Ladder leveling device

Abstract

The utility model relates to the technical field of ladder accessories, and provides a ladder leveling device which comprises a base, a lifting support and a supporting plate, the lifting support comprises a supporting frame, a sliding frame, a rod seat and a sliding rod, and the supporting frame is arranged on the base; the sliding frame supports the supporting plate and is slidably sleeved with the supporting frame. The rod seat is fixed in the supporting frame, and a supporting fulcrum is arranged in the rod seat; one end of the sliding rod supports the supporting plate, the other end of the sliding rod is inserted into the rod base in a sliding mode, the sliding rod is sleeved with at least one adjusting plate, one end of the adjusting plate is supported by a supporting fulcrum, the other end of the adjusting plate is a free end used for adjustment, and the free end is kept downward under the action of the limiting spring; by adjusting the lifting support, the supporting plate is in a horizontal state, a horizontal plane is provided for placing the ladder, and the ladder is suitable for the ladder environment.

Description

Technical Field

[0001] The utility model relates to the technical field of ladder accessories, and particularly relates to a ladder leveling device. Background Art

[0002] A ladder is a tool for climbing heights in daily life. It consists of two vertical rods as sides, and multiple cross bars suitable for climbing are arranged between the two vertical rods for climbing operations.

[0003] When using a ladder, to ensure the safety of use, the ladder needs to be kept in a stable state. However, in actual use scenarios, there are situations where the ladder needs to be used on a stepped surface. Due to the uneven height of the stepped surface, generally only pads can be added on the lower stepped surface to level the ladder. The pads are usually bricks or books, but this method is not stable, and the pads are prone to shifting, resulting in the ladder losing balance and making it difficult to ensure the safety of using the ladder on the stepped surface; or, it can only be used horizontally along the steps, which has limitations in use and cannot be used flexibly. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a ladder leveling device, aiming to improve the problem of the existing limitations in using ladders on stepped surfaces.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A ladder leveling device includes a base, a lifting bracket, and a support plate. The lifting bracket includes:

[0007] A support frame, which is arranged on the base;

[0008] A sliding frame, which supports the support plate and is sleeved on the support frame in a sliding manner;

[0009] A rod seat, which is fixed in the support frame, and a supporting fulcrum is arranged in the rod seat;

[0010] A sliding rod, one end of which supports the support plate, and the other end is slidably inserted into the rod seat. At least one adjusting plate is sleeved on the sliding rod. One end of the adjusting plate is supported by the supporting fulcrum, and the other end is a free end for adjustment. The free end is kept downward under the action of a limiting spring.

[0011] Preferably, a retaining wall is arranged around the support plate.

[0012] Preferably, it further includes an adapter frame, which is arranged at the top of the sliding frame and the sliding rod, and the adapter frame supports the support plate;

[0013] The retaining wall is provided with a first mounting hole and a second mounting hole, and the side wall of the adapter frame is provided with a butterfly bolt connected to the first mounting hole and a first connecting piece rotatably connected to the second mounting hole.

[0014] Preferably, a plurality of the first mounting holes are provided, and the plurality of the first mounting holes are arranged at equal intervals; and / or a plurality of the second mounting holes are provided, and the plurality of the second mounting holes are arranged at equal intervals.

[0015] Preferably, the base is a frame structure, and a square pin connected to the bottom of the support frame and a second connecting member rotatably connected to the support frame are provided on the side wall of the base.

[0016] Preferably, a plurality of adjustment plates are provided.

[0017] Preferably, an anti-slip pad is provided on the bottom surface of the base and / or the top surface of the support plate and / or the bottom surface of the support plate.

[0018] Preferably, the anti-slip pad is made of rubber or silicone.

[0019] Preferably, a reinforcing plate is provided at the bottom of the support frame;

[0020] The square pin and the second connecting member are arranged through the reinforcing plate;

[0021] Preferably, a limit plate is provided on one side of the bottom of the support frame, and a limit slot is provided on the limit plate;

[0022] A limiting member which is rotatably arranged on the base and is engaged with or separated from the limiting bayonet is provided.

[0023] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0024] 1. The ladder leveling device of the utility model is suitable for step environments. The base is placed on a step, and the support plate can be placed on another step higher than the base. The support plate is adjusted by the lifting bracket so that the support plate is horizontal, providing a horizontal surface for the ladder to be placed.

[0025] 2. The lifting bracket of the ladder leveling device of the utility model can adjust the lifting height by bending the adjusting plate, so as to achieve the purpose of adjusting the horizontal height of the support plate, and the adjusting plate is in an inclined state due to its own weight or limit spring, so that the sliding rod is tilted and lifted to achieve the effect of locking the sliding rod, that is, the position of the sliding rod can be automatically locked by loosening the adjusting plate, thereby fixing the lifting height of the lifting bracket, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the ladder leveling device of the utility model from a first perspective;

[0027] Figure 2 It is a structural schematic diagram of the ladder leveling device of the utility model from a second viewing angle;

[0028] Figure 3 It is a cross-sectional view of the lifting bracket of the ladder leveling device described in the utility model;

[0029] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0030] Figure 5 This is a schematic diagram of the disassembled structure of the ladder leveling device of the utility model;

[0031] Figure 6 The utility model is a partial structural schematic diagram of the ladder leveling device.

[0032] Description of reference numerals:

[0033] 10. Base;

[0034] 101. square pin; 102. second connecting member; 103. anti-slip pad; 104. limiting member;

[0035] 11. Lifting bracket;

[0036] 111, supporting frame; 1111, adjusting opening; 1112, second strip opening; 11121, reinforcing plate;

[0037] 1113, limiting plate; 11131, limiting bayonet; 112, sliding frame; 1121, first strip opening;

[0038] 113, rod seat; 1131, supporting fulcrum; 114, sliding rod; 1141, adjusting plate;

[0039] 11411, adjustment gap; 1142, sliding gap; 1143, limit spring;

[0040] 12. Support plate;

[0041] 121, retaining wall; 1211, first mounting hole; 1212, second mounting hole;

[0042] 13. Adapter frame;

[0043] 131. butterfly bolt; 132. first connecting member. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0045] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element of the present utility model must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0046] When an element is referred to as "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0048] Embodiment

[0049] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown in

[0050] Specifically, the ladder leveling device is suitable for a step environment. The base 10 is placed on a step surface, and the support plate 12 is placed on another step surface higher than the base 10. The lifting bracket 11 is then used to adjust the support plate 12 so that it is horizontal, thereby providing a horizontal surface for the ladder to be placed.

[0051] When in use, by bending the adjustment plate 1141, the adjustment plate 1141 is rotated with the end against the supporting fulcrum 1131 as the supporting point. The supporting fulcrum 1131 can be a hinged end or a convex block, and the circular hole on the adjustment plate 1141 is adjusted toward the horizontal position to form an adjustment gap 11411 with the slide bar 114 (that is, the diameter of the circular hole on the adjustment plate 1141 is larger than the diameter of the slide bar 114. When the adjustment plate 1141 is adjusted toward the horizontal position, the circular hole on the adjustment plate 1141 will form an adjustment gap 11411 with the slide bar 114), so that the slide bar 114 can move up and down freely. The diameter of the through hole on the rod seat 113 is larger than the diameter of the slide bar 114, so as to form a sliding gap 1142 for the slide bar 114 to slide. In this way, by bending the adjustment plate 1141, the purpose of adjusting the horizontal height of the support plate 12 is achieved, the problem of placing the ladder on the stairs is solved, and the flexibility of ladder use is improved.

[0052] When in normal or static state, the adjustment plate 1141 is in an inclined state due to its own weight or the limit spring 1143. The inclined adjustment plate 1141 contacts with the slide bar 114 at two points and self-locks under the action of static friction, thereby tilting and lifting the slide bar 114 to achieve the effect of locking the slide bar 114. In order to improve the locking force, multiple stacked adjustment plates 1141 can be set for use. In this embodiment, three adjustment plates 1141 are set (more than one can be set according to actual needs) to increase the support points with the slide bar 114 and improve the locking force.

[0053] Furthermore, in order to facilitate the adjustment of the adjustment plate 1141, an adjustment opening 1111 is provided on one side wall of the support frame 112, and the opening of the rod seat 113 is arranged opposite to the adjustment opening 1111. Since the sliding frame 112 is a frame structure, a first strip opening 1121 for avoiding the adjustment opening 1111 is provided on one side wall of the sliding frame 112, and the first strip opening 1121 is arranged through both ends of the sliding frame 112, so that the adjustment opening 1111 will always be aligned with the first strip opening 1121, so as to facilitate the adjustment of the adjustment plate 1141 by moving it.

[0054] like Figure 1 and Figure 5As shown, in this embodiment, a retaining wall 121 is provided around the support plate 12. The provision of the retaining wall 121 can create the effect of a surrounding wall on the top surface of the support plate 12, such that the ladder placed on the support plate 12 will not slide or disengage from the ladder leveling device, improving practicality and safety.

[0055] As Figure 1 , Figure 2 and Figure 5 shown, this embodiment further includes an adapter frame 13. The adapter frame 13 is provided at the top of the sliding frame 112 and the sliding rod 114, and the adapter frame 13 supports the support plate 12; a first mounting hole 1211 and a second mounting hole 1212 are provided on the retaining wall 121, and a wing bolt 131 connected to the first mounting hole 1211 and a first connecting member 132 rotatably connected to the second mounting hole 1212 are provided on the side wall of the adapter frame 13. The first connecting member 132 can be a bolt-nut structure or a pin structure, etc.

[0056] Specifically, the wing bolt 131 can be manually disassembled. By disassembling the wing bolt 131 from the first mounting hole 1211, the support plate 12 can then be rotated relative to the lifting bracket 11, that is, the support plate 12 rotates around the first connecting member 132 on the second mounting hole 1212, achieving the effect of rotational folding and storage, so as to facilitate storage and placement, improving practicality.

[0057] Furthermore, in this embodiment, a plurality of first mounting holes 1211 are provided, and the plurality of first mounting holes 1211 are equidistantly spaced; and / or, a plurality of second mounting holes 1212 are provided, and the plurality of second mounting holes 1212 are equidistantly spaced. In this way, the distance between the overlapping ends of the lifting bracket 11 and the support plate 12 can be adjusted (the overlapping end is the end that overlaps with the higher step surface of the staircase, and the other end of the support plate 12 is connected to the lifting bracket 11) to adapt to staircases with different step surface widths, improving practicality.

[0058] Preferably, the distance between the first mounting hole 1211 and the second mounting hole 1212 is set to be the same as the distance between two adjacent first mounting holes 1211 or the distance between two adjacent second mounting holes 1212. In this way, only one row of equally spaced mounting holes needs to be provided, reducing the complexity of the structure and improving production efficiency.

[0059] As Figure 1 and Figure 5 shown, in this embodiment, the base 10 is a frame structure, and a square pin 101 connected to the bottom of the support frame 111 and a second connecting member 102 rotatably connected to the support frame 111 are provided on the side wall of the base 10. The second connecting member 102 can be a bolt-nut structure or a pin structure, etc.

[0060] In this way, the square pin 101 can be disassembled manually, so that the base 10 rotates and folds toward the support frame 111 with the second connecting member 102 as the rotation axis for storage. Combining with the rotational storage effect of the first connecting member 132, the folding and storage effect is achieved, greatly reducing the storage space and making it convenient to use.

[0061] As Figure 1 , Figure 2 and Figure 5 shown, in this embodiment, anti-slip pads 103 are provided on the bottom surface of the base 10 and / or the top surface of the support plate 12 and / or the bottom surface of the support plate 12. The anti-slip pads 103 can be rubber pads or silicone pads. The anti-slip pads 103 provided on the bottom surface of the base 10 and the anti-slip pads 103 provided on the bottom surface of the support plate 12 can increase the friction between the ladder leveling device and the step surface, thereby improving the safety and practicality of using the ladder leveling device; while the anti-slip pads 103 provided on the top surface of the support plate 12 can increase the friction between the ladder and the support plate 12, enabling the ladder to be placed more stably on the support plate 12.

[0062] As Figure 5 shown, in this embodiment, a reinforcing plate 11121 is provided at the bottom of the support frame 111; the square pin 101 and the second connecting member 102 penetrate through the reinforcing plate 11121. Since the support frame 111 is a frame structure, a second strip-shaped opening 1112 penetrating through both ends of the support frame 111 is provided on one side wall of the support frame 111, and the reinforcing plate 11121 is provided at the bottom of the second strip-shaped opening 1112. The reinforcing plate 11121 can be a rectangular plate. By providing the reinforcing plate 11121, the structural strength of the support frame 111 can be improved, and at the same time, the locking force of the square pin 101 and the first connecting member 132 can be increased, which has good practicality.

[0063] As Figure 1 and Figure 5 shown, in this embodiment, a limiting plate 1113 is provided on one side at the bottom of the support frame 111, and a limiting bayonet 11131 is provided on the limiting plate 1113; a limiting member 104 that is rotatably provided on the base 10 and is engaged or disengaged with the limiting bayonet 11131 is provided.

[0064] Specifically, rotate the limiting member 104 so that it is engaged with the limiting bayonet 11131 of the limiting plate 1113, thereby abutting against one side of the support frame 111, eliminating the problem of possible shaking caused by small gaps at each connection position, and increasing the stability of using the ladder leveling device.

[0065] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A ladder leveling device, comprising a base, a lifting bracket and a support plate, characterized in that, The lifting bracket includes: A support frame, which is arranged on the base; A sliding frame, which supports the support plate and is sleeved with the support frame in a sliding manner; A rod base, which is fixed in the support frame and has a supporting fulcrum therein; A sliding rod, one end of which supports the support plate and the other end of which is slidably inserted into the rod base. At least one adjusting plate is sleeved on the sliding rod. One end of the adjusting plate is supported by the supporting fulcrum and the other end is a free end for adjustment. The free end is kept downward under the action of a limiting spring.

2. The ladder leveling device according to claim 1, wherein A retaining wall is arranged around the support plate.

3. The ladder leveling device according to claim 2, characterized in that, It further includes an adapter frame, which is arranged at the top of the sliding frame and the sliding rod, and the adapter frame supports the support plate; A first mounting hole and a second mounting hole are arranged on the retaining wall. A wing bolt connected to the first mounting hole and a first connecting piece rotatably connected to the second mounting hole are arranged on the side wall of the adapter frame.

4. The ladder leveling device according to claim 3, characterized in that, A plurality of the first mounting holes are provided, and the plurality of first mounting holes are arranged at equal intervals; and / or a plurality of the second mounting holes are provided, and the plurality of second mounting holes are arranged at equal intervals.

5. The ladder leveling device according to claim 3, characterized in that, The base is of a frame structure. A square pin connected to the bottom of the support frame and a second connecting piece rotatably connected to the support frame are arranged on the side wall of the base.

6. The ladder leveling device according to claim 1, characterized in that, A plurality of the adjusting plates are provided.

7. The ladder leveling device according to claim 1, wherein, An anti-slip pad is arranged on the bottom surface of the base and / or the top surface of the support plate and / or the bottom surface of the support plate.

8. The ladder leveling device according to claim 7, characterized in that, The anti-slip pad is made of rubber or silica gel.

9. The ladder leveling device according to claim 5, characterized in that, A reinforcing plate is arranged at the bottom of the support frame; The square pin and the second connecting piece penetrate through the reinforcing plate.

10. The ladder leveling device according to claim 5, wherein, A limiting plate is arranged on one side of the bottom of the support frame, and a limiting bayonet is arranged on the limiting plate; A limiting member that is rotatably arranged on the base and is engaged with or disengaged from the limiting bayonet is provided.

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