Folding ladder stand

Abstract

The utility model discloses a folding ladder stand which comprises a mounting seat, and a first connecting support leg and a second connecting support leg are arranged on one side surface of the mounting seat. The upper end of the first ladder stand support is rotationally connected with the free end of the first connecting supporting leg, and the first ladder stand support is provided with a first limiting groove. The connecting frame is rotationally connected with the free end part of the second connecting support leg; a limiting rod is arranged at the position, away from the second connecting supporting leg, of the connecting frame. The upper end part of the second ladder stand bracket is rotationally connected with the lower end part of the first ladder stand bracket; and the upper end part of the second ladder stand bracket is also provided with an extension end part in an extending manner, and the extension end part is rotationally connected with the connecting frame at a position far away from the second connecting support leg. When the folding ladder stand is stored, the second ladder stand support rotates upwards and abuts against the first ladder stand support, at the moment, the folding ladder stand is in a folding state, the occupied space of the ladder stand in the folding state is relatively small, storage is facilitated, occupied space is reduced, and transportation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to climbing equipment technical field especially relates to a folding ladder. BACKGROUND

[0002] The mobile crushing and screening machine cannot be super wide and super high for convenient transportation. The mobile crushing and screening machine has a certain height, and the staff needs to use a ladder to move up and down the mobile crushing and screening machine. The existing climbing ladder of the mobile crushing and screening machine is usually a detachable climbing ladder, which is detached for transportation, or the climbing ladder is fixed, and the fixed climbing ladder usually occupies too large a volume, which is not conducive to transportation. UTILITY MODEL CONTENT

[0003] In view of the above problems, the utility model provides a folding ladder, which can solve the problem of large space occupation of the existing climbing ladder of the mobile crushing and screening machine.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A folding ladder comprises:

[0006] A mounting seat is provided with a first connecting leg and a second connecting leg on one side surface, and the first connecting leg is located above the second connecting leg;

[0007] A first ladder support is rotatably connected to the free end of the first connecting leg at the upper end, and the first ladder support is provided with a first limiting slot on the side surface facing the mounting seat;

[0008] A connecting frame is rotatably connected to the free end of the second connecting leg, and the connecting frame is provided with a limiting rod at a position away from the second connecting leg;

[0009] A second ladder support is rotatably connected to the lower end of the first ladder support at the upper end, and the upper end of the second ladder support is further provided with an extension end, which is rotatably connected to the connecting frame at a position away from the second connecting leg;

[0010] When the second ladder support is rotated downward, the limiting rod can be clamped into the first limiting slot to prevent the second ladder support from continuing to rotate downward, and at this time, the extension directions of the first ladder support and the second ladder support are consistent.

[0011] Further, the first ladder support is provided with an abutting piece, which is transversely arranged on the first ladder support, and the first limiting slot is transversely arranged on the abutting piece.

[0012] Further, when the second ladder support is rotated upward, the second ladder support approaches the first ladder support.

[0013] Further, a limiting plate is arranged on the side of the second ladder support away from the mounting base and in a direction away from the mounting base, and a second limiting pin hole is formed in the limiting plate;

[0014] A first limiting pin hole is formed in the side of the first ladder support, and when the second ladder support is rotated upward and approaches the first ladder support, the second limiting pin hole is opposite to the first limiting pin hole and the limiting pin is inserted into the first limiting pin hole.

[0015] Further, a semicircular arc-shaped through slot is formed in the side of the first ladder support where the first limiting pin hole is formed, and the first limiting pin hole is located at the center of the semicircular arc-shaped through slot;

[0016] The limiting pin is an O-shaped pin;

[0017] When the second ladder support is rotated upward and approaches the first ladder support, the limiting plate does not completely cover the through slot so as to facilitate the O-shaped limiting pin to pass through.

[0018] Further, the first ladder support is respectively provided with a first side plate on the left and right sides thereof;

[0019] The second ladder support is respectively provided with a second side plate on the left and right sides thereof;

[0020] The distance between the second side plates on the left and right sides is greater than the distance between the first side plates on the left and right sides, so that when the second ladder support is rotated upward and approaches the first ladder support, the first side plates on the left and right sides are partially located between the second side plates on the left and right sides.

[0021] Further, the first side plates on the left and right sides are respectively provided with a handrail, and the distance between the handrails on the left and right sides is greater than the distance between the second side plates on the left and right sides, so that when the second ladder support is rotated upward and approaches the first ladder support, the second side plates on the left and right sides are located between the handrails on the left and right sides.

[0022] Further, the second side plates on the left and right sides are respectively provided with a receiving groove, and when the second ladder support is rotated upward and approaches the first ladder support, the free end of the first connecting leg is located in the receiving groove.

[0023] Further, a plurality of second steps are arranged on the second ladder support, and the plurality of second steps are located between the second side plates on the left and right sides and are distributed along the length direction of the second side plates;

[0024] The second side plates on the left and right sides are respectively provided with a second supporting plate extending inward at the side edge close to the mounting base, and the second steps are connected with the second supporting plates.

[0025] Compared with the prior art, the beneficial effects of this utility model are: When the folding ladder of this utility model is stored, the second ladder support is rotated upward and close to the first ladder support. At this time, it is in a folded state. The folded ladder occupies less space, which is more conducive to storage, reduces space occupation, and facilitates transportation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0027] Figure 1 This is a structural schematic diagram of the folding ladder of this utility model in its unfolded state;

[0028] Figure 2 This is a side view of the folding ladder of this utility model in its unfolded state.

[0029] Figure 3 This is a schematic diagram of the folding ladder of this utility model in the folded state.

[0030] Figure 4 This is a side view of the folding ladder of this utility model in its folded state.

[0031] Figure 5 This is an exploded view of the folding ladder of this utility model;

[0032] Figure 6 This is a schematic diagram of the mounting base for the folding ladder of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the first ladder support of the folding ladder of this utility model;

[0034] Figure 8 This is a schematic diagram of the structure of the second ladder support of the folding ladder of this utility model.

[0035] 10-Mounting base; 11-First connecting leg; 12-Second connecting leg; 13-Elongated hole; 14-Reinforcing plate; 15-Intermediate plate; 16-Mounting base side plate; 20-First ladder bracket; 21-First limiting groove; 22-Abutting part; 23-First limiting pin hole; 24-Through groove; 25-First side plate; 26-Handrail; 27-First step; 28-First support plate; 30-Connecting frame; 31-Limiting rod; 32-Rotating connecting rod; 40-Second ladder bracket; 41-Extension end; 42-Limiting plate; 43-Second limiting pin hole; 44-Second side plate; 45-Receiving groove; 46-Second step; 47-Second support plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0039] Please refer to Figures 1 to 8 The present application provides a folding ladder, which mainly comprises a mounting seat 10, a first ladder support 20, a connecting frame 30 and a second ladder support 40.

[0040] The mounting base 10 is used to be connected with the mobile crushing and screening machine. In the preferred embodiment, the mounting base 10 is in the shape of a U, and the opening is directed away from the mobile crushing and screening machine. A plurality of long holes 13 are formed in the middle plate body 15 of the U-shaped mounting base 10. By screwing the screws through the long holes 13 and into the threaded holes of the mobile crushing and screening machine, the mounting base 10 can be fixedly mounted on the mobile crushing and screening machine, and at this time, the folding ladder is mounted on the mobile crushing and screening machine. This mounting mode is detachable, and it is convenient and fast to install. When not in use, the ladder can be completely disassembled, which is also convenient for later maintenance and maintenance. Through the detachable mode, the ladder can be moved to multiple components for use, such as the crusher, screening machine, mobile conveying station and other equipment. The two sides of the U-shaped mounting base 10 are mounting side plates 16, and a reinforcing plate 14 is fixedly arranged between the mounting side plates 16. The reinforcing plate 14 is fixedly connected with the middle plate body 15 of the mounting base 10, so as to integrally enhance the strength of the mounting base 10. The mounting side plates 16 and the reinforcing plate 14 on the two sides of the mounting base 10 are partially hollowed out, which reduces the material and weight on the premise of ensuring the strength, and achieves the purpose of light weight.

[0041] The first connecting leg 11 and the second connecting leg 12 are arranged on the side of the mounting base 10 away from the mobile crushing and screening machine. At this time, since the mounting base 10 is in the shape of a U in the preferred embodiment, and the side is located at the opening, the first connecting leg 11 and the second connecting leg 12 are arranged on the mounting side plates 16 on the two sides of the mounting base 10 and extend away from the mobile crushing and screening machine. The first connecting leg 11 is located above the second connecting leg 12. The first connecting leg 11 and the second connecting leg 12 are respectively two, and the two first connecting legs 11 extend obliquely upward, and the two second connecting legs 12 extend obliquely downward.

[0042] The first ladder support 20 is a ladder unit, that is, it is a ladder with a relatively short length. The first ladder support 20 has a plurality of first steps 27, and the plurality of first steps 27 are distributed along the length direction of the first ladder support 20.

[0043] The upper end of the first ladder support 20 is rotatably connected with the free end of the first connecting leg 11, and specifically, the left and right sides of the first ladder support 20 are respectively rotatably connected with the two first connecting legs 11.

[0044] The first ladder support 20 is provided with a first limiting groove 21 at the side facing the mounting base 10.

[0045] The connecting frame 30 comprises two rotating connecting rods 32 on both sides, and a limiting rod 31 between the two rotating connecting rods 32, which is located at a position away from the second connecting leg 12 and forms a U-shaped structure with the two rotating connecting rods 32. The connecting frame 30 is rotationally connected to the free end of the second connecting leg 12, specifically, the two rotating connecting rods 32 on both sides of the connecting frame 30 are respectively rotationally connected to the free ends of the two second connecting legs 12, at this time, the limiting rod 31 can swing.

[0046] The second ladder stand 40 is a ladder unit, that is, it is a ladder with a relatively short length. The second ladder stand 40 is provided with a plurality of second steps 46, which are distributed along the length direction of the second side plate 44. The upper end of the second ladder stand 40 is rotationally connected to the lower end of the first ladder stand 20. In the preferred embodiment, the rotationally connected point of the second ladder stand 40 and the first ladder stand 20 is at a position away from the side surface of the connecting frame 30.

[0047] The upper end of the second ladder stand 40 is further provided with an extension end 41, which is arranged at a position close to the side surface of the connecting frame 30, and the extension end 41 is rotationally connected to the connecting frame 30 at a position away from the second connecting leg 12. At this time, the upper end of the second ladder stand 40 can rotate with the lower end of the first ladder stand 20, and the upper end of the second ladder stand 40 rotates with the connecting frame 30 through the extension end 41.

[0048] In implementation, the second ladder stand 40 can be rotated downward, and the limiting rod 31 is clamped into the first limiting slot 21 so that the second ladder stand 40 cannot continue to rotate downward, at this time, the extension directions of the first ladder stand 20 and the second ladder stand 40 are consistent, and the folding ladder is in an unfolded and used state, as shown in Figure 1 and Figure 2 , the user can climb up and down along the first ladder stand 20 and the second ladder stand 40. The second ladder stand 40 can also be rotated upward, at this time, the limiting rod 31 is away from the first limiting slot 21, the connecting frame 30 is pulled and the end (lower end) of the first ladder stand 20 away from the mounting base 10 is moved towards the mounting base 10, until the second ladder stand 40 is flipped upward by about 180°, and the second ladder stand 40 approaches the first ladder stand 20, at this time, it is in a folded state, as shown in Figure 3 and Figure 4 , the folding ladder occupies a relatively smaller space, which is more helpful for storage and reduces space occupation, and is helpful for transportation.

[0049] In the preferred embodiment, the first ladder support 20 is provided with an abutting piece 22, which is transversely arranged on the first ladder support 20, and the first limiting slot 21 is transversely arranged on the abutting piece 22. At this time, the first limiting slot 21 has a larger area and is in contact with the limiting rod 31 in a larger area, thereby achieving better abutment to achieve better stress when the limiting rod 31 is clamped into the first limiting slot 21, thereby ensuring the strength of the folding ladder when it is in the unfolded state. That is, through a larger contact area, the ladder can withstand greater force, making the structure more stable.

[0050] The second ladder support 40 is provided with a limiting plate 42 on the side away from the mounting base 10 and facing away from the mounting base 10. The limiting plate 42 is provided with a second limiting pin hole 43. The side of the first ladder support 20 is provided with a first limiting pin hole 23. When the second ladder support 40 is turned upward and approaches the first ladder support 20, the second limiting pin hole 43 is opposite to the first limiting pin hole 23 and is inserted into a limiting pin (not shown in the figure). At this time, under the action of the limiting pin, the second ladder support 40 and the first ladder support 20 cannot move relative to each other, that is, the position of the second ladder support 40 is fixed, that is, it can prevent the second ladder support 40 from turning downward. When the mobile crushing and screening machine is transferred, the second ladder support 40 is turned upward and approaches the first ladder support 20, so that the ladder is in a folded state to facilitate transportation. During transportation, there may be vibration, etc. If the second ladder support 40 is not fixed, it is easy to fall downward. At this time, the second limiting pin hole 43, the first limiting pin hole 23 and the limiting pin can fix the second ladder support 40 when it is folded to prevent it from falling downward due to jolting.

[0051] The first ladder support 20 is respectively provided with a first side plate 25 on the opposite left and right sides. A plurality of first steps 27 are located between the two first side plates 25, and together form a short ladder structure through the plurality of first steps 27. The second ladder support 40 is respectively provided with a second side plate 44 on the opposite left and right sides. A plurality of second steps 46 are located between the two second side plates 44, and together form a short ladder structure through the plurality of second steps 46.

[0052] The first limiting pin hole 23 is arranged on the first side plate 25, and the first ladder support 20 is provided with a semicircular arc-shaped through slot 24 at the first side plate 25 where the first limiting pin hole 23 is arranged. The first limiting pin hole 23 is located at the center of the semicircular arc-shaped through slot 24, and the limiting pin is an O-shaped pin. When the second ladder support 40 is turned upward and approaches the first ladder support 20, the limiting plate 42 does not completely cover the through slot 24 so as to allow the O-shaped pin to pass through. That is, the pin shaft of the O-shaped pin passes through the first limiting pin hole 23, and the O-shaped ring of the O-shaped pin can pass through the semicircular arc-shaped through slot 24.

[0053] The distance between the second side plates 44 on both sides is greater than the distance between the first side plates 25 on both sides, so that when the second ladder stand 40 is turned upward and approaches the first ladder stand 20, the first side plates 25 on both sides are partially located between the second side plates 44 on both sides, at this time, the second ladder stand 40 can be more deeply clamped into the first ladder stand 20, so that the folding degree of the second ladder stand 40 is greater.

[0054] The first side plates 25 on both sides are respectively provided with handrails 26, which help users to grasp and climb when climbing the ladder, and are convenient and safer to use. The distance between the handrails 26 on both sides is greater than the distance between the second side plates 44 on both sides, so that when the second ladder stand 40 is turned upward and approaches the first ladder stand 20, the second side plates 44 on both sides are located between the handrails 26 on both sides, at this time, the second ladder stand 40 can be more deeply clamped into the first ladder stand 20, so that the folding degree of the second ladder stand 40 is greater.

[0055] The second side plates 44 on both sides are respectively provided with accommodating grooves 45, and when the second ladder stand 40 is turned upward and approaches the first ladder stand 20, the free end of the first connecting leg 11 is located in the accommodating groove 45. By providing the accommodating groove 45, the free end of the first connecting leg 11 can enter the accommodating groove 45, so as to make the second ladder stand 40 closer to the mounting base 10 when folding, so as to achieve a greater folding degree.

[0056] The second side plates 44 on both sides are respectively provided with inwardly extending second supporting plates 47 at the side edges close to the mounting base 10, and the second steps 46 are connected with the second supporting plates 47. The second supporting plates 47 are integrally formed with the second side plates 44 by bending, and by providing the second supporting plates 47, the load bearing of the second steps 46 can be realized, so as to enhance the connection strength between the second steps 46 and the second side plates 44 on both sides.

[0057] Similarly, the first side plates 25 on both sides are respectively provided with inwardly extending first supporting plates 28 at the side edges close to the mounting base 10, and the first steps 27 are connected with the first supporting plates 28. The first supporting plates 28 are integrally formed with the first side plates 25 by bending, and by providing the first supporting plates 28, the load bearing of the first steps 27 can be realized, so as to enhance the connection strength between the first steps 27 and the first side plates 25 on both sides.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A folding cat ladder, characterized in that, The utility model relates to a folding ladder, comprising: a mounting base (10) provided with a first connecting leg (11) and a second connecting leg (12) at one side of the mounting base (10), the first connecting leg (11) being located above the second connecting leg (12); a first ladder support (20) having an upper end rotatably connected to a free end of the first connecting leg (11), the first ladder support (20) being provided with a first limiting slot (21) at a side facing the mounting base (10); a connecting frame (30) rotatably connected to a free end of the second connecting leg (12), the connecting frame (30) being provided with a limiting rod (31) at a position away from the second connecting leg (12); a second ladder support (40) having an upper end rotatably connected to a lower end of the first ladder support (20), the upper end of the second ladder support (40) further extending to form an extension end (41) rotatably connected to the connecting frame (30) at a position away from the second connecting leg (12); and when the second ladder support (40) is rotated downward, the limiting rod (31) can be clamped into the first limiting slot (21) so that the second ladder support (40) cannot continue to rotate downward, at this time, the first ladder support (20) and the second ladder support (40) have the same extension direction.

2. The folding ladder according to claim 1, wherein the first ladder support (20) is provided with an abutting piece (22) transversely arranged on the first ladder support (20), and the first limiting slot (21) is transversely formed in the abutting piece (22).

3. The folding ladder according to claim 1, wherein when the second ladder support (40) is rotated upward, the second ladder support (40) approaches the first ladder support (20).

4. The folding ladder according to claim 3, wherein the second ladder support (40) is provided with a limiting plate (42) at a position away from the mounting base (10) on a side of the second ladder support (40) away from the mounting base (10), and the limiting plate (42) is provided with a second limiting pin hole (43); the first ladder support (20) is provided with a first limiting pin hole (23) at a side of the first ladder support (20), and when the second ladder support (40) is rotated upward and approaches the first ladder support (20), the second limiting pin hole (43) is opposite to the first limiting pin hole (23) and is inserted with a limiting pin.

5. The folding ladder according to claim 4, wherein the first ladder support (20) is provided with a semicircular through slot (24) at a side of the first ladder support (20) where the first limiting pin hole (23) is formed, and the first limiting pin hole (23) is located at a center of the semicircular through slot (24); the limiting pin is an O-shaped pin; and when the second ladder support (40) is rotated upward and approaches the first ladder support (20), the limiting plate (42) does not completely cover the through slot (24) so as to allow the limiting pin which is an O-shaped pin to pass through.

6. The folding ladder of claim 3, wherein, the first ladder support (20) is provided with a first side plate (25) on each of the opposite sides thereof; the second ladder support (40) is provided with a second side plate (44) on each of the opposite sides thereof; the distance between the second side plates (44) is greater than the distance between the first side plates (25), so that when the second ladder support (40) is turned upward and approaches the first ladder support (20), the first side plates (25) are partially located between the second side plates (44).

7. The folding ladder of claim 6, wherein, the first side plates (25) are provided with a handrail (26) on each of the opposite sides thereof, and the distance between the handrails (26) is greater than the distance between the second side plates (44), so that when the second ladder support (40) is turned upward and approaches the first ladder support (20), the second side plates (44) are located between the handrails (26).

8. The folding ladder of claim 6, wherein, the second side plates (44) are provided with a receiving groove (45) on each of the opposite sides thereof, and when the second ladder support (40) is turned upward and approaches the first ladder support (20), the free end of the first connecting leg (11) is located in the receiving groove (45).

9. The folding ladder of claim 6, wherein, the second ladder support (40) is provided with a plurality of second steps (46), and the second steps (46) are located between the second side plates (44) and distributed along the length direction of the second side plates (44); the second side plates (44) are provided with a second supporting plate (47) extending inward on each of the sides thereof close to the mounting base (10), and the second steps (46) are connected to the second supporting plates (47).

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