Foldable ladder capable of being stored and engineering machinery
By designing a retractable folding ladder, the backup problem in the event of a failure of the electric folding ladder is solved, rapid response and normal operation of the equipment are achieved, and the needs of getting on and off the vehicle are met. It is suitable for super-large hydraulic shovels and crawler engineering machinery used in mining.
Patent Information
- Application Number
- CN202422532360.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing super-large hydraulic shovel equipment cannot be used normally when the electric folding ladder fails, and there is a lack of spare ladders, which affects the normal operation of the equipment, and the ordinary escalator cannot be folded and stored.
A foldable ladder is designed, which includes a basic ladder and reversible upper and lower folding ladders. The ladder is fixed in position by anti-reversal components, and the detachable components are fixed on the slide rail or longitudinal beam to achieve rapid deployment and storage.
When the electric folding ladder fails, it provides a quick backup solution to ensure the normal operation of the equipment. The multiple hinged designs enable quick assembly and disassembly by one person to meet the height requirements for getting on and off the vehicle.
Smart Images
Figure CN223469214U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a foldable ladder which can be stored and belongs to the field of engineering machinery. BACKGROUND
[0002] The mine super large hydraulic shovel is generally equipped with an electric folding ladder or a rotary ladder because the equipment is huge and the cab is high from the ground.
[0003] According to market feedback, although the electric folding ladder is convenient to use, once a fault occurs, the driver cannot normally get on or off the equipment, which affects the normal use of the equipment.
[0004] At present, the market does not provide a spare ladder, and the ordinary off-vehicle escalator structure is applied to the super large hydraulic shovel. SUMMARY
[0005] In view of the above problems, the utility model provides a foldable ladder which can be stored and can realize temporary spare treatment quickly when the electric folding ladder cannot be normally used, so that the equipment is ensured not to be stopped for a long time due to the fault of the electric folding ladder.
[0006] The utility model realizes the following technical scheme:
[0007] In the first aspect, the utility model provides a foldable ladder which can be stored, including foundation ladder and upper and lower hinge connection of the upper folding ladder and lower folding ladder, the upper folding ladder and lower folding ladder are pasted on the front side of the foundation ladder after turning around the respective hinge point, the upper folding ladder and lower folding ladder are fixed on the foundation ladder, and the hinge connection of the upper folding ladder and the foundation ladder and the hinge connection of the lower folding ladder and the foundation ladder are each through at least one anti-turning part to fix the position of the upper and lower folding ladders.
[0008] In some embodiments, the upper edge of the foundation ladder is provided with at least one vertical downward extending clamping groove I near the inner hole peripheral surface of the upper folding ladder, the anti-turning part is a U-shaped stop sheet I with a groove at the bottom, the U-shaped stop sheet I is clamped on the inner hole peripheral surface of the upper folding ladder, and is vertically downward inserted on the foundation ladder when the groove is aligned with the clamping groove I, and the front and rear side plates of the U-shaped stop sheet I prevent the upper folding ladder from turning.
[0009] In some embodiments, the inner hole of the upper folding ladder is an n-shaped foot pedal hole after being unfolded on the foundation ladder, and the upper edge of the foundation ladder is provided with a clamping groove I on each side near the peripheral surface of the foot pedal hole, and the upper folding ladder and the foundation ladder are fixed together by clamping a U-shaped stop sheet I in each of the two clamping grooves I.
[0010] In some embodiments, the inner hole circumferential surface of the lower folding ladder is provided with at least one clamping groove II horizontally extending towards the hinge position near the lower edge of the base ladder, the anti-overturning part is a U-shaped stop piece II with a groove in the top, the U-shaped stop piece II is clamped on the base ladder, horizontally moves until being inserted on the lower folding ladder at the clamping groove II, and the front and rear vertical plates of the U-shaped stop piece II prevent the lower folding ladder from overturning.
[0011] In some embodiments, the inner hole of the lower folding ladder is a U-shaped foot pedal hole after the lower folding ladder is unfolded on the base ladder, and each of the two sides of the foot pedal hole of the lower folding ladder is provided with a clamping groove II, and the lower folding ladder and the base ladder are fixed together by clamping a U-shaped stop piece II in each of the two clamping grooves II.
[0012] In some embodiments, the foot pedal surfaces of the base ladder, the upper folding ladder and the lower folding ladder are all provided with anti-skid tooth-shaped structures.
[0013] In some embodiments, the two symmetrical vertical edges of the base ladder, the upper folding ladder and the lower folding ladder are both bent in the same direction to form 90-degree flanges, so as to increase the support strength of the base ladder, the upper folding ladder and the lower folding ladder.
[0014] In some embodiments, a plurality of through holes a are arranged on the base ladder at the gap region between the folded upper folding ladder and lower folding ladder, and the through holes a are used in cooperation with detachable components to fix the base ladder on the slide rail component in the pre-stored box body.
[0015] In some embodiments, the plurality of through holes a are used in cooperation with detachable components to fix the unfolded folding ladder base ladder on the rigid outer facade, or a plurality of through holes b are arranged on the base ladder and used in cooperation with detachable components to fix the unfolded folding ladder base ladder on the longitudinal beam outer side plate.
[0016] In a second aspect, the utility model provides an engineering machinery, including left longitudinal beam and right longitudinal beam, one tool box is inbedded in the left longitudinal beam and / or right longitudinal beam, the tool box is installed with slide rail component, the slide rail component is equipped with the foldable folding ladder of above -mentioned can be stored.
[0017] The utility model has the advantages of:
[0018] The folding ladder can be stored in the tool box in the longitudinal beam after being folded, and can meet the height requirement of getting on and off the vehicle after being unfolded, and has high practicability; the hinge type design at multiple positions can realize quick disassembly and assembly of the folding ladder by one person, and realize quick response and processing of faults. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the descriptions thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0020] In the drawings:
[0021] Figure 1 is a schematic diagram of a folding ladder in a folded state;
[0022] Figure 2 is a schematic diagram of a folding ladder in an unfolded state;
[0023] Figure 3 is a schematic diagram of a folding ladder being completely stored in a tool box;
[0024] Figure 4 is a schematic diagram of a tool box being opened and a folding ladder being started to be pulled out;
[0025] Figure 5 is a schematic diagram of a folding ladder being completely pulled out;
[0026] Figure 6 is a schematic diagram of a folding ladder in a normal use state.
[0027] Drawing identification: 1, longitudinal beam, 2, sealing plate, 3, folding ladder, 4, slide rail assembly, 5, detachable part, 6, detachable part; 101, threaded hole; 301, upper folding ladder, 302, base ladder, 303, lower folding ladder, 304, clamping groove I, 305, clamping groove II, 306, hinge, 307, U-shaped stop sheet I, 308, U-shaped stop sheet II, 309, through hole a, 310, through hole b.
[0028] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, and the following embodiments are used to illustrate the present application, but not to limit the scope of the present application.
[0030] In the description of the utility model, it needs to explain, the term "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model.
[0031] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning in the utility model.
[0032] As Figure 1 , As shown in Figure 2 , a storable folding ladder 3, comprising a base ladder 302 and an upper folding ladder 301 and a lower folding ladder 303 hingedly connected to the upper and lower ends of the base ladder 302, the upper folding ladder 301 and the lower folding ladder 303 are folded after turning around the respective hinges 306 and are attached to the front side of the base ladder 302; the upper folding ladder 301 and the lower folding ladder 303 are unfolded on the base ladder 302 and are flush with the base ladder 302, and at least one anti-turning part is provided at the hinge connection between the upper folding ladder 301 and the base ladder 302 and the hinge connection between the lower folding ladder 303 and the base ladder 302 to fix the position of the upper and lower folding ladders 301, 303.
[0033] Further, referring to Figure 1 , Further, referring to Figure 2 , the upper edge of the base ladder 302 is provided with at least one vertically downward extending card slot I 304 near the inner hole peripheral surface of the upper folding ladder 301, the anti-turning part is a U-shaped stop plate I 307 with a groove at the bottom, the U-shaped stop plate I 307 is clamped on the inner hole peripheral surface of the upper folding ladder 301, and is vertically downward inserted on the base ladder 302 when the groove is aligned with the card slot I 304, and the front and rear side plates of the U-shaped stop plate I 307 prevent the upper folding ladder 301 from turning over; the inner hole peripheral surface of the lower folding ladder 303 is provided with at least one horizontally extending card slot II 305 towards the hinge position near the lower edge of the base ladder 302, the anti-turning part is a U-shaped stop plate II 308 with a groove at the top, the U-shaped stop plate II 308 is clamped on the base ladder 302, and is moved horizontally until it is inserted on the lower folding ladder 303 at the card slot II 305, and the front and rear side plates of the U-shaped stop plate II 308 prevent the lower folding ladder 303 from turning over.
[0034] Further solutions are shown in Figure 1 , Figure 2 When the upper folding ladder 301 is unfolded on the base ladder 302, the inner hole is an n-shaped foot hole; the upper edge of the base ladder 302 is provided with a clamping groove I on the surface near the foot hole on each side, and the upper folding ladder 301 is fixed with the base ladder 302 by clamping a U-shaped stop piece I 307 in each of the two clamping grooves I.
[0035] Further solutions are shown in Figure 1 , Figure 2 The two symmetrical vertical edges of the base ladder 302, the upper folding ladder 301 and the lower folding ladder 303 are bent in the same direction to form a 90-degree flange, which increases the support strength of the base ladder 302, the upper folding ladder 301 and the lower folding ladder 303.
[0036] Further solutions are shown in Figure 1 , Figure 2 The foot surfaces of the base ladder 302, the upper folding ladder 301 and the lower folding ladder 303 are provided with anti-skid tooth-shaped structures, which are used for stepping and have anti-skid function.
[0037] Further solutions are shown in Figure 1 , Figure 2 , Figure 5 The base ladder 302 is provided with a plurality of through holes a 309 between the upper and lower folding ladders 301 and 303 after folding, and the slide rail component is provided with a plurality of threaded holes, which are used to fix the base ladder 302 on the slide rail component by cooperating with the detachable component 5 (preferably a bolt).
[0038] Further solutions are shown in Figure 1 , Figure 2 , Figure 4 , Figure 6 The longitudinal beam outer side plate is provided with a plurality of threaded holes 101, and the plurality of through holes a 309 cooperate with the detachable component 6 (preferably a bolt) to fix the unfolded folding ladder base ladder 302 on the longitudinal beam outer side plate; or, the base ladder 302 is provided with a plurality of through holes b 310, which cooperate with the detachable component 6 (preferably a bolt) to fix the unfolded folding ladder base ladder 302 on the longitudinal beam outer side plate.
[0039] When the folding ladder is needed for equipment, the following steps can be used for quick assembly.
[0040] The whole process of using the folding ladder is shown in Figures 3-6As shown in the figure:
[0041] 1、 Figure 3 For the position and normal state of the built-in tool box on the longitudinal beam, the cover plate is rotated along the hinge to open;
[0042] 2, as Figure 4 , Figure 5 shown, after opening the cover plate 2, the folding ladder 3 can be freely slid along the slide rail assembly 4; pull the folding ladder 3 out of the tool box;
[0043] 3, remove the detachable part 5, take off the folding ladder 3 from the slide rail assembly 4, and fix the folding ladder 3 on the outer side plate of the longitudinal beam through the detachable part 6, as Figure 6 shown.
[0044] 5, re-fix the cover plate 2, complete the whole replacement process.
[0045] When the standby folding ladder 3 is not used, the above steps can be operated in reverse to remove and save the folding ladder 3.
[0046] The engineering machinery provided by the utility model is described below, and the engineering machinery described below can be correspondingly referred to the foldable ladder described above.
[0047] The utility model provides an engineering machinery, including left longitudinal beam and right longitudinal beam, inlaying a tool box in left longitudinal beam and / or right longitudinal beam, installing slide rail part in tool box, and assembling the foldable ladder of above -mentioned on slide rail part.
[0048] The beneficial effects achieved by the engineering machinery provided by the utility model are consistent with the beneficial effects achieved by the foldable ladder provided by the utility model, so here is not repeated.
[0049] It should be noted that the above engineering machinery can be a mine super large hydraulic shovel or other tracked engineering machinery.
[0050] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail, so as not to obscure the understanding of the specification.
[0051] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, combinations of features of different embodiments also mean within the protection scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use in a combined manner according to the known technical solutions and the technical problems to be solved in this application.
[0052] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.
Claims
1. A foldable ladder with storage function, characterized in that: it comprises a base ladder and upper and lower foldable ladders hinged to the upper and lower ends of the base ladder, the upper and lower foldable ladders are folded and attached to the front side of the base ladder after being turned around the respective hinge points; the upper and lower foldable ladders are fixed in position by at least one anti-turning part at the hinge points between the upper foldable ladder and the base ladder and between the lower foldable ladder and the base ladder after being unfolded and flush with the base ladder; the upper edge of the base ladder is provided with at least one vertical downward extending clamping groove I near the inner hole circumferential surface of the upper foldable ladder, the anti-turning part is a U-shaped stopper I with a groove at the bottom, the U-shaped stopper I is clamped on the inner hole circumferential surface of the upper foldable ladder and is vertically downward inserted on the base ladder after the groove is aligned with the clamping groove I, the front and rear vertical plates of the U-shaped stopper I prevent the upper foldable ladder from turning.
2. The foldable ladder with storage function according to claim 1, characterized in that: the inner hole of the upper foldable ladder is an n-shaped foot pedal hole after being unfolded on the base ladder; the upper edge of the base ladder is provided with a clamping groove I on each side near the circumferential surface of the foot pedal hole, the upper foldable ladder and the base ladder are fixed together by clamping a U-shaped stopper I in each of the two clamping grooves I.
3. The foldable ladder with storage function according to claim 1, characterized in that: the inner hole circumferential surface of the lower foldable ladder is provided with at least one horizontal extending clamping groove II towards the hinge position near the lower edge of the base ladder, the anti-turning part is a U-shaped stopper II with a groove at the top, the U-shaped stopper II is clamped on the base ladder and is moved horizontally until being inserted on the lower foldable ladder at the clamping groove II, the front and rear vertical plates of the U-shaped stopper II prevent the lower foldable ladder from turning.
4. The foldable ladder with storage function according to claim 3, characterized in that: the inner hole of the lower foldable ladder is a U-shaped foot pedal hole after being unfolded on the base ladder; the circumferential surface of the foot pedal hole of the lower foldable ladder is provided with a clamping groove II on each side, the lower foldable ladder and the base ladder are fixed together by clamping a U-shaped stopper II in each of the two clamping grooves II.
5. The foldable ladder with storage function according to claim 1, characterized in that: the foot pedal surface of the base ladder, the upper foldable ladder and the lower foldable ladder is provided with an anti-skid tooth-shaped structure.
6. The foldable ladder with storage function according to claim 1, characterized in that: the two symmetrical vertical edges of the base ladder, the upper foldable ladder and the lower foldable ladder are bent in the same direction to form a 90-degree flange, thereby increasing the support strength of the base ladder, the upper foldable ladder and the lower foldable ladder.
7. The foldable ladder with storage function according to claim 1, characterized in that: the base ladder is provided with a plurality of through holes a at the gap area between the folded upper and lower foldable ladders, which are used to cooperate with the slide rail part of the detachable part to fix the base ladder on the slide rail part in the pre-storage box.
8. The foldable ladder with storage function according to claim 7, characterized in that: The multiple through holes a cooperate with the detachable components to fix the unfolded folding ladder base ladder on the rigid outer facade; or, the base ladder is provided with multiple through holes b, which cooperate with the detachable components to fix the unfolded folding ladder base ladder on the longitudinal beam outer side plate.
9. An engineering machine comprising a left longitudinal beam and a right longitudinal beam, characterized in that: A tool box is embedded in the left longitudinal beam and / or the right longitudinal beam, a slide rail component is installed in the tool box, and the stowable folding ladder according to any one of claims 1 to 8 is assembled on the slide rail component.