The bottom end of the stud 321 is connected to the base 322, and the top end is connected to the handwheel 323. The base 322 is used to contact the ground to support the safety arch ladder, and the handwheel 323 provides a point of force for driving the lifting column 32 to rotate.

[0049] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0050] 1. In this embodiment of the utility model, a safety arch ladder 10 is provided above the vertical ladder 20. The arch ladder 10 includes: an arch beam 11, a suspension ladder column 12, a fall arresting rod 13, and a first step 14. The suspension ladder column 12 is suspended below the arch beam 11 by several suspension beams 15, and the suspension ladder column 12 extends from both ends of the arch beam 11 to the top. The arch beams 11 are arranged in pairs, and the tops of the opposite arch beams 11 are connected by the fall arresting rod 13, which improves the structural stability of the arch ladder 10 and provides a high-level safety anchor point for the safety rope. The opposite suspension ladder columns 12 are connected by several first steps 14, and workers can safely and conveniently perform assembly operations on the top of the rocket by climbing up the vertical ladder 20 to the first step 14.

[0051] 2. In this embodiment of the utility model, the base beam 30 is provided with a radially sliding support pin 33. After the safety arch ladder moves to the designated position, the support pin 33 extends into the bottom of the rocket loading vehicle chassis. The lifting column 32 lifts the base beam 30 so that the support pin 33 contacts the rocket loading vehicle chassis, effectively improving the stability of the safety arch ladder.

[0052] 3. In this embodiment of the utility model, the safety arch ladder is assembled with components by means of flange connection and threaded connection, which is convenient for loading and unloading, and easy for storage and transportation.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A safety archway ladder for assembling large-diameter rockets, characterized in that, The safety archway ladder includes: an archway ladder (10), a vertical ladder (20), and a base beam (30); Both ends of the archway staircase (10) are connected to the base beam (30) via vertical ladders (20); The archway staircase (10) includes: an archway beam (11), a suspension stair column (12), a fall arresting rod (13), and a first step (14); The suspended ladder column (12) is suspended below the arch beam (11) by several suspension beams (15), and the suspended ladder column (12) extends from both ends of the arch beam (11) to the top; The arch beams (11) are arranged in pairs, and the tops of the opposite arch beams (11) are connected by anti-fall hanging rods (13); the opposite suspended ladder columns (12) are connected by a number of first step rods (14); The base beam (30) is equipped with multiple casters (31) at its bottom and multiple lifting columns (32) on its base beam (30). The lifting columns (32) are used to lift the base beam (30) so that the casters (31) are off the ground.

2. The safety archway ladder for large-diameter rocket assembly operations as described in claim 1, characterized in that, The base beam (30) is provided with a radially sliding support pin (33). The support pin (33) is used to extend into the bottom of the rocket loading vehicle chassis. The lifting column (32) lifts the base beam (30) to achieve contact between the support pin (33) and the rocket loading vehicle chassis.

3. The safety archway ladder for assembling large-diameter rockets as described in claim 1, characterized in that, The vertical ladder (20) includes: a column (21) and a second step (22); The columns (21) are arranged in pairs, and the opposing columns (21) are connected by a number of second foot rods (22).

4. The safety archway ladder for assembling large-diameter rockets as described in claim 3, characterized in that, The top of the column (21) is connected to the end flange of the arch beam (11), and the bottom of the column (21) is connected to the top flange of the base beam (30).

5. The safety archway ladder for assembling large-diameter rockets as described in claim 3, characterized in that, A diagonal bracing beam (23) is provided between the column (21) and the base beam (30). The top end of the diagonal bracing beam (23) is connected to the side flange of the column (21), and the bottom end of the diagonal bracing beam (23) is connected to the top flange of the base beam (30).

6. The safety archway ladder for large-diameter rocket assembly operations as described in claim 3, characterized in that, The arch beam (11) and the anti-fall hanging rod (13), the arch beam (11) and the first step rod (14), and the column (21) and the second step rod (22) are all connected by threads.

7. The safety archway ladder for large-diameter rocket assembly operations as described in claim 6, characterized in that, The threaded extension directions at both ends of the fall arrestor (13), the first step (14), and the second step (22) are mirrored.

8. The safety archway ladder for large-diameter rocket assembly operations as described in claim 1, characterized in that, The lifting column (32) includes: a stud (321), a base (322), and a handwheel (323); The stud (321) is threadedly connected to the vertically extending screw hole of the base beam (30); The bottom end of the stud (321) is connected to the base (322), and the top end is connected to the handwheel (323).

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