Stepping assembly and crawling ladder

Abstract

The utility model discloses a step assembly and a crawling ladder. The step assembly comprises a mounting structure, a fixing structure and a cantilever platform, the mounting structure comprises a mounting frame and a mounting part, and the mounting part is arranged on the mounting frame; the fixing structure is arranged on the mounting frame and is used for detachably mounting the mounting frame on a fixed step of the crawling ladder; the cantilever platform comprises a movable step and a matching part, the movable step is mounted on the mounting frame and can move relative to the mounting frame, and the matching part is arranged on the movable step, is matched with the mounting part and limits the movement of the movable step when the movable step moves to a preset position relative to the mounting frame. According to the scheme, the mounting height of the mounting frame on the crawling ladder can be selected according to the water level, the moving step is higher than the water level for people to pass, the moving step is effectively prevented from being submerged by water, potential safety hazards are eliminated, and safety performance is improved; and the relative positions of the movable steps and the mounting frame can be flexibly adjusted according to actual requirements, so that the ladder stand is suitable for ladder stands with different fixed step distances, and the universality is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the ladder of ship, specifically relates to a step subassembly and ladder of climbing. BACKGROUND

[0002] With the rapid development of China's economy and shipping facilities, in the field of water transportation construction, the construction of frame type port and anchorage is increasing. During the construction of pile foundation and superstructure, the pile foundation drilling platform and the superstructure are above the water surface with a certain height. In order to meet the safety requirements of the construction personnel on and off the operation platform, a safe and reliable, simple and convenient temporary ladder is extremely important after the construction ship is berthed and forms a safe channel with the operation platform.

[0003] Publication No. CN103373445A discloses a boarding ladder, the upper part of the ladder body is placed on the ship body platform frame, the bottom platform is placed on the operation platform, handrails are installed on both sides of the ladder body, the upper part and the lower part of the ladder body are provided with fixed blocks, the bottom of the lower fixed block is provided with a roller, the stability and reliability of the boarding ladder are improved, the bottom of the lower fixed block is provided with a roller, which can adapt to the change of the straight line distance between the ship body and the operation platform at any time, and the safety of boarding is improved.

[0004] However, in the inland reservoir area and the coastal tidal area, due to the large water level amplitude and the frequent change, the vertical distance between the operation platform and the water surface is dynamic during the construction process, the position of the ladder bottom platform is submerged underwater due to the water level fluctuation, the use function of the inclined ladder is limited, and the personnel on and off the inclined ladder increases the safety hazard. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical defects, and provides a step subassembly, which solves the technical problems that the vertical distance between the operation platform and the water surface is dynamic, the position of the ladder bottom platform is submerged underwater due to the water level fluctuation, the use function of the inclined ladder is limited, and the personnel on and off the inclined ladder increases the safety hazard.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] In the first aspect, the utility model provides a step subassembly, which comprises:

[0008] The installation structure comprises a mounting frame and a mounting part, and the mounting part is arranged on the mounting frame.

[0009] The fixing structure is arranged on the mounting frame and is used for detachably mounting the mounting frame on the fixed step of the ladder.

[0010] The cantilever platform comprises a movable step and a matching part, the movable step is installed on the mounting frame and can move relative to the mounting frame, the matching part is arranged on the movable step and matches with the mounting part, and the movement of the movable step is limited when the movable step moves to a preset position relative to the mounting frame.

[0011] In some embodiments, the movable step is provided with a fixed hole in a horizontal direction, and the mounting frame is provided with a plurality of groups of connecting holes corresponding to the fixed hole, and the plurality of groups of connecting holes are arranged at intervals along the moving direction of the movable step.

[0012] The step assembly further comprises a connecting bolt and a connecting nut, the connecting bolt is arranged through any connecting hole and the fixed hole, and the connecting nut is screwed on one end of the connecting bolt extending out of the fixed hole.

[0013] The matching part is composed of the fixed hole, and the mounting part is composed of the connecting hole.

[0014] In some embodiments, a plurality of fixed holes are arranged at intervals along the radial direction, and the plurality of fixed holes are located in the same plane, each group of connecting holes is provided with a plurality of connecting holes, and the plurality of connecting holes in the same group correspond to the plurality of fixed holes one by one.

[0015] The connecting bolt and the connecting nut are respectively provided with a plurality of groups, and the plurality of groups of connecting bolts and the plurality of groups of connecting nuts correspond to the plurality of groups of connecting holes in the same group, and each connecting bolt is arranged through the corresponding connecting hole and the fixed hole.

[0016] In some embodiments, the mounting frame comprises two mounting angle steels, the two mounting angle steels are arranged at intervals and are arranged with openings close to each other, and part of the two mounting angle steels are located above the movable step to jointly enclose the mounting channel with the movable step, and the mounting channel is used for arranging the fixed step.

[0017] Each mounting angle steel is provided with the fixed hole, and at least part of the connecting bolt and the connecting nut form the fixed structure.

[0018] In some embodiments, the movable step comprises a tread plate and a plurality of step angle steels, the plurality of step angle steels are sequentially connected in head-to-tail mode to form a step frame, and the tread plate is arranged on one side of the step frame.

[0019] The step frame is installed on the mounting frame and can move up and down relative to the mounting frame, and the matching part is arranged on the step frame.

[0020] In some embodiments, the tread plate is a grating plate.

[0021] In some embodiments, the mobile step further comprises a connecting angle steel, which is arranged horizontally in the step frame and separates the step frame into two cavities.

[0022] The step cover is arranged in one of the two cavities, and the mounting frame is arranged in the other cavity.

[0023] In some embodiments, the opening of the step angle steel faces inward.

[0024] In some embodiments, a plurality of the step angle steels are sequentially welded and connected, and the step plate is welded to the step frame.

[0025] In a second aspect, the utility model also provides a ladder, which comprises the step assembly according to any one of the above.

[0026] Compared with the prior art, the mounting frame is detachably mounted on the fixed step of the ladder through the fixing structure, so that the mounting height of the mounting frame on the ladder can be selected according to the water level, that is, the mounting frame can be flexibly mounted on the fixed step higher than the water level, thereby ensuring that the mobile step is higher than the water level to provide personnel with passage, effectively avoiding the mobile step from being flooded, eliminating safety hazards and improving safety performance; and the relative position of the mobile step and the mounting frame can be flexibly adjusted according to actual needs, so that the ladder can be applied to different fixed step spacings, and the ladder has good versatility. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the step assembly provided by the utility model embodiment when the step assembly is mounted on the fixed step of the ladder;

[0028] Figure 2 is Figure 1 a side view of the step assembly in the embodiment;

[0029] Figure 3 is Figure 1 a partial sectional view of the step assembly in the embodiment;

[0030] Figure 4 is Figure 1 a top view of the mobile step in the embodiment.

[0031] BRIEF DESCRIPTION OF DRAWINGS:

[0032] 1, mounting frame; 1a, connecting hole; 11, mounting angle steel; 2, mounting part; 3, fixing structure; 4, mobile step; 4a, fixing hole; 41, step angle steel; 42, step plate; 43, connecting angle steel; 5, matching part; 6, connecting bolt; 7, connecting nut; 8, fixed step. DETAILED DESCRIPTION

[0033] In order to make the utility model purposes, technical schemes and advantages more clearly, the following will be further described in detail with the drawings and examples.

[0034] In order to solve the technical problem that the vertical distance between the working platform and the water surface is dynamic, the ladder platform position is submerged underwater due to water level fluctuation, the use function of the inclined ladder is limited, and personnel going up and down the inclined ladder increases safety hazards, the utility model provides a step assembly, which can effectively avoid the mobile step from being submerged by water, eliminate safety hazards, and improve safety performance, and can flexibly adjust the relative position of the mobile step and the mounting frame according to actual needs, so as to be suitable for ladders with different fixed step distances, and has good versatility.

[0035] It should be noted that the step assembly of the utility model is used for but not limited to ladders and the like, in order to facilitate the description, in the utility model, only the step assembly applied to the ladder is taken as an example for description, and the principle of the step assembly applied to other types of equipment is substantially the same as that applied to the ladder, which will not be described here.

[0036] Please refer to Figures 1 to 3 , Figures 1 to 3 It is an embodiment of the utility model structure schematic diagram of step assembly, and the step assembly includes a mounting structure, a fixed structure 3 and a cantilever platform, the mounting structure includes a mounting frame 1 and a mounting part 2, the mounting part 2 is arranged on the mounting frame 1, the fixed structure 3 is arranged on the mounting frame 1 and is used for detachably mounting the mounting frame 1 on the fixed step 8 of the ladder, and the cantilever platform includes a mobile step 4 and a matching part 5, the mobile step 4 is mounted on the mounting frame 1 and can move relative to the mounting frame 1, the matching part 5 is arranged on the mobile step 4 and is matched with the mounting part 2, and when the mobile step 4 moves to a preset position relative to the mounting frame 1, the movement of the mobile step 4 is limited, specifically, in the scheme, the step assembly is mounted on the fixed step 8 of the ladder, and the mobile step 4 can move along the up-down direction relative to the mounting frame 1.

[0037] The step assembly provided by the utility model is detachably mounted on the fixed step 8 of the ladder through the fixed structure 3, so that the mounting height of the mounting frame 1 on the ladder can be selected according to the water level, that is, the mounting frame 1 can be flexibly mounted on the fixed step 8 higher than the water level, so that the mobile step 4 is higher than the water level, for personnel to pass through, effectively avoiding the mobile step 4 from being submerged by water, eliminating safety hazards, improving safety performance, and flexibly adjusting the relative position of the mobile step 4 and the mounting frame 1 according to actual needs, so as to be suitable for ladders with different fixed step 8 distances, and has good versatility.

[0038] It should be noted that the installation part 2 and the matching part 5 are not limited in the form of setting, as long as the moving step 4 can move up and down relative to the mounting frame 1. In an embodiment, the installation part 2 can be set as a hydraulic cylinder, which is installed on the mounting frame 1, and the piston rod thereof is arranged in the vertical direction and connected with the moving step 4, and the connection between the piston rod and the moving step 4 is the matching part 5. In another embodiment, the installation part 2 is set as a linear motor on the mounting frame 1, which drives the moving step 4 to move up and down and is locked.

[0039] In another embodiment, the moving step 4 is provided with a fixed hole 4a in the horizontal direction, and the mounting frame 1 is provided with a plurality of sets of connecting holes 1a corresponding to the fixed hole 4a, and the plurality of sets of connecting holes 1a are arranged in the moving direction of the moving step 4; the step assembly further comprises a connecting bolt 6 and a connecting nut 7, the connecting bolt 6 is arranged in any connecting hole 1a and passes through the fixed hole 4a, and the connecting nut 7 is screwed on one end of the connecting bolt 6 extending out of the fixed hole 4a; the matching part 5 is formed by the fixed hole 4a, and the installation part 2 is formed by the connecting hole 1a.

[0040] In this embodiment, the matching part 5 and the installation part 2 are respectively set as holes arranged in the horizontal direction, and the connecting holes 1a of the installation part 2 are arranged in multiple sets in the vertical direction, so that the connecting holes 1a opposite to the fixed holes 4a of the matching part 5 can be flexibly adjusted, that is, the height of the moving step 4 on the mounting frame 1 can be flexibly adjusted, and fixed by the connecting bolt 6 and the connecting nut 7, which is simple and reliable in structure.

[0041] In one embodiment, a plurality of fixed holes 4a are arranged in the radial direction, the plurality of fixed holes 4a are located in the same plane, each set of connecting holes 1a is provided with a plurality of connecting holes 1a, and the plurality of connecting holes 1a in the same set correspond to the plurality of fixed holes 4a one by one; a plurality of sets of connecting bolts 6 and connecting nuts 7 are provided, and the plurality of sets of connecting bolts 6 and connecting nuts 7 correspond to the plurality of connecting holes 1a in the same set, respectively, and each connecting bolt 6 is arranged in the corresponding connecting hole 1a and the fixed hole 4a.

[0042] In this embodiment, a plurality of fixed holes 4a are arranged, and a plurality of connecting holes 1a in each set are arranged corresponding to the fixed holes 4a, so that the connecting bolts 6 and the connecting nuts 7 can be arranged in the plurality of fixed holes 4a and the connecting holes 1a in the same horizontal plane, thereby improving the installation stability of the moving step 4 on the mounting frame 1.

[0043] It should be noted that the setting form of the fixing structure 3 is not limited, as long as the mounting rack 1 can be detachably connected with the fixed steps 8 of the ladder. In an embodiment, the fixing structure is in the form of a binding rope, and the mounting rack 1 is fixed on the fixed steps 8 of the ladder by the binding rope. In another embodiment, the fixing structure 3 is in the form of a clamping protrusion and a clamping groove, and the clamping protrusion is arranged on the mounting rack 1 and clamped in the clamping groove arranged on each fixed step 8 of the ladder, so as to realize the detachable connection between the mounting rack 1 and the fixed steps 8.

[0044] In another embodiment, the mounting rack 1 includes two mounting angle steels 11, which are arranged at intervals and open to each other, and part of which is arranged above the movable step 4 to form an installation channel together with the movable step 4, and the installation channel is used for the fixed steps 8 to pass through; each mounting angle steel 11 is provided with a fixing hole 4a, and at least part of the connecting bolt 6 and the connecting nut 7 form the fixing structure 3.

[0045] In this embodiment, the fixing structure 3 is composed of the connecting bolt 6 and the connecting nut 7, so that the fixing structure 3, the mounting part 2 and the matching part 5 can share the bolt and the nut, that is, the position of the movable step 4 on the mounting rack 1 can be adjusted at the same time by the cooperation of the connecting bolt 6 and the connecting nut 7, and the mounting rack 1 is detachably mounted on the fixed steps 8, improving the convenience.

[0046] In addition, in this scheme, the mounting rack 1 is in the form of two mounting angle steels 11, which can be applied to fixed steps 8 of various thicknesses when matched with the movable step 4, further improving the convenience. It should be noted that in an embodiment, in order to avoid interference between the movable step 4 and external objects, the height of the installation channel is set to be greater than the thickness of the fixed step 8, and the mounting rack 1 can be limited from shaking relative to the fixed step 8 by inserting a gasket, improving the stability.

[0047] In one embodiment, please refer to Figure 4 The movable step 4 includes a step plate 42 and a plurality of step angle steels 41, and the plurality of step angle steels 41 are connected in sequence to form a step frame, and the step plate 42 is arranged on one side of the step frame; the step frame is mounted on the mounting rack 1 and can move up and down relative to the mounting rack 1, and the matching part 5 is arranged on the step frame.

[0048] In this embodiment, the step frame is formed by splicing a plurality of step angle steels 41, and the step plate 42 is arranged on one side of the step frame for people to step on, meeting the safety requirements, and the material is easy to obtain, saving cost. Specifically, in this scheme, the step plate 42 is a galvanized steel grating plate, and the step angle steel 41 is provided with four.

[0049] In one of the embodiments, the mobile step 4 further comprises a connecting angle steel 43 horizontally arranged in the step frame and spacing the step frame into two cavities; the step plate 42 is arranged in one of the two cavities, and the mounting frame 1 is arranged in the other cavity.

[0050] In the embodiment, the connecting angle steel 43 is further arranged in the step frame, which improves the strength of the mobile step 4 and enables the hole position to be arranged on the connecting angle steel 43, thereby improving the connecting strength between the mounting frame 1 and the mobile step 4. Specifically, in the scheme, the opening of the step angle steel 41 is inward, so as to avoid the end edge of the step angle steel 41 outwardly scratching the personnel. In addition, in the embodiment, the plurality of step angle steels 41 are sequentially welded and connected, and the step plate 42 is welded to the step frame, so as to ensure the connecting strength.

[0051] In addition, the utility model also provides a ladder, the ladder includes the step subassembly of any one of the above. It needs to be explained that the detailed structure of the step subassembly of the ladder can refer to the embodiment of the step subassembly, and here is not repeated; since the step subassembly is used in the ladder of the utility model, therefore, the embodiment of the ladder of the utility model includes all the technical schemes of all the embodiments of the step subassembly, and the technical effects achieved are also completely same, and here is not repeated.

[0052] In order to better understand the utility model, the following is combined with Figures 1 to 4 The technical scheme of the utility model is explained in detail:

[0053] The utility model adopts the cantilever platform and the detachable angle steel 11 to form the movable step, and combines the construction ship to form the safe and reliable temporary pedestrian passage under different height water level conditions. The position of the cantilever platform can be adjusted according to the water level amplitude, so as to adapt to the smoothness of the ladder under the water level amplitude. The structure has simple construction technology, good stability, low investment cost and strong water level amplitude adaptability, and effectively guarantees the traffic safety of the construction personnel.

[0054] The specific implementation mode of the utility model described above does not constitute the limitation of the protection scope of the utility model. Any various other corresponding changes and deformation according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A step assembly, characterized by The application relates to a ladder step assembly. The ladder step assembly comprises a mounting structure, a fixing structure and a cantilever platform. The mounting structure comprises a mounting frame and a mounting part. The fixing structure is arranged on the mounting frame and is used for detachably mounting the mounting frame on a fixed step of a ladder. The cantilever platform comprises a movable step and a matching part.

2. The step assembly of claim 1, wherein, The movable step is mounted on the mounting frame and can move relative to the mounting frame. The matching part is arranged on the movable step and matches the mounting part. When the movable step moves to a preset position relative to the mounting frame, the matching part limits the movement of the movable step.

3. The step assembly of claim 2, wherein, The movable step is provided with a fixing hole in a horizontal direction. The mounting frame is provided with a plurality of groups of connecting holes corresponding to the fixing hole.

4. The step assembly of claim 3, wherein, The connecting holes are arranged in intervals along the moving direction of the movable step. The ladder step assembly further comprises connecting bolts and connecting nuts.

5. The step assembly of claim 1, wherein, The connecting bolts are arranged in any connecting hole and pass through the fixing hole. The connecting nuts are screwed on one end of the connecting bolts extending out of the fixing hole.

6. The step assembly of claim 5, wherein, The matching part is formed by the fixing hole.

7. The step assembly of claim 5, wherein, The mounting part is formed by the connecting hole. The fixing hole is arranged in intervals along its radial direction.

8. The step assembly of claim 5, wherein, The connecting holes in the same group correspond to the fixing holes in one-to-one correspondence.

9. The step assembly of claim 5, wherein, The connecting bolts and the connecting nuts are arranged in groups.

10. A ladder, characterized in that The connecting bolts and the connecting nuts correspond to the connecting holes in the same group. The mounting frame comprises two mounting angle steels. The mounting angle steels are arranged in intervals and are arranged with openings close to each other. Part of the mounting angle steels is arranged above the movable step to form an installation channel together with the movable step. The installation channel is used for passing through the fixed step. Each mounting angle steel is provided with the fixing hole. At least part of the connecting bolts and the connecting nuts form the fixing structure. The movable step comprises a step plate and a plurality of step angle steels. The step angle steels are sequentially connected to form a step frame. The step plate is arranged on one side of the step frame. The step frame is mounted on the mounting frame and can move up and down relative to the mounting frame. The matching part is arranged on the step frame. The step plate is a grid plate. The movable step further comprises a connecting angle steel. The connecting angle steel is arranged in the step frame and separates the step frame into two cavities. The step plate is arranged on one of the cavities. The mounting frame is arranged on the other cavity. The opening of the step angle steel faces inwards. The step angle steels are sequentially welded. The step plate is welded on the step frame. The application further relates to a ladder step assembly.

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