Crawling ladder

Abstract

The utility model provides a crawling ladder which comprises a mounting plate, a second plate surface, a plurality of supporting plates and a plurality of supporting plates. The first end of the rotating plate is hinged to the second plate surface; when the rotating plate is in a fixed state, the second end crosses the mounting groove to be connected with the second plate surface; when the rotating plate is in a dismounting state, the second end is separated from the second plate surface; each mounting assembly comprises a fixing plate and a connecting rod; when the rotating plate is in a fixed state, the rotating plate positions the fixed plate in the mounting groove, and the connecting rod is connected to the fixed plate and extends out of the second plate surface; and the ladder plate is connected to the connecting rod and is spaced from the rotating plate. According to the ladder stand provided by the invention, the rotating plate can be switched between the fixed state and the dismounting state by changing the connection relation of only one position between the second end of the rotating plate and the second plate surface, so that the dismounting work of the ladder plate can be conveniently and quickly completed. The maintenance efficiency of the crawling ladder is improved, and the maintenance difficulty and the maintenance cost are reduced.

Description

Technical Field

[0001] This application relates to the field of power plant maintenance equipment technology, and in particular to a ladder. Background Technology

[0002] A pumped-storage power station includes an upper reservoir, a water conveyance system, a powerhouse, a lower reservoir, a switchyard, and an outgoing line yard. Pumped-storage power stations utilize surplus electricity during the latter half of the night to drive pumps, drawing water from the lower reservoir to the upper reservoir for storage. The water is then released during the day and early night of the following day to generate electricity, flowing back into the lower reservoir, thus resolving the supply and demand imbalance between peak and off-peak periods in the power grid.

[0003] The powerhouse houses important electromechanical equipment such as pumped storage units and electrical equipment. To ensure the normal operation of the pumped storage power station, regular maintenance of the electromechanical equipment within the powerhouse is necessary. To facilitate maintenance by operators, ladders are installed at locations such as large equipment, spillways, work platforms, and access bridges within the powerhouse.

[0004] Due to the operating mode of pumped storage power stations, the humidity inside the plant is high, which makes the metal ladders prone to rust. If the rusted parts of the ladders are not treated in time, safety accidents may occur when workers use the ladders. However, replacing the entire ladder is not only time-consuming and labor-intensive, but also costly. Utility Model Content

[0005] In view of this, the purpose of this application is to propose a ladder to at least partially solve the problems raised in the background art.

[0006] Based on the above objectives, this application provides a ladder, comprising: a mounting plate, including a first plate surface and a second plate surface disposed opposite to each other, the first plate surface being used for contact and connection with a base, and the second plate surface being provided with a plurality of mounting grooves, the plurality of mounting grooves being spaced apart along a first direction; a rotating plate, including a first end and a second end disposed opposite to each other, the first end being hinged to the second plate surface; the rotating plate having a fixed state and a disassembled state, when the rotating plate is in the fixed state, the second end extends beyond the mounting grooves and connects to the second plate surface; when the rotating plate is in the disassembled state, the second end is separated from the second plate surface; a plurality of mounting components, each mounting component including a fixed plate and a connecting rod; when the rotating plate is in the fixed state, the rotating plate positions the fixed plate within the mounting grooves, the connecting rod is connected to the fixed plate and extends out of the second plate surface along a second direction; the second direction is perpendicular to the second plate surface; and a ladder plate, connected to the end of the connecting rod extending out of the second plate surface, and spaced apart from the rotating plate along the second direction.

[0007] Optionally, the ladder further comprises a safety plate, the safety plate is in sliding connection with the connecting rod; the safety plate has a stop climbing state and an unlocking state; when the safety plate is in the stop climbing state, the safety plate is in abutment with the rotating plate along the second direction; when the safety plate is in the unlocking state, the safety plate is spaced apart from the rotating plate along the second direction.

[0008] Optionally, the safety plate is fixedly connected with a limiting plate, the limiting plate is provided with a positioning through hole penetrating along the second direction; the second plate surface is fixedly connected with a locking plate extending along the second direction, the limiting plate is sleeved on the locking plate through the positioning through hole, and the locking plate is provided with a lock hole close to the second plate surface; when the safety plate is in the stop climbing state, the safety plate is located on one side of the lock hole close to the second plate surface, and the lock hole is used for installing a lock.

[0009] Optionally, the locking plate is provided with two limiting holes spaced apart from each other along the second direction, and the two limiting holes are close to one end of the connecting rod protruding from the second plate surface; when the safety plate is in the unlocking state, the safety plate is positioned between the two limiting holes through a first fastener penetrating the limiting holes.

[0010] Optionally, the limiting hole is a threaded hole, and the first fastener is a bolt.

[0011] Optionally, along the second direction, the interval distance between the two first fasteners penetrating the limiting holes is equal to the thickness of the safety plate.

[0012] Optionally, the safety plate is provided with two along the first direction, and the limiting plate is fixedly connected with the two safety plates respectively.

[0013] Optionally, each mounting assembly comprises two connecting rods, and the two connecting rods are spaced apart along a third direction; the first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0014] Optionally, when the rotating plate is in the fixed state, the second end is connected with the mounting plate through a bolt.

[0015] Optionally, the fixing plate is provided with a rod mounting hole penetrating along the second direction, the rod mounting hole is provided with a sink away from the hole opening of the second plate surface, the inner diameter of the sink is greater than the inner diameter of the rod mounting hole, one end of the connecting rod is provided with a limiting head, the connecting rod penetrates the rod mounting hole, and the limiting head is in abutment with the groove bottom of the sink.

[0016] From the above, it can be seen that the ladder provided by the present application can switch the rotating plate between the fixed state and the disassembled state by changing the connection relationship between the second end of the rotating plate and the second plate surface at only one position, and then the disassembly and assembly of the ladder plate can be conveniently and quickly completed. Compared with disassembling and assembling the whole ladder, the ladder provided by the present application can improve the maintenance efficiency of the ladder, reduce the maintenance difficulty and cost, and help ensure the normal operation of the power station. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 Fig. 2 is a schematic view of the ladder of the embodiment of the present application when the safety plate is in the unlocked state;

[0019] Figure 2 Fig. 3 is an exploded schematic view of the ladder of the embodiment of the present application;

[0020] Figure 3 Fig. 4 is a schematic view of the ladder of the embodiment of the present application when the safety plate is in the stop state;

[0021] Figure 4 Fig. 5 is a schematic view of the fixed plate of the ladder of the embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 100, mounting plate; 110, first plate surface; 120, second plate surface; 130, mounting groove; 140, hinged bracket;

[0024] 200, rotating plate; 210, first end; 220, second end;

[0025] 300, mounting assembly; 310, fixed plate; 311, rod mounting hole; 312, sink groove; 320, connecting rod; 321, limiting head;

[0026] 400, ladder plate; 500, safety plate;

[0027] 600, limiting plate; 610, positioning through hole;

[0028] 700, locking plate; 710, locking hole; 720, limiting hole. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] It should be noted that the relative arrangement of the components, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

[0031] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the scope of the application or its application or uses.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meaning understood by those skilled in the art to which the embodiments of the present application belong. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] Therefore, like Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiments of the present application provide a ladder, which comprises a mounting plate 100 comprising a first plate surface 110 and a second plate surface 120 arranged opposite to each other, the first plate surface 110 is used to be connected with a base body, and the second plate surface 120 is provided with a plurality of mounting grooves 130, the plurality of mounting grooves 130 are arranged along a first direction (such as Figure 1The rotating plate 200 includes a first end 210 and a second end 220 arranged opposite to each other, the first end 210 being hinged to the second plate surface 120; the rotating plate 200 has a fixed state and a disassembled state. When the rotating plate 200 is in the fixed state, the second end 220 extends across the mounting groove 130 and connects to the second plate surface 120; when the rotating plate 200 is in the disassembled state, the second end 220 is separated from the second plate surface 120; multiple mounting components 300, each mounting component 300 including a fixed plate 310 and a connecting rod 320; when the rotating plate 200 is in the fixed state, the rotating plate 200 positions the fixed plate 310 within the mounting groove 130, and the connecting rod 320 is connected to the fixed plate 310 and extends out of the second plate surface 120 in the second direction (e.g., ...). Figure 1 The second direction is perpendicular to the second plate surface 120; the ladder plate 400 is connected to the end of the connecting rod 320 that extends out of the second plate surface 120, and is spaced apart from the rotating plate 200 along the second direction.

[0035] For example, the substrate can be a wall or the outer wall of an equipment. The mounting plate 100 can be attached to the outer surface of the substrate by means of fastener connection, welding or hanging.

[0036] For example, corresponding to each rotating plate 200, two protruding and spaced hinges 140 can be provided on the second plate surface 120. The first end 210 of the rotating plate 200 is placed between the two hinges 140, and the hinge between the first end 210 and the hinge 140 is realized through the rotating shaft.

[0037] For example, the second end 220 of the rotating plate 200 can be connected to the second plate surface 120 by means of fastener connection, snap-fit ​​or plug-in.

[0038] For example, with Figure 2 Taking the structure and orientation shown as an example, the mounting groove 130 extends laterally, and the hinge 140 is positioned above the mounting groove 130. The first end 210 of the rotating plate 200 is hinged to the second plate surface 120 via the hinge 140, and the second end 220 of the rotating plate 200 can pass over the mounting groove 130 and connect to the second plate surface 120 below the mounting groove 130. When it is necessary to replace the mounting assembly 300, the rotating plate 200 in the disassembly / removal state can be flipped upwards until the entire assembly is positioned above the mounting groove 130, after which the fixing plate 310 can be removed from the mounting groove 130.

[0039] For example, the connecting rod 320 and the fixing plate 310 can be a fixed connection or a detachable connection.

[0040] For example, the ladder plate 400 and the connecting rod 320 can be a fixed connection or a detachable connection.

[0041] Exemplarily, the ladder board 400 can be connected with the end of the connecting rod 320 away from the fixing plate 310 through a bolt or a nut.

[0042] It should be noted that the socket of the mounting groove 130 is arranged on the second plate surface 120, the groove bottom is opposite to the socket, and the groove wall is between the socket and the groove bottom.

[0043] When the ladder is used to climb, the rotating plate 200 is in the fixed state, the fixing plate 310 cannot move perpendicularly to the second direction due to the limiting effect of the groove wall of the mounting groove 130, and the fixing plate 310 also cannot move along the second direction due to the limiting effect of the rotating plate 200 and the groove bottom of the mounting groove 130. At this time, the fixing plate 310, the connecting rod 320 and the ladder board 400 are all fixed in position with the mounting plate 100. The worker can pull and step the ladder board 400 by hand to realize climbing by means of the ladder.

[0044] When the ladder is used for a long time, the ladder board 400 or the connecting rod 320 is damaged, the rotating plate 200 corresponding to the ladder board 400 can be switched to the disassembling state, after the second end 220 of the rotating plate 200 is separated from the second plate surface 120, the rotating plate 200 can be rotated to a position away from the mounting groove 130, so that the rotating plate 200 no longer limits the fixing plate 310. At this time, the fixing plate 310 can be taken out of the mounting groove 130, and the disassembly of the damaged ladder board 400 can be completed. After that, the ladder board 400 that has been disassembled can be replaced or repaired.

[0045] After that, the fixing plate 310 connected with the new or maintained ladder board 400 is inserted into the empty mounting groove 130, and the rotating plate 200 is switched back to the fixed state, so that the maintenance of the ladder board 400 can be completed, and the ladder can be used normally again.

[0046] The ladder provided by the embodiment of the present application can switch the rotating plate 200 between the fixed state and the disassembling state by changing the connection relationship between only one of the second end 220 of the rotating plate 200 and the second plate surface 120, so that the disassembly and assembly of the ladder board 400 can be conveniently and quickly completed. Compared with disassembling and replacing the whole ladder, the ladder can help to improve the maintenance efficiency of the ladder, reduce the maintenance difficulty and cost, and help to ensure the normal operation of the power station.

[0047] As shown in Figure 1 , Figure 2 and Figure 3 , in some embodiments, the ladder further comprises a safety plate 500, and the safety plate 500 is in sliding connection with the connecting rod 320. The safety plate 500 has a stop climbing state and an unlocked state. When the safety plate 500 is in the stop climbing state, the safety plate 500 abuts against the rotating plate 200 along the second direction, as shown in Figure 3When the mounting plate 100 is in the unlocked state, the safety plate 500 is spaced apart from the rotating plate 200 in the second direction, as shown in Figure 1 .

[0048] For example, the safety plate 500 can be located at the lowermost part of the mounting plate 100.

[0049] For example, the safety plate 500 can be provided with a through hole penetrating in the second direction, and the safety plate 500 is sleeved on the connecting rod 320 through the through hole, so that the safety plate 500 and the connecting rod 320 are in sliding connection.

[0050] For example, the safety plate 500 can be provided with one, two or more, and when the safety plate 500 is provided with two or more, the safety plates 500 can be arranged continuously or spaced apart in the first direction.

[0051] When the ladder is normally used, the safety plate 500 is in the unlocked state. At this time, the safety plate 500 is spaced apart from the rotating plate 200 in the second direction, and the safety plate 500 can be used as a ladder plate 400 for the staff to pull by hand and step on, so that the staff can climb by means of the ladder.

[0052] When the ladder is not used, in order to avoid non-staff using the ladder, the safety plate 500 can be switched to the stop climbing state. At this time, the safety plate 500 abuts against the rotating plate 200 in the second direction, and the gap space between the safety plate 500 and the second plate surface 120 is insufficient for non-staff to normally pull by hand and step on. When the safety plate 500 in the stop climbing state exists in the ladder, non-staff cannot normally use the ladder plate 400 by passing through the safety plate 500 in the stop climbing state. Therefore, it can be avoided that non-staff uses the ladder to complete the climbing. The safety use of the ladder is ensured, and the mistaken climbing of non-staff is avoided.

[0053] For example, Figure 1 , Figure 2 and Figure 3 In some embodiments, the safety plate 500 is fixedly connected with a limiting plate 600, the limiting plate 600 is provided with a positioning through hole 610 penetrating in the second direction; the second plate surface 120 is fixedly connected with a locking plate 700 extending in the second direction, the limiting plate 600 is sleeved on the locking plate 700 through the positioning through hole 610, and the locking plate 700 is provided with a lock hole 710 close to the second plate surface 120; when the safety plate 500 is in the stop climbing state, the safety plate 500 is located on the side of the lock hole 710 close to the second plate surface 120, and the lock hole 710 is used for installing a lock.

[0054] When the ladder is not in use, a lock can be installed on the lock hole 710, which can only be opened by the staff who have the right to use the ladder. The lock on the lock hole 710 can limit the position of the limiting plate 600 to the position close to the second plate surface 120. The limiting plate 600 acts on the safety plate 500 to make the safety plate 500 keep in close contact with the rotating plate 200, so that the safety plate 500 is stably in the anti-climbing state. It ensures the safe use of the ladder and prevents non-staff from climbing by mistake.

[0055] After the staff who have the right to use the ladder remove the lock from the lock hole 710, the limiting plate 600 can slide along the locking plate 700 away from the second plate surface 120, and the safety plate 500 also slides with the limiting plate 600, so that the safety plate 500 and the second plate surface 120 form a gap space sufficient for the staff to use normally.

[0056] As Figure 1 , Figure 2 and Figure 3 In some embodiments, the locking plate 700 is provided with two limiting holes 720 spaced apart from each other in the second direction, and the two limiting holes 720 are close to the end of the connecting rod 320 extending out of the second plate surface 120; when the safety plate 500 is in the unlocked state, the safety plate 500 is positioned between the two limiting holes 720 by the first fastener (not shown in the figure) arranged in the limiting hole 720.

[0057] For example, the first fastener can be a bolt or a positioning pin.

[0058] For example, the first fastener corresponds to the limiting hole 720 one by one.

[0059] When the ladder is in use, the safety plate 500 can be slid from the side of the lock hole 710 close to the second plate surface 120 to the limiting hole 720. When the safety plate 500 is slid between the two limiting holes 720, a part of the first fastener is arranged in the limiting hole 720 to realize the connection of the first fastener and the locking plate 700. At this time, the safety plate 500 is limited between the two first fasteners (i.e. the part of the first fastener extending out of the limiting hole 720) to ensure that the safety plate 500 can stably be in the unlocked state, so that the staff can safely and smoothly climb through the ladder.

[0060] In some embodiments, the limiting hole 720 is a threaded hole, and the first fastener is a bolt.

[0061] When it is necessary to limit the safety plate 500 between the two limiting holes 720, the first fastener is screwed with the limiting hole 720, and the nut of the first fastener is located outside the limiting hole 720 to limit the safety plate 500.

[0062] When it is needed to slide the safety plate 500 to the side of the locking hole 710 close to the second plate surface 120, the two first fasteners can be rotated off to release the position limitation of the safety plate 500, and the safety plate 500 can be freely slid along the locking plate 700.

[0063] The bolt is selected as the first fastener, and the limiting hole 720 is set as a matching threaded hole, which not only facilitates the disassembly of the first fastener, but also helps to reduce the cost of the first fastener.

[0064] In some embodiments, along the second direction, the interval distance between the two first fasteners passing through the limiting hole 720 is equal to the thickness of the safety plate 500.

[0065] In the present embodiment, when the safety plate 500 is located between the two first fasteners, since the interval distance between the two first fasteners is equal to the thickness of the safety plate 500, the safety plate 500 will be in contact with the two first fasteners at the same time. Under the joint limiting action of the two first fasteners, the position of the safety plate 500 is stable and no longer moves along the second direction. The safety of the ladder stand can be further ensured, and the risk of safety accidents of the worker due to the shaking of the safety plate 500 when using the ladder stand can be reduced.

[0066] As Figure 1 , Figure 2 and Figure 3 In some embodiments, the safety plate 500 is provided with two along the first direction, and the limiting plate 600 is fixedly connected with the two safety plates 500, respectively.

[0067] Illustratively, the limiting plate 600 is provided with two, and the two limiting plates 600 are located on the two sides of the rotating plate 200, respectively.

[0068] Illustratively, the locking plate 700 is provided with only one.

[0069] Illustratively, the limiting plate 600 and the safety plate 500 can be fixedly connected by welding, fastener connection or one-piece forming connection and the like.

[0070] When the two safety plates 500 are in the stop climbing state, it is more difficult for non-workers to use the ladder plate 400 by climbing over the two safety plates 500. At the same time, the setting of the two safety plates 500 does not increase the workload of moving and positioning the limiting plate 600, which is convenient for the worker to operate.

[0071] As Figure 1 and Figure 3 In some embodiments, each mounting assembly 300 includes two connecting rods 320, and the two connecting rods 320 are along the third direction (such as Figure 1The first direction, the second direction and the third direction are perpendicular to each other.

[0072] The two connecting rods 320 can make the ladder board 400 and the safety board 500 more stable, prevent the ladder board 400 or the safety board 500 from rotating around the connecting rod 320, and further ensure the safety of the ladder stand.

[0073] In some embodiments, when the rotating plate 200 is in a fixed state, the second end 220 is connected to the mounting plate 100 by a bolt.

[0074] For example, the second surface 120 of the safety board 500 is provided with a threaded hole corresponding to the bolt on the second end 220.

[0075] The bolt is used to fix the second end 220, which not only facilitates the connection and disassembly between the second end 220 and the mounting plate 100, but also helps to reduce the cost of the ladder stand. At the same time, when the bolt is tightened, it can ensure that the second end 220 and the mounting plate 100 form a stable and reliable connection, ensure that the rotating plate 200 can reliably limit the fixed plate 310, ensure that the ladder board 400 and the safety board 500 are relatively stable, and further ensure the safety of the ladder stand.

[0076] For example, Figure 4 In some embodiments, the fixed plate 310 is provided with a rod mounting hole 311 penetrating along the second direction, the hole opening of the rod mounting hole 311 away from the second surface 120 is provided with a sink groove 312, the inner diameter of the sink groove 312 is greater than the inner diameter of the rod mounting hole 311, one end of the connecting rod 320 is provided with a limiting head 321, the connecting rod 320 is inserted into the rod mounting hole 311, and the limiting head 321 abuts against the groove bottom of the sink groove 312.

[0077] For example, the rod mounting hole 311 and the sink groove 312 are coaxial.

[0078] The connecting rod 320 is inserted and fitted with the fixed plate 310 through the rod mounting hole 311, which can reduce the assembly difficulty between the connecting rod 320 and the fixed plate 310. When the fixed plate 310 is positioned in the mounting groove 130, the groove bottom of the mounting groove 130 can abut against the limiting head 321, so that the limiting head 321 remains abutting against the groove bottom of the sink groove 312. The limiting head 321 will not move along the second direction under the joint action of the groove bottom of the mounting groove 130 and the groove bottom of the sink groove 312, and a stable and reliable connection between the connecting rod 320 and the fixed plate 310 can be formed, which ensures that the ladder board 400 and the safety board 500 connected with the connecting rod 320 are relatively stable, and further ensures the safety of the ladder stand.

[0079] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims.

[0080] Each of the individual embodiments in the present application is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be understood by mutual reference.

[0081] The description of the present application is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application in order to design various embodiments with various modifications for specific use cases.

[0082] Those of ordinary skill in the art will understand that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest that the scope of the present application is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other variations of the aspects of the embodiments of the present application as described above, which are not provided in detail. In order to be brief, they are not provided in detail.

[0083] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those skilled in the art from the foregoing description.

[0084] The embodiments of the present application are intended to cover all such alternatives, modifications and variations as falling within the broad scope of the present application. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the present application shall be included in the protection scope of the present application.

Claims

1. A ladder, characterized in that The utility model relates to a ladder, including: a mounting plate including oppositely arranged first and second plate surfaces, the first plate surface being used for abutting connection with a base body, and the second plate surface being provided with a plurality of mounting grooves arranged at intervals along a first direction; a rotating plate including oppositely arranged first and second ends, the first end being hingedly connected to the second plate surface, the rotating plate having a fixed state and a disassembled state, when the rotating plate is in the fixed state, the second end is connected to the second plate surface beyond the mounting grooves, and when the rotating plate is in the disassembled state, the second end is separated from the second plate surface; a plurality of mounting assemblies, each mounting assembly including a fixing plate and a connecting rod, when the rotating plate is in the fixed state, the rotating plate positions the fixing plate in the mounting grooves, and the connecting rod is connected to the fixing plate and extends beyond the second plate surface along a second direction, the second direction being perpendicular to the second plate surface; a ladder board connected to one end of the connecting rod extending beyond the second plate surface and arranged at intervals with the rotating plate along the second direction.

2. The ladder stand of claim 1, wherein, The ladder further includes a safety plate slidably connected to the connecting rod, the safety plate having a stop state and an unlocked state, when the safety plate is in the stop state, the safety plate abuts against the rotating plate along the second direction, and when the mounting plate is in the unlocked state, the safety plate is arranged at intervals with the rotating plate along the second direction.

3. The ladder stand of claim 2, wherein, The safety plate is fixedly connected to a limiting plate provided with a positioning through hole penetrating along the second direction, the second plate surface is fixedly connected to a locking plate extending along the second direction, the limiting plate is sleeved on the locking plate through the positioning through hole, and the locking plate is provided with a lock hole close to the second plate surface, when the safety plate is in the stop state, the safety plate is located on one side of the lock hole close to the second plate surface, and the lock hole is used for mounting a lock.

4. The ladder stand of claim 3, wherein, The locking plate is provided with two limiting holes arranged at intervals along the second direction, and the two limiting holes are close to one end of the connecting rod extending beyond the second plate surface, when the safety plate is in the unlocked state, the safety plate is positioned between the two limiting holes through a first fastener penetrating the limiting holes.

5. The ladder stand of claim 4, wherein, The limiting holes are threaded holes, and the first fastener is a bolt.

6. The ladder stand of claim 4, wherein, Along the second direction, the interval distance between the two first fasteners penetrating the limiting holes is equal to the thickness of the safety plate.

7. The ladder stand of claim 3 wherein, The safety plate is arranged at intervals along the first direction, and the limiting plate is fixedly connected to the two safety plates respectively.

8. The ladder stand of claim 1, wherein, Each mounting assembly includes two connecting rods arranged at intervals along a third direction, and the first, second and third directions are perpendicular to each other.

9. The ladder stand of claim 1, wherein, When the rotating plate is in the fixed state, the second end is connected to the mounting plate through a bolt.

10. The ladder stand of claim 1, wherein, The fixed plate is provided with a rod mounting hole penetrating in the second direction, the rod mounting hole is provided with a sink groove away from the hole opening of the second plate surface, the inner diameter of the sink groove is greater than the inner diameter of the rod mounting hole, one end of the connecting rod is provided with a limiting head, the connecting rod is arranged in the rod mounting hole, and the limiting head is in abutment with the groove bottom of the sink groove.

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